Mercurial > hg > truffle
annotate src/share/vm/oops/typeArrayOop.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 | f08d439fab8c |
| children | d8ce2825b193 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 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_OOPS_TYPEARRAYOOP_HPP |
| 26 #define SHARE_VM_OOPS_TYPEARRAYOOP_HPP | |
| 27 | |
| 28 #include "oops/arrayOop.hpp" | |
| 29 #include "oops/typeArrayKlass.hpp" | |
| 30 #ifdef TARGET_OS_ARCH_linux_x86 | |
| 31 # include "orderAccess_linux_x86.inline.hpp" | |
| 32 #endif | |
| 33 #ifdef TARGET_OS_ARCH_linux_sparc | |
| 34 # include "orderAccess_linux_sparc.inline.hpp" | |
| 35 #endif | |
| 36 #ifdef TARGET_OS_ARCH_linux_zero | |
| 37 # include "orderAccess_linux_zero.inline.hpp" | |
| 38 #endif | |
| 39 #ifdef TARGET_OS_ARCH_solaris_x86 | |
| 40 # include "orderAccess_solaris_x86.inline.hpp" | |
| 41 #endif | |
| 42 #ifdef TARGET_OS_ARCH_solaris_sparc | |
| 43 # include "orderAccess_solaris_sparc.inline.hpp" | |
| 44 #endif | |
| 45 #ifdef TARGET_OS_ARCH_windows_x86 | |
| 46 # include "orderAccess_windows_x86.inline.hpp" | |
| 47 #endif | |
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48 #ifdef TARGET_OS_ARCH_linux_arm |
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49 # include "orderAccess_linux_arm.inline.hpp" |
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50 #endif |
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51 #ifdef TARGET_OS_ARCH_linux_ppc |
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52 # include "orderAccess_linux_ppc.inline.hpp" |
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53 #endif |
| 3960 | 54 #ifdef TARGET_OS_ARCH_bsd_x86 |
| 55 # include "orderAccess_bsd_x86.inline.hpp" | |
| 56 #endif | |
| 57 #ifdef TARGET_OS_ARCH_bsd_zero | |
| 58 # include "orderAccess_bsd_zero.inline.hpp" | |
| 59 #endif | |
| 1972 | 60 |
| 0 | 61 // A typeArrayOop is an array containing basic types (non oop elements). |
| 62 // It is used for arrays of {characters, singles, doubles, bytes, shorts, integers, longs} | |
| 63 #include <limits.h> | |
| 64 | |
| 65 class typeArrayOopDesc : public arrayOopDesc { | |
| 66 protected: | |
| 67 jchar* char_base() const { return (jchar*) base(T_CHAR); } | |
| 68 jboolean* bool_base() const { return (jboolean*)base(T_BOOLEAN); } | |
| 69 jbyte* byte_base() const { return (jbyte*) base(T_BYTE); } | |
| 70 jint* int_base() const { return (jint*) base(T_INT); } | |
| 71 jlong* long_base() const { return (jlong*) base(T_LONG); } | |
| 72 jshort* short_base() const { return (jshort*) base(T_SHORT); } | |
| 73 jfloat* float_base() const { return (jfloat*) base(T_FLOAT); } | |
| 74 jdouble* double_base() const { return (jdouble*) base(T_DOUBLE); } | |
| 75 | |
| 76 friend class typeArrayKlass; | |
| 77 | |
| 78 public: | |
| 79 jbyte* byte_at_addr(int which) const { | |
| 80 assert(is_within_bounds(which), "index out of bounds"); | |
| 81 return &byte_base()[which]; | |
| 82 } | |
| 83 | |
| 84 jboolean* bool_at_addr(int which) const { | |
| 85 assert(is_within_bounds(which), "index out of bounds"); | |
| 86 return &bool_base()[which]; | |
| 87 } | |
| 88 | |
| 89 jchar* char_at_addr(int which) const { | |
| 90 assert(is_within_bounds(which), "index out of bounds"); | |
| 91 return &char_base()[which]; | |
| 92 } | |
| 93 | |
| 94 jint* int_at_addr(int which) const { | |
| 95 assert(is_within_bounds(which), "index out of bounds"); | |
| 96 return &int_base()[which]; | |
| 97 } | |
| 98 | |
| 99 jshort* short_at_addr(int which) const { | |
| 100 assert(is_within_bounds(which), "index out of bounds"); | |
| 101 return &short_base()[which]; | |
| 102 } | |
| 103 | |
| 104 jushort* ushort_at_addr(int which) const { // for field descriptor arrays | |
| 105 assert(is_within_bounds(which), "index out of bounds"); | |
| 106 return (jushort*) &short_base()[which]; | |
| 107 } | |
| 108 | |
| 109 jlong* long_at_addr(int which) const { | |
| 110 assert(is_within_bounds(which), "index out of bounds"); | |
| 111 return &long_base()[which]; | |
| 112 } | |
| 113 | |
| 114 jfloat* float_at_addr(int which) const { | |
| 115 assert(is_within_bounds(which), "index out of bounds"); | |
| 116 return &float_base()[which]; | |
| 117 } | |
| 118 | |
| 119 jdouble* double_at_addr(int which) const { | |
| 120 assert(is_within_bounds(which), "index out of bounds"); | |
| 121 return &double_base()[which]; | |
| 122 } | |
| 123 | |
| 124 jbyte byte_at(int which) const { return *byte_at_addr(which); } | |
| 125 void byte_at_put(int which, jbyte contents) { *byte_at_addr(which) = contents; } | |
| 126 | |
| 127 jboolean bool_at(int which) const { return *bool_at_addr(which); } | |
| 128 void bool_at_put(int which, jboolean contents) { *bool_at_addr(which) = contents; } | |
| 129 | |
| 130 jchar char_at(int which) const { return *char_at_addr(which); } | |
| 131 void char_at_put(int which, jchar contents) { *char_at_addr(which) = contents; } | |
| 132 | |
| 133 jint int_at(int which) const { return *int_at_addr(which); } | |
| 134 void int_at_put(int which, jint contents) { *int_at_addr(which) = contents; } | |
| 135 | |
| 136 jshort short_at(int which) const { return *short_at_addr(which); } | |
| 137 void short_at_put(int which, jshort contents) { *short_at_addr(which) = contents; } | |
| 138 | |
| 139 jushort ushort_at(int which) const { return *ushort_at_addr(which); } | |
| 140 void ushort_at_put(int which, jushort contents) { *ushort_at_addr(which) = contents; } | |
| 141 | |
| 142 jlong long_at(int which) const { return *long_at_addr(which); } | |
| 143 void long_at_put(int which, jlong contents) { *long_at_addr(which) = contents; } | |
| 144 | |
| 145 jfloat float_at(int which) const { return *float_at_addr(which); } | |
| 146 void float_at_put(int which, jfloat contents) { *float_at_addr(which) = contents; } | |
| 147 | |
| 148 jdouble double_at(int which) const { return *double_at_addr(which); } | |
| 149 void double_at_put(int which, jdouble contents) { *double_at_addr(which) = contents; } | |
| 150 | |
| 151 jbyte byte_at_acquire(int which) const { return OrderAccess::load_acquire(byte_at_addr(which)); } | |
| 152 void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); } | |
| 153 | |
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154 // Java thinks metadata arrays are just arrays of either long or int, since |
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155 // there doesn't seem to be T_ADDRESS, so this is a bit of unfortunate |
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156 // casting |
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157 #ifdef _LP64 |
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158 Metadata* metadata_at(int which) const { |
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159 return (Metadata*)*long_at_addr(which); } |
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160 void metadata_at_put(int which, Metadata* contents) { |
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161 *long_at_addr(which) = (long)contents; |
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162 } |
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163 #else |
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164 Metadata* metadata_at(int which) const { |
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165 return (Metadata*)*int_at_addr(which); } |
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166 void metadata_at_put(int which, Metadata* contents) { |
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167 *int_at_addr(which) = (int)contents; |
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168 } |
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169 #endif // _LP64 |
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170 |
| 0 | 171 // Sizing |
| 172 | |
| 173 // Returns the number of words necessary to hold an array of "len" | |
| 174 // elements each of the given "byte_size". | |
| 175 private: | |
| 176 static int object_size(int lh, int length) { | |
| 177 int instance_header_size = Klass::layout_helper_header_size(lh); | |
| 178 int element_shift = Klass::layout_helper_log2_element_size(lh); | |
| 179 DEBUG_ONLY(BasicType etype = Klass::layout_helper_element_type(lh)); | |
| 180 assert(length <= arrayOopDesc::max_array_length(etype), "no overflow"); | |
| 181 | |
| 182 julong size_in_bytes = length; | |
| 183 size_in_bytes <<= element_shift; | |
| 184 size_in_bytes += instance_header_size; | |
| 185 julong size_in_words = ((size_in_bytes + (HeapWordSize-1)) >> LogHeapWordSize); | |
| 186 assert(size_in_words <= (julong)max_jint, "no overflow"); | |
| 187 | |
| 188 return align_object_size((intptr_t)size_in_words); | |
| 189 } | |
| 190 | |
| 191 public: | |
| 192 int object_size() { | |
| 193 typeArrayKlass* tk = typeArrayKlass::cast(klass()); | |
| 194 return object_size(tk->layout_helper(), length()); | |
| 195 } | |
| 196 }; | |
| 1972 | 197 |
| 198 #endif // SHARE_VM_OOPS_TYPEARRAYOOP_HPP |