mirror of
https://github.com/bminor/binutils-gdb.git
synced 2025-12-12 02:22:51 +00:00
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.
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2016-2024 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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#define _GNU_SOURCE
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#include <stdlib.h>
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#include <unistd.h>
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#include <sched.h>
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#include <pthread.h>
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static void
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marker ()
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{}
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#define STACK_SIZE 0x1000
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/* These are used to signal that the threads have started correctly. The
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GLOBAL_THREAD_COUNT is set to the number of threads in main, then
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decremented (under a lock) in each new thread. */
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pthread_mutex_t global_lock = PTHREAD_MUTEX_INITIALIZER;
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int global_thread_count = 0;
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static int
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clone_fn (void *unused)
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{
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/* Signal that this thread has started correctly. */
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if (pthread_mutex_lock (&global_lock) != 0)
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abort ();
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global_thread_count--;
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if (pthread_mutex_unlock (&global_lock) != 0)
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abort ();
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return 0;
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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, pid;
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unsigned char *stack[6];
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/* Due to bug gdb/19675 the cloned thread _might_ try to reenter main
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(this depends on where the displaced instruction is placed for
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execution). However, if we do reenter main then lets ensure we fail
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hard rather then just silently executing the code below. */
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static int started = 0;
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if (!started)
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started = 1;
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else
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abort ();
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for (i = 0; i < (sizeof (stack) / sizeof (stack[0])); i++)
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stack[i] = malloc (STACK_SIZE);
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global_thread_count = (sizeof (stack) / sizeof (stack[0]));
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for (i = 0; i < (sizeof (stack) / sizeof (stack[0])); i++)
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{
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pid = clone (clone_fn, stack[i] + STACK_SIZE, CLONE_FILES | CLONE_VM,
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NULL);
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}
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for (i = 0; i < (sizeof (stack) / sizeof (stack[0])); i++)
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free (stack[i]);
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/* Set an alarm so we don't end up stuck waiting for threads that might
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never start correctly. */
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alarm (120);
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/* Now wait for all the threads to start up. */
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while (global_thread_count != 0)
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{
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/* Force memory barrier so GLOBAL_THREAD_COUNT will be refetched. */
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asm volatile ("" ::: "memory");
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sleep (1);
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}
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/* Call marker, this is what GDB is waiting for. */
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marker ();
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}
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