tdlight/benchmark/bench_misc.cpp

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2023
//
// 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)
//
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#include "td/telegram/telegram_api.h"
#include "td/telegram/telegram_api.hpp"
#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/utils/SliceBuilder.h"
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#include "td/utils/Status.h"
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#include "td/utils/ThreadSafeCounter.h"
#if !TD_WINDOWS
#include <unistd.h>
#include <utime.h>
#endif
#if TD_LINUX || TD_ANDROID || TD_TIZEN
#include <semaphore.h>
#endif
#include <algorithm>
#include <array>
#include <atomic>
#include <cstdint>
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#include <set>
class F {
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td::uint32 &sum;
public:
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explicit F(td::uint32 &sum) : sum(sum) {
}
template <class T>
void operator()(const T &x) const {
sum += static_cast<td::uint32>(reinterpret_cast<std::uintptr_t>(&x));
}
};
BENCH(Call, "TL Call") {
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td::tl_object_ptr<td::telegram_api::Function> x = td::make_tl_object<td::telegram_api::account_getWallPapers>(0);
td::uint32 res = 0;
F f(res);
for (int i = 0; i < n; i++) {
downcast_call(*x, f);
}
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td::do_not_optimize_away(res);
}
#if !TD_EVENTFD_UNSUPPORTED
BENCH(EventFd, "EventFd") {
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td::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;
}
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td::do_not_optimize_away(res);
}
BENCH(NewObj, "new struct, then delete") {
struct A {
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td::int32 a = 0;
td::int32 b = 0;
td::int32 c = 0;
td::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;
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td::do_not_optimize_away(res);
}
#if !TD_THREAD_UNSUPPORTED
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BENCH(ThreadNew, "new struct, then delete in 2 threads") {
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NewObjBench a;
NewObjBench b;
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td::thread ta([&] { a.run(n / 2); });
td::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++) {
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res += td::Clocks::monotonic();
}
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td::do_not_optimize_away(res);
}
*/
#if !TD_WINDOWS
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class PipeBench final : public td::Benchmark {
public:
int p[2];
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td::string get_description() const final {
return "pipe write + read int32";
}
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void start_up() final {
int res = pipe(p);
CHECK(res == 0);
}
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void run(int n) final {
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;
}
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td::do_not_optimize_away(res);
}
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void tear_down() final {
close(p[0]);
close(p[1]);
}
};
#endif
#if TD_LINUX || TD_ANDROID || TD_TIZEN
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class SemBench final : public td::Benchmark {
sem_t sem;
public:
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td::string get_description() const final {
return "sem post + wait";
}
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void start_up() final {
int err = sem_init(&sem, 0, 0);
CHECK(err != -1);
}
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void run(int n) final {
for (int i = 0; i < n; i++) {
sem_post(&sem);
sem_wait(&sem);
}
}
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void tear_down() final {
sem_destroy(&sem);
}
};
#endif
#if !TD_WINDOWS
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class UtimeBench final : public td::Benchmark {
public:
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void start_up() final {
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td::FileFd::open("test", td::FileFd::Create | td::FileFd::Write).move_as_ok().close();
}
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td::string get_description() const final {
return "utime";
}
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void run(int n) final {
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") {
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auto fd = td::FileFd::open("test", td::FileFd::Create | td::FileFd::Write).move_as_ok();
for (int i = 0; i < n; i++) {
fd.pwrite("a", 0).ok();
}
fd.close();
}
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class CreateFileBench final : public td::Benchmark {
td::string get_description() const final {
return "create_file";
}
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void start_up() final {
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td::mkdir("A").ensure();
}
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void run(int n) final {
for (int i = 0; i < n; i++) {
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td::FileFd::open(PSLICE() << "A/" << i, td::FileFd::Write | td::FileFd::Create).move_as_ok().close();
}
}
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void tear_down() final {
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td::rmrf("A/").ignore();
}
};
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class WalkPathBench final : public td::Benchmark {
td::string get_description() const final {
return "walk_path";
}
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void start_up_n(int n) final {
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td::mkdir("A").ensure();
for (int i = 0; i < n; i++) {
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td::FileFd::open(PSLICE() << "A/" << i, td::FileFd::Write | td::FileFd::Create).move_as_ok().close();
}
}
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void run(int n) final {
int cnt = 0;
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td::walk_path("A/", [&](td::CSlice path, auto type) {
if (type == td::WalkPath::Type::EnterDir) {
return;
}
td::stat(path).ok();
cnt++;
}).ignore();
}
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void tear_down() final {
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td::rmrf("A/").ignore();
}
};
#if !TD_THREAD_UNSUPPORTED
template <int ThreadN = 2>
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class AtomicReleaseIncBench final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "AtomicReleaseInc" << ThreadN;
}
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static std::atomic<td::uint64> a_;
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void run(int n) final {
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td::vector<td::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>
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std::atomic<td::uint64> AtomicReleaseIncBench<ThreadN>::a_;
template <int ThreadN = 2>
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class AtomicReleaseCasIncBench final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "AtomicReleaseCasInc" << ThreadN;
}
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static std::atomic<td::uint64> a_;
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void run(int n) final {
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td::vector<td::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>
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std::atomic<td::uint64> AtomicReleaseCasIncBench<ThreadN>::a_;
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template <int ThreadN>
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class RwMutexReadBench final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "RwMutexRead" << ThreadN;
}
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td::RwMutex mutex_;
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void run(int n) final {
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td::vector<td::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();
}
}
};
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template <int ThreadN>
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class RwMutexWriteBench final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "RwMutexWrite" << ThreadN;
}
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td::RwMutex mutex_;
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void run(int n) final {
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td::vector<td::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();
}
}
};
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class ThreadSafeCounterBench final : public td::Benchmark {
static td::ThreadSafeCounter counter_;
int thread_count_;
td::string get_description() const final {
return PSTRING() << "ThreadSafeCounter" << thread_count_;
}
void run(int n) final {
counter_.clear();
td::vector<td::thread> threads;
for (int i = 0; i < thread_count_; i++) {
threads.emplace_back([n] {
for (int i = 0; i < n; i++) {
counter_.add(1);
}
});
}
for (auto &thread : threads) {
thread.join();
}
CHECK(counter_.sum() == n * thread_count_);
}
public:
explicit ThreadSafeCounterBench(int thread_count) : thread_count_(thread_count) {
}
};
td::ThreadSafeCounter ThreadSafeCounterBench::counter_;
template <bool StrictOrder>
class AtomicCounterBench final : public td::Benchmark {
static std::atomic<td::int64> counter_;
int thread_count_;
td::string get_description() const final {
return PSTRING() << "AtomicCounter" << thread_count_;
}
void run(int n) final {
counter_.store(0);
td::vector<td::thread> threads;
for (int i = 0; i < thread_count_; i++) {
threads.emplace_back([n] {
for (int i = 0; i < n; i++) {
counter_.fetch_add(1, StrictOrder ? std::memory_order_seq_cst : std::memory_order_relaxed);
}
});
}
for (auto &thread : threads) {
thread.join();
}
CHECK(counter_.load() == n * thread_count_);
}
public:
explicit AtomicCounterBench(int thread_count) : thread_count_(thread_count) {
}
};
template <bool StrictOrder>
std::atomic<td::int64> AtomicCounterBench<StrictOrder>::counter_;
#endif
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class IdDuplicateCheckerOld {
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public:
static td::string get_description() {
return "Old";
}
td::Status check(td::int64 message_id) {
if (saved_message_ids_.size() == MAX_SAVED_MESSAGE_IDS) {
auto oldest_message_id = *saved_message_ids_.begin();
if (message_id < oldest_message_id) {
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return td::Status::Error(2, PSLICE() << "Ignore very old message " << message_id
<< " older than the oldest known message " << oldest_message_id);
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}
}
if (saved_message_ids_.count(message_id) != 0) {
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return td::Status::Error(1, PSLICE() << "Ignore already processed message " << message_id);
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}
saved_message_ids_.insert(message_id);
if (saved_message_ids_.size() > MAX_SAVED_MESSAGE_IDS) {
saved_message_ids_.erase(saved_message_ids_.begin());
}
return td::Status::OK();
}
private:
static constexpr size_t MAX_SAVED_MESSAGE_IDS = 1000;
std::set<td::int64> saved_message_ids_;
};
template <size_t MAX_SAVED_MESSAGE_IDS>
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class IdDuplicateCheckerNew {
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public:
static td::string get_description() {
return PSTRING() << "New" << MAX_SAVED_MESSAGE_IDS;
}
td::Status check(td::int64 message_id) {
auto insert_result = saved_message_ids_.insert(message_id);
if (!insert_result.second) {
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return td::Status::Error(1, PSLICE() << "Ignore already processed message " << message_id);
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}
if (saved_message_ids_.size() == MAX_SAVED_MESSAGE_IDS + 1) {
auto begin_it = saved_message_ids_.begin();
bool is_very_old = begin_it == insert_result.first;
saved_message_ids_.erase(begin_it);
if (is_very_old) {
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return td::Status::Error(2, PSLICE() << "Ignore very old message " << message_id
<< " older than the oldest known message " << *saved_message_ids_.begin());
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}
}
return td::Status::OK();
}
private:
std::set<td::int64> saved_message_ids_;
};
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class IdDuplicateCheckerNewOther {
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public:
static td::string get_description() {
return "NewOther";
}
td::Status check(td::int64 message_id) {
if (!saved_message_ids_.insert(message_id).second) {
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return td::Status::Error(1, PSLICE() << "Ignore already processed message " << message_id);
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}
if (saved_message_ids_.size() == MAX_SAVED_MESSAGE_IDS + 1) {
auto begin_it = saved_message_ids_.begin();
bool is_very_old = *begin_it == message_id;
saved_message_ids_.erase(begin_it);
if (is_very_old) {
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return td::Status::Error(2, PSLICE() << "Ignore very old message " << message_id
<< " older than the oldest known message " << *saved_message_ids_.begin());
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}
}
return td::Status::OK();
}
private:
static constexpr size_t MAX_SAVED_MESSAGE_IDS = 1000;
std::set<td::int64> saved_message_ids_;
};
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class IdDuplicateCheckerNewSimple {
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public:
static td::string get_description() {
return "NewSimple";
}
td::Status check(td::int64 message_id) {
auto insert_result = saved_message_ids_.insert(message_id);
if (!insert_result.second) {
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return td::Status::Error(1, "Ignore already processed message");
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}
if (saved_message_ids_.size() == MAX_SAVED_MESSAGE_IDS + 1) {
auto begin_it = saved_message_ids_.begin();
bool is_very_old = begin_it == insert_result.first;
saved_message_ids_.erase(begin_it);
if (is_very_old) {
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return td::Status::Error(2, "Ignore very old message");
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}
}
return td::Status::OK();
}
private:
static constexpr size_t MAX_SAVED_MESSAGE_IDS = 1000;
std::set<td::int64> saved_message_ids_;
};
template <size_t max_size>
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class IdDuplicateCheckerArray {
public:
static td::string get_description() {
return PSTRING() << "Array" << max_size;
}
td::Status check(td::int64 message_id) {
if (end_pos_ == 2 * max_size) {
std::copy_n(&saved_message_ids_[max_size], max_size, &saved_message_ids_[0]);
end_pos_ = max_size;
}
if (end_pos_ == 0 || message_id > saved_message_ids_[end_pos_ - 1]) {
// fast path
saved_message_ids_[end_pos_++] = message_id;
return td::Status::OK();
}
if (end_pos_ >= max_size && message_id < saved_message_ids_[0]) {
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return td::Status::Error(2, PSLICE() << "Ignore very old message " << message_id
<< " older than the oldest known message " << saved_message_ids_[0]);
}
auto it = std::lower_bound(&saved_message_ids_[0], &saved_message_ids_[end_pos_], message_id);
if (*it == message_id) {
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return td::Status::Error(1, PSLICE() << "Ignore already processed message " << message_id);
}
std::copy_backward(it, &saved_message_ids_[end_pos_], &saved_message_ids_[end_pos_ + 1]);
*it = message_id;
++end_pos_;
return td::Status::OK();
}
private:
std::array<td::int64, 2 * max_size> saved_message_ids_;
std::size_t end_pos_ = 0;
};
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template <class T>
class DuplicateCheckerBench final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "DuplicateCheckerBench" << T::get_description();
}
void run(int n) final {
T checker_;
for (int i = 0; i < n; i++) {
checker_.check(i).ensure();
}
}
};
template <class T>
class DuplicateCheckerBenchRepeat final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "DuplicateCheckerBenchRepeat" << T::get_description();
}
void run(int n) final {
T checker_;
for (int i = 0; i < n; i++) {
auto iter = i >> 10;
auto pos = i - (iter << 10);
if (pos < 768) {
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if (iter >= 3 && pos == 0) {
auto error = checker_.check((iter - 3) * 768 + pos);
CHECK(error.error().code() == 2);
}
checker_.check(iter * 768 + pos).ensure();
} else {
checker_.check(iter * 768 + pos - 256).ensure_error();
}
}
}
};
template <class T>
class DuplicateCheckerBenchRepeatOnly final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "DuplicateCheckerBenchRepeatOnly" << T::get_description();
}
void run(int n) final {
T checker_;
for (int i = 0; i < n; i++) {
auto result = checker_.check(i & 255);
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CHECK(result.is_error() == (i >= 256));
}
}
};
template <class T>
class DuplicateCheckerBenchReverse final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "DuplicateCheckerBenchReverseAdd" << T::get_description();
}
void run(int n) final {
T checker_;
for (int i = 0; i < n; i++) {
auto pos = i & 255;
checker_.check(i - pos + (255 - pos)).ensure();
}
}
};
template <class T>
class DuplicateCheckerBenchEvenOdd final : public td::Benchmark {
td::string get_description() const final {
return PSTRING() << "DuplicateCheckerBenchEvenOdd" << T::get_description();
}
void run(int n) final {
T checker_;
for (int i = 0; i < n; i++) {
auto pos = i & 255;
checker_.check(i - pos + (pos * 2) % 256 + (pos * 2) / 256).ensure();
}
}
};
int main() {
SET_VERBOSITY_LEVEL(VERBOSITY_NAME(DEBUG));
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td::bench(DuplicateCheckerBenchEvenOdd<IdDuplicateCheckerNew<1000>>());
td::bench(DuplicateCheckerBenchEvenOdd<IdDuplicateCheckerNew<300>>());
td::bench(DuplicateCheckerBenchEvenOdd<IdDuplicateCheckerArray<1000>>());
td::bench(DuplicateCheckerBenchEvenOdd<IdDuplicateCheckerArray<300>>());
td::bench(DuplicateCheckerBenchReverse<IdDuplicateCheckerNew<1000>>());
td::bench(DuplicateCheckerBenchReverse<IdDuplicateCheckerNew<300>>());
td::bench(DuplicateCheckerBenchReverse<IdDuplicateCheckerArray<1000>>());
td::bench(DuplicateCheckerBenchReverse<IdDuplicateCheckerArray<300>>());
td::bench(DuplicateCheckerBenchRepeatOnly<IdDuplicateCheckerNew<1000>>());
td::bench(DuplicateCheckerBenchRepeatOnly<IdDuplicateCheckerNew<300>>());
td::bench(DuplicateCheckerBenchRepeatOnly<IdDuplicateCheckerArray<1000>>());
td::bench(DuplicateCheckerBenchRepeatOnly<IdDuplicateCheckerArray<300>>());
td::bench(DuplicateCheckerBenchRepeat<IdDuplicateCheckerOld>());
td::bench(DuplicateCheckerBenchRepeat<IdDuplicateCheckerNew<1000>>());
td::bench(DuplicateCheckerBenchRepeat<IdDuplicateCheckerNewOther>());
td::bench(DuplicateCheckerBenchRepeat<IdDuplicateCheckerNewSimple>());
td::bench(DuplicateCheckerBenchRepeat<IdDuplicateCheckerNew<300>>());
td::bench(DuplicateCheckerBenchRepeat<IdDuplicateCheckerArray<1000>>());
td::bench(DuplicateCheckerBenchRepeat<IdDuplicateCheckerArray<300>>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerOld>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerNew<1000>>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerNewOther>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerNewSimple>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerNew<300>>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerNew<100>>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerNew<10>>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerArray<1000>>());
td::bench(DuplicateCheckerBench<IdDuplicateCheckerArray<300>>());
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#if !TD_THREAD_UNSUPPORTED
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for (int i = 1; i <= 16; i *= 2) {
td::bench(ThreadSafeCounterBench(i));
td::bench(AtomicCounterBench<false>(i));
td::bench(AtomicCounterBench<true>(i));
}
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td::bench(AtomicReleaseIncBench<1>());
td::bench(AtomicReleaseIncBench<2>());
td::bench(AtomicReleaseCasIncBench<1>());
td::bench(AtomicReleaseCasIncBench<2>());
td::bench(RwMutexWriteBench<1>());
td::bench(RwMutexReadBench<1>());
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td::bench(RwMutexWriteBench<2>());
td::bench(RwMutexReadBench<2>());
#endif
#if !TD_WINDOWS
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td::bench(UtimeBench());
#endif
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td::bench(WalkPathBench());
td::bench(CreateFileBench());
td::bench(PwriteBench());
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td::bench(CallBench());
#if !TD_THREAD_UNSUPPORTED
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td::bench(ThreadNewBench());
#endif
#if !TD_EVENTFD_UNSUPPORTED
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td::bench(EventFdBench());
#endif
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td::bench(NewObjBench());
td::bench(NewIntBench());
#if !TD_WINDOWS
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td::bench(PipeBench());
#endif
#if TD_LINUX || TD_ANDROID || TD_TIZEN
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td::bench(SemBench());
#endif
}