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glibc  2.9
Classes | Defines | Functions | Variables
tst-cond7.c File Reference
#include <errno.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/time.h>
#include "../test-skeleton.c"

Go to the source code of this file.

Classes

struct  T

Defines

#define N   100
#define TEST_FUNCTION   do_test ()

Functions

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

Variables

static volatile bool done

Class Documentation

struct T

Definition at line 30 of file tst-cond7.c.

Collaboration diagram for T:
Class Members
pthread_cond_t cond
pthread_t h
pthread_mutex_t lock

Define Documentation

#define N   100
#define TEST_FUNCTION   do_test ()

Definition at line 167 of file tst-cond7.c.


Function Documentation

static int do_test ( void  ) [static]

Definition at line 86 of file tst-cond7.c.

{
  int i;
#define N 100
  T *t[N];
  for (i = 0; i < N; ++i)
    {
      printf ("round %d\n", i);

      t[i] = (T *) malloc (sizeof (T));
      if (t[i] == NULL)
       {
         puts ("out of memory");
         exit (1);
       }

      if (pthread_mutex_init (&t[i]->lock, NULL) != 0
         || pthread_cond_init (&t[i]->cond, NULL) != 0)
       {
         puts ("an _init function failed");
         exit (1);
       }

      if (pthread_mutex_lock (&t[i]->lock) != 0)
       {
         puts ("initial mutex_lock failed");
         exit (1);
       }

      done = false;

      if (pthread_create (&t[i]->h, NULL, tf, t[i]) != 0)
       {
         puts ("pthread_create failed");
         exit (1);
       }

      do
       if (pthread_cond_wait (&t[i]->cond, &t[i]->lock) != 0)
         {
           puts ("cond_wait failed");
           exit (1);
         }
      while (! done);

      /* Release the lock since the cancel handler will get it.  */
      if (pthread_mutex_unlock (&t[i]->lock) != 0)
       {
         puts ("mutex_unlock failed");
         exit (1);
       }

      if (pthread_cancel (t[i]->h) != 0)
       {
         puts ("cancel failed");
         exit (1);
       }

      puts ("parent: joining now");

      void *result;
      if (pthread_join (t[i]->h, &result) != 0)
       {
         puts ("join failed");
         exit (1);
       }

      if (result != PTHREAD_CANCELED)
       {
         puts ("result != PTHREAD_CANCELED");
         exit (1);
       }
    }

  for (i = 0; i < N; ++i)
    free (t[i]);

  return 0;
}

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

Definition at line 42 of file tst-cond7.c.

{
  puts ("child created");

  if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL) != 0
      || pthread_setcanceltype (PTHREAD_CANCEL_DEFERRED, NULL) != 0)
    {
      puts ("cannot set cancellation options");
      exit (1);
    }

  T *t = (T *) arg;

  if (pthread_mutex_lock (&t->lock) != 0)
    {
      puts ("child: lock failed");
      exit (1);
    }

  done = true;

  if (pthread_cond_signal (&t->cond) != 0)
    {
      puts ("child: cond_signal failed");
      exit (1);
    }

  if (pthread_cond_wait (&t->cond, &t->lock) != 0)
    {
      puts ("child: cond_wait failed");
      exit (1);
    }

  if (pthread_mutex_unlock (&t->lock) != 0)
    {
      puts ("child: unlock failed");
      exit (1);
    }

  return NULL;
}

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Variable Documentation

volatile bool done [static]

Definition at line 38 of file tst-cond7.c.