Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/VM.java @ 844:bd02caa94611
6862919: Update copyright year
Summary: Update copyright for files that have been modified in 2009, up to 07/09
Reviewed-by: tbell, ohair
| author | xdono |
|---|---|
| date | Tue, 28 Jul 2009 12:12:40 -0700 |
| parents | 81a249214991 |
| children | c18cbe5936b8 2d127394260e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 844 | 2 * Copyright 2000-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 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.*; | |
| 33 import sun.jvm.hotspot.debugger.*; | |
| 34 import sun.jvm.hotspot.interpreter.*; | |
| 35 import sun.jvm.hotspot.memory.*; | |
| 36 import sun.jvm.hotspot.oops.*; | |
| 37 import sun.jvm.hotspot.types.*; | |
| 38 import sun.jvm.hotspot.utilities.*; | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
39 import sun.jvm.hotspot.runtime.*; |
| 0 | 40 |
| 41 /** <P> This class encapsulates the global state of the VM; the | |
| 42 universe, object heap, interpreter, etc. It is a Singleton and | |
| 43 must be initialized with a call to initialize() before calling | |
| 44 getVM(). </P> | |
| 45 | |
| 46 <P> Many auxiliary classes (i.e., most of the VMObjects) keep | |
| 47 needed field offsets in the form of static Field objects. In a | |
| 48 debugging system, the VM might be shutdown and re-initialized (on | |
| 49 a differently-configured build, i.e., 32- vs. 64-bit), and all old | |
| 50 cached state (including fields and field offsets) must be | |
| 51 flushed. </P> | |
| 52 | |
| 53 <P> An Observer pattern is used to implement the initialization of | |
| 54 such classes. Each such class, in its static initializer, | |
| 55 registers an Observer with the VM class via | |
| 56 VM.registerVMInitializedObserver(). This Observer is guaranteed to | |
| 57 be notified whenever the VM is initialized (or re-initialized). To | |
| 58 implement the first-time initialization, the observer is also | |
| 59 notified when it registers itself with the VM. (For bootstrapping | |
| 60 reasons, this implies that the constructor of VM can not | |
| 61 instantiate any such objects, since VM.soleInstance will not have | |
| 62 been set yet. This is a bootstrapping issue which may have to be | |
| 63 revisited later.) </P> | |
| 64 */ | |
| 65 | |
| 66 public class VM { | |
| 67 private static VM soleInstance; | |
| 68 private static List vmInitializedObservers = new ArrayList(); | |
| 69 private List vmResumedObservers = new ArrayList(); | |
| 70 private List vmSuspendedObservers = new ArrayList(); | |
| 71 private TypeDataBase db; | |
| 72 private boolean isBigEndian; | |
| 73 /** This is only present if in a debugging system */ | |
| 74 private JVMDebugger debugger; | |
| 75 private long stackBias; | |
| 76 private long logAddressSize; | |
| 77 private Universe universe; | |
| 78 private ObjectHeap heap; | |
| 79 private SymbolTable symbols; | |
| 80 private StringTable strings; | |
| 81 private SystemDictionary dict; | |
| 82 private Threads threads; | |
| 83 private ObjectSynchronizer synchronizer; | |
| 84 private JNIHandles handles; | |
| 85 private Interpreter interpreter; | |
| 86 private StubRoutines stubRoutines; | |
| 87 private Bytes bytes; | |
| 88 /** Flags indicating whether we are attached to a core, C1, or C2 build */ | |
| 89 private boolean usingClientCompiler; | |
| 90 private boolean usingServerCompiler; | |
| 91 /** Flag indicating whether UseTLAB is turned on */ | |
| 92 private boolean useTLAB; | |
| 93 /** alignment constants */ | |
| 94 private boolean isLP64; | |
| 95 private int bytesPerLong; | |
| 96 private int minObjAlignmentInBytes; | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
97 private int logMinObjAlignmentInBytes; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
98 private int heapWordSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
99 private int heapOopSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
100 private int oopSize; |
| 0 | 101 /** This is only present in a non-core build */ |
| 102 private CodeCache codeCache; | |
| 103 /** This is only present in a C1 build */ | |
| 104 private Runtime1 runtime1; | |
| 105 /** These constants come from globalDefinitions.hpp */ | |
| 106 private int invocationEntryBCI; | |
| 107 private int invalidOSREntryBCI; | |
| 108 private ReversePtrs revPtrs; | |
| 109 private VMRegImpl vmregImpl; | |
| 110 | |
| 111 // System.getProperties from debuggee VM | |
| 112 private Properties sysProps; | |
| 113 | |
| 114 // VM version strings come from Abstract_VM_Version class | |
| 115 private String vmRelease; | |
| 116 private String vmInternalInfo; | |
| 117 | |
| 118 private Flag[] commandLineFlags; | |
| 119 private Map flagsMap; | |
| 120 | |
| 121 private static Type intxType; | |
| 122 private static Type uintxType; | |
| 123 private static CIntegerType boolType; | |
| 124 private Boolean sharingEnabled; | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
125 private Boolean compressedOopsEnabled; |
| 0 | 126 |
| 127 // command line flags supplied to VM - see struct Flag in globals.hpp | |
| 128 public static final class Flag { | |
| 129 private String type; | |
| 130 private String name; | |
| 131 private Address addr; | |
| 132 private String kind; | |
| 133 | |
| 134 private Flag(String type, String name, Address addr, String kind) { | |
| 135 this.type = type; | |
| 136 this.name = name; | |
| 137 this.addr = addr; | |
| 138 this.kind = kind; | |
| 139 } | |
| 140 | |
| 141 public String getType() { | |
| 142 return type; | |
| 143 } | |
| 144 | |
| 145 public String getName() { | |
| 146 return name; | |
| 147 } | |
| 148 | |
| 149 public Address getAddress() { | |
| 150 return addr; | |
| 151 } | |
| 152 | |
| 153 public String getKind() { | |
| 154 return kind; | |
| 155 } | |
| 156 | |
| 157 public boolean isBool() { | |
| 158 return type.equals("bool"); | |
| 159 } | |
| 160 | |
| 161 public boolean getBool() { | |
| 162 if (Assert.ASSERTS_ENABLED) { | |
| 163 Assert.that(isBool(), "not a bool flag!"); | |
| 164 } | |
| 165 return addr.getCIntegerAt(0, boolType.getSize(), boolType.isUnsigned()) | |
| 166 != 0; | |
| 167 } | |
| 168 | |
| 169 public boolean isIntx() { | |
| 170 return type.equals("intx"); | |
| 171 } | |
| 172 | |
| 173 public long getIntx() { | |
| 174 if (Assert.ASSERTS_ENABLED) { | |
| 175 Assert.that(isIntx(), "not a intx flag!"); | |
| 176 } | |
| 177 return addr.getCIntegerAt(0, intxType.getSize(), false); | |
| 178 } | |
| 179 | |
| 180 public boolean isUIntx() { | |
| 181 return type.equals("uintx"); | |
| 182 } | |
| 183 | |
| 184 public long getUIntx() { | |
| 185 if (Assert.ASSERTS_ENABLED) { | |
| 186 Assert.that(isUIntx(), "not a uintx flag!"); | |
| 187 } | |
| 188 return addr.getCIntegerAt(0, uintxType.getSize(), true); | |
| 189 } | |
| 190 | |
| 191 public String getValue() { | |
| 192 if (isBool()) { | |
| 193 return new Boolean(getBool()).toString(); | |
| 194 } else if (isIntx()) { | |
| 195 return new Long(getIntx()).toString(); | |
| 196 } else if (isUIntx()) { | |
| 197 return new Long(getUIntx()).toString(); | |
| 198 } else { | |
| 199 return null; | |
| 200 } | |
| 201 } | |
| 202 }; | |
| 203 | |
| 204 private static void checkVMVersion(String vmRelease) { | |
| 205 if (System.getProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck") == null) { | |
| 206 // read sa build version. | |
| 207 String versionProp = "sun.jvm.hotspot.runtime.VM.saBuildVersion"; | |
| 208 String saVersion = saProps.getProperty(versionProp); | |
| 209 if (saVersion == null) | |
| 210 throw new RuntimeException("Missing property " + versionProp); | |
| 211 | |
| 212 // Strip nonproduct VM version substring (note: saVersion doesn't have it). | |
| 213 String vmVersion = vmRelease.replaceAll("(-fastdebug)|(-debug)|(-jvmg)|(-optimized)|(-profiled)",""); | |
| 214 | |
| 215 if (saVersion.equals(vmVersion)) { | |
| 216 // Exact match | |
| 217 return; | |
| 218 } | |
| 219 if (saVersion.indexOf('-') == saVersion.lastIndexOf('-') && | |
| 220 vmVersion.indexOf('-') == vmVersion.lastIndexOf('-')) { | |
| 221 // Throw exception if different release versions: | |
| 222 // <major>.<minor>-b<n> | |
| 223 throw new VMVersionMismatchException(saVersion, vmRelease); | |
| 224 } else { | |
| 225 // Otherwise print warning to allow mismatch not release versions | |
| 226 // during development. | |
| 227 System.err.println("WARNING: Hotspot VM version " + vmRelease + | |
| 228 " does not match with SA version " + saVersion + | |
| 229 "." + " You may see unexpected results. "); | |
| 230 } | |
| 231 } else { | |
| 232 System.err.println("WARNING: You have disabled SA and VM version check. You may be " + | |
| 233 "using incompatible version of SA and you may see unexpected " + | |
| 234 "results."); | |
| 235 } | |
| 236 } | |
| 237 | |
| 238 private static final boolean disableDerivedPrinterTableCheck; | |
| 239 private static final Properties saProps; | |
| 240 | |
| 241 static { | |
| 242 saProps = new Properties(); | |
| 243 URL url = null; | |
| 244 try { | |
| 245 url = VM.class.getClassLoader().getResource("sa.properties"); | |
| 246 saProps.load(new BufferedInputStream(url.openStream())); | |
| 247 } catch (Exception e) { | |
| 248 throw new RuntimeException("Unable to load properties " + | |
| 249 (url == null ? "null" : url.toString()) + | |
| 250 ": " + e.getMessage()); | |
| 251 } | |
| 252 | |
| 253 disableDerivedPrinterTableCheck = System.getProperty("sun.jvm.hotspot.runtime.VM.disableDerivedPointerTableCheck") != null; | |
| 254 } | |
| 255 | |
| 256 private VM(TypeDataBase db, JVMDebugger debugger, boolean isBigEndian) { | |
| 257 this.db = db; | |
| 258 this.debugger = debugger; | |
| 259 this.isBigEndian = isBigEndian; | |
| 260 | |
| 261 // Note that we don't construct universe, heap, threads, | |
| 262 // interpreter, or stubRoutines here (any more). The current | |
| 263 // initialization mechanisms require that the VM be completely set | |
| 264 // up (i.e., out of its constructor, with soleInstance assigned) | |
| 265 // before their static initializers are run. | |
| 266 | |
| 267 if (db.getAddressSize() == 4) { | |
| 268 logAddressSize = 2; | |
| 269 } else if (db.getAddressSize() == 8) { | |
| 270 logAddressSize = 3; | |
| 271 } else { | |
| 272 throw new RuntimeException("Address size " + db.getAddressSize() + " not yet supported"); | |
| 273 } | |
| 274 | |
| 275 // read VM version info | |
| 276 try { | |
| 277 Type vmVersion = db.lookupType("Abstract_VM_Version"); | |
| 278 Address releaseAddr = vmVersion.getAddressField("_s_vm_release").getValue(); | |
| 279 vmRelease = CStringUtilities.getString(releaseAddr); | |
| 280 Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue(); | |
| 281 vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr); | |
| 282 } catch (Exception exp) { | |
| 283 throw new RuntimeException("can't determine target's VM version : " + exp.getMessage()); | |
| 284 } | |
| 285 | |
| 286 checkVMVersion(vmRelease); | |
| 287 | |
| 288 stackBias = db.lookupIntConstant("STACK_BIAS").intValue(); | |
| 289 invocationEntryBCI = db.lookupIntConstant("InvocationEntryBci").intValue(); | |
| 290 invalidOSREntryBCI = db.lookupIntConstant("InvalidOSREntryBci").intValue(); | |
| 291 | |
| 292 // We infer the presence of C1 or C2 from a couple of fields we | |
| 293 // already have present in the type database | |
| 294 { | |
| 295 Type type = db.lookupType("methodOopDesc"); | |
| 296 if (type.getField("_from_compiled_entry", false, false) == null) { | |
| 297 // Neither C1 nor C2 is present | |
| 298 usingClientCompiler = false; | |
| 299 usingServerCompiler = false; | |
| 300 } else { | |
| 301 // Determine whether C2 is present | |
| 302 if (type.getField("_interpreter_invocation_count", false, false) != null) { | |
| 303 usingServerCompiler = true; | |
| 304 } else { | |
| 305 usingClientCompiler = true; | |
| 306 } | |
| 307 } | |
| 308 } | |
| 309 | |
| 310 useTLAB = (db.lookupIntConstant("UseTLAB").intValue() != 0); | |
| 311 | |
| 312 if (debugger != null) { | |
| 313 isLP64 = debugger.getMachineDescription().isLP64(); | |
| 314 } | |
| 315 bytesPerLong = db.lookupIntConstant("BytesPerLong").intValue(); | |
| 316 minObjAlignmentInBytes = db.lookupIntConstant("MinObjAlignmentInBytes").intValue(); | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
317 // minObjAlignment = db.lookupIntConstant("MinObjAlignment").intValue(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
318 logMinObjAlignmentInBytes = db.lookupIntConstant("LogMinObjAlignmentInBytes").intValue(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
319 heapWordSize = db.lookupIntConstant("HeapWordSize").intValue(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
320 oopSize = db.lookupIntConstant("oopSize").intValue(); |
| 0 | 321 |
| 322 intxType = db.lookupType("intx"); | |
| 323 uintxType = db.lookupType("uintx"); | |
| 324 boolType = (CIntegerType) db.lookupType("bool"); | |
| 749 | 325 |
| 326 if (isCompressedOopsEnabled()) { | |
| 327 // Size info for oops within java objects is fixed | |
| 328 heapOopSize = (int)getIntSize(); | |
| 329 } else { | |
| 330 heapOopSize = (int)getOopSize(); | |
| 331 } | |
| 0 | 332 } |
| 333 | |
| 334 /** This could be used by a reflective runtime system */ | |
| 335 public static void initialize(TypeDataBase db, boolean isBigEndian) { | |
| 336 if (soleInstance != null) { | |
| 337 throw new RuntimeException("Attempt to initialize VM twice"); | |
| 338 } | |
| 339 soleInstance = new VM(db, null, isBigEndian); | |
| 340 for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { | |
| 341 ((Observer) iter.next()).update(null, null); | |
| 342 } | |
| 343 } | |
| 344 | |
| 345 /** This is used by the debugging system */ | |
| 346 public static void initialize(TypeDataBase db, JVMDebugger debugger) { | |
| 347 if (soleInstance != null) { | |
| 348 throw new RuntimeException("Attempt to initialize VM twice"); | |
| 349 } | |
| 350 soleInstance = new VM(db, debugger, debugger.getMachineDescription().isBigEndian()); | |
|
689
f30ba3b36599
6822407: heapOopSize lookup is incorrect in Serviceability Agent.
poonam
parents:
655
diff
changeset
|
351 |
| 0 | 352 for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { |
| 353 ((Observer) iter.next()).update(null, null); | |
| 354 } | |
| 650 | 355 |
| 749 | 356 debugger.putHeapConst(soleInstance.getHeapOopSize(), Universe.getNarrowOopBase(), |
| 357 Universe.getNarrowOopShift()); | |
| 0 | 358 } |
| 359 | |
| 360 /** This is used by the debugging system */ | |
| 361 public static void shutdown() { | |
| 362 soleInstance = null; | |
| 363 } | |
| 364 | |
| 365 /** This is used by both the debugger and any runtime system. It is | |
| 366 the basic mechanism by which classes which mimic underlying VM | |
| 367 functionality cause themselves to be initialized. The given | |
| 368 observer will be notified (with arguments (null, null)) when the | |
| 369 VM is re-initialized, as well as when it registers itself with | |
| 370 the VM. */ | |
| 371 public static void registerVMInitializedObserver(Observer o) { | |
| 372 vmInitializedObservers.add(o); | |
| 373 o.update(null, null); | |
| 374 } | |
| 375 | |
| 376 /** This is the primary accessor used by both the debugger and any | |
| 377 potential runtime system */ | |
| 378 public static VM getVM() { | |
| 379 if (soleInstance == null) { | |
| 380 throw new RuntimeException("VM.initialize() was not yet called"); | |
| 381 } | |
| 382 return soleInstance; | |
| 383 } | |
| 384 | |
| 385 /** This is only used by the debugging system. The given observer | |
| 386 will be notified if the underlying VM resumes execution. NOTE | |
| 387 that the given observer is not triggered if the VM is currently | |
| 388 running and therefore differs in behavior from {@link | |
| 389 #registerVMInitializedObserver} (because of the possibility of | |
| 390 race conditions if the observer is added while the VM is being | |
| 391 suspended or resumed). */ | |
| 392 public void registerVMResumedObserver(Observer o) { | |
| 393 vmResumedObservers.add(o); | |
| 394 } | |
| 395 | |
| 396 /** This is only used by the debugging system. The given observer | |
| 397 will be notified if the underlying VM suspends execution. NOTE | |
| 398 that the given observer is not triggered if the VM is currently | |
| 399 suspended and therefore differs in behavior from {@link | |
| 400 #registerVMInitializedObserver} (because of the possibility of | |
| 401 race conditions if the observer is added while the VM is being | |
| 402 suspended or resumed). */ | |
| 403 public void registerVMSuspendedObserver(Observer o) { | |
| 404 vmSuspendedObservers.add(o); | |
| 405 } | |
| 406 | |
| 407 /** This is only used by the debugging system. Informs all | |
| 408 registered resumption observers that the VM has been resumed. | |
| 409 The application is responsible for actually having performed the | |
| 410 resumption. No OopHandles must be used after this point, as they | |
| 411 may move in the target address space due to garbage | |
| 412 collection. */ | |
| 413 public void fireVMResumed() { | |
| 414 for (Iterator iter = vmResumedObservers.iterator(); iter.hasNext(); ) { | |
| 415 ((Observer) iter.next()).update(null, null); | |
| 416 } | |
| 417 } | |
| 418 | |
| 419 /** This is only used by the debugging system. Informs all | |
| 420 registered suspension observers that the VM has been suspended. | |
| 421 The application is responsible for actually having performed the | |
| 422 suspension. Garbage collection must be forbidden at this point; | |
| 423 for example, a JPDA-level suspension is not adequate since the | |
| 424 VM thread may still be running. */ | |
| 425 public void fireVMSuspended() { | |
| 426 for (Iterator iter = vmSuspendedObservers.iterator(); iter.hasNext(); ) { | |
| 427 ((Observer) iter.next()).update(null, null); | |
| 428 } | |
| 429 } | |
| 430 | |
| 431 /** Returns the OS this VM is running on. Notice that by delegating | |
| 432 to the debugger we can transparently support remote | |
| 433 debugging. */ | |
| 434 public String getOS() { | |
| 435 if (debugger != null) { | |
| 436 return debugger.getOS(); | |
| 437 } | |
| 438 return PlatformInfo.getOS(); | |
| 439 } | |
| 440 | |
| 441 /** Returns the CPU this VM is running on. Notice that by delegating | |
| 442 to the debugger we can transparently support remote | |
| 443 debugging. */ | |
| 444 public String getCPU() { | |
| 445 if (debugger != null) { | |
| 446 return debugger.getCPU(); | |
| 447 } | |
| 448 return PlatformInfo.getCPU(); | |
| 449 } | |
| 450 | |
| 451 public Type lookupType(String cTypeName) { | |
| 452 return db.lookupType(cTypeName); | |
| 453 } | |
| 454 | |
| 455 public Integer lookupIntConstant(String name) { | |
| 456 return db.lookupIntConstant(name); | |
| 457 } | |
| 458 | |
| 459 public long getAddressSize() { | |
| 460 return db.getAddressSize(); | |
| 461 } | |
| 462 | |
| 463 public long getOopSize() { | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
464 return oopSize; |
| 0 | 465 } |
| 466 | |
| 467 public long getLogAddressSize() { | |
| 468 return logAddressSize; | |
| 469 } | |
| 470 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
471 public long getIntSize() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
472 return db.getJIntType().getSize(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
473 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
474 |
| 0 | 475 /** NOTE: this offset is in BYTES in this system! */ |
| 476 public long getStackBias() { | |
| 477 return stackBias; | |
| 478 } | |
| 479 | |
| 480 /** Indicates whether the underlying machine supports the LP64 data | |
| 481 model. This is needed for conditionalizing code in a few places */ | |
| 482 public boolean isLP64() { | |
| 483 if (Assert.ASSERTS_ENABLED) { | |
| 484 Assert.that(isDebugging(), "Debugging system only for now"); | |
| 485 } | |
| 486 return isLP64; | |
| 487 } | |
| 488 | |
| 489 /** Get bytes-per-long == long/double natural alignment. */ | |
| 490 public int getBytesPerLong() { | |
| 491 return bytesPerLong; | |
| 492 } | |
| 493 | |
| 494 /** Get minimum object alignment in bytes. */ | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
495 public int getMinObjAlignment() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
496 return minObjAlignmentInBytes; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
497 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
498 |
| 0 | 499 public int getMinObjAlignmentInBytes() { |
| 500 return minObjAlignmentInBytes; | |
| 501 } | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
502 public int getLogMinObjAlignmentInBytes() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
503 return logMinObjAlignmentInBytes; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
504 } |
| 0 | 505 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
506 public int getHeapWordSize() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
507 return heapWordSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
508 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
509 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
510 public int getHeapOopSize() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
511 return heapOopSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
512 } |
| 0 | 513 /** Utility routine for getting data structure alignment correct */ |
| 514 public long alignUp(long size, long alignment) { | |
| 515 return (size + alignment - 1) & ~(alignment - 1); | |
| 516 } | |
| 517 | |
| 518 /** Utility routine for getting data structure alignment correct */ | |
| 519 public long alignDown(long size, long alignment) { | |
| 520 return size & ~(alignment - 1); | |
| 521 } | |
| 522 | |
| 523 /** Utility routine for building an int from two "unsigned" 16-bit | |
| 524 shorts */ | |
| 525 public int buildIntFromShorts(short low, short high) { | |
| 526 return (((int) high) << 16) | (((int) low) & 0xFFFF); | |
| 527 } | |
| 528 | |
| 529 /** Utility routine for building a long from two "unsigned" 32-bit | |
| 530 ints in <b>platform-dependent</b> order */ | |
| 531 public long buildLongFromIntsPD(int oneHalf, int otherHalf) { | |
| 532 if (isBigEndian) { | |
| 533 return (((long) otherHalf) << 32) | (((long) oneHalf) & 0x00000000FFFFFFFFL); | |
| 534 } else{ | |
| 535 return (((long) oneHalf) << 32) | (((long) otherHalf) & 0x00000000FFFFFFFFL); | |
| 536 } | |
| 537 } | |
| 538 | |
| 539 /** Indicates whether Thread-Local Allocation Buffers are used */ | |
| 540 public boolean getUseTLAB() { | |
| 541 return useTLAB; | |
| 542 } | |
| 543 | |
| 544 public TypeDataBase getTypeDataBase() { | |
| 545 return db; | |
| 546 } | |
| 547 | |
| 548 public Universe getUniverse() { | |
| 549 if (universe == null) { | |
| 550 universe = new Universe(); | |
| 551 } | |
| 552 return universe; | |
| 553 } | |
| 554 | |
| 555 public ObjectHeap getObjectHeap() { | |
| 556 if (heap == null) { | |
| 557 heap = new ObjectHeap(db); | |
| 558 } | |
| 559 return heap; | |
| 560 } | |
| 561 | |
| 562 public SymbolTable getSymbolTable() { | |
| 563 if (symbols == null) { | |
| 564 symbols = SymbolTable.getTheTable(); | |
| 565 } | |
| 566 return symbols; | |
| 567 } | |
| 568 | |
| 569 public StringTable getStringTable() { | |
| 570 if (strings == null) { | |
| 571 strings = StringTable.getTheTable(); | |
| 572 } | |
| 573 return strings; | |
| 574 } | |
| 575 | |
| 576 public SystemDictionary getSystemDictionary() { | |
| 577 if (dict == null) { | |
| 578 dict = new SystemDictionary(); | |
| 579 } | |
| 580 return dict; | |
| 581 } | |
| 582 | |
| 583 public Threads getThreads() { | |
| 584 if (threads == null) { | |
| 585 threads = new Threads(); | |
| 586 } | |
| 587 return threads; | |
| 588 } | |
| 589 | |
| 590 public ObjectSynchronizer getObjectSynchronizer() { | |
| 591 if (synchronizer == null) { | |
| 592 synchronizer = new ObjectSynchronizer(); | |
| 593 } | |
| 594 return synchronizer; | |
| 595 } | |
| 596 | |
| 597 public JNIHandles getJNIHandles() { | |
| 598 if (handles == null) { | |
| 599 handles = new JNIHandles(); | |
| 600 } | |
| 601 return handles; | |
| 602 } | |
| 603 | |
| 604 public Interpreter getInterpreter() { | |
| 605 if (interpreter == null) { | |
| 606 interpreter = new Interpreter(); | |
| 607 } | |
| 608 return interpreter; | |
| 609 } | |
| 610 | |
| 611 public StubRoutines getStubRoutines() { | |
| 612 if (stubRoutines == null) { | |
| 613 stubRoutines = new StubRoutines(); | |
| 614 } | |
| 615 return stubRoutines; | |
| 616 } | |
| 617 | |
| 618 public VMRegImpl getVMRegImplInfo() { | |
| 619 if (vmregImpl == null) { | |
| 620 vmregImpl = new VMRegImpl(); | |
| 621 } | |
| 622 return vmregImpl; | |
| 623 } | |
| 624 | |
| 625 public Bytes getBytes() { | |
| 626 if (bytes == null) { | |
| 627 bytes = new Bytes(debugger.getMachineDescription()); | |
| 628 } | |
| 629 return bytes; | |
| 630 } | |
| 631 | |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
632 /** Returns true if this is a isBigEndian, false otherwise */ |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
633 public boolean isBigEndian() { |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
634 return isBigEndian; |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
635 } |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
636 |
| 0 | 637 /** Returns true if this is a "core" build, false if either C1 or C2 |
| 638 is present */ | |
| 639 public boolean isCore() { | |
| 640 return (!(usingClientCompiler || usingServerCompiler)); | |
| 641 } | |
| 642 | |
| 643 /** Returns true if this is a C1 build, false otherwise */ | |
| 644 public boolean isClientCompiler() { | |
| 645 return usingClientCompiler; | |
| 646 } | |
| 647 | |
| 648 /** Returns true if this is a C2 build, false otherwise */ | |
| 649 public boolean isServerCompiler() { | |
| 650 return usingServerCompiler; | |
| 651 } | |
| 652 | |
| 653 /** Returns true if C2 derived pointer table should be used, false otherwise */ | |
| 654 public boolean useDerivedPointerTable() { | |
| 655 return !disableDerivedPrinterTableCheck; | |
| 656 } | |
| 657 | |
| 658 /** Returns the code cache; should not be used if is core build */ | |
| 659 public CodeCache getCodeCache() { | |
| 660 if (Assert.ASSERTS_ENABLED) { | |
| 661 Assert.that(!isCore(), "noncore builds only"); | |
| 662 } | |
| 663 if (codeCache == null) { | |
| 664 codeCache = new CodeCache(); | |
| 665 } | |
| 666 return codeCache; | |
| 667 } | |
| 668 | |
| 669 /** Should only be called for C1 builds */ | |
| 670 public Runtime1 getRuntime1() { | |
| 671 if (Assert.ASSERTS_ENABLED) { | |
| 672 Assert.that(isClientCompiler(), "C1 builds only"); | |
| 673 } | |
| 674 if (runtime1 == null) { | |
| 675 runtime1 = new Runtime1(); | |
| 676 } | |
| 677 return runtime1; | |
| 678 } | |
| 679 | |
| 680 /** Test to see whether we're in debugging mode (NOTE: this really | |
| 681 should not be tested by this code; currently only used in | |
| 682 StackFrameStream) */ | |
| 683 public boolean isDebugging() { | |
| 684 return (debugger != null); | |
| 685 } | |
| 686 | |
| 687 /** This is only used by the debugging (i.e., non-runtime) system */ | |
| 688 public JVMDebugger getDebugger() { | |
| 689 if (debugger == null) { | |
| 690 throw new RuntimeException("Attempt to use debugger in runtime system"); | |
| 691 } | |
| 692 return debugger; | |
| 693 } | |
| 694 | |
| 695 /** Indicates whether a given program counter is in Java code. This | |
| 696 includes but is not spanned by the interpreter and code cache. | |
| 697 Only used in the debugging system, for implementing | |
| 698 JavaThread.currentFrameGuess() on x86. */ | |
| 699 public boolean isJavaPCDbg(Address addr) { | |
| 700 // FIXME: this is not a complete enough set: must include areas | |
| 701 // like vtable stubs | |
| 702 return (getInterpreter().contains(addr) || | |
| 703 getCodeCache().contains(addr)); | |
| 704 } | |
| 705 | |
| 706 /** FIXME: figure out where to stick this */ | |
| 707 public int getInvocationEntryBCI() { | |
| 708 return invocationEntryBCI; | |
| 709 } | |
| 710 | |
| 711 /** FIXME: figure out where to stick this */ | |
| 712 public int getInvalidOSREntryBCI() { | |
| 713 return invalidOSREntryBCI; | |
| 714 } | |
| 715 | |
| 716 // FIXME: figure out where to stick this | |
| 717 public boolean wizardMode() { | |
| 718 return true; | |
| 719 } | |
| 720 | |
| 721 public ReversePtrs getRevPtrs() { | |
| 722 return revPtrs; | |
| 723 } | |
| 724 | |
| 725 public void setRevPtrs(ReversePtrs rp) { | |
| 726 revPtrs = rp; | |
| 727 } | |
| 728 | |
| 729 // returns null, if not available. | |
| 730 public String getVMRelease() { | |
| 731 return vmRelease; | |
| 732 } | |
| 733 | |
| 734 // returns null, if not available. | |
| 735 public String getVMInternalInfo() { | |
| 736 return vmInternalInfo; | |
| 737 } | |
| 738 | |
| 739 public boolean isSharingEnabled() { | |
| 740 if (sharingEnabled == null) { | |
| 741 Flag flag = getCommandLineFlag("UseSharedSpaces"); | |
| 742 sharingEnabled = (flag == null)? Boolean.FALSE : | |
| 743 (flag.getBool()? Boolean.TRUE: Boolean.FALSE); | |
| 744 } | |
| 745 return sharingEnabled.booleanValue(); | |
| 746 } | |
| 747 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
748 public boolean isCompressedOopsEnabled() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
749 if (compressedOopsEnabled == null) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
750 Flag flag = getCommandLineFlag("UseCompressedOops"); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
751 compressedOopsEnabled = (flag == null) ? Boolean.FALSE: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
752 (flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
753 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
754 return compressedOopsEnabled.booleanValue(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
755 } |
| 0 | 756 |
| 757 // returns null, if not available. | |
| 758 public Flag[] getCommandLineFlags() { | |
| 759 if (commandLineFlags == null) { | |
| 760 readCommandLineFlags(); | |
| 761 } | |
| 762 | |
| 763 return commandLineFlags; | |
| 764 } | |
| 765 | |
| 766 public Flag getCommandLineFlag(String name) { | |
| 767 if (flagsMap == null) { | |
| 768 flagsMap = new HashMap(); | |
| 769 Flag[] flags = getCommandLineFlags(); | |
| 770 for (int i = 0; i < flags.length; i++) { | |
| 771 flagsMap.put(flags[i].getName(), flags[i]); | |
| 772 } | |
| 773 } | |
| 774 return (Flag) flagsMap.get(name); | |
| 775 } | |
| 776 | |
| 777 private void readCommandLineFlags() { | |
| 778 // get command line flags | |
| 779 TypeDataBase db = getTypeDataBase(); | |
| 780 try { | |
| 781 Type flagType = db.lookupType("Flag"); | |
| 782 int numFlags = (int) flagType.getCIntegerField("numFlags").getValue(); | |
| 783 // NOTE: last flag contains null values. | |
| 784 commandLineFlags = new Flag[numFlags - 1]; | |
| 785 | |
| 786 Address flagAddr = flagType.getAddressField("flags").getValue(); | |
| 787 | |
| 788 AddressField typeFld = flagType.getAddressField("type"); | |
| 789 AddressField nameFld = flagType.getAddressField("name"); | |
| 790 AddressField addrFld = flagType.getAddressField("addr"); | |
| 791 AddressField kindFld = flagType.getAddressField("kind"); | |
| 792 | |
| 793 long flagSize = flagType.getSize(); // sizeof(Flag) | |
| 794 | |
| 795 // NOTE: last flag contains null values. | |
| 796 for (int f = 0; f < numFlags - 1; f++) { | |
| 797 String type = CStringUtilities.getString(typeFld.getValue(flagAddr)); | |
| 798 String name = CStringUtilities.getString(nameFld.getValue(flagAddr)); | |
| 799 Address addr = addrFld.getValue(flagAddr); | |
| 800 String kind = CStringUtilities.getString(kindFld.getValue(flagAddr)); | |
| 801 commandLineFlags[f] = new Flag(type, name, addr, kind); | |
| 802 flagAddr = flagAddr.addOffsetTo(flagSize); | |
| 803 } | |
| 804 | |
| 805 // sort flags by name | |
| 806 Arrays.sort(commandLineFlags, new Comparator() { | |
| 807 public int compare(Object o1, Object o2) { | |
| 808 Flag f1 = (Flag) o1; | |
| 809 Flag f2 = (Flag) o2; | |
| 810 return f1.getName().compareTo(f2.getName()); | |
| 811 } | |
| 812 }); | |
| 813 } catch (Exception exp) { | |
| 814 // ignore. may be older version. command line flags not available. | |
| 815 } | |
| 816 } | |
| 817 | |
| 818 public String getSystemProperty(String key) { | |
| 819 Properties props = getSystemProperties(); | |
| 820 return (props != null)? props.getProperty(key) : null; | |
| 821 } | |
| 822 | |
| 823 public Properties getSystemProperties() { | |
| 824 if (sysProps == null) { | |
| 825 readSystemProperties(); | |
| 826 } | |
| 827 return sysProps; | |
| 828 } | |
| 829 | |
| 830 private void readSystemProperties() { | |
| 831 InstanceKlass systemKls = getSystemDictionary().getSystemKlass(); | |
| 832 systemKls.iterate(new DefaultOopVisitor() { | |
| 833 ObjectReader objReader = new ObjectReader(); | |
| 834 public void doOop(sun.jvm.hotspot.oops.OopField field, boolean isVMField) { | |
| 835 if (field.getID().getName().equals("props")) { | |
| 836 try { | |
| 837 sysProps = (Properties) objReader.readObject(field.getValue(getObj())); | |
| 838 } catch (Exception e) { | |
| 839 if (Assert.ASSERTS_ENABLED) { | |
| 840 e.printStackTrace(); | |
| 841 } | |
| 842 } | |
| 843 } | |
| 844 } | |
| 845 }, false); | |
| 846 } | |
| 847 } |