landing patch for bug 326273 "Implement nsIThreadManager" (Mac portions by Mark Mentovai) with reviews from bienvenu, bsmedberg, bzbarsky, josh, roc, and ssieb
This commit is contained in:
darin@meer.net
233
xpcom/glue/nsThreadUtils.cpp
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233
xpcom/glue/nsThreadUtils.cpp
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/* -*- 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 "nsThreadUtils.h"
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#ifdef MOZILLA_INTERNAL_API
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# include "nsThreadManager.h"
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#else
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# include "nsXPCOMCIDInternal.h"
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# include "nsIThreadManager.h"
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# include "nsServiceManagerUtils.h"
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#endif
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#ifndef XPCOM_GLUE_AVOID_NSPR
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NS_IMPL_THREADSAFE_ISUPPORTS1(nsRunnable, nsIRunnable)
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NS_IMETHODIMP
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nsRunnable::Run()
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{
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// Do nothing
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return NS_OK;
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}
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#endif // XPCOM_GLUE_AVOID_NSPR
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//-----------------------------------------------------------------------------
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NS_METHOD
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NS_NewThread(nsIThread **result, nsIRunnable *event)
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{
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nsCOMPtr<nsIThread> thread;
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#ifdef MOZILLA_INTERNAL_API
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nsresult rv = nsThreadManager::get()->
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nsThreadManager::NewThread(0, getter_AddRefs(thread));
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#else
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nsresult rv;
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nsCOMPtr<nsIThreadManager> mgr =
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do_GetService(NS_THREADMANAGER_CONTRACTID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mgr->NewThread(0, getter_AddRefs(thread));
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#endif
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NS_ENSURE_SUCCESS(rv, rv);
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if (event) {
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rv = thread->Dispatch(event, NS_DISPATCH_NORMAL);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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*result = nsnull;
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thread.swap(*result);
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return NS_OK;
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}
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NS_METHOD
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NS_GetCurrentThread(nsIThread **result)
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{
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#ifdef MOZILLA_INTERNAL_API
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return nsThreadManager::get()->nsThreadManager::GetCurrentThread(result);
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#else
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nsresult rv;
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nsCOMPtr<nsIThreadManager> mgr =
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do_GetService(NS_THREADMANAGER_CONTRACTID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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return mgr->GetCurrentThread(result);
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#endif
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}
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NS_METHOD
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NS_GetMainThread(nsIThread **result)
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{
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#ifdef MOZILLA_INTERNAL_API
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return nsThreadManager::get()->nsThreadManager::GetMainThread(result);
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#else
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nsresult rv;
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nsCOMPtr<nsIThreadManager> mgr =
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do_GetService(NS_THREADMANAGER_CONTRACTID, &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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return mgr->GetMainThread(result);
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#endif
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}
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NS_METHOD_(PRBool)
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NS_IsMainThread()
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{
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PRBool result = PR_FALSE;
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#ifdef MOZILLA_INTERNAL_API
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nsThreadManager::get()->nsThreadManager::GetIsMainThread(&result);
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#else
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nsCOMPtr<nsIThreadManager> mgr =
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do_GetService(NS_THREADMANAGER_CONTRACTID);
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if (mgr)
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mgr->GetIsMainThread(&result);
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#endif
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return result;
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}
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NS_METHOD
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NS_DispatchToCurrentThread(nsIRunnable *event)
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{
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#ifdef MOZILLA_INTERNAL_API
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nsIThread *thread = NS_GetCurrentThread();
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NS_ENSURE_STATE(thread);
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#else
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nsCOMPtr<nsIThread> thread;
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nsresult rv = NS_GetCurrentThread(getter_AddRefs(thread));
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NS_ENSURE_SUCCESS(rv, rv);
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#endif
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return thread->Dispatch(event, NS_DISPATCH_NORMAL);
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}
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NS_METHOD
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NS_DispatchToMainThread(nsIRunnable *event, PRUint32 dispatchFlags)
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{
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nsCOMPtr<nsIThread> thread;
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nsresult rv = NS_GetMainThread(getter_AddRefs(thread));
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NS_ENSURE_SUCCESS(rv, rv);
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return thread->Dispatch(event, dispatchFlags);
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}
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NS_METHOD
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NS_ProcessPendingEvents(nsIThread *thread, PRIntervalTime timeout)
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{
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nsresult rv = NS_OK;
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#ifdef MOZILLA_INTERNAL_API
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if (!thread) {
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thread = NS_GetCurrentThread();
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NS_ENSURE_STATE(thread);
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}
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#else
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nsCOMPtr<nsIThread> current;
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if (!thread) {
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rv = NS_GetCurrentThread(getter_AddRefs(current));
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NS_ENSURE_SUCCESS(rv, rv);
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thread = current.get();
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}
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#endif
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PRIntervalTime start = PR_IntervalNow();
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for (;;) {
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PRBool processedEvent;
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rv = thread->ProcessNextEvent(PR_FALSE, &processedEvent);
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if (NS_FAILED(rv) || !processedEvent)
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break;
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if (PR_IntervalNow() - start > timeout)
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break;
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}
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return rv;
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}
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PRBool
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NS_HasPendingEvents(nsIThread *thread)
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{
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#ifdef MOZILLA_INTERNAL_API
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if (!thread) {
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thread = NS_GetCurrentThread();
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NS_ENSURE_STATE(thread);
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}
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#else
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nsCOMPtr<nsIThread> current;
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if (!thread) {
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NS_GetCurrentThread(getter_AddRefs(current));
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NS_ENSURE_TRUE(current, PR_FALSE);
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thread = current.get();
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}
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#endif
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PRBool val;
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return NS_SUCCEEDED(thread->HasPendingEvents(&val)) && val;
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}
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PRBool
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NS_ProcessNextEvent(nsIThread *thread, PRBool mayWait)
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{
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#ifdef MOZILLA_INTERNAL_API
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if (!thread) {
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thread = NS_GetCurrentThread();
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NS_ENSURE_STATE(thread);
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}
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#else
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nsCOMPtr<nsIThread> current;
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if (!thread) {
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NS_GetCurrentThread(getter_AddRefs(current));
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NS_ENSURE_TRUE(current, PR_FALSE);
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thread = current.get();
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}
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#endif
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PRBool val;
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return NS_SUCCEEDED(thread->ProcessNextEvent(mayWait, &val)) && val;
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}
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#ifdef MOZILLA_INTERNAL_API
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nsIThread *
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NS_GetCurrentThread() {
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return nsThreadManager::get()->GetCurrentThread();
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}
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#endif
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