2 *------------------------------------------------------------------
3 * Copyright (c) 2017 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
21 #include <arpa/inet.h>
25 #include <vpp-api/vapi/vapi_dbg.h>
26 #include <vpp-api/vapi/vapi.h>
27 #include <vpp-api/vapi/vapi_internal.h>
28 #include <vppinfra/types.h>
29 #include <vppinfra/pool.h>
30 #include <vlib/vlib.h>
31 #include <vlibapi/api_common.h>
32 #include <vlibmemory/memory_client.h>
34 #include <vapi/memclnt.api.vapi.h>
36 /* we need to use control pings for some stuff and because we're forced to put
37 * the code in headers, we need a way to be able to grab the ids of these
38 * messages - so declare them here as extern */
39 vapi_msg_id_t vapi_msg_id_control_ping = 0;
40 vapi_msg_id_t vapi_msg_id_control_ping_reply = 0;
42 DEFINE_VAPI_MSG_IDS_MEMCLNT_API_JSON;
43 DEFINE_VAPI_MSG_IDS_VPE_API_JSON;
48 vapi_message_desc_t **msgs;
49 size_t max_len_name_with_crc;
60 static const u32 context_counter_mask = (1 << 31);
64 vapi_error_e (*cb) (vapi_ctx_t ctx, void *callback_ctx, vapi_msg_id_t id,
67 } vapi_generic_cb_with_ctx;
71 vapi_error_e (*cb) (vapi_ctx_t ctx, void *callback_ctx, void *payload);
73 } vapi_event_cb_with_ctx;
78 int requests_size; /* size of the requests array (circular queue) */
79 int requests_start; /* index of first request */
80 int requests_count; /* number of used slots */
83 vapi_generic_cb_with_ctx generic_cb;
84 vapi_event_cb_with_ctx *event_cbs;
85 u16 *vapi_msg_id_t_to_vl_msg_id;
87 vapi_msg_id_t *vl_msg_id_to_vapi_msg_t;
89 bool handle_keepalives;
90 pthread_mutex_t requests_mutex;
94 vapi_gen_req_context (vapi_ctx_t ctx)
96 ++ctx->context_counter;
97 ctx->context_counter %= context_counter_mask;
98 return ctx->context_counter | context_counter_mask;
102 vapi_get_request_count (vapi_ctx_t ctx)
104 return ctx->requests_count;
108 vapi_requests_full (vapi_ctx_t ctx)
110 return (ctx->requests_count == ctx->requests_size);
114 vapi_requests_empty (vapi_ctx_t ctx)
116 return (0 == ctx->requests_count);
120 vapi_requests_end (vapi_ctx_t ctx)
122 return (ctx->requests_start + ctx->requests_count) % ctx->requests_size;
126 vapi_store_request (vapi_ctx_t ctx, u32 context, bool is_dump,
127 vapi_cb_t callback, void *callback_ctx)
129 assert (!vapi_requests_full (ctx));
130 /* if the mutex is not held, bad things will happen */
131 assert (0 != pthread_mutex_trylock (&ctx->requests_mutex));
132 const int requests_end = vapi_requests_end (ctx);
133 vapi_req_t *slot = &ctx->requests[requests_end];
134 slot->is_dump = is_dump;
135 slot->context = context;
136 slot->callback = callback;
137 slot->callback_ctx = callback_ctx;
138 VAPI_DBG ("stored@%d: context:%x (start is @%d)", requests_end, context,
139 ctx->requests_start);
140 ++ctx->requests_count;
141 assert (!vapi_requests_empty (ctx));
145 struct to_be_freed_s;
149 struct to_be_freed_s *next;
152 static struct to_be_freed_s *to_be_freed = NULL;
155 vapi_add_to_be_freed (void *v)
157 struct to_be_freed_s *prev = NULL;
158 struct to_be_freed_s *tmp;
160 while (tmp && tmp->v)
169 tmp = to_be_freed = calloc (1, sizeof (*to_be_freed));
173 tmp = prev->next = calloc (1, sizeof (*to_be_freed));
176 VAPI_DBG ("To be freed %p", v);
181 vapi_trace_free (void *v)
183 struct to_be_freed_s *tmp = to_be_freed;
184 while (tmp && tmp->v != v)
188 if (tmp && tmp->v == v)
190 VAPI_DBG ("Freed %p", v);
195 VAPI_ERR ("Trying to free untracked pointer %p", v);
201 vapi_to_be_freed_validate ()
203 struct to_be_freed_s *tmp = to_be_freed;
208 VAPI_ERR ("Unfreed msg %p!", tmp->v);
217 vapi_msg_alloc (vapi_ctx_t ctx, size_t size)
223 void *rv = vl_msg_api_alloc_or_null (size);
228 vapi_msg_free (vapi_ctx_t ctx, void *msg)
235 vapi_trace_free (msg);
237 vl_msg_api_free (msg);
241 vapi_lookup_vapi_msg_id_t (vapi_ctx_t ctx, u16 vl_msg_id)
243 if (vl_msg_id <= ctx->vl_msg_id_max)
245 return ctx->vl_msg_id_to_vapi_msg_t[vl_msg_id];
247 return VAPI_INVALID_MSG_ID;
251 vapi_ctx_alloc (vapi_ctx_t * result)
253 vapi_ctx_t ctx = calloc (1, sizeof (struct vapi_ctx_s));
258 ctx->context_counter = 0;
259 ctx->vapi_msg_id_t_to_vl_msg_id =
260 malloc (__vapi_metadata.count *
261 sizeof (*ctx->vapi_msg_id_t_to_vl_msg_id));
262 if (!ctx->vapi_msg_id_t_to_vl_msg_id)
266 clib_memset (ctx->vapi_msg_id_t_to_vl_msg_id, ~0,
267 __vapi_metadata.count *
268 sizeof (*ctx->vapi_msg_id_t_to_vl_msg_id));
269 ctx->event_cbs = calloc (__vapi_metadata.count, sizeof (*ctx->event_cbs));
274 pthread_mutex_init (&ctx->requests_mutex, NULL);
283 vapi_ctx_free (vapi_ctx_t ctx)
285 assert (!ctx->connected);
286 free (ctx->requests);
287 free (ctx->vapi_msg_id_t_to_vl_msg_id);
288 free (ctx->event_cbs);
289 free (ctx->vl_msg_id_to_vapi_msg_t);
290 pthread_mutex_destroy (&ctx->requests_mutex);
295 vapi_is_msg_available (vapi_ctx_t ctx, vapi_msg_id_t id)
297 return vapi_lookup_vl_msg_id (ctx, id) != UINT16_MAX;
301 vapi_connect (vapi_ctx_t ctx, const char *name,
302 const char *chroot_prefix,
303 int max_outstanding_requests,
304 int response_queue_size, vapi_mode_e mode,
305 bool handle_keepalives)
307 if (response_queue_size <= 0 || max_outstanding_requests <= 0)
311 if (!clib_mem_get_per_cpu_heap () && !clib_mem_init (0, 1024 * 1024 * 32))
315 ctx->requests_size = max_outstanding_requests;
316 const size_t size = ctx->requests_size * sizeof (*ctx->requests);
317 void *tmp = realloc (ctx->requests, size);
323 clib_memset (ctx->requests, 0, size);
324 /* coverity[MISSING_LOCK] - 177211 requests_mutex is not needed here */
325 ctx->requests_start = ctx->requests_count = 0;
328 VAPI_DBG ("set memory root path `%s'", chroot_prefix);
329 vl_set_memory_root_path ((char *) chroot_prefix);
331 static char api_map[] = "/vpe-api";
332 VAPI_DBG ("client api map `%s'", api_map);
333 if ((vl_client_api_map (api_map)) < 0)
335 return VAPI_EMAP_FAIL;
337 VAPI_DBG ("connect client `%s'", name);
338 if (vl_client_connect ((char *) name, 0, response_queue_size) < 0)
340 vl_client_api_unmap ();
341 return VAPI_ECON_FAIL;
343 #if VAPI_DEBUG_CONNECT
344 VAPI_DBG ("start probing messages");
348 for (i = 0; i < __vapi_metadata.count; ++i)
350 vapi_message_desc_t *m = __vapi_metadata.msgs[i];
351 u8 scratch[m->name_with_crc_len + 1];
352 memcpy (scratch, m->name_with_crc, m->name_with_crc_len + 1);
353 u32 id = vl_msg_api_get_msg_index (scratch);
354 if (VAPI_INVALID_MSG_ID != id)
358 VAPI_ERR ("Returned vl_msg_id `%u' > UINT16MAX `%u'!", id,
363 if (id > ctx->vl_msg_id_max)
365 vapi_msg_id_t *tmp = realloc (ctx->vl_msg_id_to_vapi_msg_t,
367 (*ctx->vl_msg_id_to_vapi_msg_t) *
374 ctx->vl_msg_id_to_vapi_msg_t = tmp;
375 ctx->vl_msg_id_max = id;
377 ctx->vl_msg_id_to_vapi_msg_t[id] = m->id;
378 ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = id;
379 #if VAPI_DEBUG_CONNECT
380 VAPI_DBG ("Message `%s' has vl_msg_id `%u'", m->name_with_crc,
386 ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = UINT16_MAX;
387 VAPI_DBG ("Message `%s' not available", m->name_with_crc);
390 #if VAPI_DEBUG_CONNECT
391 VAPI_DBG ("finished probing messages");
393 if (!vapi_is_msg_available (ctx, vapi_msg_id_control_ping) ||
394 !vapi_is_msg_available (ctx, vapi_msg_id_control_ping_reply))
397 ("control ping or control ping reply not available, cannot connect");
398 rv = VAPI_EINCOMPATIBLE;
402 ctx->connected = true;
403 if (vapi_is_msg_available (ctx, vapi_msg_id_memclnt_keepalive))
405 ctx->handle_keepalives = handle_keepalives;
409 ctx->handle_keepalives = false;
413 vl_client_disconnect ();
414 vl_client_api_unmap ();
419 vapi_disconnect (vapi_ctx_t ctx)
425 vl_client_disconnect ();
426 vl_client_api_unmap ();
428 vapi_to_be_freed_validate ();
430 ctx->connected = false;
435 vapi_get_fd (vapi_ctx_t ctx, int *fd)
441 vapi_send (vapi_ctx_t ctx, void *msg)
443 vapi_error_e rv = VAPI_OK;
444 if (!ctx || !msg || !ctx->connected)
450 svm_queue_t *q = api_main.shmem_hdr->vl_input_queue;
452 unsigned msgid = be16toh (*(u16 *) msg);
453 if (msgid <= ctx->vl_msg_id_max)
455 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
456 if (id < __vapi_metadata.count)
458 VAPI_DBG ("send msg@%p:%u[%s]", msg, msgid,
459 __vapi_metadata.msgs[id]->name);
463 VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
468 VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
471 tmp = svm_queue_add (q, (u8 *) & msg,
472 VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
478 VAPI_DBG ("vapi_send() rv = %d", rv);
483 vapi_send2 (vapi_ctx_t ctx, void *msg1, void *msg2)
485 vapi_error_e rv = VAPI_OK;
486 if (!ctx || !msg1 || !msg2 || !ctx->connected)
491 svm_queue_t *q = api_main.shmem_hdr->vl_input_queue;
493 unsigned msgid1 = be16toh (*(u16 *) msg1);
494 unsigned msgid2 = be16toh (*(u16 *) msg2);
495 const char *name1 = "UNKNOWN";
496 const char *name2 = "UNKNOWN";
497 if (msgid1 <= ctx->vl_msg_id_max)
499 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid1];
500 if (id < __vapi_metadata.count)
502 name1 = __vapi_metadata.msgs[id]->name;
505 if (msgid2 <= ctx->vl_msg_id_max)
507 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid2];
508 if (id < __vapi_metadata.count)
510 name2 = __vapi_metadata.msgs[id]->name;
513 VAPI_DBG ("send two: %u[%s], %u[%s]", msgid1, name1, msgid2, name2);
515 int tmp = svm_queue_add2 (q, (u8 *) & msg1, (u8 *) & msg2,
516 VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
522 VAPI_DBG ("vapi_send() rv = %d", rv);
527 vapi_recv (vapi_ctx_t ctx, void **msg, size_t * msg_size,
528 svm_q_conditional_wait_t cond, u32 time)
530 if (!ctx || !ctx->connected || !msg || !msg_size)
534 vapi_error_e rv = VAPI_OK;
535 api_main_t *am = &api_main;
538 if (am->our_pid == 0)
543 svm_queue_t *q = am->vl_input_queue;
545 VAPI_DBG ("doing shm queue sub");
547 int tmp = svm_queue_sub (q, (u8 *) & data, cond, time);
552 vapi_add_to_be_freed ((void *) data);
555 (msgbuf_t *) ((u8 *) data - offsetof (msgbuf_t, data));
556 if (!msgbuf->data_len)
558 vapi_msg_free (ctx, (u8 *) data);
562 *msg_size = ntohl (msgbuf->data_len);
564 unsigned msgid = be16toh (*(u16 *) * msg);
565 if (msgid <= ctx->vl_msg_id_max)
567 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
568 if (id < __vapi_metadata.count)
570 VAPI_DBG ("recv msg@%p:%u[%s]", *msg, msgid,
571 __vapi_metadata.msgs[id]->name);
575 VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
580 VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
583 if (ctx->handle_keepalives)
585 unsigned msgid = be16toh (*(u16 *) * msg);
587 vapi_lookup_vl_msg_id (ctx, vapi_msg_id_memclnt_keepalive))
589 vapi_msg_memclnt_keepalive_reply *reply = NULL;
592 reply = vapi_msg_alloc (ctx, sizeof (*reply));
595 reply->header.context = vapi_get_client_index (ctx);
596 reply->header._vl_msg_id =
597 vapi_lookup_vl_msg_id (ctx,
598 vapi_msg_id_memclnt_keepalive_reply);
599 reply->payload.retval = 0;
600 vapi_msg_memclnt_keepalive_reply_hton (reply);
601 while (VAPI_EAGAIN == vapi_send (ctx, reply));
602 vapi_msg_free (ctx, *msg);
603 VAPI_DBG ("autohandled memclnt_keepalive");
616 vapi_wait (vapi_ctx_t ctx, vapi_wait_mode_e mode)
622 vapi_dispatch_response (vapi_ctx_t ctx, vapi_msg_id_t id,
623 u32 context, void *msg)
626 if (0 != (mrv = pthread_mutex_lock (&ctx->requests_mutex)))
628 VAPI_DBG ("pthread_mutex_lock() failed, rv=%d:%s", mrv, strerror (mrv));
629 return VAPI_MUTEX_FAILURE;
631 int tmp = ctx->requests_start;
632 const int requests_end = vapi_requests_end (ctx);
633 while (ctx->requests[tmp].context != context && tmp != requests_end)
636 if (tmp == ctx->requests_size)
641 VAPI_DBG ("dispatch, search from %d, %s at %d", ctx->requests_start,
642 ctx->requests[tmp].context == context ? "matched" : "stopped",
644 vapi_error_e rv = VAPI_OK;
645 if (ctx->requests[tmp].context == context)
647 while (ctx->requests_start != tmp)
649 VAPI_ERR ("No response to req with context=%u",
650 (unsigned) ctx->requests[tmp].context);
651 ctx->requests[ctx->requests_start].callback (ctx, ctx->requests
653 requests_start].callback_ctx,
656 clib_memset (&ctx->requests[ctx->requests_start], 0,
657 sizeof (ctx->requests[ctx->requests_start]));
658 ++ctx->requests_start;
659 --ctx->requests_count;
660 if (ctx->requests_start == ctx->requests_size)
662 ctx->requests_start = 0;
665 // now ctx->requests_start == tmp
666 int payload_offset = vapi_get_payload_offset (id);
667 void *payload = ((u8 *) msg) + payload_offset;
669 if (ctx->requests[tmp].is_dump)
671 if (vapi_msg_id_control_ping_reply == id)
680 if (payload_offset != -1)
683 ctx->requests[tmp].callback (ctx, ctx->requests[tmp].callback_ctx,
684 VAPI_OK, is_last, payload);
688 /* this is a message without payload, so bend the callback a little
691 ((vapi_error_e (*)(vapi_ctx_t, void *, vapi_error_e, bool))
692 ctx->requests[tmp].callback) (ctx,
693 ctx->requests[tmp].callback_ctx,
698 clib_memset (&ctx->requests[ctx->requests_start], 0,
699 sizeof (ctx->requests[ctx->requests_start]));
700 ++ctx->requests_start;
701 --ctx->requests_count;
702 if (ctx->requests_start == ctx->requests_size)
704 ctx->requests_start = 0;
707 VAPI_DBG ("after dispatch, req start = %d, end = %d, count = %d",
708 ctx->requests_start, requests_end, ctx->requests_count);
710 if (0 != (mrv = pthread_mutex_unlock (&ctx->requests_mutex)))
712 VAPI_DBG ("pthread_mutex_unlock() failed, rv=%d:%s", mrv,
714 abort (); /* this really shouldn't happen */
720 vapi_dispatch_event (vapi_ctx_t ctx, vapi_msg_id_t id, void *msg)
722 if (ctx->event_cbs[id].cb)
724 return ctx->event_cbs[id].cb (ctx, ctx->event_cbs[id].ctx, msg);
726 else if (ctx->generic_cb.cb)
728 return ctx->generic_cb.cb (ctx, ctx->generic_cb.ctx, id, msg);
733 ("No handler/generic handler for msg id %u[%s], message ignored",
734 (unsigned) id, __vapi_metadata.msgs[id]->name);
740 vapi_msg_is_with_context (vapi_msg_id_t id)
742 assert (id <= __vapi_metadata.count);
743 return __vapi_metadata.msgs[id]->has_context;
747 vapi_dispatch_one (vapi_ctx_t ctx)
749 VAPI_DBG ("vapi_dispatch_one()");
752 vapi_error_e rv = vapi_recv (ctx, &msg, &size, SVM_Q_WAIT, 0);
755 VAPI_DBG ("vapi_recv failed with rv=%d", rv);
758 u16 vpp_id = be16toh (*(u16 *) msg);
759 if (vpp_id > ctx->vl_msg_id_max)
761 VAPI_ERR ("Unknown msg ID received, id `%u', out of range <0,%u>",
762 (unsigned) vpp_id, (unsigned) ctx->vl_msg_id_max);
763 vapi_msg_free (ctx, msg);
766 if (VAPI_INVALID_MSG_ID == (unsigned) ctx->vl_msg_id_to_vapi_msg_t[vpp_id])
768 VAPI_ERR ("Unknown msg ID received, id `%u' marked as not supported",
770 vapi_msg_free (ctx, msg);
773 const vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[vpp_id];
774 const size_t expect_size = vapi_get_message_size (id);
775 if (size < expect_size)
778 ("Invalid msg received, unexpected size `%zu' < expected min `%zu'",
780 vapi_msg_free (ctx, msg);
784 vapi_get_swap_to_host_func (id) (msg);
785 if (vapi_msg_is_with_context (id))
787 context = *(u32 *) (((u8 *) msg) + vapi_get_context_offset (id));
788 /* is this a message originating from VAPI? */
789 VAPI_DBG ("dispatch, context is %x", context);
790 if (context & context_counter_mask)
792 rv = vapi_dispatch_response (ctx, id, context, msg);
796 rv = vapi_dispatch_event (ctx, id, msg);
799 vapi_msg_free (ctx, msg);
804 vapi_dispatch (vapi_ctx_t ctx)
806 vapi_error_e rv = VAPI_OK;
807 while (!vapi_requests_empty (ctx))
809 rv = vapi_dispatch_one (ctx);
819 vapi_set_event_cb (vapi_ctx_t ctx, vapi_msg_id_t id,
820 vapi_event_cb callback, void *callback_ctx)
822 vapi_event_cb_with_ctx *c = &ctx->event_cbs[id];
824 c->ctx = callback_ctx;
828 vapi_clear_event_cb (vapi_ctx_t ctx, vapi_msg_id_t id)
830 vapi_set_event_cb (ctx, id, NULL, NULL);
834 vapi_set_generic_event_cb (vapi_ctx_t ctx, vapi_generic_event_cb callback,
837 ctx->generic_cb.cb = callback;
838 ctx->generic_cb.ctx = callback_ctx;
842 vapi_clear_generic_event_cb (vapi_ctx_t ctx)
844 ctx->generic_cb.cb = NULL;
845 ctx->generic_cb.ctx = NULL;
849 vapi_lookup_vl_msg_id (vapi_ctx_t ctx, vapi_msg_id_t id)
851 assert (id < __vapi_metadata.count);
852 return ctx->vapi_msg_id_t_to_vl_msg_id[id];
856 vapi_get_client_index (vapi_ctx_t ctx)
858 return api_main.my_client_index;
862 vapi_is_nonblocking (vapi_ctx_t ctx)
864 return (VAPI_MODE_NONBLOCKING == ctx->mode);
868 vapi_get_max_request_count (vapi_ctx_t ctx)
870 return ctx->requests_size - 1;
874 vapi_get_payload_offset (vapi_msg_id_t id)
876 assert (id < __vapi_metadata.count);
877 return __vapi_metadata.msgs[id]->payload_offset;
880 void (*vapi_get_swap_to_host_func (vapi_msg_id_t id)) (void *msg)
882 assert (id < __vapi_metadata.count);
883 return __vapi_metadata.msgs[id]->swap_to_host;
886 void (*vapi_get_swap_to_be_func (vapi_msg_id_t id)) (void *msg)
888 assert (id < __vapi_metadata.count);
889 return __vapi_metadata.msgs[id]->swap_to_be;
893 vapi_get_message_size (vapi_msg_id_t id)
895 assert (id < __vapi_metadata.count);
896 return __vapi_metadata.msgs[id]->size;
900 vapi_get_context_offset (vapi_msg_id_t id)
902 assert (id < __vapi_metadata.count);
903 return __vapi_metadata.msgs[id]->context_offset;
907 vapi_register_msg (vapi_message_desc_t * msg)
910 for (i = 0; i < __vapi_metadata.count; ++i)
913 (msg->name_with_crc, __vapi_metadata.msgs[i]->name_with_crc))
915 /* this happens if somebody is linking together several objects while
916 * using the static inline headers, just fill in the already
917 * assigned id here so that all the objects are in sync */
918 msg->id = __vapi_metadata.msgs[i]->id;
922 vapi_msg_id_t id = __vapi_metadata.count;
923 ++__vapi_metadata.count;
924 __vapi_metadata.msgs =
925 realloc (__vapi_metadata.msgs,
926 sizeof (*__vapi_metadata.msgs) * __vapi_metadata.count);
927 __vapi_metadata.msgs[id] = msg;
928 size_t s = strlen (msg->name_with_crc);
929 if (s > __vapi_metadata.max_len_name_with_crc)
931 __vapi_metadata.max_len_name_with_crc = s;
938 vapi_producer_lock (vapi_ctx_t ctx)
941 if (0 != (mrv = pthread_mutex_lock (&ctx->requests_mutex)))
943 VAPI_DBG ("pthread_mutex_lock() failed, rv=%d:%s", mrv, strerror (mrv));
944 (void) mrv; /* avoid warning if the above debug is not enabled */
945 return VAPI_MUTEX_FAILURE;
951 vapi_producer_unlock (vapi_ctx_t ctx)
954 if (0 != (mrv = pthread_mutex_unlock (&ctx->requests_mutex)))
956 VAPI_DBG ("pthread_mutex_unlock() failed, rv=%d:%s", mrv,
958 (void) mrv; /* avoid warning if the above debug is not enabled */
959 return VAPI_MUTEX_FAILURE;
965 vapi_get_message_count ()
967 return __vapi_metadata.count;
971 vapi_get_msg_name (vapi_msg_id_t id)
973 return __vapi_metadata.msgs[id]->name;
977 * fd.io coding-style-patch-verification: ON
980 * eval: (c-set-style "gnu")