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fc00cf7bcd
Carlos reported failures in conform/ tests in environments where the compiler used could only find headers in glibc's source and build trees, not any previously installed headers <https://sourceware.org/ml/libc-alpha/2014-09/msg00040.html>. This patch moves nptl/semaphore.h to sysdeps/pthread/semaphore.h so that it can be found by builds from all glibc subdirectories; it's not in any way NPTL-specific. (I left the Makefile setting to install this header in nptl/, but maybe it should move as well - it's just not clear to me what ifeq ($(subdir),...) conditional should be used to select the directory to associate the header with for installation purposes. The path in the toplevel Makefile used for begin-end-check also remains hardcoded; it's a known todo issue to rework that test to run in each subdirectory checking the headers installed from that subdirectory, rather than a separate hardcoded list.) Tested for x86_64 (testsuite, and that installed stripped shared libraries are unchanged by the patch). I did *not* test a configuration such as that in which Carlos saw failure. * nptl/semaphore.h: Move to ... * sysdeps/pthread/semaphore.h: ... here. * Makefile (installed-headers): Change nptl/semaphore.h to sysdeps/pthread/semaphore.h.
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* Copyright (C) 2002-2014 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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<http://www.gnu.org/licenses/>. */
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#ifndef _SEMAPHORE_H
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#define _SEMAPHORE_H 1
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#include <features.h>
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#include <sys/types.h>
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#ifdef __USE_XOPEN2K
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# define __need_timespec
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# include <time.h>
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#endif
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/* Get the definition for sem_t. */
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#include <bits/semaphore.h>
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__BEGIN_DECLS
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/* Initialize semaphore object SEM to VALUE. If PSHARED then share it
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with other processes. */
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extern int sem_init (sem_t *__sem, int __pshared, unsigned int __value)
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__THROW;
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/* Free resources associated with semaphore object SEM. */
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extern int sem_destroy (sem_t *__sem) __THROW;
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/* Open a named semaphore NAME with open flags OFLAG. */
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extern sem_t *sem_open (const char *__name, int __oflag, ...) __THROW;
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/* Close descriptor for named semaphore SEM. */
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extern int sem_close (sem_t *__sem) __THROW;
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/* Remove named semaphore NAME. */
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extern int sem_unlink (const char *__name) __THROW;
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/* Wait for SEM being posted.
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern int sem_wait (sem_t *__sem);
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#ifdef __USE_XOPEN2K
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/* Similar to `sem_wait' but wait only until ABSTIME.
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern int sem_timedwait (sem_t *__restrict __sem,
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const struct timespec *__restrict __abstime);
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#endif
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/* Test whether SEM is posted. */
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extern int sem_trywait (sem_t *__sem) __THROWNL;
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/* Post SEM. */
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extern int sem_post (sem_t *__sem) __THROWNL;
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/* Get current value of SEM and store it in *SVAL. */
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extern int sem_getvalue (sem_t *__restrict __sem, int *__restrict __sval)
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__THROW;
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__END_DECLS
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#endif /* semaphore.h */
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