/*
* Create a new I/O Queue framework.
*/
PJ_DEF(pj_status_t) pj_ioqueue_create( pj_pool_t *pool,
pj_size_t max_fd,
pj_ioqueue_t **p_ioqueue)
{
pj_ioqueue_t *ioq;
pj_lock_t *lock;
pj_status_t rc;
PJ_UNUSED_ARG(max_fd);
ioq = PJ_POOL_ZALLOC_T(pool, pj_ioqueue_t);
/* Create and init ioqueue mutex */
rc = pj_lock_create_null_mutex(pool, "ioq%p", &lock);
if (rc != PJ_SUCCESS)
return rc;
rc = pj_ioqueue_set_lock(ioq, lock, PJ_TRUE);
if (rc != PJ_SUCCESS)
return rc;
PJ_LOG(4, ("pjlib", "select() I/O Queue created (%p)", ioq));
*p_ioqueue = ioq;
return PJ_SUCCESS;
}
/*
* pj_ioqueue_create()
*
* Create select ioqueue.
*/
PJ_DEF(pj_status_t) pj_ioqueue_create( pj_pool_t *pool,
pj_size_t max_fd,
pj_ioqueue_t **p_ioqueue)
{
pj_ioqueue_t *ioqueue;
pj_status_t rc;
pj_lock_t *lock;
int i;
/* Check that arguments are valid. */
PJ_ASSERT_RETURN(pool != NULL && p_ioqueue != NULL &&
max_fd > 0, PJ_EINVAL);
/* Check that size of pj_ioqueue_op_key_t is sufficient */
PJ_ASSERT_RETURN(sizeof(pj_ioqueue_op_key_t)-sizeof(void*) >=
sizeof(union operation_key), PJ_EBUG);
ioqueue = pj_pool_alloc(pool, sizeof(pj_ioqueue_t));
ioqueue_init(ioqueue);
ioqueue->max = max_fd;
ioqueue->count = 0;
pj_list_init(&ioqueue->active_list);
#if PJ_IOQUEUE_HAS_SAFE_UNREG
/* When safe unregistration is used (the default), we pre-create
* all keys and put them in the free list.
*/
/* Mutex to protect key's reference counter
* We don't want to use key's mutex or ioqueue's mutex because
* that would create deadlock situation in some cases.
*/
rc = pj_mutex_create_simple(pool, NULL, &ioqueue->ref_cnt_mutex);
if (rc != PJ_SUCCESS)
return rc;
/* Init key list */
pj_list_init(&ioqueue->free_list);
pj_list_init(&ioqueue->closing_list);
/* Pre-create all keys according to max_fd */
for ( i=0; i<max_fd; ++i) {
pj_ioqueue_key_t *key;
key = PJ_POOL_ALLOC_T(pool, pj_ioqueue_key_t);
key->ref_count = 0;
rc = pj_lock_create_recursive_mutex(pool, NULL, &key->lock);
if (rc != PJ_SUCCESS) {
key = ioqueue->free_list.next;
while (key != &ioqueue->free_list) {
pj_lock_destroy(key->lock);
key = key->next;
}
pj_mutex_destroy(ioqueue->ref_cnt_mutex);
return rc;
}
pj_list_push_back(&ioqueue->free_list, key);
}
#endif
rc = pj_lock_create_simple_mutex(pool, "ioq%p", &lock);
if (rc != PJ_SUCCESS)
return rc;
rc = pj_ioqueue_set_lock(ioqueue, lock, PJ_TRUE);
if (rc != PJ_SUCCESS)
return rc;
ioqueue->epfd = os_epoll_create(max_fd);
if (ioqueue->epfd < 0) {
ioqueue_destroy(ioqueue);
return PJ_RETURN_OS_ERROR(pj_get_native_os_error());
}
/*ioqueue->events = pj_pool_calloc(pool, max_fd, sizeof(struct epoll_event));
PJ_ASSERT_RETURN(ioqueue->events != NULL, PJ_ENOMEM);
ioqueue->queue = pj_pool_calloc(pool, max_fd, sizeof(struct queue));
PJ_ASSERT_RETURN(ioqueue->queue != NULL, PJ_ENOMEM);
*/
PJ_LOG(4, ("pjlib", "epoll I/O Queue created (%p)", ioqueue));
*p_ioqueue = ioqueue;
return PJ_SUCCESS;
}
/*
* pj_ioqueue_create()
*
* Create select ioqueue.
*/
PJ_DEF(pj_status_t) pj_ioqueue_create( pj_pool_t *pool,
pj_size_t max_fd,
pj_ioqueue_t **p_ioqueue)
{
pj_ioqueue_t *ioqueue;
pj_lock_t *lock;
unsigned i;
pj_status_t rc;
/* Check that arguments are valid. */
PJ_ASSERT_RETURN(pool != NULL && p_ioqueue != NULL &&
max_fd > 0 && max_fd <= PJ_IOQUEUE_MAX_HANDLES,
PJ_EINVAL);
/* Check that size of pj_ioqueue_op_key_t is sufficient */
PJ_ASSERT_RETURN(sizeof(pj_ioqueue_op_key_t)-sizeof(void*) >=
sizeof(union operation_key), PJ_EBUG);
/* Create and init common ioqueue stuffs */
ioqueue = PJ_POOL_ALLOC_T(pool, pj_ioqueue_t);
ioqueue_init(ioqueue);
ioqueue->max = max_fd;
ioqueue->count = 0;
PJ_FD_ZERO(&ioqueue->rfdset);
PJ_FD_ZERO(&ioqueue->wfdset);
#if PJ_HAS_TCP
PJ_FD_ZERO(&ioqueue->xfdset);
#endif
pj_list_init(&ioqueue->active_list);
rescan_fdset(ioqueue);
#if PJ_IOQUEUE_HAS_SAFE_UNREG
/* When safe unregistration is used (the default), we pre-create
* all keys and put them in the free list.
*/
/* Mutex to protect key's reference counter
* We don't want to use key's mutex or ioqueue's mutex because
* that would create deadlock situation in some cases.
*/
rc = pj_mutex_create_simple(pool, NULL, &ioqueue->ref_cnt_mutex);
if (rc != PJ_SUCCESS)
return rc;
/* Init key list */
pj_list_init(&ioqueue->free_list);
pj_list_init(&ioqueue->closing_list);
/* Pre-create all keys according to max_fd */
for (i=0; i<max_fd; ++i) {
pj_ioqueue_key_t *key;
key = PJ_POOL_ALLOC_T(pool, pj_ioqueue_key_t);
key->ref_count = 0;
rc = pj_mutex_create_recursive(pool, NULL, &key->mutex);
if (rc != PJ_SUCCESS) {
key = ioqueue->free_list.next;
while (key != &ioqueue->free_list) {
pj_mutex_destroy(key->mutex);
key = key->next;
}
pj_mutex_destroy(ioqueue->ref_cnt_mutex);
return rc;
}
pj_list_push_back(&ioqueue->free_list, key);
}
#endif
/* Create and init ioqueue mutex */
rc = pj_lock_create_simple_mutex(pool, "ioq%p", &lock);
if (rc != PJ_SUCCESS)
return rc;
rc = pj_ioqueue_set_lock(ioqueue, lock, PJ_TRUE);
if (rc != PJ_SUCCESS)
return rc;
PJ_LOG(4, ("pjlib", "select() I/O Queue created (%p)", ioqueue));
*p_ioqueue = ioqueue;
return PJ_SUCCESS;
}