Mercurial > hg > truffle
comparison graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotResolvedJavaMethodImpl.java @ 21551:5324104ac4f3
moved com.oracle.graal.hotspot.jvmci classes to com.oracle.jvmci.hotspot module (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 26 May 2015 17:13:37 +0200 |
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1 /* | |
2 * Copyright (c) 2011, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 */ | |
23 package com.oracle.jvmci.hotspot; | |
24 | |
25 import static com.oracle.jvmci.common.UnsafeAccess.*; | |
26 import static com.oracle.jvmci.hotspot.HotSpotJVMCIRuntime.*; | |
27 import static com.oracle.jvmci.hotspot.HotSpotResolvedJavaMethodImpl.Options.*; | |
28 | |
29 import java.lang.annotation.*; | |
30 import java.lang.reflect.*; | |
31 import java.util.*; | |
32 | |
33 import com.oracle.graal.api.code.*; | |
34 import com.oracle.graal.api.meta.*; | |
35 import com.oracle.graal.debug.*; | |
36 import com.oracle.graal.options.*; | |
37 import com.oracle.jvmci.common.*; | |
38 | |
39 /** | |
40 * Implementation of {@link JavaMethod} for resolved HotSpot methods. | |
41 */ | |
42 public final class HotSpotResolvedJavaMethodImpl extends HotSpotMethod implements HotSpotResolvedJavaMethod, HotSpotProxified, MethodIdHolder { | |
43 | |
44 static class Options { | |
45 // @formatter:off | |
46 @Option(help = "", type = OptionType.Debug) | |
47 public static final OptionValue<Boolean> UseProfilingInformation = new OptionValue<>(true); | |
48 // @formatter:on | |
49 } | |
50 | |
51 /** | |
52 * Reference to metaspace Method object. | |
53 */ | |
54 private final long metaspaceMethod; | |
55 | |
56 private final HotSpotResolvedObjectTypeImpl holder; | |
57 private final HotSpotConstantPool constantPool; | |
58 private final HotSpotSignature signature; | |
59 private HotSpotMethodData methodData; | |
60 private byte[] code; | |
61 private Member toJavaCache; | |
62 | |
63 /** | |
64 * Gets the holder of a HotSpot metaspace method native object. | |
65 * | |
66 * @param metaspaceMethod a metaspace Method object | |
67 * @return the {@link ResolvedJavaType} corresponding to the holder of the | |
68 * {@code metaspaceMethod} | |
69 */ | |
70 public static HotSpotResolvedObjectTypeImpl getHolder(long metaspaceMethod) { | |
71 HotSpotVMConfig config = runtime().getConfig(); | |
72 final long metaspaceConstMethod = unsafe.getAddress(metaspaceMethod + config.methodConstMethodOffset); | |
73 final long metaspaceConstantPool = unsafe.getAddress(metaspaceConstMethod + config.constMethodConstantsOffset); | |
74 final long metaspaceKlass = unsafe.getAddress(metaspaceConstantPool + config.constantPoolHolderOffset); | |
75 return HotSpotResolvedObjectTypeImpl.fromMetaspaceKlass(metaspaceKlass); | |
76 } | |
77 | |
78 /** | |
79 * Gets the {@link ResolvedJavaMethod} for a HotSpot metaspace method native object. | |
80 * | |
81 * @param metaspaceMethod a metaspace Method object | |
82 * @return the {@link ResolvedJavaMethod} corresponding to {@code metaspaceMethod} | |
83 */ | |
84 public static HotSpotResolvedJavaMethod fromMetaspace(long metaspaceMethod) { | |
85 HotSpotResolvedObjectTypeImpl holder = getHolder(metaspaceMethod); | |
86 return holder.createMethod(metaspaceMethod); | |
87 } | |
88 | |
89 public HotSpotResolvedJavaMethodImpl(HotSpotResolvedObjectTypeImpl holder, long metaspaceMethod) { | |
90 // It would be too much work to get the method name here so we fill it in later. | |
91 super(null); | |
92 this.metaspaceMethod = metaspaceMethod; | |
93 this.holder = holder; | |
94 | |
95 HotSpotVMConfig config = runtime().getConfig(); | |
96 final long constMethod = getConstMethod(); | |
97 | |
98 /* | |
99 * Get the constant pool from the metaspace method. Some methods (e.g. intrinsics for | |
100 * signature-polymorphic method handle methods) have their own constant pool instead of the | |
101 * one from their holder. | |
102 */ | |
103 final long metaspaceConstantPool = unsafe.getAddress(constMethod + config.constMethodConstantsOffset); | |
104 this.constantPool = new HotSpotConstantPool(metaspaceConstantPool); | |
105 | |
106 final int nameIndex = unsafe.getChar(constMethod + config.constMethodNameIndexOffset); | |
107 this.name = constantPool.lookupUtf8(nameIndex); | |
108 | |
109 final int signatureIndex = unsafe.getChar(constMethod + config.constMethodSignatureIndexOffset); | |
110 this.signature = (HotSpotSignature) constantPool.lookupSignature(signatureIndex); | |
111 } | |
112 | |
113 /** | |
114 * Returns a pointer to this method's constant method data structure ( | |
115 * {@code Method::_constMethod}). | |
116 * | |
117 * @return pointer to this method's ConstMethod | |
118 */ | |
119 private long getConstMethod() { | |
120 assert metaspaceMethod != 0; | |
121 return unsafe.getAddress(metaspaceMethod + runtime().getConfig().methodConstMethodOffset); | |
122 } | |
123 | |
124 @Override | |
125 public boolean equals(Object obj) { | |
126 if (obj instanceof HotSpotResolvedJavaMethodImpl) { | |
127 HotSpotResolvedJavaMethodImpl that = (HotSpotResolvedJavaMethodImpl) obj; | |
128 return that.metaspaceMethod == metaspaceMethod; | |
129 } | |
130 return false; | |
131 } | |
132 | |
133 @Override | |
134 public int hashCode() { | |
135 return (int) metaspaceMethod; | |
136 } | |
137 | |
138 /** | |
139 * Returns this method's flags ({@code Method::_flags}). | |
140 * | |
141 * @return flags of this method | |
142 */ | |
143 private int getFlags() { | |
144 return unsafe.getByte(metaspaceMethod + runtime().getConfig().methodFlagsOffset); | |
145 } | |
146 | |
147 /** | |
148 * Returns this method's constant method flags ({@code ConstMethod::_flags}). | |
149 * | |
150 * @return flags of this method's ConstMethod | |
151 */ | |
152 private int getConstMethodFlags() { | |
153 return unsafe.getChar(getConstMethod() + runtime().getConfig().constMethodFlagsOffset); | |
154 } | |
155 | |
156 @Override | |
157 public HotSpotResolvedObjectTypeImpl getDeclaringClass() { | |
158 return holder; | |
159 } | |
160 | |
161 /** | |
162 * Gets the address of the C++ Method object for this method. | |
163 */ | |
164 public JavaConstant getMetaspaceMethodConstant() { | |
165 return HotSpotMetaspaceConstantImpl.forMetaspaceObject(getHostWordKind(), metaspaceMethod, this, false); | |
166 } | |
167 | |
168 public long getMetaspaceMethod() { | |
169 return metaspaceMethod; | |
170 } | |
171 | |
172 @Override | |
173 public JavaConstant getEncoding() { | |
174 return getMetaspaceMethodConstant(); | |
175 } | |
176 | |
177 /** | |
178 * Gets the complete set of modifiers for this method which includes the JVM specification | |
179 * modifiers as well as the HotSpot internal modifiers. | |
180 */ | |
181 public int getAllModifiers() { | |
182 return unsafe.getInt(metaspaceMethod + runtime().getConfig().methodAccessFlagsOffset); | |
183 } | |
184 | |
185 @Override | |
186 public int getModifiers() { | |
187 return getAllModifiers() & Modifier.methodModifiers(); | |
188 } | |
189 | |
190 @Override | |
191 public boolean canBeStaticallyBound() { | |
192 return (isFinal() || isPrivate() || isStatic() || holder.isFinal()) && isConcrete(); | |
193 } | |
194 | |
195 @Override | |
196 public byte[] getCode() { | |
197 if (getCodeSize() == 0) { | |
198 return null; | |
199 } | |
200 if (code == null && holder.isLinked()) { | |
201 code = runtime().getCompilerToVM().getBytecode(metaspaceMethod); | |
202 assert code.length == getCodeSize() : "expected: " + getCodeSize() + ", actual: " + code.length; | |
203 } | |
204 return code; | |
205 } | |
206 | |
207 @Override | |
208 public int getCodeSize() { | |
209 return unsafe.getChar(getConstMethod() + runtime().getConfig().constMethodCodeSizeOffset); | |
210 } | |
211 | |
212 @Override | |
213 public ExceptionHandler[] getExceptionHandlers() { | |
214 final boolean hasExceptionTable = (getConstMethodFlags() & runtime().getConfig().constMethodHasExceptionTable) != 0; | |
215 if (!hasExceptionTable) { | |
216 return new ExceptionHandler[0]; | |
217 } | |
218 | |
219 HotSpotVMConfig config = runtime().getConfig(); | |
220 final int exceptionTableLength = runtime().getCompilerToVM().exceptionTableLength(metaspaceMethod); | |
221 ExceptionHandler[] handlers = new ExceptionHandler[exceptionTableLength]; | |
222 long exceptionTableElement = runtime().getCompilerToVM().exceptionTableStart(metaspaceMethod); | |
223 | |
224 for (int i = 0; i < exceptionTableLength; i++) { | |
225 final int startPc = unsafe.getChar(exceptionTableElement + config.exceptionTableElementStartPcOffset); | |
226 final int endPc = unsafe.getChar(exceptionTableElement + config.exceptionTableElementEndPcOffset); | |
227 final int handlerPc = unsafe.getChar(exceptionTableElement + config.exceptionTableElementHandlerPcOffset); | |
228 int catchTypeIndex = unsafe.getChar(exceptionTableElement + config.exceptionTableElementCatchTypeIndexOffset); | |
229 | |
230 JavaType catchType; | |
231 if (catchTypeIndex == 0) { | |
232 catchType = null; | |
233 } else { | |
234 final int opcode = -1; // opcode is not used | |
235 catchType = constantPool.lookupType(catchTypeIndex, opcode); | |
236 | |
237 // Check for Throwable which catches everything. | |
238 if (catchType instanceof HotSpotResolvedObjectTypeImpl) { | |
239 HotSpotResolvedObjectTypeImpl resolvedType = (HotSpotResolvedObjectTypeImpl) catchType; | |
240 if (resolvedType.mirror() == Throwable.class) { | |
241 catchTypeIndex = 0; | |
242 catchType = null; | |
243 } | |
244 } | |
245 } | |
246 handlers[i] = new ExceptionHandler(startPc, endPc, handlerPc, catchTypeIndex, catchType); | |
247 | |
248 // Go to the next ExceptionTableElement | |
249 exceptionTableElement += config.exceptionTableElementSize; | |
250 } | |
251 | |
252 return handlers; | |
253 } | |
254 | |
255 /** | |
256 * Returns true if this method has a {@code CallerSensitive} annotation. | |
257 * | |
258 * @return true if CallerSensitive annotation present, false otherwise | |
259 */ | |
260 public boolean isCallerSensitive() { | |
261 return (getFlags() & runtime().getConfig().methodFlagsCallerSensitive) != 0; | |
262 } | |
263 | |
264 /** | |
265 * Returns true if this method has a {@code ForceInline} annotation. | |
266 * | |
267 * @return true if ForceInline annotation present, false otherwise | |
268 */ | |
269 public boolean isForceInline() { | |
270 return (getFlags() & runtime().getConfig().methodFlagsForceInline) != 0; | |
271 } | |
272 | |
273 /** | |
274 * Returns true if this method has a {@code DontInline} annotation. | |
275 * | |
276 * @return true if DontInline annotation present, false otherwise | |
277 */ | |
278 public boolean isDontInline() { | |
279 return (getFlags() & runtime().getConfig().methodFlagsDontInline) != 0; | |
280 } | |
281 | |
282 /** | |
283 * Manually adds a DontInline annotation to this method. | |
284 */ | |
285 public void setNotInlineable() { | |
286 runtime().getCompilerToVM().doNotInlineOrCompile(metaspaceMethod); | |
287 } | |
288 | |
289 /** | |
290 * Returns true if this method is one of the special methods that is ignored by security stack | |
291 * walks. | |
292 * | |
293 * @return true if special method ignored by security stack walks, false otherwise | |
294 */ | |
295 public boolean ignoredBySecurityStackWalk() { | |
296 return runtime().getCompilerToVM().methodIsIgnoredBySecurityStackWalk(metaspaceMethod); | |
297 } | |
298 | |
299 public boolean hasBalancedMonitors() { | |
300 HotSpotVMConfig config = runtime().getConfig(); | |
301 final int modifiers = getAllModifiers(); | |
302 | |
303 // Method has no monitorenter/exit bytecodes. | |
304 if ((modifiers & config.jvmAccHasMonitorBytecodes) == 0) { | |
305 return false; | |
306 } | |
307 | |
308 // Check to see if a previous compilation computed the monitor-matching analysis. | |
309 if ((modifiers & config.jvmAccMonitorMatch) != 0) { | |
310 return true; | |
311 } | |
312 | |
313 // This either happens only once if monitors are balanced or very rarely multiple-times. | |
314 return runtime().getCompilerToVM().hasBalancedMonitors(metaspaceMethod); | |
315 } | |
316 | |
317 @Override | |
318 public boolean isClassInitializer() { | |
319 return "<clinit>".equals(name) && isStatic(); | |
320 } | |
321 | |
322 @Override | |
323 public boolean isConstructor() { | |
324 return "<init>".equals(name) && !isStatic(); | |
325 } | |
326 | |
327 @Override | |
328 public int getMaxLocals() { | |
329 if (isAbstract() || isNative()) { | |
330 return 0; | |
331 } | |
332 HotSpotVMConfig config = runtime().getConfig(); | |
333 return unsafe.getChar(getConstMethod() + config.methodMaxLocalsOffset); | |
334 } | |
335 | |
336 @Override | |
337 public int getMaxStackSize() { | |
338 if (isAbstract() || isNative()) { | |
339 return 0; | |
340 } | |
341 HotSpotVMConfig config = runtime().getConfig(); | |
342 return config.extraStackEntries + unsafe.getChar(getConstMethod() + config.constMethodMaxStackOffset); | |
343 } | |
344 | |
345 @Override | |
346 public StackTraceElement asStackTraceElement(int bci) { | |
347 if (bci < 0 || bci >= getCodeSize()) { | |
348 // HotSpot code can only construct stack trace elements for valid bcis | |
349 StackTraceElement ste = runtime().getCompilerToVM().getStackTraceElement(metaspaceMethod, 0); | |
350 return new StackTraceElement(ste.getClassName(), ste.getMethodName(), ste.getFileName(), -1); | |
351 } | |
352 return runtime().getCompilerToVM().getStackTraceElement(metaspaceMethod, bci); | |
353 } | |
354 | |
355 public ResolvedJavaMethod uniqueConcreteMethod(HotSpotResolvedObjectType receiver) { | |
356 if (receiver.isInterface()) { | |
357 // Cannot trust interfaces. Because of: | |
358 // interface I { void foo(); } | |
359 // class A { public void foo() {} } | |
360 // class B extends A implements I { } | |
361 // class C extends B { public void foo() { } } | |
362 // class D extends B { } | |
363 // Would lead to identify C.foo() as the unique concrete method for I.foo() without | |
364 // seeing A.foo(). | |
365 return null; | |
366 } | |
367 long metaspaceKlass = ((HotSpotResolvedObjectTypeImpl) receiver).getMetaspaceKlass(); | |
368 final long uniqueConcreteMethod = runtime().getCompilerToVM().findUniqueConcreteMethod(metaspaceKlass, metaspaceMethod); | |
369 if (uniqueConcreteMethod == 0) { | |
370 return null; | |
371 } | |
372 return fromMetaspace(uniqueConcreteMethod); | |
373 } | |
374 | |
375 @Override | |
376 public HotSpotSignature getSignature() { | |
377 return signature; | |
378 } | |
379 | |
380 /** | |
381 * Gets the value of {@code Method::_code}. | |
382 * | |
383 * @return the value of {@code Method::_code} | |
384 */ | |
385 private long getCompiledCode() { | |
386 HotSpotVMConfig config = runtime().getConfig(); | |
387 return unsafe.getAddress(metaspaceMethod + config.methodCodeOffset); | |
388 } | |
389 | |
390 /** | |
391 * Returns whether this method has compiled code. | |
392 * | |
393 * @return true if this method has compiled code, false otherwise | |
394 */ | |
395 public boolean hasCompiledCode() { | |
396 return getCompiledCode() != 0L; | |
397 } | |
398 | |
399 /** | |
400 * @param level | |
401 * @return true if the currently installed code was generated at {@code level}. | |
402 */ | |
403 public boolean hasCompiledCodeAtLevel(int level) { | |
404 long compiledCode = getCompiledCode(); | |
405 if (compiledCode != 0) { | |
406 return unsafe.getInt(compiledCode + runtime().getConfig().nmethodCompLevelOffset) == level; | |
407 } | |
408 return false; | |
409 } | |
410 | |
411 private static final String TraceMethodDataFilter = System.getProperty("graal.traceMethodDataFilter"); | |
412 | |
413 @Override | |
414 public ProfilingInfo getProfilingInfo() { | |
415 return getProfilingInfo(true, true); | |
416 } | |
417 | |
418 public ProfilingInfo getCompilationProfilingInfo(boolean isOSR) { | |
419 return getProfilingInfo(!isOSR, isOSR); | |
420 } | |
421 | |
422 private ProfilingInfo getProfilingInfo(boolean includeNormal, boolean includeOSR) { | |
423 ProfilingInfo info; | |
424 | |
425 if (UseProfilingInformation.getValue() && methodData == null) { | |
426 long metaspaceMethodData = unsafe.getAddress(metaspaceMethod + runtime().getConfig().methodDataOffset); | |
427 if (metaspaceMethodData != 0) { | |
428 methodData = new HotSpotMethodData(metaspaceMethodData); | |
429 if (TraceMethodDataFilter != null && this.format("%H.%n").contains(TraceMethodDataFilter)) { | |
430 TTY.println("Raw method data for " + this.format("%H.%n(%p)") + ":"); | |
431 TTY.println(methodData.toString()); | |
432 } | |
433 } | |
434 } | |
435 | |
436 if (methodData == null || (!methodData.hasNormalData() && !methodData.hasExtraData())) { | |
437 // Be optimistic and return false for exceptionSeen. A methodDataOop is allocated in | |
438 // case of a deoptimization. | |
439 info = DefaultProfilingInfo.get(TriState.FALSE); | |
440 } else { | |
441 info = new HotSpotProfilingInfo(methodData, this, includeNormal, includeOSR); | |
442 } | |
443 return info; | |
444 } | |
445 | |
446 @Override | |
447 public void reprofile() { | |
448 runtime().getCompilerToVM().reprofile(metaspaceMethod); | |
449 } | |
450 | |
451 @Override | |
452 public ConstantPool getConstantPool() { | |
453 return constantPool; | |
454 } | |
455 | |
456 @Override | |
457 public Annotation[][] getParameterAnnotations() { | |
458 if (isConstructor()) { | |
459 Constructor<?> javaConstructor = toJavaConstructor(); | |
460 return javaConstructor == null ? null : javaConstructor.getParameterAnnotations(); | |
461 } | |
462 Method javaMethod = toJava(); | |
463 return javaMethod == null ? null : javaMethod.getParameterAnnotations(); | |
464 } | |
465 | |
466 @Override | |
467 public Annotation[] getAnnotations() { | |
468 if (isConstructor()) { | |
469 Constructor<?> javaConstructor = toJavaConstructor(); | |
470 return javaConstructor == null ? new Annotation[0] : javaConstructor.getAnnotations(); | |
471 } | |
472 Method javaMethod = toJava(); | |
473 return javaMethod == null ? new Annotation[0] : javaMethod.getAnnotations(); | |
474 } | |
475 | |
476 @Override | |
477 public <T extends Annotation> T getAnnotation(Class<T> annotationClass) { | |
478 if (isConstructor()) { | |
479 Constructor<?> javaConstructor = toJavaConstructor(); | |
480 return javaConstructor == null ? null : javaConstructor.getAnnotation(annotationClass); | |
481 } | |
482 Method javaMethod = toJava(); | |
483 return javaMethod == null ? null : javaMethod.getAnnotation(annotationClass); | |
484 } | |
485 | |
486 @Override | |
487 public boolean isSynthetic() { | |
488 int modifiers = getAllModifiers(); | |
489 return (runtime().getConfig().syntheticFlag & modifiers) != 0; | |
490 } | |
491 | |
492 public boolean isDefault() { | |
493 if (isConstructor()) { | |
494 return false; | |
495 } | |
496 // Copied from java.lang.Method.isDefault() | |
497 int mask = Modifier.ABSTRACT | Modifier.PUBLIC | Modifier.STATIC; | |
498 return ((getModifiers() & mask) == Modifier.PUBLIC) && getDeclaringClass().isInterface(); | |
499 } | |
500 | |
501 @Override | |
502 public Type[] getGenericParameterTypes() { | |
503 if (isConstructor()) { | |
504 Constructor<?> javaConstructor = toJavaConstructor(); | |
505 return javaConstructor == null ? null : javaConstructor.getGenericParameterTypes(); | |
506 } | |
507 Method javaMethod = toJava(); | |
508 return javaMethod == null ? null : javaMethod.getGenericParameterTypes(); | |
509 } | |
510 | |
511 public Class<?>[] signatureToTypes() { | |
512 Signature sig = getSignature(); | |
513 int count = sig.getParameterCount(false); | |
514 Class<?>[] result = new Class<?>[count]; | |
515 for (int i = 0; i < result.length; ++i) { | |
516 JavaType parameterType = sig.getParameterType(i, holder); | |
517 HotSpotResolvedJavaType resolvedParameterType = (HotSpotResolvedJavaType) parameterType.resolve(holder); | |
518 result[i] = resolvedParameterType.mirror(); | |
519 } | |
520 return result; | |
521 } | |
522 | |
523 private Method toJava() { | |
524 if (toJavaCache != null) { | |
525 return (Method) toJavaCache; | |
526 } | |
527 try { | |
528 Method result = holder.mirror().getDeclaredMethod(name, signatureToTypes()); | |
529 toJavaCache = result; | |
530 return result; | |
531 } catch (NoSuchMethodException | NoClassDefFoundError e) { | |
532 return null; | |
533 } | |
534 } | |
535 | |
536 private Constructor<?> toJavaConstructor() { | |
537 if (toJavaCache != null) { | |
538 return (Constructor<?>) toJavaCache; | |
539 } | |
540 try { | |
541 Constructor<?> result = holder.mirror().getDeclaredConstructor(signatureToTypes()); | |
542 toJavaCache = result; | |
543 return result; | |
544 } catch (NoSuchMethodException | NoClassDefFoundError e) { | |
545 return null; | |
546 } | |
547 } | |
548 | |
549 @Override | |
550 public boolean canBeInlined() { | |
551 if (isDontInline()) { | |
552 return false; | |
553 } | |
554 return runtime().getCompilerToVM().canInlineMethod(metaspaceMethod); | |
555 } | |
556 | |
557 @Override | |
558 public boolean shouldBeInlined() { | |
559 if (isForceInline()) { | |
560 return true; | |
561 } | |
562 return runtime().getCompilerToVM().shouldInlineMethod(metaspaceMethod); | |
563 } | |
564 | |
565 @Override | |
566 public LineNumberTable getLineNumberTable() { | |
567 final boolean hasLineNumberTable = (getConstMethodFlags() & runtime().getConfig().constMethodHasLineNumberTable) != 0; | |
568 if (!hasLineNumberTable) { | |
569 return null; | |
570 } | |
571 | |
572 long[] values = runtime().getCompilerToVM().getLineNumberTable(metaspaceMethod); | |
573 if (values.length == 0) { | |
574 // Empty table so treat is as non-existent | |
575 return null; | |
576 } | |
577 assert values.length % 2 == 0; | |
578 int[] bci = new int[values.length / 2]; | |
579 int[] line = new int[values.length / 2]; | |
580 | |
581 for (int i = 0; i < values.length / 2; i++) { | |
582 bci[i] = (int) values[i * 2]; | |
583 line[i] = (int) values[i * 2 + 1]; | |
584 } | |
585 | |
586 return new LineNumberTableImpl(line, bci); | |
587 } | |
588 | |
589 @Override | |
590 public LocalVariableTable getLocalVariableTable() { | |
591 final boolean hasLocalVariableTable = (getConstMethodFlags() & runtime().getConfig().constMethodHasLocalVariableTable) != 0; | |
592 if (!hasLocalVariableTable) { | |
593 return null; | |
594 } | |
595 | |
596 HotSpotVMConfig config = runtime().getConfig(); | |
597 long localVariableTableElement = runtime().getCompilerToVM().getLocalVariableTableStart(metaspaceMethod); | |
598 final int localVariableTableLength = runtime().getCompilerToVM().getLocalVariableTableLength(metaspaceMethod); | |
599 Local[] locals = new Local[localVariableTableLength]; | |
600 | |
601 for (int i = 0; i < localVariableTableLength; i++) { | |
602 final int startBci = unsafe.getChar(localVariableTableElement + config.localVariableTableElementStartBciOffset); | |
603 final int endBci = startBci + unsafe.getChar(localVariableTableElement + config.localVariableTableElementLengthOffset); | |
604 final int nameCpIndex = unsafe.getChar(localVariableTableElement + config.localVariableTableElementNameCpIndexOffset); | |
605 final int typeCpIndex = unsafe.getChar(localVariableTableElement + config.localVariableTableElementDescriptorCpIndexOffset); | |
606 final int slot = unsafe.getChar(localVariableTableElement + config.localVariableTableElementSlotOffset); | |
607 | |
608 String localName = getConstantPool().lookupUtf8(nameCpIndex); | |
609 String localType = getConstantPool().lookupUtf8(typeCpIndex); | |
610 | |
611 locals[i] = new LocalImpl(localName, runtime().lookupType(localType, holder, false), startBci, endBci, slot); | |
612 | |
613 // Go to the next LocalVariableTableElement | |
614 localVariableTableElement += config.localVariableTableElementSize; | |
615 } | |
616 | |
617 return new LocalVariableTableImpl(locals); | |
618 } | |
619 | |
620 /** | |
621 * Returns the offset of this method into the v-table. The method must have a v-table entry as | |
622 * indicated by {@link #isInVirtualMethodTable(ResolvedJavaType)}, otherwise an exception is | |
623 * thrown. | |
624 * | |
625 * @return the offset of this method into the v-table | |
626 */ | |
627 public int vtableEntryOffset(ResolvedJavaType resolved) { | |
628 if (!isInVirtualMethodTable(resolved)) { | |
629 throw new JVMCIError("%s does not have a vtable entry", this); | |
630 } | |
631 HotSpotVMConfig config = runtime().getConfig(); | |
632 final int vtableIndex = getVtableIndex((HotSpotResolvedObjectTypeImpl) resolved); | |
633 return config.instanceKlassVtableStartOffset + vtableIndex * config.vtableEntrySize + config.vtableEntryMethodOffset; | |
634 } | |
635 | |
636 @Override | |
637 public boolean isInVirtualMethodTable(ResolvedJavaType resolved) { | |
638 if (resolved instanceof HotSpotResolvedObjectTypeImpl) { | |
639 HotSpotResolvedObjectTypeImpl hotspotResolved = (HotSpotResolvedObjectTypeImpl) resolved; | |
640 int vtableIndex = getVtableIndex(hotspotResolved); | |
641 return vtableIndex >= 0 && vtableIndex < hotspotResolved.getVtableLength(); | |
642 } | |
643 return false; | |
644 } | |
645 | |
646 private int getVtableIndex(HotSpotResolvedObjectTypeImpl resolved) { | |
647 if (!holder.isLinked()) { | |
648 return runtime().getConfig().invalidVtableIndex; | |
649 } | |
650 if (holder.isInterface()) { | |
651 if (resolved.isInterface()) { | |
652 return runtime().getConfig().invalidVtableIndex; | |
653 } | |
654 return getVtableIndexForInterface(resolved); | |
655 } | |
656 return getVtableIndex(); | |
657 } | |
658 | |
659 /** | |
660 * Returns this method's virtual table index. | |
661 * | |
662 * @return virtual table index | |
663 */ | |
664 private int getVtableIndex() { | |
665 assert !holder.isInterface(); | |
666 HotSpotVMConfig config = runtime().getConfig(); | |
667 int result = unsafe.getInt(metaspaceMethod + config.methodVtableIndexOffset); | |
668 assert result >= config.nonvirtualVtableIndex : "must be linked"; | |
669 return result; | |
670 } | |
671 | |
672 private int getVtableIndexForInterface(ResolvedJavaType resolved) { | |
673 HotSpotResolvedObjectTypeImpl hotspotType = (HotSpotResolvedObjectTypeImpl) resolved; | |
674 return runtime().getCompilerToVM().getVtableIndexForInterface(hotspotType.getMetaspaceKlass(), getMetaspaceMethod()); | |
675 } | |
676 | |
677 /** | |
678 * The {@link SpeculationLog} for methods compiled by Graal hang off this per-declaring-type | |
679 * {@link ClassValue}. The raw Method* value is safe to use as a key in the map as a) it is | |
680 * never moves and b) we never read from it. | |
681 * <p> | |
682 * One implication is that we will preserve {@link SpeculationLog}s for methods that have been | |
683 * redefined via class redefinition. It's tempting to periodically flush such logs but we cannot | |
684 * read the JVM_ACC_IS_OBSOLETE bit (or anything else) via the raw pointer as obsoleted methods | |
685 * are subject to clean up and deletion (see InstanceKlass::purge_previous_versions_internal). | |
686 */ | |
687 private static final ClassValue<Map<Long, SpeculationLog>> SpeculationLogs = new ClassValue<Map<Long, SpeculationLog>>() { | |
688 @Override | |
689 protected Map<Long, SpeculationLog> computeValue(java.lang.Class<?> type) { | |
690 return new HashMap<>(4); | |
691 } | |
692 }; | |
693 | |
694 public SpeculationLog getSpeculationLog() { | |
695 Map<Long, SpeculationLog> map = SpeculationLogs.get(holder.mirror()); | |
696 synchronized (map) { | |
697 SpeculationLog log = map.get(this.metaspaceMethod); | |
698 if (log == null) { | |
699 log = new HotSpotSpeculationLog(); | |
700 map.put(metaspaceMethod, log); | |
701 } | |
702 return log; | |
703 } | |
704 } | |
705 | |
706 public int intrinsicId() { | |
707 HotSpotVMConfig config = runtime().getConfig(); | |
708 return unsafe.getByte(metaspaceMethod + config.methodIntrinsicIdOffset) & 0xff; | |
709 } | |
710 | |
711 @Override | |
712 public JavaConstant invoke(JavaConstant receiver, JavaConstant[] arguments) { | |
713 assert !isConstructor(); | |
714 Method javaMethod = toJava(); | |
715 javaMethod.setAccessible(true); | |
716 | |
717 Object[] objArguments = new Object[arguments.length]; | |
718 for (int i = 0; i < arguments.length; i++) { | |
719 objArguments[i] = HotSpotObjectConstantImpl.asBoxedValue(arguments[i]); | |
720 } | |
721 Object objReceiver = receiver != null && !receiver.isNull() ? ((HotSpotObjectConstantImpl) receiver).object() : null; | |
722 | |
723 try { | |
724 Object objResult = javaMethod.invoke(objReceiver, objArguments); | |
725 return javaMethod.getReturnType() == void.class ? null : HotSpotObjectConstantImpl.forBoxedValue(getSignature().getReturnKind(), objResult); | |
726 | |
727 } catch (IllegalAccessException | InvocationTargetException ex) { | |
728 throw new IllegalArgumentException(ex); | |
729 } | |
730 } | |
731 | |
732 /** | |
733 * Allocates a compile id for this method by asking the VM for one. | |
734 * | |
735 * @param entryBCI entry bci | |
736 * @return compile id | |
737 */ | |
738 public int allocateCompileId(int entryBCI) { | |
739 return runtime().getCompilerToVM().allocateCompileId(metaspaceMethod, entryBCI); | |
740 } | |
741 | |
742 public boolean hasCodeAtLevel(int entryBCI, int level) { | |
743 if (entryBCI == runtime().getConfig().invocationEntryBci) { | |
744 return hasCompiledCodeAtLevel(level); | |
745 } | |
746 return runtime().getCompilerToVM().hasCompiledCodeForOSR(metaspaceMethod, entryBCI, level); | |
747 } | |
748 | |
749 private int methodId; | |
750 | |
751 public void setMethodId(int id) { | |
752 assert methodId == 0; | |
753 methodId = id; | |
754 } | |
755 | |
756 public int getMethodId() { | |
757 return methodId; | |
758 } | |
759 } |