Added global lock that can be used for lazy initializations.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22502 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/app/AppMisc.h

@@ -1,33 +1,12 @@
-//------------------------------------------------------------------------------
+/*
-//	Copyright (c) 2001-2002, OpenBeOS
+ * Copyright 2002-2007, Ingo Weinhold, [email protected].
-//
+ * Distributed under the terms of the MIT License.
-//	Permission is hereby granted, free of charge, to any person obtaining a
+ */
-//	copy of this software and associated documentation files (the "Software"),
-//	to deal in the Software without restriction, including without limitation
-//	the rights to use, copy, modify, merge, publish, distribute, sublicense,
-//	and/or sell copies of the Software, and to permit persons to whom the
-//	Software is furnished to do so, subject to the following conditions:
-//
-//	The above copyright notice and this permission notice shall be included in
-//	all copies or substantial portions of the Software.
-//
-//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-//	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-//	DEALINGS IN THE SOFTWARE.
-//
-//	File Name:		AppMisc.h
-//	Author:			Ingo Weinhold ([email protected])
-//	Description:	Miscellaneous private functionality.
-//------------------------------------------------------------------------------
-
 #ifndef _APP_MISC_H
 #define _APP_MISC_H
 
 #include <Handler.h>
+#include <Locker.h>
 #include <OS.h>
 #include <SupportDefs.h>
 
@@ -35,6 +14,9 @@ struct entry_ref;
 
 namespace BPrivate {
 
+// Global lock that can be used e.g. to initialize singletons.
+extern BLocker gInitializationLock;
+
 status_t get_app_path(team_id team, char *buffer);
 status_t get_app_path(char *buffer);
 status_t get_app_ref(team_id team, entry_ref *ref, bool traverse = true);

src/kits/app/AppMisc.cpp

@@ -18,6 +18,9 @@
 
 namespace BPrivate {
 
+BLocker gInitializationLock("global init lock");
+
+
 // get_app_path
 /*!	\brief Returns the path to an application's executable.
 	\param team The application's team ID.