28 lines
842 B
C++
28 lines
842 B
C++
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#include "examples/procmon/plot.h"
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#include "muduo/base/Timestamp.h"
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#include <vector>
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#include <math.h>
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#include <stdio.h>
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int main()
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{
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std::vector<double> cpu_usage;
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cpu_usage.reserve(300);
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for (int i = 0; i < 300; ++i)
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cpu_usage.push_back(1.0 + sin(pow(i / 30.0, 2)));
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Plot plot(640, 100, 600, 2);
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muduo::Timestamp start(muduo::Timestamp::now());
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const int N = 10000;
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for (int i = 0; i < N; ++i)
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muduo::string png = plot.plotCpu(cpu_usage);
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double elapsed = timeDifference(muduo::Timestamp::now(), start);
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printf("%d plots in %f seconds, %f PNG per second, %f ms per PNG\n",
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N, elapsed, N / elapsed, elapsed * 1000 / N);
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muduo::string png = plot.plotCpu(cpu_usage);
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FILE* fp = fopen("test.png", "wb");
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fwrite(png.data(), 1, png.size(), fp);
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fclose(fp);
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printf("Image saved to test.png\n");
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}
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