1 #ifndef _DEMUTEX_H 2 #define _DEMUTEX_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 Mutex class. 24 *//*--------------------------------------------------------------------*/ 25 26 #include "deDefs.h" 27 28 DE_BEGIN_EXTERN_C 29 30 typedef uintptr_t deMutex; 31 32 /*--------------------------------------------------------------------*//*! 33 * \brief Mutex attributes. 34 *//*--------------------------------------------------------------------*/ 35 typedef enum deMutexFlag_e 36 { 37 /** 38 * \brief Create recursive mutex. 39 * 40 * Recursive mutex can be locked multiple times from single thread 41 * and it is unlocked when lock count from owning thread reaches 42 * zero. 43 */ 44 DE_MUTEX_RECURSIVE = (1 << 0) 45 } deMutexFlag; 46 47 /*--------------------------------------------------------------------*//*! 48 * \brief Mutex attributes. 49 *//*--------------------------------------------------------------------*/ 50 typedef struct deMutexAttributes_s 51 { 52 uint32_t flags; 53 } deMutexAttributes; 54 55 deMutex deMutex_create(const deMutexAttributes *attributes); 56 void deMutex_destroy(deMutex mutex); 57 void deMutex_lock(deMutex mutex); 58 bool deMutex_tryLock(deMutex mutex); 59 void deMutex_unlock(deMutex mutex); 60 61 DE_END_EXTERN_C 62 63 #endif /* _DEMUTEX_H */ 64