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alloc_cache.h
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1998-05-08
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/*
* @(#)alloc_cache.h 1.4 98/02/04
*
* Copyright 1993-1997 Sun Microsystems, Inc. 901 San Antonio Road,
* Palo Alto, California, 94303, U.S.A. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* CopyrightVersion 1.2
*
*/
/*
* Per-thread allocation cache
*/
#ifndef _ALLOC_CACHE_H_
#define _ALLOC_CACHE_H_
/* Default cache (refill) size */
#define ALLOC_CACHE_SIZE 1024
/* Default maximum local allocation size, must be less than cache size */
#define ALLOC_LOCAL_SIZE (ALLOC_CACHE_SIZE/4)
/* Default handle cache refill count */
#define ALLOC_HANDLE_COUNT (ALLOC_CACHE_SIZE/8/3)
/*
* Per-thread structure
*/
struct alloc_cache {
volatile char cache_busy;
char cache_pad[3];
long cache_size;
void *cache_tail;
void *cache_handles;
};
/* Cache (refill) size */
extern long allocCacheSize;
/* Allocations smaller than this are attempted from local cache. Use
0 to turn off local allocation. Must be less than cache size. */
extern long allocLocalSize;
/* Cache handle refill count */
extern long allocHandleCount;
/* Callback when thread exits */
extern void allocCacheCleanup(struct alloc_cache *);
#endif /* _ALLOC_CACHE_H */