Mercurial > hg > truffle
annotate src/share/vm/ci/ciType.cpp @ 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 | f95d63e2154a |
| children | 070d523b96a7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 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 #include "precompiled.hpp" |
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26 #include "ci/ciEnv.hpp" |
| 1972 | 27 #include "ci/ciType.hpp" |
| 28 #include "ci/ciUtilities.hpp" | |
| 29 #include "classfile/systemDictionary.hpp" | |
| 30 #include "oops/oop.inline.hpp" | |
| 0 | 31 |
| 32 ciType* ciType::_basic_types[T_CONFLICT+1]; | |
| 33 | |
| 34 // ciType | |
| 35 // | |
| 36 // This class represents either a class (T_OBJECT), array (T_ARRAY), | |
| 37 // or one of the primitive types such as T_INT. | |
| 38 | |
| 39 // ------------------------------------------------------------------ | |
| 40 // ciType::ciType | |
| 41 // | |
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42 ciType::ciType(BasicType basic_type) : ciMetadata() { |
| 0 | 43 assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check"); |
| 44 _basic_type = basic_type; | |
| 45 } | |
| 46 | |
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coleenp
parents:
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47 ciType::ciType(KlassHandle k) : ciMetadata(k()) { |
| 0 | 48 _basic_type = Klass::cast(k())->oop_is_array() ? T_ARRAY : T_OBJECT; |
| 49 } | |
| 50 | |
| 51 | |
| 52 // ------------------------------------------------------------------ | |
| 53 // ciType::is_subtype_of | |
| 54 // | |
| 55 bool ciType::is_subtype_of(ciType* type) { | |
| 56 if (this == type) return true; | |
| 57 if (is_klass() && type->is_klass()) | |
| 58 return this->as_klass()->is_subtype_of(type->as_klass()); | |
| 59 return false; | |
| 60 } | |
| 61 | |
| 62 // ------------------------------------------------------------------ | |
| 63 // ciType::print_impl | |
| 64 // | |
| 65 // Implementation of the print method. | |
| 66 void ciType::print_impl(outputStream* st) { | |
| 67 st->print(" type="); | |
| 68 print_name_on(st); | |
| 69 } | |
| 70 | |
| 71 // ------------------------------------------------------------------ | |
| 72 // ciType::print_name | |
| 73 // | |
| 74 // Print the name of this type | |
| 75 void ciType::print_name_on(outputStream* st) { | |
| 76 st->print(type2name(basic_type())); | |
| 77 } | |
| 78 | |
| 79 | |
| 80 | |
| 81 // ------------------------------------------------------------------ | |
| 82 // ciType::java_mirror | |
| 83 // | |
| 84 ciInstance* ciType::java_mirror() { | |
| 85 VM_ENTRY_MARK; | |
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86 return CURRENT_THREAD_ENV->get_instance(Universe::java_mirror(basic_type())); |
| 0 | 87 } |
| 88 | |
| 89 // ------------------------------------------------------------------ | |
| 90 // ciType::box_klass | |
| 91 // | |
| 92 ciKlass* ciType::box_klass() { | |
| 93 if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing" | |
| 94 | |
| 95 // Void is "boxed" with a null. | |
| 96 if (basic_type() == T_VOID) return NULL; | |
| 97 | |
| 98 VM_ENTRY_MARK; | |
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coleenp
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99 return CURRENT_THREAD_ENV->get_instance_klass(SystemDictionary::box_klass(basic_type())); |
| 0 | 100 } |
| 101 | |
| 102 | |
| 103 // ------------------------------------------------------------------ | |
| 104 // ciType::make | |
| 105 // | |
| 106 // Produce the ciType for a given primitive BasicType. | |
| 107 // As a bonus, produce the right reference type for T_OBJECT. | |
| 108 // Does not work on T_ARRAY. | |
| 109 ciType* ciType::make(BasicType t) { | |
| 110 // short, etc. | |
| 111 // Note: Bare T_ADDRESS means a raw pointer type, not a return_address. | |
| 112 assert((uint)t < T_CONFLICT+1, "range check"); | |
| 1142 | 113 if (t == T_OBJECT) return ciEnv::_Object_klass; // java/lang/Object |
| 0 | 114 assert(_basic_types[t] != NULL, "domain check"); |
| 115 return _basic_types[t]; | |
| 116 } | |
| 117 | |
| 118 // ciReturnAddress | |
| 119 // | |
| 120 // This class represents the type of a specific return address in the | |
| 121 // bytecodes. | |
| 122 | |
| 123 // ------------------------------------------------------------------ | |
| 124 // ciReturnAddress::ciReturnAddress | |
| 125 // | |
| 126 ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) { | |
| 127 assert(0 <= bci, "bci cannot be negative"); | |
| 128 _bci = bci; | |
| 129 } | |
| 130 | |
| 131 // ------------------------------------------------------------------ | |
| 132 // ciReturnAddress::print_impl | |
| 133 // | |
| 134 // Implementation of the print method. | |
| 135 void ciReturnAddress::print_impl(outputStream* st) { | |
| 136 st->print(" bci=%d", _bci); | |
| 137 } | |
| 138 | |
| 139 // ------------------------------------------------------------------ | |
| 140 // ciReturnAddress::make | |
| 141 ciReturnAddress* ciReturnAddress::make(int bci) { | |
| 142 GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);) | |
| 143 } |