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