| 1 | #include <windows.h> |
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | #include "putty.h" |
| 5 | |
| 6 | /* My own versions of malloc, realloc and free. Because I want malloc and |
| 7 | * realloc to bomb out and exit the program if they run out of memory, |
| 8 | * realloc to reliably call malloc if passed a NULL pointer, and free |
| 9 | * to reliably do nothing if passed a NULL pointer. Of course we can also |
| 10 | * put trace printouts in, if we need to. */ |
| 11 | |
| 12 | #ifdef MALLOC_LOG |
| 13 | static FILE *fp = NULL; |
| 14 | |
| 15 | void mlog(char *file, int line) { |
| 16 | if (!fp) |
| 17 | fp = fopen("putty_mem.log", "w"); |
| 18 | if (fp) |
| 19 | fprintf (fp, "%s:%d: ", file, line); |
| 20 | } |
| 21 | #endif |
| 22 | |
| 23 | void *safemalloc(size_t size) { |
| 24 | void *p = malloc (size); |
| 25 | if (!p) { |
| 26 | MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error", |
| 27 | MB_SYSTEMMODAL | MB_ICONERROR | MB_OK); |
| 28 | exit(1); |
| 29 | } |
| 30 | #ifdef MALLOC_LOG |
| 31 | if (fp) |
| 32 | fprintf(fp, "malloc(%d) returns %p\n", size, p); |
| 33 | #endif |
| 34 | return p; |
| 35 | } |
| 36 | |
| 37 | void *saferealloc(void *ptr, size_t size) { |
| 38 | void *p; |
| 39 | if (!ptr) |
| 40 | p = malloc (size); |
| 41 | else |
| 42 | p = realloc (ptr, size); |
| 43 | if (!p) { |
| 44 | MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error", |
| 45 | MB_SYSTEMMODAL | MB_ICONERROR | MB_OK); |
| 46 | exit(1); |
| 47 | } |
| 48 | #ifdef MALLOC_LOG |
| 49 | if (fp) |
| 50 | fprintf(fp, "realloc(%p,%d) returns %p\n", ptr, size, p); |
| 51 | #endif |
| 52 | return p; |
| 53 | } |
| 54 | |
| 55 | void safefree(void *ptr) { |
| 56 | if (ptr) { |
| 57 | #ifdef MALLOC_LOG |
| 58 | if (fp) |
| 59 | fprintf(fp, "free(%p)\n", ptr); |
| 60 | #endif |
| 61 | free (ptr); |
| 62 | } |
| 63 | #ifdef MALLOC_LOG |
| 64 | else if (fp) |
| 65 | fprintf(fp, "freeing null pointer - no action taken\n"); |
| 66 | #endif |
| 67 | } |