//
// mm_init - Initialize the memory manager
//
int mm_init(void)
{
CL_init(&free_list);
// Create empty heap
if ((heap_listp = mem_sbrk(4*WSIZE)) == (void *)-1){
return -1;
}
//alignment padding
PUT(heap_listp, 0);
// prologue header
PUT(heap_listp + (WSIZE), PACK(DSIZE, 1));
//prologue footer
PUT(heap_listp + (DSIZE), PACK(DSIZE, 1));
//epilogue header
PUT(heap_listp + (3*WSIZE), PACK(0, 1));
heap_listp += (DSIZE);
//extend empty heap with free block of CHUNKSIZE byes
if (extend_heap(CHUNKSIZE/WSIZE) == NULL){
return -1;
}
return 0;
}
//
// mm_init - Initialize the memory manager
//
int mm_init(void)
{
CL_init(&free_list);
if ((heap_listp = mem_sbrk(4*WSIZE)) == (void *)-1) { // heap start
return -1;
}
PUT(heap_listp, 0);
PUT(heap_listp + (WSIZE), PACK(DSIZE, 1));
PUT(heap_listp + (DSIZE), PACK(DSIZE, 1));
PUT(heap_listp + (3 * WSIZE), PACK(0, 1));
heap_listp += (DSIZE);
if (extend_heap(CHUNKSIZE / WSIZE) == NULL) {
return -1;
}
return 0;
}