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glibc  2.9
Defines | Functions | Variables
tst-tsd6.c File Reference
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include "../test-skeleton.c"

Go to the source code of this file.

Defines

#define NKEYS   100
#define TEST_FUNCTION   do_test ()

Functions

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

Variables

static pthread_key_t keys [NKEYS]
static pthread_barrier_t b

Define Documentation

#define NKEYS   100

Definition at line 8 of file tst-tsd6.c.

#define TEST_FUNCTION   do_test ()

Definition at line 88 of file tst-tsd6.c.


Function Documentation

static int do_test ( void  ) [static]

Definition at line 34 of file tst-tsd6.c.

{
  pthread_barrier_init (&b, NULL, 2);

  for (int i = 0; i < NKEYS; ++i)
    if (pthread_key_create (&keys[i], NULL) != 0)
      {
       puts ("cannot create keys");
       return 1;
      }

  pthread_t th;
  if (pthread_create (&th, NULL, tf, &b) != 0)
    {
      puts ("cannot create thread in parent");
      return 1;
    }

  pthread_barrier_wait (&b);

  pid_t pid = fork ();
  if (pid == 0)
    {
      if (pthread_create (&th, NULL, tf, NULL) != 0)
       {
         puts ("cannot create thread in child");
         exit (1);
       }

      void *res;
      pthread_join (th, &res);

      exit (res != NULL);
    }
  else if (pid == -1)
    {
      puts ("cannot create child process");
      return 1;
    }

  int s;
  if (TEMP_FAILURE_RETRY (waitpid (pid, &s, 0)) != pid)
    {
      puts ("failing to wait for child process");
      return 1;
    }

  pthread_barrier_wait (&b);
  pthread_join (th, NULL);

  return !WIFEXITED (s) ? 2 : WEXITSTATUS (s);
}

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

Definition at line 14 of file tst-tsd6.c.

{
  void *res = NULL;
  for (int i = 0; i < NKEYS; ++i)
    {
      void *p = pthread_getspecific (keys[i]);
      pthread_setspecific (keys[i], (void *) 7);
      if (p != NULL)
       res = p;
    }
  if (arg != NULL)
    {
      pthread_barrier_wait (arg);
      pthread_barrier_wait (arg);
    }
  return res;
}

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Variable Documentation

pthread_barrier_t b [static]

Definition at line 10 of file tst-tsd6.c.

Definition at line 9 of file tst-tsd6.c.