src/share/vm/gc_implementation/g1/concurrentMarkThread.cpp

rev 3900 : 8004816: G1: Kitchensink failures after marking stack changes
Summary: Reset the marking state, including the mark stack overflow flag, in the event of a marking stack overflow during serial reference processing.
Reviewed-by: jmasa

*** 157,173 ****
            CMCheckpointRootsFinalClosure final_cl(_cm);
            sprintf(verbose_str, "GC remark");
            VM_CGC_Operation op(&final_cl, verbose_str, true /* needs_pll */);
            VMThread::execute(&op);
          }
!         if (cm()->restart_for_overflow() &&
!             G1TraceMarkStackOverflow) {
            gclog_or_tty->print_cr("Restarting conc marking because of MS overflow "
                                   "in remark (restart #%d).", iter);
          }
- 
-         if (cm()->restart_for_overflow()) {
            if (G1Log::fine()) {
              gclog_or_tty->date_stamp(PrintGCDateStamps);
              gclog_or_tty->stamp(PrintGCTimeStamps);
              gclog_or_tty->print_cr("[GC concurrent-mark-restart-for-overflow]");
            }
--- 157,171 ----
            CMCheckpointRootsFinalClosure final_cl(_cm);
            sprintf(verbose_str, "GC remark");
            VM_CGC_Operation op(&final_cl, verbose_str, true /* needs_pll */);
            VMThread::execute(&op);
          }
!         if (cm()->restart_for_overflow()) {
!           if (G1TraceMarkStackOverflow) {
              gclog_or_tty->print_cr("Restarting conc marking because of MS overflow "
                                     "in remark (restart #%d).", iter);
            }
            if (G1Log::fine()) {
              gclog_or_tty->date_stamp(PrintGCDateStamps);
              gclog_or_tty->stamp(PrintGCTimeStamps);
              gclog_or_tty->print_cr("[GC concurrent-mark-restart-for-overflow]");
            }