Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethod.hpp @ 1293:51db1e4b379d
6932536: JSR 292 modified JDK MethodHandlesTest fails on x86_64
Summary: A modified MethodHandlesTest revealed two bugs on x86_64.
Reviewed-by: never, jrose
author | twisti |
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date | Mon, 08 Mar 2010 04:46:30 -0800 |
parents | cd37471eaecc |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
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2 * Copyright 1999-2010 Sun Microsystems, Inc. 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 * | |
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; | |
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41 friend class ciBytecodeStream; |
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42 friend class ciMethodHandle; |
0 | 43 |
44 private: | |
45 // General method information. | |
46 ciFlags _flags; | |
47 ciSymbol* _name; | |
48 ciInstanceKlass* _holder; | |
49 ciSignature* _signature; | |
50 ciMethodData* _method_data; | |
51 BCEscapeAnalyzer* _bcea; | |
52 ciMethodBlocks* _method_blocks; | |
53 | |
54 // Code attributes. | |
55 int _code_size; | |
56 int _max_stack; | |
57 int _max_locals; | |
58 vmIntrinsics::ID _intrinsic_id; | |
59 int _handler_count; | |
60 int _interpreter_invocation_count; | |
61 int _interpreter_throwout_count; | |
62 | |
63 bool _uses_monitors; | |
64 bool _balanced_monitors; | |
65 bool _is_compilable; | |
66 bool _can_be_statically_bound; | |
67 | |
68 // Lazy fields, filled in on demand | |
69 address _code; | |
70 ciExceptionHandler** _exception_handlers; | |
71 | |
72 // Optional liveness analyzer. | |
73 MethodLiveness* _liveness; | |
74 #ifdef COMPILER2 | |
75 ciTypeFlow* _flow; | |
76 #endif | |
77 | |
78 ciMethod(methodHandle h_m); | |
79 ciMethod(ciInstanceKlass* holder, ciSymbol* name, ciSymbol* signature); | |
80 | |
81 methodOop get_methodOop() const { | |
82 methodOop m = (methodOop)get_oop(); | |
83 assert(m != NULL, "illegal use of unloaded method"); | |
84 return m; | |
85 } | |
86 | |
87 oop loader() const { return _holder->loader(); } | |
88 | |
89 const char* type_string() { return "ciMethod"; } | |
90 | |
91 void print_impl(outputStream* st); | |
92 | |
93 void load_code(); | |
94 | |
95 void check_is_loaded() const { assert(is_loaded(), "not loaded"); } | |
96 | |
97 void build_method_data(methodHandle h_m); | |
98 | |
99 void code_at_put(int bci, Bytecodes::Code code) { | |
100 Bytecodes::check(code); | |
101 assert(0 <= bci && bci < code_size(), "valid bci"); | |
102 address bcp = _code + bci; | |
103 *bcp = code; | |
104 } | |
105 | |
106 public: | |
107 // Basic method information. | |
108 ciFlags flags() const { check_is_loaded(); return _flags; } | |
109 ciSymbol* name() const { return _name; } | |
110 ciInstanceKlass* holder() const { return _holder; } | |
111 ciMethodData* method_data(); | |
112 | |
113 // Signature information. | |
114 ciSignature* signature() const { return _signature; } | |
115 ciType* return_type() const { return _signature->return_type(); } | |
116 int arg_size_no_receiver() const { return _signature->size(); } | |
117 int arg_size() const { return _signature->size() + (_flags.is_static() ? 0 : 1); } | |
118 | |
119 // Method code and related information. | |
120 address code() { if (_code == NULL) load_code(); return _code; } | |
121 int code_size() const { check_is_loaded(); return _code_size; } | |
122 int max_stack() const { check_is_loaded(); return _max_stack; } | |
123 int max_locals() const { check_is_loaded(); return _max_locals; } | |
124 vmIntrinsics::ID intrinsic_id() const { check_is_loaded(); return _intrinsic_id; } | |
125 bool has_exception_handlers() const { check_is_loaded(); return _handler_count > 0; } | |
126 int exception_table_length() const { check_is_loaded(); return _handler_count; } | |
127 int interpreter_invocation_count() const { check_is_loaded(); return _interpreter_invocation_count; } | |
128 int interpreter_throwout_count() const { check_is_loaded(); return _interpreter_throwout_count; } | |
129 | |
130 Bytecodes::Code java_code_at_bci(int bci) { | |
131 address bcp = code() + bci; | |
132 return Bytecodes::java_code_at(bcp); | |
133 } | |
134 BCEscapeAnalyzer *get_bcea(); | |
135 ciMethodBlocks *get_method_blocks(); | |
136 | |
137 bool has_linenumber_table() const; // length unknown until decompression | |
138 u_char* compressed_linenumber_table() const; // not preserved by gc | |
139 | |
140 int line_number_from_bci(int bci) const; | |
141 | |
142 // Runtime information. | |
143 int vtable_index(); | |
144 address native_entry(); | |
145 address interpreter_entry(); | |
146 | |
147 // Analysis and profiling. | |
148 // | |
149 // Usage note: liveness_at_bci and init_vars should be wrapped in ResourceMarks. | |
150 bool uses_monitors() const { return _uses_monitors; } // this one should go away, it has a misleading name | |
151 bool has_monitor_bytecodes() const { return _uses_monitors; } | |
152 bool has_balanced_monitors(); | |
153 | |
991 | 154 // Returns a bitmap indicating which locals are required to be |
155 // maintained as live for deopt. raw_liveness_at_bci is always the | |
156 // direct output of the liveness computation while liveness_at_bci | |
157 // may mark all locals as live to improve support for debugging Java | |
158 // code by maintaining the state of as many locals as possible. | |
159 MethodLivenessResult raw_liveness_at_bci(int bci); | |
0 | 160 MethodLivenessResult liveness_at_bci(int bci); |
161 | |
162 // Get the interpreters viewpoint on oop liveness. MethodLiveness is | |
163 // conservative in the sense that it may consider locals to be live which | |
164 // cannot be live, like in the case where a local could contain an oop or | |
165 // a primitive along different paths. In that case the local must be | |
166 // dead when those paths merge. Since the interpreter's viewpoint is | |
167 // used when gc'ing an interpreter frame we need to use its viewpoint | |
168 // during OSR when loading the locals. | |
169 | |
170 BitMap live_local_oops_at_bci(int bci); | |
171 | |
172 #ifdef COMPILER1 | |
173 const BitMap bci_block_start(); | |
174 #endif | |
175 | |
176 ciTypeFlow* get_flow_analysis(); | |
177 ciTypeFlow* get_osr_flow_analysis(int osr_bci); // alternate entry point | |
178 ciCallProfile call_profile_at_bci(int bci); | |
179 int interpreter_call_site_count(int bci); | |
180 | |
181 // Given a certain calling environment, find the monomorphic target | |
182 // for the call. Return NULL if the call is not monomorphic in | |
183 // its calling environment. | |
184 ciMethod* find_monomorphic_target(ciInstanceKlass* caller, | |
185 ciInstanceKlass* callee_holder, | |
186 ciInstanceKlass* actual_receiver); | |
187 | |
188 // Given a known receiver klass, find the target for the call. | |
189 // Return NULL if the call has no target or is abstract. | |
190 ciMethod* resolve_invoke(ciKlass* caller, ciKlass* exact_receiver); | |
191 | |
192 // Find the proper vtable index to invoke this method. | |
193 int resolve_vtable_index(ciKlass* caller, ciKlass* receiver); | |
194 | |
195 // Compilation directives | |
196 bool will_link(ciKlass* accessing_klass, | |
197 ciKlass* declared_method_holder, | |
198 Bytecodes::Code bc); | |
199 bool should_exclude(); | |
200 bool should_inline(); | |
201 bool should_not_inline(); | |
202 bool should_print_assembly(); | |
203 bool break_at_execute(); | |
204 bool has_option(const char *option); | |
205 bool can_be_compiled(); | |
206 bool can_be_osr_compiled(int entry_bci); | |
207 void set_not_compilable(); | |
208 bool has_compiled_code(); | |
209 int instructions_size(); | |
210 void log_nmethod_identity(xmlStream* log); | |
211 bool is_not_reached(int bci); | |
212 bool was_executed_more_than(int times); | |
213 bool has_unloaded_classes_in_signature(); | |
214 bool is_klass_loaded(int refinfo_index, bool must_be_resolved) const; | |
215 bool check_call(int refinfo_index, bool is_static) const; | |
216 void build_method_data(); // make sure it exists in the VM also | |
217 int scale_count(int count, float prof_factor = 1.); // make MDO count commensurate with IIC | |
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218 |
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219 // JSR 292 support |
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220 bool is_method_handle_invoke() const; |
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221 bool is_method_handle_adapter() const; |
710 | 222 ciInstance* method_handle_type(); |
0 | 223 |
224 // What kind of ciObject is this? | |
225 bool is_method() { return true; } | |
226 | |
227 // Java access flags | |
228 bool is_public () const { return flags().is_public(); } | |
229 bool is_private () const { return flags().is_private(); } | |
230 bool is_protected () const { return flags().is_protected(); } | |
231 bool is_static () const { return flags().is_static(); } | |
232 bool is_final () const { return flags().is_final(); } | |
233 bool is_synchronized() const { return flags().is_synchronized(); } | |
234 bool is_native () const { return flags().is_native(); } | |
235 bool is_interface () const { return flags().is_interface(); } | |
236 bool is_abstract () const { return flags().is_abstract(); } | |
237 bool is_strict () const { return flags().is_strict(); } | |
238 | |
239 // Other flags | |
240 bool is_empty_method() const; | |
241 bool is_vanilla_constructor() const; | |
242 bool is_final_method() const { return is_final() || holder()->is_final(); } | |
243 bool has_loops () const; | |
244 bool has_jsrs () const; | |
245 bool is_accessor () const; | |
246 bool is_initializer () const; | |
247 bool can_be_statically_bound() const { return _can_be_statically_bound; } | |
248 | |
249 // Print the bytecodes of this method. | |
250 void print_codes_on(outputStream* st); | |
251 void print_codes() { | |
252 print_codes_on(tty); | |
253 } | |
254 void print_codes_on(int from, int to, outputStream* st); | |
255 | |
256 // Print the name of this method in various incarnations. | |
257 void print_name(outputStream* st = tty); | |
258 void print_short_name(outputStream* st = tty); | |
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259 |
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260 methodOop get_method_handle_target() { |
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261 klassOop receiver_limit_oop = NULL; |
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262 int flags = 0; |
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263 return MethodHandles::decode_method(get_oop(), receiver_limit_oop, flags); |
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264 } |
0 | 265 }; |