File: single-1.c

package info (click to toggle)
gcc-avr 1%3A5.4.0%2BAtmel3.6.2-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 589,872 kB
  • sloc: ansic: 2,775,581; ada: 756,757; cpp: 723,977; f90: 117,673; asm: 66,898; makefile: 62,755; xml: 44,466; sh: 29,549; exp: 23,315; objc: 15,216; fortran: 10,901; pascal: 4,185; python: 4,093; perl: 2,969; awk: 2,811; ml: 2,385; cs: 879; yacc: 316; lex: 198; haskell: 112; lisp: 8
file content (53 lines) | stat: -rw-r--r-- 947 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
 
/* Trivial test of single.  */

/* { 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 int test;

static void f_nocopy (void *dummy)
{
  if (GOMP_single_start ())
    {
      int iam = omp_get_thread_num ();
      int old = __sync_lock_test_and_set (&test, iam);
      assert (old == -1);
    }
}

static void f_copy (void *dummy)
{
  int *x = GOMP_single_copy_start ();
  if (x == NULL)
    {
      int iam = omp_get_thread_num ();
      int old = __sync_lock_test_and_set (&test, iam);
      assert (old == -1);
      GOMP_single_copy_end (&test);
    }
  else
    assert (x == &test);
}

int main()
{
  omp_set_dynamic (0);

  test = -1;
  GOMP_parallel_start (f_nocopy, NULL, 3);
  f_nocopy (NULL);
  GOMP_parallel_end ();

  test = -1;
  GOMP_parallel_start (f_copy, NULL, 3);
  f_copy (NULL);
  GOMP_parallel_end ();

  return 0;
}