1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <polypcore/xmalloc.h>
#include "memblock.h"
static void stat_add(pa_memblock*m, pa_memblock_stat *s) {
assert(m);
if (!s) {
m->stat = NULL;
return;
}
m->stat = pa_memblock_stat_ref(s);
s->total++;
s->allocated++;
s->total_size += m->length;
s->allocated_size += m->length;
}
static void stat_remove(pa_memblock *m) {
assert(m);
if (!m->stat)
return;
m->stat->total--;
m->stat->total_size -= m->length;
pa_memblock_stat_unref(m->stat);
m->stat = NULL;
}
pa_memblock *pa_memblock_new(size_t length, pa_memblock_stat*s) {
pa_memblock *b = pa_xmalloc(sizeof(pa_memblock)+length);
b->type = PA_MEMBLOCK_APPENDED;
b->ref = 1;
b->length = length;
b->data = b+1;
b->free_cb = NULL;
b->read_only = 0;
stat_add(b, s);
return b;
}
pa_memblock *pa_memblock_new_dynamic(void *d, size_t length, pa_memblock_stat*s) {
pa_memblock *b = pa_xmalloc(sizeof(pa_memblock));
b->type = PA_MEMBLOCK_DYNAMIC;
b->ref = 1;
b->length = length;
b->data = d;
b->free_cb = NULL;
b->read_only = 0;
stat_add(b, s);
return b;
}
pa_memblock *pa_memblock_new_fixed(void *d, size_t length, int read_only, pa_memblock_stat*s) {
pa_memblock *b = pa_xmalloc(sizeof(pa_memblock));
b->type = PA_MEMBLOCK_FIXED;
b->ref = 1;
b->length = length;
b->data = d;
b->free_cb = NULL;
b->read_only = read_only;
stat_add(b, s);
return b;
}
pa_memblock *pa_memblock_new_user(void *d, size_t length, void (*free_cb)(void *p), int read_only, pa_memblock_stat*s) {
pa_memblock *b;
assert(d && length && free_cb);
b = pa_xmalloc(sizeof(pa_memblock));
b->type = PA_MEMBLOCK_USER;
b->ref = 1;
b->length = length;
b->data = d;
b->free_cb = free_cb;
b->read_only = read_only;
stat_add(b, s);
return b;
}
pa_memblock* pa_memblock_ref(pa_memblock*b) {
assert(b && b->ref >= 1);
b->ref++;
return b;
}
void pa_memblock_unref(pa_memblock*b) {
assert(b && b->ref >= 1);
if ((--(b->ref)) == 0) {
stat_remove(b);
if (b->type == PA_MEMBLOCK_USER) {
assert(b->free_cb);
b->free_cb(b->data);
} else if (b->type == PA_MEMBLOCK_DYNAMIC)
pa_xfree(b->data);
pa_xfree(b);
}
}
void pa_memblock_unref_fixed(pa_memblock *b) {
assert(b && b->ref >= 1 && b->type == PA_MEMBLOCK_FIXED);
if (b->ref == 1)
pa_memblock_unref(b);
else {
b->data = pa_xmemdup(b->data, b->length);
b->type = PA_MEMBLOCK_DYNAMIC;
b->ref--;
}
}
pa_memblock_stat* pa_memblock_stat_new(void) {
pa_memblock_stat *s;
s = pa_xmalloc(sizeof(pa_memblock_stat));
s->ref = 1;
s->total = s->total_size = s->allocated = s->allocated_size = 0;
return s;
}
void pa_memblock_stat_unref(pa_memblock_stat *s) {
assert(s && s->ref >= 1);
if (!(--(s->ref))) {
assert(!s->total);
pa_xfree(s);
}
}
pa_memblock_stat * pa_memblock_stat_ref(pa_memblock_stat *s) {
assert(s);
s->ref++;
return s;
}
|
