Mercurial > hg > graal-jvmci-8
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 |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | a9fed06c01d2 |
children | 5a98bf7d847b |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.runtime; | |
26 | |
27 import java.io.*; | |
28 import java.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 |
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; | |
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95 /** Flag indicating whether invokedynamic support is on */ |
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96 private boolean enableInvokeDynamic; |
0 | 97 /** alignment constants */ |
98 private boolean isLP64; | |
99 private int bytesPerLong; | |
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100 private int bytesPerWord; |
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101 private int objectAlignmentInBytes; |
0 | 102 private int minObjAlignmentInBytes; |
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103 private int logMinObjAlignmentInBytes; |
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104 private int heapWordSize; |
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105 private int heapOopSize; |
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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
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131 private Boolean compressedOopsEnabled; |
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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 { | |
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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); | |
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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(); | |
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330 bytesPerWord = db.lookupIntConstant("BytesPerWord").intValue(); |
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331 heapWordSize = db.lookupIntConstant("HeapWordSize").intValue(); |
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332 oopSize = db.lookupIntConstant("oopSize").intValue(); |
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333 |
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334 intxType = db.lookupType("intx"); |
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335 uintxType = db.lookupType("uintx"); |
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336 boolType = (CIntegerType) db.lookupType("bool"); |
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337 |
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338 minObjAlignmentInBytes = getObjectAlignmentInBytes(); |
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339 if (minObjAlignmentInBytes == 8) { |
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340 logMinObjAlignmentInBytes = 3; |
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341 } else if (minObjAlignmentInBytes == 16) { |
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342 logMinObjAlignmentInBytes = 4; |
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343 } else { |
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344 throw new RuntimeException("Object alignment " + minObjAlignmentInBytes + " not yet supported"); |
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345 } |
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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()); | |
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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() { | |
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485 return oopSize; |
0 | 486 } |
487 | |
488 public long getLogAddressSize() { | |
489 return logAddressSize; | |
490 } | |
491 | |
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492 public long getIntSize() { |
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493 return db.getJIntType().getSize(); |
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494 } |
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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 | |
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515 public int getBytesPerWord() { |
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516 return bytesPerWord; |
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517 } |
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518 |
0 | 519 /** Get minimum object alignment in bytes. */ |
520 public int getMinObjAlignmentInBytes() { | |
521 return minObjAlignmentInBytes; | |
522 } | |
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523 public int getLogMinObjAlignmentInBytes() { |
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524 return logMinObjAlignmentInBytes; |
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525 } |
0 | 526 |
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527 public int getHeapWordSize() { |
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528 return heapWordSize; |
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529 } |
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530 |
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531 public int getHeapOopSize() { |
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532 return heapOopSize; |
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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 | |
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565 public boolean getEnableInvokeDynamic() { |
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566 return enableInvokeDynamic; |
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567 } |
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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 | |
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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 boolean isCompressedHeadersEnabled() { |
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783 if (compressedHeadersEnabled == null) { |
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784 Flag flag = getCommandLineFlag("UseCompressedHeaders"); |
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785 compressedHeadersEnabled = (flag == null) ? Boolean.FALSE: |
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786 (flag.getBool()? Boolean.TRUE: Boolean.FALSE); |
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787 } |
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788 return compressedHeadersEnabled.booleanValue(); |
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789 } |
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790 |
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791 public int getObjectAlignmentInBytes() { |
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792 if (objectAlignmentInBytes == 0) { |
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793 Flag flag = getCommandLineFlag("ObjectAlignmentInBytes"); |
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794 objectAlignmentInBytes = (flag == null) ? 8 : (int)flag.getIntx(); |
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795 } |
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796 return objectAlignmentInBytes; |
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797 } |
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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() { | |
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871 final InstanceKlass systemKls = getSystemDictionary().getSystemKlass(); |
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872 systemKls.iterateStaticFields(new DefaultOopVisitor() { |
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873 ObjectReader objReader = new ObjectReader(); |
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874 public void doOop(sun.jvm.hotspot.oops.OopField field, boolean isVMField) { |
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875 if (field.getID().getName().equals("props")) { |
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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 } |