hotspot/src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.hpp
author tonyp
Thu, 22 Jul 2010 10:27:41 -0400
changeset 6248 2e661807cef0
parent 5547 f4b087cbb361
child 7397 5b173b4ca846
permissions -rw-r--r--
6962589: remove breadth first scanning code from parallel gc Summary: Remove the breadth-first copying order from ParallelScavenge and use depth-first by default. Reviewed-by: jcoomes, ysr, johnc
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/*
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 * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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class VM_ParallelGCFailedAllocation: public VM_GC_Operation {
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 private:
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  size_t    _size;
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  bool      _is_tlab;
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  HeapWord* _result;
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 public:
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  VM_ParallelGCFailedAllocation(size_t size, bool is_tlab,
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                                unsigned int gc_count);
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  virtual VMOp_Type type() const {
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    return VMOp_ParallelGCFailedAllocation;
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  }
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  virtual void doit();
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  HeapWord* result() const       { return _result; }
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};
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class VM_ParallelGCFailedPermanentAllocation: public VM_GC_Operation {
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private:
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  size_t    _size;
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  HeapWord* _result;
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  VM_ParallelGCFailedPermanentAllocation(size_t size,
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                                         unsigned int gc_count,
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                                         unsigned int full_gc_count);
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  virtual VMOp_Type type() const {
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    return VMOp_ParallelGCFailedPermanentAllocation;
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  }
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  virtual void doit();
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  HeapWord* result() const       { return _result; }
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};
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class VM_ParallelGCSystemGC: public VM_GC_Operation {
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 public:
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  VM_ParallelGCSystemGC(unsigned int gc_count, unsigned int full_gc_count,
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                        GCCause::Cause gc_cause);
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  virtual VMOp_Type type() const { return VMOp_ParallelGCSystemGC; }
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  virtual void doit();
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};