Add Thread.ignore_deadlock accessor

Setting this to true disables the deadlock detector.  It should
only be used in cases where the deadlock could be broken via some
external means, such as via a signal.

Now that $SAFE is no longer used, replace the safe_level_ VM flag
with ignore_deadlock for storing the setting.

Fixes [Bug #13768]

1 files changed, 1 insertions, 1 deletions

diff --git a/vm_core.h b/vm_core.h
index 8525bfcf3e..02e777fb06 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -595,7 +595,7 @@ typedef struct rb_vm_struct {
     unsigned int running: 1;
     unsigned int thread_abort_on_exception: 1;
     unsigned int thread_report_on_exception: 1;
-    unsigned int safe_level_: 1;
+    unsigned int thread_ignore_deadlock: 1;
 
     /* object management */
     VALUE mark_object_ary;