1 /* 2 * Copyright (C) Texas Instruments - http://www.ti.com/ 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 19 #include <utils/Errors.h> 20 #include <semaphore.h> 21 #include <stdio.h> 22 #include <stdarg.h> 23 #include <stdlib.h> 24 #include <string.h> 25 #include <unistd.h> 26 27 #include "Status.h" 28 29 namespace Ti { 30 namespace Utils { 31 32 class Semaphore 33 { 34 public: 35 36 Semaphore(); 37 ~Semaphore(); 38 39 //Release semaphore 40 status_t Release(); 41 42 ///Create the semaphore with initial count value 43 status_t Create(int count=0); 44 45 ///Wait operation 46 status_t Wait(); 47 48 ///Signal operation 49 status_t Signal(); 50 51 ///Current semaphore count 52 int Count(); 53 54 ///Wait operation with a timeout 55 status_t WaitTimeout(int timeoutMicroSecs); 56 57 private: 58 sem_t *mSemaphore; 59 60 }; 61 62 } // namespace Utils 63 } // namespace Ti 64
