src/share/vm/runtime/thread.cpp

rev 4466 : 8010463: G1: Crashes with -UseTLAB and heap verification
Summary: Some parts of the G1 heap can only be walked during a safepoint. Skip verifying these parts of the heap when verifying during JVM startup.
Reviewed-by: brutisso, tschatzl

*** 3381,3396 ****
  
    // Any JVMTI raw monitors entered in onload will transition into
    // real raw monitor. VM is setup enough here for raw monitor enter.
    JvmtiExport::transition_pending_onload_raw_monitors();
  
-   if (VerifyBeforeGC &&
-       Universe::heap()->total_collections() >= VerifyGCStartAt) {
-     Universe::heap()->prepare_for_verify();
-     Universe::verify();   // make sure we're starting with a clean slate
-   }
- 
    // Fully start NMT
    MemTracker::start();
  
    // Create the VMThread
    { TraceTime timer("Start VMThread", TraceStartupTime);
--- 3381,3390 ----
*** 3410,3419 ****
--- 3404,3418 ----
        }
      }
    }
  
    assert (Universe::is_fully_initialized(), "not initialized");
+   if (VerifyBeforeGC && VerifyGCStartAt == 0) {
+     Universe::heap()->prepare_for_verify();
+     Universe::verify();   // make sure we're starting with a clean slate
+   }
+ 
    EXCEPTION_MARK;
  
    // At this point, the Universe is initialized, but we have not executed
    // any byte code.  Now is a good time (the only time) to dump out the
    // internal state of the JVM for sharing.