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55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2010-2020 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <pthread.h>
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#include <assert.h>
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#include <signal.h>
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#include <asm/unistd.h>
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#include <unistd.h>
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#define tgkill(tgid, tid, sig) syscall (__NR_tgkill, (tgid), (tid), (sig))
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#define gettid() syscall (__NR_gettid)
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static volatile int var;
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static void
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handler (int signo) /* step-0 */
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{ /* step-0 */
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var++; /* step-1 */
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tgkill (getpid (), gettid (), SIGUSR1); /* step-2 */
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}
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static void *
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start (void *arg)
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{
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tgkill (getpid (), gettid (), SIGUSR1);
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assert (0);
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return NULL;
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}
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int
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main (void)
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{
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pthread_t thread;
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signal (SIGUSR1, handler);
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pthread_create (&thread, NULL, start, NULL);
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start (NULL); /* main-start */
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return 0;
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}
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