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--- old/src/share/vm/ci/ciMethod.hpp
+++ new/src/share/vm/ci/ciMethod.hpp
1 1 /*
2 2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 *
23 23 */
24 24
25 25 #ifndef SHARE_VM_CI_CIMETHOD_HPP
26 26 #define SHARE_VM_CI_CIMETHOD_HPP
27 27
28 28 #include "ci/ciFlags.hpp"
29 29 #include "ci/ciInstanceKlass.hpp"
30 30 #include "ci/ciObject.hpp"
31 31 #include "ci/ciSignature.hpp"
32 32 #include "compiler/methodLiveness.hpp"
33 33 #include "prims/methodHandles.hpp"
34 34 #include "utilities/bitMap.hpp"
35 35
36 36 class ciMethodBlocks;
37 37 class MethodLiveness;
38 38 class BitMap;
39 39 class Arena;
40 40 class BCEscapeAnalyzer;
41 41
42 42
43 43 // ciMethod
44 44 //
45 45 // This class represents a methodOop in the HotSpot virtual
46 46 // machine.
47 47 class ciMethod : public ciObject {
48 48 friend class CompileBroker;
49 49 CI_PACKAGE_ACCESS
50 50 friend class ciEnv;
51 51 friend class ciExceptionHandlerStream;
52 52 friend class ciBytecodeStream;
53 53 friend class ciMethodHandle;
54 54
55 55 private:
56 56 // General method information.
57 57 ciFlags _flags;
58 58 ciSymbol* _name;
59 59 ciInstanceKlass* _holder;
60 60 ciSignature* _signature;
61 61 ciMethodData* _method_data;
62 62 ciMethodBlocks* _method_blocks;
63 63
64 64 // Code attributes.
65 65 int _code_size;
66 66 int _max_stack;
67 67 int _max_locals;
68 68 vmIntrinsics::ID _intrinsic_id;
69 69 int _handler_count;
70 70 int _interpreter_invocation_count;
71 71 int _interpreter_throwout_count;
72 72
73 73 bool _uses_monitors;
74 74 bool _balanced_monitors;
75 75 bool _is_c1_compilable;
76 76 bool _is_c2_compilable;
77 77 bool _can_be_statically_bound;
78 78
79 79 // Lazy fields, filled in on demand
80 80 address _code;
81 81 ciExceptionHandler** _exception_handlers;
82 82
83 83 // Optional liveness analyzer.
84 84 MethodLiveness* _liveness;
85 85 #if defined(COMPILER2) || defined(SHARK)
86 86 ciTypeFlow* _flow;
87 87 BCEscapeAnalyzer* _bcea;
88 88 #endif
89 89
90 90 ciMethod(methodHandle h_m);
91 91 ciMethod(ciInstanceKlass* holder, ciSymbol* name, ciSymbol* signature, ciInstanceKlass* accessor);
92 92
93 93 methodOop get_methodOop() const {
94 94 methodOop m = (methodOop)get_oop();
95 95 assert(m != NULL, "illegal use of unloaded method");
96 96 return m;
97 97 }
98 98
99 99 oop loader() const { return _holder->loader(); }
100 100
101 101 const char* type_string() { return "ciMethod"; }
102 102
103 103 void print_impl(outputStream* st);
104 104
105 105 void load_code();
106 106
107 107 void check_is_loaded() const { assert(is_loaded(), "not loaded"); }
108 108
109 109 bool ensure_method_data(methodHandle h_m);
110 110
111 111 void code_at_put(int bci, Bytecodes::Code code) {
112 112 Bytecodes::check(code);
113 113 assert(0 <= bci && bci < code_size(), "valid bci");
114 114 address bcp = _code + bci;
115 115 *bcp = code;
116 116 }
117 117
118 118 public:
119 119 // Basic method information.
120 120 ciFlags flags() const { check_is_loaded(); return _flags; }
121 121 ciSymbol* name() const { return _name; }
122 122 ciInstanceKlass* holder() const { return _holder; }
123 123 ciMethodData* method_data();
124 124 ciMethodData* method_data_or_null();
125 125
126 126 // Signature information.
127 127 ciSignature* signature() const { return _signature; }
128 128 ciType* return_type() const { return _signature->return_type(); }
129 129 int arg_size_no_receiver() const { return _signature->size(); }
130 130 // Can only be used on loaded ciMethods
131 131 int arg_size() const {
132 132 check_is_loaded();
133 133 return _signature->size() + (_flags.is_static() ? 0 : 1);
134 134 }
135 135 // Report the number of elements on stack when invoking this method.
136 136 // This is different than the regular arg_size because invokdynamic
137 137 // has an implicit receiver.
138 138 int invoke_arg_size(Bytecodes::Code code) const {
139 139 int arg_size = _signature->size();
140 140 // Add a receiver argument, maybe:
141 141 if (code != Bytecodes::_invokestatic &&
142 142 code != Bytecodes::_invokedynamic) {
143 143 arg_size++;
144 144 }
145 145 return arg_size;
146 146 }
147 147
148 148
149 149 // Method code and related information.
150 150 address code() { if (_code == NULL) load_code(); return _code; }
151 151 int code_size() const { check_is_loaded(); return _code_size; }
152 152 int max_stack() const { check_is_loaded(); return _max_stack; }
153 153 int max_locals() const { check_is_loaded(); return _max_locals; }
154 154 vmIntrinsics::ID intrinsic_id() const { check_is_loaded(); return _intrinsic_id; }
155 155 bool has_exception_handlers() const { check_is_loaded(); return _handler_count > 0; }
156 156 int exception_table_length() const { check_is_loaded(); return _handler_count; }
157 157 int interpreter_invocation_count() const { check_is_loaded(); return _interpreter_invocation_count; }
158 158 int interpreter_throwout_count() const { check_is_loaded(); return _interpreter_throwout_count; }
159 159
160 160 // Code size for inlining decisions.
161 161 int code_size_for_inlining();
162 162
163 163 int comp_level();
164 164 int highest_osr_comp_level();
165 165
166 166 Bytecodes::Code java_code_at_bci(int bci) {
167 167 address bcp = code() + bci;
168 168 return Bytecodes::java_code_at(NULL, bcp);
169 169 }
170 170 BCEscapeAnalyzer *get_bcea();
171 171 ciMethodBlocks *get_method_blocks();
172 172
173 173 bool has_linenumber_table() const; // length unknown until decompression
174 174 u_char* compressed_linenumber_table() const; // not preserved by gc
175 175
176 176 int line_number_from_bci(int bci) const;
177 177
178 178 // Runtime information.
179 179 int vtable_index();
180 180 #ifdef SHARK
181 181 int itable_index();
182 182 #endif // SHARK
183 183 address native_entry();
184 184 address interpreter_entry();
185 185
186 186 // Analysis and profiling.
187 187 //
188 188 // Usage note: liveness_at_bci and init_vars should be wrapped in ResourceMarks.
189 189 bool uses_monitors() const { return _uses_monitors; } // this one should go away, it has a misleading name
190 190 bool has_monitor_bytecodes() const { return _uses_monitors; }
191 191 bool has_balanced_monitors();
192 192
193 193 // Returns a bitmap indicating which locals are required to be
194 194 // maintained as live for deopt. raw_liveness_at_bci is always the
195 195 // direct output of the liveness computation while liveness_at_bci
196 196 // may mark all locals as live to improve support for debugging Java
197 197 // code by maintaining the state of as many locals as possible.
198 198 MethodLivenessResult raw_liveness_at_bci(int bci);
199 199 MethodLivenessResult liveness_at_bci(int bci);
200 200
201 201 // Get the interpreters viewpoint on oop liveness. MethodLiveness is
202 202 // conservative in the sense that it may consider locals to be live which
203 203 // cannot be live, like in the case where a local could contain an oop or
204 204 // a primitive along different paths. In that case the local must be
205 205 // dead when those paths merge. Since the interpreter's viewpoint is
206 206 // used when gc'ing an interpreter frame we need to use its viewpoint
207 207 // during OSR when loading the locals.
208 208
209 209 BitMap live_local_oops_at_bci(int bci);
210 210
211 211 #ifdef COMPILER1
212 212 const BitMap bci_block_start();
213 213 #endif
214 214
215 215 ciTypeFlow* get_flow_analysis();
216 216 ciTypeFlow* get_osr_flow_analysis(int osr_bci); // alternate entry point
217 217 ciCallProfile call_profile_at_bci(int bci);
218 218 int interpreter_call_site_count(int bci);
219 219
220 220 // Given a certain calling environment, find the monomorphic target
221 221 // for the call. Return NULL if the call is not monomorphic in
222 222 // its calling environment.
223 223 ciMethod* find_monomorphic_target(ciInstanceKlass* caller,
224 224 ciInstanceKlass* callee_holder,
225 225 ciInstanceKlass* actual_receiver);
226 226
227 227 // Given a known receiver klass, find the target for the call.
228 228 // Return NULL if the call has no target or is abstract.
229 229 ciMethod* resolve_invoke(ciKlass* caller, ciKlass* exact_receiver);
230 230
231 231 // Find the proper vtable index to invoke this method.
232 232 int resolve_vtable_index(ciKlass* caller, ciKlass* receiver);
233 233
234 234 // Compilation directives
235 235 bool will_link(ciKlass* accessing_klass,
236 236 ciKlass* declared_method_holder,
237 237 Bytecodes::Code bc);
238 238 bool should_exclude();
239 239 bool should_inline();
240 240 bool should_not_inline();
241 241 bool should_print_assembly();
242 242 bool break_at_execute();
243 243 bool has_option(const char *option);
244 244 bool can_be_compiled();
245 245 bool can_be_osr_compiled(int entry_bci);
246 246 void set_not_compilable();
247 247 bool has_compiled_code();
248 248 int instructions_size(int comp_level = CompLevel_any);
249 249 void log_nmethod_identity(xmlStream* log);
250 250 bool is_not_reached(int bci);
251 251 bool was_executed_more_than(int times);
252 252 bool has_unloaded_classes_in_signature();
253 253 bool is_klass_loaded(int refinfo_index, bool must_be_resolved) const;
254 254 bool check_call(int refinfo_index, bool is_static) const;
255 255 bool ensure_method_data(); // make sure it exists in the VM also
256 256 int scale_count(int count, float prof_factor = 1.); // make MDO count commensurate with IIC
257 257
258 258 // JSR 292 support
259 259 bool is_method_handle_invoke() const;
260 260 bool is_method_handle_adapter() const;
261 261 ciInstance* method_handle_type();
262 262
263 263 // What kind of ciObject is this?
264 264 bool is_method() { return true; }
265 265
266 266 // Java access flags
267 267 bool is_public () const { return flags().is_public(); }
268 268 bool is_private () const { return flags().is_private(); }
269 269 bool is_protected () const { return flags().is_protected(); }
270 270 bool is_static () const { return flags().is_static(); }
271 271 bool is_final () const { return flags().is_final(); }
272 272 bool is_synchronized() const { return flags().is_synchronized(); }
273 273 bool is_native () const { return flags().is_native(); }
274 274 bool is_interface () const { return flags().is_interface(); }
275 275 bool is_abstract () const { return flags().is_abstract(); }
276 276 bool is_strict () const { return flags().is_strict(); }
277 277
278 278 // Other flags
279 279 bool is_empty_method() const;
280 280 bool is_vanilla_constructor() const;
281 281 bool is_final_method() const { return is_final() || holder()->is_final(); }
282 282 bool has_loops () const;
283 283 bool has_jsrs () const;
284 284 bool is_accessor () const;
285 285 bool is_initializer () const;
286 286 bool can_be_statically_bound() const { return _can_be_statically_bound; }
287 287
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288 288 // Print the bytecodes of this method.
289 289 void print_codes_on(outputStream* st);
290 290 void print_codes() {
291 291 print_codes_on(tty);
292 292 }
293 293 void print_codes_on(int from, int to, outputStream* st);
294 294
295 295 // Print the name of this method in various incarnations.
296 296 void print_name(outputStream* st = tty);
297 297 void print_short_name(outputStream* st = tty);
298 -
299 - methodOop get_method_handle_target() {
300 - KlassHandle receiver_limit; int flags = 0;
301 - methodHandle m = MethodHandles::decode_method(get_oop(), receiver_limit, flags);
302 - return m();
303 - }
304 298 };
305 299
306 300 #endif // SHARE_VM_CI_CIMETHOD_HPP
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