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Resource List Routines
[APR Utility Functions]

Typedefs
typedef apr_reslist_t	apr_reslist_t
typedef apr_status_t(*	apr_reslist_constructor )(void **resource, void *params, apr_pool_t *pool)
typedef apr_status_t(*	apr_reslist_destructor )(void *resource, void *params, apr_pool_t *pool)
Functions
apr_status_t	apr_reslist_create (apr_reslist_t **reslist, int min, int smax, int hmax, apr_interval_time_t ttl, apr_reslist_constructor con, apr_reslist_destructor de, void *params, apr_pool_t *pool)
apr_status_t	apr_reslist_destroy (apr_reslist_t *reslist)
apr_status_t	apr_reslist_acquire (apr_reslist_t *reslist, void **resource)
apr_status_t	apr_reslist_release (apr_reslist_t *reslist, void *resource)

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Typedef Documentation

typedef struct apr_reslist_t apr_reslist_t

Opaque resource list object

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Function Documentation

apr_status_t apr_reslist_acquire (  apr_reslist_t *    reslist, void **    resource )

Retrieve a resource from the list, creating a new one if necessary. If we have met our maximum number of resources, we will block until one becomes available.

apr_status_t apr_reslist_create (  apr_reslist_t **    reslist, int    min, int    smax, int    hmax, apr_interval_time_t    ttl, apr_reslist_constructor    con, apr_reslist_destructor    de, void *    params, apr_pool_t *    pool )

Create a new resource list with the following parameters: Parameters: reslist  An address where the pointer to the new resource list will be stored. pool  The pool to use for local storage and management min  Allowed minimum number of available resources. Zero creates new resources only when needed. smax  Resources will be destroyed to meet this maximum restriction as they expire. hmax  Absolute maximum limit on the number of total resources. ttl  If non-zero, sets the maximum amount of time a resource may be available while exceeding the soft limit. con  Constructor routine that is called to create a new resource. de  Destructor routine that is called to destroy an expired resource. params  Passed to constructor and deconstructor pool  The pool from which to create this resoure list. Also the same pool that is passed to the constructor and destructor routines.

apr_status_t apr_reslist_destroy (  apr_reslist_t *    reslist )

Destroy the given resource list and all resources controlled by this list. FIXME: Should this block until all resources become available, or maybe just destroy all the free ones, or maybe destroy them even though they might be in use by something else? Parameters: reslist  The reslist to destroy

apr_status_t apr_reslist_release (  apr_reslist_t *    reslist, void *    resource )

Return a resource back to the list of available resources.

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