gcc/libgomp/testsuite/libgomp.c/critical-1.c

40 lines
606 B
C

/* Trivial test of critical sections. */
/* { dg-require-effective-target sync_int_long } */
#include <omp.h>
#include <sys/time.h>
#include <unistd.h>
#include <assert.h>
#include "libgomp_g.h"
static volatile int test = -1;
static void function(void *dummy)
{
int iam = omp_get_thread_num ();
int old;
GOMP_critical_start ();
old = __sync_lock_test_and_set (&test, iam);
assert (old == -1);
usleep (10);
test = -1;
GOMP_critical_end ();
}
int main()
{
omp_set_dynamic (0);
GOMP_parallel_start (function, NULL, 3);
function (NULL);
GOMP_parallel_end ();
return 0;
}