author | stefank |
Tue, 19 Feb 2019 10:04:28 +0100 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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|
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package sun.jvm.hotspot.gc.z; |
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import sun.jvm.hotspot.debugger.Address; |
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import sun.jvm.hotspot.runtime.VM; |
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class ZAddress { |
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static long as_long(Address value) { |
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if (value == null) { |
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return 0; |
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} |
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return value.asLongValue(); |
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}; |
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static boolean is_null(Address value) { |
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return value == null; |
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} |
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static boolean is_weak_bad(Address value) { |
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return (as_long(value) & ZGlobals.ZAddressWeakBadMask()) != 0; |
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} |
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static boolean is_weak_good(Address value) { |
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return !is_weak_bad(value) && !is_null(value); |
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} |
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static boolean is_weak_good_or_null(Address value) { |
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return !is_weak_bad(value); |
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} |
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static long offset(Address address) { |
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return as_long(address) & ZGlobals.ZAddressOffsetMask; |
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} |
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static Address address(long value) { |
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VM vm = VM.getVM(); |
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if (vm.getOS().equals("solaris") && vm.getCPU().equals("sparc")) { |
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value |= ZGlobals.ZAddressSpaceStart; |
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} |
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return ZUtils.longToAddress(value); |
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} |
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static Address good(Address value) { |
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return address(offset(value) | ZGlobals.ZAddressGoodMask()); |
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} |
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static Address good_or_null(Address value) { |
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return is_null(value) ? value : good(value); |
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} |
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} |