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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:49:04 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:49:04 +0000 |
commit | 16f504a9dca3fe3b70568f67b7d41241ae485288 (patch) | |
tree | c60f36ada0496ba928b7161059ba5ab1ab224f9d /src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmQueue.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.tar.xz virtualbox-16f504a9dca3fe3b70568f67b7d41241ae485288.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/ipc/ipcd/extensions/transmngr/module/tmQueue.cpp')
-rw-r--r-- | src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmQueue.cpp | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmQueue.cpp b/src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmQueue.cpp new file mode 100644 index 00000000..5164446f --- /dev/null +++ b/src/libs/xpcom18a4/ipc/ipcd/extensions/transmngr/module/tmQueue.cpp @@ -0,0 +1,223 @@ +/* ***** 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 "tmQueue.h" +#include "tmTransaction.h" +#include "tmTransactionManager.h" +#include "tmUtils.h" + +/////////////////////////////////////////////////////////////////////////////// +// Constructors & Destructor + +tmQueue::~tmQueue() { + + // empty the vectors + PRUint32 index = 0; + PRUint32 size = mTransactions.Size(); + for ( ; index < size ; index++) { + if (mTransactions[index]) + delete (tmTransaction *)mTransactions[index]; + } + + // don't need to delete the mListeners because + // we just insert PRUint32s, no allocation + + mTM = nsnull; + mID = 0; + if (mName) + PL_strfree(mName); +} + +/////////////////////////////////////////////////////////////////////////////// +// Public Methods + +PRInt32 +tmQueue::Init(const char* aName, PRUint32 aID, tmTransactionManager *aTM) { + PR_ASSERT(mTM == nsnull); + + if (NS_SUCCEEDED(mTransactions.Init()) && + NS_SUCCEEDED(mListeners.Init()) && + ((mName = PL_strdup(aName)) != nsnull) ) { + mTM = aTM; + mID = aID; + return NS_OK; + } + return -1; +} + +PRInt32 +tmQueue::AttachClient(PRUint32 aClientID) { + + PRInt32 status = NS_OK; // success of adding client + + if (!IsAttached(aClientID)) { + // add the client to the listener list -- null safe call + status = mListeners.Append((void*) aClientID); + } + else + status = -2; + + // create & init a reply transaction + tmTransaction trans; + if (NS_SUCCEEDED(trans.Init(aClientID, // owner's ipc ID + mID, // client gets our ID + TM_ATTACH_REPLY, // action + status, // success of the add + (PRUint8*)mName, // client matches name to ID + PL_strlen(mName)+1))) { + // send the reply + mTM->SendTransaction(aClientID, &trans); + } + + // if we successfully added the client - send all current transactions + if (status >= 0) { // append returns the index of the added element + + PRUint32 size = mTransactions.Size(); + for (PRUint32 index = 0; index < size; index++) { + if (mTransactions[index]) + mTM->SendTransaction(aClientID, (tmTransaction*) mTransactions[index]); + } + } + return status; +} + +PRInt32 +tmQueue::DetachClient(PRUint32 aClientID) { + + PRUint32 size = mListeners.Size(); + PRUint32 id = 0; + PRInt32 status = -1; + + for (PRUint32 index = 0; index < size; index++) { + id = (PRUint32)NS_PTR_TO_INT32(mListeners[index]); + if(id == aClientID) { + mListeners.RemoveAt(index); + status = NS_OK; + break; + } + } + + tmTransaction trans; + if (NS_SUCCEEDED(trans.Init(aClientID, + mID, + TM_DETACH_REPLY, + status, + nsnull, + 0))) { + // send the reply + mTM->SendTransaction(aClientID, &trans); + } + + // if we've removed all the listeners, remove the queue. + if (mListeners.Size() == 0) + return TM_SUCCESS_DELETE_QUEUE; + return status; +} + +void +tmQueue::FlushQueue(PRUint32 aClientID) { + + if(!IsAttached(aClientID)) + return; + + PRUint32 size = mTransactions.Size(); + for (PRUint32 index = 0; index < size; index++) + if (mTransactions[index]) + delete (tmTransaction*)mTransactions[index]; + + mTransactions.Clear(); + + tmTransaction trans; + if (NS_SUCCEEDED(trans.Init(aClientID, + mID, + TM_FLUSH_REPLY, + NS_OK, + nsnull, + 0))) { + mTM->SendTransaction(aClientID, &trans); + } +} + +PRInt32 +tmQueue::PostTransaction(tmTransaction *aTrans) { + + PRInt32 status = -1; + PRUint32 ownerID = aTrans->GetOwnerID(); + + // if we are attached, have the right queue and have successfully + // appended the transaction to the queue, send the transaction + // to all the listeners. + + if (IsAttached(ownerID) && aTrans->GetQueueID() == mID) + status = mTransactions.Append(aTrans); + + if (status >= 0) { + // send the transaction to all members of mListeners except the owner + PRUint32 size = mListeners.Size(); + PRUint32 id = 0; + for (PRUint32 index = 0; index < size; index++) { + id = (PRUint32)NS_PTR_TO_INT32(mListeners[index]); + if (ownerID != id) + mTM->SendTransaction(id, aTrans); + } + } + + tmTransaction trans; + if (NS_SUCCEEDED(trans.Init(ownerID, + mID, + TM_POST_REPLY, + status, + nsnull, + 0))) { + // send the reply + mTM->SendTransaction(ownerID, &trans); + } + return status; +} + +PRBool +tmQueue::IsAttached(PRUint32 aClientID) { + // XXX could be an issue if the aClientID is 0 and there + // is a "hole" in the mListeners vector. - may NEED to store PRUint32*s + PRUint32 size = mListeners.Size(); + for (PRUint32 index = 0; index < size; index++) { + if (aClientID == (PRUint32)NS_PTR_TO_INT32(mListeners[index])) + return PR_TRUE; + } + return PR_FALSE; +} |