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glibc  2.9
Defines | Functions | Variables
tst-barrier4.c File Reference
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include "../test-skeleton.c"

Go to the source code of this file.

Defines

#define N   20
#define TEST_FUNCTION   do_test ()

Functions

static void * tf (void *arg)
static int do_test (void)

Variables

static pthread_barrier_t b1
static pthread_barrier_t b2

Define Documentation

#define N   20

Definition at line 30 of file tst-barrier4.c.

#define TEST_FUNCTION   do_test ()

Definition at line 120 of file tst-barrier4.c.


Function Documentation

static int do_test ( void  ) [static]

Definition at line 65 of file tst-barrier4.c.

{
  pthread_attr_t at;
  int cnt;

  if (pthread_attr_init (&at) != 0)
    {
      puts ("attr_init failed");
      return 1;
    }

  if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0)
    {
      puts ("attr_setstacksize failed");
      return 1;
    }

  if (pthread_barrier_init (&b1, NULL, N) != 0)
    {
      puts ("1st barrier_init failed");
      return 1;
    }

  if (pthread_barrier_init (&b2, NULL, N) != 0)
    {
      puts ("2nd barrier_init failed");
      return 1;
    }

  pthread_t th[N - 1];
  for (cnt = 0; cnt < N - 1; ++cnt)
    if (pthread_create (&th[cnt], &at, tf, NULL) != 0)
      {
       puts ("pthread_create failed");
       return 1;
      }

  if (pthread_attr_destroy (&at) != 0)
    {
      puts ("attr_destroy failed");
      return 1;
    }

  tf (NULL);

  for (cnt = 0; cnt < N - 1; ++cnt)
    if (pthread_join (th[cnt], NULL) != 0)
      {
       puts ("pthread_join failed");
       return 1;
      }

  return 0;
}

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static void* tf ( void *  arg) [static]

Definition at line 33 of file tst-barrier4.c.

{
  int round = 0;

  while (round++ < 30)
    {
      if (pthread_barrier_wait (&b1) == PTHREAD_BARRIER_SERIAL_THREAD)
       {
         pthread_barrier_destroy (&b1);
         if (pthread_barrier_init (&b1, NULL, N) != 0)
           {
             puts ("tf: 1st barrier_init failed");
             exit (1);
           }
       }

      if (pthread_barrier_wait (&b2) == PTHREAD_BARRIER_SERIAL_THREAD)
       {
         pthread_barrier_destroy (&b2);
         if (pthread_barrier_init (&b2, NULL, N) != 0)
           {
             puts ("tf: 2nd barrier_init failed");
             exit (1);
           }
       }
    }

  return NULL;
}

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Variable Documentation

pthread_barrier_t b1 [static]

Definition at line 26 of file tst-barrier4.c.

pthread_barrier_t b2 [static]

Definition at line 27 of file tst-barrier4.c.