Mercurial > hg > truffle
annotate src/share/vm/ci/ciArrayKlass.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f6f3bb0ee072 |
| children | d8ce2825b193 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6964458: Reimplement class meta-data storage to use native memory
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 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. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CI_CIARRAYKLASS_HPP |
| 26 #define SHARE_VM_CI_CIARRAYKLASS_HPP | |
| 27 | |
| 28 #include "ci/ciKlass.hpp" | |
| 29 | |
| 0 | 30 // ciArrayKlass |
| 31 // | |
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32 // This class, and its subclasses represent Klass*s in the |
| 0 | 33 // HotSpot virtual machine whose Klass part is an arrayKlass. |
| 34 class ciArrayKlass : public ciKlass { | |
| 3939 | 35 CI_PACKAGE_ACCESS |
| 0 | 36 private: |
| 37 jint _dimension; | |
| 38 | |
| 39 protected: | |
| 40 ciArrayKlass(KlassHandle h_k); | |
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41 ciArrayKlass(ciSymbol* name, int dimension, BasicType bt); |
| 0 | 42 |
| 43 arrayKlass* get_arrayKlass() { | |
| 44 return (arrayKlass*)get_Klass(); | |
| 45 } | |
| 46 | |
| 47 const char* type_string() { return "ciArrayKlass"; } | |
| 48 | |
| 49 public: | |
| 50 jint dimension() { return _dimension; } | |
| 51 ciType* element_type(); // JLS calls this the "component type" | |
| 52 ciType* base_element_type(); // JLS calls this the "element type" | |
| 53 bool is_leaf_type(); // No subtypes of this array type. | |
| 54 | |
| 55 ciInstance* component_mirror() { | |
| 56 // This is a real field in arrayKlass, but we derive it from element_type. | |
| 57 return element_type()->java_mirror(); | |
| 58 } | |
| 59 | |
| 60 // What kind of vmObject is this? | |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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3939
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61 bool is_array_klass() const { return true; } |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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62 bool is_java_klass() const { return true; } |
| 0 | 63 |
| 64 static ciArrayKlass* make(ciType* element_type); | |
| 65 }; | |
| 1972 | 66 |
| 67 #endif // SHARE_VM_CI_CIARRAYKLASS_HPP |