2 * Copyright (c) 2005 Jeffrey M. Hsu. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of The DragonFly Project nor the names of its
16 * contributors may be used to endorse or promote products derived
17 * from this software without specific, prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
28 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
29 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #ifndef _SYS_OBJCACHE_H_
34 #define _SYS_OBJCACHE_H_
37 #include <sys/types.h>
40 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
42 #ifndef _SYS__MALLOC_H_
43 #include <sys/_malloc.h>
46 #define OC_MFLAGS 0x0000ffff /* same as malloc flags */
48 typedef __boolean_t (objcache_ctor_fn)(void *obj, void *privdata, int ocflags);
49 typedef void (objcache_dtor_fn)(void *obj, void *privdata);
52 * Underlying allocator.
54 typedef void *(objcache_alloc_fn)(void *allocator_args, int ocflags);
55 typedef void (objcache_free_fn)(void *obj, void *allocator_args);
62 *objcache_create(const char *name, int cluster_limit, int nom_cache,
63 objcache_ctor_fn *ctor, objcache_dtor_fn *dtor,
65 objcache_alloc_fn *alloc, objcache_free_fn *free,
66 void *allocator_args);
68 *objcache_create_simple(malloc_type_t mtype, size_t objsize);
70 *objcache_create_mbacked(malloc_type_t mtype, size_t objsize,
71 int cluster_limit, int nom_cache,
72 objcache_ctor_fn *ctor, objcache_dtor_fn *dtor,
74 void objcache_set_cluster_limit(struct objcache *oc, int cluster_limit);
75 void *objcache_get(struct objcache *oc, int ocflags);
76 void objcache_put(struct objcache *oc, void *obj);
77 void objcache_dtor(struct objcache *oc, void *obj);
78 void objcache_populate_linear(struct objcache *oc, void *elts, int nelts,
80 __boolean_t objcache_reclaimlist(struct objcache *oc[], int nlist);
81 void objcache_destroy(struct objcache *oc);
86 * Common underlying allocators.
88 struct objcache_malloc_args {
95 void *objcache_malloc_alloc(void *allocator_args, int ocflags) __malloclike;
96 void *objcache_malloc_alloc_zero(void *allocator_args, int ocflags)
98 void objcache_malloc_free(void *obj, void *allocator_args);
100 void *objcache_nop_alloc(void *allocator_args, int ocflags);
101 void objcache_nop_free(void *obj, void *allocator_args);
105 #endif /* _KERNEL || _KERNEL_STRUCTURES */
107 #define OBJCACHE_UNLIMITED 0x40000000
108 #define OBJCACHE_NAMELEN 32
110 struct objcache_stats {
111 char oc_name[OBJCACHE_NAMELEN]; /* \0 term. */
114 * >= OBJCACHE_UNLIMITED, if unlimited.
124 u_long oc_reserved[5]; /* reserved 0. */
127 #endif /* !_SYS_OBJCACHE_H_ */