2 * Copyright (c) 2006 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 #include <sys/objcache.h>
36 struct objcache *cache;
37 struct objcache_malloc_args args;
41 * Add some magic numbers to catch double-frees earlier rather
52 #define TRACK_ALLOCATED 0x7AF45533
53 #define TRACK_FREED 0x7B056644
55 #define OBJHEADSIZE sizeof(struct acpiobjhead)
60 AcpiOsCreateCache(char *CacheName, UINT16 ObjectSize, UINT16 MaxDepth,
61 ACPI_CACHE_T **ReturnCache)
65 cache = kmalloc(sizeof(*cache), M_TEMP, M_WAITOK);
66 cache->args.objsize = OBJHEADSIZE + ObjectSize;
67 cache->args.mtype = M_CACHE;
68 cache->cache = objcache_create(CacheName, 0, 0, NULL, NULL,
69 NULL, objcache_malloc_alloc, objcache_malloc_free, &cache->args);
75 AcpiOsDeleteCache(ACPI_CACHE_T *Cache)
77 objcache_destroy(Cache->cache);
84 AcpiOsPurgeCache(ACPI_CACHE_T *Cache)
86 struct objcache *reclaimlist[] = { Cache->cache };
88 objcache_reclaimlist(reclaimlist, 1, M_WAITOK);
93 AcpiOsAcquireObject(ACPI_CACHE_T *Cache)
95 struct acpiobjhead *head;
97 head = objcache_get(Cache->cache, M_WAITOK);
98 bzero(head, Cache->args.objsize);
99 head->state = TRACK_ALLOCATED;
100 #ifdef ACPI_DEBUG_CACHE
102 head->func = "nowhere";
109 #ifdef ACPI_DEBUG_CACHE
110 _AcpiOsReleaseObject(ACPI_CACHE_T *Cache, void *Object,
111 const char *func, int line)
113 AcpiOsReleaseObject(ACPI_CACHE_T *Cache, void *Object)
116 struct acpiobjhead *head = (void *)((char *)Object - OBJHEADSIZE);
118 #ifdef ACPI_DEBUG_CACHE
119 if (head->cache != Cache) {
120 kprintf("%s: object %p belongs to %p, not %p\n",
121 __func__, Object, head->cache, Cache);
124 if (head->state != TRACK_ALLOCATED) {
125 if (head->state == TRACK_FREED) {
126 #ifdef ACPI_DEBUG_CACHE
127 kprintf("%s: Double Free %p, %s:%d, first %s:%d\n",
128 __func__, Object, func, line, head->func,
131 kprintf("%s: Double Free %p\n", __func__, Object);
134 kprintf("AcpiOsReleaseObject: Bad object %p (%08x)\n",
135 Object, head->state);
138 head->state = TRACK_FREED;
139 #ifdef ACPI_DEBUG_CACHE
143 objcache_put(Cache->cache, head);