-int
-vl_client_connect (char *name, int ctx_quota, int input_queue_size)
-{
- svm_region_t *svm;
- vl_api_memclnt_create_t *mp;
- vl_api_memclnt_create_reply_t *rp;
- unix_shared_memory_queue_t *vl_input_queue;
- vl_shmem_hdr_t *shmem_hdr;
- int rv = 0;
- void *oldheap;
- api_main_t *am = &api_main;
-
- if (am->my_registration)
- {
- clib_warning ("client %s already connected...", name);
- return -1;
- }
-
- if (am->vlib_rp == 0)
- {
- clib_warning ("am->vlib_rp NULL");
- return -1;
- }
-
- svm = am->vlib_rp;
- shmem_hdr = am->shmem_hdr;
-
- if (shmem_hdr == 0 || shmem_hdr->vl_input_queue == 0)
- {
- clib_warning ("shmem_hdr / input queue NULL");
- return -1;
- }
-
- pthread_mutex_lock (&svm->mutex);
- oldheap = svm_push_data_heap (svm);
- vl_input_queue =
- unix_shared_memory_queue_init (input_queue_size, sizeof (uword),
- getpid (), 0);
- pthread_mutex_unlock (&svm->mutex);
- svm_pop_heap (oldheap);
-
- am->my_client_index = ~0;
- am->my_registration = 0;
- am->vl_input_queue = vl_input_queue;
-
- mp = vl_msg_api_alloc (sizeof (vl_api_memclnt_create_t));
- memset (mp, 0, sizeof (*mp));
- mp->_vl_msg_id = ntohs (VL_API_MEMCLNT_CREATE);
- mp->ctx_quota = ctx_quota;
- mp->input_queue = (uword) vl_input_queue;
- strncpy ((char *) mp->name, name, sizeof (mp->name) - 1);
-
- vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) & mp);
-
- while (1)
- {
- int qstatus;
- struct timespec ts, tsrem;
- int i;
-
- /* Wait up to 10 seconds */
- for (i = 0; i < 1000; i++)
- {
- qstatus = unix_shared_memory_queue_sub (vl_input_queue, (u8 *) & rp,
- 1 /* nowait */ );
- if (qstatus == 0)
- goto read_one_msg;
- ts.tv_sec = 0;
- ts.tv_nsec = 10000 * 1000; /* 10 ms */
- while (nanosleep (&ts, &tsrem) < 0)
- ts = tsrem;
- }
- /* Timeout... */
- clib_warning ("memclnt_create_reply timeout");
- return -1;
-
- read_one_msg:
- if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_CREATE_REPLY)
- {
- clib_warning ("unexpected reply: id %d", ntohs (rp->_vl_msg_id));
- continue;
- }
- rv = clib_net_to_host_u32 (rp->response);
-
- vl_msg_api_handler ((void *) rp);
- break;
- }
- return (rv);
-}
-
-static void
-vl_api_memclnt_delete_reply_t_handler (vl_api_memclnt_delete_reply_t * mp)
-{
- void *oldheap;
- api_main_t *am = &api_main;
-
- pthread_mutex_lock (&am->vlib_rp->mutex);
- oldheap = svm_push_data_heap (am->vlib_rp);
- unix_shared_memory_queue_free (am->vl_input_queue);
- pthread_mutex_unlock (&am->vlib_rp->mutex);
- svm_pop_heap (oldheap);
-
- am->my_client_index = ~0;
- am->my_registration = 0;
- am->vl_input_queue = 0;
-}
-
-void
-vl_client_disconnect (void)
-{
- vl_api_memclnt_delete_t *mp;
- vl_api_memclnt_delete_reply_t *rp;
- unix_shared_memory_queue_t *vl_input_queue;
- vl_shmem_hdr_t *shmem_hdr;
- time_t begin;
- api_main_t *am = &api_main;
-
- ASSERT (am->vlib_rp);
- shmem_hdr = am->shmem_hdr;
- ASSERT (shmem_hdr && shmem_hdr->vl_input_queue);
-
- vl_input_queue = am->vl_input_queue;
-
- mp = vl_msg_api_alloc (sizeof (vl_api_memclnt_delete_t));
- memset (mp, 0, sizeof (*mp));
- mp->_vl_msg_id = ntohs (VL_API_MEMCLNT_DELETE);
- mp->index = am->my_client_index;
- mp->handle = (uword) am->my_registration;
-
- vl_msg_api_send_shmem (shmem_hdr->vl_input_queue, (u8 *) & mp);
-
- /*
- * Have to be careful here, in case the client is disconnecting
- * because e.g. the vlib process died, or is unresponsive.
- */
-
- begin = time (0);
- while (1)
- {
- time_t now;
-
- now = time (0);
-
- if (now >= (begin + 2))
- {
- clib_warning ("peer unresponsive, give up");
- am->my_client_index = ~0;
- am->my_registration = 0;
- am->shmem_hdr = 0;
- break;
- }
- if (unix_shared_memory_queue_sub (vl_input_queue, (u8 *) & rp, 1) < 0)
- continue;
-
- /* drain the queue */
- if (ntohs (rp->_vl_msg_id) != VL_API_MEMCLNT_DELETE_REPLY)
- {
- vl_msg_api_handler ((void *) rp);
- continue;
- }
- vl_msg_api_handler ((void *) rp);
- break;
- }
-}
-