/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2005 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@
*
*/
+#ifdef KERNEL_PRIVATE
+
#ifndef _KERN_ZALLOC_H_
#define _KERN_ZALLOC_H_
#include <mach/machine/vm_types.h>
#include <kern/kern_types.h>
+#include <sys/cdefs.h>
+
+#ifdef MACH_KERNEL_PRIVATE
-#ifdef MACH_KERNEL_PRIVATE
#include <zone_debug.h>
#include <mach_kdb.h>
#include <kern/lock.h>
+#include <kern/locks.h>
#include <kern/queue.h>
#include <kern/call_entry.h>
struct zone {
int count; /* Number of elements used now */
vm_offset_t free_elements;
+ decl_lck_mtx_data(,lock) /* zone lock */
+ lck_mtx_ext_t lock_ext; /* placeholder for indirect mutex */
+ lck_attr_t lock_attr; /* zone lock attribute */
+ lck_grp_t lock_grp; /* zone lock group */
+ lck_grp_attr_t lock_grp_attr; /* zone lock group attribute */
vm_size_t cur_size; /* current memory utilization */
vm_size_t max_size; /* how large can this zone grow */
vm_size_t elem_size; /* size of an element */
vm_size_t alloc_size; /* size used for more memory */
- char *zone_name; /* a name for the zone */
unsigned int
/* boolean_t */ exhaustible :1, /* (F) merely return if empty? */
/* boolean_t */ collectable :1, /* (F) garbage collect empty pages */
/* boolean_t */ allows_foreign :1,/* (F) allow non-zalloc space */
/* boolean_t */ doing_alloc :1, /* is zone expanding now? */
/* boolean_t */ waiting :1, /* is thread waiting for expansion? */
- /* boolean_t */ async_pending :1; /* asynchronous allocation pending? */
+ /* boolean_t */ async_pending :1, /* asynchronous allocation pending? */
+ /* boolean_t */ doing_gc :1; /* garbage collect in progress? */
struct zone * next_zone; /* Link for all-zones list */
call_entry_data_t call_async_alloc; /* callout for asynchronous alloc */
+ const char *zone_name; /* a name for the zone */
#if ZONE_DEBUG
queue_head_t active_zones; /* active elements */
#endif /* ZONE_DEBUG */
- decl_simple_lock_data(,lock) /* generic lock */
};
-
extern void zone_gc(void);
extern void consider_zone_gc(void);
extern void zone_steal_memory(void);
/* Bootstrap zone module (create zone zone) */
-extern void zone_bootstrap(void);
+extern void zone_bootstrap(void) __attribute__((section("__TEXT, initcode")));
/* Init zone module */
-extern void zone_init(vm_size_t);
+extern void zone_init(
+ vm_size_t map_size) __attribute__((section("__TEXT, initcode")));
-#endif /* ! MACH_KERNEL_PRIVATE */
+/* Stack use statistics */
+extern void stack_fake_zone_info(
+ int *count,
+ vm_size_t *cur_size,
+ vm_size_t *max_size,
+ vm_size_t *elem_size,
+ vm_size_t *alloc_size,
+ int *collectable,
+ int *exhaustable);
+#if ZONE_DEBUG
-/* Allocate from zone */
-extern vm_offset_t zalloc(
- zone_t zone);
+#if MACH_KDB
-/* Non-blocking version of zalloc */
-extern vm_offset_t zalloc_noblock(
- zone_t zone);
+extern void * next_element(
+ zone_t z,
+ void *elt);
-/* Get from zone free list */
-extern vm_offset_t zget(
- zone_t zone);
+extern void * first_element(
+ zone_t z);
-/* Create zone */
-extern zone_t zinit(
- vm_size_t size, /* the size of an element */
- vm_size_t max, /* maximum memory to use */
- vm_size_t alloc, /* allocation size */
- char *name); /* a name for the zone */
+#endif /* MACH_KDB */
+
+extern void zone_debug_enable(
+ zone_t z);
+
+extern void zone_debug_disable(
+ zone_t z);
+
+#endif /* ZONE_DEBUG */
+
+#endif /* MACH_KERNEL_PRIVATE */
+
+__BEGIN_DECLS
+
+#ifdef XNU_KERNEL_PRIVATE
+
+/* Allocate from zone */
+extern void * zalloc(
+ zone_t zone);
/* Free zone element */
extern void zfree(
- zone_t zone,
- vm_offset_t elem);
+ zone_t zone,
+ void *elem);
+
+/* Create zone */
+extern zone_t zinit(
+ vm_size_t size, /* the size of an element */
+ vm_size_t maxmem, /* maximum memory to use */
+ vm_size_t alloc, /* allocation size */
+ const char *name); /* a name for the zone */
+
+
+/* Non-blocking version of zalloc */
+extern void * zalloc_noblock(
+ zone_t zone);
+
+/* direct (non-wrappered) interface */
+extern void * zalloc_canblock(
+ zone_t zone,
+ boolean_t canblock);
+
+/* Get from zone free list */
+extern void * zget(
+ zone_t zone);
/* Fill zone with memory */
extern void zcram(
- zone_t zone,
- vm_offset_t newmem,
- vm_size_t size);
+ zone_t zone,
+ void *newmem,
+ vm_size_t size);
/* Initially fill zone with specified number of elements */
extern int zfill(
- zone_t zone,
- int nelem);
+ zone_t zone,
+ int nelem);
+
/* Change zone parameters */
extern void zone_change(
- zone_t zone,
- unsigned int item,
- boolean_t value);
-
-/* Preallocate space for zone from zone map */
-extern void zprealloc(
- zone_t zone,
- vm_size_t size);
-
-/*
- * zone_free_count returns a hint as to the current number of free elements
- * in the zone. By the time it returns, it may no longer be true (a new
- * element might have been added, or an element removed).
- * This routine may be used in conjunction with zcram and a lock to regulate
- * adding memory to a non-expandable zone.
- */
-extern integer_t zone_free_count(zone_t zone);
+ zone_t zone,
+ unsigned int item,
+ boolean_t value);
-/*
- * Item definitions for zone_change:
- */
+/* Item definitions */
#define Z_EXHAUST 1 /* Make zone exhaustible */
#define Z_COLLECT 2 /* Make zone collectable */
#define Z_EXPAND 3 /* Make zone expandable */
-#define Z_FOREIGN 4 /* Allow collectable zone to contain foreign */
- /* (not allocated via zalloc) elements. */
-#ifdef MACH_KERNEL_PRIVATE
-#if ZONE_DEBUG
-#if MACH_KDB
-extern vm_offset_t next_element(
- zone_t z,
- vm_offset_t elt);
+#define Z_FOREIGN 4 /* Allow collectable zone to contain foreign elements */
-extern vm_offset_t first_element(
- zone_t z);
-#endif /* MACH_KDB */
-extern void zone_debug_enable(
- zone_t z);
+/* Preallocate space for zone from zone map */
+extern void zprealloc(
+ zone_t zone,
+ vm_size_t size);
-extern void zone_debug_disable(
- zone_t z);
-#endif /* ZONE_DEBUG */
-#endif MACH_KERNEL_PRIVATE
+extern integer_t zone_free_count(
+ zone_t zone);
+
+#endif /* XNU_KERNEL_PRIVATE */
+
+__END_DECLS
#endif /* _KERN_ZALLOC_H_ */
+
+#endif /* KERNEL_PRIVATE */
projects / apple / xnu.git / blobdiff