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Diffstat (limited to 'src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmTransactionManager.cpp')
-rw-r--r-- | src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmTransactionManager.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmTransactionManager.cpp b/src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmTransactionManager.cpp new file mode 100644 index 00000000..9d6cc98e --- /dev/null +++ b/src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmTransactionManager.cpp @@ -0,0 +1,162 @@ +/* ***** 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 Transaction Manager. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corp. + * Portions created by the Initial Developer are Copyright (C) 2003 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * John Gaunt <jgaunt@netscape.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either 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 "plstr.h" +#include <stdlib.h> +#include "tmQueue.h" +#include "tmTransactionManager.h" +#include "tmTransaction.h" +#include "tmUtils.h" + +/////////////////////////////////////////////////////////////////////////////// +// Constructors & Destructor & Initializer + +tmTransactionManager::~tmTransactionManager() { + + PRUint32 size = mQueues.Size(); + tmQueue *queue = nsnull; + for (PRUint32 index = 0; index < size; index++) { + queue = (tmQueue *)mQueues[index]; + if (queue) { + delete queue; + } + } +} + +PRInt32 +tmTransactionManager::Init() { + return mQueues.Init(); +} + +/////////////////////////////////////////////////////////////////////////////// +// public transaction module methods + +void +tmTransactionManager::HandleTransaction(tmTransaction *aTrans) { + + PRUint32 action = aTrans->GetAction(); + PRUint32 ownerID = aTrans->GetOwnerID(); + tmQueue *queue = nsnull; + + // get the right queue -- attaches do it differently + if (action == TM_ATTACH) { + const char *name = (char*) aTrans->GetMessage(); // is qName for Attaches + queue = GetQueue(name); + if (!queue) { + PRInt32 index = AddQueue(name); + if (index >= 0) + queue = GetQueue(index); // GetQueue may return nsnull + } + } + else // all other trans should have a valid queue ID already + queue = GetQueue(aTrans->GetQueueID()); + + if (queue) { + // All possible actions should have a case, default is not valid + // delete trans when done with them, let the queue own the trans + // that are posted to them. + PRInt32 result = 0; + switch (action) { + case TM_ATTACH: + queue->AttachClient(ownerID); + break; + case TM_POST: + result = queue->PostTransaction(aTrans); + if (result >= 0) // post failed, aTrans cached in a tmQueue + return; + break; + case TM_FLUSH: + queue->FlushQueue(ownerID); + break; + case TM_DETACH: + if (queue->DetachClient(ownerID) == TM_SUCCESS_DELETE_QUEUE) { + // the last client has been removed, remove the queue + RemoveQueue(aTrans->GetQueueID()); // this _could_ be out of bounds + } + break; + default: + PR_NOT_REACHED("bad action in the transaction"); + } + } + delete aTrans; +} + +/////////////////////////////////////////////////////////////////////////////// +// Protected member functions + +// +// Queue Handling +// + +tmQueue* +tmTransactionManager::GetQueue(const char *aQueueName) { + + PRUint32 size = mQueues.Size(); + tmQueue *queue = nsnull; + for (PRUint32 index = 0; index < size; index++) { + queue = (tmQueue*) mQueues[index]; + if (queue && strcmp(queue->GetName(), aQueueName) == 0) + return queue; + } + return nsnull; +} + +// if successful the nsresult contains the index of the added queue +PRInt32 +tmTransactionManager::AddQueue(const char *aQueueName) { + + tmQueue* queue = new tmQueue(); + if (!queue) + return -1; + PRInt32 index = mQueues.Append(queue); + if (index < 0) + delete queue; + else + queue->Init(aQueueName, index, this); + return index; +} + +void +tmTransactionManager::RemoveQueue(PRUint32 aQueueID) { + PR_ASSERT(aQueueID <= mQueues.Size()); + + tmQueue *queue = (tmQueue*)mQueues[aQueueID]; + if (queue) { + mQueues.RemoveAt(aQueueID); + delete queue; + } +} |