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96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
//
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// MultiCRTMachine.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 29/01/2018.
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// Copyright © 2018 Thomas Harte. All rights reserved.
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//
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#ifndef MultiCRTMachine_hpp
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#define MultiCRTMachine_hpp
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#include "../../../../Concurrency/AsyncTaskQueue.hpp"
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#include "../../../../Machines/CRTMachine.hpp"
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#include "../../../../Machines/DynamicMachine.hpp"
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#include "MultiSpeaker.hpp"
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#include <memory>
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#include <mutex>
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#include <vector>
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namespace Analyser {
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namespace Dynamic {
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/*!
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Provides a class that multiplexes the CRT machine interface to multiple machines.
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Keeps a reference to the original vector of machines; will access it only after
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acquiring a supplied mutex. The owner should also call did_change_machine_order()
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if the order of machines changes.
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*/
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class MultiCRTMachine: public CRTMachine::Machine, public CRTMachine::Machine::Delegate {
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public:
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MultiCRTMachine(const std::vector<std::unique_ptr<::Machine::DynamicMachine>> &machines, std::mutex &machines_mutex);
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/*!
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Informs the MultiCRTMachine that the order of machines has changed; the MultiCRTMachine
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uses this as an opportunity to synthesis any CRTMachine::Machine::Delegate messages that
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are necessary to bridge the gap between one machine and the next.
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*/
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void did_change_machine_order();
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/*!
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Provides a mechanism by which a delegate can be informed each time a call to run_for has
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been received.
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*/
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struct Delegate {
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virtual void multi_crt_did_run_machines() = 0;
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};
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/// Sets @c delegate as the receiver of delegate messages.
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void set_delegate(Delegate *delegate) {
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delegate_ = delegate;
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}
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// Below is the standard CRTMachine::Machine interface; see there for documentation.
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void setup_output(float aspect_ratio) override;
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void close_output() override;
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Outputs::CRT::CRT *get_crt() override;
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Outputs::Speaker::Speaker *get_speaker() override;
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void run_for(const Cycles cycles) override;
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double get_clock_rate() override;
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bool get_clock_is_unlimited() override;
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void set_delegate(::CRTMachine::Machine::Delegate *delegate) override;
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private:
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// CRTMachine::Machine::Delegate
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void machine_did_change_clock_rate(Machine *machine) override;
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void machine_did_change_clock_is_unlimited(Machine *machine) override;
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const std::vector<std::unique_ptr<::Machine::DynamicMachine>> &machines_;
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std::mutex &machines_mutex_;
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std::vector<Concurrency::AsyncTaskQueue> queues_;
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MultiSpeaker *speaker_ = nullptr;
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Delegate *delegate_ = nullptr;
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/*!
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Performs a parallel for operation across all machines, performing the supplied
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function on each and returning only once all applications have completed.
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No guarantees are extended as to which thread operations will occur on.
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*/
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void perform_parallel(const std::function<void(::CRTMachine::Machine *)> &);
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/*!
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Performs a serial for operation across all machines, performing the supplied
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function on each on the calling thread.
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*/
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void perform_serial(const std::function<void(::CRTMachine::Machine *)> &);
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};
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}
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}
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#endif /* MultiCRTMachine_hpp */
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