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Datei: zStackWatermark.hpp Sprache: C

/*
* Copyright (c) 2020, 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_GC_Z_ZSTACKWATERMARK_HPP
#define SHARE_GC_Z_ZSTACKWATERMARK_HPP

#include "gc/shared/barrierSet.hpp"
#include "gc/shared/barrierSetNMethod.hpp"
#include "gc/shared/threadLocalAllocBuffer.hpp"
#include "gc/z/zBarrier.hpp"
#include "memory/allocation.hpp"
#include "memory/iterator.hpp"
#include "oops/oopsHierarchy.hpp"
#include "runtime/stackWatermark.hpp"
#include "utilities/globalDefinitions.hpp"

class frame;
class JavaThread;

class ZOnStackCodeBlobClosure : public CodeBlobClosure {
private:
  BarrierSetNMethod* _bs_nm;

  virtual void do_code_blob(CodeBlob* cb);

public:
  ZOnStackCodeBlobClosure();
};

class ZStackWatermark : public StackWatermark {
private:
  ZLoadBarrierOopClosure  _jt_cl;
  ZOnStackCodeBlobClosure _cb_cl;
  ThreadLocalAllocStats   _stats;

  OopClosure* closure_from_context(void* context);

  virtual uint32_t epoch_id() const;
  virtual void start_processing_impl(void* context);
  virtual void process(const frame& fr, RegisterMap& register_map, void* context);

public:
  ZStackWatermark(JavaThread* jt);

  ThreadLocalAllocStats& stats();
};

#endif // SHARE_GC_Z_ZSTACKWATERMARK_HPP

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