1 // Copyright 2017 Google Inc. 2 // 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 // An interface for the filesystem that allows mocking the filesystem in 16 // unittests. 17 #ifndef CPU_FEATURES_INCLUDE_INTERNAL_FILESYSTEM_H_ 18 #define CPU_FEATURES_INCLUDE_INTERNAL_FILESYSTEM_H_ 19 20 #include <stddef.h> 21 #include <stdint.h> 22 #include "cpu_features_macros.h" 23 24 CPU_FEATURES_START_CPP_NAMESPACE 25 26 // Same as linux "open(filename, O_RDONLY)", retries automatically on EINTR. 27 int CpuFeatures_OpenFile(const char* filename); 28 29 // Same as linux "read(file_descriptor, buffer, buffer_size)", retries 30 // automatically on EINTR. 31 int CpuFeatures_ReadFile(int file_descriptor, void* buffer, size_t buffer_size); 32 33 // Same as linux "close(file_descriptor)". 34 void CpuFeatures_CloseFile(int file_descriptor); 35 36 CPU_FEATURES_END_CPP_NAMESPACE 37 38 #endif // CPU_FEATURES_INCLUDE_INTERNAL_FILESYSTEM_H_ 39