1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 /** 17 * @addtogroup Ffrt 18 * @{ 19 * 20 * @brief ffrt provides APIs. 21 * 22 * 23 * @syscap SystemCapability.Resourceschedule.Ffrt.Core 24 * 25 * @since 10 26 */ 27 28 /** 29 * @file sleep.h 30 * 31 * @brief Declares the sleep and yield interfaces in C. 32 * 33 * @syscap SystemCapability.Resourceschedule.Ffrt.Core 34 * @since 10 35 * @version 1.0 36 */ 37 #ifndef FFRT_API_C_SLEEP_H 38 #define FFRT_API_C_SLEEP_H 39 #include <stdint.h> 40 #include "type_def.h" 41 42 /** 43 * @brief Suspends the calling thread for a given duration. 44 * 45 * @param usec Indicates the duration that the calling thread is suspended, in microseconds. 46 * @return Returns <b>ffrt_thrd_success</b> if the thread is suspended; 47 returns <b>ffrt_thrd_error</b> otherwise. 48 * @since 10 49 * @version 1.0 50 */ 51 FFRT_C_API int ffrt_usleep(uint64_t usec); 52 53 /** 54 * @brief Passes control to other tasks so that they can be executed. 55 * 56 * @since 10 57 * @version 1.0 58 */ 59 FFRT_C_API void ffrt_yield(void); 60 #endif 61