mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
119 lines
2.5 KiB
C
119 lines
2.5 KiB
C
/* This testcase is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2009-2020 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>
|
|
|
|
unsigned int args[2];
|
|
|
|
pthread_barrier_t barrier;
|
|
pthread_t child_thread_2, child_thread_3;
|
|
|
|
void
|
|
handler (int signo)
|
|
{
|
|
/* so that thread 3 is sure to run, in case the bug is present. */
|
|
usleep (10);
|
|
}
|
|
|
|
void
|
|
callme (void)
|
|
{
|
|
}
|
|
|
|
void *
|
|
child_function_3 (void *arg)
|
|
{
|
|
int my_number = (long) arg;
|
|
volatile int *myp = (int *) &args[my_number];
|
|
|
|
pthread_barrier_wait (&barrier);
|
|
|
|
while (*myp > 0)
|
|
{
|
|
(*myp) ++; /* set breakpoint child_two here */
|
|
callme ();
|
|
}
|
|
|
|
pthread_exit (NULL);
|
|
}
|
|
|
|
void *
|
|
child_function_2 (void *arg)
|
|
{
|
|
int my_number = (long) arg;
|
|
volatile int *myp = (int *) &args[my_number];
|
|
|
|
pthread_barrier_wait (&barrier);
|
|
|
|
while (*myp > 0)
|
|
{
|
|
(*myp) ++;
|
|
callme (); /* set breakpoint child_one here */
|
|
}
|
|
|
|
*myp = 1;
|
|
while (*myp > 0)
|
|
{
|
|
(*myp) ++;
|
|
callme ();
|
|
}
|
|
|
|
pthread_exit (NULL);
|
|
}
|
|
|
|
|
|
int
|
|
main ()
|
|
{
|
|
int res;
|
|
long i;
|
|
|
|
signal (SIGUSR1, handler);
|
|
|
|
/* Call these early so that PLTs for these are resolved soon,
|
|
instead of in the threads. RTLD_NOW should work as well. */
|
|
usleep (0);
|
|
pthread_barrier_init (&barrier, NULL, 1);
|
|
pthread_barrier_wait (&barrier);
|
|
|
|
pthread_barrier_init (&barrier, NULL, 2);
|
|
|
|
i = 0;
|
|
args[i] = 1;
|
|
res = pthread_create (&child_thread_2,
|
|
NULL, child_function_2, (void *) i);
|
|
pthread_barrier_wait (&barrier);
|
|
callme (); /* set wait-thread-2 breakpoint here */
|
|
|
|
i = 1;
|
|
args[i] = 1;
|
|
res = pthread_create (&child_thread_3,
|
|
NULL, child_function_3, (void *) i);
|
|
pthread_barrier_wait (&barrier);
|
|
callme (); /* set wait-thread-3 breakpoint here */
|
|
|
|
pthread_kill (child_thread_2, SIGUSR1);
|
|
|
|
pthread_join (child_thread_2, NULL);
|
|
pthread_join (child_thread_3, NULL);
|
|
|
|
exit(EXIT_SUCCESS);
|
|
}
|