/*
* palloc_first -- returns the first object from the heap.
*/
uint64_t
palloc_first(struct palloc_heap *heap)
{
uint64_t off_search = UINT64_MAX;
struct memory_block m = {0, 0, 0, 0};
heap_foreach_object(heap, pmalloc_search_cb, &off_search, m);
if (off_search == UINT64_MAX)
return 0;
return off_search + sizeof(struct allocation_header);
}
/*
* palloc_first -- returns the first object from the heap.
*/
uint64_t
palloc_first(struct palloc_heap *heap)
{
struct memory_block search = MEMORY_BLOCK_NONE;
heap_foreach_object(heap, pmalloc_search_cb,
&search, MEMORY_BLOCK_NONE);
if (MEMORY_BLOCK_IS_NONE(search))
return 0;
void *uptr = search.m_ops->get_user_data(&search);
return HEAP_PTR_TO_OFF(heap, uptr);
}
/*
* palloc_next -- returns the next object relative to 'off'.
*/
uint64_t
palloc_next(struct palloc_heap *heap, uint64_t off)
{
struct memory_block m = memblock_from_offset(heap, off);
struct memory_block search = m;
heap_foreach_object(heap, pmalloc_search_cb, &search, m);
if (MEMORY_BLOCK_IS_NONE(search) ||
MEMORY_BLOCK_EQUALS(search, m))
return 0;
void *uptr = search.m_ops->get_user_data(&search);
return HEAP_PTR_TO_OFF(heap, uptr);
}
/*
* palloc_next -- returns the next object relative to 'off'.
*/
uint64_t
palloc_next(struct palloc_heap *heap, uint64_t off)
{
struct allocation_header *alloc = ALLOC_GET_HEADER(heap, off);
struct memory_block m = get_mblock_from_alloc(heap, alloc);
uint64_t off_search = off - ALLOC_OFF;
heap_foreach_object(heap, pmalloc_search_cb, &off_search, m);
if (off_search == (off - ALLOC_OFF) ||
off_search == 0 ||
off_search == UINT64_MAX)
return 0;
return off_search + sizeof(struct allocation_header);
}