1 files changed, 16 insertions, 95 deletions

diff --git a/sql/sql_class.cc b/sql/sql_class.cc
index 718d2424463..e3884922587 100644
--- a/sql/sql_class.cc
+++ b/sql/sql_class.cc
@@ -519,100 +519,6 @@ extern "C"
 }
 
 
-/**
-  Dumps a text description of a thread, its security context
-  (user, host) and the current query.
-
-  @param thd thread context
-  @param buffer pointer to preferred result buffer
-  @param length length of buffer
-  @param max_query_len how many chars of query to copy (0 for all)
-
-  @return Pointer to string
-*/
-
-extern "C"
-char *thd_get_error_context_description(THD *thd, char *buffer,
-                                        unsigned int length,
-                                        unsigned int max_query_len)
-{
-  String str(buffer, length, &my_charset_latin1);
-  const Security_context *sctx= &thd->main_security_ctx;
-  char header[256];
-  size_t len;
-
-  /*
-    The pointers thd->query and thd->proc_info might change since they are
-    being modified concurrently. This is acceptable for proc_info since its
-    values doesn't have to very accurate and the memory it points to is static,
-    but we need to attempt a snapshot on the pointer values to avoid using NULL
-    values. The pointer to thd->query however, doesn't point to static memory
-    and has to be protected by thd->LOCK_thd_data or risk pointing to
-    uninitialized memory.
-  */
-  const char *proc_info= thd->proc_info;
-
-  len= my_snprintf(header, sizeof(header),
-                   "MySQL thread id %u, OS thread handle %lu, query id %llu",
-                    (uint)thd->thread_id, (ulong) thd->real_id, (ulonglong) thd->query_id);
-  str.length(0);
-  str.append(header, len);
-
-  if (sctx->host)
-  {
-    str.append(' ');
-    str.append(sctx->host);
-  }
-
-  if (sctx->ip)
-  {
-    str.append(' ');
-    str.append(sctx->ip);
-  }
-
-  if (sctx->user)
-  {
-    str.append(' ');
-    str.append(sctx->user);
-  }
-
-  if (proc_info)
-  {
-    str.append(' ');
-    str.append(proc_info);
-  }
-
-  /* Don't wait if LOCK_thd_data is used as this could cause a deadlock */
-  if (!mysql_mutex_trylock(&thd->LOCK_thd_data))
-  {
-    if (thd->query())
-    {
-      if (max_query_len < 1)
-        len= thd->query_length();
-      else
-        len= MY_MIN(thd->query_length(), max_query_len);
-      str.append('\n');
-      str.append(thd->query(), len);
-    }
-    mysql_mutex_unlock(&thd->LOCK_thd_data);
-  }
-
-  if (str.c_ptr_safe() == buffer)
-    return buffer;
-
-  /*
-    We have to copy the new string to the destination buffer because the string
-    was reallocated to a larger buffer to be able to fit.
-  */
-  DBUG_ASSERT(buffer != NULL);
-  length= MY_MIN(str.length(), length-1);
-  memcpy(buffer, str.c_ptr_quick(), length);
-  /* Make sure that the new string is null terminated */
-  buffer[length]= '\0';
-  return buffer;
-}
-
-
 #if MARIA_PLUGIN_INTERFACE_VERSION < 0x0200
 /**
   TODO: This function is for API compatibility, remove it eventually.
@@ -1305,7 +1211,7 @@ void THD::init(bool skip_lock)
   bzero((char *) &org_status_var, sizeof(org_status_var));
   status_in_global= 0;
   start_bytes_received= 0;
-  last_commit_gtid.seq_no= 0;
+  m_last_commit_gtid.seq_no= 0;
   last_stmt= NULL;
   /* Reset status of last insert id */
   arg_of_last_insert_id_function= FALSE;
@@ -7352,6 +7258,21 @@ THD::signal_wakeup_ready()
   mysql_cond_signal(&COND_wakeup_ready);
 }
 
+void THD::set_last_commit_gtid(rpl_gtid &gtid)
+{
+#ifndef EMBEDDED_LIBRARY
+  bool changed_gtid= (m_last_commit_gtid.seq_no != gtid.seq_no);
+#endif
+  m_last_commit_gtid= gtid;
+#ifndef EMBEDDED_LIBRARY
+  if (changed_gtid &&
+      session_tracker.get_tracker(SESSION_SYSVARS_TRACKER)->is_enabled())
+  {
+    session_tracker.get_tracker(SESSION_SYSVARS_TRACKER)->
+      mark_as_changed(this, (LEX_CSTRING*)Sys_last_gtid_ptr);
+ }
+#endif
+}
 
 void
 wait_for_commit::reinit()