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annotate src/share/vm/ci/ciTypeArrayKlass.hpp @ 8733:9def4075da6d

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8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate(). Reviewed-by: johnc, ysr Contributed-by: tamao <tao.mao@oracle.com>
author tamao
date Tue, 05 Mar 2013 15:36:56 -0800
parents d8ce2825b193
children d13d7aba8c12
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1 /*
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_CI_CITYPEARRAYKLASS_HPP
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26 #define SHARE_VM_CI_CITYPEARRAYKLASS_HPP
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27
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28 #include "ci/ciArrayKlass.hpp"
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29
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30 // ciTypeArrayKlass
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31 //
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32 // This class represents a Klass* in the HotSpot virtual machine
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33 // whose Klass part in a TypeArrayKlass.
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34 class ciTypeArrayKlass : public ciArrayKlass {
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35 CI_PACKAGE_ACCESS
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36
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37 protected:
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38 ciTypeArrayKlass(KlassHandle h_k);
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39
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40 TypeArrayKlass* get_TypeArrayKlass() {
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41 return (TypeArrayKlass*)get_Klass();
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42 }
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43
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44 const char* type_string() { return "ciTypeArrayKlass"; }
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45
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46 // Helper method for make.
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47 static ciTypeArrayKlass* make_impl(BasicType type);
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48
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49 public:
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50 // The type of the array elements.
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51 BasicType element_type() {
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52 return Klass::layout_helper_element_type(layout_helper());
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53 }
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54
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55 // What kind of ciObject is this?
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56 bool is_type_array_klass() const { return true; }
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57
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58 // Make an array klass corresponding to the specified primitive type.
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59 static ciTypeArrayKlass* make(BasicType type);
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60 };
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61
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62 #endif // SHARE_VM_CI_CITYPEARRAYKLASS_HPP