* increased gui ipc read check (yes yes, i should be using wait cond... but qt mutexes suck)

* added mutex to client proxy to protect stream
* added try/catch to ipc log outputter buffer thread
* protected ipc client proxy list with mutex (saw a weird stl error, might be caused by cross-thread weirdness)

src/gui/src/IpcReader.cpp

@@ -84,7 +84,7 @@ void IpcReader::readStream(char* buffer, int length)
 			// qt is such a fucker with mutexes (can't lock/unlock between
 			// threads?! wtf?!). i'd just rather not go there (patches welcome).
 			while (!m_ReadyRead) {
-				QThread::usleep(100);
+				QThread::usleep(50);
 			}
 			m_ReadyRead = false;
 		}

src/lib/ipc/CIpcClientProxy.cpp

@@ -66,7 +66,11 @@ CIpcClientProxy::~CIpcClientProxy()
 	EVENTQUEUE->removeHandler(
 		m_stream.getOutputShutdownEvent(), m_stream.getEventTarget());
 	
+	// don't delete the stream while it's being used.
+	ARCH->lockMutex(m_mutex);
 	delete &m_stream;
+	ARCH->unlockMutex(m_mutex);
+	ARCH->closeMutex(m_mutex);
 }
 
 void
@@ -86,6 +90,9 @@ CIpcClientProxy::handleWriteError(const CEvent&, void*)
 void
 CIpcClientProxy::handleData(const CEvent&, void*)
 {
+	// don't allow the dtor to destroy the stream while we're using it.
+	CArchMutexLock lock(m_mutex);
+
 	UInt8 code[1];
 	UInt32 n = m_stream.read(code, 1);
 	while (n != 0) {
@@ -124,6 +131,7 @@ CIpcClientProxy::send(const CIpcMessage& message)
 {
 	// don't allow other threads to write until we've finished the entire
 	// message. stream write is locked, but only for that single write.
+	// also, don't allow the dtor to destroy the stream while we're using it.
 	CArchMutexLock lock(m_mutex);
 
 	LOG((CLOG_DEBUG "ipc client proxy write: %d", message.m_type));

src/lib/ipc/CIpcLogOutputter.cpp

@@ -26,6 +26,7 @@
 #include "CArch.h"
 #include "CThread.h"
 #include "TMethodJob.h"
+#include "XArch.h"
 
 CIpcLogOutputter::CIpcLogOutputter(CIpcServer& ipcServer) :
 m_ipcServer(ipcServer),
@@ -39,6 +40,9 @@ m_running(true)
 
 CIpcLogOutputter::~CIpcLogOutputter()
 {
+	m_running = false;
+	m_bufferThread->wait(5);
+
 	ARCH->closeMutex(m_bufferMutex);
 	delete m_bufferThread;
 }
@@ -51,8 +55,6 @@ CIpcLogOutputter::open(const char* title)
 void
 CIpcLogOutputter::close()
 {
-	m_running = false;
-	m_bufferThread->wait(5);
 }
 
 void
@@ -88,19 +90,26 @@ CIpcLogOutputter::write(ELevel, const char* text, bool force)
 void
 CIpcLogOutputter::bufferThread(void*)
 {
-	while (m_running) {
-		while (m_running && m_buffer.size() == 0) {
-			ARCH->sleep(.1);
-		}
+	try {
+		while (m_running) {
+			while (m_running && m_buffer.size() == 0) {
+				ARCH->sleep(.1);
+			}
 
-		if (!m_running) {
-			break;
-		}
+			if (!m_running) {
+				break;
+			}
 
-		if (m_ipcServer.hasClients(kIpcClientGui)) {
-			sendBuffer();
+			if (m_ipcServer.hasClients(kIpcClientGui)) {
+				sendBuffer();
+			}
 		}
 	}
+	catch (XArch& e) {
+		LOG((CLOG_ERR "ipc log buffer thread error, %s", e.what().c_str()));
+	}
+
+	LOG((CLOG_DEBUG "ipc log buffer thread finished"));
 }
 
 CString*

src/lib/ipc/CIpcServer.cpp

@@ -31,6 +31,7 @@ CEvent::Type			CIpcServer::s_clientConnectedEvent = CEvent::kUnknown;
 CIpcServer::CIpcServer() :
 m_address(CNetworkAddress(IPC_HOST, IPC_PORT))
 {
+	m_clientsMutex = ARCH->newMutex();
 	m_address.resolve();
 
 	EVENTQUEUE->adoptHandler(
@@ -41,11 +42,14 @@ m_address(CNetworkAddress(IPC_HOST, IPC_PORT))
 
 CIpcServer::~CIpcServer()
 {
-	CClientSet::iterator it;
+	ARCH->lockMutex(m_clientsMutex);
+	CClientList::iterator it;
 	for (it = m_clients.begin(); it != m_clients.end(); it++) {
 		delete *it;
 	}
 	m_clients.empty();
+	ARCH->unlockMutex(m_clientsMutex);
+	ARCH->closeMutex(m_clientsMutex);
 
 	EVENTQUEUE->removeHandler(m_socket.getConnectingEvent(), &m_socket);
 }
@@ -65,8 +69,11 @@ CIpcServer::handleClientConnecting(const CEvent&, void*)
 	}
 
 	LOG((CLOG_DEBUG "accepted ipc client connection"));
+
+	ARCH->lockMutex(m_clientsMutex);
 	CIpcClientProxy* proxy = new CIpcClientProxy(*stream);
-	m_clients.insert(proxy);
+	m_clients.push_back(proxy);
+	ARCH->unlockMutex(m_clientsMutex);
 
 	EVENTQUEUE->adoptHandler(
 		CIpcClientProxy::getDisconnectedEvent(), proxy,
@@ -85,20 +92,22 @@ CIpcServer::handleClientDisconnected(const CEvent& e, void*)
 	EVENTQUEUE->removeHandler(
 		CIpcClientProxy::getDisconnectedEvent(), proxy);
 
-	CClientSet::iterator& it = m_clients.find(proxy);
+	CArchMutexLock lock(m_clientsMutex);
+	m_clients.remove(proxy);
 	delete proxy;
-	m_clients.erase(it);
 	LOG((CLOG_DEBUG "ipc client proxy removed, connected=%d", m_clients.size()));
 }
 
 bool
 CIpcServer::hasClients(EIpcClientType clientType) const
 {
-	if (m_clients.size() == 0) {
+	CArchMutexLock lock(m_clientsMutex);
+
+	if (m_clients.empty()) {
 		return false;
 	}
 
-	CClientSet::iterator it;
+	CClientList::const_iterator it;
 	for (it = m_clients.begin(); it != m_clients.end(); it++) {
 		// at least one client is alive and type matches, there are clients.
 		CIpcClientProxy* p = *it;
@@ -121,7 +130,9 @@ CIpcServer::getClientConnectedEvent()
 void
 CIpcServer::send(const CIpcMessage& message, EIpcClientType filterType)
 {
-	CClientSet::iterator it;
+	CArchMutexLock lock(m_clientsMutex);
+
+	CClientList::iterator it;
 	for (it = m_clients.begin(); it != m_clients.end(); it++) {
 		CIpcClientProxy* proxy = *it;
 		if (proxy->m_clientType == filterType) {

src/lib/ipc/CIpcServer.h

@@ -20,7 +20,8 @@
 #include "CTCPListenSocket.h"
 #include "CNetworkAddress.h"
 #include "Ipc.h"
-#include <set>
+#include <list>
+#include "CArch.h"
 
 class CEvent;
 class CIpcClientProxy;
@@ -65,11 +66,12 @@ private:
 	void				handleClientMessage(const CEvent&, void*);
 
 private:
-	typedef std::set<CIpcClientProxy*> CClientSet;
+	typedef std::list<CIpcClientProxy*> CClientList;
 
 	CTCPListenSocket	m_socket;
 	CNetworkAddress		m_address;
-	CClientSet			m_clients;
+	CClientList			m_clients;
+	CArchMutex			m_clientsMutex;
 	
 	static CEvent::Type	s_clientConnectedEvent;
 };