pq.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: pq.h,v 1.3.22.3 2004/07/09 01:43:51 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. 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
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _PQ_H_
- #define _PQ_H_
- #include "id.h"
- #include "hxcom.h"
- #include "hxtypes.h"
- #include "hxcomm.h"
- #include "hxengin.h"
- #include "hxassert.h"
- #include "timeval.h"
- class CHXID;
- /*
- * Timing resolution is equal to 1/RESOLUTION seconds.
- * BUCKET_TIME is the amount of time that we would like buckets allocated for.
- * NUM_BUCKETS is the number of buckets that we will allocate.
- * USEC_PER_BUCKET is the number of microseconds per bucket.
- */
- #define RESOLUTION 64
- #define BUCKET_TIME 8
- #define NUM_BUCKETS (RESOLUTION * BUCKET_TIME)
- #define USEC_PER_BUCKET (1000000 / RESOLUTION)
- #define PQ_UNINITIALIZED 1
- class PQElem
- {
- public:
- FAST_CACHE_MEM
- PQElem() : m_pCallback(0), m_pNext(0), m_bDefunct(0), m_Id(0), m_bRemoved(0)
- {
- m_Time.tv_sec = 0;
- m_Time.tv_usec = 0;
- }
- IHXCallback* m_pCallback;
- PQElem* m_pNext;
- Timeval m_Time;
- BOOL m_bDefunct;
- BOOL m_bRemoved;
- UINT32 m_Id;
- };
- class PQ
- {
- protected:
- PQElem* _remove_head(Timeval now);
- PQElem* dispatch_element(PQElem* pElem);
- void destroy_element(PQElem* pElem);
- PQElem* m_pBuckets[NUM_BUCKETS];
- PQElem* m_pHead;
- PQElem* m_pNextZeroInsertion;
- LONG32 m_lElementCount;
- Timeval m_Bucket0Time;
- Timeval m_HeadTime;
- CHXID* m_pIds;
- BOOL m_bOwnID;
- public:
- PQ(CHXID* pIds = NULL);
- virtual ~PQ();
- virtual int execute(Timeval now);
- virtual UINT32 enter(Timeval t, IHXCallback* i);
- virtual PQElem* get_execute_list(Timeval now);
- virtual PQElem* execute_element(PQElem* pElem);
- virtual void free_callback(IHXCallback* pCb) { pCb->Release(); }
- virtual PQElem* new_elem(void) { return (new PQElem); }
- virtual void free_elem(PQElem*& pElem) { delete pElem; }
- virtual void free_mem() { }
- virtual void remove(UINT32 handle);
- virtual BOOL removeifexists(UINT32 handle);
- int empty() { return m_lElementCount == 0; }
- int immediate() { return (!empty()) && (m_HeadTime.tv_sec == 0 && m_HeadTime.tv_usec == 0); }
- Timeval head_time();
- BOOL exists(UINT32 handle);
- };
- inline Timeval
- PQ::head_time()
- {
- //ASSERT (m_HeadTime.tv_sec > 0);XXXSMP It should be ok that HeadTime == 0
- return m_HeadTime;
- }
- #endif