121 lines
4.1 KiB
C++
121 lines
4.1 KiB
C++
#ifndef NASALEMESARYINTERFACE_INCLUDED
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#define NASALEMESARYINTERFACE_INCLUDED 1
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// Nasal Emesary receipient interface.
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//
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// Copyright (C) 2019 Richard Harrison rjh@zaretto.com
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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#include <simgear/nasal/cppbind/NasalHash.hxx>
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#include <simgear/nasal/cppbind/Ghost.hxx>
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#include <simgear/math/SGMath.hxx>
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#include <simgear/misc/sg_path.hxx>
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#include <simgear/emesary/Emesary.hxx>
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#include <simgear/emesary/notifications.hxx>
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#include <simgear/debug/logstream.hxx>
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#include <simgear/threads/SGThread.hxx>
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#include <mutex>
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#include <condition_variable>
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#include <atomic>
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namespace nasal
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{
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extern"C" {
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extern int GCglobalAlloc();
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extern int naGarbageCollect();
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// these are used by the detailed debug in the Nasal GC.
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SGTimeStamp global_timestamp;
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void global_stamp() {
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global_timestamp.stamp();
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}
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extern int global_elapsedUSec()
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{
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return global_timestamp.elapsedUSec();
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}
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}
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class ThreadedGarbageCollector : public SGExclusiveThread {
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public:
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ThreadedGarbageCollector() : SGExclusiveThread() {}
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virtual ~ThreadedGarbageCollector() {}
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virtual int process(){
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return naGarbageCollect();
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}
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};
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class NasalMainLoopRecipient : public simgear::Emesary::IReceiver {
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public:
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NasalMainLoopRecipient() : receiveCount(0), Active(false), CanWait(false) {
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simgear::Emesary::GlobalTransmitter::instance()->Register(*this);
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}
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virtual ~NasalMainLoopRecipient() {
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simgear::Emesary::GlobalTransmitter::instance()->DeRegister(*this);
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}
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std::atomic<int> receiveCount;
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virtual simgear::Emesary::ReceiptStatus Receive(simgear::Emesary::INotification &n)
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{
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simgear::Notifications::MainLoopNotification *mln = dynamic_cast<simgear::Notifications::MainLoopNotification *>(&n);
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if (mln) {
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switch (mln->GetValue()) {
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case simgear::Notifications::MainLoopNotification::Type::Begin:
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if (gct.is_running()) {
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if (Active && CanWait)
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gct.awaitCompletion();
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else
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gct.clearAwaitCompletionTime();
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}
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break;
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case simgear::Notifications::MainLoopNotification::Type::End:
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if (Active) {
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if (gct.is_running())
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gct.release();
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}
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break;
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case simgear::Notifications::MainLoopNotification::Type::Started:
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gct.ensure_running();
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break;
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case simgear::Notifications::MainLoopNotification::Type::Stopped:
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gct.terminate();
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break;
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}
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return simgear::Emesary::ReceiptStatusOK;
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}
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auto *gccn = dynamic_cast<simgear::Notifications::NasalGarbageCollectionConfigurationNotification *>(&n);
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if (gccn) {
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CanWait = gccn->GetCanWait();
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Active = gccn->GetActive();
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return simgear::Emesary::ReceiptStatusOK;
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}
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return simgear::Emesary::ReceiptStatusNotProcessed;
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}
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protected:
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bool CanWait;
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bool Active;
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ThreadedGarbageCollector gct;
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};
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} // namespace nasal
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#endif
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