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authorsimon <none@none>2014-05-07 10:56:41 -0700
committersimon <none@none>2014-05-07 10:56:41 -0700
commit250db74bf9325acdc1169f6c13d297e7fe44b753 (patch)
treec6926efeefeb10ec3a36b296aa1ac7bd8521e0e3 /indra/llcommon/lllinkedqueue.h
parent676bad148a72c235ec79742e3f490ca66b4f40d0 (diff)
parentd0ef02c23a7a37c8c9bfe3a86bae88bb811fc9fe (diff)
Pull and merge viewer-release as version 3.7.8
Diffstat (limited to 'indra/llcommon/lllinkedqueue.h')
-rwxr-xr-xindra/llcommon/lllinkedqueue.h309
1 files changed, 0 insertions, 309 deletions
diff --git a/indra/llcommon/lllinkedqueue.h b/indra/llcommon/lllinkedqueue.h
deleted file mode 100755
index 8336608809..0000000000
--- a/indra/llcommon/lllinkedqueue.h
+++ /dev/null
@@ -1,309 +0,0 @@
-/**
- * @file lllinkedqueue.h
- * @brief Declaration of linked queue classes.
- *
- * $LicenseInfo:firstyear=2003&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
-
-#ifndef LL_LLLINKEDQUEUE_H
-#define LL_LLLINKEDQUEUE_H
-
-#include "llerror.h"
-
-// node that actually contains the data
-template <class DATA_TYPE> class LLLinkedQueueNode
-{
-public:
- DATA_TYPE mData;
- LLLinkedQueueNode *mNextp;
- LLLinkedQueueNode *mPrevp;
-
-
-public:
- LLLinkedQueueNode();
- LLLinkedQueueNode(const DATA_TYPE data);
-
- // destructor does not, by default, destroy associated data
- // however, the mDatap must be NULL to ensure that we aren't causing memory leaks
- ~LLLinkedQueueNode();
-};
-
-
-
-template <class DATA_TYPE> class LLLinkedQueue
-{
-
-public:
- LLLinkedQueue();
-
- // destructor destroys list and nodes, but not data in nodes
- ~LLLinkedQueue();
-
- // Puts at end of FIFO
- void push(const DATA_TYPE data);
-
- // Takes off front of FIFO
- BOOL pop(DATA_TYPE &data);
- BOOL peek(DATA_TYPE &data);
-
- void reset();
-
- S32 getLength() const;
-
- BOOL isEmpty() const;
-
- BOOL remove(const DATA_TYPE data);
-
- BOOL checkData(const DATA_TYPE data) const;
-
-private:
- // add node to end of list
- // set mCurrentp to mQueuep
- void addNodeAtEnd(LLLinkedQueueNode<DATA_TYPE> *nodep);
-
-private:
- LLLinkedQueueNode<DATA_TYPE> mHead; // head node
- LLLinkedQueueNode<DATA_TYPE> mTail; // tail node
- S32 mLength;
-};
-
-
-//
-// Nodes
-//
-
-template <class DATA_TYPE>
-LLLinkedQueueNode<DATA_TYPE>::LLLinkedQueueNode() :
- mData(), mNextp(NULL), mPrevp(NULL)
-{ }
-
-template <class DATA_TYPE>
-LLLinkedQueueNode<DATA_TYPE>::LLLinkedQueueNode(const DATA_TYPE data) :
- mData(data), mNextp(NULL), mPrevp(NULL)
-{ }
-
-template <class DATA_TYPE>
-LLLinkedQueueNode<DATA_TYPE>::~LLLinkedQueueNode()
-{ }
-
-
-//
-// Queue itself
-//
-
-template <class DATA_TYPE>
-LLLinkedQueue<DATA_TYPE>::LLLinkedQueue()
-: mHead(),
- mTail(),
- mLength(0)
-{ }
-
-
-// destructor destroys list and nodes, but not data in nodes
-template <class DATA_TYPE>
-LLLinkedQueue<DATA_TYPE>::~LLLinkedQueue()
-{
- reset();
-}
-
-
-// put data into a node and stick it at the end of the list
-template <class DATA_TYPE>
-void LLLinkedQueue<DATA_TYPE>::push(const DATA_TYPE data)
-{
- // make the new node
- LLLinkedQueueNode<DATA_TYPE> *nodep = new LLLinkedQueueNode<DATA_TYPE>(data);
-
- addNodeAtEnd(nodep);
-}
-
-
-// search the list starting at mHead.mNextp and remove the link with mDatap == data
-// set mCurrentp to mQueuep, or NULL if mQueuep points to node with mDatap == data
-// return TRUE if found, FALSE if not found
-template <class DATA_TYPE>
-BOOL LLLinkedQueue<DATA_TYPE>::remove(const DATA_TYPE data)
-{
- BOOL b_found = FALSE;
-
- LLLinkedQueueNode<DATA_TYPE> *currentp = mHead.mNextp;
-
- while (currentp)
- {
- if (currentp->mData == data)
- {
- b_found = TRUE;
-
- // if there is a next one, fix it
- if (currentp->mNextp)
- {
- currentp->mNextp->mPrevp = currentp->mPrevp;
- }
- else // we are at end of list
- {
- mTail.mPrevp = currentp->mPrevp;
- }
-
- // if there is a previous one, fix it
- if (currentp->mPrevp)
- {
- currentp->mPrevp->mNextp = currentp->mNextp;
- }
- else // we are at beginning of list
- {
- mHead.mNextp = currentp->mNextp;
- }
-
- // remove the node
- delete currentp;
- mLength--;
- break;
- }
- currentp = currentp->mNextp;
- }
-
- return b_found;
-}
-
-
-// remove all nodes from the list but do not delete associated data
-template <class DATA_TYPE>
-void LLLinkedQueue<DATA_TYPE>::reset()
-{
- LLLinkedQueueNode<DATA_TYPE> *currentp;
- LLLinkedQueueNode<DATA_TYPE> *nextp;
- currentp = mHead.mNextp;
-
- while (currentp)
- {
- nextp = currentp->mNextp;
- delete currentp;
- currentp = nextp;
- }
-
- // reset mHead and mCurrentp
- mHead.mNextp = NULL;
- mTail.mPrevp = NULL;
- mLength = 0;
-}
-
-template <class DATA_TYPE>
-S32 LLLinkedQueue<DATA_TYPE>::getLength() const
-{
- return mLength;
-}
-
-template <class DATA_TYPE>
-BOOL LLLinkedQueue<DATA_TYPE>::isEmpty() const
-{
- return mLength <= 0;
-}
-
-// check to see if data is in list
-// set mCurrentp and mQueuep to the target of search if found, otherwise set mCurrentp to mQueuep
-// return TRUE if found, FALSE if not found
-template <class DATA_TYPE>
-BOOL LLLinkedQueue<DATA_TYPE>::checkData(const DATA_TYPE data) const
-{
- LLLinkedQueueNode<DATA_TYPE> *currentp = mHead.mNextp;
-
- while (currentp)
- {
- if (currentp->mData == data)
- {
- return TRUE;
- }
- currentp = currentp->mNextp;
- }
- return FALSE;
-}
-
-template <class DATA_TYPE>
-BOOL LLLinkedQueue<DATA_TYPE>::pop(DATA_TYPE &data)
-{
- LLLinkedQueueNode<DATA_TYPE> *currentp;
-
- currentp = mHead.mNextp;
- if (!currentp)
- {
- return FALSE;
- }
-
- mHead.mNextp = currentp->mNextp;
- if (currentp->mNextp)
- {
- currentp->mNextp->mPrevp = currentp->mPrevp;
- }
- else
- {
- mTail.mPrevp = currentp->mPrevp;
- }
-
- data = currentp->mData;
- delete currentp;
- mLength--;
- return TRUE;
-}
-
-template <class DATA_TYPE>
-BOOL LLLinkedQueue<DATA_TYPE>::peek(DATA_TYPE &data)
-{
- LLLinkedQueueNode<DATA_TYPE> *currentp;
-
- currentp = mHead.mNextp;
- if (!currentp)
- {
- return FALSE;
- }
- data = currentp->mData;
- return TRUE;
-}
-
-
-//////////////////////////////////////////////////////////////////////////////////////////
-// private members
-//////////////////////////////////////////////////////////////////////////////////////////
-
-
-// add node to end of list
-// set mCurrentp to mQueuep
-template <class DATA_TYPE>
-void LLLinkedQueue<DATA_TYPE>::addNodeAtEnd(LLLinkedQueueNode<DATA_TYPE> *nodep)
-{
- // add the node to the end of the list
- nodep->mNextp = NULL;
- nodep->mPrevp = mTail.mPrevp;
- mTail.mPrevp = nodep;
-
- // if there's something in the list, fix its back pointer
- if (nodep->mPrevp)
- {
- nodep->mPrevp->mNextp = nodep;
- }
- else // otherwise fix the head node
- {
- mHead.mNextp = nodep;
- }
- mLength++;
-}
-
-#endif