1ed415e2b9
On software single-step targets that don't support displaced stepping, threads keep hitting each other's single-step breakpoints, and then GDB needs to pause all threads to step past those. The end result is that progress in the main thread will be slower and it may take a bit longer for the signal to be queued. This patch bumps the timeout on such targets. gdb/testsuite/ChangeLog: 2015-09-16 Pedro Alves <palves@redhat.com> Sandra Loosemore <sandra@codesourcery.com> * gdb.threads/non-stop-fair-events.c (timeout): New global. (SECONDS): Redefine. (main): Call pthread_kill and alarm early. * gdb.threads/non-stop-fair-events.exp: Probe displaced stepping support. (test): If the target can't hardware step and doesn't support displaced stepping, increase the timeout.
96 lines
2.1 KiB
C
96 lines
2.1 KiB
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. */
|
|
|
|
volatile unsigned int timeout = TIMEOUT;
|
|
#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;
|
|
|
|
/* Call these early so that we're sure their PLTs are quickly
|
|
resolved now, instead of in the busy threads. */
|
|
pthread_kill (pthread_self (), 0);
|
|
alarm (0);
|
|
|
|
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);
|
|
}
|