102 lines
3.9 KiB
C++
102 lines
3.9 KiB
C++
/*
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* Copyright (C) 2019 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <spawn.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include <benchmark/benchmark.h>
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static std::string test_program(const char* name) {
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#if defined(__LP64__)
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return android::base::GetExecutableDirectory() + "/" + name + "64";
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#else
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return android::base::GetExecutableDirectory() + "/" + name + "32";
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#endif
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}
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extern char** environ;
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static void BM_spawn_test(benchmark::State& state, const char* const* argv) {
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for (auto _ : state) {
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pid_t child = 0;
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if (int spawn_err = posix_spawn(&child, argv[0], nullptr, nullptr, const_cast<char**>(argv),
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environ)) {
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state.SkipWithError(android::base::StringPrintf(
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"posix_spawn of %s failed: %s", argv[0], strerror(spawn_err)).c_str());
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break;
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}
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int wstatus = 0;
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const pid_t wait_result = TEMP_FAILURE_RETRY(waitpid(child, &wstatus, 0));
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if (wait_result != child) {
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state.SkipWithError(android::base::StringPrintf(
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"waitpid on pid %d for %s failed: %s",
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static_cast<int>(child), argv[0], strerror(errno)).c_str());
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break;
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}
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if (WIFEXITED(wstatus) && WEXITSTATUS(wstatus) == 127) {
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state.SkipWithError(android::base::StringPrintf("could not exec %s", argv[0]).c_str());
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break;
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}
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}
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}
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#define SPAWN_BENCHMARK(name, ...) \
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BENCHMARK_CAPTURE(BM_spawn_test, name, (const char*[]) { __VA_ARGS__, nullptr }) \
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->UseRealTime() \
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->Unit(benchmark::kMicrosecond) \
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SPAWN_BENCHMARK(noop, test_program("bench_noop").c_str());
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SPAWN_BENCHMARK(noop_nostl, test_program("bench_noop_nostl").c_str());
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SPAWN_BENCHMARK(noop_static, test_program("bench_noop_static").c_str());
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// Android has a /bin -> /system/bin symlink, but use /system/bin explicitly so we can more easily
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// compare Bionic-vs-glibc on a Linux desktop machine.
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#if defined(__GLIBC__)
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SPAWN_BENCHMARK(bin_true, "/bin/true");
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SPAWN_BENCHMARK(sh_true, "/bin/sh", "-c", "true");
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#elif defined(__ANDROID__)
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SPAWN_BENCHMARK(system_bin_true, "/system/bin/true");
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SPAWN_BENCHMARK(vendor_bin_true, "/vendor/bin/true");
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SPAWN_BENCHMARK(system_sh_true, "/system/bin/sh", "-c", "true");
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SPAWN_BENCHMARK(vendor_sh_true, "/vendor/bin/sh", "-c", "true");
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#endif
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BENCHMARK_MAIN();
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