xref: /titanic_44/usr/src/lib/libumem/common/vmem_base.h (revision 1a7c1b724419d3cb5fa6eea75123c6b2060ba31b)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_VMEM_BASE_H
28 #define	_VMEM_BASE_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include <sys/vmem.h>
33 #include <umem.h>
34 
35 #ifdef	__cplusplus
36 extern "C" {
37 #endif
38 
39 #include "misc.h"
40 
41 extern void vmem_startup(void);
42 extern vmem_t *vmem_init(const char *parent_name, size_t parent_quantum,
43 	vmem_alloc_t *parent_alloc, vmem_free_t *parent_free,
44 	const char *heap_name,
45 	void *heap_start, size_t heap_size, size_t heap_quantum,
46 	vmem_alloc_t *heap_alloc, vmem_free_t *heap_free);
47 
48 extern void *_vmem_extend_alloc(vmem_t *vmp, void *vaddr, size_t size,
49 	size_t alloc, int vmflag);
50 
51 extern vmem_t *vmem_heap_arena(vmem_alloc_t **, vmem_free_t **);
52 extern void vmem_heap_init(void);
53 
54 extern vmem_t *vmem_sbrk_arena(vmem_alloc_t **, vmem_free_t **);
55 extern vmem_t *vmem_mmap_arena(vmem_alloc_t **, vmem_free_t **);
56 extern vmem_t *vmem_stand_arena(vmem_alloc_t **, vmem_free_t **);
57 
58 extern void vmem_update(void *);
59 extern void vmem_reap(void);		/* vmem_populate()-safe reap */
60 
61 extern size_t pagesize;
62 extern size_t vmem_sbrk_pagesize;
63 
64 extern uint_t vmem_backend;
65 #define	VMEM_BACKEND_SBRK	0x0000001
66 #define	VMEM_BACKEND_MMAP	0x0000002
67 #define	VMEM_BACKEND_STAND	0x0000003
68 
69 extern vmem_t *vmem_heap;
70 extern vmem_alloc_t *vmem_heap_alloc;
71 extern vmem_free_t *vmem_heap_free;
72 
73 extern void vmem_lockup(void);
74 extern void vmem_release(void);
75 
76 extern void vmem_sbrk_lockup(void);
77 extern void vmem_sbrk_release(void);
78 
79 extern void vmem_no_debug(void);
80 
81 #ifdef	__cplusplus
82 }
83 #endif
84 
85 #endif	/* _VMEM_BASE_H */
86