vm_trace.c: MJIT-limited thread-safety for postponed_job

[Bug #15316]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66001 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 0 deletions

diff --git a/mjit.c b/mjit.c
index 7c8eb28481..cb84d3cd32 100644
--- a/mjit.c
+++ b/mjit.c
@@ -106,6 +106,20 @@ mjit_gc_finish_hook(void)
     CRITICAL_SECTION_FINISH(4, "mjit_gc_finish_hook");
 }
 
+/* Wrap critical section to prevent [Bug #15316] */
+void
+mjit_postponed_job_register_start_hook(void)
+{
+    CRITICAL_SECTION_START(4, "mjit_postponed_job_register_start_hook");
+}
+
+/* Unwrap critical section of mjit_postponed_job_register_start_hook() */
+void
+mjit_postponed_job_register_finish_hook(void)
+{
+    CRITICAL_SECTION_FINISH(4, "mjit_postponed_job_register_finish_hook");
+}
+
 /* Iseqs can be garbage collected.  This function should call when it
    happens.  It removes iseq from the unit.  */
 void