Mercurial > hg > graal-compiler
view src/share/vm/opto/multnode.hpp @ 4836:d30fa85f9994
6484965: G1: piggy-back liveness accounting phase on marking
Summary: Remove the separate counting phase of concurrent marking by tracking the amount of marked bytes and the cards spanned by marked objects in marking task/worker thread local data structures, which are updated as individual objects are marked.
Reviewed-by: brutisso, tonyp
author | johnc |
---|---|
date | Thu, 12 Jan 2012 00:06:47 -0800 |
parents | f95d63e2154a |
children | 6f3fd5150b67 |
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/* * Copyright (c) 1997, 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_OPTO_MULTNODE_HPP #define SHARE_VM_OPTO_MULTNODE_HPP #include "opto/node.hpp" class Matcher; class ProjNode; //------------------------------MultiNode-------------------------------------- // This class defines a MultiNode, a Node which produces many values. The // values are wrapped up in a tuple Type, i.e. a TypeTuple. class MultiNode : public Node { public: MultiNode( uint required ) : Node(required) { init_class_id(Class_Multi); } virtual int Opcode() const; virtual const Type *bottom_type() const = 0; virtual bool is_CFG() const { return true; } virtual uint hash() const { return NO_HASH; } // CFG nodes do not hash virtual bool depends_only_on_test() const { return false; } virtual const RegMask &out_RegMask() const; virtual Node *match( const ProjNode *proj, const Matcher *m ); virtual uint ideal_reg() const { return NotAMachineReg; } ProjNode* proj_out(uint which_proj) const; // Get a named projection }; //------------------------------ProjNode--------------------------------------- // This class defines a Projection node. Projections project a single element // out of a tuple (or Signature) type. Only MultiNodes produce TypeTuple // results. class ProjNode : public Node { protected: virtual uint hash() const; virtual uint cmp( const Node &n ) const; virtual uint size_of() const; void check_con() const; // Called from constructor. public: ProjNode( Node *src, uint con, bool io_use = false ) : Node( src ), _con(con), _is_io_use(io_use) { init_class_id(Class_Proj); // Optimistic setting. Need additional checks in Node::is_dead_loop_safe(). if (con != TypeFunc::Memory || src->is_Start()) init_flags(Flag_is_dead_loop_safe); debug_only(check_con()); } const uint _con; // The field in the tuple we are projecting const bool _is_io_use; // Used to distinguish between the projections // used on the control and io paths from a macro node virtual int Opcode() const; virtual bool is_CFG() const; virtual bool depends_only_on_test() const { return false; } virtual const Type *bottom_type() const; virtual const TypePtr *adr_type() const; virtual bool pinned() const; virtual const Type *Value( PhaseTransform *phase ) const; virtual uint ideal_reg() const; virtual const RegMask &out_RegMask() const; #ifndef PRODUCT virtual void dump_spec(outputStream *st) const; #endif }; #endif // SHARE_VM_OPTO_MULTNODE_HPP