Mercurial > hg > graal-compiler
view src/share/vm/code/pcDesc.hpp @ 616:4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
6720334: G1: don't update RSets of collection set regions during an evacuation pause
Summary: Introduced a deferred update mechanism for delaying the rset updates during the collection pause
Reviewed-by: apetrusenko, tonyp
author | iveresov |
---|---|
date | Fri, 06 Mar 2009 13:50:14 -0800 |
parents | a61af66fc99e |
children | 72088be4b386 |
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/* * Copyright 1997-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // PcDescs map a physical PC (given as offset from start of nmethod) to // the corresponding source scope and byte code index. class nmethod; class PcDesc VALUE_OBJ_CLASS_SPEC { friend class VMStructs; private: int _pc_offset; // offset from start of nmethod int _scope_decode_offset; // offset for scope in nmethod int _obj_decode_offset; public: int pc_offset() const { return _pc_offset; } int scope_decode_offset() const { return _scope_decode_offset; } int obj_decode_offset() const { return _obj_decode_offset; } void set_pc_offset(int x) { _pc_offset = x; } void set_scope_decode_offset(int x) { _scope_decode_offset = x; } void set_obj_decode_offset(int x) { _obj_decode_offset = x; } // Constructor (only used for static in nmethod.cpp) // Also used by ScopeDesc::sender()] PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset); enum { // upper and lower exclusive limits real offsets: lower_offset_limit = -1, upper_offset_limit = (unsigned int)-1 >> 1 }; // Returns the real pc address real_pc(const nmethod* code) const; void print(nmethod* code); bool verify(nmethod* code); };