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tdlib-fork/benchmark/bench_misc.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/utils/benchmark.h"
#include "td/utils/common.h"
#include "td/utils/logging.h"
#include "td/utils/port/Clocks.h"
#include "td/utils/port/EventFd.h"
#include "td/utils/port/FileFd.h"
#include "td/utils/port/path.h"
#include "td/utils/port/RwMutex.h"
#include "td/utils/port/Stat.h"
#include "td/utils/port/thread.h"
#include "td/utils/Slice.h"
#include "td/telegram/telegram_api.h"
#include "td/telegram/telegram_api.hpp"
#if !TD_WINDOWS
#include <unistd.h>
#include <utime.h>
#endif
#if TD_LINUX || TD_ANDROID || TD_TIZEN
#include <semaphore.h>
#endif
#include <atomic>
#include <cstdint>
namespace td {
class F {
uint32 &sum;
public:
explicit F(uint32 &sum) : sum(sum) {
}
template <class T>
void operator()(const T &x) const {
sum += static_cast<uint32>(x.get_id());
}
};
BENCH(Call, "TL Call") {
tl_object_ptr<telegram_api::Function> x = make_tl_object<telegram_api::account_getWallPapers>(0);
uint32 res = 0;
F f(res);
for (int i = 0; i < n; i++) {
downcast_call(*x, f);
}
do_not_optimize_away(res);
}
#if !TD_EVENTFD_UNSUPPORTED
BENCH(EventFd, "EventFd") {
EventFd fd;
fd.init();
for (int i = 0; i < n; i++) {
fd.release();
fd.acquire();
}
fd.close();
}
#endif
BENCH(NewInt, "new int + delete") {
std::uintptr_t res = 0;
for (int i = 0; i < n; i++) {
int *x = new int;
res += reinterpret_cast<std::uintptr_t>(x);
delete x;
}
do_not_optimize_away(res);
}
BENCH(NewObj, "new struct, then delete") {
struct A {
int32 a = 0;
int32 b = 0;
int32 c = 0;
int32 d = 0;
};
std::uintptr_t res = 0;
A **ptr = new A *[n];
for (int i = 0; i < n; i++) {
ptr[i] = new A();
res += reinterpret_cast<std::uintptr_t>(ptr[i]);
}
for (int i = 0; i < n; i++) {
delete ptr[i];
}
delete[] ptr;
do_not_optimize_away(res);
}
#if !TD_THREAD_UNSUPPORTED
BENCH(ThreadNew, "new struct, then delete in several threads") {
td::NewObjBench a, b;
thread ta([&] { a.run(n / 2); });
thread tb([&] { b.run(n - n / 2); });
ta.join();
tb.join();
}
#endif
/*
// Too hard for clang (?)
BENCH(Time, "Clocks::monotonic") {
double res = 0;
for (int i = 0; i < n; i++) {
res += Clocks::monotonic();
}
do_not_optimize_away(res);
}
*/
#if !TD_WINDOWS
class PipeBench : public Benchmark {
public:
int p[2];
string get_description() const override {
return "pipe write + read int32";
}
void start_up() override {
int res = pipe(p);
CHECK(res == 0);
}
void run(int n) override {
int res = 0;
for (int i = 0; i < n; i++) {
int val = 1;
auto write_len = write(p[1], &val, sizeof(val));
CHECK(write_len == sizeof(val));
auto read_len = read(p[0], &val, sizeof(val));
CHECK(read_len == sizeof(val));
res += val;
}
do_not_optimize_away(res);
}
void tear_down() override {
close(p[0]);
close(p[1]);
}
};
#endif
#if TD_LINUX || TD_ANDROID || TD_TIZEN
class SemBench : public Benchmark {
sem_t sem;
public:
string get_description() const override {
return "sem post + wait";
}
void start_up() override {
int err = sem_init(&sem, 0, 0);
CHECK(err != -1);
}
void run(int n) override {
for (int i = 0; i < n; i++) {
sem_post(&sem);
sem_wait(&sem);
}
}
void tear_down() override {
sem_destroy(&sem);
}
};
#endif
#if !TD_WINDOWS
class UtimeBench : public Benchmark {
public:
void start_up() override {
FileFd::open("test", FileFd::Flags::Create | FileFd::Flags::Write).move_as_ok().close();
}
string get_description() const override {
return "utime";
}
void run(int n) override {
for (int i = 0; i < n; i++) {
int err = utime("test", nullptr);
CHECK(err >= 0);
utimbuf buf;
buf.modtime = 123;
buf.actime = 321;
err = utime("test", &buf);
CHECK(err >= 0);
}
}
};
#endif
BENCH(Pwrite, "pwrite") {
auto fd = FileFd::open("test", FileFd::Flags::Create | FileFd::Flags::Write).move_as_ok();
for (int i = 0; i < n; i++) {
fd.pwrite("a", 0).ok();
}
fd.close();
}
class CreateFileBench : public Benchmark {
string get_description() const override {
return "create_file";
}
void start_up() override {
mkdir("A").ensure();
}
void run(int n) override {
for (int i = 0; i < n; i++) {
FileFd::open(PSLICE() << "A/" << i, FileFd::Flags::Write | FileFd::Flags::Create).move_as_ok().close();
}
}
void tear_down() override {
td::walk_path("A/", [&](CSlice path, auto type) {
if (type == td::WalkPath::Type::ExitDir) {
rmdir(path).ignore();
} else if (type == td::WalkPath::Type::NotDir) {
unlink(path).ignore();
}
}).ignore();
}
};
class WalkPathBench : public Benchmark {
string get_description() const override {
return "walk_path";
}
void start_up_n(int n) override {
mkdir("A").ensure();
for (int i = 0; i < n; i++) {
FileFd::open(PSLICE() << "A/" << i, FileFd::Flags::Write | FileFd::Flags::Create).move_as_ok().close();
}
}
void run(int n) override {
int cnt = 0;
td::walk_path("A/", [&](CSlice path, auto type) {
if (type == td::WalkPath::Type::EnterDir) {
return;
}
stat(path).ok();
cnt++;
}).ignore();
}
void tear_down() override {
td::walk_path("A/", [&](CSlice path, auto type) {
if (type == td::WalkPath::Type::ExitDir) {
rmdir(path).ignore();
} else if (type == td::WalkPath::Type::NotDir) {
unlink(path).ignore();
}
}).ignore();
}
};
#if !TD_THREAD_UNSUPPORTED
template <int ThreadN = 2>
class AtomicReleaseIncBench : public Benchmark {
string get_description() const override {
return PSTRING() << "AtomicReleaseInc" << ThreadN;
}
static std::atomic<uint64> a_;
void run(int n) override {
std::vector<thread> threads;
for (int i = 0; i < ThreadN; i++) {
threads.emplace_back([&] {
for (int i = 0; i < n / ThreadN; i++) {
a_.fetch_add(1, std::memory_order_release);
}
});
}
for (auto &thread : threads) {
thread.join();
}
}
};
template <int ThreadN>
std::atomic<uint64> AtomicReleaseIncBench<ThreadN>::a_;
template <int ThreadN = 2>
class AtomicReleaseCasIncBench : public Benchmark {
string get_description() const override {
return PSTRING() << "AtomicReleaseCasInc" << ThreadN;
}
static std::atomic<uint64> a_;
void run(int n) override {
std::vector<thread> threads;
for (int i = 0; i < ThreadN; i++) {
threads.emplace_back([&] {
for (int i = 0; i < n / ThreadN; i++) {
auto value = a_.load(std::memory_order_relaxed);
while (!a_.compare_exchange_strong(value, value + 1, std::memory_order_release, std::memory_order_relaxed)) {
}
}
});
}
for (auto &thread : threads) {
thread.join();
}
}
};
template <int ThreadN>
std::atomic<uint64> AtomicReleaseCasIncBench<ThreadN>::a_;
template <int ThreadN = 2>
class RwMutexReadBench : public Benchmark {
string get_description() const override {
return PSTRING() << "RwMutexRead" << ThreadN;
}
RwMutex mutex_;
void run(int n) override {
std::vector<thread> threads;
for (int i = 0; i < ThreadN; i++) {
threads.emplace_back([&] {
for (int i = 0; i < n / ThreadN; i++) {
mutex_.lock_read().ensure();
}
});
}
for (auto &thread : threads) {
thread.join();
}
}
};
template <int ThreadN = 2>
class RwMutexWriteBench : public Benchmark {
string get_description() const override {
return PSTRING() << "RwMutexWrite" << ThreadN;
}
RwMutex mutex_;
void run(int n) override {
std::vector<thread> threads;
for (int i = 0; i < ThreadN; i++) {
threads.emplace_back([&] {
for (int i = 0; i < n / ThreadN; i++) {
mutex_.lock_write().ensure();
}
});
}
for (auto &thread : threads) {
thread.join();
}
}
};
#endif
} // namespace td
int main() {
SET_VERBOSITY_LEVEL(VERBOSITY_NAME(DEBUG));
#if !TD_THREAD_UNSUPPORTED
td::bench(td::AtomicReleaseIncBench<1>());
td::bench(td::AtomicReleaseIncBench<2>());
td::bench(td::AtomicReleaseCasIncBench<1>());
td::bench(td::AtomicReleaseCasIncBench<2>());
td::bench(td::RwMutexWriteBench<1>());
td::bench(td::RwMutexReadBench<1>());
td::bench(td::RwMutexWriteBench<>());
td::bench(td::RwMutexReadBench<>());
#endif
#if !TD_WINDOWS
td::bench(td::UtimeBench());
#endif
td::bench(td::WalkPathBench());
td::bench(td::CreateFileBench());
td::bench(td::PwriteBench());
td::bench(td::CallBench());
#if !TD_THREAD_UNSUPPORTED
td::bench(td::ThreadNewBench());
#endif
#if !TD_EVENTFD_UNSUPPORTED
td::bench(td::EventFdBench());
#endif
td::bench(td::NewObjBench());
td::bench(td::NewIntBench());
#if !TD_WINDOWS
td::bench(td::PipeBench());
#endif
#if TD_LINUX || TD_ANDROID || TD_TIZEN
td::bench(td::SemBench());
#endif
return 0;
}