src/share/vm/runtime/thread.cpp

@@ -3675,10 +3675,15 @@
   if (Arguments::has_profile())       FlatProfiler::engage(main_thread, true);
   if (MemProfiling)                   MemProfiler::engage();
   StatSampler::engage();
   if (CheckJNICalls)                  JniPeriodicChecker::engage();
 
+  if (AsyncGCLogging && Arguments::gc_log_filename() != NULL) {
+    PeriodicTask* task = new GCLogFlusher(GCLogFlushInterval, static_cast<gcLogFileStream* >(gclog_or_tty));
+    task->enroll();
+  }
+
   BiasedLocking::init();
 
 #if INCLUDE_RTM_OPT
   RTMLockingCounters::init();
 #endif