remove `trace_` prefix insns lazily.

* vm_trace.c (update_global_event_hook): set only when tracing is added.
  If tracing was off (event flags are decreased), then ignore them.
  Next `trace_` prefix instruction will trace off itself (lazy tracing off).

* vm_insnhelper.c (vm_trace): trace-off for when trace is not needed.

* iseq.c (rb_iseq_trace_set): fix trace-off process (it was never off tracing).


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60817 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/iseq.h b/iseq.h
index 78272c07ae..8c8def5e0a 100644
--- a/iseq.h
+++ b/iseq.h
@@ -116,6 +116,7 @@ VALUE rb_iseq_load(VALUE data, VALUE parent, VALUE opt);
 VALUE rb_iseq_parameters(const rb_iseq_t *iseq, int is_proc);
 struct st_table *ruby_insn_make_insn_table(void);
 unsigned int rb_iseq_line_no(const rb_iseq_t *iseq, size_t pos);
+void rb_iseq_trace_set(const rb_iseq_t *iseq, rb_event_flag_t turnon_events);
 void rb_iseq_trace_set_all(rb_event_flag_t turnon_events);
 void rb_iseq_trace_on_all(void);