13 /* My own versions of malloc, realloc and free. Because I want malloc and
14 * realloc to bomb out and exit the program if they run out of memory,
15 * realloc to reliably call malloc if passed a NULL pointer, and free
16 * to reliably do nothing if passed a NULL pointer. Of course we can also
17 * put trace printouts in, if we need to. */
20 static FILE *fp = NULL;
22 void mlog(char *file, int line) {
24 fp = fopen("putty_mem.log", "w");
25 setvbuf(fp, NULL, _IONBF, BUFSIZ);
28 fprintf (fp, "%s:%d: ", file, line);
32 void *safemalloc(size_t size) {
33 void *p = malloc (size);
35 MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error",
36 MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
41 fprintf(fp, "malloc(%d) returns %p\n", size, p);
46 void *saferealloc(void *ptr, size_t size) {
51 p = realloc (ptr, size);
53 MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error",
54 MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
59 fprintf(fp, "realloc(%p,%d) returns %p\n", ptr, size, p);
64 void safefree(void *ptr) {
68 fprintf(fp, "free(%p)\n", ptr);
74 fprintf(fp, "freeing null pointer - no action taken\n");