mirror of
git://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
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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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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#include <setjmp.h>
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#include <stdlib.h>
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#include "pthreadP.h"
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#include <futex-internal.h>
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/* The next two functions are similar to pthread_setcanceltype() but
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more specialized for the use in the cancelable functions like write().
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They do not need to check parameters etc. */
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int
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attribute_hidden
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__pthread_enable_asynccancel (void)
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{
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struct pthread *self = THREAD_SELF;
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int oldval = THREAD_GETMEM (self, cancelhandling);
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while (1)
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{
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int newval = oldval | CANCELTYPE_BITMASK;
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if (newval == oldval)
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break;
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int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
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oldval);
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if (__glibc_likely (curval == oldval))
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{
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if (CANCEL_ENABLED_AND_CANCELED_AND_ASYNCHRONOUS (newval))
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{
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THREAD_SETMEM (self, result, PTHREAD_CANCELED);
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__do_cancel ();
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}
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break;
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}
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/* Prepare the next round. */
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oldval = curval;
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}
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return oldval;
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}
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void
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attribute_hidden
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__pthread_disable_asynccancel (int oldtype)
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{
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/* If asynchronous cancellation was enabled before we do not have
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anything to do. */
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if (oldtype & CANCELTYPE_BITMASK)
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return;
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struct pthread *self = THREAD_SELF;
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int newval;
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int oldval = THREAD_GETMEM (self, cancelhandling);
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while (1)
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{
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newval = oldval & ~CANCELTYPE_BITMASK;
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int curval = THREAD_ATOMIC_CMPXCHG_VAL (self, cancelhandling, newval,
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oldval);
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if (__glibc_likely (curval == oldval))
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break;
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/* Prepare the next round. */
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oldval = curval;
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}
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/* We cannot return when we are being canceled. Upon return the
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thread might be things which would have to be undone. The
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following loop should loop until the cancellation signal is
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delivered. */
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while (__builtin_expect ((newval & (CANCELING_BITMASK | CANCELED_BITMASK))
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== CANCELING_BITMASK, 0))
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{
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futex_wait_simple ((unsigned int *) &self->cancelhandling, newval,
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FUTEX_PRIVATE);
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newval = THREAD_GETMEM (self, cancelhandling);
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}
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}
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