143 lines
3.2 KiB
C
143 lines
3.2 KiB
C
/* This testcase is part of GDB, the GNU debugger.
|
|
|
|
Copyright 2014-2017 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 <signal.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
/* Used to individually advance each thread to the desired stopping point. */
|
|
int ready;
|
|
|
|
sig_atomic_t sigusr1_received;
|
|
sig_atomic_t sigusr2_received;
|
|
sig_atomic_t sigabrt_received;
|
|
|
|
/* Number of threads currently running. */
|
|
int thread_count;
|
|
pthread_mutex_t thread_count_mutex;
|
|
pthread_cond_t thread_count_condvar;
|
|
|
|
static void
|
|
incr_thread_count (void)
|
|
{
|
|
pthread_mutex_lock (&thread_count_mutex);
|
|
++thread_count;
|
|
pthread_cond_signal (&thread_count_condvar);
|
|
pthread_mutex_unlock (&thread_count_mutex);
|
|
}
|
|
|
|
static void
|
|
sigusr1_handler (int sig)
|
|
{
|
|
sigusr1_received = 1;
|
|
}
|
|
|
|
static void
|
|
sigusr2_handler (int sig)
|
|
{
|
|
sigusr2_received = 1;
|
|
}
|
|
|
|
static void
|
|
sigabrt_handler (int sig)
|
|
{
|
|
sigabrt_received = 1;
|
|
}
|
|
|
|
static void *
|
|
sigusr1_thread_function (void *unused)
|
|
{
|
|
incr_thread_count ();
|
|
while (!ready)
|
|
usleep (100);
|
|
pthread_kill (pthread_self (), SIGUSR1);
|
|
}
|
|
|
|
static void *
|
|
sigusr2_thread_function (void *unused)
|
|
{
|
|
incr_thread_count ();
|
|
while (!ready)
|
|
usleep (100);
|
|
/* pthread_kill (pthread_self (), SIGUSR2); - manually injected by gdb */
|
|
}
|
|
|
|
/* Wait until all threads are at a point where a backtrace will
|
|
show the thread entry point function. */
|
|
|
|
static void
|
|
wait_all_threads_running (int nr_threads)
|
|
{
|
|
pthread_mutex_lock (&thread_count_mutex);
|
|
|
|
while (1)
|
|
{
|
|
if (thread_count == nr_threads)
|
|
{
|
|
pthread_mutex_unlock (&thread_count_mutex);
|
|
return;
|
|
}
|
|
pthread_cond_wait (&thread_count_condvar, &thread_count_mutex);
|
|
}
|
|
}
|
|
|
|
static void
|
|
all_threads_running (void)
|
|
{
|
|
while (!ready)
|
|
usleep (100);
|
|
}
|
|
|
|
static void
|
|
all_threads_done (void)
|
|
{
|
|
}
|
|
|
|
int
|
|
main ()
|
|
{
|
|
pthread_t sigusr1_thread, sigusr2_thread;
|
|
|
|
/* Protect against running forever. */
|
|
alarm (60);
|
|
|
|
signal (SIGUSR1, sigusr1_handler);
|
|
signal (SIGUSR2, sigusr2_handler);
|
|
signal (SIGABRT, sigabrt_handler);
|
|
|
|
/* Don't let any thread advance past initialization. */
|
|
ready = 0;
|
|
|
|
pthread_mutex_init (&thread_count_mutex, NULL);
|
|
pthread_cond_init (&thread_count_condvar, NULL);
|
|
|
|
#define NR_THREADS 2
|
|
pthread_create (&sigusr1_thread, NULL, sigusr1_thread_function, NULL);
|
|
pthread_create (&sigusr2_thread, NULL, sigusr2_thread_function, NULL);
|
|
wait_all_threads_running (NR_THREADS);
|
|
all_threads_running ();
|
|
|
|
pthread_kill (pthread_self (), SIGABRT);
|
|
|
|
pthread_join (sigusr1_thread, NULL);
|
|
pthread_join (sigusr2_thread, NULL);
|
|
all_threads_done ();
|
|
|
|
return 0;
|
|
}
|