/*
- * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
zone_t kalloc_zone(vm_size_t);
#endif
+#define KALLOC_MAP_SIZE_MIN (16 * 1024 * 1024)
+#define KALLOC_MAP_SIZE_MAX (128 * 1024 * 1024)
vm_map_t kalloc_map;
-vm_size_t kalloc_map_size = 16 * 1024 * 1024;
vm_size_t kalloc_max;
vm_size_t kalloc_max_prerounded;
vm_size_t kalloc_kernmap_size; /* size of kallocs that can come from kernel map */
{
kern_return_t retval;
vm_offset_t min;
- vm_size_t size;
+ vm_size_t size, kalloc_map_size;
register int i;
+ /*
+ * Scale the kalloc_map_size to physical memory size: stay below
+ * 1/8th the total zone map size, or 128 MB.
+ */
+ kalloc_map_size = sane_size >> 5;
+ if (kalloc_map_size > KALLOC_MAP_SIZE_MAX)
+ kalloc_map_size = KALLOC_MAP_SIZE_MAX;
+ if (kalloc_map_size < KALLOC_MAP_SIZE_MIN)
+ kalloc_map_size = KALLOC_MAP_SIZE_MIN;
+
retval = kmem_suballoc(kernel_map, &min, kalloc_map_size,
FALSE, VM_FLAGS_ANYWHERE, &kalloc_map);
*/
for (i = 0, size = 1; size < kalloc_max; i++, size <<= 1) {
if (size < KALLOC_MINSIZE) {
- k_zone[i] = 0;
+ k_zone[i] = NULL;
continue;
}
if (size == KALLOC_MINSIZE) {
/* kmem_alloc could block so we return if noblock */
if (!canblock) {
- return(0);
+ return(NULL);
}
- if (size >= kalloc_kernmap_size) {
- alloc_map = kernel_map;
+ if (size >= kalloc_kernmap_size) {
+ alloc_map = kernel_map;
if (size > kalloc_largest_allocated)
kalloc_largest_allocated = size;
alloc_map = kalloc_map;
if (kmem_alloc(alloc_map, (vm_offset_t *)&addr, size) != KERN_SUCCESS)
- addr = 0;
+ addr = NULL;
if (addr) {
kalloc_large_inuse++;
if (KERN_SUCCESS != kmem_realloc(alloc_map,
(vm_offset_t)*addrp, old_size,
- (vm_offset_t *)&naddr, new_size)) {
+ (vm_offset_t *)&naddr, new_size))
panic("krealloc: kmem_realloc");
- naddr = 0;
- }
simple_lock(lock);
*addrp = (void *) naddr;
if (size > kalloc_largest_allocated)
/*
* work around double FREEs of small MALLOCs
- * this used to end up being a nop
+ * this use to end up being a nop
* since the pointer being freed from an
* alloc backed by the zalloc world could
* never show up in the kalloc_map... however,
if (!((tag->OSMT_state & OSMT_VALID_MASK) == OSMT_VALID))
panic("OSMalloc_Tagref(): bad state 0x%08X\n",tag->OSMT_state);
- (void)hw_atomic_add((uint32_t *)(&tag->OSMT_refcnt), 1);
+ (void)hw_atomic_add(&tag->OSMT_refcnt, 1);
}
void
if (!((tag->OSMT_state & OSMT_VALID_MASK) == OSMT_VALID))
panic("OSMalloc_Tagref(): bad state 0x%08X\n",tag->OSMT_state);
- if (hw_atomic_sub((uint32_t *)(&tag->OSMT_refcnt), 1) == 0) {
+ if (hw_atomic_sub(&tag->OSMT_refcnt, 1) == 0) {
if (hw_compare_and_store(OSMT_VALID|OSMT_RELEASED, OSMT_VALID|OSMT_RELEASED, &tag->OSMT_state)) {
simple_lock(&OSMalloc_tag_lock);
(void)remque((queue_entry_t)tag);
if (!hw_compare_and_store(OSMT_VALID, OSMT_VALID|OSMT_RELEASED, &tag->OSMT_state))
panic("OSMalloc_Tagfree(): bad state 0x%08X\n", tag->OSMT_state);
- if (hw_atomic_sub((uint32_t *)(&tag->OSMT_refcnt), 1) == 0) {
+ if (hw_atomic_sub(&tag->OSMT_refcnt, 1) == 0) {
simple_lock(&OSMalloc_tag_lock);
(void)remque((queue_entry_t)tag);
simple_unlock(&OSMalloc_tag_lock);
&& (size & ~PAGE_MASK)) {
if ((kr = kmem_alloc_pageable(kernel_map, (vm_offset_t *)&addr, size)) != KERN_SUCCESS)
- panic("OSMalloc(): kmem_alloc_pageable() failed 0x%08X\n", kr);
+ addr = NULL;
} else
addr = kalloc((vm_size_t)size);
+ if (!addr)
+ OSMalloc_Tagrele(tag);
+
return(addr);
}
projects / apple / xnu.git / blobdiff