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;
+}