115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/* This testcase is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2009 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/>.
|
|
|
|
Check that watchpoints get propagated to all existing threads when the
|
|
watchpoint is created.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <pthread.h>
|
|
|
|
#ifndef NR_THREADS
|
|
#define NR_THREADS 4
|
|
#endif
|
|
|
|
#ifndef X_INCR_COUNT
|
|
#define X_INCR_COUNT 10
|
|
#endif
|
|
|
|
void *thread_function (void *arg); /* Function executed by each thread. */
|
|
|
|
pthread_mutex_t x_mutex;
|
|
int x;
|
|
|
|
/* Used to hold threads back until watchthreads2.exp is ready. */
|
|
int test_ready = 0;
|
|
|
|
int
|
|
main ()
|
|
{
|
|
int res;
|
|
pthread_t threads[NR_THREADS];
|
|
int i;
|
|
|
|
pthread_mutex_init (&x_mutex, NULL);
|
|
|
|
for (i = 0; i < NR_THREADS; ++i)
|
|
{
|
|
res = pthread_create (&threads[i],
|
|
NULL,
|
|
thread_function,
|
|
(void *) (intptr_t) i);
|
|
if (res != 0)
|
|
{
|
|
fprintf (stderr, "error in thread %d create\n", i);
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < NR_THREADS; ++i)
|
|
{
|
|
res = pthread_join (threads[i], NULL);
|
|
if (res != 0)
|
|
{
|
|
fprintf (stderr, "error in thread %d join\n", i);
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
exit (EXIT_SUCCESS);
|
|
}
|
|
|
|
/* Easy place for a breakpoint.
|
|
watchthreads2.exp uses this to track when all threads are running
|
|
instead of, for example, the program keeping track
|
|
because we don't need the program to know when all threads are running,
|
|
instead we need gdb to know when all threads are running.
|
|
There is a delay between when a thread has started and when the thread
|
|
has been registered with gdb. */
|
|
|
|
void
|
|
thread_started ()
|
|
{
|
|
}
|
|
|
|
void *
|
|
thread_function (void *arg)
|
|
{
|
|
int i;
|
|
|
|
thread_started ();
|
|
|
|
/* Don't start incrementing X until watchthreads2.exp is ready. */
|
|
while (! test_ready)
|
|
usleep (1);
|
|
|
|
for (i = 0; i < X_INCR_COUNT; ++i)
|
|
{
|
|
pthread_mutex_lock (&x_mutex);
|
|
/* For debugging. */
|
|
printf ("Thread %ld changing x %d -> %d\n", (long) arg, x, x + 1);
|
|
/* The call to usleep is so that when the watchpoint triggers,
|
|
the pc is still on the same line. */
|
|
++x; usleep (1); /* X increment. */
|
|
pthread_mutex_unlock (&x_mutex);
|
|
}
|
|
|
|
pthread_exit (NULL);
|
|
}
|