source: trunk/kernel/syscalls/sys_thread_cancel.c @ 438

Last change on this file since 438 was 438, checked in by alain, 4 years ago

Fix a bug in scheduler related to RPC blocking.

File size: 2.3 KB
Line 
1/*
2 * sys_thread_cancel.c - terminate execution of an user thread.
3 *
4 * Authors   Alain Greiner (2016,2017, 2018)
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 <hal_types.h>
25#include <hal_remote.h>
26#include <hal_special.h>
27#include <thread.h>
28#include <errno.h>
29#include <printk.h>
30
31//////////////////////////////////////
32int sys_thread_cancel( trdid_t trdid )
33{
34    xptr_t       target_xp;     // target thread extended pointer
35
36    // get killer thread pointers
37        thread_t   * this    = CURRENT_THREAD;
38    process_t  * process = this->process;
39
40    // get extended pointer on target thread
41        target_xp  = thread_get_xptr( process->pid , trdid );
42
43    // check target_xp
44    if( target_xp == XPTR_NULL )
45    {
46
47#if DEBUG_SYSCALLS_ERROR
48printk("\n[ERROR] in %s : target thread %x not found\n", __FUNCTION__, trdid );
49#endif
50        this->errno = EINVAL;
51        return -1;
52    }
53
54#if DEBUG_SYS_THREAD_CANCEL
55uint64_t     tm_start;
56uint64_t     tm_end;
57tm_start = hal_get_cycles();
58if( DEBUG_SYS_THREAD_CANCEL < tm_start )
59printk("\n[DBG] %s : thread %x enter to kill thread %x / cycle %d\n",
60__FUCTION__, this, GET_PTR( target_xp ), (uint32_t)tm_start );
61#endif
62
63    // cal the relevant kernel function
64    thread_kill( target_xp,
65                 0,           // is_exit
66                 0 );         // is forced
67
68#if DEBUG_SYS_THREAD_CANCEL
69tm_end = hal_get_cycles();
70if( DEBUG_SYS_THREAD_CANCEL < tm_end )
71printk("\n[DBG] %s : thread %x exit after kill thread %x / cycle %d\n",
72__FUCTION__, this, GET_PTR( target_xp ), (uint32_t)tm_end );
73#endif
74
75        return 0;
76
77}  // end sys_thread_cancel()
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