1 /* 2 * Copyright (C) 2011 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 FRAMEWORKS_EX_VARIABLESPEED_JNI_PROFILE_TIMER_H_ 18 #define FRAMEWORKS_EX_VARIABLESPEED_JNI_PROFILE_TIMER_H_ 19 20 #include <hlogging.h> 21 #include <time.h> 22 23 #include <string> 24 25 // Simple profiler for debugging method call duration. 26 class Timer { 27 public: Timer()28 Timer() : startTime_(clock()) { 29 } 30 ~Timer()31 virtual ~Timer() { 32 PrintElapsed("destructor"); 33 } 34 PrintElapsed(const char * message)35 void PrintElapsed(const char* message) { 36 clock_t endTime(clock()); 37 LOGD("Timer(%s): %d ms", message, 38 static_cast<int>((endTime - startTime_) * 1000 / CLOCKS_PER_SEC)); 39 } 40 GetElapsed()41 size_t GetElapsed() { 42 clock_t endTime(clock()); 43 return (endTime - startTime_) * 1000 / CLOCKS_PER_SEC; 44 } 45 46 private: 47 clock_t startTime_; 48 49 DISALLOW_COPY_AND_ASSIGN(Timer); 50 }; 51 52 #endif // FRAMEWORKS_EX_VARIABLESPEED_JNI_PROFILE_TIMER_H_ 53