Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 7521:d4bc143c575a
replaced use of <br> in javadoc with <p>
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 22 Jan 2013 21:06:57 +0100 |
parents | 989155e2d07a |
children | 3ac7d10a6572 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
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" | |
33 #include "memory/oopFactory.hpp" | |
34 #include "memory/universe.inline.hpp" | |
3938 | 35 #include "oops/fieldStreams.hpp" |
1972 | 36 #include "oops/instanceKlass.hpp" |
37 #include "oops/objArrayKlass.hpp" | |
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38 #include "oops/method.hpp" |
1972 | 39 #include "prims/jvm.h" |
40 #include "prims/jvm_misc.hpp" | |
41 #include "prims/jvmtiExport.hpp" | |
42 #include "prims/jvmtiThreadState.hpp" | |
43 #include "prims/nativeLookup.hpp" | |
44 #include "prims/privilegedStack.hpp" | |
45 #include "runtime/arguments.hpp" | |
46 #include "runtime/dtraceJSDT.hpp" | |
47 #include "runtime/handles.inline.hpp" | |
48 #include "runtime/init.hpp" | |
49 #include "runtime/interfaceSupport.hpp" | |
50 #include "runtime/java.hpp" | |
51 #include "runtime/javaCalls.hpp" | |
52 #include "runtime/jfieldIDWorkaround.hpp" | |
53 #include "runtime/os.hpp" | |
54 #include "runtime/perfData.hpp" | |
55 #include "runtime/reflection.hpp" | |
56 #include "runtime/vframe.hpp" | |
57 #include "runtime/vm_operations.hpp" | |
58 #include "services/attachListener.hpp" | |
59 #include "services/management.hpp" | |
60 #include "services/threadService.hpp" | |
61 #include "utilities/copy.hpp" | |
62 #include "utilities/defaultStream.hpp" | |
63 #include "utilities/dtrace.hpp" | |
64 #include "utilities/events.hpp" | |
65 #include "utilities/histogram.hpp" | |
66 #include "utilities/top.hpp" | |
67 #include "utilities/utf8.hpp" | |
68 #ifdef TARGET_OS_FAMILY_linux | |
69 # include "jvm_linux.h" | |
70 #endif | |
71 #ifdef TARGET_OS_FAMILY_solaris | |
72 # include "jvm_solaris.h" | |
73 #endif | |
74 #ifdef TARGET_OS_FAMILY_windows | |
75 # include "jvm_windows.h" | |
76 #endif | |
3960 | 77 #ifdef TARGET_OS_FAMILY_bsd |
78 # include "jvm_bsd.h" | |
79 #endif | |
1972 | 80 |
0 | 81 #include <errno.h> |
82 | |
4006 | 83 #ifndef USDT2 |
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84 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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85 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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86 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 87 #endif /* !USDT2 */ |
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88 |
0 | 89 /* |
90 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
91 such ctors and calls MUST NOT come between an oop declaration/init and its | |
92 usage because if objects are move this may cause various memory stomps, bus | |
93 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
94 failures": | |
95 | |
96 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
97 JVMWrapper("JVM_GetClassDeclaredFields"); | |
98 | |
99 // Object address to be held directly in mirror & not visible to GC | |
100 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
101 | |
102 // If this ctor can hit a safepoint, moving objects around, then | |
103 ComplexConstructor foo; | |
104 | |
105 // Boom! mirror may point to JUNK instead of the intended object | |
106 (some dereference of mirror) | |
107 | |
108 // Here's another call that may block for GC, making mirror stale | |
109 MutexLocker ml(some_lock); | |
110 | |
111 // And here's an initializer that can result in a stale oop | |
112 // all in one step. | |
113 oop o = call_that_can_throw_exception(TRAPS); | |
114 | |
115 | |
116 The solution is to keep the oop declaration BELOW the ctor or function | |
117 call that might cause a GC, do another resolve to reassign the oop, or | |
118 consider use of a Handle instead of an oop so there is immunity from object | |
119 motion. But note that the "QUICK" entries below do not have a handlemark | |
120 and thus can only support use of handles passed in. | |
121 */ | |
122 | |
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123 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 124 ResourceMark rm; |
125 int line_number = -1; | |
126 const char * source_file = NULL; | |
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127 const char * trace = "explicit"; |
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128 InstanceKlass* caller = NULL; |
0 | 129 JavaThread* jthread = JavaThread::current(); |
130 if (jthread->has_last_Java_frame()) { | |
131 vframeStream vfst(jthread); | |
132 | |
133 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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134 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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135 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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136 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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137 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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138 |
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139 Method* last_caller = NULL; |
0 | 140 |
141 while (!vfst.at_end()) { | |
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142 Method* m = vfst.method(); |
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143 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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144 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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145 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 146 break; |
147 } | |
148 last_caller = m; | |
149 vfst.next(); | |
150 } | |
151 // if this is called from Class.forName0 and that is called from Class.forName, | |
152 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
153 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
154 bool found_it = false; | |
155 if (!vfst.at_end() && | |
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156 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 157 vfst.method()->name() == vmSymbols::forName0_name()) { |
158 vfst.next(); | |
159 if (!vfst.at_end() && | |
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160 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 161 vfst.method()->name() == vmSymbols::forName_name()) { |
162 vfst.next(); | |
163 found_it = true; | |
164 } | |
165 } else if (last_caller != NULL && | |
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166 last_caller->method_holder()->name() == |
0 | 167 vmSymbols::java_lang_ClassLoader() && |
168 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
169 last_caller->name() == vmSymbols::loadClass_name())) { | |
170 found_it = true; | |
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171 } else if (!vfst.at_end()) { |
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172 if (vfst.method()->is_native()) { |
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173 // JNI call |
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174 found_it = true; |
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175 } |
0 | 176 } |
177 if (found_it && !vfst.at_end()) { | |
178 // found the caller | |
179 caller = vfst.method()->method_holder(); | |
180 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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181 if (line_number == -1) { |
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182 // show method name if it's a native method |
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183 trace = vfst.method()->name_and_sig_as_C_string(); |
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184 } |
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185 Symbol* s = caller->source_file_name(); |
0 | 186 if (s != NULL) { |
187 source_file = s->as_C_string(); | |
188 } | |
189 } | |
190 } | |
191 if (caller != NULL) { | |
192 if (to_class != caller) { | |
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193 const char * from = caller->external_name(); |
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194 const char * to = to_class->external_name(); |
0 | 195 // print in a single call to reduce interleaving between threads |
196 if (source_file != NULL) { | |
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197 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 198 } else { |
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199 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 200 } |
201 } | |
202 } | |
203 } | |
204 | |
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205 void trace_class_resolution(Klass* to_class) { |
0 | 206 EXCEPTION_MARK; |
207 trace_class_resolution_impl(to_class, THREAD); | |
208 if (HAS_PENDING_EXCEPTION) { | |
209 CLEAR_PENDING_EXCEPTION; | |
210 } | |
211 } | |
212 | |
213 // Wrapper to trace JVM functions | |
214 | |
215 #ifdef ASSERT | |
216 class JVMTraceWrapper : public StackObj { | |
217 public: | |
218 JVMTraceWrapper(const char* format, ...) { | |
219 if (TraceJVMCalls) { | |
220 va_list ap; | |
221 va_start(ap, format); | |
222 tty->print("JVM "); | |
223 tty->vprint_cr(format, ap); | |
224 va_end(ap); | |
225 } | |
226 } | |
227 }; | |
228 | |
229 Histogram* JVMHistogram; | |
230 volatile jint JVMHistogram_lock = 0; | |
231 | |
232 class JVMHistogramElement : public HistogramElement { | |
233 public: | |
234 JVMHistogramElement(const char* name); | |
235 }; | |
236 | |
237 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
238 _name = elementName; | |
239 uintx count = 0; | |
240 | |
241 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
242 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
243 count +=1; | |
244 if ( (WarnOnStalledSpinLock > 0) | |
245 && (count % WarnOnStalledSpinLock == 0)) { | |
246 warning("JVMHistogram_lock seems to be stalled"); | |
247 } | |
248 } | |
249 } | |
250 | |
251 if(JVMHistogram == NULL) | |
252 JVMHistogram = new Histogram("JVM Call Counts",100); | |
253 | |
254 JVMHistogram->add_element(this); | |
255 Atomic::dec(&JVMHistogram_lock); | |
256 } | |
257 | |
258 #define JVMCountWrapper(arg) \ | |
259 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
260 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
261 | |
262 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
263 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
264 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
265 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
266 #else | |
267 #define JVMWrapper(arg1) | |
268 #define JVMWrapper2(arg1, arg2) | |
269 #define JVMWrapper3(arg1, arg2, arg3) | |
270 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
271 #endif | |
272 | |
273 | |
274 // Interface version ///////////////////////////////////////////////////////////////////// | |
275 | |
276 | |
277 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
278 return JVM_INTERFACE_VERSION; | |
279 JVM_END | |
280 | |
281 | |
282 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
283 | |
284 | |
285 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
286 JVMWrapper("JVM_CurrentTimeMillis"); | |
287 return os::javaTimeMillis(); | |
288 JVM_END | |
289 | |
290 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
291 JVMWrapper("JVM_NanoTime"); | |
292 return os::javaTimeNanos(); | |
293 JVM_END | |
294 | |
295 | |
296 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
297 jobject dst, jint dst_pos, jint length)) | |
298 JVMWrapper("JVM_ArrayCopy"); | |
299 // Check if we have null pointers | |
300 if (src == NULL || dst == NULL) { | |
301 THROW(vmSymbols::java_lang_NullPointerException()); | |
302 } | |
303 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
304 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
305 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
306 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
307 // Do copy | |
6983 | 308 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 309 JVM_END |
310 | |
311 | |
312 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
313 JavaValue r(T_OBJECT); | |
314 // public synchronized Object put(Object key, Object value); | |
315 HandleMark hm(THREAD); | |
316 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
317 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
318 JavaCalls::call_virtual(&r, | |
319 props, | |
1142 | 320 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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321 vmSymbols::put_name(), |
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322 vmSymbols::object_object_object_signature(), |
0 | 323 key_str, |
324 value_str, | |
325 THREAD); | |
326 } | |
327 | |
328 | |
329 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
330 | |
331 | |
332 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
333 JVMWrapper("JVM_InitProperties"); | |
334 ResourceMark rm; | |
335 | |
336 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
337 | |
338 // System property list includes both user set via -D option and | |
339 // jvm system specific properties. | |
340 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
341 PUTPROP(props, p->key(), p->value()); | |
342 } | |
343 | |
344 // Convert the -XX:MaxDirectMemorySize= command line flag | |
345 // to the sun.nio.MaxDirectMemorySize property. | |
346 // Do this after setting user properties to prevent people | |
347 // from setting the value with a -D option, as requested. | |
348 { | |
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349 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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350 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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351 } else { |
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352 char as_chars[256]; |
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353 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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354 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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355 } |
0 | 356 } |
357 | |
358 // JVM monitoring and management support | |
359 // Add the sun.management.compiler property for the compiler's name | |
360 { | |
361 #undef CSIZE | |
362 #if defined(_LP64) || defined(_WIN64) | |
363 #define CSIZE "64-Bit " | |
364 #else | |
365 #define CSIZE | |
366 #endif // 64bit | |
367 | |
368 #ifdef TIERED | |
369 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
370 #else | |
371 #if defined(COMPILER1) | |
372 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
373 #elif defined(COMPILER2) | |
374 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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375 #elif defined(GRAAL) |
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376 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
0 | 377 #else |
378 const char* compiler_name = ""; | |
379 #endif // compilers | |
380 #endif // TIERED | |
381 | |
382 if (*compiler_name != '\0' && | |
383 (Arguments::mode() != Arguments::_int)) { | |
384 PUTPROP(props, "sun.management.compiler", compiler_name); | |
385 } | |
386 } | |
387 | |
388 return properties; | |
389 JVM_END | |
390 | |
391 | |
392 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
393 | |
394 extern volatile jint vm_created; | |
395 | |
396 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
397 if (vm_created != 0 && (code == 0)) { | |
398 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
399 Universe::run_finalizers_on_exit(); | |
400 } | |
401 before_exit(thread); | |
402 vm_exit(code); | |
403 JVM_END | |
404 | |
405 | |
406 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
407 before_exit(thread); | |
408 vm_exit(code); | |
409 JVM_END | |
410 | |
411 | |
412 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
413 register_on_exit_function(func); | |
414 JVM_END | |
415 | |
416 | |
417 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
418 JVMWrapper("JVM_GC"); | |
419 if (!DisableExplicitGC) { | |
420 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
421 } | |
422 JVM_END | |
423 | |
424 | |
425 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
426 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
427 return Universe::heap()->millis_since_last_gc(); | |
428 JVM_END | |
429 | |
430 | |
431 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
432 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
433 JVM_END | |
434 | |
435 | |
436 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
437 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
438 JVM_END | |
439 | |
440 static inline jlong convert_size_t_to_jlong(size_t val) { | |
441 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
442 NOT_LP64 (return (jlong)val;) | |
443 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
444 } | |
445 | |
446 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
447 JVMWrapper("JVM_TotalMemory"); | |
448 size_t n = Universe::heap()->capacity(); | |
449 return convert_size_t_to_jlong(n); | |
450 JVM_END | |
451 | |
452 | |
453 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
454 JVMWrapper("JVM_FreeMemory"); | |
455 CollectedHeap* ch = Universe::heap(); | |
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456 size_t n; |
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457 { |
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458 MutexLocker x(Heap_lock); |
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459 n = ch->capacity() - ch->used(); |
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460 } |
0 | 461 return convert_size_t_to_jlong(n); |
462 JVM_END | |
463 | |
464 | |
465 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
466 JVMWrapper("JVM_MaxMemory"); | |
467 size_t n = Universe::heap()->max_capacity(); | |
468 return convert_size_t_to_jlong(n); | |
469 JVM_END | |
470 | |
471 | |
472 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
473 JVMWrapper("JVM_ActiveProcessorCount"); | |
474 return os::active_processor_count(); | |
475 JVM_END | |
476 | |
477 | |
478 | |
479 // java.lang.Throwable ////////////////////////////////////////////////////// | |
480 | |
481 | |
482 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
483 JVMWrapper("JVM_FillInStackTrace"); | |
484 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
485 java_lang_Throwable::fill_in_stack_trace(exception); | |
486 JVM_END | |
487 | |
488 | |
489 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
490 JVMWrapper("JVM_PrintStackTrace"); | |
491 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
492 oop exception = JNIHandles::resolve_non_null(receiver); | |
493 oop stream = JNIHandles::resolve_non_null(printable); | |
494 java_lang_Throwable::print_stack_trace(exception, stream); | |
495 JVM_END | |
496 | |
497 | |
498 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
499 JVMWrapper("JVM_GetStackTraceDepth"); | |
500 oop exception = JNIHandles::resolve(throwable); | |
501 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
502 JVM_END | |
503 | |
504 | |
505 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
506 JVMWrapper("JVM_GetStackTraceElement"); | |
507 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
508 oop exception = JNIHandles::resolve(throwable); | |
509 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
510 return JNIHandles::make_local(env, element); | |
511 JVM_END | |
512 | |
513 | |
514 // java.lang.Object /////////////////////////////////////////////// | |
515 | |
516 | |
517 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
518 JVMWrapper("JVM_IHashCode"); | |
519 // as implemented in the classic virtual machine; return 0 if object is NULL | |
520 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
521 JVM_END | |
522 | |
523 | |
524 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
525 JVMWrapper("JVM_MonitorWait"); | |
526 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
527 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
528 if (JvmtiExport::should_post_monitor_wait()) { | |
529 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
530 } | |
531 ObjectSynchronizer::wait(obj, ms, CHECK); | |
532 JVM_END | |
533 | |
534 | |
535 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
536 JVMWrapper("JVM_MonitorNotify"); | |
537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
538 ObjectSynchronizer::notify(obj, CHECK); | |
539 JVM_END | |
540 | |
541 | |
542 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
543 JVMWrapper("JVM_MonitorNotifyAll"); | |
544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
545 ObjectSynchronizer::notifyall(obj, CHECK); | |
546 JVM_END | |
547 | |
548 | |
549 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
550 JVMWrapper("JVM_Clone"); | |
551 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
552 const KlassHandle klass (THREAD, obj->klass()); | |
553 JvmtiVMObjectAllocEventCollector oam; | |
554 | |
555 #ifdef ASSERT | |
556 // Just checking that the cloneable flag is set correct | |
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557 if (obj->is_array()) { |
0 | 558 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
559 } else { | |
560 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 561 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 562 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
563 } | |
564 #endif | |
565 | |
566 // Check if class of obj supports the Cloneable interface. | |
567 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
568 if (!klass->is_cloneable()) { | |
569 ResourceMark rm(THREAD); | |
570 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
571 } | |
572 | |
573 // Make shallow object copy | |
574 const int size = obj->size(); | |
575 oop new_obj = NULL; | |
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576 if (obj->is_array()) { |
0 | 577 const int length = ((arrayOop)obj())->length(); |
578 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
579 } else { | |
580 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
581 } | |
582 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
583 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
584 // be suspended in the middle of copying the pointer and end up with parts | |
585 // of two different pointers in the field. Subsequent dereferences will crash. | |
586 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
587 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
588 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
589 // The same is true of StubRoutines::object_copy and the various oop_copy | |
590 // variants, and of the code generated by the inline_native_clone intrinsic. | |
591 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
592 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
593 (size_t)align_object_size(size) / HeapWordsPerLong); | |
594 // Clear the header | |
595 new_obj->init_mark(); | |
596 | |
597 // Store check (mark entire object and let gc sort it out) | |
598 BarrierSet* bs = Universe::heap()->barrier_set(); | |
599 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
600 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
601 | |
602 // Caution: this involves a java upcall, so the clone should be | |
603 // "gc-robust" by this stage. | |
604 if (klass->has_finalizer()) { | |
605 assert(obj->is_instance(), "should be instanceOop"); | |
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606 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 607 } |
608 | |
609 return JNIHandles::make_local(env, oop(new_obj)); | |
610 JVM_END | |
611 | |
612 // java.lang.Compiler //////////////////////////////////////////////////// | |
613 | |
614 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
615 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
616 // functions are all silently ignored unless JVM warnings are printed. | |
617 | |
618 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
619 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
620 JVM_END | |
621 | |
622 | |
623 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
624 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
625 return JNI_FALSE; | |
626 JVM_END | |
627 | |
628 | |
629 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
630 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
631 return JNI_FALSE; | |
632 JVM_END | |
633 | |
634 | |
635 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
636 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
637 return JNI_FALSE; | |
638 JVM_END | |
639 | |
640 | |
641 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
642 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
643 return NULL; | |
644 JVM_END | |
645 | |
646 | |
647 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
648 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
649 JVM_END | |
650 | |
651 | |
652 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
653 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
654 JVM_END | |
655 | |
656 | |
657 | |
658 // Error message support ////////////////////////////////////////////////////// | |
659 | |
660 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
661 JVMWrapper("JVM_GetLastErrorString"); | |
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662 return (jint)os::lasterror(buf, len); |
0 | 663 JVM_END |
664 | |
665 | |
666 // java.io.File /////////////////////////////////////////////////////////////// | |
667 | |
668 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
669 JVMWrapper2("JVM_NativePath (%s)", path); | |
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670 return os::native_path(path); |
0 | 671 JVM_END |
672 | |
673 | |
674 // Misc. class handling /////////////////////////////////////////////////////////// | |
675 | |
676 | |
677 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
678 JVMWrapper("JVM_GetCallerClass"); | |
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679 Klass* k = thread->security_get_caller_class(depth); |
6983 | 680 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 681 JVM_END |
682 | |
683 | |
684 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
685 JVMWrapper("JVM_FindPrimitiveClass"); | |
686 oop mirror = NULL; | |
687 BasicType t = name2type(utf); | |
688 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
689 mirror = Universe::java_mirror(t); | |
690 } | |
691 if (mirror == NULL) { | |
692 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
693 } else { | |
694 return (jclass) JNIHandles::make_local(env, mirror); | |
695 } | |
696 JVM_END | |
697 | |
698 | |
699 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
700 JVMWrapper("JVM_ResolveClass"); | |
701 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
702 JVM_END | |
703 | |
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704 |
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705 // Returns a class loaded by the bootstrap class loader; or null |
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706 // if not found. ClassNotFoundException is not thrown. |
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707 // |
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708 // Rationale behind JVM_FindClassFromBootLoader |
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709 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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710 // b> because of (a) java.dll has a direct dependecy on the unexported |
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711 // private symbol "_JVM_FindClassFromClassLoader@20". |
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712 // c> the launcher cannot use the private symbol as it dynamically opens |
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713 // the entry point, so if something changes, the launcher will fail |
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714 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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715 // stable exported interface. |
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716 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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717 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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718 // JVM_FindClassFromClassLoader and will not be backward compatible |
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719 // with older JDKs. |
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720 // Thus a public/stable exported entry point is the right solution, |
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721 // public here means public in linker semantics, and is exported only |
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722 // to the JDK, and is not intended to be a public API. |
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723 |
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724 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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725 const char* name)) |
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726 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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727 |
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728 // Java libraries should ensure that name is never null... |
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729 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
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730 // It's impossible to create this class; the name cannot fit |
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731 // into the constant pool. |
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732 return NULL; |
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733 } |
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734 |
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735 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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736 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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737 if (k == NULL) { |
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738 return NULL; |
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739 } |
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740 |
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741 if (TraceClassResolution) { |
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742 trace_class_resolution(k); |
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743 } |
6983 | 744 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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745 JVM_END |
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746 |
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747 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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748 jboolean init, jobject loader, |
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749 jboolean throwError)) |
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750 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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751 throwError ? "error" : "exception"); |
388 | 752 // Java libraries should ensure that name is never null... |
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753 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 754 // It's impossible to create this class; the name cannot fit |
755 // into the constant pool. | |
756 if (throwError) { | |
757 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
758 } else { | |
759 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
760 } | |
761 } | |
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762 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 763 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
764 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
765 Handle(), throwError, THREAD); | |
766 | |
767 if (TraceClassResolution && result != NULL) { | |
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768 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 769 } |
770 return result; | |
0 | 771 JVM_END |
772 | |
773 | |
774 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
775 jboolean init, jclass from)) | |
776 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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777 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 778 // It's impossible to create this class; the name cannot fit |
779 // into the constant pool. | |
780 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
781 } | |
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782 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 783 oop from_class_oop = JNIHandles::resolve(from); |
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784 Klass* from_class = (from_class_oop == NULL) |
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785 ? (Klass*)NULL |
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786 : java_lang_Class::as_Klass(from_class_oop); |
0 | 787 oop class_loader = NULL; |
788 oop protection_domain = NULL; | |
789 if (from_class != NULL) { | |
6983 | 790 class_loader = from_class->class_loader(); |
791 protection_domain = from_class->protection_domain(); | |
0 | 792 } |
793 Handle h_loader(THREAD, class_loader); | |
794 Handle h_prot (THREAD, protection_domain); | |
795 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
796 h_prot, true, thread); | |
797 | |
798 if (TraceClassResolution && result != NULL) { | |
799 // this function is generally only used for class loading during verification. | |
800 ResourceMark rm; | |
801 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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802 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 803 const char * from_name = from_class->external_name(); |
0 | 804 |
805 oop mirror = JNIHandles::resolve_non_null(result); | |
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806 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 807 const char * to = to_class->external_name(); |
0 | 808 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
809 } | |
810 | |
811 return result; | |
812 JVM_END | |
813 | |
814 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
815 if (loader.is_null()) { | |
816 return; | |
817 } | |
818 | |
819 // check whether the current caller thread holds the lock or not. | |
820 // If not, increment the corresponding counter | |
821 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
822 ObjectSynchronizer::owner_self) { | |
823 counter->inc(); | |
824 } | |
825 } | |
826 | |
827 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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828 // and JVM_DefineClassWithSourceCond() |
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829 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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830 jobject loader, const jbyte *buf, |
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831 jsize len, jobject pd, const char *source, |
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832 jboolean verify, TRAPS) { |
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833 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 834 |
875
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835 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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836 JavaThread* jt = (JavaThread*) THREAD; |
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837 |
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838 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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839 ClassLoader::perf_define_appclass_selftime(), |
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840 ClassLoader::perf_define_appclasses(), |
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841 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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842 jt->get_thread_stat()->perf_timers_addr(), |
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843 PerfClassTraceTime::DEFINE_CLASS); |
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844 |
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845 if (UsePerfData) { |
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846 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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847 } |
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848 |
0 | 849 // Since exceptions can be thrown, class initialization can take place |
850 // if name is NULL no check for class name in .class stream has to be made. | |
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851 TempNewSymbol class_name = NULL; |
0 | 852 if (name != NULL) { |
853 const int str_len = (int)strlen(name); | |
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854 if (str_len > Symbol::max_length()) { |
0 | 855 // It's impossible to create this class; the name cannot fit |
856 // into the constant pool. | |
857 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
858 } | |
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859 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 860 } |
861 | |
862 ResourceMark rm(THREAD); | |
863 ClassFileStream st((u1*) buf, len, (char *)source); | |
864 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
865 if (UsePerfData) { | |
866 is_lock_held_by_thread(class_loader, | |
867 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
868 THREAD); | |
869 } | |
870 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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871 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 872 protection_domain, &st, |
973
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873 verify != 0, |
0 | 874 CHECK_NULL); |
875 | |
876 if (TraceClassResolution && k != NULL) { | |
877 trace_class_resolution(k); | |
878 } | |
879 | |
6983 | 880 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 881 } |
882 | |
883 | |
884 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
885 JVMWrapper2("JVM_DefineClass %s", name); | |
886 | |
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887 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 888 JVM_END |
889 | |
890 | |
891 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
892 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
893 | |
973
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894 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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895 JVM_END |
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896 |
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897 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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898 jobject loader, const jbyte *buf, |
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899 jsize len, jobject pd, |
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900 const char *source, jboolean verify)) |
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901 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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902 |
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903 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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904 JVM_END |
0 | 905 |
906 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
907 JVMWrapper("JVM_FindLoadedClass"); | |
908 ResourceMark rm(THREAD); | |
909 | |
910 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
911 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
912 | |
913 const char* str = java_lang_String::as_utf8_string(string()); | |
914 // Sanity check, don't expect null | |
915 if (str == NULL) return NULL; | |
916 | |
917 const int str_len = (int)strlen(str); | |
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918 if (str_len > Symbol::max_length()) { |
0 | 919 // It's impossible to create this class; the name cannot fit |
920 // into the constant pool. | |
921 return NULL; | |
922 } | |
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923 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 924 |
925 // Security Note: | |
926 // The Java level wrapper will perform the necessary security check allowing | |
927 // us to pass the NULL as the initiating class loader. | |
928 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
929 if (UsePerfData) { | |
930 is_lock_held_by_thread(h_loader, | |
931 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
932 THREAD); | |
933 } | |
934 | |
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935 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 936 h_loader, |
937 Handle(), | |
938 CHECK_NULL); | |
939 | |
940 return (k == NULL) ? NULL : | |
6983 | 941 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 942 JVM_END |
943 | |
944 | |
945 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
946 | |
947 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
948 assert (cls != NULL, "illegal class"); | |
949 JVMWrapper("JVM_GetClassName"); | |
950 JvmtiVMObjectAllocEventCollector oam; | |
951 ResourceMark rm(THREAD); | |
952 const char* name; | |
953 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
954 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
955 } else { | |
956 // Consider caching interned string in Klass | |
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957 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 958 assert(k->is_klass(), "just checking"); |
6983 | 959 name = k->external_name(); |
0 | 960 } |
961 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
962 return (jstring) JNIHandles::make_local(env, result); | |
963 JVM_END | |
964 | |
965 | |
966 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
967 JVMWrapper("JVM_GetClassInterfaces"); | |
968 JvmtiVMObjectAllocEventCollector oam; | |
969 oop mirror = JNIHandles::resolve_non_null(cls); | |
970 | |
971 // Special handling for primitive objects | |
972 if (java_lang_Class::is_primitive(mirror)) { | |
973 // Primitive objects does not have any interfaces | |
1142 | 974 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 975 return (jobjectArray) JNIHandles::make_local(env, r); |
976 } | |
977 | |
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978 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 979 // Figure size of result array |
980 int size; | |
981 if (klass->oop_is_instance()) { | |
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982 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 983 } else { |
984 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
985 size = 2; | |
986 } | |
987 | |
988 // Allocate result array | |
1142 | 989 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 990 objArrayHandle result (THREAD, r); |
991 // Fill in result | |
992 if (klass->oop_is_instance()) { | |
993 // Regular instance klass, fill in all local interfaces | |
994 for (int index = 0; index < size; index++) { | |
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995 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 996 result->obj_at_put(index, k->java_mirror()); |
0 | 997 } |
998 } else { | |
999 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1000 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1001 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1002 } |
1003 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1004 JVM_END | |
1005 | |
1006 | |
1007 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1008 JVMWrapper("JVM_GetClassLoader"); | |
1009 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1010 return NULL; | |
1011 } | |
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1012 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1013 oop loader = k->class_loader(); |
0 | 1014 return JNIHandles::make_local(env, loader); |
1015 JVM_END | |
1016 | |
1017 | |
1018 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1019 JVMWrapper("JVM_IsInterface"); | |
1020 oop mirror = JNIHandles::resolve_non_null(cls); | |
1021 if (java_lang_Class::is_primitive(mirror)) { | |
1022 return JNI_FALSE; | |
1023 } | |
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1024 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1025 jboolean result = k->is_interface(); |
1026 assert(!result || k->oop_is_instance(), | |
0 | 1027 "all interfaces are instance types"); |
1028 // The compiler intrinsic for isInterface tests the | |
1029 // Klass::_access_flags bits in the same way. | |
1030 return result; | |
1031 JVM_END | |
1032 | |
1033 | |
1034 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1035 JVMWrapper("JVM_GetClassSigners"); | |
1036 JvmtiVMObjectAllocEventCollector oam; | |
1037 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1038 // There are no signers for primitive types | |
1039 return NULL; | |
1040 } | |
1041 | |
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1042 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1043 objArrayOop signers = NULL; |
6983 | 1044 if (k->oop_is_instance()) { |
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1045 signers = InstanceKlass::cast(k)->signers(); |
0 | 1046 } |
1047 | |
1048 // If there are no signers set in the class, or if the class | |
1049 // is an array, return NULL. | |
1050 if (signers == NULL) return NULL; | |
1051 | |
1052 // copy of the signers array | |
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1053 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1054 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1055 for (int index = 0; index < signers->length(); index++) { | |
1056 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1057 } | |
1058 | |
1059 // return the copy | |
1060 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1061 JVM_END | |
1062 | |
1063 | |
1064 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1065 JVMWrapper("JVM_SetClassSigners"); | |
1066 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1067 // This call is ignored for primitive types and arrays. | |
1068 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1069 // be called with an array. Only the bootstrap loader creates arrays. | |
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1070 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1071 if (k->oop_is_instance()) { |
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1072 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
0 | 1073 } |
1074 } | |
1075 JVM_END | |
1076 | |
1077 | |
1078 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1079 JVMWrapper("JVM_GetProtectionDomain"); | |
1080 if (JNIHandles::resolve(cls) == NULL) { | |
1081 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1082 } | |
1083 | |
1084 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1085 // Primitive types does not have a protection domain. | |
1086 return NULL; | |
1087 } | |
1088 | |
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1089 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1090 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
0 | 1091 JVM_END |
1092 | |
1093 | |
1094 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1095 // still defined in core libraries as of 1.5. | |
1096 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1097 JVMWrapper("JVM_SetProtectionDomain"); | |
1098 if (JNIHandles::resolve(cls) == NULL) { | |
1099 THROW(vmSymbols::java_lang_NullPointerException()); | |
1100 } | |
1101 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1102 // Call is ignored for primitive types | |
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1103 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1104 |
1105 // cls won't be an array, as this called only from ClassLoader.defineClass | |
6983 | 1106 if (k->oop_is_instance()) { |
0 | 1107 oop pd = JNIHandles::resolve(protection_domain); |
1108 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1109 InstanceKlass::cast(k)->set_protection_domain(pd); |
0 | 1110 } |
1111 } | |
1112 JVM_END | |
1113 | |
1114 | |
1115 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1116 JVMWrapper("JVM_DoPrivileged"); | |
1117 | |
1118 if (action == NULL) { | |
1119 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1120 } | |
1121 | |
1122 // Stack allocated list of privileged stack elements | |
1123 PrivilegedElement pi; | |
1124 | |
1125 // Check that action object understands "Object run()" | |
1126 Handle object (THREAD, JNIHandles::resolve(action)); | |
1127 | |
1128 // get run() method | |
6983 | 1129 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1130 vmSymbols::run_method_name(), |
1131 vmSymbols::void_object_signature()); | |
1132 methodHandle m (THREAD, m_oop); | |
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1133 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1134 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1135 } | |
1136 | |
1137 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1138 vframeStream vfst(thread); | |
1139 vfst.security_get_caller_frame(1); | |
1140 | |
1141 if (!vfst.at_end()) { | |
1142 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1143 thread->set_privileged_stack_top(&pi); | |
1144 } | |
1145 | |
1146 | |
1147 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1148 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1149 Handle pending_exception; | |
1150 JavaValue result(T_OBJECT); | |
1151 JavaCallArguments args(object); | |
1152 JavaCalls::call(&result, m, &args, THREAD); | |
1153 | |
1154 // done with action, remove ourselves from the list | |
1155 if (!vfst.at_end()) { | |
1156 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1157 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1158 } | |
1159 | |
1160 if (HAS_PENDING_EXCEPTION) { | |
1161 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1162 CLEAR_PENDING_EXCEPTION; | |
1163 | |
1142 | 1164 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1165 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1166 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1167 JavaCallArguments args(pending_exception); | |
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1168 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1169 vmSymbols::exception_void_signature(), |
0 | 1170 &args); |
1171 } | |
1172 } | |
1173 | |
1174 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1175 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1176 JVM_END | |
1177 | |
1178 | |
1179 // Returns the inherited_access_control_context field of the running thread. | |
1180 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1181 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1182 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1183 return JNIHandles::make_local(env, result); | |
1184 JVM_END | |
1185 | |
1186 class RegisterArrayForGC { | |
1187 private: | |
1188 JavaThread *_thread; | |
1189 public: | |
1190 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1191 _thread = thread; | |
1192 _thread->register_array_for_gc(array); | |
1193 } | |
1194 | |
1195 ~RegisterArrayForGC() { | |
1196 _thread->register_array_for_gc(NULL); | |
1197 } | |
1198 }; | |
1199 | |
1200 | |
1201 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1202 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1203 if (!UsePrivilegedStack) return NULL; | |
1204 | |
1205 ResourceMark rm(THREAD); | |
1206 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1207 JvmtiVMObjectAllocEventCollector oam; | |
1208 | |
1209 // count the protection domains on the execution stack. We collapse | |
1210 // duplicate consecutive protection domains into a single one, as | |
1211 // well as stopping when we hit a privileged frame. | |
1212 | |
1213 // Use vframeStream to iterate through Java frames | |
1214 vframeStream vfst(thread); | |
1215 | |
1216 oop previous_protection_domain = NULL; | |
1217 Handle privileged_context(thread, NULL); | |
1218 bool is_privileged = false; | |
1219 oop protection_domain = NULL; | |
1220 | |
1221 for(; !vfst.at_end(); vfst.next()) { | |
1222 // get method of frame | |
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1223 Method* method = vfst.method(); |
0 | 1224 intptr_t* frame_id = vfst.frame_id(); |
1225 | |
1226 // check the privileged frames to see if we have a match | |
1227 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1228 // this frame is privileged | |
1229 is_privileged = true; | |
1230 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1231 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1232 } else { | |
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1233 protection_domain = method->method_holder()->protection_domain(); |
0 | 1234 } |
1235 | |
1236 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1237 local_array->push(protection_domain); | |
1238 previous_protection_domain = protection_domain; | |
1239 } | |
1240 | |
1241 if (is_privileged) break; | |
1242 } | |
1243 | |
1244 | |
1245 // either all the domains on the stack were system domains, or | |
1246 // we had a privileged system domain | |
1247 if (local_array->is_empty()) { | |
1248 if (is_privileged && privileged_context.is_null()) return NULL; | |
1249 | |
1250 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1251 return JNIHandles::make_local(env, result); | |
1252 } | |
1253 | |
1254 // the resource area must be registered in case of a gc | |
1255 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1256 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1257 local_array->length(), CHECK_NULL); |
1258 objArrayHandle h_context(thread, context); | |
1259 for (int index = 0; index < local_array->length(); index++) { | |
1260 h_context->obj_at_put(index, local_array->at(index)); | |
1261 } | |
1262 | |
1263 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1264 | |
1265 return JNIHandles::make_local(env, result); | |
1266 JVM_END | |
1267 | |
1268 | |
1269 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1270 JVMWrapper("JVM_IsArrayClass"); | |
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1271 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1272 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1273 JVM_END |
1274 | |
1275 | |
1276 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1277 JVMWrapper("JVM_IsPrimitiveClass"); | |
1278 oop mirror = JNIHandles::resolve_non_null(cls); | |
1279 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1280 JVM_END | |
1281 | |
1282 | |
1283 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1284 JVMWrapper("JVM_GetComponentType"); | |
1285 oop mirror = JNIHandles::resolve_non_null(cls); | |
1286 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1287 return (jclass) JNIHandles::make_local(env, result); | |
1288 JVM_END | |
1289 | |
1290 | |
1291 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1292 JVMWrapper("JVM_GetClassModifiers"); | |
1293 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1294 // Primitive type | |
1295 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1296 } | |
1297 | |
6983 | 1298 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1299 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1300 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1301 return k->modifier_flags(); | |
1302 JVM_END | |
1303 | |
1304 | |
1305 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1306 | |
1307 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1308 JvmtiVMObjectAllocEventCollector oam; | |
1309 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1310 // of an InstanceKlass |
0 | 1311 |
1312 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1313 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1314 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1315 return (jobjectArray)JNIHandles::make_local(env, result); |
1316 } | |
1317 | |
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1318 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1319 InnerClassesIterator iter(k); |
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1320 |
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1321 if (iter.length() == 0) { |
0 | 1322 // Neither an inner nor outer class |
1142 | 1323 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1324 return (jobjectArray)JNIHandles::make_local(env, result); |
1325 } | |
1326 | |
1327 // find inner class info | |
1328 constantPoolHandle cp(thread, k->constants()); | |
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1329 int length = iter.length(); |
0 | 1330 |
1331 // Allocate temp. result array | |
1142 | 1332 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1333 objArrayHandle result (THREAD, r); |
1334 int members = 0; | |
1335 | |
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1336 for (; !iter.done(); iter.next()) { |
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1337 int ioff = iter.inner_class_info_index(); |
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1338 int ooff = iter.outer_class_info_index(); |
0 | 1339 |
1340 if (ioff != 0 && ooff != 0) { | |
1341 // Check to see if the name matches the class we're looking for | |
1342 // before attempting to find the class. | |
1343 if (cp->klass_name_at_matches(k, ooff)) { | |
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1344 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1345 if (outer_klass == k()) { |
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1346 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1347 instanceKlassHandle inner_klass (THREAD, ik); |
1348 | |
1349 // Throws an exception if outer klass has not declared k as | |
1350 // an inner klass | |
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1351 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1352 |
1353 result->obj_at_put(members, inner_klass->java_mirror()); | |
1354 members++; | |
1355 } | |
1356 } | |
1357 } | |
1358 } | |
1359 | |
1360 if (members != length) { | |
1361 // Return array of right length | |
1142 | 1362 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1363 for(int i = 0; i < members; i++) { |
1364 res->obj_at_put(i, result->obj_at(i)); | |
1365 } | |
1366 return (jobjectArray)JNIHandles::make_local(env, res); | |
1367 } | |
1368 | |
1369 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1370 JVM_END | |
1371 | |
1372 | |
1373 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1374 { |
0 | 1375 // ofClass is a reference to a java_lang_Class object. |
1376 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1377 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1378 return NULL; |
1379 } | |
1380 | |
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1381 bool inner_is_member = false; |
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1382 Klass* outer_klass |
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1383 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1384 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1385 if (outer_klass == NULL) return NULL; // already a top-level class |
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1386 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1387 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1388 } |
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1389 JVM_END |
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1390 |
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1391 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1392 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1393 bool* inner_is_member, |
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1394 TRAPS) { |
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1395 Thread* thread = THREAD; |
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1396 InnerClassesIterator iter(k); |
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1397 if (iter.length() == 0) { |
0 | 1398 // No inner class info => no declaring class |
1399 return NULL; | |
1400 } | |
1401 | |
1402 constantPoolHandle i_cp(thread, k->constants()); | |
1403 | |
1404 bool found = false; | |
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1405 Klass* ok; |
0 | 1406 instanceKlassHandle outer_klass; |
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1407 *inner_is_member = false; |
0 | 1408 |
1409 // Find inner_klass attribute | |
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1410 for (; !iter.done() && !found; iter.next()) { |
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1411 int ioff = iter.inner_class_info_index(); |
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1412 int ooff = iter.outer_class_info_index(); |
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1413 int noff = iter.inner_name_index(); |
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1414 if (ioff != 0) { |
0 | 1415 // Check to see if the name matches the class we're looking for |
1416 // before attempting to find the class. | |
1417 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1418 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1419 found = (k() == inner_klass); |
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1420 if (found && ooff != 0) { |
0 | 1421 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1422 outer_klass = instanceKlassHandle(thread, ok); | |
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1423 *inner_is_member = true; |
0 | 1424 } |
1425 } | |
1426 } | |
1427 } | |
1428 | |
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1429 if (found && outer_klass.is_null()) { |
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1430 // It may be anonymous; try for that. |
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1431 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1432 if (encl_method_class_idx != 0) { |
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1433 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1434 outer_klass = instanceKlassHandle(thread, ok); |
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1435 *inner_is_member = false; |
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1436 } |
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1437 } |
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1438 |
0 | 1439 // If no inner class attribute found for this class. |
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1440 if (outer_klass.is_null()) return NULL; |
0 | 1441 |
1442 // Throws an exception if outer klass has not declared k as an inner klass | |
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1443 // We need evidence that each klass knows about the other, or else |
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1444 // the system could allow a spoof of an inner class to gain access rights. |
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1445 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1446 return outer_klass(); |
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1447 } |
0 | 1448 |
1449 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1450 assert (cls != NULL, "illegal class"); | |
1451 JVMWrapper("JVM_GetClassSignature"); | |
1452 JvmtiVMObjectAllocEventCollector oam; | |
1453 ResourceMark rm(THREAD); | |
1454 // Return null for arrays and primatives | |
1455 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1456 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1457 if (k->oop_is_instance()) { |
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1458 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1459 if (sym == NULL) return NULL; |
0 | 1460 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1461 return (jstring) JNIHandles::make_local(env, str()); | |
1462 } | |
1463 } | |
1464 return NULL; | |
1465 JVM_END | |
1466 | |
1467 | |
1468 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1469 assert (cls != NULL, "illegal class"); | |
1470 JVMWrapper("JVM_GetClassAnnotations"); | |
1471 ResourceMark rm(THREAD); | |
1472 // Return null for arrays and primitives | |
1473 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1474 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1475 if (k->oop_is_instance()) { |
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1476 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1477 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1478 } |
1479 } | |
1480 return NULL; | |
1481 JVM_END | |
1482 | |
1483 | |
1484 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
1485 assert(field != NULL, "illegal field"); | |
1486 JVMWrapper("JVM_GetFieldAnnotations"); | |
1487 | |
1488 // some of this code was adapted from from jni_FromReflectedField | |
1489 | |
1490 // field is a handle to a java.lang.reflect.Field object | |
1491 oop reflected = JNIHandles::resolve_non_null(field); | |
1492 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1493 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1494 int slot = java_lang_reflect_Field::slot(reflected); |
1495 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1496 | |
1497 fieldDescriptor fd; | |
1498 KlassHandle kh(THREAD, k); | |
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1499 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1500 |
1501 if (modifiers & JVM_ACC_STATIC) { | |
1502 // for static fields we only look in the current class | |
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1503 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1504 assert(false, "cannot find static field"); |
1505 return NULL; // robustness | |
1506 } | |
1507 } else { | |
1508 // for instance fields we start with the current class and work | |
1509 // our way up through the superclass chain | |
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1510 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1511 assert(false, "cannot find instance field"); |
1512 return NULL; // robustness | |
1513 } | |
1514 } | |
1515 | |
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1516 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1517 JVM_END |
1518 | |
1519 | |
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1520 static Method* jvm_get_method_common(jobject method) { |
0 | 1521 // some of this code was adapted from from jni_FromReflectedMethod |
1522 | |
1523 oop reflected = JNIHandles::resolve_non_null(method); | |
1524 oop mirror = NULL; | |
1525 int slot = 0; | |
1526 | |
1142 | 1527 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1528 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1529 slot = java_lang_reflect_Constructor::slot(reflected); | |
1530 } else { | |
1142 | 1531 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1532 "wrong type"); |
1533 mirror = java_lang_reflect_Method::clazz(reflected); | |
1534 slot = java_lang_reflect_Method::slot(reflected); | |
1535 } | |
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1536 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1537 |
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1538 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
0 | 1539 if (m == NULL) { |
1540 assert(false, "cannot find method"); | |
1541 return NULL; // robustness | |
1542 } | |
1543 | |
1544 return m; | |
1545 } | |
1546 | |
1547 | |
1548 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1549 JVMWrapper("JVM_GetMethodAnnotations"); | |
1550 | |
1551 // method is a handle to a java.lang.reflect.Method object | |
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1552 Method* m = jvm_get_method_common(method); |
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1553 return (jbyteArray) JNIHandles::make_local(env, |
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1554 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1555 JVM_END |
1556 | |
1557 | |
1558 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1559 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1560 | |
1561 // method is a handle to a java.lang.reflect.Method object | |
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1562 Method* m = jvm_get_method_common(method); |
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1563 return (jbyteArray) JNIHandles::make_local(env, |
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1564 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1565 JVM_END |
1566 | |
1567 | |
1568 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1569 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1570 | |
1571 // method is a handle to a java.lang.reflect.Method object | |
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1572 Method* m = jvm_get_method_common(method); |
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1573 return (jbyteArray) JNIHandles::make_local(env, |
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1574 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1575 JVM_END |
1576 | |
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1577 /* Type use annotations support (JDK 1.8) */ |
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1578 |
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1579 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1580 assert (cls != NULL, "illegal class"); |
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1581 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1582 ResourceMark rm(THREAD); |
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1583 // Return null for arrays and primitives |
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1584 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1585 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1586 if (k->oop_is_instance()) { |
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1587 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->type_annotations()->class_annotations(), CHECK_NULL); |
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1588 return (jbyteArray) JNIHandles::make_local(env, a); |
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1589 } |
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1590 } |
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1591 return NULL; |
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1592 JVM_END |
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1593 |
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1594 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1595 { |
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1596 JVMWrapper("JVM_GetMethodParameters"); |
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1597 // method is a handle to a java.lang.reflect.Method object |
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1598 Method* method_ptr = jvm_get_method_common(method); |
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1599 methodHandle mh (THREAD, method_ptr); |
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1600 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1601 const int num_params = mh->method_parameters_length(); |
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1602 |
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1603 if(0 != num_params) { |
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1604 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1605 objArrayHandle result (THREAD, result_oop); |
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1606 |
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1607 for(int i = 0; i < num_params; i++) { |
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1608 MethodParametersElement* params = mh->method_parameters_start(); |
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1609 Symbol* const sym = mh->constants()->symbol_at(params[i].name_cp_index); |
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1610 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1611 params[i].flags, CHECK_NULL); |
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1612 result->obj_at_put(i, param); |
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1613 } |
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1614 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1615 } else { |
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1616 return (jobjectArray)NULL; |
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1617 } |
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1618 } |
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1619 JVM_END |
0 | 1620 |
1621 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1622 | |
1623 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1624 { | |
1625 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1626 JvmtiVMObjectAllocEventCollector oam; | |
1627 | |
1628 // Exclude primitive types and array types | |
1629 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1630 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1631 // Return empty array |
1142 | 1632 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1633 return (jobjectArray) JNIHandles::make_local(env, res); |
1634 } | |
1635 | |
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1636 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1637 constantPoolHandle cp(THREAD, k->constants()); |
1638 | |
1639 // Ensure class is linked | |
1640 k->link_class(CHECK_NULL); | |
1641 | |
1642 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1643 bool skip_backtrace = false; | |
1644 | |
1645 // Allocate result | |
1646 int num_fields; | |
1647 | |
1648 if (publicOnly) { | |
1649 num_fields = 0; | |
3938 | 1650 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1651 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1652 } |
1653 } else { | |
3938 | 1654 num_fields = k->java_fields_count(); |
0 | 1655 |
1142 | 1656 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1657 num_fields--; |
1658 skip_backtrace = true; | |
1659 } | |
1660 } | |
1661 | |
1142 | 1662 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1663 objArrayHandle result (THREAD, r); |
1664 | |
1665 int out_idx = 0; | |
1666 fieldDescriptor fd; | |
3938 | 1667 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1668 if (skip_backtrace) { |
1669 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1670 int offset = fs.offset(); |
0 | 1671 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1672 } | |
1673 | |
3938 | 1674 if (!publicOnly || fs.access_flags().is_public()) { |
1675 fd.initialize(k(), fs.index()); | |
0 | 1676 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1677 result->obj_at_put(out_idx, field); | |
1678 ++out_idx; | |
1679 } | |
1680 } | |
1681 assert(out_idx == num_fields, "just checking"); | |
1682 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1683 } | |
1684 JVM_END | |
1685 | |
1686 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1687 { | |
1688 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1689 JvmtiVMObjectAllocEventCollector oam; | |
1690 | |
1691 // Exclude primitive types and array types | |
1692 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1693 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1694 // Return empty array |
1142 | 1695 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1696 return (jobjectArray) JNIHandles::make_local(env, res); |
1697 } | |
1698 | |
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1699 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1700 |
1701 // Ensure class is linked | |
1702 k->link_class(CHECK_NULL); | |
1703 | |
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1704 Array<Method*>* methods = k->methods(); |
0 | 1705 int methods_length = methods->length(); |
1706 int num_methods = 0; | |
1707 | |
1708 int i; | |
1709 for (i = 0; i < methods_length; i++) { | |
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1710 methodHandle method(THREAD, methods->at(i)); |
0 | 1711 if (!method->is_initializer()) { |
1712 if (!publicOnly || method->is_public()) { | |
1713 ++num_methods; | |
1714 } | |
1715 } | |
1716 } | |
1717 | |
1718 // Allocate result | |
1142 | 1719 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1720 objArrayHandle result (THREAD, r); |
1721 | |
1722 int out_idx = 0; | |
1723 for (i = 0; i < methods_length; i++) { | |
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1724 methodHandle method(THREAD, methods->at(i)); |
0 | 1725 if (!method->is_initializer()) { |
1726 if (!publicOnly || method->is_public()) { | |
1727 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1728 result->obj_at_put(out_idx, m); | |
1729 ++out_idx; | |
1730 } | |
1731 } | |
1732 } | |
1733 assert(out_idx == num_methods, "just checking"); | |
1734 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1735 } | |
1736 JVM_END | |
1737 | |
1738 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1739 { | |
1740 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1741 JvmtiVMObjectAllocEventCollector oam; | |
1742 | |
1743 // Exclude primitive types and array types | |
1744 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1745 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1746 // Return empty array |
1142 | 1747 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1748 return (jobjectArray) JNIHandles::make_local(env, res); |
1749 } | |
1750 | |
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1751 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1752 |
1753 // Ensure class is linked | |
1754 k->link_class(CHECK_NULL); | |
1755 | |
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1756 Array<Method*>* methods = k->methods(); |
0 | 1757 int methods_length = methods->length(); |
1758 int num_constructors = 0; | |
1759 | |
1760 int i; | |
1761 for (i = 0; i < methods_length; i++) { | |
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1762 methodHandle method(THREAD, methods->at(i)); |
0 | 1763 if (method->is_initializer() && !method->is_static()) { |
1764 if (!publicOnly || method->is_public()) { | |
1765 ++num_constructors; | |
1766 } | |
1767 } | |
1768 } | |
1769 | |
1770 // Allocate result | |
1142 | 1771 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1772 objArrayHandle result(THREAD, r); |
1773 | |
1774 int out_idx = 0; | |
1775 for (i = 0; i < methods_length; i++) { | |
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1776 methodHandle method(THREAD, methods->at(i)); |
0 | 1777 if (method->is_initializer() && !method->is_static()) { |
1778 if (!publicOnly || method->is_public()) { | |
1779 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1780 result->obj_at_put(out_idx, m); | |
1781 ++out_idx; | |
1782 } | |
1783 } | |
1784 } | |
1785 assert(out_idx == num_constructors, "just checking"); | |
1786 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1787 } | |
1788 JVM_END | |
1789 | |
1790 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1791 { | |
1792 JVMWrapper("JVM_GetClassAccessFlags"); | |
1793 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1794 // Primitive type | |
1795 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1796 } | |
1797 | |
6983 | 1798 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1799 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1800 } | |
1801 JVM_END | |
1802 | |
1803 | |
1804 // Constant pool access ////////////////////////////////////////////////////////// | |
1805 | |
1806 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1807 { | |
1808 JVMWrapper("JVM_GetClassConstantPool"); | |
1809 JvmtiVMObjectAllocEventCollector oam; | |
1810 | |
1811 // Return null for primitives and arrays | |
1812 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1813 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1814 if (k->oop_is_instance()) { |
0 | 1815 instanceKlassHandle k_h(THREAD, k); |
1816 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1817 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1818 return JNIHandles::make_local(jcp()); |
1819 } | |
1820 } | |
1821 return NULL; | |
1822 } | |
1823 JVM_END | |
1824 | |
1825 | |
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1826 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1827 { |
1828 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1829 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1830 return cp->length(); |
1831 } | |
1832 JVM_END | |
1833 | |
1834 | |
1835 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
1836 if (!cp->is_within_bounds(index)) { | |
1837 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
1838 } | |
1839 } | |
1840 | |
1841 | |
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1842 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1843 { |
1844 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1845 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1846 bounds_check(cp, index, CHECK_NULL); |
1847 constantTag tag = cp->tag_at(index); | |
1848 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1849 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1850 } | |
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1851 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1852 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1853 } |
1854 JVM_END | |
1855 | |
1856 | |
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1857 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1858 { |
1859 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1860 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1861 bounds_check(cp, index, CHECK_NULL); |
1862 constantTag tag = cp->tag_at(index); | |
1863 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1864 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1865 } | |
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1866 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 1867 if (k == NULL) return NULL; |
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1868 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1869 } |
1870 JVM_END | |
1871 | |
1872 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1873 constantTag tag = cp->tag_at(index); | |
1874 if (!tag.is_method() && !tag.is_interface_method()) { | |
1875 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1876 } | |
1877 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1878 Klass* k_o; |
0 | 1879 if (force_resolution) { |
1880 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1881 } else { | |
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1882 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 1883 if (k_o == NULL) return NULL; |
1884 } | |
1885 instanceKlassHandle k(THREAD, k_o); | |
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1886 Symbol* name = cp->uncached_name_ref_at(index); |
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1887 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1888 methodHandle m (THREAD, k->find_method(name, sig)); |
1889 if (m.is_null()) { | |
1890 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1891 } | |
1892 oop method; | |
1893 if (!m->is_initializer() || m->is_static()) { | |
1894 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1895 } else { | |
1896 method = Reflection::new_constructor(m, CHECK_NULL); | |
1897 } | |
1898 return JNIHandles::make_local(method); | |
1899 } | |
1900 | |
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1901 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1902 { |
1903 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
1904 JvmtiVMObjectAllocEventCollector oam; | |
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1905 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1906 bounds_check(cp, index, CHECK_NULL); |
1907 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
1908 return res; | |
1909 } | |
1910 JVM_END | |
1911 | |
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1912 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1913 { |
1914 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
1915 JvmtiVMObjectAllocEventCollector oam; | |
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1916 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1917 bounds_check(cp, index, CHECK_NULL); |
1918 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
1919 return res; | |
1920 } | |
1921 JVM_END | |
1922 | |
1923 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1924 constantTag tag = cp->tag_at(index); | |
1925 if (!tag.is_field()) { | |
1926 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1927 } | |
1928 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1929 Klass* k_o; |
0 | 1930 if (force_resolution) { |
1931 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1932 } else { | |
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1933 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 1934 if (k_o == NULL) return NULL; |
1935 } | |
1936 instanceKlassHandle k(THREAD, k_o); | |
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1937 Symbol* name = cp->uncached_name_ref_at(index); |
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1938 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1939 fieldDescriptor fd; |
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1940 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 1941 if (target_klass == NULL) { |
1942 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
1943 } | |
1944 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
1945 return JNIHandles::make_local(field); | |
1946 } | |
1947 | |
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1948 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 1949 { |
1950 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
1951 JvmtiVMObjectAllocEventCollector oam; | |
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1952 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1953 bounds_check(cp, index, CHECK_NULL); |
1954 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
1955 return res; | |
1956 } | |
1957 JVM_END | |
1958 | |
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1959 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1960 { |
1961 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
1962 JvmtiVMObjectAllocEventCollector oam; | |
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1963 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1964 bounds_check(cp, index, CHECK_NULL); |
1965 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
1966 return res; | |
1967 } | |
1968 JVM_END | |
1969 | |
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1970 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1971 { |
1972 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
1973 JvmtiVMObjectAllocEventCollector oam; | |
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1974 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1975 bounds_check(cp, index, CHECK_NULL); |
1976 constantTag tag = cp->tag_at(index); | |
1977 if (!tag.is_field_or_method()) { | |
1978 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1979 } | |
1980 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
2177
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1981 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1982 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1983 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 1984 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 1985 objArrayHandle dest(THREAD, dest_o); |
1986 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
1987 dest->obj_at_put(0, str()); | |
1988 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
1989 dest->obj_at_put(1, str()); | |
1990 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
1991 dest->obj_at_put(2, str()); | |
1992 return (jobjectArray) JNIHandles::make_local(dest()); | |
1993 } | |
1994 JVM_END | |
1995 | |
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1996 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1997 { |
1998 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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1999 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2000 bounds_check(cp, index, CHECK_0); |
2001 constantTag tag = cp->tag_at(index); | |
2002 if (!tag.is_int()) { | |
2003 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2004 } | |
2005 return cp->int_at(index); | |
2006 } | |
2007 JVM_END | |
2008 | |
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2009 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2010 { |
2011 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2012 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2013 bounds_check(cp, index, CHECK_(0L)); |
2014 constantTag tag = cp->tag_at(index); | |
2015 if (!tag.is_long()) { | |
2016 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2017 } | |
2018 return cp->long_at(index); | |
2019 } | |
2020 JVM_END | |
2021 | |
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2022 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2023 { |
2024 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2025 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2026 bounds_check(cp, index, CHECK_(0.0f)); |
2027 constantTag tag = cp->tag_at(index); | |
2028 if (!tag.is_float()) { | |
2029 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2030 } | |
2031 return cp->float_at(index); | |
2032 } | |
2033 JVM_END | |
2034 | |
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2035 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2036 { |
2037 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2038 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2039 bounds_check(cp, index, CHECK_(0.0)); |
2040 constantTag tag = cp->tag_at(index); | |
2041 if (!tag.is_double()) { | |
2042 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2043 } | |
2044 return cp->double_at(index); | |
2045 } | |
2046 JVM_END | |
2047 | |
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2048 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2049 { |
2050 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2051 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2052 bounds_check(cp, index, CHECK_NULL); |
2053 constantTag tag = cp->tag_at(index); | |
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2054 if (!tag.is_string()) { |
0 | 2055 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2056 } | |
2057 oop str = cp->string_at(index, CHECK_NULL); | |
2058 return (jstring) JNIHandles::make_local(str); | |
2059 } | |
2060 JVM_END | |
2061 | |
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2062 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2063 { |
2064 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2065 JvmtiVMObjectAllocEventCollector oam; | |
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2066 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2067 bounds_check(cp, index, CHECK_NULL); |
2068 constantTag tag = cp->tag_at(index); | |
2069 if (!tag.is_symbol()) { | |
2070 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2071 } | |
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2072 Symbol* sym = cp->symbol_at(index); |
0 | 2073 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2074 return (jstring) JNIHandles::make_local(str()); | |
2075 } | |
2076 JVM_END | |
2077 | |
2078 | |
2079 // Assertion support. ////////////////////////////////////////////////////////// | |
2080 | |
2081 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2082 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2083 assert(cls != NULL, "bad class"); | |
2084 | |
2085 oop r = JNIHandles::resolve(cls); | |
2086 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2087 if (java_lang_Class::is_primitive(r)) return false; | |
2088 | |
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2089 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2090 assert(k->oop_is_instance(), "must be an instance klass"); |
2091 if (! k->oop_is_instance()) return false; | |
0 | 2092 |
2093 ResourceMark rm(THREAD); | |
6983 | 2094 const char* name = k->name()->as_C_string(); |
2095 bool system_class = k->class_loader() == NULL; | |
0 | 2096 return JavaAssertions::enabled(name, system_class); |
2097 | |
2098 JVM_END | |
2099 | |
2100 | |
2101 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2102 // command-line assertion arguments (i.e., -ea, -da). | |
2103 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2104 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2105 JvmtiVMObjectAllocEventCollector oam; | |
2106 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2107 return JNIHandles::make_local(env, asd); | |
2108 JVM_END | |
2109 | |
2110 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2111 | |
2112 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2113 | |
2114 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2115 // All functions from this section should call the jvmtiThreadSate function: | |
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2116 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2117 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2118 // was invoked in the middle of the class redefinition. |
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2119 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2120 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2121 | |
2122 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2123 JVMWrapper("JVM_GetClassNameUTF"); | |
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2124 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2125 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2126 return k->name()->as_utf8(); |
0 | 2127 JVM_END |
2128 | |
2129 | |
2130 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2131 JVMWrapper("JVM_GetClassCPTypes"); | |
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2132 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2133 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2134 // types will have length zero if this is not an InstanceKlass |
0 | 2135 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2136 if (k->oop_is_instance()) { |
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2137 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2138 for (int index = cp->length() - 1; index >= 0; index--) { |
2139 constantTag tag = cp->tag_at(index); | |
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2140 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2141 } |
2142 } | |
2143 JVM_END | |
2144 | |
2145 | |
2146 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2147 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2148 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2149 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2150 if (!k->oop_is_instance()) |
0 | 2151 return 0; |
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2152 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2153 JVM_END |
2154 | |
2155 | |
2156 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2157 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2158 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2159 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2160 if (!k->oop_is_instance()) |
0 | 2161 return 0; |
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2162 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2163 JVM_END |
2164 | |
2165 | |
2166 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2167 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2168 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2169 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2170 if (!k->oop_is_instance()) |
0 | 2171 return 0; |
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2172 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2173 JVM_END |
2174 | |
2175 | |
2176 // The following methods, used for the verifier, are never called with | |
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2177 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2178 // Typically, these methods are called in a loop with bounds determined |
2179 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2180 // zero for arrays. | |
2181 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2182 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2183 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2184 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2185 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2186 int length = method->checked_exceptions_length(); |
0 | 2187 if (length > 0) { |
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2188 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2189 for (int i = 0; i < length; i++) { |
2190 exceptions[i] = table[i].class_cp_index; | |
2191 } | |
2192 } | |
2193 JVM_END | |
2194 | |
2195 | |
2196 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2197 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2198 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2199 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2200 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2201 return method->checked_exceptions_length(); |
0 | 2202 JVM_END |
2203 | |
2204 | |
2205 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2206 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2207 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2208 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2209 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2210 memcpy(code, method->code_base(), method->code_size()); |
0 | 2211 JVM_END |
2212 | |
2213 | |
2214 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2215 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2216 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2217 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2218 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2219 return method->code_size(); |
0 | 2220 JVM_END |
2221 | |
2222 | |
2223 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2224 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2225 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2226 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2227 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2228 ExceptionTable extable(method); |
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2229 entry->start_pc = extable.start_pc(entry_index); |
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2230 entry->end_pc = extable.end_pc(entry_index); |
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2231 entry->handler_pc = extable.handler_pc(entry_index); |
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2232 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2233 JVM_END |
2234 | |
2235 | |
2236 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2237 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2238 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2239 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2240 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2241 return method->exception_table_length(); |
0 | 2242 JVM_END |
2243 | |
2244 | |
2245 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2246 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2247 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2248 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2249 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2250 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2251 JVM_END |
2252 | |
2253 | |
2254 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2255 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2256 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2257 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2258 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2259 JVM_END |
2260 | |
2261 | |
2262 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2263 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2264 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2265 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2266 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2267 return method->max_locals(); |
0 | 2268 JVM_END |
2269 | |
2270 | |
2271 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2272 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2273 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2274 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2275 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2276 return method->size_of_parameters(); |
0 | 2277 JVM_END |
2278 | |
2279 | |
2280 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2281 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2282 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2283 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2284 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2285 return method->verifier_max_stack(); |
0 | 2286 JVM_END |
2287 | |
2288 | |
2289 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2290 JVMWrapper("JVM_IsConstructorIx"); | |
2291 ResourceMark rm(THREAD); | |
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2292 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2293 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2294 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2295 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2296 JVM_END |
2297 | |
2298 | |
2299 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2300 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2301 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2302 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2303 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2304 return method->name()->as_utf8(); |
0 | 2305 JVM_END |
2306 | |
2307 | |
2308 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2309 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2310 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2311 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2312 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2313 return method->signature()->as_utf8(); |
0 | 2314 JVM_END |
2315 | |
2316 /** | |
2317 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2318 * read entries in the constant pool. Since the old verifier always | |
2319 * works on a copy of the code, it will not see any rewriting that | |
2320 * may possibly occur in the middle of verification. So it is important | |
2321 * that nothing it calls tries to use the cpCache instead of the raw | |
2322 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2323 */ | |
2324 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2325 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2326 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2327 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2328 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2329 switch (cp->tag_at(cp_index).value()) { |
2330 case JVM_CONSTANT_Fieldref: | |
2331 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2332 default: | |
2333 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2334 } | |
2335 ShouldNotReachHere(); | |
2336 return NULL; | |
2337 JVM_END | |
2338 | |
2339 | |
2340 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2341 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2342 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2343 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2344 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2345 switch (cp->tag_at(cp_index).value()) { |
2346 case JVM_CONSTANT_InterfaceMethodref: | |
2347 case JVM_CONSTANT_Methodref: | |
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2348 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2349 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2350 default: | |
2351 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2352 } | |
2353 ShouldNotReachHere(); | |
2354 return NULL; | |
2355 JVM_END | |
2356 | |
2357 | |
2358 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2359 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2360 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2362 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2363 switch (cp->tag_at(cp_index).value()) { |
2364 case JVM_CONSTANT_InterfaceMethodref: | |
2365 case JVM_CONSTANT_Methodref: | |
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2366 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2367 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2368 default: | |
2369 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2370 } | |
2371 ShouldNotReachHere(); | |
2372 return NULL; | |
2373 JVM_END | |
2374 | |
2375 | |
2376 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2377 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2378 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2379 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2380 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2381 switch (cp->tag_at(cp_index).value()) { |
2382 case JVM_CONSTANT_Fieldref: | |
2383 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2384 default: | |
2385 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2386 } | |
2387 ShouldNotReachHere(); | |
2388 return NULL; | |
2389 JVM_END | |
2390 | |
2391 | |
2392 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2393 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2394 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2395 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2396 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2397 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2398 return classname->as_utf8(); |
2399 JVM_END | |
2400 | |
2401 | |
2402 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2403 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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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 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2407 switch (cp->tag_at(cp_index).value()) { |
2408 case JVM_CONSTANT_Fieldref: { | |
2409 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2410 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2411 return classname->as_utf8(); |
2412 } | |
2413 default: | |
2414 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2415 } | |
2416 ShouldNotReachHere(); | |
2417 return NULL; | |
2418 JVM_END | |
2419 | |
2420 | |
2421 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2422 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2423 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2424 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2425 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2426 switch (cp->tag_at(cp_index).value()) { |
2427 case JVM_CONSTANT_Methodref: | |
2428 case JVM_CONSTANT_InterfaceMethodref: { | |
2429 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2430 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2431 return classname->as_utf8(); |
2432 } | |
2433 default: | |
2434 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2435 } | |
2436 ShouldNotReachHere(); | |
2437 return NULL; | |
2438 JVM_END | |
2439 | |
2440 | |
3938 | 2441 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2442 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2443 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2444 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2445 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2446 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2447 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2448 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2449 switch (cp->tag_at(cp_index).value()) { |
2450 case JVM_CONSTANT_Fieldref: { | |
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2451 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2452 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2453 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2454 if (fs.name() == name && fs.signature() == signature) { | |
2455 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2456 } |
2457 } | |
2458 return -1; | |
2459 } | |
2460 default: | |
2461 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2462 } | |
2463 ShouldNotReachHere(); | |
2464 return 0; | |
2465 JVM_END | |
2466 | |
2467 | |
2468 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2469 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2470 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2471 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2472 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2473 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2474 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2475 switch (cp->tag_at(cp_index).value()) { |
2476 case JVM_CONSTANT_Methodref: | |
2477 case JVM_CONSTANT_InterfaceMethodref: { | |
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2478 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2479 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2480 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2481 int methods_count = methods->length(); |
2482 for (int i = 0; i < methods_count; i++) { | |
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
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changeset
|
2483 Method* method = methods->at(i); |
0 | 2484 if (method->name() == name && method->signature() == signature) { |
2485 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2486 } | |
2487 } | |
2488 return -1; | |
2489 } | |
2490 default: | |
2491 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2492 } | |
2493 ShouldNotReachHere(); | |
2494 return 0; | |
2495 JVM_END | |
2496 | |
2497 | |
2498 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2499 | |
2500 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2501 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2502 JVM_END | |
2503 | |
2504 | |
2505 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2506 JVMWrapper("JVM_IsSameClassPackage"); | |
2507 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2508 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
2509 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
2510 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2511 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2512 JVM_END | |
2513 | |
2514 | |
2515 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2516 | |
2517 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2518 JVMWrapper2("JVM_Open (%s)", fname); | |
2519 | |
2520 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2521 int result = os::open(fname, flags, mode); |
0 | 2522 if (result >= 0) { |
2523 return result; | |
2524 } else { | |
2525 switch(errno) { | |
2526 case EEXIST: | |
2527 return JVM_EEXIST; | |
2528 default: | |
2529 return -1; | |
2530 } | |
2531 } | |
2532 JVM_END | |
2533 | |
2534 | |
2535 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2536 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2537 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2538 return os::close(fd); |
0 | 2539 JVM_END |
2540 | |
2541 | |
2542 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2543 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2544 | |
2545 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
2546 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2547 JVM_END |
2548 | |
2549 | |
2550 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2551 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2552 | |
2553 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2554 return (jint)os::write(fd, buf, nbytes); |
0 | 2555 JVM_END |
2556 | |
2557 | |
2558 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2559 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2560 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2561 return os::available(fd, pbytes); |
0 | 2562 JVM_END |
2563 | |
2564 | |
2565 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2566 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2567 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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parents:
1972
diff
changeset
|
2568 return os::lseek(fd, offset, whence); |
0 | 2569 JVM_END |
2570 | |
2571 | |
2572 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2573 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2574 return os::ftruncate(fd, length); |
0 | 2575 JVM_END |
2576 | |
2577 | |
2578 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2579 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2580 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2581 return os::fsync(fd); |
0 | 2582 JVM_END |
2583 | |
2584 | |
2585 // Printing support ////////////////////////////////////////////////// | |
2586 extern "C" { | |
2587 | |
2588 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2589 // see bug 4399518, 4417214 | |
2590 if ((intptr_t)count <= 0) return -1; | |
2591 return vsnprintf(str, count, fmt, args); | |
2592 } | |
2593 | |
2594 | |
2595 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2596 va_list args; | |
2597 int len; | |
2598 va_start(args, fmt); | |
2599 len = jio_vsnprintf(str, count, fmt, args); | |
2600 va_end(args); | |
2601 return len; | |
2602 } | |
2603 | |
2604 | |
2605 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2606 int len; | |
2607 va_list args; | |
2608 va_start(args, fmt); | |
2609 len = jio_vfprintf(f, fmt, args); | |
2610 va_end(args); | |
2611 return len; | |
2612 } | |
2613 | |
2614 | |
2615 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2616 if (Arguments::vfprintf_hook() != NULL) { | |
2617 return Arguments::vfprintf_hook()(f, fmt, args); | |
2618 } else { | |
2619 return vfprintf(f, fmt, args); | |
2620 } | |
2621 } | |
2622 | |
2623 | |
2191 | 2624 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2625 int len; |
2626 va_list args; | |
2627 va_start(args, fmt); | |
2628 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2629 va_end(args); | |
2630 return len; | |
2631 } | |
2632 | |
2633 | |
2634 // HotSpot specific jio method | |
2635 void jio_print(const char* s) { | |
2636 // Try to make this function as atomic as possible. | |
2637 if (Arguments::vfprintf_hook() != NULL) { | |
2638 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2639 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2640 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2641 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2642 } |
2643 } | |
2644 | |
2645 } // Extern C | |
2646 | |
2647 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2648 | |
2649 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2650 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2651 // OSThread objects. The exception to this rule is when the target object is the thread | |
2652 // doing the operation, in which case we know that the thread won't exit until the | |
2653 // operation is done (all exits being voluntary). There are a few cases where it is | |
2654 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2655 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2656 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2657 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2658 // implementation is local to this file, we always lock Threads_lock for that one. | |
2659 | |
2660 static void thread_entry(JavaThread* thread, TRAPS) { | |
2661 HandleMark hm(THREAD); | |
2662 Handle obj(THREAD, thread->threadObj()); | |
2663 JavaValue result(T_VOID); | |
2664 JavaCalls::call_virtual(&result, | |
2665 obj, | |
1142 | 2666 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
2667 vmSymbols::run_method_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2668 vmSymbols::void_method_signature(), |
0 | 2669 THREAD); |
2670 } | |
2671 | |
2672 | |
2673 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2674 JVMWrapper("JVM_StartThread"); | |
2675 JavaThread *native_thread = NULL; | |
2676 | |
2677 // We cannot hold the Threads_lock when we throw an exception, | |
2678 // due to rank ordering issues. Example: we might need to grab the | |
2679 // Heap_lock while we construct the exception. | |
2680 bool throw_illegal_thread_state = false; | |
2681 | |
2682 // We must release the Threads_lock before we can post a jvmti event | |
2683 // in Thread::start. | |
2684 { | |
2685 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2686 // we operate. | |
2687 MutexLocker mu(Threads_lock); | |
2688 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2689 // 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
dholmes
parents:
1980
diff
changeset
|
2690 // 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
|
2691 // that the JavaThread is null. However for a JNI attached thread |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2692 // 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
dholmes
parents:
1980
diff
changeset
|
2693 // (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
parents:
1980
diff
changeset
|
2694 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2695 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
dholmes
parents:
1980
diff
changeset
|
2696 throw_illegal_thread_state = true; |
0 | 2697 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2698 // 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
dholmes
parents:
1980
diff
changeset
|
2699 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2700 |
0 | 2701 jlong size = |
2702 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2703 // Allocate the C++ Thread structure and create the native thread. The | |
2704 // stack size retrieved from java is signed, but the constructor takes | |
2705 // size_t (an unsigned type), so avoid passing negative values which would | |
2706 // result in really large stacks. | |
2707 size_t sz = size > 0 ? (size_t) size : 0; | |
2708 native_thread = new JavaThread(&thread_entry, sz); | |
2709 | |
2710 // At this point it may be possible that no osthread was created for the | |
2711 // JavaThread due to lack of memory. Check for this situation and throw | |
2712 // an exception if necessary. Eventually we may want to change this so | |
2713 // that we only grab the lock if the thread was created successfully - | |
2714 // then we can also do this check and throw the exception in the | |
2715 // JavaThread constructor. | |
2716 if (native_thread->osthread() != NULL) { | |
2717 // Note: the current thread is not being used within "prepare". | |
2718 native_thread->prepare(jthread); | |
2719 } | |
2720 } | |
2721 } | |
2722 | |
2723 if (throw_illegal_thread_state) { | |
2724 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2725 } | |
2726 | |
2727 assert(native_thread != NULL, "Starting null thread?"); | |
2728 | |
2729 if (native_thread->osthread() == NULL) { | |
2730 // No one should hold a reference to the 'native_thread'. | |
2731 delete native_thread; | |
2732 if (JvmtiExport::should_post_resource_exhausted()) { | |
2733 JvmtiExport::post_resource_exhausted( | |
2734 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2735 "unable to create new native thread"); | |
2736 } | |
2737 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2738 "unable to create new native thread"); | |
2739 } | |
2740 | |
2741 Thread::start(native_thread); | |
2742 | |
2743 JVM_END | |
2744 | |
2745 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2746 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2747 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2748 // same thread as the sender, no safepoint is needed. |
0 | 2749 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2750 JVMWrapper("JVM_StopThread"); | |
2751 | |
2752 oop java_throwable = JNIHandles::resolve(throwable); | |
2753 if (java_throwable == NULL) { | |
2754 THROW(vmSymbols::java_lang_NullPointerException()); | |
2755 } | |
2756 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2757 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2758 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2759 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2760 receiver, (address)java_thread, throwable); |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2761 // First check if thread is alive |
0 | 2762 if (receiver != NULL) { |
2763 // Check if exception is getting thrown at self (use oop equality, since the | |
2764 // target object might exit) | |
2765 if (java_thread == thread->threadObj()) { | |
2766 THROW_OOP(java_throwable); | |
2767 } else { | |
2768 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2769 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2770 } | |
2771 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2772 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2773 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2774 // - 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
parents:
1980
diff
changeset
|
2775 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2776 // 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
dholmes
parents:
1980
diff
changeset
|
2777 // 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
|
2778 // stillborn flag for the first case, and if the thread has already |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2779 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2780 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2781 } |
0 | 2782 JVM_END |
2783 | |
2784 | |
2785 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2786 JVMWrapper("JVM_IsThreadAlive"); | |
2787 | |
2788 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2789 return java_lang_Thread::is_alive(thread_oop); | |
2790 JVM_END | |
2791 | |
2792 | |
2793 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2794 JVMWrapper("JVM_SuspendThread"); | |
2795 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2796 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2797 | |
2798 if (receiver != NULL) { | |
2799 // thread has run and has not exited (still on threads list) | |
2800 | |
2801 { | |
2802 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2803 if (receiver->is_external_suspend()) { | |
2804 // Don't allow nested external suspend requests. We can't return | |
2805 // an error from this interface so just ignore the problem. | |
2806 return; | |
2807 } | |
2808 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2809 return; | |
2810 } | |
2811 receiver->set_external_suspend(); | |
2812 } | |
2813 | |
2814 // java_suspend() will catch threads in the process of exiting | |
2815 // and will ignore them. | |
2816 receiver->java_suspend(); | |
2817 | |
2818 // It would be nice to have the following assertion in all the | |
2819 // time, but it is possible for a racing resume request to have | |
2820 // resumed this thread right after we suspended it. Temporarily | |
2821 // enable this assertion if you are chasing a different kind of | |
2822 // bug. | |
2823 // | |
2824 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2825 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2826 } | |
2827 JVM_END | |
2828 | |
2829 | |
2830 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2831 JVMWrapper("JVM_ResumeThread"); | |
2832 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2833 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2834 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2835 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2836 // looks at it. | |
2837 MutexLocker ml(Threads_lock); | |
2838 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2839 if (thr != NULL) { | |
2840 // the thread has run and is not in the process of exiting | |
2841 thr->java_resume(); | |
2842 } | |
2843 JVM_END | |
2844 | |
2845 | |
2846 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2847 JVMWrapper("JVM_SetThreadPriority"); | |
2848 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2849 MutexLocker ml(Threads_lock); | |
2850 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2851 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2852 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2853 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2854 Thread::set_priority(thr, (ThreadPriority)prio); | |
2855 } | |
2856 JVM_END | |
2857 | |
2858 | |
2859 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2860 JVMWrapper("JVM_Yield"); | |
2861 if (os::dont_yield()) return; | |
4006 | 2862 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2863 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 2864 #else /* USDT2 */ |
2865 HOTSPOT_THREAD_YIELD(); | |
2866 #endif /* USDT2 */ | |
0 | 2867 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
2868 // Critical for similar threading behaviour | |
2869 if (ConvertYieldToSleep) { | |
2870 os::sleep(thread, MinSleepInterval, false); | |
2871 } else { | |
2872 os::yield(); | |
2873 } | |
2874 JVM_END | |
2875 | |
2876 | |
2877 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2878 JVMWrapper("JVM_Sleep"); | |
2879 | |
2880 if (millis < 0) { | |
2881 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2882 } | |
2883 | |
2884 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2885 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2886 } | |
2887 | |
2888 // Save current thread state and restore it at the end of this block. | |
2889 // And set new thread state to SLEEPING. | |
2890 JavaThreadSleepState jtss(thread); | |
2891 | |
4006 | 2892 #ifndef USDT2 |
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2893 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 2894 #else /* USDT2 */ |
2895 HOTSPOT_THREAD_SLEEP_BEGIN( | |
2896 millis); | |
2897 #endif /* USDT2 */ | |
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2898 |
0 | 2899 if (millis == 0) { |
2900 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
2901 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
2902 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
2903 // for SOLARIS | |
2904 if (ConvertSleepToYield) { | |
2905 os::yield(); | |
2906 } else { | |
2907 ThreadState old_state = thread->osthread()->get_state(); | |
2908 thread->osthread()->set_state(SLEEPING); | |
2909 os::sleep(thread, MinSleepInterval, false); | |
2910 thread->osthread()->set_state(old_state); | |
2911 } | |
2912 } else { | |
2913 ThreadState old_state = thread->osthread()->get_state(); | |
2914 thread->osthread()->set_state(SLEEPING); | |
2915 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
2916 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
2917 // us while we were sleeping. We do not overwrite those. | |
2918 if (!HAS_PENDING_EXCEPTION) { | |
4006 | 2919 #ifndef USDT2 |
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2920 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 2921 #else /* USDT2 */ |
2922 HOTSPOT_THREAD_SLEEP_END( | |
2923 1); | |
2924 #endif /* USDT2 */ | |
0 | 2925 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
2926 // to properly restore the thread state. That's likely wrong. | |
2927 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2928 } | |
2929 } | |
2930 thread->osthread()->set_state(old_state); | |
2931 } | |
4006 | 2932 #ifndef USDT2 |
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2933 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 2934 #else /* USDT2 */ |
2935 HOTSPOT_THREAD_SLEEP_END( | |
2936 0); | |
2937 #endif /* USDT2 */ | |
0 | 2938 JVM_END |
2939 | |
2940 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
2941 JVMWrapper("JVM_CurrentThread"); | |
2942 oop jthread = thread->threadObj(); | |
2943 assert (thread != NULL, "no current thread!"); | |
2944 return JNIHandles::make_local(env, jthread); | |
2945 JVM_END | |
2946 | |
2947 | |
2948 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
2949 JVMWrapper("JVM_CountStackFrames"); | |
2950 | |
2951 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2952 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2953 bool throw_illegal_thread_state = false; | |
2954 int count = 0; | |
2955 | |
2956 { | |
2957 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2958 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2959 // acquire of the lock | |
2960 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2961 | |
2962 if (thr == NULL) { | |
2963 // do nothing | |
2964 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
2965 // Check whether this java thread has been suspended already. If not, throws | |
2966 // IllegalThreadStateException. We defer to throw that exception until | |
2967 // Threads_lock is released since loading exception class has to leave VM. | |
2968 // The correct way to test a thread is actually suspended is | |
2969 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
2970 // the Threads_lock. The above tests are sufficient for our purposes | |
2971 // provided the walkability of the stack is stable - which it isn't | |
2972 // 100% but close enough for most practical purposes. | |
2973 throw_illegal_thread_state = true; | |
2974 } else { | |
2975 // Count all java activation, i.e., number of vframes | |
2976 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
2977 // Native frames are not counted | |
2978 if (!vfst.method()->is_native()) count++; | |
2979 } | |
2980 } | |
2981 } | |
2982 | |
2983 if (throw_illegal_thread_state) { | |
2984 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
2985 "this thread is not suspended"); | |
2986 } | |
2987 return count; | |
2988 JVM_END | |
2989 | |
2990 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
2991 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
2992 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
2993 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
2994 // outside the critical section. Threads_lock is hot so we want to minimize | |
2995 // the hold-time. A cleaner interface would be to decompose interrupt into | |
2996 // two steps. The 1st phase, performed under Threads_lock, would return | |
2997 // a closure that'd be invoked after Threads_lock was dropped. | |
2998 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
2999 // admit spurious wakeups. | |
3000 | |
3001 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3002 JVMWrapper("JVM_Interrupt"); | |
3003 | |
3004 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3005 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3006 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3007 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3008 // acquire of the lock | |
3009 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3010 if (thr != NULL) { | |
3011 Thread::interrupt(thr); | |
3012 } | |
3013 JVM_END | |
3014 | |
3015 | |
3016 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3017 JVMWrapper("JVM_IsInterrupted"); | |
3018 | |
3019 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3020 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3021 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3022 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3023 // acquire of the lock | |
3024 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3025 if (thr == NULL) { | |
3026 return JNI_FALSE; | |
3027 } else { | |
3028 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3029 } | |
3030 JVM_END | |
3031 | |
3032 | |
3033 // Return true iff the current thread has locked the object passed in | |
3034 | |
3035 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3036 JVMWrapper("JVM_HoldsLock"); | |
3037 assert(THREAD->is_Java_thread(), "sanity check"); | |
3038 if (obj == NULL) { | |
3039 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3040 } | |
3041 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3042 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3043 JVM_END | |
3044 | |
3045 | |
3046 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3047 JVMWrapper("JVM_DumpAllStacks"); | |
3048 VM_PrintThreads op; | |
3049 VMThread::execute(&op); | |
3050 if (JvmtiExport::should_post_data_dump()) { | |
3051 JvmtiExport::post_data_dump(); | |
3052 } | |
3053 JVM_END | |
3054 | |
4006 | 3055 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3056 JVMWrapper("JVM_SetNativeThreadName"); | |
3057 ResourceMark rm(THREAD); | |
3058 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3059 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3060 // Thread naming only supported for the current thread, doesn't work for | |
3061 // target threads. | |
3062 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3063 // we don't set the name of an attached thread to avoid stepping | |
3064 // on other programs | |
3065 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3066 os::set_native_thread_name(thread_name); | |
3067 } | |
3068 JVM_END | |
0 | 3069 |
3070 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3071 | |
3072 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3073 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3074 if (jthread->privileged_stack_top() == NULL) return false; | |
3075 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3076 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3077 if (loader == NULL) return true; | |
3078 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3079 if (trusted) return true; | |
3080 } | |
3081 return false; | |
3082 } | |
3083 | |
3084 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3085 JVMWrapper("JVM_CurrentLoadedClass"); | |
3086 ResourceMark rm(THREAD); | |
3087 | |
3088 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3089 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3090 bool trusted = is_trusted_frame(thread, &vfst); | |
3091 if (trusted) return NULL; | |
3092 | |
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3093 Method* m = vfst.method(); |
0 | 3094 if (!m->is_native()) { |
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3095 InstanceKlass* holder = m->method_holder(); |
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3096 oop loader = holder->class_loader(); |
0 | 3097 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
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3098 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3099 } |
3100 } | |
3101 } | |
3102 return NULL; | |
3103 JVM_END | |
3104 | |
3105 | |
3106 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3107 JVMWrapper("JVM_CurrentClassLoader"); | |
3108 ResourceMark rm(THREAD); | |
3109 | |
3110 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3111 | |
3112 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3113 bool trusted = is_trusted_frame(thread, &vfst); | |
3114 if (trusted) return NULL; | |
3115 | |
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3116 Method* m = vfst.method(); |
0 | 3117 if (!m->is_native()) { |
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3118 InstanceKlass* holder = m->method_holder(); |
0 | 3119 assert(holder->is_klass(), "just checking"); |
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3120 oop loader = holder->class_loader(); |
0 | 3121 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3122 return JNIHandles::make_local(env, loader); | |
3123 } | |
3124 } | |
3125 } | |
3126 return NULL; | |
3127 JVM_END | |
3128 | |
3129 | |
3130 // Utility object for collecting method holders walking down the stack | |
3131 class KlassLink: public ResourceObj { | |
3132 public: | |
3133 KlassHandle klass; | |
3134 KlassLink* next; | |
3135 | |
3136 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3137 }; | |
3138 | |
3139 | |
3140 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3141 JVMWrapper("JVM_GetClassContext"); | |
3142 ResourceMark rm(THREAD); | |
3143 JvmtiVMObjectAllocEventCollector oam; | |
3144 // Collect linked list of (handles to) method holders | |
3145 KlassLink* first = NULL; | |
3146 KlassLink* last = NULL; | |
3147 int depth = 0; | |
3148 | |
3149 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
3150 // Native frames are not returned | |
3151 if (!vfst.method()->is_native()) { | |
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3152 Klass* holder = vfst.method()->method_holder(); |
0 | 3153 assert(holder->is_klass(), "just checking"); |
3154 depth++; | |
3155 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3156 if (first == NULL) { | |
3157 first = last = l; | |
3158 } else { | |
3159 last->next = l; | |
3160 last = l; | |
3161 } | |
3162 } | |
3163 } | |
3164 | |
3165 // Create result array of type [Ljava/lang/Class; | |
1142 | 3166 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3167 // Fill in mirrors corresponding to method holders |
3168 int index = 0; | |
3169 while (first != NULL) { | |
6983 | 3170 result->obj_at_put(index++, first->klass()->java_mirror()); |
0 | 3171 first = first->next; |
3172 } | |
3173 assert(index == depth, "just checking"); | |
3174 | |
3175 return (jobjectArray) JNIHandles::make_local(env, result); | |
3176 JVM_END | |
3177 | |
3178 | |
3179 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3180 JVMWrapper("JVM_ClassDepth"); | |
3181 ResourceMark rm(THREAD); | |
3182 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3183 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3184 | |
3185 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3186 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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3187 if (class_name_sym == NULL) { |
0 | 3188 return -1; |
3189 } | |
3190 | |
3191 int depth = 0; | |
3192 | |
3193 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3194 if (!vfst.method()->is_native()) { | |
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3195 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3196 assert(holder->is_klass(), "just checking"); |
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3197 if (holder->name() == class_name_sym) { |
0 | 3198 return depth; |
3199 } | |
3200 depth++; | |
3201 } | |
3202 } | |
3203 return -1; | |
3204 JVM_END | |
3205 | |
3206 | |
3207 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3208 JVMWrapper("JVM_ClassLoaderDepth"); | |
3209 ResourceMark rm(THREAD); | |
3210 int depth = 0; | |
3211 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3212 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3213 bool trusted = is_trusted_frame(thread, &vfst); | |
3214 if (trusted) return -1; | |
3215 | |
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3216 Method* m = vfst.method(); |
0 | 3217 if (!m->is_native()) { |
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3218 InstanceKlass* holder = m->method_holder(); |
0 | 3219 assert(holder->is_klass(), "just checking"); |
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3220 oop loader = holder->class_loader(); |
0 | 3221 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3222 return depth; | |
3223 } | |
3224 depth++; | |
3225 } | |
3226 } | |
3227 return -1; | |
3228 JVM_END | |
3229 | |
3230 | |
3231 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3232 | |
3233 | |
3234 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3235 JVMWrapper("JVM_GetSystemPackage"); | |
3236 ResourceMark rm(THREAD); | |
3237 JvmtiVMObjectAllocEventCollector oam; | |
3238 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3239 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3240 return (jstring) JNIHandles::make_local(result); | |
3241 JVM_END | |
3242 | |
3243 | |
3244 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3245 JVMWrapper("JVM_GetSystemPackages"); | |
3246 JvmtiVMObjectAllocEventCollector oam; | |
3247 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3248 return (jobjectArray) JNIHandles::make_local(result); | |
3249 JVM_END | |
3250 | |
3251 | |
3252 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3253 | |
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3254 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3255 if (current_class == NULL) { |
3256 return true; | |
3257 } | |
3258 if ((current_class == field_class) || access.is_public()) { | |
3259 return true; | |
3260 } | |
3261 | |
3262 if (access.is_protected()) { | |
3263 // See if current_class is a subclass of field_class | |
6983 | 3264 if (current_class->is_subclass_of(field_class)) { |
0 | 3265 return true; |
3266 } | |
3267 } | |
3268 | |
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3269 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3270 } |
3271 | |
3272 | |
3273 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3274 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3275 JVMWrapper("JVM_AllocateNewObject"); | |
3276 JvmtiVMObjectAllocEventCollector oam; | |
3277 // Receiver is not used | |
3278 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3279 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3280 | |
3281 // Cannot instantiate primitive types | |
3282 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3283 ResourceMark rm(THREAD); | |
3284 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3285 } | |
3286 | |
3287 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3288 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3289 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3290 ResourceMark rm(THREAD); |
3291 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3292 } | |
3293 | |
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3294 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3295 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3296 |
3297 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3298 | |
3299 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3300 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3301 | |
3302 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3303 curr_klass->initialize(CHECK_NULL); | |
3304 | |
3305 methodHandle m (THREAD, | |
3306 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3307 vmSymbols::void_method_signature())); | |
3308 if (m.is_null()) { | |
3309 ResourceMark rm(THREAD); | |
3310 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3311 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3312 vmSymbols::object_initializer_name(), |
3313 vmSymbols::void_method_signature())); | |
3314 } | |
3315 | |
3316 if (curr_klass == init_klass && !m->is_public()) { | |
3317 // Calling the constructor for class 'curr_klass'. | |
3318 // Only allow calls to a public no-arg constructor. | |
3319 // This path corresponds to creating an Externalizable object. | |
3320 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3321 } | |
3322 | |
3323 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3324 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3325 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3326 } | |
3327 | |
3328 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3329 // Call constructor m. This might call a constructor higher up in the hierachy | |
3330 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3331 | |
3332 return JNIHandles::make_local(obj()); | |
3333 JVM_END | |
3334 | |
3335 | |
3336 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3337 JVMWrapper("JVM_AllocateNewArray"); | |
3338 JvmtiVMObjectAllocEventCollector oam; | |
3339 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3340 | |
3341 if (java_lang_Class::is_primitive(mirror)) { | |
3342 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3343 } | |
6725
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changeset
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3344 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3345 oop result; |
3346 | |
6725
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diff
changeset
|
3347 if (k->oop_is_typeArray()) { |
0 | 3348 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3349 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
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changeset
|
3350 } else if (k->oop_is_objArray()) { |
0 | 3351 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3352 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3353 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3354 result = oak->allocate(length, CHECK_NULL); | |
3355 } else { | |
3356 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3357 } | |
3358 return JNIHandles::make_local(env, result); | |
3359 JVM_END | |
3360 | |
3361 | |
3362 // Return the first non-null class loader up the execution stack, or null | |
3363 // if only code from the null class loader is on the stack. | |
3364 | |
3365 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3366 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3367 // UseNewReflection | |
3368 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3369 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3370 if (loader != NULL) { |
3371 return JNIHandles::make_local(env, loader); | |
3372 } | |
3373 } | |
3374 return NULL; | |
3375 JVM_END | |
3376 | |
3377 | |
3378 // Load a class relative to the most recent class on the stack with a non-null | |
3379 // classloader. | |
3380 // This function has been deprecated and should not be considered part of the | |
3381 // specified JVM interface. | |
3382 | |
3383 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3384 jclass currClass, jstring currClassName)) | |
3385 JVMWrapper("JVM_LoadClass0"); | |
3386 // Receiver is not used | |
3387 ResourceMark rm(THREAD); | |
3388 | |
3389 // Class name argument is not guaranteed to be in internal format | |
3390 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3391 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3392 | |
3393 const char* str = java_lang_String::as_utf8_string(string()); | |
3394 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3395 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3396 // It's impossible to create this class; the name cannot fit |
3397 // into the constant pool. | |
3398 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3399 } | |
3400 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3401 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3402 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3403 // Find the most recent class on the stack with a non-null classloader | |
3404 oop loader = NULL; | |
3405 oop protection_domain = NULL; | |
3406 if (curr_klass.is_null()) { | |
3407 for (vframeStream vfst(thread); | |
3408 !vfst.at_end() && loader == NULL; | |
3409 vfst.next()) { | |
3410 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
|
3411 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
|
3412 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3413 protection_domain = holder->protection_domain(); |
0 | 3414 } |
3415 } | |
3416 } else { | |
6725
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|
3417 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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changeset
|
3418 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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changeset
|
3419 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3420 } |
3421 Handle h_loader(THREAD, loader); | |
3422 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3423 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
|
3424 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3425 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
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diff
changeset
|
3426 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
|
3427 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3428 return result; |
0 | 3429 JVM_END |
3430 | |
3431 | |
3432 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3433 | |
3434 | |
3435 // resolve array handle and check arguments | |
3436 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3437 if (arr == NULL) { | |
3438 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3439 } | |
3440 oop a = JNIHandles::resolve_non_null(arr); | |
6725
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changeset
|
3441 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3442 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3443 } | |
3444 return arrayOop(a); | |
3445 } | |
3446 | |
3447 | |
3448 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3449 JVMWrapper("JVM_GetArrayLength"); | |
3450 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3451 return a->length(); | |
3452 JVM_END | |
3453 | |
3454 | |
3455 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3456 JVMWrapper("JVM_Array_Get"); | |
3457 JvmtiVMObjectAllocEventCollector oam; | |
3458 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3459 jvalue value; | |
3460 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3461 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3462 return JNIHandles::make_local(env, box); | |
3463 JVM_END | |
3464 | |
3465 | |
3466 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3467 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3468 jvalue value; | |
3469 value.i = 0; // to initialize value before getting used in CHECK | |
3470 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3471 assert(a->is_typeArray(), "just checking"); | |
3472 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3473 BasicType wide_type = (BasicType) wCode; | |
3474 if (type != wide_type) { | |
3475 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3476 } | |
3477 return value; | |
3478 JVM_END | |
3479 | |
3480 | |
3481 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3482 JVMWrapper("JVM_SetArrayElement"); | |
3483 arrayOop a = check_array(env, arr, false, CHECK); | |
3484 oop box = JNIHandles::resolve(val); | |
3485 jvalue value; | |
3486 value.i = 0; // to initialize value before getting used in CHECK | |
3487 BasicType value_type; | |
3488 if (a->is_objArray()) { | |
3489 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3490 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3491 } else { | |
3492 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3493 } | |
3494 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3495 JVM_END | |
3496 | |
3497 | |
3498 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3499 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3500 arrayOop a = check_array(env, arr, true, CHECK); | |
3501 assert(a->is_typeArray(), "just checking"); | |
3502 BasicType value_type = (BasicType) vCode; | |
3503 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3504 JVM_END | |
3505 | |
3506 | |
3507 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3508 JVMWrapper("JVM_NewArray"); | |
3509 JvmtiVMObjectAllocEventCollector oam; | |
3510 oop element_mirror = JNIHandles::resolve(eltClass); | |
3511 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3512 return JNIHandles::make_local(env, result); | |
3513 JVM_END | |
3514 | |
3515 | |
3516 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3517 JVMWrapper("JVM_NewMultiArray"); | |
3518 JvmtiVMObjectAllocEventCollector oam; | |
3519 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3520 oop element_mirror = JNIHandles::resolve(eltClass); | |
3521 assert(dim_array->is_typeArray(), "just checking"); | |
3522 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3523 return JNIHandles::make_local(env, result); | |
3524 JVM_END | |
3525 | |
3526 | |
3527 // Networking library support //////////////////////////////////////////////////////////////////// | |
3528 | |
3529 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3530 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3531 return 0; |
0 | 3532 JVM_END |
3533 | |
3534 | |
3535 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3536 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3537 return os::socket(domain, type, protocol); |
0 | 3538 JVM_END |
3539 | |
3540 | |
3541 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3542 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3543 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3544 return os::socket_close(fd); |
0 | 3545 JVM_END |
3546 | |
3547 | |
3548 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3549 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3550 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3551 return os::socket_shutdown(fd, howto); |
0 | 3552 JVM_END |
3553 | |
3554 | |
3555 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3556 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3557 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3558 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3559 JVM_END |
3560 | |
3561 | |
3562 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3563 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3564 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3565 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3566 JVM_END |
3567 | |
3568 | |
3569 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3570 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3571 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3572 return os::timeout(fd, timeout); |
0 | 3573 JVM_END |
3574 | |
3575 | |
3576 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3577 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3578 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3579 return os::listen(fd, count); |
0 | 3580 JVM_END |
3581 | |
3582 | |
3583 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3584 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3585 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3586 return os::connect(fd, him, (socklen_t)len); |
0 | 3587 JVM_END |
3588 | |
3589 | |
3590 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3591 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3592 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3593 return os::bind(fd, him, (socklen_t)len); |
0 | 3594 JVM_END |
3595 | |
3596 | |
3597 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3598 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3599 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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4006
diff
changeset
|
3600 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3601 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3602 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3603 return result; |
0 | 3604 JVM_END |
3605 | |
3606 | |
3607 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3608 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3609 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3610 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3611 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
|
3612 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3613 return result; |
0 | 3614 JVM_END |
3615 | |
3616 | |
3617 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3618 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3619 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3620 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3621 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
|
3622 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3623 return result; |
0 | 3624 JVM_END |
3625 | |
3626 | |
3627 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3628 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3629 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3630 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3631 JVM_END |
3632 | |
3633 | |
3634 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3635 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3636 //%note jvm_r6 | |
1980
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diff
changeset
|
3637 return os::socket_available(fd, pbytes); |
0 | 3638 JVM_END |
3639 | |
3640 | |
3641 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3642 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3643 //%note jvm_r6 | |
4717
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phh
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4006
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|
3644 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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changeset
|
3645 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
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|
3646 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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|
3647 return result; |
0 | 3648 JVM_END |
3649 | |
3650 | |
3651 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3652 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3653 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
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|
3654 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3655 JVM_END |
3656 | |
4717
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diff
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|
3657 |
0 | 3658 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3659 JVMWrapper("JVM_GetHostName"); | |
1980
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diff
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|
3660 return os::get_host_name(name, namelen); |
828eafbd85cc
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diff
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|
3661 JVM_END |
0 | 3662 |
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|
3663 |
0 | 3664 // Library support /////////////////////////////////////////////////////////////////////////// |
3665 | |
3666 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3667 //%note jvm_ct | |
3668 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3669 char ebuf[1024]; | |
3670 void *load_result; | |
3671 { | |
3672 ThreadToNativeFromVM ttnfvm(thread); | |
1980
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diff
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|
3673 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3674 } |
3675 if (load_result == NULL) { | |
3676 char msg[1024]; | |
3677 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3678 // Since 'ebuf' may contain a string encoded using | |
3679 // platform encoding scheme, we need to pass | |
3680 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3681 // as the last argument. See bug 6367357. | |
3682 Handle h_exception = | |
3683 Exceptions::new_exception(thread, | |
3684 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3685 msg, Exceptions::unsafe_to_utf8); | |
3686 | |
3687 THROW_HANDLE_0(h_exception); | |
3688 } | |
3689 return load_result; | |
3690 JVM_END | |
3691 | |
3692 | |
3693 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3694 JVMWrapper("JVM_UnloadLibrary"); | |
1980
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diff
changeset
|
3695 os::dll_unload(handle); |
0 | 3696 JVM_END |
3697 | |
3698 | |
3699 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3700 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
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diff
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|
3701 return os::dll_lookup(handle, name); |
0 | 3702 JVM_END |
3703 | |
4717
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phh
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diff
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|
3704 |
0 | 3705 // Floating point support //////////////////////////////////////////////////////////////////// |
3706 | |
3707 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3708 JVMWrapper("JVM_IsNaN"); | |
3709 return g_isnan(a); | |
3710 JVM_END | |
3711 | |
3712 | |
3713 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3714 | |
3715 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3716 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3717 return Threads::is_supported_jni_version_including_1_1(version); | |
3718 JVM_END | |
3719 | |
3720 | |
3721 // String support /////////////////////////////////////////////////////////////////////////// | |
3722 | |
3723 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3724 JVMWrapper("JVM_InternString"); | |
3725 JvmtiVMObjectAllocEventCollector oam; | |
3726 if (str == NULL) return NULL; | |
3727 oop string = JNIHandles::resolve_non_null(str); | |
3728 oop result = StringTable::intern(string, CHECK_NULL); | |
3729 return (jstring) JNIHandles::make_local(env, result); | |
3730 JVM_END | |
3731 | |
3732 | |
3733 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3734 | |
3735 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3736 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3737 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3738 // that only works with java threads. | |
3739 | |
3740 | |
3741 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3742 VM_Exit::block_if_vm_exited(); | |
3743 JVMWrapper("JVM_RawMonitorCreate"); | |
3744 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3745 } | |
3746 | |
3747 | |
3748 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3749 VM_Exit::block_if_vm_exited(); | |
3750 JVMWrapper("JVM_RawMonitorDestroy"); | |
3751 delete ((Mutex*) mon); | |
3752 } | |
3753 | |
3754 | |
3755 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3756 VM_Exit::block_if_vm_exited(); | |
3757 JVMWrapper("JVM_RawMonitorEnter"); | |
3758 ((Mutex*) mon)->jvm_raw_lock(); | |
3759 return 0; | |
3760 } | |
3761 | |
3762 | |
3763 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3764 VM_Exit::block_if_vm_exited(); | |
3765 JVMWrapper("JVM_RawMonitorExit"); | |
3766 ((Mutex*) mon)->jvm_raw_unlock(); | |
3767 } | |
3768 | |
3769 | |
3770 // Support for Serialization | |
3771 | |
3772 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3773 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3774 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3775 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3776 | |
3777 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3778 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3779 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3780 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3781 | |
3782 | |
3783 void initialize_converter_functions() { | |
3784 if (JDK_Version::is_gte_jdk14x_version()) { | |
3785 // These functions only exist for compatibility with 1.3.1 and earlier | |
3786 return; | |
3787 } | |
3788 | |
3789 // called from universe_post_init() | |
3790 assert( | |
3791 int_bits_to_float_fn == NULL && | |
3792 long_bits_to_double_fn == NULL && | |
3793 float_to_int_bits_fn == NULL && | |
3794 double_to_long_bits_fn == NULL , | |
3795 "initialization done twice" | |
3796 ); | |
3797 // initialize | |
3798 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3799 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3800 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3801 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3802 // verify | |
3803 assert( | |
3804 int_bits_to_float_fn != NULL && | |
3805 long_bits_to_double_fn != NULL && | |
3806 float_to_int_bits_fn != NULL && | |
3807 double_to_long_bits_fn != NULL , | |
3808 "initialization failed" | |
3809 ); | |
3810 } | |
3811 | |
3812 | |
3813 // Serialization | |
3814 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3815 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3816 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3817 | |
3818 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3819 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3820 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3821 oop o = JNIHandles::resolve(obj); | |
3822 | |
3823 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3824 THROW(vmSymbols::java_lang_NullPointerException()); | |
3825 } | |
3826 | |
3827 jsize nfids = fids->length(); | |
3828 if (nfids == 0) return; | |
3829 | |
3830 if (tcodes->length() < nfids) { | |
3831 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3832 } | |
3833 | |
3834 jsize off = 0; | |
3835 /* loop through fields, setting values */ | |
3836 for (jsize i = 0; i < nfids; i++) { | |
3837 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3838 int field_offset; | |
3839 if (fid != NULL) { | |
3840 // NULL is a legal value for fid, but retrieving the field offset | |
3841 // trigger assertion in that case | |
3842 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3843 } | |
3844 | |
3845 switch (tcodes->char_at(i)) { | |
3846 case 'Z': | |
3847 if (fid != NULL) { | |
3848 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3849 o->bool_field_put(field_offset, val); | |
3850 } | |
3851 off++; | |
3852 break; | |
3853 | |
3854 case 'B': | |
3855 if (fid != NULL) { | |
3856 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3857 } | |
3858 off++; | |
3859 break; | |
3860 | |
3861 case 'C': | |
3862 if (fid != NULL) { | |
3863 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3864 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3865 o->char_field_put(field_offset, val); | |
3866 } | |
3867 off += 2; | |
3868 break; | |
3869 | |
3870 case 'S': | |
3871 if (fid != NULL) { | |
3872 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3873 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3874 o->short_field_put(field_offset, val); | |
3875 } | |
3876 off += 2; | |
3877 break; | |
3878 | |
3879 case 'I': | |
3880 if (fid != NULL) { | |
3881 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3882 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3883 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3884 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3885 o->int_field_put(field_offset, ival); | |
3886 } | |
3887 off += 4; | |
3888 break; | |
3889 | |
3890 case 'F': | |
3891 if (fid != NULL) { | |
3892 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3893 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3894 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3895 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3896 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
3897 o->float_field_put(field_offset, fval); | |
3898 } | |
3899 off += 4; | |
3900 break; | |
3901 | |
3902 case 'J': | |
3903 if (fid != NULL) { | |
3904 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3905 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3906 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3907 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3908 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3909 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3910 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3911 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3912 o->long_field_put(field_offset, lval); | |
3913 } | |
3914 off += 8; | |
3915 break; | |
3916 | |
3917 case 'D': | |
3918 if (fid != NULL) { | |
3919 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3920 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3921 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3922 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3923 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3924 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3925 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3926 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3927 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
3928 o->double_field_put(field_offset, dval); | |
3929 } | |
3930 off += 8; | |
3931 break; | |
3932 | |
3933 default: | |
3934 // Illegal typecode | |
3935 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3936 } | |
3937 } | |
3938 JVM_END | |
3939 | |
3940 | |
3941 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3942 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3943 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3944 | |
3945 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3946 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3947 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3948 oop o = JNIHandles::resolve(obj); | |
3949 | |
3950 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3951 THROW(vmSymbols::java_lang_NullPointerException()); | |
3952 } | |
3953 | |
3954 jsize nfids = fids->length(); | |
3955 if (nfids == 0) return; | |
3956 | |
3957 if (tcodes->length() < nfids) { | |
3958 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3959 } | |
3960 | |
3961 /* loop through fields, fetching values */ | |
3962 jsize off = 0; | |
3963 for (jsize i = 0; i < nfids; i++) { | |
3964 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3965 if (fid == NULL) { | |
3966 THROW(vmSymbols::java_lang_NullPointerException()); | |
3967 } | |
3968 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3969 | |
3970 switch (tcodes->char_at(i)) { | |
3971 case 'Z': | |
3972 { | |
3973 jboolean val = o->bool_field(field_offset); | |
3974 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
3975 } | |
3976 break; | |
3977 | |
3978 case 'B': | |
3979 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
3980 break; | |
3981 | |
3982 case 'C': | |
3983 { | |
3984 jchar val = o->char_field(field_offset); | |
3985 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3986 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3987 } | |
3988 break; | |
3989 | |
3990 case 'S': | |
3991 { | |
3992 jshort val = o->short_field(field_offset); | |
3993 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3994 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3995 } | |
3996 break; | |
3997 | |
3998 case 'I': | |
3999 { | |
4000 jint val = o->int_field(field_offset); | |
4001 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4002 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4003 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4004 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4005 } | |
4006 break; | |
4007 | |
4008 case 'F': | |
4009 { | |
4010 jfloat fval = o->float_field(field_offset); | |
4011 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
4012 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
4013 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
4014 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
4015 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
4016 } | |
4017 break; | |
4018 | |
4019 case 'J': | |
4020 { | |
4021 jlong val = o->long_field(field_offset); | |
4022 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
4023 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
4024 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
4025 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
4026 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4027 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4028 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4029 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4030 } | |
4031 break; | |
4032 | |
4033 case 'D': | |
4034 { | |
4035 jdouble dval = o->double_field(field_offset); | |
4036 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
4037 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
4038 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
4039 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
4040 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
4041 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
4042 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
4043 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
4044 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4045 } | |
4046 break; | |
4047 | |
4048 default: | |
4049 // Illegal typecode | |
4050 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4051 } | |
4052 } | |
4053 JVM_END | |
4054 | |
4055 | |
4056 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4057 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
4058 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4059 // Security Note: |
4060 // The Java level wrapper will perform the necessary security check allowing | |
4061 // us to pass the NULL as the initiating class loader. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
4062 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
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875
diff
changeset
|
4063 |
0 | 4064 KlassHandle klass_handle(THREAD, klass); |
4065 // Check if we should initialize the class | |
4066 if (init && klass_handle->oop_is_instance()) { | |
4067 klass_handle->initialize(CHECK_NULL); | |
4068 } | |
4069 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4070 } | |
4071 | |
4072 | |
4073 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4074 | |
4075 #ifndef PRODUCT | |
4076 | |
4077 extern "C" { | |
4078 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4079 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4080 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4081 } | |
4082 | |
4083 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4084 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4085 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
4086 JVM_END | |
4087 | |
4088 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4089 JVMWrapper("JVM_AccessVMIntFlag"); | |
4090 intx v; | |
4091 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4092 *value = (jint)v; | |
4093 return result; | |
4094 JVM_END | |
4095 | |
4096 | |
4097 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4098 JVMWrapper("JVM_VMBreakPoint"); | |
4099 oop the_obj = JNIHandles::resolve(obj); | |
4100 BREAKPOINT; | |
4101 JVM_END | |
4102 | |
4103 | |
4104 #endif | |
4105 | |
4106 | |
4107 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4108 | |
4109 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4110 JVMWrapper("JVM_InvokeMethod"); | |
4111 Handle method_handle; | |
4112 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4113 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4114 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4115 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4116 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4117 jobject res = JNIHandles::make_local(env, result); | |
4118 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4119 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4120 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4121 if (java_lang_Class::is_primitive(ret_type)) { | |
4122 // Only for primitive type vm allocates memory for java object. | |
4123 // See box() method. | |
4124 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4125 } | |
4126 } | |
4127 return res; | |
4128 } else { | |
4129 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4130 } | |
4131 JVM_END | |
4132 | |
4133 | |
4134 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4135 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4136 oop constructor_mirror = JNIHandles::resolve(c); | |
4137 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4138 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4139 jobject res = JNIHandles::make_local(env, result); | |
4140 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4141 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4142 } | |
4143 return res; | |
4144 JVM_END | |
4145 | |
4146 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4147 | |
4148 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4149 JVMWrapper("JVM_SupportsCX8"); | |
4150 return VM_Version::supports_cx8(); | |
4151 JVM_END | |
4152 | |
4153 | |
4154 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4155 JVMWrapper("JVM_CX8Field"); | |
4156 jlong res; | |
4157 oop o = JNIHandles::resolve(obj); | |
4158 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4159 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4160 | |
4161 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4162 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4163 | |
4164 return res == oldVal; | |
4165 JVM_END | |
4166 | |
116
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4167 // DTrace /////////////////////////////////////////////////////////////////// |
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4168 |
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4169 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4170 JVMWrapper("JVM_DTraceGetVersion"); |
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4171 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4172 JVM_END |
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4173 |
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4174 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4175 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4176 JVM_DTraceProvider* providers)) |
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4177 JVMWrapper("JVM_DTraceActivate"); |
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4178 return DTraceJSDT::activate( |
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4179 version, module_name, providers_count, providers, CHECK_0); |
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4180 JVM_END |
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4181 |
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4182 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4183 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4184 return DTraceJSDT::is_probe_enabled(method); |
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4185 JVM_END |
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4186 |
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4187 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4188 JVMWrapper("JVM_DTraceDispose"); |
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4189 DTraceJSDT::dispose(handle); |
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4190 JVM_END |
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4191 |
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4192 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4193 JVMWrapper("JVM_DTraceIsSupported"); |
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4194 return DTraceJSDT::is_supported(); |
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4195 JVM_END |
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4196 |
0 | 4197 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4198 // jvmti agent threads, and JNI attaching threads are skipped) | |
4199 // See CR 6404306 regarding JNI attaching threads | |
4200 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4201 ResourceMark rm(THREAD); | |
4202 ThreadsListEnumerator tle(THREAD, false, false); | |
4203 JvmtiVMObjectAllocEventCollector oam; | |
4204 | |
4205 int num_threads = tle.num_threads(); | |
1142 | 4206 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4207 objArrayHandle threads_ah(THREAD, r); |
4208 | |
4209 for (int i = 0; i < num_threads; i++) { | |
4210 Handle h = tle.get_threadObj(i); | |
4211 threads_ah->obj_at_put(i, h()); | |
4212 } | |
4213 | |
4214 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4215 JVM_END | |
4216 | |
4217 | |
4218 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4219 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4220 // the corresponding entry in the given threads array | |
4221 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4222 JVMWrapper("JVM_DumpThreads"); | |
4223 JvmtiVMObjectAllocEventCollector oam; | |
4224 | |
4225 // Check if threads is null | |
4226 if (threads == NULL) { | |
4227 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4228 } | |
4229 | |
4230 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4231 objArrayHandle ah(THREAD, a); | |
4232 int num_threads = ah->length(); | |
4233 // check if threads is non-empty array | |
4234 if (num_threads == 0) { | |
4235 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4236 } | |
4237 | |
4238 // check if threads is not an array of objects of Thread class | |
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4239 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4240 if (k != SystemDictionary::Thread_klass()) { |
0 | 4241 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4242 } | |
4243 | |
4244 ResourceMark rm(THREAD); | |
4245 | |
4246 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4247 for (int i = 0; i < num_threads; i++) { | |
4248 oop thread_obj = ah->obj_at(i); | |
4249 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4250 thread_handle_array->append(h); | |
4251 } | |
4252 | |
4253 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4254 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4255 | |
4256 JVM_END | |
4257 | |
4258 // JVM monitoring and management support | |
4259 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4260 return Management::get_jmm_interface(version); | |
4261 JVM_END | |
4262 | |
4263 // com.sun.tools.attach.VirtualMachine agent properties support | |
4264 // | |
4265 // Initialize the agent properties with the properties maintained in the VM | |
4266 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4267 JVMWrapper("JVM_InitAgentProperties"); | |
4268 ResourceMark rm; | |
4269 | |
4270 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4271 | |
4272 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4273 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4274 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4275 return properties; | |
4276 JVM_END | |
4277 | |
4278 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4279 { | |
4280 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4281 JvmtiVMObjectAllocEventCollector oam; | |
4282 | |
4283 if (ofClass == NULL) { | |
4284 return NULL; | |
4285 } | |
4286 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4287 // Special handling for primitive objects | |
4288 if (java_lang_Class::is_primitive(mirror())) { | |
4289 return NULL; | |
4290 } | |
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4291 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4292 if (!k->oop_is_instance()) { |
0 | 4293 return NULL; |
4294 } | |
4295 instanceKlassHandle ik_h(THREAD, k); | |
4296 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4297 if (encl_method_class_idx == 0) { | |
4298 return NULL; | |
4299 } | |
1142 | 4300 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4301 objArrayHandle dest(THREAD, dest_o); |
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4302 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4303 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4304 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4305 if (encl_method_method_idx != 0) { | |
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4306 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4307 extract_low_short_from_int( |
4308 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4309 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4310 dest->obj_at_put(1, str()); | |
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4311 sym = ik_h->constants()->symbol_at( |
0 | 4312 extract_high_short_from_int( |
4313 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4314 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4315 dest->obj_at_put(2, str()); | |
4316 } | |
4317 return (jobjectArray) JNIHandles::make_local(dest()); | |
4318 } | |
4319 JVM_END | |
4320 | |
4321 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4322 jint javaThreadState)) | |
4323 { | |
4324 // If new thread states are added in future JDK and VM versions, | |
4325 // this should check if the JDK version is compatible with thread | |
4326 // states supported by the VM. Return NULL if not compatible. | |
4327 // | |
4328 // This function must map the VM java_lang_Thread::ThreadStatus | |
4329 // to the Java thread state that the JDK supports. | |
4330 // | |
4331 | |
4332 typeArrayHandle values_h; | |
4333 switch (javaThreadState) { | |
4334 case JAVA_THREAD_STATE_NEW : { | |
4335 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4336 values_h = typeArrayHandle(THREAD, r); | |
4337 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4338 break; | |
4339 } | |
4340 case JAVA_THREAD_STATE_RUNNABLE : { | |
4341 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4342 values_h = typeArrayHandle(THREAD, r); | |
4343 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4344 break; | |
4345 } | |
4346 case JAVA_THREAD_STATE_BLOCKED : { | |
4347 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4348 values_h = typeArrayHandle(THREAD, r); | |
4349 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4350 break; | |
4351 } | |
4352 case JAVA_THREAD_STATE_WAITING : { | |
4353 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4354 values_h = typeArrayHandle(THREAD, r); | |
4355 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4356 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4357 break; | |
4358 } | |
4359 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4360 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4361 values_h = typeArrayHandle(THREAD, r); | |
4362 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4363 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4364 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4365 break; | |
4366 } | |
4367 case JAVA_THREAD_STATE_TERMINATED : { | |
4368 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4369 values_h = typeArrayHandle(THREAD, r); | |
4370 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4371 break; | |
4372 } | |
4373 default: | |
4374 // Unknown state - probably incompatible JDK version | |
4375 return NULL; | |
4376 } | |
4377 | |
4378 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4379 } | |
4380 JVM_END | |
4381 | |
4382 | |
4383 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4384 jint javaThreadState, | |
4385 jintArray values)) | |
4386 { | |
4387 // If new thread states are added in future JDK and VM versions, | |
4388 // this should check if the JDK version is compatible with thread | |
4389 // states supported by the VM. Return NULL if not compatible. | |
4390 // | |
4391 // This function must map the VM java_lang_Thread::ThreadStatus | |
4392 // to the Java thread state that the JDK supports. | |
4393 // | |
4394 | |
4395 ResourceMark rm; | |
4396 | |
4397 // Check if threads is null | |
4398 if (values == NULL) { | |
4399 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4400 } | |
4401 | |
4402 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4403 typeArrayHandle values_h(THREAD, v); | |
4404 | |
4405 objArrayHandle names_h; | |
4406 switch (javaThreadState) { | |
4407 case JAVA_THREAD_STATE_NEW : { | |
4408 assert(values_h->length() == 1 && | |
4409 values_h->int_at(0) == java_lang_Thread::NEW, | |
4410 "Invalid threadStatus value"); | |
4411 | |
1142 | 4412 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4413 1, /* only 1 substate */ |
4414 CHECK_NULL); | |
4415 names_h = objArrayHandle(THREAD, r); | |
4416 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4417 names_h->obj_at_put(0, name()); | |
4418 break; | |
4419 } | |
4420 case JAVA_THREAD_STATE_RUNNABLE : { | |
4421 assert(values_h->length() == 1 && | |
4422 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4423 "Invalid threadStatus value"); | |
4424 | |
1142 | 4425 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4426 1, /* only 1 substate */ |
4427 CHECK_NULL); | |
4428 names_h = objArrayHandle(THREAD, r); | |
4429 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4430 names_h->obj_at_put(0, name()); | |
4431 break; | |
4432 } | |
4433 case JAVA_THREAD_STATE_BLOCKED : { | |
4434 assert(values_h->length() == 1 && | |
4435 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4436 "Invalid threadStatus value"); | |
4437 | |
1142 | 4438 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4439 1, /* only 1 substate */ |
4440 CHECK_NULL); | |
4441 names_h = objArrayHandle(THREAD, r); | |
4442 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4443 names_h->obj_at_put(0, name()); | |
4444 break; | |
4445 } | |
4446 case JAVA_THREAD_STATE_WAITING : { | |
4447 assert(values_h->length() == 2 && | |
4448 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4449 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4450 "Invalid threadStatus value"); | |
1142 | 4451 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4452 2, /* number of substates */ |
4453 CHECK_NULL); | |
4454 names_h = objArrayHandle(THREAD, r); | |
4455 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4456 CHECK_NULL); | |
4457 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4458 CHECK_NULL); | |
4459 names_h->obj_at_put(0, name0()); | |
4460 names_h->obj_at_put(1, name1()); | |
4461 break; | |
4462 } | |
4463 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4464 assert(values_h->length() == 3 && | |
4465 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4466 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4467 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4468 "Invalid threadStatus value"); | |
1142 | 4469 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4470 3, /* number of substates */ |
4471 CHECK_NULL); | |
4472 names_h = objArrayHandle(THREAD, r); | |
4473 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4474 CHECK_NULL); | |
4475 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4476 CHECK_NULL); | |
4477 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4478 CHECK_NULL); | |
4479 names_h->obj_at_put(0, name0()); | |
4480 names_h->obj_at_put(1, name1()); | |
4481 names_h->obj_at_put(2, name2()); | |
4482 break; | |
4483 } | |
4484 case JAVA_THREAD_STATE_TERMINATED : { | |
4485 assert(values_h->length() == 1 && | |
4486 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4487 "Invalid threadStatus value"); | |
1142 | 4488 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4489 1, /* only 1 substate */ |
4490 CHECK_NULL); | |
4491 names_h = objArrayHandle(THREAD, r); | |
4492 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4493 names_h->obj_at_put(0, name()); | |
4494 break; | |
4495 } | |
4496 default: | |
4497 // Unknown state - probably incompatible JDK version | |
4498 return NULL; | |
4499 } | |
4500 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4501 } | |
4502 JVM_END | |
4503 | |
4504 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4505 { | |
4506 memset(info, 0, sizeof(info_size)); | |
4507 | |
4508 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4509 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4510 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4511 | |
4512 // when we add a new capability in the jvm_version_info struct, we should also | |
4513 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4514 // counter defined in runtimeService.cpp. | |
4515 info->is_attachable = AttachListener::is_attach_supported(); | |
4516 #ifdef KERNEL | |
4517 info->is_kernel_jvm = 1; // true; | |
4518 #else // KERNEL | |
4519 info->is_kernel_jvm = 0; // false; | |
4520 #endif // KERNEL | |
4521 } | |
4522 JVM_END |