Allocator.h File Reference

Fast-Allocators. More...

#include <stdlib.h>
#include "ink_queue.h"
#include "ink_defs.h"
#include "ink_resource.h"

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Data Structures
class	Allocator
	Allocator for fixed size memory blocks. More...
class	ClassAllocator< C >
	Allocator for Class objects. More...
class	SparseClassAllocator< C >
	Allocator for space class, a class with a lot of uninitialized space/members. More...
Defines
#define	RND16(_x)   (((_x)+15)&~15)

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Detailed Description

Fast-Allocators.

License

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Provides three classes

• Allocator for allocating memory blocks of fixed size
• ClassAllocator for allocating objects
• SpaceClassAllocator for allocating sparce objects (most members uninitialized)

These class provides a efficient way for handling dynamic allocation. The fast allocator maintains its own freepool of objects from which it doles out object. Allocated objects when freed go back to the free pool.

Note:

Fast allocators could accumulate a lot of objects in the free pool as a result of bursty demand. Memory used by the objects in the free pool never gets freed even if the freelist grows very large.

Definition in file Allocator.h.

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Define Documentation

#define RND16

(

_x

)

(((_x)+15)&~15)

Definition at line 48 of file Allocator.h.

Referenced by ClassAllocator< C >::ClassAllocator().