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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/* $OpenBSD: rf_debugMem.c,v 1.5 2002/12/16 07:01:03 tdeval Exp $ */
/* $NetBSD: rf_debugMem.c,v 1.7 2000/01/07 03:40:59 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Daniel Stodolsky, Mark Holland, Jim Zelenka
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* debugMem.c: Memory usage debugging stuff.
*
* Malloc, Calloc, and Free are #defined everywhere
* to do_malloc, do_calloc, and do_free.
*
* If RF_UTILITY is nonzero, it means we are compiling one of the
* RAIDframe utility programs, such as rfctrl or smd. In this
* case, we eliminate all references to the threads package
* and to the allocation list stuff.
*/
#include "rf_types.h"
#include "rf_threadstuff.h"
#include "rf_options.h"
#include "rf_debugMem.h"
#include "rf_general.h"
static long tot_mem_in_use = 0;
/* Hash table of information about memory allocations. */
#define RF_MH_TABLESIZE 1000
struct mh_struct {
void *address;
int size;
int line;
char *filen;
char allocated;
struct mh_struct *next;
};
static struct mh_struct *mh_table[RF_MH_TABLESIZE];
RF_DECLARE_MUTEX(rf_debug_mem_mutex);
static int mh_table_initialized = 0;
void rf_memory_hash_insert(void *, int, int, char *);
int rf_memory_hash_remove(void *, int);
void
rf_record_malloc(void *p, int size, int line, char *filen)
{
RF_ASSERT(size != 0);
/*RF_LOCK_MUTEX(rf_debug_mem_mutex);*/
rf_memory_hash_insert(p, size, line, filen);
tot_mem_in_use += size;
/*RF_UNLOCK_MUTEX(rf_debug_mem_mutex);*/
if ((long) p == rf_memDebugAddress) {
printf("Allocate: debug address allocated from line %d file"
" %s\n", line, filen);
}
}
void
rf_unrecord_malloc(void *p, int sz)
{
int size;
/*RF_LOCK_MUTEX(rf_debug_mem_mutex);*/
size = rf_memory_hash_remove(p, sz);
tot_mem_in_use -= size;
/*RF_UNLOCK_MUTEX(rf_debug_mem_mutex);*/
if ((long) p == rf_memDebugAddress) {
/* This is really only a flag line for gdb. */
printf("Free: Found debug address\n");
}
}
void
rf_print_unfreed(void)
{
int i, foundone = 0;
struct mh_struct *p;
for (i = 0; i < RF_MH_TABLESIZE; i++) {
for (p = mh_table[i]; p; p = p->next)
if (p->allocated) {
if (!foundone)
printf("\n\nThere are unfreed"
" memory locations at"
" program shutdown:\n");
foundone = 1;
printf("Addr 0x%lx Size %d line %d file %s\n",
(long) p->address, p->size, p->line,
p->filen);
}
}
if (tot_mem_in_use) {
printf("%ld total bytes in use\n", tot_mem_in_use);
}
}
int
rf_ConfigureDebugMem(RF_ShutdownList_t **listp)
{
int i, rc;
rc = rf_create_managed_mutex(listp, &rf_debug_mem_mutex);
if (rc) {
RF_ERRORMSG3("Unable to init mutex file %s line %d rc=%d\n",
__FILE__, __LINE__, rc);
return (rc);
}
if (rf_memDebug) {
for (i = 0; i < RF_MH_TABLESIZE; i++)
mh_table[i] = NULL;
mh_table_initialized = 1;
}
return (0);
}
#define HASHADDR(_a_) ( (((unsigned long) _a_)>>3) % RF_MH_TABLESIZE )
void
rf_memory_hash_insert(void *addr, int size, int line, char *filen)
{
unsigned long bucket = HASHADDR(addr);
struct mh_struct *p;
RF_ASSERT(mh_table_initialized);
/* Search for this address in the hash table. */
for (p = mh_table[bucket]; p && (p->address != addr); p = p->next);
if (!p) {
RF_Malloc(p, sizeof(struct mh_struct), (struct mh_struct *));
RF_ASSERT(p);
p->next = mh_table[bucket];
mh_table[bucket] = p;
p->address = addr;
p->allocated = 0;
}
if (p->allocated) {
printf("ERROR: Reallocated address 0x%lx from line %d,"
" file %s without intervening free\n", (long) addr,
line, filen);
printf(" Last allocated from line %d file %s\n",
p->line, p->filen);
RF_ASSERT(0);
}
p->size = size;
p->line = line;
p->filen = filen;
p->allocated = 1;
}
int
rf_memory_hash_remove(void *addr, int sz)
{
unsigned long bucket = HASHADDR(addr);
struct mh_struct *p;
RF_ASSERT(mh_table_initialized);
for (p = mh_table[bucket]; p && (p->address != addr); p = p->next);
if (!p) {
printf("ERROR: Freeing never-allocated address 0x%lx\n",
(long) addr);
RF_PANIC();
}
if (!p->allocated) {
printf("ERROR: Freeing unallocated address 0x%lx."
" Last allocation line %d file %s\n", (long) addr,
p->line, p->filen);
RF_PANIC();
}
if (sz > 0 && p->size != sz) {
/*
* This error can be suppressed by using a negative value
* as the size to free.
*/
printf("ERROR: Incorrect size at free for address 0x%lx:"
" is %d should be %d. Alloc at line %d of file %s\n",
(unsigned long) addr, sz, p->size, p->line, p->filen);
RF_PANIC();
}
p->allocated = 0;
return (p->size);
}
|
