A fixed-size allocator that caches items for quicker access. More...
#include <Malloc_T.h>
Public Member Functions | |
| ACE_Cached_Allocator (size_t n_chunks) | |
| ~ACE_Cached_Allocator () | |
| Clear things up. More... | |
| 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. More... | |
| size_t | pool_depth () |
| Return the number of chunks available in the cache. More... | |
 Public Member Functions inherited from ACE_New_Allocator | |
| virtual void * | malloc (size_t nbytes) |
| These methods are defined. More... | |
| virtual void * | calloc (size_t nbytes, char initial_value='\0') |
| Allocate nbytes, giving them initial_value. More... | |
| virtual void * | calloc (size_t n_elem, size_t elem_size, char initial_value='\0') |
| virtual void | free (void *ptr) |
| Free ptr (must have been allocated by ACE_Allocator::malloc()). More... | |
| virtual int | remove () |
| These methods are no-ops. More... | |
| virtual int | bind (const char *name, void *pointer, int duplicates=0) |
| virtual int | trybind (const char *name, void *&pointer) |
| virtual int | find (const char *name, void *&pointer) |
| virtual int | find (const char *name) |
| Returns 0 if the name is in the mapping. -1, otherwise. More... | |
| virtual int | unbind (const char *name) |
| virtual int | unbind (const char *name, void *&pointer) |
| virtual int | sync (ssize_t len=-1, int flags=MS_SYNC) |
| virtual int | sync (void *addr, size_t len, int flags=MS_SYNC) |
| virtual int | protect (ssize_t len=-1, int prot=PROT_RDWR) |
| virtual int | protect (void *addr, size_t len, int prot=PROT_RDWR) |
| virtual void | dump () const |
| Dump the state of the object. More... | |
| Public Member Functions inherited from ACE_Allocator | |
| ACE_Allocator () | |
| "No-op" constructor (needed to make certain compilers happy). More... | |
| virtual | ~ACE_Allocator () |
| Virtual destructor. More... | |
| virtual void * | malloc (size_type nbytes)=0 |
| Allocate nbytes, but don't give them any initial value. More... | |
| virtual void * | calloc (size_type nbytes, char initial_value='\0')=0 |
| Allocate nbytes, giving them initial_value. More... | |
| virtual void * | calloc (size_type n_elem, size_type elem_size, char initial_value='\0')=0 |
| virtual void | free (void *ptr)=0 |
| Free ptr (must have been allocated by ACE_Allocator::malloc()). More... | |
| virtual int | remove ()=0 |
| Remove any resources associated with this memory manager. More... | |
| virtual int | bind (const char *name, void *pointer, int duplicates=0)=0 |
| virtual int | trybind (const char *name, void *&pointer)=0 |
| virtual int | find (const char *name, void *&pointer)=0 |
| virtual int | find (const char *name)=0 |
| Returns 0 if the name is in the mapping. -1, otherwise. More... | |
| virtual int | unbind (const char *name)=0 |
| virtual int | unbind (const char *name, void *&pointer)=0 |
| virtual int | sync (ssize_t len=-1, int flags=MS_SYNC)=0 |
| virtual int | sync (void *addr, size_type len, int flags=MS_SYNC)=0 |
| virtual int | protect (ssize_t len=-1, int prot=PROT_RDWR)=0 |
| virtual int | protect (void *addr, size_type len, int prot=PROT_RDWR)=0 |
| virtual void | dump () const =0 |
| Dump the state of the object. More... | |
Public Attributes | |
| ACE_ALLOC_HOOK_DECLARE | |
Private Attributes | |
| char * | pool_ |
| ACE_Locked_Free_List< ACE_Cached_Mem_Pool_Node< T >, ACE_LOCK > | free_list_ |
| Maintain a cached memory free list. More... | |
Additional Inherited Members | |
| Public Types inherited from ACE_Allocator | |
| typedef size_t | size_type |
| Unsigned integer type used for specifying memory block lengths. More... | |
| Static Public Member Functions inherited from ACE_Allocator | |
| static ACE_Allocator * | instance () |
| Get pointer to a default ACE_Allocator. More... | |
| static ACE_Allocator * | instance (ACE_Allocator *) |
| static void | close_singleton () |
| Delete the dynamically allocated Singleton. More... | |
Detailed Description
class ACE_Cached_Allocator< T, ACE_LOCK >
A fixed-size allocator that caches items for quicker access.
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.
- See also
- ACE_Dynamic_Cached_Allocator
Constructor & Destructor Documentation
◆ ACE_Cached_Allocator()
| 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.
◆ ~ACE_Cached_Allocator()
| ACE_Cached_Allocator< T, ACE_LOCK >::~ACE_Cached_Allocator |
Clear things up.
Member Function Documentation
◆ calloc() [1/2]
|
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.
◆ calloc() [2/2]
|
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.
◆ free()
|
virtual |
Return a chunk of memory back to free list cache.
Reimplemented from ACE_New_Allocator.
◆ malloc()
|
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.
◆ pool_depth()
| class ACE_LOCK inline size_t ACE_Cached_Allocator< T, ACE_LOCK >::pool_depth | ( | ) |
Return the number of chunks available in the cache.
Member Data Documentation
◆ ACE_ALLOC_HOOK_DECLARE
| ACE_Cached_Allocator< T, ACE_LOCK >::ACE_ALLOC_HOOK_DECLARE |
◆ free_list_
|
private |
Maintain a cached memory free list.
◆ 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:
