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Merge "Add benchmarks for strcpy and strcmp."

This commit is contained in:
Christopher Ferris 2017-06-16 16:40:01 +00:00 committed by Gerrit Code Review
parent ae837f2e59 1c487e1036
commit f0ee60a434
1 changed files with 30 additions and 0 deletions
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30
benchmarks/string_benchmark.cpp
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@ -173,3 +173,33 @@ static void BM_string_strcat_half_copy_half_seek(benchmark::State& state) {
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BENCHMARK(BM_string_strcat_half_copy_half_seek)->AT_COMMON_SIZES;
static void BM_string_strcpy(benchmark::State& state) {
const size_t nbytes = state.range(0);
std::vector<char> src(nbytes, 'x');
std::vector<char> dst(nbytes);
src[nbytes - 1] = '\0';
while (state.KeepRunning()) {
strcpy(dst.data(), src.data());
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BENCHMARK(BM_string_strcpy)->AT_COMMON_SIZES;
static void BM_string_strcmp(benchmark::State& state) {
const size_t nbytes = state.range(0);
std::vector<char> s1(nbytes, 'x');
std::vector<char> s2(nbytes, 'x');
s1[nbytes - 1] = '\0';
s2[nbytes - 1] = '\0';
volatile int c __attribute__((unused));
while (state.KeepRunning()) {
c = strcmp(s1.data(), s2.data());
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BENCHMARK(BM_string_strcmp)->AT_COMMON_SIZES;