| [410] | 1 | /* |
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| [416] | 2 | * sys_exit.c - Kernel function implementing the "exit" system call. |
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| [410] | 3 | * |
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| 4 | * Author Alain Greiner (2016,2017) |
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| 5 | * |
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| 6 | * Copyright (c) UPMC Sorbonne Universites |
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| 7 | * |
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| 8 | * This file is part of ALMOS-MKH. |
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| 9 | * |
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| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it |
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| 11 | * under the terms of the GNU General Public License as published by |
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| 12 | * the Free Software Foundation; version 2.0 of the License. |
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| 13 | * |
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| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 17 | * General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 22 | */ |
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| 23 | |
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| 24 | #include <kernel_config.h> |
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| 25 | #include <hal_types.h> |
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| 26 | #include <hal_irqmask.h> |
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| 27 | #include <errno.h> |
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| 28 | #include <thread.h> |
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| 29 | #include <printk.h> |
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| 30 | #include <process.h> |
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| 31 | #include <signal.h> |
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| 32 | #include <cluster.h> |
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| 33 | #include <rpc.h> |
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| 34 | |
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| 35 | /////////////////////////////// |
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| 36 | int sys_exit( uint32_t status ) |
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| 37 | { |
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| 38 | uint32_t save_sr; // required to enable IRQs |
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| 39 | |
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| [416] | 40 | thread_t * this = CURRENT_THREAD; |
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| 41 | pid_t pid = this->process->pid; |
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| 42 | |
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| [410] | 43 | #if CONFIG_SYSCALL_DEBUG |
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| 44 | uint64_t tm_start; |
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| 45 | uint64_t tm_end; |
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| 46 | tm_start = hal_get_cycles(); |
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| [416] | 47 | printk("\n[DBG] %s : core[%x,%d] enter / process %x / status %x / cycle %d\n", |
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| 48 | __FUNCTION__ , local_cxy , this->core->lid , pid , status , (uint32_t)tm_start ); |
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| [410] | 49 | #endif |
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| 50 | |
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| 51 | // get owner process cluster |
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| [416] | 52 | cxy_t owner_cxy = CXY_FROM_PID( pid ); |
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| [410] | 53 | |
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| 54 | // enable IRQs |
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| 55 | hal_enable_irq( &save_sr ); |
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| 56 | |
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| 57 | // execute process_make_exit() function in owner cluster |
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| 58 | if( local_cxy == owner_cxy ) // owner is local |
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| 59 | { |
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| [416] | 60 | process_make_exit( pid , status ); |
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| [410] | 61 | } |
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| 62 | else // owner is remote |
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| 63 | { |
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| [416] | 64 | rpc_process_make_exit_client( owner_cxy, pid , status ); |
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| [410] | 65 | } |
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| 66 | |
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| 67 | // restore IRQs |
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| 68 | hal_restore_irq( save_sr ); |
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| 69 | |
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| 70 | hal_fence(); |
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| 71 | |
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| 72 | #if CONFIG_SYSCALL_DEBUG |
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| 73 | tm_end = hal_get_cycles(); |
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| [416] | 74 | printk("\n[DBG] %s : core[%x,%d] exit / process %x / status %x / cost = %d\n", |
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| 75 | __FUNCTION__ , local_cxy , this->core->lid , pid , status , (uint32_t)(tm_end - tm_start) ); |
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| [410] | 76 | #endif |
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| 77 | |
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| 78 | return 0; |
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| 79 | |
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| 80 | } // end sys_exit() |
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| 81 | |
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