169a287181
When running test-case gdb.threads/continue-pending-status.exp with native, I have: ... (gdb) continue^M Continuing.^M PASS: gdb.threads/continue-pending-status.exp: attempt 0: continue for ctrl-c ^C^M Thread 1 "continue-pendin" received signal SIGINT, Interrupt.^M [Switching to Thread 0x7ffff7fc4740 (LWP 1276)]^M 0x00007ffff758e4c0 in __GI___nanosleep () at nanosleep.c:27^M 27 return SYSCALL_CANCEL (nanosleep, requested_time, remaining);^M (gdb) PASS: gdb.threads/continue-pending-status.exp: attempt 0: caught interrupt ... but with target board unix/-m32, I run into: ... (gdb) continue^M Continuing.^M PASS: gdb.threads/continue-pending-status.exp: attempt 0: continue for ctrl-c [Thread 0xf74aeb40 (LWP 31957) exited]^M [Thread 0xf7cafb40 (LWP 31956) exited]^M [Inferior 1 (process 31952) exited normally]^M (gdb) Quit^M ... The problem is that the sleep (300) call at the end of main is interrupted, which causes the inferior to exit before the ctrl-c can be send. This problem is described at "Interrupted System Calls" in the docs, and the suggested solution (using a sleep loop) indeed fixes the problem. Fix this instead using the more prevalent: ... alarm (300); ... while (1) sleep (1); ... which is roughly equivalent because the sleep is called at the end of main, but slightly better because it guards against hangs from the start rather than from the end of main. Likewise in gdb.base/watch_thread_num.exp. Likewise in gdb.btrace/enable-running.exp, but use the sleep loop there, because the sleep is not called at the end of main. Tested on x86_64-linux.
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2015-2021 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <assert.h>
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pthread_barrier_t barrier;
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#define NUM_THREADS 2
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void *
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thread_function (void *arg)
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{
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/* This ensures that the breakpoint is only hit after both threads
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are created, so the test can always switch to the non-event
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thread when the breakpoint triggers. */
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pthread_barrier_wait (&barrier);
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while (1); /* break here */
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}
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int
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main (void)
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{
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int i;
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alarm (300);
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pthread_barrier_init (&barrier, NULL, NUM_THREADS);
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for (i = 0; i < NUM_THREADS; i++)
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{
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pthread_t thread;
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int res;
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res = pthread_create (&thread, NULL,
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thread_function, NULL);
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assert (res == 0);
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}
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while (1)
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sleep (1);
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return 0;
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}
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