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Merge pull request #435 from HifiExperiments/model

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Possible fix for entity server crash
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kasenvr 2020-07-04 17:38:21 -04:00 committed by GitHub
commit 2cc5679ca2
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 45 additions and 19 deletions
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10
assignment-client/src/entities/EntityServer.cpp
View file

@ -370,16 +370,18 @@ void EntityServer::entityFilterAdded(EntityItemID id, bool success) {
void EntityServer::nodeAdded(SharedNodePointer node) {
EntityTreePointer tree = std::static_pointer_cast<EntityTree>(_tree);
tree->knowAvatarID(node->getUUID());
if (tree) {
tree->knowAvatarID(node->getUUID());
}
OctreeServer::nodeAdded(node);
}
void EntityServer::nodeKilled(SharedNodePointer node) {
EntityTreePointer tree = std::static_pointer_cast<EntityTree>(_tree);
tree->withWriteLock([&] {
if (tree) {
tree->deleteDescendantsOfAvatar(node->getUUID());
});
tree->forgetAvatarID(node->getUUID());
tree->forgetAvatarID(node->getUUID());
}
OctreeServer::nodeKilled(node);
}

46
libraries/entities/src/EntityTree.cpp
View file

@ -2233,15 +2233,24 @@ void EntityTree::fixupNeedsParentFixups() {
}
entity->postParentFixup();
} else if (getIsServer() || _avatarIDs.contains(entity->getParentID())) {
// this is a child of an avatar, which the entity server will never have
// a SpatiallyNestable object for. Add it to a list for cleanup when the avatar leaves.
if (!_childrenOfAvatars.contains(entity->getParentID())) {
_childrenOfAvatars[entity->getParentID()] = QSet<EntityItemID>();
} else {
bool needsUpdate = getIsServer();
if (!needsUpdate) {
std::lock_guard<std::mutex> lock(_avatarIDsLock);
needsUpdate = _avatarIDs.contains(entity->getParentID());
}
if (needsUpdate) {
std::lock_guard<std::mutex> lock(_childrenOfAvatarsLock);
// this is a child of an avatar, which the entity server will never have
// a SpatiallyNestable object for. Add it to a list for cleanup when the avatar leaves.
if (!_childrenOfAvatars.contains(entity->getParentID())) {
_childrenOfAvatars[entity->getParentID()] = QSet<EntityItemID>();
}
_childrenOfAvatars[entity->getParentID()] += entity->getEntityItemID();
doMove = true;
iter.remove(); // and pull it out of the list
}
_childrenOfAvatars[entity->getParentID()] += entity->getEntityItemID();
doMove = true;
iter.remove(); // and pull it out of the list
}
if (queryAACubeSuccess && doMove) {
@ -2261,8 +2270,19 @@ void EntityTree::fixupNeedsParentFixups() {
}
}
void EntityTree::deleteDescendantsOfAvatar(QUuid avatarID) {
QHash<QUuid, QSet<EntityItemID>>::const_iterator itr = _childrenOfAvatars.constFind(avatarID);
void EntityTree::knowAvatarID(const QUuid& avatarID) {
std::lock_guard<std::mutex> lock(_avatarIDsLock);
_avatarIDs += avatarID;
}
void EntityTree::forgetAvatarID(const QUuid& avatarID) {
std::lock_guard<std::mutex> lock(_avatarIDsLock);
_avatarIDs -= avatarID;
}
void EntityTree::deleteDescendantsOfAvatar(const QUuid& avatarID) {
std::lock_guard<std::mutex> lock(_childrenOfAvatarsLock);
auto itr = _childrenOfAvatars.find(avatarID);
if (itr != _childrenOfAvatars.end()) {
if (!itr.value().empty()) {
std::vector<EntityItemID> ids;
@ -2280,8 +2300,10 @@ void EntityTree::deleteDescendantsOfAvatar(QUuid avatarID) {
void EntityTree::removeFromChildrenOfAvatars(EntityItemPointer entity) {
QUuid avatarID = entity->getParentID();
if (_childrenOfAvatars.contains(avatarID)) {
_childrenOfAvatars[avatarID].remove(entity->getID());
std::lock_guard<std::mutex> lock(_childrenOfAvatarsLock);
auto itr = _childrenOfAvatars.find(avatarID);
if (itr != _childrenOfAvatars.end()) {
itr.value().remove(entity->getID());
}
}

8
libraries/entities/src/EntityTree.h
View file

@ -240,9 +240,9 @@ public:
Q_INVOKABLE int getJointIndex(const QUuid& entityID, const QString& name) const;
Q_INVOKABLE QStringList getJointNames(const QUuid& entityID) const;
void knowAvatarID(QUuid avatarID) { _avatarIDs += avatarID; }
void forgetAvatarID(QUuid avatarID) { _avatarIDs -= avatarID; }
void deleteDescendantsOfAvatar(QUuid avatarID);
void knowAvatarID(const QUuid& avatarID);
void forgetAvatarID(const QUuid& avatarID);
void deleteDescendantsOfAvatar(const QUuid& avatarID);
void removeFromChildrenOfAvatars(EntityItemPointer entity);
void addToNeedsParentFixupList(EntityItemPointer entity);
@ -365,8 +365,10 @@ protected:
QVector<EntityItemWeakPointer> _needsParentFixup; // entites with a parentID but no (yet) known parent instance
mutable QReadWriteLock _needsParentFixupLock;
std::mutex _avatarIDsLock;
// we maintain a list of avatarIDs to notice when an entity is a child of one.
QSet<QUuid> _avatarIDs; // IDs of avatars connected to entity server
std::mutex _childrenOfAvatarsLock;
QHash<QUuid, QSet<EntityItemID>> _childrenOfAvatars; // which entities are children of which avatars
float _maxTmpEntityLifetime { DEFAULT_MAX_TMP_ENTITY_LIFETIME };