k0kubun	2019-04-06 23:42:02 +0900 (Sat, 06 Apr 2019)

  New Revision: 67460

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=67460

  Log:
    Add debug counter for VM <-> MJIT calls

  Modified files:
    trunk/debug_counter.h
    trunk/mjit.h
Index: mjit.h
===================================================================
--- mjit.h	(revision 67459)
+++ mjit.h	(revision 67460)
@@ -110,6 +110,11 @@ mjit_exec(rb_execution_context_t *ec) https://github.com/ruby/ruby/blob/trunk/mjit.h#L110
 
     func = body->jit_func;
     if (UNLIKELY((uintptr_t)func <= (uintptr_t)LAST_JIT_ISEQ_FUNC)) {
+#     ifdef MJIT_HEADER
+        RB_DEBUG_COUNTER_INC(mjit_frame_JT2VM);
+#     else
+        RB_DEBUG_COUNTER_INC(mjit_frame_VM2VM);
+#     endif
         switch ((enum rb_mjit_iseq_func)func) {
           case NOT_ADDED_JIT_ISEQ_FUNC:
             RB_DEBUG_COUNTER_INC(mjit_exec_not_added);
@@ -132,6 +137,11 @@ mjit_exec(rb_execution_context_t *ec) https://github.com/ruby/ruby/blob/trunk/mjit.h#L137
         }
     }
 
+#   ifdef MJIT_HEADER
+      RB_DEBUG_COUNTER_INC(mjit_frame_JT2JT);
+#   else
+      RB_DEBUG_COUNTER_INC(mjit_frame_VM2JT);
+#   endif
     RB_DEBUG_COUNTER_INC(mjit_exec_call_func);
     return func(ec, ec->cfp);
 }
Index: debug_counter.h
===================================================================
--- debug_counter.h	(revision 67459)
+++ debug_counter.h	(revision 67460)
@@ -263,6 +263,12 @@ RB_DEBUG_COUNTER(mjit_exec_not_ready) https://github.com/ruby/ruby/blob/trunk/debug_counter.h#L263
 RB_DEBUG_COUNTER(mjit_exec_not_compiled)
 RB_DEBUG_COUNTER(mjit_exec_call_func)
 
+/* MJIT <-> VM frame push counts */
+RB_DEBUG_COUNTER(mjit_frame_VM2VM)
+RB_DEBUG_COUNTER(mjit_frame_VM2JT)
+RB_DEBUG_COUNTER(mjit_frame_JT2JT)
+RB_DEBUG_COUNTER(mjit_frame_JT2VM)
+
 /* MJIT cancel counters */
 RB_DEBUG_COUNTER(mjit_cancel)
 RB_DEBUG_COUNTER(mjit_cancel_ivar)

--
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