semaphore.h

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/*
 * Copyright (c) 2008-2009 Apple Inc. All rights reserved.
 *
 * @APPLE_APACHE_LICENSE_HEADER_START@
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * @APPLE_APACHE_LICENSE_HEADER_END@
 */

#ifndef __DISPATCH_SEMAPHORE__
#define __DISPATCH_SEMAPHORE__

#ifndef __DISPATCH_INDIRECT__
#error "Please #include <dispatch/dispatch.h> instead of this file directly."
#include <dispatch/base.h> // for HeaderDoc
#endif

DISPATCH_DECL(dispatch_semaphore);

__DISPATCH_BEGIN_DECLS

DISPATCH_EXPORT  
dispatch_semaphore_t
dispatch_semaphore_create(long value);

DISPATCH_EXPORT  
long
dispatch_semaphore_wait(dispatch_semaphore_t dsema, dispatch_time_t timeout);

DISPATCH_EXPORT  
long
dispatch_semaphore_signal(dispatch_semaphore_t dsema);

__DISPATCH_END_DECLS

#endif /* __DISPATCH_SEMAPHORE__ */