Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/Frame.java @ 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 |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children | c5f6a7397eb1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 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 | |
| 25 package sun.jvm.hotspot.runtime; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.*; | |
| 30 import sun.jvm.hotspot.code.*; | |
| 31 import sun.jvm.hotspot.compiler.*; | |
| 32 import sun.jvm.hotspot.c1.*; | |
| 33 import sun.jvm.hotspot.debugger.*; | |
| 34 import sun.jvm.hotspot.interpreter.*; | |
| 35 import sun.jvm.hotspot.oops.*; | |
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36 import sun.jvm.hotspot.runtime.sparc.SPARCFrame; |
| 0 | 37 import sun.jvm.hotspot.types.*; |
| 38 import sun.jvm.hotspot.utilities.*; | |
| 39 | |
| 40 /** <P> A frame represents a physical stack frame (an activation). | |
| 41 Frames can be C or Java frames, and the Java frames can be | |
| 42 interpreted or compiled. In contrast, vframes represent | |
| 43 source-level activations, so that one physical frame can | |
| 44 correspond to multiple source level frames because of inlining. | |
| 45 </P> | |
| 46 | |
| 47 <P> NOTE that this is not a VMObject and does not wrap an Address | |
| 48 -- this is an actual port of the VM's Frame code to Java. </P> | |
| 49 | |
| 50 <P> NOTE also that this is incomplete -- just trying to get | |
| 51 reading of interpreted frames working for now, so all non-core and | |
| 52 setter methods are removed for now. (FIXME) </P> */ | |
| 53 | |
| 54 public abstract class Frame implements Cloneable { | |
| 55 /** A raw stack pointer. The accessor getSP() will return a real (usable) | |
| 56 stack pointer (e.g. from Thread::last_Java_sp) */ | |
| 57 protected Address raw_sp; | |
| 58 | |
| 59 /** Program counter (the next instruction after the call) */ | |
| 60 protected Address pc; | |
| 61 protected boolean deoptimized; | |
| 62 | |
| 63 public Frame() { | |
| 64 deoptimized = false; | |
| 65 } | |
| 66 | |
| 67 static { | |
| 68 VM.registerVMInitializedObserver(new Observer() { | |
| 69 public void update(Observable o, Object data) { | |
| 70 initialize(VM.getVM().getTypeDataBase()); | |
| 71 } | |
| 72 }); | |
| 73 } | |
| 74 | |
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75 /** Size of ConstMethod for computing BCI from BCP (FIXME: hack) */ |
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76 private static long ConstMethodSize; |
| 0 | 77 |
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78 private static int pcReturnOffset; |
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79 |
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80 public static int pcReturnOffset() { |
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81 return pcReturnOffset; |
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82 } |
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83 |
| 0 | 84 private static synchronized void initialize(TypeDataBase db) { |
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85 Type ConstMethodType = db.lookupType("ConstMethod"); |
| 0 | 86 // FIXME: not sure whether alignment here is correct or how to |
| 87 // force it (round up to address size?) | |
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88 ConstMethodSize = ConstMethodType.getSize(); |
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89 |
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90 pcReturnOffset = db.lookupIntConstant("frame::pc_return_offset").intValue(); |
| 0 | 91 } |
| 92 | |
| 93 protected int bcpToBci(Address bcp, ConstMethod cm) { | |
| 94 // bcp will be null for interpreter native methods | |
| 95 // in addition depending on where we catch the system the value can | |
| 96 // be a bcp or a bci. | |
| 97 if (bcp == null) return 0; | |
| 98 long bci = bcp.minus(null); | |
| 99 if (bci >= 0 && bci < cm.getCodeSize()) return (int) bci; | |
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100 return (int) (bcp.minus(cm.getAddress()) - ConstMethodSize); |
| 0 | 101 } |
| 102 | |
| 103 protected int bcpToBci(Address bcp, Method m) { | |
| 104 return bcpToBci(bcp, m.getConstMethod()); | |
| 105 } | |
| 106 | |
| 107 public abstract Object clone(); | |
| 108 | |
| 109 // Accessors | |
| 110 | |
| 111 /** pc: Returns the pc at which this frame will continue normally. | |
| 112 It must point at the beginning of the next instruction to | |
| 113 execute. */ | |
| 114 public Address getPC() { return pc; } | |
| 115 public void setPC(Address newpc) { pc = newpc; } | |
| 116 public boolean isDeoptimized() { return deoptimized; } | |
| 117 | |
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118 public CodeBlob cb() { |
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119 return VM.getVM().getCodeCache().findBlob(getPC()); |
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120 } |
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121 |
| 0 | 122 public abstract Address getSP(); |
| 123 public abstract Address getID(); | |
| 124 public abstract Address getFP(); | |
| 125 | |
| 126 /** testers -- platform dependent */ | |
| 127 public abstract boolean equals(Object arg); | |
| 128 | |
| 129 /** type testers */ | |
| 130 public boolean isInterpretedFrame() { return VM.getVM().getInterpreter().contains(getPC()); } | |
| 131 public boolean isJavaFrame() { | |
| 132 if (isInterpretedFrame()) return true; | |
| 133 if (!VM.getVM().isCore()) { | |
| 134 if (isCompiledFrame()) return true; | |
| 135 } | |
| 136 return false; | |
| 137 } | |
| 138 | |
| 139 /** Java frame called from C? */ | |
| 140 public boolean isEntryFrame() { return VM.getVM().getStubRoutines().returnsToCallStub(getPC()); } | |
| 141 public boolean isNativeFrame() { | |
| 142 if (!VM.getVM().isCore()) { | |
| 143 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 144 return (cb != null && cb.isNativeMethod()); | |
| 145 } else { | |
| 146 return false; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 public boolean isCompiledFrame() { | |
| 151 if (Assert.ASSERTS_ENABLED) { | |
| 152 Assert.that(!VM.getVM().isCore(), "noncore builds only"); | |
| 153 } | |
| 154 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 155 return (cb != null && cb.isJavaMethod()); | |
| 156 } | |
| 157 | |
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158 public boolean isRuntimeFrame() { |
| 0 | 159 if (Assert.ASSERTS_ENABLED) { |
| 160 Assert.that(!VM.getVM().isCore(), "noncore builds only"); | |
| 161 } | |
| 162 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 163 if (cb == null) { | |
| 164 return false; | |
| 165 } | |
| 166 if (cb.isRuntimeStub()) return true; | |
| 167 else return false; | |
| 168 } | |
| 169 | |
| 170 /** oldest frame? (has no sender) FIXME: this is modified from the | |
| 171 C++ code to handle the debugging situation where we try to | |
| 172 traverse the stack for, for example, the signal thread, and | |
| 173 don't find any valid Java frames. Would really like to put the | |
| 174 second half of the conditional in some sort of debugging-only if | |
| 175 statement. */ | |
| 176 // *** FIXME: THE CALL TO isJavaFrame() IS WAY TOO EXPENSIVE!!!!! *** | |
| 177 public boolean isFirstFrame() { return ((isEntryFrame() && entryFrameIsFirst()) || | |
| 178 (!isJavaFrame() && !hasSenderPD())); } | |
| 179 /** same for Java frame */ | |
| 180 public boolean isFirstJavaFrame() { throw new RuntimeException("not yet implemented"); } | |
| 181 | |
| 182 /** This is an addition for debugging purposes on platforms which | |
| 183 have the notion of signals. */ | |
| 184 public abstract boolean isSignalHandlerFrameDbg(); | |
| 185 | |
| 186 /** If this is a signal handler frame (again, on a platform with a | |
| 187 notion of signals), get the signal number. */ | |
| 188 public abstract int getSignalNumberDbg(); | |
| 189 | |
| 190 /** If this is a signal handler frame (again, on a platform with a | |
| 191 notion of signals), get the name of the signal. */ | |
| 192 public abstract String getSignalNameDbg(); | |
| 193 | |
| 194 /** performs sanity checks on interpreted frames. */ | |
| 195 public abstract boolean isInterpretedFrameValid(); | |
| 196 | |
| 197 /** tells whether this frame is marked for deoptimization */ | |
| 198 public boolean shouldBeDeoptimized() { throw new RuntimeException("not yet implemented"); } | |
| 199 | |
| 200 /** tells whether this frame can be deoptimized */ | |
| 201 public boolean canBeDeoptimized() { throw new RuntimeException("not yet implemented"); } | |
| 202 | |
| 203 /** returns the sending frame */ | |
| 204 public abstract Frame sender(RegisterMap map, CodeBlob nm); | |
| 205 | |
| 206 /** equivalent to sender(map, null) */ | |
| 207 public Frame sender(RegisterMap map) { return sender(map, null); } | |
| 208 | |
| 209 /** returns the sender, but skips conversion frames */ | |
| 210 public Frame realSender(RegisterMap map) { | |
| 211 if (!VM.getVM().isCore()) { | |
| 212 Frame result = sender(map); | |
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213 while (result.isRuntimeFrame()) { |
| 0 | 214 result = result.sender(map); |
| 215 } | |
| 216 return result; | |
| 217 } else { | |
| 218 return sender(map); | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 /** Platform-dependent query indicating whether this frame has a | |
| 223 sender. Should return true if it is possible to call sender() at | |
| 224 all on this frame. (This is currently only needed for the | |
| 225 debugging system, if a stack trace is attempted for a Java | |
| 226 thread which has no Java frames, i.e., the signal thread; we | |
| 227 have to know to stop traversal at the bottom frame.) */ | |
| 228 protected abstract boolean hasSenderPD(); | |
| 229 | |
| 230 //-------------------------------------------------------------------------------- | |
| 231 // All frames: | |
| 232 // A low-level interface for vframes: | |
| 233 | |
| 234 /** Returns the address of the requested "slot" on the stack. Slots | |
| 235 are as wide as addresses, so are 32 bits wide on a 32-bit | |
| 236 machine and 64 bits wide on a 64-bit machine. */ | |
| 237 public Address addressOfStackSlot(int slot) { return getFP().addOffsetTo(slot * VM.getVM().getAddressSize()); } | |
| 238 | |
| 239 /** Fetches the OopHandle at the requested slot */ | |
| 240 public OopHandle getOopHandleAt(int slot) { return addressOfStackSlot(slot).getOopHandleAt(0); } | |
| 241 /** Fetches the OopHandle at the slot, adjusted for compiler frames */ | |
| 242 // FIXME: looks like this is only used for compiled frames | |
| 243 // public OopHandle getOopHandleAtAdjusted(MethodOop method, int slot) { return addressOfStackSlot(slot).getOopHandleAt(0); } | |
| 244 // FIXME: Not yet implementable | |
| 245 // public void setOopHandleAt(int slot, OopHandle value) { addressOfStackSlot(slot).setOopHandleAt(0, value); } | |
| 246 | |
| 247 /** Fetches the (Java) int at the requested slot */ | |
| 248 public int getIntAt(int slot) { return addressOfStackSlot(slot).getJIntAt(0); } | |
| 249 // FIXME: Not yet implementable | |
| 250 // public void setIntAt(int slot, int value) { addressOfStackSlot(slot).setJIntAt(0, value); } | |
| 251 | |
| 252 /** returns the frame size in stack slots */ | |
| 253 public abstract long frameSize(); | |
| 254 | |
| 255 /** Link (i.e., the pointer to the previous frame) */ | |
| 256 public abstract Address getLink(); | |
| 257 // public abstract void setLink(Address addr); | |
| 258 | |
| 259 /** Return address */ | |
| 260 public abstract Address getSenderPC(); | |
| 261 // FIXME: currently unimplementable | |
| 262 // public abstract void setSenderPC(Address addr); | |
| 263 | |
| 264 /** The frame's original SP, before any extension by an interpreted | |
| 265 callee; used for packing debug info into vframeArray objects and | |
| 266 vframeArray lookup. */ | |
| 267 public abstract Address getUnextendedSP(); | |
| 268 | |
| 269 /** Returns the stack pointer of the calling frame */ | |
| 270 public abstract Address getSenderSP(); | |
| 271 | |
| 272 //-------------------------------------------------------------------------------- | |
| 273 // Interpreter frames: | |
| 274 // | |
| 275 | |
| 276 public abstract Address addressOfInterpreterFrameLocals(); | |
| 277 | |
| 278 public Address addressOfInterpreterFrameLocal(int slot) { | |
| 279 return addressOfInterpreterFrameLocals().getAddressAt(0).addOffsetTo(-slot * VM.getVM().getAddressSize()); | |
| 280 } | |
| 281 | |
| 282 // FIXME: not yet implementable | |
| 283 // void interpreter_frame_set_locals(intptr_t* locs); | |
| 284 | |
| 285 // NOTE that the accessor "addressOfInterpreterFrameBCX" has | |
| 286 // necessarily been eliminated. The byte code pointer is inherently | |
| 287 // an interior pointer to a Method (the bytecodes follow the | |
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288 // Method data structure) and therefore acquisition of it in |
| 0 | 289 // this system can not be allowed. All accesses to interpreter frame |
| 290 // byte codes are via the byte code index (BCI). | |
| 291 | |
| 292 /** Byte code index. In the underlying frame, what is actually | |
| 293 stored is a byte code pointer (BCP), which is converted to a BCI | |
| 294 and back by the GC when methods are moved. In this system, | |
| 295 interior pointers are not allowed, so we must make the access to | |
| 296 the interpreter frame's BCI atomic with respect to GC. This may | |
| 297 mean implementation with an underlying call through native code | |
| 298 into the VM or a magic sequence in the compiler. (FIXME) */ | |
| 299 public abstract int getInterpreterFrameBCI(); | |
| 300 // FIXME: not yet implementable | |
| 301 // public abstract void setInterpreterFrameBCI(int bci); | |
| 302 | |
| 303 // FIXME: elided for now | |
| 304 // public abstract Address addressOfInterpreterCalleeReceiver(Symbol signature); | |
| 305 | |
| 306 /** Find receiver for an invoke when arguments are just pushed on | |
| 307 stack (i.e., callee stack-frame is not setup) */ | |
| 308 // FIXME: elided for now | |
| 309 // public OopHandle getInterpreterCalleeReceiver(SymbolOop signature) { return addressOfInterpreterCalleeReceiver(signature).getOopHandleAt(0); } | |
| 310 | |
| 311 //-------------------------------------------------------------------------------- | |
| 312 // Expression stack (may go up or down, direction == 1 or -1) | |
| 313 // | |
| 314 | |
| 315 public abstract Address addressOfInterpreterFrameExpressionStack(); | |
| 316 public abstract int getInterpreterFrameExpressionStackDirection(); | |
| 317 public Address addressOfInterpreterFrameExpressionStackSlot(int slot) { | |
| 318 return addressOfInterpreterFrameExpressionStack().addOffsetTo(-slot * VM.getVM().getAddressSize()); | |
| 319 } | |
| 320 | |
| 321 /** Top of expression stack */ | |
| 322 public abstract Address addressOfInterpreterFrameTOS(); | |
| 323 | |
| 324 /** Expression stack from top down */ | |
| 325 public abstract Address addressOfInterpreterFrameTOSAt(int slot); | |
| 326 | |
| 327 /** FIXME: is this portable? */ | |
| 328 public int getInterpreterFrameExpressionStackSize() { | |
| 329 return (int) (1 + (getInterpreterFrameExpressionStackDirection() * | |
| 330 (addressOfInterpreterFrameTOS().minus(addressOfInterpreterFrameExpressionStack())))); | |
| 331 } | |
| 332 | |
| 333 public abstract Address getInterpreterFrameSenderSP(); | |
| 334 // FIXME: not yet implementable | |
| 335 // public abstract void setInterpreterFrameSenderSP(Address senderSP); | |
| 336 | |
| 337 //-------------------------------------------------------------------------------- | |
| 338 // BasicObjectLocks: | |
| 339 // | |
| 340 | |
| 341 public abstract BasicObjectLock interpreterFrameMonitorBegin(); | |
| 342 public abstract BasicObjectLock interpreterFrameMonitorEnd(); | |
| 343 /** NOTE: this returns a size in BYTES in this system! */ | |
| 344 public abstract int interpreterFrameMonitorSize(); | |
| 345 public BasicObjectLock nextMonitorInInterpreterFrame(BasicObjectLock cur) { | |
| 346 return new BasicObjectLock(cur.address().addOffsetTo(interpreterFrameMonitorSize())); | |
| 347 } | |
| 348 public BasicObjectLock previousMonitorInInterpreterFrame(BasicObjectLock cur) { | |
| 349 return new BasicObjectLock(cur.address().addOffsetTo(-1 * interpreterFrameMonitorSize())); | |
| 350 } | |
| 351 | |
| 352 // interpreter_frame_monitor_begin is higher in memory than interpreter_frame_monitor_end | |
| 353 // Interpreter_frame_monitor_begin points to one element beyond the oldest one, | |
| 354 // interpreter_frame_monitor_end points to the youngest one, or if there are none, | |
| 355 // it points to one beyond where the first element will be. | |
| 356 // interpreter_frame_monitor_size reports the allocation size of a monitor in the interpreter stack. | |
| 357 // this value is >= BasicObjectLock::size(), and may be rounded up | |
| 358 | |
| 359 // FIXME: avoiding implementing this for now if possible | |
| 360 // public void interpreter_frame_set_monitor_end(BasicObjectLock* value); | |
| 361 // public void interpreter_frame_verify_monitor(BasicObjectLock* value) const; | |
| 362 // | |
| 363 // Tells whether the current interpreter_frame frame pointer | |
| 364 // corresponds to the old compiled/deoptimized fp | |
| 365 // The receiver used to be a top level frame | |
| 366 // public boolean interpreter_frame_equals_unpacked_fp(intptr_t* fp); | |
| 367 | |
| 368 //-------------------------------------------------------------------------------- | |
| 369 // Method and constant pool cache: | |
| 370 // | |
| 371 | |
| 372 /** Current method */ | |
| 373 public abstract Address addressOfInterpreterFrameMethod(); | |
| 374 | |
| 375 /** Current method */ | |
| 376 public Method getInterpreterFrameMethod() { | |
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377 return (Method)Metadata.instantiateWrapperFor(addressOfInterpreterFrameMethod().getAddressAt(0)); |
| 0 | 378 } |
| 379 | |
| 380 /** Current method */ | |
| 381 // FIXME: not yet implementable | |
| 382 // public void setInterpreterFrameMethod(Method method); | |
| 383 | |
| 384 /** Constant pool cache */ | |
| 385 public abstract Address addressOfInterpreterFrameCPCache(); | |
| 386 /** Constant pool cache */ | |
| 387 public ConstantPoolCache getInterpreterFrameCPCache() { | |
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388 return (ConstantPoolCache) Metadata.instantiateWrapperFor(addressOfInterpreterFrameCPCache().getAddressAt(0)); |
| 0 | 389 } |
| 390 | |
| 391 //-------------------------------------------------------------------------------- | |
| 392 // Entry frames: | |
| 393 // | |
| 394 | |
| 395 public abstract JavaCallWrapper getEntryFrameCallWrapper(); | |
| 396 | |
| 397 // FIXME: add | |
| 398 // inline intptr_t* entry_frame_argument_at(int offset) const; | |
| 399 | |
| 400 | |
| 401 /** Tells whether there is another chunk of Delta stack above */ | |
| 402 public boolean entryFrameIsFirst() { return (getEntryFrameCallWrapper().getLastJavaSP() == null); } | |
| 403 | |
| 404 //-------------------------------------------------------------------------------- | |
| 405 // Safepoints: | |
| 406 // | |
| 407 | |
| 408 protected abstract Address addressOfSavedOopResult(); | |
| 409 protected abstract Address addressOfSavedReceiver(); | |
| 410 | |
| 411 public OopHandle getSavedOopResult() { | |
| 412 return addressOfSavedOopResult().getOopHandleAt(0); | |
| 413 } | |
| 414 | |
| 415 // FIXME: not yet implementable | |
| 416 // public void setSavedOopResult(OopHandle obj); | |
| 417 | |
| 418 public OopHandle getSavedReceiver() { | |
| 419 return addressOfSavedReceiver().getOopHandleAt(0); | |
| 420 } | |
| 421 | |
| 422 // FIXME: not yet implementable | |
| 423 // public void setSavedReceiver(OopHandle obj); | |
| 424 | |
| 425 //-------------------------------------------------------------------------------- | |
| 426 // Oop traversals: | |
| 427 // | |
| 428 | |
| 429 public void oopsInterpretedArgumentsDo(Symbol signature, boolean isStatic, AddressVisitor f) { | |
| 430 ArgumentOopFinder finder = new ArgumentOopFinder(signature, isStatic, this, f); | |
| 431 finder.oopsDo(); | |
| 432 } | |
| 433 | |
| 434 /** Conversion from an VMReg::Name to physical stack location */ | |
| 435 public Address oopMapRegToLocation(VMReg reg, RegisterMap regMap) { | |
| 436 VMReg stack0 = VM.getVM().getVMRegImplInfo().getStack0(); | |
| 437 if (reg.lessThan(stack0)) { | |
| 438 // If it is passed in a register, it got spilled in the stub frame. | |
| 439 return regMap.getLocation(reg); | |
| 440 } else { | |
| 441 long spOffset = VM.getVM().getAddressSize() * reg.minus(stack0); | |
| 442 return getUnextendedSP().addOffsetTo(spOffset); | |
| 443 } | |
| 444 } | |
| 445 | |
| 446 public void oopsDo(AddressVisitor oopVisitor, RegisterMap map) { | |
| 447 if (isInterpretedFrame()) { | |
| 448 oopsInterpretedDo(oopVisitor, map); | |
| 449 } else if (isEntryFrame()) { | |
| 450 oopsEntryDo(oopVisitor, map); | |
| 451 } else if (VM.getVM().getCodeCache().contains(getPC())) { | |
| 452 oopsCodeBlobDo(oopVisitor, map); | |
| 453 } else { | |
| 454 Assert.that(false, "should not reach here"); | |
| 455 } | |
| 456 } | |
| 457 | |
| 458 //-------------------------------------------------------------------------------- | |
| 459 // Printing code | |
| 460 // | |
| 461 | |
| 462 public void printValue() { | |
| 463 printValueOn(System.out); | |
| 464 } | |
| 465 | |
| 466 public void printValueOn(PrintStream tty) { | |
| 467 // FIXME; | |
| 468 } | |
| 469 | |
| 470 public void print() { | |
| 471 printOn(System.out); | |
| 472 } | |
| 473 | |
| 474 public void printOn(PrintStream tty) { | |
| 475 // FIXME; | |
| 476 } | |
| 477 | |
| 478 public void interpreterFramePrintOn(PrintStream tty) { | |
| 479 // FIXME; | |
| 480 } | |
| 481 | |
| 482 //-------------------------------------------------------------------------------- | |
| 483 // Get/set typed locals from a frame. | |
| 484 // Respects platform dependent word-ordering. | |
| 485 // | |
| 486 // FIXME: avoiding implementing this for now if possible | |
| 487 // | |
| 488 // Currently these work only for interpreted frames. | |
| 489 // Todo: make these work for compiled frames. | |
| 490 // | |
| 491 // oop get_local_object(jint slot) const; | |
| 492 // jint get_local_int (jint slot) const; | |
| 493 // jlong get_local_long (jint slot) const; | |
| 494 // jfloat get_local_float (jint slot) const; | |
| 495 // jdouble get_local_double(jint slot) const; | |
| 496 // | |
| 497 // void set_local_object(jint slot, oop obj); | |
| 498 // void set_local_int (jint slot, jint i); | |
| 499 // void set_local_long (jint slot, jlong l); | |
| 500 // void set_local_float (jint slot, jfloat f); | |
| 501 // void set_local_double(jint slot, jdouble d); | |
| 502 | |
| 503 // FIXME: add safepoint code, oops_do, etc. | |
| 504 // FIXME: NOT FINISHED | |
| 505 | |
| 506 | |
| 507 | |
| 508 | |
| 509 | |
| 510 //-------------------------------------------------------------------------------- | |
| 511 // Internals only below this point | |
| 512 // | |
| 513 | |
| 514 // /** Helper method for better factored code in frame::sender */ | |
| 515 // private frame sender_for_entry_frame(RegisterMap* map) { throw new RuntimeException("not yet implemented"); } | |
| 516 // private frame sender_for_interpreter_frame(RegisterMap* map) { throw new RuntimeException("not yet implemented"); } | |
| 517 | |
| 518 // | |
| 519 // Oop iteration (FIXME: NOT FINISHED) | |
| 520 // | |
| 521 | |
| 522 | |
| 523 private static class InterpVisitor implements OopMapVisitor { | |
| 524 private AddressVisitor addressVisitor; | |
| 525 | |
| 526 public InterpVisitor(AddressVisitor oopVisitor) { | |
| 527 setAddressVisitor(oopVisitor); | |
| 528 } | |
| 529 | |
| 530 public void setAddressVisitor(AddressVisitor addressVisitor) { | |
| 531 this.addressVisitor = addressVisitor; | |
| 532 } | |
| 533 | |
| 534 public void visitOopLocation(Address oopAddr) { | |
| 535 addressVisitor.visitAddress(oopAddr); | |
| 536 } | |
| 537 | |
| 538 public void visitDerivedOopLocation(Address baseOopAddr, Address derivedOopAddr) { | |
| 539 if (VM.getVM().isClientCompiler()) { | |
| 540 Assert.that(false, "should not reach here"); | |
| 541 } else if (VM.getVM().isServerCompiler() && | |
| 542 VM.getVM().useDerivedPointerTable()) { | |
| 543 Assert.that(false, "FIXME: add derived pointer table"); | |
| 544 } | |
| 545 } | |
| 546 | |
| 547 public void visitValueLocation(Address valueAddr) { | |
| 548 } | |
| 549 | |
|
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550 public void visitNarrowOopLocation(Address compOopAddr) { |
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551 addressVisitor.visitCompOopAddress(compOopAddr); |
| 0 | 552 } |
| 553 } | |
| 554 | |
| 555 private void oopsInterpretedDo(AddressVisitor oopVisitor, RegisterMap map) { | |
| 556 if (Assert.ASSERTS_ENABLED) { | |
| 557 Assert.that(map != null, "map must be set"); | |
| 558 } | |
| 559 Method m = getInterpreterFrameMethod(); | |
| 560 int bci = getInterpreterFrameBCI(); | |
| 561 | |
| 562 // FIXME: Seeing this sometimes | |
| 563 if (VM.getVM().isDebugging()) { | |
| 564 if (bci < 0 || bci >= m.getCodeSize()) return; | |
| 565 } | |
| 566 | |
| 567 if (Assert.ASSERTS_ENABLED) { | |
| 568 // Assert.that(VM.getVM().getUniverse().heap().isIn(m), "method must be valid oop"); | |
| 569 Assert.that((m.isNative() && (bci == 0)) || ((bci >= 0) && (bci < m.getCodeSize())), "invalid bci value"); | |
| 570 } | |
| 571 | |
| 572 // Handle the monitor elements in the activation | |
| 573 // FIXME: monitor information not yet exposed | |
| 574 // for ( | |
| 575 // BasicObjectLock* current = interpreter_frame_monitor_end(); | |
| 576 // current < interpreter_frame_monitor_begin(); | |
| 577 // current = next_monitor_in_interpreter_frame(current) | |
| 578 // ) { | |
| 579 //#ifdef ASSERT | |
| 580 // interpreter_frame_verify_monitor(current); | |
| 581 //#endif | |
| 582 // current->oops_do(f); | |
| 583 // } | |
| 584 | |
| 585 // process fixed part | |
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586 // FIXME: these are no longer oops, so should anything be visitied? |
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587 // oopVisitor.visitAddress(addressOfInterpreterFrameMethod()); |
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588 // oopVisitor.visitAddress(addressOfInterpreterFrameCPCache()); |
| 0 | 589 |
| 590 // FIXME: expose interpreterFrameMirrorOffset | |
| 591 // if (m.isNative() && m.isStatic()) { | |
| 592 // oopVisitor.visitAddress(getFP().addOffsetTo(interpreterFrameMirrorOffset)); | |
| 593 // } | |
| 594 | |
| 595 int maxLocals = (int) (m.isNative() ? m.getSizeOfParameters() : m.getMaxLocals()); | |
| 596 InterpreterFrameClosure blk = new InterpreterFrameClosure(this, maxLocals, (int) m.getMaxStack(), oopVisitor); | |
| 597 | |
| 598 // process locals & expression stack | |
| 599 OopMapCacheEntry mask = m.getMaskFor(bci); | |
| 600 mask.iterateOop(blk); | |
| 601 | |
| 602 // process a callee's arguments if we are at a call site | |
| 603 // (i.e., if we are at an invoke bytecode) | |
| 604 if (map.getIncludeArgumentOops() && !m.isNative()) { | |
| 605 BytecodeInvoke call = BytecodeInvoke.atCheck(m, bci); | |
| 606 if (call != null && getInterpreterFrameExpressionStackSize() > 0) { | |
| 607 // we are at a call site & the expression stack is not empty | |
| 608 // => process callee's arguments | |
| 609 // | |
| 610 // Note: The expression stack can be empty if an exception | |
| 611 // occured during method resolution/execution. In all | |
| 612 // cases we empty the expression stack completely be- | |
| 613 // fore handling the exception (the exception handling | |
| 614 // code in the interpreter calls a blocking runtime | |
| 615 // routine which can cause this code to be executed). | |
| 616 // (was bug gri 7/27/98) | |
| 617 oopsInterpretedArgumentsDo(call.signature(), call.isInvokestatic(), oopVisitor); | |
| 618 } | |
| 619 } | |
| 620 } | |
| 621 | |
| 622 private void oopsEntryDo (AddressVisitor oopVisitor, RegisterMap regMap) {} | |
| 623 private void oopsCodeBlobDo (AddressVisitor oopVisitor, RegisterMap regMap) { | |
| 624 CodeBlob cb = VM.getVM().getCodeCache().findBlob(getPC()); | |
| 625 if (Assert.ASSERTS_ENABLED) { | |
| 626 Assert.that(cb != null, "sanity check"); | |
| 627 } | |
| 628 if (cb.getOopMaps() != null) { | |
| 629 OopMapSet.oopsDo(this, cb, regMap, oopVisitor, VM.getVM().isDebugging()); | |
| 630 | |
| 631 // FIXME: add in traversal of argument oops (skipping this for | |
| 632 // now until we have the other stuff tested) | |
| 633 | |
| 634 } | |
| 635 | |
| 636 // FIXME: would add this in in non-debugging system | |
| 637 | |
| 638 // If we see an activation belonging to a non_entrant nmethod, we mark it. | |
| 639 // if (cb->is_nmethod() && ((nmethod *)cb)->is_not_entrant()) { | |
| 640 // ((nmethod*)cb)->mark_as_seen_on_stack(); | |
| 641 // } | |
| 642 } | |
| 643 | |
| 644 // FIXME: implement the above routines, plus add | |
| 645 // oops_interpreted_arguments_do and oops_compiled_arguments_do | |
| 646 } | |
| 647 | |
| 648 // | |
| 649 // Only used internally, to iterate through oop slots in interpreted | |
| 650 // frames | |
| 651 // | |
| 652 class InterpreterFrameClosure implements OffsetClosure { | |
| 653 // Used for debugging this code | |
| 654 private static final boolean DEBUG = false; | |
| 655 | |
| 656 private Frame fr; | |
| 657 private AddressVisitor f; | |
| 658 private int maxLocals; | |
| 659 private int maxStack; | |
| 660 | |
| 661 InterpreterFrameClosure(Frame fr, int maxLocals, int maxStack, AddressVisitor f) { | |
| 662 this.fr = fr; | |
| 663 this.maxLocals = maxLocals; | |
| 664 this.maxStack = maxStack; | |
| 665 this.f = f; | |
| 666 } | |
| 667 | |
| 668 public void offsetDo(int offset) { | |
| 669 if (DEBUG) { | |
| 670 System.err.println("Visiting offset " + offset + ", maxLocals = " + maxLocals + | |
| 671 " for frame " + fr + ", method " + | |
| 672 fr.getInterpreterFrameMethod().getMethodHolder().getName().asString() + | |
| 673 fr.getInterpreterFrameMethod().getName().asString()); | |
| 674 } | |
| 675 Address addr; | |
| 676 if (offset < maxLocals) { | |
| 677 addr = fr.addressOfInterpreterFrameLocal(offset); | |
| 678 if (Assert.ASSERTS_ENABLED) { | |
| 679 Assert.that(AddressOps.gte(addr, fr.getSP()), "must be inside the frame"); | |
| 680 } | |
| 681 if (DEBUG) { | |
| 682 System.err.println(" Visiting local at addr " + addr); | |
| 683 } | |
| 684 f.visitAddress(addr); | |
| 685 } else { | |
| 686 addr = fr.addressOfInterpreterFrameExpressionStackSlot(offset - maxLocals); | |
| 687 if (DEBUG) { | |
| 688 System.err.println(" Address of expression stack slot: " + addr + ", TOS = " + | |
| 689 fr.addressOfInterpreterFrameTOS()); | |
| 690 } | |
| 691 // In case of exceptions, the expression stack is invalid and the esp will be reset to express | |
| 692 // this condition. Therefore, we call f only if addr is 'inside' the stack (i.e., addr >= esp for Intel). | |
| 693 boolean inStack; | |
| 694 if (fr.getInterpreterFrameExpressionStackDirection() > 0) { | |
| 695 inStack = AddressOps.lte(addr, fr.addressOfInterpreterFrameTOS()); | |
| 696 } else { | |
| 697 inStack = AddressOps.gte(addr, fr.addressOfInterpreterFrameTOS()); | |
| 698 } | |
| 699 if (inStack) { | |
| 700 if (DEBUG) { | |
| 701 System.err.println(" In stack; visiting location."); | |
| 702 } | |
| 703 f.visitAddress(addr); | |
| 704 } else if (DEBUG) { | |
| 705 System.err.println(" *** WARNING: Address is out of bounds"); | |
| 706 } | |
| 707 } | |
| 708 } | |
| 709 } | |
| 710 | |
| 711 // Only used internally, to find arguments in interpreted frames | |
| 712 class ArgumentOopFinder extends SignatureInfo { | |
| 713 private AddressVisitor f; | |
| 714 private int offset; | |
| 715 private boolean isStatic; | |
| 716 private Frame fr; | |
| 717 | |
| 718 protected void set(int size, int type) { | |
| 719 offset -= size; | |
| 720 if (type == BasicType.getTObject() || type == BasicType.getTArray()) oopOffsetDo(); | |
| 721 } | |
| 722 | |
| 723 private void oopOffsetDo() { | |
| 724 f.visitAddress(fr.addressOfInterpreterFrameTOSAt(offset)); | |
| 725 } | |
| 726 | |
| 727 public ArgumentOopFinder(Symbol signature, boolean isStatic, Frame fr, AddressVisitor f) { | |
| 728 super(signature); | |
| 729 | |
| 730 // compute size of arguments | |
| 731 int argsSize = new ArgumentSizeComputer(signature).size() + (isStatic ? 0 : 1); | |
| 732 if (Assert.ASSERTS_ENABLED) { | |
| 733 Assert.that(!fr.isInterpretedFrame() || | |
| 734 argsSize <= fr.getInterpreterFrameExpressionStackSize(), "args cannot be on stack anymore"); | |
| 735 } | |
| 736 // initialize ArgumentOopFinder | |
| 737 this.f = f; | |
| 738 this.fr = fr; | |
| 739 this.offset = argsSize; | |
| 740 this.isStatic = isStatic; | |
| 741 } | |
| 742 | |
| 743 public void oopsDo() { | |
| 744 if (!isStatic) { | |
| 745 --offset; | |
| 746 oopOffsetDo(); | |
| 747 } | |
| 748 iterateParameters(); | |
| 749 } | |
| 750 } |