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annotate src/share/vm/ci/ciMethod.hpp @ 3763:e66f38dd58a9
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date | Wed, 08 Jun 2011 08:39:53 -0700 |
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0 | 1 /* |
2142 | 2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CI_CIMETHOD_HPP |
26 #define SHARE_VM_CI_CIMETHOD_HPP | |
27 | |
28 #include "ci/ciFlags.hpp" | |
29 #include "ci/ciInstanceKlass.hpp" | |
30 #include "ci/ciObject.hpp" | |
31 #include "ci/ciSignature.hpp" | |
32 #include "compiler/methodLiveness.hpp" | |
33 #include "prims/methodHandles.hpp" | |
34 #include "utilities/bitMap.hpp" | |
35 | |
0 | 36 class ciMethodBlocks; |
37 class MethodLiveness; | |
38 class BitMap; | |
39 class Arena; | |
40 class BCEscapeAnalyzer; | |
41 | |
42 | |
43 // ciMethod | |
44 // | |
45 // This class represents a methodOop in the HotSpot virtual | |
46 // machine. | |
47 class ciMethod : public ciObject { | |
48 friend class CompileBroker; | |
49 CI_PACKAGE_ACCESS | |
50 friend class ciEnv; | |
51 friend class ciExceptionHandlerStream; | |
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52 friend class ciBytecodeStream; |
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53 friend class ciMethodHandle; |
0 | 54 |
55 private: | |
56 // General method information. | |
57 ciFlags _flags; | |
58 ciSymbol* _name; | |
59 ciInstanceKlass* _holder; | |
60 ciSignature* _signature; | |
61 ciMethodData* _method_data; | |
62 ciMethodBlocks* _method_blocks; | |
63 | |
64 // Code attributes. | |
65 int _code_size; | |
66 int _max_stack; | |
67 int _max_locals; | |
68 vmIntrinsics::ID _intrinsic_id; | |
69 int _handler_count; | |
70 int _interpreter_invocation_count; | |
71 int _interpreter_throwout_count; | |
72 | |
73 bool _uses_monitors; | |
74 bool _balanced_monitors; | |
1783 | 75 bool _is_c1_compilable; |
76 bool _is_c2_compilable; | |
0 | 77 bool _can_be_statically_bound; |
78 | |
79 // Lazy fields, filled in on demand | |
80 address _code; | |
81 ciExceptionHandler** _exception_handlers; | |
82 | |
83 // Optional liveness analyzer. | |
84 MethodLiveness* _liveness; | |
1692 | 85 #if defined(COMPILER2) || defined(SHARK) |
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86 ciTypeFlow* _flow; |
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87 BCEscapeAnalyzer* _bcea; |
0 | 88 #endif |
89 | |
90 ciMethod(methodHandle h_m); | |
91 ciMethod(ciInstanceKlass* holder, ciSymbol* name, ciSymbol* signature); | |
92 | |
93 methodOop get_methodOop() const { | |
94 methodOop m = (methodOop)get_oop(); | |
95 assert(m != NULL, "illegal use of unloaded method"); | |
96 return m; | |
97 } | |
98 | |
99 oop loader() const { return _holder->loader(); } | |
100 | |
101 const char* type_string() { return "ciMethod"; } | |
102 | |
103 void print_impl(outputStream* st); | |
104 | |
105 void load_code(); | |
106 | |
107 void check_is_loaded() const { assert(is_loaded(), "not loaded"); } | |
108 | |
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109 bool ensure_method_data(methodHandle h_m); |
0 | 110 |
111 void code_at_put(int bci, Bytecodes::Code code) { | |
112 Bytecodes::check(code); | |
113 assert(0 <= bci && bci < code_size(), "valid bci"); | |
114 address bcp = _code + bci; | |
115 *bcp = code; | |
116 } | |
117 | |
118 public: | |
119 // Basic method information. | |
120 ciFlags flags() const { check_is_loaded(); return _flags; } | |
121 ciSymbol* name() const { return _name; } | |
122 ciInstanceKlass* holder() const { return _holder; } | |
123 ciMethodData* method_data(); | |
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124 ciMethodData* method_data_or_null(); |
0 | 125 |
126 // Signature information. | |
127 ciSignature* signature() const { return _signature; } | |
128 ciType* return_type() const { return _signature->return_type(); } | |
129 int arg_size_no_receiver() const { return _signature->size(); } | |
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130 // Can only be used on loaded ciMethods |
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131 int arg_size() const { |
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132 check_is_loaded(); |
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133 return _signature->size() + (_flags.is_static() ? 0 : 1); |
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134 } |
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135 // Report the number of elements on stack when invoking this method. |
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136 // This is different than the regular arg_size because invokdynamic |
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137 // has an implicit receiver. |
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138 int invoke_arg_size(Bytecodes::Code code) const { |
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139 int arg_size = _signature->size(); |
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140 // Add a receiver argument, maybe: |
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141 if (code != Bytecodes::_invokestatic && |
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142 code != Bytecodes::_invokedynamic) { |
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143 arg_size++; |
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144 } |
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145 return arg_size; |
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146 } |
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147 |
0 | 148 |
149 // Method code and related information. | |
150 address code() { if (_code == NULL) load_code(); return _code; } | |
151 int code_size() const { check_is_loaded(); return _code_size; } | |
152 int max_stack() const { check_is_loaded(); return _max_stack; } | |
153 int max_locals() const { check_is_loaded(); return _max_locals; } | |
154 vmIntrinsics::ID intrinsic_id() const { check_is_loaded(); return _intrinsic_id; } | |
155 bool has_exception_handlers() const { check_is_loaded(); return _handler_count > 0; } | |
156 int exception_table_length() const { check_is_loaded(); return _handler_count; } | |
157 int interpreter_invocation_count() const { check_is_loaded(); return _interpreter_invocation_count; } | |
158 int interpreter_throwout_count() const { check_is_loaded(); return _interpreter_throwout_count; } | |
159 | |
1783 | 160 int comp_level(); |
161 | |
0 | 162 Bytecodes::Code java_code_at_bci(int bci) { |
163 address bcp = code() + bci; | |
2142 | 164 return Bytecodes::java_code_at(NULL, bcp); |
0 | 165 } |
166 BCEscapeAnalyzer *get_bcea(); | |
167 ciMethodBlocks *get_method_blocks(); | |
168 | |
169 bool has_linenumber_table() const; // length unknown until decompression | |
170 u_char* compressed_linenumber_table() const; // not preserved by gc | |
171 | |
172 int line_number_from_bci(int bci) const; | |
173 | |
174 // Runtime information. | |
175 int vtable_index(); | |
1692 | 176 #ifdef SHARK |
177 int itable_index(); | |
178 #endif // SHARK | |
0 | 179 address native_entry(); |
180 address interpreter_entry(); | |
181 | |
182 // Analysis and profiling. | |
183 // | |
184 // Usage note: liveness_at_bci and init_vars should be wrapped in ResourceMarks. | |
185 bool uses_monitors() const { return _uses_monitors; } // this one should go away, it has a misleading name | |
186 bool has_monitor_bytecodes() const { return _uses_monitors; } | |
187 bool has_balanced_monitors(); | |
188 | |
991 | 189 // Returns a bitmap indicating which locals are required to be |
190 // maintained as live for deopt. raw_liveness_at_bci is always the | |
191 // direct output of the liveness computation while liveness_at_bci | |
192 // may mark all locals as live to improve support for debugging Java | |
193 // code by maintaining the state of as many locals as possible. | |
194 MethodLivenessResult raw_liveness_at_bci(int bci); | |
0 | 195 MethodLivenessResult liveness_at_bci(int bci); |
196 | |
197 // Get the interpreters viewpoint on oop liveness. MethodLiveness is | |
198 // conservative in the sense that it may consider locals to be live which | |
199 // cannot be live, like in the case where a local could contain an oop or | |
200 // a primitive along different paths. In that case the local must be | |
201 // dead when those paths merge. Since the interpreter's viewpoint is | |
202 // used when gc'ing an interpreter frame we need to use its viewpoint | |
203 // during OSR when loading the locals. | |
204 | |
205 BitMap live_local_oops_at_bci(int bci); | |
206 | |
207 #ifdef COMPILER1 | |
208 const BitMap bci_block_start(); | |
209 #endif | |
210 | |
211 ciTypeFlow* get_flow_analysis(); | |
212 ciTypeFlow* get_osr_flow_analysis(int osr_bci); // alternate entry point | |
213 ciCallProfile call_profile_at_bci(int bci); | |
214 int interpreter_call_site_count(int bci); | |
215 | |
216 // Given a certain calling environment, find the monomorphic target | |
217 // for the call. Return NULL if the call is not monomorphic in | |
218 // its calling environment. | |
219 ciMethod* find_monomorphic_target(ciInstanceKlass* caller, | |
220 ciInstanceKlass* callee_holder, | |
221 ciInstanceKlass* actual_receiver); | |
222 | |
223 // Given a known receiver klass, find the target for the call. | |
224 // Return NULL if the call has no target or is abstract. | |
225 ciMethod* resolve_invoke(ciKlass* caller, ciKlass* exact_receiver); | |
226 | |
227 // Find the proper vtable index to invoke this method. | |
228 int resolve_vtable_index(ciKlass* caller, ciKlass* receiver); | |
229 | |
230 // Compilation directives | |
231 bool will_link(ciKlass* accessing_klass, | |
232 ciKlass* declared_method_holder, | |
233 Bytecodes::Code bc); | |
234 bool should_exclude(); | |
235 bool should_inline(); | |
236 bool should_not_inline(); | |
237 bool should_print_assembly(); | |
238 bool break_at_execute(); | |
239 bool has_option(const char *option); | |
240 bool can_be_compiled(); | |
241 bool can_be_osr_compiled(int entry_bci); | |
242 void set_not_compilable(); | |
243 bool has_compiled_code(); | |
1783 | 244 int instructions_size(int comp_level = CompLevel_any); |
0 | 245 void log_nmethod_identity(xmlStream* log); |
246 bool is_not_reached(int bci); | |
247 bool was_executed_more_than(int times); | |
248 bool has_unloaded_classes_in_signature(); | |
249 bool is_klass_loaded(int refinfo_index, bool must_be_resolved) const; | |
250 bool check_call(int refinfo_index, bool is_static) const; | |
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251 bool ensure_method_data(); // make sure it exists in the VM also |
0 | 252 int scale_count(int count, float prof_factor = 1.); // make MDO count commensurate with IIC |
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253 |
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254 // JSR 292 support |
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255 bool is_method_handle_invoke() const; |
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256 bool is_method_handle_adapter() const; |
710 | 257 ciInstance* method_handle_type(); |
0 | 258 |
259 // What kind of ciObject is this? | |
260 bool is_method() { return true; } | |
261 | |
262 // Java access flags | |
263 bool is_public () const { return flags().is_public(); } | |
264 bool is_private () const { return flags().is_private(); } | |
265 bool is_protected () const { return flags().is_protected(); } | |
266 bool is_static () const { return flags().is_static(); } | |
267 bool is_final () const { return flags().is_final(); } | |
268 bool is_synchronized() const { return flags().is_synchronized(); } | |
269 bool is_native () const { return flags().is_native(); } | |
270 bool is_interface () const { return flags().is_interface(); } | |
271 bool is_abstract () const { return flags().is_abstract(); } | |
272 bool is_strict () const { return flags().is_strict(); } | |
273 | |
274 // Other flags | |
275 bool is_empty_method() const; | |
276 bool is_vanilla_constructor() const; | |
277 bool is_final_method() const { return is_final() || holder()->is_final(); } | |
278 bool has_loops () const; | |
279 bool has_jsrs () const; | |
280 bool is_accessor () const; | |
281 bool is_initializer () const; | |
282 bool can_be_statically_bound() const { return _can_be_statically_bound; } | |
283 | |
284 // Print the bytecodes of this method. | |
285 void print_codes_on(outputStream* st); | |
286 void print_codes() { | |
287 print_codes_on(tty); | |
288 } | |
289 void print_codes_on(int from, int to, outputStream* st); | |
290 | |
291 // Print the name of this method in various incarnations. | |
292 void print_name(outputStream* st = tty); | |
293 void print_short_name(outputStream* st = tty); | |
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294 |
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295 methodOop get_method_handle_target() { |
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296 KlassHandle receiver_limit; int flags = 0; |
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297 methodHandle m = MethodHandles::decode_method(get_oop(), receiver_limit, flags); |
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298 return m(); |
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299 } |
0 | 300 }; |
1972 | 301 |
302 #endif // SHARE_VM_CI_CIMETHOD_HPP |