/*

 * Copyright (c) 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.

 *

 */

#ifndef SHARE_VM_JFR_JFR_HPP

#define SHARE_VM_JFR_JFR_HPP

#include "jni.h"

#include "memory/allocation.hpp"

class BoolObjectClosure;

class JavaThread;

class OopClosure;

class Thread;

extern "C" void JNICALL jfr_register_natives(JNIEnv*, jclass);

//

// The VM interface to Flight Recorder.

//

class Jfr : AllStatic {

 public:

  static bool is_enabled();

  static bool is_disabled();

  static bool is_recording();

  static void on_vm_init();

  static void on_vm_start();

  static void on_unloading_classes();

  static void on_thread_exit(JavaThread* thread);

  static void on_thread_destruct(Thread* thread);

  static void on_vm_shutdown(bool exception_handler = false);

  static bool on_start_flight_recording_option(const JavaVMOption** option, char* tail);

  static bool on_flight_recorder_option(const JavaVMOption** option, char* tail);

  static void weak_oops_do(BoolObjectClosure* is_alive, OopClosure* f);

  static Thread* sampler_thread();

};

#endif // SHARE_VM_JFR_JFR_HPP