Mercurial > hg > truffle
annotate src/share/vm/ci/ciMethod.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | 7f813940ac35 |
children | 18fb7da42534 |
rev | line source |
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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 #include "precompiled.hpp" |
26 #include "ci/ciCallProfile.hpp" | |
27 #include "ci/ciExceptionHandler.hpp" | |
28 #include "ci/ciInstanceKlass.hpp" | |
29 #include "ci/ciMethod.hpp" | |
30 #include "ci/ciMethodBlocks.hpp" | |
31 #include "ci/ciMethodData.hpp" | |
32 #include "ci/ciStreams.hpp" | |
33 #include "ci/ciSymbol.hpp" | |
34 #include "ci/ciUtilities.hpp" | |
35 #include "classfile/systemDictionary.hpp" | |
36 #include "compiler/abstractCompiler.hpp" | |
37 #include "compiler/compilerOracle.hpp" | |
38 #include "compiler/methodLiveness.hpp" | |
39 #include "interpreter/interpreter.hpp" | |
40 #include "interpreter/linkResolver.hpp" | |
41 #include "interpreter/oopMapCache.hpp" | |
42 #include "memory/allocation.inline.hpp" | |
43 #include "memory/resourceArea.hpp" | |
44 #include "oops/generateOopMap.hpp" | |
45 #include "oops/oop.inline.hpp" | |
46 #include "prims/nativeLookup.hpp" | |
47 #include "runtime/deoptimization.hpp" | |
48 #include "utilities/bitMap.inline.hpp" | |
49 #include "utilities/xmlstream.hpp" | |
50 #ifdef COMPILER2 | |
51 #include "ci/bcEscapeAnalyzer.hpp" | |
52 #include "ci/ciTypeFlow.hpp" | |
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53 #include "oops/method.hpp" |
1972 | 54 #endif |
55 #ifdef SHARK | |
56 #include "ci/ciTypeFlow.hpp" | |
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57 #include "oops/method.hpp" |
1972 | 58 #endif |
0 | 59 |
60 // ciMethod | |
61 // | |
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62 // This class represents a Method* in the HotSpot virtual |
0 | 63 // machine. |
64 | |
65 | |
66 // ------------------------------------------------------------------ | |
67 // ciMethod::ciMethod | |
68 // | |
69 // Loaded method. | |
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70 ciMethod::ciMethod(methodHandle h_m) : ciMetadata(h_m()) { |
0 | 71 assert(h_m() != NULL, "no null method"); |
72 | |
73 // These fields are always filled in in loaded methods. | |
74 _flags = ciFlags(h_m()->access_flags()); | |
75 | |
76 // Easy to compute, so fill them in now. | |
77 _max_stack = h_m()->max_stack(); | |
78 _max_locals = h_m()->max_locals(); | |
79 _code_size = h_m()->code_size(); | |
80 _intrinsic_id = h_m()->intrinsic_id(); | |
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81 _handler_count = h_m()->exception_table_length(); |
0 | 82 _uses_monitors = h_m()->access_flags().has_monitor_bytecodes(); |
83 _balanced_monitors = !_uses_monitors || h_m()->access_flags().is_monitor_matching(); | |
1783 | 84 _is_c1_compilable = !h_m()->is_not_c1_compilable(); |
85 _is_c2_compilable = !h_m()->is_not_c2_compilable(); | |
0 | 86 // Lazy fields, filled in on demand. Require allocation. |
87 _code = NULL; | |
88 _exception_handlers = NULL; | |
89 _liveness = NULL; | |
90 _method_blocks = NULL; | |
1692 | 91 #if defined(COMPILER2) || defined(SHARK) |
0 | 92 _flow = NULL; |
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93 _bcea = NULL; |
1692 | 94 #endif // COMPILER2 || SHARK |
0 | 95 |
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96 ciEnv *env = CURRENT_ENV; |
1783 | 97 if (env->jvmti_can_hotswap_or_post_breakpoint() && can_be_compiled()) { |
0 | 98 // 6328518 check hotswap conditions under the right lock. |
99 MutexLocker locker(Compile_lock); | |
100 if (Dependencies::check_evol_method(h_m()) != NULL) { | |
1783 | 101 _is_c1_compilable = false; |
102 _is_c2_compilable = false; | |
0 | 103 } |
104 } else { | |
105 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); | |
106 } | |
107 | |
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108 if (InstanceKlass::cast(h_m()->method_holder())->is_linked()) { |
0 | 109 _can_be_statically_bound = h_m()->can_be_statically_bound(); |
110 } else { | |
111 // Have to use a conservative value in this case. | |
112 _can_be_statically_bound = false; | |
113 } | |
114 | |
115 // Adjust the definition of this condition to be more useful: | |
116 // %%% take these conditions into account in vtable generation | |
117 if (!_can_be_statically_bound && h_m()->is_private()) | |
118 _can_be_statically_bound = true; | |
119 if (_can_be_statically_bound && h_m()->is_abstract()) | |
120 _can_be_statically_bound = false; | |
121 | |
122 // generating _signature may allow GC and therefore move m. | |
123 // These fields are always filled in. | |
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124 _name = env->get_symbol(h_m()->name()); |
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125 _holder = env->get_instance_klass(h_m()->method_holder()); |
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126 ciSymbol* sig_symbol = env->get_symbol(h_m()->signature()); |
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127 constantPoolHandle cpool = h_m()->constants(); |
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128 _signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol); |
0 | 129 _method_data = NULL; |
130 // Take a snapshot of these values, so they will be commensurate with the MDO. | |
1783 | 131 if (ProfileInterpreter || TieredCompilation) { |
0 | 132 int invcnt = h_m()->interpreter_invocation_count(); |
133 // if the value overflowed report it as max int | |
134 _interpreter_invocation_count = invcnt < 0 ? max_jint : invcnt ; | |
135 _interpreter_throwout_count = h_m()->interpreter_throwout_count(); | |
136 } else { | |
137 _interpreter_invocation_count = 0; | |
138 _interpreter_throwout_count = 0; | |
139 } | |
140 if (_interpreter_invocation_count == 0) | |
141 _interpreter_invocation_count = 1; | |
142 } | |
143 | |
144 | |
145 // ------------------------------------------------------------------ | |
146 // ciMethod::ciMethod | |
147 // | |
148 // Unloaded method. | |
149 ciMethod::ciMethod(ciInstanceKlass* holder, | |
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150 ciSymbol* name, |
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151 ciSymbol* signature, |
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152 ciInstanceKlass* accessor) : |
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153 ciMetadata((Metadata*)NULL), |
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154 _name( name), |
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155 _holder( holder), |
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156 _intrinsic_id( vmIntrinsics::_none), |
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157 _liveness( NULL), |
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158 _can_be_statically_bound(false), |
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159 _method_blocks( NULL), |
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160 _method_data( NULL) |
1692 | 161 #if defined(COMPILER2) || defined(SHARK) |
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162 , |
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163 _flow( NULL), |
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164 _bcea( NULL) |
1692 | 165 #endif // COMPILER2 || SHARK |
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166 { |
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167 // Usually holder and accessor are the same type but in some cases |
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168 // the holder has the wrong class loader (e.g. invokedynamic call |
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169 // sites) so we pass the accessor. |
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170 _signature = new (CURRENT_ENV->arena()) ciSignature(accessor, constantPoolHandle(), signature); |
0 | 171 } |
172 | |
173 | |
174 // ------------------------------------------------------------------ | |
175 // ciMethod::load_code | |
176 // | |
177 // Load the bytecodes and exception handler table for this method. | |
178 void ciMethod::load_code() { | |
179 VM_ENTRY_MARK; | |
180 assert(is_loaded(), "only loaded methods have code"); | |
181 | |
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182 Method* me = get_Method(); |
0 | 183 Arena* arena = CURRENT_THREAD_ENV->arena(); |
184 | |
185 // Load the bytecodes. | |
186 _code = (address)arena->Amalloc(code_size()); | |
187 memcpy(_code, me->code_base(), code_size()); | |
188 | |
189 // Revert any breakpoint bytecodes in ci's copy | |
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190 if (me->number_of_breakpoints() > 0) { |
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191 BreakpointInfo* bp = InstanceKlass::cast(me->method_holder())->breakpoints(); |
0 | 192 for (; bp != NULL; bp = bp->next()) { |
193 if (bp->match(me)) { | |
194 code_at_put(bp->bci(), bp->orig_bytecode()); | |
195 } | |
196 } | |
197 } | |
198 | |
199 // And load the exception table. | |
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200 ExceptionTable exc_table(me); |
0 | 201 |
202 // Allocate one extra spot in our list of exceptions. This | |
203 // last entry will be used to represent the possibility that | |
204 // an exception escapes the method. See ciExceptionHandlerStream | |
205 // for details. | |
206 _exception_handlers = | |
207 (ciExceptionHandler**)arena->Amalloc(sizeof(ciExceptionHandler*) | |
208 * (_handler_count + 1)); | |
209 if (_handler_count > 0) { | |
210 for (int i=0; i<_handler_count; i++) { | |
211 _exception_handlers[i] = new (arena) ciExceptionHandler( | |
212 holder(), | |
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213 /* start */ exc_table.start_pc(i), |
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214 /* limit */ exc_table.end_pc(i), |
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215 /* goto pc */ exc_table.handler_pc(i), |
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216 /* cp index */ exc_table.catch_type_index(i)); |
0 | 217 } |
218 } | |
219 | |
220 // Put an entry at the end of our list to represent the possibility | |
221 // of exceptional exit. | |
222 _exception_handlers[_handler_count] = | |
223 new (arena) ciExceptionHandler(holder(), 0, code_size(), -1, 0); | |
224 | |
225 if (CIPrintMethodCodes) { | |
226 print_codes(); | |
227 } | |
228 } | |
229 | |
230 | |
231 // ------------------------------------------------------------------ | |
232 // ciMethod::has_linenumber_table | |
233 // | |
234 // length unknown until decompression | |
235 bool ciMethod::has_linenumber_table() const { | |
236 check_is_loaded(); | |
237 VM_ENTRY_MARK; | |
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238 return get_Method()->has_linenumber_table(); |
0 | 239 } |
240 | |
241 | |
242 // ------------------------------------------------------------------ | |
243 // ciMethod::compressed_linenumber_table | |
244 u_char* ciMethod::compressed_linenumber_table() const { | |
245 check_is_loaded(); | |
246 VM_ENTRY_MARK; | |
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247 return get_Method()->compressed_linenumber_table(); |
0 | 248 } |
249 | |
250 | |
251 // ------------------------------------------------------------------ | |
252 // ciMethod::line_number_from_bci | |
253 int ciMethod::line_number_from_bci(int bci) const { | |
254 check_is_loaded(); | |
255 VM_ENTRY_MARK; | |
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256 return get_Method()->line_number_from_bci(bci); |
0 | 257 } |
258 | |
259 | |
260 // ------------------------------------------------------------------ | |
261 // ciMethod::vtable_index | |
262 // | |
263 // Get the position of this method's entry in the vtable, if any. | |
264 int ciMethod::vtable_index() { | |
265 check_is_loaded(); | |
266 assert(holder()->is_linked(), "must be linked"); | |
267 VM_ENTRY_MARK; | |
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268 return get_Method()->vtable_index(); |
0 | 269 } |
270 | |
271 | |
1692 | 272 #ifdef SHARK |
273 // ------------------------------------------------------------------ | |
274 // ciMethod::itable_index | |
275 // | |
276 // Get the position of this method's entry in the itable, if any. | |
277 int ciMethod::itable_index() { | |
278 check_is_loaded(); | |
279 assert(holder()->is_linked(), "must be linked"); | |
280 VM_ENTRY_MARK; | |
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281 return klassItable::compute_itable_index(get_Method()); |
1692 | 282 } |
283 #endif // SHARK | |
284 | |
285 | |
0 | 286 // ------------------------------------------------------------------ |
287 // ciMethod::native_entry | |
288 // | |
289 // Get the address of this method's native code, if any. | |
290 address ciMethod::native_entry() { | |
291 check_is_loaded(); | |
292 assert(flags().is_native(), "must be native method"); | |
293 VM_ENTRY_MARK; | |
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294 Method* method = get_Method(); |
0 | 295 address entry = method->native_function(); |
296 assert(entry != NULL, "must be valid entry point"); | |
297 return entry; | |
298 } | |
299 | |
300 | |
301 // ------------------------------------------------------------------ | |
302 // ciMethod::interpreter_entry | |
303 // | |
304 // Get the entry point for running this method in the interpreter. | |
305 address ciMethod::interpreter_entry() { | |
306 check_is_loaded(); | |
307 VM_ENTRY_MARK; | |
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308 methodHandle mh(THREAD, get_Method()); |
0 | 309 return Interpreter::entry_for_method(mh); |
310 } | |
311 | |
312 | |
313 // ------------------------------------------------------------------ | |
314 // ciMethod::uses_balanced_monitors | |
315 // | |
316 // Does this method use monitors in a strict stack-disciplined manner? | |
317 bool ciMethod::has_balanced_monitors() { | |
318 check_is_loaded(); | |
319 if (_balanced_monitors) return true; | |
320 | |
321 // Analyze the method to see if monitors are used properly. | |
322 VM_ENTRY_MARK; | |
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323 methodHandle method(THREAD, get_Method()); |
0 | 324 assert(method->has_monitor_bytecodes(), "should have checked this"); |
325 | |
326 // Check to see if a previous compilation computed the | |
327 // monitor-matching analysis. | |
328 if (method->guaranteed_monitor_matching()) { | |
329 _balanced_monitors = true; | |
330 return true; | |
331 } | |
332 | |
333 { | |
334 EXCEPTION_MARK; | |
335 ResourceMark rm(THREAD); | |
336 GeneratePairingInfo gpi(method); | |
337 gpi.compute_map(CATCH); | |
338 if (!gpi.monitor_safe()) { | |
339 return false; | |
340 } | |
341 method->set_guaranteed_monitor_matching(); | |
342 _balanced_monitors = true; | |
343 } | |
344 return true; | |
345 } | |
346 | |
347 | |
348 // ------------------------------------------------------------------ | |
349 // ciMethod::get_flow_analysis | |
350 ciTypeFlow* ciMethod::get_flow_analysis() { | |
1692 | 351 #if defined(COMPILER2) || defined(SHARK) |
0 | 352 if (_flow == NULL) { |
353 ciEnv* env = CURRENT_ENV; | |
354 _flow = new (env->arena()) ciTypeFlow(env, this); | |
355 _flow->do_flow(); | |
356 } | |
357 return _flow; | |
1692 | 358 #else // COMPILER2 || SHARK |
0 | 359 ShouldNotReachHere(); |
360 return NULL; | |
1692 | 361 #endif // COMPILER2 || SHARK |
0 | 362 } |
363 | |
364 | |
365 // ------------------------------------------------------------------ | |
366 // ciMethod::get_osr_flow_analysis | |
367 ciTypeFlow* ciMethod::get_osr_flow_analysis(int osr_bci) { | |
1692 | 368 #if defined(COMPILER2) || defined(SHARK) |
0 | 369 // OSR entry points are always place after a call bytecode of some sort |
370 assert(osr_bci >= 0, "must supply valid OSR entry point"); | |
371 ciEnv* env = CURRENT_ENV; | |
372 ciTypeFlow* flow = new (env->arena()) ciTypeFlow(env, this, osr_bci); | |
373 flow->do_flow(); | |
374 return flow; | |
1692 | 375 #else // COMPILER2 || SHARK |
0 | 376 ShouldNotReachHere(); |
377 return NULL; | |
1692 | 378 #endif // COMPILER2 || SHARK |
0 | 379 } |
380 | |
381 // ------------------------------------------------------------------ | |
991 | 382 // ciMethod::raw_liveness_at_bci |
0 | 383 // |
384 // Which local variables are live at a specific bci? | |
991 | 385 MethodLivenessResult ciMethod::raw_liveness_at_bci(int bci) { |
0 | 386 check_is_loaded(); |
387 if (_liveness == NULL) { | |
388 // Create the liveness analyzer. | |
389 Arena* arena = CURRENT_ENV->arena(); | |
390 _liveness = new (arena) MethodLiveness(arena, this); | |
391 _liveness->compute_liveness(); | |
392 } | |
991 | 393 return _liveness->get_liveness_at(bci); |
394 } | |
395 | |
396 // ------------------------------------------------------------------ | |
397 // ciMethod::liveness_at_bci | |
398 // | |
399 // Which local variables are live at a specific bci? When debugging | |
400 // will return true for all locals in some cases to improve debug | |
401 // information. | |
402 MethodLivenessResult ciMethod::liveness_at_bci(int bci) { | |
403 MethodLivenessResult result = raw_liveness_at_bci(bci); | |
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404 if (CURRENT_ENV->jvmti_can_access_local_variables() || DeoptimizeALot || CompileTheWorld) { |
0 | 405 // Keep all locals live for the user's edification and amusement. |
406 result.at_put_range(0, result.size(), true); | |
407 } | |
408 return result; | |
409 } | |
410 | |
411 // ciMethod::live_local_oops_at_bci | |
412 // | |
413 // find all the live oops in the locals array for a particular bci | |
414 // Compute what the interpreter believes by using the interpreter | |
415 // oopmap generator. This is used as a double check during osr to | |
416 // guard against conservative result from MethodLiveness making us | |
417 // think a dead oop is live. MethodLiveness is conservative in the | |
418 // sense that it may consider locals to be live which cannot be live, | |
419 // like in the case where a local could contain an oop or a primitive | |
420 // along different paths. In that case the local must be dead when | |
421 // those paths merge. Since the interpreter's viewpoint is used when | |
422 // gc'ing an interpreter frame we need to use its viewpoint during | |
423 // OSR when loading the locals. | |
424 | |
425 BitMap ciMethod::live_local_oops_at_bci(int bci) { | |
426 VM_ENTRY_MARK; | |
427 InterpreterOopMap mask; | |
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428 OopMapCache::compute_one_oop_map(get_Method(), bci, &mask); |
0 | 429 int mask_size = max_locals(); |
430 BitMap result(mask_size); | |
431 result.clear(); | |
432 int i; | |
433 for (i = 0; i < mask_size ; i++ ) { | |
434 if (mask.is_oop(i)) result.set_bit(i); | |
435 } | |
436 return result; | |
437 } | |
438 | |
439 | |
440 #ifdef COMPILER1 | |
441 // ------------------------------------------------------------------ | |
442 // ciMethod::bci_block_start | |
443 // | |
444 // Marks all bcis where a new basic block starts | |
445 const BitMap ciMethod::bci_block_start() { | |
446 check_is_loaded(); | |
447 if (_liveness == NULL) { | |
448 // Create the liveness analyzer. | |
449 Arena* arena = CURRENT_ENV->arena(); | |
450 _liveness = new (arena) MethodLiveness(arena, this); | |
451 _liveness->compute_liveness(); | |
452 } | |
453 | |
454 return _liveness->get_bci_block_start(); | |
455 } | |
456 #endif // COMPILER1 | |
457 | |
458 | |
459 // ------------------------------------------------------------------ | |
460 // ciMethod::call_profile_at_bci | |
461 // | |
462 // Get the ciCallProfile for the invocation of this method. | |
463 // Also reports receiver types for non-call type checks (if TypeProfileCasts). | |
464 ciCallProfile ciMethod::call_profile_at_bci(int bci) { | |
465 ResourceMark rm; | |
466 ciCallProfile result; | |
467 if (method_data() != NULL && method_data()->is_mature()) { | |
468 ciProfileData* data = method_data()->bci_to_data(bci); | |
469 if (data != NULL && data->is_CounterData()) { | |
470 // Every profiled call site has a counter. | |
471 int count = data->as_CounterData()->count(); | |
472 | |
473 if (!data->is_ReceiverTypeData()) { | |
474 result._receiver_count[0] = 0; // that's a definite zero | |
475 } else { // ReceiverTypeData is a subclass of CounterData | |
476 ciReceiverTypeData* call = (ciReceiverTypeData*)data->as_ReceiverTypeData(); | |
477 // In addition, virtual call sites have receiver type information | |
478 int receivers_count_total = 0; | |
479 int morphism = 0; | |
1783 | 480 // Precompute morphism for the possible fixup |
0 | 481 for (uint i = 0; i < call->row_limit(); i++) { |
482 ciKlass* receiver = call->receiver(i); | |
483 if (receiver == NULL) continue; | |
1783 | 484 morphism++; |
485 } | |
486 int epsilon = 0; | |
487 if (TieredCompilation && ProfileInterpreter) { | |
488 // Interpreter and C1 treat final and special invokes differently. | |
489 // C1 will record a type, whereas the interpreter will just | |
490 // increment the count. Detect this case. | |
491 if (morphism == 1 && count > 0) { | |
492 epsilon = count; | |
493 count = 0; | |
494 } | |
495 } | |
496 for (uint i = 0; i < call->row_limit(); i++) { | |
497 ciKlass* receiver = call->receiver(i); | |
498 if (receiver == NULL) continue; | |
499 int rcount = call->receiver_count(i) + epsilon; | |
0 | 500 if (rcount == 0) rcount = 1; // Should be valid value |
501 receivers_count_total += rcount; | |
502 // Add the receiver to result data. | |
503 result.add_receiver(receiver, rcount); | |
504 // If we extend profiling to record methods, | |
505 // we will set result._method also. | |
506 } | |
507 // Determine call site's morphism. | |
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508 // The call site count is 0 with known morphism (onlt 1 or 2 receivers) |
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509 // or < 0 in the case of a type check failured for checkcast, aastore, instanceof. |
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510 // The call site count is > 0 in the case of a polymorphic virtual call. |
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511 if (morphism > 0 && morphism == result._limit) { |
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512 // The morphism <= MorphismLimit. |
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513 if ((morphism < ciCallProfile::MorphismLimit) || |
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514 (morphism == ciCallProfile::MorphismLimit && count == 0)) { |
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515 #ifdef ASSERT |
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516 if (count > 0) { |
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517 this->print_short_name(tty); |
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518 tty->print_cr(" @ bci:%d", bci); |
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519 this->print_codes(); |
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520 assert(false, "this call site should not be polymorphic"); |
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521 } |
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522 #endif |
0 | 523 result._morphism = morphism; |
524 } | |
525 } | |
526 // Make the count consistent if this is a call profile. If count is | |
527 // zero or less, presume that this is a typecheck profile and | |
528 // do nothing. Otherwise, increase count to be the sum of all | |
529 // receiver's counts. | |
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530 if (count >= 0) { |
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531 count += receivers_count_total; |
0 | 532 } |
533 } | |
534 result._count = count; | |
535 } | |
536 } | |
537 return result; | |
538 } | |
539 | |
540 // ------------------------------------------------------------------ | |
541 // Add new receiver and sort data by receiver's profile count. | |
542 void ciCallProfile::add_receiver(ciKlass* receiver, int receiver_count) { | |
543 // Add new receiver and sort data by receiver's counts when we have space | |
544 // for it otherwise replace the less called receiver (less called receiver | |
545 // is placed to the last array element which is not used). | |
546 // First array's element contains most called receiver. | |
547 int i = _limit; | |
548 for (; i > 0 && receiver_count > _receiver_count[i-1]; i--) { | |
549 _receiver[i] = _receiver[i-1]; | |
550 _receiver_count[i] = _receiver_count[i-1]; | |
551 } | |
552 _receiver[i] = receiver; | |
553 _receiver_count[i] = receiver_count; | |
554 if (_limit < MorphismLimit) _limit++; | |
555 } | |
556 | |
557 // ------------------------------------------------------------------ | |
558 // ciMethod::find_monomorphic_target | |
559 // | |
560 // Given a certain calling environment, find the monomorphic target | |
561 // for the call. Return NULL if the call is not monomorphic in | |
562 // its calling environment, or if there are only abstract methods. | |
563 // The returned method is never abstract. | |
564 // Note: If caller uses a non-null result, it must inform dependencies | |
565 // via assert_unique_concrete_method or assert_leaf_type. | |
566 ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller, | |
567 ciInstanceKlass* callee_holder, | |
568 ciInstanceKlass* actual_recv) { | |
569 check_is_loaded(); | |
570 | |
571 if (actual_recv->is_interface()) { | |
572 // %%% We cannot trust interface types, yet. See bug 6312651. | |
573 return NULL; | |
574 } | |
575 | |
576 ciMethod* root_m = resolve_invoke(caller, actual_recv); | |
577 if (root_m == NULL) { | |
578 // Something went wrong looking up the actual receiver method. | |
579 return NULL; | |
580 } | |
581 assert(!root_m->is_abstract(), "resolve_invoke promise"); | |
582 | |
583 // Make certain quick checks even if UseCHA is false. | |
584 | |
585 // Is it private or final? | |
586 if (root_m->can_be_statically_bound()) { | |
587 return root_m; | |
588 } | |
589 | |
590 if (actual_recv->is_leaf_type() && actual_recv == root_m->holder()) { | |
591 // Easy case. There is no other place to put a method, so don't bother | |
592 // to go through the VM_ENTRY_MARK and all the rest. | |
593 return root_m; | |
594 } | |
595 | |
596 // Array methods (clone, hashCode, etc.) are always statically bound. | |
597 // If we were to see an array type here, we'd return root_m. | |
598 // However, this method processes only ciInstanceKlasses. (See 4962591.) | |
599 // The inline_native_clone intrinsic narrows Object to T[] properly, | |
600 // so there is no need to do the same job here. | |
601 | |
602 if (!UseCHA) return NULL; | |
603 | |
604 VM_ENTRY_MARK; | |
605 | |
606 methodHandle target; | |
607 { | |
608 MutexLocker locker(Compile_lock); | |
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609 Klass* context = actual_recv->get_Klass(); |
0 | 610 target = Dependencies::find_unique_concrete_method(context, |
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611 root_m->get_Method()); |
0 | 612 // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods. |
613 } | |
614 | |
615 #ifndef PRODUCT | |
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616 if (TraceDependencies && target() != NULL && target() != root_m->get_Method()) { |
0 | 617 tty->print("found a non-root unique target method"); |
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618 tty->print_cr(" context = %s", InstanceKlass::cast(actual_recv->get_Klass())->external_name()); |
0 | 619 tty->print(" method = "); |
620 target->print_short_name(tty); | |
621 tty->cr(); | |
622 } | |
623 #endif //PRODUCT | |
624 | |
625 if (target() == NULL) { | |
626 return NULL; | |
627 } | |
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628 if (target() == root_m->get_Method()) { |
0 | 629 return root_m; |
630 } | |
631 if (!root_m->is_public() && | |
632 !root_m->is_protected()) { | |
633 // If we are going to reason about inheritance, it's easiest | |
634 // if the method in question is public, protected, or private. | |
635 // If the answer is not root_m, it is conservatively correct | |
636 // to return NULL, even if the CHA encountered irrelevant | |
637 // methods in other packages. | |
638 // %%% TO DO: Work out logic for package-private methods | |
639 // with the same name but different vtable indexes. | |
640 return NULL; | |
641 } | |
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642 return CURRENT_THREAD_ENV->get_method(target()); |
0 | 643 } |
644 | |
645 // ------------------------------------------------------------------ | |
646 // ciMethod::resolve_invoke | |
647 // | |
648 // Given a known receiver klass, find the target for the call. | |
649 // Return NULL if the call has no target or the target is abstract. | |
650 ciMethod* ciMethod::resolve_invoke(ciKlass* caller, ciKlass* exact_receiver) { | |
651 check_is_loaded(); | |
652 VM_ENTRY_MARK; | |
653 | |
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654 KlassHandle caller_klass (THREAD, caller->get_Klass()); |
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655 KlassHandle h_recv (THREAD, exact_receiver->get_Klass()); |
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656 KlassHandle h_resolved (THREAD, holder()->get_Klass()); |
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657 Symbol* h_name = name()->get_symbol(); |
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658 Symbol* h_signature = signature()->get_symbol(); |
0 | 659 |
660 methodHandle m; | |
661 // Only do exact lookup if receiver klass has been linked. Otherwise, | |
662 // the vtable has not been setup, and the LinkResolver will fail. | |
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663 if (h_recv->oop_is_array() |
0 | 664 || |
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665 InstanceKlass::cast(h_recv())->is_linked() && !exact_receiver->is_interface()) { |
0 | 666 if (holder()->is_interface()) { |
667 m = LinkResolver::resolve_interface_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
668 } else { | |
669 m = LinkResolver::resolve_virtual_call_or_null(h_recv, h_resolved, h_name, h_signature, caller_klass); | |
670 } | |
671 } | |
672 | |
673 if (m.is_null()) { | |
674 // Return NULL only if there was a problem with lookup (uninitialized class, etc.) | |
675 return NULL; | |
676 } | |
677 | |
678 ciMethod* result = this; | |
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679 if (m() != get_Method()) { |
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680 result = CURRENT_THREAD_ENV->get_method(m()); |
0 | 681 } |
682 | |
683 // Don't return abstract methods because they aren't | |
684 // optimizable or interesting. | |
685 if (result->is_abstract()) { | |
686 return NULL; | |
687 } else { | |
688 return result; | |
689 } | |
690 } | |
691 | |
692 // ------------------------------------------------------------------ | |
693 // ciMethod::resolve_vtable_index | |
694 // | |
695 // Given a known receiver klass, find the vtable index for the call. | |
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696 // Return Method::invalid_vtable_index if the vtable_index is unknown. |
0 | 697 int ciMethod::resolve_vtable_index(ciKlass* caller, ciKlass* receiver) { |
698 check_is_loaded(); | |
699 | |
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700 int vtable_index = Method::invalid_vtable_index; |
0 | 701 // Only do lookup if receiver klass has been linked. Otherwise, |
702 // the vtable has not been setup, and the LinkResolver will fail. | |
703 if (!receiver->is_interface() | |
704 && (!receiver->is_instance_klass() || | |
705 receiver->as_instance_klass()->is_linked())) { | |
706 VM_ENTRY_MARK; | |
707 | |
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708 KlassHandle caller_klass (THREAD, caller->get_Klass()); |
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709 KlassHandle h_recv (THREAD, receiver->get_Klass()); |
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710 Symbol* h_name = name()->get_symbol(); |
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711 Symbol* h_signature = signature()->get_symbol(); |
0 | 712 |
713 vtable_index = LinkResolver::resolve_virtual_vtable_index(h_recv, h_recv, h_name, h_signature, caller_klass); | |
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714 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 715 // A statically bound method. Return "no such index". |
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716 vtable_index = Method::invalid_vtable_index; |
0 | 717 } |
718 } | |
719 | |
720 return vtable_index; | |
721 } | |
722 | |
723 // ------------------------------------------------------------------ | |
724 // ciMethod::interpreter_call_site_count | |
725 int ciMethod::interpreter_call_site_count(int bci) { | |
726 if (method_data() != NULL) { | |
727 ResourceMark rm; | |
728 ciProfileData* data = method_data()->bci_to_data(bci); | |
729 if (data != NULL && data->is_CounterData()) { | |
730 return scale_count(data->as_CounterData()->count()); | |
731 } | |
732 } | |
733 return -1; // unknown | |
734 } | |
735 | |
736 // ------------------------------------------------------------------ | |
737 // Adjust a CounterData count to be commensurate with | |
738 // interpreter_invocation_count. If the MDO exists for | |
739 // only 25% of the time the method exists, then the | |
740 // counts in the MDO should be scaled by 4X, so that | |
741 // they can be usefully and stably compared against the | |
742 // invocation counts in methods. | |
743 int ciMethod::scale_count(int count, float prof_factor) { | |
744 if (count > 0 && method_data() != NULL) { | |
1783 | 745 int counter_life; |
0 | 746 int method_life = interpreter_invocation_count(); |
1783 | 747 if (TieredCompilation) { |
748 // In tiered the MDO's life is measured directly, so just use the snapshotted counters | |
749 counter_life = MAX2(method_data()->invocation_count(), method_data()->backedge_count()); | |
750 } else { | |
751 int current_mileage = method_data()->current_mileage(); | |
752 int creation_mileage = method_data()->creation_mileage(); | |
753 counter_life = current_mileage - creation_mileage; | |
754 } | |
755 | |
0 | 756 // counter_life due to backedge_counter could be > method_life |
757 if (counter_life > method_life) | |
758 counter_life = method_life; | |
759 if (0 < counter_life && counter_life <= method_life) { | |
760 count = (int)((double)count * prof_factor * method_life / counter_life + 0.5); | |
761 count = (count > 0) ? count : 1; | |
762 } | |
763 } | |
764 return count; | |
765 } | |
766 | |
767 // ------------------------------------------------------------------ | |
710 | 768 // invokedynamic support |
1564 | 769 |
770 // ------------------------------------------------------------------ | |
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771 // ciMethod::is_method_handle_intrinsic |
710 | 772 // |
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773 // Return true if the method is an instance of the JVM-generated |
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774 // signature-polymorphic MethodHandle methods, _invokeBasic, _linkToVirtual, etc. |
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775 bool ciMethod::is_method_handle_intrinsic() const { |
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776 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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777 return (MethodHandles::is_signature_polymorphic(iid) && |
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778 MethodHandles::is_signature_polymorphic_intrinsic(iid)); |
710 | 779 } |
780 | |
1564 | 781 // ------------------------------------------------------------------ |
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782 // ciMethod::is_compiled_lambda_form |
1564 | 783 // |
784 // Return true if the method is a generated MethodHandle adapter. | |
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785 // These are built by Java code. |
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786 bool ciMethod::is_compiled_lambda_form() const { |
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787 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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788 return iid == vmIntrinsics::_compiledLambdaForm; |
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789 } |
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790 |
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791 // ------------------------------------------------------------------ |
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792 // ciMethod::has_member_arg |
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793 // |
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794 // Return true if the method is a linker intrinsic like _linkToVirtual. |
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795 // These are built by the JVM. |
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796 bool ciMethod::has_member_arg() const { |
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797 vmIntrinsics::ID iid = _intrinsic_id; // do not check if loaded |
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798 return (MethodHandles::is_signature_polymorphic(iid) && |
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799 MethodHandles::has_member_arg(iid)); |
710 | 800 } |
801 | |
802 // ------------------------------------------------------------------ | |
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803 // ciMethod::ensure_method_data |
0 | 804 // |
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805 // Generate new MethodData* objects at compile time. |
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806 // Return true if allocation was successful or no MDO is required. |
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807 bool ciMethod::ensure_method_data(methodHandle h_m) { |
0 | 808 EXCEPTION_CONTEXT; |
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809 if (is_native() || is_abstract() || h_m()->is_accessor()) return true; |
0 | 810 if (h_m()->method_data() == NULL) { |
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811 Method::build_interpreter_method_data(h_m, THREAD); |
0 | 812 if (HAS_PENDING_EXCEPTION) { |
813 CLEAR_PENDING_EXCEPTION; | |
814 } | |
815 } | |
816 if (h_m()->method_data() != NULL) { | |
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817 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data()); |
0 | 818 _method_data->load_data(); |
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819 return true; |
0 | 820 } else { |
821 _method_data = CURRENT_ENV->get_empty_methodData(); | |
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822 return false; |
0 | 823 } |
824 } | |
825 | |
826 // public, retroactive version | |
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827 bool ciMethod::ensure_method_data() { |
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828 bool result = true; |
0 | 829 if (_method_data == NULL || _method_data->is_empty()) { |
830 GUARDED_VM_ENTRY({ | |
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831 result = ensure_method_data(get_Method()); |
0 | 832 }); |
833 } | |
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834 return result; |
0 | 835 } |
836 | |
837 | |
838 // ------------------------------------------------------------------ | |
839 // ciMethod::method_data | |
840 // | |
841 ciMethodData* ciMethod::method_data() { | |
842 if (_method_data != NULL) { | |
843 return _method_data; | |
844 } | |
845 VM_ENTRY_MARK; | |
846 ciEnv* env = CURRENT_ENV; | |
847 Thread* my_thread = JavaThread::current(); | |
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848 methodHandle h_m(my_thread, get_Method()); |
0 | 849 |
850 if (h_m()->method_data() != NULL) { | |
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851 _method_data = CURRENT_ENV->get_method_data(h_m()->method_data()); |
0 | 852 _method_data->load_data(); |
853 } else { | |
854 _method_data = CURRENT_ENV->get_empty_methodData(); | |
855 } | |
856 return _method_data; | |
857 | |
858 } | |
859 | |
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860 // ------------------------------------------------------------------ |
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861 // ciMethod::method_data_or_null |
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862 // Returns a pointer to ciMethodData if MDO exists on the VM side, |
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863 // NULL otherwise. |
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864 ciMethodData* ciMethod::method_data_or_null() { |
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865 ciMethodData *md = method_data(); |
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866 if (md->is_empty()) return NULL; |
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867 return md; |
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868 } |
0 | 869 |
870 // ------------------------------------------------------------------ | |
871 // ciMethod::will_link | |
872 // | |
873 // Will this method link in a specific calling context? | |
874 bool ciMethod::will_link(ciKlass* accessing_klass, | |
875 ciKlass* declared_method_holder, | |
876 Bytecodes::Code bc) { | |
877 if (!is_loaded()) { | |
878 // Method lookup failed. | |
879 return false; | |
880 } | |
881 | |
882 // The link checks have been front-loaded into the get_method | |
883 // call. This method (ciMethod::will_link()) will be removed | |
884 // in the future. | |
885 | |
886 return true; | |
887 } | |
888 | |
889 // ------------------------------------------------------------------ | |
890 // ciMethod::should_exclude | |
891 // | |
892 // Should this method be excluded from compilation? | |
893 bool ciMethod::should_exclude() { | |
894 check_is_loaded(); | |
895 VM_ENTRY_MARK; | |
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896 methodHandle mh(THREAD, get_Method()); |
0 | 897 bool ignore; |
898 return CompilerOracle::should_exclude(mh, ignore); | |
899 } | |
900 | |
901 // ------------------------------------------------------------------ | |
902 // ciMethod::should_inline | |
903 // | |
904 // Should this method be inlined during compilation? | |
905 bool ciMethod::should_inline() { | |
906 check_is_loaded(); | |
907 VM_ENTRY_MARK; | |
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908 methodHandle mh(THREAD, get_Method()); |
0 | 909 return CompilerOracle::should_inline(mh); |
910 } | |
911 | |
912 // ------------------------------------------------------------------ | |
913 // ciMethod::should_not_inline | |
914 // | |
915 // Should this method be disallowed from inlining during compilation? | |
916 bool ciMethod::should_not_inline() { | |
917 check_is_loaded(); | |
918 VM_ENTRY_MARK; | |
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919 methodHandle mh(THREAD, get_Method()); |
0 | 920 return CompilerOracle::should_not_inline(mh); |
921 } | |
922 | |
923 // ------------------------------------------------------------------ | |
924 // ciMethod::should_print_assembly | |
925 // | |
926 // Should the compiler print the generated code for this method? | |
927 bool ciMethod::should_print_assembly() { | |
928 check_is_loaded(); | |
929 VM_ENTRY_MARK; | |
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930 methodHandle mh(THREAD, get_Method()); |
0 | 931 return CompilerOracle::should_print(mh); |
932 } | |
933 | |
934 // ------------------------------------------------------------------ | |
935 // ciMethod::break_at_execute | |
936 // | |
937 // Should the compiler insert a breakpoint into the generated code | |
938 // method? | |
939 bool ciMethod::break_at_execute() { | |
940 check_is_loaded(); | |
941 VM_ENTRY_MARK; | |
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942 methodHandle mh(THREAD, get_Method()); |
0 | 943 return CompilerOracle::should_break_at(mh); |
944 } | |
945 | |
946 // ------------------------------------------------------------------ | |
947 // ciMethod::has_option | |
948 // | |
949 bool ciMethod::has_option(const char* option) { | |
950 check_is_loaded(); | |
951 VM_ENTRY_MARK; | |
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952 methodHandle mh(THREAD, get_Method()); |
0 | 953 return CompilerOracle::has_option_string(mh, option); |
954 } | |
955 | |
956 // ------------------------------------------------------------------ | |
957 // ciMethod::can_be_compiled | |
958 // | |
959 // Have previous compilations of this method succeeded? | |
960 bool ciMethod::can_be_compiled() { | |
961 check_is_loaded(); | |
1783 | 962 ciEnv* env = CURRENT_ENV; |
963 if (is_c1_compile(env->comp_level())) { | |
964 return _is_c1_compilable; | |
965 } | |
966 return _is_c2_compilable; | |
0 | 967 } |
968 | |
969 // ------------------------------------------------------------------ | |
970 // ciMethod::set_not_compilable | |
971 // | |
972 // Tell the VM that this method cannot be compiled at all. | |
973 void ciMethod::set_not_compilable() { | |
974 check_is_loaded(); | |
975 VM_ENTRY_MARK; | |
1783 | 976 ciEnv* env = CURRENT_ENV; |
977 if (is_c1_compile(env->comp_level())) { | |
978 _is_c1_compilable = false; | |
979 } else { | |
980 _is_c2_compilable = false; | |
981 } | |
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982 get_Method()->set_not_compilable(env->comp_level()); |
0 | 983 } |
984 | |
985 // ------------------------------------------------------------------ | |
986 // ciMethod::can_be_osr_compiled | |
987 // | |
988 // Have previous compilations of this method succeeded? | |
989 // | |
990 // Implementation note: the VM does not currently keep track | |
991 // of failed OSR compilations per bci. The entry_bci parameter | |
992 // is currently unused. | |
993 bool ciMethod::can_be_osr_compiled(int entry_bci) { | |
994 check_is_loaded(); | |
995 VM_ENTRY_MARK; | |
1783 | 996 ciEnv* env = CURRENT_ENV; |
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997 return !get_Method()->is_not_osr_compilable(env->comp_level()); |
0 | 998 } |
999 | |
1000 // ------------------------------------------------------------------ | |
1001 // ciMethod::has_compiled_code | |
1002 bool ciMethod::has_compiled_code() { | |
1003 VM_ENTRY_MARK; | |
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1004 return get_Method()->code() != NULL; |
0 | 1005 } |
1006 | |
1783 | 1007 int ciMethod::comp_level() { |
1008 check_is_loaded(); | |
1009 VM_ENTRY_MARK; | |
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1010 nmethod* nm = get_Method()->code(); |
1783 | 1011 if (nm != NULL) return nm->comp_level(); |
1012 return 0; | |
1013 } | |
1014 | |
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1015 int ciMethod::highest_osr_comp_level() { |
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1016 check_is_loaded(); |
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1017 VM_ENTRY_MARK; |
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1018 return get_Method()->highest_osr_comp_level(); |
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1019 } |
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1020 |
0 | 1021 // ------------------------------------------------------------------ |
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1022 // ciMethod::code_size_for_inlining |
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1023 // |
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1024 // Code size for inlining decisions. This method returns a code |
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1025 // size of 1 for methods which has the ForceInline annotation. |
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1026 int ciMethod::code_size_for_inlining() { |
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1027 check_is_loaded(); |
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1028 if (get_Method()->force_inline()) { |
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1029 return 1; |
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1030 } |
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1031 return code_size(); |
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1032 } |
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1033 |
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1034 // ------------------------------------------------------------------ |
0 | 1035 // ciMethod::instructions_size |
1748 | 1036 // |
1037 // This is a rough metric for "fat" methods, compared before inlining | |
1038 // with InlineSmallCode. The CodeBlob::code_size accessor includes | |
1039 // junk like exception handler, stubs, and constant table, which are | |
1040 // not highly relevant to an inlined method. So we use the more | |
1041 // specific accessor nmethod::insts_size. | |
1783 | 1042 int ciMethod::instructions_size(int comp_level) { |
0 | 1043 GUARDED_VM_ENTRY( |
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1044 nmethod* code = get_Method()->code(); |
1783 | 1045 if (code != NULL && (comp_level == CompLevel_any || comp_level == code->comp_level())) { |
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1046 return code->insts_end() - code->verified_entry_point(); |
0 | 1047 } |
1783 | 1048 return 0; |
0 | 1049 ) |
1050 } | |
1051 | |
1052 // ------------------------------------------------------------------ | |
1053 // ciMethod::log_nmethod_identity | |
1054 void ciMethod::log_nmethod_identity(xmlStream* log) { | |
1055 GUARDED_VM_ENTRY( | |
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1056 nmethod* code = get_Method()->code(); |
0 | 1057 if (code != NULL) { |
1058 code->log_identity(log); | |
1059 } | |
1060 ) | |
1061 } | |
1062 | |
1063 // ------------------------------------------------------------------ | |
1064 // ciMethod::is_not_reached | |
1065 bool ciMethod::is_not_reached(int bci) { | |
1066 check_is_loaded(); | |
1067 VM_ENTRY_MARK; | |
1068 return Interpreter::is_not_reached( | |
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1069 methodHandle(THREAD, get_Method()), bci); |
0 | 1070 } |
1071 | |
1072 // ------------------------------------------------------------------ | |
1073 // ciMethod::was_never_executed | |
1074 bool ciMethod::was_executed_more_than(int times) { | |
1075 VM_ENTRY_MARK; | |
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1076 return get_Method()->was_executed_more_than(times); |
0 | 1077 } |
1078 | |
1079 // ------------------------------------------------------------------ | |
1080 // ciMethod::has_unloaded_classes_in_signature | |
1081 bool ciMethod::has_unloaded_classes_in_signature() { | |
1082 VM_ENTRY_MARK; | |
1083 { | |
1084 EXCEPTION_MARK; | |
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1085 methodHandle m(THREAD, get_Method()); |
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1086 bool has_unloaded = Method::has_unloaded_classes_in_signature(m, (JavaThread *)THREAD); |
0 | 1087 if( HAS_PENDING_EXCEPTION ) { |
1088 CLEAR_PENDING_EXCEPTION; | |
1089 return true; // Declare that we may have unloaded classes | |
1090 } | |
1091 return has_unloaded; | |
1092 } | |
1093 } | |
1094 | |
1095 // ------------------------------------------------------------------ | |
1096 // ciMethod::is_klass_loaded | |
1097 bool ciMethod::is_klass_loaded(int refinfo_index, bool must_be_resolved) const { | |
1098 VM_ENTRY_MARK; | |
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1099 return get_Method()->is_klass_loaded(refinfo_index, must_be_resolved); |
0 | 1100 } |
1101 | |
1102 // ------------------------------------------------------------------ | |
1103 // ciMethod::check_call | |
1104 bool ciMethod::check_call(int refinfo_index, bool is_static) const { | |
1105 VM_ENTRY_MARK; | |
1106 { | |
1107 EXCEPTION_MARK; | |
1108 HandleMark hm(THREAD); | |
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1109 constantPoolHandle pool (THREAD, get_Method()->constants()); |
0 | 1110 methodHandle spec_method; |
1111 KlassHandle spec_klass; | |
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1112 Bytecodes::Code code = (is_static ? Bytecodes::_invokestatic : Bytecodes::_invokevirtual); |
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1113 LinkResolver::resolve_method_statically(spec_method, spec_klass, code, pool, refinfo_index, THREAD); |
0 | 1114 if (HAS_PENDING_EXCEPTION) { |
1115 CLEAR_PENDING_EXCEPTION; | |
1116 return false; | |
1117 } else { | |
1118 return (spec_method->is_static() == is_static); | |
1119 } | |
1120 } | |
1121 return false; | |
1122 } | |
1123 | |
1124 // ------------------------------------------------------------------ | |
1125 // ciMethod::print_codes | |
1126 // | |
1127 // Print the bytecodes for this method. | |
1128 void ciMethod::print_codes_on(outputStream* st) { | |
1129 check_is_loaded(); | |
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1130 GUARDED_VM_ENTRY(get_Method()->print_codes_on(st);) |
0 | 1131 } |
1132 | |
1133 | |
1134 #define FETCH_FLAG_FROM_VM(flag_accessor) { \ | |
1135 check_is_loaded(); \ | |
1136 VM_ENTRY_MARK; \ | |
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1137 return get_Method()->flag_accessor(); \ |
0 | 1138 } |
1139 | |
1140 bool ciMethod::is_empty_method() const { FETCH_FLAG_FROM_VM(is_empty_method); } | |
1141 bool ciMethod::is_vanilla_constructor() const { FETCH_FLAG_FROM_VM(is_vanilla_constructor); } | |
1142 bool ciMethod::has_loops () const { FETCH_FLAG_FROM_VM(has_loops); } | |
1143 bool ciMethod::has_jsrs () const { FETCH_FLAG_FROM_VM(has_jsrs); } | |
1144 bool ciMethod::is_accessor () const { FETCH_FLAG_FROM_VM(is_accessor); } | |
1145 bool ciMethod::is_initializer () const { FETCH_FLAG_FROM_VM(is_initializer); } | |
1146 | |
1147 BCEscapeAnalyzer *ciMethod::get_bcea() { | |
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1148 #ifdef COMPILER2 |
0 | 1149 if (_bcea == NULL) { |
1150 _bcea = new (CURRENT_ENV->arena()) BCEscapeAnalyzer(this, NULL); | |
1151 } | |
1152 return _bcea; | |
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1153 #else // COMPILER2 |
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1154 ShouldNotReachHere(); |
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1155 return NULL; |
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1156 #endif // COMPILER2 |
0 | 1157 } |
1158 | |
1159 ciMethodBlocks *ciMethod::get_method_blocks() { | |
1160 Arena *arena = CURRENT_ENV->arena(); | |
1161 if (_method_blocks == NULL) { | |
1162 _method_blocks = new (arena) ciMethodBlocks(arena, this); | |
1163 } | |
1164 return _method_blocks; | |
1165 } | |
1166 | |
1167 #undef FETCH_FLAG_FROM_VM | |
1168 | |
1169 | |
1170 // ------------------------------------------------------------------ | |
1171 // ciMethod::print_codes | |
1172 // | |
1173 // Print a range of the bytecodes for this method. | |
1174 void ciMethod::print_codes_on(int from, int to, outputStream* st) { | |
1175 check_is_loaded(); | |
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1176 GUARDED_VM_ENTRY(get_Method()->print_codes_on(from, to, st);) |
0 | 1177 } |
1178 | |
1179 // ------------------------------------------------------------------ | |
1180 // ciMethod::print_name | |
1181 // | |
1182 // Print the name of this method, including signature and some flags. | |
1183 void ciMethod::print_name(outputStream* st) { | |
1184 check_is_loaded(); | |
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1185 GUARDED_VM_ENTRY(get_Method()->print_name(st);) |
0 | 1186 } |
1187 | |
1188 // ------------------------------------------------------------------ | |
1189 // ciMethod::print_short_name | |
1190 // | |
1191 // Print the name of this method, without signature. | |
1192 void ciMethod::print_short_name(outputStream* st) { | |
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1193 if (is_loaded()) { |
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1194 GUARDED_VM_ENTRY(get_Method()->print_short_name(st);); |
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1195 } else { |
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1196 // Fall back if method is not loaded. |
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1197 holder()->print_name_on(st); |
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1198 st->print("::"); |
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1199 name()->print_symbol_on(st); |
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1200 if (WizardMode) |
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1201 signature()->as_symbol()->print_symbol_on(st); |
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1202 } |
0 | 1203 } |
1204 | |
1205 // ------------------------------------------------------------------ | |
1206 // ciMethod::print_impl | |
1207 // | |
1208 // Implementation of the print method. | |
1209 void ciMethod::print_impl(outputStream* st) { | |
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1210 ciMetadata::print_impl(st); |
0 | 1211 st->print(" name="); |
1212 name()->print_symbol_on(st); | |
1213 st->print(" holder="); | |
1214 holder()->print_name_on(st); | |
1215 st->print(" signature="); | |
1216 signature()->as_symbol()->print_symbol_on(st); | |
1217 if (is_loaded()) { | |
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1218 st->print(" loaded=true"); |
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1219 st->print(" arg_size=%d", arg_size()); |
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1220 st->print(" flags="); |
0 | 1221 flags().print_member_flags(st); |
1222 } else { | |
1223 st->print(" loaded=false"); | |
1224 } | |
1225 } |