Updated thread_pool_priv.h with additional includes for thread pool plugins

include/mysql/thread_pool_priv.h

@@ -18,6 +18,28 @@
 #ifndef THREAD_POOL_PRIV_INCLUDED
 #define THREAD_POOL_PRIV_INCLUDED
 
+/*
+  A thread pool plugins requires inclusion of sql_class.h to get proper
+  access to THD variables and functions.
+  There are some DTrace probes that requires definition inside the plugin,
+  this requires include of probes_mysql.h.
+  scheduler.h contains definitions required by the plugin.
+  A thread pool can also use DEBUG_SYNC and must thus include
+  debug_sync.h
+  To handle definitions of Information Schema plugins it is also required
+  to include sql_profile.h and table.h.
+
+  The goal is to move all dependencies from a thread pool plugin on the
+  MySQL Server into a version-handled plugin API.
+*/
+#define MYSQL_SERVER 1
+#include <sql_class.h>
+#include <probes_mysql.h>
+#include <scheduler.h>
+#include <debug_sync.h>
+#include <sql_profile.h>
+#include <table.h>
+
 /*
   The thread pool must be able to execute commands using the connection
   state in THD object. This is the main objective of the thread pool to