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CLK/Analyser/Dynamic/MultiMachine/Implementation/MultiCRTMachine.cpp

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//
// 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::recursive_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<decltype(machines_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<decltype(machines_mutex_)> machines_lock(machines_mutex_);
for(const auto &machine: machines_) {
CRTMachine::Machine *const crt_machine = machine->crt_machine();
if(crt_machine) function(crt_machine);
}
}
void MultiCRTMachine::set_scan_target(Outputs::Display::ScanTarget *scan_target) {
scan_target_ = scan_target;
CRTMachine::Machine *const crt_machine = machines_.front()->crt_machine();
if(crt_machine) crt_machine->set_scan_target(scan_target);
}
Outputs::Display::ScanStatus MultiCRTMachine::get_scan_status() const {
CRTMachine::Machine *const crt_machine = machines_.front()->crt_machine();
if(crt_machine) crt_machine->get_scan_status();
return Outputs::Display::ScanStatus();
}
Outputs::Speaker::Speaker *MultiCRTMachine::get_speaker() {
return speaker_;
}
void MultiCRTMachine::run_for(Time::Seconds duration) {
perform_parallel([duration](::CRTMachine::Machine *machine) {
if(machine->get_confidence() >= 0.01f) machine->run_for(duration);
});
if(delegate_) delegate_->multi_crt_did_run_machines();
}
void MultiCRTMachine::did_change_machine_order() {
if(scan_target_) scan_target_->will_change_owner();
perform_serial([](::CRTMachine::Machine *machine) {
machine->set_scan_target(nullptr);
});
CRTMachine::Machine *const crt_machine = machines_.front()->crt_machine();
if(crt_machine) crt_machine->set_scan_target(scan_target_);
if(speaker_) {
speaker_->set_new_front_machine(machines_.front().get());
}
}