tdlight/td/telegram/files/ResourceManager.h
2021-09-19 00:47:05 +03:00

70 lines
1.7 KiB
C++

//
// 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/telegram/files/FileLoaderActor.h"
#include "td/telegram/files/ResourceState.h"
#include "td/actor/actor.h"
#include "td/utils/Container.h"
#include "td/utils/Heap.h"
#include <utility>
namespace td {
class ResourceManager final : public Actor {
public:
enum class Mode : int32 { Baseline, Greedy };
explicit ResourceManager(Mode mode) : mode_(mode) {
}
// use through ActorShared
void update_priority(int8 priority);
void update_resources(const ResourceState &resource_state);
void register_worker(ActorShared<FileLoaderActor> callback, int8 priority);
static constexpr int64 MAX_RESOURCE_LIMIT = 1 << 21;
private:
Mode mode_;
using NodeId = uint64;
struct Node final : public HeapNode {
NodeId node_id;
ResourceState resource_state_;
ActorShared<FileLoaderActor> callback_;
HeapNode *as_heap_node() {
return static_cast<HeapNode *>(this);
}
static Node *from_heap_node(HeapNode *heap_node) {
return static_cast<Node *>(heap_node);
}
};
Container<unique_ptr<Node>> nodes_container_;
vector<std::pair<int8, NodeId>> to_xload_;
KHeap<int64> by_estimated_extra_;
ResourceState resource_state_;
ActorShared<> parent_;
bool stop_flag_ = false;
void hangup_shared() final;
void loop() final;
void add_to_heap(Node *node);
bool satisfy_node(NodeId file_node_id);
void add_node(NodeId node_id, int8 priority);
bool remove_node(NodeId node_id);
};
} // namespace td