[deliverable/binutils-gdb.git] / gdb / testsuite / gdb.threads / non-stop-fair-events.c

/* This testcase is part of GDB, the GNU debugger.

   Copyright 2014-2015 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>

#define NUM_THREADS 10
const int num_threads = NUM_THREADS;
/* Allow for as much timeout as DejaGnu wants, plus a bit of
   slack.  */
#define SECONDS (TIMEOUT + 20)

pthread_t child_thread[NUM_THREADS];
volatile pthread_t signal_thread;
volatile int got_sig;

void
handler (int signo)
{
  got_sig = 1;
}

void
loop_broke (void)
{
}

#define INF_LOOP				\
  do						\
    {						\
      while (!got_sig)				\
	;					\
    }						\
  while (0)

void *
child_function (void *arg)
{
  pthread_t self = pthread_self ();

  while (1)
    {
      /* Reset the timer before going to INF_LOOP.  */
      alarm (SECONDS);
      INF_LOOP; /* set thread breakpoint here */
      loop_broke ();
    }
}

int
main (void)
{
  int res;
  int i;

  signal (SIGUSR1, handler);

  for (i = 0; i < NUM_THREADS; i++)
    {
      res = pthread_create (&child_thread[i], NULL, child_function, NULL);
    }

  while (1)
    {
      pthread_kill (signal_thread, SIGUSR1); /* set kill breakpoint here */
      /* Reset the timer before going to INF_LOOP.  */
      alarm (SECONDS);
      INF_LOOP;
      loop_broke ();
    }

  exit(EXIT_SUCCESS);
}
Commit	Line	Data
ede9f622 PA	1	/* This testcase is part of GDB, the GNU debugger.
	2
	3	Copyright 2014-2015 Free Software Foundation, Inc.
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	17
	18	#include <pthread.h>
	19	#include <unistd.h>
	20	#include <stdlib.h>
	21	#include <signal.h>
	22
	23	#define NUM_THREADS 10
	24	const int num_threads = NUM_THREADS;
337532fa YQ	25	/* Allow for as much timeout as DejaGnu wants, plus a bit of
	26	slack. */
	27	#define SECONDS (TIMEOUT + 20)
ede9f622 PA	28
	29	pthread_t child_thread[NUM_THREADS];
	30	volatile pthread_t signal_thread;
	31	volatile int got_sig;
	32
	33	void
	34	handler (int signo)
	35	{
	36	got_sig = 1;
	37	}
	38
	39	void
	40	loop_broke (void)
	41	{
	42	}
	43
	44	#define INF_LOOP \
	45	do \
	46	{ \
	47	while (!got_sig) \
	48	; \
	49	} \
	50	while (0)
	51
	52	void *
	53	child_function (void *arg)
	54	{
	55	pthread_t self = pthread_self ();
	56
	57	while (1)
	58	{
337532fa YQ	59	/* Reset the timer before going to INF_LOOP. */
337532fa YQ	60	alarm (SECONDS);
ede9f622 PA	61	INF_LOOP; /* set thread breakpoint here */
	62	loop_broke ();
	63	}
	64	}
	65
	66	int
	67	main (void)
	68	{
	69	int res;
	70	int i;
	71
ede9f622 PA	72	signal (SIGUSR1, handler);
	73
	74	for (i = 0; i < NUM_THREADS; i++)
	75	{
	76	res = pthread_create (&child_thread[i], NULL, child_function, NULL);
	77	}
	78
	79	while (1)
	80	{
	81	pthread_kill (signal_thread, SIGUSR1); /* set kill breakpoint here */
337532fa YQ	82	/* Reset the timer before going to INF_LOOP. */
337532fa YQ	83	alarm (SECONDS);
ede9f622 PA	84	INF_LOOP;
	85	loop_broke ();
	86	}
	87
	88	exit(EXIT_SUCCESS);
	89	}