1 /* 2 * Copyright (C) 2016 The Android Open Source Project 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 #ifndef ANDROID_AUDIO_CLOCK_NANOSLEEP_H 18 #define ANDROID_AUDIO_CLOCK_NANOSLEEP_H 19 20 #include <time.h> 21 #include <unistd.h> 22 23 #ifdef __linux__ 24 25 #include <sys/syscall.h> 26 #ifdef __ANDROID__ 27 // bionic for Android provides clock_nanosleep 28 #define audio_utils_clock_nanosleep clock_nanosleep 29 #else 30 // bionic for desktop Linux omits clock_nanosleep 31 static inline 32 int audio_utils_clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *request, 33 struct timespec *remain) 34 { 35 return syscall(SYS_clock_nanosleep, clock_id, flags, request, remain); 36 } 37 #endif // __ANDROID__ 38 39 #else // __linux__ 40 41 // macOS <10.12 doesn't have clockid_t / CLOCK_MONOTONIC 42 #ifndef CLOCK_MONOTONIC 43 typedef int clockid_t; 44 #define CLOCK_MONOTONIC 0 45 #endif 46 // macOS doesn't have clock_nanosleep 47 static inline 48 int audio_utils_clock_nanosleep(clockid_t clock_id, int flags, const struct timespec *request, 49 struct timespec *remain) 50 { 51 (void) clock_id; 52 (void) flags; 53 (void) request; 54 (void) remain; 55 errno = ENOSYS; 56 return -1; 57 } 58 59 #endif // __linux__ 60 61 #endif // !ANDROID_AUDIO_CLOCK_NANOSLEEP_H 62
