Mercurial > hg > truffle
annotate src/share/vm/oops/typeArrayOop.hpp @ 3762:5c0a3c1858b1
7048782: CMS: assert(last_chunk_index_to_check<= last_chunk_index) failed: parCardTableModRefBS.cpp:359
Summary: The LNC array is sized before the start of a scavenge, while the heap may expand during a scavenge. With CMS, the last block of an arbitrary suffice of the LNC array may expand due to coalition with the expansion delta. We now take care not to attempt access past the end of the LNC array. LNC array code will be cleaned up and suitably encapsulated as part of the forthcoming performance RFE 7043675.
Reviewed-by: brutisso
| author | ysr |
|---|---|
| date | Thu, 02 Jun 2011 10:23:36 -0700 |
| parents | 1d1603768966 |
| children | f08d439fab8c |
| rev | line source |
|---|---|
| 0 | 1 /* |
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7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
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2 * Copyright (c) 1997, 2011, 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 |
| 1972 | 54 |
| 0 | 55 // A typeArrayOop is an array containing basic types (non oop elements). |
| 56 // It is used for arrays of {characters, singles, doubles, bytes, shorts, integers, longs} | |
| 57 #include <limits.h> | |
| 58 | |
| 59 class typeArrayOopDesc : public arrayOopDesc { | |
| 60 protected: | |
| 61 jchar* char_base() const { return (jchar*) base(T_CHAR); } | |
| 62 jboolean* bool_base() const { return (jboolean*)base(T_BOOLEAN); } | |
| 63 jbyte* byte_base() const { return (jbyte*) base(T_BYTE); } | |
| 64 jint* int_base() const { return (jint*) base(T_INT); } | |
| 65 jlong* long_base() const { return (jlong*) base(T_LONG); } | |
| 66 jshort* short_base() const { return (jshort*) base(T_SHORT); } | |
| 67 jfloat* float_base() const { return (jfloat*) base(T_FLOAT); } | |
| 68 jdouble* double_base() const { return (jdouble*) base(T_DOUBLE); } | |
| 69 | |
| 70 friend class typeArrayKlass; | |
| 71 | |
| 72 public: | |
| 73 jbyte* byte_at_addr(int which) const { | |
| 74 assert(is_within_bounds(which), "index out of bounds"); | |
| 75 return &byte_base()[which]; | |
| 76 } | |
| 77 | |
| 78 jboolean* bool_at_addr(int which) const { | |
| 79 assert(is_within_bounds(which), "index out of bounds"); | |
| 80 return &bool_base()[which]; | |
| 81 } | |
| 82 | |
| 83 jchar* char_at_addr(int which) const { | |
| 84 assert(is_within_bounds(which), "index out of bounds"); | |
| 85 return &char_base()[which]; | |
| 86 } | |
| 87 | |
| 88 jint* int_at_addr(int which) const { | |
| 89 assert(is_within_bounds(which), "index out of bounds"); | |
| 90 return &int_base()[which]; | |
| 91 } | |
| 92 | |
| 93 jshort* short_at_addr(int which) const { | |
| 94 assert(is_within_bounds(which), "index out of bounds"); | |
| 95 return &short_base()[which]; | |
| 96 } | |
| 97 | |
| 98 jushort* ushort_at_addr(int which) const { // for field descriptor arrays | |
| 99 assert(is_within_bounds(which), "index out of bounds"); | |
| 100 return (jushort*) &short_base()[which]; | |
| 101 } | |
| 102 | |
| 103 jlong* long_at_addr(int which) const { | |
| 104 assert(is_within_bounds(which), "index out of bounds"); | |
| 105 return &long_base()[which]; | |
| 106 } | |
| 107 | |
| 108 jfloat* float_at_addr(int which) const { | |
| 109 assert(is_within_bounds(which), "index out of bounds"); | |
| 110 return &float_base()[which]; | |
| 111 } | |
| 112 | |
| 113 jdouble* double_at_addr(int which) const { | |
| 114 assert(is_within_bounds(which), "index out of bounds"); | |
| 115 return &double_base()[which]; | |
| 116 } | |
| 117 | |
| 118 jbyte byte_at(int which) const { return *byte_at_addr(which); } | |
| 119 void byte_at_put(int which, jbyte contents) { *byte_at_addr(which) = contents; } | |
| 120 | |
| 121 jboolean bool_at(int which) const { return *bool_at_addr(which); } | |
| 122 void bool_at_put(int which, jboolean contents) { *bool_at_addr(which) = contents; } | |
| 123 | |
| 124 jchar char_at(int which) const { return *char_at_addr(which); } | |
| 125 void char_at_put(int which, jchar contents) { *char_at_addr(which) = contents; } | |
| 126 | |
| 127 jint int_at(int which) const { return *int_at_addr(which); } | |
| 128 void int_at_put(int which, jint contents) { *int_at_addr(which) = contents; } | |
| 129 | |
| 130 jshort short_at(int which) const { return *short_at_addr(which); } | |
| 131 void short_at_put(int which, jshort contents) { *short_at_addr(which) = contents; } | |
| 132 | |
| 133 jushort ushort_at(int which) const { return *ushort_at_addr(which); } | |
| 134 void ushort_at_put(int which, jushort contents) { *ushort_at_addr(which) = contents; } | |
| 135 | |
| 136 jlong long_at(int which) const { return *long_at_addr(which); } | |
| 137 void long_at_put(int which, jlong contents) { *long_at_addr(which) = contents; } | |
| 138 | |
| 139 jfloat float_at(int which) const { return *float_at_addr(which); } | |
| 140 void float_at_put(int which, jfloat contents) { *float_at_addr(which) = contents; } | |
| 141 | |
| 142 jdouble double_at(int which) const { return *double_at_addr(which); } | |
| 143 void double_at_put(int which, jdouble contents) { *double_at_addr(which) = contents; } | |
| 144 | |
| 145 jbyte byte_at_acquire(int which) const { return OrderAccess::load_acquire(byte_at_addr(which)); } | |
| 146 void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); } | |
| 147 | |
| 148 // Sizing | |
| 149 | |
| 150 // Returns the number of words necessary to hold an array of "len" | |
| 151 // elements each of the given "byte_size". | |
| 152 private: | |
| 153 static int object_size(int lh, int length) { | |
| 154 int instance_header_size = Klass::layout_helper_header_size(lh); | |
| 155 int element_shift = Klass::layout_helper_log2_element_size(lh); | |
| 156 DEBUG_ONLY(BasicType etype = Klass::layout_helper_element_type(lh)); | |
| 157 assert(length <= arrayOopDesc::max_array_length(etype), "no overflow"); | |
| 158 | |
| 159 julong size_in_bytes = length; | |
| 160 size_in_bytes <<= element_shift; | |
| 161 size_in_bytes += instance_header_size; | |
| 162 julong size_in_words = ((size_in_bytes + (HeapWordSize-1)) >> LogHeapWordSize); | |
| 163 assert(size_in_words <= (julong)max_jint, "no overflow"); | |
| 164 | |
| 165 return align_object_size((intptr_t)size_in_words); | |
| 166 } | |
| 167 | |
| 168 public: | |
| 169 int object_size() { | |
| 170 typeArrayKlass* tk = typeArrayKlass::cast(klass()); | |
| 171 return object_size(tk->layout_helper(), length()); | |
| 172 } | |
| 173 }; | |
| 1972 | 174 |
| 175 #endif // SHARE_VM_OOPS_TYPEARRAYOOP_HPP |