Panda3D
|
An implementation of a very simple block allocator. More...
#include <pandadoc.hpp>
Public Member Functions | |
__init__ (int max_size, Mutex lock) | |
__init__ (SimpleAllocator from) | |
Move constructor. More... | |
SimpleAllocatorBlock | alloc (int size, int alignment) |
Allocates a new block. More... | |
int | getContiguous () |
Returns an upper-bound estimate of the size of the largest contiguous block that may be allocated. More... | |
SimpleAllocatorBlock | getFirstBlock () |
Returns a pointer to the first allocated block, or NULL if there are no allocated blocks. More... | |
int | getMaxSize () |
Returns the available space for allocated objects. More... | |
int | getTotalSize () |
Returns the total size of allocated objects. More... | |
bool | isEmpty () |
Returns true if there are no blocks allocated on this page, or false if there is at least one. More... | |
output (Ostream out) | |
setMaxSize (int max_size) | |
Changes the available space for allocated objects. More... | |
write (Ostream out) | |
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.
__init__ | ( | int | max_size, |
Mutex | lock | ||
) |
__init__ | ( | SimpleAllocator | from | ) |
Move constructor.
SimpleAllocatorBlock alloc | ( | 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.
int getContiguous | ( | ) |
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.
SimpleAllocatorBlock getFirstBlock | ( | ) |
Returns a pointer to the first allocated block, or NULL if there are no allocated blocks.
int getMaxSize | ( | ) |
Returns the available space for allocated objects.
int getTotalSize | ( | ) |
Returns the total size of allocated objects.
bool isEmpty | ( | ) |
Returns true if there are no blocks allocated on this page, or false if there is at least one.
output | ( | Ostream | out | ) |
setMaxSize | ( | 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 | ( | Ostream | out | ) |