From 5455b7e72ef7230b36faa3e004444e5bb80915e1 Mon Sep 17 00:00:00 2001
From: ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 18 Jun 2013 22:04:30 +0000
Subject: * gc.c (RGENGC_CHECK_MODE): add new check mode `3'.   In this mode,
 show all references if there is   a miss-corrected object.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 gc.c | 37 +++++++++++++++++++++++++++++++------
 1 file changed, 31 insertions(+), 6 deletions(-)

(limited to 'gc.c')

diff --git a/gc.c b/gc.c
index 02928af078..55eb33440b 100644
--- a/gc.c
+++ b/gc.c
@@ -121,6 +121,7 @@ static ruby_gc_params_t initial_params = {
  * 0: disable all assertions
  * 1: enable assertions (to debug RGenGC)
  * 2: enable bits check (for debugging)
+ * 3: show all references
  */
 #ifndef RGENGC_CHECK_MODE
 #define RGENGC_CHECK_MODE  0
@@ -3025,13 +3026,27 @@ rgengc_check_shady(rb_objspace_t *objspace, VALUE obj)
     if (RGENGC_CHECK_MODE > 1) {
 	if (objspace->rgengc.interesting_object == obj) {
 	    if (FIXNUM_P(objspace->rgengc.parent_object)) {
-		fprintf(stderr, "rgengc_check_shady: points %p (%s) is pointed at line %d\n",
+		fprintf(stderr, "rgengc_check_shady: !!! %p (%s) is pointed at line %d\n",
 			(void *)obj, obj_type_name(obj), FIX2INT(objspace->rgengc.parent_object));
 	    }
 	    else {
-		fprintf(stderr, "rgengc_check_shady: %p (%s) points %p (%s)\n",
-			(void *)objspace->rgengc.parent_object, obj_type_name(objspace->rgengc.parent_object),
-			(void *)obj, obj_type_name(obj));
+		fprintf(stderr, "rgengc_check_shady: !!! %p (%s) is pointed by %p (%s)\n",
+			(void *)obj, obj_type_name(obj),
+			(void *)objspace->rgengc.parent_object, obj_type_name(objspace->rgengc.parent_object));
+	    }
+	}
+
+	if (RGENGC_CHECK_MODE == 3) {
+	    if (objspace->rgengc.interesting_object) {
+		if (FIXNUM_P(objspace->rgengc.parent_object)) {
+		    fprintf(stderr, "rgengc_check_shady: [line %d] -> %p (%s)\n",
+			    FIX2INT(objspace->rgengc.parent_object), (void *)obj, obj_type_name(obj));
+		}
+		else {
+		    fprintf(stderr, "rgengc_check_shady: %p (%s) -> %p (%s)\n",
+			    (void *)objspace->rgengc.parent_object, obj_type_name(objspace->rgengc.parent_object),
+			    (void *)obj, obj_type_name(obj));
+		}
 	    }
 	}
     }
@@ -3520,8 +3535,7 @@ gc_marks_test(rb_objspace_t *objspace, rb_thread_t *th)
 
 		fprintf(stderr, "gc_marks_test: %p (%s) is living, but not marked && not promoted.\n", p, obj_type_name((VALUE)p));
 		objspace->rgengc.interesting_object = (VALUE)p;
-		gc_marks_test(objspace, th);
-		rb_bug("gc_marks_test (again): %p (%s) is living, but not marked && not promoted.\n", p, obj_type_name((VALUE)p));
+		break;
 	    }
 	    p++;
 	}
@@ -3533,6 +3547,17 @@ gc_marks_test(rb_objspace_t *objspace, rb_thread_t *th)
     free(temp_bitmaps);
 
     objspace->rgengc.during_minor_gc = TRUE;
+
+    if (objspace->rgengc.interesting_object) {
+	fprintf(stderr, "!!! restart minor gc\n");
+	objspace->rgengc.during_minor_gc = TRUE;
+	gc_marks_body(objspace, th);
+	fprintf(stderr, "!!! restart major gc\n");
+	objspace->rgengc.during_minor_gc = FALSE;
+	gc_marks_body(objspace, th);
+	rb_bug("gc_marks_test (again): %p (%s) is living, but not marked && not promoted.\n",
+	       (void *)objspace->rgengc.interesting_object, obj_type_name((VALUE)objspace->rgengc.interesting_object));
+    }
 #endif
 }
 
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