79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
/* sfzclfastalloc.h
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*/
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/*****************************************************************************
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* Copyright (c) 2006-2016 Rambus Inc. All Rights Reserved.
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*
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* The latest version of this code is available at http://www.matrixssl.org
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*
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* This software is open source; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This General Public License does NOT permit incorporating this software
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* into proprietary programs. If you are unable to comply with the GPL, a
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* commercial license for this software may be purchased from Rambus Inc at
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* http://www.rambus.com/
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*
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* This program is distributed in WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* http://www.gnu.org/copyleft/gpl.html
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*****************************************************************************/
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#ifndef SFZCLFASTALLOC_H_INCLUDED
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#define SFZCLFASTALLOC_H_INCLUDED
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typedef struct SfzclFastMemoryAllocatorRec *SfzclFastMemoryAllocator;
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/** Initialize a new memory allocator for fixed-sized blobs.
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`blob_size' is the size of the blobs. `blob_quant' is the number of
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blobs for which room will be reserved atomically. Both `blob_size'
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and `blob_quant' must be larger than zero. */
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SfzclFastMemoryAllocator sfzcl_fastalloc_initialize(int blob_size,
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int blob_quant);
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/** Uninitialize a memory allocator. All allocated blobs must have been
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freed, otherwise sfzcl_fatal() may be triggered. */
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void sfzcl_fastalloc_uninitialize(SfzclFastMemoryAllocator allocator);
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/** Allocate a new blob of the size `blob_size'. The returned data is
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correctly aligned for all kinds of purposes. The data is not
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necessarily initialized.
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This can return NULL if lower-level memory allocation can. */
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void *sfzcl_fastalloc_alloc(SfzclFastMemoryAllocator allocator);
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/** Free an individual blob. */
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void sfzcl_fastalloc_free(SfzclFastMemoryAllocator allocator, void *data);
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/** You do not need to access these structures directly but the
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declarations must be public so that the macros above can work. */
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typedef struct
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{
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void *free_chain;
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} SfzclFastallocProtoBlob;
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typedef struct sfzcl_fastalloc_blobs
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{
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void *blobs;
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struct sfzcl_fastalloc_blobs *next;
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} SfzclFastallocBlobs;
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struct SfzclFastMemoryAllocatorRec
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{
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int total_size;
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int allocated;
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int blob_size;
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int blob_quant;
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SfzclFastallocBlobs *blobs;
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SfzclFastallocProtoBlob *free_chain;
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};
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#endif /** SFZCLFASTALLOC_H_INCLUDED */
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