SimpleAllocator

from panda3d.core import SimpleAllocator
class SimpleAllocator

Bases: LinkedListNode

An implementation of a very simple block allocator. This class can allocate ranges of nonnegative integers within a specified upper limit; it uses a simple first-fit algorithm to find the next available space.

Inheritance diagram

Inheritance diagram of SimpleAllocator

__init__(from: SimpleAllocator)

Move constructor.

__init__(max_size: int, lock: Mutex)
alloc(size: int, alignment: int)SimpleAllocatorBlock

Allocates a new block. Returns NULL if a block of the requested size cannot be allocated.

To free the allocated block, call block->free(), or simply delete the block pointer.

getContiguous()int

Returns an upper-bound estimate of the size of the largest contiguous block that may be allocated. It is guaranteed that an attempt to allocate a block larger than this will fail, though it is not guaranteed that an attempt to allocate a block this size or smaller will succeed.

getFirstBlock()SimpleAllocatorBlock

Returns a pointer to the first allocated block, or NULL if there are no allocated blocks.

getMaxSize()int

Returns the available space for allocated objects.

getTotalSize()int

Returns the total size of allocated objects.

isEmpty()bool

Returns true if there are no blocks allocated on this page, or false if there is at least one.

output(out: ostream)None
setMaxSize(max_size: int)None

Changes the available space for allocated objects. This will not affect any already-allocated objects, but will have an effect on future calls to alloc().

write(out: ostream)None