Subversion Repositories shark

Rev

Rev 2 | Rev 79 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

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
 ------------
24
 CVS :        $Id: lmm.h,v 1.1.1.1 2002-03-29 14:12:51 pj Exp $
25
 
26
 File:        $File$
27
 Revision:    $Revision: 1.1.1.1 $
28
 Last update: $Date: 2002-03-29 14:12:51 $
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>
83
 
84
typedef DWORD lmm_flags_t;
85
typedef int   lmm_pri_t;
86
 
87
/* The contents of these structures are opaque to users.  */
88
typedef struct lmm_region
89
{
90
        struct lmm_region *next;
91
 
92
        /* List of free memory blocks in this region.  */
93
        struct lmm_node *nodes;
94
 
95
        /* Virtual addresses of the start and end of the memory region.  */
96
        DWORD min;
97
        DWORD max;
98
 
99
        /* Attributes of this memory.  */
100
        lmm_flags_t flags;
101
 
102
        /* Allocation priority of this region with respect to other regions.  */
103
        lmm_pri_t pri;
104
 
105
        /* Current amount of free space in this region in bytes.  */
106
        size_t free;
107
} lmm_region_t;
108
 
109
typedef struct lmm
110
{
111
        struct lmm_region *regions;
112
} lmm_t;
113
 
114
#define LMM_INITIALIZER { 0 }
115
 
116
// OSKIT_BEGIN_DECLS
117
 
118
void lmm_init(lmm_t *lmm);
119
void lmm_add_region(lmm_t *lmm, lmm_region_t *lmm_region,
120
                    void *addr, size_t size,
121
                    lmm_flags_t flags, lmm_pri_t pri);
122
void lmm_add_free(lmm_t *lmm, void *block, size_t size);
123
void lmm_remove_free(lmm_t *lmm, void *block, size_t size);
124
void *lmm_alloc(lmm_t *lmm, size_t size, lmm_flags_t flags);
125
void *lmm_alloc_aligned(lmm_t *lmm, size_t size, lmm_flags_t flags,
126
                        int align_bits, DWORD align_ofs);
127
void *lmm_alloc_page(lmm_t *lmm, lmm_flags_t flags);
128
void *lmm_alloc_gen(lmm_t *lmm, size_t size, lmm_flags_t flags,
129
                    int align_bits, DWORD align_ofs,
130
                    DWORD bounds_min, DWORD bounds_max);
131
size_t lmm_avail(lmm_t *lmm, lmm_flags_t flags);
132
void lmm_find_free(lmm_t *lmm, DWORD *inout_addr,
133
                   size_t *out_size, lmm_flags_t *out_flags);
134
void lmm_free(lmm_t *lmm, void *block, size_t size);
135
void lmm_free_page(lmm_t *lmm, void *block);
136
 
137
/* Only available if debugging turned on.  */
138
void lmm_dump(lmm_t *lmm);
139
void lmm_stats(lmm_t *lmm);
140
// OSKIT_END_DECLS
141
 
142
 
143
// this part was llm.h
144
 
145
#include <kernel/assert.h>
146
 
147
struct lmm_node
148
{
149
        struct lmm_node *next;
150
        size_t size;
151
};
152
 
153
#define ALIGN_SIZE      sizeof(struct lmm_node)
154
#define ALIGN_MASK      (ALIGN_SIZE - 1)
155
 
156
#define CHECKREGPTR(p)  { \
157
        assertk((reg->nodes == 0 && reg->free == 0) \
158
               || (DWORD)reg->nodes >= reg->min); \
159
        assertk(reg->nodes == 0 || (DWORD)reg->nodes < reg->max); \
160
        assertk(reg->free >= 0); \
161
        assertk(reg->free <= reg->max - reg->min); \
162
}
163
 
164
#endif