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ACE_Cached_Allocator Class Template Reference

Create a cached memory pool with <n_chunks> chunks each with sizeof (TYPE) size. More...

#include <Malloc_T.h>

Inheritance diagram for ACE_Cached_Allocator:

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Collaboration diagram for ACE_Cached_Allocator:

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List of all members.

Public Methods

 ACE_Cached_Allocator (size_t n_chunks)
 Create a cached memory pool with <n_chunks> chunks each with sizeof (TYPE) size. More...

 ~ACE_Cached_Allocator (void)
 Clear things up. More...

void * malloc (size_t nbytes=sizeof(T))
 Get a chunk of memory from free list cache. More...

virtual void * calloc (size_t nbytes, char initial_value='\0')
 Get a chunk of memory from free list cache, giving them <initial_value>. More...

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<
T >, ACE_LOCK > 
free_list_
 Maintain a cached memory free list. More...


Detailed Description

template<class T, class ACE_LOCK>
class ACE_Cached_Allocator< T, ACE_LOCK >

Create a cached memory pool with <n_chunks> chunks each with sizeof (TYPE) size.

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

See also:
ACE_Cached_Mem_Pool_Node


Constructor & Destructor Documentation

template<class T, class ACE_LOCK>
ACE_Cached_Allocator< T, ACE_LOCK >::ACE_Cached_Allocator size_t    n_chunks
 

Create a cached memory pool with <n_chunks> chunks each with sizeof (TYPE) size.

template<class T, class ACE_LOCK>
ACE_Cached_Allocator< T, ACE_LOCK >::~ACE_Cached_Allocator void   
 

Clear things up.


Member Function Documentation

template<class T, class ACE_LOCK>
ACE_INLINE void * ACE_Cached_Allocator< T, 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 T, class ACE_LOCK>
ACE_INLINE void * ACE_Cached_Allocator< T, 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 <= to sizeof T, and is otherwise ignored since <malloc> always returns a pointer to an item of sizeof (T).

Reimplemented from ACE_New_Allocator.

template<class T, class ACE_LOCK>
ACE_INLINE void ACE_Cached_Allocator< T, ACE_LOCK >::free void *    ptr [virtual]
 

Return a chunk of memory back to free list cache.

Reimplemented from ACE_New_Allocator.

template<class T, class ACE_LOCK>
ACE_INLINE void * ACE_Cached_Allocator< T, ACE_LOCK >::malloc size_t    nbytes = sizeof (T) [virtual]
 

Get a chunk of memory from free list cache.

Note that <nbytes> is only checked to make sure that it's <= to sizeof T, and is otherwise ignored since <malloc> always returns a pointer to an item of sizeof (T).

Reimplemented from ACE_New_Allocator.


Member Data Documentation

template<class T, class ACE_LOCK>
ACE_Locked_Free_List<ACE_Cached_Mem_Pool_Node<T>, ACE_LOCK> ACE_Cached_Allocator::free_list_ [private]
 

Maintain a cached memory free list.

template<class T, class ACE_LOCK>
char* ACE_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:
Generated on Thu May 23 00:16:25 2002 for ACE by doxygen1.2.13.1 written by Dimitri van Heesch, © 1997-2001