Mercurial > hg > truffle
comparison src/share/vm/ci/ciMethod.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | e5b0439ef4ae |
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1 /* | |
2 * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 class ciMethodBlocks; | |
26 class MethodLiveness; | |
27 class BitMap; | |
28 class Arena; | |
29 class BCEscapeAnalyzer; | |
30 | |
31 | |
32 // ciMethod | |
33 // | |
34 // This class represents a methodOop in the HotSpot virtual | |
35 // machine. | |
36 class ciMethod : public ciObject { | |
37 friend class CompileBroker; | |
38 CI_PACKAGE_ACCESS | |
39 friend class ciEnv; | |
40 friend class ciExceptionHandlerStream; | |
41 | |
42 private: | |
43 // General method information. | |
44 ciFlags _flags; | |
45 ciSymbol* _name; | |
46 ciInstanceKlass* _holder; | |
47 ciSignature* _signature; | |
48 ciMethodData* _method_data; | |
49 BCEscapeAnalyzer* _bcea; | |
50 ciMethodBlocks* _method_blocks; | |
51 | |
52 // Code attributes. | |
53 int _code_size; | |
54 int _max_stack; | |
55 int _max_locals; | |
56 vmIntrinsics::ID _intrinsic_id; | |
57 int _handler_count; | |
58 int _interpreter_invocation_count; | |
59 int _interpreter_throwout_count; | |
60 | |
61 bool _uses_monitors; | |
62 bool _balanced_monitors; | |
63 bool _is_compilable; | |
64 bool _can_be_statically_bound; | |
65 | |
66 // Lazy fields, filled in on demand | |
67 address _code; | |
68 ciExceptionHandler** _exception_handlers; | |
69 | |
70 // Optional liveness analyzer. | |
71 MethodLiveness* _liveness; | |
72 #ifdef COMPILER2 | |
73 ciTypeFlow* _flow; | |
74 #endif | |
75 | |
76 ciMethod(methodHandle h_m); | |
77 ciMethod(ciInstanceKlass* holder, ciSymbol* name, ciSymbol* signature); | |
78 | |
79 methodOop get_methodOop() const { | |
80 methodOop m = (methodOop)get_oop(); | |
81 assert(m != NULL, "illegal use of unloaded method"); | |
82 return m; | |
83 } | |
84 | |
85 oop loader() const { return _holder->loader(); } | |
86 | |
87 const char* type_string() { return "ciMethod"; } | |
88 | |
89 void print_impl(outputStream* st); | |
90 | |
91 void load_code(); | |
92 | |
93 void check_is_loaded() const { assert(is_loaded(), "not loaded"); } | |
94 | |
95 void build_method_data(methodHandle h_m); | |
96 | |
97 void code_at_put(int bci, Bytecodes::Code code) { | |
98 Bytecodes::check(code); | |
99 assert(0 <= bci && bci < code_size(), "valid bci"); | |
100 address bcp = _code + bci; | |
101 *bcp = code; | |
102 } | |
103 | |
104 public: | |
105 // Basic method information. | |
106 ciFlags flags() const { check_is_loaded(); return _flags; } | |
107 ciSymbol* name() const { return _name; } | |
108 ciInstanceKlass* holder() const { return _holder; } | |
109 ciMethodData* method_data(); | |
110 | |
111 // Signature information. | |
112 ciSignature* signature() const { return _signature; } | |
113 ciType* return_type() const { return _signature->return_type(); } | |
114 int arg_size_no_receiver() const { return _signature->size(); } | |
115 int arg_size() const { return _signature->size() + (_flags.is_static() ? 0 : 1); } | |
116 | |
117 // Method code and related information. | |
118 address code() { if (_code == NULL) load_code(); return _code; } | |
119 int code_size() const { check_is_loaded(); return _code_size; } | |
120 int max_stack() const { check_is_loaded(); return _max_stack; } | |
121 int max_locals() const { check_is_loaded(); return _max_locals; } | |
122 vmIntrinsics::ID intrinsic_id() const { check_is_loaded(); return _intrinsic_id; } | |
123 bool has_exception_handlers() const { check_is_loaded(); return _handler_count > 0; } | |
124 int exception_table_length() const { check_is_loaded(); return _handler_count; } | |
125 int interpreter_invocation_count() const { check_is_loaded(); return _interpreter_invocation_count; } | |
126 int interpreter_throwout_count() const { check_is_loaded(); return _interpreter_throwout_count; } | |
127 | |
128 Bytecodes::Code java_code_at_bci(int bci) { | |
129 address bcp = code() + bci; | |
130 return Bytecodes::java_code_at(bcp); | |
131 } | |
132 BCEscapeAnalyzer *get_bcea(); | |
133 ciMethodBlocks *get_method_blocks(); | |
134 | |
135 bool has_linenumber_table() const; // length unknown until decompression | |
136 u_char* compressed_linenumber_table() const; // not preserved by gc | |
137 | |
138 int line_number_from_bci(int bci) const; | |
139 | |
140 // Runtime information. | |
141 int vtable_index(); | |
142 address native_entry(); | |
143 address interpreter_entry(); | |
144 | |
145 // Analysis and profiling. | |
146 // | |
147 // Usage note: liveness_at_bci and init_vars should be wrapped in ResourceMarks. | |
148 bool uses_monitors() const { return _uses_monitors; } // this one should go away, it has a misleading name | |
149 bool has_monitor_bytecodes() const { return _uses_monitors; } | |
150 bool has_balanced_monitors(); | |
151 | |
152 MethodLivenessResult liveness_at_bci(int bci); | |
153 | |
154 // Get the interpreters viewpoint on oop liveness. MethodLiveness is | |
155 // conservative in the sense that it may consider locals to be live which | |
156 // cannot be live, like in the case where a local could contain an oop or | |
157 // a primitive along different paths. In that case the local must be | |
158 // dead when those paths merge. Since the interpreter's viewpoint is | |
159 // used when gc'ing an interpreter frame we need to use its viewpoint | |
160 // during OSR when loading the locals. | |
161 | |
162 BitMap live_local_oops_at_bci(int bci); | |
163 | |
164 #ifdef COMPILER1 | |
165 const BitMap bci_block_start(); | |
166 #endif | |
167 | |
168 ciTypeFlow* get_flow_analysis(); | |
169 ciTypeFlow* get_osr_flow_analysis(int osr_bci); // alternate entry point | |
170 ciCallProfile call_profile_at_bci(int bci); | |
171 int interpreter_call_site_count(int bci); | |
172 | |
173 // Given a certain calling environment, find the monomorphic target | |
174 // for the call. Return NULL if the call is not monomorphic in | |
175 // its calling environment. | |
176 ciMethod* find_monomorphic_target(ciInstanceKlass* caller, | |
177 ciInstanceKlass* callee_holder, | |
178 ciInstanceKlass* actual_receiver); | |
179 | |
180 // Given a known receiver klass, find the target for the call. | |
181 // Return NULL if the call has no target or is abstract. | |
182 ciMethod* resolve_invoke(ciKlass* caller, ciKlass* exact_receiver); | |
183 | |
184 // Find the proper vtable index to invoke this method. | |
185 int resolve_vtable_index(ciKlass* caller, ciKlass* receiver); | |
186 | |
187 // Compilation directives | |
188 bool will_link(ciKlass* accessing_klass, | |
189 ciKlass* declared_method_holder, | |
190 Bytecodes::Code bc); | |
191 bool should_exclude(); | |
192 bool should_inline(); | |
193 bool should_not_inline(); | |
194 bool should_print_assembly(); | |
195 bool break_at_execute(); | |
196 bool has_option(const char *option); | |
197 bool can_be_compiled(); | |
198 bool can_be_osr_compiled(int entry_bci); | |
199 void set_not_compilable(); | |
200 bool has_compiled_code(); | |
201 int instructions_size(); | |
202 void log_nmethod_identity(xmlStream* log); | |
203 bool is_not_reached(int bci); | |
204 bool was_executed_more_than(int times); | |
205 bool has_unloaded_classes_in_signature(); | |
206 bool is_klass_loaded(int refinfo_index, bool must_be_resolved) const; | |
207 bool check_call(int refinfo_index, bool is_static) const; | |
208 void build_method_data(); // make sure it exists in the VM also | |
209 int scale_count(int count, float prof_factor = 1.); // make MDO count commensurate with IIC | |
210 | |
211 // What kind of ciObject is this? | |
212 bool is_method() { return true; } | |
213 | |
214 // Java access flags | |
215 bool is_public () const { return flags().is_public(); } | |
216 bool is_private () const { return flags().is_private(); } | |
217 bool is_protected () const { return flags().is_protected(); } | |
218 bool is_static () const { return flags().is_static(); } | |
219 bool is_final () const { return flags().is_final(); } | |
220 bool is_synchronized() const { return flags().is_synchronized(); } | |
221 bool is_native () const { return flags().is_native(); } | |
222 bool is_interface () const { return flags().is_interface(); } | |
223 bool is_abstract () const { return flags().is_abstract(); } | |
224 bool is_strict () const { return flags().is_strict(); } | |
225 | |
226 // Other flags | |
227 bool is_empty_method() const; | |
228 bool is_vanilla_constructor() const; | |
229 bool is_final_method() const { return is_final() || holder()->is_final(); } | |
230 bool has_loops () const; | |
231 bool has_jsrs () const; | |
232 bool is_accessor () const; | |
233 bool is_initializer () const; | |
234 bool can_be_statically_bound() const { return _can_be_statically_bound; } | |
235 | |
236 // Print the bytecodes of this method. | |
237 void print_codes_on(outputStream* st); | |
238 void print_codes() { | |
239 print_codes_on(tty); | |
240 } | |
241 void print_codes_on(int from, int to, outputStream* st); | |
242 | |
243 // Print the name of this method in various incarnations. | |
244 void print_name(outputStream* st = tty); | |
245 void print_short_name(outputStream* st = tty); | |
246 }; |