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Commiting bugfix 5310. added functions to astobj

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for queue like structure. astobj_container_link_end
astobj_container_link_start 
astobj_conatiner_unlink_start


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7867 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matt O'Gorman
2006-01-08 17:24:54 +00:00
parent 940c49390c
commit 82a74beed4
1 changed files with 70 additions and 0 deletions
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70
include/asterisk/astobj.h
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@@ -571,6 +571,76 @@ extern "C" {
found; \
})
/*! \brief Add an object to the end of a container.
*
* \param container A pointer to the container to operate on.
* \param newobj A pointer to the object to be added.
*
* This macro adds an object to the end of a container.
*/
#define ASTOBJ_CONTAINER_LINK_END(container,newobj) \
do { \
typeof((container)->head) iterator; \
typeof((container)->head) next; \
typeof((container)->head) prev; \
ASTOBJ_CONTAINER_RDLOCK(container); \
prev = NULL; \
next = (container)->head; \
while((iterator = next)) { \
next = iterator->next[0]; \
prev = iterator; \
} \
if(prev) { \
ASTOBJ_CONTAINER_WRLOCK((container)); \
prev->next[0] = ASTOBJ_REF(newobj); \
(newobj)->next[0] = NULL; \
ASTOBJ_CONTAINER_UNLOCK((container)); \
} else { \
ASTOBJ_CONTAINER_LINK_START((container),(newobj)); \
} \
ASTOBJ_CONTAINER_UNLOCK((container)); \
} while(0)
/*! \brief Add an object to the front of a container.
*
* \param container A pointer to the container to operate on.
* \param newobj A pointer to the object to be added.
*
* This macro adds an object to the start of a container.
*/
#define ASTOBJ_CONTAINER_LINK_START(container,newobj) \
do { \
ASTOBJ_CONTAINER_WRLOCK(container); \
(newobj)->next[0] = (container)->head; \
(container)->head = ASTOBJ_REF(newobj); \
ASTOBJ_CONTAINER_UNLOCK(container); \
} while(0)
/*! \brief Remove an object from the front of a container.
*
* \param container A pointer to the container to operate on.
*
* This macro removes the first object in a container.
*
* \note This macro does not destroy any objects, it simply unlinks
* them from the list. No destructors are called.
*
* \return The container's reference to the removed object or NULL if no
* matching object was found.
*/
#define ASTOBJ_CONTAINER_UNLINK_START(container) \
({ \
typeof((container)->head) found = NULL; \
ASTOBJ_CONTAINER_WRLOCK(container); \
if((container)->head) { \
found = (container)->head; \
(container)->head = (container)->head->next[0]; \
found->next[0] = NULL; \
} \
ASTOBJ_CONTAINER_UNLOCK(container); \
found; \
})
/*! \brief Prune marked objects from a container.
*
* \param container A pointer to the container to prune.