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98 lines
3.9 KiB
C
98 lines
3.9 KiB
C
/* poolmv.h: MANUAL VARIABLE POOL
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*
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* $Id$
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* Copyright (c) 2001 Ravenbrook Limited. See end of file for license.
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* Portions copyright (C) 2002 Global Graphics Software.
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*
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* .purpose: This is the interface to the manual-variable pool class.
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*
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* .mv: Manual-variable pools manage variably-sized blocks of memory in a
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* flexible manner. They have higher overheads than a fixed-size pool.
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*
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* .init: This class adds the following arguments to PoolCreate:
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*
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* Size extendBy
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*
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* extendBy is the default number of bytes reserved by the pool at a time.
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* A large size will make allocation cheaper but have a higher resource
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* overhead. A typical value might be 65536. See note 2.
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*
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* Size avgSize
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*
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* avgSize is an estimate of the average size of an allocation, and is used
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* to choose the size of internal tables. An accurate estimate will
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* improve the efficiency of the pool. A low estimate will make the pool
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* less space efficient. A high estimate will make the pool less time
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* efficient. A typical value might be 32. avgSize must not be less than
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* extendBy.
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*
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* Size maxSize
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*
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* maxSize is an estimate of the maximum total size that the pool will
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* reach. Setting this parameter does not actually contrain the pool, but
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* an accurate estimate will improve the efficiency of the pool. maxSize
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* must not be less than extendBy.
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*
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* Notes
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* 2. The documentation could suggest a segment size according to the
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* distribution of allocation size requests. richard 1994-11-08
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*/
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#ifndef poolmv_h
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#define poolmv_h
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#include "mpmtypes.h"
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typedef struct MVStruct *MV;
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extern PoolClass PoolClassMV(void);
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extern Bool MVCheck(MV mv);
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#define MV2Pool(mv) (&(mv)->poolStruct)
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#endif /* poolmv_h */
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/* C. COPYRIGHT AND LICENSE
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*
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* Copyright (C) 2001-2002 Ravenbrook Limited <http://www.ravenbrook.com/>.
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* All rights reserved. This is an open source license. Contact
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* Ravenbrook for commercial licensing options.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Redistributions in any form must be accompanied by information on how
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* to obtain complete source code for this software and any accompanying
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* software that uses this software. The source code must either be
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* included in the distribution or be available for no more than the cost
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* of distribution plus a nominal fee, and must be freely redistributable
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* under reasonable conditions. For an executable file, complete source
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* code means the source code for all modules it contains. It does not
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* include source code for modules or files that typically accompany the
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* major components of the operating system on which the executable file
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* runs.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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* PURPOSE, OR NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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