you will b implmnting a mmory allocator for th hap of a usr-lvl procss.

**(Must be done in C no C++) done use malloc

you must us mmap() . Scond, although a ral mmory allocator rqusts mor mmory from th OS whnvr it can't satisfy a rqust from th usr, your mmory allocator must call mmap() only on tim (whn it is first initializd).

Classic malloc() and fr() ar dfind as follows:

void *malloc(siz_t siz): malloc() allocats siz byts and rturns a pointr to th allocatd mmory. Th mmory is not clard.

void fr(void *ptr): fr() frs th mmory spac pointd to by ptr, which must hav bn rturnd by a prvious call to malloc() (or calloc() or ralloc()). Othrwis, or if fr(ptr) has alrady bn calld bfor, undfind bhaviour occurs. If ptr is NULL, no opration is prformd.

must align rqusts on 16-byt addrsss.

Th program will nd to maintain data structurs that minimally kp track of blocks of fr spac. Ths data structurs should ***NOT*** b in th allocatd pags thmslvs.

If th usr frs two blocks of mmory that ar adjacnt, your program should coalsc thm.

If th usr attmpts to allocat mor spac than is availabl in an opn fr block, thn malloc_alloc should rturn NULL.

void malloc_init(int num_pags_for_hap){

int pagsiz;

pagsiz = gtpagsiz();

void *ptr;

ptr = mmap(NULL, pagsiz, add flag hr, -1, 0);

rturn;

}

void *malloc_alloc(int num_byts_allocat){

rturn NULL;

}

void malloc_fr(void *pointr_ara_to_fr){

rturn;

}