path: root/rt/tst-timer4.c

/* Tests for POSIX timer implementation.
   Copyright (C) 2004-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If
   not, see <https://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <stdint.h>
#if _POSIX_THREADS && defined SA_SIGINFO
# include <pthread.h>

# ifndef TEST_CLOCK
#  define TEST_CLOCK		CLOCK_REALTIME
# endif

pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;

timer_t timer_none, timer_sig1, timer_sig2, timer_thr1, timer_thr2;

int thr1_cnt, thr1_err;
union sigval thr1_sigval;
struct timespec thr1_ts;

static void
thr1 (union sigval sigval)
{
  pthread_mutex_lock (&lock);
  thr1_err = clock_gettime (TEST_CLOCK, &thr1_ts);
  if (thr1_cnt >= 5)
    {
      struct itimerspec it = { };
      thr1_err |= timer_settime (timer_thr1, 0, &it, NULL);
    }
  thr1_sigval = sigval;
  ++thr1_cnt;
  pthread_cond_signal (&cond);
  pthread_mutex_unlock (&lock);
}

int thr2_cnt, thr2_err;
union sigval thr2_sigval;
size_t thr2_guardsize;
struct timespec thr2_ts;

static void
thr2 (union sigval sigval)
{
  pthread_attr_t nattr;
  int err = 0;
  size_t guardsize = -1;
  int ret = pthread_getattr_np (pthread_self (), &nattr);
  if (ret)
    {
      errno = ret;
      printf ("*** pthread_getattr_np failed: %m\n");
      err = 1;
    }
  else
    {
      ret = pthread_attr_getguardsize (&nattr, &guardsize);
      if (ret)
        {
          errno = ret;
          printf ("*** pthread_attr_getguardsize failed: %m\n");
          err = 1;
        }
      if (pthread_attr_destroy (&nattr) != 0)
        {
          puts ("*** pthread_attr_destroy failed");
          err = 1;
        }
    }
  pthread_mutex_lock (&lock);
  thr2_err = clock_gettime (TEST_CLOCK, &thr2_ts) | err;
  if (thr2_cnt >= 5)
    {
      struct itimerspec it = { };
      thr2_err |= timer_settime (timer_thr2, 0, &it, NULL);
    }
  thr2_sigval = sigval;
  ++thr2_cnt;
  thr2_guardsize = guardsize;
  pthread_cond_signal (&cond);
  pthread_mutex_unlock (&lock);
}

volatile int sig1_cnt, sig1_err;
volatile union sigval sig1_sigval;
struct timespec sig1_ts;

static void
sig1_handler (int sig,