Mercurial > hg > graal-compiler
annotate src/share/vm/oops/constMethod.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 | src/share/vm/oops/constMethodOop.hpp@8150fa46d2ed |
| children | 4735d2c84362 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
1972
diff
changeset
|
2 * Copyright (c) 2003, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_OOPS_CONSTMETHODOOP_HPP |
| 26 #define SHARE_VM_OOPS_CONSTMETHODOOP_HPP | |
| 27 | |
| 28 #include "oops/oop.hpp" | |
| 29 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
30 // An ConstMethod* represents portions of a Java method which |
| 0 | 31 // do not vary. |
| 32 // | |
| 33 // Memory layout (each line represents a word). Note that most | |
| 34 // applications load thousands of methods, so keeping the size of this | |
| 35 // structure small has a big impact on footprint. | |
| 36 // | |
| 37 // |------------------------------------------------------| | |
| 38 // | header | | |
| 39 // | klass | | |
| 40 // |------------------------------------------------------| | |
| 41 // | fingerprint 1 | | |
| 42 // | fingerprint 2 | | |
|
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
1972
diff
changeset
|
43 // | constants (oop) | |
| 0 | 44 // | stackmap_data (oop) | |
| 45 // | constMethod_size | | |
| 46 // | interp_kind | flags | code_size | | |
| 47 // | name index | signature index | | |
| 48 // | method_idnum | generic_signature_index | | |
| 49 // |------------------------------------------------------| | |
| 50 // | | | |
| 51 // | byte codes | | |
| 52 // | | | |
| 53 // |------------------------------------------------------| | |
| 54 // | compressed linenumber table | | |
| 55 // | (see class CompressedLineNumberReadStream) | | |
| 56 // | (note that length is unknown until decompressed) | | |
| 57 // | (access flags bit tells whether table is present) | | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
58 // | (indexed from start of ConstMethod*) | |
| 0 | 59 // | (elements not necessarily sorted!) | |
| 60 // |------------------------------------------------------| | |
| 61 // | localvariable table elements + length (length last) | | |
| 62 // | (length is u2, elements are 6-tuples of u2) | | |
| 63 // | (see class LocalVariableTableElement) | | |
| 64 // | (access flags bit tells whether table is present) | | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
65 // | (indexed from end of ConstMethod*) | |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
66 // |------------------------------------------------------| |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
67 // | exception table + length (length last) | |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
68 // | (length is u2, elements are 4-tuples of u2) | |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
69 // | (see class ExceptionTableElement) | |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
70 // | (access flags bit tells whether table is present) | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
71 // | (indexed from end of ConstMethod*) | |
| 0 | 72 // |------------------------------------------------------| |
| 73 // | checked exceptions elements + length (length last) | | |
| 74 // | (length is u2, elements are u2) | | |
| 75 // | (see class CheckedExceptionElement) | | |
| 76 // | (access flags bit tells whether table is present) | | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
77 // | (indexed from end of ConstMethod*) | |
| 0 | 78 // |------------------------------------------------------| |
| 79 | |
| 80 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
81 // Utitily class decribing elements in checked exceptions table inlined in Method*. |
| 0 | 82 class CheckedExceptionElement VALUE_OBJ_CLASS_SPEC { |
| 83 public: | |
| 84 u2 class_cp_index; | |
| 85 }; | |
| 86 | |
| 87 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
88 // Utitily class decribing elements in local variable table inlined in Method*. |
| 0 | 89 class LocalVariableTableElement VALUE_OBJ_CLASS_SPEC { |
| 90 public: | |
| 91 u2 start_bci; | |
| 92 u2 length; | |
| 93 u2 name_cp_index; | |
| 94 u2 descriptor_cp_index; | |
| 95 u2 signature_cp_index; | |
| 96 u2 slot; | |
| 97 }; | |
| 98 | |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
99 // Utitily class describing elements in exception table |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
100 class ExceptionTableElement VALUE_OBJ_CLASS_SPEC { |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
101 public: |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
102 u2 start_pc; |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
103 u2 end_pc; |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
104 u2 handler_pc; |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
105 u2 catch_type_index; |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
106 }; |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
107 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
108 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
109 class ConstMethod : public MetaspaceObj { |
| 0 | 110 friend class VMStructs; |
| 111 private: | |
| 112 enum { | |
| 113 _has_linenumber_table = 1, | |
| 114 _has_checked_exceptions = 2, | |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
115 _has_localvariable_table = 4, |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
116 _has_exception_table = 8 |
| 0 | 117 }; |
| 118 | |
| 119 // Bit vector of signature | |
| 120 // Callers interpret 0=not initialized yet and | |
| 121 // -1=too many args to fix, must parse the slow way. | |
| 122 // The real initial value is special to account for nonatomicity of 64 bit | |
| 123 // loads and stores. This value may updated and read without a lock by | |
| 124 // multiple threads, so is volatile. | |
| 125 volatile uint64_t _fingerprint; | |
| 126 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
127 ConstantPool* _constants; // Constant pool |
| 0 | 128 |
| 129 // Raw stackmap data for the method | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
130 Array<u1>* _stackmap_data; |
| 0 | 131 |
| 132 int _constMethod_size; | |
| 133 jbyte _interpreter_kind; | |
| 134 jbyte _flags; | |
| 135 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
136 // Size of Java bytecodes allocated immediately after Method*. |
| 0 | 137 u2 _code_size; |
| 138 u2 _name_index; // Method name (index in constant pool) | |
| 139 u2 _signature_index; // Method signature (index in constant pool) | |
| 140 u2 _method_idnum; // unique identification number for the method within the class | |
| 141 // initially corresponds to the index into the methods array. | |
| 142 // but this may change with redefinition | |
| 143 u2 _generic_signature_index; // Generic signature (index in constant pool, 0 if absent) | |
| 144 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
145 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
146 // Constructor |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
147 ConstMethod(int byte_code_size, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
148 int compressed_line_number_size, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
149 int localvariable_table_length, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
150 int exception_table_length, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
151 int checked_exceptions_length, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
152 int size); |
| 0 | 153 public: |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
154 static ConstMethod* allocate(ClassLoaderData* loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
155 int byte_code_size, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
156 int compressed_line_number_size, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
157 int localvariable_table_length, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
158 int exception_table_length, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
159 int checked_exceptions_length, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
160 TRAPS); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
161 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
162 bool is_constMethod() const { return true; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
163 |
| 0 | 164 // Inlined tables |
| 165 void set_inlined_tables_length(int checked_exceptions_len, | |
| 166 int compressed_line_number_size, | |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
167 int localvariable_table_len, |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
168 int exception_table_len); |
| 0 | 169 |
| 170 bool has_linenumber_table() const | |
| 171 { return (_flags & _has_linenumber_table) != 0; } | |
| 172 | |
| 173 bool has_checked_exceptions() const | |
| 174 { return (_flags & _has_checked_exceptions) != 0; } | |
| 175 | |
| 176 bool has_localvariable_table() const | |
| 177 { return (_flags & _has_localvariable_table) != 0; } | |
| 178 | |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
179 bool has_exception_handler() const |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
180 { return (_flags & _has_exception_table) != 0; } |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
181 |
| 0 | 182 void set_interpreter_kind(int kind) { _interpreter_kind = kind; } |
| 183 int interpreter_kind(void) const { return _interpreter_kind; } | |
| 184 | |
|
6123
2fe087c3e814
7172967: Eliminate constMethod's _method backpointer to methodOop.
jiangli
parents:
1972
diff
changeset
|
185 // constant pool |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
186 ConstantPool* constants() const { return _constants; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
187 void set_constants(ConstantPool* c) { _constants = c; } |
| 0 | 188 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
189 Method* method() const; |
| 0 | 190 |
| 191 // stackmap table data | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
192 Array<u1>* stackmap_data() const { return _stackmap_data; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
193 void set_stackmap_data(Array<u1>* sd) { _stackmap_data = sd; } |
| 0 | 194 bool has_stackmap_table() const { return _stackmap_data != NULL; } |
| 195 | |
| 196 void init_fingerprint() { | |
| 197 const uint64_t initval = CONST64(0x8000000000000000); | |
| 198 _fingerprint = initval; | |
| 199 } | |
| 200 | |
| 201 uint64_t fingerprint() const { | |
| 202 // Since reads aren't atomic for 64 bits, if any of the high or low order | |
| 203 // word is the initial value, return 0. See init_fingerprint for initval. | |
| 204 uint high_fp = (uint)(_fingerprint >> 32); | |
| 205 if ((int) _fingerprint == 0 || high_fp == 0x80000000) { | |
| 206 return 0L; | |
| 207 } else { | |
| 208 return _fingerprint; | |
| 209 } | |
| 210 } | |
| 211 | |
| 212 uint64_t set_fingerprint(uint64_t new_fingerprint) { | |
| 213 #ifdef ASSERT | |
| 214 // Assert only valid if complete/valid 64 bit _fingerprint value is read. | |
| 215 uint64_t oldfp = fingerprint(); | |
| 216 #endif // ASSERT | |
| 217 _fingerprint = new_fingerprint; | |
| 218 assert(oldfp == 0L || new_fingerprint == oldfp, | |
| 219 "fingerprint cannot change"); | |
| 220 assert(((new_fingerprint >> 32) != 0x80000000) && (int)new_fingerprint !=0, | |
| 221 "fingerprint should call init to set initial value"); | |
| 222 return new_fingerprint; | |
| 223 } | |
| 224 | |
| 225 // name | |
| 226 int name_index() const { return _name_index; } | |
| 227 void set_name_index(int index) { _name_index = index; } | |
| 228 | |
| 229 // signature | |
| 230 int signature_index() const { return _signature_index; } | |
| 231 void set_signature_index(int index) { _signature_index = index; } | |
| 232 | |
| 233 // generics support | |
| 234 int generic_signature_index() const { return _generic_signature_index; } | |
| 235 void set_generic_signature_index(int index) { _generic_signature_index = index; } | |
| 236 | |
| 237 // Sizing | |
| 238 static int header_size() { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
239 return sizeof(ConstMethod)/HeapWordSize; |
| 0 | 240 } |
| 241 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
242 // Size needed |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
243 static int size(int code_size, int compressed_line_number_size, |
| 0 | 244 int local_variable_table_length, |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
245 int exception_table_length, |
| 0 | 246 int checked_exceptions_length); |
| 247 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
248 int size() const { return _constMethod_size;} |
| 0 | 249 void set_constMethod_size(int size) { _constMethod_size = size; } |
| 250 | |
| 251 // code size | |
| 252 int code_size() const { return _code_size; } | |
| 253 void set_code_size(int size) { | |
| 254 assert(max_method_code_size < (1 << 16), | |
| 255 "u2 is too small to hold method code size in general"); | |
| 256 assert(0 <= size && size <= max_method_code_size, "invalid code size"); | |
| 257 _code_size = size; | |
| 258 } | |
| 259 | |
| 260 // linenumber table - note that length is unknown until decompression, | |
| 261 // see class CompressedLineNumberReadStream. | |
| 262 u_char* compressed_linenumber_table() const; // not preserved by gc | |
| 263 u2* checked_exceptions_length_addr() const; | |
| 264 u2* localvariable_table_length_addr() const; | |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
265 u2* exception_table_length_addr() const; |
| 0 | 266 |
| 267 // checked exceptions | |
| 268 int checked_exceptions_length() const; | |
| 269 CheckedExceptionElement* checked_exceptions_start() const; | |
| 270 | |
| 271 // localvariable table | |
| 272 int localvariable_table_length() const; | |
| 273 LocalVariableTableElement* localvariable_table_start() const; | |
| 274 | |
|
6213
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
275 // exception table |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
276 int exception_table_length() const; |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
277 ExceptionTableElement* exception_table_start() const; |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
jiangli
parents:
6123
diff
changeset
|
278 |
| 0 | 279 // byte codes |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
579
diff
changeset
|
280 void set_code(address code) { |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
579
diff
changeset
|
281 if (code_size() > 0) { |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
579
diff
changeset
|
282 memcpy(code_base(), code, code_size()); |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
579
diff
changeset
|
283 } |
|
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
579
diff
changeset
|
284 } |
| 0 | 285 address code_base() const { return (address) (this+1); } |
| 286 address code_end() const { return code_base() + code_size(); } | |
| 287 bool contains(address bcp) const { return code_base() <= bcp | |
| 288 && bcp < code_end(); } | |
| 289 // Offset to bytecodes | |
| 290 static ByteSize codes_offset() | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
291 { return in_ByteSize(sizeof(ConstMethod)); } |
| 0 | 292 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
293 static ByteSize constants_offset() |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
294 { return byte_offset_of(ConstMethod, _constants); } |
| 0 | 295 |
| 296 // Unique id for the method | |
| 297 static const u2 MAX_IDNUM; | |
| 298 static const u2 UNSET_IDNUM; | |
| 299 u2 method_idnum() const { return _method_idnum; } | |
| 300 void set_method_idnum(u2 idnum) { _method_idnum = idnum; } | |
| 301 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
302 // Deallocation for RedefineClasses |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
303 void deallocate_contents(ClassLoaderData* loader_data); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
304 bool is_klass() const { return false; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
305 DEBUG_ONLY(bool on_stack() { return false; }) |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
306 |
| 0 | 307 private: |
| 308 // Since the size of the compressed line number table is unknown, the | |
| 309 // offsets of the other variable sized sections are computed backwards | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
310 // from the end of the ConstMethod*. |
| 0 | 311 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
312 // First byte after ConstMethod* |
| 0 | 313 address constMethod_end() const |
| 314 { return (address)((oop*)this + _constMethod_size); } | |
| 315 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
316 // Last short in ConstMethod* |
| 0 | 317 u2* last_u2_element() const |
| 318 { return (u2*)constMethod_end() - 1; } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
319 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
320 public: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
321 // Printing |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
322 void print_on (outputStream* st) const; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
323 void print_value_on(outputStream* st) const; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
324 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
325 const char* internal_name() const { return "{constMethod}"; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
326 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
327 // Verify |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6213
diff
changeset
|
328 void verify_on(outputStream* st); |
| 0 | 329 }; |
| 1972 | 330 |
| 331 #endif // SHARE_VM_OOPS_CONSTMETHODOOP_HPP |