Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 12481:45daf0d65522
Replace EliminatePartiallyRedundantGuardsPhase with OptimizeGuardAnchors
* OptimizeGuardAnchors implements optimization at control split in a more efficient way
* OptimizeGuardAnchors ensure Guards have their optimal anchor point
***
OptimizeGuardAnchors header
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 17 Oct 2013 18:18:05 +0200 |
parents | cefad50507d8 |
children | 096c224171c4 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
80 # include "jvm_bsd.h" | |
81 #endif | |
1972 | 82 |
0 | 83 #include <errno.h> |
84 | |
4006 | 85 #ifndef USDT2 |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 89 #endif /* !USDT2 */ |
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90 |
0 | 91 /* |
92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
94 usage because if objects are move this may cause various memory stomps, bus | |
95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
96 failures": | |
97 | |
98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
100 | |
101 // Object address to be held directly in mirror & not visible to GC | |
102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
103 | |
104 // If this ctor can hit a safepoint, moving objects around, then | |
105 ComplexConstructor foo; | |
106 | |
107 // Boom! mirror may point to JUNK instead of the intended object | |
108 (some dereference of mirror) | |
109 | |
110 // Here's another call that may block for GC, making mirror stale | |
111 MutexLocker ml(some_lock); | |
112 | |
113 // And here's an initializer that can result in a stale oop | |
114 // all in one step. | |
115 oop o = call_that_can_throw_exception(TRAPS); | |
116 | |
117 | |
118 The solution is to keep the oop declaration BELOW the ctor or function | |
119 call that might cause a GC, do another resolve to reassign the oop, or | |
120 consider use of a Handle instead of an oop so there is immunity from object | |
121 motion. But note that the "QUICK" entries below do not have a handlemark | |
122 and thus can only support use of handles passed in. | |
123 */ | |
124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 126 ResourceMark rm; |
127 int line_number = -1; | |
128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
0 | 131 JavaThread* jthread = JavaThread::current(); |
132 if (jthread->has_last_Java_frame()) { | |
133 vframeStream vfst(jthread); | |
134 | |
135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
0 | 142 |
143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 148 break; |
149 } | |
150 last_caller = m; | |
151 vfst.next(); | |
152 } | |
153 // if this is called from Class.forName0 and that is called from Class.forName, | |
154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
156 bool found_it = false; | |
157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
160 vfst.next(); | |
161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 163 vfst.method()->name() == vmSymbols::forName_name()) { |
164 vfst.next(); | |
165 found_it = true; | |
166 } | |
167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
0 | 169 vmSymbols::java_lang_ClassLoader() && |
170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
171 last_caller->name() == vmSymbols::loadClass_name())) { | |
172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
0 | 178 } |
179 if (found_it && !vfst.at_end()) { | |
180 // found the caller | |
181 caller = vfst.method()->method_holder(); | |
182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
0 | 188 if (s != NULL) { |
189 source_file = s->as_C_string(); | |
190 } | |
191 } | |
192 } | |
193 if (caller != NULL) { | |
194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
0 | 197 // print in a single call to reduce interleaving between threads |
198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 202 } |
203 } | |
204 } | |
205 } | |
206 | |
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207 void trace_class_resolution(Klass* to_class) { |
0 | 208 EXCEPTION_MARK; |
209 trace_class_resolution_impl(to_class, THREAD); | |
210 if (HAS_PENDING_EXCEPTION) { | |
211 CLEAR_PENDING_EXCEPTION; | |
212 } | |
213 } | |
214 | |
215 // Wrapper to trace JVM functions | |
216 | |
217 #ifdef ASSERT | |
218 class JVMTraceWrapper : public StackObj { | |
219 public: | |
220 JVMTraceWrapper(const char* format, ...) { | |
221 if (TraceJVMCalls) { | |
222 va_list ap; | |
223 va_start(ap, format); | |
224 tty->print("JVM "); | |
225 tty->vprint_cr(format, ap); | |
226 va_end(ap); | |
227 } | |
228 } | |
229 }; | |
230 | |
231 Histogram* JVMHistogram; | |
232 volatile jint JVMHistogram_lock = 0; | |
233 | |
234 class JVMHistogramElement : public HistogramElement { | |
235 public: | |
236 JVMHistogramElement(const char* name); | |
237 }; | |
238 | |
239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
240 _name = elementName; | |
241 uintx count = 0; | |
242 | |
243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
245 count +=1; | |
246 if ( (WarnOnStalledSpinLock > 0) | |
247 && (count % WarnOnStalledSpinLock == 0)) { | |
248 warning("JVMHistogram_lock seems to be stalled"); | |
249 } | |
250 } | |
251 } | |
252 | |
253 if(JVMHistogram == NULL) | |
254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
255 | |
256 JVMHistogram->add_element(this); | |
257 Atomic::dec(&JVMHistogram_lock); | |
258 } | |
259 | |
260 #define JVMCountWrapper(arg) \ | |
261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
263 | |
264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
268 #else | |
269 #define JVMWrapper(arg1) | |
270 #define JVMWrapper2(arg1, arg2) | |
271 #define JVMWrapper3(arg1, arg2, arg3) | |
272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
273 #endif | |
274 | |
275 | |
276 // Interface version ///////////////////////////////////////////////////////////////////// | |
277 | |
278 | |
279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
280 return JVM_INTERFACE_VERSION; | |
281 JVM_END | |
282 | |
283 | |
284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
285 | |
286 | |
287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
288 JVMWrapper("JVM_CurrentTimeMillis"); | |
289 return os::javaTimeMillis(); | |
290 JVM_END | |
291 | |
292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
293 JVMWrapper("JVM_NanoTime"); | |
294 return os::javaTimeNanos(); | |
295 JVM_END | |
296 | |
297 | |
298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
299 jobject dst, jint dst_pos, jint length)) | |
300 JVMWrapper("JVM_ArrayCopy"); | |
301 // Check if we have null pointers | |
302 if (src == NULL || dst == NULL) { | |
303 THROW(vmSymbols::java_lang_NullPointerException()); | |
304 } | |
305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
309 // Do copy | |
6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 311 JVM_END |
312 | |
313 | |
314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
315 JavaValue r(T_OBJECT); | |
316 // public synchronized Object put(Object key, Object value); | |
317 HandleMark hm(THREAD); | |
318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
320 JavaCalls::call_virtual(&r, | |
321 props, | |
1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
0 | 325 key_str, |
326 value_str, | |
327 THREAD); | |
328 } | |
329 | |
330 | |
331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
332 | |
333 | |
334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
335 JVMWrapper("JVM_InitProperties"); | |
336 ResourceMark rm; | |
337 | |
338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
339 | |
340 // System property list includes both user set via -D option and | |
341 // jvm system specific properties. | |
342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
343 PUTPROP(props, p->key(), p->value()); | |
344 } | |
345 | |
346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
347 // to the sun.nio.MaxDirectMemorySize property. | |
348 // Do this after setting user properties to prevent people | |
349 // from setting the value with a -D option, as requested. | |
350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
0 | 358 } |
359 | |
360 // JVM monitoring and management support | |
361 // Add the sun.management.compiler property for the compiler's name | |
362 { | |
363 #undef CSIZE | |
364 #if defined(_LP64) || defined(_WIN64) | |
365 #define CSIZE "64-Bit " | |
366 #else | |
367 #define CSIZE | |
368 #endif // 64bit | |
369 | |
370 #ifdef TIERED | |
371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
372 #else | |
373 #if defined(COMPILER1) | |
374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
375 #elif defined(COMPILER2) | |
376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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378 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
0 | 379 #else |
380 const char* compiler_name = ""; | |
381 #endif // compilers | |
382 #endif // TIERED | |
383 | |
384 if (*compiler_name != '\0' && | |
385 (Arguments::mode() != Arguments::_int)) { | |
386 PUTPROP(props, "sun.management.compiler", compiler_name); | |
387 } | |
388 } | |
389 | |
390 return properties; | |
391 JVM_END | |
392 | |
393 | |
394 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
395 | |
396 extern volatile jint vm_created; | |
397 | |
398 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
399 if (vm_created != 0 && (code == 0)) { | |
400 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
401 Universe::run_finalizers_on_exit(); | |
402 } | |
403 before_exit(thread); | |
404 vm_exit(code); | |
405 JVM_END | |
406 | |
407 | |
408 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
409 before_exit(thread); | |
410 vm_exit(code); | |
411 JVM_END | |
412 | |
413 | |
414 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
415 register_on_exit_function(func); | |
416 JVM_END | |
417 | |
418 | |
419 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
420 JVMWrapper("JVM_GC"); | |
421 if (!DisableExplicitGC) { | |
422 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
423 } | |
424 JVM_END | |
425 | |
426 | |
427 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
428 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
429 return Universe::heap()->millis_since_last_gc(); | |
430 JVM_END | |
431 | |
432 | |
433 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
434 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
435 JVM_END | |
436 | |
437 | |
438 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
439 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
440 JVM_END | |
441 | |
442 static inline jlong convert_size_t_to_jlong(size_t val) { | |
443 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
444 NOT_LP64 (return (jlong)val;) | |
445 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
446 } | |
447 | |
448 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
449 JVMWrapper("JVM_TotalMemory"); | |
450 size_t n = Universe::heap()->capacity(); | |
451 return convert_size_t_to_jlong(n); | |
452 JVM_END | |
453 | |
454 | |
455 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
456 JVMWrapper("JVM_FreeMemory"); | |
457 CollectedHeap* ch = Universe::heap(); | |
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458 size_t n; |
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459 { |
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460 MutexLocker x(Heap_lock); |
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461 n = ch->capacity() - ch->used(); |
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462 } |
0 | 463 return convert_size_t_to_jlong(n); |
464 JVM_END | |
465 | |
466 | |
467 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
468 JVMWrapper("JVM_MaxMemory"); | |
469 size_t n = Universe::heap()->max_capacity(); | |
470 return convert_size_t_to_jlong(n); | |
471 JVM_END | |
472 | |
473 | |
474 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
475 JVMWrapper("JVM_ActiveProcessorCount"); | |
476 return os::active_processor_count(); | |
477 JVM_END | |
478 | |
479 | |
480 | |
481 // java.lang.Throwable ////////////////////////////////////////////////////// | |
482 | |
483 | |
484 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
485 JVMWrapper("JVM_FillInStackTrace"); | |
486 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
487 java_lang_Throwable::fill_in_stack_trace(exception); | |
488 JVM_END | |
489 | |
490 | |
491 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
492 JVMWrapper("JVM_GetStackTraceDepth"); | |
493 oop exception = JNIHandles::resolve(throwable); | |
494 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
495 JVM_END | |
496 | |
497 | |
498 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
499 JVMWrapper("JVM_GetStackTraceElement"); | |
500 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
501 oop exception = JNIHandles::resolve(throwable); | |
502 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
503 return JNIHandles::make_local(env, element); | |
504 JVM_END | |
505 | |
506 | |
507 // java.lang.Object /////////////////////////////////////////////// | |
508 | |
509 | |
510 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
511 JVMWrapper("JVM_IHashCode"); | |
512 // as implemented in the classic virtual machine; return 0 if object is NULL | |
513 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
514 JVM_END | |
515 | |
516 | |
517 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
518 JVMWrapper("JVM_MonitorWait"); | |
519 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
520 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
521 if (JvmtiExport::should_post_monitor_wait()) { | |
522 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
523 } | |
524 ObjectSynchronizer::wait(obj, ms, CHECK); | |
525 JVM_END | |
526 | |
527 | |
528 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
529 JVMWrapper("JVM_MonitorNotify"); | |
530 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
531 ObjectSynchronizer::notify(obj, CHECK); | |
532 JVM_END | |
533 | |
534 | |
535 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
536 JVMWrapper("JVM_MonitorNotifyAll"); | |
537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
538 ObjectSynchronizer::notifyall(obj, CHECK); | |
539 JVM_END | |
540 | |
541 | |
542 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
543 JVMWrapper("JVM_Clone"); | |
544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
545 const KlassHandle klass (THREAD, obj->klass()); | |
546 JvmtiVMObjectAllocEventCollector oam; | |
547 | |
548 #ifdef ASSERT | |
549 // Just checking that the cloneable flag is set correct | |
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550 if (obj->is_array()) { |
0 | 551 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
552 } else { | |
553 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 554 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 555 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
556 } | |
557 #endif | |
558 | |
559 // Check if class of obj supports the Cloneable interface. | |
560 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
561 if (!klass->is_cloneable()) { | |
562 ResourceMark rm(THREAD); | |
563 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
564 } | |
565 | |
566 // Make shallow object copy | |
567 const int size = obj->size(); | |
568 oop new_obj = NULL; | |
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569 if (obj->is_array()) { |
0 | 570 const int length = ((arrayOop)obj())->length(); |
571 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
572 } else { | |
573 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
574 } | |
575 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
576 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
577 // be suspended in the middle of copying the pointer and end up with parts | |
578 // of two different pointers in the field. Subsequent dereferences will crash. | |
579 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
580 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
581 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
582 // The same is true of StubRoutines::object_copy and the various oop_copy | |
583 // variants, and of the code generated by the inline_native_clone intrinsic. | |
584 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
585 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
586 (size_t)align_object_size(size) / HeapWordsPerLong); | |
587 // Clear the header | |
588 new_obj->init_mark(); | |
589 | |
590 // Store check (mark entire object and let gc sort it out) | |
591 BarrierSet* bs = Universe::heap()->barrier_set(); | |
592 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
593 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
594 | |
595 // Caution: this involves a java upcall, so the clone should be | |
596 // "gc-robust" by this stage. | |
597 if (klass->has_finalizer()) { | |
598 assert(obj->is_instance(), "should be instanceOop"); | |
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599 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 600 } |
601 | |
602 return JNIHandles::make_local(env, oop(new_obj)); | |
603 JVM_END | |
604 | |
605 // java.lang.Compiler //////////////////////////////////////////////////// | |
606 | |
607 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
608 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
609 // functions are all silently ignored unless JVM warnings are printed. | |
610 | |
611 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
612 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
613 JVM_END | |
614 | |
615 | |
616 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
617 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
618 return JNI_FALSE; | |
619 JVM_END | |
620 | |
621 | |
622 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
623 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
624 return JNI_FALSE; | |
625 JVM_END | |
626 | |
627 | |
628 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
629 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
630 return JNI_FALSE; | |
631 JVM_END | |
632 | |
633 | |
634 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
635 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
636 return NULL; | |
637 JVM_END | |
638 | |
639 | |
640 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
641 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
642 JVM_END | |
643 | |
644 | |
645 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
646 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
647 JVM_END | |
648 | |
649 | |
650 | |
651 // Error message support ////////////////////////////////////////////////////// | |
652 | |
653 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
654 JVMWrapper("JVM_GetLastErrorString"); | |
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655 return (jint)os::lasterror(buf, len); |
0 | 656 JVM_END |
657 | |
658 | |
659 // java.io.File /////////////////////////////////////////////////////////////// | |
660 | |
661 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
662 JVMWrapper2("JVM_NativePath (%s)", path); | |
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663 return os::native_path(path); |
0 | 664 JVM_END |
665 | |
666 | |
667 // Misc. class handling /////////////////////////////////////////////////////////// | |
668 | |
669 | |
670 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
671 JVMWrapper("JVM_GetCallerClass"); | |
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672 |
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673 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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674 if (!JDK_Version::is_gte_jdk18x_version() || SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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675 Klass* k = thread->security_get_caller_class(depth); |
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676 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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677 } else { |
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678 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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679 assert(depth == -1, "wrong handshake depth"); |
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680 } |
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681 |
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682 // Getting the class of the caller frame. |
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683 // |
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684 // The call stack at this point looks something like this: |
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685 // |
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686 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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687 // [1] [ @CallerSensitive API.method ] |
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688 // [.] [ (skipped intermediate frames) ] |
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689 // [n] [ caller ] |
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690 vframeStream vfst(thread); |
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691 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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692 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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693 Method* m = vfst.method(); |
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694 assert(m != NULL, "sanity"); |
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695 switch (n) { |
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696 case 0: |
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697 // This must only be called from Reflection.getCallerClass |
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698 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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699 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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700 } |
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701 // fall-through |
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702 case 1: |
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703 // Frame 0 and 1 must be caller sensitive. |
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704 if (!m->caller_sensitive()) { |
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705 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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706 } |
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707 break; |
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708 default: |
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709 if (!m->is_ignored_by_security_stack_walk()) { |
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710 // We have reached the desired frame; return the holder class. |
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711 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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712 } |
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713 break; |
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714 } |
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715 } |
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716 return NULL; |
0 | 717 JVM_END |
718 | |
719 | |
720 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
721 JVMWrapper("JVM_FindPrimitiveClass"); | |
722 oop mirror = NULL; | |
723 BasicType t = name2type(utf); | |
724 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
725 mirror = Universe::java_mirror(t); | |
726 } | |
727 if (mirror == NULL) { | |
728 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
729 } else { | |
730 return (jclass) JNIHandles::make_local(env, mirror); | |
731 } | |
732 JVM_END | |
733 | |
734 | |
735 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
736 JVMWrapper("JVM_ResolveClass"); | |
737 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
738 JVM_END | |
739 | |
878
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740 |
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741 // Returns a class loaded by the bootstrap class loader; or null |
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742 // if not found. ClassNotFoundException is not thrown. |
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743 // |
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744 // Rationale behind JVM_FindClassFromBootLoader |
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745 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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746 // b> because of (a) java.dll has a direct dependecy on the unexported |
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747 // private symbol "_JVM_FindClassFromClassLoader@20". |
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748 // c> the launcher cannot use the private symbol as it dynamically opens |
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749 // the entry point, so if something changes, the launcher will fail |
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750 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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751 // stable exported interface. |
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752 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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753 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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754 // JVM_FindClassFromClassLoader and will not be backward compatible |
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755 // with older JDKs. |
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756 // Thus a public/stable exported entry point is the right solution, |
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757 // public here means public in linker semantics, and is exported only |
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758 // to the JDK, and is not intended to be a public API. |
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759 |
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760 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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761 const char* name)) |
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762 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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763 |
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764 // Java libraries should ensure that name is never null... |
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765 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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766 // It's impossible to create this class; the name cannot fit |
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767 // into the constant pool. |
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768 return NULL; |
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769 } |
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770 |
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771 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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772 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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773 if (k == NULL) { |
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774 return NULL; |
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775 } |
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776 |
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777 if (TraceClassResolution) { |
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778 trace_class_resolution(k); |
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779 } |
6983 | 780 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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781 JVM_END |
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782 |
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783 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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784 jboolean init, jobject loader, |
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785 jboolean throwError)) |
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786 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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787 throwError ? "error" : "exception"); |
388 | 788 // Java libraries should ensure that name is never null... |
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789 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 790 // It's impossible to create this class; the name cannot fit |
791 // into the constant pool. | |
792 if (throwError) { | |
793 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
794 } else { | |
795 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
796 } | |
797 } | |
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798 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 799 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
800 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
801 Handle(), throwError, THREAD); | |
802 | |
803 if (TraceClassResolution && result != NULL) { | |
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804 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 805 } |
806 return result; | |
0 | 807 JVM_END |
808 | |
809 | |
810 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
811 jboolean init, jclass from)) | |
812 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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813 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 814 // It's impossible to create this class; the name cannot fit |
815 // into the constant pool. | |
816 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
817 } | |
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818 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 819 oop from_class_oop = JNIHandles::resolve(from); |
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820 Klass* from_class = (from_class_oop == NULL) |
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821 ? (Klass*)NULL |
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822 : java_lang_Class::as_Klass(from_class_oop); |
0 | 823 oop class_loader = NULL; |
824 oop protection_domain = NULL; | |
825 if (from_class != NULL) { | |
6983 | 826 class_loader = from_class->class_loader(); |
827 protection_domain = from_class->protection_domain(); | |
0 | 828 } |
829 Handle h_loader(THREAD, class_loader); | |
830 Handle h_prot (THREAD, protection_domain); | |
831 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
832 h_prot, true, thread); | |
833 | |
834 if (TraceClassResolution && result != NULL) { | |
835 // this function is generally only used for class loading during verification. | |
836 ResourceMark rm; | |
837 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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838 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 839 const char * from_name = from_class->external_name(); |
0 | 840 |
841 oop mirror = JNIHandles::resolve_non_null(result); | |
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842 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 843 const char * to = to_class->external_name(); |
0 | 844 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
845 } | |
846 | |
847 return result; | |
848 JVM_END | |
849 | |
850 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
851 if (loader.is_null()) { | |
852 return; | |
853 } | |
854 | |
855 // check whether the current caller thread holds the lock or not. | |
856 // If not, increment the corresponding counter | |
857 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
858 ObjectSynchronizer::owner_self) { | |
859 counter->inc(); | |
860 } | |
861 } | |
862 | |
863 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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864 // and JVM_DefineClassWithSourceCond() |
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865 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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866 jobject loader, const jbyte *buf, |
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867 jsize len, jobject pd, const char *source, |
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868 jboolean verify, TRAPS) { |
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869 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 870 |
875
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871 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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872 JavaThread* jt = (JavaThread*) THREAD; |
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873 |
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874 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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875 ClassLoader::perf_define_appclass_selftime(), |
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876 ClassLoader::perf_define_appclasses(), |
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877 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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878 jt->get_thread_stat()->perf_timers_addr(), |
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879 PerfClassTraceTime::DEFINE_CLASS); |
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880 |
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881 if (UsePerfData) { |
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882 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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883 } |
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884 |
0 | 885 // Since exceptions can be thrown, class initialization can take place |
886 // if name is NULL no check for class name in .class stream has to be made. | |
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887 TempNewSymbol class_name = NULL; |
0 | 888 if (name != NULL) { |
889 const int str_len = (int)strlen(name); | |
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890 if (str_len > Symbol::max_length()) { |
0 | 891 // It's impossible to create this class; the name cannot fit |
892 // into the constant pool. | |
893 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
894 } | |
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895 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 896 } |
897 | |
898 ResourceMark rm(THREAD); | |
899 ClassFileStream st((u1*) buf, len, (char *)source); | |
900 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
901 if (UsePerfData) { | |
902 is_lock_held_by_thread(class_loader, | |
903 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
904 THREAD); | |
905 } | |
906 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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907 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 908 protection_domain, &st, |
973
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909 verify != 0, |
0 | 910 CHECK_NULL); |
911 | |
912 if (TraceClassResolution && k != NULL) { | |
913 trace_class_resolution(k); | |
914 } | |
915 | |
6983 | 916 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 917 } |
918 | |
919 | |
920 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
921 JVMWrapper2("JVM_DefineClass %s", name); | |
922 | |
973
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923 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 924 JVM_END |
925 | |
926 | |
927 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
928 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
929 | |
973
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930 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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931 JVM_END |
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932 |
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933 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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934 jobject loader, const jbyte *buf, |
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935 jsize len, jobject pd, |
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936 const char *source, jboolean verify)) |
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937 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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938 |
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939 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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940 JVM_END |
0 | 941 |
942 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
943 JVMWrapper("JVM_FindLoadedClass"); | |
944 ResourceMark rm(THREAD); | |
945 | |
946 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
947 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
948 | |
949 const char* str = java_lang_String::as_utf8_string(string()); | |
950 // Sanity check, don't expect null | |
951 if (str == NULL) return NULL; | |
952 | |
953 const int str_len = (int)strlen(str); | |
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954 if (str_len > Symbol::max_length()) { |
0 | 955 // It's impossible to create this class; the name cannot fit |
956 // into the constant pool. | |
957 return NULL; | |
958 } | |
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959 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 960 |
961 // Security Note: | |
962 // The Java level wrapper will perform the necessary security check allowing | |
963 // us to pass the NULL as the initiating class loader. | |
964 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
965 if (UsePerfData) { | |
966 is_lock_held_by_thread(h_loader, | |
967 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
968 THREAD); | |
969 } | |
970 | |
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971 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 972 h_loader, |
973 Handle(), | |
974 CHECK_NULL); | |
975 | |
976 return (k == NULL) ? NULL : | |
6983 | 977 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 978 JVM_END |
979 | |
980 | |
981 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
982 | |
983 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
984 assert (cls != NULL, "illegal class"); | |
985 JVMWrapper("JVM_GetClassName"); | |
986 JvmtiVMObjectAllocEventCollector oam; | |
987 ResourceMark rm(THREAD); | |
988 const char* name; | |
989 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
990 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
991 } else { | |
992 // Consider caching interned string in Klass | |
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993 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 994 assert(k->is_klass(), "just checking"); |
6983 | 995 name = k->external_name(); |
0 | 996 } |
997 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
998 return (jstring) JNIHandles::make_local(env, result); | |
999 JVM_END | |
1000 | |
1001 | |
1002 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1003 JVMWrapper("JVM_GetClassInterfaces"); | |
1004 JvmtiVMObjectAllocEventCollector oam; | |
1005 oop mirror = JNIHandles::resolve_non_null(cls); | |
1006 | |
1007 // Special handling for primitive objects | |
1008 if (java_lang_Class::is_primitive(mirror)) { | |
1009 // Primitive objects does not have any interfaces | |
1142 | 1010 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1011 return (jobjectArray) JNIHandles::make_local(env, r); |
1012 } | |
1013 | |
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1014 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1015 // Figure size of result array |
1016 int size; | |
1017 if (klass->oop_is_instance()) { | |
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1018 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1019 } else { |
1020 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1021 size = 2; | |
1022 } | |
1023 | |
1024 // Allocate result array | |
1142 | 1025 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1026 objArrayHandle result (THREAD, r); |
1027 // Fill in result | |
1028 if (klass->oop_is_instance()) { | |
1029 // Regular instance klass, fill in all local interfaces | |
1030 for (int index = 0; index < size; index++) { | |
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1031 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1032 result->obj_at_put(index, k->java_mirror()); |
0 | 1033 } |
1034 } else { | |
1035 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1036 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1037 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1038 } |
1039 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1040 JVM_END | |
1041 | |
1042 | |
1043 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1044 JVMWrapper("JVM_GetClassLoader"); | |
1045 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1046 return NULL; | |
1047 } | |
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1048 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1049 oop loader = k->class_loader(); |
0 | 1050 return JNIHandles::make_local(env, loader); |
1051 JVM_END | |
1052 | |
1053 | |
1054 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1055 JVMWrapper("JVM_IsInterface"); | |
1056 oop mirror = JNIHandles::resolve_non_null(cls); | |
1057 if (java_lang_Class::is_primitive(mirror)) { | |
1058 return JNI_FALSE; | |
1059 } | |
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1060 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1061 jboolean result = k->is_interface(); |
1062 assert(!result || k->oop_is_instance(), | |
0 | 1063 "all interfaces are instance types"); |
1064 // The compiler intrinsic for isInterface tests the | |
1065 // Klass::_access_flags bits in the same way. | |
1066 return result; | |
1067 JVM_END | |
1068 | |
1069 | |
1070 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1071 JVMWrapper("JVM_GetClassSigners"); | |
1072 JvmtiVMObjectAllocEventCollector oam; | |
1073 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1074 // There are no signers for primitive types | |
1075 return NULL; | |
1076 } | |
1077 | |
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1078 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1079 |
1080 // If there are no signers set in the class, or if the class | |
1081 // is an array, return NULL. | |
1082 if (signers == NULL) return NULL; | |
1083 | |
1084 // copy of the signers array | |
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1085 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1086 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1087 for (int index = 0; index < signers->length(); index++) { | |
1088 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1089 } | |
1090 | |
1091 // return the copy | |
1092 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1093 JVM_END | |
1094 | |
1095 | |
1096 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1097 JVMWrapper("JVM_SetClassSigners"); | |
1098 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1099 // This call is ignored for primitive types and arrays. | |
1100 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1101 // be called with an array. Only the bootstrap loader creates arrays. | |
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1102 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1103 if (k->oop_is_instance()) { |
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1104 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1105 } |
1106 } | |
1107 JVM_END | |
1108 | |
1109 | |
1110 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1111 JVMWrapper("JVM_GetProtectionDomain"); | |
1112 if (JNIHandles::resolve(cls) == NULL) { | |
1113 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1114 } | |
1115 | |
1116 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1117 // Primitive types does not have a protection domain. | |
1118 return NULL; | |
1119 } | |
1120 | |
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1121 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1122 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1123 JVM_END |
1124 | |
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1125 // Preserved in Graal repo so that linking against a JDK7 libjava.so works |
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1126 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) |
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1127 JVMWrapper("JVM_SetProtectionDomain"); |
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1128 |
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1129 ResourceMark rm(THREAD); |
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1130 const char* msg = "Obsolete JVM_SetProtectionDomain function called"; |
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1131 size_t buflen = strlen(msg); |
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1132 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
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1133 jio_snprintf(buf, buflen, msg); |
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1134 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
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1135 JVM_END |
0 | 1136 |
11010 | 1137 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1138 // If there is a security manager and protection domain, check the access | |
1139 // in the protection domain, otherwise it is authorized. | |
1140 if (java_lang_System::has_security_manager()) { | |
1141 | |
1142 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1143 // this context to revert to older behavior. | |
1144 // In this case the isAuthorized field in AccessControlContext is also not | |
1145 // present. | |
1146 if (Universe::protection_domain_implies_method() == NULL) { | |
1147 return true; | |
1148 } | |
1149 | |
1150 // Whitelist certain access control contexts | |
1151 if (java_security_AccessControlContext::is_authorized(context)) { | |
1152 return true; | |
1153 } | |
1154 | |
1155 oop prot = klass->protection_domain(); | |
1156 if (prot != NULL) { | |
1157 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1158 // in the new wrapper. | |
1159 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1160 Handle h_prot(THREAD, prot); | |
1161 JavaValue result(T_BOOLEAN); | |
1162 JavaCallArguments args(h_prot); | |
1163 JavaCalls::call(&result, m, &args, CHECK_false); | |
1164 return (result.get_jboolean() != 0); | |
1165 } | |
1166 } | |
1167 return true; | |
1168 } | |
1169 | |
1170 // Create an AccessControlContext with a protection domain with null codesource | |
1171 // and null permissions - which gives no permissions. | |
1172 oop create_dummy_access_control_context(TRAPS) { | |
1173 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1174 // new ProtectionDomain(null,null); | |
1175 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1176 Handle null_pd(THREAD, null_protection_domain); | |
1177 | |
1178 // new ProtectionDomain[] {pd}; | |
1179 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1180 context->obj_at_put(0, null_pd()); | |
1181 | |
1182 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1183 objArrayHandle h_context(THREAD, context); | |
1184 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1185 return result; | |
1186 } | |
0 | 1187 |
1188 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1189 JVMWrapper("JVM_DoPrivileged"); | |
1190 | |
1191 if (action == NULL) { | |
1192 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1193 } | |
1194 | |
11010 | 1195 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1196 vframeStream vfst(thread); | |
1197 vfst.security_get_caller_frame(1); | |
1198 | |
1199 if (vfst.at_end()) { | |
1200 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1201 } | |
1202 | |
1203 Method* method = vfst.method(); | |
1204 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1205 | |
1206 // Check that action object understands "Object run()" | |
1207 Handle h_context; | |
1208 if (context != NULL) { | |
1209 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1210 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1211 if (!authorized) { | |
1212 // Create an unprivileged access control object and call it's run function | |
1213 // instead. | |
1214 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1215 h_context = Handle(THREAD, noprivs); | |
1216 } | |
1217 } | |
0 | 1218 |
1219 // Check that action object understands "Object run()" | |
1220 Handle object (THREAD, JNIHandles::resolve(action)); | |
1221 | |
1222 // get run() method | |
6983 | 1223 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1224 vmSymbols::run_method_name(), |
1225 vmSymbols::void_object_signature()); | |
1226 methodHandle m (THREAD, m_oop); | |
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1227 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1228 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1229 } | |
1230 | |
11010 | 1231 // Stack allocated list of privileged stack elements |
1232 PrivilegedElement pi; | |
0 | 1233 if (!vfst.at_end()) { |
11010 | 1234 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1235 thread->set_privileged_stack_top(&pi); |
1236 } | |
1237 | |
1238 | |
1239 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1240 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1241 Handle pending_exception; | |
1242 JavaValue result(T_OBJECT); | |
1243 JavaCallArguments args(object); | |
1244 JavaCalls::call(&result, m, &args, THREAD); | |
1245 | |
1246 // done with action, remove ourselves from the list | |
1247 if (!vfst.at_end()) { | |
1248 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1249 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1250 } | |
1251 | |
1252 if (HAS_PENDING_EXCEPTION) { | |
1253 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1254 CLEAR_PENDING_EXCEPTION; | |
1255 | |
1142 | 1256 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1257 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1258 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1259 JavaCallArguments args(pending_exception); | |
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1260 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1261 vmSymbols::exception_void_signature(), |
0 | 1262 &args); |
1263 } | |
1264 } | |
1265 | |
1266 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1267 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1268 JVM_END | |
1269 | |
1270 | |
1271 // Returns the inherited_access_control_context field of the running thread. | |
1272 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1273 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1274 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1275 return JNIHandles::make_local(env, result); | |
1276 JVM_END | |
1277 | |
1278 class RegisterArrayForGC { | |
1279 private: | |
1280 JavaThread *_thread; | |
1281 public: | |
1282 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1283 _thread = thread; | |
1284 _thread->register_array_for_gc(array); | |
1285 } | |
1286 | |
1287 ~RegisterArrayForGC() { | |
1288 _thread->register_array_for_gc(NULL); | |
1289 } | |
1290 }; | |
1291 | |
1292 | |
1293 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1294 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1295 if (!UsePrivilegedStack) return NULL; | |
1296 | |
1297 ResourceMark rm(THREAD); | |
1298 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1299 JvmtiVMObjectAllocEventCollector oam; | |
1300 | |
1301 // count the protection domains on the execution stack. We collapse | |
1302 // duplicate consecutive protection domains into a single one, as | |
1303 // well as stopping when we hit a privileged frame. | |
1304 | |
1305 // Use vframeStream to iterate through Java frames | |
1306 vframeStream vfst(thread); | |
1307 | |
1308 oop previous_protection_domain = NULL; | |
1309 Handle privileged_context(thread, NULL); | |
1310 bool is_privileged = false; | |
1311 oop protection_domain = NULL; | |
1312 | |
1313 for(; !vfst.at_end(); vfst.next()) { | |
1314 // get method of frame | |
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1315 Method* method = vfst.method(); |
0 | 1316 intptr_t* frame_id = vfst.frame_id(); |
1317 | |
1318 // check the privileged frames to see if we have a match | |
1319 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1320 // this frame is privileged | |
1321 is_privileged = true; | |
1322 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1323 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1324 } else { | |
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1325 protection_domain = method->method_holder()->protection_domain(); |
0 | 1326 } |
1327 | |
1328 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1329 local_array->push(protection_domain); | |
1330 previous_protection_domain = protection_domain; | |
1331 } | |
1332 | |
1333 if (is_privileged) break; | |
1334 } | |
1335 | |
1336 | |
1337 // either all the domains on the stack were system domains, or | |
1338 // we had a privileged system domain | |
1339 if (local_array->is_empty()) { | |
1340 if (is_privileged && privileged_context.is_null()) return NULL; | |
1341 | |
1342 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1343 return JNIHandles::make_local(env, result); | |
1344 } | |
1345 | |
1346 // the resource area must be registered in case of a gc | |
1347 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1348 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1349 local_array->length(), CHECK_NULL); |
1350 objArrayHandle h_context(thread, context); | |
1351 for (int index = 0; index < local_array->length(); index++) { | |
1352 h_context->obj_at_put(index, local_array->at(index)); | |
1353 } | |
1354 | |
1355 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1356 | |
1357 return JNIHandles::make_local(env, result); | |
1358 JVM_END | |
1359 | |
1360 | |
1361 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1362 JVMWrapper("JVM_IsArrayClass"); | |
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1363 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1364 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1365 JVM_END |
1366 | |
1367 | |
1368 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1369 JVMWrapper("JVM_IsPrimitiveClass"); | |
1370 oop mirror = JNIHandles::resolve_non_null(cls); | |
1371 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1372 JVM_END | |
1373 | |
1374 | |
1375 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1376 JVMWrapper("JVM_GetComponentType"); | |
1377 oop mirror = JNIHandles::resolve_non_null(cls); | |
1378 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1379 return (jclass) JNIHandles::make_local(env, result); | |
1380 JVM_END | |
1381 | |
1382 | |
1383 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1384 JVMWrapper("JVM_GetClassModifiers"); | |
1385 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1386 // Primitive type | |
1387 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1388 } | |
1389 | |
6983 | 1390 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1391 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1392 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1393 return k->modifier_flags(); | |
1394 JVM_END | |
1395 | |
1396 | |
1397 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1398 | |
1399 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1400 JvmtiVMObjectAllocEventCollector oam; | |
1401 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1402 // of an InstanceKlass |
0 | 1403 |
1404 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1405 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1406 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1407 return (jobjectArray)JNIHandles::make_local(env, result); |
1408 } | |
1409 | |
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1410 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1411 InnerClassesIterator iter(k); |
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1412 |
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1413 if (iter.length() == 0) { |
0 | 1414 // Neither an inner nor outer class |
1142 | 1415 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1416 return (jobjectArray)JNIHandles::make_local(env, result); |
1417 } | |
1418 | |
1419 // find inner class info | |
1420 constantPoolHandle cp(thread, k->constants()); | |
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1421 int length = iter.length(); |
0 | 1422 |
1423 // Allocate temp. result array | |
1142 | 1424 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1425 objArrayHandle result (THREAD, r); |
1426 int members = 0; | |
1427 | |
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1428 for (; !iter.done(); iter.next()) { |
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1429 int ioff = iter.inner_class_info_index(); |
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1430 int ooff = iter.outer_class_info_index(); |
0 | 1431 |
1432 if (ioff != 0 && ooff != 0) { | |
1433 // Check to see if the name matches the class we're looking for | |
1434 // before attempting to find the class. | |
1435 if (cp->klass_name_at_matches(k, ooff)) { | |
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1436 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1437 if (outer_klass == k()) { |
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1438 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1439 instanceKlassHandle inner_klass (THREAD, ik); |
1440 | |
1441 // Throws an exception if outer klass has not declared k as | |
1442 // an inner klass | |
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1443 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1444 |
1445 result->obj_at_put(members, inner_klass->java_mirror()); | |
1446 members++; | |
1447 } | |
1448 } | |
1449 } | |
1450 } | |
1451 | |
1452 if (members != length) { | |
1453 // Return array of right length | |
1142 | 1454 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1455 for(int i = 0; i < members; i++) { |
1456 res->obj_at_put(i, result->obj_at(i)); | |
1457 } | |
1458 return (jobjectArray)JNIHandles::make_local(env, res); | |
1459 } | |
1460 | |
1461 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1462 JVM_END | |
1463 | |
1464 | |
1465 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1466 { |
0 | 1467 // ofClass is a reference to a java_lang_Class object. |
1468 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1469 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1470 return NULL; |
1471 } | |
1472 | |
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1473 bool inner_is_member = false; |
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1474 Klass* outer_klass |
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1475 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1476 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1477 if (outer_klass == NULL) return NULL; // already a top-level class |
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1478 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1479 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1480 } |
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1481 JVM_END |
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1482 |
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1483 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1484 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1485 bool* inner_is_member, |
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1486 TRAPS) { |
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1487 Thread* thread = THREAD; |
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1488 InnerClassesIterator iter(k); |
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1489 if (iter.length() == 0) { |
0 | 1490 // No inner class info => no declaring class |
1491 return NULL; | |
1492 } | |
1493 | |
1494 constantPoolHandle i_cp(thread, k->constants()); | |
1495 | |
1496 bool found = false; | |
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1497 Klass* ok; |
0 | 1498 instanceKlassHandle outer_klass; |
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1499 *inner_is_member = false; |
0 | 1500 |
1501 // Find inner_klass attribute | |
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1502 for (; !iter.done() && !found; iter.next()) { |
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1503 int ioff = iter.inner_class_info_index(); |
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1504 int ooff = iter.outer_class_info_index(); |
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1505 int noff = iter.inner_name_index(); |
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1506 if (ioff != 0) { |
0 | 1507 // Check to see if the name matches the class we're looking for |
1508 // before attempting to find the class. | |
1509 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1510 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1511 found = (k() == inner_klass); |
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1512 if (found && ooff != 0) { |
0 | 1513 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1514 outer_klass = instanceKlassHandle(thread, ok); | |
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1515 *inner_is_member = true; |
0 | 1516 } |
1517 } | |
1518 } | |
1519 } | |
1520 | |
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1521 if (found && outer_klass.is_null()) { |
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1522 // It may be anonymous; try for that. |
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1523 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1524 if (encl_method_class_idx != 0) { |
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1525 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1526 outer_klass = instanceKlassHandle(thread, ok); |
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1527 *inner_is_member = false; |
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1528 } |
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1529 } |
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1530 |
0 | 1531 // If no inner class attribute found for this class. |
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1532 if (outer_klass.is_null()) return NULL; |
0 | 1533 |
1534 // Throws an exception if outer klass has not declared k as an inner klass | |
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1535 // We need evidence that each klass knows about the other, or else |
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1536 // the system could allow a spoof of an inner class to gain access rights. |
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1537 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1538 return outer_klass(); |
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1539 } |
0 | 1540 |
1541 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1542 assert (cls != NULL, "illegal class"); | |
1543 JVMWrapper("JVM_GetClassSignature"); | |
1544 JvmtiVMObjectAllocEventCollector oam; | |
1545 ResourceMark rm(THREAD); | |
1546 // Return null for arrays and primatives | |
1547 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1548 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1549 if (k->oop_is_instance()) { |
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1550 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1551 if (sym == NULL) return NULL; |
0 | 1552 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1553 return (jstring) JNIHandles::make_local(env, str()); | |
1554 } | |
1555 } | |
1556 return NULL; | |
1557 JVM_END | |
1558 | |
1559 | |
1560 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1561 assert (cls != NULL, "illegal class"); | |
1562 JVMWrapper("JVM_GetClassAnnotations"); | |
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1563 |
0 | 1564 // Return null for arrays and primitives |
1565 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1566 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1567 if (k->oop_is_instance()) { |
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1568 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1569 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1570 } |
1571 } | |
1572 return NULL; | |
1573 JVM_END | |
1574 | |
1575 | |
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1576 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1577 // some of this code was adapted from from jni_FromReflectedField |
1578 | |
1579 oop reflected = JNIHandles::resolve_non_null(field); | |
1580 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1581 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1582 int slot = java_lang_reflect_Field::slot(reflected); |
1583 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1584 | |
1585 KlassHandle kh(THREAD, k); | |
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1586 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1587 |
1588 if (modifiers & JVM_ACC_STATIC) { | |
1589 // for static fields we only look in the current class | |
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1590 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1591 assert(false, "cannot find static field"); |
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1592 return false; |
0 | 1593 } |
1594 } else { | |
1595 // for instance fields we start with the current class and work | |
1596 // our way up through the superclass chain | |
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1597 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1598 assert(false, "cannot find instance field"); |
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1599 return false; |
0 | 1600 } |
1601 } | |
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1602 return true; |
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|
1603 } |
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1604 |
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1605 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1606 // field is a handle to a java.lang.reflect.Field object |
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1607 assert(field != NULL, "illegal field"); |
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1608 JVMWrapper("JVM_GetFieldAnnotations"); |
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1609 |
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1610 fieldDescriptor fd; |
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1611 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1612 if (!gotFd) { |
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1613 return NULL; |
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|
1614 } |
0 | 1615 |
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1616 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1617 JVM_END |
1618 | |
1619 | |
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1620 static Method* jvm_get_method_common(jobject method) { |
0 | 1621 // some of this code was adapted from from jni_FromReflectedMethod |
1622 | |
1623 oop reflected = JNIHandles::resolve_non_null(method); | |
1624 oop mirror = NULL; | |
1625 int slot = 0; | |
1626 | |
1142 | 1627 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1628 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1629 slot = java_lang_reflect_Constructor::slot(reflected); | |
1630 } else { | |
1142 | 1631 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1632 "wrong type"); |
1633 mirror = java_lang_reflect_Method::clazz(reflected); | |
1634 slot = java_lang_reflect_Method::slot(reflected); | |
1635 } | |
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1636 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1637 |
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1638 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1639 assert(m != NULL, "cannot find method"); |
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1640 return m; // caller has to deal with NULL in product mode |
0 | 1641 } |
1642 | |
1643 | |
1644 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1645 JVMWrapper("JVM_GetMethodAnnotations"); | |
1646 | |
1647 // method is a handle to a java.lang.reflect.Method object | |
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1648 Method* m = jvm_get_method_common(method); |
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1649 if (m == NULL) { |
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1650 return NULL; |
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|
1651 } |
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1652 |
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1653 return (jbyteArray) JNIHandles::make_local(env, |
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1654 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1655 JVM_END |
1656 | |
1657 | |
1658 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1659 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1660 | |
1661 // method is a handle to a java.lang.reflect.Method object | |
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1662 Method* m = jvm_get_method_common(method); |
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1663 if (m == NULL) { |
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|
1664 return NULL; |
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|
1665 } |
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|
1666 |
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1667 return (jbyteArray) JNIHandles::make_local(env, |
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1668 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1669 JVM_END |
1670 | |
1671 | |
1672 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1673 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1674 | |
1675 // method is a handle to a java.lang.reflect.Method object | |
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1676 Method* m = jvm_get_method_common(method); |
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1677 if (m == NULL) { |
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|
1678 return NULL; |
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|
1679 } |
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|
1680 |
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1681 return (jbyteArray) JNIHandles::make_local(env, |
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1682 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1683 JVM_END |
1684 | |
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1685 /* Type use annotations support (JDK 1.8) */ |
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1686 |
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1687 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1688 assert (cls != NULL, "illegal class"); |
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|
1689 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1690 ResourceMark rm(THREAD); |
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|
1691 // Return null for arrays and primitives |
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1692 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1693 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1694 if (k->oop_is_instance()) { |
8031 | 1695 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1696 if (type_annotations != NULL) { |
8031 | 1697 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
7611
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1698 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1699 } |
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1700 } |
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|
1701 } |
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|
1702 return NULL; |
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|
1703 JVM_END |
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1704 |
8818
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1705 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1706 assert (method != NULL, "illegal method"); |
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|
1707 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1708 |
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|
1709 // method is a handle to a java.lang.reflect.Method object |
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|
1710 Method* m = jvm_get_method_common(method); |
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1711 if (m == NULL) { |
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|
1712 return NULL; |
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|
1713 } |
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|
1714 |
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|
1715 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1716 if (type_annotations != NULL) { |
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|
1717 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1718 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1719 } |
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|
1720 |
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|
1721 return NULL; |
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|
1722 JVM_END |
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|
1723 |
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|
1724 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1725 assert (field != NULL, "illegal field"); |
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|
1726 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1727 |
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|
1728 fieldDescriptor fd; |
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|
1729 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1730 if (!gotFd) { |
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|
1731 return NULL; |
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|
1732 } |
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|
1733 |
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|
1734 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1735 JVM_END |
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|
1736 |
7588
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1737 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1738 if (!cp->is_within_bounds(index)) { |
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1739 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1740 } |
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|
1741 } |
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|
1742 |
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1743 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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|
1744 { |
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|
1745 JVMWrapper("JVM_GetMethodParameters"); |
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|
1746 // method is a handle to a java.lang.reflect.Method object |
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|
1747 Method* method_ptr = jvm_get_method_common(method); |
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|
1748 methodHandle mh (THREAD, method_ptr); |
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|
1749 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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|
1750 const int num_params = mh->method_parameters_length(); |
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|
1751 |
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1752 if (0 != num_params) { |
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1753 // make sure all the symbols are properly formatted |
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1754 for (int i = 0; i < num_params; i++) { |
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1755 MethodParametersElement* params = mh->method_parameters_start(); |
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1756 int index = params[i].name_cp_index; |
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1757 bounds_check(mh->constants(), index, CHECK_NULL); |
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1758 |
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1759 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1760 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1761 "Wrong type at constant pool index"); |
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|
1762 } |
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1763 |
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1764 } |
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1765 |
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1766 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1767 objArrayHandle result (THREAD, result_oop); |
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1768 |
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1769 for (int i = 0; i < num_params; i++) { |
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1770 MethodParametersElement* params = mh->method_parameters_start(); |
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1771 // For a 0 index, give a NULL symbol |
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1772 Symbol* sym = 0 != params[i].name_cp_index ? |
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1773 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1774 int flags = params[i].flags; |
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1775 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1776 flags, CHECK_NULL); |
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1777 result->obj_at_put(i, param); |
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1778 } |
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1779 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1780 } else { |
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1781 return (jobjectArray)NULL; |
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1782 } |
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1783 } |
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1784 JVM_END |
0 | 1785 |
1786 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1787 | |
1788 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1789 { | |
1790 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1791 JvmtiVMObjectAllocEventCollector oam; | |
1792 | |
1793 // Exclude primitive types and array types | |
1794 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1795 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1796 // Return empty array |
1142 | 1797 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1798 return (jobjectArray) JNIHandles::make_local(env, res); |
1799 } | |
1800 | |
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1801 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1802 constantPoolHandle cp(THREAD, k->constants()); |
1803 | |
1804 // Ensure class is linked | |
1805 k->link_class(CHECK_NULL); | |
1806 | |
1807 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1808 bool skip_backtrace = false; | |
1809 | |
1810 // Allocate result | |
1811 int num_fields; | |
1812 | |
1813 if (publicOnly) { | |
1814 num_fields = 0; | |
3938 | 1815 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1816 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1817 } |
1818 } else { | |
3938 | 1819 num_fields = k->java_fields_count(); |
0 | 1820 |
1142 | 1821 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1822 num_fields--; |
1823 skip_backtrace = true; | |
1824 } | |
1825 } | |
1826 | |
1142 | 1827 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1828 objArrayHandle result (THREAD, r); |
1829 | |
1830 int out_idx = 0; | |
1831 fieldDescriptor fd; | |
3938 | 1832 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1833 if (skip_backtrace) { |
1834 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1835 int offset = fs.offset(); |
0 | 1836 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1837 } | |
1838 | |
3938 | 1839 if (!publicOnly || fs.access_flags().is_public()) { |
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1840 fd.reinitialize(k(), fs.index()); |
0 | 1841 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1842 result->obj_at_put(out_idx, field); | |
1843 ++out_idx; | |
1844 } | |
1845 } | |
1846 assert(out_idx == num_fields, "just checking"); | |
1847 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1848 } | |
1849 JVM_END | |
1850 | |
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1851 static bool select_method(methodHandle method, bool want_constructor) { |
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1852 if (want_constructor) { |
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1853 return (method->is_initializer() && !method->is_static()); |
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1854 } else { |
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1855 return (!method->is_initializer() && !method->is_overpass()); |
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1856 } |
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1857 } |
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1858 |
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1859 static jobjectArray get_class_declared_methods_helper( |
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1860 JNIEnv *env, |
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1861 jclass ofClass, jboolean publicOnly, |
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1862 bool want_constructor, |
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1863 Klass* klass, TRAPS) { |
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1864 |
0 | 1865 JvmtiVMObjectAllocEventCollector oam; |
1866 | |
1867 // Exclude primitive types and array types | |
1868 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1869 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1870 // Return empty array |
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1871 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1872 return (jobjectArray) JNIHandles::make_local(env, res); |
1873 } | |
1874 | |
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1875 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1876 |
1877 // Ensure class is linked | |
1878 k->link_class(CHECK_NULL); | |
1879 | |
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1880 Array<Method*>* methods = k->methods(); |
0 | 1881 int methods_length = methods->length(); |
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1882 |
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1883 // Save original method_idnum in case of redefinition, which can change |
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1884 // the idnum of obsolete methods. The new method will have the same idnum |
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1885 // but if we refresh the methods array, the counts will be wrong. |
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1886 ResourceMark rm(THREAD); |
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1887 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1888 int num_methods = 0; |
1889 | |
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1890 for (int i = 0; i < methods_length; i++) { |
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1891 methodHandle method(THREAD, methods->at(i)); |
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1892 if (select_method(method, want_constructor)) { |
0 | 1893 if (!publicOnly || method->is_public()) { |
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1894 idnums->push(method->method_idnum()); |
0 | 1895 ++num_methods; |
1896 } | |
1897 } | |
1898 } | |
1899 | |
1900 // Allocate result | |
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1901 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1902 objArrayHandle result (THREAD, r); |
1903 | |
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1904 // Now just put the methods that we selected above, but go by their idnum |
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1905 // in case of redefinition. The methods can be redefined at any safepoint, |
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1906 // so above when allocating the oop array and below when creating reflect |
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1907 // objects. |
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1908 for (int i = 0; i < num_methods; i++) { |
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1909 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1910 if (method.is_null()) { |
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1911 // Method may have been deleted and seems this API can handle null |
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1912 // Otherwise should probably put a method that throws NSME |
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1913 result->obj_at_put(i, NULL); |
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1914 } else { |
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1915 oop m; |
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1916 if (want_constructor) { |
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1917 m = Reflection::new_constructor(method, CHECK_NULL); |
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1918 } else { |
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1919 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1920 } |
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1921 result->obj_at_put(i, m); |
0 | 1922 } |
1923 } | |
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1924 |
0 | 1925 return (jobjectArray) JNIHandles::make_local(env, result()); |
1926 } | |
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1927 |
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1928 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1929 { |
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1930 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1931 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1932 /*want_constructor*/ false, |
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1933 SystemDictionary::reflect_Method_klass(), THREAD); |
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1934 } |
0 | 1935 JVM_END |
1936 | |
1937 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1938 { | |
1939 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1940 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1941 /*want_constructor*/ true, |
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1942 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1943 } |
1944 JVM_END | |
1945 | |
1946 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1947 { | |
1948 JVMWrapper("JVM_GetClassAccessFlags"); | |
1949 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1950 // Primitive type | |
1951 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1952 } | |
1953 | |
6983 | 1954 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1955 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1956 } | |
1957 JVM_END | |
1958 | |
1959 | |
1960 // Constant pool access ////////////////////////////////////////////////////////// | |
1961 | |
1962 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1963 { | |
1964 JVMWrapper("JVM_GetClassConstantPool"); | |
1965 JvmtiVMObjectAllocEventCollector oam; | |
1966 | |
1967 // Return null for primitives and arrays | |
1968 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1969 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1970 if (k->oop_is_instance()) { |
0 | 1971 instanceKlassHandle k_h(THREAD, k); |
1972 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1973 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1974 return JNIHandles::make_local(jcp()); |
1975 } | |
1976 } | |
1977 return NULL; | |
1978 } | |
1979 JVM_END | |
1980 | |
1981 | |
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1982 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1983 { |
1984 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1985 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1986 return cp->length(); |
1987 } | |
1988 JVM_END | |
1989 | |
1990 | |
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1991 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1992 { |
1993 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1994 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1995 bounds_check(cp, index, CHECK_NULL); |
1996 constantTag tag = cp->tag_at(index); | |
1997 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1998 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1999 } | |
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2000 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2001 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2002 } |
2003 JVM_END | |
2004 | |
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2005 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2006 { |
2007 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2008 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2009 bounds_check(cp, index, CHECK_NULL); |
2010 constantTag tag = cp->tag_at(index); | |
2011 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2012 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2013 } | |
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2014 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2015 if (k == NULL) return NULL; |
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2016 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2017 } |
2018 JVM_END | |
2019 | |
2020 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2021 constantTag tag = cp->tag_at(index); | |
2022 if (!tag.is_method() && !tag.is_interface_method()) { | |
2023 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2024 } | |
2025 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2026 Klass* k_o; |
0 | 2027 if (force_resolution) { |
2028 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2029 } else { | |
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2030 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2031 if (k_o == NULL) return NULL; |
2032 } | |
2033 instanceKlassHandle k(THREAD, k_o); | |
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2034 Symbol* name = cp->uncached_name_ref_at(index); |
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2035 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2036 methodHandle m (THREAD, k->find_method(name, sig)); |
2037 if (m.is_null()) { | |
2038 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2039 } | |
2040 oop method; | |
2041 if (!m->is_initializer() || m->is_static()) { | |
2042 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2043 } else { | |
2044 method = Reflection::new_constructor(m, CHECK_NULL); | |
2045 } | |
2046 return JNIHandles::make_local(method); | |
2047 } | |
2048 | |
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2049 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2050 { |
2051 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2052 JvmtiVMObjectAllocEventCollector oam; | |
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2053 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2054 bounds_check(cp, index, CHECK_NULL); |
2055 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2056 return res; | |
2057 } | |
2058 JVM_END | |
2059 | |
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2060 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2061 { |
2062 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2063 JvmtiVMObjectAllocEventCollector oam; | |
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2064 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2065 bounds_check(cp, index, CHECK_NULL); |
2066 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2067 return res; | |
2068 } | |
2069 JVM_END | |
2070 | |
2071 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2072 constantTag tag = cp->tag_at(index); | |
2073 if (!tag.is_field()) { | |
2074 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2075 } | |
2076 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2077 Klass* k_o; |
0 | 2078 if (force_resolution) { |
2079 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2080 } else { | |
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2081 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2082 if (k_o == NULL) return NULL; |
2083 } | |
2084 instanceKlassHandle k(THREAD, k_o); | |
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2085 Symbol* name = cp->uncached_name_ref_at(index); |
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2086 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2087 fieldDescriptor fd; |
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2088 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2089 if (target_klass == NULL) { |
2090 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2091 } | |
2092 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2093 return JNIHandles::make_local(field); | |
2094 } | |
2095 | |
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2096 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2097 { |
2098 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2099 JvmtiVMObjectAllocEventCollector oam; | |
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2100 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2101 bounds_check(cp, index, CHECK_NULL); |
2102 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2103 return res; | |
2104 } | |
2105 JVM_END | |
2106 | |
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2107 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2108 { |
2109 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2110 JvmtiVMObjectAllocEventCollector oam; | |
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2111 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2112 bounds_check(cp, index, CHECK_NULL); |
2113 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2114 return res; | |
2115 } | |
2116 JVM_END | |
2117 | |
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2118 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2119 { |
2120 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2121 JvmtiVMObjectAllocEventCollector oam; | |
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2122 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2123 bounds_check(cp, index, CHECK_NULL); |
2124 constantTag tag = cp->tag_at(index); | |
2125 if (!tag.is_field_or_method()) { | |
2126 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2127 } | |
2128 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2129 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2130 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2131 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2132 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2133 objArrayHandle dest(THREAD, dest_o); |
2134 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2135 dest->obj_at_put(0, str()); | |
2136 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2137 dest->obj_at_put(1, str()); | |
2138 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2139 dest->obj_at_put(2, str()); | |
2140 return (jobjectArray) JNIHandles::make_local(dest()); | |
2141 } | |
2142 JVM_END | |
2143 | |
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2144 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2145 { |
2146 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2147 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2148 bounds_check(cp, index, CHECK_0); |
2149 constantTag tag = cp->tag_at(index); | |
2150 if (!tag.is_int()) { | |
2151 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2152 } | |
2153 return cp->int_at(index); | |
2154 } | |
2155 JVM_END | |
2156 | |
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2157 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2158 { |
2159 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2160 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2161 bounds_check(cp, index, CHECK_(0L)); |
2162 constantTag tag = cp->tag_at(index); | |
2163 if (!tag.is_long()) { | |
2164 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2165 } | |
2166 return cp->long_at(index); | |
2167 } | |
2168 JVM_END | |
2169 | |
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2170 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2171 { |
2172 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2173 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2174 bounds_check(cp, index, CHECK_(0.0f)); |
2175 constantTag tag = cp->tag_at(index); | |
2176 if (!tag.is_float()) { | |
2177 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2178 } | |
2179 return cp->float_at(index); | |
2180 } | |
2181 JVM_END | |
2182 | |
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2183 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2184 { |
2185 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2186 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2187 bounds_check(cp, index, CHECK_(0.0)); |
2188 constantTag tag = cp->tag_at(index); | |
2189 if (!tag.is_double()) { | |
2190 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2191 } | |
2192 return cp->double_at(index); | |
2193 } | |
2194 JVM_END | |
2195 | |
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2196 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2197 { |
2198 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2199 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2200 bounds_check(cp, index, CHECK_NULL); |
2201 constantTag tag = cp->tag_at(index); | |
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2202 if (!tag.is_string()) { |
0 | 2203 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2204 } | |
2205 oop str = cp->string_at(index, CHECK_NULL); | |
2206 return (jstring) JNIHandles::make_local(str); | |
2207 } | |
2208 JVM_END | |
2209 | |
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2210 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2211 { |
2212 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2213 JvmtiVMObjectAllocEventCollector oam; | |
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2214 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2215 bounds_check(cp, index, CHECK_NULL); |
2216 constantTag tag = cp->tag_at(index); | |
2217 if (!tag.is_symbol()) { | |
2218 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2219 } | |
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2220 Symbol* sym = cp->symbol_at(index); |
0 | 2221 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2222 return (jstring) JNIHandles::make_local(str()); | |
2223 } | |
2224 JVM_END | |
2225 | |
2226 | |
2227 // Assertion support. ////////////////////////////////////////////////////////// | |
2228 | |
2229 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2230 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2231 assert(cls != NULL, "bad class"); | |
2232 | |
2233 oop r = JNIHandles::resolve(cls); | |
2234 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2235 if (java_lang_Class::is_primitive(r)) return false; | |
2236 | |
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2237 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2238 assert(k->oop_is_instance(), "must be an instance klass"); |
2239 if (! k->oop_is_instance()) return false; | |
0 | 2240 |
2241 ResourceMark rm(THREAD); | |
6983 | 2242 const char* name = k->name()->as_C_string(); |
2243 bool system_class = k->class_loader() == NULL; | |
0 | 2244 return JavaAssertions::enabled(name, system_class); |
2245 | |
2246 JVM_END | |
2247 | |
2248 | |
2249 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2250 // command-line assertion arguments (i.e., -ea, -da). | |
2251 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2252 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2253 JvmtiVMObjectAllocEventCollector oam; | |
2254 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2255 return JNIHandles::make_local(env, asd); | |
2256 JVM_END | |
2257 | |
2258 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2259 | |
2260 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2261 | |
2262 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2263 // All functions from this section should call the jvmtiThreadSate function: | |
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2264 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2265 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2266 // was invoked in the middle of the class redefinition. |
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2267 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2268 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2269 | |
2270 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2271 JVMWrapper("JVM_GetClassNameUTF"); | |
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2272 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2273 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2274 return k->name()->as_utf8(); |
0 | 2275 JVM_END |
2276 | |
2277 | |
2278 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2279 JVMWrapper("JVM_GetClassCPTypes"); | |
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2280 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2281 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2282 // types will have length zero if this is not an InstanceKlass |
0 | 2283 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2284 if (k->oop_is_instance()) { |
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2285 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2286 for (int index = cp->length() - 1; index >= 0; index--) { |
2287 constantTag tag = cp->tag_at(index); | |
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2288 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2289 } |
2290 } | |
2291 JVM_END | |
2292 | |
2293 | |
2294 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2295 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2296 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2297 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2298 if (!k->oop_is_instance()) |
0 | 2299 return 0; |
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2300 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2301 JVM_END |
2302 | |
2303 | |
2304 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2305 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2306 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2307 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2308 if (!k->oop_is_instance()) |
0 | 2309 return 0; |
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2310 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2311 JVM_END |
2312 | |
2313 | |
2314 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2315 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2316 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2317 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2318 if (!k->oop_is_instance()) |
0 | 2319 return 0; |
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2320 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2321 JVM_END |
2322 | |
2323 | |
2324 // The following methods, used for the verifier, are never called with | |
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2325 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2326 // Typically, these methods are called in a loop with bounds determined |
2327 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2328 // zero for arrays. | |
2329 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2330 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2331 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2332 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2333 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2334 int length = method->checked_exceptions_length(); |
0 | 2335 if (length > 0) { |
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2336 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2337 for (int i = 0; i < length; i++) { |
2338 exceptions[i] = table[i].class_cp_index; | |
2339 } | |
2340 } | |
2341 JVM_END | |
2342 | |
2343 | |
2344 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2345 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2346 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2347 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2348 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2349 return method->checked_exceptions_length(); |
0 | 2350 JVM_END |
2351 | |
2352 | |
2353 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2354 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2355 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2356 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2357 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2358 memcpy(code, method->code_base(), method->code_size()); |
0 | 2359 JVM_END |
2360 | |
2361 | |
2362 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2363 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2364 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2365 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2366 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2367 return method->code_size(); |
0 | 2368 JVM_END |
2369 | |
2370 | |
2371 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2372 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2373 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2374 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2375 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2376 ExceptionTable extable(method); |
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2377 entry->start_pc = extable.start_pc(entry_index); |
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2378 entry->end_pc = extable.end_pc(entry_index); |
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2379 entry->handler_pc = extable.handler_pc(entry_index); |
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2380 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2381 JVM_END |
2382 | |
2383 | |
2384 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2385 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2386 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2387 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2388 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2389 return method->exception_table_length(); |
0 | 2390 JVM_END |
2391 | |
2392 | |
2393 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2394 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2395 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2396 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2397 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2398 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2399 JVM_END |
2400 | |
2401 | |
2402 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2403 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2404 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2405 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2406 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2407 JVM_END |
2408 | |
2409 | |
2410 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2411 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2412 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2413 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2414 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2415 return method->max_locals(); |
0 | 2416 JVM_END |
2417 | |
2418 | |
2419 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2420 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2421 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2422 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2423 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2424 return method->size_of_parameters(); |
0 | 2425 JVM_END |
2426 | |
2427 | |
2428 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2429 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2430 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2431 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2432 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2433 return method->verifier_max_stack(); |
0 | 2434 JVM_END |
2435 | |
2436 | |
2437 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2438 JVMWrapper("JVM_IsConstructorIx"); | |
2439 ResourceMark rm(THREAD); | |
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2440 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2441 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2442 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2443 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2444 JVM_END |
2445 | |
2446 | |
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2447 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2448 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2449 ResourceMark rm(THREAD); |
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2450 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2451 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2452 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2453 return method->is_overpass(); |
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2454 JVM_END |
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2455 |
0 | 2456 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2457 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2458 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2459 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2460 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2461 return method->name()->as_utf8(); |
0 | 2462 JVM_END |
2463 | |
2464 | |
2465 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2466 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2467 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2468 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2469 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2470 return method->signature()->as_utf8(); |
0 | 2471 JVM_END |
2472 | |
2473 /** | |
2474 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2475 * read entries in the constant pool. Since the old verifier always | |
2476 * works on a copy of the code, it will not see any rewriting that | |
2477 * may possibly occur in the middle of verification. So it is important | |
2478 * that nothing it calls tries to use the cpCache instead of the raw | |
2479 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2480 */ | |
2481 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2482 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2483 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2484 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2485 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2486 switch (cp->tag_at(cp_index).value()) { |
2487 case JVM_CONSTANT_Fieldref: | |
2488 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2489 default: | |
2490 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2491 } | |
2492 ShouldNotReachHere(); | |
2493 return NULL; | |
2494 JVM_END | |
2495 | |
2496 | |
2497 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2498 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2499 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2500 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2501 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2502 switch (cp->tag_at(cp_index).value()) { |
2503 case JVM_CONSTANT_InterfaceMethodref: | |
2504 case JVM_CONSTANT_Methodref: | |
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2505 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2506 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2507 default: | |
2508 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2509 } | |
2510 ShouldNotReachHere(); | |
2511 return NULL; | |
2512 JVM_END | |
2513 | |
2514 | |
2515 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2516 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2517 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2518 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2519 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2520 switch (cp->tag_at(cp_index).value()) { |
2521 case JVM_CONSTANT_InterfaceMethodref: | |
2522 case JVM_CONSTANT_Methodref: | |
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2523 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2524 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2525 default: | |
2526 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2527 } | |
2528 ShouldNotReachHere(); | |
2529 return NULL; | |
2530 JVM_END | |
2531 | |
2532 | |
2533 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2534 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2535 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2536 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2537 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2538 switch (cp->tag_at(cp_index).value()) { |
2539 case JVM_CONSTANT_Fieldref: | |
2540 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2541 default: | |
2542 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2543 } | |
2544 ShouldNotReachHere(); | |
2545 return NULL; | |
2546 JVM_END | |
2547 | |
2548 | |
2549 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2550 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2551 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2552 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2553 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2554 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2555 return classname->as_utf8(); |
2556 JVM_END | |
2557 | |
2558 | |
2559 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2560 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2561 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2562 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2563 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2564 switch (cp->tag_at(cp_index).value()) { |
2565 case JVM_CONSTANT_Fieldref: { | |
2566 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2567 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2568 return classname->as_utf8(); |
2569 } | |
2570 default: | |
2571 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2572 } | |
2573 ShouldNotReachHere(); | |
2574 return NULL; | |
2575 JVM_END | |
2576 | |
2577 | |
2578 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2579 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2580 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2581 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2582 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2583 switch (cp->tag_at(cp_index).value()) { |
2584 case JVM_CONSTANT_Methodref: | |
2585 case JVM_CONSTANT_InterfaceMethodref: { | |
2586 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2587 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2588 return classname->as_utf8(); |
2589 } | |
2590 default: | |
2591 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2592 } | |
2593 ShouldNotReachHere(); | |
2594 return NULL; | |
2595 JVM_END | |
2596 | |
2597 | |
3938 | 2598 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2599 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2600 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2601 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2602 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2603 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2604 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2605 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2606 switch (cp->tag_at(cp_index).value()) { |
2607 case JVM_CONSTANT_Fieldref: { | |
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2608 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2609 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2610 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2611 if (fs.name() == name && fs.signature() == signature) { | |
2612 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2613 } |
2614 } | |
2615 return -1; | |
2616 } | |
2617 default: | |
2618 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2619 } | |
2620 ShouldNotReachHere(); | |
2621 return 0; | |
2622 JVM_END | |
2623 | |
2624 | |
2625 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2626 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2627 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2628 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2629 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2630 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2631 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2632 switch (cp->tag_at(cp_index).value()) { |
2633 case JVM_CONSTANT_Methodref: | |
2634 case JVM_CONSTANT_InterfaceMethodref: { | |
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2635 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2636 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2637 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2638 int methods_count = methods->length(); |
2639 for (int i = 0; i < methods_count; i++) { | |
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2640 Method* method = methods->at(i); |
0 | 2641 if (method->name() == name && method->signature() == signature) { |
2642 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2643 } | |
2644 } | |
2645 return -1; | |
2646 } | |
2647 default: | |
2648 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2649 } | |
2650 ShouldNotReachHere(); | |
2651 return 0; | |
2652 JVM_END | |
2653 | |
2654 | |
2655 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2656 | |
2657 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2658 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2659 JVM_END | |
2660 | |
2661 | |
2662 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2663 JVMWrapper("JVM_IsSameClassPackage"); | |
2664 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2665 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2666 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2667 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2668 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2669 JVM_END | |
2670 | |
2671 | |
2672 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2673 | |
2674 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2675 JVMWrapper2("JVM_Open (%s)", fname); | |
2676 | |
2677 //%note jvm_r6 | |
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828eafbd85cc
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|
2678 int result = os::open(fname, flags, mode); |
0 | 2679 if (result >= 0) { |
2680 return result; | |
2681 } else { | |
2682 switch(errno) { | |
2683 case EEXIST: | |
2684 return JVM_EEXIST; | |
2685 default: | |
2686 return -1; | |
2687 } | |
2688 } | |
2689 JVM_END | |
2690 | |
2691 | |
2692 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2693 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2694 //%note jvm_r6 | |
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2695 return os::close(fd); |
0 | 2696 JVM_END |
2697 | |
2698 | |
2699 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2700 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2701 | |
2702 //%note jvm_r6 | |
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2703 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2704 JVM_END |
2705 | |
2706 | |
2707 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2708 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2709 | |
2710 //%note jvm_r6 | |
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|
2711 return (jint)os::write(fd, buf, nbytes); |
0 | 2712 JVM_END |
2713 | |
2714 | |
2715 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2716 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2717 //%note jvm_r6 | |
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2718 return os::available(fd, pbytes); |
0 | 2719 JVM_END |
2720 | |
2721 | |
2722 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2723 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2724 //%note jvm_r6 | |
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|
2725 return os::lseek(fd, offset, whence); |
0 | 2726 JVM_END |
2727 | |
2728 | |
2729 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2730 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
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2731 return os::ftruncate(fd, length); |
0 | 2732 JVM_END |
2733 | |
2734 | |
2735 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2736 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2737 //%note jvm_r6 | |
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2738 return os::fsync(fd); |
0 | 2739 JVM_END |
2740 | |
2741 | |
2742 // Printing support ////////////////////////////////////////////////// | |
2743 extern "C" { | |
2744 | |
2745 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2746 // see bug 4399518, 4417214 | |
2747 if ((intptr_t)count <= 0) return -1; | |
2748 return vsnprintf(str, count, fmt, args); | |
2749 } | |
2750 | |
2751 | |
2752 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2753 va_list args; | |
2754 int len; | |
2755 va_start(args, fmt); | |
2756 len = jio_vsnprintf(str, count, fmt, args); | |
2757 va_end(args); | |
2758 return len; | |
2759 } | |
2760 | |
2761 | |
2762 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2763 int len; | |
2764 va_list args; | |
2765 va_start(args, fmt); | |
2766 len = jio_vfprintf(f, fmt, args); | |
2767 va_end(args); | |
2768 return len; | |
2769 } | |
2770 | |
2771 | |
2772 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2773 if (Arguments::vfprintf_hook() != NULL) { | |
2774 return Arguments::vfprintf_hook()(f, fmt, args); | |
2775 } else { | |
2776 return vfprintf(f, fmt, args); | |
2777 } | |
2778 } | |
2779 | |
2780 | |
2191 | 2781 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2782 int len; |
2783 va_list args; | |
2784 va_start(args, fmt); | |
2785 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2786 va_end(args); | |
2787 return len; | |
2788 } | |
2789 | |
2790 | |
2791 // HotSpot specific jio method | |
2792 void jio_print(const char* s) { | |
2793 // Try to make this function as atomic as possible. | |
2794 if (Arguments::vfprintf_hook() != NULL) { | |
2795 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2796 } else { | |
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2797 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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2798 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2799 } |
2800 } | |
2801 | |
2802 } // Extern C | |
2803 | |
2804 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2805 | |
2806 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2807 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2808 // OSThread objects. The exception to this rule is when the target object is the thread | |
2809 // doing the operation, in which case we know that the thread won't exit until the | |
2810 // operation is done (all exits being voluntary). There are a few cases where it is | |
2811 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2812 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2813 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2814 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2815 // implementation is local to this file, we always lock Threads_lock for that one. | |
2816 | |
2817 static void thread_entry(JavaThread* thread, TRAPS) { | |
2818 HandleMark hm(THREAD); | |
2819 Handle obj(THREAD, thread->threadObj()); | |
2820 JavaValue result(T_VOID); | |
2821 JavaCalls::call_virtual(&result, | |
2822 obj, | |
1142 | 2823 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
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|
2824 vmSymbols::run_method_name(), |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2825 vmSymbols::void_method_signature(), |
0 | 2826 THREAD); |
2827 } | |
2828 | |
2829 | |
2830 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2831 JVMWrapper("JVM_StartThread"); | |
2832 JavaThread *native_thread = NULL; | |
2833 | |
2834 // We cannot hold the Threads_lock when we throw an exception, | |
2835 // due to rank ordering issues. Example: we might need to grab the | |
2836 // Heap_lock while we construct the exception. | |
2837 bool throw_illegal_thread_state = false; | |
2838 | |
2839 // We must release the Threads_lock before we can post a jvmti event | |
2840 // in Thread::start. | |
2841 { | |
2842 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2843 // we operate. | |
2844 MutexLocker mu(Threads_lock); | |
2845 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2846 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2847 // re-starting an already started thread, so we should usually find |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2848 // that the JavaThread is null. However for a JNI attached thread |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2849 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2850 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
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|
2851 // have to check for this |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2852 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2853 throw_illegal_thread_state = true; |
0 | 2854 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2855 // We could also check the stillborn flag to see if this thread was already stopped, but |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2856 // for historical reasons we let the thread detect that itself when it starts running |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2857 |
0 | 2858 jlong size = |
2859 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2860 // Allocate the C++ Thread structure and create the native thread. The | |
2861 // stack size retrieved from java is signed, but the constructor takes | |
2862 // size_t (an unsigned type), so avoid passing negative values which would | |
2863 // result in really large stacks. | |
2864 size_t sz = size > 0 ? (size_t) size : 0; | |
2865 native_thread = new JavaThread(&thread_entry, sz); | |
2866 | |
2867 // At this point it may be possible that no osthread was created for the | |
2868 // JavaThread due to lack of memory. Check for this situation and throw | |
2869 // an exception if necessary. Eventually we may want to change this so | |
2870 // that we only grab the lock if the thread was created successfully - | |
2871 // then we can also do this check and throw the exception in the | |
2872 // JavaThread constructor. | |
2873 if (native_thread->osthread() != NULL) { | |
2874 // Note: the current thread is not being used within "prepare". | |
2875 native_thread->prepare(jthread); | |
2876 } | |
2877 } | |
2878 } | |
2879 | |
2880 if (throw_illegal_thread_state) { | |
2881 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2882 } | |
2883 | |
2884 assert(native_thread != NULL, "Starting null thread?"); | |
2885 | |
2886 if (native_thread->osthread() == NULL) { | |
2887 // No one should hold a reference to the 'native_thread'. | |
2888 delete native_thread; | |
2889 if (JvmtiExport::should_post_resource_exhausted()) { | |
2890 JvmtiExport::post_resource_exhausted( | |
2891 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2892 "unable to create new native thread"); | |
2893 } | |
2894 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2895 "unable to create new native thread"); | |
2896 } | |
2897 | |
2898 Thread::start(native_thread); | |
2899 | |
2900 JVM_END | |
2901 | |
2902 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2903 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2904 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
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|
2905 // same thread as the sender, no safepoint is needed. |
0 | 2906 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2907 JVMWrapper("JVM_StopThread"); | |
2908 | |
2909 oop java_throwable = JNIHandles::resolve(throwable); | |
2910 if (java_throwable == NULL) { | |
2911 THROW(vmSymbols::java_lang_NullPointerException()); | |
2912 } | |
2913 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2914 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
2915 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2916 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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4717
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|
2917 receiver, (address)java_thread, throwable); |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2918 // First check if thread is alive |
0 | 2919 if (receiver != NULL) { |
2920 // Check if exception is getting thrown at self (use oop equality, since the | |
2921 // target object might exit) | |
2922 if (java_thread == thread->threadObj()) { | |
2923 THROW_OOP(java_throwable); | |
2924 } else { | |
2925 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2926 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2927 } | |
2928 } | |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2929 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2930 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
changeset
|
2931 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
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|
2932 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
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|
2933 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
changeset
|
2934 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2935 // stillborn flag for the first case, and if the thread has already |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2936 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2937 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2938 } |
0 | 2939 JVM_END |
2940 | |
2941 | |
2942 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2943 JVMWrapper("JVM_IsThreadAlive"); | |
2944 | |
2945 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2946 return java_lang_Thread::is_alive(thread_oop); | |
2947 JVM_END | |
2948 | |
2949 | |
2950 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2951 JVMWrapper("JVM_SuspendThread"); | |
2952 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2953 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2954 | |
2955 if (receiver != NULL) { | |
2956 // thread has run and has not exited (still on threads list) | |
2957 | |
2958 { | |
2959 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2960 if (receiver->is_external_suspend()) { | |
2961 // Don't allow nested external suspend requests. We can't return | |
2962 // an error from this interface so just ignore the problem. | |
2963 return; | |
2964 } | |
2965 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2966 return; | |
2967 } | |
2968 receiver->set_external_suspend(); | |
2969 } | |
2970 | |
2971 // java_suspend() will catch threads in the process of exiting | |
2972 // and will ignore them. | |
2973 receiver->java_suspend(); | |
2974 | |
2975 // It would be nice to have the following assertion in all the | |
2976 // time, but it is possible for a racing resume request to have | |
2977 // resumed this thread right after we suspended it. Temporarily | |
2978 // enable this assertion if you are chasing a different kind of | |
2979 // bug. | |
2980 // | |
2981 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2982 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2983 } | |
2984 JVM_END | |
2985 | |
2986 | |
2987 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2988 JVMWrapper("JVM_ResumeThread"); | |
2989 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2990 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2991 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2992 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2993 // looks at it. | |
2994 MutexLocker ml(Threads_lock); | |
2995 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2996 if (thr != NULL) { | |
2997 // the thread has run and is not in the process of exiting | |
2998 thr->java_resume(); | |
2999 } | |
3000 JVM_END | |
3001 | |
3002 | |
3003 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3004 JVMWrapper("JVM_SetThreadPriority"); | |
3005 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3006 MutexLocker ml(Threads_lock); | |
3007 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3008 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3009 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3010 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3011 Thread::set_priority(thr, (ThreadPriority)prio); | |
3012 } | |
3013 JVM_END | |
3014 | |
3015 | |
3016 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3017 JVMWrapper("JVM_Yield"); | |
3018 if (os::dont_yield()) return; | |
4006 | 3019 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3020 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3021 #else /* USDT2 */ |
3022 HOTSPOT_THREAD_YIELD(); | |
3023 #endif /* USDT2 */ | |
0 | 3024 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3025 // Critical for similar threading behaviour | |
3026 if (ConvertYieldToSleep) { | |
3027 os::sleep(thread, MinSleepInterval, false); | |
3028 } else { | |
3029 os::yield(); | |
3030 } | |
3031 JVM_END | |
3032 | |
3033 | |
3034 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3035 JVMWrapper("JVM_Sleep"); | |
3036 | |
3037 if (millis < 0) { | |
3038 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3039 } | |
3040 | |
3041 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3042 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3043 } | |
3044 | |
3045 // Save current thread state and restore it at the end of this block. | |
3046 // And set new thread state to SLEEPING. | |
3047 JavaThreadSleepState jtss(thread); | |
3048 | |
4006 | 3049 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3050 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3051 #else /* USDT2 */ |
3052 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3053 millis); | |
3054 #endif /* USDT2 */ | |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3055 |
10405 | 3056 EventThreadSleep event; |
3057 | |
0 | 3058 if (millis == 0) { |
3059 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3060 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3061 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3062 // for SOLARIS | |
3063 if (ConvertSleepToYield) { | |
3064 os::yield(); | |
3065 } else { | |
3066 ThreadState old_state = thread->osthread()->get_state(); | |
3067 thread->osthread()->set_state(SLEEPING); | |
3068 os::sleep(thread, MinSleepInterval, false); | |
3069 thread->osthread()->set_state(old_state); | |
3070 } | |
3071 } else { | |
3072 ThreadState old_state = thread->osthread()->get_state(); | |
3073 thread->osthread()->set_state(SLEEPING); | |
3074 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3075 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3076 // us while we were sleeping. We do not overwrite those. | |
3077 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3078 if (event.should_commit()) { |
3079 event.set_time(millis); | |
3080 event.commit(); | |
3081 } | |
4006 | 3082 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3083 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3084 #else /* USDT2 */ |
3085 HOTSPOT_THREAD_SLEEP_END( | |
3086 1); | |
3087 #endif /* USDT2 */ | |
0 | 3088 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3089 // to properly restore the thread state. That's likely wrong. | |
3090 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3091 } | |
3092 } | |
3093 thread->osthread()->set_state(old_state); | |
3094 } | |
10405 | 3095 if (event.should_commit()) { |
3096 event.set_time(millis); | |
3097 event.commit(); | |
3098 } | |
4006 | 3099 #ifndef USDT2 |
1324
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6935224: Adding new DTrace probes to work with Palantir
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diff
changeset
|
3100 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3101 #else /* USDT2 */ |
3102 HOTSPOT_THREAD_SLEEP_END( | |
3103 0); | |
3104 #endif /* USDT2 */ | |
0 | 3105 JVM_END |
3106 | |
3107 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3108 JVMWrapper("JVM_CurrentThread"); | |
3109 oop jthread = thread->threadObj(); | |
3110 assert (thread != NULL, "no current thread!"); | |
3111 return JNIHandles::make_local(env, jthread); | |
3112 JVM_END | |
3113 | |
3114 | |
3115 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3116 JVMWrapper("JVM_CountStackFrames"); | |
3117 | |
3118 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3119 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3120 bool throw_illegal_thread_state = false; | |
3121 int count = 0; | |
3122 | |
3123 { | |
3124 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3125 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3126 // acquire of the lock | |
3127 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3128 | |
3129 if (thr == NULL) { | |
3130 // do nothing | |
3131 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3132 // Check whether this java thread has been suspended already. If not, throws | |
3133 // IllegalThreadStateException. We defer to throw that exception until | |
3134 // Threads_lock is released since loading exception class has to leave VM. | |
3135 // The correct way to test a thread is actually suspended is | |
3136 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3137 // the Threads_lock. The above tests are sufficient for our purposes | |
3138 // provided the walkability of the stack is stable - which it isn't | |
3139 // 100% but close enough for most practical purposes. | |
3140 throw_illegal_thread_state = true; | |
3141 } else { | |
3142 // Count all java activation, i.e., number of vframes | |
3143 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3144 // Native frames are not counted | |
3145 if (!vfst.method()->is_native()) count++; | |
3146 } | |
3147 } | |
3148 } | |
3149 | |
3150 if (throw_illegal_thread_state) { | |
3151 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3152 "this thread is not suspended"); | |
3153 } | |
3154 return count; | |
3155 JVM_END | |
3156 | |
3157 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3158 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3159 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3160 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3161 // outside the critical section. Threads_lock is hot so we want to minimize | |
3162 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3163 // two steps. The 1st phase, performed under Threads_lock, would return | |
3164 // a closure that'd be invoked after Threads_lock was dropped. | |
3165 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3166 // admit spurious wakeups. | |
3167 | |
3168 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3169 JVMWrapper("JVM_Interrupt"); | |
3170 | |
3171 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3172 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3173 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3174 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3175 // acquire of the lock | |
3176 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3177 if (thr != NULL) { | |
3178 Thread::interrupt(thr); | |
3179 } | |
3180 JVM_END | |
3181 | |
3182 | |
3183 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3184 JVMWrapper("JVM_IsInterrupted"); | |
3185 | |
3186 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3187 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3188 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3189 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3190 // acquire of the lock | |
3191 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3192 if (thr == NULL) { | |
3193 return JNI_FALSE; | |
3194 } else { | |
3195 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3196 } | |
3197 JVM_END | |
3198 | |
3199 | |
3200 // Return true iff the current thread has locked the object passed in | |
3201 | |
3202 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3203 JVMWrapper("JVM_HoldsLock"); | |
3204 assert(THREAD->is_Java_thread(), "sanity check"); | |
3205 if (obj == NULL) { | |
3206 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3207 } | |
3208 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3209 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3210 JVM_END | |
3211 | |
3212 | |
3213 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3214 JVMWrapper("JVM_DumpAllStacks"); | |
3215 VM_PrintThreads op; | |
3216 VMThread::execute(&op); | |
3217 if (JvmtiExport::should_post_data_dump()) { | |
3218 JvmtiExport::post_data_dump(); | |
3219 } | |
3220 JVM_END | |
3221 | |
4006 | 3222 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3223 JVMWrapper("JVM_SetNativeThreadName"); | |
3224 ResourceMark rm(THREAD); | |
3225 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3226 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3227 // Thread naming only supported for the current thread, doesn't work for | |
3228 // target threads. | |
3229 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3230 // we don't set the name of an attached thread to avoid stepping | |
3231 // on other programs | |
3232 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3233 os::set_native_thread_name(thread_name); | |
3234 } | |
3235 JVM_END | |
0 | 3236 |
3237 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3238 | |
3239 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3240 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3241 if (jthread->privileged_stack_top() == NULL) return false; | |
3242 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3243 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3244 if (loader == NULL) return true; | |
3245 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3246 if (trusted) return true; | |
3247 } | |
3248 return false; | |
3249 } | |
3250 | |
3251 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3252 JVMWrapper("JVM_CurrentLoadedClass"); | |
3253 ResourceMark rm(THREAD); | |
3254 | |
3255 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3256 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3257 bool trusted = is_trusted_frame(thread, &vfst); | |
3258 if (trusted) return NULL; | |
3259 | |
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3260 Method* m = vfst.method(); |
0 | 3261 if (!m->is_native()) { |
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3262 InstanceKlass* holder = m->method_holder(); |
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3263 oop loader = holder->class_loader(); |
0 | 3264 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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3265 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3266 } |
3267 } | |
3268 } | |
3269 return NULL; | |
3270 JVM_END | |
3271 | |
3272 | |
3273 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3274 JVMWrapper("JVM_CurrentClassLoader"); | |
3275 ResourceMark rm(THREAD); | |
3276 | |
3277 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3278 | |
3279 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3280 bool trusted = is_trusted_frame(thread, &vfst); | |
3281 if (trusted) return NULL; | |
3282 | |
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3283 Method* m = vfst.method(); |
0 | 3284 if (!m->is_native()) { |
6940
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3285 InstanceKlass* holder = m->method_holder(); |
0 | 3286 assert(holder->is_klass(), "just checking"); |
6940
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3287 oop loader = holder->class_loader(); |
0 | 3288 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3289 return JNIHandles::make_local(env, loader); | |
3290 } | |
3291 } | |
3292 } | |
3293 return NULL; | |
3294 JVM_END | |
3295 | |
3296 | |
3297 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3298 JVMWrapper("JVM_GetClassContext"); | |
3299 ResourceMark rm(THREAD); | |
3300 JvmtiVMObjectAllocEventCollector oam; | |
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3301 vframeStream vfst(thread); |
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|
3302 |
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3303 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3304 // This must only be called from SecurityManager.getClassContext |
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3305 Method* m = vfst.method(); |
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3306 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3307 m->name() == vmSymbols::getClassContext_name() && |
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3308 m->signature() == vmSymbols::void_class_array_signature())) { |
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|
3309 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3310 } |
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|
3311 } |
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|
3312 |
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|
3313 // Collect method holders |
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3314 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3315 for (; !vfst.at_end(); vfst.security_next()) { |
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3316 Method* m = vfst.method(); |
0 | 3317 // Native frames are not returned |
8866
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3318 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3319 Klass* holder = m->method_holder(); |
0 | 3320 assert(holder->is_klass(), "just checking"); |
11001
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3321 klass_array->append(holder); |
0 | 3322 } |
3323 } | |
3324 | |
3325 // Create result array of type [Ljava/lang/Class; | |
11001
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3326 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3327 // Fill in mirrors corresponding to method holders |
11001
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|
3328 for (int i = 0; i < klass_array->length(); i++) { |
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3329 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3330 } |
3331 | |
3332 return (jobjectArray) JNIHandles::make_local(env, result); | |
3333 JVM_END | |
3334 | |
3335 | |
3336 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3337 JVMWrapper("JVM_ClassDepth"); | |
3338 ResourceMark rm(THREAD); | |
3339 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3340 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3341 | |
3342 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3343 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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|
3344 if (class_name_sym == NULL) { |
0 | 3345 return -1; |
3346 } | |
3347 | |
3348 int depth = 0; | |
3349 | |
3350 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3351 if (!vfst.method()->is_native()) { | |
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|
3352 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3353 assert(holder->is_klass(), "just checking"); |
6940
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|
3354 if (holder->name() == class_name_sym) { |
0 | 3355 return depth; |
3356 } | |
3357 depth++; | |
3358 } | |
3359 } | |
3360 return -1; | |
3361 JVM_END | |
3362 | |
3363 | |
3364 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3365 JVMWrapper("JVM_ClassLoaderDepth"); | |
3366 ResourceMark rm(THREAD); | |
3367 int depth = 0; | |
3368 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3369 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3370 bool trusted = is_trusted_frame(thread, &vfst); | |
3371 if (trusted) return -1; | |
3372 | |
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3373 Method* m = vfst.method(); |
0 | 3374 if (!m->is_native()) { |
6940
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3375 InstanceKlass* holder = m->method_holder(); |
0 | 3376 assert(holder->is_klass(), "just checking"); |
6940
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3377 oop loader = holder->class_loader(); |
0 | 3378 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3379 return depth; | |
3380 } | |
3381 depth++; | |
3382 } | |
3383 } | |
3384 return -1; | |
3385 JVM_END | |
3386 | |
3387 | |
3388 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3389 | |
3390 | |
3391 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3392 JVMWrapper("JVM_GetSystemPackage"); | |
3393 ResourceMark rm(THREAD); | |
3394 JvmtiVMObjectAllocEventCollector oam; | |
3395 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3396 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3397 return (jstring) JNIHandles::make_local(result); | |
3398 JVM_END | |
3399 | |
3400 | |
3401 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3402 JVMWrapper("JVM_GetSystemPackages"); | |
3403 JvmtiVMObjectAllocEventCollector oam; | |
3404 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3405 return (jobjectArray) JNIHandles::make_local(result); | |
3406 JVM_END | |
3407 | |
3408 | |
3409 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3410 | |
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3411 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3412 if (current_class == NULL) { |
3413 return true; | |
3414 } | |
3415 if ((current_class == field_class) || access.is_public()) { | |
3416 return true; | |
3417 } | |
3418 | |
3419 if (access.is_protected()) { | |
3420 // See if current_class is a subclass of field_class | |
6983 | 3421 if (current_class->is_subclass_of(field_class)) { |
0 | 3422 return true; |
3423 } | |
3424 } | |
3425 | |
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3426 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3427 } |
3428 | |
3429 | |
3430 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3431 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3432 JVMWrapper("JVM_AllocateNewObject"); | |
3433 JvmtiVMObjectAllocEventCollector oam; | |
3434 // Receiver is not used | |
3435 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3436 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3437 | |
3438 // Cannot instantiate primitive types | |
3439 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3440 ResourceMark rm(THREAD); | |
3441 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3442 } | |
3443 | |
3444 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3445 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3446 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3447 ResourceMark rm(THREAD); |
3448 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3449 } | |
3450 | |
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3451 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3452 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3453 |
3454 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3455 | |
3456 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3457 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3458 | |
3459 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3460 curr_klass->initialize(CHECK_NULL); | |
3461 | |
3462 methodHandle m (THREAD, | |
3463 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3464 vmSymbols::void_method_signature())); | |
3465 if (m.is_null()) { | |
3466 ResourceMark rm(THREAD); | |
3467 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3468 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3469 vmSymbols::object_initializer_name(), |
3470 vmSymbols::void_method_signature())); | |
3471 } | |
3472 | |
3473 if (curr_klass == init_klass && !m->is_public()) { | |
3474 // Calling the constructor for class 'curr_klass'. | |
3475 // Only allow calls to a public no-arg constructor. | |
3476 // This path corresponds to creating an Externalizable object. | |
3477 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3478 } | |
3479 | |
3480 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3481 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3482 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3483 } | |
3484 | |
3485 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3486 // Call constructor m. This might call a constructor higher up in the hierachy | |
3487 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3488 | |
3489 return JNIHandles::make_local(obj()); | |
3490 JVM_END | |
3491 | |
3492 | |
3493 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3494 JVMWrapper("JVM_AllocateNewArray"); | |
3495 JvmtiVMObjectAllocEventCollector oam; | |
3496 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3497 | |
3498 if (java_lang_Class::is_primitive(mirror)) { | |
3499 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3500 } | |
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3501 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3502 oop result; |
3503 | |
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3504 if (k->oop_is_typeArray()) { |
0 | 3505 // typeArray |
6831
d8ce2825b193
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changeset
|
3506 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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|
3507 } else if (k->oop_is_objArray()) { |
0 | 3508 // objArray |
6831
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changeset
|
3509 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3510 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3511 result = oak->allocate(length, CHECK_NULL); | |
3512 } else { | |
3513 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3514 } | |
3515 return JNIHandles::make_local(env, result); | |
3516 JVM_END | |
3517 | |
3518 | |
3519 // Return the first non-null class loader up the execution stack, or null | |
3520 // if only code from the null class loader is on the stack. | |
3521 | |
3522 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3523 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3524 // UseNewReflection | |
3525 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
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changeset
|
3526 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3527 if (loader != NULL) { |
3528 return JNIHandles::make_local(env, loader); | |
3529 } | |
3530 } | |
3531 return NULL; | |
3532 JVM_END | |
3533 | |
3534 | |
3535 // Load a class relative to the most recent class on the stack with a non-null | |
3536 // classloader. | |
3537 // This function has been deprecated and should not be considered part of the | |
3538 // specified JVM interface. | |
3539 | |
3540 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3541 jclass currClass, jstring currClassName)) | |
3542 JVMWrapper("JVM_LoadClass0"); | |
3543 // Receiver is not used | |
3544 ResourceMark rm(THREAD); | |
3545 | |
3546 // Class name argument is not guaranteed to be in internal format | |
3547 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3548 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3549 | |
3550 const char* str = java_lang_String::as_utf8_string(string()); | |
3551 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3552 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3553 // It's impossible to create this class; the name cannot fit |
3554 // into the constant pool. | |
3555 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3556 } | |
3557 | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
3558 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3559 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3560 // Find the most recent class on the stack with a non-null classloader | |
3561 oop loader = NULL; | |
3562 oop protection_domain = NULL; | |
3563 if (curr_klass.is_null()) { | |
3564 for (vframeStream vfst(thread); | |
3565 !vfst.at_end() && loader == NULL; | |
3566 vfst.next()) { | |
3567 if (!vfst.method()->is_native()) { | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3568 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3569 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3570 protection_domain = holder->protection_domain(); |
0 | 3571 } |
3572 } | |
3573 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3574 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3575 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3576 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3577 } |
3578 Handle h_loader(THREAD, loader); | |
3579 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3580 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3581 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3582 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3583 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3584 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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parents:
579
diff
changeset
|
3585 return result; |
0 | 3586 JVM_END |
3587 | |
3588 | |
3589 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3590 | |
3591 | |
3592 // resolve array handle and check arguments | |
3593 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3594 if (arr == NULL) { | |
3595 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3596 } | |
3597 oop a = JNIHandles::resolve_non_null(arr); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3598 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3599 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3600 } | |
3601 return arrayOop(a); | |
3602 } | |
3603 | |
3604 | |
3605 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3606 JVMWrapper("JVM_GetArrayLength"); | |
3607 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3608 return a->length(); | |
3609 JVM_END | |
3610 | |
3611 | |
3612 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3613 JVMWrapper("JVM_Array_Get"); | |
3614 JvmtiVMObjectAllocEventCollector oam; | |
3615 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3616 jvalue value; | |
3617 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3618 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3619 return JNIHandles::make_local(env, box); | |
3620 JVM_END | |
3621 | |
3622 | |
3623 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3624 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3625 jvalue value; | |
3626 value.i = 0; // to initialize value before getting used in CHECK | |
3627 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3628 assert(a->is_typeArray(), "just checking"); | |
3629 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3630 BasicType wide_type = (BasicType) wCode; | |
3631 if (type != wide_type) { | |
3632 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3633 } | |
3634 return value; | |
3635 JVM_END | |
3636 | |
3637 | |
3638 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3639 JVMWrapper("JVM_SetArrayElement"); | |
3640 arrayOop a = check_array(env, arr, false, CHECK); | |
3641 oop box = JNIHandles::resolve(val); | |
3642 jvalue value; | |
3643 value.i = 0; // to initialize value before getting used in CHECK | |
3644 BasicType value_type; | |
3645 if (a->is_objArray()) { | |
3646 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3647 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3648 } else { | |
3649 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3650 } | |
3651 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3652 JVM_END | |
3653 | |
3654 | |
3655 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3656 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3657 arrayOop a = check_array(env, arr, true, CHECK); | |
3658 assert(a->is_typeArray(), "just checking"); | |
3659 BasicType value_type = (BasicType) vCode; | |
3660 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3661 JVM_END | |
3662 | |
3663 | |
3664 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3665 JVMWrapper("JVM_NewArray"); | |
3666 JvmtiVMObjectAllocEventCollector oam; | |
3667 oop element_mirror = JNIHandles::resolve(eltClass); | |
3668 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3669 return JNIHandles::make_local(env, result); | |
3670 JVM_END | |
3671 | |
3672 | |
3673 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3674 JVMWrapper("JVM_NewMultiArray"); | |
3675 JvmtiVMObjectAllocEventCollector oam; | |
3676 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3677 oop element_mirror = JNIHandles::resolve(eltClass); | |
3678 assert(dim_array->is_typeArray(), "just checking"); | |
3679 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3680 return JNIHandles::make_local(env, result); | |
3681 JVM_END | |
3682 | |
3683 | |
3684 // Networking library support //////////////////////////////////////////////////////////////////// | |
3685 | |
3686 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3687 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3688 return 0; |
0 | 3689 JVM_END |
3690 | |
3691 | |
3692 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3693 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3694 return os::socket(domain, type, protocol); |
0 | 3695 JVM_END |
3696 | |
3697 | |
3698 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3699 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3700 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3701 return os::socket_close(fd); |
0 | 3702 JVM_END |
3703 | |
3704 | |
3705 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3706 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3707 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3708 return os::socket_shutdown(fd, howto); |
0 | 3709 JVM_END |
3710 | |
3711 | |
3712 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3713 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3714 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3715 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3716 JVM_END |
3717 | |
3718 | |
3719 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3720 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3721 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3722 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3723 JVM_END |
3724 | |
3725 | |
3726 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3727 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3728 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3729 return os::timeout(fd, timeout); |
0 | 3730 JVM_END |
3731 | |
3732 | |
3733 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3734 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3735 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3736 return os::listen(fd, count); |
0 | 3737 JVM_END |
3738 | |
3739 | |
3740 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3741 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3742 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3743 return os::connect(fd, him, (socklen_t)len); |
0 | 3744 JVM_END |
3745 | |
3746 | |
3747 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3748 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3749 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3750 return os::bind(fd, him, (socklen_t)len); |
0 | 3751 JVM_END |
3752 | |
3753 | |
3754 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3755 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3756 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3757 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3758 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3759 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3760 return result; |
0 | 3761 JVM_END |
3762 | |
3763 | |
3764 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3765 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3766 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3767 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3768 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3769 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3770 return result; |
0 | 3771 JVM_END |
3772 | |
3773 | |
3774 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3775 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3776 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3777 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3778 jint result = os::get_sock_name(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3779 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3780 return result; |
0 | 3781 JVM_END |
3782 | |
3783 | |
3784 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3785 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3786 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3787 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3788 JVM_END |
3789 | |
3790 | |
3791 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3792 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3793 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3794 return os::socket_available(fd, pbytes); |
0 | 3795 JVM_END |
3796 | |
3797 | |
3798 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3799 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3800 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3801 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3802 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3803 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3804 return result; |
0 | 3805 JVM_END |
3806 | |
3807 | |
3808 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3809 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3810 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3811 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3812 JVM_END |
3813 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3814 |
0 | 3815 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3816 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3818 JVM_END |
0 | 3819 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3820 |
0 | 3821 // Library support /////////////////////////////////////////////////////////////////////////// |
3822 | |
3823 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3824 //%note jvm_ct | |
3825 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3826 char ebuf[1024]; | |
3827 void *load_result; | |
3828 { | |
3829 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3830 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3831 } |
3832 if (load_result == NULL) { | |
3833 char msg[1024]; | |
3834 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3835 // Since 'ebuf' may contain a string encoded using | |
3836 // platform encoding scheme, we need to pass | |
3837 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3838 // as the last argument. See bug 6367357. | |
3839 Handle h_exception = | |
3840 Exceptions::new_exception(thread, | |
3841 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3842 msg, Exceptions::unsafe_to_utf8); | |
3843 | |
3844 THROW_HANDLE_0(h_exception); | |
3845 } | |
3846 return load_result; | |
3847 JVM_END | |
3848 | |
3849 | |
3850 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3851 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3852 os::dll_unload(handle); |
0 | 3853 JVM_END |
3854 | |
3855 | |
3856 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3857 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3858 return os::dll_lookup(handle, name); |
0 | 3859 JVM_END |
3860 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3861 |
0 | 3862 // Floating point support //////////////////////////////////////////////////////////////////// |
3863 | |
3864 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3865 JVMWrapper("JVM_IsNaN"); | |
3866 return g_isnan(a); | |
3867 JVM_END | |
3868 | |
3869 | |
3870 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3871 | |
3872 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3873 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3874 return Threads::is_supported_jni_version_including_1_1(version); | |
3875 JVM_END | |
3876 | |
3877 | |
3878 // String support /////////////////////////////////////////////////////////////////////////// | |
3879 | |
3880 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3881 JVMWrapper("JVM_InternString"); | |
3882 JvmtiVMObjectAllocEventCollector oam; | |
3883 if (str == NULL) return NULL; | |
3884 oop string = JNIHandles::resolve_non_null(str); | |
3885 oop result = StringTable::intern(string, CHECK_NULL); | |
3886 return (jstring) JNIHandles::make_local(env, result); | |
3887 JVM_END | |
3888 | |
3889 | |
3890 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3891 | |
3892 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3893 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3894 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3895 // that only works with java threads. | |
3896 | |
3897 | |
3898 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3899 VM_Exit::block_if_vm_exited(); | |
3900 JVMWrapper("JVM_RawMonitorCreate"); | |
3901 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3902 } | |
3903 | |
3904 | |
3905 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3906 VM_Exit::block_if_vm_exited(); | |
3907 JVMWrapper("JVM_RawMonitorDestroy"); | |
3908 delete ((Mutex*) mon); | |
3909 } | |
3910 | |
3911 | |
3912 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3913 VM_Exit::block_if_vm_exited(); | |
3914 JVMWrapper("JVM_RawMonitorEnter"); | |
3915 ((Mutex*) mon)->jvm_raw_lock(); | |
3916 return 0; | |
3917 } | |
3918 | |
3919 | |
3920 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3921 VM_Exit::block_if_vm_exited(); | |
3922 JVMWrapper("JVM_RawMonitorExit"); | |
3923 ((Mutex*) mon)->jvm_raw_unlock(); | |
3924 } | |
3925 | |
3926 | |
3927 // Support for Serialization | |
3928 | |
3929 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3930 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3931 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3932 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3933 | |
3934 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3935 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3936 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3937 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3938 | |
3939 | |
3940 void initialize_converter_functions() { | |
3941 if (JDK_Version::is_gte_jdk14x_version()) { | |
3942 // These functions only exist for compatibility with 1.3.1 and earlier | |
3943 return; | |
3944 } | |
3945 | |
3946 // called from universe_post_init() | |
3947 assert( | |
3948 int_bits_to_float_fn == NULL && | |
3949 long_bits_to_double_fn == NULL && | |
3950 float_to_int_bits_fn == NULL && | |
3951 double_to_long_bits_fn == NULL , | |
3952 "initialization done twice" | |
3953 ); | |
3954 // initialize | |
3955 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3956 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3957 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3958 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3959 // verify | |
3960 assert( | |
3961 int_bits_to_float_fn != NULL && | |
3962 long_bits_to_double_fn != NULL && | |
3963 float_to_int_bits_fn != NULL && | |
3964 double_to_long_bits_fn != NULL , | |
3965 "initialization failed" | |
3966 ); | |
3967 } | |
3968 | |
3969 | |
3970 // Serialization | |
3971 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3972 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3973 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3974 | |
3975 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3976 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3977 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3978 oop o = JNIHandles::resolve(obj); | |
3979 | |
3980 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3981 THROW(vmSymbols::java_lang_NullPointerException()); | |
3982 } | |
3983 | |
3984 jsize nfids = fids->length(); | |
3985 if (nfids == 0) return; | |
3986 | |
3987 if (tcodes->length() < nfids) { | |
3988 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3989 } | |
3990 | |
3991 jsize off = 0; | |
3992 /* loop through fields, setting values */ | |
3993 for (jsize i = 0; i < nfids; i++) { | |
3994 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3995 int field_offset; | |
3996 if (fid != NULL) { | |
3997 // NULL is a legal value for fid, but retrieving the field offset | |
3998 // trigger assertion in that case | |
3999 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4000 } | |
4001 | |
4002 switch (tcodes->char_at(i)) { | |
4003 case 'Z': | |
4004 if (fid != NULL) { | |
4005 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
4006 o->bool_field_put(field_offset, val); | |
4007 } | |
4008 off++; | |
4009 break; | |
4010 | |
4011 case 'B': | |
4012 if (fid != NULL) { | |
4013 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
4014 } | |
4015 off++; | |
4016 break; | |
4017 | |
4018 case 'C': | |
4019 if (fid != NULL) { | |
4020 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
4021 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
4022 o->char_field_put(field_offset, val); | |
4023 } | |
4024 off += 2; | |
4025 break; | |
4026 | |
4027 case 'S': | |
4028 if (fid != NULL) { | |
4029 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
4030 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
4031 o->short_field_put(field_offset, val); | |
4032 } | |
4033 off += 2; | |
4034 break; | |
4035 | |
4036 case 'I': | |
4037 if (fid != NULL) { | |
4038 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4039 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4040 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4041 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4042 o->int_field_put(field_offset, ival); | |
4043 } | |
4044 off += 4; | |
4045 break; | |
4046 | |
4047 case 'F': | |
4048 if (fid != NULL) { | |
4049 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4050 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4051 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4052 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4053 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
4054 o->float_field_put(field_offset, fval); | |
4055 } | |
4056 off += 4; | |
4057 break; | |
4058 | |
4059 case 'J': | |
4060 if (fid != NULL) { | |
4061 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4062 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4063 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4064 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4065 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4066 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4067 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4068 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4069 o->long_field_put(field_offset, lval); | |
4070 } | |
4071 off += 8; | |
4072 break; | |
4073 | |
4074 case 'D': | |
4075 if (fid != NULL) { | |
4076 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4077 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4078 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4079 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4080 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4081 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4082 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4083 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4084 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
4085 o->double_field_put(field_offset, dval); | |
4086 } | |
4087 off += 8; | |
4088 break; | |
4089 | |
4090 default: | |
4091 // Illegal typecode | |
4092 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4093 } | |
4094 } | |
4095 JVM_END | |
4096 | |
4097 | |
4098 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
4099 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
4100 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
4101 | |
4102 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
4103 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
4104 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
4105 oop o = JNIHandles::resolve(obj); | |
4106 | |
4107 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
4108 THROW(vmSymbols::java_lang_NullPointerException()); | |
4109 } | |
4110 | |
4111 jsize nfids = fids->length(); | |
4112 if (nfids == 0) return; | |
4113 | |
4114 if (tcodes->length() < nfids) { | |
4115 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
4116 } | |
4117 | |
4118 /* loop through fields, fetching values */ | |
4119 jsize off = 0; | |
4120 for (jsize i = 0; i < nfids; i++) { | |
4121 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
4122 if (fid == NULL) { | |
4123 THROW(vmSymbols::java_lang_NullPointerException()); | |
4124 } | |
4125 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4126 | |
4127 switch (tcodes->char_at(i)) { | |
4128 case 'Z': | |
4129 { | |
4130 jboolean val = o->bool_field(field_offset); | |
4131 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
4132 } | |
4133 break; | |
4134 | |
4135 case 'B': | |
4136 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
4137 break; | |
4138 | |
4139 case 'C': | |
4140 { | |
4141 jchar val = o->char_field(field_offset); | |
4142 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4143 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4144 } | |
4145 break; | |
4146 | |
4147 case 'S': | |
4148 { | |
4149 jshort val = o->short_field(field_offset); | |
4150 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4151 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4152 } | |
4153 break; | |
4154 | |
4155 case 'I': | |
4156 { | |
4157 jint val = o->int_field(field_offset); | |
4158 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4159 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4160 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4161 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4162 } | |
4163 break; | |
4164 | |
4165 case 'F': | |
4166 { | |
4167 jfloat fval = o->float_field(field_offset); | |
4168 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
4169 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
4170 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
4171 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
4172 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
4173 } | |
4174 break; | |
4175 | |
4176 case 'J': | |
4177 { | |
4178 jlong val = o->long_field(field_offset); | |
4179 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
4180 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
4181 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
4182 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
4183 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4184 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4185 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4186 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4187 } | |
4188 break; | |
4189 | |
4190 case 'D': | |
4191 { | |
4192 jdouble dval = o->double_field(field_offset); | |
4193 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
4194 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
4195 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
4196 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
4197 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
4198 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
4199 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
4200 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
4201 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4202 } | |
4203 break; | |
4204 | |
4205 default: | |
4206 // Illegal typecode | |
4207 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4208 } | |
4209 } | |
4210 JVM_END | |
4211 | |
4212 | |
4213 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4214 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
4215 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4216 // Security Note: |
4217 // The Java level wrapper will perform the necessary security check allowing | |
4218 // us to pass the NULL as the initiating class loader. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
4219 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
4220 |
0 | 4221 KlassHandle klass_handle(THREAD, klass); |
4222 // Check if we should initialize the class | |
4223 if (init && klass_handle->oop_is_instance()) { | |
4224 klass_handle->initialize(CHECK_NULL); | |
4225 } | |
4226 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4227 } | |
4228 | |
4229 | |
4230 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4231 | |
4232 #ifndef PRODUCT | |
4233 | |
4234 extern "C" { | |
4235 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4236 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4237 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4238 } | |
4239 | |
4240 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4241 JVMWrapper("JVM_AccessBoolVMFlag"); | |
12322
72b7e96c1922
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twisti
parents:
12264
diff
changeset
|
4242 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4243 JVM_END |
4244 | |
4245 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4246 JVMWrapper("JVM_AccessVMIntFlag"); | |
4247 intx v; | |
12322
72b7e96c1922
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twisti
parents:
12264
diff
changeset
|
4248 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4249 *value = (jint)v; |
4250 return result; | |
4251 JVM_END | |
4252 | |
4253 | |
4254 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4255 JVMWrapper("JVM_VMBreakPoint"); | |
4256 oop the_obj = JNIHandles::resolve(obj); | |
4257 BREAKPOINT; | |
4258 JVM_END | |
4259 | |
4260 | |
4261 #endif | |
4262 | |
4263 | |
4264 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4265 | |
4266 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4267 JVMWrapper("JVM_InvokeMethod"); | |
4268 Handle method_handle; | |
4269 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4270 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4271 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4272 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4273 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4274 jobject res = JNIHandles::make_local(env, result); | |
4275 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4276 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4277 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4278 if (java_lang_Class::is_primitive(ret_type)) { | |
4279 // Only for primitive type vm allocates memory for java object. | |
4280 // See box() method. | |
4281 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4282 } | |
4283 } | |
4284 return res; | |
4285 } else { | |
4286 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4287 } | |
4288 JVM_END | |
4289 | |
4290 | |
4291 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4292 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4293 oop constructor_mirror = JNIHandles::resolve(c); | |
4294 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4295 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4296 jobject res = JNIHandles::make_local(env, result); | |
4297 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4298 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4299 } | |
4300 return res; | |
4301 JVM_END | |
4302 | |
4303 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4304 | |
4305 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4306 JVMWrapper("JVM_SupportsCX8"); | |
4307 return VM_Version::supports_cx8(); | |
4308 JVM_END | |
4309 | |
4310 | |
4311 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4312 JVMWrapper("JVM_CX8Field"); | |
4313 jlong res; | |
4314 oop o = JNIHandles::resolve(obj); | |
4315 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4316 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4317 | |
4318 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4319 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4320 | |
4321 return res == oldVal; | |
4322 JVM_END | |
4323 | |
116
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4324 // DTrace /////////////////////////////////////////////////////////////////// |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
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4325 |
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4326 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4327 JVMWrapper("JVM_DTraceGetVersion"); |
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4328 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4329 JVM_END |
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4330 |
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4331 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4332 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4333 JVM_DTraceProvider* providers)) |
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4334 JVMWrapper("JVM_DTraceActivate"); |
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4335 return DTraceJSDT::activate( |
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4336 version, module_name, providers_count, providers, CHECK_0); |
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4337 JVM_END |
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4338 |
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4339 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4340 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4341 return DTraceJSDT::is_probe_enabled(method); |
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4342 JVM_END |
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4343 |
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4344 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4345 JVMWrapper("JVM_DTraceDispose"); |
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4346 DTraceJSDT::dispose(handle); |
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4347 JVM_END |
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4348 |
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4349 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4350 JVMWrapper("JVM_DTraceIsSupported"); |
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4351 return DTraceJSDT::is_supported(); |
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4352 JVM_END |
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4353 |
0 | 4354 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4355 // jvmti agent threads, and JNI attaching threads are skipped) | |
4356 // See CR 6404306 regarding JNI attaching threads | |
4357 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4358 ResourceMark rm(THREAD); | |
4359 ThreadsListEnumerator tle(THREAD, false, false); | |
4360 JvmtiVMObjectAllocEventCollector oam; | |
4361 | |
4362 int num_threads = tle.num_threads(); | |
1142 | 4363 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4364 objArrayHandle threads_ah(THREAD, r); |
4365 | |
4366 for (int i = 0; i < num_threads; i++) { | |
4367 Handle h = tle.get_threadObj(i); | |
4368 threads_ah->obj_at_put(i, h()); | |
4369 } | |
4370 | |
4371 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4372 JVM_END | |
4373 | |
4374 | |
4375 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4376 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4377 // the corresponding entry in the given threads array | |
4378 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4379 JVMWrapper("JVM_DumpThreads"); | |
4380 JvmtiVMObjectAllocEventCollector oam; | |
4381 | |
4382 // Check if threads is null | |
4383 if (threads == NULL) { | |
4384 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4385 } | |
4386 | |
4387 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4388 objArrayHandle ah(THREAD, a); | |
4389 int num_threads = ah->length(); | |
4390 // check if threads is non-empty array | |
4391 if (num_threads == 0) { | |
4392 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4393 } | |
4394 | |
4395 // check if threads is not an array of objects of Thread class | |
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4396 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4397 if (k != SystemDictionary::Thread_klass()) { |
0 | 4398 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4399 } | |
4400 | |
4401 ResourceMark rm(THREAD); | |
4402 | |
4403 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4404 for (int i = 0; i < num_threads; i++) { | |
4405 oop thread_obj = ah->obj_at(i); | |
4406 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4407 thread_handle_array->append(h); | |
4408 } | |
4409 | |
4410 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4411 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4412 | |
4413 JVM_END | |
4414 | |
4415 // JVM monitoring and management support | |
4416 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4417 return Management::get_jmm_interface(version); | |
4418 JVM_END | |
4419 | |
4420 // com.sun.tools.attach.VirtualMachine agent properties support | |
4421 // | |
4422 // Initialize the agent properties with the properties maintained in the VM | |
4423 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4424 JVMWrapper("JVM_InitAgentProperties"); | |
4425 ResourceMark rm; | |
4426 | |
4427 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4428 | |
4429 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4430 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4431 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4432 return properties; | |
4433 JVM_END | |
4434 | |
4435 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4436 { | |
4437 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4438 JvmtiVMObjectAllocEventCollector oam; | |
4439 | |
4440 if (ofClass == NULL) { | |
4441 return NULL; | |
4442 } | |
4443 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4444 // Special handling for primitive objects | |
4445 if (java_lang_Class::is_primitive(mirror())) { | |
4446 return NULL; | |
4447 } | |
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4448 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4449 if (!k->oop_is_instance()) { |
0 | 4450 return NULL; |
4451 } | |
4452 instanceKlassHandle ik_h(THREAD, k); | |
4453 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4454 if (encl_method_class_idx == 0) { | |
4455 return NULL; | |
4456 } | |
1142 | 4457 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4458 objArrayHandle dest(THREAD, dest_o); |
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4459 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4460 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4461 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4462 if (encl_method_method_idx != 0) { | |
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4463 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4464 extract_low_short_from_int( |
4465 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4466 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4467 dest->obj_at_put(1, str()); | |
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4468 sym = ik_h->constants()->symbol_at( |
0 | 4469 extract_high_short_from_int( |
4470 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4471 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4472 dest->obj_at_put(2, str()); | |
4473 } | |
4474 return (jobjectArray) JNIHandles::make_local(dest()); | |
4475 } | |
4476 JVM_END | |
4477 | |
4478 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4479 jint javaThreadState)) | |
4480 { | |
4481 // If new thread states are added in future JDK and VM versions, | |
4482 // this should check if the JDK version is compatible with thread | |
4483 // states supported by the VM. Return NULL if not compatible. | |
4484 // | |
4485 // This function must map the VM java_lang_Thread::ThreadStatus | |
4486 // to the Java thread state that the JDK supports. | |
4487 // | |
4488 | |
4489 typeArrayHandle values_h; | |
4490 switch (javaThreadState) { | |
4491 case JAVA_THREAD_STATE_NEW : { | |
4492 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4493 values_h = typeArrayHandle(THREAD, r); | |
4494 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4495 break; | |
4496 } | |
4497 case JAVA_THREAD_STATE_RUNNABLE : { | |
4498 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4499 values_h = typeArrayHandle(THREAD, r); | |
4500 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4501 break; | |
4502 } | |
4503 case JAVA_THREAD_STATE_BLOCKED : { | |
4504 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4505 values_h = typeArrayHandle(THREAD, r); | |
4506 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4507 break; | |
4508 } | |
4509 case JAVA_THREAD_STATE_WAITING : { | |
4510 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4511 values_h = typeArrayHandle(THREAD, r); | |
4512 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4513 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4514 break; | |
4515 } | |
4516 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4517 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4518 values_h = typeArrayHandle(THREAD, r); | |
4519 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4520 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4521 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4522 break; | |
4523 } | |
4524 case JAVA_THREAD_STATE_TERMINATED : { | |
4525 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4526 values_h = typeArrayHandle(THREAD, r); | |
4527 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4528 break; | |
4529 } | |
4530 default: | |
4531 // Unknown state - probably incompatible JDK version | |
4532 return NULL; | |
4533 } | |
4534 | |
4535 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4536 } | |
4537 JVM_END | |
4538 | |
4539 | |
4540 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4541 jint javaThreadState, | |
4542 jintArray values)) | |
4543 { | |
4544 // If new thread states are added in future JDK and VM versions, | |
4545 // this should check if the JDK version is compatible with thread | |
4546 // states supported by the VM. Return NULL if not compatible. | |
4547 // | |
4548 // This function must map the VM java_lang_Thread::ThreadStatus | |
4549 // to the Java thread state that the JDK supports. | |
4550 // | |
4551 | |
4552 ResourceMark rm; | |
4553 | |
4554 // Check if threads is null | |
4555 if (values == NULL) { | |
4556 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4557 } | |
4558 | |
4559 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4560 typeArrayHandle values_h(THREAD, v); | |
4561 | |
4562 objArrayHandle names_h; | |
4563 switch (javaThreadState) { | |
4564 case JAVA_THREAD_STATE_NEW : { | |
4565 assert(values_h->length() == 1 && | |
4566 values_h->int_at(0) == java_lang_Thread::NEW, | |
4567 "Invalid threadStatus value"); | |
4568 | |
1142 | 4569 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4570 1, /* only 1 substate */ |
4571 CHECK_NULL); | |
4572 names_h = objArrayHandle(THREAD, r); | |
4573 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4574 names_h->obj_at_put(0, name()); | |
4575 break; | |
4576 } | |
4577 case JAVA_THREAD_STATE_RUNNABLE : { | |
4578 assert(values_h->length() == 1 && | |
4579 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4580 "Invalid threadStatus value"); | |
4581 | |
1142 | 4582 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4583 1, /* only 1 substate */ |
4584 CHECK_NULL); | |
4585 names_h = objArrayHandle(THREAD, r); | |
4586 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4587 names_h->obj_at_put(0, name()); | |
4588 break; | |
4589 } | |
4590 case JAVA_THREAD_STATE_BLOCKED : { | |
4591 assert(values_h->length() == 1 && | |
4592 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4593 "Invalid threadStatus value"); | |
4594 | |
1142 | 4595 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4596 1, /* only 1 substate */ |
4597 CHECK_NULL); | |
4598 names_h = objArrayHandle(THREAD, r); | |
4599 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4600 names_h->obj_at_put(0, name()); | |
4601 break; | |
4602 } | |
4603 case JAVA_THREAD_STATE_WAITING : { | |
4604 assert(values_h->length() == 2 && | |
4605 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4606 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4607 "Invalid threadStatus value"); | |
1142 | 4608 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4609 2, /* number of substates */ |
4610 CHECK_NULL); | |
4611 names_h = objArrayHandle(THREAD, r); | |
4612 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4613 CHECK_NULL); | |
4614 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4615 CHECK_NULL); | |
4616 names_h->obj_at_put(0, name0()); | |
4617 names_h->obj_at_put(1, name1()); | |
4618 break; | |
4619 } | |
4620 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4621 assert(values_h->length() == 3 && | |
4622 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4623 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4624 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4625 "Invalid threadStatus value"); | |
1142 | 4626 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4627 3, /* number of substates */ |
4628 CHECK_NULL); | |
4629 names_h = objArrayHandle(THREAD, r); | |
4630 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4631 CHECK_NULL); | |
4632 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4633 CHECK_NULL); | |
4634 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4635 CHECK_NULL); | |
4636 names_h->obj_at_put(0, name0()); | |
4637 names_h->obj_at_put(1, name1()); | |
4638 names_h->obj_at_put(2, name2()); | |
4639 break; | |
4640 } | |
4641 case JAVA_THREAD_STATE_TERMINATED : { | |
4642 assert(values_h->length() == 1 && | |
4643 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4644 "Invalid threadStatus value"); | |
1142 | 4645 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4646 1, /* only 1 substate */ |
4647 CHECK_NULL); | |
4648 names_h = objArrayHandle(THREAD, r); | |
4649 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4650 names_h->obj_at_put(0, name()); | |
4651 break; | |
4652 } | |
4653 default: | |
4654 // Unknown state - probably incompatible JDK version | |
4655 return NULL; | |
4656 } | |
4657 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4658 } | |
4659 JVM_END | |
4660 | |
4661 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4662 { | |
4663 memset(info, 0, sizeof(info_size)); | |
4664 | |
4665 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4666 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4667 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4668 | |
4669 // when we add a new capability in the jvm_version_info struct, we should also | |
4670 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4671 // counter defined in runtimeService.cpp. | |
4672 info->is_attachable = AttachListener::is_attach_supported(); | |
4673 } | |
4674 JVM_END |