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153 lines
2.9 KiB
C
153 lines
2.9 KiB
C
/*
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* Debugging implementation of MALLOC and friends
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "mem.h"
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#if defined(DBG_MEMLEAKS)
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typedef struct
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{
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void *mem;
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char *allocated_in_func;
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char *allocated_in_file;
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unsigned int allocated_in_line;
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}
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MemDesc;
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static int initialized = 0;
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static int alloc_count = 0;
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static MemDesc *alloc_list = NULL;
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static void
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dbg_memleaks_done (int exitcode, void *dummy)
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{
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unsigned int i;
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(void) dummy;
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if (exitcode == 0 && alloc_count != 0) {
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fprintf (stderr, "\nmemory leak detected !!!\n");
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fprintf (stderr, "\nalloc_count == %i\n\n", alloc_count);
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for (i = 0; i < alloc_count; i++) {
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MemDesc *d = &alloc_list[i];
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fprintf (stderr, "chunk %p allocated in %s (%s: %u) not free'd !!\n",
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d->mem, d->allocated_in_func, d->allocated_in_file,
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d->allocated_in_line);
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}
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free (alloc_list);
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}
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fprintf (stderr, "\n");
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}
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static void
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dbg_memleaks_init (void)
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{
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on_exit (dbg_memleaks_done, NULL);
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initialized = 1;
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}
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void *
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dbg_malloc (char *file, int line, char *func, size_t bytes)
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{
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void *mem = (void *) malloc (bytes);
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MemDesc *d;
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if (!initialized)
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dbg_memleaks_init ();
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alloc_count++;
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alloc_list = realloc (alloc_list, alloc_count * sizeof (MemDesc));
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d = &alloc_list[alloc_count - 1];
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d->mem = mem;
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d->allocated_in_func = func;
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d->allocated_in_file = file;
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d->allocated_in_line = line;
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return mem;
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}
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void *
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dbg_calloc (char *file, int line, char *func, size_t count, size_t bytes)
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{
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void *mem = (void *) calloc (count, bytes);
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MemDesc *d;
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if (!initialized)
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dbg_memleaks_init ();
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alloc_count++;
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alloc_list = realloc (alloc_list, alloc_count * sizeof (MemDesc));
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d = &alloc_list[alloc_count - 1];
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d->mem = mem;
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d->allocated_in_func = func;
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d->allocated_in_file = file;
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d->allocated_in_line = line;
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return mem;
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}
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void *
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dbg_realloc (char *file, int line, char *func, char *what,
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void *mem, size_t bytes)
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{
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unsigned int i;
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for (i = 0; i < alloc_count; i++) {
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if (alloc_list[i].mem == mem) {
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alloc_list[i].mem = (void *) realloc (mem, bytes);
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return alloc_list[i].mem;
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}
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}
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if (mem != NULL) {
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fprintf (stderr,
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"%s: trying to reallocate unknown chunk %p (%s)\n"
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" in %s (%s: %u) !!!\n",
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__FUNCTION__, mem, what, func, file, line);
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exit (-1);
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}
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return dbg_malloc (file, line, func, bytes);
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}
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void
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dbg_free (char *file, int line, char *func, char *what, void *mem)
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{
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unsigned int i;
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if (!initialized)
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dbg_memleaks_init ();
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for (i = 0; i < alloc_count; i++) {
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if (alloc_list[i].mem == mem) {
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free (mem);
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alloc_count--;
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memmove (&alloc_list[i], &alloc_list[i + 1],
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(alloc_count - i) * sizeof (MemDesc));
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return;
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}
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}
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fprintf (stderr, "%s: trying to free unknown chunk %p (%s)\n"
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" in %s (%s: %u) !!!\n",
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__FUNCTION__, mem, what, func, file, line);
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exit (-1);
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}
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#endif
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