mirror of
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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
69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/* Deallocate a thread structure.
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Copyright (C) 2000-2019 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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#include <assert.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <pt-internal.h>
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#include <atomic.h>
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/* List of thread structures corresponding to free thread IDs. */
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extern struct __pthread *__pthread_free_threads;
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extern pthread_mutex_t __pthread_free_threads_lock;
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/* Deallocate the thread structure for PTHREAD. */
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void
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__pthread_dealloc (struct __pthread *pthread)
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{
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assert (pthread->state != PTHREAD_TERMINATED);
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if (!atomic_decrement_and_test (&pthread->nr_refs))
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return;
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/* Withdraw this thread from the thread ID lookup table. */
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__pthread_setid (pthread->thread, NULL);
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/* Mark the thread as terminated. We broadcast the condition
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here to prevent pthread_join from waiting for this thread to
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exit where it was never really started. Such a call to
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pthread_join is completely bogus, but unfortunately allowed
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by the standards. */
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__pthread_mutex_lock (&pthread->state_lock);
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if (pthread->state != PTHREAD_EXITED)
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__pthread_cond_broadcast (&pthread->state_cond);
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__pthread_mutex_unlock (&pthread->state_lock);
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/* We do not actually deallocate the thread structure, but add it to
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a list of re-usable thread structures. */
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__pthread_mutex_lock (&__pthread_free_threads_lock);
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__pthread_enqueue (&__pthread_free_threads, pthread);
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__pthread_mutex_unlock (&__pthread_free_threads_lock);
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/* Setting PTHREAD->STATE to PTHREAD_TERMINATED makes this TCB
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available for reuse. After that point, we can no longer assume
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that PTHREAD is valid.
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Note that it is safe to not lock this update to PTHREAD->STATE:
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the only way that it can now be accessed is in __pthread_alloc,
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which reads this variable. */
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pthread->state = PTHREAD_TERMINATED;
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}
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