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# ACE_Dynamic_Cached_Allocator Class Template Reference

A size-based allocator that caches blocks for quicker access. More...

`#include <Malloc_T.h>`

Inheritance diagram for ACE_Dynamic_Cached_Allocator:

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Collaboration diagram for ACE_Dynamic_Cached_Allocator:

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List of all members.

## Public Methods
| ACE_Dynamic_Cached_Allocator (size_t n_chunks, size_t chunk_size)
| Create a cached memory pool with n_chunks chunks each with chunk_size size. More...
| ~ACE_Dynamic_Cached_Allocator (void)
| Clear things up. More...
void * | malloc (size_t nbytes=0)
virtual void * | calloc (size_t nbytes, char initial_value='\0')
virtual void * | calloc (size_t n_elem, size_t elem_size, char initial_value='\0')
| This method is a no-op and just returns 0 since the free list only works with fixed sized entities. More...
void | free (void *)
| Return a chunk of memory back to free list cache. More...
## Private Attributes
char * | pool_
| Remember how we allocate the memory in the first place so we can clear things up later. More...
ACE_Locked_Free_List< ACE_Cached_Mem_Pool_Node< char >, ACE_LOCK > | free_list_
| Maintain a cached memory free list. We use `char` as template parameter, although sizeof(char) is usually less than sizeof(void*). Really important is that chunk_size must be greater or equal to sizeof(void*). More...
size_t | chunk_size_
| Remember the size of our chunks. More...

## Detailed Description

### template<class ACE_LOCK>
class ACE_Dynamic_Cached_Allocator< ACE_LOCK >

A size-based allocator that caches blocks for quicker access.

This class enables caching of dynamically allocated, fixed-size chunks. Notice that the `chunk_size` must be greater than or equal to `sizeof (void*)` for this to work properly.

See also:
  ACE_Cached_Allocator

## Constructor & Destructor Documentation

template<class ACE_LOCK>
ACE_Dynamic_Cached_Allocator< ACE_LOCK >::ACE_Dynamic_Cached_Allocator | ( | size_t | n_chunks,
|  | size_t | chunk_size
| ) |

| Create a cached memory pool with n_chunks chunks each with chunk_size size.

template<class ACE_LOCK>
ACE_Dynamic_Cached_Allocator< ACE_LOCK >::~ACE_Dynamic_Cached_Allocator | ( | void |  | ) |

| Clear things up.

## Member Function Documentation

template<class ACE_LOCK>
ACE_INLINE void * ACE_Dynamic_Cached_Allocator< ACE_LOCK >::calloc | ( | size_t | n_elem,
|  | size_t | elem_size,
|  | char | initial_value = '\0'
| ) | `[virtual]`

| This method is a no-op and just returns 0 since the free list only works with fixed sized entities. Reimplemented from ACE_New_Allocator.

template<class ACE_LOCK>
ACE_INLINE void * ACE_Dynamic_Cached_Allocator< ACE_LOCK >::calloc | ( | size_t | nbytes,
|  | char | initial_value = '\0'
| ) | `[virtual]`

| Get a chunk of memory from free list cache, giving them initial_value. Note that nbytes is only checked to make sure that it's less or equal to chunk_size, and is otherwise ignored since calloc() always returns a pointer to an item of chunk_size. Reimplemented from ACE_New_Allocator.

template<class ACE_LOCK>
ACE_INLINE void ACE_Dynamic_Cached_Allocator< ACE_LOCK >::free | ( | void * | ptr | ) | `[virtual]`

| Return a chunk of memory back to free list cache. Reimplemented from ACE_New_Allocator.

template<class ACE_LOCK>
ACE_INLINE void * ACE_Dynamic_Cached_Allocator< ACE_LOCK >::malloc | ( | size_t | nbytes = 0 | ) | `[virtual]`

| Get a chunk of memory from free list cache. Note that nbytes is only checked to make sure that it's less or equal to chunk_size, and is otherwise ignored since malloc() always returns a pointer to an item of chunk_size size. Reimplemented from ACE_New_Allocator.

## Member Data Documentation

template<class ACE_LOCK>
size_t ACE_Dynamic_Cached_Allocator::chunk_size_`[private]`

| Remember the size of our chunks.

template<class ACE_LOCK>
ACE_Locked_Free_List<ACE_Cached_Mem_Pool_Node<char>, ACE_LOCK> ACE_Dynamic_Cached_Allocator::free_list_`[private]`

| Maintain a cached memory free list. We use `char` as template parameter, although sizeof(char) is usually less than sizeof(void*). Really important is that chunk_size must be greater or equal to sizeof(void*).

template<class ACE_LOCK>
char* ACE_Dynamic_Cached_Allocator::pool_`[private]`

| Remember how we allocate the memory in the first place so we can clear things up later.

The documentation for this class was generated from the following files:

- Malloc_T.h
- Malloc_T.cpp
- Malloc_T.i