Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java @ 3944:35c656d0b685
7090654: nightly failures after 7086585
Reviewed-by: kvn
| author | never |
|---|---|
| date | Wed, 14 Sep 2011 13:57:32 -0700 |
| parents | f6f3bb0ee072 |
| children | 1d7922586cf6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2011, 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.net.*; | |
| 29 import java.util.*; | |
| 30 import java.util.regex.*; | |
| 31 import sun.jvm.hotspot.code.*; | |
| 32 import sun.jvm.hotspot.c1.*; | |
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33 import sun.jvm.hotspot.code.*; |
| 0 | 34 import sun.jvm.hotspot.debugger.*; |
| 35 import sun.jvm.hotspot.interpreter.*; | |
| 36 import sun.jvm.hotspot.memory.*; | |
| 37 import sun.jvm.hotspot.oops.*; | |
| 38 import sun.jvm.hotspot.types.*; | |
| 39 import sun.jvm.hotspot.utilities.*; | |
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40 import sun.jvm.hotspot.runtime.*; |
| 0 | 41 |
| 42 /** <P> This class encapsulates the global state of the VM; the | |
| 43 universe, object heap, interpreter, etc. It is a Singleton and | |
| 44 must be initialized with a call to initialize() before calling | |
| 45 getVM(). </P> | |
| 46 | |
| 47 <P> Many auxiliary classes (i.e., most of the VMObjects) keep | |
| 48 needed field offsets in the form of static Field objects. In a | |
| 49 debugging system, the VM might be shutdown and re-initialized (on | |
| 50 a differently-configured build, i.e., 32- vs. 64-bit), and all old | |
| 51 cached state (including fields and field offsets) must be | |
| 52 flushed. </P> | |
| 53 | |
| 54 <P> An Observer pattern is used to implement the initialization of | |
| 55 such classes. Each such class, in its static initializer, | |
| 56 registers an Observer with the VM class via | |
| 57 VM.registerVMInitializedObserver(). This Observer is guaranteed to | |
| 58 be notified whenever the VM is initialized (or re-initialized). To | |
| 59 implement the first-time initialization, the observer is also | |
| 60 notified when it registers itself with the VM. (For bootstrapping | |
| 61 reasons, this implies that the constructor of VM can not | |
| 62 instantiate any such objects, since VM.soleInstance will not have | |
| 63 been set yet. This is a bootstrapping issue which may have to be | |
| 64 revisited later.) </P> | |
| 65 */ | |
| 66 | |
| 67 public class VM { | |
| 68 private static VM soleInstance; | |
| 69 private static List vmInitializedObservers = new ArrayList(); | |
| 70 private List vmResumedObservers = new ArrayList(); | |
| 71 private List vmSuspendedObservers = new ArrayList(); | |
| 72 private TypeDataBase db; | |
| 73 private boolean isBigEndian; | |
| 74 /** This is only present if in a debugging system */ | |
| 75 private JVMDebugger debugger; | |
| 76 private long stackBias; | |
| 77 private long logAddressSize; | |
| 78 private Universe universe; | |
| 79 private ObjectHeap heap; | |
| 80 private SymbolTable symbols; | |
| 81 private StringTable strings; | |
| 82 private SystemDictionary dict; | |
| 83 private Threads threads; | |
| 84 private ObjectSynchronizer synchronizer; | |
| 85 private JNIHandles handles; | |
| 86 private Interpreter interpreter; | |
| 87 private StubRoutines stubRoutines; | |
| 88 private Bytes bytes; | |
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89 |
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90 private RicochetBlob ricochetBlob; |
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91 |
| 0 | 92 /** Flags indicating whether we are attached to a core, C1, or C2 build */ |
| 93 private boolean usingClientCompiler; | |
| 94 private boolean usingServerCompiler; | |
| 95 /** Flag indicating whether UseTLAB is turned on */ | |
| 96 private boolean useTLAB; | |
| 97 /** alignment constants */ | |
| 98 private boolean isLP64; | |
| 99 private int bytesPerLong; | |
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100 private int objectAlignmentInBytes; |
| 0 | 101 private int minObjAlignmentInBytes; |
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102 private int logMinObjAlignmentInBytes; |
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103 private int heapWordSize; |
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104 private int heapOopSize; |
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105 private int oopSize; |
| 0 | 106 /** This is only present in a non-core build */ |
| 107 private CodeCache codeCache; | |
| 108 /** This is only present in a C1 build */ | |
| 109 private Runtime1 runtime1; | |
| 110 /** These constants come from globalDefinitions.hpp */ | |
| 111 private int invocationEntryBCI; | |
| 112 private int invalidOSREntryBCI; | |
| 113 private ReversePtrs revPtrs; | |
| 114 private VMRegImpl vmregImpl; | |
| 115 | |
| 116 // System.getProperties from debuggee VM | |
| 117 private Properties sysProps; | |
| 118 | |
| 119 // VM version strings come from Abstract_VM_Version class | |
| 120 private String vmRelease; | |
| 121 private String vmInternalInfo; | |
| 122 | |
| 123 private Flag[] commandLineFlags; | |
| 124 private Map flagsMap; | |
| 125 | |
| 126 private static Type intxType; | |
| 127 private static Type uintxType; | |
| 128 private static CIntegerType boolType; | |
| 129 private Boolean sharingEnabled; | |
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130 private Boolean compressedOopsEnabled; |
| 0 | 131 |
| 132 // command line flags supplied to VM - see struct Flag in globals.hpp | |
| 133 public static final class Flag { | |
| 134 private String type; | |
| 135 private String name; | |
| 136 private Address addr; | |
| 137 private String kind; | |
| 3939 | 138 private int origin; |
| 0 | 139 |
| 3939 | 140 private Flag(String type, String name, Address addr, String kind, int origin) { |
| 0 | 141 this.type = type; |
| 142 this.name = name; | |
| 143 this.addr = addr; | |
| 144 this.kind = kind; | |
| 3939 | 145 this.origin = origin; |
| 0 | 146 } |
| 147 | |
| 148 public String getType() { | |
| 149 return type; | |
| 150 } | |
| 151 | |
| 152 public String getName() { | |
| 153 return name; | |
| 154 } | |
| 155 | |
| 156 public Address getAddress() { | |
| 157 return addr; | |
| 158 } | |
| 159 | |
| 160 public String getKind() { | |
| 161 return kind; | |
| 162 } | |
| 163 | |
| 3939 | 164 public int getOrigin() { |
| 165 return origin; | |
| 166 } | |
| 167 | |
| 0 | 168 public boolean isBool() { |
| 169 return type.equals("bool"); | |
| 170 } | |
| 171 | |
| 172 public boolean getBool() { | |
| 173 if (Assert.ASSERTS_ENABLED) { | |
| 174 Assert.that(isBool(), "not a bool flag!"); | |
| 175 } | |
| 176 return addr.getCIntegerAt(0, boolType.getSize(), boolType.isUnsigned()) | |
| 177 != 0; | |
| 178 } | |
| 179 | |
| 180 public boolean isIntx() { | |
| 181 return type.equals("intx"); | |
| 182 } | |
| 183 | |
| 184 public long getIntx() { | |
| 185 if (Assert.ASSERTS_ENABLED) { | |
| 186 Assert.that(isIntx(), "not a intx flag!"); | |
| 187 } | |
| 188 return addr.getCIntegerAt(0, intxType.getSize(), false); | |
| 189 } | |
| 190 | |
| 191 public boolean isUIntx() { | |
| 192 return type.equals("uintx"); | |
| 193 } | |
| 194 | |
| 195 public long getUIntx() { | |
| 196 if (Assert.ASSERTS_ENABLED) { | |
| 197 Assert.that(isUIntx(), "not a uintx flag!"); | |
| 198 } | |
| 199 return addr.getCIntegerAt(0, uintxType.getSize(), true); | |
| 200 } | |
| 201 | |
| 202 public String getValue() { | |
| 203 if (isBool()) { | |
| 204 return new Boolean(getBool()).toString(); | |
| 205 } else if (isIntx()) { | |
| 206 return new Long(getIntx()).toString(); | |
| 207 } else if (isUIntx()) { | |
| 208 return new Long(getUIntx()).toString(); | |
| 209 } else { | |
| 210 return null; | |
| 211 } | |
| 212 } | |
| 213 }; | |
| 214 | |
| 215 private static void checkVMVersion(String vmRelease) { | |
| 216 if (System.getProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck") == null) { | |
| 217 // read sa build version. | |
| 218 String versionProp = "sun.jvm.hotspot.runtime.VM.saBuildVersion"; | |
| 219 String saVersion = saProps.getProperty(versionProp); | |
| 220 if (saVersion == null) | |
| 221 throw new RuntimeException("Missing property " + versionProp); | |
| 222 | |
| 223 // Strip nonproduct VM version substring (note: saVersion doesn't have it). | |
| 224 String vmVersion = vmRelease.replaceAll("(-fastdebug)|(-debug)|(-jvmg)|(-optimized)|(-profiled)",""); | |
| 225 | |
| 226 if (saVersion.equals(vmVersion)) { | |
| 227 // Exact match | |
| 228 return; | |
| 229 } | |
| 230 if (saVersion.indexOf('-') == saVersion.lastIndexOf('-') && | |
| 231 vmVersion.indexOf('-') == vmVersion.lastIndexOf('-')) { | |
| 232 // Throw exception if different release versions: | |
| 233 // <major>.<minor>-b<n> | |
| 234 throw new VMVersionMismatchException(saVersion, vmRelease); | |
| 235 } else { | |
| 236 // Otherwise print warning to allow mismatch not release versions | |
| 237 // during development. | |
| 238 System.err.println("WARNING: Hotspot VM version " + vmRelease + | |
| 239 " does not match with SA version " + saVersion + | |
| 240 "." + " You may see unexpected results. "); | |
| 241 } | |
| 242 } else { | |
| 243 System.err.println("WARNING: You have disabled SA and VM version check. You may be " + | |
| 244 "using incompatible version of SA and you may see unexpected " + | |
| 245 "results."); | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 private static final boolean disableDerivedPrinterTableCheck; | |
| 250 private static final Properties saProps; | |
| 251 | |
| 252 static { | |
| 253 saProps = new Properties(); | |
| 254 URL url = null; | |
| 255 try { | |
| 256 url = VM.class.getClassLoader().getResource("sa.properties"); | |
| 257 saProps.load(new BufferedInputStream(url.openStream())); | |
| 258 } catch (Exception e) { | |
| 259 throw new RuntimeException("Unable to load properties " + | |
| 260 (url == null ? "null" : url.toString()) + | |
| 261 ": " + e.getMessage()); | |
| 262 } | |
| 263 | |
| 264 disableDerivedPrinterTableCheck = System.getProperty("sun.jvm.hotspot.runtime.VM.disableDerivedPointerTableCheck") != null; | |
| 265 } | |
| 266 | |
| 267 private VM(TypeDataBase db, JVMDebugger debugger, boolean isBigEndian) { | |
| 268 this.db = db; | |
| 269 this.debugger = debugger; | |
| 270 this.isBigEndian = isBigEndian; | |
| 271 | |
| 272 // Note that we don't construct universe, heap, threads, | |
| 273 // interpreter, or stubRoutines here (any more). The current | |
| 274 // initialization mechanisms require that the VM be completely set | |
| 275 // up (i.e., out of its constructor, with soleInstance assigned) | |
| 276 // before their static initializers are run. | |
| 277 | |
| 278 if (db.getAddressSize() == 4) { | |
| 279 logAddressSize = 2; | |
| 280 } else if (db.getAddressSize() == 8) { | |
| 281 logAddressSize = 3; | |
| 282 } else { | |
| 283 throw new RuntimeException("Address size " + db.getAddressSize() + " not yet supported"); | |
| 284 } | |
| 285 | |
| 286 // read VM version info | |
| 287 try { | |
| 288 Type vmVersion = db.lookupType("Abstract_VM_Version"); | |
| 289 Address releaseAddr = vmVersion.getAddressField("_s_vm_release").getValue(); | |
| 290 vmRelease = CStringUtilities.getString(releaseAddr); | |
| 291 Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue(); | |
| 292 vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr); | |
| 293 } catch (Exception exp) { | |
| 294 throw new RuntimeException("can't determine target's VM version : " + exp.getMessage()); | |
| 295 } | |
| 296 | |
| 297 checkVMVersion(vmRelease); | |
| 298 | |
| 299 stackBias = db.lookupIntConstant("STACK_BIAS").intValue(); | |
| 300 invocationEntryBCI = db.lookupIntConstant("InvocationEntryBci").intValue(); | |
| 301 invalidOSREntryBCI = db.lookupIntConstant("InvalidOSREntryBci").intValue(); | |
| 302 | |
| 303 // We infer the presence of C1 or C2 from a couple of fields we | |
| 304 // already have present in the type database | |
| 305 { | |
| 306 Type type = db.lookupType("methodOopDesc"); | |
| 307 if (type.getField("_from_compiled_entry", false, false) == null) { | |
| 308 // Neither C1 nor C2 is present | |
| 309 usingClientCompiler = false; | |
| 310 usingServerCompiler = false; | |
| 311 } else { | |
| 312 // Determine whether C2 is present | |
| 3944 | 313 if (db.lookupType("Matcher", false) != null) { |
| 0 | 314 usingServerCompiler = true; |
| 315 } else { | |
| 316 usingClientCompiler = true; | |
| 317 } | |
| 318 } | |
| 319 } | |
| 320 | |
| 321 useTLAB = (db.lookupIntConstant("UseTLAB").intValue() != 0); | |
| 322 | |
| 323 if (debugger != null) { | |
| 324 isLP64 = debugger.getMachineDescription().isLP64(); | |
| 325 } | |
| 326 bytesPerLong = db.lookupIntConstant("BytesPerLong").intValue(); | |
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327 heapWordSize = db.lookupIntConstant("HeapWordSize").intValue(); |
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328 oopSize = db.lookupIntConstant("oopSize").intValue(); |
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329 |
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330 intxType = db.lookupType("intx"); |
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331 uintxType = db.lookupType("uintx"); |
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332 boolType = (CIntegerType) db.lookupType("bool"); |
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333 |
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334 minObjAlignmentInBytes = getObjectAlignmentInBytes(); |
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335 if (minObjAlignmentInBytes == 8) { |
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336 logMinObjAlignmentInBytes = 3; |
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337 } else if (minObjAlignmentInBytes == 16) { |
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338 logMinObjAlignmentInBytes = 4; |
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339 } else { |
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340 throw new RuntimeException("Object alignment " + minObjAlignmentInBytes + " not yet supported"); |
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341 } |
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342 |
| 749 | 343 if (isCompressedOopsEnabled()) { |
| 344 // Size info for oops within java objects is fixed | |
| 345 heapOopSize = (int)getIntSize(); | |
| 346 } else { | |
| 347 heapOopSize = (int)getOopSize(); | |
| 348 } | |
| 0 | 349 } |
| 350 | |
| 351 /** This could be used by a reflective runtime system */ | |
| 352 public static void initialize(TypeDataBase db, boolean isBigEndian) { | |
| 353 if (soleInstance != null) { | |
| 354 throw new RuntimeException("Attempt to initialize VM twice"); | |
| 355 } | |
| 356 soleInstance = new VM(db, null, isBigEndian); | |
| 357 for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { | |
| 358 ((Observer) iter.next()).update(null, null); | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 /** This is used by the debugging system */ | |
| 363 public static void initialize(TypeDataBase db, JVMDebugger debugger) { | |
| 364 if (soleInstance != null) { | |
| 365 throw new RuntimeException("Attempt to initialize VM twice"); | |
| 366 } | |
| 367 soleInstance = new VM(db, debugger, debugger.getMachineDescription().isBigEndian()); | |
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368 |
| 0 | 369 for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { |
| 370 ((Observer) iter.next()).update(null, null); | |
| 371 } | |
| 650 | 372 |
| 749 | 373 debugger.putHeapConst(soleInstance.getHeapOopSize(), Universe.getNarrowOopBase(), |
| 374 Universe.getNarrowOopShift()); | |
| 0 | 375 } |
| 376 | |
| 377 /** This is used by the debugging system */ | |
| 378 public static void shutdown() { | |
| 379 soleInstance = null; | |
| 380 } | |
| 381 | |
| 382 /** This is used by both the debugger and any runtime system. It is | |
| 383 the basic mechanism by which classes which mimic underlying VM | |
| 384 functionality cause themselves to be initialized. The given | |
| 385 observer will be notified (with arguments (null, null)) when the | |
| 386 VM is re-initialized, as well as when it registers itself with | |
| 387 the VM. */ | |
| 388 public static void registerVMInitializedObserver(Observer o) { | |
| 389 vmInitializedObservers.add(o); | |
| 390 o.update(null, null); | |
| 391 } | |
| 392 | |
| 393 /** This is the primary accessor used by both the debugger and any | |
| 394 potential runtime system */ | |
| 395 public static VM getVM() { | |
| 396 if (soleInstance == null) { | |
| 397 throw new RuntimeException("VM.initialize() was not yet called"); | |
| 398 } | |
| 399 return soleInstance; | |
| 400 } | |
| 401 | |
| 402 /** This is only used by the debugging system. The given observer | |
| 403 will be notified if the underlying VM resumes execution. NOTE | |
| 404 that the given observer is not triggered if the VM is currently | |
| 405 running and therefore differs in behavior from {@link | |
| 406 #registerVMInitializedObserver} (because of the possibility of | |
| 407 race conditions if the observer is added while the VM is being | |
| 408 suspended or resumed). */ | |
| 409 public void registerVMResumedObserver(Observer o) { | |
| 410 vmResumedObservers.add(o); | |
| 411 } | |
| 412 | |
| 413 /** This is only used by the debugging system. The given observer | |
| 414 will be notified if the underlying VM suspends execution. NOTE | |
| 415 that the given observer is not triggered if the VM is currently | |
| 416 suspended and therefore differs in behavior from {@link | |
| 417 #registerVMInitializedObserver} (because of the possibility of | |
| 418 race conditions if the observer is added while the VM is being | |
| 419 suspended or resumed). */ | |
| 420 public void registerVMSuspendedObserver(Observer o) { | |
| 421 vmSuspendedObservers.add(o); | |
| 422 } | |
| 423 | |
| 424 /** This is only used by the debugging system. Informs all | |
| 425 registered resumption observers that the VM has been resumed. | |
| 426 The application is responsible for actually having performed the | |
| 427 resumption. No OopHandles must be used after this point, as they | |
| 428 may move in the target address space due to garbage | |
| 429 collection. */ | |
| 430 public void fireVMResumed() { | |
| 431 for (Iterator iter = vmResumedObservers.iterator(); iter.hasNext(); ) { | |
| 432 ((Observer) iter.next()).update(null, null); | |
| 433 } | |
| 434 } | |
| 435 | |
| 436 /** This is only used by the debugging system. Informs all | |
| 437 registered suspension observers that the VM has been suspended. | |
| 438 The application is responsible for actually having performed the | |
| 439 suspension. Garbage collection must be forbidden at this point; | |
| 440 for example, a JPDA-level suspension is not adequate since the | |
| 441 VM thread may still be running. */ | |
| 442 public void fireVMSuspended() { | |
| 443 for (Iterator iter = vmSuspendedObservers.iterator(); iter.hasNext(); ) { | |
| 444 ((Observer) iter.next()).update(null, null); | |
| 445 } | |
| 446 } | |
| 447 | |
| 448 /** Returns the OS this VM is running on. Notice that by delegating | |
| 449 to the debugger we can transparently support remote | |
| 450 debugging. */ | |
| 451 public String getOS() { | |
| 452 if (debugger != null) { | |
| 453 return debugger.getOS(); | |
| 454 } | |
| 455 return PlatformInfo.getOS(); | |
| 456 } | |
| 457 | |
| 458 /** Returns the CPU this VM is running on. Notice that by delegating | |
| 459 to the debugger we can transparently support remote | |
| 460 debugging. */ | |
| 461 public String getCPU() { | |
| 462 if (debugger != null) { | |
| 463 return debugger.getCPU(); | |
| 464 } | |
| 465 return PlatformInfo.getCPU(); | |
| 466 } | |
| 467 | |
| 468 public Type lookupType(String cTypeName) { | |
| 469 return db.lookupType(cTypeName); | |
| 470 } | |
| 471 | |
| 472 public Integer lookupIntConstant(String name) { | |
| 473 return db.lookupIntConstant(name); | |
| 474 } | |
| 475 | |
| 476 public long getAddressSize() { | |
| 477 return db.getAddressSize(); | |
| 478 } | |
| 479 | |
| 480 public long getOopSize() { | |
|
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481 return oopSize; |
| 0 | 482 } |
| 483 | |
| 484 public long getLogAddressSize() { | |
| 485 return logAddressSize; | |
| 486 } | |
| 487 | |
|
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488 public long getIntSize() { |
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489 return db.getJIntType().getSize(); |
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490 } |
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491 |
| 0 | 492 /** NOTE: this offset is in BYTES in this system! */ |
| 493 public long getStackBias() { | |
| 494 return stackBias; | |
| 495 } | |
| 496 | |
| 497 /** Indicates whether the underlying machine supports the LP64 data | |
| 498 model. This is needed for conditionalizing code in a few places */ | |
| 499 public boolean isLP64() { | |
| 500 if (Assert.ASSERTS_ENABLED) { | |
| 501 Assert.that(isDebugging(), "Debugging system only for now"); | |
| 502 } | |
| 503 return isLP64; | |
| 504 } | |
| 505 | |
| 506 /** Get bytes-per-long == long/double natural alignment. */ | |
| 507 public int getBytesPerLong() { | |
| 508 return bytesPerLong; | |
| 509 } | |
| 510 | |
| 511 /** Get minimum object alignment in bytes. */ | |
| 512 public int getMinObjAlignmentInBytes() { | |
| 513 return minObjAlignmentInBytes; | |
| 514 } | |
|
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515 public int getLogMinObjAlignmentInBytes() { |
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516 return logMinObjAlignmentInBytes; |
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517 } |
| 0 | 518 |
|
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519 public int getHeapWordSize() { |
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520 return heapWordSize; |
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521 } |
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522 |
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523 public int getHeapOopSize() { |
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524 return heapOopSize; |
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525 } |
| 0 | 526 /** Utility routine for getting data structure alignment correct */ |
| 527 public long alignUp(long size, long alignment) { | |
| 528 return (size + alignment - 1) & ~(alignment - 1); | |
| 529 } | |
| 530 | |
| 531 /** Utility routine for getting data structure alignment correct */ | |
| 532 public long alignDown(long size, long alignment) { | |
| 533 return size & ~(alignment - 1); | |
| 534 } | |
| 535 | |
| 536 /** Utility routine for building an int from two "unsigned" 16-bit | |
| 537 shorts */ | |
| 538 public int buildIntFromShorts(short low, short high) { | |
| 539 return (((int) high) << 16) | (((int) low) & 0xFFFF); | |
| 540 } | |
| 541 | |
| 542 /** Utility routine for building a long from two "unsigned" 32-bit | |
| 543 ints in <b>platform-dependent</b> order */ | |
| 544 public long buildLongFromIntsPD(int oneHalf, int otherHalf) { | |
| 545 if (isBigEndian) { | |
| 546 return (((long) otherHalf) << 32) | (((long) oneHalf) & 0x00000000FFFFFFFFL); | |
| 547 } else{ | |
| 548 return (((long) oneHalf) << 32) | (((long) otherHalf) & 0x00000000FFFFFFFFL); | |
| 549 } | |
| 550 } | |
| 551 | |
| 552 /** Indicates whether Thread-Local Allocation Buffers are used */ | |
| 553 public boolean getUseTLAB() { | |
| 554 return useTLAB; | |
| 555 } | |
| 556 | |
| 557 public TypeDataBase getTypeDataBase() { | |
| 558 return db; | |
| 559 } | |
| 560 | |
| 561 public Universe getUniverse() { | |
| 562 if (universe == null) { | |
| 563 universe = new Universe(); | |
| 564 } | |
| 565 return universe; | |
| 566 } | |
| 567 | |
| 568 public ObjectHeap getObjectHeap() { | |
| 569 if (heap == null) { | |
| 570 heap = new ObjectHeap(db); | |
| 571 } | |
| 572 return heap; | |
| 573 } | |
| 574 | |
| 575 public SymbolTable getSymbolTable() { | |
| 576 if (symbols == null) { | |
| 577 symbols = SymbolTable.getTheTable(); | |
| 578 } | |
| 579 return symbols; | |
| 580 } | |
| 581 | |
| 582 public StringTable getStringTable() { | |
| 583 if (strings == null) { | |
| 584 strings = StringTable.getTheTable(); | |
| 585 } | |
| 586 return strings; | |
| 587 } | |
| 588 | |
| 589 public SystemDictionary getSystemDictionary() { | |
| 590 if (dict == null) { | |
| 591 dict = new SystemDictionary(); | |
| 592 } | |
| 593 return dict; | |
| 594 } | |
| 595 | |
| 596 public Threads getThreads() { | |
| 597 if (threads == null) { | |
| 598 threads = new Threads(); | |
| 599 } | |
| 600 return threads; | |
| 601 } | |
| 602 | |
| 603 public ObjectSynchronizer getObjectSynchronizer() { | |
| 604 if (synchronizer == null) { | |
| 605 synchronizer = new ObjectSynchronizer(); | |
| 606 } | |
| 607 return synchronizer; | |
| 608 } | |
| 609 | |
| 610 public JNIHandles getJNIHandles() { | |
| 611 if (handles == null) { | |
| 612 handles = new JNIHandles(); | |
| 613 } | |
| 614 return handles; | |
| 615 } | |
| 616 | |
| 617 public Interpreter getInterpreter() { | |
| 618 if (interpreter == null) { | |
| 619 interpreter = new Interpreter(); | |
| 620 } | |
| 621 return interpreter; | |
| 622 } | |
| 623 | |
| 624 public StubRoutines getStubRoutines() { | |
| 625 if (stubRoutines == null) { | |
| 626 stubRoutines = new StubRoutines(); | |
| 627 } | |
| 628 return stubRoutines; | |
| 629 } | |
| 630 | |
|
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631 public RicochetBlob ricochetBlob() { |
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632 if (ricochetBlob == null) { |
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633 Type ricochetType = db.lookupType("SharedRuntime"); |
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634 AddressField ricochetBlobAddress = ricochetType.getAddressField("_ricochet_blob"); |
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635 Address addr = ricochetBlobAddress.getValue(); |
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636 if (addr != null) { |
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637 ricochetBlob = new RicochetBlob(addr); |
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638 } |
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639 } |
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640 return ricochetBlob; |
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641 } |
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642 |
| 0 | 643 public VMRegImpl getVMRegImplInfo() { |
| 644 if (vmregImpl == null) { | |
| 645 vmregImpl = new VMRegImpl(); | |
| 646 } | |
| 647 return vmregImpl; | |
| 648 } | |
| 649 | |
| 650 public Bytes getBytes() { | |
| 651 if (bytes == null) { | |
| 652 bytes = new Bytes(debugger.getMachineDescription()); | |
| 653 } | |
| 654 return bytes; | |
| 655 } | |
| 656 | |
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657 /** Returns true if this is a isBigEndian, false otherwise */ |
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658 public boolean isBigEndian() { |
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659 return isBigEndian; |
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660 } |
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661 |
| 0 | 662 /** Returns true if this is a "core" build, false if either C1 or C2 |
| 663 is present */ | |
| 664 public boolean isCore() { | |
| 665 return (!(usingClientCompiler || usingServerCompiler)); | |
| 666 } | |
| 667 | |
| 668 /** Returns true if this is a C1 build, false otherwise */ | |
| 669 public boolean isClientCompiler() { | |
| 670 return usingClientCompiler; | |
| 671 } | |
| 672 | |
| 673 /** Returns true if this is a C2 build, false otherwise */ | |
| 674 public boolean isServerCompiler() { | |
| 675 return usingServerCompiler; | |
| 676 } | |
| 677 | |
| 678 /** Returns true if C2 derived pointer table should be used, false otherwise */ | |
| 679 public boolean useDerivedPointerTable() { | |
| 680 return !disableDerivedPrinterTableCheck; | |
| 681 } | |
| 682 | |
| 683 /** Returns the code cache; should not be used if is core build */ | |
| 684 public CodeCache getCodeCache() { | |
| 685 if (Assert.ASSERTS_ENABLED) { | |
| 686 Assert.that(!isCore(), "noncore builds only"); | |
| 687 } | |
| 688 if (codeCache == null) { | |
| 689 codeCache = new CodeCache(); | |
| 690 } | |
| 691 return codeCache; | |
| 692 } | |
| 693 | |
| 694 /** Should only be called for C1 builds */ | |
| 695 public Runtime1 getRuntime1() { | |
| 696 if (Assert.ASSERTS_ENABLED) { | |
| 697 Assert.that(isClientCompiler(), "C1 builds only"); | |
| 698 } | |
| 699 if (runtime1 == null) { | |
| 700 runtime1 = new Runtime1(); | |
| 701 } | |
| 702 return runtime1; | |
| 703 } | |
| 704 | |
| 705 /** Test to see whether we're in debugging mode (NOTE: this really | |
| 706 should not be tested by this code; currently only used in | |
| 707 StackFrameStream) */ | |
| 708 public boolean isDebugging() { | |
| 709 return (debugger != null); | |
| 710 } | |
| 711 | |
| 712 /** This is only used by the debugging (i.e., non-runtime) system */ | |
| 713 public JVMDebugger getDebugger() { | |
| 714 if (debugger == null) { | |
| 715 throw new RuntimeException("Attempt to use debugger in runtime system"); | |
| 716 } | |
| 717 return debugger; | |
| 718 } | |
| 719 | |
| 720 /** Indicates whether a given program counter is in Java code. This | |
| 721 includes but is not spanned by the interpreter and code cache. | |
| 722 Only used in the debugging system, for implementing | |
| 723 JavaThread.currentFrameGuess() on x86. */ | |
| 724 public boolean isJavaPCDbg(Address addr) { | |
| 725 // FIXME: this is not a complete enough set: must include areas | |
| 726 // like vtable stubs | |
| 727 return (getInterpreter().contains(addr) || | |
| 728 getCodeCache().contains(addr)); | |
| 729 } | |
| 730 | |
| 731 /** FIXME: figure out where to stick this */ | |
| 732 public int getInvocationEntryBCI() { | |
| 733 return invocationEntryBCI; | |
| 734 } | |
| 735 | |
| 736 /** FIXME: figure out where to stick this */ | |
| 737 public int getInvalidOSREntryBCI() { | |
| 738 return invalidOSREntryBCI; | |
| 739 } | |
| 740 | |
| 741 // FIXME: figure out where to stick this | |
| 742 public boolean wizardMode() { | |
| 743 return true; | |
| 744 } | |
| 745 | |
| 746 public ReversePtrs getRevPtrs() { | |
| 747 return revPtrs; | |
| 748 } | |
| 749 | |
| 750 public void setRevPtrs(ReversePtrs rp) { | |
| 751 revPtrs = rp; | |
| 752 } | |
| 753 | |
| 754 // returns null, if not available. | |
| 755 public String getVMRelease() { | |
| 756 return vmRelease; | |
| 757 } | |
| 758 | |
| 759 // returns null, if not available. | |
| 760 public String getVMInternalInfo() { | |
| 761 return vmInternalInfo; | |
| 762 } | |
| 763 | |
| 764 public boolean isSharingEnabled() { | |
| 765 if (sharingEnabled == null) { | |
| 766 Flag flag = getCommandLineFlag("UseSharedSpaces"); | |
| 767 sharingEnabled = (flag == null)? Boolean.FALSE : | |
| 768 (flag.getBool()? Boolean.TRUE: Boolean.FALSE); | |
| 769 } | |
| 770 return sharingEnabled.booleanValue(); | |
| 771 } | |
| 772 | |
|
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773 public boolean isCompressedOopsEnabled() { |
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774 if (compressedOopsEnabled == null) { |
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775 Flag flag = getCommandLineFlag("UseCompressedOops"); |
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776 compressedOopsEnabled = (flag == null) ? Boolean.FALSE: |
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777 (flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
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778 } |
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779 return compressedOopsEnabled.booleanValue(); |
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780 } |
| 0 | 781 |
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782 public int getObjectAlignmentInBytes() { |
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783 if (objectAlignmentInBytes == 0) { |
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784 Flag flag = getCommandLineFlag("ObjectAlignmentInBytes"); |
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785 objectAlignmentInBytes = (flag == null) ? 8 : (int)flag.getIntx(); |
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786 } |
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787 return objectAlignmentInBytes; |
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788 } |
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789 |
| 0 | 790 // returns null, if not available. |
| 791 public Flag[] getCommandLineFlags() { | |
| 792 if (commandLineFlags == null) { | |
| 793 readCommandLineFlags(); | |
| 794 } | |
| 795 | |
| 796 return commandLineFlags; | |
| 797 } | |
| 798 | |
| 799 public Flag getCommandLineFlag(String name) { | |
| 800 if (flagsMap == null) { | |
| 801 flagsMap = new HashMap(); | |
| 802 Flag[] flags = getCommandLineFlags(); | |
| 803 for (int i = 0; i < flags.length; i++) { | |
| 804 flagsMap.put(flags[i].getName(), flags[i]); | |
| 805 } | |
| 806 } | |
| 807 return (Flag) flagsMap.get(name); | |
| 808 } | |
| 809 | |
| 810 private void readCommandLineFlags() { | |
| 811 // get command line flags | |
| 812 TypeDataBase db = getTypeDataBase(); | |
| 3939 | 813 Type flagType = db.lookupType("Flag"); |
| 814 int numFlags = (int) flagType.getCIntegerField("numFlags").getValue(); | |
| 815 // NOTE: last flag contains null values. | |
| 816 commandLineFlags = new Flag[numFlags - 1]; | |
| 817 | |
| 818 Address flagAddr = flagType.getAddressField("flags").getValue(); | |
| 0 | 819 |
| 3939 | 820 AddressField typeFld = flagType.getAddressField("type"); |
| 821 AddressField nameFld = flagType.getAddressField("name"); | |
| 822 AddressField addrFld = flagType.getAddressField("addr"); | |
| 823 AddressField kindFld = flagType.getAddressField("kind"); | |
| 824 CIntField originFld = new CIntField(flagType.getCIntegerField("origin"), 0); | |
| 0 | 825 |
| 3939 | 826 long flagSize = flagType.getSize(); // sizeof(Flag) |
| 0 | 827 |
| 3939 | 828 // NOTE: last flag contains null values. |
| 829 for (int f = 0; f < numFlags - 1; f++) { | |
| 830 String type = CStringUtilities.getString(typeFld.getValue(flagAddr)); | |
| 831 String name = CStringUtilities.getString(nameFld.getValue(flagAddr)); | |
| 832 Address addr = addrFld.getValue(flagAddr); | |
| 833 String kind = CStringUtilities.getString(kindFld.getValue(flagAddr)); | |
| 834 int origin = (int)originFld.getValue(flagAddr); | |
| 835 commandLineFlags[f] = new Flag(type, name, addr, kind, origin); | |
| 836 flagAddr = flagAddr.addOffsetTo(flagSize); | |
| 837 } | |
| 0 | 838 |
| 3939 | 839 // sort flags by name |
| 840 Arrays.sort(commandLineFlags, new Comparator() { | |
| 841 public int compare(Object o1, Object o2) { | |
| 842 Flag f1 = (Flag) o1; | |
| 843 Flag f2 = (Flag) o2; | |
| 844 return f1.getName().compareTo(f2.getName()); | |
| 845 } | |
| 846 }); | |
| 0 | 847 } |
| 848 | |
| 849 public String getSystemProperty(String key) { | |
| 850 Properties props = getSystemProperties(); | |
| 851 return (props != null)? props.getProperty(key) : null; | |
| 852 } | |
| 853 | |
| 854 public Properties getSystemProperties() { | |
| 855 if (sysProps == null) { | |
| 856 readSystemProperties(); | |
| 857 } | |
| 858 return sysProps; | |
| 859 } | |
| 860 | |
| 861 private void readSystemProperties() { | |
|
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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862 final InstanceKlass systemKls = getSystemDictionary().getSystemKlass(); |
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863 systemKls.iterateStaticFields(new DefaultOopVisitor() { |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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864 ObjectReader objReader = new ObjectReader(); |
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865 public void doOop(sun.jvm.hotspot.oops.OopField field, boolean isVMField) { |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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866 if (field.getID().getName().equals("props")) { |
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63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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867 try { |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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868 sysProps = (Properties) objReader.readObject(field.getValue(getObj())); |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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869 } catch (Exception e) { |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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870 e.printStackTrace(); |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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871 } |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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872 } |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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873 } |
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7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
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874 }); |
| 0 | 875 } |
| 876 } |