author | neliasso |
Tue, 20 Oct 2015 18:07:28 +0200 | |
changeset 33451 | 0712796e4039 |
parent 32351 | 1da9b960b3d4 |
child 33222 | e0a340f4ab6e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 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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#include "precompiled.hpp" |
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#include "runtime/arguments.hpp" |
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#include "runtime/commandLineFlagConstraintsRuntime.hpp" |
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#include "runtime/commandLineFlagRangeList.hpp" |
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#include "runtime/globals.hpp" |
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#include "utilities/defaultStream.hpp" |
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Flag::Error ObjectAlignmentInBytesConstraintFunc(intx value, bool verbose) { |
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if (!is_power_of_2(value)) { |
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CommandLineError::print(verbose, |
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"ObjectAlignmentInBytes (" INTX_FORMAT ") must be " |
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"power of 2\n", |
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value); |
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return Flag::VIOLATES_CONSTRAINT; |
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} |
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// In case page size is very small. |
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if (value >= (intx)os::vm_page_size()) { |
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CommandLineError::print(verbose, |
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"ObjectAlignmentInBytes (" INTX_FORMAT ") must be " |
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"less than page size " INTX_FORMAT "\n", |
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value, (intx)os::vm_page_size()); |
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return Flag::VIOLATES_CONSTRAINT; |
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} |
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return Flag::SUCCESS; |
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} |
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// Need to enforce the padding not to break the existing field alignments. |
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// It is sufficient to check against the largest type size. |
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Flag::Error ContendedPaddingWidthConstraintFunc(intx value, bool verbose) { |
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if ((value != 0) && ((value % BytesPerLong) != 0)) { |
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CommandLineError::print(verbose, |
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"ContendedPaddingWidth (" INTX_FORMAT ") must be " |
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"a multiple of %d\n", |
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value, BytesPerLong); |
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return Flag::VIOLATES_CONSTRAINT; |
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} else { |
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return Flag::SUCCESS; |
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} |
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} |