From 463322c288d57072a247f761444d0cd72b6cf8e0 Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Mon, 14 Oct 2002 21:19:43 +0000
Subject: [PATCH] Added methods GetEventQueue() and App() (static). Added a
 sanity event for checking the roster for killed apps.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1517 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/servers/registrar/Registrar.cpp | 52 ++++++++++++++++++++++++++---
 src/servers/registrar/Registrar.h   |  6 ++++
 2 files changed, 53 insertions(+), 5 deletions(-)

diff --git a/src/servers/registrar/Registrar.cpp b/src/servers/registrar/Registrar.cpp
index 5e28c7863b..89425a42b8 100644
--- a/src/servers/registrar/Registrar.cpp
+++ b/src/servers/registrar/Registrar.cpp
@@ -9,13 +9,12 @@
 
 #include "ClipboardHandler.h"
 #include "EventQueue.h"
+#include "MessageEvent.h"
 #include "MessageRunnerManager.h"
 #include "MIMEManager.h"
 #include "Registrar.h"
 #include "TRoster.h"
 
-static const char *kEventQueueName = "timer_thread";
-
 /*!
 	\class Registrar
 	\brief The application class of the registrar.
@@ -23,6 +22,12 @@ static const char *kEventQueueName = "timer_thread";
 	Glues the registrar services together and dispatches the roster messages.
 */
 
+//! Name of the event queue.
+static const char *kEventQueueName = "timer_thread";
+
+//! Time interval between two roster sanity checks (1 s).
+static const bigtime_t kRosterSanityEventInterval = 1000000LL;
+
 // constructor
 /*!	\brief Creates the registrar application class.
 */
@@ -32,7 +37,8 @@ Registrar::Registrar()
 		   fClipboardHandler(NULL),
 		   fMIMEManager(NULL),
 		   fEventQueue(NULL),
-		   fMessageRunnerManager(NULL)
+		   fMessageRunnerManager(NULL),
+		   fSanityEvent(NULL)
 {
 	FUNCTION_START();
 }
@@ -50,11 +56,15 @@ Registrar::~Registrar()
 	fEventQueue->Die();
 	delete fMessageRunnerManager;
 	delete fEventQueue;
+	delete fSanityEvent;
 	fMIMEManager->Lock();
 	fMIMEManager->Quit();
 	RemoveHandler(fClipboardHandler);
 	delete fClipboardHandler;
 	delete fRoster;
+	// Invalidate the global be_roster, so that the BApplication destructor
+	// won't dead-lock when sending a message to itself.
+	BPrivate::init_registrar_roster(BMessenger(), BMessenger());
 	FUNCTION_END();
 }
 
@@ -66,7 +76,7 @@ Registrar::~Registrar()
 void
 Registrar::MessageReceived(BMessage *message)
 {
-	FUNCTION_START();
+//	FUNCTION_START();
 	switch (message->what) {
 		// general requests
 		case B_REG_GET_MIME_MESSENGER:
@@ -131,11 +141,17 @@ Registrar::MessageReceived(BMessage *message)
 		case B_REG_GET_MESSAGE_RUNNER_INFO:
 			fMessageRunnerManager->HandleGetRunnerInfo(message);
 			break;
+		// internal messages
+		case B_REG_ROSTER_SANITY_EVENT:
+			fRoster->CheckSanity();
+			fSanityEvent->SetTime(system_time() + kRosterSanityEventInterval);
+			fEventQueue->AddEvent(fSanityEvent);
+			break;
 		default:
 			BApplication::MessageReceived(message);
 			break;
 	}
-	FUNCTION_END();
+//	FUNCTION_END();
 }
 
 // ReadyToRun
@@ -161,6 +177,11 @@ Registrar::ReadyToRun()
 	// init the global be_roster
 	BPrivate::init_registrar_roster(be_app_messenger,
 									BMessenger(NULL, fMIMEManager));
+	// create and schedule the sanity message event
+	fSanityEvent = new MessageEvent(system_time() + kRosterSanityEventInterval,
+									this, B_REG_ROSTER_SANITY_EVENT);
+	fSanityEvent->SetAutoDelete(false);
+	fEventQueue->AddEvent(fSanityEvent);
 	FUNCTION_END();
 }
 
@@ -176,6 +197,27 @@ Registrar::QuitRequested()
 	return BApplication::QuitRequested();
 }
 
+// GetEventQueue
+/*!	\brief Returns the registrar's event queue.
+	\return The registrar's event queue.
+*/
+EventQueue*
+Registrar::GetEventQueue() const
+{
+	return fEventQueue;
+}
+
+// App
+/*!	\brief Returns the Registrar application object.
+	\return The Registrar application object.
+*/
+Registrar*
+Registrar::App()
+{
+	return dynamic_cast<Registrar*>(be_app);
+}
+
+
 // init_registrar_roster
 /*!	\brief Initializes the global \a be_roster.
 
diff --git a/src/servers/registrar/Registrar.h b/src/servers/registrar/Registrar.h
index 6ee7a74753..1d701ec923 100644
--- a/src/servers/registrar/Registrar.h
+++ b/src/servers/registrar/Registrar.h
@@ -30,6 +30,7 @@
 
 class ClipboardHandler;
 class EventQueue;
+class MessageEvent;
 class MessageRunnerManager;
 class MIMEManager;
 
@@ -46,12 +47,17 @@ public:
 	virtual void ReadyToRun();
 	virtual bool QuitRequested();
 
+	EventQueue *GetEventQueue() const;
+
+	static Registrar *App();
+
 private:
 	BPrivate::TRoster		*fRoster;
 	ClipboardHandler		*fClipboardHandler;
 	MIMEManager				*fMIMEManager;
 	EventQueue				*fEventQueue;
 	MessageRunnerManager	*fMessageRunnerManager;
+	MessageEvent			*fSanityEvent;
 };
 
 #endif	// REGISTRAR_H