SimpleAllocator

from panda3d.core import SimpleAllocator
class SimpleAllocator

Bases: DTOOL_SUPER_BASE

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__(*args, **kwargs)
alloc()

C++ Interface: alloc(const SimpleAllocator self, int size, int alignment)

/**

  • 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()

C++ Interface: get_contiguous(SimpleAllocator self)

/**

  • 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()

C++ Interface: get_first_block(SimpleAllocator self)

/**

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

  • allocated blocks.

*/

getMaxSize()

C++ Interface: get_max_size(SimpleAllocator self)

/**

  • Returns the available space for allocated objects.

*/

getTotalSize()

C++ Interface: get_total_size(SimpleAllocator self)

/**

  • Returns the total size of allocated objects.

*/

get_contiguous()

C++ Interface: get_contiguous(SimpleAllocator self)

/**

  • 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()

C++ Interface: get_first_block(SimpleAllocator self)

/**

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

  • allocated blocks.

*/

get_max_size()

C++ Interface: get_max_size(SimpleAllocator self)

/**

  • Returns the available space for allocated objects.

*/

get_total_size()

C++ Interface: get_total_size(SimpleAllocator self)

/**

  • Returns the total size of allocated objects.

*/

isEmpty()

C++ Interface: is_empty(SimpleAllocator self)

/**

  • Returns true if there are no blocks allocated on this page, or false if

  • there is at least one.

*/

is_empty()

C++ Interface: is_empty(SimpleAllocator self)

/**

  • Returns true if there are no blocks allocated on this page, or false if

  • there is at least one.

*/

output()

C++ Interface: output(SimpleAllocator self, ostream out)

/**

*/

setMaxSize()

C++ Interface: set_max_size(const SimpleAllocator self, int max_size)

/**

  • 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().

*/

set_max_size()

C++ Interface: set_max_size(const SimpleAllocator self, int max_size)

/**

  • 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()

C++ Interface: write(SimpleAllocator self, ostream out)

/**

*/