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      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_MEASUREMENT_H__
     18 #define __VTS_MEASUREMENT_H__
     19 
     20 #if USE_CTIME
     21 #include <time.h>
     22 #else
     23 #include <sys/time.h>
     24 #endif
     25 
     26 #include <vector>
     27 
     28 using namespace std;
     29 
     30 namespace android {
     31 namespace vts {
     32 
     33 // Class to do measurements before and after calling a target function.
     34 class VtsMeasurement {
     35  public:
     36   VtsMeasurement() {}
     37 
     38   // Starts the measurement
     39   void Start();
     40 
     41   // Stops the measurement and returns the measured values.
     42   vector<float>* Stop();
     43 
     44  private:
     45 // data structure to keep the start time.
     46 #if USE_CTIME
     47   struct timeval tv_;
     48 #else
     49   timespec ts_;
     50 #endif
     51 };
     52 
     53 }  // namespace vts
     54 }  // namespace android
     55 
     56 #endif
     57