mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-15 04:20:28 +08:00
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
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/* Test support for single-thread optimizations. No threads, static dlopen.
|
|
Copyright (C) 2020-2022 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/>. */
|
|
|
|
/* In a static dlopen scenario, the single-threaded optimization is
|
|
not possible because their is no globally shared dynamic linker
|
|
across all namespaces. */
|
|
|
|
#include <stddef.h>
|
|
#include <support/check.h>
|
|
#include <support/xdlfcn.h>
|
|
#include <sys/single_threaded.h>
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
TEST_VERIFY (__libc_single_threaded);
|
|
|
|
/* Defined in tst-single-threaded-mod1.o. */
|
|
extern _Bool single_threaded_1 (void);
|
|
TEST_VERIFY (single_threaded_1 ());
|
|
|
|
/* A failed dlopen does not change the multi-threaded status. */
|
|
TEST_VERIFY (dlopen ("tst-single_threaded-does-not-exist.so", RTLD_LAZY)
|
|
== NULL);
|
|
TEST_VERIFY (__libc_single_threaded);
|
|
TEST_VERIFY (single_threaded_1 ());
|
|
|
|
/* And neither does a successful dlopen for outer (static) libc. */
|
|
void *handle_mod2 = xdlopen ("tst-single_threaded-mod2.so", RTLD_LAZY);
|
|
_Bool (*single_threaded_2) (void)
|
|
= xdlsym (handle_mod2, "single_threaded_2");
|
|
TEST_VERIFY (__libc_single_threaded);
|
|
TEST_VERIFY (single_threaded_1 ());
|
|
/* The inner libc always assumes multi-threaded use. */
|
|
TEST_VERIFY (!single_threaded_2 ());
|
|
|
|
xdlclose (handle_mod2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|