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/**
* memory debugging
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#include "err.h"
#include "util.h"
#ifdef DEBUG_MEM
typedef struct debugnode_t {
char *file;
int line;
int size;
void *ptr;
struct debugnode_t *next;
} DEBUGNODE;
DEBUGNODE _debug_memlist = { NULL, 0, 0, NULL, NULL };
void debug_free(char *file, int line, void *ptr);
void *debug_malloc(char *file, int line, size_t size);
void *debug_realloc(char *file, int line, void *ptr, size_t size);
void *debug_calloc(char *file, int line, size_t count, size_t size);
char *debug_strdup(char *file, int line, const char *str);
void debug_dump(void);
void *_debug_alloc_nolock(char *file, int line, size_t size);
DEBUGNODE *_debug_find_ptr(void *ptr);
void _debug_register_ptr(char *file, int line, void *ptr, size_t size);
/**
* find a ptr in the node list, assuming the list is already
* locked.
*/
DEBUGNODE *_debug_find_ptr(void *ptr) {
DEBUGNODE *prev, *current;
prev = &_debug_memlist;
current = prev->next;
while(current) {
if(current->ptr == ptr)
return current;
prev = current;
current = current->next;
}
return NULL;
}
void *_debug_alloc_nolock(char *file, int line, size_t size) {
void *ptr;
ptr = malloc(size);
if(!ptr)
DPRINTF(E_FATAL,L_MISC,"Malloc failed in _debug_alloc\n");
_debug_register_ptr(file, line, ptr, size);
return ptr;
}
void _debug_register_ptr(char *file, int line, void *ptr, size_t size) {
DEBUGNODE *pnew;
pnew = (DEBUGNODE *)malloc(sizeof(DEBUGNODE));
if(!pnew)
DPRINTF(E_FATAL,L_MISC,"Malloc failed in _debug_alloc\n");
pnew->file = strdup(file);
pnew->line = line;
pnew->size = size;
pnew->ptr = ptr;
pnew->next = _debug_memlist.next;
_debug_memlist.next = pnew;
}
void debug_register(char *file, int line, void *ptr, size_t size) {
util_mutex_lock(l_memdebug);
_debug_register_ptr(file, line, ptr, size);
util_mutex_unlock(l_memdebug);
}
void *_debug_alloc(char *file, int line, int size) {
void *ptr;
util_mutex_lock(l_memdebug);
ptr = _debug_alloc_nolock(file, line, size);
util_mutex_unlock(l_memdebug);
return ptr;
}
void debug_dump(void) {
DEBUGNODE *current;
uint32_t size = 0;
int blocks = 0;
if(!_debug_memlist.next) {
DPRINTF(E_LOG,L_MISC,"No leaked memory!\n");
return;
}
current = _debug_memlist.next;
while(current) {
size += current->size;
blocks++;
current = current->next;
}
DPRINTF(E_WARN,L_MISC,"Leaked %d bytes in %d blocks\n",size, blocks);
current = _debug_memlist.next;
while(current) {
DPRINTF(E_WARN,L_MISC,"%d bytes: %s, line %d\n", current->size,
current->file, current->line);
util_hexdump(current->ptr,current->size);
current = current->next;
}
}
void debug_free(char *file, int line, void *ptr) {
DEBUGNODE *prev, *current;
util_mutex_lock(l_memdebug);
prev = &_debug_memlist;
current = prev->next;
while(current) {
if(current->ptr == ptr) {
/* found it */
break;
}
prev = current;
current = current->next;
}
if(!current) {
util_mutex_unlock(l_memdebug);
DPRINTF(E_FATAL,L_MISC,"Attempt to free an unallocated ptr: %s, %d\n",
file, line);
}
prev->next = current->next;
util_mutex_unlock(l_memdebug);
if(current) {
if(current->file)
free(current->file);
if(current->ptr)
free(current->ptr);
free(current);
}
return;
}
void *debug_malloc(char *file, int line, size_t size) {
void *ptr;
ptr = _debug_alloc(file,line,size);
return ptr;
}
void *debug_realloc(char *file, int line, void *ptr, size_t size) {
void *new_ptr;
DEBUGNODE *old_node;
int copy_size;
util_mutex_lock(l_memdebug);
old_node = _debug_find_ptr(ptr);
if(!old_node) {
util_mutex_unlock(l_memdebug);
DPRINTF(E_FATAL,L_MISC,"Attempt to realloc invalid ptr: %s, %d\n",
file, line);
}
new_ptr = _debug_alloc_nolock(file, line, size);
util_mutex_unlock(l_memdebug);
copy_size = old_node->size;
if(size < copy_size)
copy_size=size;
memcpy(new_ptr,old_node->ptr,copy_size);
debug_free(file, line, old_node->ptr);
return new_ptr;
}
void *debug_calloc(char *file, int line, size_t count, size_t size) {
void *ptr;
ptr = debug_malloc(file, line, count * size);
memset(ptr,0,count *size);
return ptr;
}
char *debug_strdup(char *file, int line, const char *str) {
void *ptr;
int size;
size = strlen(str);
ptr = debug_malloc(file, line, size + 1);
strcpy(ptr,str);
return ptr;
}
#endif
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