Merge pull request #4231 from ZappoMan/crashonexit

BUG FIXES: Crash on Exit with partially loaded scene & (near)-infinite loop in skipForward physics

interface/src/Application.cpp

@@ -73,6 +73,7 @@
 #include <PhysicsEngine.h>
 #include <ProgramObject.h>
 #include <ResourceCache.h>
+#include <ScriptCache.h>
 #include <SettingHandle.h>
 #include <SoundCache.h>
 #include <TextRenderer.h>
@@ -188,6 +189,7 @@ bool setupEssentials(int& argc, char** argv) {
     auto jsConsole = DependencyManager::set<StandAloneJSConsole>();
     auto dialogsManager = DependencyManager::set<DialogsManager>();
     auto bandwidthRecorder = DependencyManager::set<BandwidthRecorder>();
+    auto resouceCacheSharedItems = DependencyManager::set<ResouceCacheSharedItems>();
 #if defined(Q_OS_MAC) || defined(Q_OS_WIN)
     auto speechRecognizer = DependencyManager::set<SpeechRecognizer>();
 #endif
@@ -514,6 +516,11 @@ Application::~Application() {
     _myAvatar = NULL;
     
     DependencyManager::destroy<GLCanvas>();
+    DependencyManager::destroy<AnimationCache>();
+    DependencyManager::destroy<TextureCache>();
+    DependencyManager::destroy<GeometryCache>();
+    DependencyManager::destroy<ScriptCache>();
+    DependencyManager::destroy<SoundCache>();
 }
 
 void Application::initializeGL() {

libraries/entities/src/EntityItem.cpp

@@ -548,7 +548,10 @@ int EntityItem::readEntityDataFromBuffer(const unsigned char* data, int bytesLef
             // is sending us data with a known "last simulated" time. That time is likely in the past, and therefore
             // this "new" data is actually slightly out of date. We calculate the time we need to skip forward and
             // use our simulation helper routine to get a best estimate of where the entity should be.
-            float skipTimeForward = (float)(now - _lastSimulated) / (float)(USECS_PER_SECOND);
+            const float MIN_TIME_SKIP = 0.0f;
+            const float MAX_TIME_SKIP = 1.0f; // in seconds
+            float skipTimeForward = glm::clamp((float)(now - _lastSimulated) / (float)(USECS_PER_SECOND), 
+                                        MIN_TIME_SKIP, MAX_TIME_SKIP);
             if (skipTimeForward > 0.0f) {
                 #ifdef WANT_DEBUG
                     qDebug() << "skipTimeForward:" << skipTimeForward;

libraries/networking/src/ResourceCache.cpp

@@ -112,27 +112,30 @@ void ResourceCache::reserveUnusedResource(qint64 resourceSize) {
 }
 
 void ResourceCache::attemptRequest(Resource* resource) {
+    auto sharedItems = DependencyManager::get<ResouceCacheSharedItems>();
     if (_requestLimit <= 0) {
         // wait until a slot becomes available
-        _pendingRequests.append(resource);
+        sharedItems->_pendingRequests.append(resource);
         return;
     }
     _requestLimit--;
-    _loadingRequests.append(resource);
+    sharedItems->_loadingRequests.append(resource);
     resource->makeRequest();
 }
 
 void ResourceCache::requestCompleted(Resource* resource) {
-    _loadingRequests.removeOne(resource);
+    
+    auto sharedItems = DependencyManager::get<ResouceCacheSharedItems>();
+    sharedItems->_loadingRequests.removeOne(resource);
     _requestLimit++;
     
     // look for the highest priority pending request
     int highestIndex = -1;
     float highestPriority = -FLT_MAX;
-    for (int i = 0; i < _pendingRequests.size(); ) {
-        Resource* resource = _pendingRequests.at(i).data();
+    for (int i = 0; i < sharedItems->_pendingRequests.size(); ) {
+        Resource* resource = sharedItems->_pendingRequests.at(i).data();
         if (!resource) {
-            _pendingRequests.removeAt(i);
+            sharedItems->_pendingRequests.removeAt(i);
             continue;
         }
         float priority = resource->getLoadPriority();
@@ -143,16 +146,13 @@ void ResourceCache::requestCompleted(Resource* resource) {
         i++;
     }
     if (highestIndex >= 0) {
-        attemptRequest(_pendingRequests.takeAt(highestIndex));
+        attemptRequest(sharedItems->_pendingRequests.takeAt(highestIndex));
     }
 }
 
 const int DEFAULT_REQUEST_LIMIT = 10;
 int ResourceCache::_requestLimit = DEFAULT_REQUEST_LIMIT;
 
-QList<QPointer<Resource> > ResourceCache::_pendingRequests;
-QList<Resource*> ResourceCache::_loadingRequests;
-
 Resource::Resource(const QUrl& url, bool delayLoad) :
     _url(url),
     _request(url) {

libraries/networking/src/ResourceCache.h

@@ -22,6 +22,8 @@
 #include <QUrl>
 #include <QWeakPointer>
 
+#include <DependencyManager.h>
+
 class QNetworkReply;
 class QTimer;
 
@@ -40,6 +42,21 @@ static const qint64 DEFAULT_UNUSED_MAX_SIZE = 1024 * BYTES_PER_MEGABYTES;
 static const qint64 MIN_UNUSED_MAX_SIZE = 0;
 static const qint64 MAX_UNUSED_MAX_SIZE = 10 * BYTES_PER_GIGABYTES;
 
+// We need to make sure that these items are available for all instances of
+// ResourceCache derived classes. Since we can't count on the ordering of
+// static members destruction, we need to use this Dependency manager implemented
+// object instead
+class ResouceCacheSharedItems : public Dependency  {
+    SINGLETON_DEPENDENCY
+public:
+    QList<QPointer<Resource> > _pendingRequests;
+    QList<Resource*> _loadingRequests;
+private:
+    ResouceCacheSharedItems() { }
+    virtual ~ResouceCacheSharedItems() { }
+};
+
+
 /// Base class for resource caches.
 class ResourceCache : public QObject {
     Q_OBJECT
@@ -51,9 +68,11 @@ public:
     void setUnusedResourceCacheSize(qint64 unusedResourcesMaxSize);
     qint64 getUnusedResourceCacheSize() const { return _unusedResourcesMaxSize; }
 
-    static const QList<Resource*>& getLoadingRequests() { return _loadingRequests; }
+    static const QList<Resource*>& getLoadingRequests() 
+        { return DependencyManager::get<ResouceCacheSharedItems>()->_loadingRequests; }
 
-    static int getPendingRequestCount() { return _pendingRequests.size(); }
+    static int getPendingRequestCount() 
+        { return DependencyManager::get<ResouceCacheSharedItems>()->_pendingRequests.size(); }
 
     ResourceCache(QObject* parent = NULL);
     virtual ~ResourceCache();
@@ -90,8 +109,6 @@ private:
     int _lastLRUKey = 0;
     
     static int _requestLimit;
-    static QList<QPointer<Resource> > _pendingRequests;
-    static QList<Resource*> _loadingRequests;
 };
 
 /// Base class for resources.