src/share/vm/services/runtimeService.cpp

rev 6868 : 8059216: Make PrintGCApplicationStoppedTime print information about stopping threads
Reviewed-by: dholmes, brutisso

*** 44,53 ****
--- 44,54 ----
  PerfCounter*  RuntimeService::_safepoint_time_ticks = NULL;
  PerfCounter*  RuntimeService::_application_time_ticks = NULL;
  PerfCounter*  RuntimeService::_thread_interrupt_signaled_count = NULL;
  PerfCounter*  RuntimeService::_interrupted_before_count = NULL;
  PerfCounter*  RuntimeService::_interrupted_during_count = NULL;
+ double RuntimeService::_last_safepoint_sync_time_sec = 0.0;
  
  void RuntimeService::init() {
    // Make sure the VM version is initialized
    Abstract_VM_Version::initialize();
  
*** 126,135 ****
--- 127,137 ----
                                  last_application_time_sec());
    }
  
    // update the time stamp to begin recording safepoint time
    _safepoint_timer.update();
+   _last_safepoint_sync_time_sec = 0.0;
    if (UsePerfData) {
      _total_safepoints->inc();
      if (_app_timer.is_updated()) {
        _application_time_ticks->inc(_app_timer.ticks_since_update());
      }
*** 138,147 ****
--- 140,152 ----
  
  void RuntimeService::record_safepoint_synchronized() {
    if (UsePerfData) {
      _sync_time_ticks->inc(_safepoint_timer.ticks_since_update());
    }
+   if (PrintGCApplicationStoppedTime) {
+     _last_safepoint_sync_time_sec = last_safepoint_time_sec();
+   }
  }
  
  void RuntimeService::record_safepoint_end() {
  #ifndef USDT2
    HS_DTRACE_PROBE(hs_private, safepoint__end);
*** 153,164 ****
    // during the current safepoint operation.
    if (PrintGCApplicationStoppedTime) {
      gclog_or_tty->date_stamp(PrintGCDateStamps);
      gclog_or_tty->stamp(PrintGCTimeStamps);
      gclog_or_tty->print_cr("Total time for which application threads "
!                            "were stopped: %3.7f seconds",
!                            last_safepoint_time_sec());
    }
  
    // update the time stamp to begin recording app time
    _app_timer.update();
    if (UsePerfData) {
--- 158,171 ----
    // during the current safepoint operation.
    if (PrintGCApplicationStoppedTime) {
      gclog_or_tty->date_stamp(PrintGCDateStamps);
      gclog_or_tty->stamp(PrintGCTimeStamps);
      gclog_or_tty->print_cr("Total time for which application threads "
!                            "were stopped: %3.7f seconds, "
!                            "Stopping threads took: %3.7f seconds",
!                            last_safepoint_time_sec(),
!                            _last_safepoint_sync_time_sec);
    }
  
    // update the time stamp to begin recording app time
    _app_timer.update();
    if (UsePerfData) {