src/hotspot/share/runtime/vmThread.cpp

rev 59757 : Add whitebox support for deflating idle monitors including ObjectSynchronizer::request_deflate_idle_monitors(); drop ObjectSynchronizer::_is_special_deflation_requested flag, functions and uses; switch to ObjectSynchronizer::request_deflate_idle_monitors() as needed; _last_async_deflation_time_ns should be set at the end of async deflation;

*** 283,297 ****
      xtty->end_elem();
      assert(should_terminate(), "termination flag must be set");
    }
  
    if (AsyncDeflateIdleMonitors && log_is_enabled(Info, monitorinflation)) {
!     // AsyncDeflateIdleMonitors does a special deflation at the final
!     // safepoint in order to reduce the in-use monitor population that
!     // is reported by ObjectSynchronizer::log_in_use_monitor_details()
!     // at VM exit.
!     ObjectSynchronizer::set_is_special_deflation_requested(true);
    }
  
    // 4526887 let VM thread exit at Safepoint
    _cur_vm_operation = &halt_op;
    SafepointSynchronize::begin();
--- 283,296 ----
      xtty->end_elem();
      assert(should_terminate(), "termination flag must be set");
    }
  
    if (AsyncDeflateIdleMonitors && log_is_enabled(Info, monitorinflation)) {
!     // AsyncDeflateIdleMonitors does a special deflation in order
!     // to reduce the in-use monitor population that is reported by
!     // ObjectSynchronizer::log_in_use_monitor_details() at VM exit.
!     ObjectSynchronizer::request_deflate_idle_monitors();
    }
  
    // 4526887 let VM thread exit at Safepoint
    _cur_vm_operation = &halt_op;
    SafepointSynchronize::begin();