From 45ba821ec585134c5428ff0c9d80a1d2ba58a2ef Mon Sep 17 00:00:00 2001
From: Martin Fuchs <fuchs.martin@gmail.com>
Date: Sat, 2 Apr 2005 10:48:16 +0000
Subject: [PATCH] terminate shell service objects thread if there is nothing to
 do

svn path=/trunk/; revision=14434
---
 .../explorer/services/shellservices.cpp       | 36 ++++++++++---------
 1 file changed, 19 insertions(+), 17 deletions(-)

diff --git a/reactos/subsys/system/explorer/services/shellservices.cpp b/reactos/subsys/system/explorer/services/shellservices.cpp
index f24ef636ca2..4b47ce87423 100644
--- a/reactos/subsys/system/explorer/services/shellservices.cpp
+++ b/reactos/subsys/system/explorer/services/shellservices.cpp
@@ -66,29 +66,31 @@ int SSOThread::Run()
 		RegCloseKey(hkey);
 	}
 
-	MSG msg;
-
-	while(_alive) {
-		if (MsgWaitForMultipleObjects(1, &_evtFinish, FALSE, INFINITE, QS_ALLINPUT) == WAIT_OBJECT_0+0)
-			break;	// _evtFinish has been set.
+	if (!sso_ptrs.empty()) {
+		MSG msg;
 
 		while(_alive) {
-			if (!PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
-				break;
+			if (MsgWaitForMultipleObjects(1, &_evtFinish, FALSE, INFINITE, QS_ALLINPUT) == WAIT_OBJECT_0+0)
+				break;	// _evtFinish has been set.
 
-			if (msg.message == WM_QUIT)
-				break;
+			while(_alive) {
+				if (!PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
+					break;
 
-			TranslateMessage(&msg);
-			DispatchMessage(&msg);
+				if (msg.message == WM_QUIT)
+					break;
+
+				TranslateMessage(&msg);
+				DispatchMessage(&msg);
+			}
 		}
-	}
 
-	 // shutdown all running Shell Service Objects
-	for(SSOVector::iterator it=sso_ptrs.begin(); it!=sso_ptrs.end(); ++it) {
-		SIfacePtr<IOleCommandTarget>* sso_ptr = *it;
-		(*sso_ptr)->Exec(&CGID_ShellServiceObject, OLECMDID_SAVE, OLECMDEXECOPT_DODEFAULT, NULL, NULL);
-		delete sso_ptr;
+		 // shutdown all running Shell Service Objects
+		for(SSOVector::iterator it=sso_ptrs.begin(); it!=sso_ptrs.end(); ++it) {
+			SIfacePtr<IOleCommandTarget>* sso_ptr = *it;
+			(*sso_ptr)->Exec(&CGID_ShellServiceObject, OLECMDID_SAVE, OLECMDEXECOPT_DODEFAULT, NULL, NULL);
+			delete sso_ptr;
+		}
 	}
 
 	return 0;