/*
* heap_init -- initializes the heap
*
* If successful function returns zero. Otherwise an error number is returned.
*/
int
heap_init(void *heap_start, uint64_t heap_size, struct pmem_ops *p_ops)
{
if (heap_size < HEAP_MIN_SIZE)
return EINVAL;
VALGRIND_DO_MAKE_MEM_UNDEFINED(heap_start, heap_size);
struct heap_layout *layout = heap_start;
heap_write_header(&layout->header, heap_size);
pmemops_persist(p_ops, &layout->header, sizeof(struct heap_header));
unsigned zones = heap_max_zone(heap_size);
for (unsigned i = 0; i < zones; ++i) {
pmemops_memset_persist(p_ops,
&ZID_TO_ZONE(layout, i)->header,
0, sizeof(struct zone_header));
pmemops_memset_persist(p_ops,
&ZID_TO_ZONE(layout, i)->chunk_headers,
0, sizeof(struct chunk_header));
/* only explicitly allocated chunks should be accessible */
VALGRIND_DO_MAKE_MEM_NOACCESS(
&ZID_TO_ZONE(layout, i)->chunk_headers,
sizeof(struct chunk_header));
}
return 0;
}
/*
* pvector_array_constr -- (internal) constructor of a new vector array.
*
* The vectors MUST be zeroed because non-zero array elements are treated as
* vector values.
*/
static int
pvector_array_constr(void *ctx, void *ptr, size_t usable_size, void *arg)
{
PMEMobjpool *pop = ctx;
/*
* Vectors are used as transaction logs, valgrind shouldn't warn about
* storing things inside of them.
* This memory range is removed from tx when the array is freed as a
* result of pop_back or when the transaction itself ends.
*/
VALGRIND_ADD_TO_TX(ptr, usable_size);
pmemops_memset_persist(&pop->p_ops, ptr, 0, usable_size);
return 0;
}