genOopClosures.hpp revision 3863
2371N/A * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 0N/A * published by the Free Software Foundation. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1472N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 0N/A// Closure for iterating roots from a particular generation 0N/A// Note: all classes deriving from this MUST call this do_barrier 0N/A// method at the end of their own do_oop method! 0N/A// Note: no do_oop defined, this is an abstract class. 0N/A // Some subtypes need access. 0N/A // Derived classes that modify oops so that they might be old-to-young 0N/A // pointers must call the method below. 342N/A // Version for use by closures that may be called in parallel code. 0N/A // Problem with static closures: must have _gen_boundary set at some point, 0N/A // but cannot do this until after the heap is initialized. 0N/A// Closure for scanning DefNewGeneration. 0N/A// This closure will perform barrier store calls for ALL 0N/A// pointers in scanned oops. 0N/A// Closure for scanning DefNewGeneration. 0N/A// This closure only performs barrier store calls on 0N/A// pointers into the DefNewGeneration. This is less 0N/A// precise, but faster, than a ScanClosure 0N/A// Closure for scanning DefNewGeneration's weak references. 0N/A// NOTE: very much like ScanClosure but not derived from 0N/A// OopsInGenClosure -- weak references are processed all 0N/A// at once, with no notion of which generation they were in. 1879N/A#
endif // SHARE_VM_MEMORY_GENOOPCLOSURES_HPP