/* $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_ */