xnu-3789.1.32.tar.gz

[apple/xnu.git] / osfmk / kern / kalloc.h

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/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
 * All Rights Reserved.
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 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
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 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

#ifdef	KERNEL_PRIVATE

#ifndef	_KERN_KALLOC_H_
#define _KERN_KALLOC_H_

#include <mach/machine/vm_types.h>
#include <mach/boolean.h>
#include <sys/cdefs.h>
#include <mach/vm_types.h>

__BEGIN_DECLS

#if XNU_KERNEL_PRIVATE

extern void *
kalloc_canblock(
		vm_size_t	         * size,
		boolean_t              canblock,
		vm_allocation_site_t * site);

extern vm_size_t
kalloc_size(
		void 				 * addr);

extern vm_size_t
kfree_addr(
		void 				 * addr);

extern vm_size_t
kalloc_bucket_size(
		vm_size_t 			   size);

#define kalloc(size)					\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))); \
	vm_size_t tsize = (size);			\
	kalloc_canblock(&tsize, TRUE, &site); })

#define kalloc_tag(size, tag)			\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))) \
		= { (tag), 0 }; 				\
	vm_size_t tsize = (size);			\
	kalloc_canblock(&tsize, TRUE, &site); })

#define kalloc_tag_bt(size, tag)		\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))) \
		= { (tag), VM_TAG_BT }; 		\
	vm_size_t tsize = (size);			\
	kalloc_canblock(&tsize, TRUE, &site); })

#define kalloc_noblock(size)			\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))); \
	vm_size_t tsize = (size);			\
	kalloc_canblock(&tsize, FALSE, &site); })

#define kalloc_noblock_tag(size, tag)	\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))) \
		= { (tag), 0 }; 		\
	vm_size_t tsize = (size);			\
	kalloc_canblock(&tsize, FALSE, &site); })

#define kalloc_noblock_tag_bt(size, tag)	\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))) \
		= { (tag), VM_TAG_BT }; 		\
	vm_size_t tsize = (size);			\
	kalloc_canblock(&tsize, FALSE, &site); })


/* these versions update the size reference with the actual size allocated */

#define kallocp(size)					\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))); \
	kalloc_canblock((size), TRUE, &site); })

#define kallocp_tag(size, tag)			\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))) \
		= { (tag), 0 }; 				\
	kalloc_canblock((size), TRUE, &site); })

#define kallocp_tag_bt(size, tag)		\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))) \
		= { (tag), VM_TAG_BT }; 		\
	kalloc_canblock((size), TRUE, &site); })

#define kallocp_noblock(size)			\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))); \
	kalloc_canblock((size), FALSE, &site); })

#define kallocp_noblock_tag_bt(size, tag)	\
	({ static vm_allocation_site_t site __attribute__((section("__DATA, __data"))) \
		= { (tag), VM_TAG_BT }; 		\
	kalloc_canblock((size), FALSE, &site); })



extern void kfree(void		*data,
		  vm_size_t	size);

#else /* XNU_KERNEL_PRIVATE */

extern void *kalloc(vm_size_t	size);

extern void *kalloc_noblock(vm_size_t	size);

extern void kfree(void		*data,
		  vm_size_t	size);

#endif /* !XNU_KERNEL_PRIVATE */

__END_DECLS

#ifdef	MACH_KERNEL_PRIVATE

extern void		kalloc_init(void);

extern void		kalloc_fake_zone_init( int );

extern void		kalloc_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,
				uint64_t	*sum_size,
				int		*collectable,
				int		*exhaustable,
				int		*caller_acct);

extern vm_size_t kalloc_max_prerounded;
extern vm_size_t kalloc_large_total;

#endif	/* MACH_KERNEL_PRIVATE */

#endif	/* _KERN_KALLOC_H_ */

#endif	/* KERNEL_PRIVATE */