introduce `trace_events' info for iseq.

* vm_core.h (rb_iseq_t::aux): add `trace_events` which represents
  which events are enabled on this iseq. With this information,
  we can skip useless trace-on changes for ISeqs.

* vm_trace.c (RUBY_EVENTS_TRACE_BY_ISEQ): moved to iseq.h and rename it
  with ISEQ_TRACE_EVENTS.

* iseq.h: introduce ISEQ_USE_COMPILE_DATA iseq (imemo) flag to represent
  COMPILE_DATA is available. In other words, iseq->aux.trace_events is not
  available when this flag is set.
  * ISEQ_COMPILE_DATA() is changed from a macro.
  * ISEQ_COMPILE_DATA_ALLOC() is added.
  * ISEQ_COMPILE_DATA_CLEAR() is added.

* iseq.c: use them.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60838 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/vm_core.h b/vm_core.h
index 1339007f2a..4292c8facc 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -426,6 +426,8 @@ struct rb_iseq_struct {
 	    VALUE obj;
 	    int index;
 	} loader;
+
+	rb_event_flag_t trace_events;
     } aux;
 };