public void StackAllocatorWorks()
{
AllocatorManager.Initialize();
var origin = AllocatorManager.Persistent;
var backingStorage = origin.AllocateBlock(default(byte), 100000); // allocate a block of bytes from Malloc.Persistent
var allocator = new AllocatorManager.StackAllocator(backingStorage);
const int kLength = 100;
for (int i = 1; i < kLength; ++i)
{
var block = allocator.AllocateBlock(default(int), i);
Assert.AreNotEqual(IntPtr.Zero, block.Range.Pointer);
Assert.AreEqual(i, block.Range.Items);
Assert.AreEqual(UnsafeUtility.SizeOf <int>(), block.BytesPerItem);
Assert.AreEqual(UnsafeUtility.AlignOf <int>(), block.Alignment);
allocator.FreeBlock(ref block);
}
allocator.Dispose();
backingStorage.Dispose();
AllocatorManager.Shutdown();
}
public unsafe void ReleasingChildAllocatorsWorks()
{
AllocatorManager.Initialize();
var origin = AllocatorManager.Persistent;
var parentStorage = origin.AllocateBlock(default(byte), 100000); // allocate a block of bytes from Malloc.Persistent
var parent = new AllocatorManager.StackAllocator(parentStorage); // and make a stack allocator from it
var childStorage = parent.AllocateBlock(default(byte), 10000); // allocate some space from the parent
var child = new AllocatorManager.StackAllocator(childStorage); // and make a stack allocator from it
parent.Dispose(); // tear down the parent allocator
Assert.Throws <ArgumentException>(() =>
{
child.Allocate(default(byte), 1000); // try to allocate from the child - it should fail.
});
parentStorage.Dispose();
AllocatorManager.Shutdown();
}