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CLK/Analyser/Dynamic/MultiMachine/Implementation/MultiCRTMachine.cpp
2018-02-18 16:37:07 -05:00

116 lines
3.7 KiB
C++

//
// MultiCRTMachine.cpp
// Clock Signal
//
// Created by Thomas Harte on 29/01/2018.
// Copyright © 2018 Thomas Harte. All rights reserved.
//
#include "MultiCRTMachine.hpp"
#include <condition_variable>
#include <mutex>
using namespace Analyser::Dynamic;
MultiCRTMachine::MultiCRTMachine(const std::vector<std::unique_ptr<::Machine::DynamicMachine>> &machines, std::mutex &machines_mutex) :
machines_(machines), machines_mutex_(machines_mutex), queues_(machines.size()) {
speaker_ = MultiSpeaker::create(machines);
}
void MultiCRTMachine::perform_parallel(const std::function<void(::CRTMachine::Machine *)> &function) {
// Apply a blunt force parallelisation of the machines; each run_for is dispatched
// to a separate queue and this queue will block until all are done.
volatile std::size_t outstanding_machines;
std::condition_variable condition;
std::mutex mutex;
{
std::lock_guard<std::mutex> machines_lock(machines_mutex_);
std::lock_guard<std::mutex> lock(mutex);
outstanding_machines = machines_.size();
for(std::size_t index = 0; index < machines_.size(); ++index) {
CRTMachine::Machine *crt_machine = machines_[index]->crt_machine();
queues_[index].enqueue([&mutex, &condition, crt_machine, function, &outstanding_machines]() {
if(crt_machine) function(crt_machine);
std::lock_guard<std::mutex> lock(mutex);
outstanding_machines--;
condition.notify_all();
});
}
}
std::unique_lock<std::mutex> lock(mutex);
condition.wait(lock, [&outstanding_machines] { return !outstanding_machines; });
}
void MultiCRTMachine::perform_serial(const std::function<void (::CRTMachine::Machine *)> &function) {
std::lock_guard<std::mutex> machines_lock(machines_mutex_);
for(const auto &machine: machines_) {
CRTMachine::Machine *crt_machine = machine->crt_machine();
if(crt_machine) function(crt_machine);
}
}
void MultiCRTMachine::setup_output(float aspect_ratio) {
perform_serial([=](::CRTMachine::Machine *machine) {
machine->setup_output(aspect_ratio);
});
}
void MultiCRTMachine::close_output() {
perform_serial([=](::CRTMachine::Machine *machine) {
machine->close_output();
});
}
Outputs::CRT::CRT *MultiCRTMachine::get_crt() {
std::lock_guard<std::mutex> machines_lock(machines_mutex_);
CRTMachine::Machine *crt_machine = machines_.front()->crt_machine();
return crt_machine ? crt_machine->get_crt() : nullptr;
}
Outputs::Speaker::Speaker *MultiCRTMachine::get_speaker() {
return speaker_;
}
void MultiCRTMachine::run_for(const Cycles cycles) {
perform_parallel([=](::CRTMachine::Machine *machine) {
if(machine->get_confidence() >= 0.01f) machine->run_for(cycles);
});
if(delegate_) delegate_->multi_crt_did_run_machines();
}
double MultiCRTMachine::get_clock_rate() {
// TODO: something smarter than this? Not all clock rates will necessarily be the same.
std::lock_guard<std::mutex> machines_lock(machines_mutex_);
CRTMachine::Machine *crt_machine = machines_.front()->crt_machine();
return crt_machine ? crt_machine->get_clock_rate() : 0.0;
}
bool MultiCRTMachine::get_clock_is_unlimited() {
std::lock_guard<std::mutex> machines_lock(machines_mutex_);
CRTMachine::Machine *crt_machine = machines_.front()->crt_machine();
return crt_machine ? crt_machine->get_clock_is_unlimited() : false;
}
void MultiCRTMachine::did_change_machine_order() {
if(speaker_) {
speaker_->set_new_front_machine(machines_.front().get());
}
}
void MultiCRTMachine::set_delegate(::CRTMachine::Machine::Delegate *delegate) {
// TODO:
}
void MultiCRTMachine::machine_did_change_clock_rate(Machine *machine) {
// TODO: consider passing along.
}
void MultiCRTMachine::machine_did_change_clock_is_unlimited(Machine *machine) {
// TODO: consider passing along.
}