80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/* Condition variables (native Windows implementation).
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Copyright (C) 2008-2022 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Yoann Vandoorselaere <yoann@prelude-ids.org>, 2008.
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Based on Bruno Haible <bruno@clisp.org> lock.h */
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#ifndef _WINDOWS_COND_H
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#define _WINDOWS_COND_H
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#define WIN32_LEAN_AND_MEAN /* avoid including junk */
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#include <windows.h>
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#include <time.h>
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#include "windows-initguard.h"
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#ifndef _glwthread_linked_waitqueue_link_defined
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#define _glwthread_linked_waitqueue_link_defined
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struct glwthread_waitqueue_link
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{
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struct glwthread_waitqueue_link *wql_next;
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struct glwthread_waitqueue_link *wql_prev;
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};
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#endif /* _glwthread_linked_waitqueue_link_defined */
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typedef struct
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{
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struct glwthread_waitqueue_link wq_list; /* circular list of waiting threads */
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}
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glwthread_linked_waitqueue_t;
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typedef struct
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{
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glwthread_initguard_t guard; /* protects the initialization */
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CRITICAL_SECTION lock; /* protects the remaining fields */
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glwthread_linked_waitqueue_t waiters; /* waiting threads */
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}
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glwthread_cond_t;
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#define GLWTHREAD_COND_INIT { GLWTHREAD_INITGUARD_INIT }
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int glwthread_cond_init (glwthread_cond_t *cond);
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/* Here, to cope with the various types of mutexes, the mutex is a 'void *', and
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the caller needs to pass the corresponding *_lock and *_unlock functions. */
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extern int glwthread_cond_wait (glwthread_cond_t *cond,
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void *mutex,
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int (*mutex_lock) (void *),
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int (*mutex_unlock) (void *));
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extern int glwthread_cond_timedwait (glwthread_cond_t *cond,
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void *mutex,
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int (*mutex_lock) (void *),
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int (*mutex_unlock) (void *),
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const struct timespec *abstime);
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extern int glwthread_cond_signal (glwthread_cond_t *cond);
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extern int glwthread_cond_broadcast (glwthread_cond_t *cond);
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extern int glwthread_cond_destroy (glwthread_cond_t *cond);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _WINDOWS_COND_H */
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