| 1 | /* |
|---|
| 2 | * sys_exit.c - Kernel function implementing the "exit" system call. |
|---|
| 3 | * |
|---|
| 4 | * Author Alain Greiner (2016,2017) |
|---|
| 5 | * |
|---|
| 6 | * Copyright (c) UPMC Sorbonne Universites |
|---|
| 7 | * |
|---|
| 8 | * This file is part of ALMOS-MKH. |
|---|
| 9 | * |
|---|
| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
|---|
| 11 | * under the terms of the GNU General Public License as published by |
|---|
| 12 | * the Free Software Foundation; version 2.0 of the License. |
|---|
| 13 | * |
|---|
| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
|---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|---|
| 17 | * General Public License for more details. |
|---|
| 18 | * |
|---|
| 19 | * You should have received a copy of the GNU General Public License |
|---|
| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
|---|
| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
|---|
| 22 | */ |
|---|
| 23 | |
|---|
| 24 | #include <kernel_config.h> |
|---|
| 25 | #include <hal_types.h> |
|---|
| 26 | #include <hal_irqmask.h> |
|---|
| 27 | #include <errno.h> |
|---|
| 28 | #include <thread.h> |
|---|
| 29 | #include <printk.h> |
|---|
| 30 | #include <process.h> |
|---|
| 31 | #include <signal.h> |
|---|
| 32 | #include <cluster.h> |
|---|
| 33 | #include <rpc.h> |
|---|
| 34 | |
|---|
| 35 | /////////////////////////////// |
|---|
| 36 | int sys_exit( uint32_t status ) |
|---|
| 37 | { |
|---|
| 38 | reg_t save_sr; // required to enable IRQs |
|---|
| 39 | |
|---|
| 40 | thread_t * this = CURRENT_THREAD; |
|---|
| 41 | process_t * process = this->process; |
|---|
| 42 | pid_t pid = process->pid; |
|---|
| 43 | |
|---|
| 44 | #if CONFIG_DEBUG_SYS_EXIT |
|---|
| 45 | uint64_t tm_start; |
|---|
| 46 | uint64_t tm_end; |
|---|
| 47 | tm_start = hal_get_cycles(); |
|---|
| 48 | if( CONFIG_DEBUG_SYS_EXIT < tm_start ) |
|---|
| 49 | printk("\n[DBG] %s : thread %x enter / process %x / status %x / cycle %d\n", |
|---|
| 50 | __FUNCTION__ , this, pid , status , (uint32_t)tm_start ); |
|---|
| 51 | #endif |
|---|
| 52 | |
|---|
| 53 | // get cluster and pointers on process in owner cluster |
|---|
| 54 | xptr_t owner_xp = cluster_get_owner_process_from_pid( pid ); |
|---|
| 55 | cxy_t owner_cxy = GET_CXY( owner_xp ); |
|---|
| 56 | process_t * owner_ptr = GET_PTR( owner_xp ); |
|---|
| 57 | |
|---|
| 58 | assert( (owner_xp != XPTR_NULL) , __FUNCTION__ , "owner_xp cannot be NULL\n" ); |
|---|
| 59 | |
|---|
| 60 | // enable IRQs |
|---|
| 61 | hal_enable_irq( &save_sr ); |
|---|
| 62 | |
|---|
| 63 | // the process_make_kill() function must be executed |
|---|
| 64 | // by an RPC thread in reference cluster |
|---|
| 65 | rpc_process_make_kill_client( owner_cxy, owner_ptr, true , status ); |
|---|
| 66 | |
|---|
| 67 | // restore IRQs |
|---|
| 68 | hal_restore_irq( save_sr ); |
|---|
| 69 | |
|---|
| 70 | hal_fence(); |
|---|
| 71 | |
|---|
| 72 | #if CONFIG_DEBUG_SYS_EXIT |
|---|
| 73 | tm_end = hal_get_cycles(); |
|---|
| 74 | if( CONFIG_DEBUG_SYS_EXIT < tm_end ) |
|---|
| 75 | printk("\n[DBG] %s : thread %x exit / process %x / status %x / cost = %d / cycle %d\n", |
|---|
| 76 | __FUNCTION__, this, pid, status, (uint32_t)(tm_end - tm_start), (uint32_t)tm_end ); |
|---|
| 77 | #endif |
|---|
| 78 | |
|---|
| 79 | return 0; |
|---|
| 80 | |
|---|
| 81 | } // end sys_exit() |
|---|
| 82 | |
|---|
