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Add better listener support.

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Add some parameters to listener callbacks.
Add alloc and destroy callbacks for listeners.
Add public function for allocating a listener.



git-svn-id: https://origsvn.digium.com/svn/asterisk/team/mmichelson/threadpool@377226 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Michelson
2012-12-04 23:45:39 +00:00
parent 4acb2070f2
commit cc63d2c380
2 changed files with 62 additions and 16 deletions
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44
include/asterisk/threadpool.h
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@@ -25,6 +25,15 @@ struct ast_taskprocessor;
struct ast_threadpool_listener;
struct ast_threadpool_listener_callbacks {
/*!
* \brief Allocate the listener's private data
*
* It is not necessary to assign the private data to the listener.
* \param listener The listener the private data will belong to
* \retval NULL Failure to allocate private data
* \retval non-NULL The newly allocated private data
*/
void *(*alloc)(struct ast_threadpool_listener *listener);
/*!
* \brief Indicates that the state of threads in the pool has changed
*
@@ -32,23 +41,31 @@ struct ast_threadpool_listener_callbacks {
* \param active_threads The number of active threads in the pool
* \param idle_threads The number of idle threads in the pool
*/
void (*state_changed)(struct ast_threadpool_listener *listener,
void (*state_changed)(struct ast_threadpool *pool,
struct ast_threadpool_listener *listener,
int active_threads,
int idle_threads);
/*!
* \brief Indicates that a task was pushed to the threadpool's taskprocessor
* \brief Indicates that a task was pushed to the threadpool
*
* \param listener The threadpool listener
* \param was_empty Indicates whether the taskprocessor was empty prior to adding the task
* \param was_empty Indicates whether there were any tasks prior to adding the new one.
*/
void (*tps_task_pushed)(struct ast_threadpool_listener *listener,
void (*task_pushed)(struct ast_threadpool *pool,
struct ast_threadpool_listener *listener,
int was_empty);
/*!
* \brief Indicates the threadpoo's taskprocessor has become empty
*
* \param listener The threadpool's listener
*/
void (*emptied)(struct ast_threadpool_listener *listener);
void (*emptied)(struct ast_threadpool *pool, struct ast_threadpool_listener *listener);
/*!
* \brief Free the listener's private data
* \param private_data The private data to destroy
*/
void (*destroy)(void *private_data);
};
/*!
@@ -60,13 +77,24 @@ struct ast_threadpool_listener_callbacks {
*/
struct ast_threadpool_listener {
/*! Callbacks called by the threadpool */
struct ast_threadpool_listener_callbacks *callbacks;
/*! Handle to the threadpool */
struct ast_threadpool *threadpool;
const struct ast_threadpool_listener_callbacks *callbacks;
/*! User data for the listener */
void *private_data;
};
/*!
* \brief Allocate a threadpool listener
*
* This function will call back into the alloc callback for the
* listener.
*
* \param callbacks Listener callbacks to assign to the listener
* \retval NULL Failed to allocate the listener
* \retval non-NULL The newly-created threadpool listener
*/
struct ast_threadpool_listener *ast_threadpool_listener_alloc(
const struct ast_threadpool_listener_callbacks *callbacks);
/*!
* \brief Create a new threadpool
*