Mercurial > hg > graal-compiler
annotate src/share/vm/oops/method.hpp @ 10179:a08c80e9e1e5
8012687: Remove unused is_root checks and closures
Reviewed-by: tschatzl, jmasa
author | stefank |
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date | Mon, 22 Apr 2013 20:27:36 +0200 |
parents | 8df6ddda8090 |
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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 | |
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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 // | |
46 // We put all oops and method_size first for better gc cache locality. | |
47 // | |
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48 // The actual bytecodes are inlined after the end of the Method struct. |
0 | 49 // |
50 // There are bits in the access_flags telling whether inlined tables are present. | |
51 // Note that accessing the line number and local variable tables is not performance critical at all. | |
52 // Accessing the checked exceptions table is used by reflection, so we put that last to make access | |
53 // to it fast. | |
54 // | |
55 // The line number table is compressed and inlined following the byte codes. It is found as the first | |
56 // byte following the byte codes. The checked exceptions table and the local variable table are inlined | |
57 // after the line number table, and indexed from the end of the method. We do not compress the checked | |
58 // exceptions table since the average length is less than 2, and do not bother to compress the local | |
59 // variable table either since it is mostly absent. | |
60 // | |
61 // Note that native_function and signature_handler has to be at fixed offsets (required by the interpreter) | |
62 // | |
63 // |------------------------------------------------------| | |
64 // | header | | |
65 // | klass | | |
66 // |------------------------------------------------------| | |
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67 // | ConstMethod* (oop) | |
0 | 68 // |------------------------------------------------------| |
69 // | methodData (oop) | | |
70 // | interp_invocation_count | | |
71 // |------------------------------------------------------| | |
72 // | access_flags | | |
73 // | vtable_index | | |
74 // |------------------------------------------------------| | |
75 // | result_index (C++ interpreter only) | | |
76 // |------------------------------------------------------| | |
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77 // | method_size | intrinsic_id| flags | |
0 | 78 // |------------------------------------------------------| |
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79 // | throwout_count | num_breakpoints | |
0 | 80 // |------------------------------------------------------| |
81 // | invocation_counter | | |
82 // | backedge_counter | | |
83 // |------------------------------------------------------| | |
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84 // | prev_time (tiered only, 64 bit wide) | |
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85 // | | |
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86 // |------------------------------------------------------| |
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87 // | rate (tiered) | |
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88 // |------------------------------------------------------| |
0 | 89 // | code (pointer) | |
90 // | i2i (pointer) | | |
91 // | adapter (pointer) | | |
92 // | from_compiled_entry (pointer) | | |
93 // | from_interpreted_entry (pointer) | | |
94 // |------------------------------------------------------| | |
95 // | native_function (present only if native) | | |
96 // | signature_handler (present only if native) | | |
97 // |------------------------------------------------------| | |
98 | |
99 | |
100 class CheckedExceptionElement; | |
101 class LocalVariableTableElement; | |
102 class AdapterHandlerEntry; | |
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103 class MethodData; |
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104 class MethodCounters; |
6934 | 105 class ConstMethod; |
8031 | 106 class InlineTableSizes; |
7956 | 107 class KlassSizeStats; |
0 | 108 |
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109 class Method : public Metadata { |
0 | 110 friend class VMStructs; |
111 private: | |
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112 ConstMethod* _constMethod; // Method read-only data. |
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113 MethodData* _method_data; |
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114 MethodCounters* _method_counters; |
0 | 115 AccessFlags _access_flags; // Access flags |
116 int _vtable_index; // vtable index of this method (see VtableIndexFlag) | |
117 // note: can have vtables with >2**16 elements (because of inheritance) | |
118 #ifdef CC_INTERP | |
119 int _result_index; // C++ interpreter needs for converting results to/from stack | |
120 #endif | |
121 u2 _method_size; // size of this object | |
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122 u1 _intrinsic_id; // vmSymbols::intrinsic_id (0 == _none) |
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123 u1 _jfr_towrite : 1, // Flags |
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124 _caller_sensitive : 1, |
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125 _force_inline : 1, |
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126 _hidden : 1, |
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127 _dont_inline : 1, |
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128 : 3; |
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129 |
0 | 130 #ifndef PRODUCT |
131 int _compiled_invocation_count; // Number of nmethod invocations so far (for perf. debugging) | |
132 #endif | |
133 // Entry point for calling both from and to the interpreter. | |
134 address _i2i_entry; // All-args-on-stack calling convention | |
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135 // Adapter blob (i2c/c2i) for this Method*. Set once when method is linked. |
0 | 136 AdapterHandlerEntry* _adapter; |
137 // Entry point for calling from compiled code, to compiled code if it exists | |
138 // or else the interpreter. | |
139 volatile address _from_compiled_entry; // Cache of: _code ? _code->entry_point() : _adapter->c2i_entry() | |
140 // The entry point for calling both from and to compiled code is | |
141 // "_code->entry_point()". Because of tiered compilation and de-opt, this | |
142 // field can come and go. It can transition from NULL to not-null at any | |
143 // time (whenever a compile completes). It can transition from not-null to | |
144 // NULL only at safepoints (because of a de-opt). | |
145 nmethod* volatile _code; // Points to the corresponding piece of native code | |
146 volatile address _from_interpreted_entry; // Cache of _code ? _adapter->i2c_entry() : _i2i_entry | |
147 | |
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148 // Constructor |
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149 Method(ConstMethod* xconst, AccessFlags access_flags, int size); |
0 | 150 public: |
6934 | 151 |
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152 static Method* allocate(ClassLoaderData* loader_data, |
6934 | 153 int byte_code_size, |
154 AccessFlags access_flags, | |
8031 | 155 InlineTableSizes* sizes, |
6934 | 156 ConstMethod::MethodType method_type, |
157 TRAPS); | |
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158 |
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159 // CDS and vtbl checking can create an empty Method to get vtbl pointer. |
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160 Method(){} |
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161 |
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162 // The Method vtable is restored by this call when the Method is in the |
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163 // shared archive. See patch_klass_vtables() in metaspaceShared.cpp for |
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164 // all the gory details. SA, dtrace and pstack helpers distinguish metadata |
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165 // by their vtable. |
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166 void restore_vtable() { guarantee(is_method(), "vtable restored by this call"); } |
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167 bool is_method() const volatile { return true; } |
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168 |
0 | 169 // accessors for instance variables |
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170 |
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171 ConstMethod* constMethod() const { return _constMethod; } |
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172 void set_constMethod(ConstMethod* xconst) { _constMethod = xconst; } |
0 | 173 |
174 | |
175 static address make_adapters(methodHandle mh, TRAPS); | |
176 volatile address from_compiled_entry() const { return (address)OrderAccess::load_ptr_acquire(&_from_compiled_entry); } | |
177 volatile address from_interpreted_entry() const{ return (address)OrderAccess::load_ptr_acquire(&_from_interpreted_entry); } | |
178 | |
179 // access flag | |
180 AccessFlags access_flags() const { return _access_flags; } | |
181 void set_access_flags(AccessFlags flags) { _access_flags = flags; } | |
182 | |
183 // name | |
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184 Symbol* name() const { return constants()->symbol_at(name_index()); } |
0 | 185 int name_index() const { return constMethod()->name_index(); } |
186 void set_name_index(int index) { constMethod()->set_name_index(index); } | |
187 | |
188 // signature | |
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189 Symbol* signature() const { return constants()->symbol_at(signature_index()); } |
0 | 190 int signature_index() const { return constMethod()->signature_index(); } |
191 void set_signature_index(int index) { constMethod()->set_signature_index(index); } | |
192 | |
193 // generics support | |
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194 Symbol* generic_signature() const { int idx = generic_signature_index(); return ((idx != 0) ? constants()->symbol_at(idx) : (Symbol*)NULL); } |
0 | 195 int generic_signature_index() const { return constMethod()->generic_signature_index(); } |
196 void set_generic_signature_index(int index) { constMethod()->set_generic_signature_index(index); } | |
197 | |
198 // annotations support | |
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199 AnnotationArray* annotations() const { |
8031 | 200 return constMethod()->method_annotations(); |
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201 } |
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202 AnnotationArray* parameter_annotations() const { |
8031 | 203 return constMethod()->parameter_annotations(); |
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204 } |
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205 AnnotationArray* annotation_default() const { |
8031 | 206 return constMethod()->default_annotations(); |
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207 } |
8031 | 208 AnnotationArray* type_annotations() const { |
209 return constMethod()->type_annotations(); | |
210 } | |
0 | 211 |
212 #ifdef CC_INTERP | |
213 void set_result_index(BasicType type); | |
214 int result_index() { return _result_index; } | |
215 #endif | |
216 | |
217 // Helper routine: get klass name + "." + method name + signature as | |
218 // C string, for the purpose of providing more useful NoSuchMethodErrors | |
219 // and fatal error handling. The string is allocated in resource | |
220 // area if a buffer is not provided by the caller. | |
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221 char* name_and_sig_as_C_string() const; |
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222 char* name_and_sig_as_C_string(char* buf, int size) const; |
0 | 223 |
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224 // Static routine in the situations we don't have a Method* |
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225 static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature); |
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226 static char* name_and_sig_as_C_string(Klass* klass, Symbol* method_name, Symbol* signature, char* buf, int size); |
0 | 227 |
2142 | 228 Bytecodes::Code java_code_at(int bci) const { |
229 return Bytecodes::java_code_at(this, bcp_from(bci)); | |
230 } | |
231 Bytecodes::Code code_at(int bci) const { | |
232 return Bytecodes::code_at(this, bcp_from(bci)); | |
233 } | |
234 | |
0 | 235 // JVMTI breakpoints |
2142 | 236 Bytecodes::Code orig_bytecode_at(int bci) const; |
0 | 237 void set_orig_bytecode_at(int bci, Bytecodes::Code code); |
238 void set_breakpoint(int bci); | |
239 void clear_breakpoint(int bci); | |
240 void clear_all_breakpoints(); | |
241 // Tracking number of breakpoints, for fullspeed debugging. | |
242 // Only mutated by VM thread. | |
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243 u2 number_of_breakpoints() const { |
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244 if (method_counters() == NULL) { |
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245 return 0; |
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246 } else { |
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247 return method_counters()->number_of_breakpoints(); |
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248 } |
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249 } |
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250 void incr_number_of_breakpoints(TRAPS) { |
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251 MethodCounters* mcs = get_method_counters(CHECK); |
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252 if (mcs != NULL) { |
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253 mcs->incr_number_of_breakpoints(); |
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254 } |
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255 } |
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256 void decr_number_of_breakpoints(TRAPS) { |
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257 MethodCounters* mcs = get_method_counters(CHECK); |
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258 if (mcs != NULL) { |
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259 mcs->decr_number_of_breakpoints(); |
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260 } |
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261 } |
0 | 262 // Initialization only |
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263 void clear_number_of_breakpoints() { |
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264 if (method_counters() != NULL) { |
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265 method_counters()->clear_number_of_breakpoints(); |
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266 } |
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267 } |
0 | 268 |
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269 // index into InstanceKlass methods() array |
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270 // note: also used by jfr |
0 | 271 u2 method_idnum() const { return constMethod()->method_idnum(); } |
272 void set_method_idnum(u2 idnum) { constMethod()->set_method_idnum(idnum); } | |
273 | |
274 // code size | |
275 int code_size() const { return constMethod()->code_size(); } | |
276 | |
277 // method size | |
278 int method_size() const { return _method_size; } | |
279 void set_method_size(int size) { | |
280 assert(0 <= size && size < (1 << 16), "invalid method size"); | |
281 _method_size = size; | |
282 } | |
283 | |
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284 // constant pool for Klass* holding this method |
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285 ConstantPool* constants() const { return constMethod()->constants(); } |
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286 void set_constants(ConstantPool* c) { constMethod()->set_constants(c); } |
0 | 287 |
288 // max stack | |
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289 // return original max stack size for method verification |
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290 int verifier_max_stack() const { return constMethod()->max_stack(); } |
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291 int max_stack() const { return constMethod()->max_stack() + extra_stack_entries(); } |
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292 void set_max_stack(int size) { constMethod()->set_max_stack(size); } |
0 | 293 |
294 // max locals | |
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295 int max_locals() const { return constMethod()->max_locals(); } |
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296 void set_max_locals(int size) { constMethod()->set_max_locals(size); } |
1783 | 297 |
298 int highest_comp_level() const; | |
299 void set_highest_comp_level(int level); | |
300 int highest_osr_comp_level() const; | |
301 void set_highest_osr_comp_level(int level); | |
0 | 302 |
303 // Count of times method was exited via exception while interpreting | |
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304 void interpreter_throwout_increment(TRAPS) { |
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305 MethodCounters* mcs = get_method_counters(CHECK); |
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306 if (mcs != NULL) { |
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307 mcs->interpreter_throwout_increment(); |
0 | 308 } |
309 } | |
310 | |
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311 int interpreter_throwout_count() const { |
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312 if (method_counters() == NULL) { |
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313 return 0; |
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314 } else { |
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315 return method_counters()->interpreter_throwout_count(); |
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316 } |
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317 } |
0 | 318 |
319 // size of parameters | |
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320 int size_of_parameters() const { return constMethod()->size_of_parameters(); } |
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321 void set_size_of_parameters(int size) { constMethod()->set_size_of_parameters(size); } |
0 | 322 |
323 bool has_stackmap_table() const { | |
324 return constMethod()->has_stackmap_table(); | |
325 } | |
326 | |
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327 Array<u1>* stackmap_data() const { |
0 | 328 return constMethod()->stackmap_data(); |
329 } | |
330 | |
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331 void set_stackmap_data(Array<u1>* sd) { |
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332 constMethod()->set_stackmap_data(sd); |
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333 } |
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334 |
0 | 335 // exception handler table |
336 bool has_exception_handler() const | |
337 { return constMethod()->has_exception_handler(); } | |
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338 int exception_table_length() const |
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339 { return constMethod()->exception_table_length(); } |
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340 ExceptionTableElement* exception_table_start() const |
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341 { return constMethod()->exception_table_start(); } |
0 | 342 |
343 // Finds the first entry point bci of an exception handler for an | |
344 // exception of klass ex_klass thrown at throw_bci. A value of NULL | |
345 // for ex_klass indicates that the exception klass is not known; in | |
346 // this case it matches any constraint class. Returns -1 if the | |
347 // exception cannot be handled in this method. The handler | |
348 // constraint classes are loaded if necessary. Note that this may | |
349 // throw an exception if loading of the constraint classes causes | |
350 // an IllegalAccessError (bugid 4307310) or an OutOfMemoryError. | |
351 // If an exception is thrown, returns the bci of the | |
352 // exception handler which caused the exception to be thrown, which | |
353 // is needed for proper retries. See, for example, | |
354 // InterpreterRuntime::exception_handler_for_exception. | |
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355 static int fast_exception_handler_bci_for(methodHandle mh, KlassHandle ex_klass, int throw_bci, TRAPS); |
0 | 356 |
357 // method data access | |
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358 MethodData* method_data() const { |
0 | 359 return _method_data; |
360 } | |
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361 |
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362 void set_method_data(MethodData* data) { |
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363 _method_data = data; |
0 | 364 } |
365 | |
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366 MethodCounters* method_counters() const { |
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367 return _method_counters; |
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368 } |
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369 |
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370 |
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371 void set_method_counters(MethodCounters* counters) { |
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372 _method_counters = counters; |
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373 } |
1783 | 374 |
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375 #ifdef TIERED |
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376 // We are reusing interpreter_invocation_count as a holder for the previous event count! |
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377 // We can do that since interpreter_invocation_count is not used in tiered. |
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378 int prev_event_count() const { |
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379 if (method_counters() == NULL) { |
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380 return 0; |
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381 } else { |
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382 return method_counters()->interpreter_invocation_count(); |
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383 } |
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384 } |
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385 void set_prev_event_count(int count, TRAPS) { |
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386 MethodCounters* mcs = get_method_counters(CHECK); |
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387 if (mcs != NULL) { |
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388 mcs->set_interpreter_invocation_count(count); |
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389 } |
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390 } |
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391 jlong prev_time() const { |
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392 return method_counters() == NULL ? 0 : method_counters()->prev_time(); |
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393 } |
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394 void set_prev_time(jlong time, TRAPS) { |
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395 MethodCounters* mcs = get_method_counters(CHECK); |
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396 if (mcs != NULL) { |
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397 mcs->set_prev_time(time); |
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398 } |
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399 } |
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400 float rate() const { |
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401 return method_counters() == NULL ? 0 : method_counters()->rate(); |
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402 } |
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403 void set_rate(float rate, TRAPS) { |
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404 MethodCounters* mcs = get_method_counters(CHECK); |
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405 if (mcs != NULL) { |
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406 mcs->set_rate(rate); |
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407 } |
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408 } |
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409 #endif |
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410 |
1783 | 411 int invocation_count(); |
412 int backedge_count(); | |
413 | |
414 bool was_executed_more_than(int n); | |
415 bool was_never_executed() { return !was_executed_more_than(0); } | |
0 | 416 |
417 static void build_interpreter_method_data(methodHandle method, TRAPS); | |
418 | |
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419 static MethodCounters* build_method_counters(Method* m, TRAPS); |
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420 |
1783 | 421 int interpreter_invocation_count() { |
422 if (TieredCompilation) return invocation_count(); | |
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423 else return (method_counters() == NULL) ? 0 : |
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424 method_counters()->interpreter_invocation_count(); |
1783 | 425 } |
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426 int increment_interpreter_invocation_count(TRAPS) { |
1783 | 427 if (TieredCompilation) ShouldNotReachHere(); |
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428 MethodCounters* mcs = get_method_counters(CHECK_0); |
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429 return (mcs == NULL) ? 0 : mcs->increment_interpreter_invocation_count(); |
1783 | 430 } |
0 | 431 |
432 #ifndef PRODUCT | |
1783 | 433 int compiled_invocation_count() const { return _compiled_invocation_count; } |
0 | 434 void set_compiled_invocation_count(int count) { _compiled_invocation_count = count; } |
435 #endif // not PRODUCT | |
436 | |
605 | 437 // Clear (non-shared space) pointers which could not be relevant |
0 | 438 // if this (shared) method were mapped into another JVM. |
439 void remove_unshareable_info(); | |
440 | |
441 // nmethod/verified compiler entry | |
442 address verified_code_entry(); | |
443 bool check_code() const; // Not inline to avoid circular ref | |
444 nmethod* volatile code() const { assert( check_code(), "" ); return (nmethod *)OrderAccess::load_ptr_acquire(&_code); } | |
445 void clear_code(); // Clear out any compiled code | |
1202 | 446 static void set_code(methodHandle mh, nmethod* code); |
0 | 447 void set_adapter_entry(AdapterHandlerEntry* adapter) { _adapter = adapter; } |
448 address get_i2c_entry(); | |
449 address get_c2i_entry(); | |
450 address get_c2i_unverified_entry(); | |
451 AdapterHandlerEntry* adapter() { return _adapter; } | |
452 // setup entry points | |
453 void link_method(methodHandle method, TRAPS); | |
454 // clear entry points. Used by sharing code | |
455 void unlink_method(); | |
456 | |
457 // vtable index | |
458 enum VtableIndexFlag { | |
459 // Valid vtable indexes are non-negative (>= 0). | |
460 // These few negative values are used as sentinels. | |
710 | 461 highest_unused_vtable_index_value = -5, |
0 | 462 invalid_vtable_index = -4, // distinct from any valid vtable index |
463 garbage_vtable_index = -3, // not yet linked; no vtable layout yet | |
464 nonvirtual_vtable_index = -2 // there is no need for vtable dispatch | |
465 // 6330203 Note: Do not use -1, which was overloaded with many meanings. | |
466 }; | |
467 DEBUG_ONLY(bool valid_vtable_index() const { return _vtable_index >= nonvirtual_vtable_index; }) | |
468 int vtable_index() const { assert(valid_vtable_index(), ""); | |
469 return _vtable_index; } | |
470 void set_vtable_index(int index) { _vtable_index = index; } | |
471 | |
472 // interpreter entry | |
473 address interpreter_entry() const { return _i2i_entry; } | |
474 // Only used when first initialize so we can set _i2i_entry and _from_interpreted_entry | |
475 void set_interpreter_entry(address entry) { _i2i_entry = entry; _from_interpreted_entry = entry; } | |
476 | |
477 // native function (used for native methods only) | |
478 enum { | |
479 native_bind_event_is_interesting = true | |
480 }; | |
481 address native_function() const { return *(native_function_addr()); } | |
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482 address critical_native_function(); |
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483 |
0 | 484 // Must specify a real function (not NULL). |
485 // Use clear_native_function() to unregister. | |
486 void set_native_function(address function, bool post_event_flag); | |
487 bool has_native_function() const; | |
488 void clear_native_function(); | |
489 | |
490 // signature handler (used for native methods only) | |
491 address signature_handler() const { return *(signature_handler_addr()); } | |
492 void set_signature_handler(address handler); | |
493 | |
494 // Interpreter oopmap support | |
495 void mask_for(int bci, InterpreterOopMap* mask); | |
496 | |
497 #ifndef PRODUCT | |
498 // operations on invocation counter | |
1783 | 499 void print_invocation_count(); |
0 | 500 #endif |
501 | |
502 // byte codes | |
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503 void set_code(address code) { return constMethod()->set_code(code); } |
0 | 504 address code_base() const { return constMethod()->code_base(); } |
505 bool contains(address bcp) const { return constMethod()->contains(bcp); } | |
506 | |
507 // prints byte codes | |
508 void print_codes() const { print_codes_on(tty); } | |
509 void print_codes_on(outputStream* st) const PRODUCT_RETURN; | |
510 void print_codes_on(int from, int to, outputStream* st) const PRODUCT_RETURN; | |
511 | |
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512 // method parameters |
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513 bool has_method_parameters() const |
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514 { return constMethod()->has_method_parameters(); } |
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515 int method_parameters_length() const |
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516 { return constMethod()->method_parameters_length(); } |
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517 MethodParametersElement* method_parameters_start() const |
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518 { return constMethod()->method_parameters_start(); } |
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519 |
0 | 520 // checked exceptions |
521 int checked_exceptions_length() const | |
522 { return constMethod()->checked_exceptions_length(); } | |
523 CheckedExceptionElement* checked_exceptions_start() const | |
524 { return constMethod()->checked_exceptions_start(); } | |
525 | |
526 // localvariable table | |
527 bool has_localvariable_table() const | |
528 { return constMethod()->has_localvariable_table(); } | |
529 int localvariable_table_length() const | |
530 { return constMethod()->localvariable_table_length(); } | |
531 LocalVariableTableElement* localvariable_table_start() const | |
532 { return constMethod()->localvariable_table_start(); } | |
533 | |
534 bool has_linenumber_table() const | |
535 { return constMethod()->has_linenumber_table(); } | |
536 u_char* compressed_linenumber_table() const | |
537 { return constMethod()->compressed_linenumber_table(); } | |
538 | |
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539 // method holder (the Klass* holding this method) |
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540 InstanceKlass* method_holder() const { return constants()->pool_holder(); } |
0 | 541 |
542 void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments) | |
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543 Symbol* klass_name() const; // returns the name of the method holder |
0 | 544 BasicType result_type() const; // type of the method result |
545 int result_type_index() const; // type index of the method result | |
546 bool is_returning_oop() const { BasicType r = result_type(); return (r == T_OBJECT || r == T_ARRAY); } | |
547 bool is_returning_fp() const { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); } | |
548 | |
549 // Checked exceptions thrown by this method (resolved to mirrors) | |
550 objArrayHandle resolved_checked_exceptions(TRAPS) { return resolved_checked_exceptions_impl(this, THREAD); } | |
551 | |
552 // Access flags | |
553 bool is_public() const { return access_flags().is_public(); } | |
554 bool is_private() const { return access_flags().is_private(); } | |
555 bool is_protected() const { return access_flags().is_protected(); } | |
556 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } | |
557 bool is_static() const { return access_flags().is_static(); } | |
558 bool is_final() const { return access_flags().is_final(); } | |
559 bool is_synchronized() const { return access_flags().is_synchronized();} | |
560 bool is_native() const { return access_flags().is_native(); } | |
561 bool is_abstract() const { return access_flags().is_abstract(); } | |
562 bool is_strict() const { return access_flags().is_strict(); } | |
563 bool is_synthetic() const { return access_flags().is_synthetic(); } | |
564 | |
565 // returns true if contains only return operation | |
566 bool is_empty_method() const; | |
567 | |
568 // returns true if this is a vanilla constructor | |
569 bool is_vanilla_constructor() const; | |
570 | |
571 // checks method and its method holder | |
572 bool is_final_method() const; | |
573 bool is_strict_method() const; | |
574 | |
575 // true if method needs no dynamic dispatch (final and/or no vtable entry) | |
576 bool can_be_statically_bound() const; | |
577 | |
578 // returns true if the method has any backward branches. | |
579 bool has_loops() { | |
580 return access_flags().loops_flag_init() ? access_flags().has_loops() : compute_has_loops_flag(); | |
581 }; | |
582 | |
583 bool compute_has_loops_flag(); | |
584 | |
585 bool has_jsrs() { | |
586 return access_flags().has_jsrs(); | |
587 }; | |
588 void set_has_jsrs() { | |
589 _access_flags.set_has_jsrs(); | |
590 } | |
591 | |
592 // returns true if the method has any monitors. | |
593 bool has_monitors() const { return is_synchronized() || access_flags().has_monitor_bytecodes(); } | |
594 bool has_monitor_bytecodes() const { return access_flags().has_monitor_bytecodes(); } | |
595 | |
596 void set_has_monitor_bytecodes() { _access_flags.set_has_monitor_bytecodes(); } | |
597 | |
598 // monitor matching. This returns a conservative estimate of whether the monitorenter/monitorexit bytecodes | |
599 // propererly nest in the method. It might return false, even though they actually nest properly, since the info. | |
600 // has not been computed yet. | |
601 bool guaranteed_monitor_matching() const { return access_flags().is_monitor_matching(); } | |
602 void set_guaranteed_monitor_matching() { _access_flags.set_monitor_matching(); } | |
603 | |
604 // returns true if the method is an accessor function (setter/getter). | |
605 bool is_accessor() const; | |
606 | |
607 // returns true if the method is an initializer (<init> or <clinit>). | |
608 bool is_initializer() const; | |
609 | |
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610 // returns true if the method is static OR if the classfile version < 51 |
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611 bool has_valid_initializer_flags() const; |
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612 |
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613 // returns true if the method name is <clinit> and the method has |
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614 // valid static initializer flags. |
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615 bool is_static_initializer() const; |
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616 |
0 | 617 // compiled code support |
618 // NOTE: code() is inherently racy as deopt can be clearing code | |
619 // simultaneously. Use with caution. | |
620 bool has_compiled_code() const { return code() != NULL; } | |
621 | |
622 // sizing | |
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623 static int header_size() { return sizeof(Method)/HeapWordSize; } |
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624 static int size(bool is_native); |
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625 int size() const { return method_size(); } |
7956 | 626 #if INCLUDE_SERVICES |
627 void collect_statistics(KlassSizeStats *sz) const; | |
628 #endif | |
0 | 629 |
630 // interpreter support | |
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631 static ByteSize const_offset() { return byte_offset_of(Method, _constMethod ); } |
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632 static ByteSize access_flags_offset() { return byte_offset_of(Method, _access_flags ); } |
0 | 633 #ifdef CC_INTERP |
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634 static ByteSize result_index_offset() { return byte_offset_of(Method, _result_index ); } |
0 | 635 #endif /* CC_INTERP */ |
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636 static ByteSize from_compiled_offset() { return byte_offset_of(Method, _from_compiled_entry); } |
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637 static ByteSize code_offset() { return byte_offset_of(Method, _code); } |
0 | 638 static ByteSize method_data_offset() { |
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639 return byte_offset_of(Method, _method_data); |
0 | 640 } |
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641 static ByteSize method_counters_offset() { |
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642 return byte_offset_of(Method, _method_counters); |
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643 } |
0 | 644 #ifndef PRODUCT |
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645 static ByteSize compiled_invocation_counter_offset() { return byte_offset_of(Method, _compiled_invocation_count); } |
0 | 646 #endif // not PRODUCT |
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647 static ByteSize native_function_offset() { return in_ByteSize(sizeof(Method)); } |
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648 static ByteSize from_interpreted_offset() { return byte_offset_of(Method, _from_interpreted_entry ); } |
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649 static ByteSize interpreter_entry_offset() { return byte_offset_of(Method, _i2i_entry ); } |
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650 static ByteSize signature_handler_offset() { return in_ByteSize(sizeof(Method) + wordSize); } |
0 | 651 |
652 // for code generation | |
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653 static int method_data_offset_in_bytes() { return offset_of(Method, _method_data); } |
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654 static int intrinsic_id_offset_in_bytes() { return offset_of(Method, _intrinsic_id); } |
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655 static int intrinsic_id_size_in_bytes() { return sizeof(u1); } |
0 | 656 |
657 // Static methods that are used to implement member methods where an exposed this pointer | |
658 // is needed due to possible GCs | |
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659 static objArrayHandle resolved_checked_exceptions_impl(Method* this_oop, TRAPS); |
0 | 660 |
661 // Returns the byte code index from the byte code pointer | |
662 int bci_from(address bcp) const; | |
663 address bcp_from(int bci) const; | |
664 int validate_bci_from_bcx(intptr_t bcx) const; | |
665 | |
666 // Returns the line number for a bci if debugging information for the method is prowided, | |
667 // -1 is returned otherwise. | |
668 int line_number_from_bci(int bci) const; | |
669 | |
670 // Reflection support | |
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671 bool is_overridden_in(Klass* k) const; |
0 | 672 |
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673 // Stack walking support |
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674 bool is_ignored_by_security_stack_walk() const; |
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675 |
710 | 676 // JSR 292 support |
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677 bool is_method_handle_intrinsic() const; // MethodHandles::is_signature_polymorphic_intrinsic(intrinsic_id) |
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678 bool is_compiled_lambda_form() const; // intrinsic_id() == vmIntrinsics::_compiledLambdaForm |
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679 bool has_member_arg() const; // intrinsic_id() == vmIntrinsics::_linkToSpecial, etc. |
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680 static methodHandle make_method_handle_intrinsic(vmIntrinsics::ID iid, // _invokeBasic, _linkToVirtual |
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681 Symbol* signature, //anything at all |
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682 TRAPS); |
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683 static Klass* check_non_bcp_klass(Klass* klass); |
710 | 684 // these operate only on invoke methods: |
685 // presize interpreter frames for extra interpreter stack entries, if needed | |
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686 // method handles want to be able to push a few extra values (e.g., a bound receiver), and |
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687 // invokedynamic sometimes needs to push a bootstrap method, call site, and arglist, |
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688 // all without checking for a stack overflow |
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689 static int extra_stack_entries() { return EnableInvokeDynamic ? 2 : 0; } |
710 | 690 static int extra_stack_words(); // = extra_stack_entries() * Interpreter::stackElementSize() |
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691 |
0 | 692 // RedefineClasses() support: |
693 bool is_old() const { return access_flags().is_old(); } | |
694 void set_is_old() { _access_flags.set_is_old(); } | |
695 bool is_obsolete() const { return access_flags().is_obsolete(); } | |
696 void set_is_obsolete() { _access_flags.set_is_obsolete(); } | |
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697 bool on_stack() const { return access_flags().on_stack(); } |
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698 void set_on_stack(const bool value); |
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699 |
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700 // see the definition in Method*.cpp for the gory details |
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701 bool should_not_be_cached() const; |
0 | 702 |
703 // JVMTI Native method prefixing support: | |
704 bool is_prefixed_native() const { return access_flags().is_prefixed_native(); } | |
705 void set_is_prefixed_native() { _access_flags.set_is_prefixed_native(); } | |
706 | |
707 // Rewriting support | |
708 static methodHandle clone_with_new_data(methodHandle m, u_char* new_code, int new_code_length, | |
709 u_char* new_compressed_linenumber_table, int new_compressed_linenumber_size, TRAPS); | |
710 | |
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711 // jmethodID handling |
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712 // Because the useful life-span of a jmethodID cannot be determined, |
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713 // once created they are never reclaimed. The methods to which they refer, |
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714 // however, can be GC'ed away if the class is unloaded or if the method is |
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715 // made obsolete or deleted -- in these cases, the jmethodID |
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716 // refers to NULL (as is the case for any weak reference). |
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717 static jmethodID make_jmethod_id(ClassLoaderData* loader_data, Method* mh); |
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718 static void destroy_jmethod_id(ClassLoaderData* loader_data, jmethodID mid); |
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719 |
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720 // Use resolve_jmethod_id() in situations where the caller is expected |
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721 // to provide a valid jmethodID; the only sanity checks are in asserts; |
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722 // result guaranteed not to be NULL. |
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723 inline static Method* resolve_jmethod_id(jmethodID mid) { |
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724 assert(mid != NULL, "JNI method id should not be null"); |
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725 return *((Method**)mid); |
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726 } |
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727 |
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728 // Use checked_resolve_jmethod_id() in situations where the caller |
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729 // should provide a valid jmethodID, but might not. NULL is returned |
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730 // when the jmethodID does not refer to a valid method. |
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731 static Method* checked_resolve_jmethod_id(jmethodID mid); |
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732 |
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733 static void change_method_associated_with_jmethod_id(jmethodID old_jmid_ptr, Method* new_method); |
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734 static bool is_method_id(jmethodID mid); |
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735 |
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736 // Clear methods |
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737 static void clear_jmethod_ids(ClassLoaderData* loader_data); |
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738 static void print_jmethod_ids(ClassLoaderData* loader_data, outputStream* out) PRODUCT_RETURN; |
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739 |
0 | 740 // Get this method's jmethodID -- allocate if it doesn't exist |
741 jmethodID jmethod_id() { methodHandle this_h(this); | |
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742 return InstanceKlass::get_jmethod_id(method_holder(), this_h); } |
0 | 743 |
744 // Lookup the jmethodID for this method. Return NULL if not found. | |
745 // NOTE that this function can be called from a signal handler | |
746 // (see AsyncGetCallTrace support for Forte Analyzer) and this | |
747 // needs to be async-safe. No allocation should be done and | |
748 // so handles are not used to avoid deadlock. | |
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749 jmethodID find_jmethod_id_or_null() { return method_holder()->jmethod_id_or_null(this); } |
0 | 750 |
751 // JNI static invoke cached itable index accessors | |
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752 int cached_itable_index() { return method_holder()->cached_itable_index(method_idnum()); } |
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753 void set_cached_itable_index(int index) { method_holder()->set_cached_itable_index(method_idnum(), index); } |
0 | 754 |
755 // Support for inlining of intrinsic methods | |
856
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756 vmIntrinsics::ID intrinsic_id() const { return (vmIntrinsics::ID) _intrinsic_id; } |
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757 void set_intrinsic_id(vmIntrinsics::ID id) { _intrinsic_id = (u1) id; } |
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758 |
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759 // Helper routines for intrinsic_id() and vmIntrinsics::method(). |
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760 void init_intrinsic_id(); // updates from _none if a match |
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761 static vmSymbols::SID klass_id_for_intrinsics(Klass* holder); |
0 | 762 |
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763 bool jfr_towrite() { return _jfr_towrite; } |
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764 void set_jfr_towrite(bool x) { _jfr_towrite = x; } |
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765 bool caller_sensitive() { return _caller_sensitive; } |
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766 void set_caller_sensitive(bool x) { _caller_sensitive = x; } |
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767 bool force_inline() { return _force_inline; } |
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768 void set_force_inline(bool x) { _force_inline = x; } |
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769 bool dont_inline() { return _dont_inline; } |
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770 void set_dont_inline(bool x) { _dont_inline = x; } |
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771 bool is_hidden() { return _hidden; } |
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772 void set_hidden(bool x) { _hidden = x; } |
6934 | 773 ConstMethod::MethodType method_type() const { |
774 return _constMethod->method_type(); | |
775 } | |
776 bool is_overpass() const { return method_type() == ConstMethod::OVERPASS; } | |
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777 |
0 | 778 // On-stack replacement support |
1783 | 779 bool has_osr_nmethod(int level, bool match_level) { |
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780 return method_holder()->lookup_osr_nmethod(this, InvocationEntryBci, level, match_level) != NULL; |
1783 | 781 } |
782 | |
783 nmethod* lookup_osr_nmethod_for(int bci, int level, bool match_level) { | |
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784 return method_holder()->lookup_osr_nmethod(this, bci, level, match_level); |
1783 | 785 } |
0 | 786 |
787 // Inline cache support | |
788 void cleanup_inline_caches(); | |
789 | |
790 // Find if klass for method is loaded | |
791 bool is_klass_loaded_by_klass_index(int klass_index) const; | |
792 bool is_klass_loaded(int refinfo_index, bool must_be_resolved = false) const; | |
793 | |
794 // Indicates whether compilation failed earlier for this method, or | |
795 // whether it is not compilable for another reason like having a | |
796 // breakpoint set in it. | |
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797 bool is_not_compilable(int comp_level = CompLevel_any) const; |
7998 | 798 void set_not_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL); |
1783 | 799 void set_not_compilable_quietly(int comp_level = CompLevel_all) { |
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800 set_not_compilable(comp_level, false); |
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801 } |
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802 bool is_not_osr_compilable(int comp_level = CompLevel_any) const; |
7998 | 803 void set_not_osr_compilable(int comp_level = CompLevel_all, bool report = true, const char* reason = NULL); |
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804 void set_not_osr_compilable_quietly(int comp_level = CompLevel_all) { |
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805 set_not_osr_compilable(comp_level, false); |
1783 | 806 } |
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807 |
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808 private: |
7998 | 809 void print_made_not_compilable(int comp_level, bool is_osr, bool report, const char* reason); |
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810 |
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811 MethodCounters* get_method_counters(TRAPS) { |
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812 if (_method_counters == NULL) { |
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813 build_method_counters(this, CHECK_AND_CLEAR_NULL); |
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814 } |
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815 return _method_counters; |
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816 } |
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817 |
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818 public: |
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819 bool is_not_c1_compilable() const { return access_flags().is_not_c1_compilable(); } |
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820 void set_not_c1_compilable() { _access_flags.set_not_c1_compilable(); } |
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821 void clear_not_c1_compilable() { _access_flags.clear_not_c1_compilable(); } |
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822 bool is_not_c2_compilable() const { return access_flags().is_not_c2_compilable(); } |
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823 void set_not_c2_compilable() { _access_flags.set_not_c2_compilable(); } |
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824 void clear_not_c2_compilable() { _access_flags.clear_not_c2_compilable(); } |
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825 |
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826 bool is_not_c1_osr_compilable() const { return is_not_c1_compilable(); } // don't waste an accessFlags bit |
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827 void set_not_c1_osr_compilable() { set_not_c1_compilable(); } // don't waste an accessFlags bit |
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828 void clear_not_c1_osr_compilable() { clear_not_c1_compilable(); } // don't waste an accessFlags bit |
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829 bool is_not_c2_osr_compilable() const { return access_flags().is_not_c2_osr_compilable(); } |
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830 void set_not_c2_osr_compilable() { _access_flags.set_not_c2_osr_compilable(); } |
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831 void clear_not_c2_osr_compilable() { _access_flags.clear_not_c2_osr_compilable(); } |
0 | 832 |
833 // Background compilation support | |
1783 | 834 bool queued_for_compilation() const { return access_flags().queued_for_compilation(); } |
835 void set_queued_for_compilation() { _access_flags.set_queued_for_compilation(); } | |
836 void clear_queued_for_compilation() { _access_flags.clear_queued_for_compilation(); } | |
0 | 837 |
838 // Resolve all classes in signature, return 'true' if successful | |
839 static bool load_signature_classes(methodHandle m, TRAPS); | |
840 | |
841 // Return if true if not all classes references in signature, including return type, has been loaded | |
842 static bool has_unloaded_classes_in_signature(methodHandle m, TRAPS); | |
843 | |
844 // Printing | |
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845 void print_short_name(outputStream* st = tty); // prints as klassname::methodname; Exposed so field engineers can debug VM |
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846 #if INCLUDE_JVMTI |
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847 void print_name(outputStream* st = tty); // prints as "virtual void foo(int)"; exposed for TraceRedefineClasses |
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848 #else |
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849 void print_name(outputStream* st = tty) PRODUCT_RETURN; // prints as "virtual void foo(int)" |
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850 #endif |
0 | 851 |
852 // Helper routine used for method sorting | |
8031 | 853 static void sort_methods(Array<Method*>* methods, bool idempotent = false); |
0 | 854 |
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855 // Deallocation function for redefine classes or if an error occurs |
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856 void deallocate_contents(ClassLoaderData* loader_data); |
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857 |
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858 // Printing |
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859 #ifndef PRODUCT |
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860 void print_on(outputStream* st) const; |
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861 #endif |
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862 void print_value_on(outputStream* st) const; |
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863 |
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864 const char* internal_name() const { return "{method}"; } |
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865 |
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866 // Check for valid method pointer |
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867 bool is_valid_method() const; |
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868 |
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869 // Verify |
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870 void verify() { verify_on(tty); } |
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871 void verify_on(outputStream* st); |
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872 |
0 | 873 private: |
874 | |
875 // Inlined elements | |
876 address* native_function_addr() const { assert(is_native(), "must be native"); return (address*) (this+1); } | |
877 address* signature_handler_addr() const { return native_function_addr() + 1; } | |
878 }; | |
879 | |
880 | |
881 // Utility class for compressing line number tables | |
882 | |
883 class CompressedLineNumberWriteStream: public CompressedWriteStream { | |
884 private: | |
885 int _bci; | |
886 int _line; | |
887 public: | |
888 // Constructor | |
889 CompressedLineNumberWriteStream(int initial_size) : CompressedWriteStream(initial_size), _bci(0), _line(0) {} | |
890 CompressedLineNumberWriteStream(u_char* buffer, int initial_size) : CompressedWriteStream(buffer, initial_size), _bci(0), _line(0) {} | |
891 | |
892 // Write (bci, line number) pair to stream | |
893 void write_pair_regular(int bci_delta, int line_delta); | |
894 | |
895 inline void write_pair_inline(int bci, int line) { | |
896 int bci_delta = bci - _bci; | |
897 int line_delta = line - _line; | |
898 _bci = bci; | |
899 _line = line; | |
900 // Skip (0,0) deltas - they do not add information and conflict with terminator. | |
901 if (bci_delta == 0 && line_delta == 0) return; | |
902 // Check if bci is 5-bit and line number 3-bit unsigned. | |
903 if (((bci_delta & ~0x1F) == 0) && ((line_delta & ~0x7) == 0)) { | |
904 // Compress into single byte. | |
905 jubyte value = ((jubyte) bci_delta << 3) | (jubyte) line_delta; | |
906 // Check that value doesn't match escape character. | |
907 if (value != 0xFF) { | |
908 write_byte(value); | |
909 return; | |
910 } | |
911 } | |
912 write_pair_regular(bci_delta, line_delta); | |
913 } | |
914 | |
915 // Windows AMD64 + Apr 2005 PSDK with /O2 generates bad code for write_pair. | |
916 // Disabling optimization doesn't work for methods in header files | |
917 // so we force it to call through the non-optimized version in the .cpp. | |
918 // It's gross, but it's the only way we can ensure that all callers are | |
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919 // fixed. _MSC_VER is defined by the windows compiler |
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920 #if defined(_M_AMD64) && _MSC_VER >= 1400 |
0 | 921 void write_pair(int bci, int line); |
922 #else | |
923 void write_pair(int bci, int line) { write_pair_inline(bci, line); } | |
924 #endif | |
925 | |
926 // Write end-of-stream marker | |
927 void write_terminator() { write_byte(0); } | |
928 }; | |
929 | |
930 | |
931 // Utility class for decompressing line number tables | |
932 | |
933 class CompressedLineNumberReadStream: public CompressedReadStream { | |
934 private: | |
935 int _bci; | |
936 int _line; | |
937 public: | |
938 // Constructor | |
939 CompressedLineNumberReadStream(u_char* buffer); | |
940 // Read (bci, line number) pair from stream. Returns false at end-of-stream. | |
941 bool read_pair(); | |
942 // Accessing bci and line number (after calling read_pair) | |
943 int bci() const { return _bci; } | |
944 int line() const { return _line; } | |
945 }; | |
946 | |
947 | |
948 /// Fast Breakpoints. | |
949 | |
950 // If this structure gets more complicated (because bpts get numerous), | |
951 // move it into its own header. | |
952 | |
953 // There is presently no provision for concurrent access | |
954 // to breakpoint lists, which is only OK for JVMTI because | |
955 // breakpoints are written only at safepoints, and are read | |
956 // concurrently only outside of safepoints. | |
957 | |
6197 | 958 class BreakpointInfo : public CHeapObj<mtClass> { |
0 | 959 friend class VMStructs; |
960 private: | |
961 Bytecodes::Code _orig_bytecode; | |
962 int _bci; | |
963 u2 _name_index; // of method | |
964 u2 _signature_index; // of method | |
965 BreakpointInfo* _next; // simple storage allocation | |
966 | |
967 public: | |
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968 BreakpointInfo(Method* m, int bci); |
0 | 969 |
970 // accessors | |
971 Bytecodes::Code orig_bytecode() { return _orig_bytecode; } | |
972 void set_orig_bytecode(Bytecodes::Code code) { _orig_bytecode = code; } | |
973 int bci() { return _bci; } | |
974 | |
975 BreakpointInfo* next() const { return _next; } | |
976 void set_next(BreakpointInfo* n) { _next = n; } | |
977 | |
978 // helps for searchers | |
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979 bool match(const Method* m, int bci) { |
0 | 980 return bci == _bci && match(m); |
981 } | |
982 | |
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983 bool match(const Method* m) { |
0 | 984 return _name_index == m->name_index() && |
985 _signature_index == m->signature_index(); | |
986 } | |
987 | |
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988 void set(Method* method); |
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989 void clear(Method* method); |
0 | 990 }; |
1972 | 991 |
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992 // Utility class for access exception handlers |
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993 class ExceptionTable : public StackObj { |
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994 private: |
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995 ExceptionTableElement* _table; |
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996 u2 _length; |
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997 |
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998 public: |
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999 ExceptionTable(Method* m) { |
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1000 if (m->has_exception_handler()) { |
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1001 _table = m->exception_table_start(); |
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1002 _length = m->exception_table_length(); |
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1003 } else { |
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1004 _table = NULL; |
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1005 _length = 0; |
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1006 } |
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1007 } |
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1008 |
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1009 int length() const { |
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1010 return _length; |
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1011 } |
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1012 |
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1013 u2 start_pc(int idx) const { |
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1014 assert(idx < _length, "out of bounds"); |
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1015 return _table[idx].start_pc; |
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1016 } |
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1017 |
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1018 void set_start_pc(int idx, u2 value) { |
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1019 assert(idx < _length, "out of bounds"); |
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1020 _table[idx].start_pc = value; |
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1021 } |
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1022 |
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1023 u2 end_pc(int idx) const { |
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1024 assert(idx < _length, "out of bounds"); |
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1025 return _table[idx].end_pc; |
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1026 } |
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1027 |
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1028 void set_end_pc(int idx, u2 value) { |
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1029 assert(idx < _length, "out of bounds"); |
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1030 _table[idx].end_pc = value; |
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1031 } |
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1032 |
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1033 u2 handler_pc(int idx) const { |
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1034 assert(idx < _length, "out of bounds"); |
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1035 return _table[idx].handler_pc; |
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1036 } |
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1037 |
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1038 void set_handler_pc(int idx, u2 value) { |
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1039 assert(idx < _length, "out of bounds"); |
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1040 _table[idx].handler_pc = value; |
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1041 } |
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1042 |
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1043 u2 catch_type_index(int idx) const { |
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1044 assert(idx < _length, "out of bounds"); |
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1045 return _table[idx].catch_type_index; |
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1046 } |
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1047 |
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1048 void set_catch_type_index(int idx, u2 value) { |
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1049 assert(idx < _length, "out of bounds"); |
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1050 _table[idx].catch_type_index = value; |
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1051 } |
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1052 }; |
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1053 |
1972 | 1054 #endif // SHARE_VM_OOPS_METHODOOP_HPP |