1 #ifndef _DESEMAPHORE_H
2 #define _DESEMAPHORE_H
3 /*-------------------------------------------------------------------------
4  * drawElements Thread Library
5  * ---------------------------
6  *
7  * Copyright 2014 The Android Open Source Project
8  *
9  * Licensed under the Apache License, Version 2.0 (the "License");
10  * you may not use this file except in compliance with the License.
11  * You may obtain a copy of the License at
12  *
13  *      http://www.apache.org/licenses/LICENSE-2.0
14  *
15  * Unless required by applicable law or agreed to in writing, software
16  * distributed under the License is distributed on an "AS IS" BASIS,
17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18  * See the License for the specific language governing permissions and
19  * limitations under the License.
20  *
21  *//*!
22  * \file
23  * \brief Semaphore class.
24  *//*--------------------------------------------------------------------*/
25 
26 #include "deDefs.h"
27 
28 DE_BEGIN_EXTERN_C
29 
30 /* Semaphore type. */
31 typedef deUintptr		deSemaphore;
32 
33 /*--------------------------------------------------------------------*//*!
34  * \brief Semaphore attributes.
35  *//*--------------------------------------------------------------------*/
36 typedef struct deSemaphoreAttributes_s
37 {
38 	deUint32		flags;
39 } deSemaphoreAttributes;
40 
41 deSemaphore		deSemaphore_create			(int initialValue, const deSemaphoreAttributes* attributes);
42 void			deSemaphore_destroy			(deSemaphore semaphore);
43 
44 void			deSemaphore_increment		(deSemaphore semaphore);
45 void			deSemaphore_decrement		(deSemaphore semaphore);
46 
47 deBool			deSemaphore_tryDecrement	(deSemaphore semaphore);
48 
49 DE_END_EXTERN_C
50 
51 #endif /* _DESEMAPHORE_H */
52