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118 lines
4.8 KiB
Plaintext
118 lines
4.8 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla code.
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*
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* The Initial Developer of the Original Code is Google Inc.
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* Portions created by the Initial Developer are Copyright (C) 2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@meer.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIEventTarget.idl"
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[ptr] native PRThread(PRThread);
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/**
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* This interface provides a high-level abstraction for an operating system
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* thread.
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*
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* Threads have a built-in event queue, and a thread is an event target that
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* can receive nsIRunnable objects (events) to be processed on the thread.
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*
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* See nsIThreadManager for the API used to create and locate threads.
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*/
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[scriptable, uuid(9c889946-a73a-4af3-ae9a-ea64f7d4e3ca)]
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interface nsIThread : nsIEventTarget
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{
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/**
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* @returns
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* The NSPR thread object corresponding to this nsIThread.
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*/
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[noscript] readonly attribute PRThread PRThread;
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/**
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* Shutdown the thread. This method prevents further dispatch of events to
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* the thread, and it causes any pending events to run to completion before
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* the thread joins (see PR_JoinThread) with the current thread. During this
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* method call, events for the current thread may be processed.
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*
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* This method MAY NOT be executed from the thread itself. Instead, it is
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* meant to be executed from another thread (usually the thread that created
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* this thread or the main application thread). When this function returns,
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* the thread will be shutdown, and it will no longer be possible to dispatch
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* events to the thread.
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*
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* @throws NS_ERROR_UNEXPECTED
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* Indicates that this method was erroneously called when this thread was
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* the current thread, that this thread was not created with a call to
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* nsIThreadManager::NewThread, or if this method was called more than once
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* on the thread object.
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*/
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void shutdown();
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/**
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* This method may be called to determine if there are any events ready to be
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* processed. It may only be called when this thread is the current thread.
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*
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* Because events may be added to this thread by another thread, a "false"
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* result does not mean that this thread has no pending events. It only
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* means that there were no pending events when this method was called.
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*
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* @returns
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* A boolean value that if "true" indicates that this thread has one or
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* more pending events.
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*
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* @throws NS_ERROR_UNEXPECTED
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* Indicates that this method was erroneously called when this thread was
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* not the current thread.
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*/
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boolean hasPendingEvents();
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/**
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* Process the next event. If there are no pending events, then this method
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* may wait -- depending on the value of the mayWait parameter -- until an
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* event is dispatched to this thread. This method is re-entrant but may
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* only be called if this thread is the current thread.
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*
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* @param mayWait
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* A boolean parameter that if "true" indicates that the method may block
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* the calling thread to wait for a pending event.
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*
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* @returns
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* A boolean value that if "true" indicates that an event was processed.
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*
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* @throws NS_ERROR_UNEXPECTED
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* Indicates that this method was erroneously called when this thread was
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* not the current thread.
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*/
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boolean processNextEvent(in boolean mayWait);
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};
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