SimpleAllocator

from panda3d.core import SimpleAllocator

class SimpleAllocator

Bases:

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

__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.

get_contiguous() → 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.

get_first_block() → SimpleAllocatorBlock

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

get_max_size() → int

Returns the available space for allocated objects.

get_total_size() → int

Returns the total size of allocated objects.

is_empty() → bool

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

output(out: ostream)

set_max_size(max_size: int)

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)