1 /* 2 * Copyright 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 __VTS_DRIVER_PROFILING_INTERFACE_H_ 18 #define __VTS_DRIVER_PROFILING_INTERFACE_H_ 19 20 #include <android-base/macros.h> 21 #include <google/protobuf/io/zero_copy_stream_impl.h> 22 #include <hidl/HidlSupport.h> 23 #include <utils/Condition.h> 24 #include <fstream> 25 26 #include "test/vts/proto/ComponentSpecificationMessage.pb.h" 27 28 using namespace std; 29 30 namespace android { 31 namespace vts { 32 33 // Library class to trace, record and profile a HIDL HAL implementation. 34 class VtsProfilingInterface { 35 public: 36 explicit VtsProfilingInterface(const string& trace_file_path); 37 38 virtual ~VtsProfilingInterface(); 39 40 // Get and create the VtsProfilingInterface singleton. 41 static VtsProfilingInterface& getInstance(const string& trace_file_path); 42 43 // returns true if the given message is added to the tracing queue. 44 void AddTraceEvent( 45 android::hardware::details::HidlInstrumentor::InstrumentationEvent event, 46 const char* package, const char* version, const char* interface, 47 const FunctionSpecificationMessage& message); 48 49 private: 50 // Internal method to get the corresponding trace file descriptor for a HAL 51 // with given package and version. 52 int GetTraceFile(const string& package, const string& version); 53 // Internal method to create a trace file based on the trace_file_path_prefix_ 54 // the given package and version, the device info and the current time. 55 int CreateTraceFile(const string& package, const string& version); 56 // Get the current time in nano seconds. 57 int64_t NanoTime(); 58 59 // Prefix of all trace files. 60 string trace_file_path_prefix_; // Prefix of the trace file. 61 62 // map between the HAL to the trace file description. 63 map<string, int> trace_map_; 64 Mutex mutex_; // Mutex used to synchronize the writing to the trace file. 65 66 DISALLOW_COPY_AND_ASSIGN(VtsProfilingInterface); 67 }; 68 69 } // namespace vts 70 } // namespace android 71 72 #endif // __VTS_DRIVER_PROFILING_INTERFACE_H_ 73