aboutsummaryrefslogtreecommitdiffstats
path: root/zfs/lib/libumem/include/umem_base.h
blob: e78bebfb589d9d59bbc1fd3debbd48864836f4bd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_UMEM_BASE_H
#define	_UMEM_BASE_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <umem_impl.h>

#ifdef	__cplusplus
extern "C" {
#endif

#include "misc.h"

extern size_t pagesize;
#undef PAGESIZE
#define	PAGESIZE	pagesize

/*
 * umem.c: non-tunables
 */
extern vmem_t		*umem_memalign_arena;

extern int umem_ready;
extern thread_t umem_init_thr;		/* the thread doing the init */

extern int umem_init(void);		/* do umem's initialization */
#pragma rarely_called(umem_init)

extern umem_log_header_t *umem_transaction_log;
extern umem_log_header_t *umem_content_log;
extern umem_log_header_t *umem_failure_log;
extern umem_log_header_t *umem_slab_log;

extern mutex_t umem_init_lock;

extern mutex_t umem_cache_lock;
extern umem_cache_t umem_null_cache;

extern mutex_t umem_flags_lock;

extern mutex_t umem_update_lock;
extern cond_t umem_update_cv;
extern volatile thread_t umem_st_update_thr;
extern thread_t umem_update_thr;
extern struct timeval	umem_update_next;

extern volatile hrtime_t umem_reap_next;
extern volatile uint32_t umem_reaping;
#define	UMEM_REAP_DONE		0x00000000	/* inactive */
#define	UMEM_REAP_ADDING	0x00000001	/* umem_reap() is active */
#define	UMEM_REAP_ACTIVE	0x00000002	/* update thread is reaping */

/*
 * umem.c: tunables
 */
extern uint32_t umem_max_ncpus;

extern uint32_t umem_stack_depth;
extern uint32_t umem_reap_interval;
extern uint32_t umem_update_interval;
extern uint32_t umem_depot_contention;
extern uint32_t umem_abort;
extern uint32_t umem_output;
extern uint32_t umem_logging;
extern uint32_t umem_mtbf;
extern size_t umem_transaction_log_size;
extern size_t umem_content_log_size;
extern size_t umem_failure_log_size;
extern size_t umem_slab_log_size;
extern size_t umem_content_maxsave;
extern size_t umem_lite_minsize;
extern size_t umem_lite_maxalign;
extern size_t umem_maxverify;
extern size_t umem_minfirewall;

extern uint32_t umem_flags;

/*
 * umem.c: Internal aliases (to avoid PLTs)
 */
extern void *_umem_alloc(size_t size, int umflags);
extern void *_umem_zalloc(size_t size, int umflags);
extern void _umem_free(void *buf, size_t size);

extern void *_umem_cache_alloc(umem_cache_t *cache, int flags);
extern void _umem_cache_free(umem_cache_t *cache, void *buffer);

/*
 * umem.c: private interfaces
 */
extern void umem_type_init(caddr_t, size_t, size_t);
extern int umem_get_max_ncpus(void);
extern void umem_process_updates(void);
extern void umem_cache_applyall(void (*)(umem_cache_t *));
extern void umem_cache_update(umem_cache_t *);

extern void umem_alloc_sizes_add(size_t);
extern void umem_alloc_sizes_clear(void);
extern void umem_alloc_sizes_remove(size_t);

/*
 * umem_fork.c: private interfaces
 */
extern void umem_forkhandler_init(void);

/*
 * umem_update_thread.c
 */
extern int umem_create_update_thread(void);

/*
 * envvar.c:
 */
void umem_setup_envvars(int);
void umem_process_envvars(void);

#ifdef	__cplusplus
}
#endif

#endif	/* _UMEM_BASE_H */