Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/VM.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 | a9fed06c01d2 |
| children | 5a98bf7d847b |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
844
diff
changeset
|
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.*; | |
|
3908
7588156f5cf9
7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents:
2411
diff
changeset
|
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.*; | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
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; | |
|
3908
7588156f5cf9
7051798: SA-JDI: NPE in Frame.addressOfStackSlot(Frame.java:244)
never
parents:
2411
diff
changeset
|
89 |
| 0 | 90 /** Flags indicating whether we are attached to a core, C1, or C2 build */ |
| 91 private boolean usingClientCompiler; | |
| 92 private boolean usingServerCompiler; | |
| 93 /** Flag indicating whether UseTLAB is turned on */ | |
| 94 private boolean useTLAB; | |
|
6641
a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
bpittore
parents:
6266
diff
changeset
|
95 /** Flag indicating whether invokedynamic support is on */ |
|
a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
bpittore
parents:
6266
diff
changeset
|
96 private boolean enableInvokeDynamic; |
| 0 | 97 /** alignment constants */ |
| 98 private boolean isLP64; | |
| 99 private int bytesPerLong; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
100 private int bytesPerWord; |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
101 private int objectAlignmentInBytes; |
| 0 | 102 private int minObjAlignmentInBytes; |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
103 private int logMinObjAlignmentInBytes; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
104 private int heapWordSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
105 private int heapOopSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
106 private int oopSize; |
| 0 | 107 /** This is only present in a non-core build */ |
| 108 private CodeCache codeCache; | |
| 109 /** This is only present in a C1 build */ | |
| 110 private Runtime1 runtime1; | |
| 111 /** These constants come from globalDefinitions.hpp */ | |
| 112 private int invocationEntryBCI; | |
| 113 private int invalidOSREntryBCI; | |
| 114 private ReversePtrs revPtrs; | |
| 115 private VMRegImpl vmregImpl; | |
| 116 | |
| 117 // System.getProperties from debuggee VM | |
| 118 private Properties sysProps; | |
| 119 | |
| 120 // VM version strings come from Abstract_VM_Version class | |
| 121 private String vmRelease; | |
| 122 private String vmInternalInfo; | |
| 123 | |
| 124 private Flag[] commandLineFlags; | |
| 125 private Map flagsMap; | |
| 126 | |
| 127 private static Type intxType; | |
| 128 private static Type uintxType; | |
| 129 private static CIntegerType boolType; | |
| 130 private Boolean sharingEnabled; | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
131 private Boolean compressedOopsEnabled; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
132 private Boolean compressedHeadersEnabled; |
| 0 | 133 |
| 134 // command line flags supplied to VM - see struct Flag in globals.hpp | |
| 135 public static final class Flag { | |
| 136 private String type; | |
| 137 private String name; | |
| 138 private Address addr; | |
| 139 private String kind; | |
| 3939 | 140 private int origin; |
| 0 | 141 |
| 3939 | 142 private Flag(String type, String name, Address addr, String kind, int origin) { |
| 0 | 143 this.type = type; |
| 144 this.name = name; | |
| 145 this.addr = addr; | |
| 146 this.kind = kind; | |
| 3939 | 147 this.origin = origin; |
| 0 | 148 } |
| 149 | |
| 150 public String getType() { | |
| 151 return type; | |
| 152 } | |
| 153 | |
| 154 public String getName() { | |
| 155 return name; | |
| 156 } | |
| 157 | |
| 158 public Address getAddress() { | |
| 159 return addr; | |
| 160 } | |
| 161 | |
| 162 public String getKind() { | |
| 163 return kind; | |
| 164 } | |
| 165 | |
| 3939 | 166 public int getOrigin() { |
| 167 return origin; | |
| 168 } | |
| 169 | |
| 0 | 170 public boolean isBool() { |
| 171 return type.equals("bool"); | |
| 172 } | |
| 173 | |
| 174 public boolean getBool() { | |
| 175 if (Assert.ASSERTS_ENABLED) { | |
| 176 Assert.that(isBool(), "not a bool flag!"); | |
| 177 } | |
| 178 return addr.getCIntegerAt(0, boolType.getSize(), boolType.isUnsigned()) | |
| 179 != 0; | |
| 180 } | |
| 181 | |
| 182 public boolean isIntx() { | |
| 183 return type.equals("intx"); | |
| 184 } | |
| 185 | |
| 186 public long getIntx() { | |
| 187 if (Assert.ASSERTS_ENABLED) { | |
| 188 Assert.that(isIntx(), "not a intx flag!"); | |
| 189 } | |
| 190 return addr.getCIntegerAt(0, intxType.getSize(), false); | |
| 191 } | |
| 192 | |
| 193 public boolean isUIntx() { | |
| 194 return type.equals("uintx"); | |
| 195 } | |
| 196 | |
| 197 public long getUIntx() { | |
| 198 if (Assert.ASSERTS_ENABLED) { | |
| 199 Assert.that(isUIntx(), "not a uintx flag!"); | |
| 200 } | |
| 201 return addr.getCIntegerAt(0, uintxType.getSize(), true); | |
| 202 } | |
| 203 | |
| 204 public String getValue() { | |
| 205 if (isBool()) { | |
| 206 return new Boolean(getBool()).toString(); | |
| 207 } else if (isIntx()) { | |
| 208 return new Long(getIntx()).toString(); | |
| 209 } else if (isUIntx()) { | |
| 210 return new Long(getUIntx()).toString(); | |
| 211 } else { | |
| 212 return null; | |
| 213 } | |
| 214 } | |
| 215 }; | |
| 216 | |
| 217 private static void checkVMVersion(String vmRelease) { | |
| 218 if (System.getProperty("sun.jvm.hotspot.runtime.VM.disableVersionCheck") == null) { | |
| 219 // read sa build version. | |
| 220 String versionProp = "sun.jvm.hotspot.runtime.VM.saBuildVersion"; | |
| 221 String saVersion = saProps.getProperty(versionProp); | |
| 222 if (saVersion == null) | |
| 223 throw new RuntimeException("Missing property " + versionProp); | |
| 224 | |
| 225 // Strip nonproduct VM version substring (note: saVersion doesn't have it). | |
| 226 String vmVersion = vmRelease.replaceAll("(-fastdebug)|(-debug)|(-jvmg)|(-optimized)|(-profiled)",""); | |
| 227 | |
| 228 if (saVersion.equals(vmVersion)) { | |
| 229 // Exact match | |
| 230 return; | |
| 231 } | |
| 232 if (saVersion.indexOf('-') == saVersion.lastIndexOf('-') && | |
| 233 vmVersion.indexOf('-') == vmVersion.lastIndexOf('-')) { | |
| 234 // Throw exception if different release versions: | |
| 235 // <major>.<minor>-b<n> | |
| 236 throw new VMVersionMismatchException(saVersion, vmRelease); | |
| 237 } else { | |
| 238 // Otherwise print warning to allow mismatch not release versions | |
| 239 // during development. | |
| 240 System.err.println("WARNING: Hotspot VM version " + vmRelease + | |
| 241 " does not match with SA version " + saVersion + | |
| 242 "." + " You may see unexpected results. "); | |
| 243 } | |
| 244 } else { | |
| 245 System.err.println("WARNING: You have disabled SA and VM version check. You may be " + | |
| 246 "using incompatible version of SA and you may see unexpected " + | |
| 247 "results."); | |
| 248 } | |
| 249 } | |
| 250 | |
| 251 private static final boolean disableDerivedPrinterTableCheck; | |
| 252 private static final Properties saProps; | |
| 253 | |
| 254 static { | |
| 255 saProps = new Properties(); | |
| 256 URL url = null; | |
| 257 try { | |
| 258 url = VM.class.getClassLoader().getResource("sa.properties"); | |
| 259 saProps.load(new BufferedInputStream(url.openStream())); | |
| 260 } catch (Exception e) { | |
| 261 throw new RuntimeException("Unable to load properties " + | |
| 262 (url == null ? "null" : url.toString()) + | |
| 263 ": " + e.getMessage()); | |
| 264 } | |
| 265 | |
| 266 disableDerivedPrinterTableCheck = System.getProperty("sun.jvm.hotspot.runtime.VM.disableDerivedPointerTableCheck") != null; | |
| 267 } | |
| 268 | |
| 269 private VM(TypeDataBase db, JVMDebugger debugger, boolean isBigEndian) { | |
| 270 this.db = db; | |
| 271 this.debugger = debugger; | |
| 272 this.isBigEndian = isBigEndian; | |
| 273 | |
| 274 // Note that we don't construct universe, heap, threads, | |
| 275 // interpreter, or stubRoutines here (any more). The current | |
| 276 // initialization mechanisms require that the VM be completely set | |
| 277 // up (i.e., out of its constructor, with soleInstance assigned) | |
| 278 // before their static initializers are run. | |
| 279 | |
| 280 if (db.getAddressSize() == 4) { | |
| 281 logAddressSize = 2; | |
| 282 } else if (db.getAddressSize() == 8) { | |
| 283 logAddressSize = 3; | |
| 284 } else { | |
| 285 throw new RuntimeException("Address size " + db.getAddressSize() + " not yet supported"); | |
| 286 } | |
| 287 | |
| 288 // read VM version info | |
| 289 try { | |
| 290 Type vmVersion = db.lookupType("Abstract_VM_Version"); | |
| 291 Address releaseAddr = vmVersion.getAddressField("_s_vm_release").getValue(); | |
| 292 vmRelease = CStringUtilities.getString(releaseAddr); | |
| 293 Address vmInternalInfoAddr = vmVersion.getAddressField("_s_internal_vm_info_string").getValue(); | |
| 294 vmInternalInfo = CStringUtilities.getString(vmInternalInfoAddr); | |
| 295 } catch (Exception exp) { | |
| 296 throw new RuntimeException("can't determine target's VM version : " + exp.getMessage()); | |
| 297 } | |
| 298 | |
| 299 checkVMVersion(vmRelease); | |
| 300 | |
| 301 stackBias = db.lookupIntConstant("STACK_BIAS").intValue(); | |
| 302 invocationEntryBCI = db.lookupIntConstant("InvocationEntryBci").intValue(); | |
| 303 invalidOSREntryBCI = db.lookupIntConstant("InvalidOSREntryBci").intValue(); | |
| 304 | |
| 305 // We infer the presence of C1 or C2 from a couple of fields we | |
| 306 // already have present in the type database | |
| 307 { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
308 Type type = db.lookupType("Method"); |
| 0 | 309 if (type.getField("_from_compiled_entry", false, false) == null) { |
| 310 // Neither C1 nor C2 is present | |
| 311 usingClientCompiler = false; | |
| 312 usingServerCompiler = false; | |
| 313 } else { | |
| 314 // Determine whether C2 is present | |
| 3944 | 315 if (db.lookupType("Matcher", false) != null) { |
| 0 | 316 usingServerCompiler = true; |
| 317 } else { | |
| 318 usingClientCompiler = true; | |
| 319 } | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 useTLAB = (db.lookupIntConstant("UseTLAB").intValue() != 0); | |
|
6641
a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
bpittore
parents:
6266
diff
changeset
|
324 enableInvokeDynamic = (db.lookupIntConstant("EnableInvokeDynamic").intValue() != 0); |
| 0 | 325 |
| 326 if (debugger != null) { | |
| 327 isLP64 = debugger.getMachineDescription().isLP64(); | |
| 328 } | |
| 329 bytesPerLong = db.lookupIntConstant("BytesPerLong").intValue(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
330 bytesPerWord = db.lookupIntConstant("BytesPerWord").intValue(); |
|
1576
4a2e260bb13a
6957882: nsk/sajdi tests failed with NullPointerException
kvn
parents:
1571
diff
changeset
|
331 heapWordSize = db.lookupIntConstant("HeapWordSize").intValue(); |
|
4a2e260bb13a
6957882: nsk/sajdi tests failed with NullPointerException
kvn
parents:
1571
diff
changeset
|
332 oopSize = db.lookupIntConstant("oopSize").intValue(); |
|
4a2e260bb13a
6957882: nsk/sajdi tests failed with NullPointerException
kvn
parents:
1571
diff
changeset
|
333 |
|
4a2e260bb13a
6957882: nsk/sajdi tests failed with NullPointerException
kvn
parents:
1571
diff
changeset
|
334 intxType = db.lookupType("intx"); |
|
4a2e260bb13a
6957882: nsk/sajdi tests failed with NullPointerException
kvn
parents:
1571
diff
changeset
|
335 uintxType = db.lookupType("uintx"); |
|
4a2e260bb13a
6957882: nsk/sajdi tests failed with NullPointerException
kvn
parents:
1571
diff
changeset
|
336 boolType = (CIntegerType) db.lookupType("bool"); |
|
4a2e260bb13a
6957882: nsk/sajdi tests failed with NullPointerException
kvn
parents:
1571
diff
changeset
|
337 |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
338 minObjAlignmentInBytes = getObjectAlignmentInBytes(); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
339 if (minObjAlignmentInBytes == 8) { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
340 logMinObjAlignmentInBytes = 3; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
341 } else if (minObjAlignmentInBytes == 16) { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
342 logMinObjAlignmentInBytes = 4; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
343 } else { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
344 throw new RuntimeException("Object alignment " + minObjAlignmentInBytes + " not yet supported"); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
345 } |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
346 |
| 749 | 347 if (isCompressedOopsEnabled()) { |
| 348 // Size info for oops within java objects is fixed | |
| 349 heapOopSize = (int)getIntSize(); | |
| 350 } else { | |
| 351 heapOopSize = (int)getOopSize(); | |
| 352 } | |
| 0 | 353 } |
| 354 | |
| 355 /** This could be used by a reflective runtime system */ | |
| 356 public static void initialize(TypeDataBase db, boolean isBigEndian) { | |
| 357 if (soleInstance != null) { | |
| 358 throw new RuntimeException("Attempt to initialize VM twice"); | |
| 359 } | |
| 360 soleInstance = new VM(db, null, isBigEndian); | |
| 361 for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { | |
| 362 ((Observer) iter.next()).update(null, null); | |
| 363 } | |
| 364 } | |
| 365 | |
| 366 /** This is used by the debugging system */ | |
| 367 public static void initialize(TypeDataBase db, JVMDebugger debugger) { | |
| 368 if (soleInstance != null) { | |
| 369 throw new RuntimeException("Attempt to initialize VM twice"); | |
| 370 } | |
| 371 soleInstance = new VM(db, debugger, debugger.getMachineDescription().isBigEndian()); | |
|
689
f30ba3b36599
6822407: heapOopSize lookup is incorrect in Serviceability Agent.
poonam
parents:
655
diff
changeset
|
372 |
| 0 | 373 for (Iterator iter = vmInitializedObservers.iterator(); iter.hasNext(); ) { |
| 374 ((Observer) iter.next()).update(null, null); | |
| 375 } | |
| 650 | 376 |
| 749 | 377 debugger.putHeapConst(soleInstance.getHeapOopSize(), Universe.getNarrowOopBase(), |
| 378 Universe.getNarrowOopShift()); | |
| 0 | 379 } |
| 380 | |
| 381 /** This is used by the debugging system */ | |
| 382 public static void shutdown() { | |
| 383 soleInstance = null; | |
| 384 } | |
| 385 | |
| 386 /** This is used by both the debugger and any runtime system. It is | |
| 387 the basic mechanism by which classes which mimic underlying VM | |
| 388 functionality cause themselves to be initialized. The given | |
| 389 observer will be notified (with arguments (null, null)) when the | |
| 390 VM is re-initialized, as well as when it registers itself with | |
| 391 the VM. */ | |
| 392 public static void registerVMInitializedObserver(Observer o) { | |
| 393 vmInitializedObservers.add(o); | |
| 394 o.update(null, null); | |
| 395 } | |
| 396 | |
| 397 /** This is the primary accessor used by both the debugger and any | |
| 398 potential runtime system */ | |
| 399 public static VM getVM() { | |
| 400 if (soleInstance == null) { | |
| 401 throw new RuntimeException("VM.initialize() was not yet called"); | |
| 402 } | |
| 403 return soleInstance; | |
| 404 } | |
| 405 | |
| 406 /** This is only used by the debugging system. The given observer | |
| 407 will be notified if the underlying VM resumes execution. NOTE | |
| 408 that the given observer is not triggered if the VM is currently | |
| 409 running and therefore differs in behavior from {@link | |
| 410 #registerVMInitializedObserver} (because of the possibility of | |
| 411 race conditions if the observer is added while the VM is being | |
| 412 suspended or resumed). */ | |
| 413 public void registerVMResumedObserver(Observer o) { | |
| 414 vmResumedObservers.add(o); | |
| 415 } | |
| 416 | |
| 417 /** This is only used by the debugging system. The given observer | |
| 418 will be notified if the underlying VM suspends execution. NOTE | |
| 419 that the given observer is not triggered if the VM is currently | |
| 420 suspended and therefore differs in behavior from {@link | |
| 421 #registerVMInitializedObserver} (because of the possibility of | |
| 422 race conditions if the observer is added while the VM is being | |
| 423 suspended or resumed). */ | |
| 424 public void registerVMSuspendedObserver(Observer o) { | |
| 425 vmSuspendedObservers.add(o); | |
| 426 } | |
| 427 | |
| 428 /** This is only used by the debugging system. Informs all | |
| 429 registered resumption observers that the VM has been resumed. | |
| 430 The application is responsible for actually having performed the | |
| 431 resumption. No OopHandles must be used after this point, as they | |
| 432 may move in the target address space due to garbage | |
| 433 collection. */ | |
| 434 public void fireVMResumed() { | |
| 435 for (Iterator iter = vmResumedObservers.iterator(); iter.hasNext(); ) { | |
| 436 ((Observer) iter.next()).update(null, null); | |
| 437 } | |
| 438 } | |
| 439 | |
| 440 /** This is only used by the debugging system. Informs all | |
| 441 registered suspension observers that the VM has been suspended. | |
| 442 The application is responsible for actually having performed the | |
| 443 suspension. Garbage collection must be forbidden at this point; | |
| 444 for example, a JPDA-level suspension is not adequate since the | |
| 445 VM thread may still be running. */ | |
| 446 public void fireVMSuspended() { | |
| 447 for (Iterator iter = vmSuspendedObservers.iterator(); iter.hasNext(); ) { | |
| 448 ((Observer) iter.next()).update(null, null); | |
| 449 } | |
| 450 } | |
| 451 | |
| 452 /** Returns the OS this VM is running on. Notice that by delegating | |
| 453 to the debugger we can transparently support remote | |
| 454 debugging. */ | |
| 455 public String getOS() { | |
| 456 if (debugger != null) { | |
| 457 return debugger.getOS(); | |
| 458 } | |
| 459 return PlatformInfo.getOS(); | |
| 460 } | |
| 461 | |
| 462 /** Returns the CPU this VM is running on. Notice that by delegating | |
| 463 to the debugger we can transparently support remote | |
| 464 debugging. */ | |
| 465 public String getCPU() { | |
| 466 if (debugger != null) { | |
| 467 return debugger.getCPU(); | |
| 468 } | |
| 469 return PlatformInfo.getCPU(); | |
| 470 } | |
| 471 | |
| 472 public Type lookupType(String cTypeName) { | |
| 473 return db.lookupType(cTypeName); | |
| 474 } | |
| 475 | |
| 476 public Integer lookupIntConstant(String name) { | |
| 477 return db.lookupIntConstant(name); | |
| 478 } | |
| 479 | |
| 480 public long getAddressSize() { | |
| 481 return db.getAddressSize(); | |
| 482 } | |
| 483 | |
| 484 public long getOopSize() { | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
485 return oopSize; |
| 0 | 486 } |
| 487 | |
| 488 public long getLogAddressSize() { | |
| 489 return logAddressSize; | |
| 490 } | |
| 491 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
492 public long getIntSize() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
493 return db.getJIntType().getSize(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
494 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
495 |
| 0 | 496 /** NOTE: this offset is in BYTES in this system! */ |
| 497 public long getStackBias() { | |
| 498 return stackBias; | |
| 499 } | |
| 500 | |
| 501 /** Indicates whether the underlying machine supports the LP64 data | |
| 502 model. This is needed for conditionalizing code in a few places */ | |
| 503 public boolean isLP64() { | |
| 504 if (Assert.ASSERTS_ENABLED) { | |
| 505 Assert.that(isDebugging(), "Debugging system only for now"); | |
| 506 } | |
| 507 return isLP64; | |
| 508 } | |
| 509 | |
| 510 /** Get bytes-per-long == long/double natural alignment. */ | |
| 511 public int getBytesPerLong() { | |
| 512 return bytesPerLong; | |
| 513 } | |
| 514 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
515 public int getBytesPerWord() { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
516 return bytesPerWord; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
517 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
518 |
| 0 | 519 /** Get minimum object alignment in bytes. */ |
| 520 public int getMinObjAlignmentInBytes() { | |
| 521 return minObjAlignmentInBytes; | |
| 522 } | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
523 public int getLogMinObjAlignmentInBytes() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
524 return logMinObjAlignmentInBytes; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
525 } |
| 0 | 526 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
527 public int getHeapWordSize() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
528 return heapWordSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
529 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
530 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
531 public int getHeapOopSize() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
532 return heapOopSize; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
533 } |
| 0 | 534 /** Utility routine for getting data structure alignment correct */ |
| 535 public long alignUp(long size, long alignment) { | |
| 536 return (size + alignment - 1) & ~(alignment - 1); | |
| 537 } | |
| 538 | |
| 539 /** Utility routine for getting data structure alignment correct */ | |
| 540 public long alignDown(long size, long alignment) { | |
| 541 return size & ~(alignment - 1); | |
| 542 } | |
| 543 | |
| 544 /** Utility routine for building an int from two "unsigned" 16-bit | |
| 545 shorts */ | |
| 546 public int buildIntFromShorts(short low, short high) { | |
| 547 return (((int) high) << 16) | (((int) low) & 0xFFFF); | |
| 548 } | |
| 549 | |
| 550 /** Utility routine for building a long from two "unsigned" 32-bit | |
| 551 ints in <b>platform-dependent</b> order */ | |
| 552 public long buildLongFromIntsPD(int oneHalf, int otherHalf) { | |
| 553 if (isBigEndian) { | |
| 554 return (((long) otherHalf) << 32) | (((long) oneHalf) & 0x00000000FFFFFFFFL); | |
| 555 } else{ | |
| 556 return (((long) oneHalf) << 32) | (((long) otherHalf) & 0x00000000FFFFFFFFL); | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 /** Indicates whether Thread-Local Allocation Buffers are used */ | |
| 561 public boolean getUseTLAB() { | |
| 562 return useTLAB; | |
| 563 } | |
| 564 | |
|
6641
a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
bpittore
parents:
6266
diff
changeset
|
565 public boolean getEnableInvokeDynamic() { |
|
a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
bpittore
parents:
6266
diff
changeset
|
566 return enableInvokeDynamic; |
|
a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
bpittore
parents:
6266
diff
changeset
|
567 } |
|
a9fed06c01d2
7154641: Servicability agent should work on platforms other than x86, sparc
bpittore
parents:
6266
diff
changeset
|
568 |
| 0 | 569 public TypeDataBase getTypeDataBase() { |
| 570 return db; | |
| 571 } | |
| 572 | |
| 573 public Universe getUniverse() { | |
| 574 if (universe == null) { | |
| 575 universe = new Universe(); | |
| 576 } | |
| 577 return universe; | |
| 578 } | |
| 579 | |
| 580 public ObjectHeap getObjectHeap() { | |
| 581 if (heap == null) { | |
| 582 heap = new ObjectHeap(db); | |
| 583 } | |
| 584 return heap; | |
| 585 } | |
| 586 | |
| 587 public SymbolTable getSymbolTable() { | |
| 588 if (symbols == null) { | |
| 589 symbols = SymbolTable.getTheTable(); | |
| 590 } | |
| 591 return symbols; | |
| 592 } | |
| 593 | |
| 594 public StringTable getStringTable() { | |
| 595 if (strings == null) { | |
| 596 strings = StringTable.getTheTable(); | |
| 597 } | |
| 598 return strings; | |
| 599 } | |
| 600 | |
| 601 public SystemDictionary getSystemDictionary() { | |
| 602 if (dict == null) { | |
| 603 dict = new SystemDictionary(); | |
| 604 } | |
| 605 return dict; | |
| 606 } | |
| 607 | |
| 608 public Threads getThreads() { | |
| 609 if (threads == null) { | |
| 610 threads = new Threads(); | |
| 611 } | |
| 612 return threads; | |
| 613 } | |
| 614 | |
| 615 public ObjectSynchronizer getObjectSynchronizer() { | |
| 616 if (synchronizer == null) { | |
| 617 synchronizer = new ObjectSynchronizer(); | |
| 618 } | |
| 619 return synchronizer; | |
| 620 } | |
| 621 | |
| 622 public JNIHandles getJNIHandles() { | |
| 623 if (handles == null) { | |
| 624 handles = new JNIHandles(); | |
| 625 } | |
| 626 return handles; | |
| 627 } | |
| 628 | |
| 629 public Interpreter getInterpreter() { | |
| 630 if (interpreter == null) { | |
| 631 interpreter = new Interpreter(); | |
| 632 } | |
| 633 return interpreter; | |
| 634 } | |
| 635 | |
| 636 public StubRoutines getStubRoutines() { | |
| 637 if (stubRoutines == null) { | |
| 638 stubRoutines = new StubRoutines(); | |
| 639 } | |
| 640 return stubRoutines; | |
| 641 } | |
| 642 | |
| 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 | |
|
331
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
657 /** Returns true if this is a isBigEndian, false otherwise */ |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
658 public boolean isBigEndian() { |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
659 return isBigEndian; |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
660 } |
|
cecd8eb4e0ca
6706829: Compressed Oops: add debug info for narrow oops
kvn
parents:
196
diff
changeset
|
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 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
773 public boolean isCompressedOopsEnabled() { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
774 if (compressedOopsEnabled == null) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
775 Flag flag = getCommandLineFlag("UseCompressedOops"); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
776 compressedOopsEnabled = (flag == null) ? Boolean.FALSE: |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
777 (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
|
778 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
779 return compressedOopsEnabled.booleanValue(); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
780 } |
| 0 | 781 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
782 public boolean isCompressedHeadersEnabled() { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
783 if (compressedHeadersEnabled == null) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
784 Flag flag = getCommandLineFlag("UseCompressedHeaders"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
785 compressedHeadersEnabled = (flag == null) ? Boolean.FALSE: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
786 (flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
787 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
788 return compressedHeadersEnabled.booleanValue(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
789 } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6641
diff
changeset
|
790 |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
791 public int getObjectAlignmentInBytes() { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
792 if (objectAlignmentInBytes == 0) { |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
793 Flag flag = getCommandLineFlag("ObjectAlignmentInBytes"); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
794 objectAlignmentInBytes = (flag == null) ? 8 : (int)flag.getIntx(); |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
795 } |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
796 return objectAlignmentInBytes; |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
797 } |
|
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
844
diff
changeset
|
798 |
| 0 | 799 // returns null, if not available. |
| 800 public Flag[] getCommandLineFlags() { | |
| 801 if (commandLineFlags == null) { | |
| 802 readCommandLineFlags(); | |
| 803 } | |
| 804 | |
| 805 return commandLineFlags; | |
| 806 } | |
| 807 | |
| 808 public Flag getCommandLineFlag(String name) { | |
| 809 if (flagsMap == null) { | |
| 810 flagsMap = new HashMap(); | |
| 811 Flag[] flags = getCommandLineFlags(); | |
| 812 for (int i = 0; i < flags.length; i++) { | |
| 813 flagsMap.put(flags[i].getName(), flags[i]); | |
| 814 } | |
| 815 } | |
| 816 return (Flag) flagsMap.get(name); | |
| 817 } | |
| 818 | |
| 819 private void readCommandLineFlags() { | |
| 820 // get command line flags | |
| 821 TypeDataBase db = getTypeDataBase(); | |
| 3939 | 822 Type flagType = db.lookupType("Flag"); |
| 823 int numFlags = (int) flagType.getCIntegerField("numFlags").getValue(); | |
| 824 // NOTE: last flag contains null values. | |
| 825 commandLineFlags = new Flag[numFlags - 1]; | |
| 826 | |
| 827 Address flagAddr = flagType.getAddressField("flags").getValue(); | |
| 0 | 828 |
| 3939 | 829 AddressField typeFld = flagType.getAddressField("type"); |
| 830 AddressField nameFld = flagType.getAddressField("name"); | |
| 831 AddressField addrFld = flagType.getAddressField("addr"); | |
| 832 AddressField kindFld = flagType.getAddressField("kind"); | |
| 833 CIntField originFld = new CIntField(flagType.getCIntegerField("origin"), 0); | |
| 0 | 834 |
| 3939 | 835 long flagSize = flagType.getSize(); // sizeof(Flag) |
| 0 | 836 |
| 3939 | 837 // NOTE: last flag contains null values. |
| 838 for (int f = 0; f < numFlags - 1; f++) { | |
| 839 String type = CStringUtilities.getString(typeFld.getValue(flagAddr)); | |
| 840 String name = CStringUtilities.getString(nameFld.getValue(flagAddr)); | |
| 841 Address addr = addrFld.getValue(flagAddr); | |
| 842 String kind = CStringUtilities.getString(kindFld.getValue(flagAddr)); | |
| 843 int origin = (int)originFld.getValue(flagAddr); | |
| 844 commandLineFlags[f] = new Flag(type, name, addr, kind, origin); | |
| 845 flagAddr = flagAddr.addOffsetTo(flagSize); | |
| 846 } | |
| 0 | 847 |
| 3939 | 848 // sort flags by name |
| 849 Arrays.sort(commandLineFlags, new Comparator() { | |
| 850 public int compare(Object o1, Object o2) { | |
| 851 Flag f1 = (Flag) o1; | |
| 852 Flag f2 = (Flag) o2; | |
| 853 return f1.getName().compareTo(f2.getName()); | |
| 854 } | |
| 855 }); | |
| 0 | 856 } |
| 857 | |
| 858 public String getSystemProperty(String key) { | |
| 859 Properties props = getSystemProperties(); | |
| 860 return (props != null)? props.getProperty(key) : null; | |
| 861 } | |
| 862 | |
| 863 public Properties getSystemProperties() { | |
| 864 if (sysProps == null) { | |
| 865 readSystemProperties(); | |
| 866 } | |
| 867 return sysProps; | |
| 868 } | |
| 869 | |
| 870 private void readSystemProperties() { | |
|
2411
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
871 final InstanceKlass systemKls = getSystemDictionary().getSystemKlass(); |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
872 systemKls.iterateStaticFields(new DefaultOopVisitor() { |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
873 ObjectReader objReader = new ObjectReader(); |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
874 public void doOop(sun.jvm.hotspot.oops.OopField field, boolean isVMField) { |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
875 if (field.getID().getName().equals("props")) { |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
876 try { |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
877 sysProps = (Properties) objReader.readObject(field.getValue(getObj())); |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
878 } catch (Exception e) { |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
879 e.printStackTrace(); |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
880 } |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
881 } |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
882 } |
|
63997f575155
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
never
parents:
2376
diff
changeset
|
883 }); |
| 0 | 884 } |
| 885 } |