| 1 | /* $OpenBSD: monitor_mm.h,v 1.2 2002/03/26 03:24:01 stevesk Exp $ */ |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright 2002 Niels Provos <provos@citi.umich.edu> |
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| 5 | * All rights reserved. |
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| 6 | * |
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| 7 | * Redistribution and use in source and binary forms, with or without |
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| 8 | * modification, are permitted provided that the following conditions |
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| 9 | * are met: |
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| 10 | * 1. Redistributions of source code must retain the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer. |
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 13 | * notice, this list of conditions and the following disclaimer in the |
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| 14 | * documentation and/or other materials provided with the distribution. |
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| 15 | * |
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 21 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 25 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 26 | */ |
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| 27 | |
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| 28 | #ifndef _MM_H_ |
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| 29 | #define _MM_H_ |
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| 30 | #include "openbsd-compat/sys-tree.h" |
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| 31 | |
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| 32 | struct mm_share { |
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| 33 | RB_ENTRY(mm_share) next; |
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| 34 | void *address; |
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| 35 | size_t size; |
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| 36 | }; |
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| 37 | |
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| 38 | struct mm_master { |
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| 39 | RB_HEAD(mmtree, mm_share) rb_free; |
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| 40 | struct mmtree rb_allocated; |
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| 41 | void *address; |
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| 42 | size_t size; |
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| 43 | |
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| 44 | struct mm_master *mmalloc; /* Used to completely share */ |
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| 45 | |
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| 46 | int write; /* used to writing to other party */ |
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| 47 | int read; /* used for reading from other party */ |
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| 48 | }; |
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| 49 | |
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| 50 | RB_PROTOTYPE(mmtree, mm_share, next, mm_compare) |
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| 51 | |
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| 52 | #define MM_MINSIZE 128 |
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| 53 | |
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| 54 | #define MM_ADDRESS_END(x) (void *)((u_char *)(x)->address + (x)->size) |
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| 55 | |
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| 56 | struct mm_master *mm_create(struct mm_master *, size_t); |
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| 57 | void mm_destroy(struct mm_master *); |
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| 58 | |
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| 59 | void mm_share_sync(struct mm_master **, struct mm_master **); |
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| 60 | |
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| 61 | void *mm_malloc(struct mm_master *, size_t); |
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| 62 | void *mm_xmalloc(struct mm_master *, size_t); |
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| 63 | void mm_free(struct mm_master *, void *); |
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| 64 | |
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| 65 | void mm_memvalid(struct mm_master *, void *, size_t); |
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| 66 | #endif /* _MM_H_ */ |
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