#include <Containers_T.h>
Inheritance diagram for ACE_Double_Linked_List:
Public Types | |
typedef ACE_Double_Linked_List_Iterator< T > | ITERATOR |
typedef ACE_Double_Linked_List_Reverse_Iterator< T > | REVERSE_ITERATOR |
Public Methods | |
ACE_Double_Linked_List (ACE_Allocator *alloc=0) | |
Initialize an empy list using the allocation strategy specified by the user. More... | |
ACE_Double_Linked_List (const ACE_Double_Linked_List< T > &) | |
Create a double linked list that is a copy of the provided parameter. More... | |
void | operator= (const ACE_Double_Linked_List< T > &) |
Perform a deep copy of the provided list by first deleting the nodes of the lhs and then copying the nodes of the rhs. More... | |
~ACE_Double_Linked_List (void) | |
Clean up the memory allocated for the nodes of the list. More... | |
int | is_empty (void) const |
Performs constant time check to determine if the list is empty. More... | |
int | is_full (void) const |
Since the list is unbounded, the method simply returns 0. More... | |
T * | insert_tail (T *new_item) |
Provides constant time insertion at the end of the list structure. More... | |
T * | insert_head (T *new_item) |
Provides constant time insertion at the head of the list. More... | |
T * | delete_head (void) |
Removes and returns the first <item> in the list. More... | |
T * | delete_tail (void) |
Removes and returns the last <item> in the list. More... | |
void | reset (void) |
Reset the <ACE_Double_Linked_List> to be empty. More... | |
int | get (T *&item, size_t slot=0) |
Iterates through the list to the desired index and assigns the provides pointer with the address of the node occupying that index. More... | |
size_t | size (void) const |
Constant time call to return the current size of the list. More... | |
void | dump (void) const |
Dump the state of an object. More... | |
int | remove (T *n) |
Constant time removal of an item from the list using it's address. More... | |
Public Attributes | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. More... | |
Protected Methods | |
void | delete_nodes (void) |
Removes and deallocates memory for all of the list nodes. More... | |
void | copy_nodes (const ACE_Double_Linked_List< T > &rhs) |
Copy the elements of the provided list by allocated new nodes and assigning them with the proper data. More... | |
void | init_head (void) |
Initialize the head pointer so that the list has a dummy node. More... | |
int | insert_element (T *new_item, int before=0, T *old_item=0) |
Insert a <new_element> into the list. More... | |
int | remove_element (T *item) |
Remove an <item> from the list. More... | |
Protected Attributes | |
T * | head_ |
Head of the circular double-linked list. More... | |
size_t | size_ |
Size of this list. More... | |
ACE_Allocator * | allocator_ |
Allocation Strategy of the queue. More... | |
Friends | |
class | ACE_Double_Linked_List_Iterator_Base< T > |
class | ACE_Double_Linked_List_Iterator< T > |
class | ACE_Double_Linked_List_Reverse_Iterator< T > |
This implementation of an unbounded double-linked list uses a circular linked list with a dummy node. It is pretty much like the <ACE_Unbounded_Queue> except that it allows removing of a specific element from a specific location. Notice that this class is an implementation of a very simple data structure. This is *NOT* a container class. You can use the class to implement other contains classes but it is *NOT* a general purpose container class. The parameter class *MUST* have members T* prev and T* next and users of this class are responsible to follow the general rules of using double-linked lists to maintaining the list integrity. If you need a double linked container class, use the DLList class which is a container but delegates to the Double_Linked_List class.
Requirements and Performance Characteristics
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Initialize an empy list using the allocation strategy specified by the user. If none is specified, then use default allocation strategy. |
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Create a double linked list that is a copy of the provided parameter.
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Clean up the memory allocated for the nodes of the list.
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Copy the elements of the provided list by allocated new nodes and assigning them with the proper data.
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Removes and returns the first <item> in the list. Returns internal node's address on success, 0 if the queue was empty. This method will *not* free the internal node. Reimplemented in ACE_DLList. |
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Removes and deallocates memory for all of the list nodes.
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Removes and returns the last <item> in the list. Returns internal nodes's address on success, 0 if the queue was empty. This method will *not* free the internal node. Reimplemented in ACE_DLList. |
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Dump the state of an object.
Reimplemented in ACE_DLList. |
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Iterates through the list to the desired index and assigns the provides pointer with the address of the node occupying that index.
Reimplemented in ACE_DLList. |
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Initialize the head pointer so that the list has a dummy node.
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Insert a <new_element> into the list. It will be added before or after <old_item>. Default is to insert the new item *after* <head_>. Return 0 if succeed, -1 if error occured. |
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Provides constant time insertion at the head of the list.
Reimplemented in ACE_DLList. |
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Provides constant time insertion at the end of the list structure.
Reimplemented in ACE_DLList. |
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Performs constant time check to determine if the list is empty.
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Since the list is unbounded, the method simply returns 0.
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Perform a deep copy of the provided list by first deleting the nodes of the lhs and then copying the nodes of the rhs.
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Constant time removal of an item from the list using it's address.
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Remove an <item> from the list. Return 0 if succeed, -1 otherwise. Notice that this function checks if item is <head_> and either its <next_> or <prev_> is NULL. The function resets item's <next_> and <prev_> to 0 to prevent clobbering the double-linked list if a user tries to remove the same node again. |
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Reset the <ACE_Double_Linked_List> to be empty. Notice that since no one is interested in the items within, This operation will delete all items. |
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Constant time call to return the current size of the list.
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Reimplemented in ACE_DLList. |
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Declare the dynamic allocation hooks.
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Allocation Strategy of the queue.
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Head of the circular double-linked list.
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Size of this list.
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