folly库之Benchmark.h

#include <folly/Benchmark.h>
#include <folly/container/Foreach.h>
#include <vector>
using namespace std;
using namespace folly;
BENCHMARK(insertFrontVectorX) {
    // Let‘s insert 100 elements at the front of a vector
    vector<int> v;
    FOR_EACH_RANGE (i, 0, 100) {
        v.insert(v.begin(), i);
    }
}
BENCHMARK_RELATIVE(insertBackVector_0) {
    // Let‘s insert 100 elements at the back of a vector
    vector<int> v;
    FOR_EACH_RANGE (i, 0, 100) {
        v.insert(v.end(), i);
    }
}
BENCHMARK_RELATIVE(insertBackVector_1) {
    // Let‘s insert 100 elements at the back of a vector
    vector<int> v;
    FOR_EACH_RANGE (i, 0, 100) {
        v.insert(v.end(), i);
    }
}
int main() {
    runBenchmarks();
}