Mercurial > hg > truffle
annotate src/share/vm/oops/method.hpp @ 14335:4802ce6fbff6
8016644: Improve UnsupportedClassVersionError message
Summary: Improved the UnsupportedClassVersionError message to hopefully be more user friendly
Reviewed-by: coleenp, dholmes, twisti
author | ctornqvi |
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date | Mon, 10 Feb 2014 17:49:17 +0100 |
parents | 63a4eb8bcd23 |
children | 8a9bb7821e28 |
rev | line source |
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0 | 1 /* |
7956 | 2 * Copyright (c) 1997, 2013, 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_METHODOOP_HPP |
26 #define SHARE_VM_OOPS_METHODOOP_HPP | |
27 | |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "code/compressedStream.hpp" | |
30 #include "compiler/oopMap.hpp" | |
31 #include "interpreter/invocationCounter.hpp" | |
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32 #include "oops/annotations.hpp" |
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33 #include "oops/constantPool.hpp" |
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34 #include "oops/methodCounters.hpp" |
1972 | 35 #include "oops/instanceKlass.hpp" |
36 #include "oops/oop.hpp" | |
37 #include "oops/typeArrayOop.hpp" | |
38 #include "utilities/accessFlags.hpp" | |
39 #include "utilities/growableArray.hpp" | |
40 | |
14309 | 41 // A Method represents a Java method. |
0 | 42 // |
43 // Memory layout (each line represents a word). Note that most applications load thousands of methods, | |
44 // so keeping the size of this structure small has a big impact on footprint. | |
45 // | |
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46 // The actual bytecodes are inlined after the end of the Method struct. |
0 | 47 // |
48 // There are bits in the access_flags telling whether inlined tables are present. | |
49 // Note that accessing the line number and local variable tables is not performance critical at all. | |
50 // Accessing the checked exceptions table is used by reflection, so we put that last to make access | |
51 // to it fast. | |
52 // | |
53 // The line number table is compressed and inlined following the byte codes. It is found as the first | |
54 // byte following the byte codes. The checked exceptions table and the local variable table are inlined | |
55 // after the line number table, and indexed from the end of the method. We do not compress the checked | |
56 // exceptions table since the average length is less than 2, and do not bother to compress the local | |
57 // variable table either since it is mostly absent. | |
58 // | |
59 // Note that native_function and signature_handler has to be at fixed offsets (required by the interpreter) | |
60 // | |
61 // |------------------------------------------------------| | |
62 // | header | | |
63 // | klass | | |
64 // |------------------------------------------------------| | |
14309 | 65 // | ConstMethod* (metadata) | |
0 | 66 // |------------------------------------------------------| |
14309 | 67 // | MethodData* (metadata) | |
68 // | MethodCounters | | |
0 | 69 // |------------------------------------------------------| |
70 // | access_flags | | |
71 // | vtable_index | | |
72 // |------------------------------------------------------| | |
73 // | result_index (C++ interpreter only) | | |
74 // |------------------------------------------------------| | |
14309 | 75 // | method_size | intrinsic_id | flags | |
0 | 76 // |------------------------------------------------------| |
77 // | code (pointer) | | |
78 // | i2i (pointer) | | |
79 // | adapter (pointer) | | |
80 // | from_compiled_entry (pointer) | | |
81 // | from_interpreted_entry (pointer) | | |
82 // |------------------------------------------------------| | |
83 // | native_function (present only if native) | | |
84 // | signature_handler (present only if native) | | |
85 // |------------------------------------------------------| | |
86 | |
87 | |
88 class CheckedExceptionElement; | |
89 class LocalVariableTableElement; | |
90 class AdapterHandlerEntry; | |
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91 class MethodData; |
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92 class MethodCounters; |
6934 | 93 class ConstMethod; |
8031 | 94 class InlineTableSizes; |
7956 | 95 class KlassSizeStats; |
0 | 96 |
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97 class Method : public Metadata { |
0 | 98 friend class VMStructs; |
99 private: | |
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100 ConstMethod* _constMethod; // Method read-only data. |
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101 MethodData* _method_data; |
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102 MethodCounters* _method_counters; |
0 | 103 AccessFlags _access_flags; // Access flags |
104 int _vtable_index; // vtable index of this method (see VtableIndexFlag) | |
105 // note: can have vtables with >2**16 elements (because of inheritance) | |
106 #ifdef CC_INTERP | |
107 int _result_index; // C++ interpreter needs for converting results to/from stack | |
108 #endif | |
109 u2 _method_size; // size of this object | |
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110 u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none) |
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111 u1 _jfr_towrite : 1, // Flags |
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112 _caller_sensitive : 1, |
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113 _force_inline : 1, |
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114 _hidden : 1, |
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115 _dont_inline : 1, |
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116 : 3; |
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117 |
0 | 118 #ifndef PRODUCT |
119 int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging) | |
120 #endif | |
121 // Entry point for calling both from and to the interpreter. | |
122 address _i2i_entry; // All-args-on-stack calling convention | |
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123 // Adapter blob (i2c/c2i) for this Method*. Set once when method is linked. |
0 | 124 AdapterHandlerEntry* _adapter; |
125 // Entry point for calling from compiled code, to compiled code if it exists | |
126 // or else the interpreter. | |
127 volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry() | |
128 // The entry point for calling both from and to compiled code is | |
129 // "_code->entry_point()". Because of tiered compilation and de-opt, this | |
130 // field can come and go. It can transition from NULL to not-null at any | |
131 // time (whenever a compile completes). It can transition from not-null to | |
132 // NULL only at safepoints (because of a de-opt). | |
133 nmethod* volatile _code; // Points to the corresponding piece of native code | |
134 volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry | |
135 | |
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136 // Constructor |
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137 Method(ConstMethod* xconst, AccessFlags access_flags, int size); |
0 | 138 public: |
6934 | 139 |
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140 static Method* allocate(ClassLoaderData* loader_data, |
6934 | 141 int byte_code_size, |
142 AccessFlags access_flags, | |
8031 | 143 InlineTableSizes* sizes, |
6934 | 144 ConstMethod::MethodType method_type, |
145 TRAPS); | |
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146 |
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147 // CDS and vtbl checking can create an empty Method to get vtbl pointer. |
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148 Method(){} |
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149 |
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150 // The Method vtable is restored by this call when the Method is in the |
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151 // shared archive. See patch_klass_vtables() in metaspaceShared.cpp for |
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152 // all the gory details. SA, dtrace and pstack helpers distinguish metadata |
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153 // by their vtable. |
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154 void restore_vtable() { guarantee(is_method(), "vtable restored by this call"); } |
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155 bool is_method() const volatile { return true; } |
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156 |
0 | 157 // accessors for instance variables |
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158 |
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159 ConstMethod* constMethod() const { return _constMethod; } |
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160 void set_constMethod(ConstMethod* xconst) { _constMethod = xconst; } |
0 | 161 |
162 | |
163 static address make_adapters(methodHandle mh, TRAPS); | |
164 volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); } | |
165 volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); } | |
166 | |
167 // access flag | |
168 AccessFlags access_flags() const { return _access_flags; } | |
169 void set_access_flags(AccessFlags flags) { _access_flags = flags; } | |
170 | |
171 // name | |
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172 Symbol* name() const { return constants()->symbol_at(name_index()); } |
0 | 173 int name_index() const { return constMethod()->name_index(); } |
174 void set_name_index(int index) { constMethod()->set_name_index(index); } | |
175 | |
176 // signature | |
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177 Symbol* signature() const { return constants()->symbol_at(signature_index()); } |
0 | 178 int signature_index() const { return constMethod()->signature_index(); } |
179 void set_signature_index(int index) { constMethod()->set_signature_index(index); } | |
180 | |
181 // generics support | |
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182 Symbol* generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? constants()->symbol_at(idx) : (Symbol*)NULL); } |
0 | 183 int generic_signature_index() const { return constMethod()->generic_signature_index(); } |
184 void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); } | |
185 | |
186 // annotations support | |
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187 AnnotationArray* annotations() const { |
8031 | 188 return constMethod()->method_annotations(); |
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189 } |
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190 AnnotationArray* parameter_annotations() const { |
8031 | 191 return constMethod()->parameter_annotations(); |
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192 } |
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193 AnnotationArray* annotation_default() const { |
8031 | 194 return constMethod()->default_annotations(); |
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195 } |
8031 | 196 AnnotationArray* type_annotations() const { |
197 return constMethod()->type_annotations(); | |
198 } | |
0 | 199 |
200 #ifdef CC_INTERP | |
201 void set_result_index(BasicType type); | |
202 int result_index() { return _result_index; } | |
203 #endif | |
204 | |
205 // Helper routine: get klass name + "." + method name + signature as | |
206 // C string, for the purpose of providing more useful NoSuchMethodErrors | |
207 // and fatal error handling. The string is allocated in resource | |
208 // area if a buffer is not provided by the caller. | |
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209 char* name_and_sig_as_C_string() const; |
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210 char* name_and_sig_as_C_string(char* buf, int size) const; |
0 | 211 |
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212 // Static routine in the situations we don't have a Method* |
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213 static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature); |
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214 static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size); |
0 | 215 |
2142 | 216 Bytecodes::Code java_code_at(int bci) const { |
217 return Bytecodes::java_code_at(this, bcp_from(bci)); | |
218 } | |
219 Bytecodes::Code code_at(int bci) const { | |
220 return Bytecodes::code_at(this, bcp_from(bci)); | |
221 } | |
222 | |
0 | 223 // JVMTI breakpoints |
2142 | 224 Bytecodes::Code orig_bytecode_at(int bci) const; |
0 | 225 void set_orig_bytecode_at(int bci, Bytecodes::Code code); |
226 void set_breakpoint(int bci); | |
227 void clear_breakpoint(int bci); | |
228 void clear_all_breakpoints(); | |
229 // Tracking number of breakpoints, for fullspeed debugging. | |
230 // Only mutated by VM thread. | |
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231 u2 number_of_breakpoints() const { |
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232 if (method_counters() == NULL) { |
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233 return 0; |
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234 } else { |
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235 return method_counters()->number_of_breakpoints(); |
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236 } |
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237 } |
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238 void incr_number_of_breakpoints(TRAPS) { |
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239 MethodCounters* mcs = get_method_counters(CHECK); |
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240 if (mcs != NULL) { |
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241 mcs->incr_number_of_breakpoints(); |
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242 } |
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243 } |
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244 void decr_number_of_breakpoints(TRAPS) { |
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245 MethodCounters* mcs = get_method_counters(CHECK); |
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246 if (mcs != NULL) { |
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247 mcs->decr_number_of_breakpoints(); |
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248 } |
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249 } |
0 | 250 // Initialization only |
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251 void clear_number_of_breakpoints() { |
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252 if (method_counters() != NULL) { |
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253 method_counters()->clear_number_of_breakpoints(); |
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254 } |
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255 } |
0 | 256 |
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257 // index into InstanceKlass methods() array |
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258 // note: also used by jfr |
0 | 259 u2 method_idnum() const { return constMethod()->method_idnum(); } |
260 void set_method_idnum(u2 idnum) { constMethod()->set_method_idnum(idnum); } | |
261 | |
262 // code size | |
263 int code_size() const { return constMethod()->code_size(); } | |
264 | |
265 // method size | |
266 int method_size() const { return _method_size; } | |
267 void set_method_size(int size) { | |
268 assert(0 <= size && size < (1 << 16), "invalid method size"); | |
269 _method_size = size; | |
270 } | |
271 | |
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272 // constant pool for Klass* holding this method |
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273 ConstantPool* constants() const { return constMethod()->constants(); } |
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274 void set_constants(ConstantPool* c) { constMethod()->set_constants(c); } |
0 | 275 |
276 // max stack | |
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277 // return original max stack size for method verification |
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278 int verifier_max_stack() const { return constMethod()->max_stack(); } |
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279 int max_stack() const { return constMethod()->max_stack() + extra_stack_entries(); } |
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280 void set_max_stack(int size) { constMethod()->set_max_stack(size); } |
0 | 281 |
282 // max locals | |
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283 int max_locals() const { return constMethod()->max_locals(); } |
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284 void set_max_locals(int size) { constMethod()->set_max_locals(size); } |
1783 | 285 |
286 int highest_comp_level() const; | |
287 void set_highest_comp_level(int level); | |
288 int highest_osr_comp_level() const; | |
289 void set_highest_osr_comp_level(int level); | |
0 | 290 |
291 // Count of times method was exited via exception while interpreting | |
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292 void interpreter_throwout_increment(TRAPS) { |
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293 MethodCounters* mcs = get_method_counters(CHECK); |
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294 if (mcs != NULL) { |
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295 mcs->interpreter_throwout_increment(); |
0 | 296 } |
297 } | |
298 | |
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299 int interpreter_throwout_count() const { |
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300 if (method_counters() == NULL) { |
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301 return 0; |
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302 } else { |
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303 return method_counters()->interpreter_throwout_count(); |
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304 } |
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305 } |
0 | 306 |
307 // size of parameters | |
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308 int size_of_parameters() const { return constMethod()->size_of_parameters(); } |
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309 void set_size_of_parameters(int size) { constMethod()->set_size_of_parameters(size); } |
0 | 310 |
311 bool has_stackmap_table() const { | |
312 return constMethod()->has_stackmap_table(); | |
313 } | |
314 | |
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315 Array<u1>* stackmap_data() const { |
0 | 316 return constMethod()->stackmap_data(); |
317 } | |
318 | |
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319 void set_stackmap_data(Array<u1>* sd) { |
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320 constMethod()->set_stackmap_data(sd); |
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321 } |
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322 |
0 | 323 // exception handler table |
324 bool has_exception_handler() const | |
325 { return constMethod()->has_exception_handler(); } | |
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326 int exception_table_length() const |
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327 { return constMethod()->exception_table_length(); } |
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328 ExceptionTableElement* exception_table_start() const |
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329 { return constMethod()->exception_table_start(); } |
0 | 330 |
331 // Finds the first entry point bci of an exception handler for an | |
332 // exception of klass ex_klass thrown at throw_bci. A value of NULL | |
333 // for ex_klass indicates that the exception klass is not known; in | |
334 // this case it matches any constraint class. Returns -1 if the | |
335 // exception cannot be handled in this method. The handler | |
336 // constraint classes are loaded if necessary. Note that this may | |
337 // throw an exception if loading of the constraint classes causes | |
338 // an IllegalAccessError (bugid 4307310) or an OutOfMemoryError. | |
339 // If an exception is thrown, returns the bci of the | |
340 // exception handler which caused the exception to be thrown, which | |
341 // is needed for proper retries. See, for example, | |
342 // InterpreterRuntime::exception_handler_for_exception. | |
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343 static int fast_exception_handler_bci_for(methodHandle mh, KlassHandle ex_klass, int throw_bci, TRAPS); |
0 | 344 |
345 // method data access | |
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346 MethodData* method_data() const { |
0 | 347 return _method_data; |
348 } | |
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349 |
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350 void set_method_data(MethodData* data) { |
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351 _method_data = data; |
0 | 352 } |
353 | |
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354 MethodCounters* method_counters() const { |
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355 return _method_counters; |
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356 } |
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357 |
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358 |
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359 void set_method_counters(MethodCounters* counters) { |
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360 _method_counters = counters; |
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361 } |
1783 | 362 |
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363 #ifdef TIERED |
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364 // We are reusing interpreter_invocation_count as a holder for the previous event count! |
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365 // We can do that since interpreter_invocation_count is not used in tiered. |
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366 int prev_event_count() const { |
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367 if (method_counters() == NULL) { |
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368 return 0; |
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369 } else { |
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370 return method_counters()->interpreter_invocation_count(); |
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371 } |
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372 } |
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373 void set_prev_event_count(int count, TRAPS) { |
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374 MethodCounters* mcs = get_method_counters(CHECK); |
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375 if (mcs != NULL) { |
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376 mcs->set_interpreter_invocation_count(count); |
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377 } |
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378 } |
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379 jlong prev_time() const { |
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380 return method_counters() == NULL ? 0 : method_counters()->prev_time(); |
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381 } |
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382 void set_prev_time(jlong time, TRAPS) { |
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383 MethodCounters* mcs = get_method_counters(CHECK); |
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384 if (mcs != NULL) { |
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385 mcs->set_prev_time(time); |
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386 } |
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387 } |
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388 float rate() const { |
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389 return method_counters() == NULL ? 0 : method_counters()->rate(); |
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390 } |
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391 void set_rate(float rate, TRAPS) { |
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392 MethodCounters* mcs = get_method_counters(CHECK); |
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393 if (mcs != NULL) { |
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394 mcs->set_rate(rate); |
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395 } |
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396 } |
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397 #endif |
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398 |
1783 | 399 int invocation_count(); |
400 int backedge_count(); | |
401 | |
402 bool was_executed_more_than(int n); | |
403 bool was_never_executed() { return !was_executed_more_than(0); } | |
0 | 404 |
405 static void build_interpreter_method_data(methodHandle method, TRAPS); | |
406 | |
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407 static MethodCounters* build_method_counters(Method* m, TRAPS); |
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408 |
1783 | 409 int interpreter_invocation_count() { |
410 if (TieredCompilation) return invocation_count(); | |
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411 else return (method_counters() == NULL) ? 0 : |
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412 method_counters()->interpreter_invocation_count(); |
1783 | 413 } |
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414 int increment_interpreter_invocation_count(TRAPS) { |
1783 | 415 if (TieredCompilation) ShouldNotReachHere(); |
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416 MethodCounters* mcs = get_method_counters(CHECK_0); |
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417 return (mcs == NULL) ? 0 : mcs->increment_interpreter_invocation_count(); |
1783 | 418 } |
0 | 419 |
420 #ifndef PRODUCT | |
1783 | 421 int compiled_invocation_count() const { return _compiled_invocation_count; } |
0 | 422 void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; } |
423 #endif // not PRODUCT | |
424 | |
605 | 425 // Clear (non-shared space) pointers which could not be relevant |
0 | 426 // if this (shared) method were mapped into another JVM. |
427 void remove_unshareable_info(); | |
428 | |
429 // nmethod/verified compiler entry | |
430 address verified_code_entry(); | |
431 bool check_code() const; // Not inline to avoid circular ref | |
432 nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); } | |
433 void clear_code(); // Clear out any compiled code | |
1202 | 434 static void set_code(methodHandle mh, nmethod* code); |
0 | 435 void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; } |
436 address get_i2c_entry(); | |
437 address get_c2i_entry(); | |
438 address get_c2i_unverified_entry(); | |
439 AdapterHandlerEntry* adapter() { return _adapter; } | |
440 // setup entry points | |
441 void link_method(methodHandle method, TRAPS); | |
442 // clear entry points. Used by sharing code | |
443 void unlink_method(); | |
444 | |
445 // vtable index | |
446 enum VtableIndexFlag { | |
447 // Valid vtable indexes are non-negative (>= 0). | |
448 // These few negative values are used as sentinels. | |
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449 itable_index_max = -10, // first itable index, growing downward |
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450 pending_itable_index = -9, // itable index will be assigned |
0 | 451 invalid_vtable_index = -4, // distinct from any valid vtable index |
452 garbage_vtable_index = -3, // not yet linked; no vtable layout yet | |
453 nonvirtual_vtable_index = -2 // there is no need for vtable dispatch | |
454 // 6330203 Note: Do not use -1, which was overloaded with many meanings. | |
455 }; | |
456 DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; }) | |
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457 bool has_vtable_index() const { return _vtable_index >= 0; } |
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458 int vtable_index() const { return _vtable_index; } |
0 | 459 void set_vtable_index(int index) { _vtable_index = index; } |
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460 DEBUG_ONLY(bool valid_itable_index() const { return _vtable_index <= pending_itable_index; }) |
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461 bool has_itable_index() const { return _vtable_index <= itable_index_max; } |
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462 int itable_index() const { assert(valid_itable_index(), ""); |
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463 return itable_index_max - _vtable_index; } |
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464 void set_itable_index(int index) { _vtable_index = itable_index_max - index; assert(valid_itable_index(), ""); } |
0 | 465 |
466 // interpreter entry | |
467 address interpreter_entry() const { return _i2i_entry; } | |
468 // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry | |
469 void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; } | |
470 | |
471 // native function (used for native methods only) | |
472 enum { | |
473 native_bind_event_is_interesting = true | |
474 }; | |
475 address native_function() const { return *(native_function_addr()); } | |
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476 address critical_native_function(); |
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477 |
0 | 478 // Must specify a real function (not NULL). |
479 // Use clear_native_function() to unregister. | |
480 void set_native_function(address function, bool post_event_flag); | |
481 bool has_native_function() const; | |
482 void clear_native_function(); | |
483 | |
484 // signature handler (used for native methods only) | |
485 address signature_handler() const { return *(signature_handler_addr()); } | |
486 void set_signature_handler(address handler); | |
487 | |
488 // Interpreter oopmap support | |
489 void mask_for(int bci, InterpreterOopMap* mask); | |
490 | |
491 #ifndef PRODUCT | |
492 // operations on invocation counter | |
1783 | 493 void print_invocation_count(); |
0 | 494 #endif |
495 | |
496 // byte codes | |
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497 void set_code(address code) { return constMethod()->set_code(code); } |
0 | 498 address code_base() const { return constMethod()->code_base(); } |
499 bool contains(address bcp) const { return constMethod()->contains(bcp); } | |
500 | |
501 // prints byte codes | |
502 void print_codes() const { print_codes_on(tty); } | |
503 void print_codes_on(outputStream* st) const PRODUCT_RETURN; | |
504 void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN; | |
505 | |
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506 // method parameters |
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507 bool has_method_parameters() const |
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508 { return constMethod()->has_method_parameters(); } |
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509 int method_parameters_length() const |
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510 { return constMethod()->method_parameters_length(); } |
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511 MethodParametersElement* method_parameters_start() const |
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512 { return constMethod()->method_parameters_start(); } |
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513 |
0 | 514 // checked exceptions |
515 int checked_exceptions_length() const | |
516 { return constMethod()->checked_exceptions_length(); } | |
517 CheckedExceptionElement* checked_exceptions_start() const | |
518 { return constMethod()->checked_exceptions_start(); } | |
519 | |
520 // localvariable table | |
521 bool has_localvariable_table() const | |
522 { return constMethod()->has_localvariable_table(); } | |
523 int localvariable_table_length() const | |
524 { return constMethod()->localvariable_table_length(); } | |
525 LocalVariableTableElement* localvariable_table_start() const | |
526 { return constMethod()->localvariable_table_start(); } | |
527 | |
528 bool has_linenumber_table() const | |
529 { return constMethod()->has_linenumber_table(); } | |
530 u_char* compressed_linenumber_table() const | |
531 { return constMethod()->compressed_linenumber_table(); } | |
532 | |
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533 // method holder (the Klass* holding this method) |
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534 InstanceKlass* method_holder() const { return constants()->pool_holder(); } |
0 | 535 |
536 void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments) | |
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537 Symbol* klass_name() const; // returns the name of the method holder |
0 | 538 BasicType result_type() const; // type of the method result |
539 int result_type_index() const; // type index of the method result | |
540 bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); } | |
541 bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); } | |
542 | |
543 // Checked exceptions thrown by this method (resolved to mirrors) | |
544 objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); } | |
545 | |
546 // Access flags | |
547 bool is_public() const { return access_flags().is_public(); } | |
548 bool is_private() const { return access_flags().is_private(); } | |
549 bool is_protected() const { return access_flags().is_protected(); } | |
550 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } | |
551 bool is_static() const { return access_flags().is_static(); } | |
552 bool is_final() const { return access_flags().is_final(); } | |
553 bool is_synchronized() const { return access_flags().is_synchronized();} | |
554 bool is_native() const { return access_flags().is_native(); } | |
555 bool is_abstract() const { return access_flags().is_abstract(); } | |
556 bool is_strict() const { return access_flags().is_strict(); } | |
557 bool is_synthetic() const { return access_flags().is_synthetic(); } | |
558 | |
559 // returns true if contains only return operation | |
560 bool is_empty_method() const; | |
561 | |
562 // returns true if this is a vanilla constructor | |
563 bool is_vanilla_constructor() const; | |
564 | |
565 // checks method and its method holder | |
566 bool is_final_method() const; | |
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567 bool is_final_method(AccessFlags class_access_flags) const; |
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568 bool is_default_method() const; |
0 | 569 |
570 // true if method needs no dynamic dispatch (final and/or no vtable entry) | |
571 bool can_be_statically_bound() const; | |
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572 bool can_be_statically_bound(AccessFlags class_access_flags) const; |
0 | 573 |
574 // returns true if the method has any backward branches. | |
575 bool has_loops() { | |
576 return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag(); | |
577 }; | |
578 | |
579 bool compute_has_loops_flag(); | |
580 | |
581 bool has_jsrs() { | |
582 return access_flags().has_jsrs(); | |
583 }; | |
584 void set_has_jsrs() { | |
585 _access_flags.set_has_jsrs(); | |
586 } | |
587 | |
588 // returns true if the method has any monitors. | |
589 bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); } | |
590 bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); } | |
591 | |
592 void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); } | |
593 | |
594 // monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes | |
595 // propererly nest in the method. It might return false, even though they actually nest properly, since the info. | |
596 // has not been computed yet. | |
597 bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); } | |
598 void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); } | |
599 | |
600 // returns true if the method is an accessor function (setter/getter). | |
601 bool is_accessor() const; | |
602 | |
603 // returns true if the method is an initializer (<init> or <clinit>). | |
604 bool is_initializer() const; | |
605 | |
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606 // returns true if the method is static OR if the classfile version < 51 |
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607 bool has_valid_initializer_flags() const; |
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608 |
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609 // returns true if the method name is <clinit> and the method has |
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610 // valid static initializer flags. |
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611 bool is_static_initializer() const; |
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612 |
0 | 613 // compiled code support |
614 // NOTE: code() is inherently racy as deopt can be clearing code | |
615 // simultaneously. Use with caution. | |
616 bool has_compiled_code() const { return code() != NULL; } | |
617 | |
618 // sizing | |
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619 static int header_size() { return sizeof(Method)/HeapWordSize; } |
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620 static int size(bool is_native); |
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621 int size() const { return method_size(); } |
7956 | 622 #if INCLUDE_SERVICES |
623 void collect_statistics(KlassSizeStats *sz) const; | |
624 #endif | |
0 | 625 |
626 // interpreter support | |
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627 static ByteSize const_offset() { return byte_offset_of(Method, _constMethod ); } |
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628 static ByteSize access_flags_offset() { return byte_offset_of(Method, _access_flags ); } |
0 | 629 #ifdef CC_INTERP |
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630 static ByteSize result_index_offset() { return byte_offset_of(Method, _result_index ); } |
0 | 631 #endif /* CC_INTERP */ |
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632 static ByteSize from_compiled_offset() { return byte_offset_of(Method, _from_compiled_entry); } |
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633 static ByteSize code_offset() { return byte_offset_of(Method, _code); } |
0 | 634 static ByteSize method_data_offset() { |
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635 return byte_offset_of(Method, _method_data); |
0 | 636 } |
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637 static ByteSize method_counters_offset() { |
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638 return byte_offset_of(Method, _method_counters); |
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639 } |
0 | 640 #ifndef PRODUCT |
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641 static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(Method, _compiled_invocation_count); } |
0 | 642 #endif // not PRODUCT |
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643 static ByteSize native_function_offset() { return in_ByteSize(sizeof(Method)); } |
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644 static ByteSize from_interpreted_offset() { return byte_offset_of(Method, _from_interpreted_entry ); } |
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645 static ByteSize interpreter_entry_offset() { return byte_offset_of(Method, _i2i_entry ); } |
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646 static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(Method) + wordSize); } |
0 | 647 |
648 // for code generation | |
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649 static int method_data_offset_in_bytes() { return offset_of(Method, _method_data); } |
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650 static int intrinsic_id_offset_in_bytes() { return offset_of(Method, _intrinsic_id); } |
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651 static int intrinsic_id_size_in_bytes() { return sizeof(u1); } |
0 | 652 |
653 // Static methods that are used to implement member methods where an exposed this pointer | |
654 // is needed due to possible GCs | |
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655 static objArrayHandle resolved_checked_exceptions_impl(Method* this_oop, TRAPS); |
0 | 656 |
657 // Returns the byte code index from the byte code pointer | |
658 int bci_from(address bcp) const; | |
659 address bcp_from(int bci) const; | |
660 int validate_bci_from_bcx(intptr_t bcx) const; | |
661 | |
662 // Returns the line number for a bci if debugging information for the method is prowided, | |
663 // -1 is returned otherwise. | |
664 int line_number_from_bci(int bci) const; | |
665 | |
666 // Reflection support | |
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667 bool is_overridden_in(Klass* k) const; |
0 | 668 |
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669 // Stack walking support |
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670 bool is_ignored_by_security_stack_walk() const; |
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671 |
710 | 672 // JSR 292 support |
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673 bool is_method_handle_intrinsic() const; // MethodHandles::is_signature_polymorphic_intrinsic(intrinsic_id) |
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674 bool is_compiled_lambda_form() const; // intrinsic_id() == vmIntrinsics::_compiledLambdaForm |
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675 bool has_member_arg() const; // intrinsic_id() == vmIntrinsics::_linkToSpecial, etc. |
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676 static methodHandle make_method_handle_intrinsic(vmIntrinsics::ID iid, // _invokeBasic, _linkToVirtual |
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677 Symbol* signature, //anything at all |
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678 TRAPS); |
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679 static Klass* check_non_bcp_klass(Klass* klass); |
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680 |
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681 // How many extra stack entries for invokedynamic when it's enabled |
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682 static const int extra_stack_entries_for_jsr292 = 1; |
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683 |
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684 // this operates only on invoke methods: |
710 | 685 // presize interpreter frames for extra interpreter stack entries, if needed |
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686 // Account for the extra appendix argument for invokehandle/invokedynamic |
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687 static int extra_stack_entries() { return EnableInvokeDynamic ? extra_stack_entries_for_jsr292 : 0; } |
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688 static int extra_stack_words(); // = extra_stack_entries() * Interpreter::stackElementSize |
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689 |
0 | 690 // RedefineClasses() support: |
691 bool is_old() const { return access_flags().is_old(); } | |
692 void set_is_old() { _access_flags.set_is_old(); } | |
693 bool is_obsolete() const { return access_flags().is_obsolete(); } | |
694 void set_is_obsolete() { _access_flags.set_is_obsolete(); } | |
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695 bool on_stack() const { return access_flags().on_stack(); } |
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696 void set_on_stack(const bool value); |
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697 |
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698 // see the definition in Method*.cpp for the gory details |
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699 bool should_not_be_cached() const; |
0 | 700 |
701 // JVMTI Native method prefixing support: | |
702 bool is_prefixed_native() const { return access_flags().is_prefixed_native(); } | |
703 void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); } | |
704 | |
705 // Rewriting support | |
706 static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length, | |
707 u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS); | |
708 | |
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709 // jmethodID handling |
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710 // Because the useful life-span of a jmethodID cannot be determined, |
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711 // once created they are never reclaimed. The methods to which they refer, |
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712 // however, can be GC'ed away if the class is unloaded or if the method is |
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713 // made obsolete or deleted -- in these cases, the jmethodID |
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714 // refers to NULL (as is the case for any weak reference). |
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715 static jmethodID make_jmethod_id(ClassLoaderData* loader_data, Method* mh); |
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716 static void destroy_jmethod_id(ClassLoaderData* loader_data, jmethodID mid); |
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717 |
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718 // Use resolve_jmethod_id() in situations where the caller is expected |
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719 // to provide a valid jmethodID; the only sanity checks are in asserts; |
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720 // result guaranteed not to be NULL. |
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721 inline static Method* resolve_jmethod_id(jmethodID mid) { |
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722 assert(mid != NULL, "JNI method id should not be null"); |
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723 return *((Method**)mid); |
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724 } |
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725 |
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726 // Use checked_resolve_jmethod_id() in situations where the caller |
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727 // should provide a valid jmethodID, but might not. NULL is returned |
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728 // when the jmethodID does not refer to a valid method. |
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729 static Method* checked_resolve_jmethod_id(jmethodID mid); |
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730 |
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731 static void change_method_associated_with_jmethod_id(jmethodID old_jmid_ptr, Method* new_method); |
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732 static bool is_method_id(jmethodID mid); |
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733 |
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734 // Clear methods |
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735 static void clear_jmethod_ids(ClassLoaderData* loader_data); |
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736 static void print_jmethod_ids(ClassLoaderData* loader_data, outputStream* out) PRODUCT_RETURN; |
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737 |
0 | 738 // Get this method's jmethodID -- allocate if it doesn't exist |
739 jmethodID jmethod_id() { methodHandle this_h(this); | |
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740 return InstanceKlass::get_jmethod_id(method_holder(), this_h); } |
0 | 741 |
742 // Lookup the jmethodID for this method. Return NULL if not found. | |
743 // NOTE that this function can be called from a signal handler | |
744 // (see AsyncGetCallTrace support for Forte Analyzer) and this | |
745 // needs to be async-safe. No allocation should be done and | |
746 // so handles are not used to avoid deadlock. | |
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747 jmethodID find_jmethod_id_or_null() { return method_holder()->jmethod_id_or_null(this); } |
0 | 748 |
749 // Support for inlining of intrinsic methods | |
856
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750 vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; } |
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751 void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; } |
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752 |
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753 // Helper routines for intrinsic_id() and vmIntrinsics::method(). |
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754 void init_intrinsic_id(); // updates from _none if a match |
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755 static vmSymbols::SID klass_id_for_intrinsics(Klass* holder); |
0 | 756 |
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757 bool jfr_towrite() { return _jfr_towrite; } |
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758 void set_jfr_towrite(bool x) { _jfr_towrite = x; } |
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759 bool caller_sensitive() { return _caller_sensitive; } |
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760 void set_caller_sensitive(bool x) { _caller_sensitive = x; } |
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761 bool force_inline() { return _force_inline; } |
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762 void set_force_inline(bool x) { _force_inline = x; } |
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763 bool dont_inline() { return _dont_inline; } |
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764 void set_dont_inline(bool x) { _dont_inline = x; } |
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765 bool is_hidden() { return _hidden; } |
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766 void set_hidden(bool x) { _hidden = x; } |
6934 | 767 ConstMethod::MethodType method_type() const { |
768 return _constMethod->method_type(); | |
769 } | |
770 bool is_overpass() const { return method_type() == ConstMethod::OVERPASS; } | |
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771 |
0 | 772 // On-stack replacement support |
1783 | 773 bool has_osr_nmethod(int level, bool match_level) { |
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774 return method_holder()->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL; |
1783 | 775 } |
776 | |
777 nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) { | |
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778 return method_holder()->lookup_osr_nmethod(this, bci, level, match_level); |
1783 | 779 } |
0 | 780 |
781 // Inline cache support | |
782 void cleanup_inline_caches(); | |
783 | |
784 // Find if klass for method is loaded | |
785 bool is_klass_loaded_by_klass_index(int klass_index) const; | |
786 bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const; | |
787 | |
788 // Indicates whether compilation failed earlier for this method, or | |
789 // whether it is not compilable for another reason like having a | |
790 // breakpoint set in it. | |
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791 bool is_not_compilable(int comp_level = CompLevel_any) const; |
7998 | 792 void set_not_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL); |
1783 | 793 void set_not_compilable_quietly(int comp_level = CompLevel_all) { |
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794 set_not_compilable(comp_level, false); |
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795 } |
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796 bool is_not_osr_compilable(int comp_level = CompLevel_any) const; |
7998 | 797 void set_not_osr_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL); |
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798 void set_not_osr_compilable_quietly(int comp_level = CompLevel_all) { |
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799 set_not_osr_compilable(comp_level, false); |
1783 | 800 } |
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801 bool is_always_compilable() const; |
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802 |
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803 private: |
7998 | 804 void print_made_not_compilable(int comp_level, bool is_osr, bool report, const char* reason); |
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805 |
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806 public: |
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807 MethodCounters* get_method_counters(TRAPS) { |
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808 if (_method_counters == NULL) { |
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809 build_method_counters(this, CHECK_AND_CLEAR_NULL); |
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810 } |
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811 return _method_counters; |
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812 } |
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813 |
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814 bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); } |
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815 void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); } |
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816 void clear_not_c1_compilable() { _access_flags.clear_not_c1_compilable(); } |
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817 bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); } |
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818 void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); } |
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819 void clear_not_c2_compilable() { _access_flags.clear_not_c2_compilable(); } |
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820 |
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821 bool is_not_c1_osr_compilable() const { return is_not_c1_compilable(); } // don't waste an accessFlags bit |
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822 void set_not_c1_osr_compilable() { set_not_c1_compilable(); } // don't waste an accessFlags bit |
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823 void clear_not_c1_osr_compilable() { clear_not_c1_compilable(); } // don't waste an accessFlags bit |
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824 bool is_not_c2_osr_compilable() const { return access_flags().is_not_c2_osr_compilable(); } |
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825 void set_not_c2_osr_compilable() { _access_flags.set_not_c2_osr_compilable(); } |
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826 void clear_not_c2_osr_compilable() { _access_flags.clear_not_c2_osr_compilable(); } |
0 | 827 |
828 // Background compilation support | |
1783 | 829 bool queued_for_compilation() const { return access_flags().queued_for_compilation(); } |
830 void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); } | |
831 void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); } | |
0 | 832 |
833 // Resolve all classes in signature, return 'true' if successful | |
834 static bool load_signature_classes(methodHandle m, TRAPS); | |
835 | |
836 // Return if true if not all classes references in signature, including return type, has been loaded | |
837 static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS); | |
838 | |
839 // Printing | |
8021
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840 void print_short_name(outputStream* st = tty); // prints as klassname::methodname; Exposed so field engineers can debug VM |
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841 #if INCLUDE_JVMTI |
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842 void print_name(outputStream* st = tty); // prints as "virtual void foo(int)"; exposed for TraceRedefineClasses |
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843 #else |
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844 void print_name(outputStream* st = tty) PRODUCT_RETURN; // prints as "virtual void foo(int)" |
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845 #endif |
0 | 846 |
847 // Helper routine used for method sorting | |
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848 static void sort_methods(Array<Method*>* methods, bool idempotent = false, bool set_idnums = true); |
0 | 849 |
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850 // Deallocation function for redefine classes or if an error occurs |
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851 void deallocate_contents(ClassLoaderData* loader_data); |
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852 |
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853 // Printing |
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854 #ifndef PRODUCT |
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855 void print_on(outputStream* st) const; |
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856 #endif |
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857 void print_value_on(outputStream* st) const; |
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858 |
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859 const char* internal_name() const { return "{method}"; } |
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860 |
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861 // Check for valid method pointer |
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862 bool is_valid_method() const; |
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863 |
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864 // Verify |
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865 void verify() { verify_on(tty); } |
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866 void verify_on(outputStream* st); |
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867 |
0 | 868 private: |
869 | |
870 // Inlined elements | |
871 address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); } | |
872 address* signature_handler_addr() const { return native_function_addr() + 1; } | |
873 }; | |
874 | |
875 | |
876 // Utility class for compressing line number tables | |
877 | |
878 class CompressedLineNumberWriteStream: public CompressedWriteStream { | |
879 private: | |
880 int _bci; | |
881 int _line; | |
882 public: | |
883 // Constructor | |
884 CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {} | |
885 CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {} | |
886 | |
887 // Write (bci, line number) pair to stream | |
888 void write_pair_regular(int bci_delta, int line_delta); | |
889 | |
890 inline void write_pair_inline(int bci, int line) { | |
891 int bci_delta = bci - _bci; | |
892 int line_delta = line - _line; | |
893 _bci = bci; | |
894 _line = line; | |
895 // Skip (0,0) deltas - they do not add information and conflict with terminator. | |
896 if (bci_delta == 0 && line_delta == 0) return; | |
897 // Check if bci is 5-bit and line number 3-bit unsigned. | |
898 if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) { | |
899 // Compress into single byte. | |
900 jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta; | |
901 // Check that value doesn't match escape character. | |
902 if (value != 0xFF) { | |
903 write_byte(value); | |
904 return; | |
905 } | |
906 } | |
907 write_pair_regular(bci_delta, line_delta); | |
908 } | |
909 | |
910 // Windows AMD64 + Apr 2005 PSDK with /O2 generates bad code for write_pair. | |
911 // Disabling optimization doesn't work for methods in header files | |
912 // so we force it to call through the non-optimized version in the .cpp. | |
913 // It's gross, but it's the only way we can ensure that all callers are | |
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914 // fixed. _MSC_VER is defined by the windows compiler |
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915 #if defined(_M_AMD64) && _MSC_VER >= 1400 |
0 | 916 void write_pair(int bci, int line); |
917 #else | |
918 void write_pair(int bci, int line) { write_pair_inline(bci, line); } | |
919 #endif | |
920 | |
921 // Write end-of-stream marker | |
922 void write_terminator() { write_byte(0); } | |
923 }; | |
924 | |
925 | |
926 // Utility class for decompressing line number tables | |
927 | |
928 class CompressedLineNumberReadStream: public CompressedReadStream { | |
929 private: | |
930 int _bci; | |
931 int _line; | |
932 public: | |
933 // Constructor | |
934 CompressedLineNumberReadStream(u_char* buffer); | |
935 // Read (bci, line number) pair from stream. Returns false at end-of-stream. | |
936 bool read_pair(); | |
937 // Accessing bci and line number (after calling read_pair) | |
938 int bci() const { return _bci; } | |
939 int line() const { return _line; } | |
940 }; | |
941 | |
942 | |
943 /// Fast Breakpoints. | |
944 | |
945 // If this structure gets more complicated (because bpts get numerous), | |
946 // move it into its own header. | |
947 | |
948 // There is presently no provision for concurrent access | |
949 // to breakpoint lists, which is only OK for JVMTI because | |
950 // breakpoints are written only at safepoints, and are read | |
951 // concurrently only outside of safepoints. | |
952 | |
6197 | 953 class BreakpointInfo : public CHeapObj<mtClass> { |
0 | 954 friend class VMStructs; |
955 private: | |
956 Bytecodes::Code _orig_bytecode; | |
957 int _bci; | |
958 u2 _name_index; // of method | |
959 u2 _signature_index; // of method | |
960 BreakpointInfo* _next; // simple storage allocation | |
961 | |
962 public: | |
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963 BreakpointInfo(Method* m, int bci); |
0 | 964 |
965 // accessors | |
966 Bytecodes::Code orig_bytecode() { return _orig_bytecode; } | |
967 void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; } | |
968 int bci() { return _bci; } | |
969 | |
970 BreakpointInfo* next() const { return _next; } | |
971 void set_next(BreakpointInfo* n) { _next = n; } | |
972 | |
973 // helps for searchers | |
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974 bool match(const Method* m, int bci) { |
0 | 975 return bci == _bci && match(m); |
976 } | |
977 | |
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978 bool match(const Method* m) { |
0 | 979 return _name_index == m->name_index() && |
980 _signature_index == m->signature_index(); | |
981 } | |
982 | |
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983 void set(Method* method); |
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984 void clear(Method* method); |
0 | 985 }; |
1972 | 986 |
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987 // Utility class for access exception handlers |
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988 class ExceptionTable : public StackObj { |
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989 private: |
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990 ExceptionTableElement* _table; |
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991 u2 _length; |
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992 |
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993 public: |
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994 ExceptionTable(const Method* m) { |
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995 if (m->has_exception_handler()) { |
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996 _table = m->exception_table_start(); |
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997 _length = m->exception_table_length(); |
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998 } else { |
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999 _table = NULL; |
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1000 _length = 0; |
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1001 } |
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1002 } |
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1003 |
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1004 int length() const { |
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1005 return _length; |
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1006 } |
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1007 |
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1008 u2 start_pc(int idx) const { |
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1009 assert(idx < _length, "out of bounds"); |
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1010 return _table[idx].start_pc; |
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1011 } |
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1012 |
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1013 void set_start_pc(int idx, u2 value) { |
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1014 assert(idx < _length, "out of bounds"); |
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1015 _table[idx].start_pc = value; |
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1016 } |
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1017 |
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1018 u2 end_pc(int idx) const { |
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1019 assert(idx < _length, "out of bounds"); |
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1020 return _table[idx].end_pc; |
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1021 } |
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1022 |
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1023 void set_end_pc(int idx, u2 value) { |
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1024 assert(idx < _length, "out of bounds"); |
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1025 _table[idx].end_pc = value; |
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1026 } |
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1027 |
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1028 u2 handler_pc(int idx) const { |
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1029 assert(idx < _length, "out of bounds"); |
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1030 return _table[idx].handler_pc; |
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1031 } |
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1032 |
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1033 void set_handler_pc(int idx, u2 value) { |
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1034 assert(idx < _length, "out of bounds"); |
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1035 _table[idx].handler_pc = value; |
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1036 } |
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1037 |
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1038 u2 catch_type_index(int idx) const { |
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1039 assert(idx < _length, "out of bounds"); |
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1040 return _table[idx].catch_type_index; |
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1041 } |
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1042 |
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1043 void set_catch_type_index(int idx, u2 value) { |
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1044 assert(idx < _length, "out of bounds"); |
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1045 _table[idx].catch_type_index = value; |
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1046 } |
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1047 }; |
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1048 |
1972 | 1049 #endif // SHARE_VM_OOPS_METHODOOP_HPP |