mirror of
https://sourceware.org/git/glibc.git
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5a82c74822
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
/* Single thread optimization, Linux version.
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Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _SINGLE_THREAD_H
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#define _SINGLE_THREAD_H
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/* The default way to check if the process is single thread is by using the
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pthread_t 'multiple_threads' field. However, for some architectures it is
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faster to either use an extra field on TCB or global variables (the TCB
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field is also used on x86 for some single-thread atomic optimizations).
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The ABI might define SINGLE_THREAD_BY_GLOBAL to enable the single thread
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check to use global variables instead of the pthread_t field. */
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#ifdef SINGLE_THREAD_BY_GLOBAL
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# if IS_IN (libc)
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extern int __libc_multiple_threads;
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# define SINGLE_THREAD_P \
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__glibc_likely (__libc_multiple_threads == 0)
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# elif IS_IN (libpthread)
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extern int __pthread_multiple_threads;
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# define SINGLE_THREAD_P \
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__glibc_likely (__pthread_multiple_threads == 0)
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# elif IS_IN (librt)
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# define SINGLE_THREAD_P \
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__glibc_likely (THREAD_GETMEM (THREAD_SELF, \
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header.multiple_threads) == 0)
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# else
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/* For rtld, et cetera. */
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# define SINGLE_THREAD_P (1)
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# endif
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#else /* SINGLE_THREAD_BY_GLOBAL */
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# if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
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# define SINGLE_THREAD_P \
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__glibc_likely (THREAD_GETMEM (THREAD_SELF, \
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header.multiple_threads) == 0)
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# else
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/* For rtld, et cetera. */
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# define SINGLE_THREAD_P (1)
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# endif
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#endif /* SINGLE_THREAD_BY_GLOBAL */
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#define RTLD_SINGLE_THREAD_P \
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__glibc_likely (THREAD_GETMEM (THREAD_SELF, \
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header.multiple_threads) == 0)
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#endif /* _SINGLE_THREAD_H */
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