70 lines
1.7 KiB
C++
70 lines
1.7 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2021
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/telegram/files/FileLoaderActor.h"
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#include "td/telegram/files/ResourceState.h"
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#include "td/actor/actor.h"
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#include "td/utils/Container.h"
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#include "td/utils/Heap.h"
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#include <utility>
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namespace td {
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class ResourceManager final : public Actor {
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public:
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enum class Mode : int32 { Baseline, Greedy };
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explicit ResourceManager(Mode mode) : mode_(mode) {
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}
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// use through ActorShared
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void update_priority(int8 priority);
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void update_resources(const ResourceState &resource_state);
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void register_worker(ActorShared<FileLoaderActor> callback, int8 priority);
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static constexpr int64 MAX_RESOURCE_LIMIT = 1 << 21;
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private:
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Mode mode_;
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using NodeId = uint64;
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struct Node final : public HeapNode {
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NodeId node_id = 0;
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ResourceState resource_state_;
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ActorShared<FileLoaderActor> callback_;
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HeapNode *as_heap_node() {
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return static_cast<HeapNode *>(this);
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}
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static Node *from_heap_node(HeapNode *heap_node) {
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return static_cast<Node *>(heap_node);
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}
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};
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Container<unique_ptr<Node>> nodes_container_;
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vector<std::pair<int8, NodeId>> to_xload_;
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KHeap<int64> by_estimated_extra_;
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ResourceState resource_state_;
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ActorShared<> parent_;
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bool stop_flag_ = false;
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void hangup_shared() final;
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void loop() final;
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void add_to_heap(Node *node);
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bool satisfy_node(NodeId file_node_id);
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void add_node(NodeId node_id, int8 priority);
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bool remove_node(NodeId node_id);
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};
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} // namespace td
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