root/trunk/umem_base.h

Revision 59, 3.8 kB (checked in by wez, 4 years ago)

Sync with the current sources from onnv-gate.

The solaris sources use a non-portable create-thread-suspended flag when
spawning the update thread; I've thrown together a pthreads portable
equivalent. This has not had any real level of testing.

These changes include a lock around the underlying brk() call; the lack of lock
in earlier revisions of this repo may be the reason that
UMEM_OPTIONS=backend=sbrk was flaky.

  • Property svn:eol-style set to native
Line 
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 _UMEM_BASE_H
28 #define _UMEM_BASE_H
29
30 /* #pragma ident        "@(#)umem_base.h        1.4     05/06/08 SMI" */
31
32 #include <umem_impl.h>
33
34 #ifdef  __cplusplus
35 extern "C" {
36 #endif
37
38 #include "misc.h"
39
40 extern size_t pagesize;
41 #undef PAGESIZE
42 #define PAGESIZE        pagesize
43
44 /*
45  * umem.c: non-tunables
46  */
47 extern vmem_t           *umem_memalign_arena;
48
49 extern int umem_ready;
50 extern thread_t umem_init_thr;          /* the thread doing the init */
51
52 extern int umem_init(void);             /* do umem's initialization */
53 /* #pragma rarely_called(umem_init) */
54
55 extern umem_log_header_t *umem_transaction_log;
56 extern umem_log_header_t *umem_content_log;
57 extern umem_log_header_t *umem_failure_log;
58 extern umem_log_header_t *umem_slab_log;
59
60 extern mutex_t umem_init_lock;
61
62 extern mutex_t umem_cache_lock;
63 extern umem_cache_t umem_null_cache;
64
65 extern mutex_t umem_flags_lock;
66
67 extern mutex_t umem_update_lock;
68 extern cond_t umem_update_cv;
69 extern volatile thread_t umem_st_update_thr;
70 extern thread_t umem_update_thr;
71 extern struct timeval   umem_update_next;
72
73 extern volatile hrtime_t umem_reap_next;
74 extern volatile uint32_t umem_reaping;
75 #define UMEM_REAP_DONE          0x00000000      /* inactive */
76 #define UMEM_REAP_ADDING        0x00000001      /* umem_reap() is active */
77 #define UMEM_REAP_ACTIVE        0x00000002      /* update thread is reaping */
78
79 /*
80  * umem.c: tunables
81  */
82 extern uint32_t umem_max_ncpus;
83
84 extern uint32_t umem_stack_depth;
85 extern uint32_t umem_reap_interval;
86 extern uint32_t umem_update_interval;
87 extern uint32_t umem_depot_contention;
88 extern uint32_t umem_abort;
89 extern uint32_t umem_output;
90 extern uint32_t umem_logging;
91 extern uint32_t umem_mtbf;
92 extern size_t umem_transaction_log_size;
93 extern size_t umem_content_log_size;
94 extern size_t umem_failure_log_size;
95 extern size_t umem_slab_log_size;
96 extern size_t umem_content_maxsave;
97 extern size_t umem_lite_minsize;
98 extern size_t umem_lite_maxalign;
99 extern size_t umem_maxverify;
100 extern size_t umem_minfirewall;
101
102 extern uint32_t umem_flags;
103
104 /*
105  * umem.c: Internal aliases (to avoid PLTs)
106  */
107 extern void *_umem_alloc(size_t size, int umflags);
108 extern void *_umem_zalloc(size_t size, int umflags);
109 extern void _umem_free(void *buf, size_t size);
110
111 extern void *_umem_cache_alloc(umem_cache_t *cache, int flags);
112 extern void _umem_cache_free(umem_cache_t *cache, void *buffer);
113
114 /*
115  * umem.c: private interfaces
116  */
117 extern void umem_type_init(caddr_t, size_t, size_t);
118 extern int umem_get_max_ncpus(void);
119 extern void umem_process_updates(void);
120 extern void umem_cache_applyall(void (*)(umem_cache_t *));
121 extern void umem_cache_update(umem_cache_t *);
122
123 extern void umem_alloc_sizes_add(size_t);
124 extern void umem_alloc_sizes_clear(void);
125 extern void umem_alloc_sizes_remove(size_t);
126
127 /*
128  * umem_fork.c: private interfaces
129  */
130 extern void umem_forkhandler_init(void);
131
132 /*
133  * umem_update_thread.c
134  */
135 extern int umem_create_update_thread(void);
136
137 /*
138  * envvar.c:
139  */
140 void umem_setup_envvars(int);
141 void umem_process_envvars(void);
142
143 #ifdef  __cplusplus
144 }
145 #endif
146
147 #endif  /* _UMEM_BASE_H */
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