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BSc-Thesis/thesis/listings/intercept-wrap.c

28 lines
519 B
C

#include <stdio.h>
#include <stdlib.h>
extern void *__real_malloc(size_t);
static int mode = 0;
static void fin(void) {
if (mode > 0) fprintf(stderr, "intercept: stopped\n");
mode = 0;
}
static void init(void) {
if (mode) return;
mode = -1;
atexit(fin);
fprintf(stderr, "intercept: intercepting function calls\n");
mode = 1;
}
void *__wrap_malloc(size_t size) {
init();
// before call to malloc
void *ret = __real_malloc(size);
// after call to malloc
return ret;
}