tdlight/tdactor/td/actor/impl/ActorInfo.h

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
//
// 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)
//
#pragma once
#include "td/actor/impl/Actor-decl.h"
#include "td/actor/impl/ActorInfo-decl.h"
#include "td/actor/impl/Scheduler-decl.h"
#include "td/utils/common.h"
#include "td/utils/format.h"
#include "td/utils/Heap.h"
#include "td/utils/List.h"
#include "td/utils/logging.h"
#include "td/utils/ObjectPool.h"
#include "td/utils/Slice.h"
#include "td/utils/StringBuilder.h"
#include <atomic>
#include <memory>
#include <utility>
namespace td {
inline StringBuilder &operator<<(StringBuilder &sb, const ActorInfo &info) {
sb << info.get_name() << ":" << const_cast<void *>(static_cast<const void *>(&info)) << ":"
<< const_cast<void *>(static_cast<const void *>(info.get_context()));
return sb;
}
inline void ActorInfo::init(int32 sched_id, Slice name, ObjectPool<ActorInfo>::OwnerPtr &&this_ptr, Actor *actor_ptr,
Deleter deleter, bool is_lite) {
CHECK(!is_running());
CHECK(!is_migrating());
sched_id_.store(sched_id, std::memory_order_relaxed);
actor_ = actor_ptr;
if (!is_lite) {
context_ = Scheduler::context()->this_ptr_.lock();
VLOG(actor) << "Set context " << context_.get() << " for " << name;
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}
#ifdef TD_DEBUG
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name_.assign(name.data(), name.size());
#endif
actor_->init(std::move(this_ptr));
deleter_ = deleter;
is_lite_ = is_lite;
is_running_ = false;
wait_generation_ = 0;
}
inline bool ActorInfo::is_lite() const {
return is_lite_;
}
inline void ActorInfo::set_wait_generation(uint32 wait_generation) {
wait_generation_ = wait_generation;
}
inline bool ActorInfo::must_wait(uint32 wait_generation) const {
return wait_generation_ == wait_generation || (always_wait_for_mailbox_ && !mailbox_.empty());
}
inline void ActorInfo::always_wait_for_mailbox() {
always_wait_for_mailbox_ = true;
}
inline void ActorInfo::on_actor_moved(Actor *actor_new_ptr) {
actor_ = actor_new_ptr;
}
inline void ActorInfo::clear() {
// LOG_IF(WARNING, !mailbox_.empty()) << "Destroy actor with non-empty mailbox: " << get_name()
// << format::as_array(mailbox_);
CHECK(mailbox_.empty());
CHECK(!actor_);
CHECK(!is_running());
CHECK(!is_migrating());
// NB: must be in non migrating state
// store invalid scheduler id.
sched_id_.store((1 << 30) - 1, std::memory_order_relaxed);
VLOG(actor) << "Clear context " << context_.get() << " for " << get_name();
context_.reset();
}
inline void ActorInfo::destroy_actor() {
if (!actor_) {
return;
}
switch (deleter_) {
case Deleter::Destroy:
std::default_delete<Actor>()(actor_);
break;
case Deleter::None:
break;
}
actor_ = nullptr;
mailbox_.clear();
}
template <class ActorT>
ActorOwn<ActorT> ActorInfo::transfer_ownership_to_scheduler(unique_ptr<ActorT> actor) {
CHECK(!empty());
CHECK(deleter_ == Deleter::None);
ActorT *actor_ptr = actor.release();
CHECK(actor_ == static_cast<Actor *>(actor_ptr));
actor_ = static_cast<Actor *>(actor_ptr);
deleter_ = Deleter::Destroy;
return ActorOwn<ActorT>(actor_id(actor_ptr));
}
inline bool ActorInfo::empty() const {
return actor_ == nullptr;
}
inline void ActorInfo::start_migrate(int32 to_sched_id) {
sched_id_.store(to_sched_id | (1 << 30), std::memory_order_relaxed);
}
inline std::pair<int32, bool> ActorInfo::migrate_dest_flag_atomic() const {
int32 sched_id = sched_id_.load(std::memory_order_relaxed);
return std::make_pair(sched_id & ~(1 << 30), (sched_id & (1 << 30)) != 0);
}
inline void ActorInfo::finish_migrate() {
sched_id_.store(migrate_dest(), std::memory_order_relaxed);
}
inline bool ActorInfo::is_migrating() const {
return migrate_dest_flag_atomic().second;
}
inline int32 ActorInfo::migrate_dest() const {
return migrate_dest_flag_atomic().first;
}
inline ActorId<> ActorInfo::actor_id() {
return actor_id(actor_);
}
template <class SelfT>
ActorId<SelfT> ActorInfo::actor_id(SelfT *self) {
return actor_->actor_id(self);
}
inline Actor *ActorInfo::get_actor_unsafe() {
return actor_;
}
inline const Actor *ActorInfo::get_actor_unsafe() const {
return actor_;
}
inline std::shared_ptr<ActorContext> ActorInfo::set_context(std::shared_ptr<ActorContext> context) {
CHECK(is_running());
context->this_ptr_ = context;
if (Scheduler::context()->tag_) {
context->set_tag(Scheduler::context()->tag_);
}
std::swap(context_, context);
Scheduler::context() = context_.get();
Scheduler::on_context_updated();
return context;
}
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inline std::weak_ptr<ActorContext> ActorInfo::get_context_weak_ptr() const {
return context_;
}
inline const ActorContext *ActorInfo::get_context() const {
return context_.get();
}
inline ActorContext *ActorInfo::get_context() {
return context_.get();
}
inline CSlice ActorInfo::get_name() const {
#ifdef TD_DEBUG
return name_;
#else
return "";
#endif
}
inline void ActorInfo::start_run() {
VLOG(actor) << "Start run actor: " << *this;
LOG_CHECK(!is_running_) << "Recursive call of actor " << tag("name", get_name());
is_running_ = true;
}
inline void ActorInfo::finish_run() {
is_running_ = false;
if (!empty()) {
VLOG(actor) << "Stop run actor: " << *this;
}
}
inline bool ActorInfo::is_running() const {
return is_running_;
}
inline HeapNode *ActorInfo::get_heap_node() {
return this;
}
inline const HeapNode *ActorInfo::get_heap_node() const {
return this;
}
inline ActorInfo *ActorInfo::from_heap_node(HeapNode *node) {
return static_cast<ActorInfo *>(node);
}
inline ListNode *ActorInfo::get_list_node() {
return this;
}
inline const ListNode *ActorInfo::get_list_node() const {
return this;
}
inline ActorInfo *ActorInfo::from_list_node(ListNode *node) {
return static_cast<ActorInfo *>(node);
}
} // namespace td