virtual size_t used_in_alloc_regions() {
assert(Heap_lock->owner() != NULL,
"Should be owned on this thread's behalf.");
size_t result = 0;
// Read only once in case it is set to NULL concurrently
HeapRegion* hr = mutator_alloc_region(AllocationContext::current())->get();
if (hr != NULL) {
result += hr->used();
}
return result;
}
size_t G1Allocator::unsafe_max_tlab_alloc(AllocationContext_t context) {
// Return the remaining space in the cur alloc region, but not less than
// the min TLAB size.
// Also, this value can be at most the humongous object threshold,
// since we can't allow tlabs to grow big enough to accommodate
// humongous objects.
HeapRegion* hr = mutator_alloc_region(context)->get();
size_t max_tlab = _g1h->max_tlab_size() * wordSize;
if (hr == NULL) {
return max_tlab;
} else {
return MIN2(MAX2(hr->free(), (size_t) MinTLABSize), max_tlab);
}
}
// Do we currently have an active mutator region to allocate into?
bool has_mutator_alloc_region(AllocationContext_t context) { return mutator_alloc_region(context)->get() != NULL; }
