/*

 * Copyright (c) 2014, 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

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 */

#ifndef SHARE_VM_LEAKPROFILER_STARTOPERATION_HPP

#define SHARE_VM_LEAKPROFILER_STARTOPERATION_HPP

#include "jfr/recorder/jfrRecorder.hpp"

#include "jfr/leakprofiler/leakProfiler.hpp"

#include "jfr/leakprofiler/sampling/objectSampler.hpp"

#include "jfr/recorder/service/jfrOptionSet.hpp"

#include "logging/log.hpp"

#include "runtime/vm_operations.hpp"

// Safepoint operation for starting leak profiler object sampler

class StartOperation : public VM_Operation {

 private:

  jlong _sample_count;

 public:

  StartOperation(jlong sample_count) :

    _sample_count(sample_count) {

  }

  Mode evaluation_mode() const {

    return _safepoint;

  }

  VMOp_Type type() const {

    return VMOp_GC_HeapInspection;

  }

  virtual void doit() {

    assert(!LeakProfiler::is_running(), "invariant");

    jint queue_size = JfrOptionSet::old_object_queue_size();

    LeakProfiler::set_object_sampler(new ObjectSampler(queue_size));

    log_trace(jfr, system)( "Object sampling started");

  }

};

#endif // SHARE_VM_LEAKPROFILER_STARTOPERATION_HPP