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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <err.h>
#include <stdint.h>
#include <string.h>
#include <benchmark/benchmark.h>
#include <util.h>
static void BM_string_memcmp(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t src_alignment = state.range(1);
const size_t dst_alignment = state.range(2);
std::vector<char> src;
std::vector<char> dst;
char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, nbytes, 'x');
char* dst_aligned = GetAlignedPtrFilled(&dst, dst_alignment, nbytes, 'x');
while (state.KeepRunning()) {
benchmark::DoNotOptimize(memcmp(dst_aligned, src_aligned, nbytes));
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_memcmp, "AT_ALIGNED_TWOBUF");
static void BM_string_memcpy(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t src_alignment = state.range(1);
const size_t dst_alignment = state.range(2);
std::vector<char> src;
std::vector<char> dst;
char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, nbytes, 'x');
char* dst_aligned = GetAlignedPtr(&dst, dst_alignment, nbytes);
while (state.KeepRunning()) {
memcpy(dst_aligned, src_aligned, nbytes);
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_memcpy, "AT_ALIGNED_TWOBUF");
static void BM_string_memmove_non_overlapping(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t src_alignment = state.range(1);
const size_t dst_alignment = state.range(2);
std::vector<char> src;
std::vector<char> dst;
char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, nbytes, 'x');
char* dst_aligned = GetAlignedPtrFilled(&dst, dst_alignment, nbytes, 'y');
while (state.KeepRunning()) {
memmove(dst_aligned, src_aligned, nbytes);
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_memmove_non_overlapping, "AT_ALIGNED_TWOBUF");
static void BM_string_memmove_overlap_dst_before_src(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t alignment = state.range(1);
std::vector<char> buf(3 * alignment + nbytes + 1, 'x');
char* buf_aligned = GetAlignedPtrFilled(&buf, alignment, nbytes + 1, 'x');
while (state.KeepRunning()) {
memmove(buf_aligned, buf_aligned + 1, nbytes); // Worst-case overlap.
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_memmove_overlap_dst_before_src, "AT_ALIGNED_ONEBUF");
static void BM_string_memmove_overlap_src_before_dst(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t alignment = state.range(1);
std::vector<char> buf;
char* buf_aligned = GetAlignedPtrFilled(&buf, alignment, nbytes + 1, 'x');
while (state.KeepRunning()) {
memmove(buf_aligned + 1, buf_aligned, nbytes); // Worst-case overlap.
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_memmove_overlap_src_before_dst, "AT_ALIGNED_ONEBUF");
static void BM_string_memset(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t alignment = state.range(1);
std::vector<char> buf;
char* buf_aligned = GetAlignedPtr(&buf, alignment, nbytes + 1);
while (state.KeepRunning()) {
memset(buf_aligned, 0, nbytes);
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_memset, "AT_ALIGNED_ONEBUF");
static void BM_string_strlen(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t alignment = state.range(1);
std::vector<char> buf;
char* buf_aligned = GetAlignedPtrFilled(&buf, alignment, nbytes + 1, 'x');
buf_aligned[nbytes - 1] = '\0';
while (state.KeepRunning()) {
benchmark::DoNotOptimize(strlen(buf_aligned));
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strlen, "AT_ALIGNED_ONEBUF");
static void BM_string_strcat_copy_only(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t src_alignment = state.range(1);
const size_t dst_alignment = state.range(2);
std::vector<char> src;
std::vector<char> dst;
char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, nbytes, 'x');
char* dst_aligned = GetAlignedPtr(&dst, dst_alignment, nbytes + 2);
src_aligned[nbytes - 1] = '\0';
dst_aligned[0] = 'y';
dst_aligned[1] = 'y';
dst_aligned[2] = '\0';
while (state.KeepRunning()) {
strcat(dst_aligned, src_aligned);
dst_aligned[2] = '\0';
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strcat_copy_only, "AT_ALIGNED_TWOBUF");
static void BM_string_strcat_seek_only(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t src_alignment = state.range(1);
const size_t dst_alignment = state.range(2);
std::vector<char> src;
std::vector<char> dst;
char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, 3, 'x');
char* dst_aligned = GetAlignedPtrFilled(&dst, dst_alignment, nbytes + 2, 'y');
src_aligned[2] = '\0';
dst_aligned[nbytes - 1] = '\0';
while (state.KeepRunning()) {
strcat(dst_aligned, src_aligned);
dst_aligned[nbytes - 1] = '\0';
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strcat_seek_only, "AT_ALIGNED_TWOBUF");
static void BM_string_strcat_half_copy_half_seek(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t src_alignment = state.range(1);
const size_t dst_alignment = state.range(2);
// Skip sizes that don't make sense.
if ((nbytes / 2) == 0) {
return;
}
std::vector<char> src;
std::vector<char> dst;
char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, nbytes / 2, 'x');
char* dst_aligned = GetAlignedPtrFilled(&dst, dst_alignment, nbytes, 'y');
src_aligned[nbytes / 2 - 1] = '\0';
dst_aligned[nbytes / 2 - 1] = '\0';
while (state.KeepRunning()) {
strcat(dst_aligned, src_aligned);
dst_aligned[nbytes / 2 - 1] = '\0';
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strcat_half_copy_half_seek, "AT_ALIGNED_TWOBUF");
static void BM_string_strcpy(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t src_alignment = state.range(1);
const size_t dst_alignment = state.range(2);
std::vector<char> src;
std::vector<char> dst;
char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, nbytes, 'x');
char* dst_aligned = GetAlignedPtr(&dst, dst_alignment, nbytes);
src_aligned[nbytes - 1] = '\0';
while (state.KeepRunning()) {
strcpy(dst_aligned, src_aligned);
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strcpy, "AT_ALIGNED_TWOBUF");
static void BM_string_strcmp(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t s1_alignment = state.range(1);
const size_t s2_alignment = state.range(2);
std::vector<char> s1;
std::vector<char> s2;
char* s1_aligned = GetAlignedPtrFilled(&s1, s1_alignment, nbytes, 'x');
char* s2_aligned = GetAlignedPtrFilled(&s2, s2_alignment, nbytes, 'x');
s1_aligned[nbytes - 1] = '\0';
s2_aligned[nbytes - 1] = '\0';
while (state.KeepRunning()) {
benchmark::DoNotOptimize(strcmp(s1_aligned, s2_aligned));
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strcmp, "AT_ALIGNED_TWOBUF");
static void BM_string_strncmp(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t s1_alignment = state.range(1);
const size_t s2_alignment = state.range(2);
std::vector<char> s1;
std::vector<char> s2;
char* s1_aligned = GetAlignedPtrFilled(&s1, s1_alignment, nbytes, 'x');
char* s2_aligned = GetAlignedPtrFilled(&s2, s2_alignment, nbytes, 'x');
for (auto _ : state) {
benchmark::DoNotOptimize(strncmp(s1_aligned, s2_aligned, nbytes));
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strncmp, "AT_ALIGNED_TWOBUF");
static void BM_string_strstr(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t haystack_alignment = state.range(1);
const size_t needle_alignment = state.range(2);
std::vector<char> haystack;
std::vector<char> needle;
char* haystack_aligned = GetAlignedPtrFilled(&haystack, haystack_alignment, nbytes, 'x');
char* needle_aligned = GetAlignedPtrFilled(&needle, needle_alignment,
std::min(nbytes, static_cast<size_t>(5)), 'x');
if (nbytes / 4 > 2) {
for (size_t i = 0; nbytes / 4 >= 2 && i < nbytes / 4 - 2; i++) {
haystack_aligned[4 * i + 3] = 'y';
}
}
haystack_aligned[nbytes - 1] = '\0';
needle_aligned[needle.size() - 1] = '\0';
while (state.KeepRunning()) {
if (strstr(haystack_aligned, needle_aligned) == nullptr) {
errx(1, "ERROR: strstr failed to find valid substring.");
}
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strstr, "AT_ALIGNED_TWOBUF");
static void BM_string_strchr(benchmark::State& state) {
const size_t nbytes = state.range(0);
const size_t haystack_alignment = state.range(1);
std::vector<char> haystack;
char* haystack_aligned = GetAlignedPtrFilled(&haystack, haystack_alignment, nbytes, 'x');
haystack_aligned[nbytes-1] = '\0';
while (state.KeepRunning()) {
if (strchr(haystack_aligned, 'y') != nullptr) {
errx(1, "ERROR: strchr found a chr where it should have failed.");
}
}
state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes));
}
BIONIC_BENCHMARK_WITH_ARG(BM_string_strchr, "AT_ALIGNED_ONEBUF");
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