Timing.h revision f35c939cd70f2815582d08902ade0b9abbee6bec 
1/*
2 * Copyright (C) 2013 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 ANDROID_HWUI_TIMING_H
18#define ANDROID_HWUI_TIMING_H
19
20#include <sys/time.h>
21
22#define TIME_METHOD() MethodTimer __method_timer(__func__)
23class MethodTimer {
24public:
25    explicit MethodTimer(const char* name)
26            : mMethodName(name) {
27        gettimeofday(&mStart, nullptr);
28    }
29
30    ~MethodTimer() {
31        struct timeval stop;
32        gettimeofday(&stop, nullptr);
33        long long elapsed = (stop.tv_sec * 1000000) - (mStart.tv_sec * 1000000)
34                + (stop.tv_usec - mStart.tv_usec);
35        ALOGD("%s took %.2fms", mMethodName, elapsed / 1000.0);
36    }
37private:
38    const char* mMethodName;
39    struct timeval mStart;
40};
41
42#endif
43