source: trunk/kernel/syscalls/sys_exit.c @ 410

Last change on this file since 410 was 410, checked in by alain, 4 years ago

Introduce new syscalls.

File size: 2.2 KB
Line 
1/*
2 * sys_exit.c: Terminate the calling process.
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///////////////////////////////
36int sys_exit( uint32_t status )
37{
38    uint32_t    save_sr;       // required to enable IRQs
39
40#if CONFIG_SYSCALL_DEBUG
41uint64_t    tm_start;
42uint64_t    tm_end;
43tm_start = hal_get_cycles();
44#endif
45
46    thread_t  * this    = CURRENT_THREAD;
47    process_t * process = this->process;
48
49    // get owner process cluster
50    cxy_t   owner_cxy  = CXY_FROM_PID( process->pid );
51
52    // enable IRQs
53    hal_enable_irq( &save_sr );
54
55    // execute process_make_exit() function in owner cluster
56    if( local_cxy == owner_cxy )                                // owner is local
57    {
58        process_make_exit( process , status );
59    }
60    else                                                        // owner is remote
61    {
62        rpc_process_make_exit_client( owner_cxy, process , status );
63    }
64
65    // restore IRQs
66    hal_restore_irq( save_sr );
67
68    hal_fence();
69
70#if CONFIG_SYSCALL_DEBUG
71tm_end = hal_get_cycles();
72syscall_dmsg("\n[DBG] %s exit : core[%x,%d] / thread %x in process %x / cycle %d\n"
73"process %x killed / cost = %d\n",
74__FUNCTION__ , local_cxy , this->core->lid , this->trdid , this->process->pid ,
75tm_start , pid , (uint32_t)(tm_end - tm_start) );
76#endif
77
78        return 0;
79
80}  // end sys_exit()
81
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