66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/* $OpenBSD: monitor_mm.h,v 1.4 2006/08/03 03:34:42 deraadt Exp $ */
|
|
|
|
/*
|
|
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _MM_H_
|
|
#define _MM_H_
|
|
|
|
struct mm_share {
|
|
RB_ENTRY(mm_share) next;
|
|
void *address;
|
|
size_t size;
|
|
};
|
|
|
|
struct mm_master {
|
|
RB_HEAD(mmtree, mm_share) rb_free;
|
|
struct mmtree rb_allocated;
|
|
void *address;
|
|
size_t size;
|
|
|
|
struct mm_master *mmalloc; /* Used to completely share */
|
|
|
|
int write; /* used to writing to other party */
|
|
int read; /* used for reading from other party */
|
|
};
|
|
|
|
RB_PROTOTYPE(mmtree, mm_share, next, mm_compare)
|
|
|
|
#define MM_MINSIZE 128
|
|
|
|
#define MM_ADDRESS_END(x) (void *)((u_char *)(x)->address + (x)->size)
|
|
|
|
struct mm_master *mm_create(struct mm_master *, size_t);
|
|
void mm_destroy(struct mm_master *);
|
|
|
|
void mm_share_sync(struct mm_master **, struct mm_master **);
|
|
|
|
void *mm_malloc(struct mm_master *, size_t);
|
|
void *mm_xmalloc(struct mm_master *, size_t);
|
|
void mm_free(struct mm_master *, void *);
|
|
|
|
void mm_memvalid(struct mm_master *, void *, size_t);
|
|
#endif /* _MM_H_ */
|