https://git.ruby-lang.org/ruby.git/commit/?id=12866b0d31

From 12866b0d31755dc045d7c5fce0a61572a41891c7 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@g...>
Date: Fri, 27 Nov 2020 21:52:22 -0800
Subject: Log when JIT compaction is skipped due to ISeq GC


diff --git a/mjit_worker.c b/mjit_worker.c
index ff03a1a..c708f01 100644
--- a/mjit_worker.c
+++ b/mjit_worker.c
@@ -910,7 +910,10 @@ compile_compact_jit_code(char* c_file) https://github.com/ruby/ruby/blob/trunk/mjit_worker.c#L910
     bool iseq_gced = false;
     struct rb_mjit_unit *child_unit = 0;
     list_for_each(&active_units.head, child_unit, unode) {
-        if (child_unit->iseq == NULL) iseq_gced = true;
+        if (child_unit->iseq == NULL) {
+            iseq_gced = true;
+            verbose(1, "JIT compaction: A method for JIT code u%d is obsoleted. Compaction will be skipped.", child_unit->id);
+        }
     }
     in_jit = !iseq_gced;
     CRITICAL_SECTION_FINISH(3, "before mjit_compile to wait GC finish");
-- 
cgit v0.10.2


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