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);
226 clib_memset (rv, 0, size);
232 vapi_msg_free (vapi_ctx_t ctx, void *msg)
239 vapi_trace_free (msg);
241 vl_msg_api_free (msg);
245 vapi_lookup_vapi_msg_id_t (vapi_ctx_t ctx, u16 vl_msg_id)
247 if (vl_msg_id <= ctx->vl_msg_id_max)
249 return ctx->vl_msg_id_to_vapi_msg_t[vl_msg_id];
251 return VAPI_INVALID_MSG_ID;
255 vapi_ctx_alloc (vapi_ctx_t * result)
257 vapi_ctx_t ctx = calloc (1, sizeof (struct vapi_ctx_s));
262 ctx->context_counter = 0;
263 ctx->vapi_msg_id_t_to_vl_msg_id =
264 malloc (__vapi_metadata.count *
265 sizeof (*ctx->vapi_msg_id_t_to_vl_msg_id));
266 if (!ctx->vapi_msg_id_t_to_vl_msg_id)
270 clib_memset (ctx->vapi_msg_id_t_to_vl_msg_id, ~0,
271 __vapi_metadata.count *
272 sizeof (*ctx->vapi_msg_id_t_to_vl_msg_id));
273 ctx->event_cbs = calloc (__vapi_metadata.count, sizeof (*ctx->event_cbs));
278 pthread_mutex_init (&ctx->requests_mutex, NULL);
287 vapi_ctx_free (vapi_ctx_t ctx)
289 assert (!ctx->connected);
290 free (ctx->requests);
291 free (ctx->vapi_msg_id_t_to_vl_msg_id);
292 free (ctx->event_cbs);
293 free (ctx->vl_msg_id_to_vapi_msg_t);
294 pthread_mutex_destroy (&ctx->requests_mutex);
299 vapi_is_msg_available (vapi_ctx_t ctx, vapi_msg_id_t id)
301 return vapi_lookup_vl_msg_id (ctx, id) != UINT16_MAX;
305 vapi_connect (vapi_ctx_t ctx, const char *name,
306 const char *chroot_prefix,
307 int max_outstanding_requests,
308 int response_queue_size, vapi_mode_e mode,
309 bool handle_keepalives)
311 if (response_queue_size <= 0 || max_outstanding_requests <= 0)
315 if (!clib_mem_get_per_cpu_heap () && !clib_mem_init (0, 1024 * 1024 * 32))
319 ctx->requests_size = max_outstanding_requests;
320 const size_t size = ctx->requests_size * sizeof (*ctx->requests);
321 void *tmp = realloc (ctx->requests, size);
327 clib_memset (ctx->requests, 0, size);
328 /* coverity[MISSING_LOCK] - 177211 requests_mutex is not needed here */
329 ctx->requests_start = ctx->requests_count = 0;
332 VAPI_DBG ("set memory root path `%s'", chroot_prefix);
333 vl_set_memory_root_path ((char *) chroot_prefix);
335 static char api_map[] = "/vpe-api";
336 VAPI_DBG ("client api map `%s'", api_map);
337 if ((vl_client_api_map (api_map)) < 0)
339 return VAPI_EMAP_FAIL;
341 VAPI_DBG ("connect client `%s'", name);
342 if (vl_client_connect ((char *) name, 0, response_queue_size) < 0)
344 vl_client_api_unmap ();
345 return VAPI_ECON_FAIL;
347 #if VAPI_DEBUG_CONNECT
348 VAPI_DBG ("start probing messages");
352 for (i = 0; i < __vapi_metadata.count; ++i)
354 vapi_message_desc_t *m = __vapi_metadata.msgs[i];
355 u8 scratch[m->name_with_crc_len + 1];
356 memcpy (scratch, m->name_with_crc, m->name_with_crc_len + 1);
357 u32 id = vl_msg_api_get_msg_index (scratch);
358 if (VAPI_INVALID_MSG_ID != id)
362 VAPI_ERR ("Returned vl_msg_id `%u' > UINT16MAX `%u'!", id,
367 if (id > ctx->vl_msg_id_max)
369 vapi_msg_id_t *tmp = realloc (ctx->vl_msg_id_to_vapi_msg_t,
371 (*ctx->vl_msg_id_to_vapi_msg_t) *
378 ctx->vl_msg_id_to_vapi_msg_t = tmp;
379 ctx->vl_msg_id_max = id;
381 ctx->vl_msg_id_to_vapi_msg_t[id] = m->id;
382 ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = id;
383 #if VAPI_DEBUG_CONNECT
384 VAPI_DBG ("Message `%s' has vl_msg_id `%u'", m->name_with_crc,
390 ctx->vapi_msg_id_t_to_vl_msg_id[m->id] = UINT16_MAX;
391 VAPI_DBG ("Message `%s' not available", m->name_with_crc);
394 #if VAPI_DEBUG_CONNECT
395 VAPI_DBG ("finished probing messages");
397 if (!vapi_is_msg_available (ctx, vapi_msg_id_control_ping) ||
398 !vapi_is_msg_available (ctx, vapi_msg_id_control_ping_reply))
401 ("control ping or control ping reply not available, cannot connect");
402 rv = VAPI_EINCOMPATIBLE;
406 ctx->connected = true;
407 if (vapi_is_msg_available (ctx, vapi_msg_id_memclnt_keepalive))
409 ctx->handle_keepalives = handle_keepalives;
413 ctx->handle_keepalives = false;
417 vl_client_disconnect ();
418 vl_client_api_unmap ();
423 vapi_disconnect (vapi_ctx_t ctx)
429 vl_client_disconnect ();
430 vl_client_api_unmap ();
432 vapi_to_be_freed_validate ();
434 ctx->connected = false;
439 vapi_get_fd (vapi_ctx_t ctx, int *fd)
445 vapi_send (vapi_ctx_t ctx, void *msg)
447 vapi_error_e rv = VAPI_OK;
448 if (!ctx || !msg || !ctx->connected)
454 svm_queue_t *q = vlibapi_get_main ()->shmem_hdr->vl_input_queue;
456 unsigned msgid = be16toh (*(u16 *) msg);
457 if (msgid <= ctx->vl_msg_id_max)
459 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
460 if (id < __vapi_metadata.count)
462 VAPI_DBG ("send msg@%p:%u[%s]", msg, msgid,
463 __vapi_metadata.msgs[id]->name);
467 VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
472 VAPI_DBG ("send msg@%p:%u[UNKNOWN]", msg, msgid);
475 tmp = svm_queue_add (q, (u8 *) & msg,
476 VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
482 VL_MSG_API_POISON (msg);
484 VAPI_DBG ("vapi_send() rv = %d", rv);
489 vapi_send2 (vapi_ctx_t ctx, void *msg1, void *msg2)
491 vapi_error_e rv = VAPI_OK;
492 if (!ctx || !msg1 || !msg2 || !ctx->connected)
497 svm_queue_t *q = vlibapi_get_main ()->shmem_hdr->vl_input_queue;
499 unsigned msgid1 = be16toh (*(u16 *) msg1);
500 unsigned msgid2 = be16toh (*(u16 *) msg2);
501 const char *name1 = "UNKNOWN";
502 const char *name2 = "UNKNOWN";
503 if (msgid1 <= ctx->vl_msg_id_max)
505 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid1];
506 if (id < __vapi_metadata.count)
508 name1 = __vapi_metadata.msgs[id]->name;
511 if (msgid2 <= ctx->vl_msg_id_max)
513 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid2];
514 if (id < __vapi_metadata.count)
516 name2 = __vapi_metadata.msgs[id]->name;
519 VAPI_DBG ("send two: %u[%s], %u[%s]", msgid1, name1, msgid2, name2);
521 int tmp = svm_queue_add2 (q, (u8 *) & msg1, (u8 *) & msg2,
522 VAPI_MODE_BLOCKING == ctx->mode ? 0 : 1);
528 VL_MSG_API_POISON (msg1);
530 VAPI_DBG ("vapi_send() rv = %d", rv);
535 vapi_recv (vapi_ctx_t ctx, void **msg, size_t * msg_size,
536 svm_q_conditional_wait_t cond, u32 time)
538 if (!ctx || !ctx->connected || !msg || !msg_size)
542 vapi_error_e rv = VAPI_OK;
543 api_main_t *am = vlibapi_get_main ();
546 if (am->our_pid == 0)
551 svm_queue_t *q = am->vl_input_queue;
553 VAPI_DBG ("doing shm queue sub");
555 int tmp = svm_queue_sub (q, (u8 *) & data, cond, time);
559 VL_MSG_API_UNPOISON ((void *) data);
561 vapi_add_to_be_freed ((void *) data);
564 (msgbuf_t *) ((u8 *) data - offsetof (msgbuf_t, data));
565 if (!msgbuf->data_len)
567 vapi_msg_free (ctx, (u8 *) data);
571 *msg_size = ntohl (msgbuf->data_len);
573 unsigned msgid = be16toh (*(u16 *) * msg);
574 if (msgid <= ctx->vl_msg_id_max)
576 vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[msgid];
577 if (id < __vapi_metadata.count)
579 VAPI_DBG ("recv msg@%p:%u[%s]", *msg, msgid,
580 __vapi_metadata.msgs[id]->name);
584 VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
589 VAPI_DBG ("recv msg@%p:%u[UNKNOWN]", *msg, msgid);
592 if (ctx->handle_keepalives)
594 unsigned msgid = be16toh (*(u16 *) * msg);
596 vapi_lookup_vl_msg_id (ctx, vapi_msg_id_memclnt_keepalive))
598 vapi_msg_memclnt_keepalive_reply *reply = NULL;
601 reply = vapi_msg_alloc (ctx, sizeof (*reply));
604 reply->header.context = vapi_get_client_index (ctx);
605 reply->header._vl_msg_id =
606 vapi_lookup_vl_msg_id (ctx,
607 vapi_msg_id_memclnt_keepalive_reply);
608 reply->payload.retval = 0;
609 vapi_msg_memclnt_keepalive_reply_hton (reply);
610 while (VAPI_EAGAIN == vapi_send (ctx, reply));
611 vapi_msg_free (ctx, *msg);
612 VAPI_DBG ("autohandled memclnt_keepalive");
625 vapi_wait (vapi_ctx_t ctx, vapi_wait_mode_e mode)
631 vapi_dispatch_response (vapi_ctx_t ctx, vapi_msg_id_t id,
632 u32 context, void *msg)
635 if (0 != (mrv = pthread_mutex_lock (&ctx->requests_mutex)))
637 VAPI_DBG ("pthread_mutex_lock() failed, rv=%d:%s", mrv, strerror (mrv));
638 return VAPI_MUTEX_FAILURE;
640 int tmp = ctx->requests_start;
641 const int requests_end = vapi_requests_end (ctx);
642 while (ctx->requests[tmp].context != context && tmp != requests_end)
645 if (tmp == ctx->requests_size)
650 VAPI_DBG ("dispatch, search from %d, %s at %d", ctx->requests_start,
651 ctx->requests[tmp].context == context ? "matched" : "stopped",
653 vapi_error_e rv = VAPI_OK;
654 if (ctx->requests[tmp].context == context)
656 while (ctx->requests_start != tmp)
658 VAPI_ERR ("No response to req with context=%u",
659 (unsigned) ctx->requests[tmp].context);
660 ctx->requests[ctx->requests_start].callback (ctx, ctx->requests
662 requests_start].callback_ctx,
665 clib_memset (&ctx->requests[ctx->requests_start], 0,
666 sizeof (ctx->requests[ctx->requests_start]));
667 ++ctx->requests_start;
668 --ctx->requests_count;
669 if (ctx->requests_start == ctx->requests_size)
671 ctx->requests_start = 0;
674 // now ctx->requests_start == tmp
675 int payload_offset = vapi_get_payload_offset (id);
676 void *payload = ((u8 *) msg) + payload_offset;
678 if (ctx->requests[tmp].is_dump)
680 if (vapi_msg_id_control_ping_reply == id)
689 if (payload_offset != -1)
692 ctx->requests[tmp].callback (ctx, ctx->requests[tmp].callback_ctx,
693 VAPI_OK, is_last, payload);
697 /* this is a message without payload, so bend the callback a little
700 ((vapi_error_e (*)(vapi_ctx_t, void *, vapi_error_e, bool))
701 ctx->requests[tmp].callback) (ctx,
702 ctx->requests[tmp].callback_ctx,
707 clib_memset (&ctx->requests[ctx->requests_start], 0,
708 sizeof (ctx->requests[ctx->requests_start]));
709 ++ctx->requests_start;
710 --ctx->requests_count;
711 if (ctx->requests_start == ctx->requests_size)
713 ctx->requests_start = 0;
716 VAPI_DBG ("after dispatch, req start = %d, end = %d, count = %d",
717 ctx->requests_start, requests_end, ctx->requests_count);
719 if (0 != (mrv = pthread_mutex_unlock (&ctx->requests_mutex)))
721 VAPI_DBG ("pthread_mutex_unlock() failed, rv=%d:%s", mrv,
723 abort (); /* this really shouldn't happen */
729 vapi_dispatch_event (vapi_ctx_t ctx, vapi_msg_id_t id, void *msg)
731 if (ctx->event_cbs[id].cb)
733 return ctx->event_cbs[id].cb (ctx, ctx->event_cbs[id].ctx, msg);
735 else if (ctx->generic_cb.cb)
737 return ctx->generic_cb.cb (ctx, ctx->generic_cb.ctx, id, msg);
742 ("No handler/generic handler for msg id %u[%s], message ignored",
743 (unsigned) id, __vapi_metadata.msgs[id]->name);
749 vapi_msg_is_with_context (vapi_msg_id_t id)
751 assert (id <= __vapi_metadata.count);
752 return __vapi_metadata.msgs[id]->has_context;
756 vapi_dispatch_one (vapi_ctx_t ctx)
758 VAPI_DBG ("vapi_dispatch_one()");
761 vapi_error_e rv = vapi_recv (ctx, &msg, &size, SVM_Q_WAIT, 0);
764 VAPI_DBG ("vapi_recv failed with rv=%d", rv);
767 u16 vpp_id = be16toh (*(u16 *) msg);
768 if (vpp_id > ctx->vl_msg_id_max)
770 VAPI_ERR ("Unknown msg ID received, id `%u', out of range <0,%u>",
771 (unsigned) vpp_id, (unsigned) ctx->vl_msg_id_max);
772 vapi_msg_free (ctx, msg);
775 if (VAPI_INVALID_MSG_ID == (unsigned) ctx->vl_msg_id_to_vapi_msg_t[vpp_id])
777 VAPI_ERR ("Unknown msg ID received, id `%u' marked as not supported",
779 vapi_msg_free (ctx, msg);
782 const vapi_msg_id_t id = ctx->vl_msg_id_to_vapi_msg_t[vpp_id];
783 const size_t expect_size = vapi_get_message_size (id);
784 if (size < expect_size)
787 ("Invalid msg received, unexpected size `%zu' < expected min `%zu'",
789 vapi_msg_free (ctx, msg);
793 vapi_get_swap_to_host_func (id) (msg);
794 if (vapi_msg_is_with_context (id))
796 context = *(u32 *) (((u8 *) msg) + vapi_get_context_offset (id));
797 /* is this a message originating from VAPI? */
798 VAPI_DBG ("dispatch, context is %x", context);
799 if (context & context_counter_mask)
801 rv = vapi_dispatch_response (ctx, id, context, msg);
805 rv = vapi_dispatch_event (ctx, id, msg);
808 vapi_msg_free (ctx, msg);
813 vapi_dispatch (vapi_ctx_t ctx)
815 vapi_error_e rv = VAPI_OK;
816 while (!vapi_requests_empty (ctx))
818 rv = vapi_dispatch_one (ctx);
828 vapi_set_event_cb (vapi_ctx_t ctx, vapi_msg_id_t id,
829 vapi_event_cb callback, void *callback_ctx)
831 vapi_event_cb_with_ctx *c = &ctx->event_cbs[id];
833 c->ctx = callback_ctx;
837 vapi_clear_event_cb (vapi_ctx_t ctx, vapi_msg_id_t id)
839 vapi_set_event_cb (ctx, id, NULL, NULL);
843 vapi_set_generic_event_cb (vapi_ctx_t ctx, vapi_generic_event_cb callback,
846 ctx->generic_cb.cb = callback;
847 ctx->generic_cb.ctx = callback_ctx;
851 vapi_clear_generic_event_cb (vapi_ctx_t ctx)
853 ctx->generic_cb.cb = NULL;
854 ctx->generic_cb.ctx = NULL;
858 vapi_lookup_vl_msg_id (vapi_ctx_t ctx, vapi_msg_id_t id)
860 assert (id < __vapi_metadata.count);
861 return ctx->vapi_msg_id_t_to_vl_msg_id[id];
865 vapi_get_client_index (vapi_ctx_t ctx)
867 return vlibapi_get_main ()->my_client_index;
871 vapi_is_nonblocking (vapi_ctx_t ctx)
873 return (VAPI_MODE_NONBLOCKING == ctx->mode);
877 vapi_get_max_request_count (vapi_ctx_t ctx)
879 return ctx->requests_size - 1;
883 vapi_get_payload_offset (vapi_msg_id_t id)
885 assert (id < __vapi_metadata.count);
886 return __vapi_metadata.msgs[id]->payload_offset;
889 void (*vapi_get_swap_to_host_func (vapi_msg_id_t id)) (void *msg)
891 assert (id < __vapi_metadata.count);
892 return __vapi_metadata.msgs[id]->swap_to_host;
895 void (*vapi_get_swap_to_be_func (vapi_msg_id_t id)) (void *msg)
897 assert (id < __vapi_metadata.count);
898 return __vapi_metadata.msgs[id]->swap_to_be;
902 vapi_get_message_size (vapi_msg_id_t id)
904 assert (id < __vapi_metadata.count);
905 return __vapi_metadata.msgs[id]->size;
909 vapi_get_context_offset (vapi_msg_id_t id)
911 assert (id < __vapi_metadata.count);
912 return __vapi_metadata.msgs[id]->context_offset;
916 vapi_register_msg (vapi_message_desc_t * msg)
919 for (i = 0; i < __vapi_metadata.count; ++i)
922 (msg->name_with_crc, __vapi_metadata.msgs[i]->name_with_crc))
924 /* this happens if somebody is linking together several objects while
925 * using the static inline headers, just fill in the already
926 * assigned id here so that all the objects are in sync */
927 msg->id = __vapi_metadata.msgs[i]->id;
931 vapi_msg_id_t id = __vapi_metadata.count;
932 ++__vapi_metadata.count;
933 __vapi_metadata.msgs =
934 realloc (__vapi_metadata.msgs,
935 sizeof (*__vapi_metadata.msgs) * __vapi_metadata.count);
936 __vapi_metadata.msgs[id] = msg;
937 size_t s = strlen (msg->name_with_crc);
938 if (s > __vapi_metadata.max_len_name_with_crc)
940 __vapi_metadata.max_len_name_with_crc = s;
947 vapi_producer_lock (vapi_ctx_t ctx)
950 if (0 != (mrv = pthread_mutex_lock (&ctx->requests_mutex)))
952 VAPI_DBG ("pthread_mutex_lock() failed, rv=%d:%s", mrv, strerror (mrv));
953 (void) mrv; /* avoid warning if the above debug is not enabled */
954 return VAPI_MUTEX_FAILURE;
960 vapi_producer_unlock (vapi_ctx_t ctx)
963 if (0 != (mrv = pthread_mutex_unlock (&ctx->requests_mutex)))
965 VAPI_DBG ("pthread_mutex_unlock() failed, rv=%d:%s", mrv,
967 (void) mrv; /* avoid warning if the above debug is not enabled */
968 return VAPI_MUTEX_FAILURE;
974 vapi_get_message_count ()
976 return __vapi_metadata.count;
980 vapi_get_msg_name (vapi_msg_id_t id)
982 return __vapi_metadata.msgs[id]->name;
986 * fd.io coding-style-patch-verification: ON
989 * eval: (c-set-style "gnu")