#include <Malloc_T.h>
Public Member Functions | |
ACE_Cached_Allocator (size_t n_chunks) | |
~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') |
void | free (void *) |
Return a chunk of memory back to free list cache. | |
size_t | pool_depth (void) |
Return the number of chunks available in the cache. | |
Private Attributes | |
char * | pool_ |
ACE_Locked_Free_List < ACE_Cached_Mem_Pool_Node< T > , ACE_LOCK > | free_list_ |
Maintain a cached memory free list. |
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.
This class can be configured flexibly with different types of ACE_LOCK strategies that support the ACE_Thread_Mutex, ACE_Thread_Semaphore, ACE_Process_Mutex, and ACE_Process_Semaphore constructor API.
ACE_Cached_Allocator< T, ACE_LOCK >::ACE_Cached_Allocator | ( | size_t | n_chunks | ) | [inline] |
Create a cached memory pool with n_chunks chunks each with sizeof (TYPE) size.
ACE_Cached_Allocator< T, ACE_LOCK >::~ACE_Cached_Allocator | ( | void | ) | [inline] |
Clear things up.
void * ACE_Cached_Allocator< T, ACE_LOCK >::calloc | ( | size_t | n_elem, | |
size_t | elem_size, | |||
char | initial_value = '\0' | |||
) | [inline, 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.
void * ACE_Cached_Allocator< T, ACE_LOCK >::calloc | ( | size_t | nbytes, | |
char | initial_value = '\0' | |||
) | [inline, 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 sizeof T, and is otherwise ignored since calloc() always returns a pointer to an item of sizeof (T).
Reimplemented from ACE_New_Allocator.
void ACE_Cached_Allocator< T, ACE_LOCK >::free | ( | void * | ptr | ) | [inline, virtual] |
void * ACE_Cached_Allocator< T, ACE_LOCK >::malloc | ( | size_t | nbytes = sizeof (T) |
) | [inline, 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 sizeof T, and is otherwise ignored since malloc()
always returns a pointer to an item of sizeof (T).
Reimplemented from ACE_New_Allocator.
size_t ACE_Cached_Allocator< T, ACE_LOCK >::pool_depth | ( | void | ) | [inline] |
Return the number of chunks available in the cache.
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.
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.