[1] | 1 | /* |
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[564] | 2 | * process.c - process related functions definition. |
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[172] | 3 | * |
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[1] | 4 | * Authors Ghassan Almaless (2008,2009,2010,2011,2012) |
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| 5 | * Mohamed Lamine Karaoui (2015) |
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[618] | 6 | * Alain Greiner (2016,2017,2018,2019) |
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[1] | 7 | * |
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| 8 | * Copyright (c) UPMC Sorbonne Universites |
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| 9 | * |
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[409] | 10 | * This file is part of ALMOS-MKH. |
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[1] | 11 | * |
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[172] | 12 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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[1] | 13 | * under the terms of the GNU General Public License as published by |
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| 14 | * the Free Software Foundation; version 2.0 of the License. |
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| 15 | * |
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[172] | 16 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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[1] | 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 19 | * General Public License for more details. |
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| 20 | * |
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| 21 | * You should have received a copy of the GNU General Public License |
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[172] | 22 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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[1] | 23 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 24 | */ |
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| 25 | |
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[14] | 26 | #include <kernel_config.h> |
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[457] | 27 | #include <hal_kernel_types.h> |
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[1] | 28 | #include <hal_remote.h> |
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| 29 | #include <hal_uspace.h> |
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[409] | 30 | #include <hal_irqmask.h> |
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[623] | 31 | #include <hal_vmm.h> |
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[1] | 32 | #include <errno.h> |
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| 33 | #include <printk.h> |
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| 34 | #include <memcpy.h> |
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| 35 | #include <bits.h> |
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| 36 | #include <kmem.h> |
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| 37 | #include <page.h> |
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| 38 | #include <vmm.h> |
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| 39 | #include <vfs.h> |
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| 40 | #include <core.h> |
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| 41 | #include <thread.h> |
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[428] | 42 | #include <chdev.h> |
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[1] | 43 | #include <list.h> |
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[407] | 44 | #include <string.h> |
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[1] | 45 | #include <scheduler.h> |
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[564] | 46 | #include <busylock.h> |
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| 47 | #include <queuelock.h> |
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| 48 | #include <remote_queuelock.h> |
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| 49 | #include <rwlock.h> |
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| 50 | #include <remote_rwlock.h> |
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[1] | 51 | #include <dqdt.h> |
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| 52 | #include <cluster.h> |
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| 53 | #include <ppm.h> |
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| 54 | #include <boot_info.h> |
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| 55 | #include <process.h> |
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| 56 | #include <elf.h> |
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[23] | 57 | #include <syscalls.h> |
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[435] | 58 | #include <shared_syscalls.h> |
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[1] | 59 | |
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| 60 | ////////////////////////////////////////////////////////////////////////////////////////// |
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| 61 | // Extern global variables |
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| 62 | ////////////////////////////////////////////////////////////////////////////////////////// |
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| 63 | |
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[428] | 64 | extern process_t process_zero; // allocated in kernel_init.c |
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| 65 | extern chdev_directory_t chdev_dir; // allocated in kernel_init.c |
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[1] | 66 | |
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| 67 | ////////////////////////////////////////////////////////////////////////////////////////// |
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| 68 | // Process initialisation related functions |
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| 69 | ////////////////////////////////////////////////////////////////////////////////////////// |
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| 70 | |
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[583] | 71 | ///////////////////////////////// |
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[503] | 72 | process_t * process_alloc( void ) |
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[1] | 73 | { |
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| 74 | kmem_req_t req; |
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| 75 | |
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| 76 | req.type = KMEM_PROCESS; |
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| 77 | req.size = sizeof(process_t); |
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| 78 | req.flags = AF_KERNEL; |
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| 79 | |
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| 80 | return (process_t *)kmem_alloc( &req ); |
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| 81 | } |
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| 82 | |
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| 83 | //////////////////////////////////////// |
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| 84 | void process_free( process_t * process ) |
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| 85 | { |
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| 86 | kmem_req_t req; |
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| 87 | |
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| 88 | req.type = KMEM_PROCESS; |
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| 89 | req.ptr = process; |
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| 90 | kmem_free( &req ); |
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| 91 | } |
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| 92 | |
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[101] | 93 | ///////////////////////////////////////////////// |
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| 94 | void process_reference_init( process_t * process, |
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| 95 | pid_t pid, |
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[457] | 96 | xptr_t parent_xp ) |
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[1] | 97 | { |
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[610] | 98 | xptr_t process_xp; |
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[428] | 99 | cxy_t parent_cxy; |
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| 100 | process_t * parent_ptr; |
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[407] | 101 | xptr_t stdin_xp; |
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| 102 | xptr_t stdout_xp; |
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| 103 | xptr_t stderr_xp; |
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| 104 | uint32_t stdin_id; |
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| 105 | uint32_t stdout_id; |
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| 106 | uint32_t stderr_id; |
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[415] | 107 | error_t error; |
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[428] | 108 | uint32_t txt_id; |
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| 109 | char rx_path[40]; |
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| 110 | char tx_path[40]; |
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[440] | 111 | xptr_t file_xp; |
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[428] | 112 | xptr_t chdev_xp; |
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| 113 | chdev_t * chdev_ptr; |
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| 114 | cxy_t chdev_cxy; |
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| 115 | pid_t parent_pid; |
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[1] | 116 | |
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[610] | 117 | // build extended pointer on this reference process |
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| 118 | process_xp = XPTR( local_cxy , process ); |
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| 119 | |
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[428] | 120 | // get parent process cluster and local pointer |
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| 121 | parent_cxy = GET_CXY( parent_xp ); |
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[435] | 122 | parent_ptr = GET_PTR( parent_xp ); |
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[204] | 123 | |
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[457] | 124 | // get parent_pid |
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[564] | 125 | parent_pid = hal_remote_l32( XPTR( parent_cxy , &parent_ptr->pid ) ); |
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[428] | 126 | |
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[438] | 127 | #if DEBUG_PROCESS_REFERENCE_INIT |
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[610] | 128 | thread_t * this = CURRENT_THREAD; |
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[433] | 129 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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[610] | 130 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 131 | printk("\n[%s] thread[%x,%x] enter to initalialize process %x / cycle %d\n", |
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| 132 | __FUNCTION__, parent_pid, this->trdid, pid, cycle ); |
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[433] | 133 | #endif |
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[428] | 134 | |
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[610] | 135 | // initialize pid, ref_xp, parent_xp, owner_xp, term_state fields |
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[433] | 136 | process->pid = pid; |
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| 137 | process->ref_xp = XPTR( local_cxy , process ); |
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[443] | 138 | process->owner_xp = XPTR( local_cxy , process ); |
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[433] | 139 | process->parent_xp = parent_xp; |
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| 140 | process->term_state = 0; |
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[428] | 141 | |
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[610] | 142 | // initialize VFS root inode and CWD inode |
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| 143 | process->vfs_root_xp = hal_remote_l64( XPTR( parent_cxy, &parent_ptr->vfs_root_xp ) ); |
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| 144 | process->cwd_xp = hal_remote_l64( XPTR( parent_cxy, &parent_ptr->cwd_xp ) ); |
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| 145 | |
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[409] | 146 | // initialize vmm as empty |
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[415] | 147 | error = vmm_init( process ); |
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[564] | 148 | |
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| 149 | assert( (error == 0) , "cannot initialize VMM\n" ); |
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[415] | 150 | |
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[438] | 151 | #if (DEBUG_PROCESS_REFERENCE_INIT & 1) |
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[433] | 152 | cycle = (uint32_t)hal_get_cycles(); |
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[610] | 153 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 154 | printk("\n[%s] thread[%x,%x] / vmm empty for process %x / cycle %d\n", |
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| 155 | __FUNCTION__, parent_pid, this->trdid, pid, cycle ); |
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[433] | 156 | #endif |
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[1] | 157 | |
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[409] | 158 | // initialize fd_array as empty |
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[408] | 159 | process_fd_init( process ); |
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[1] | 160 | |
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[428] | 161 | // define the stdin/stdout/stderr pseudo files <=> select a TXT terminal. |
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[581] | 162 | if( (pid == 1) || (parent_pid == 1) ) // INIT or KSH process |
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[408] | 163 | { |
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[581] | 164 | // select a TXT channel |
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| 165 | if( pid == 1 ) txt_id = 0; // INIT |
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| 166 | else txt_id = process_txt_alloc(); // KSH |
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[428] | 167 | |
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[457] | 168 | // attach process to TXT |
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[428] | 169 | process_txt_attach( process , txt_id ); |
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| 170 | |
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[457] | 171 | #if (DEBUG_PROCESS_REFERENCE_INIT & 1) |
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| 172 | cycle = (uint32_t)hal_get_cycles(); |
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[610] | 173 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 174 | printk("\n[%s] thread[%x,%x] / process %x attached to TXT%d / cycle %d\n", |
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| 175 | __FUNCTION__, parent_pid, this->trdid, pid, txt_id, cycle ); |
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[457] | 176 | #endif |
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[428] | 177 | // build path to TXT_RX[i] and TXT_TX[i] chdevs |
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| 178 | snprintf( rx_path , 40 , "/dev/external/txt%d_rx", txt_id ); |
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| 179 | snprintf( tx_path , 40 , "/dev/external/txt%d_tx", txt_id ); |
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| 180 | |
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| 181 | // create stdin pseudo file |
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[610] | 182 | error = vfs_open( process->vfs_root_xp, |
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[428] | 183 | rx_path, |
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[610] | 184 | process_xp, |
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[408] | 185 | O_RDONLY, |
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| 186 | 0, // FIXME chmod |
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| 187 | &stdin_xp, |
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| 188 | &stdin_id ); |
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[1] | 189 | |
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[564] | 190 | assert( (error == 0) , "cannot open stdin pseudo file" ); |
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| 191 | assert( (stdin_id == 0) , "stdin index must be 0" ); |
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[428] | 192 | |
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[440] | 193 | #if (DEBUG_PROCESS_REFERENCE_INIT & 1) |
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| 194 | cycle = (uint32_t)hal_get_cycles(); |
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[610] | 195 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 196 | printk("\n[%s] thread[%x,%x] / stdin open for process %x / cycle %d\n", |
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| 197 | __FUNCTION__, parent_pid, this->trdid, pid, cycle ); |
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[440] | 198 | #endif |
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| 199 | |
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[428] | 200 | // create stdout pseudo file |
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[610] | 201 | error = vfs_open( process->vfs_root_xp, |
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[428] | 202 | tx_path, |
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[610] | 203 | process_xp, |
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[408] | 204 | O_WRONLY, |
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| 205 | 0, // FIXME chmod |
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| 206 | &stdout_xp, |
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| 207 | &stdout_id ); |
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[1] | 208 | |
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[492] | 209 | assert( (error == 0) , "cannot open stdout pseudo file" ); |
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| 210 | assert( (stdout_id == 1) , "stdout index must be 1" ); |
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[428] | 211 | |
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[440] | 212 | #if (DEBUG_PROCESS_REFERENCE_INIT & 1) |
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| 213 | cycle = (uint32_t)hal_get_cycles(); |
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[610] | 214 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 215 | printk("\n[%s] thread[%x,%x] / stdout open for process %x / cycle %d\n", |
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| 216 | __FUNCTION__, parent_pid, this->trdid, pid, cycle ); |
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[440] | 217 | #endif |
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| 218 | |
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[428] | 219 | // create stderr pseudo file |
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[610] | 220 | error = vfs_open( process->vfs_root_xp, |
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[428] | 221 | tx_path, |
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[610] | 222 | process_xp, |
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[408] | 223 | O_WRONLY, |
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| 224 | 0, // FIXME chmod |
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| 225 | &stderr_xp, |
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| 226 | &stderr_id ); |
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[428] | 227 | |
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[492] | 228 | assert( (error == 0) , "cannot open stderr pseudo file" ); |
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| 229 | assert( (stderr_id == 2) , "stderr index must be 2" ); |
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[428] | 230 | |
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[440] | 231 | #if (DEBUG_PROCESS_REFERENCE_INIT & 1) |
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| 232 | cycle = (uint32_t)hal_get_cycles(); |
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[610] | 233 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 234 | printk("\n[%s] thread[%x,%x] / stderr open for process %x / cycle %d\n", |
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| 235 | __FUNCTION__, parent_pid, this->trdid, pid, cycle ); |
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[440] | 236 | #endif |
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| 237 | |
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[408] | 238 | } |
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[428] | 239 | else // normal user process |
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[408] | 240 | { |
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[457] | 241 | // get extended pointer on stdin pseudo file in parent process |
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[564] | 242 | file_xp = (xptr_t)hal_remote_l64( XPTR( parent_cxy , &parent_ptr->fd_array.array[0] ) ); |
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[440] | 243 | |
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[457] | 244 | // get extended pointer on parent process TXT chdev |
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[440] | 245 | chdev_xp = chdev_from_file( file_xp ); |
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[428] | 246 | |
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| 247 | // get cluster and local pointer on chdev |
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| 248 | chdev_cxy = GET_CXY( chdev_xp ); |
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[435] | 249 | chdev_ptr = GET_PTR( chdev_xp ); |
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[428] | 250 | |
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[564] | 251 | // get parent process TXT terminal index |
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| 252 | txt_id = hal_remote_l32( XPTR( chdev_cxy , &chdev_ptr->channel ) ); |
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[407] | 253 | |
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[564] | 254 | // attach child process to parent process TXT terminal |
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[428] | 255 | process_txt_attach( process , txt_id ); |
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[407] | 256 | |
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[457] | 257 | // copy all open files from parent process fd_array to this process |
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[428] | 258 | process_fd_remote_copy( XPTR( local_cxy , &process->fd_array ), |
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[457] | 259 | XPTR( parent_cxy , &parent_ptr->fd_array ) ); |
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[408] | 260 | } |
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[407] | 261 | |
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[610] | 262 | // initialize lock protecting CWD changes |
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| 263 | remote_busylock_init( XPTR( local_cxy , &process->cwd_lock ), LOCK_PROCESS_CWD ); |
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[408] | 264 | |
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[438] | 265 | #if (DEBUG_PROCESS_REFERENCE_INIT & 1) |
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[433] | 266 | cycle = (uint32_t)hal_get_cycles(); |
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[610] | 267 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 268 | printk("\n[%s] thread[%x,%x] / set fd_array for process %x / cycle %d\n", |
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| 269 | __FUNCTION__, parent_pid, this->trdid, pid , cycle ); |
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[433] | 270 | #endif |
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[407] | 271 | |
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[408] | 272 | // reset children list root |
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| 273 | xlist_root_init( XPTR( local_cxy , &process->children_root ) ); |
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| 274 | process->children_nr = 0; |
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[564] | 275 | remote_queuelock_init( XPTR( local_cxy , &process->children_lock ), LOCK_PROCESS_CHILDREN ); |
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[407] | 276 | |
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[611] | 277 | // reset semaphore / mutex / barrier / condvar list roots and lock |
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[408] | 278 | xlist_root_init( XPTR( local_cxy , &process->sem_root ) ); |
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| 279 | xlist_root_init( XPTR( local_cxy , &process->mutex_root ) ); |
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| 280 | xlist_root_init( XPTR( local_cxy , &process->barrier_root ) ); |
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| 281 | xlist_root_init( XPTR( local_cxy , &process->condvar_root ) ); |
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[564] | 282 | remote_queuelock_init( XPTR( local_cxy , &process->sync_lock ), LOCK_PROCESS_USERSYNC ); |
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[407] | 283 | |
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[611] | 284 | // reset open directories root and lock |
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| 285 | xlist_root_init( XPTR( local_cxy , &process->dir_root ) ); |
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| 286 | remote_queuelock_init( XPTR( local_cxy , &process->dir_lock ), LOCK_PROCESS_DIR ); |
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| 287 | |
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[408] | 288 | // register new process in the local cluster manager pref_tbl[] |
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| 289 | lpid_t lpid = LPID_FROM_PID( pid ); |
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| 290 | LOCAL_CLUSTER->pmgr.pref_tbl[lpid] = XPTR( local_cxy , process ); |
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[407] | 291 | |
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[408] | 292 | // register new process descriptor in local cluster manager local_list |
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| 293 | cluster_process_local_link( process ); |
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[407] | 294 | |
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[408] | 295 | // register new process descriptor in local cluster manager copies_list |
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| 296 | cluster_process_copies_link( process ); |
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[172] | 297 | |
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[564] | 298 | // initialize th_tbl[] array and associated threads |
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[1] | 299 | uint32_t i; |
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[564] | 300 | |
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| 301 | for( i = 0 ; i < CONFIG_THREADS_MAX_PER_CLUSTER ; i++ ) |
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[1] | 302 | { |
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| 303 | process->th_tbl[i] = NULL; |
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| 304 | } |
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| 305 | process->th_nr = 0; |
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[564] | 306 | rwlock_init( &process->th_lock , LOCK_PROCESS_THTBL ); |
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[1] | 307 | |
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[124] | 308 | hal_fence(); |
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[1] | 309 | |
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[438] | 310 | #if (DEBUG_PROCESS_REFERENCE_INIT & 1) |
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[433] | 311 | cycle = (uint32_t)hal_get_cycles(); |
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[610] | 312 | if( DEBUG_PROCESS_REFERENCE_INIT < cycle ) |
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| 313 | printk("\n[%s] thread[%x,%x] exit for process %x / cycle %d\n", |
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| 314 | __FUNCTION__, parent_pid, this->trdid, pid, cycle ); |
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[433] | 315 | #endif |
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[101] | 316 | |
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[428] | 317 | } // process_reference_init() |
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[204] | 318 | |
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[1] | 319 | ///////////////////////////////////////////////////// |
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| 320 | error_t process_copy_init( process_t * local_process, |
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| 321 | xptr_t reference_process_xp ) |
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| 322 | { |
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[415] | 323 | error_t error; |
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| 324 | |
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[23] | 325 | // get reference process cluster and local pointer |
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| 326 | cxy_t ref_cxy = GET_CXY( reference_process_xp ); |
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[435] | 327 | process_t * ref_ptr = GET_PTR( reference_process_xp ); |
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[1] | 328 | |
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[428] | 329 | // initialize PID, REF_XP, PARENT_XP, and STATE |
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[564] | 330 | local_process->pid = hal_remote_l32( XPTR( ref_cxy , &ref_ptr->pid ) ); |
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| 331 | local_process->parent_xp = hal_remote_l64( XPTR( ref_cxy , &ref_ptr->parent_xp ) ); |
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[433] | 332 | local_process->ref_xp = reference_process_xp; |
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[443] | 333 | local_process->owner_xp = reference_process_xp; |
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[433] | 334 | local_process->term_state = 0; |
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[407] | 335 | |
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[564] | 336 | #if DEBUG_PROCESS_COPY_INIT |
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[610] | 337 | thread_t * this = CURRENT_THREAD; |
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[433] | 338 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
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[610] | 339 | if( DEBUG_PROCESS_COPY_INIT < cycle ) |
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| 340 | printk("\n[%s] thread[%x,%x] enter for process %x / cycle %d\n", |
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| 341 | __FUNCTION__, this->process->pid, this->trdid, local_process->pid, cycle ); |
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[433] | 342 | #endif |
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[407] | 343 | |
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[564] | 344 | // check user process |
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| 345 | assert( (local_process->pid != 0), "PID cannot be 0" ); |
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| 346 | |
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[172] | 347 | // reset local process vmm |
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[415] | 348 | error = vmm_init( local_process ); |
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[492] | 349 | assert( (error == 0) , "cannot initialize VMM\n"); |
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[1] | 350 | |
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[172] | 351 | // reset process file descriptors array |
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[23] | 352 | process_fd_init( local_process ); |
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[1] | 353 | |
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[610] | 354 | // reset vfs_root_xp / vfs_bin_xp / cwd_xp fields |
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[564] | 355 | local_process->vfs_root_xp = hal_remote_l64( XPTR( ref_cxy , &ref_ptr->vfs_root_xp ) ); |
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| 356 | local_process->vfs_bin_xp = hal_remote_l64( XPTR( ref_cxy , &ref_ptr->vfs_bin_xp ) ); |
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[610] | 357 | local_process->cwd_xp = XPTR_NULL; |
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[1] | 358 | |
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| 359 | // reset children list root (not used in a process descriptor copy) |
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| 360 | xlist_root_init( XPTR( local_cxy , &local_process->children_root ) ); |
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[172] | 361 | local_process->children_nr = 0; |
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[564] | 362 | remote_queuelock_init( XPTR( local_cxy , &local_process->children_lock ), |
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| 363 | LOCK_PROCESS_CHILDREN ); |
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[1] | 364 | |
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[428] | 365 | // reset children_list (not used in a process descriptor copy) |
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| 366 | xlist_entry_init( XPTR( local_cxy , &local_process->children_list ) ); |
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[1] | 367 | |
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| 368 | // reset semaphores list root (not used in a process descriptor copy) |
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| 369 | xlist_root_init( XPTR( local_cxy , &local_process->sem_root ) ); |
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[23] | 370 | xlist_root_init( XPTR( local_cxy , &local_process->mutex_root ) ); |
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| 371 | xlist_root_init( XPTR( local_cxy , &local_process->barrier_root ) ); |
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| 372 | xlist_root_init( XPTR( local_cxy , &local_process->condvar_root ) ); |
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[1] | 373 | |
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[564] | 374 | // initialize th_tbl[] array and associated fields |
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[1] | 375 | uint32_t i; |
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[564] | 376 | for( i = 0 ; i < CONFIG_THREADS_MAX_PER_CLUSTER ; i++ ) |
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[1] | 377 | { |
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| 378 | local_process->th_tbl[i] = NULL; |
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| 379 | } |
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| 380 | local_process->th_nr = 0; |
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[564] | 381 | rwlock_init( &local_process->th_lock , LOCK_PROCESS_THTBL ); |
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[1] | 382 | |
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[564] | 383 | |
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[1] | 384 | // register new process descriptor in local cluster manager local_list |
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| 385 | cluster_process_local_link( local_process ); |
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| 386 | |
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| 387 | // register new process descriptor in owner cluster manager copies_list |
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| 388 | cluster_process_copies_link( local_process ); |
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| 389 | |
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[124] | 390 | hal_fence(); |
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[1] | 391 | |
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[438] | 392 | #if DEBUG_PROCESS_COPY_INIT |
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[433] | 393 | cycle = (uint32_t)hal_get_cycles(); |
---|
[610] | 394 | if( DEBUG_PROCESS_COPY_INIT < cycle ) |
---|
| 395 | printk("\n[%s] thread[%x,%x] exit for process %x / cycle %d\n", |
---|
| 396 | __FUNCTION__, this->process->pid, this->trdid, local_process->pid, cycle ); |
---|
[433] | 397 | #endif |
---|
[279] | 398 | |
---|
[1] | 399 | return 0; |
---|
| 400 | |
---|
[204] | 401 | } // end process_copy_init() |
---|
| 402 | |
---|
[1] | 403 | /////////////////////////////////////////// |
---|
| 404 | void process_destroy( process_t * process ) |
---|
| 405 | { |
---|
[428] | 406 | xptr_t parent_xp; |
---|
| 407 | process_t * parent_ptr; |
---|
| 408 | cxy_t parent_cxy; |
---|
| 409 | xptr_t children_lock_xp; |
---|
[446] | 410 | xptr_t children_nr_xp; |
---|
[1] | 411 | |
---|
[437] | 412 | pid_t pid = process->pid; |
---|
| 413 | |
---|
[593] | 414 | // check no more threads |
---|
[618] | 415 | assert( (process->th_nr == 0), |
---|
| 416 | "process %x in cluster %x contains threads", pid , local_cxy ); |
---|
[428] | 417 | |
---|
[438] | 418 | #if DEBUG_PROCESS_DESTROY |
---|
[610] | 419 | thread_t * this = CURRENT_THREAD; |
---|
[433] | 420 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[610] | 421 | if( DEBUG_PROCESS_DESTROY < cycle ) |
---|
| 422 | printk("\n[%s] thread[%x,%x] enter for process %x in cluster %x / cycle %d\n", |
---|
| 423 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy, cycle ); |
---|
[433] | 424 | #endif |
---|
[428] | 425 | |
---|
[618] | 426 | // Destroy VMM |
---|
| 427 | vmm_destroy( process ); |
---|
| 428 | |
---|
| 429 | #if (DEBUG_PROCESS_DESTROY & 1) |
---|
| 430 | if( DEBUG_PROCESS_DESTROY < cycle ) |
---|
| 431 | printk("\n[%s] thread[%x,%x] destroyed VMM for process %x in cluster %x\n", |
---|
| 432 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy ); |
---|
| 433 | #endif |
---|
| 434 | |
---|
[436] | 435 | // remove process from local_list in local cluster manager |
---|
| 436 | cluster_process_local_unlink( process ); |
---|
[1] | 437 | |
---|
[618] | 438 | #if (DEBUG_PROCESS_DESTROY & 1) |
---|
| 439 | if( DEBUG_PROCESS_DESTROY < cycle ) |
---|
| 440 | printk("\n[%s] thread[%x,%x] removed process %x in cluster %x from local list\n", |
---|
| 441 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy ); |
---|
| 442 | #endif |
---|
| 443 | |
---|
[436] | 444 | // remove process from copies_list in owner cluster manager |
---|
| 445 | cluster_process_copies_unlink( process ); |
---|
[23] | 446 | |
---|
[618] | 447 | #if (DEBUG_PROCESS_DESTROY & 1) |
---|
| 448 | if( DEBUG_PROCESS_DESTROY < cycle ) |
---|
| 449 | printk("\n[%s] thread[%x,%x] removed process %x in cluster %x from copies list\n", |
---|
| 450 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy ); |
---|
| 451 | #endif |
---|
| 452 | |
---|
[450] | 453 | // remove process from children_list |
---|
| 454 | // and release PID if owner cluster |
---|
[437] | 455 | if( CXY_FROM_PID( pid ) == local_cxy ) |
---|
[428] | 456 | { |
---|
| 457 | // get pointers on parent process |
---|
| 458 | parent_xp = process->parent_xp; |
---|
| 459 | parent_cxy = GET_CXY( parent_xp ); |
---|
| 460 | parent_ptr = GET_PTR( parent_xp ); |
---|
| 461 | |
---|
| 462 | // get extended pointer on children_lock in parent process |
---|
| 463 | children_lock_xp = XPTR( parent_cxy , &parent_ptr->children_lock ); |
---|
[446] | 464 | children_nr_xp = XPTR( parent_cxy , &parent_ptr->children_nr ); |
---|
[428] | 465 | |
---|
| 466 | // remove process from children_list |
---|
[564] | 467 | remote_queuelock_acquire( children_lock_xp ); |
---|
[428] | 468 | xlist_unlink( XPTR( local_cxy , &process->children_list ) ); |
---|
[446] | 469 | hal_remote_atomic_add( children_nr_xp , -1 ); |
---|
[564] | 470 | remote_queuelock_release( children_lock_xp ); |
---|
[450] | 471 | |
---|
[618] | 472 | #if (DEBUG_PROCESS_DESTROY & 1) |
---|
| 473 | if( DEBUG_PROCESS_DESTROY < cycle ) |
---|
| 474 | printk("\n[%s] thread[%x,%x] removed process %x in cluster %x from children list\n", |
---|
| 475 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy ); |
---|
| 476 | #endif |
---|
| 477 | |
---|
[564] | 478 | // release the process PID to cluster manager |
---|
| 479 | cluster_pid_release( pid ); |
---|
[428] | 480 | |
---|
[618] | 481 | #if (DEBUG_PROCESS_DESTROY & 1) |
---|
| 482 | if( DEBUG_PROCESS_DESTROY < cycle ) |
---|
| 483 | printk("\n[%s] thread[%x,%x] released process PID %x to pmgr in cluster %x\n", |
---|
| 484 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy ); |
---|
| 485 | #endif |
---|
[23] | 486 | |
---|
[618] | 487 | } |
---|
[1] | 488 | |
---|
[623] | 489 | // FIXME decrement the refcount on file pointer for vfs_bin_xp [AG] |
---|
| 490 | |
---|
[618] | 491 | // FIXME close all open files [AG] |
---|
[623] | 492 | |
---|
[618] | 493 | // FIXME synchronize dirty files [AG] |
---|
[1] | 494 | |
---|
[416] | 495 | // release memory allocated to process descriptor |
---|
| 496 | process_free( process ); |
---|
[1] | 497 | |
---|
[438] | 498 | #if DEBUG_PROCESS_DESTROY |
---|
[433] | 499 | cycle = (uint32_t)hal_get_cycles(); |
---|
[610] | 500 | if( DEBUG_PROCESS_DESTROY < cycle ) |
---|
| 501 | printk("\n[%s] thread[%x,%x] exit / process %x in cluster %x / cycle %d\n", |
---|
| 502 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy, cycle ); |
---|
[433] | 503 | #endif |
---|
[428] | 504 | |
---|
[407] | 505 | } // end process_destroy() |
---|
| 506 | |
---|
[583] | 507 | /////////////////////////////////////////////////////////////////// |
---|
[527] | 508 | const char * process_action_str( process_sigactions_t action_type ) |
---|
[409] | 509 | { |
---|
[583] | 510 | switch ( action_type ) |
---|
| 511 | { |
---|
| 512 | case BLOCK_ALL_THREADS: return "BLOCK"; |
---|
| 513 | case UNBLOCK_ALL_THREADS: return "UNBLOCK"; |
---|
| 514 | case DELETE_ALL_THREADS: return "DELETE"; |
---|
| 515 | default: return "undefined"; |
---|
| 516 | } |
---|
[409] | 517 | } |
---|
| 518 | |
---|
[435] | 519 | //////////////////////////////////////// |
---|
| 520 | void process_sigaction( pid_t pid, |
---|
[457] | 521 | uint32_t type ) |
---|
[409] | 522 | { |
---|
| 523 | cxy_t owner_cxy; // owner cluster identifier |
---|
| 524 | lpid_t lpid; // process index in owner cluster |
---|
| 525 | cluster_t * cluster; // pointer on cluster manager |
---|
| 526 | xptr_t root_xp; // extended pointer on root of copies |
---|
| 527 | xptr_t lock_xp; // extended pointer on lock protecting copies |
---|
| 528 | xptr_t iter_xp; // iterator on copies list |
---|
| 529 | xptr_t process_xp; // extended pointer on process copy |
---|
| 530 | cxy_t process_cxy; // process copy cluster identifier |
---|
[457] | 531 | process_t * process_ptr; // local pointer on process copy |
---|
[436] | 532 | reg_t save_sr; // for critical section |
---|
[457] | 533 | thread_t * client; // pointer on client thread |
---|
| 534 | xptr_t client_xp; // extended pointer on client thread |
---|
| 535 | process_t * local; // pointer on process copy in local cluster |
---|
| 536 | uint32_t remote_nr; // number of remote process copies |
---|
[619] | 537 | rpc_desc_t rpc; // shared RPC descriptor |
---|
| 538 | uint32_t responses; // shared RPC responses counter |
---|
[409] | 539 | |
---|
[457] | 540 | client = CURRENT_THREAD; |
---|
| 541 | client_xp = XPTR( local_cxy , client ); |
---|
| 542 | local = NULL; |
---|
| 543 | remote_nr = 0; |
---|
[435] | 544 | |
---|
[583] | 545 | // check calling thread can yield |
---|
| 546 | thread_assert_can_yield( client , __FUNCTION__ ); |
---|
[564] | 547 | |
---|
[438] | 548 | #if DEBUG_PROCESS_SIGACTION |
---|
[433] | 549 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 550 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 551 | printk("\n[%s] thread[%x,%x] enter to %s process %x / cycle %d\n", |
---|
[583] | 552 | __FUNCTION__ , client->process->pid, client->trdid, |
---|
[457] | 553 | process_action_str( type ) , pid , cycle ); |
---|
[433] | 554 | #endif |
---|
[409] | 555 | |
---|
[436] | 556 | // get pointer on local cluster manager |
---|
[416] | 557 | cluster = LOCAL_CLUSTER; |
---|
| 558 | |
---|
[409] | 559 | // get owner cluster identifier and process lpid |
---|
[435] | 560 | owner_cxy = CXY_FROM_PID( pid ); |
---|
| 561 | lpid = LPID_FROM_PID( pid ); |
---|
[409] | 562 | |
---|
[593] | 563 | // get root of list of copies and lock from owner cluster |
---|
[436] | 564 | root_xp = XPTR( owner_cxy , &cluster->pmgr.copies_root[lpid] ); |
---|
| 565 | lock_xp = XPTR( owner_cxy , &cluster->pmgr.copies_lock[lpid] ); |
---|
[435] | 566 | |
---|
[583] | 567 | // check action type |
---|
| 568 | assert( ((type == DELETE_ALL_THREADS ) || |
---|
| 569 | (type == BLOCK_ALL_THREADS ) || |
---|
| 570 | (type == UNBLOCK_ALL_THREADS )), "illegal action type" ); |
---|
[416] | 571 | |
---|
[593] | 572 | // This client thread send parallel RPCs to all remote clusters containing |
---|
[564] | 573 | // target process copies, wait all responses, and then handles directly |
---|
| 574 | // the threads in local cluster, when required. |
---|
[457] | 575 | // The client thread allocates a - shared - RPC descriptor in the stack, |
---|
| 576 | // because all parallel, non-blocking, server threads use the same input |
---|
| 577 | // arguments, and use the shared RPC response field |
---|
[436] | 578 | |
---|
| 579 | // mask IRQs |
---|
| 580 | hal_disable_irq( &save_sr); |
---|
| 581 | |
---|
[457] | 582 | // client thread blocks itself |
---|
| 583 | thread_block( client_xp , THREAD_BLOCKED_RPC ); |
---|
[436] | 584 | |
---|
[619] | 585 | // initialize RPC responses counter |
---|
| 586 | responses = 0; |
---|
| 587 | |
---|
[436] | 588 | // initialize shared RPC descriptor |
---|
[619] | 589 | // can be shared, because no out arguments |
---|
| 590 | rpc.rsp = &responses; |
---|
[438] | 591 | rpc.blocking = false; |
---|
| 592 | rpc.index = RPC_PROCESS_SIGACTION; |
---|
| 593 | rpc.thread = client; |
---|
| 594 | rpc.lid = client->core->lid; |
---|
[611] | 595 | rpc.args[0] = pid; |
---|
| 596 | rpc.args[1] = type; |
---|
[436] | 597 | |
---|
[611] | 598 | // take the lock protecting process copies |
---|
| 599 | remote_queuelock_acquire( lock_xp ); |
---|
| 600 | |
---|
[457] | 601 | // scan list of process copies |
---|
[409] | 602 | XLIST_FOREACH( root_xp , iter_xp ) |
---|
| 603 | { |
---|
[457] | 604 | // get extended pointers and cluster on process |
---|
[440] | 605 | process_xp = XLIST_ELEMENT( iter_xp , process_t , copies_list ); |
---|
| 606 | process_cxy = GET_CXY( process_xp ); |
---|
[457] | 607 | process_ptr = GET_PTR( process_xp ); |
---|
[440] | 608 | |
---|
[593] | 609 | if( process_cxy == local_cxy ) // process copy is local |
---|
[457] | 610 | { |
---|
| 611 | local = process_ptr; |
---|
| 612 | } |
---|
[593] | 613 | else // process copy is remote |
---|
[457] | 614 | { |
---|
| 615 | // update number of remote process copies |
---|
| 616 | remote_nr++; |
---|
| 617 | |
---|
[619] | 618 | // atomically increment RPC responses counter |
---|
| 619 | hal_atomic_add( &responses , 1 ); |
---|
[457] | 620 | |
---|
[438] | 621 | #if DEBUG_PROCESS_SIGACTION |
---|
| 622 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 623 | printk("\n[%s] thread[%x,%x] send RPC to cluster %x for process %x\n", |
---|
[583] | 624 | __FUNCTION__, client->process->pid, client->trdid, process_cxy, pid ); |
---|
[433] | 625 | #endif |
---|
[457] | 626 | // call RPC in target cluster |
---|
[619] | 627 | rpc_send( process_cxy , &rpc ); |
---|
[457] | 628 | } |
---|
| 629 | } // end list of copies |
---|
| 630 | |
---|
[409] | 631 | // release the lock protecting process copies |
---|
[564] | 632 | remote_queuelock_release( lock_xp ); |
---|
[409] | 633 | |
---|
[436] | 634 | // restore IRQs |
---|
| 635 | hal_restore_irq( save_sr); |
---|
[409] | 636 | |
---|
[457] | 637 | // - if there is remote process copies, the client thread deschedules, |
---|
| 638 | // (it will be unblocked by the last RPC server thread). |
---|
| 639 | // - if there is no remote copies, the client thread unblock itself. |
---|
| 640 | if( remote_nr ) |
---|
| 641 | { |
---|
| 642 | sched_yield("blocked on rpc_process_sigaction"); |
---|
| 643 | } |
---|
| 644 | else |
---|
| 645 | { |
---|
| 646 | thread_unblock( client_xp , THREAD_BLOCKED_RPC ); |
---|
| 647 | } |
---|
[409] | 648 | |
---|
[457] | 649 | // handle the local process copy if required |
---|
| 650 | if( local != NULL ) |
---|
| 651 | { |
---|
| 652 | |
---|
| 653 | #if DEBUG_PROCESS_SIGACTION |
---|
| 654 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 655 | printk("\n[%s] thread[%x,%x] handles local process %x in cluster %x\n", |
---|
[583] | 656 | __FUNCTION__, client->process->pid, client->trdid, pid , local_cxy ); |
---|
[457] | 657 | #endif |
---|
| 658 | if (type == DELETE_ALL_THREADS ) process_delete_threads ( local , client_xp ); |
---|
[583] | 659 | else if(type == BLOCK_ALL_THREADS ) process_block_threads ( local ); |
---|
[457] | 660 | else if(type == UNBLOCK_ALL_THREADS ) process_unblock_threads( local ); |
---|
| 661 | } |
---|
| 662 | |
---|
[438] | 663 | #if DEBUG_PROCESS_SIGACTION |
---|
[433] | 664 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 665 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 666 | printk("\n[%s] thread[%x,%x] exit after %s process %x / cycle %d\n", |
---|
[583] | 667 | __FUNCTION__, client->process->pid, client->trdid, |
---|
[457] | 668 | process_action_str( type ), pid, cycle ); |
---|
[433] | 669 | #endif |
---|
[416] | 670 | |
---|
[409] | 671 | } // end process_sigaction() |
---|
| 672 | |
---|
[433] | 673 | ///////////////////////////////////////////////// |
---|
[583] | 674 | void process_block_threads( process_t * process ) |
---|
[1] | 675 | { |
---|
[409] | 676 | thread_t * target; // pointer on target thread |
---|
[433] | 677 | thread_t * this; // pointer on calling thread |
---|
[564] | 678 | uint32_t ltid; // index in process th_tbl[] |
---|
[436] | 679 | cxy_t owner_cxy; // target process owner cluster |
---|
[409] | 680 | uint32_t count; // requests counter |
---|
[593] | 681 | volatile uint32_t ack_count; // acknowledges counter |
---|
[1] | 682 | |
---|
[416] | 683 | // get calling thread pointer |
---|
[433] | 684 | this = CURRENT_THREAD; |
---|
[407] | 685 | |
---|
[438] | 686 | #if DEBUG_PROCESS_SIGACTION |
---|
[564] | 687 | pid_t pid = process->pid; |
---|
[433] | 688 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 689 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 690 | printk("\n[%s] thread[%x,%x] enter for process %x in cluster %x / cycle %d\n", |
---|
[583] | 691 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy , cycle ); |
---|
[433] | 692 | #endif |
---|
[409] | 693 | |
---|
[564] | 694 | // check target process is an user process |
---|
[619] | 695 | assert( (LPID_FROM_PID( process->pid ) != 0 ), |
---|
| 696 | "process %x is not an user process\n", process->pid ); |
---|
[564] | 697 | |
---|
[610] | 698 | // get target process owner cluster |
---|
[564] | 699 | owner_cxy = CXY_FROM_PID( process->pid ); |
---|
| 700 | |
---|
[409] | 701 | // get lock protecting process th_tbl[] |
---|
[564] | 702 | rwlock_rd_acquire( &process->th_lock ); |
---|
[1] | 703 | |
---|
[440] | 704 | // loop on target process local threads |
---|
[409] | 705 | // we use both "ltid" and "count" because it can exist "holes" in th_tbl |
---|
[593] | 706 | // - if the calling thread and the target thread are not running on the same |
---|
| 707 | // core, we ask the target scheduler to acknowlege the blocking |
---|
| 708 | // to be sure that the target thread is not running. |
---|
| 709 | // - if the calling thread and the target thread are running on the same core, |
---|
| 710 | // we don't need confirmation from scheduler. |
---|
| 711 | |
---|
[436] | 712 | for( ltid = 0 , count = 0 , ack_count = 0 ; count < process->th_nr ; ltid++ ) |
---|
[1] | 713 | { |
---|
[409] | 714 | target = process->th_tbl[ltid]; |
---|
[1] | 715 | |
---|
[436] | 716 | if( target != NULL ) // thread exist |
---|
[1] | 717 | { |
---|
| 718 | count++; |
---|
[409] | 719 | |
---|
[583] | 720 | // set the global blocked bit in target thread descriptor. |
---|
| 721 | thread_block( XPTR( local_cxy , target ) , THREAD_BLOCKED_GLOBAL ); |
---|
[436] | 722 | |
---|
[583] | 723 | if( this->core->lid != target->core->lid ) |
---|
| 724 | { |
---|
| 725 | // increment responses counter |
---|
| 726 | hal_atomic_add( (void*)&ack_count , 1 ); |
---|
[409] | 727 | |
---|
[583] | 728 | // set FLAG_REQ_ACK and &ack_rsp_count in target descriptor |
---|
| 729 | thread_set_req_ack( target , (uint32_t *)&ack_count ); |
---|
[409] | 730 | |
---|
[583] | 731 | // force scheduling on target thread |
---|
| 732 | dev_pic_send_ipi( local_cxy , target->core->lid ); |
---|
[409] | 733 | } |
---|
[1] | 734 | } |
---|
[172] | 735 | } |
---|
| 736 | |
---|
[428] | 737 | // release lock protecting process th_tbl[] |
---|
[564] | 738 | rwlock_rd_release( &process->th_lock ); |
---|
[416] | 739 | |
---|
[593] | 740 | // wait other threads acknowledges TODO this could be improved... |
---|
[409] | 741 | while( 1 ) |
---|
| 742 | { |
---|
[610] | 743 | // exit when all scheduler acknowledges received |
---|
[436] | 744 | if ( ack_count == 0 ) break; |
---|
[409] | 745 | |
---|
| 746 | // wait 1000 cycles before retry |
---|
| 747 | hal_fixed_delay( 1000 ); |
---|
| 748 | } |
---|
[1] | 749 | |
---|
[438] | 750 | #if DEBUG_PROCESS_SIGACTION |
---|
[433] | 751 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 752 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 753 | printk("\n[%s] thread[%x,%x] exit for process %x in cluster %x / cycle %d\n", |
---|
| 754 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy , cycle ); |
---|
[433] | 755 | #endif |
---|
[409] | 756 | |
---|
[428] | 757 | } // end process_block_threads() |
---|
[409] | 758 | |
---|
[440] | 759 | ///////////////////////////////////////////////// |
---|
| 760 | void process_delete_threads( process_t * process, |
---|
| 761 | xptr_t client_xp ) |
---|
[409] | 762 | { |
---|
[433] | 763 | thread_t * this; // pointer on calling thread |
---|
[440] | 764 | thread_t * target; // local pointer on target thread |
---|
| 765 | xptr_t target_xp; // extended pointer on target thread |
---|
| 766 | cxy_t owner_cxy; // owner process cluster |
---|
[409] | 767 | uint32_t ltid; // index in process th_tbl |
---|
[440] | 768 | uint32_t count; // threads counter |
---|
[409] | 769 | |
---|
[433] | 770 | // get calling thread pointer |
---|
| 771 | this = CURRENT_THREAD; |
---|
[409] | 772 | |
---|
[440] | 773 | // get target process owner cluster |
---|
| 774 | owner_cxy = CXY_FROM_PID( process->pid ); |
---|
| 775 | |
---|
[438] | 776 | #if DEBUG_PROCESS_SIGACTION |
---|
[433] | 777 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 778 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 779 | printk("\n[%s] thread[%x,%x] enter in cluster %x for process %x / cycle %d\n", |
---|
[583] | 780 | __FUNCTION__, this->process->pid, this->trdid, local_cxy, process->pid, cycle ); |
---|
[433] | 781 | #endif |
---|
| 782 | |
---|
[564] | 783 | // check target process is an user process |
---|
[619] | 784 | assert( (LPID_FROM_PID( process->pid ) != 0), |
---|
| 785 | "process %x is not an user process\n", process->pid ); |
---|
[564] | 786 | |
---|
[409] | 787 | // get lock protecting process th_tbl[] |
---|
[583] | 788 | rwlock_wr_acquire( &process->th_lock ); |
---|
[409] | 789 | |
---|
[440] | 790 | // loop on target process local threads |
---|
[416] | 791 | // we use both "ltid" and "count" because it can exist "holes" in th_tbl |
---|
[440] | 792 | for( ltid = 0 , count = 0 ; count < process->th_nr ; ltid++ ) |
---|
[1] | 793 | { |
---|
[409] | 794 | target = process->th_tbl[ltid]; |
---|
[1] | 795 | |
---|
[440] | 796 | if( target != NULL ) // valid thread |
---|
[1] | 797 | { |
---|
[416] | 798 | count++; |
---|
[440] | 799 | target_xp = XPTR( local_cxy , target ); |
---|
[1] | 800 | |
---|
[564] | 801 | // main thread and client thread should not be deleted |
---|
[440] | 802 | if( ((ltid != 0) || (owner_cxy != local_cxy)) && // not main thread |
---|
| 803 | (client_xp) != target_xp ) // not client thread |
---|
| 804 | { |
---|
| 805 | // mark target thread for delete and block it |
---|
| 806 | thread_delete( target_xp , process->pid , false ); // not forced |
---|
| 807 | } |
---|
[409] | 808 | } |
---|
| 809 | } |
---|
[1] | 810 | |
---|
[428] | 811 | // release lock protecting process th_tbl[] |
---|
[583] | 812 | rwlock_wr_release( &process->th_lock ); |
---|
[407] | 813 | |
---|
[438] | 814 | #if DEBUG_PROCESS_SIGACTION |
---|
[433] | 815 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 816 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 817 | printk("\n[%s] thread[%x,%x] exit for process %x in cluster %x / cycle %d\n", |
---|
| 818 | __FUNCTION__, this->process->pid, this->trdid, process->pid, local_cxy , cycle ); |
---|
[433] | 819 | #endif |
---|
[407] | 820 | |
---|
[440] | 821 | } // end process_delete_threads() |
---|
[409] | 822 | |
---|
[440] | 823 | /////////////////////////////////////////////////// |
---|
| 824 | void process_unblock_threads( process_t * process ) |
---|
[409] | 825 | { |
---|
[440] | 826 | thread_t * target; // pointer on target thead |
---|
| 827 | thread_t * this; // pointer on calling thread |
---|
[409] | 828 | uint32_t ltid; // index in process th_tbl |
---|
[440] | 829 | uint32_t count; // requests counter |
---|
[409] | 830 | |
---|
[440] | 831 | // get calling thread pointer |
---|
| 832 | this = CURRENT_THREAD; |
---|
| 833 | |
---|
[438] | 834 | #if DEBUG_PROCESS_SIGACTION |
---|
[564] | 835 | pid_t pid = process->pid; |
---|
[433] | 836 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 837 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 838 | printk("\n[%s] thread[%x,%x] enter for process %x in cluster %x / cycle %d\n", |
---|
[583] | 839 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy , cycle ); |
---|
[433] | 840 | #endif |
---|
| 841 | |
---|
[564] | 842 | // check target process is an user process |
---|
[619] | 843 | assert( ( LPID_FROM_PID( process->pid ) != 0 ), |
---|
| 844 | "process %x is not an user process\n", process->pid ); |
---|
[564] | 845 | |
---|
[416] | 846 | // get lock protecting process th_tbl[] |
---|
[564] | 847 | rwlock_rd_acquire( &process->th_lock ); |
---|
[416] | 848 | |
---|
[440] | 849 | // loop on process threads to unblock all threads |
---|
[416] | 850 | // we use both "ltid" and "count" because it can exist "holes" in th_tbl |
---|
[440] | 851 | for( ltid = 0 , count = 0 ; count < process->th_nr ; ltid++ ) |
---|
[409] | 852 | { |
---|
[416] | 853 | target = process->th_tbl[ltid]; |
---|
[409] | 854 | |
---|
[440] | 855 | if( target != NULL ) // thread found |
---|
[409] | 856 | { |
---|
| 857 | count++; |
---|
[440] | 858 | |
---|
| 859 | // reset the global blocked bit in target thread descriptor. |
---|
| 860 | thread_unblock( XPTR( local_cxy , target ) , THREAD_BLOCKED_GLOBAL ); |
---|
[1] | 861 | } |
---|
| 862 | } |
---|
| 863 | |
---|
[428] | 864 | // release lock protecting process th_tbl[] |
---|
[564] | 865 | rwlock_rd_release( &process->th_lock ); |
---|
[407] | 866 | |
---|
[438] | 867 | #if DEBUG_PROCESS_SIGACTION |
---|
[433] | 868 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 869 | if( DEBUG_PROCESS_SIGACTION < cycle ) |
---|
[593] | 870 | printk("\n[%s] thread[%x,%x] exit for process %x in cluster %x / cycle %d\n", |
---|
[583] | 871 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy, cycle ); |
---|
[433] | 872 | #endif |
---|
[1] | 873 | |
---|
[440] | 874 | } // end process_unblock_threads() |
---|
[407] | 875 | |
---|
[1] | 876 | /////////////////////////////////////////////// |
---|
| 877 | process_t * process_get_local_copy( pid_t pid ) |
---|
| 878 | { |
---|
| 879 | error_t error; |
---|
[172] | 880 | process_t * process_ptr; // local pointer on process |
---|
[23] | 881 | xptr_t process_xp; // extended pointer on process |
---|
[1] | 882 | |
---|
| 883 | cluster_t * cluster = LOCAL_CLUSTER; |
---|
| 884 | |
---|
[564] | 885 | #if DEBUG_PROCESS_GET_LOCAL_COPY |
---|
| 886 | thread_t * this = CURRENT_THREAD; |
---|
| 887 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
| 888 | if( DEBUG_PROCESS_GET_LOCAL_COPY < cycle ) |
---|
[593] | 889 | printk("\n[%s] thread[%x,%x] enter for process %x in cluster %x / cycle %d\n", |
---|
[583] | 890 | __FUNCTION__, this->process->pid, this->trdid, pid, local_cxy, cycle ); |
---|
[564] | 891 | #endif |
---|
| 892 | |
---|
[1] | 893 | // get lock protecting local list of processes |
---|
[564] | 894 | remote_queuelock_acquire( XPTR( local_cxy , &cluster->pmgr.local_lock ) ); |
---|
[1] | 895 | |
---|
| 896 | // scan the local list of process descriptors to find the process |
---|
[23] | 897 | xptr_t iter; |
---|
| 898 | bool_t found = false; |
---|
| 899 | XLIST_FOREACH( XPTR( local_cxy , &cluster->pmgr.local_root ) , iter ) |
---|
[1] | 900 | { |
---|
[23] | 901 | process_xp = XLIST_ELEMENT( iter , process_t , local_list ); |
---|
[435] | 902 | process_ptr = GET_PTR( process_xp ); |
---|
[23] | 903 | if( process_ptr->pid == pid ) |
---|
[1] | 904 | { |
---|
| 905 | found = true; |
---|
| 906 | break; |
---|
| 907 | } |
---|
| 908 | } |
---|
| 909 | |
---|
| 910 | // release lock protecting local list of processes |
---|
[564] | 911 | remote_queuelock_release( XPTR( local_cxy , &cluster->pmgr.local_lock ) ); |
---|
[1] | 912 | |
---|
[172] | 913 | // allocate memory for a new local process descriptor |
---|
[440] | 914 | // and initialise it from reference cluster if not found |
---|
[1] | 915 | if( !found ) |
---|
| 916 | { |
---|
| 917 | // get extended pointer on reference process descriptor |
---|
[23] | 918 | xptr_t ref_xp = cluster_get_reference_process_from_pid( pid ); |
---|
[1] | 919 | |
---|
[492] | 920 | assert( (ref_xp != XPTR_NULL) , "illegal pid\n" ); |
---|
[23] | 921 | |
---|
[1] | 922 | // allocate memory for local process descriptor |
---|
[23] | 923 | process_ptr = process_alloc(); |
---|
[443] | 924 | |
---|
[23] | 925 | if( process_ptr == NULL ) return NULL; |
---|
[1] | 926 | |
---|
| 927 | // initialize local process descriptor copy |
---|
[23] | 928 | error = process_copy_init( process_ptr , ref_xp ); |
---|
[443] | 929 | |
---|
[1] | 930 | if( error ) return NULL; |
---|
| 931 | } |
---|
| 932 | |
---|
[440] | 933 | #if DEBUG_PROCESS_GET_LOCAL_COPY |
---|
[564] | 934 | cycle = (uint32_t)hal_get_cycles(); |
---|
[440] | 935 | if( DEBUG_PROCESS_GET_LOCAL_COPY < cycle ) |
---|
[593] | 936 | printk("\n[%s] thread[%x,%x] exit in cluster %x / process %x / cycle %d\n", |
---|
[583] | 937 | __FUNCTION__, this->process->pid, this->trdid, local_cxy, process_ptr, cycle ); |
---|
[440] | 938 | #endif |
---|
| 939 | |
---|
[23] | 940 | return process_ptr; |
---|
[1] | 941 | |
---|
[409] | 942 | } // end process_get_local_copy() |
---|
| 943 | |
---|
[436] | 944 | //////////////////////////////////////////// |
---|
| 945 | pid_t process_get_ppid( xptr_t process_xp ) |
---|
| 946 | { |
---|
| 947 | cxy_t process_cxy; |
---|
| 948 | process_t * process_ptr; |
---|
| 949 | xptr_t parent_xp; |
---|
| 950 | cxy_t parent_cxy; |
---|
| 951 | process_t * parent_ptr; |
---|
| 952 | |
---|
| 953 | // get process cluster and local pointer |
---|
| 954 | process_cxy = GET_CXY( process_xp ); |
---|
| 955 | process_ptr = GET_PTR( process_xp ); |
---|
| 956 | |
---|
| 957 | // get pointers on parent process |
---|
[564] | 958 | parent_xp = (xptr_t)hal_remote_l64( XPTR( process_cxy , &process_ptr->parent_xp ) ); |
---|
[436] | 959 | parent_cxy = GET_CXY( parent_xp ); |
---|
| 960 | parent_ptr = GET_PTR( parent_xp ); |
---|
| 961 | |
---|
[564] | 962 | return hal_remote_l32( XPTR( parent_cxy , &parent_ptr->pid ) ); |
---|
[436] | 963 | } |
---|
| 964 | |
---|
[1] | 965 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
| 966 | // File descriptor array related functions |
---|
| 967 | ////////////////////////////////////////////////////////////////////////////////////////// |
---|
| 968 | |
---|
| 969 | /////////////////////////////////////////// |
---|
| 970 | void process_fd_init( process_t * process ) |
---|
| 971 | { |
---|
| 972 | uint32_t fd; |
---|
| 973 | |
---|
[610] | 974 | // initialize lock |
---|
[564] | 975 | remote_queuelock_init( XPTR( local_cxy , &process->fd_array.lock ), LOCK_PROCESS_FDARRAY ); |
---|
[1] | 976 | |
---|
[610] | 977 | // initialize number of open files |
---|
[23] | 978 | process->fd_array.current = 0; |
---|
| 979 | |
---|
[1] | 980 | // initialize array |
---|
[23] | 981 | for ( fd = 0 ; fd < CONFIG_PROCESS_FILE_MAX_NR ; fd++ ) |
---|
[1] | 982 | { |
---|
| 983 | process->fd_array.array[fd] = XPTR_NULL; |
---|
| 984 | } |
---|
| 985 | } |
---|
[610] | 986 | //////////////////////////////////////////////////// |
---|
| 987 | error_t process_fd_register( xptr_t process_xp, |
---|
[407] | 988 | xptr_t file_xp, |
---|
| 989 | uint32_t * fdid ) |
---|
[1] | 990 | { |
---|
| 991 | bool_t found; |
---|
[23] | 992 | uint32_t id; |
---|
| 993 | xptr_t xp; |
---|
[1] | 994 | |
---|
[23] | 995 | // get reference process cluster and local pointer |
---|
[610] | 996 | process_t * process_ptr = GET_PTR( process_xp ); |
---|
| 997 | cxy_t process_cxy = GET_CXY( process_xp ); |
---|
[23] | 998 | |
---|
[610] | 999 | // check client process is reference process |
---|
| 1000 | assert( (process_xp == hal_remote_l64( XPTR( process_cxy , &process_ptr->ref_xp ) ) ), |
---|
| 1001 | "client process must be reference process\n" ); |
---|
| 1002 | |
---|
| 1003 | #if DEBUG_PROCESS_FD_REGISTER |
---|
| 1004 | thread_t * this = CURRENT_THREAD; |
---|
| 1005 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
| 1006 | pid_t pid = hal_remote_l32( XPTR( process_cxy , &process_ptr->pid) ); |
---|
| 1007 | if( DEBUG_PROCESS_FD_REGISTER < cycle ) |
---|
| 1008 | printk("\n[%s] thread[%x,%x] enter for process %x / cycle %d\n", |
---|
| 1009 | __FUNCTION__, this->process->pid, this->trdid, pid, cycle ); |
---|
| 1010 | #endif |
---|
| 1011 | |
---|
| 1012 | // build extended pointer on lock protecting reference fd_array |
---|
| 1013 | xptr_t lock_xp = XPTR( process_cxy , &process_ptr->fd_array.lock ); |
---|
| 1014 | |
---|
[23] | 1015 | // take lock protecting reference fd_array |
---|
[610] | 1016 | remote_queuelock_acquire( lock_xp ); |
---|
[23] | 1017 | |
---|
[1] | 1018 | found = false; |
---|
| 1019 | |
---|
[23] | 1020 | for ( id = 0; id < CONFIG_PROCESS_FILE_MAX_NR ; id++ ) |
---|
[1] | 1021 | { |
---|
[610] | 1022 | xp = hal_remote_l64( XPTR( process_cxy , &process_ptr->fd_array.array[id] ) ); |
---|
[23] | 1023 | if ( xp == XPTR_NULL ) |
---|
[1] | 1024 | { |
---|
[564] | 1025 | // update reference fd_array |
---|
[610] | 1026 | hal_remote_s64( XPTR( process_cxy , &process_ptr->fd_array.array[id] ) , file_xp ); |
---|
| 1027 | hal_remote_atomic_add( XPTR( process_cxy , &process_ptr->fd_array.current ) , 1 ); |
---|
[564] | 1028 | |
---|
| 1029 | // exit |
---|
| 1030 | *fdid = id; |
---|
[1] | 1031 | found = true; |
---|
| 1032 | break; |
---|
| 1033 | } |
---|
| 1034 | } |
---|
| 1035 | |
---|
[610] | 1036 | // release lock protecting fd_array |
---|
| 1037 | remote_queuelock_release( lock_xp ); |
---|
[1] | 1038 | |
---|
[610] | 1039 | #if DEBUG_PROCESS_FD_REGISTER |
---|
| 1040 | cycle = (uint32_t)hal_get_cycles(); |
---|
| 1041 | if( DEBUG_PROCESS_FD_REGISTER < cycle ) |
---|
| 1042 | printk("\n[%s] thread[%x,%x] exit for process %x / fdid %d / cycle %d\n", |
---|
| 1043 | __FUNCTION__, this->process->pid, this->trdid, pid, id, cycle ); |
---|
| 1044 | #endif |
---|
| 1045 | |
---|
[428] | 1046 | if ( !found ) return -1; |
---|
[1] | 1047 | else return 0; |
---|
| 1048 | |
---|
[610] | 1049 | } // end process_fd_register() |
---|
| 1050 | |
---|
[172] | 1051 | //////////////////////////////////////////////// |
---|
[23] | 1052 | xptr_t process_fd_get_xptr( process_t * process, |
---|
[407] | 1053 | uint32_t fdid ) |
---|
[1] | 1054 | { |
---|
[23] | 1055 | xptr_t file_xp; |
---|
[564] | 1056 | xptr_t lock_xp; |
---|
[1] | 1057 | |
---|
[23] | 1058 | // access local copy of process descriptor |
---|
[407] | 1059 | file_xp = process->fd_array.array[fdid]; |
---|
[1] | 1060 | |
---|
[23] | 1061 | if( file_xp == XPTR_NULL ) |
---|
| 1062 | { |
---|
| 1063 | // get reference process cluster and local pointer |
---|
| 1064 | xptr_t ref_xp = process->ref_xp; |
---|
| 1065 | cxy_t ref_cxy = GET_CXY( ref_xp ); |
---|
[435] | 1066 | process_t * ref_ptr = GET_PTR( ref_xp ); |
---|
[1] | 1067 | |
---|
[564] | 1068 | // build extended pointer on lock protecting reference fd_array |
---|
| 1069 | lock_xp = XPTR( ref_cxy , &ref_ptr->fd_array.lock ); |
---|
| 1070 | |
---|
| 1071 | // take lock protecting reference fd_array |
---|
| 1072 | remote_queuelock_acquire( lock_xp ); |
---|
| 1073 | |
---|
[23] | 1074 | // access reference process descriptor |
---|
[564] | 1075 | file_xp = hal_remote_l64( XPTR( ref_cxy , &ref_ptr->fd_array.array[fdid] ) ); |
---|
[1] | 1076 | |
---|
[23] | 1077 | // update local fd_array if found |
---|
[564] | 1078 | if( file_xp != XPTR_NULL ) process->fd_array.array[fdid] = file_xp; |
---|
| 1079 | |
---|
| 1080 | // release lock protecting reference fd_array |
---|
| 1081 | remote_queuelock_release( lock_xp ); |
---|
[23] | 1082 | } |
---|
[1] | 1083 | |
---|
[23] | 1084 | return file_xp; |
---|
[1] | 1085 | |
---|
[407] | 1086 | } // end process_fd_get_xptr() |
---|
| 1087 | |
---|
[1] | 1088 | /////////////////////////////////////////// |
---|
| 1089 | void process_fd_remote_copy( xptr_t dst_xp, |
---|
| 1090 | xptr_t src_xp ) |
---|
| 1091 | { |
---|
| 1092 | uint32_t fd; |
---|
| 1093 | xptr_t entry; |
---|
| 1094 | |
---|
| 1095 | // get cluster and local pointer for src fd_array |
---|
| 1096 | cxy_t src_cxy = GET_CXY( src_xp ); |
---|
[435] | 1097 | fd_array_t * src_ptr = GET_PTR( src_xp ); |
---|
[1] | 1098 | |
---|
| 1099 | // get cluster and local pointer for dst fd_array |
---|
| 1100 | cxy_t dst_cxy = GET_CXY( dst_xp ); |
---|
[435] | 1101 | fd_array_t * dst_ptr = GET_PTR( dst_xp ); |
---|
[1] | 1102 | |
---|
| 1103 | // get the remote lock protecting the src fd_array |
---|
[564] | 1104 | remote_queuelock_acquire( XPTR( src_cxy , &src_ptr->lock ) ); |
---|
[1] | 1105 | |
---|
[428] | 1106 | // loop on all fd_array entries |
---|
| 1107 | for( fd = 0 ; fd < CONFIG_PROCESS_FILE_MAX_NR ; fd++ ) |
---|
[1] | 1108 | { |
---|
[564] | 1109 | entry = (xptr_t)hal_remote_l64( XPTR( src_cxy , &src_ptr->array[fd] ) ); |
---|
[1] | 1110 | |
---|
| 1111 | if( entry != XPTR_NULL ) |
---|
| 1112 | { |
---|
[459] | 1113 | // increment file descriptor refcount |
---|
[1] | 1114 | vfs_file_count_up( entry ); |
---|
| 1115 | |
---|
| 1116 | // copy entry in destination process fd_array |
---|
[564] | 1117 | hal_remote_s64( XPTR( dst_cxy , &dst_ptr->array[fd] ) , entry ); |
---|
[1] | 1118 | } |
---|
| 1119 | } |
---|
| 1120 | |
---|
| 1121 | // release lock on source process fd_array |
---|
[564] | 1122 | remote_queuelock_release( XPTR( src_cxy , &src_ptr->lock ) ); |
---|
[1] | 1123 | |
---|
[407] | 1124 | } // end process_fd_remote_copy() |
---|
| 1125 | |
---|
[564] | 1126 | |
---|
| 1127 | //////////////////////////////////// |
---|
| 1128 | bool_t process_fd_array_full( void ) |
---|
| 1129 | { |
---|
| 1130 | // get extended pointer on reference process |
---|
| 1131 | xptr_t ref_xp = CURRENT_THREAD->process->ref_xp; |
---|
| 1132 | |
---|
| 1133 | // get reference process cluster and local pointer |
---|
| 1134 | process_t * ref_ptr = GET_PTR( ref_xp ); |
---|
| 1135 | cxy_t ref_cxy = GET_CXY( ref_xp ); |
---|
| 1136 | |
---|
| 1137 | // get number of open file descriptors from reference fd_array |
---|
| 1138 | uint32_t current = hal_remote_l32( XPTR( ref_cxy , &ref_ptr->fd_array.current ) ); |
---|
| 1139 | |
---|
| 1140 | return ( current >= CONFIG_PROCESS_FILE_MAX_NR ); |
---|
| 1141 | } |
---|
| 1142 | |
---|
| 1143 | |
---|
[1] | 1144 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 1145 | // Thread related functions |
---|
| 1146 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 1147 | |
---|
| 1148 | ///////////////////////////////////////////////////// |
---|
| 1149 | error_t process_register_thread( process_t * process, |
---|
| 1150 | thread_t * thread, |
---|
| 1151 | trdid_t * trdid ) |
---|
| 1152 | { |
---|
[472] | 1153 | ltid_t ltid; |
---|
| 1154 | bool_t found = false; |
---|
| 1155 | |
---|
[564] | 1156 | // check arguments |
---|
| 1157 | assert( (process != NULL) , "process argument is NULL" ); |
---|
| 1158 | assert( (thread != NULL) , "thread argument is NULL" ); |
---|
[1] | 1159 | |
---|
[564] | 1160 | // get the lock protecting th_tbl for all threads |
---|
| 1161 | // but the idle thread executing kernel_init (cannot yield) |
---|
| 1162 | if( thread->type != THREAD_IDLE ) rwlock_wr_acquire( &process->th_lock ); |
---|
[1] | 1163 | |
---|
[583] | 1164 | // scan th_tbl |
---|
[564] | 1165 | for( ltid = 0 ; ltid < CONFIG_THREADS_MAX_PER_CLUSTER ; ltid++ ) |
---|
[1] | 1166 | { |
---|
| 1167 | if( process->th_tbl[ltid] == NULL ) |
---|
| 1168 | { |
---|
| 1169 | found = true; |
---|
| 1170 | break; |
---|
| 1171 | } |
---|
| 1172 | } |
---|
| 1173 | |
---|
| 1174 | if( found ) |
---|
| 1175 | { |
---|
| 1176 | // register thread in th_tbl[] |
---|
| 1177 | process->th_tbl[ltid] = thread; |
---|
| 1178 | process->th_nr++; |
---|
| 1179 | |
---|
| 1180 | // returns trdid |
---|
| 1181 | *trdid = TRDID( local_cxy , ltid ); |
---|
| 1182 | } |
---|
| 1183 | |
---|
[583] | 1184 | // release the lock protecting th_tbl |
---|
[564] | 1185 | if( thread->type != THREAD_IDLE ) rwlock_wr_release( &process->th_lock ); |
---|
[428] | 1186 | |
---|
[564] | 1187 | return (found) ? 0 : 0xFFFFFFFF; |
---|
[204] | 1188 | |
---|
| 1189 | } // end process_register_thread() |
---|
| 1190 | |
---|
[443] | 1191 | ///////////////////////////////////////////////// |
---|
| 1192 | bool_t process_remove_thread( thread_t * thread ) |
---|
[1] | 1193 | { |
---|
[443] | 1194 | uint32_t count; // number of threads in local process descriptor |
---|
| 1195 | |
---|
[1] | 1196 | process_t * process = thread->process; |
---|
| 1197 | |
---|
| 1198 | // get thread local index |
---|
| 1199 | ltid_t ltid = LTID_FROM_TRDID( thread->trdid ); |
---|
[564] | 1200 | |
---|
| 1201 | // get the lock protecting th_tbl[] |
---|
| 1202 | rwlock_wr_acquire( &process->th_lock ); |
---|
[428] | 1203 | |
---|
[583] | 1204 | // get number of threads |
---|
[443] | 1205 | count = process->th_nr; |
---|
[428] | 1206 | |
---|
[583] | 1207 | // check thread |
---|
| 1208 | assert( (thread != NULL) , "thread argument is NULL" ); |
---|
| 1209 | |
---|
[564] | 1210 | // check th_nr value |
---|
[624] | 1211 | assert( (count > 0) , "process th_nr cannot be 0" ); |
---|
[443] | 1212 | |
---|
[1] | 1213 | // remove thread from th_tbl[] |
---|
| 1214 | process->th_tbl[ltid] = NULL; |
---|
[450] | 1215 | process->th_nr = count-1; |
---|
[1] | 1216 | |
---|
[583] | 1217 | // release lock protecting th_tbl |
---|
[564] | 1218 | rwlock_wr_release( &process->th_lock ); |
---|
[428] | 1219 | |
---|
[443] | 1220 | return (count == 1); |
---|
| 1221 | |
---|
[450] | 1222 | } // end process_remove_thread() |
---|
[204] | 1223 | |
---|
[408] | 1224 | ///////////////////////////////////////////////////////// |
---|
| 1225 | error_t process_make_fork( xptr_t parent_process_xp, |
---|
| 1226 | xptr_t parent_thread_xp, |
---|
| 1227 | pid_t * child_pid, |
---|
| 1228 | thread_t ** child_thread ) |
---|
[1] | 1229 | { |
---|
[408] | 1230 | process_t * process; // local pointer on child process descriptor |
---|
| 1231 | thread_t * thread; // local pointer on child thread descriptor |
---|
| 1232 | pid_t new_pid; // process identifier for child process |
---|
| 1233 | pid_t parent_pid; // process identifier for parent process |
---|
| 1234 | xptr_t ref_xp; // extended pointer on reference process |
---|
[428] | 1235 | xptr_t vfs_bin_xp; // extended pointer on .elf file |
---|
[408] | 1236 | error_t error; |
---|
[1] | 1237 | |
---|
[408] | 1238 | // get cluster and local pointer for parent process |
---|
| 1239 | cxy_t parent_process_cxy = GET_CXY( parent_process_xp ); |
---|
[435] | 1240 | process_t * parent_process_ptr = GET_PTR( parent_process_xp ); |
---|
[101] | 1241 | |
---|
[428] | 1242 | // get parent process PID and extended pointer on .elf file |
---|
[564] | 1243 | parent_pid = hal_remote_l32 (XPTR( parent_process_cxy , &parent_process_ptr->pid)); |
---|
| 1244 | vfs_bin_xp = hal_remote_l64(XPTR( parent_process_cxy , &parent_process_ptr->vfs_bin_xp)); |
---|
[428] | 1245 | |
---|
[564] | 1246 | // get extended pointer on reference process |
---|
| 1247 | ref_xp = hal_remote_l64( XPTR( parent_process_cxy , &parent_process_ptr->ref_xp ) ); |
---|
[438] | 1248 | |
---|
[564] | 1249 | // check parent process is the reference process |
---|
| 1250 | assert( (parent_process_xp == ref_xp ) , |
---|
[624] | 1251 | "parent process must be the reference process" ); |
---|
[407] | 1252 | |
---|
[438] | 1253 | #if DEBUG_PROCESS_MAKE_FORK |
---|
[583] | 1254 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
| 1255 | thread_t * this = CURRENT_THREAD; |
---|
| 1256 | trdid_t trdid = this->trdid; |
---|
| 1257 | pid_t pid = this->process->pid; |
---|
[438] | 1258 | if( DEBUG_PROCESS_MAKE_FORK < cycle ) |
---|
[593] | 1259 | printk("\n[%s] thread[%x,%x] enter / cluster %x / cycle %d\n", |
---|
[583] | 1260 | __FUNCTION__, pid, trdid, local_cxy, cycle ); |
---|
[433] | 1261 | #endif |
---|
[172] | 1262 | |
---|
[408] | 1263 | // allocate a process descriptor |
---|
| 1264 | process = process_alloc(); |
---|
| 1265 | if( process == NULL ) |
---|
| 1266 | { |
---|
| 1267 | printk("\n[ERROR] in %s : cannot get process in cluster %x\n", |
---|
| 1268 | __FUNCTION__, local_cxy ); |
---|
| 1269 | return -1; |
---|
| 1270 | } |
---|
[1] | 1271 | |
---|
[408] | 1272 | // allocate a child PID from local cluster |
---|
[416] | 1273 | error = cluster_pid_alloc( process , &new_pid ); |
---|
[428] | 1274 | if( error ) |
---|
[1] | 1275 | { |
---|
[408] | 1276 | printk("\n[ERROR] in %s : cannot get PID in cluster %x\n", |
---|
| 1277 | __FUNCTION__, local_cxy ); |
---|
| 1278 | process_free( process ); |
---|
| 1279 | return -1; |
---|
[1] | 1280 | } |
---|
[408] | 1281 | |
---|
[469] | 1282 | #if( DEBUG_PROCESS_MAKE_FORK & 1 ) |
---|
[457] | 1283 | cycle = (uint32_t)hal_get_cycles(); |
---|
| 1284 | if( DEBUG_PROCESS_MAKE_FORK < cycle ) |
---|
[593] | 1285 | printk("\n[%s] thread[%x,%x] allocated process %x / cycle %d\n", |
---|
[583] | 1286 | __FUNCTION__, pid, trdid, new_pid, cycle ); |
---|
[457] | 1287 | #endif |
---|
| 1288 | |
---|
[408] | 1289 | // initializes child process descriptor from parent process descriptor |
---|
| 1290 | process_reference_init( process, |
---|
| 1291 | new_pid, |
---|
| 1292 | parent_process_xp ); |
---|
| 1293 | |
---|
[438] | 1294 | #if( DEBUG_PROCESS_MAKE_FORK & 1 ) |
---|
[433] | 1295 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1296 | if( DEBUG_PROCESS_MAKE_FORK < cycle ) |
---|
[593] | 1297 | printk("\n[%s] thread[%x,%x] initialized child_process %x / cycle %d\n", |
---|
[583] | 1298 | __FUNCTION__, pid, trdid, new_pid, cycle ); |
---|
[433] | 1299 | #endif |
---|
[408] | 1300 | |
---|
[457] | 1301 | |
---|
[408] | 1302 | // copy VMM from parent descriptor to child descriptor |
---|
| 1303 | error = vmm_fork_copy( process, |
---|
| 1304 | parent_process_xp ); |
---|
| 1305 | if( error ) |
---|
[101] | 1306 | { |
---|
[408] | 1307 | printk("\n[ERROR] in %s : cannot copy VMM in cluster %x\n", |
---|
| 1308 | __FUNCTION__, local_cxy ); |
---|
| 1309 | process_free( process ); |
---|
| 1310 | cluster_pid_release( new_pid ); |
---|
| 1311 | return -1; |
---|
[101] | 1312 | } |
---|
[172] | 1313 | |
---|
[438] | 1314 | #if( DEBUG_PROCESS_MAKE_FORK & 1 ) |
---|
[433] | 1315 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1316 | if( DEBUG_PROCESS_MAKE_FORK < cycle ) |
---|
[593] | 1317 | printk("\n[%s] thread[%x,%x] copied VMM from parent to child / cycle %d\n", |
---|
[583] | 1318 | __FUNCTION__, pid, trdid, cycle ); |
---|
[433] | 1319 | #endif |
---|
[407] | 1320 | |
---|
[564] | 1321 | // if parent_process is INIT, or if parent_process is the TXT owner, |
---|
| 1322 | // the child_process becomes the owner of its TXT terminal |
---|
| 1323 | if( (parent_pid == 1) || process_txt_is_owner( parent_process_xp ) ) |
---|
[457] | 1324 | { |
---|
| 1325 | process_txt_set_ownership( XPTR( local_cxy , process ) ); |
---|
| 1326 | |
---|
| 1327 | #if( DEBUG_PROCESS_MAKE_FORK & 1 ) |
---|
| 1328 | cycle = (uint32_t)hal_get_cycles(); |
---|
| 1329 | if( DEBUG_PROCESS_MAKE_EXEC < cycle ) |
---|
[593] | 1330 | printk("\n[%s] thread[%x,%x] / child takes TXT ownership / cycle %d\n", |
---|
[583] | 1331 | __FUNCTION__ , pid, trdid, cycle ); |
---|
[457] | 1332 | #endif |
---|
| 1333 | |
---|
| 1334 | } |
---|
| 1335 | |
---|
[428] | 1336 | // update extended pointer on .elf file |
---|
| 1337 | process->vfs_bin_xp = vfs_bin_xp; |
---|
| 1338 | |
---|
[408] | 1339 | // create child thread descriptor from parent thread descriptor |
---|
| 1340 | error = thread_user_fork( parent_thread_xp, |
---|
| 1341 | process, |
---|
| 1342 | &thread ); |
---|
| 1343 | if( error ) |
---|
| 1344 | { |
---|
| 1345 | printk("\n[ERROR] in %s : cannot create thread in cluster %x\n", |
---|
| 1346 | __FUNCTION__, local_cxy ); |
---|
| 1347 | process_free( process ); |
---|
| 1348 | cluster_pid_release( new_pid ); |
---|
| 1349 | return -1; |
---|
| 1350 | } |
---|
[172] | 1351 | |
---|
[564] | 1352 | // check main thread LTID |
---|
| 1353 | assert( (LTID_FROM_TRDID(thread->trdid) == 0) , |
---|
[624] | 1354 | "main thread must have LTID == 0" ); |
---|
[428] | 1355 | |
---|
[564] | 1356 | #if( DEBUG_PROCESS_MAKE_FORK & 1 ) |
---|
[433] | 1357 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1358 | if( DEBUG_PROCESS_MAKE_FORK < cycle ) |
---|
[593] | 1359 | printk("\n[%s] thread[%x,%x] created main thread %x / cycle %d\n", |
---|
[583] | 1360 | __FUNCTION__, pid, trdid, thread, cycle ); |
---|
[433] | 1361 | #endif |
---|
[1] | 1362 | |
---|
[433] | 1363 | // set Copy_On_Write flag in parent process GPT |
---|
[408] | 1364 | // this includes all replicated GPT copies |
---|
| 1365 | if( parent_process_cxy == local_cxy ) // reference is local |
---|
| 1366 | { |
---|
| 1367 | vmm_set_cow( parent_process_ptr ); |
---|
| 1368 | } |
---|
| 1369 | else // reference is remote |
---|
| 1370 | { |
---|
| 1371 | rpc_vmm_set_cow_client( parent_process_cxy, |
---|
| 1372 | parent_process_ptr ); |
---|
| 1373 | } |
---|
[1] | 1374 | |
---|
[433] | 1375 | // set Copy_On_Write flag in child process GPT |
---|
| 1376 | vmm_set_cow( process ); |
---|
| 1377 | |
---|
[438] | 1378 | #if( DEBUG_PROCESS_MAKE_FORK & 1 ) |
---|
[433] | 1379 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1380 | if( DEBUG_PROCESS_MAKE_FORK < cycle ) |
---|
[593] | 1381 | printk("\n[%s] thread[%x,%x] set COW in parent and child / cycle %d\n", |
---|
[583] | 1382 | __FUNCTION__, pid, trdid, cycle ); |
---|
[433] | 1383 | #endif |
---|
[101] | 1384 | |
---|
[428] | 1385 | // get extended pointers on parent children_root, children_lock and children_nr |
---|
| 1386 | xptr_t children_root_xp = XPTR( parent_process_cxy , &parent_process_ptr->children_root ); |
---|
| 1387 | xptr_t children_lock_xp = XPTR( parent_process_cxy , &parent_process_ptr->children_lock ); |
---|
| 1388 | xptr_t children_nr_xp = XPTR( parent_process_cxy , &parent_process_ptr->children_nr ); |
---|
[101] | 1389 | |
---|
[428] | 1390 | // register process in parent children list |
---|
[564] | 1391 | remote_queuelock_acquire( children_lock_xp ); |
---|
[428] | 1392 | xlist_add_last( children_root_xp , XPTR( local_cxy , &process->children_list ) ); |
---|
| 1393 | hal_remote_atomic_add( children_nr_xp , 1 ); |
---|
[564] | 1394 | remote_queuelock_release( children_lock_xp ); |
---|
[204] | 1395 | |
---|
[408] | 1396 | // return success |
---|
| 1397 | *child_thread = thread; |
---|
| 1398 | *child_pid = new_pid; |
---|
[1] | 1399 | |
---|
[438] | 1400 | #if DEBUG_PROCESS_MAKE_FORK |
---|
[433] | 1401 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1402 | if( DEBUG_PROCESS_MAKE_FORK < cycle ) |
---|
[593] | 1403 | printk("\n[%s] thread[%x,%x] exit / created process %x / cycle %d\n", |
---|
[583] | 1404 | __FUNCTION__, pid, trdid, new_pid, cycle ); |
---|
[433] | 1405 | #endif |
---|
[428] | 1406 | |
---|
[408] | 1407 | return 0; |
---|
| 1408 | |
---|
[416] | 1409 | } // end process_make_fork() |
---|
[408] | 1410 | |
---|
| 1411 | ///////////////////////////////////////////////////// |
---|
| 1412 | error_t process_make_exec( exec_info_t * exec_info ) |
---|
| 1413 | { |
---|
[457] | 1414 | thread_t * thread; // local pointer on this thread |
---|
| 1415 | process_t * process; // local pointer on this process |
---|
| 1416 | pid_t pid; // this process identifier |
---|
[610] | 1417 | xptr_t ref_xp; // reference process for this process |
---|
[441] | 1418 | error_t error; // value returned by called functions |
---|
[457] | 1419 | char * path; // path to .elf file |
---|
| 1420 | xptr_t file_xp; // extended pointer on .elf file descriptor |
---|
| 1421 | uint32_t file_id; // file index in fd_array |
---|
| 1422 | uint32_t args_nr; // number of main thread arguments |
---|
| 1423 | char ** args_pointers; // array of pointers on main thread arguments |
---|
[446] | 1424 | |
---|
[610] | 1425 | // get thread, process, pid and ref_xp |
---|
[457] | 1426 | thread = CURRENT_THREAD; |
---|
| 1427 | process = thread->process; |
---|
| 1428 | pid = process->pid; |
---|
[610] | 1429 | ref_xp = process->ref_xp; |
---|
[408] | 1430 | |
---|
[457] | 1431 | // get relevant infos from exec_info |
---|
| 1432 | path = exec_info->path; |
---|
| 1433 | args_nr = exec_info->args_nr; |
---|
| 1434 | args_pointers = exec_info->args_pointers; |
---|
[408] | 1435 | |
---|
[438] | 1436 | #if DEBUG_PROCESS_MAKE_EXEC |
---|
[433] | 1437 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1438 | if( DEBUG_PROCESS_MAKE_EXEC < cycle ) |
---|
[593] | 1439 | printk("\n[%s] thread[%x,%x] enters for %s / cycle %d\n", |
---|
[583] | 1440 | __FUNCTION__, pid, thread->trdid, path, cycle ); |
---|
[433] | 1441 | #endif |
---|
[408] | 1442 | |
---|
[457] | 1443 | // open the file identified by <path> |
---|
| 1444 | file_xp = XPTR_NULL; |
---|
[564] | 1445 | file_id = 0xFFFFFFFF; |
---|
[610] | 1446 | error = vfs_open( process->vfs_root_xp, |
---|
[457] | 1447 | path, |
---|
[610] | 1448 | ref_xp, |
---|
[457] | 1449 | O_RDONLY, |
---|
| 1450 | 0, |
---|
| 1451 | &file_xp, |
---|
| 1452 | &file_id ); |
---|
| 1453 | if( error ) |
---|
| 1454 | { |
---|
| 1455 | printk("\n[ERROR] in %s : failed to open file <%s>\n", __FUNCTION__ , path ); |
---|
| 1456 | return -1; |
---|
| 1457 | } |
---|
| 1458 | |
---|
[446] | 1459 | #if (DEBUG_PROCESS_MAKE_EXEC & 1) |
---|
[469] | 1460 | cycle = (uint32_t)hal_get_cycles(); |
---|
[446] | 1461 | if( DEBUG_PROCESS_MAKE_EXEC < cycle ) |
---|
[593] | 1462 | printk("\n[%s] thread[%x,%x] opened file <%s> / cycle %d\n", |
---|
[583] | 1463 | __FUNCTION__, pid, thread->trdid, path, cycle ); |
---|
[446] | 1464 | #endif |
---|
| 1465 | |
---|
[457] | 1466 | // delete all threads other than this main thread in all clusters |
---|
| 1467 | process_sigaction( pid , DELETE_ALL_THREADS ); |
---|
[446] | 1468 | |
---|
[469] | 1469 | #if (DEBUG_PROCESS_MAKE_EXEC & 1) |
---|
| 1470 | cycle = (uint32_t)hal_get_cycles(); |
---|
| 1471 | if( DEBUG_PROCESS_MAKE_EXEC < cycle ) |
---|
[593] | 1472 | printk("\n[%s] thread[%x,%x] deleted all threads / cycle %d\n", |
---|
[583] | 1473 | __FUNCTION__, pid, thread->trdid, cycle ); |
---|
[469] | 1474 | #endif |
---|
| 1475 | |
---|
[457] | 1476 | // reset local process VMM |
---|
| 1477 | vmm_destroy( process ); |
---|
[446] | 1478 | |
---|
[457] | 1479 | #if( DEBUG_PROCESS_MAKE_EXEC & 1 ) |
---|
| 1480 | cycle = (uint32_t)hal_get_cycles(); |
---|
| 1481 | if( DEBUG_PROCESS_MAKE_EXEC < cycle ) |
---|
[593] | 1482 | printk("\n[%s] thread[%x,%x] reset VMM / cycle %d\n", |
---|
[583] | 1483 | __FUNCTION__, pid, thread->trdid, cycle ); |
---|
[457] | 1484 | #endif |
---|
[408] | 1485 | |
---|
[457] | 1486 | // re-initialize the VMM (kentry/args/envs vsegs registration) |
---|
| 1487 | error = vmm_init( process ); |
---|
| 1488 | if( error ) |
---|
[416] | 1489 | { |
---|
[457] | 1490 | printk("\n[ERROR] in %s : cannot initialise VMM for %s\n", __FUNCTION__ , path ); |
---|
| 1491 | vfs_close( file_xp , file_id ); |
---|
[623] | 1492 | // FIXME restore old process VMM [AG] |
---|
[416] | 1493 | return -1; |
---|
| 1494 | } |
---|
[457] | 1495 | |
---|
[438] | 1496 | #if( DEBUG_PROCESS_MAKE_EXEC & 1 ) |
---|
[433] | 1497 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1498 | if( DEBUG_PROCESS_MAKE_EXEC < cycle ) |
---|
[593] | 1499 | printk("\n[%s] thread[%x,%x] / kentry/args/envs vsegs registered / cycle %d\n", |
---|
[583] | 1500 | __FUNCTION__, pid, thread->trdid, cycle ); |
---|
[433] | 1501 | #endif |
---|
[428] | 1502 | |
---|
[457] | 1503 | // register code & data vsegs as well as entry-point in process VMM, |
---|
[428] | 1504 | // and register extended pointer on .elf file in process descriptor |
---|
[457] | 1505 | error = elf_load_process( file_xp , process ); |
---|
[441] | 1506 | if( error ) |
---|
[1] | 1507 | { |
---|
[441] | 1508 | printk("\n[ERROR] in %s : failed to access <%s>\n", __FUNCTION__ , path ); |
---|
[457] | 1509 | vfs_close( file_xp , file_id ); |
---|
[623] | 1510 | // FIXME restore old process VMM [AG] |
---|
[408] | 1511 | return -1; |
---|
[1] | 1512 | } |
---|
| 1513 | |
---|
[438] | 1514 | #if( DEBUG_PROCESS_MAKE_EXEC & 1 ) |
---|
[433] | 1515 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1516 | if( DEBUG_PROCESS_MAKE_EXEC < cycle ) |
---|
[593] | 1517 | printk("\n[%s] thread[%x,%x] / code/data vsegs registered / cycle %d\n", |
---|
[583] | 1518 | __FUNCTION__, pid, thread->trdid, cycle ); |
---|
[433] | 1519 | #endif |
---|
[1] | 1520 | |
---|
[457] | 1521 | // update the existing main thread descriptor... and jump to user code |
---|
| 1522 | error = thread_user_exec( (void *)process->vmm.entry_point, |
---|
| 1523 | args_nr, |
---|
| 1524 | args_pointers ); |
---|
| 1525 | if( error ) |
---|
| 1526 | { |
---|
[469] | 1527 | printk("\n[ERROR] in %s : cannot update main thread for %s\n", __FUNCTION__ , path ); |
---|
[457] | 1528 | vfs_close( file_xp , file_id ); |
---|
| 1529 | // FIXME restore old process VMM |
---|
[408] | 1530 | return -1; |
---|
[457] | 1531 | } |
---|
[1] | 1532 | |
---|
[492] | 1533 | assert( false, "we should not execute this code"); |
---|
[457] | 1534 | |
---|
[409] | 1535 | return 0; |
---|
| 1536 | |
---|
| 1537 | } // end process_make_exec() |
---|
| 1538 | |
---|
[457] | 1539 | |
---|
[623] | 1540 | //////////////////////////////////////////////// |
---|
| 1541 | void process_zero_create( process_t * process, |
---|
| 1542 | boot_info_t * info ) |
---|
[428] | 1543 | { |
---|
[580] | 1544 | error_t error; |
---|
| 1545 | pid_t pid; |
---|
[428] | 1546 | |
---|
[438] | 1547 | #if DEBUG_PROCESS_ZERO_CREATE |
---|
[433] | 1548 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1549 | if( DEBUG_PROCESS_ZERO_CREATE < cycle ) |
---|
[593] | 1550 | printk("\n[%s] enter / cluster %x / cycle %d\n", |
---|
[564] | 1551 | __FUNCTION__, local_cxy, cycle ); |
---|
[433] | 1552 | #endif |
---|
[428] | 1553 | |
---|
[624] | 1554 | // get pointer on VMM |
---|
| 1555 | vmm_t * vmm = &process->vmm; |
---|
| 1556 | |
---|
[580] | 1557 | // get PID from local cluster manager for this kernel process |
---|
| 1558 | error = cluster_pid_alloc( process , &pid ); |
---|
| 1559 | |
---|
| 1560 | if( error || (LPID_FROM_PID( pid ) != 0) ) |
---|
| 1561 | { |
---|
| 1562 | printk("\n[PANIC] in %s : cannot get valid PID in cluster %x / PID = %x\n", |
---|
| 1563 | __FUNCTION__ , local_cxy, pid ); |
---|
| 1564 | hal_core_sleep(); |
---|
| 1565 | } |
---|
| 1566 | |
---|
[428] | 1567 | // initialize PID, REF_XP, PARENT_XP, and STATE |
---|
[580] | 1568 | // the kernel process_zero is its own parent_process, |
---|
| 1569 | // reference_process, and owner_process, and cannot be killed... |
---|
| 1570 | process->pid = pid; |
---|
[433] | 1571 | process->ref_xp = XPTR( local_cxy , process ); |
---|
[443] | 1572 | process->owner_xp = XPTR( local_cxy , process ); |
---|
[580] | 1573 | process->parent_xp = XPTR( local_cxy , process ); |
---|
[433] | 1574 | process->term_state = 0; |
---|
[428] | 1575 | |
---|
[624] | 1576 | // initilise VSL as empty |
---|
| 1577 | vmm->vsegs_nr = 0; |
---|
| 1578 | xlist_root_init( XPTR( local_cxy , &vmm->vsegs_root ) ); |
---|
| 1579 | remote_rwlock_init( XPTR( local_cxy , &vmm->vsegs_lock ) , LOCK_VMM_VSL ); |
---|
[623] | 1580 | |
---|
[624] | 1581 | // initialise GPT as empty |
---|
| 1582 | error = hal_gpt_create( &vmm->gpt ); |
---|
| 1583 | |
---|
| 1584 | if( error ) |
---|
| 1585 | { |
---|
| 1586 | printk("\n[PANIC] in %s : cannot create empty GPT\n", __FUNCTION__ ); |
---|
| 1587 | hal_core_sleep(); |
---|
| 1588 | } |
---|
| 1589 | |
---|
| 1590 | // initialize GPT lock |
---|
| 1591 | remote_rwlock_init( XPTR( local_cxy , &vmm->gpt_lock ) , LOCK_VMM_GPT ); |
---|
| 1592 | |
---|
| 1593 | // create kernel vsegs in GPT and VSL, as required by the hardware architecture |
---|
| 1594 | error = hal_vmm_kernel_init( info ); |
---|
| 1595 | |
---|
| 1596 | if( error ) |
---|
| 1597 | { |
---|
| 1598 | printk("\n[PANIC] in %s : cannot create kernel vsegs in VMM\n", __FUNCTION__ ); |
---|
| 1599 | hal_core_sleep(); |
---|
| 1600 | } |
---|
| 1601 | |
---|
[564] | 1602 | // reset th_tbl[] array and associated fields |
---|
[428] | 1603 | uint32_t i; |
---|
[564] | 1604 | for( i = 0 ; i < CONFIG_THREADS_MAX_PER_CLUSTER ; i++ ) |
---|
[428] | 1605 | { |
---|
| 1606 | process->th_tbl[i] = NULL; |
---|
| 1607 | } |
---|
| 1608 | process->th_nr = 0; |
---|
[564] | 1609 | rwlock_init( &process->th_lock , LOCK_PROCESS_THTBL ); |
---|
[428] | 1610 | |
---|
[564] | 1611 | |
---|
[428] | 1612 | // reset children list as empty |
---|
| 1613 | xlist_root_init( XPTR( local_cxy , &process->children_root ) ); |
---|
| 1614 | process->children_nr = 0; |
---|
[564] | 1615 | remote_queuelock_init( XPTR( local_cxy , &process->children_lock ), |
---|
| 1616 | LOCK_PROCESS_CHILDREN ); |
---|
[428] | 1617 | |
---|
[580] | 1618 | // register kernel process in cluster manager local_list |
---|
| 1619 | cluster_process_local_link( process ); |
---|
| 1620 | |
---|
[428] | 1621 | hal_fence(); |
---|
| 1622 | |
---|
[438] | 1623 | #if DEBUG_PROCESS_ZERO_CREATE |
---|
[433] | 1624 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1625 | if( DEBUG_PROCESS_ZERO_CREATE < cycle ) |
---|
[593] | 1626 | printk("\n[%s] exit / cluster %x / cycle %d\n", |
---|
[564] | 1627 | __FUNCTION__, local_cxy, cycle ); |
---|
[433] | 1628 | #endif |
---|
[428] | 1629 | |
---|
[610] | 1630 | } // end process_zero_create() |
---|
[428] | 1631 | |
---|
[564] | 1632 | //////////////////////////////// |
---|
[485] | 1633 | void process_init_create( void ) |
---|
[1] | 1634 | { |
---|
[428] | 1635 | process_t * process; // local pointer on process descriptor |
---|
[409] | 1636 | pid_t pid; // process_init identifier |
---|
| 1637 | thread_t * thread; // local pointer on main thread |
---|
| 1638 | pthread_attr_t attr; // main thread attributes |
---|
| 1639 | lid_t lid; // selected core local index for main thread |
---|
[457] | 1640 | xptr_t file_xp; // extended pointer on .elf file descriptor |
---|
| 1641 | uint32_t file_id; // file index in fd_array |
---|
[409] | 1642 | error_t error; |
---|
[1] | 1643 | |
---|
[438] | 1644 | #if DEBUG_PROCESS_INIT_CREATE |
---|
[610] | 1645 | thread_t * this = CURRENT_THREAD; |
---|
[433] | 1646 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1647 | if( DEBUG_PROCESS_INIT_CREATE < cycle ) |
---|
[610] | 1648 | printk("\n[%s] thread[%x,%x] enter / cycle %d\n", |
---|
| 1649 | __FUNCTION__, this->process->pid, this->trdid, cycle ); |
---|
[433] | 1650 | #endif |
---|
[1] | 1651 | |
---|
[408] | 1652 | // allocates memory for process descriptor from local cluster |
---|
| 1653 | process = process_alloc(); |
---|
[457] | 1654 | |
---|
[564] | 1655 | // check memory allocator |
---|
| 1656 | assert( (process != NULL), |
---|
[624] | 1657 | "no memory for process descriptor in cluster %x", local_cxy ); |
---|
[101] | 1658 | |
---|
[610] | 1659 | // set the CWD and VFS_ROOT fields in process descriptor |
---|
| 1660 | process->cwd_xp = process_zero.vfs_root_xp; |
---|
| 1661 | process->vfs_root_xp = process_zero.vfs_root_xp; |
---|
| 1662 | |
---|
[409] | 1663 | // get PID from local cluster |
---|
[416] | 1664 | error = cluster_pid_alloc( process , &pid ); |
---|
[408] | 1665 | |
---|
[564] | 1666 | // check PID allocator |
---|
| 1667 | assert( (error == 0), |
---|
[624] | 1668 | "cannot allocate PID in cluster %x", local_cxy ); |
---|
[409] | 1669 | |
---|
[564] | 1670 | // check PID value |
---|
| 1671 | assert( (pid == 1) , |
---|
[624] | 1672 | "process INIT must be first process in cluster 0" ); |
---|
[457] | 1673 | |
---|
[409] | 1674 | // initialize process descriptor / parent is local process_zero |
---|
| 1675 | process_reference_init( process, |
---|
[408] | 1676 | pid, |
---|
[457] | 1677 | XPTR( local_cxy , &process_zero ) ); |
---|
[408] | 1678 | |
---|
[564] | 1679 | #if(DEBUG_PROCESS_INIT_CREATE & 1) |
---|
| 1680 | if( DEBUG_PROCESS_INIT_CREATE < cycle ) |
---|
[610] | 1681 | printk("\n[%s] thread[%x,%x] initialized process descriptor\n", |
---|
| 1682 | __FUNCTION__, this->process->pid, this->trdid ); |
---|
[564] | 1683 | #endif |
---|
| 1684 | |
---|
[457] | 1685 | // open the file identified by CONFIG_PROCESS_INIT_PATH |
---|
| 1686 | file_xp = XPTR_NULL; |
---|
| 1687 | file_id = -1; |
---|
[610] | 1688 | error = vfs_open( process->vfs_root_xp, |
---|
[457] | 1689 | CONFIG_PROCESS_INIT_PATH, |
---|
[610] | 1690 | XPTR( local_cxy , process ), |
---|
[457] | 1691 | O_RDONLY, |
---|
| 1692 | 0, |
---|
| 1693 | &file_xp, |
---|
| 1694 | &file_id ); |
---|
| 1695 | |
---|
[564] | 1696 | assert( (error == 0), |
---|
[624] | 1697 | "failed to open file <%s>", CONFIG_PROCESS_INIT_PATH ); |
---|
[457] | 1698 | |
---|
[564] | 1699 | #if(DEBUG_PROCESS_INIT_CREATE & 1) |
---|
| 1700 | if( DEBUG_PROCESS_INIT_CREATE < cycle ) |
---|
[610] | 1701 | printk("\n[%s] thread[%x,%x] open .elf file decriptor\n", |
---|
| 1702 | __FUNCTION__, this->process->pid, this->trdid ); |
---|
[564] | 1703 | #endif |
---|
| 1704 | |
---|
| 1705 | // register "code" and "data" vsegs as well as entry-point |
---|
[409] | 1706 | // in process VMM, using information contained in the elf file. |
---|
[457] | 1707 | error = elf_load_process( file_xp , process ); |
---|
[101] | 1708 | |
---|
[564] | 1709 | assert( (error == 0), |
---|
[624] | 1710 | "cannot access .elf file <%s>", CONFIG_PROCESS_INIT_PATH ); |
---|
[457] | 1711 | |
---|
[564] | 1712 | #if(DEBUG_PROCESS_INIT_CREATE & 1) |
---|
| 1713 | if( DEBUG_PROCESS_INIT_CREATE < cycle ) |
---|
[610] | 1714 | printk("\n[%s] thread[%x,%x] registered code/data vsegs in VMM\n", |
---|
| 1715 | __FUNCTION__, this->process->pid, this->trdid ); |
---|
[564] | 1716 | #endif |
---|
| 1717 | |
---|
[428] | 1718 | // get extended pointers on process_zero children_root, children_lock |
---|
| 1719 | xptr_t children_root_xp = XPTR( local_cxy , &process_zero.children_root ); |
---|
| 1720 | xptr_t children_lock_xp = XPTR( local_cxy , &process_zero.children_lock ); |
---|
| 1721 | |
---|
[564] | 1722 | // take lock protecting kernel process children list |
---|
| 1723 | remote_queuelock_acquire( children_lock_xp ); |
---|
| 1724 | |
---|
[428] | 1725 | // register process INIT in parent local process_zero |
---|
| 1726 | xlist_add_last( children_root_xp , XPTR( local_cxy , &process->children_list ) ); |
---|
| 1727 | hal_atomic_add( &process_zero.children_nr , 1 ); |
---|
| 1728 | |
---|
[564] | 1729 | // release lock protecting kernel process children list |
---|
| 1730 | remote_queuelock_release( children_lock_xp ); |
---|
| 1731 | |
---|
| 1732 | #if(DEBUG_PROCESS_INIT_CREATE & 1) |
---|
| 1733 | if( DEBUG_PROCESS_INIT_CREATE < cycle ) |
---|
[610] | 1734 | printk("\n[%s] thread[%x,%x] registered init process in parent\n", |
---|
| 1735 | __FUNCTION__, this->process->pid, this->trdid ); |
---|
[564] | 1736 | #endif |
---|
| 1737 | |
---|
[409] | 1738 | // select a core in local cluster to execute the main thread |
---|
| 1739 | lid = cluster_select_local_core(); |
---|
| 1740 | |
---|
| 1741 | // initialize pthread attributes for main thread |
---|
| 1742 | attr.attributes = PT_ATTR_DETACH | PT_ATTR_CLUSTER_DEFINED | PT_ATTR_CORE_DEFINED; |
---|
| 1743 | attr.cxy = local_cxy; |
---|
| 1744 | attr.lid = lid; |
---|
| 1745 | |
---|
| 1746 | // create and initialize thread descriptor |
---|
| 1747 | error = thread_user_create( pid, |
---|
| 1748 | (void *)process->vmm.entry_point, |
---|
| 1749 | NULL, |
---|
| 1750 | &attr, |
---|
| 1751 | &thread ); |
---|
[1] | 1752 | |
---|
[564] | 1753 | assert( (error == 0), |
---|
[624] | 1754 | "cannot create main thread for <%s>", CONFIG_PROCESS_INIT_PATH ); |
---|
[428] | 1755 | |
---|
[564] | 1756 | assert( (thread->trdid == 0), |
---|
[624] | 1757 | "main thread must have index 0 for <%s>", CONFIG_PROCESS_INIT_PATH ); |
---|
[457] | 1758 | |
---|
[564] | 1759 | #if(DEBUG_PROCESS_INIT_CREATE & 1) |
---|
| 1760 | if( DEBUG_PROCESS_INIT_CREATE < cycle ) |
---|
[610] | 1761 | printk("\n[%s] thread[%x,%x] created main thread\n", |
---|
| 1762 | __FUNCTION__, this->process->pid, this->trdid ); |
---|
[564] | 1763 | #endif |
---|
| 1764 | |
---|
[409] | 1765 | // activate thread |
---|
| 1766 | thread_unblock( XPTR( local_cxy , thread ) , THREAD_BLOCKED_GLOBAL ); |
---|
| 1767 | |
---|
[124] | 1768 | hal_fence(); |
---|
[1] | 1769 | |
---|
[438] | 1770 | #if DEBUG_PROCESS_INIT_CREATE |
---|
[433] | 1771 | cycle = (uint32_t)hal_get_cycles(); |
---|
[438] | 1772 | if( DEBUG_PROCESS_INIT_CREATE < cycle ) |
---|
[610] | 1773 | printk("\n[%s] thread[%x,%x] exit / cycle %d\n", |
---|
| 1774 | __FUNCTION__, this->process->pid, this->trdid, cycle ); |
---|
[433] | 1775 | #endif |
---|
[409] | 1776 | |
---|
[204] | 1777 | } // end process_init_create() |
---|
| 1778 | |
---|
[428] | 1779 | ///////////////////////////////////////// |
---|
| 1780 | void process_display( xptr_t process_xp ) |
---|
| 1781 | { |
---|
| 1782 | process_t * process_ptr; |
---|
| 1783 | cxy_t process_cxy; |
---|
[443] | 1784 | |
---|
[428] | 1785 | xptr_t parent_xp; // extended pointer on parent process |
---|
| 1786 | process_t * parent_ptr; |
---|
| 1787 | cxy_t parent_cxy; |
---|
| 1788 | |
---|
[443] | 1789 | xptr_t owner_xp; // extended pointer on owner process |
---|
| 1790 | process_t * owner_ptr; |
---|
| 1791 | cxy_t owner_cxy; |
---|
| 1792 | |
---|
[428] | 1793 | pid_t pid; |
---|
| 1794 | pid_t ppid; |
---|
[580] | 1795 | lpid_t lpid; |
---|
[428] | 1796 | uint32_t state; |
---|
| 1797 | uint32_t th_nr; |
---|
| 1798 | |
---|
[443] | 1799 | xptr_t txt_file_xp; // extended pointer on TXT_RX file descriptor |
---|
| 1800 | xptr_t txt_chdev_xp; // extended pointer on TXT_RX chdev |
---|
| 1801 | chdev_t * txt_chdev_ptr; |
---|
| 1802 | cxy_t txt_chdev_cxy; |
---|
| 1803 | xptr_t txt_owner_xp; // extended pointer on TXT owner process |
---|
[428] | 1804 | |
---|
| 1805 | xptr_t elf_file_xp; // extended pointer on .elf file |
---|
| 1806 | cxy_t elf_file_cxy; |
---|
| 1807 | vfs_file_t * elf_file_ptr; |
---|
| 1808 | vfs_inode_t * elf_inode_ptr; // local pointer on .elf inode |
---|
| 1809 | |
---|
| 1810 | char txt_name[CONFIG_VFS_MAX_NAME_LENGTH]; |
---|
| 1811 | char elf_name[CONFIG_VFS_MAX_NAME_LENGTH]; |
---|
| 1812 | |
---|
| 1813 | // get cluster and local pointer on process |
---|
| 1814 | process_ptr = GET_PTR( process_xp ); |
---|
| 1815 | process_cxy = GET_CXY( process_xp ); |
---|
| 1816 | |
---|
[580] | 1817 | // get process PID, LPID, and state |
---|
[564] | 1818 | pid = hal_remote_l32( XPTR( process_cxy , &process_ptr->pid ) ); |
---|
[580] | 1819 | lpid = LPID_FROM_PID( pid ); |
---|
[564] | 1820 | state = hal_remote_l32( XPTR( process_cxy , &process_ptr->term_state ) ); |
---|
[428] | 1821 | |
---|
[580] | 1822 | // get process PPID |
---|
[564] | 1823 | parent_xp = hal_remote_l64( XPTR( process_cxy , &process_ptr->parent_xp ) ); |
---|
[428] | 1824 | parent_cxy = GET_CXY( parent_xp ); |
---|
| 1825 | parent_ptr = GET_PTR( parent_xp ); |
---|
[564] | 1826 | ppid = hal_remote_l32( XPTR( parent_cxy , &parent_ptr->pid ) ); |
---|
[428] | 1827 | |
---|
| 1828 | // get number of threads |
---|
[564] | 1829 | th_nr = hal_remote_l32( XPTR( process_cxy , &process_ptr->th_nr ) ); |
---|
[428] | 1830 | |
---|
[443] | 1831 | // get pointers on owner process descriptor |
---|
[564] | 1832 | owner_xp = hal_remote_l64( XPTR( process_cxy , &process_ptr->owner_xp ) ); |
---|
[443] | 1833 | owner_cxy = GET_CXY( owner_xp ); |
---|
| 1834 | owner_ptr = GET_PTR( owner_xp ); |
---|
[428] | 1835 | |
---|
[580] | 1836 | // get process TXT name and .elf name |
---|
| 1837 | if( lpid ) // user process |
---|
| 1838 | { |
---|
[443] | 1839 | |
---|
[580] | 1840 | // get extended pointer on file descriptor associated to TXT_RX |
---|
| 1841 | txt_file_xp = hal_remote_l64( XPTR( owner_cxy , &owner_ptr->fd_array.array[0] ) ); |
---|
[428] | 1842 | |
---|
[580] | 1843 | assert( (txt_file_xp != XPTR_NULL) , |
---|
[624] | 1844 | "process must be attached to one TXT terminal" ); |
---|
[443] | 1845 | |
---|
[580] | 1846 | // get TXT_RX chdev pointers |
---|
| 1847 | txt_chdev_xp = chdev_from_file( txt_file_xp ); |
---|
| 1848 | txt_chdev_cxy = GET_CXY( txt_chdev_xp ); |
---|
| 1849 | txt_chdev_ptr = GET_PTR( txt_chdev_xp ); |
---|
| 1850 | |
---|
| 1851 | // get TXT_RX name and ownership |
---|
| 1852 | hal_remote_strcpy( XPTR( local_cxy , txt_name ) , |
---|
| 1853 | XPTR( txt_chdev_cxy , txt_chdev_ptr->name ) ); |
---|
[428] | 1854 | |
---|
[580] | 1855 | txt_owner_xp = (xptr_t)hal_remote_l64( XPTR( txt_chdev_cxy, |
---|
| 1856 | &txt_chdev_ptr->ext.txt.owner_xp ) ); |
---|
[428] | 1857 | |
---|
[580] | 1858 | // get process .elf name |
---|
| 1859 | elf_file_xp = hal_remote_l64( XPTR( process_cxy , &process_ptr->vfs_bin_xp ) ); |
---|
| 1860 | elf_file_cxy = GET_CXY( elf_file_xp ); |
---|
| 1861 | elf_file_ptr = GET_PTR( elf_file_xp ); |
---|
| 1862 | elf_inode_ptr = hal_remote_lpt( XPTR( elf_file_cxy , &elf_file_ptr->inode ) ); |
---|
| 1863 | vfs_inode_get_name( XPTR( elf_file_cxy , elf_inode_ptr ) , elf_name ); |
---|
| 1864 | } |
---|
| 1865 | else // kernel process_zero |
---|
| 1866 | { |
---|
| 1867 | // TXT name and .elf name are not registered in kernel process_zero |
---|
| 1868 | strcpy( txt_name , "txt0_rx" ); |
---|
| 1869 | txt_owner_xp = process_xp; |
---|
| 1870 | strcpy( elf_name , "kernel.elf" ); |
---|
| 1871 | } |
---|
| 1872 | |
---|
[428] | 1873 | // display process info |
---|
[443] | 1874 | if( txt_owner_xp == process_xp ) |
---|
[428] | 1875 | { |
---|
[581] | 1876 | nolock_printk("PID %X | %s (FG) | %X | PPID %X | TS %X | %d | %s\n", |
---|
| 1877 | pid, txt_name, process_ptr, ppid, state, th_nr, elf_name ); |
---|
[428] | 1878 | } |
---|
| 1879 | else |
---|
| 1880 | { |
---|
[581] | 1881 | nolock_printk("PID %X | %s (BG) | %X | PPID %X | TS %X | %d | %s\n", |
---|
| 1882 | pid, txt_name, process_ptr, ppid, state, th_nr, elf_name ); |
---|
[428] | 1883 | } |
---|
| 1884 | } // end process_display() |
---|
| 1885 | |
---|
| 1886 | |
---|
| 1887 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
| 1888 | // Terminals related functions |
---|
| 1889 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
| 1890 | |
---|
[581] | 1891 | ////////////////////////////////// |
---|
[485] | 1892 | uint32_t process_txt_alloc( void ) |
---|
[428] | 1893 | { |
---|
| 1894 | uint32_t index; // TXT terminal index |
---|
| 1895 | xptr_t chdev_xp; // extended pointer on TXT_RX chdev |
---|
| 1896 | chdev_t * chdev_ptr; // local pointer on TXT_RX chdev |
---|
| 1897 | cxy_t chdev_cxy; // TXT_RX chdev cluster |
---|
| 1898 | xptr_t root_xp; // extended pointer on owner field in chdev |
---|
| 1899 | |
---|
| 1900 | // scan the user TXT_RX chdevs (TXT0 is reserved for kernel) |
---|
| 1901 | for( index = 1 ; index < LOCAL_CLUSTER->nb_txt_channels ; index ++ ) |
---|
| 1902 | { |
---|
| 1903 | // get pointers on TXT_RX[index] |
---|
| 1904 | chdev_xp = chdev_dir.txt_rx[index]; |
---|
| 1905 | chdev_cxy = GET_CXY( chdev_xp ); |
---|
| 1906 | chdev_ptr = GET_PTR( chdev_xp ); |
---|
| 1907 | |
---|
| 1908 | // get extended pointer on root of attached process |
---|
| 1909 | root_xp = XPTR( chdev_cxy , &chdev_ptr->ext.txt.root ); |
---|
| 1910 | |
---|
| 1911 | // return free TXT index if found |
---|
| 1912 | if( xlist_is_empty( root_xp ) ) return index; |
---|
| 1913 | } |
---|
| 1914 | |
---|
[492] | 1915 | assert( false , "no free TXT terminal found" ); |
---|
[428] | 1916 | |
---|
| 1917 | return -1; |
---|
| 1918 | |
---|
| 1919 | } // end process_txt_alloc() |
---|
| 1920 | |
---|
| 1921 | ///////////////////////////////////////////// |
---|
| 1922 | void process_txt_attach( process_t * process, |
---|
| 1923 | uint32_t txt_id ) |
---|
| 1924 | { |
---|
| 1925 | xptr_t chdev_xp; // extended pointer on TXT_RX chdev |
---|
| 1926 | cxy_t chdev_cxy; // TXT_RX chdev cluster |
---|
| 1927 | chdev_t * chdev_ptr; // local pointer on TXT_RX chdev |
---|
| 1928 | xptr_t root_xp; // extended pointer on list root in chdev |
---|
| 1929 | xptr_t lock_xp; // extended pointer on list lock in chdev |
---|
| 1930 | |
---|
[564] | 1931 | // check process is in owner cluster |
---|
| 1932 | assert( (CXY_FROM_PID( process->pid ) == local_cxy) , |
---|
| 1933 | "process descriptor not in owner cluster" ); |
---|
[428] | 1934 | |
---|
[564] | 1935 | // check terminal index |
---|
| 1936 | assert( (txt_id < LOCAL_CLUSTER->nb_txt_channels) , |
---|
| 1937 | "illegal TXT terminal index" ); |
---|
[428] | 1938 | |
---|
| 1939 | // get pointers on TXT_RX[txt_id] chdev |
---|
| 1940 | chdev_xp = chdev_dir.txt_rx[txt_id]; |
---|
| 1941 | chdev_cxy = GET_CXY( chdev_xp ); |
---|
| 1942 | chdev_ptr = GET_PTR( chdev_xp ); |
---|
| 1943 | |
---|
| 1944 | // get extended pointer on root & lock of attached process list |
---|
| 1945 | root_xp = XPTR( chdev_cxy , &chdev_ptr->ext.txt.root ); |
---|
| 1946 | lock_xp = XPTR( chdev_cxy , &chdev_ptr->ext.txt.lock ); |
---|
| 1947 | |
---|
[564] | 1948 | // get lock protecting list of processes attached to TXT |
---|
| 1949 | remote_busylock_acquire( lock_xp ); |
---|
| 1950 | |
---|
[428] | 1951 | // insert process in attached process list |
---|
| 1952 | xlist_add_last( root_xp , XPTR( local_cxy , &process->txt_list ) ); |
---|
| 1953 | |
---|
[564] | 1954 | // release lock protecting list of processes attached to TXT |
---|
| 1955 | remote_busylock_release( lock_xp ); |
---|
| 1956 | |
---|
[446] | 1957 | #if DEBUG_PROCESS_TXT |
---|
[610] | 1958 | thread_t * this = CURRENT_THREAD; |
---|
[457] | 1959 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[446] | 1960 | if( DEBUG_PROCESS_TXT < cycle ) |
---|
[610] | 1961 | printk("\n[%s] thread[%x,%x] attached process %x to TXT %d / cycle %d\n", |
---|
| 1962 | __FUNCTION__, this->process->pid, this->trdid, process->pid, txt_id , cycle ); |
---|
[433] | 1963 | #endif |
---|
[428] | 1964 | |
---|
| 1965 | } // end process_txt_attach() |
---|
| 1966 | |
---|
[436] | 1967 | ///////////////////////////////////////////// |
---|
| 1968 | void process_txt_detach( xptr_t process_xp ) |
---|
[428] | 1969 | { |
---|
[436] | 1970 | process_t * process_ptr; // local pointer on process in owner cluster |
---|
| 1971 | cxy_t process_cxy; // process owner cluster |
---|
| 1972 | pid_t process_pid; // process identifier |
---|
| 1973 | xptr_t file_xp; // extended pointer on stdin file |
---|
[428] | 1974 | xptr_t chdev_xp; // extended pointer on TXT_RX chdev |
---|
| 1975 | cxy_t chdev_cxy; // TXT_RX chdev cluster |
---|
| 1976 | chdev_t * chdev_ptr; // local pointer on TXT_RX chdev |
---|
| 1977 | xptr_t lock_xp; // extended pointer on list lock in chdev |
---|
| 1978 | |
---|
[436] | 1979 | // get process cluster, local pointer, and PID |
---|
| 1980 | process_cxy = GET_CXY( process_xp ); |
---|
| 1981 | process_ptr = GET_PTR( process_xp ); |
---|
[564] | 1982 | process_pid = hal_remote_l32( XPTR( process_cxy , &process_ptr->pid ) ); |
---|
[436] | 1983 | |
---|
[564] | 1984 | // check process descriptor in owner cluster |
---|
| 1985 | assert( (CXY_FROM_PID( process_pid ) == process_cxy ) , |
---|
| 1986 | "process descriptor not in owner cluster" ); |
---|
[436] | 1987 | |
---|
| 1988 | // release TXT ownership (does nothing if not TXT owner) |
---|
| 1989 | process_txt_transfer_ownership( process_xp ); |
---|
[428] | 1990 | |
---|
[436] | 1991 | // get extended pointer on process stdin file |
---|
[564] | 1992 | file_xp = (xptr_t)hal_remote_l64( XPTR( process_cxy , &process_ptr->fd_array.array[0] ) ); |
---|
[436] | 1993 | |
---|
| 1994 | // get pointers on TXT_RX chdev |
---|
| 1995 | chdev_xp = chdev_from_file( file_xp ); |
---|
[428] | 1996 | chdev_cxy = GET_CXY( chdev_xp ); |
---|
| 1997 | chdev_ptr = (chdev_t *)GET_PTR( chdev_xp ); |
---|
| 1998 | |
---|
[436] | 1999 | // get extended pointer on lock protecting attached process list |
---|
[428] | 2000 | lock_xp = XPTR( chdev_cxy , &chdev_ptr->ext.txt.lock ); |
---|
| 2001 | |
---|
[564] | 2002 | // get lock protecting list of processes attached to TXT |
---|
| 2003 | remote_busylock_acquire( lock_xp ); |
---|
| 2004 | |
---|
[428] | 2005 | // unlink process from attached process list |
---|
[436] | 2006 | xlist_unlink( XPTR( process_cxy , &process_ptr->txt_list ) ); |
---|
| 2007 | |
---|
[564] | 2008 | // release lock protecting list of processes attached to TXT |
---|
| 2009 | remote_busylock_release( lock_xp ); |
---|
| 2010 | |
---|
[446] | 2011 | #if DEBUG_PROCESS_TXT |
---|
[610] | 2012 | thread_t * this = CURRENT_THREAD; |
---|
[457] | 2013 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[564] | 2014 | uint32_t txt_id = hal_remote_l32( XPTR( chdev_cxy , &chdev_ptr->channel ) ); |
---|
[446] | 2015 | if( DEBUG_PROCESS_TXT < cycle ) |
---|
[610] | 2016 | printk("\n[%s] thread[%x,%x] detached process %x from TXT %d / cycle %d\n", |
---|
| 2017 | __FUNCTION__, this->process->pid, this->trdid, process_pid, txt_id, cycle ); |
---|
[433] | 2018 | #endif |
---|
[428] | 2019 | |
---|
| 2020 | } // end process_txt_detach() |
---|
| 2021 | |
---|
| 2022 | /////////////////////////////////////////////////// |
---|
| 2023 | void process_txt_set_ownership( xptr_t process_xp ) |
---|
| 2024 | { |
---|
| 2025 | process_t * process_ptr; |
---|
| 2026 | cxy_t process_cxy; |
---|
[436] | 2027 | pid_t process_pid; |
---|
[428] | 2028 | xptr_t file_xp; |
---|
| 2029 | xptr_t txt_xp; |
---|
| 2030 | chdev_t * txt_ptr; |
---|
| 2031 | cxy_t txt_cxy; |
---|
| 2032 | |
---|
[436] | 2033 | // get pointers on process in owner cluster |
---|
[428] | 2034 | process_cxy = GET_CXY( process_xp ); |
---|
[435] | 2035 | process_ptr = GET_PTR( process_xp ); |
---|
[564] | 2036 | process_pid = hal_remote_l32( XPTR( process_cxy , &process_ptr->pid ) ); |
---|
[436] | 2037 | |
---|
| 2038 | // check owner cluster |
---|
[492] | 2039 | assert( (process_cxy == CXY_FROM_PID( process_pid )) , |
---|
[624] | 2040 | "process descriptor not in owner cluster" ); |
---|
[436] | 2041 | |
---|
[428] | 2042 | // get extended pointer on stdin pseudo file |
---|
[564] | 2043 | file_xp = hal_remote_l64( XPTR( process_cxy , &process_ptr->fd_array.array[0] ) ); |
---|
[428] | 2044 | |
---|
| 2045 | // get pointers on TXT chdev |
---|
| 2046 | txt_xp = chdev_from_file( file_xp ); |
---|
| 2047 | txt_cxy = GET_CXY( txt_xp ); |
---|
[435] | 2048 | txt_ptr = GET_PTR( txt_xp ); |
---|
[428] | 2049 | |
---|
| 2050 | // set owner field in TXT chdev |
---|
[564] | 2051 | hal_remote_s64( XPTR( txt_cxy , &txt_ptr->ext.txt.owner_xp ) , process_xp ); |
---|
[428] | 2052 | |
---|
[446] | 2053 | #if DEBUG_PROCESS_TXT |
---|
[610] | 2054 | thread_t * this = CURRENT_THREAD; |
---|
[457] | 2055 | uint32_t cycle = (uint32_t)hal_get_cycles(); |
---|
[564] | 2056 | uint32_t txt_id = hal_remote_l32( XPTR( txt_cxy , &txt_ptr->channel ) ); |
---|
[446] | 2057 | if( DEBUG_PROCESS_TXT < cycle ) |
---|
[610] | 2058 | printk("\n[%s] thread[%x,%x] give TXT %d to process %x / cycle %d\n", |
---|
| 2059 | __FUNCTION__, this->process->pid, this->trdid, txt_id, process_pid, cycle ); |
---|
[436] | 2060 | #endif |
---|
| 2061 | |
---|
[428] | 2062 | } // end process_txt_set ownership() |
---|
| 2063 | |
---|
[436] | 2064 | //////////////////////////////////////////////////////// |
---|
| 2065 | void process_txt_transfer_ownership( xptr_t process_xp ) |
---|
[428] | 2066 | { |
---|
[436] | 2067 | process_t * process_ptr; // local pointer on process releasing ownership |
---|
| 2068 | cxy_t process_cxy; // process cluster |
---|
| 2069 | pid_t process_pid; // process identifier |
---|
[428] | 2070 | xptr_t file_xp; // extended pointer on TXT_RX pseudo file |
---|
| 2071 | xptr_t txt_xp; // extended pointer on TXT_RX chdev |
---|
[433] | 2072 | chdev_t * txt_ptr; // local pointer on TXT_RX chdev |
---|
| 2073 | cxy_t txt_cxy; // cluster of TXT_RX chdev |
---|
| 2074 | uint32_t txt_id; // TXT_RX channel |
---|
[428] | 2075 | xptr_t owner_xp; // extended pointer on current TXT_RX owner |
---|
| 2076 | xptr_t root_xp; // extended pointer on root of attached process list |
---|
[436] | 2077 | xptr_t lock_xp; // extended pointer on lock protecting attached process list |
---|
[428] | 2078 | xptr_t iter_xp; // iterator for xlist |
---|
| 2079 | xptr_t current_xp; // extended pointer on current process |
---|
[433] | 2080 | process_t * current_ptr; // local pointer on current process |
---|
| 2081 | cxy_t current_cxy; // cluster for current process |
---|
[428] | 2082 | |
---|
[457] | 2083 | #if DEBUG_PROCESS_TXT |
---|
[610] | 2084 | thread_t * this = CURRENT_THREAD; |
---|
| 2085 | uint32_t cycle; |
---|
[457] | 2086 | #endif |
---|
| 2087 | |
---|
[436] | 2088 | // get pointers on process in owner cluster |
---|
[428] | 2089 | process_cxy = GET_CXY( process_xp ); |
---|
[435] | 2090 | process_ptr = GET_PTR( process_xp ); |
---|
[564] | 2091 | process_pid = hal_remote_l32( XPTR( process_cxy , &process_ptr->pid ) ); |
---|
[436] | 2092 | |
---|
| 2093 | // check owner cluster |
---|
[492] | 2094 | assert( (process_cxy == CXY_FROM_PID( process_pid )) , |
---|
[624] | 2095 | "process descriptor not in owner cluster" ); |
---|
[436] | 2096 | |
---|
[428] | 2097 | // get extended pointer on stdin pseudo file |
---|
[564] | 2098 | file_xp = hal_remote_l64( XPTR( process_cxy , &process_ptr->fd_array.array[0] ) ); |
---|
[428] | 2099 | |
---|
| 2100 | // get pointers on TXT chdev |
---|
| 2101 | txt_xp = chdev_from_file( file_xp ); |
---|
| 2102 | txt_cxy = GET_CXY( txt_xp ); |
---|
[433] | 2103 | txt_ptr = GET_PTR( txt_xp ); |
---|
[428] | 2104 | |
---|
[433] | 2105 | // get extended pointer on TXT_RX owner and TXT channel |
---|
[564] | 2106 | owner_xp = hal_remote_l64( XPTR( txt_cxy , &txt_ptr->ext.txt.owner_xp ) ); |
---|
| 2107 | txt_id = hal_remote_l32 ( XPTR( txt_cxy , &txt_ptr->channel ) ); |
---|
[428] | 2108 | |
---|
[436] | 2109 | // transfer ownership only if process is the TXT owner |
---|
| 2110 | if( (owner_xp == process_xp) && (txt_id > 0) ) |
---|
[428] | 2111 | { |
---|
[436] | 2112 | // get extended pointers on root and lock of attached processes list |
---|
| 2113 | root_xp = XPTR( txt_cxy , &txt_ptr->ext.txt.root ); |
---|
| 2114 | lock_xp = XPTR( txt_cxy , &txt_ptr->ext.txt.lock ); |
---|
[428] | 2115 | |
---|
[436] | 2116 | // get lock |
---|
[564] | 2117 | remote_busylock_acquire( lock_xp ); |
---|
[436] | 2118 | |
---|
| 2119 | if( process_get_ppid( process_xp ) != 1 ) // process is not KSH |
---|
[428] | 2120 | { |
---|
[436] | 2121 | // scan attached process list to find KSH process |
---|
| 2122 | XLIST_FOREACH( root_xp , iter_xp ) |
---|
| 2123 | { |
---|
| 2124 | current_xp = XLIST_ELEMENT( iter_xp , process_t , txt_list ); |
---|
| 2125 | current_cxy = GET_CXY( current_xp ); |
---|
| 2126 | current_ptr = GET_PTR( current_xp ); |
---|
[435] | 2127 | |
---|
[436] | 2128 | if( process_get_ppid( current_xp ) == 1 ) // current is KSH |
---|
| 2129 | { |
---|
| 2130 | // release lock |
---|
[564] | 2131 | remote_busylock_release( lock_xp ); |
---|
[436] | 2132 | |
---|
| 2133 | // set owner field in TXT chdev |
---|
[564] | 2134 | hal_remote_s64( XPTR( txt_cxy , &txt_ptr->ext.txt.owner_xp ) , current_xp ); |
---|
[436] | 2135 | |
---|
[446] | 2136 | #if DEBUG_PROCESS_TXT |
---|
[610] | 2137 | cycle = (uint32_t)hal_get_cycles(); |
---|
[564] | 2138 | uint32_t ksh_pid = hal_remote_l32( XPTR( current_cxy , ¤t_ptr->pid ) ); |
---|
[446] | 2139 | if( DEBUG_PROCESS_TXT < cycle ) |
---|
[610] | 2140 | printk("\n[%s] thread[%x,%x] release TXT %d to KSH %x / cycle %d\n", |
---|
| 2141 | __FUNCTION__, this->process->pid, this->trdid, txt_id, ksh_pid, cycle ); |
---|
[457] | 2142 | process_txt_display( txt_id ); |
---|
[436] | 2143 | #endif |
---|
| 2144 | return; |
---|
| 2145 | } |
---|
| 2146 | } |
---|
| 2147 | |
---|
| 2148 | // release lock |
---|
[564] | 2149 | remote_busylock_release( lock_xp ); |
---|
[436] | 2150 | |
---|
| 2151 | // PANIC if KSH not found |
---|
[492] | 2152 | assert( false , "KSH process not found for TXT %d" ); |
---|
[436] | 2153 | |
---|
| 2154 | return; |
---|
| 2155 | } |
---|
| 2156 | else // process is KSH |
---|
| 2157 | { |
---|
| 2158 | // scan attached process list to find another process |
---|
| 2159 | XLIST_FOREACH( root_xp , iter_xp ) |
---|
[428] | 2160 | { |
---|
[436] | 2161 | current_xp = XLIST_ELEMENT( iter_xp , process_t , txt_list ); |
---|
| 2162 | current_cxy = GET_CXY( current_xp ); |
---|
| 2163 | current_ptr = GET_PTR( current_xp ); |
---|
| 2164 | |
---|
| 2165 | if( current_xp != process_xp ) // current is not KSH |
---|
| 2166 | { |
---|
| 2167 | // release lock |
---|
[564] | 2168 | remote_busylock_release( lock_xp ); |
---|
[436] | 2169 | |
---|
| 2170 | // set owner field in TXT chdev |
---|
[564] | 2171 | hal_remote_s64( XPTR( txt_cxy , &txt_ptr->ext.txt.owner_xp ) , current_xp ); |
---|
[436] | 2172 | |
---|
[446] | 2173 | #if DEBUG_PROCESS_TXT |
---|
[610] | 2174 | cycle = (uint32_t)hal_get_cycles(); |
---|
[564] | 2175 | uint32_t new_pid = hal_remote_l32( XPTR( current_cxy , ¤t_ptr->pid ) ); |
---|
[446] | 2176 | if( DEBUG_PROCESS_TXT < cycle ) |
---|
[610] | 2177 | printk("\n[%s] thread[%x,%x] release TXT %d to process %x / cycle %d\n", |
---|
| 2178 | __FUNCTION__,this->process->pid, this->trdid, txt_id, new_pid, cycle ); |
---|
[457] | 2179 | process_txt_display( txt_id ); |
---|
[436] | 2180 | #endif |
---|
| 2181 | return; |
---|
| 2182 | } |
---|
[428] | 2183 | } |
---|
[436] | 2184 | |
---|
| 2185 | // release lock |
---|
[564] | 2186 | remote_busylock_release( lock_xp ); |
---|
[436] | 2187 | |
---|
| 2188 | // no more owner for TXT if no other process found |
---|
[564] | 2189 | hal_remote_s64( XPTR( txt_cxy , &txt_ptr->ext.txt.owner_xp ) , XPTR_NULL ); |
---|
[436] | 2190 | |
---|
[446] | 2191 | #if DEBUG_PROCESS_TXT |
---|
[436] | 2192 | cycle = (uint32_t)hal_get_cycles(); |
---|
[446] | 2193 | if( DEBUG_PROCESS_TXT < cycle ) |
---|
[610] | 2194 | printk("\n[%s] thread[%x,%x] release TXT %d to nobody / cycle %d\n", |
---|
| 2195 | __FUNCTION__, this->process->pid, this->trdid, txt_id, cycle ); |
---|
[457] | 2196 | process_txt_display( txt_id ); |
---|
[436] | 2197 | #endif |
---|
| 2198 | return; |
---|
[428] | 2199 | } |
---|
[436] | 2200 | } |
---|
| 2201 | else |
---|
| 2202 | { |
---|
[433] | 2203 | |
---|
[446] | 2204 | #if DEBUG_PROCESS_TXT |
---|
[436] | 2205 | cycle = (uint32_t)hal_get_cycles(); |
---|
[446] | 2206 | if( DEBUG_PROCESS_TXT < cycle ) |
---|
[593] | 2207 | printk("\n[%s] thread %x in process %d does nothing (not TXT owner) / cycle %d\n", |
---|
[610] | 2208 | __FUNCTION__, this->trdid, process_pid, cycle ); |
---|
[457] | 2209 | process_txt_display( txt_id ); |
---|
[436] | 2210 | #endif |
---|
| 2211 | |
---|
[428] | 2212 | } |
---|
[436] | 2213 | } // end process_txt_transfer_ownership() |
---|
[428] | 2214 | |
---|
| 2215 | |
---|
[564] | 2216 | //////////////////////////////////////////////// |
---|
| 2217 | bool_t process_txt_is_owner( xptr_t process_xp ) |
---|
[457] | 2218 | { |
---|
| 2219 | // get local pointer and cluster of process in owner cluster |
---|
| 2220 | cxy_t process_cxy = GET_CXY( process_xp ); |
---|
| 2221 | process_t * process_ptr = GET_PTR( process_xp ); |
---|
| 2222 | |
---|
[564] | 2223 | // check calling thread execute in target process owner cluster |
---|
| 2224 | pid_t process_pid = hal_remote_l32( XPTR( process_cxy , &process_ptr->pid ) ); |
---|
| 2225 | assert( (process_cxy == CXY_FROM_PID( process_pid )) , |
---|
[624] | 2226 | "process descriptor not in owner cluster" ); |
---|
[457] | 2227 | |
---|
| 2228 | // get extended pointer on stdin pseudo file |
---|
[564] | 2229 | xptr_t file_xp = hal_remote_l64( XPTR( process_cxy , &process_ptr->fd_array.array[0] ) ); |
---|
[457] | 2230 | |
---|
| 2231 | // get pointers on TXT chdev |
---|
| 2232 | xptr_t txt_xp = chdev_from_file( file_xp ); |
---|
| 2233 | cxy_t txt_cxy = GET_CXY( txt_xp ); |
---|
| 2234 | chdev_t * txt_ptr = GET_PTR( txt_xp ); |
---|
| 2235 | |
---|
| 2236 | // get extended pointer on TXT_RX owner process |
---|
[564] | 2237 | xptr_t owner_xp = hal_remote_l64( XPTR( txt_cxy , &txt_ptr->ext.txt.owner_xp ) ); |
---|
[457] | 2238 | |
---|
| 2239 | return (process_xp == owner_xp); |
---|
| 2240 | |
---|
| 2241 | } // end process_txt_is_owner() |
---|
| 2242 | |
---|
[436] | 2243 | //////////////////////////////////////////////// |
---|
| 2244 | xptr_t process_txt_get_owner( uint32_t channel ) |
---|
[435] | 2245 | { |
---|
| 2246 | xptr_t txt_rx_xp = chdev_dir.txt_rx[channel]; |
---|
| 2247 | cxy_t txt_rx_cxy = GET_CXY( txt_rx_xp ); |
---|
| 2248 | chdev_t * txt_rx_ptr = GET_PTR( txt_rx_xp ); |
---|
| 2249 | |
---|
[564] | 2250 | return (xptr_t)hal_remote_l64( XPTR( txt_rx_cxy , &txt_rx_ptr->ext.txt.owner_xp ) ); |
---|
[435] | 2251 | |
---|
[457] | 2252 | } // end process_txt_get_owner() |
---|
| 2253 | |
---|
[435] | 2254 | /////////////////////////////////////////// |
---|
| 2255 | void process_txt_display( uint32_t txt_id ) |
---|
| 2256 | { |
---|
| 2257 | xptr_t chdev_xp; |
---|
| 2258 | cxy_t chdev_cxy; |
---|
| 2259 | chdev_t * chdev_ptr; |
---|
| 2260 | xptr_t root_xp; |
---|
| 2261 | xptr_t lock_xp; |
---|
| 2262 | xptr_t current_xp; |
---|
| 2263 | xptr_t iter_xp; |
---|
[443] | 2264 | cxy_t txt0_cxy; |
---|
| 2265 | chdev_t * txt0_ptr; |
---|
| 2266 | xptr_t txt0_xp; |
---|
| 2267 | xptr_t txt0_lock_xp; |
---|
| 2268 | |
---|
[435] | 2269 | assert( (txt_id < LOCAL_CLUSTER->nb_txt_channels) , |
---|
[492] | 2270 | "illegal TXT terminal index" ); |
---|
[435] | 2271 | |
---|
[443] | 2272 | // get pointers on TXT0 chdev |
---|
| 2273 | txt0_xp = chdev_dir.txt_tx[0]; |
---|
| 2274 | txt0_cxy = GET_CXY( txt0_xp ); |
---|
| 2275 | txt0_ptr = GET_PTR( txt0_xp ); |
---|
| 2276 | |
---|
| 2277 | // get extended pointer on TXT0 lock |
---|
| 2278 | txt0_lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock ); |
---|
| 2279 | |
---|
[435] | 2280 | // get pointers on TXT_RX[txt_id] chdev |
---|
| 2281 | chdev_xp = chdev_dir.txt_rx[txt_id]; |
---|
| 2282 | chdev_cxy = GET_CXY( chdev_xp ); |
---|
| 2283 | chdev_ptr = GET_PTR( chdev_xp ); |
---|
| 2284 | |
---|
| 2285 | // get extended pointer on root & lock of attached process list |
---|
| 2286 | root_xp = XPTR( chdev_cxy , &chdev_ptr->ext.txt.root ); |
---|
| 2287 | lock_xp = XPTR( chdev_cxy , &chdev_ptr->ext.txt.lock ); |
---|
| 2288 | |
---|
[443] | 2289 | // get lock on attached process list |
---|
[564] | 2290 | remote_busylock_acquire( lock_xp ); |
---|
[443] | 2291 | |
---|
| 2292 | // get TXT0 lock in busy waiting mode |
---|
[564] | 2293 | remote_busylock_acquire( txt0_lock_xp ); |
---|
[443] | 2294 | |
---|
[435] | 2295 | // display header |
---|
[443] | 2296 | nolock_printk("\n***** processes attached to TXT_%d / cycle %d\n", |
---|
| 2297 | txt_id , (uint32_t)hal_get_cycles() ); |
---|
[435] | 2298 | |
---|
[436] | 2299 | // scan attached process list |
---|
[435] | 2300 | XLIST_FOREACH( root_xp , iter_xp ) |
---|
| 2301 | { |
---|
| 2302 | current_xp = XLIST_ELEMENT( iter_xp , process_t , txt_list ); |
---|
| 2303 | process_display( current_xp ); |
---|
| 2304 | } |
---|
| 2305 | |
---|
[443] | 2306 | // release TXT0 lock in busy waiting mode |
---|
[564] | 2307 | remote_busylock_release( txt0_lock_xp ); |
---|
[443] | 2308 | |
---|
| 2309 | // release lock on attached process list |
---|
[564] | 2310 | remote_busylock_release( lock_xp ); |
---|
[435] | 2311 | |
---|
| 2312 | } // end process_txt_display |
---|