1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
151 lines
3 KiB
C
151 lines
3 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2015-2024 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 <assert.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <errno.h>
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/* Number of threads. Each thread continuously spawns a fork and wait
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for it. If we have another thread continuously start a step over,
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gdbserver should end up finding new forks while suspending
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threads. */
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#define NTHREADS 10
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pthread_t threads[NTHREADS];
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pthread_barrier_t barrier;
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#define NFORKS 10
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/* Used to create a conditional breakpoint that always fails. */
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volatile int zero;
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static void *
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thread_forks (void *arg)
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{
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int i;
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pthread_barrier_wait (&barrier);
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for (i = 0; i < NFORKS; i++)
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{
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pid_t pid;
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do
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{
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pid = fork ();
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}
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while (pid == -1 && errno == EINTR);
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if (pid > 0)
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{
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int status;
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/* Parent. */
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do
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{
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pid = waitpid (pid, &status, 0);
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}
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while (pid == -1 && errno == EINTR);
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if (pid == -1)
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{
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perror ("wait");
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exit (1);
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}
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if (!WIFEXITED (status))
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{
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printf ("Unexpected wait status 0x%x from child %d\n",
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status, pid);
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}
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}
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else if (pid == 0)
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{
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/* Child. */
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exit (0);
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}
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else
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{
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perror ("fork");
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exit (1);
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}
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}
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return NULL;
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}
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/* Set this to tell the thread_breakpoint thread to exit. */
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volatile int break_out;
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static void *
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thread_breakpoint (void *arg)
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{
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pthread_barrier_wait (&barrier);
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while (!break_out)
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{
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usleep (1); /* set break here */
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}
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return NULL;
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}
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pthread_barrier_t barrier;
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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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int ret;
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pthread_t bp_thread;
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/* Don't run forever. */
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alarm (180);
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pthread_barrier_init (&barrier, NULL, NTHREADS + 1);
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/* Start the threads that constantly fork. */
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for (i = 0; i < NTHREADS; i++)
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{
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ret = pthread_create (&threads[i], NULL, thread_forks, NULL);
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assert (ret == 0);
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}
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/* Start the thread that constantly hit a conditional breakpoint
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that needs to be stepped over. */
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ret = pthread_create (&bp_thread, NULL, thread_breakpoint, NULL);
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assert (ret == 0);
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/* Wait for forking to stop. */
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for (i = 0; i < NTHREADS; i++)
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{
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ret = pthread_join (threads[i], NULL);
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assert (ret == 0);
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}
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break_out = 1;
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pthread_join (bp_thread, NULL);
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assert (ret == 0);
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return 0;
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}
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