Mercurial > hg > truffle
view src/share/vm/memory/genMarkSweep.hpp @ 11860:762dc2f23d1c
InvokeWithException: make next successor a special begin node which has the same locationidentity as the invoke
InvokeWithExceptionNode has the unpleasant property that it is a ControlSplit
and MemoryCheckPoint at the same time. In terms of scheduling, a node cannot
be placed after a ControlSplit node as it denotes the end of a block. Thus,
instead of connecting a FloatingReadNode to the InvokeWithException node
directly (as lastLocationAccess), we point rather to the BeginNode
(non-exceptional case) or ExceptionBeginNode.
To preserve consistency regarding memory dependencies, the former node must be
also a MemoryCheckPoint.
author | Bernhard Urban <bernhard.urban@jku.at> |
---|---|
date | Wed, 02 Oct 2013 11:16:21 +0200 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 2001, 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_MEMORY_GENMARKSWEEP_HPP #define SHARE_VM_MEMORY_GENMARKSWEEP_HPP #include "gc_implementation/shared/markSweep.hpp" class GenMarkSweep : public MarkSweep { friend class VM_MarkSweep; friend class G1MarkSweep; public: static void invoke_at_safepoint(int level, ReferenceProcessor* rp, bool clear_all_softrefs); private: // Mark live objects static void mark_sweep_phase1(int level, bool clear_all_softrefs); // Calculate new addresses static void mark_sweep_phase2(); // Update pointers static void mark_sweep_phase3(int level); // Move objects to new positions static void mark_sweep_phase4(); // Temporary data structures for traversal and storing/restoring marks static void allocate_stacks(); static void deallocate_stacks(); }; #endif // SHARE_VM_MEMORY_GENMARKSWEEP_HPP