void* AllocatorReserve(DiAllocatorBlock* allocator)
{
if (!allocator)
{
return 0;
}
if (allocator->mFree)
{
DiAllocatorNode* freeNode = allocator->mFree;
void* ptr = (reinterpret_cast<unsigned char*>(freeNode)) + sizeof(DiAllocatorNode);
allocator->mFree = freeNode->mNext;
freeNode->mNext = 0;
return ptr;
}
// Free nodes have been exhausted. Allocate a new larger block
unsigned newCapacity = (allocator->mCapacity + 1) >> 1;
AllocatorReserveBlock(allocator, allocator->mNodeSize, newCapacity);
allocator->mCapacity += newCapacity;
// We should have new free node(s) chained
DiAllocatorNode* freeNode = allocator->mFree;
void* ptr = (reinterpret_cast<unsigned char*>(freeNode)) + sizeof(DiAllocatorNode);
allocator->mFree = freeNode->mNext;
freeNode->mNext = 0;
return ptr;
}
void* AllocatorReserve(AllocatorBlock* allocator)
{
if (!allocator)
return 0;
if (!allocator->free_)
{
// Free nodes have been exhausted. Allocate a new larger block
unsigned newCapacity = (allocator->capacity_ + 1) >> 1;
AllocatorReserveBlock(allocator, allocator->nodeSize_, newCapacity);
allocator->capacity_ += newCapacity;
}
