/*

 * Copyright (c) 2014, 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.

 *

 * 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 "memory/allocation.hpp"

class BoolObjectClosure;

class ObjectSampler;

class OopClosure;

class JavaThread;

class Thread;

class LeakProfiler : public AllStatic {

  friend class ClassUnloadTypeSet;

  friend class EmitEventOperation;

  friend class ObjectSampleCheckpoint;

  friend class StartOperation;

  friend class StopOperation;

  friend class TypeSet;

  friend class WriteObjectSampleStacktrace;

 private:

  static ObjectSampler* _object_sampler;

  static void set_object_sampler(ObjectSampler* object_sampler);

  static ObjectSampler* object_sampler();

  static void suspend();

  static void resume();

  static bool is_suspended();

 public:

  static bool start(jint sample_count);

  static bool stop();

  static void emit_events(jlong cutoff_ticks, bool emit_all);

  static bool is_running();

  static void sample(HeapWord* object, size_t size, JavaThread* thread);

  // Called by GC

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

};