/*
* heap_get_bestfit_block --
* extracts a memory block of equal size index
*/
int
heap_get_bestfit_block(PMEMobjpool *pop, struct bucket *b,
struct memory_block *m)
{
if (bucket_lock(b) != 0)
return EAGAIN;
int i;
uint32_t units = m->size_idx;
for (i = 0; i < MAX_BUCKET_REFILL; ++i) {
if (bucket_get_rm_block_bestfit(b, m) != 0)
heap_ensure_bucket_filled(pop, b, 1);
else
break;
}
if (i == MAX_BUCKET_REFILL) {
bucket_unlock(b);
return ENOMEM;
}
if (units != m->size_idx)
heap_recycle_block(pop, b, m, units);
bucket_unlock(b);
return 0;
}
/*
* heap_get_exact_block --
* extracts exactly this memory block and cuts it accordingly
*/
int
heap_get_exact_block(PMEMobjpool *pop, struct bucket *b,
struct memory_block *m, uint32_t units)
{
if (bucket_lock(b) != 0)
return EAGAIN;
if (bucket_get_rm_block_exact(b, *m) != 0)
return ENOMEM;
if (units != m->size_idx)
heap_recycle_block(pop, b, m, units);
bucket_unlock(b);
return 0;
}
/*
* heap_get_bestfit_block --
* extracts a memory block of equal size index
*/
int
heap_get_bestfit_block(struct palloc_heap *heap, struct bucket *b,
struct memory_block *m)
{
uint32_t units = m->size_idx;
while (b->c_ops->get_rm_bestfit(b->container, m) != 0) {
if (b->aclass->type == CLASS_HUGE) {
if (heap_ensure_huge_bucket_filled(heap) != 0)
return ENOMEM;
} else {
if (heap_ensure_run_bucket_filled(heap, b, units) != 0)
return ENOMEM;
}
}
ASSERT(m->size_idx >= units);
if (units != m->size_idx)
heap_recycle_block(heap, b, m, units);
return 0;
}