WebSVN - shark - Blame - Rev 1621 - /shark/branches/xen/include/kernel/lmm.h

Rev	Author	Line No.	Line
2	pj	1	/*
		2	* Project: S.Ha.R.K.
		3	*
		4	* Coordinators:
		5	* Giorgio Buttazzo <giorgio@sssup.it>
		6	* Paolo Gai <pj@gandalf.sssup.it>
		7	*
		8	* Authors :
		9	* Paolo Gai <pj@gandalf.sssup.it>
		10	* Massimiliano Giorgi <massy@gandalf.sssup.it>
		11	* Luca Abeni <luca@gandalf.sssup.it>
		12	* (see the web pages for full authors list)
		13	*
		14	* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
		15	*
		16	* http://www.sssup.it
		17	* http://retis.sssup.it
		18	* http://shark.sssup.it
		19	*/
		20
		21
		22	/**
		23	------------
79	pj	24	CVS : $Id: lmm.h,v 1.2 2003-03-13 13:36:28 pj Exp $
2	pj	25
		26	File: $File$
79	pj	27	Revision: $Revision: 1.2 $
		28	Last update: $Date: 2003-03-13 13:36:28 $
2	pj	29	------------
		30
		31	this code is from:
		32	List-based Memory Management, from OsKit.
		33
		34	it is used in kernel/mem.c to implement the memory allocators...
		35
		36	**/
		37
		38	/*
		39	* Copyright (C) 2000 Paolo Gai
		40	*
		41	* This program is free software; you can redistribute it and/or modify
		42	* it under the terms of the GNU General Public License as published by
		43	* the Free Software Foundation; either version 2 of the License, or
		44	* (at your option) any later version.
		45	*
		46	* This program is distributed in the hope that it will be useful,
		47	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		48	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		49	* GNU General Public License for more details.
		50	*
		51	* You should have received a copy of the GNU General Public License
		52	* along with this program; if not, write to the Free Software
		53	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		54	*
		55	*/
		56
		57	/*
		58	* Copyright (c) 1995-1996, 1998 University of Utah and the Flux Group.
		59	* All rights reserved.
		60	*
		61	* This file is part of the Flux OSKit. The OSKit is free software, also known
		62	* as "open source;" you can redistribute it and/or modify it under the terms
		63	* of the GNU General Public License (GPL), version 2, as published by the Free
		64	* Software Foundation (FSF). To explore alternate licensing terms, contact
		65	* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
		66	*
		67	* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
		68	* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
		69	* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
		70	* received a copy of the GPL along with the OSKit; see the file COPYING. If
		71	* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
		72	*/
		73
		74	/*
		75	* Public header file for the List Memory Manager.
		76	*/
		77	#ifndef __KERNEL_LMM_H__
		78	#define __KERNEL_LMM_H__
		79
		80	// this part was oskit/lmm.h
		81
		82	#include <sys/types.h>
1621	fabio	83	#include <arch/sys/cdefs.h>
2	pj	84
79	pj	85	__BEGIN_DECLS
2	pj	86	typedef DWORD lmm_flags_t;
		87	typedef int lmm_pri_t;
		88
		89	/* The contents of these structures are opaque to users. */
		90	typedef struct lmm_region
		91	{
		92	struct lmm_region *next;
		93
		94	/* List of free memory blocks in this region. */
		95	struct lmm_node *nodes;
		96
		97	/* Virtual addresses of the start and end of the memory region. */
		98	DWORD min;
		99	DWORD max;
		100
		101	/* Attributes of this memory. */
		102	lmm_flags_t flags;
		103
		104	/* Allocation priority of this region with respect to other regions. */
		105	lmm_pri_t pri;
		106
		107	/* Current amount of free space in this region in bytes. */
		108	size_t free;
		109	} lmm_region_t;
		110
		111	typedef struct lmm
		112	{
		113	struct lmm_region *regions;
		114	} lmm_t;
		115
		116	#define LMM_INITIALIZER { 0 }
		117
		118	// OSKIT_BEGIN_DECLS
		119
		120	void lmm_init(lmm_t *lmm);
		121	void lmm_add_region(lmm_t lmm, lmm_region_t lmm_region,
		122	void *addr, size_t size,
		123	lmm_flags_t flags, lmm_pri_t pri);
		124	void lmm_add_free(lmm_t lmm, void block, size_t size);
		125	void lmm_remove_free(lmm_t lmm, void block, size_t size);
		126	void lmm_alloc(lmm_t lmm, size_t size, lmm_flags_t flags);
		127	void lmm_alloc_aligned(lmm_t lmm, size_t size, lmm_flags_t flags,
		128	int align_bits, DWORD align_ofs);
		129	void lmm_alloc_page(lmm_t lmm, lmm_flags_t flags);
		130	void lmm_alloc_gen(lmm_t lmm, size_t size, lmm_flags_t flags,
		131	int align_bits, DWORD align_ofs,
		132	DWORD bounds_min, DWORD bounds_max);
		133	size_t lmm_avail(lmm_t *lmm, lmm_flags_t flags);
		134	void lmm_find_free(lmm_t lmm, DWORD inout_addr,
		135	size_t out_size, lmm_flags_t out_flags);
		136	void lmm_free(lmm_t lmm, void block, size_t size);
		137	void lmm_free_page(lmm_t lmm, void block);
		138
		139	/* Only available if debugging turned on. */
		140	void lmm_dump(lmm_t *lmm);
		141	void lmm_stats(lmm_t *lmm);
		142	// OSKIT_END_DECLS
		143
		144
		145	// this part was llm.h
		146
		147	#include <kernel/assert.h>
		148
		149	struct lmm_node
		150	{
		151	struct lmm_node *next;
		152	size_t size;
		153	};
		154
		155	#define ALIGN_SIZE sizeof(struct lmm_node)
		156	#define ALIGN_MASK (ALIGN_SIZE - 1)
		157
		158	#define CHECKREGPTR(p) { \
		159	assertk((reg->nodes == 0 && reg->free == 0) \
		160	\|\| (DWORD)reg->nodes >= reg->min); \
		161	assertk(reg->nodes == 0 \|\| (DWORD)reg->nodes < reg->max); \
		162	assertk(reg->free >= 0); \
		163	assertk(reg->free <= reg->max - reg->min); \
		164	}
		165
79	pj	166	__END_DECLS
2	pj	167	#endif

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