git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@43212 65c4cc65-6c06-0410-ace0-fbb531ad65f3
445 lines
10 KiB
C
445 lines
10 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 1999 - 2006, Digium, Inc.
|
|
*
|
|
* Mark Spencer <markster@digium.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*! \file
|
|
*
|
|
* \brief Memory Management
|
|
*
|
|
* \author Mark Spencer <markster@digium.com>
|
|
*/
|
|
|
|
#ifdef __AST_DEBUG_MALLOC
|
|
|
|
#include "asterisk.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#include "asterisk/cli.h"
|
|
#include "asterisk/logger.h"
|
|
#include "asterisk/options.h"
|
|
#include "asterisk/lock.h"
|
|
#include "asterisk/strings.h"
|
|
#include "asterisk/unaligned.h"
|
|
|
|
#define SOME_PRIME 563
|
|
|
|
enum func_type {
|
|
FUNC_CALLOC = 1,
|
|
FUNC_MALLOC,
|
|
FUNC_REALLOC,
|
|
FUNC_STRDUP,
|
|
FUNC_STRNDUP,
|
|
FUNC_VASPRINTF,
|
|
FUNC_ASPRINTF
|
|
};
|
|
|
|
/* Undefine all our macros */
|
|
#undef malloc
|
|
#undef calloc
|
|
#undef realloc
|
|
#undef strdup
|
|
#undef strndup
|
|
#undef free
|
|
#undef vasprintf
|
|
#undef asprintf
|
|
|
|
#define FENCE_MAGIC 0xdeadbeef
|
|
|
|
static FILE *mmlog;
|
|
|
|
static struct ast_region {
|
|
struct ast_region *next;
|
|
char file[40];
|
|
char func[40];
|
|
unsigned int lineno;
|
|
enum func_type which;
|
|
size_t len;
|
|
unsigned int fence;
|
|
unsigned char data[0];
|
|
} *regions[SOME_PRIME];
|
|
|
|
#define HASH(a) \
|
|
(((unsigned long)(a)) % SOME_PRIME)
|
|
|
|
AST_MUTEX_DEFINE_STATIC(reglock);
|
|
AST_MUTEX_DEFINE_STATIC(showmemorylock);
|
|
|
|
#define astmm_log(...) \
|
|
do { \
|
|
fprintf(stderr, __VA_ARGS__); \
|
|
if (mmlog) { \
|
|
fprintf(mmlog, __VA_ARGS__); \
|
|
fflush(mmlog); \
|
|
} \
|
|
} while (0)
|
|
|
|
static inline void *__ast_alloc_region(size_t size, const enum func_type which, const char *file, int lineno, const char *func)
|
|
{
|
|
struct ast_region *reg;
|
|
void *ptr = NULL;
|
|
unsigned int *fence;
|
|
int hash;
|
|
|
|
if (!(reg = malloc(size + sizeof(*reg) + sizeof(*fence)))) {
|
|
astmm_log("Memory Allocation Failure - '%d' bytes in function %s "
|
|
"at line %d of %s\n", (int) size, func, lineno, file);
|
|
}
|
|
|
|
ast_copy_string(reg->file, file, sizeof(reg->file));
|
|
ast_copy_string(reg->func, func, sizeof(reg->func));
|
|
reg->lineno = lineno;
|
|
reg->len = size;
|
|
reg->which = which;
|
|
ptr = reg->data;
|
|
hash = HASH(ptr);
|
|
reg->fence = FENCE_MAGIC;
|
|
fence = (ptr + reg->len);
|
|
put_unaligned_uint32(fence, FENCE_MAGIC);
|
|
|
|
ast_mutex_lock(®lock);
|
|
reg->next = regions[hash];
|
|
regions[hash] = reg;
|
|
ast_mutex_unlock(®lock);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
static inline size_t __ast_sizeof_region(void *ptr)
|
|
{
|
|
int hash = HASH(ptr);
|
|
struct ast_region *reg;
|
|
size_t len = 0;
|
|
|
|
ast_mutex_lock(®lock);
|
|
for (reg = regions[hash]; reg; reg = reg->next) {
|
|
if (reg->data == ptr) {
|
|
len = reg->len;
|
|
break;
|
|
}
|
|
}
|
|
ast_mutex_unlock(®lock);
|
|
|
|
return len;
|
|
}
|
|
|
|
static void __ast_free_region(void *ptr, const char *file, int lineno, const char *func)
|
|
{
|
|
int hash = HASH(ptr);
|
|
struct ast_region *reg, *prev = NULL;
|
|
unsigned int *fence;
|
|
|
|
ast_mutex_lock(®lock);
|
|
for (reg = regions[hash]; reg; reg = reg->next) {
|
|
if (reg->data == ptr) {
|
|
if (prev)
|
|
prev->next = reg->next;
|
|
else
|
|
regions[hash] = reg->next;
|
|
break;
|
|
}
|
|
prev = reg;
|
|
}
|
|
ast_mutex_unlock(®lock);
|
|
|
|
if (reg) {
|
|
fence = (unsigned int *)(reg->data + reg->len);
|
|
if (reg->fence != FENCE_MAGIC) {
|
|
astmm_log("WARNING: Low fence violation at %p, in %s of %s, "
|
|
"line %d\n", reg->data, reg->func, reg->file, reg->lineno);
|
|
}
|
|
if (get_unaligned_uint32(fence) != FENCE_MAGIC) {
|
|
astmm_log("WARNING: High fence violation at %p, in %s of %s, "
|
|
"line %d\n", reg->data, reg->func, reg->file, reg->lineno);
|
|
}
|
|
free(reg);
|
|
} else {
|
|
astmm_log("WARNING: Freeing unused memory at %p, in %s of %s, line %d\n",
|
|
ptr, func, file, lineno);
|
|
}
|
|
}
|
|
|
|
void *__ast_calloc(size_t nmemb, size_t size, const char *file, int lineno, const char *func)
|
|
{
|
|
void *ptr;
|
|
|
|
if ((ptr = __ast_alloc_region(size * nmemb, FUNC_CALLOC, file, lineno, func)))
|
|
memset(ptr, 0, size * nmemb);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
void *__ast_malloc(size_t size, const char *file, int lineno, const char *func)
|
|
{
|
|
return __ast_alloc_region(size, FUNC_MALLOC, file, lineno, func);
|
|
}
|
|
|
|
void __ast_free(void *ptr, const char *file, int lineno, const char *func)
|
|
{
|
|
__ast_free_region(ptr, file, lineno, func);
|
|
}
|
|
|
|
void *__ast_realloc(void *ptr, size_t size, const char *file, int lineno, const char *func)
|
|
{
|
|
void *tmp;
|
|
size_t len = 0;
|
|
|
|
if (ptr && !(len = __ast_sizeof_region(ptr))) {
|
|
astmm_log("WARNING: Realloc of unalloced memory at %p, in %s of %s, "
|
|
"line %d\n", ptr, func, file, lineno);
|
|
return NULL;
|
|
}
|
|
|
|
if (!(tmp = __ast_alloc_region(size, FUNC_REALLOC, file, lineno, func)))
|
|
return NULL;
|
|
|
|
if (len > size)
|
|
len = size;
|
|
if (ptr) {
|
|
memcpy(tmp, ptr, len);
|
|
__ast_free_region(ptr, file, lineno, func);
|
|
}
|
|
|
|
return tmp;
|
|
}
|
|
|
|
char *__ast_strdup(const char *s, const char *file, int lineno, const char *func)
|
|
{
|
|
size_t len;
|
|
void *ptr;
|
|
|
|
if (!s)
|
|
return NULL;
|
|
|
|
len = strlen(s) + 1;
|
|
if ((ptr = __ast_alloc_region(len, FUNC_STRDUP, file, lineno, func)))
|
|
strcpy(ptr, s);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
char *__ast_strndup(const char *s, size_t n, const char *file, int lineno, const char *func)
|
|
{
|
|
size_t len;
|
|
void *ptr;
|
|
|
|
if (!s)
|
|
return NULL;
|
|
|
|
len = strlen(s) + 1;
|
|
if (len > n)
|
|
len = n;
|
|
if ((ptr = __ast_alloc_region(len, FUNC_STRNDUP, file, lineno, func)))
|
|
strcpy(ptr, s);
|
|
|
|
return ptr;
|
|
}
|
|
|
|
int __ast_asprintf(const char *file, int lineno, const char *func, char **strp, const char *fmt, ...)
|
|
{
|
|
int size;
|
|
va_list ap, ap2;
|
|
char s;
|
|
|
|
*strp = NULL;
|
|
va_start(ap, fmt);
|
|
va_copy(ap2, ap);
|
|
size = vsnprintf(&s, 1, fmt, ap2);
|
|
va_end(ap2);
|
|
if (!(*strp = __ast_alloc_region(size + 1, FUNC_ASPRINTF, file, lineno, func))) {
|
|
va_end(ap);
|
|
return -1;
|
|
}
|
|
vsnprintf(*strp, size + 1, fmt, ap);
|
|
va_end(ap);
|
|
|
|
return size;
|
|
}
|
|
|
|
int __ast_vasprintf(char **strp, const char *fmt, va_list ap, const char *file, int lineno, const char *func)
|
|
{
|
|
int size;
|
|
va_list ap2;
|
|
char s;
|
|
|
|
*strp = NULL;
|
|
va_copy(ap2, ap);
|
|
size = vsnprintf(&s, 1, fmt, ap2);
|
|
va_end(ap2);
|
|
if (!(*strp = __ast_alloc_region(size + 1, FUNC_VASPRINTF, file, lineno, func))) {
|
|
va_end(ap);
|
|
return -1;
|
|
}
|
|
vsnprintf(*strp, size + 1, fmt, ap);
|
|
|
|
return size;
|
|
}
|
|
|
|
static int handle_show_memory(int fd, int argc, char *argv[])
|
|
{
|
|
char *fn = NULL;
|
|
struct ast_region *reg;
|
|
unsigned int x;
|
|
unsigned int len = 0;
|
|
unsigned int count = 0;
|
|
unsigned int *fence;
|
|
|
|
if (argc > 3)
|
|
fn = argv[3];
|
|
|
|
ast_mutex_lock(&showmemorylock);
|
|
for (x = 0; x < SOME_PRIME; x++) {
|
|
for (reg = regions[x]; reg; reg = reg->next) {
|
|
if (!fn || !strcasecmp(fn, reg->file) || !strcasecmp(fn, "anomolies")) {
|
|
fence = (unsigned int *)(reg->data + reg->len);
|
|
if (reg->fence != FENCE_MAGIC) {
|
|
astmm_log("WARNING: Low fence violation at %p, "
|
|
"in %s of %s, line %d\n", reg->data,
|
|
reg->func, reg->file, reg->lineno);
|
|
}
|
|
if (get_unaligned_uint32(fence) != FENCE_MAGIC) {
|
|
astmm_log("WARNING: High fence violation at %p, in %s of %s, "
|
|
"line %d\n", reg->data, reg->func, reg->file, reg->lineno);
|
|
}
|
|
}
|
|
if (!fn || !strcasecmp(fn, reg->file)) {
|
|
ast_cli(fd, "%10d bytes allocated in %20s at line %5d of %s\n",
|
|
(int) reg->len, reg->func, reg->lineno, reg->file);
|
|
len += reg->len;
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
ast_mutex_unlock(&showmemorylock);
|
|
|
|
ast_cli(fd, "%d bytes allocated %d units total\n", len, count);
|
|
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static int handle_show_memory_summary(int fd, int argc, char *argv[])
|
|
{
|
|
char *fn = NULL;
|
|
int x;
|
|
struct ast_region *reg;
|
|
unsigned int len = 0;
|
|
int count = 0;
|
|
struct file_summary {
|
|
char fn[80];
|
|
int len;
|
|
int count;
|
|
struct file_summary *next;
|
|
} *list = NULL, *cur;
|
|
|
|
if (argc > 3)
|
|
fn = argv[3];
|
|
|
|
ast_mutex_lock(®lock);
|
|
for (x = 0; x < SOME_PRIME; x++) {
|
|
for (reg = regions[x]; reg; reg = reg->next) {
|
|
if (fn && strcasecmp(fn, reg->file))
|
|
continue;
|
|
|
|
for (cur = list; cur; cur = cur->next) {
|
|
if ((!fn && !strcmp(cur->fn, reg->file)) || (fn && !strcmp(cur->fn, reg->func)))
|
|
break;
|
|
}
|
|
if (!cur) {
|
|
cur = alloca(sizeof(*cur));
|
|
memset(cur, 0, sizeof(*cur));
|
|
ast_copy_string(cur->fn, fn ? reg->func : reg->file, sizeof(cur->fn));
|
|
cur->next = list;
|
|
list = cur;
|
|
}
|
|
|
|
cur->len += reg->len;
|
|
cur->count++;
|
|
}
|
|
}
|
|
ast_mutex_unlock(®lock);
|
|
|
|
/* Dump the whole list */
|
|
for (cur = list; cur; cur = cur->next) {
|
|
len += list->len;
|
|
count += list->count;
|
|
if (fn) {
|
|
ast_cli(fd, "%10d bytes in %5d allocations in function '%s' of '%s'\n",
|
|
list->len, list->count, list->fn, fn);
|
|
} else {
|
|
ast_cli(fd, "%10d bytes in %5d allocations in file '%s'\n",
|
|
list->len, list->count, list->fn);
|
|
}
|
|
}
|
|
|
|
ast_cli(fd, "%d bytes allocated %d units total\n", len, count);
|
|
|
|
return RESULT_SUCCESS;
|
|
}
|
|
|
|
static char show_memory_help[] =
|
|
"Usage: memory show allocations [<file>]\n"
|
|
" Dumps a list of all segments of allocated memory, optionally\n"
|
|
"limited to those from a specific file\n";
|
|
|
|
static char show_memory_summary_help[] =
|
|
"Usage: memory show summary [<file>]\n"
|
|
" Summarizes heap memory allocations by file, or optionally\n"
|
|
"by function, if a file is specified\n";
|
|
|
|
static struct ast_cli_entry cli_show_memory_allocations_deprecated = {
|
|
{ "show", "memory", "allocations", NULL },
|
|
handle_show_memory, NULL,
|
|
NULL };
|
|
|
|
static struct ast_cli_entry cli_show_memory_summary_deprecated = {
|
|
{ "show", "memory", "summary", NULL },
|
|
handle_show_memory_summary, NULL,
|
|
NULL };
|
|
|
|
static struct ast_cli_entry cli_memory[] = {
|
|
{ { "memory", "show", "allocations", NULL },
|
|
handle_show_memory, "Display outstanding memory allocations",
|
|
show_memory_help, NULL, &cli_show_memory_allocations },
|
|
|
|
{ { "memory", "show", "summary", NULL },
|
|
handle_show_memory_summary, "Summarize outstanding memory allocations",
|
|
show_memory_summary_help, NULL, &cli_show_memory_summary },
|
|
};
|
|
|
|
void __ast_mm_init(void)
|
|
{
|
|
char filename[PATH_MAX];
|
|
|
|
ast_cli_register_multiple(cli_memory, sizeof(cli_memory) / sizeof(struct ast_cli_entry));
|
|
|
|
snprintf(filename, sizeof(filename), "%s/mmlog", (char *)ast_config_AST_LOG_DIR);
|
|
|
|
if (option_verbose)
|
|
ast_verbose("Asterisk Malloc Debugger Started (see %s))\n", filename);
|
|
|
|
if ((mmlog = fopen(filename, "a+"))) {
|
|
fprintf(mmlog, "%ld - New session\n", time(NULL));
|
|
fflush(mmlog);
|
|
}
|
|
}
|
|
|
|
#endif
|