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tdlib-fork/benchmark/bench_actor.cpp

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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// 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/actor/actor.h"
#include "td/actor/PromiseFuture.h"
#include "td/utils/logging.h"
#include <algorithm>
#if TD_MSVC
#pragma comment(linker, "/STACK:16777216")
#endif
template <int type>
class RingBench : public td::Benchmark {
public:
struct PassActor;
private:
int actor_n_;
int thread_n_;
std::vector<td::ActorId<PassActor>> actor_array_;
td::ConcurrentScheduler *scheduler_;
public:
std::string get_description() const override {
static const char *types[] = {"later", "immediate", "raw", "tail", "lambda"};
static_assert(0 <= type && type < 5, "");
return PSTRING() << "Ring (send_" << types[type] << ") (threads_n = " << thread_n_ << ")";
}
struct PassActor : public td::Actor {
int id;
td::ActorId<PassActor> next_actor;
int start_n = 0;
void pass(int n) {
// LOG(INFO) << "pass: " << n;
if (n == 0) {
td::Scheduler::instance()->finish();
} else {
if (type == 0) {
send_closure_later(next_actor, &PassActor::pass, n - 1);
} else if (type == 1) {
send_closure(next_actor, &PassActor::pass, n - 1);
} else if (type == 2) {
send_event(next_actor, td::Event::raw(static_cast<td::uint32>(n - 1)));
} else if (type == 3) {
if (n % 5000 == 0) {
send_closure_later(next_actor, &PassActor::pass, n - 1);
} else {
// TODO: it is three times faster than send_event
// may be send event could be further optimized?
::td::Scheduler::instance()->hack(static_cast<td::ActorId<Actor>>(next_actor),
td::Event::raw(static_cast<td::uint32>(n - 1)));
}
} else if (type == 4) {
send_lambda(next_actor, [=, ptr = next_actor.get_actor_unsafe()] { ptr->pass(n - 1); });
}
}
}
void raw_event(const td::Event::Raw &raw) override {
pass(static_cast<int>(raw.u32));
}
void start_up() override {
yield();
}
void wakeup() override {
if (start_n != 0) {
int n = start_n;
start_n = 0;
pass(n);
}
}
};
RingBench(int actor_n, int thread_n) : actor_n_(actor_n), thread_n_(thread_n) {
}
void start_up() override {
scheduler_ = new td::ConcurrentScheduler();
scheduler_->init(thread_n_);
actor_array_ = std::vector<td::ActorId<PassActor>>(actor_n_);
for (int i = 0; i < actor_n_; i++) {
actor_array_[i] =
scheduler_->create_actor_unsafe<PassActor>(thread_n_ ? i % thread_n_ : 0, "PassActor").release();
actor_array_[i].get_actor_unsafe()->id = i;
}
for (int i = 0; i < actor_n_; i++) {
actor_array_[i].get_actor_unsafe()->next_actor = actor_array_[(i + 1) % actor_n_];
}
scheduler_->start();
}
void run(int n) override {
// first actor is on main_thread
actor_array_[0].get_actor_unsafe()->start_n = std::max(n, 100);
while (scheduler_->run_main(10)) {
// empty
}
}
void tear_down() override {
scheduler_->finish();
delete scheduler_;
}
};
template <int type>
class QueryBench : public td::Benchmark {
public:
std::string get_description() const override {
static const char *types[] = {"callback", "immediate future", "delayed future", "dummy", "lambda", "lambda_future"};
static_assert(0 <= type && type < 6, "");
return PSTRING() << "QueryBench: " << types[type];
}
class ClientActor : public td::Actor {
public:
class Callback {
public:
Callback() = default;
Callback(const Callback &) = delete;
Callback &operator=(const Callback &) = delete;
Callback(Callback &&) = delete;
Callback &operator=(Callback &&) = delete;
virtual ~Callback() = default;
virtual void on_result(int x) = 0;
};
explicit ClientActor(std::unique_ptr<Callback> callback) : callback_(std::move(callback)) {
}
void f(int x) {
callback_->on_result(x * x);
}
void dummy(int x, int *y) {
*y = x * x;
}
void f_immediate_promise(int x, td::PromiseActor<int> &&promise) {
promise.set_value(x * x);
}
void f_promise(td::Promise<> promise) {
promise.set_value(td::Unit());
}
private:
std::unique_ptr<Callback> callback_;
};
class ServerActor : public td::Actor {
public:
class ClientCallback : public ClientActor::Callback {
public:
explicit ClientCallback(td::ActorId<ServerActor> server) : server_(server) {
}
void on_result(int x) override {
send_closure(server_, &ServerActor::on_result, x);
}
private:
td::ActorId<ServerActor> server_;
};
void start_up() override {
client_ = td::create_actor<ClientActor>("Client", td::make_unique<ClientCallback>(actor_id(this))).release();
}
void on_result(int x) {
CHECK(x == n_ * n_);
wakeup();
}
void wakeup() override {
while (true) {
if (n_ < 0) {
td::Scheduler::instance()->finish();
return;
}
n_--;
if (type == 0) {
send_closure(client_, &ClientActor::f, n_);
return;
} else if (type == 1) {
td::PromiseActor<int> promise;
td::FutureActor<int> future;
init_promise_future(&promise, &future);
send_closure(client_, &ClientActor::f_immediate_promise, n_, std::move(promise));
int val = future.move_as_ok();
CHECK(val == n_ * n_);
} else if (type == 2) {
td::PromiseActor<int> promise;
init_promise_future(&promise, &future_);
future_.set_event(td::EventCreator::raw(actor_id(), static_cast<td::uint64>(1)));
send_closure(client_, &ClientActor::f_immediate_promise, n_, std::move(promise));
return;
} else if (type == 3) {
int res;
send_closure(client_, &ClientActor::dummy, n_, &res);
} else if (type == 4) {
int val = 0;
send_lambda(client_, [&] { val = n_ * n_; });
} else if (type == 5) {
send_closure(client_, &ClientActor::f_promise,
td::PromiseCreator::lambda(
[id = actor_id(this), n = n_](td::Unit) { send_closure(id, &ServerActor::result, n * n); }));
return;
}
}
}
void run(int n) {
n_ = n;
wakeup();
}
void raw_event(const td::Event::Raw &event) override {
int val = future_.move_as_ok();
CHECK(val == n_ * n_);
wakeup();
}
void result(int val) {
CHECK(val == n_ * n_);
wakeup();
}
private:
td::ActorId<ClientActor> client_;
int n_;
td::FutureActor<int> future_;
};
void start_up() override {
scheduler_ = new td::ConcurrentScheduler();
scheduler_->init(0);
server_ = scheduler_->create_actor_unsafe<ServerActor>(0, "Server");
scheduler_->start();
}
void run(int n) override {
// first actor is on main_thread
{
auto guard = scheduler_->get_current_guard();
send_closure(server_, &ServerActor::run, n);
}
while (scheduler_->run_main(10)) {
// empty
}
}
void tear_down() override {
server_.release();
scheduler_->finish();
delete scheduler_;
}
private:
td::ConcurrentScheduler *scheduler_;
td::ActorOwn<ServerActor> server_;
};
int main() {
SET_VERBOSITY_LEVEL(VERBOSITY_NAME(DEBUG));
bench(RingBench<4>(504, 0));
bench(RingBench<3>(504, 0));
bench(RingBench<0>(504, 0));
bench(RingBench<1>(504, 0));
bench(RingBench<2>(504, 0));
bench(QueryBench<5>());
bench(QueryBench<4>());
bench(QueryBench<2>());
bench(QueryBench<3>());
bench(QueryBench<1>());
bench(QueryBench<0>());
bench(RingBench<3>(504, 0));
bench(RingBench<0>(504, 10));
bench(RingBench<1>(504, 10));
bench(RingBench<2>(504, 10));
bench(RingBench<0>(504, 2));
bench(RingBench<1>(504, 2));
bench(RingBench<2>(504, 2));
return 0;
}