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/* This testcase is part of GDB, the GNU debugger.
Copyright 2015-2021 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <assert.h>
#include <pthread.h>
#include <unistd.h>
#include <setjmp.h>
/* Number of threads. */
#define NTHREADS 10
/* When set, threads exit. */
volatile int break_out;
pthread_barrier_t barrier;
/* Entry point for threads that setjmp/longjmp. */
static void *
thread_longjmp (void *arg)
{
jmp_buf env;
pthread_barrier_wait (&barrier);
while (!break_out)
{
if (setjmp (env) == 0)
longjmp (env, 1);
usleep (1);
}
return NULL;
}
/* Entry point for threads that try/catch. */
static void *
thread_try_catch (void *arg)
{
volatile unsigned int counter = 0;
pthread_barrier_wait (&barrier);
while (!break_out)
{
try
{
throw 1;
}
catch (...)
{
counter++;
}
usleep (1);
}
return NULL;
}
int
main (void)
{
pthread_t threads[NTHREADS];
int i;
int ret;
/* Don't run forever. */
alarm (180);
pthread_barrier_init (&barrier, NULL, NTHREADS + 1);
for (i = 0; i < NTHREADS; i++)
{
/* Half of the threads does setjmp/longjmp, the other half does
try/catch. */
if ((i % 2) == 0)
ret = pthread_create (&threads[i], NULL, thread_longjmp , NULL);
else
ret = pthread_create (&threads[i], NULL, thread_try_catch , NULL);
assert (ret == 0);
}
/* Wait until all threads are running. */
pthread_barrier_wait (&barrier);
#define LINE usleep (1)
/* The other thread's setjmp/longjmp/try/catch should not disturb
this thread's stepping over these lines. */
LINE; /* set break here */
LINE; /* line 1 */
LINE; /* line 2 */
LINE; /* line 3 */
LINE; /* line 4 */
LINE; /* line 5 */
LINE; /* line 6 */
LINE; /* line 7 */
LINE; /* line 8 */
LINE; /* line 9 */
LINE; /* line 10 */
break_out = 1;
for (i = 0; i < NTHREADS; i++)
{
ret = pthread_join (threads[i], NULL);
assert (ret == 0);
}
return 0;
}
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