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annotate src/share/vm/ci/ciMethod.hpp @ 6883:b988bff99b38
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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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 // | |
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45 // This class represents a Method* in the HotSpot virtual |
0 | 46 // machine. |
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47 class ciMethod : public ciMetadata { |
0 | 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); | |
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91 ciMethod(ciInstanceKlass* holder, ciSymbol* name, ciSymbol* signature, ciInstanceKlass* accessor); |
0 | 92 |
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93 Method* get_Method() const { |
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94 Method* m = (Method*)_metadata; |
0 | 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 invokedynamic |
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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 if (is_loaded()) { |
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140 return arg_size(); |
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141 } else { |
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142 int arg_size = _signature->size(); |
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143 // Add a receiver argument, maybe: |
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144 if (code != Bytecodes::_invokestatic && |
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145 code != Bytecodes::_invokedynamic) { |
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146 arg_size++; |
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147 } |
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148 return arg_size; |
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149 } |
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150 } |
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151 |
0 | 152 |
153 // Method code and related information. | |
154 address code() { if (_code == NULL) load_code(); return _code; } | |
155 int code_size() const { check_is_loaded(); return _code_size; } | |
156 int max_stack() const { check_is_loaded(); return _max_stack; } | |
157 int max_locals() const { check_is_loaded(); return _max_locals; } | |
158 vmIntrinsics::ID intrinsic_id() const { check_is_loaded(); return _intrinsic_id; } | |
159 bool has_exception_handlers() const { check_is_loaded(); return _handler_count > 0; } | |
160 int exception_table_length() const { check_is_loaded(); return _handler_count; } | |
161 int interpreter_invocation_count() const { check_is_loaded(); return _interpreter_invocation_count; } | |
162 int interpreter_throwout_count() const { check_is_loaded(); return _interpreter_throwout_count; } | |
163 | |
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164 // Code size for inlining decisions. |
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165 int code_size_for_inlining(); |
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166 |
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167 bool force_inline() { return get_Method()->force_inline(); } |
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168 bool dont_inline() { return get_Method()->dont_inline(); } |
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169 |
1783 | 170 int comp_level(); |
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171 int highest_osr_comp_level(); |
1783 | 172 |
0 | 173 Bytecodes::Code java_code_at_bci(int bci) { |
174 address bcp = code() + bci; | |
2142 | 175 return Bytecodes::java_code_at(NULL, bcp); |
0 | 176 } |
177 BCEscapeAnalyzer *get_bcea(); | |
178 ciMethodBlocks *get_method_blocks(); | |
179 | |
180 bool has_linenumber_table() const; // length unknown until decompression | |
181 u_char* compressed_linenumber_table() const; // not preserved by gc | |
182 | |
183 int line_number_from_bci(int bci) const; | |
184 | |
185 // Runtime information. | |
186 int vtable_index(); | |
1692 | 187 #ifdef SHARK |
188 int itable_index(); | |
189 #endif // SHARK | |
0 | 190 address native_entry(); |
191 address interpreter_entry(); | |
192 | |
193 // Analysis and profiling. | |
194 // | |
195 // Usage note: liveness_at_bci and init_vars should be wrapped in ResourceMarks. | |
196 bool uses_monitors() const { return _uses_monitors; } // this one should go away, it has a misleading name | |
197 bool has_monitor_bytecodes() const { return _uses_monitors; } | |
198 bool has_balanced_monitors(); | |
199 | |
991 | 200 // Returns a bitmap indicating which locals are required to be |
201 // maintained as live for deopt. raw_liveness_at_bci is always the | |
202 // direct output of the liveness computation while liveness_at_bci | |
203 // may mark all locals as live to improve support for debugging Java | |
204 // code by maintaining the state of as many locals as possible. | |
205 MethodLivenessResult raw_liveness_at_bci(int bci); | |
0 | 206 MethodLivenessResult liveness_at_bci(int bci); |
207 | |
208 // Get the interpreters viewpoint on oop liveness. MethodLiveness is | |
209 // conservative in the sense that it may consider locals to be live which | |
210 // cannot be live, like in the case where a local could contain an oop or | |
211 // a primitive along different paths. In that case the local must be | |
212 // dead when those paths merge. Since the interpreter's viewpoint is | |
213 // used when gc'ing an interpreter frame we need to use its viewpoint | |
214 // during OSR when loading the locals. | |
215 | |
216 BitMap live_local_oops_at_bci(int bci); | |
217 | |
218 #ifdef COMPILER1 | |
219 const BitMap bci_block_start(); | |
220 #endif | |
221 | |
222 ciTypeFlow* get_flow_analysis(); | |
223 ciTypeFlow* get_osr_flow_analysis(int osr_bci); // alternate entry point | |
224 ciCallProfile call_profile_at_bci(int bci); | |
225 int interpreter_call_site_count(int bci); | |
226 | |
227 // Given a certain calling environment, find the monomorphic target | |
228 // for the call. Return NULL if the call is not monomorphic in | |
229 // its calling environment. | |
230 ciMethod* find_monomorphic_target(ciInstanceKlass* caller, | |
231 ciInstanceKlass* callee_holder, | |
232 ciInstanceKlass* actual_receiver); | |
233 | |
234 // Given a known receiver klass, find the target for the call. | |
235 // Return NULL if the call has no target or is abstract. | |
236 ciMethod* resolve_invoke(ciKlass* caller, ciKlass* exact_receiver); | |
237 | |
238 // Find the proper vtable index to invoke this method. | |
239 int resolve_vtable_index(ciKlass* caller, ciKlass* receiver); | |
240 | |
241 // Compilation directives | |
242 bool will_link(ciKlass* accessing_klass, | |
243 ciKlass* declared_method_holder, | |
244 Bytecodes::Code bc); | |
245 bool should_exclude(); | |
246 bool should_inline(); | |
247 bool should_not_inline(); | |
248 bool should_print_assembly(); | |
249 bool break_at_execute(); | |
250 bool has_option(const char *option); | |
251 bool can_be_compiled(); | |
252 bool can_be_osr_compiled(int entry_bci); | |
253 void set_not_compilable(); | |
254 bool has_compiled_code(); | |
1783 | 255 int instructions_size(int comp_level = CompLevel_any); |
0 | 256 void log_nmethod_identity(xmlStream* log); |
257 bool is_not_reached(int bci); | |
258 bool was_executed_more_than(int times); | |
259 bool has_unloaded_classes_in_signature(); | |
260 bool is_klass_loaded(int refinfo_index, bool must_be_resolved) const; | |
261 bool check_call(int refinfo_index, bool is_static) const; | |
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262 bool ensure_method_data(); // make sure it exists in the VM also |
0 | 263 int scale_count(int count, float prof_factor = 1.); // make MDO count commensurate with IIC |
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265 // JSR 292 support |
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266 bool is_method_handle_intrinsic() const; |
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267 bool is_compiled_lambda_form() const; |
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268 bool has_member_arg() const; |
0 | 269 |
270 // What kind of ciObject is this? | |
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271 bool is_method() const { return true; } |
0 | 272 |
273 // Java access flags | |
274 bool is_public () const { return flags().is_public(); } | |
275 bool is_private () const { return flags().is_private(); } | |
276 bool is_protected () const { return flags().is_protected(); } | |
277 bool is_static () const { return flags().is_static(); } | |
278 bool is_final () const { return flags().is_final(); } | |
279 bool is_synchronized() const { return flags().is_synchronized(); } | |
280 bool is_native () const { return flags().is_native(); } | |
281 bool is_interface () const { return flags().is_interface(); } | |
282 bool is_abstract () const { return flags().is_abstract(); } | |
283 bool is_strict () const { return flags().is_strict(); } | |
284 | |
285 // Other flags | |
286 bool is_empty_method() const; | |
287 bool is_vanilla_constructor() const; | |
288 bool is_final_method() const { return is_final() || holder()->is_final(); } | |
289 bool has_loops () const; | |
290 bool has_jsrs () const; | |
291 bool is_accessor () const; | |
292 bool is_initializer () const; | |
293 bool can_be_statically_bound() const { return _can_be_statically_bound; } | |
294 | |
295 // Print the bytecodes of this method. | |
296 void print_codes_on(outputStream* st); | |
297 void print_codes() { | |
298 print_codes_on(tty); | |
299 } | |
300 void print_codes_on(int from, int to, outputStream* st); | |
301 | |
302 // Print the name of this method in various incarnations. | |
303 void print_name(outputStream* st = tty); | |
304 void print_short_name(outputStream* st = tty); | |
305 }; | |
1972 | 306 |
307 #endif // SHARE_VM_CI_CIMETHOD_HPP |