attempt at making remoteDirModel less CPU intentive. Remove potential deadlock source in SearchDialog.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4155 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/RemoteDirModel.cpp

@@ -26,6 +26,7 @@
 #include <QMimeData>
 #include <QTimer>
 
+#include <gui/RsAutoUpdatePage.h>
 #include "RemoteDirModel.h"
 #include <retroshare/rsfiles.h>
 #include <retroshare/rstypes.h>
@@ -45,10 +46,20 @@ RetroshareDirModel::RetroshareDirModel(bool mode, QObject *parent)
          ageIndicator(IND_ALWAYS),
          RemoteMode(mode), nIndex(1), indexSet(1) /* ass zero index cant be used */
 {
+	_visible = false ;
+	_needs_update = true ;
 	setSupportedDragActions(Qt::CopyAction);
 	treeStyle();
 }
 
+void RetroshareDirModel::update()
+{
+	if(_needs_update)
+	{
+		preMods() ;
+		postMods() ;
+	}
+}
 void RetroshareDirModel::treeStyle()
 {
 	categoryIcon.addPixmap(QPixmap(":/images/folder16.png"),
@@ -1293,6 +1304,8 @@ TreeStyle_RDM::~TreeStyle_RDM()
 {
 }
 void FlatStyle_RDM::postMods()
+{
+	if(visible())
 	{
 		_ref_entries.clear() ;
 		_ref_stack.clear() ;
@@ -1300,11 +1313,21 @@ void FlatStyle_RDM::postMods()
 		_ref_stack.push_back(NULL) ; // init the stack with the topmost parent directory
 
 		std::cerr << "FlatStyle_RDM::postMods(): cleared ref entries" << std::endl;
+		_needs_update = false ;
 		updateRefs() ;
 	}
+	else
+		_needs_update = true ;
+}
 
 void FlatStyle_RDM::updateRefs()
 {
+	if(RsAutoUpdatePage::eventsLocked())
+	{
+		_needs_update = true ;
+		return ;
+	}
+
 	RetroshareDirModel::preMods() ;
 
 	static const uint32_t MAX_REFS_PER_SECOND = 2000 ;
@@ -1332,12 +1355,20 @@ void FlatStyle_RDM::updateRefs()
 		}
 		if(++nb_treated_refs > MAX_REFS_PER_SECOND) 	// we've done enough, let's give back hand to 
 		{															// the user and setup a timer to finish the job later.
-			QTimer::singleShot(500,this,SLOT(updateRefs())) ;
+			_needs_update = true ;
+
+			if(visible())
+				QTimer::singleShot(2000,this,SLOT(updateRefs())) ;
+			else
+				std::cerr << "Not visible: suspending update"<< std::endl;
 			break ;
 		}
 	}
 	std::cerr << "reference tab contains " << _ref_entries.size() << " files" << std::endl;
 
+	if(_ref_stack.empty())
+		_needs_update = false ;
+
 	RetroshareDirModel::postMods() ;
 }
 

retroshare-gui/src/gui/RemoteDirModel.h

@@ -50,6 +50,9 @@ class RetroshareDirModel : public QAbstractItemModel
 		virtual void preMods();
 		virtual void postMods();
 
+		void setVisible(bool b) { _visible = b ; }
+		bool visible() { return _visible ;}
+
 		/* Callback from GUI */
 		void downloadSelected(const QModelIndexList &list);
 
@@ -62,6 +65,7 @@ class RetroshareDirModel : public QAbstractItemModel
 		void changeAgeIndicator(uint32_t indicator) { ageIndicator = indicator; }
 
 		bool requestDirDetails(void *ref,DirDetails& details,uint32_t flags) const;
+		void update() ;
 	public:
 
 		virtual QMimeData * mimeData ( const QModelIndexList & indexes ) const;
@@ -69,6 +73,9 @@ class RetroshareDirModel : public QAbstractItemModel
 		virtual QVariant data(const QModelIndex &index, int role) const;
 
 	protected:
+		bool _visible ;
+		bool _needs_update ;
+
 		void treeStyle();
 		void downloadDirectory(const DirDetails & details, int prefixLen);
 		static QString getFlagsString(uint32_t) ;

retroshare-gui/src/gui/SearchDialog.cpp

@@ -27,6 +27,7 @@
 #include "RetroShareLink.h"
 #include "msgs/MessageComposer.h"
 #include "gui/RSHumanReadableDelegate.h"
+#include "gui/RsAutoUpdatePage.h"
 #include "settings/rsharesettings.h"
 #include "advsearch/advancedsearchdialog.h"
 
@@ -672,6 +673,15 @@ void SearchDialog::updateFiles(qulonglong search_id,FileDetail file)
 
 void SearchDialog::processResultQueue()
 {
+	// This avoids a deadlock when gpg callback asks a passwd.
+	// Send again in 10 secs.
+	//
+	if(RsAutoUpdatePage::eventsLocked())
+	{
+		QTimer::singleShot(10000,this,SLOT(processResultQueue())) ; 
+		return ;
+	}
+
 	int nb_treated_elements = 0 ;
 
 	while(!searchResultsQueue.empty() && nb_treated_elements++ < 500)

retroshare-gui/src/gui/SharedFilesDialog.cpp

@@ -88,7 +88,7 @@ private:
 
 /** Constructor */
 SharedFilesDialog::SharedFilesDialog(QWidget *parent)
-: RsAutoUpdatePage(1000,parent)
+: RsAutoUpdatePage(1000,parent),model(NULL)
 {
 	/* Invoke the Qt Designer generated object setup routine */
 	ui.setupUi(this);
@@ -235,6 +235,21 @@ SharedFilesDialog::SharedFilesDialog(QWidget *parent)
   connect(openfolderAct, SIGNAL(triggered()), this, SLOT(openfolder()));
 }
 
+void SharedFilesDialog::hideEvent(QHideEvent *)
+{
+	if(model!=NULL)
+		model->setVisible(false) ;
+	//std::cerr << "Hidden!"<< std::endl;
+}
+void SharedFilesDialog::showEvent(QShowEvent *)
+{
+	if(model!=NULL)
+	{
+		model->setVisible(true) ;
+		model->update() ;
+	}
+	//std::cerr << "Shown!"<< std::endl;
+}
 SharedFilesDialog::~SharedFilesDialog()
 {
     // save settings
@@ -279,6 +294,9 @@ void SharedFilesDialog::changeCurrentViewModel(int c)
 	disconnect( ui.remoteDirTreeView, SIGNAL( collapsed(const QModelIndex & ) ), 0, 0 );
 	disconnect( ui.remoteDirTreeView, SIGNAL(  expanded(const QModelIndex & ) ), 0, 0 );
 
+	if(model!=NULL)
+		model->setVisible(false) ;
+
 	if(c == 0)
 	{
 		model = tree_model ;
@@ -304,8 +322,11 @@ void SharedFilesDialog::changeCurrentViewModel(int c)
 #endif
 	}
 
-	model->preMods();
+	if(isVisible())
-	model->postMods();
+	{
+		model->setVisible(true) ;
+		model->update() ;
+	}
 
 	connect( ui.remoteDirTreeView, SIGNAL( collapsed(const QModelIndex & ) ), model, SLOT(  collapsed(const QModelIndex & ) ) );
 	connect( ui.remoteDirTreeView, SIGNAL(  expanded(const QModelIndex & ) ), model, SLOT(   expanded(const QModelIndex & ) ) );
@@ -682,7 +703,6 @@ void SharedFilesDialog::openfolder()
 
 void  SharedFilesDialog::preModDirectories(bool update_local)
 {
-
 	//std::cerr << "SharedFilesDialog::preModDirectories called with update_local = " << update_local << std::endl ;
 	if (update_local)
 		localModel->preMods();

retroshare-gui/src/gui/SharedFilesDialog.h

@@ -39,6 +39,8 @@ public:
   ~SharedFilesDialog();
 
   virtual void updatePage() { checkUpdate() ; }
+  virtual void hideEvent(QHideEvent *) ;
+  virtual void showEvent(QShowEvent *) ;
 
 
 private slots: