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/*
* Copyright (C) 2014 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 <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <android-base/test_utils.h>
#include <benchmark/benchmark.h>
#include "util.h"
static void FillFile(TemporaryFile& tf) {
char line[256];
memset(line, 'x', sizeof(line));
line[sizeof(line) - 1] = '\0';
FILE* fp = fopen(tf.path, "w");
for (size_t i = 0; i < 4096; ++i) fputs(line, fp);
fclose(fp);
}
template <typename Fn>
void ReadWriteTest(benchmark::State& state, Fn f, bool buffered) {
size_t chunk_size = state.range(0);
FILE* fp = fopen("/dev/zero", "r+e");
__fsetlocking(fp, FSETLOCKING_BYCALLER);
char* buf = new char[chunk_size];
if (!buffered) {
setvbuf(fp, 0, _IONBF, 0);
}
while (state.KeepRunning()) {
if (f(buf, chunk_size, 1, fp) != 1) {
errx(1, "ERROR: op of %zu bytes failed.", chunk_size);
}
}
state.SetBytesProcessed(int64_t(state.iterations()) * int64_t(chunk_size));
delete[] buf;
fclose(fp);
}
void BM_stdio_fread(benchmark::State& state) {
ReadWriteTest(state, fread, true);
}
BIONIC_BENCHMARK(BM_stdio_fread);
void BM_stdio_fwrite(benchmark::State& state) {
ReadWriteTest(state, fwrite, true);
}
BIONIC_BENCHMARK(BM_stdio_fwrite);
void BM_stdio_fread_unbuffered(benchmark::State& state) {
ReadWriteTest(state, fread, false);
}
BIONIC_BENCHMARK(BM_stdio_fread_unbuffered);
void BM_stdio_fwrite_unbuffered(benchmark::State& state) {
ReadWriteTest(state, fwrite, false);
}
BIONIC_BENCHMARK(BM_stdio_fwrite_unbuffered);
#if !defined(__GLIBC__)
static void FopenFgetlnFclose(benchmark::State& state, bool no_locking) {
TemporaryFile tf;
FillFile(tf);
while (state.KeepRunning()) {
FILE* fp = fopen(tf.path, "re");
if (no_locking) __fsetlocking(fp, FSETLOCKING_BYCALLER);
size_t length;
while (fgetln(fp, &length) != nullptr) {
}
fclose(fp);
}
}
static void BM_stdio_fopen_fgetln_fclose_locking(benchmark::State& state) {
FopenFgetlnFclose(state, false);
}
BIONIC_BENCHMARK(BM_stdio_fopen_fgetln_fclose_locking);
void BM_stdio_fopen_fgetln_fclose_no_locking(benchmark::State& state) {
FopenFgetlnFclose(state, true);
}
BIONIC_BENCHMARK(BM_stdio_fopen_fgetln_fclose_no_locking);
#endif
static void FopenFgetsFclose(benchmark::State& state, bool no_locking) {
TemporaryFile tf;
FillFile(tf);
char buf[BUFSIZ];
while (state.KeepRunning()) {
FILE* fp = fopen(tf.path, "re");
if (no_locking) __fsetlocking(fp, FSETLOCKING_BYCALLER);
while (fgets(buf, sizeof(buf), fp) != nullptr) {
}
fclose(fp);
}
}
static void BM_stdio_fopen_fgets_fclose_locking(benchmark::State& state) {
FopenFgetsFclose(state, false);
}
BIONIC_BENCHMARK(BM_stdio_fopen_fgets_fclose_locking);
void BM_stdio_fopen_fgets_fclose_no_locking(benchmark::State& state) {
FopenFgetsFclose(state, true);
}
BIONIC_BENCHMARK(BM_stdio_fopen_fgets_fclose_no_locking);
static void FopenGetlineFclose(benchmark::State& state, bool no_locking) {
TemporaryFile tf;
FillFile(tf);
while (state.KeepRunning()) {
FILE* fp = fopen(tf.path, "re");
if (no_locking) __fsetlocking(fp, FSETLOCKING_BYCALLER);
char* line = nullptr;
size_t n = 0;
while (getline(&line, &n, fp) != -1) {
}
free(line);
fclose(fp);
}
}
static void BM_stdio_fopen_getline_fclose_locking(benchmark::State& state) {
FopenGetlineFclose(state, false);
}
BIONIC_BENCHMARK(BM_stdio_fopen_getline_fclose_locking);
void BM_stdio_fopen_getline_fclose_no_locking(benchmark::State& state) {
FopenGetlineFclose(state, true);
}
BIONIC_BENCHMARK(BM_stdio_fopen_getline_fclose_no_locking);
static void FopenFgetcFclose(benchmark::State& state, bool no_locking) {
size_t nbytes = state.range(0);
while (state.KeepRunning()) {
FILE* fp = fopen("/dev/zero", "re");
if (no_locking) __fsetlocking(fp, FSETLOCKING_BYCALLER);
volatile int c __attribute__((unused));
for (size_t i = 0; i < nbytes; ++i) {
c = fgetc(fp);
}
fclose(fp);
}
}
static void BM_stdio_fopen_fgetc_fclose_locking(benchmark::State& state) {
FopenFgetcFclose(state, false);
}
BIONIC_BENCHMARK(BM_stdio_fopen_fgetc_fclose_locking);
void BM_stdio_fopen_fgetc_fclose_no_locking(benchmark::State& state) {
FopenFgetcFclose(state, true);
}
BIONIC_BENCHMARK(BM_stdio_fopen_fgetc_fclose_no_locking);
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