internal calls to malloc(), free() from uclibc should go to uclibc implementation

[Saurov Shyam]

I have an uClibc wrapper library which does an implementation of malloc(), realloc() and free() that embedded some statistics gathering about memory allocations and then use the real malloc(), realloc(), free() definition of uClibc to perform the memory allocationand itself only embed the necessary logic to implement the statistics gathering function. The wrapper library is statically linked with the application. Please note that the intention of the wrapper is to hook and gather statistics only those calls which are going out of application.code snippet: uclibcmalloc = dlsym(RTLDNEXT, “malloc”); uclibcrealloc = dlsym(RTLDNEXT, “realloc”); uclibcfree = dlsym(RTLDNEXT, “free”);void * malloc(sizet sz) { … p = uclibcmalloc(sz); … return p;} void * realloc(void * oldp, sizet sz) {… p = uclibcrealloc(oldp, sz); … return p;} void free(void * p) { … uclibcfree(p); } malloc() and free() are working perfectly. But when realloc() is called the problem arises. The 
 uClibc realloc()internally calls malloc() for allocating the new pointer and free() to free the old pointer. When this malloc() and free() are getting called they are coming to my wrapper library implementation.I am expecting that the internal calls to malloc(), free() from uclibc should go to uclibc implementation directly, but it is not happening that way. Please advice, how to get rid of this issue. I want uClibc internal function calls should go to uClibc implementation only. Regards,AviDear uclibc ! Get Yourself a cool, short @in.com Email ID now!