hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/vmCMSOperations.cpp

rev 6902 : 8062036: ConcurrentMarkThread::slt may be invoked before ConcurrentMarkThread::makeSurrogateLockerThread causing intermittent crashes
Summary: Suppress gc_alot during VM init, improve error for SLT uninitialized.
Reviewed-by: jmasa, brutisso, tschatzl

*** 48,59 ****
  // Methods in abstract class VM_CMS_Operation
  //////////////////////////////////////////////////////////
  void VM_CMS_Operation::acquire_pending_list_lock() {
    // The caller may block while communicating
    // with the SLT thread in order to acquire/release the PLL.
!   ConcurrentMarkSweepThread::slt()->
!     manipulatePLL(SurrogateLockerThread::acquirePLL);
  }
  
  void VM_CMS_Operation::release_and_notify_pending_list_lock() {
    // The caller may block while communicating
    // with the SLT thread in order to acquire/release the PLL.
--- 48,63 ----
  // Methods in abstract class VM_CMS_Operation
  //////////////////////////////////////////////////////////
  void VM_CMS_Operation::acquire_pending_list_lock() {
    // The caller may block while communicating
    // with the SLT thread in order to acquire/release the PLL.
!   SurrogateLockerThread* slt = ConcurrentMarkSweepThread::slt();
!   if (slt != NULL) {
!     slt->manipulatePLL(SurrogateLockerThread::acquirePLL);
!   } else {
!     SurrogateLockerThread::report_missing_slt();
!   }
  }
  
  void VM_CMS_Operation::release_and_notify_pending_list_lock() {
    // The caller may block while communicating
    // with the SLT thread in order to acquire/release the PLL.