view src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp @ 10185:d50cc62e94ff

8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime. Reviewed-by: twisti, johnc Contributed-by: Martin Doerr <martin.doerr@sap.com>
author johnc
date Wed, 24 Apr 2013 14:48:43 -0700
parents f95d63e2154a
children 8f07aa079343
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/*
 * Copyright (c) 2007, 2010, 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_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP
#define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP

#include "memory/collectorPolicy.hpp"

class ConcurrentMarkSweepPolicy : public TwoGenerationCollectorPolicy {
 protected:
  void initialize_generations();

 public:
  ConcurrentMarkSweepPolicy();

  ConcurrentMarkSweepPolicy* as_concurrent_mark_sweep_policy() { return this; }

  void initialize_gc_policy_counters();

  virtual void initialize_size_policy(size_t init_eden_size,
                                      size_t init_promo_size,
                                      size_t init_survivor_size);

  // Returns true if the incremental mode is enabled.
  virtual bool has_soft_ended_eden();
};

class ASConcurrentMarkSweepPolicy : public ConcurrentMarkSweepPolicy {
 public:

  // Initialize the jstat counters.  This method requires a
  // size policy.  The size policy is expected to be created
  // after the generations are fully initialized so the
  // initialization of the counters need to be done post
  // the initialization of the generations.
  void initialize_gc_policy_counters();

  virtual CollectorPolicy::Name kind() {
    return CollectorPolicy::ASConcurrentMarkSweepPolicyKind;
  }
};

#endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP