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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:49:04 +0000
commit16f504a9dca3fe3b70568f67b7d41241ae485288 (patch)
treec60f36ada0496ba928b7161059ba5ab1ab224f9d /src/libs/xpcom18a4/xpcom/threads/nsIEventQueueService.idl
parentInitial commit. (diff)
downloadvirtualbox-upstream.tar.xz
virtualbox-upstream.zip
Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/threads/nsIEventQueueService.idl')
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * Rick Potts <rpotts@netscape.com>
+ * David Matiskella <davidm@netscape.com>
+ * David Hyatt <hyatt@netscape.com>
+ * Suresh Duddi <dp@netscape.com>
+ * Scott Collins <scc@netscape.com>
+ * Dan Matejka <danm@netscape.com>
+ * Doug Turner <dougt@netscape.com>
+ * Ray Whitmer <rayw@netscape.com>
+ * Dan Mosedale <dmose@mozilla.org>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsISupports.idl"
+#include "nsIEventQueue.idl"
+
+%{C++
+#include "prthread.h"
+#include "plevent.h"
+
+/* be761f00-a3b0-11d2-996c-0080c7cb1080 */
+#define NS_EVENTQUEUESERVICE_CID \
+{ 0xbe761f00, 0xa3b0, 0x11d2, \
+ {0x99, 0x6c, 0x00, 0x80, 0xc7, 0xcb, 0x10, 0x80} }
+
+#define NS_EVENTQUEUESERVICE_CONTRACTID "@mozilla.org/event-queue-service;1"
+#define NS_EVENTQUEUESERVICE_CLASSNAME "Event Queue Service"
+
+#define NS_CURRENT_THREAD ((PRThread*)0)
+#define NS_CURRENT_EVENTQ ((nsIEventQueue*)0)
+
+#define NS_UI_THREAD ((PRThread*)1)
+#define NS_UI_THREAD_EVENTQ ((nsIEventQueue*)1)
+
+%}
+
+/* a forward decl */
+interface nsIThread;
+
+[scriptable, uuid(a6cf90dc-15b3-11d2-932e-00805f8add32)]
+interface nsIEventQueueService : nsISupports
+{
+ /**
+ * Creates and holds a native event queue for the current thread.
+ * "Native" queues have an associated callback mechanism which is
+ * automatically triggered when an event is posted. See plevent.c for
+ * details.
+ * @return NS_OK on success, or a host of failure indications
+ */
+ void createThreadEventQueue();
+
+ /**
+ * Creates and hold a monitored event queue for the current thread.
+ * "Monitored" queues have no callback processing mechanism.
+ * @return NS_OK on success, or a host of failure indications
+ */
+ void createMonitoredThreadEventQueue();
+
+ /**
+ * Somewhat misnamed, this method releases the service's hold on the event
+ * queue(s) for this thread. Subsequent attempts to access this thread's
+ * queue (GetThreadEventQueue, for example) may fail, though the queue itself
+ * will be destroyed only after all references to it are released and the
+ * queue itself is no longer actively processing events.
+ * @return nonsense.
+ */
+ void destroyThreadEventQueue();
+
+ nsIEventQueue createFromIThread(in nsIThread aThread,
+ in boolean aNative);
+
+ [noscript] nsIEventQueue createFromPLEventQueue(in PLEventQueuePtr
+ aPLEventQueue);
+
+ // Add a new event queue for the current thread, making it the "current"
+ // queue. Return that queue, addrefed.
+ nsIEventQueue pushThreadEventQueue();
+
+ // release and disable the queue
+ void popThreadEventQueue(in nsIEventQueue aQueue);
+
+ [noscript] nsIEventQueue getThreadEventQueue(in PRThreadPtr aThread);
+
+ /**
+ * @deprecated in favor of getSpecialEventQueue, since that's
+ * scriptable and this isn't.
+ *
+ * Check for any "magic" event queue constants (NS_CURRENT_EVENTQ,
+ * NS_UI_THREAD_EVENTQ) and return the real event queue that they
+ * represent, AddRef()ed. Otherwise, return the event queue passed
+ * in, AddRef()ed. This is not scriptable because the arguments in
+ * question may be magic constants rather than real nsIEventQueues.
+ *
+ * @arg queueOrConstant either a real event queue or a magic
+ * constant to be resolved
+ *
+ * @return a real event queue, AddRef()ed
+ */
+ [noscript] nsIEventQueue resolveEventQueue(in nsIEventQueue queueOrConstant);
+
+ /**
+ * Returns the appropriate special event queue, AddRef()ed. Really
+ * just a scriptable version of ResolveEventQueue.
+ *
+ * @arg aQueue Either CURRENT_THREAD_EVENT_QUEUE or
+ * UI_THREAD_EVENT_QUEUE
+ * @return The requested nsIEventQueue, AddRef()ed
+ * @exception NS_ERROR_NULL_POINTER Zero pointer passed in for return value
+ * @exception NS_ERROR_ILLEGAL_VALUE Bogus constant passed in aQueue
+ * @exception NS_ERROR_FAILURE Error while calling
+ * GetThreadEventQueue()
+ */
+ nsIEventQueue getSpecialEventQueue(in long aQueue);
+
+ const long CURRENT_THREAD_EVENT_QUEUE = 0;
+ const long UI_THREAD_EVENT_QUEUE = 1;
+
+};