mjit.c: disable calling JIT-ed code

when TracePoint is enabled. We're cancelling JIT-ed code execution AFTER
each instruction, but there is no guard before the first insn of method.

To prevent spoiling performance, I don't want to modify the JIT-ed code
to fix this. So this commit replaces `mjit_enabled` check with `mjit_call_p`
check.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63734 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/vm_trace.c b/vm_trace.c
index 10ee1ca18e..fabb15be2f 100644
--- a/vm_trace.c
+++ b/vm_trace.c
@@ -25,6 +25,7 @@
 #include "ruby/debug.h"
 
 #include "vm_core.h"
+#include "mjit.h"
 #include "iseq.h"
 #include "eval_intern.h"
 
@@ -68,6 +69,9 @@ update_global_event_hook(rb_event_flag_t vm_events)
     rb_event_flag_t enabled_iseq_events = ruby_vm_event_enabled_flags & ISEQ_TRACE_EVENTS;
 
     if (new_iseq_events & ~enabled_iseq_events) {
+        /* Stop calling all JIT-ed code. Compiling trace insns is not supported for now. */
+        mjit_call_p = FALSE;
+
 	/* write all ISeqs iff new events are added */
 	rb_iseq_trace_set_all(new_iseq_events | enabled_iseq_events);
     }