MWL#182: Explain running statements

- Implement new approach to testing (the DBUG_EXECUTE_IF variant)
- add an 'evalp' mysqltest command that is like 'eval' except that
  it prints the original query.
- Fix select_describe() not to change join_tab[i]->type
- More tests

1 files changed, 8 insertions, 0 deletions

diff --git a/sql/my_apc.cc b/sql/my_apc.cc
index 754b7880c42..91559483b1f 100644
--- a/sql/my_apc.cc
+++ b/sql/my_apc.cc
@@ -29,6 +29,10 @@ void Apc_target::init()
   // todo: should use my_pthread_... functions instead?
   DBUG_ASSERT(!enabled);
   (void)pthread_mutex_init(&LOCK_apc_queue, MY_MUTEX_INIT_SLOW);
+
+#ifndef DBUG_OFF
+  n_calls_processed= 0;
+#endif
 }
 
 
@@ -217,6 +221,10 @@ void Apc_target::process_apc_requests()
     request->func(request->func_arg);
     request->what="func called by process_apc_requests";
 
+#ifndef DBUG_OFF
+    n_calls_processed++;
+#endif
+
     pthread_cond_signal(&request->COND_request);
 
     pthread_mutex_unlock(&request->LOCK_request);