--- /dev/null 2019-02-13 16:01:02.292000000 +0300 +++ new/src/share/vm/jfr/utilities/jfrTime.cpp 2019-02-15 19:03:30.532981872 +0300 @@ -0,0 +1,71 @@ +/* + * 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. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#include "precompiled.hpp" +#include "jfr/utilities/jfrTime.hpp" +#include "runtime/os.hpp" +#if defined(X86) && !defined(ZERO) +#include "rdtsc_x86.hpp" +#endif + +bool JfrTime::_ft_enabled = false; + +bool JfrTime::initialize() { + static bool initialized = false; + if (!initialized) { +#if defined(X86) && !defined(ZERO) + _ft_enabled = Rdtsc::initialize(); +#else + _ft_enabled = false; +#endif + initialized = true; + } + return initialized; +} + +bool JfrTime::is_ft_supported() { +#if defined(X86) && !defined(ZERO) + return Rdtsc::is_supported(); +#else + return false; +#endif +} + + +const void* JfrTime::time_function() { +#if defined(X86) && !defined(ZERO) + return _ft_enabled ? (const void*)Rdtsc::elapsed_counter : (const void*)os::elapsed_counter; +#else + return (const void*)os::elapsed_counter; +#endif +} + +jlong JfrTime::frequency() { +#if defined(X86) && !defined(ZERO) + return _ft_enabled ? Rdtsc::frequency() : os::elapsed_frequency(); +#else + return os::elapsed_frequency(); +#endif +} +