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
171
|
/* $Header: /home/cvsroot/dvipdfmx/src/mem.c,v 1.8 2009/09/18 23:56:02 matthias Exp $
This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks.
Copyright (C) 2002 by Jin-Hwan Cho and Shunsaku Hirata,
the dvipdfmx project team <dvipdfmx@project.ktug.or.kr>
Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include "system.h"
#include "mem.h"
#include "error.h"
#ifdef MEM_DEBUG
#include "dpxutil.h"
#define MEM_LINE 128
static struct ht_table *mem_ht;
static long int mem_event;
static int mem_internal;
char *mem_str;
void mem_debug_init(void)
{
mem_event = 0;
mem_internal = 0;
mem_ht = malloc(sizeof(struct ht_table));
ht_init_table(mem_ht, NULL);
fprintf(stderr, "*** Memory debugging started ***\n");
}
void mem_debug_check(void)
{
struct ht_iter iter;
fprintf(stderr, "*** Memory still in use ***\n");
if (ht_set_iter(mem_ht, &iter) == 0) {
do {
int pl;
void *p = *((void **) ht_iter_getkey(&iter, &pl));
char *s = ht_iter_getval(&iter);
fprintf(stderr, "%p %s\n", p, s);
} while (!ht_iter_next(&iter));
}
ht_clear_iter(&iter);
fprintf(stderr, "*** End of used memory ***\n");
}
void *mem_add(void *ptr, const char *file, const char *function, int line) {
if (ptr && !mem_internal) {
mem_internal = 1;
mem_str = malloc(MEM_LINE);
char **p = malloc(sizeof(ptr));
*p = ptr;
snprintf(mem_str, MEM_LINE, "(0x%08lx) %s (%s, %d)"
#ifdef __GNUC__
", %p" //" %p"
#endif
, ++mem_event, function, file, line
#ifdef __GNUC__
, __builtin_return_address(1) //, __builtin_return_address(2)
#endif
);
ht_append_table(mem_ht, p, sizeof(ptr), mem_str);
mem_internal = 0;
}
return ptr;
}
void *mem_remove(void *ptr, const char *file, const char *function, int line) {
if (ptr && !mem_internal) {
mem_internal = 1;
if (!(mem_ht && ht_remove_table(mem_ht, &ptr, sizeof(ptr)))) {
WARN("Trying to free non-allocated memory\n"
"%p %s (%s, %d)"
#ifdef __GNUC__
", called from %p"
#endif
"\n", ptr, function, file, line
#ifdef __GNUC__
, __builtin_return_address(1)
#endif
);
}
mem_internal = 0;
}
return ptr;
}
#else /* ! MEM_DEBUG */
static long int mem_count;
void mem_debug_init(void)
{
mem_count = 0;
}
void mem_debug_check(void)
{
if (mem_count)
WARN("%ld memory objects still allocated\n", mem_count);
}
void *mem_add(void *ptr) {
if (ptr)
mem_count++;
return ptr;
}
void *mem_remove(void *ptr) {
if (ptr)
mem_count--;
return ptr;
}
#endif /* MEM_DEBUG */
void *new (size_t size)
{
void *result = malloc (size);
if (!result) {
ERROR("Out of memory - asked for %lu bytes\n", (unsigned long) size);
}
return result;
}
void *renew (void *mem, size_t size)
{
if (size) {
void *result = realloc (mem, size);
if (!result) {
ERROR("Out of memory - asked for %lu bytes\n", (unsigned long) size);
}
return result;
} else {
/* realloc may not return NULL if size == 0 */
free(mem);
return NULL;
}
}
|
