Mercurial > hg > graal-compiler
view src/share/vm/opto/live.hpp @ 3992:d1bdeef3e3e2
7098282: G1: assert(interval >= 0) failed: Sanity check, referencePolicy.cpp: 76
Summary: There is a race between one thread successfully forwarding and copying the klass mirror for the SoftReference class (including the static master clock) and another thread attempting to use the master clock while attempting to discover a soft reference object. Maintain a shadow copy of the soft reference master clock and use the shadow during reference discovery and reference processing.
Reviewed-by: tonyp, brutisso, ysr
author | johnc |
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date | Wed, 12 Oct 2011 10:25:51 -0700 |
parents | f95d63e2154a |
children | 056ab43544a4 |
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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_LIVE_HPP #define SHARE_VM_OPTO_LIVE_HPP #include "libadt/port.hpp" #include "libadt/vectset.hpp" #include "opto/block.hpp" #include "opto/indexSet.hpp" #include "opto/phase.hpp" #include "opto/regmask.hpp" class Block; class LRG_List; class PhaseCFG; class VectorSet; class IndexSet; //------------------------------PhaseLive-------------------------------------- // Compute live-in/live-out class PhaseLive : public Phase { // Array of Sets of values live at the start of a block. // Indexed by block pre-order number. IndexSet *_live; // Array of Sets of values defined locally in the block // Indexed by block pre-order number. IndexSet *_defs; // Array of delta-set pointers, indexed by block pre-order number IndexSet **_deltas; IndexSet *_free_IndexSet; // Free list of same Block_List *_worklist; // Worklist for iterative solution const PhaseCFG &_cfg; // Basic blocks LRG_List &_names; // Mapping from Nodes to live ranges uint _maxlrg; // Largest live-range number Arena *_arena; IndexSet *getset( Block *p ); IndexSet *getfreeset( ); void freeset( const Block *p ); void add_liveout( Block *p, uint r, VectorSet &first_pass ); void add_liveout( Block *p, IndexSet *lo, VectorSet &first_pass ); public: PhaseLive( const PhaseCFG &cfg, LRG_List &names, Arena *arena ); ~PhaseLive() {} // Compute liveness info void compute(uint maxlrg); // Reset arena storage void reset() { _live = NULL; } // Return the live-out set for this block IndexSet *live( const Block * b ) { return &_live[b->_pre_order-1]; } #ifndef PRODUCT void dump( const Block *b ) const; void stats(uint iters) const; #endif }; #endif // SHARE_VM_OPTO_LIVE_HPP