thread: Add show threads api

Change-Id: I3124238ab4d43bcef5590bad33a4ff0b5d8b7d15
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>

1 files changed, 65 insertions, 1 deletions

diff --git a/src/vpp/api/api.c b/src/vpp/api/api.c
index d69b84fd0b9..86865099532 100644
--- a/src/vpp/api/api.c
+++ b/src/vpp/api/api.c
@@ -2,7 +2,7 @@
  *------------------------------------------------------------------
  * api.c - message handler registration
  *
- * Copyright (c) 2010-2016 Cisco and/or its affiliates.
+ * Copyright (c) 2010-2018 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
@@ -80,6 +80,7 @@ _(CLI_INBAND, cli_inband)						\
 _(GET_NODE_INDEX, get_node_index)                                       \
 _(ADD_NODE_NEXT, add_node_next)						\
 _(SHOW_VERSION, show_version)						\
+_(SHOW_THREADS, show_threads)						\
 _(GET_NODE_GRAPH, get_node_graph)                                       \
 _(GET_NEXT_INDEX, get_next_index)                                       \
 
@@ -255,6 +256,69 @@ vl_api_show_version_t_handler (vl_api_show_version_t * mp)
 }
 
 static void
+get_thread_data (vl_api_thread_data_t * td, int index)
+{
+  vlib_worker_thread_t *w = vlib_worker_threads + index;
+  td->id = htonl (index);
+  if (w->name)
+    strncpy ((char *) td->name, (char *) w->name, ARRAY_LEN (td->name) - 1);
+  if (w->registration)
+    strncpy ((char *) td->type, (char *) w->registration->name,
+	     ARRAY_LEN (td->type) - 1);
+  td->pid = htonl (w->lwp);
+  td->cpu_id = htonl (w->cpu_id);
+  td->core = htonl (w->core_id);
+  td->cpu_socket = htonl (w->socket_id);
+}
+
+static void
+vl_api_show_threads_t_handler (vl_api_show_threads_t * mp)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  int rv = 0, count = 0;
+
+#if !defined(__powerpc64__)
+  vl_api_registration_t *reg;
+  vl_api_show_threads_reply_t *rmp;
+  vl_api_thread_data_t *td;
+  int i, msg_size = 0;
+  count = vec_len (vlib_worker_threads);
+  if (!count)
+    return;
+
+  msg_size = sizeof (*rmp) + sizeof (rmp->thread_data[0]) * count;
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  rmp = vl_msg_api_alloc (msg_size);
+  memset (rmp, 0, msg_size);
+  rmp->_vl_msg_id = htons (VL_API_SHOW_THREADS_REPLY);
+  rmp->context = mp->context;
+  rmp->count = htonl (count);
+  td = rmp->thread_data;
+
+  for (i = 0; i < count; i++)
+    {
+      get_thread_data (&td[i], i);
+    }
+
+  vl_api_send_msg (reg, (u8 *) rmp);
+#else
+
+  /* unimplemented support */
+  rv = -9;
+  clib_warning ("power pc does not support show threads api");
+  /* *INDENT-OFF* */
+  REPLY_MACRO2(VL_API_SHOW_THREADS_REPLY,
+  ({
+    rmp->count = htonl(count);
+  }));
+  /* *INDENT-ON* */
+#endif
+}
+
+static void
 vl_api_get_node_index_t_handler (vl_api_get_node_index_t * mp)
 {
   vlib_main_t *vm = vlib_get_main ();