src/hotspot/cpu/x86/rdtsc_x86.cpp

*** 1,7 ****
  /*
!  * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 60,70 ****
      start = os::elapsed_counter();
      OrderAccess::fence();
      fstart = os::rdtsc();
  
      // use sleep to prevent compiler from optimizing
!     os::sleep(Thread::current(), FT_SLEEP_MILLISECS, true);
  
      end = os::elapsed_counter();
      OrderAccess::fence();
      fend = os::rdtsc();
  
--- 60,70 ----
      start = os::elapsed_counter();
      OrderAccess::fence();
      fstart = os::rdtsc();
  
      // use sleep to prevent compiler from optimizing
!     os::sleep(JavaThread::current(), FT_SLEEP_MILLISECS);
  
      end = os::elapsed_counter();
      OrderAccess::fence();
      fend = os::rdtsc();