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ACE_Cached_Allocator Class Template Reference

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

#include <Malloc_T.h>

Inheritance 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 poll with <n_chunks> chunks each with sizeof (TYPE) size.

 ~ACE_Cached_Allocator (void)
 clear things up.

void* malloc (size_t nbytes = sizeof (T))
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.

void free (void *)
 Return a chunk of memory back to free list cache.


Private Attributes

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

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


Detailed Description

template<class T, class ACE_LOCK> template class ACE_Cached_Allocator

Create a cached memory poll 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<classT, classACE_LOCK>
ACE_Cached_Allocator<T, ACE_LOCK>::ACE_Cached_Allocator<T, ACE_LOCK> ( size_t n_chunks ) [inline]
 

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

template<classT, classACE_LOCK>
ACE_Cached_Allocator<T, ACE_LOCK>::~ACE_Cached_Allocator<T, ACE_LOCK> ( void )
 

clear things up.


Member Function Documentation

template<classT, classACE_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<classT, classACE_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<classT, classACE_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<classT, classACE_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<classT, classACE_LOCK>
ACE_Locked_Free_List< ACE_Cached_Mem_Pool_Node< T >,ACE_LOCK > ACE_Cached_Allocator<T, ACE_LOCK>::free_list_ [private]
 

Maintain a cached memory free list.

template<classT, classACE_LOCK>
char * ACE_Cached_Allocator<T, ACE_LOCK>::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 at Sat Dec 1 11:01:12 2001 for ACE by doxygen1.2.3 written by Dimitri van Heesch, © 1997-2000