summaryrefslogtreecommitdiffstats
path: root/src/libs/xpcom18a4/xpcom/proxy/src/nsProxyObjectManager.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/libs/xpcom18a4/xpcom/proxy/src/nsProxyObjectManager.cpp')
-rw-r--r--src/libs/xpcom18a4/xpcom/proxy/src/nsProxyObjectManager.cpp322
1 files changed, 322 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/proxy/src/nsProxyObjectManager.cpp b/src/libs/xpcom18a4/xpcom/proxy/src/nsProxyObjectManager.cpp
new file mode 100644
index 00000000..0602bcd7
--- /dev/null
+++ b/src/libs/xpcom18a4/xpcom/proxy/src/nsProxyObjectManager.cpp
@@ -0,0 +1,322 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** 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.org 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):
+ * Doug Turner <dougt@netscape.com> (Original Author)
+ * Judson Valeski <valeski@netscape.com>
+ * Dan Matejka <danm@netscape.com>
+ * Scott Collins <scc@netscape.com>
+ * Heikki Toivonen <heiki@citec.fi>
+ * Patrick Beard <beard@netscape.com>
+ * Pierre Phaneuf <pp@ludusdesign.com>
+ * Warren Harris <warren@netscape.com>
+ * Chris Seawood <cls@seawood.org>
+ * Chris Waterson <waterson@netscape.com>
+ * Dan Mosedale <dmose@netscape.com>
+ *
+ * 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 "nsProxyEvent.h"
+#include "nsIProxyObjectManager.h"
+#include "nsProxyEventPrivate.h"
+
+#include "nsIProxyCreateInstance.h"
+
+#include "nsIComponentManager.h"
+#include "nsIServiceManager.h"
+#include "nsComponentManagerObsolete.h"
+#include "nsCOMPtr.h"
+
+#include "nsIEventQueueService.h"
+#include "nsIThread.h"
+
+
+static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
+
+/***************************************************************************/
+/* nsProxyCreateInstance */
+/* This private class will allow us to create Instances on another thread */
+/***************************************************************************/
+class nsProxyCreateInstance : public nsIProxyCreateInstance
+{
+ NS_DECL_ISUPPORTS
+ NS_IMETHOD CreateInstanceByIID(const nsIID & cid, nsISupports *aOuter, const nsIID & iid, void * *result);
+ NS_IMETHOD CreateInstanceByContractID(const char *aContractID, nsISupports *aOuter, const nsIID & iid, void * *result);
+
+ nsProxyCreateInstance() {}
+
+private:
+ ~nsProxyCreateInstance() {}
+};
+
+NS_IMPL_ISUPPORTS1(nsProxyCreateInstance, nsIProxyCreateInstance)
+
+NS_IMETHODIMP nsProxyCreateInstance::CreateInstanceByIID(const nsIID & cid, nsISupports *aOuter, const nsIID & iid, void * *result)
+{
+ return nsComponentManager::CreateInstance( cid,
+ aOuter,
+ iid,
+ result);
+}
+
+
+NS_IMETHODIMP nsProxyCreateInstance::CreateInstanceByContractID(const char *aContractID, nsISupports *aOuter, const nsIID & iid, void * *result)
+{
+ return nsComponentManager::CreateInstance( aContractID,
+ aOuter,
+ iid,
+ result);
+}
+
+/////////////////////////////////////////////////////////////////////////
+// nsProxyObjectManager
+/////////////////////////////////////////////////////////////////////////
+
+nsProxyObjectManager* nsProxyObjectManager::mInstance = nsnull;
+
+NS_IMPL_THREADSAFE_ISUPPORTS1(nsProxyObjectManager, nsIProxyObjectManager)
+
+nsProxyObjectManager::nsProxyObjectManager()
+ : mProxyObjectMap(256, PR_TRUE),
+ mProxyClassMap(256, PR_TRUE)
+{
+ mProxyCreationMonitor = PR_NewMonitor();
+}
+
+static PRBool PurgeProxyClasses(nsHashKey *aKey, void *aData, void* closure)
+{
+ nsProxyEventClass* ptr = NS_REINTERPRET_CAST(nsProxyEventClass*, aData);
+ NS_RELEASE(ptr);
+ return PR_TRUE;
+}
+
+nsProxyObjectManager::~nsProxyObjectManager()
+{
+ mProxyClassMap.Reset((nsHashtableEnumFunc)PurgeProxyClasses, nsnull);
+
+ if (mProxyCreationMonitor) {
+ PR_DestroyMonitor(mProxyCreationMonitor);
+ }
+
+ nsProxyObjectManager::mInstance = nsnull;
+}
+
+PRBool
+nsProxyObjectManager::IsManagerShutdown()
+{
+ if (mInstance)
+ return PR_FALSE;
+ return PR_TRUE;
+}
+
+nsProxyObjectManager *
+nsProxyObjectManager::GetInstance()
+{
+ if (! mInstance)
+ {
+ mInstance = new nsProxyObjectManager();
+ }
+ return mInstance;
+}
+
+
+void
+nsProxyObjectManager::Shutdown()
+{
+ mInstance = nsnull;
+}
+
+
+// Helpers
+NS_IMETHODIMP
+nsProxyObjectManager::Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr)
+{
+ nsProxyObjectManager *proxyObjectManager = GetInstance();
+
+ if (proxyObjectManager == nsnull)
+ return NS_ERROR_OUT_OF_MEMORY;
+
+ return proxyObjectManager->QueryInterface(aIID, aInstancePtr);
+}
+
+
+NS_IMETHODIMP
+nsProxyObjectManager::GetProxyForObject(nsIEventQueue *destQueue,
+ REFNSIID aIID,
+ nsISupports* aObj,
+ PRInt32 proxyType,
+ void** aProxyObject)
+{
+ if (!aObj) return NS_ERROR_NULL_POINTER;
+ if (!aProxyObject) return NS_ERROR_NULL_POINTER;
+
+ nsresult rv;
+ nsCOMPtr<nsIEventQueue> postQ;
+
+
+ *aProxyObject = nsnull;
+
+ // check to see if the destination Q is a special case.
+
+ nsCOMPtr<nsIEventQueueService> eventQService =
+ do_GetService(kEventQueueServiceCID, &rv);
+ if (NS_FAILED(rv))
+ return rv;
+
+ rv = eventQService->ResolveEventQueue(destQueue, getter_AddRefs(postQ));
+ if (NS_FAILED(rv))
+ return rv;
+
+ // check to see if the eventQ is on our thread. If so, just return the real object.
+
+ if (postQ && !(proxyType & PROXY_ASYNC) && !(proxyType & PROXY_ALWAYS))
+ {
+ PRBool aResult;
+ postQ->IsOnCurrentThread(&aResult);
+
+ if (aResult)
+ {
+ return aObj->QueryInterface(aIID, aProxyObject);
+ }
+ }
+
+ // check to see if proxy is there or not.
+ *aProxyObject = nsProxyEventObject::GetNewOrUsedProxy(postQ, proxyType, aObj, aIID);
+
+ if (*aProxyObject == nsnull)
+ return NS_ERROR_NO_INTERFACE; //fix error code?
+
+ return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsProxyObjectManager::GetProxy( nsIEventQueue *destQueue,
+ const nsCID &aClass,
+ nsISupports *aDelegate,
+ const nsIID &aIID,
+ PRInt32 proxyType,
+ void** aProxyObject)
+{
+ if (!aProxyObject) return NS_ERROR_NULL_POINTER;
+ *aProxyObject = nsnull;
+
+ // 1. Create a proxy for creating an instance on another thread.
+
+ nsIProxyCreateInstance* ciProxy = nsnull;
+
+ nsProxyCreateInstance* ciObject = new nsProxyCreateInstance();
+
+ if (ciObject == nsnull)
+ return NS_ERROR_NULL_POINTER;
+
+ NS_ADDREF(ciObject);
+
+ nsresult rv = GetProxyForObject(destQueue,
+ NS_GET_IID(nsIProxyCreateInstance),
+ ciObject,
+ PROXY_SYNC,
+ (void**)&ciProxy);
+
+ if (NS_FAILED(rv))
+ {
+ NS_RELEASE(ciObject);
+ return rv;
+ }
+
+ // 2. now create a new instance of the request object via our proxy.
+
+ nsISupports* aObj;
+
+ rv = ciProxy->CreateInstanceByIID(aClass,
+ aDelegate,
+ aIID,
+ (void**)&aObj);
+
+
+ // 3. Delete the create instance proxy and its real object.
+
+ NS_RELEASE(ciProxy);
+ NS_RELEASE(ciObject);
+
+ // 4. Check to see if creating the requested instance failed.
+ if ( NS_FAILED(rv))
+ {
+ return rv;
+ }
+
+ // 5. Now create a proxy object for the requested object.
+
+ rv = GetProxyForObject(destQueue, aIID, aObj, proxyType, aProxyObject);
+
+ // 6. release ownership of aObj so that aProxyObject owns it.
+
+ NS_RELEASE(aObj);
+
+ // 7. return the error returned from GetProxyForObject. Either way, we our out of here.
+
+ return rv;
+}
+
+/**
+ * Helper function for code that already has a link-time dependency on
+ * libxpcom and needs to get proxies in a bunch of different places.
+ * This way, the caller isn't forced to get the proxy object manager
+ * themselves every single time, thus making the calling code more
+ * readable.
+ */
+NS_COM nsresult
+NS_GetProxyForObject(nsIEventQueue *destQueue,
+ REFNSIID aIID,
+ nsISupports* aObj,
+ PRInt32 proxyType,
+ void** aProxyObject)
+{
+ static NS_DEFINE_CID(proxyObjMgrCID, NS_PROXYEVENT_MANAGER_CID);
+
+ nsresult rv; // temp for return value
+
+ // get the proxy object manager
+ //
+ nsCOMPtr<nsIProxyObjectManager> proxyObjMgr =
+ do_GetService(proxyObjMgrCID, &rv);
+
+ if (NS_FAILED(rv))
+ return NS_ERROR_FAILURE;
+
+ // and try to get the proxy object
+ //
+ return proxyObjMgr->GetProxyForObject(destQueue, aIID, aObj,
+ proxyType, aProxyObject);
+}