[openssh.git] / monitor_mm.h

/*
 * 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_
#include <sys/tree.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_ */
Commit	Line	Data
1853d1ef	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_ */