32bc0fcf69
Fixes -Wzero-as-null-pointer-constant warning. Test: m Bug: 68236239 Change-Id: I5b4123bc6709641315120a191e36cc57541349b2
307 lines
8.9 KiB
C++
307 lines
8.9 KiB
C++
/*
|
|
* 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 <inttypes.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, "we");
|
|
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, nullptr, _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_WITH_ARG(BM_stdio_fread, "AT_COMMON_SIZES");
|
|
|
|
void BM_stdio_fwrite(benchmark::State& state) {
|
|
ReadWriteTest(state, fwrite, true);
|
|
}
|
|
BIONIC_BENCHMARK_WITH_ARG(BM_stdio_fwrite, "AT_COMMON_SIZES");
|
|
|
|
void BM_stdio_fread_unbuffered(benchmark::State& state) {
|
|
ReadWriteTest(state, fread, false);
|
|
}
|
|
BIONIC_BENCHMARK_WITH_ARG(BM_stdio_fread_unbuffered, "AT_COMMON_SIZES");
|
|
|
|
void BM_stdio_fwrite_unbuffered(benchmark::State& state) {
|
|
ReadWriteTest(state, fwrite, false);
|
|
}
|
|
BIONIC_BENCHMARK_WITH_ARG(BM_stdio_fwrite_unbuffered, "AT_COMMON_SIZES");
|
|
|
|
#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_WITH_ARG(BM_stdio_fopen_fgetc_fclose_locking, "1024");
|
|
|
|
void BM_stdio_fopen_fgetc_fclose_no_locking(benchmark::State& state) {
|
|
FopenFgetcFclose(state, true);
|
|
}
|
|
BIONIC_BENCHMARK_WITH_ARG(BM_stdio_fopen_fgetc_fclose_no_locking, "1024");
|
|
|
|
static void BM_stdio_printf_literal(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
char buf[BUFSIZ];
|
|
snprintf(buf, sizeof(buf), "this is just a literal string with no format specifiers");
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_printf_literal);
|
|
|
|
static void BM_stdio_printf_s(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
char buf[BUFSIZ];
|
|
snprintf(buf, sizeof(buf), "this is a more typical error message with detail: %s",
|
|
"No such file or directory");
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_printf_s);
|
|
|
|
static void BM_stdio_printf_d(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
char buf[BUFSIZ];
|
|
snprintf(buf, sizeof(buf), "this is a more typical error message with detail: %d", 123456);
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_printf_d);
|
|
|
|
static void BM_stdio_printf_1$s(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
char buf[BUFSIZ];
|
|
snprintf(buf, sizeof(buf), "this is a more typical error message with detail: %1$s",
|
|
"No such file or directory");
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_printf_1$s);
|
|
|
|
static void BM_stdio_scanf_s(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
char s[BUFSIZ];
|
|
if (sscanf("file /etc/passwd", "file %s", s) != 1) abort();
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_scanf_s);
|
|
|
|
static void BM_stdio_scanf_d(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
int i;
|
|
if (sscanf("size 12345", "size %d", &i) != 1) abort();
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_scanf_d);
|
|
|
|
// Parsing maps is a common use of sscanf with a relatively complex format string.
|
|
static void BM_stdio_scanf_maps(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
uintptr_t start;
|
|
uintptr_t end;
|
|
uintptr_t offset;
|
|
char permissions[5];
|
|
int name_pos;
|
|
if (sscanf("6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so",
|
|
"%" PRIxPTR "-%" PRIxPTR " %4s %" PRIxPTR " %*x:%*x %*d %n",
|
|
&start, &end, permissions, &offset, &name_pos) != 4) abort();
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_scanf_maps);
|
|
|
|
// Hard-coded equivalent of the maps sscanf from libunwindstack/Maps.cpp for a baseline.
|
|
static int ParseMap(const char* line, const char* /*fmt*/, uintptr_t* start, uintptr_t* end,
|
|
char* permissions, uintptr_t* offset, int* name_pos) __attribute__((noinline)) {
|
|
char* str;
|
|
const char* old_str = line;
|
|
|
|
// "%" PRIxPTR "-"
|
|
*start = strtoul(old_str, &str, 16);
|
|
if (old_str == str || *str++ != '-') return 0;
|
|
|
|
// "%" PRIxPTR " "
|
|
old_str = str;
|
|
*end = strtoul(old_str, &str, 16);
|
|
if (old_str == str || !std::isspace(*str++)) return 0;
|
|
while (std::isspace(*str)) str++;
|
|
|
|
// "%4s "
|
|
if (*str == '\0') return 0;
|
|
permissions[0] = *str;
|
|
str++;
|
|
permissions[1] = *str;
|
|
str++;
|
|
permissions[2] = *str;
|
|
str++;
|
|
permissions[3] = *str;
|
|
str++;
|
|
permissions[4] = 0;
|
|
if (!std::isspace(*str++)) return 0;
|
|
|
|
// "%" PRIxPTR " "
|
|
old_str = str;
|
|
*offset = strtoul(old_str, &str, 16);
|
|
if (old_str == str || !std::isspace(*str)) return 0;
|
|
|
|
// "%*x:%*x "
|
|
old_str = str;
|
|
(void)strtoul(old_str, &str, 16);
|
|
if (old_str == str || *str++ != ':') return 0;
|
|
if (std::isspace(*str)) return 0;
|
|
old_str = str;
|
|
(void)strtoul(str, &str, 16);
|
|
if (old_str == str || !std::isspace(*str++)) return 0;
|
|
|
|
// "%*d "
|
|
old_str = str;
|
|
(void)strtoul(old_str, &str, 10);
|
|
if (old_str == str || (!std::isspace(*str) && *str != '\0')) return 0;
|
|
while (std::isspace(*str)) str++;
|
|
|
|
// "%n"
|
|
*name_pos = (str - line);
|
|
return 4;
|
|
}
|
|
|
|
static void BM_stdio_scanf_maps_baseline(benchmark::State& state) {
|
|
while (state.KeepRunning()) {
|
|
uintptr_t start;
|
|
uintptr_t end;
|
|
uintptr_t offset;
|
|
char permissions[5];
|
|
int name_pos;
|
|
if (ParseMap("6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /system/lib/libcomposer.so",
|
|
"%" PRIxPTR "-%" PRIxPTR " %4s %" PRIxPTR " %*x:%*x %*d %n",
|
|
&start, &end, permissions, &offset, &name_pos) != 4) abort();
|
|
}
|
|
}
|
|
BIONIC_BENCHMARK(BM_stdio_scanf_maps_baseline);
|