Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
glibc/nptl/semaphoreP.h
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
54 lines (41 sloc)
1.82 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* Copyright (C) 2002-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
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 | |
<http://www.gnu.org/licenses/>. */ | |
#include <semaphore.h> | |
#include "pthreadP.h" | |
#define SEM_SHM_PREFIX "sem." | |
/* Keeping track of currently used mappings. */ | |
struct inuse_sem | |
{ | |
dev_t dev; | |
ino_t ino; | |
int refcnt; | |
sem_t *sem; | |
char name[0]; | |
}; | |
/* The search tree for existing mappings. */ | |
extern void *__sem_mappings attribute_hidden; | |
/* Lock to protect the search tree. */ | |
extern int __sem_mappings_lock attribute_hidden; | |
/* Comparison function for search in tree with existing mappings. */ | |
extern int __sem_search (const void *a, const void *b) attribute_hidden; | |
/* Prototypes of functions with multiple interfaces. */ | |
extern int __new_sem_init (sem_t *sem, int pshared, unsigned int value); | |
extern int __old_sem_init (sem_t *sem, int pshared, unsigned int value); | |
extern int __new_sem_destroy (sem_t *sem); | |
extern int __new_sem_post (sem_t *sem); | |
extern int __new_sem_wait (sem_t *sem); | |
extern int __old_sem_wait (sem_t *sem); | |
extern int __new_sem_trywait (sem_t *sem); | |
extern int __new_sem_getvalue (sem_t *sem, int *sval); |