[pixkit timer] Tool for evaluating execution time - yunfuliu/pixkit GitHub Wiki

Timer

Tool for evaluating execution time.

C++: class Timer{};

Member functions:

• void Start() - Start to count execution time.
• void Stop() - Stop to count execution time.
• void Reset() - Reset all the settings.
• bool Report() - Report current status.
• bool StopAndReport() - Stop to count execution time and report current status.
• float TimeInSeconds() - Return cumulative execution time.
• float AvgTime() - Return average execution time.

Example 1:

pixkit::Timer tmr1("c1");
for(int i=0;i<5;i++){
    tmr1.Start();
    func();
    tmr1.StopAndReport();
}
/////////////////////////
// output
[c1] CumuTime: 0.0349389s, #run:    1, AvgTime: 0.0349389s
[c1] CumuTime: 0.0566038s, #run:    2, AvgTime: 0.0283019s
[c1] CumuTime: 0.0779796s, #run:    3, AvgTime: 0.0259932s
[c1] CumuTime: 0.0995171s, #run:    4, AvgTime: 0.0248793s
[c1] CumuTime: 0.121104s, #run:    5, AvgTime: 0.0242207s

Example 2:

for(int i=0;i<5;i++){
    static pixkit::Timer tmr2("c2");
    tmr2.Start();
    func();
    tmr2.Stop();
    tmr2.Report();
}
/////////////////////////
// output
[c2] CumuTime: 0.0213429s, #run:    1, AvgTime: 0.0213429s
[c2] CumuTime: 0.0428791s, #run:    2, AvgTime: 0.0214395s
[c2] CumuTime: 0.0644379s, #run:    3, AvgTime: 0.0214793s
[c2] CumuTime: 0.0858289s, #run:    4, AvgTime: 0.0214572s
[c2] CumuTime: 0.107342s, #run:    5, AvgTime: 0.0214683s

Example 3:

pixkit::Timer tmr3("c3");
tmr3.Start();
func1();
tmr3.StopAndReport();
tmr3.Reset();
tmr3.Start();
func2();
tmr3.StopAndReport();
/////////////////////////
// output
[c3] CumuTime: 0.021593s, #run:    1, AvgTime: 0.021593s
[c3] CumuTime: 0.0429455s, #run:    1, AvgTime: 0.0429455s