CheckedBoolean CopiedSpace::getFreshBlock(AllocationEffort allocationEffort, CopiedBlock** outBlock)
{
CopiedBlock* block = 0;
if (allocationEffort == AllocationMustSucceed) {
if (HeapBlock* heapBlock = m_heap->blockAllocator().allocate())
block = new (NotNull, heapBlock) CopiedBlock(heapBlock->m_allocation);
else if (!allocateNewBlock(&block)) {
*outBlock = 0;
ASSERT_NOT_REACHED();
return false;
}
} else {
ASSERT(allocationEffort == AllocationCanFail);
if (m_heap->shouldCollect())
m_heap->collect(Heap::DoNotSweep);
if (!getFreshBlock(AllocationMustSucceed, &block)) {
*outBlock = 0;
ASSERT_NOT_REACHED();
return false;
}
}
ASSERT(block);
ASSERT(is8ByteAligned(block->m_offset));
*outBlock = block;
return true;
}
CopiedBlock::CopiedBlock(size_t capacity)
: DoublyLinkedListNode<CopiedBlock>()
, m_capacity(capacity)
, m_remaining(payloadCapacity())
, m_isPinned(false)
, m_isOld(false)
, m_liveBytes(0)
#ifndef NDEBUG
, m_liveObjects(0)
#endif
{
ASSERT(is8ByteAligned(reinterpret_cast<void*>(m_remaining)));
}
