// // Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2022 // // 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/actor/actor.h" #include "td/actor/ConcurrentScheduler.h" #include "td/actor/MultiPromise.h" #include "td/actor/PromiseFuture.h" #include "td/actor/SleepActor.h" #include "td/utils/common.h" #include "td/utils/logging.h" #include "td/utils/MpscPollableQueue.h" #include "td/utils/Observer.h" #include "td/utils/port/FileFd.h" #include "td/utils/port/thread.h" #include "td/utils/Slice.h" #include "td/utils/Status.h" #include "td/utils/StringBuilder.h" #include "td/utils/tests.h" #include "td/utils/Time.h" #include <memory> #include <tuple> static const size_t BUF_SIZE = 1024 * 1024; static char buf[BUF_SIZE]; static char buf2[BUF_SIZE]; static td::StringBuilder sb(td::MutableSlice(buf, BUF_SIZE - 1)); static td::StringBuilder sb2(td::MutableSlice(buf2, BUF_SIZE - 1)); static td::vector<std::shared_ptr<td::MpscPollableQueue<td::EventFull>>> create_queues() { #if TD_THREAD_UNSUPPORTED || TD_EVENTFD_UNSUPPORTED return {}; #else auto res = std::make_shared<td::MpscPollableQueue<td::EventFull>>(); res->init(); return {res}; #endif } TEST(Actors, SendLater) { sb.clear(); td::Scheduler scheduler; scheduler.init(0, create_queues(), nullptr); auto guard = scheduler.get_guard(); class Worker final : public td::Actor { public: void f() { sb << "A"; } }; auto id = td::create_actor<Worker>("Worker"); scheduler.run_no_guard(td::Timestamp::in(1)); td::send_closure(id, &Worker::f); td::send_closure_later(id, &Worker::f); td::send_closure(id, &Worker::f); ASSERT_STREQ("A", sb.as_cslice().c_str()); scheduler.run_no_guard(td::Timestamp::in(1)); ASSERT_STREQ("AAA", sb.as_cslice().c_str()); } class X { public: X() { sb << "[cnstr_default]"; } X(const X &) { sb << "[cnstr_copy]"; } X(X &&) noexcept { sb << "[cnstr_move]"; } X &operator=(const X &) { sb << "[set_copy]"; return *this; } X &operator=(X &&) noexcept { sb << "[set_move]"; return *this; } ~X() = default; }; class XReceiver final : public td::Actor { public: void by_const_ref(const X &) { sb << "[by_const_ref]"; } void by_lvalue_ref(const X &) { sb << "[by_lvalue_ref]"; } void by_value(X) { sb << "[by_value]"; } }; TEST(Actors, simple_pass_event_arguments) { td::Scheduler scheduler; scheduler.init(0, create_queues(), nullptr); auto guard = scheduler.get_guard(); auto id = td::create_actor<XReceiver>("XR").release(); scheduler.run_no_guard(td::Timestamp::in(1)); X x; // check tuple // std::tuple<X> tx; // sb.clear(); // std::tuple<X> ty(std::move(tx)); // tx = std::move(ty); // ASSERT_STREQ("[cnstr_move]", sb.as_cslice().c_str()); // Send temporary object // Tmp-->ConstRef sb.clear(); td::send_closure(id, &XReceiver::by_const_ref, X()); ASSERT_STREQ("[cnstr_default][by_const_ref]", sb.as_cslice().c_str()); // Tmp-->ConstRef (Delayed) sb.clear(); td::send_closure_later(id, &XReceiver::by_const_ref, X()); scheduler.run_no_guard(td::Timestamp::in(1)); // LOG(ERROR) << sb.as_cslice(); ASSERT_STREQ("[cnstr_default][cnstr_move][by_const_ref]", sb.as_cslice().c_str()); // Tmp-->LvalueRef sb.clear(); td::send_closure(id, &XReceiver::by_lvalue_ref, X()); ASSERT_STREQ("[cnstr_default][by_lvalue_ref]", sb.as_cslice().c_str()); // Tmp-->LvalueRef (Delayed) sb.clear(); td::send_closure_later(id, &XReceiver::by_lvalue_ref, X()); scheduler.run_no_guard(td::Timestamp::in(1)); ASSERT_STREQ("[cnstr_default][cnstr_move][by_lvalue_ref]", sb.as_cslice().c_str()); // Tmp-->Value sb.clear(); td::send_closure(id, &XReceiver::by_value, X()); ASSERT_STREQ("[cnstr_default][cnstr_move][by_value]", sb.as_cslice().c_str()); // Tmp-->Value (Delayed) sb.clear(); td::send_closure_later(id, &XReceiver::by_value, X()); scheduler.run_no_guard(td::Timestamp::in(1)); ASSERT_STREQ("[cnstr_default][cnstr_move][cnstr_move][by_value]", sb.as_cslice().c_str()); // Var-->ConstRef sb.clear(); td::send_closure(id, &XReceiver::by_const_ref, x); ASSERT_STREQ("[by_const_ref]", sb.as_cslice().c_str()); // Var-->ConstRef (Delayed) sb.clear(); td::send_closure_later(id, &XReceiver::by_const_ref, x); scheduler.run_no_guard(td::Timestamp::in(1)); ASSERT_STREQ("[cnstr_copy][by_const_ref]", sb.as_cslice().c_str()); // Var-->LvalueRef // Var-->LvalueRef (Delayed) // CE or stange behaviour // Var-->Value sb.clear(); td::send_closure(id, &XReceiver::by_value, x); ASSERT_STREQ("[cnstr_copy][by_value]", sb.as_cslice().c_str()); // Var-->Value (Delayed) sb.clear(); td::send_closure_later(id, &XReceiver::by_value, x); scheduler.run_no_guard(td::Timestamp::in(1)); ASSERT_STREQ("[cnstr_copy][cnstr_move][by_value]", sb.as_cslice().c_str()); } class PrintChar final : public td::Actor { public: PrintChar(char c, int cnt) : char_(c), cnt_(cnt) { } void start_up() final { yield(); } void wakeup() final { if (cnt_ == 0) { stop(); } else { sb << char_; cnt_--; yield(); } } private: char char_; int cnt_; }; // // Yield must add actor to the end of queue // TEST(Actors, simple_hand_yield) { td::Scheduler scheduler; scheduler.init(0, create_queues(), nullptr); sb.clear(); int cnt = 1000; { auto guard = scheduler.get_guard(); td::create_actor<PrintChar>("PrintA", 'A', cnt).release(); td::create_actor<PrintChar>("PrintB", 'B', cnt).release(); td::create_actor<PrintChar>("PrintC", 'C', cnt).release(); } scheduler.run(td::Timestamp::in(1)); td::string expected; for (int i = 0; i < cnt; i++) { expected += "ABC"; } ASSERT_STREQ(expected.c_str(), sb.as_cslice().c_str()); } class Ball { public: friend void start_migrate(Ball &ball, td::int32 sched_id) { sb << "start"; } friend void finish_migrate(Ball &ball) { sb2 << "finish"; } }; class Pong final : public td::Actor { public: void pong(Ball ball) { td::Scheduler::instance()->finish(); } }; class Ping final : public td::Actor { public: explicit Ping(td::ActorId<Pong> pong) : pong_(pong) { } void start_up() final { td::send_closure(pong_, &Pong::pong, Ball()); } private: td::ActorId<Pong> pong_; }; TEST(Actors, simple_migrate) { sb.clear(); sb2.clear(); td::ConcurrentScheduler scheduler; scheduler.init(2); auto pong = scheduler.create_actor_unsafe<Pong>(2, "Pong").release(); scheduler.create_actor_unsafe<Ping>(1, "Ping", pong).release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); #if TD_THREAD_UNSUPPORTED || TD_EVENTFD_UNSUPPORTED ASSERT_STREQ("", sb.as_cslice().c_str()); ASSERT_STREQ("", sb2.as_cslice().c_str()); #else ASSERT_STREQ("start", sb.as_cslice().c_str()); ASSERT_STREQ("finish", sb2.as_cslice().c_str()); #endif } class OpenClose final : public td::Actor { public: explicit OpenClose(int cnt) : cnt_(cnt) { } void start_up() final { yield(); } void wakeup() final { auto observer = reinterpret_cast<td::ObserverBase *>(123); if (cnt_ > 0) { auto r_file_fd = td::FileFd::open("server", td::FileFd::Read | td::FileFd::Create); LOG_CHECK(r_file_fd.is_ok()) << r_file_fd.error(); auto file_fd = r_file_fd.move_as_ok(); { auto pollable_fd = file_fd.get_poll_info().extract_pollable_fd(observer); } file_fd.close(); cnt_--; yield(); } else { td::Scheduler::instance()->finish(); } } private: int cnt_; }; TEST(Actors, open_close) { td::ConcurrentScheduler scheduler; scheduler.init(2); int cnt = 10000; // TODO(perf) optimize scheduler.create_actor_unsafe<OpenClose>(1, "A", cnt).release(); scheduler.create_actor_unsafe<OpenClose>(2, "B", cnt).release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); } class MsgActor : public td::Actor { public: virtual void msg() = 0; }; class Slave final : public td::Actor { public: td::ActorId<MsgActor> msg; explicit Slave(td::ActorId<MsgActor> msg) : msg(msg) { } void hangup() final { td::send_closure(msg, &MsgActor::msg); } }; class MasterActor final : public MsgActor { public: void loop() final { alive_ = true; slave = td::create_actor<Slave>("slave", static_cast<td::ActorId<MsgActor>>(actor_id(this))); stop(); } td::ActorOwn<Slave> slave; MasterActor() = default; MasterActor(const MasterActor &) = delete; MasterActor &operator=(const MasterActor &) = delete; MasterActor(MasterActor &&) = delete; MasterActor &operator=(MasterActor &&) = delete; ~MasterActor() final { alive_ = 987654321; } void msg() final { CHECK(alive_ == 123456789); } td::uint64 alive_ = 123456789; }; TEST(Actors, call_after_destruct) { td::Scheduler scheduler; scheduler.init(0, create_queues(), nullptr); { auto guard = scheduler.get_guard(); td::create_actor<MasterActor>("Master").release(); } scheduler.run(td::Timestamp::in(1)); } class LinkTokenSlave final : public td::Actor { public: explicit LinkTokenSlave(td::ActorShared<> parent) : parent_(std::move(parent)) { } void add(td::uint64 link_token) { CHECK(link_token == get_link_token()); } void close() { stop(); } private: td::ActorShared<> parent_; }; class LinkTokenMasterActor final : public td::Actor { public: explicit LinkTokenMasterActor(int cnt) : cnt_(cnt) { } void start_up() final { child_ = td::create_actor<LinkTokenSlave>("Slave", actor_shared(this, 123)).release(); yield(); } void loop() final { for (int i = 0; i < 100 && cnt_ > 0; cnt_--, i++) { auto token = static_cast<td::uint64>(cnt_) + 1; switch (i % 4) { case 0: { td::send_closure(td::ActorShared<LinkTokenSlave>(child_, token), &LinkTokenSlave::add, token); break; } case 1: { td::send_closure_later(td::ActorShared<LinkTokenSlave>(child_, token), &LinkTokenSlave::add, token); break; } case 2: { td::EventCreator::closure(td::ActorShared<LinkTokenSlave>(child_, token), &LinkTokenSlave::add, token) .try_emit(); break; } case 3: { td::EventCreator::closure(td::ActorShared<LinkTokenSlave>(child_, token), &LinkTokenSlave::add, token) .try_emit_later(); break; } } } if (cnt_ == 0) { td::send_closure(child_, &LinkTokenSlave::close); } else { yield(); } } void hangup_shared() final { CHECK(get_link_token() == 123); td::Scheduler::instance()->finish(); stop(); } private: int cnt_; td::ActorId<LinkTokenSlave> child_; }; TEST(Actors, link_token) { td::ConcurrentScheduler scheduler; scheduler.init(0); auto cnt = 100000; scheduler.create_actor_unsafe<LinkTokenMasterActor>(0, "A", cnt).release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); } TEST(Actors, promise) { int value = -1; td::Promise<int> p1 = td::PromiseCreator::lambda([&](int x) { value = x; }); p1.set_error(td::Status::Error("Test error")); ASSERT_EQ(0, value); td::Promise<td::int32> p2 = td::PromiseCreator::lambda([&](td::Result<td::int32> x) { value = 1; }); p2.set_error(td::Status::Error("Test error")); ASSERT_EQ(1, value); } class LaterSlave final : public td::Actor { public: explicit LaterSlave(td::ActorShared<> parent) : parent_(std::move(parent)) { } private: td::ActorShared<> parent_; void hangup() final { sb << "A"; td::send_closure(actor_id(this), &LaterSlave::finish); } void finish() { sb << "B"; stop(); } }; class LaterMasterActor final : public td::Actor { int cnt_ = 3; td::vector<td::ActorOwn<LaterSlave>> children_; void start_up() final { for (int i = 0; i < cnt_; i++) { children_.push_back(td::create_actor<LaterSlave>("B", actor_shared(this))); } yield(); } void loop() final { children_.clear(); } void hangup_shared() final { if (!--cnt_) { td::Scheduler::instance()->finish(); stop(); } } }; TEST(Actors, later) { sb.clear(); td::ConcurrentScheduler scheduler; scheduler.init(0); scheduler.create_actor_unsafe<LaterMasterActor>(0, "A").release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); ASSERT_STREQ(sb.as_cslice().c_str(), "AAABBB"); } class MultiPromise2 final : public td::Actor { public: void start_up() final { auto promise = td::PromiseCreator::lambda([](td::Result<td::Unit> result) { result.ensure(); td::Scheduler::instance()->finish(); }); td::MultiPromiseActorSafe multi_promise{"MultiPromiseActor2"}; multi_promise.add_promise(std::move(promise)); for (int i = 0; i < 10; i++) { td::create_actor<td::SleepActor>("Sleep", 0.1, multi_promise.get_promise()).release(); } } }; class MultiPromise1 final : public td::Actor { public: void start_up() final { auto promise = td::PromiseCreator::lambda([](td::Result<td::Unit> result) { CHECK(result.is_error()); td::create_actor<MultiPromise2>("B").release(); }); td::MultiPromiseActorSafe multi_promise{"MultiPromiseActor1"}; multi_promise.add_promise(std::move(promise)); } }; TEST(Actors, MultiPromise) { td::ConcurrentScheduler scheduler; scheduler.init(0); scheduler.create_actor_unsafe<MultiPromise1>(0, "A").release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); } class FastPromise final : public td::Actor { public: void start_up() final { td::PromiseFuture<int> pf; auto promise = pf.move_promise(); auto future = pf.move_future(); promise.set_value(123); CHECK(future.move_as_ok() == 123); td::Scheduler::instance()->finish(); } }; TEST(Actors, FastPromise) { td::ConcurrentScheduler scheduler; scheduler.init(0); scheduler.create_actor_unsafe<FastPromise>(0, "A").release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); } class StopInTeardown final : public td::Actor { void loop() final { stop(); } void tear_down() final { stop(); td::Scheduler::instance()->finish(); } }; TEST(Actors, stop_in_teardown) { td::ConcurrentScheduler scheduler; scheduler.init(0); scheduler.create_actor_unsafe<StopInTeardown>(0, "A").release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); } class AlwaysWaitForMailbox final : public td::Actor { public: void start_up() final { always_wait_for_mailbox(); td::create_actor<td::SleepActor>("Sleep", 0.1, td::PromiseCreator::lambda([actor_id = actor_id(this), ptr = this](td::Unit) { td::send_closure(actor_id, &AlwaysWaitForMailbox::g); td::send_closure(actor_id, &AlwaysWaitForMailbox::g); CHECK(!ptr->was_f_); })) .release(); } void f() { was_f_ = true; td::Scheduler::instance()->finish(); } void g() { td::send_closure(actor_id(this), &AlwaysWaitForMailbox::f); } private: bool was_f_{false}; }; TEST(Actors, always_wait_for_mailbox) { td::ConcurrentScheduler scheduler; scheduler.init(0); scheduler.create_actor_unsafe<AlwaysWaitForMailbox>(0, "A").release(); scheduler.start(); while (scheduler.run_main(10)) { } scheduler.finish(); } #if !TD_THREAD_UNSUPPORTED && !TD_EVENTFD_UNSUPPORTED TEST(Actors, send_from_other_threads) { td::ConcurrentScheduler scheduler; scheduler.init(1); int thread_n = 10; class Listener final : public td::Actor { public: explicit Listener(int cnt) : cnt_(cnt) { } void dec() { if (--cnt_ == 0) { td::Scheduler::instance()->finish(); } } private: int cnt_; }; auto A = scheduler.create_actor_unsafe<Listener>(1, "A", thread_n).release(); scheduler.start(); td::vector<td::thread> threads(thread_n); for (auto &thread : threads) { thread = td::thread([&A, &scheduler] { auto guard = scheduler.get_send_guard(); td::send_closure(A, &Listener::dec); }); } while (scheduler.run_main(10)) { } for (auto &thread : threads) { thread.join(); } scheduler.finish(); } #endif class DelayedCall final : public td::Actor { public: void on_called(int *step) { CHECK(*step == 0); *step = 1; } }; class MultiPromiseSendClosureLaterTest final : public td::Actor { public: void start_up() final { delayed_call_ = td::create_actor<DelayedCall>("DelayedCall").release(); mpa_.add_promise(td::PromiseCreator::lambda([this](td::Unit) { CHECK(step_ == 1); step_++; td::Scheduler::instance()->finish(); })); auto lock = mpa_.get_promise(); td::send_closure_later(delayed_call_, &DelayedCall::on_called, &step_); lock.set_value(td::Unit()); } void tear_down() final { CHECK(step_ == 2); } private: int step_ = 0; td::MultiPromiseActor mpa_{"MultiPromiseActor"}; td::ActorId<DelayedCall> delayed_call_; }; TEST(Actors, MultiPromiseSendClosureLater) { td::ConcurrentScheduler scheduler; scheduler.init(0); scheduler.create_actor_unsafe<MultiPromiseSendClosureLaterTest>(0, "MultiPromiseSendClosureLaterTest").release(); scheduler.start(); while (scheduler.run_main(1)) { } scheduler.finish(); }