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products/sources/formale Sprachen/Java/Openjdk/src/hotspot/share/gc/shared/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 2 kB

Quelle gcConfiguration.hpp Sprache: C

/*
* Copyright (c) 2012, 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.
*
*/

#ifndef SHARE_GC_SHARED_GCCONFIGURATION_HPP
#define SHARE_GC_SHARED_GCCONFIGURATION_HPP

#include "gc/shared/gcName.hpp"
#include "oops/compressedOops.hpp"
#include "utilities/globalDefinitions.hpp"

class GCConfiguration {
public:
  GCName young_collector() const;
  GCName old_collector() const;
  uint num_parallel_gc_threads() const;
  uint num_concurrent_gc_threads() const;
  bool uses_dynamic_gc_threads() const;
  bool is_explicit_gc_concurrent() const;
  bool is_explicit_gc_disabled() const;
  uintx gc_time_ratio() const;

  bool has_pause_target_default_value() const;
  uintx pause_target() const;
};

class GCTLABConfiguration {
public:
  bool uses_tlabs() const;
  size_t min_tlab_size() const;
  uint tlab_refill_waste_limit() const;
};

class GCSurvivorConfiguration {
public:
  intx initial_tenuring_threshold() const;
  intx max_tenuring_threshold() const;
};

class GCHeapConfiguration {
public:
  size_t max_size() const;
  size_t min_size() const;
  size_t initial_size() const;
  bool uses_compressed_oops() const;
  CompressedOops::Mode narrow_oop_mode() const;
  uint object_alignment_in_bytes() const;
  int heap_address_size_in_bits() const;
};

class GCYoungGenerationConfiguration {
public:
  bool has_max_size_default_value() const;
  uintx max_size() const;

  uintx min_size() const;
  intx new_ratio() const;
};

#endif // SHARE_GC_SHARED_GCCONFIGURATION_HPP

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