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Diffstat (limited to 'monitor_mm.h')
-rw-r--r-- | monitor_mm.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/monitor_mm.h b/monitor_mm.h new file mode 100644 index 000000000..43442609c --- /dev/null +++ b/monitor_mm.h | |||
@@ -0,0 +1,64 @@ | |||
1 | /* | ||
2 | * Copyright 2002 Niels Provos <provos@citi.umich.edu> | ||
3 | * All rights reserved. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions | ||
7 | * are met: | ||
8 | * 1. Redistributions of source code must retain the above copyright | ||
9 | * notice, this list of conditions and the following disclaimer. | ||
10 | * 2. Redistributions in binary form must reproduce the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer in the | ||
12 | * documentation and/or other materials provided with the distribution. | ||
13 | * | ||
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | ||
15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | ||
16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | ||
17 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | ||
18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | ||
19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
24 | */ | ||
25 | |||
26 | #ifndef _MM_H_ | ||
27 | #define _MM_H_ | ||
28 | #include <sys/tree.h> | ||
29 | |||
30 | struct mm_share { | ||
31 | RB_ENTRY(mm_share) next; | ||
32 | void *address; | ||
33 | size_t size; | ||
34 | }; | ||
35 | |||
36 | struct mm_master { | ||
37 | RB_HEAD(mmtree, mm_share) rb_free; | ||
38 | struct mmtree rb_allocated; | ||
39 | void *address; | ||
40 | size_t size; | ||
41 | |||
42 | struct mm_master *mmalloc; /* Used to completely share */ | ||
43 | |||
44 | int write; /* used to writing to other party */ | ||
45 | int read; /* used for reading from other party */ | ||
46 | }; | ||
47 | |||
48 | RB_PROTOTYPE(mmtree, mm_share, next, mm_compare) | ||
49 | |||
50 | #define MM_MINSIZE 128 | ||
51 | |||
52 | #define MM_ADDRESS_END(x) (void *)((u_char *)(x)->address + (x)->size) | ||
53 | |||
54 | struct mm_master *mm_create(struct mm_master *, size_t); | ||
55 | void mm_destroy(struct mm_master *); | ||
56 | |||
57 | void mm_share_sync(struct mm_master **, struct mm_master **); | ||
58 | |||
59 | void *mm_malloc(struct mm_master *, size_t); | ||
60 | void *mm_xmalloc(struct mm_master *, size_t); | ||
61 | void mm_free(struct mm_master *, void *); | ||
62 | |||
63 | void mm_memvalid(struct mm_master *, void *, size_t); | ||
64 | #endif /* _MM_H_ */ | ||