mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-27 12:15:39 +03:00
581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/* Smoke test for malloc_info.
|
|
Copyright (C) 2017-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* The purpose of this test is to provide a quick way to run
|
|
malloc_info in a multi-threaded process. */
|
|
|
|
#include <array_length.h>
|
|
#include <malloc.h>
|
|
#include <stdlib.h>
|
|
#include <support/support.h>
|
|
#include <support/xthread.h>
|
|
|
|
/* This barrier is used to have the main thread wait until the helper
|
|
threads have performed their allocations. */
|
|
static pthread_barrier_t barrier;
|
|
|
|
enum
|
|
{
|
|
/* Number of threads performing allocations. */
|
|
thread_count = 4,
|
|
|
|
/* Amount of memory allocation per thread. This should be large
|
|
enough to cause the allocation of multiple heaps per arena. */
|
|
per_thread_allocations
|
|
= sizeof (void *) == 4 ? 16 * 1024 * 1024 : 128 * 1024 * 1024,
|
|
};
|
|
|
|
static void *
|
|
allocation_thread_function (void *closure)
|
|
{
|
|
struct list
|
|
{
|
|
struct list *next;
|
|
long dummy[4];
|
|
};
|
|
|
|
struct list *head = NULL;
|
|
size_t allocated = 0;
|
|
while (allocated < per_thread_allocations)
|
|
{
|
|
struct list *new_head = xmalloc (sizeof (*new_head));
|
|
allocated += sizeof (*new_head);
|
|
new_head->next = head;
|
|
head = new_head;
|
|
}
|
|
|
|
xpthread_barrier_wait (&barrier);
|
|
|
|
/* Main thread prints first statistics here. */
|
|
|
|
xpthread_barrier_wait (&barrier);
|
|
|
|
while (head != NULL)
|
|
{
|
|
struct list *next_head = head->next;
|
|
free (head);
|
|
head = next_head;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
xpthread_barrier_init (&barrier, NULL, thread_count + 1);
|
|
|
|
pthread_t threads[thread_count];
|
|
for (size_t i = 0; i < array_length (threads); ++i)
|
|
threads[i] = xpthread_create (NULL, allocation_thread_function, NULL);
|
|
|
|
xpthread_barrier_wait (&barrier);
|
|
puts ("info: After allocation:");
|
|
malloc_info (0, stdout);
|
|
|
|
xpthread_barrier_wait (&barrier);
|
|
for (size_t i = 0; i < array_length (threads); ++i)
|
|
xpthread_join (threads[i]);
|
|
|
|
puts ("\ninfo: After deallocation:");
|
|
malloc_info (0, stdout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|