Copy of aRts for Trinity modifications

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/dependencies/arts@1070145 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 150 insertions, 0 deletions

diff --git a/mcop/startupmanager.cc b/mcop/startupmanager.cc
new file mode 100644
index 0000000..89daf16
--- /dev/null
+++ b/mcop/startupmanager.cc
@@ -0,0 +1,150 @@
+    /*
+
+    Copyright (C) 2000 Stefan Westerfeld
+                       stefan@space.twc.de
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+  
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+   
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+
+    */
+
+#include <config.h>
+#include "startupmanager.h"
+#include "extensionloader.h"
+#include "debug.h"
+#include <iostream>
+
+using namespace std;
+using namespace Arts;
+
+/*
+ * StartupClass implementation
+ */
+
+StartupClass::StartupClass()
+{
+	StartupManager::add(this);
+}
+
+void StartupClass::shutdown()
+{
+	// shutdown is optional, startup is mandatory
+}
+
+/*
+ * StartupManager implementation
+ */
+
+list<StartupClass *> *StartupManager::startupClasses = 0;
+ExtensionLoader *StartupManager::activeExtensionLoader = 0;
+bool StartupManager::running = false;
+
+void StartupManager::add(StartupClass *sc)
+{
+	if(activeExtensionLoader)
+	{
+		activeExtensionLoader->addStartupClass(sc);
+	}
+	else
+	{
+		if(running)
+		{
+			/*
+			 * the problem with adding a StartupClass when we're already running
+			 * is that we can't execute the startup() function immediately (for
+			 * this might break the dependancy of the StartupClass on other
+			 * globally constructed objects)
+			 *
+			 * so will never execute it, which is likely to break something
+			 * else (i.e. implementations defined in the library the startup
+			 * class is contained in can't be found)
+			 *
+			 * usually, this warning is triggered when an application
+			 * dynamically loads a library containing StartupClasses, without
+			 * libmcop knowing about it
+			 */
+			arts_warning("MCOP StartupManager: adding a StartupClass after Dispatcher init will not work.");
+		}
+
+		if(!startupClasses) startupClasses = new list<StartupClass *>;
+
+		startupClasses->push_back(sc);
+	}
+}
+
+void StartupManager::setExtensionLoader(ExtensionLoader *extension)
+{
+	/*
+	 * this is not reentrant: you can't load two extensions at the same time,
+	 * and it is impossible that an extension loads an extension while being
+	 * loaded (nothing forbids you to load another extension from an extension
+	 * in a StartupClass or any time later - just don't do it while being
+	 * lt_dlopen()d
+	 */
+	if(activeExtensionLoader)
+		arts_assert(extension == 0);
+	else
+		arts_assert(extension != 0);
+
+	activeExtensionLoader = extension;
+}
+
+void StartupManager::startup()
+{
+	arts_return_if_fail(running == false);
+	running = true;
+
+	if(startupClasses)
+	{
+		list<StartupClass *>::iterator i;
+
+		for(i = startupClasses->begin(); i != startupClasses->end(); i++)
+			(*i)->startup();
+	}
+}
+
+void StartupManager::shutdown()
+{
+	arts_return_if_fail(running == true);
+	running = false;
+
+	if(startupClasses)
+	{
+		list<StartupClass *>::iterator i;
+
+		for(i = startupClasses->begin(); i != startupClasses->end(); i++)
+			(*i)->shutdown();
+	}
+}
+
+void StartupManager::internalFreeAll()
+{
+	if(startupClasses)
+	{
+		startupClasses->erase(startupClasses->begin(),startupClasses->end());
+
+		delete startupClasses;
+		startupClasses = 0;
+	}
+}
+
+namespace Arts {
+
+static class StartupManagerFree {
+public:
+	~StartupManagerFree() { StartupManager::internalFreeAll(); }
+} The_StartupManagerFree;
+
+}