RFR: JDK-8061259: ParNew promotion failed is serialized on a lock

[Jungwoo Ha]

Apparently, my memory's been swapped out. I meant to use _promotion_failed
field.

diff -r a184ee1d7172
src/share/vm/gc_implementation/parNew/parNewGeneration.cpp
--- a/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp Thu Jan 08
12:08:22 2015 -0800
+++ b/src/share/vm/gc_implementation/parNew/parNewGeneration.cpp Thu Jan 15
09:00:05 2015 -0800
@@ -1194,8 +1194,10 @@
         return real_forwardee(old);
     }

-    new_obj = _next_gen->par_promote(par_scan_state->thread_num(),
-                                       old, m, sz);
+    if (!_promotion_failed) {
+      new_obj = _next_gen->par_promote(par_scan_state->thread_num(),
+                                        old, m, sz);
+    }

     if (new_obj == NULL) {
       // promotion failed, forward to self
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