mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-01-10 09:58:01 +00:00
bbbda4110b
advantages: - protocol modules can call sk_write() without having to worry about writes blocking, because blocking writes are handled in the abstraction layer and retried later. - `Lost connection while sending' is a thing of the past. - <winsock.h> is no longer needed in most modules, because "putty.h" doesn't have to declare `SOCKET' variables any more, only the abstracted `Socket' type. - select()-equivalent between multiple sockets will now be handled sensibly, which opens the way for things like SSH port forwarding. [originally from svn r744]
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "putty.h"
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/* My own versions of malloc, realloc and free. Because I want malloc and
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* realloc to bomb out and exit the program if they run out of memory,
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* realloc to reliably call malloc if passed a NULL pointer, and free
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* to reliably do nothing if passed a NULL pointer. Of course we can also
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* put trace printouts in, if we need to. */
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#ifdef MALLOC_LOG
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static FILE *fp = NULL;
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void mlog(char *file, int line) {
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if (!fp) {
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fp = fopen("putty_mem.log", "w");
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setvbuf(fp, NULL, _IONBF, BUFSIZ);
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}
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if (fp)
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fprintf (fp, "%s:%d: ", file, line);
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}
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#endif
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void *safemalloc(size_t size) {
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void *p = malloc (size);
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if (!p) {
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MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error",
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MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
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exit(1);
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}
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#ifdef MALLOC_LOG
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if (fp)
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fprintf(fp, "malloc(%d) returns %p\n", size, p);
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#endif
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return p;
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}
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void *saferealloc(void *ptr, size_t size) {
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void *p;
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if (!ptr)
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p = malloc (size);
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else
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p = realloc (ptr, size);
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if (!p) {
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MessageBox(NULL, "Out of memory!", "PuTTY Fatal Error",
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MB_SYSTEMMODAL | MB_ICONERROR | MB_OK);
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exit(1);
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}
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#ifdef MALLOC_LOG
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if (fp)
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fprintf(fp, "realloc(%p,%d) returns %p\n", ptr, size, p);
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#endif
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return p;
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}
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void safefree(void *ptr) {
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if (ptr) {
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#ifdef MALLOC_LOG
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if (fp)
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fprintf(fp, "free(%p)\n", ptr);
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#endif
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free (ptr);
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}
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#ifdef MALLOC_LOG
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else if (fp)
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fprintf(fp, "freeing null pointer - no action taken\n");
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#endif
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}
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