1 /* 2 * Copyright 2018 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 #pragma once 18 19 #include <cstdint> 20 21 // Enable thread safety attributes only with clang. 22 // The attributes can be safely erased when compiling with other compilers. 23 #if defined(__clang__) && (!defined(SWIG)) 24 #define THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x)) 25 #else 26 #define THREAD_ANNOTATION_ATTRIBUTE__(x) // no-op 27 #endif 28 29 #define GUARDED_BY(x) \ 30 THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x)) 31 32 #define REQUIRES(...) \ 33 THREAD_ANNOTATION_ATTRIBUTE__(requires_capability(__VA_ARGS__)) 34 35 namespace samples { 36 37 enum class Affinity { 38 None, 39 Even, 40 Odd 41 }; 42 43 int32_t getNumCpus(); 44 45 void setAffinity(int32_t cpu); 46 47 void setAffinity(Affinity affinity); 48 49 } 50