Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 18136:52b8826ef035
Backout wrong change in 2a69cbe850a8
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Tue, 21 Oct 2014 10:20:33 +0200 |
parents | 2a69cbe850a8 |
children | 7848fc12602b |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
14411 | 79 #ifdef TARGET_OS_FAMILY_aix |
80 # include "jvm_aix.h" | |
81 #endif | |
3960 | 82 #ifdef TARGET_OS_FAMILY_bsd |
83 # include "jvm_bsd.h" | |
84 #endif | |
1972 | 85 |
0 | 86 #include <errno.h> |
87 | |
4006 | 88 #ifndef USDT2 |
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89 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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90 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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91 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 92 #endif /* !USDT2 */ |
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93 |
0 | 94 /* |
95 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
96 such ctors and calls MUST NOT come between an oop declaration/init and its | |
97 usage because if objects are move this may cause various memory stomps, bus | |
98 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
99 failures": | |
100 | |
101 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
102 JVMWrapper("JVM_GetClassDeclaredFields"); | |
103 | |
104 // Object address to be held directly in mirror & not visible to GC | |
105 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
106 | |
107 // If this ctor can hit a safepoint, moving objects around, then | |
108 ComplexConstructor foo; | |
109 | |
110 // Boom! mirror may point to JUNK instead of the intended object | |
111 (some dereference of mirror) | |
112 | |
113 // Here's another call that may block for GC, making mirror stale | |
114 MutexLocker ml(some_lock); | |
115 | |
116 // And here's an initializer that can result in a stale oop | |
117 // all in one step. | |
118 oop o = call_that_can_throw_exception(TRAPS); | |
119 | |
120 | |
121 The solution is to keep the oop declaration BELOW the ctor or function | |
122 call that might cause a GC, do another resolve to reassign the oop, or | |
123 consider use of a Handle instead of an oop so there is immunity from object | |
124 motion. But note that the "QUICK" entries below do not have a handlemark | |
125 and thus can only support use of handles passed in. | |
126 */ | |
127 | |
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128 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 129 ResourceMark rm; |
130 int line_number = -1; | |
131 const char * source_file = NULL; | |
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132 const char * trace = "explicit"; |
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133 InstanceKlass* caller = NULL; |
0 | 134 JavaThread* jthread = JavaThread::current(); |
135 if (jthread->has_last_Java_frame()) { | |
136 vframeStream vfst(jthread); | |
137 | |
138 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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139 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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140 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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141 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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142 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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143 |
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144 Method* last_caller = NULL; |
0 | 145 |
146 while (!vfst.at_end()) { | |
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147 Method* m = vfst.method(); |
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148 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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149 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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150 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 151 break; |
152 } | |
153 last_caller = m; | |
154 vfst.next(); | |
155 } | |
156 // if this is called from Class.forName0 and that is called from Class.forName, | |
157 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
158 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
159 bool found_it = false; | |
160 if (!vfst.at_end() && | |
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161 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 162 vfst.method()->name() == vmSymbols::forName0_name()) { |
163 vfst.next(); | |
164 if (!vfst.at_end() && | |
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165 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 166 vfst.method()->name() == vmSymbols::forName_name()) { |
167 vfst.next(); | |
168 found_it = true; | |
169 } | |
170 } else if (last_caller != NULL && | |
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171 last_caller->method_holder()->name() == |
0 | 172 vmSymbols::java_lang_ClassLoader() && |
173 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
174 last_caller->name() == vmSymbols::loadClass_name())) { | |
175 found_it = true; | |
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176 } else if (!vfst.at_end()) { |
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177 if (vfst.method()->is_native()) { |
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178 // JNI call |
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179 found_it = true; |
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180 } |
0 | 181 } |
182 if (found_it && !vfst.at_end()) { | |
183 // found the caller | |
184 caller = vfst.method()->method_holder(); | |
185 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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186 if (line_number == -1) { |
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187 // show method name if it's a native method |
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188 trace = vfst.method()->name_and_sig_as_C_string(); |
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189 } |
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190 Symbol* s = caller->source_file_name(); |
0 | 191 if (s != NULL) { |
192 source_file = s->as_C_string(); | |
193 } | |
194 } | |
195 } | |
196 if (caller != NULL) { | |
197 if (to_class != caller) { | |
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198 const char * from = caller->external_name(); |
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199 const char * to = to_class->external_name(); |
0 | 200 // print in a single call to reduce interleaving between threads |
201 if (source_file != NULL) { | |
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202 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 203 } else { |
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204 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 205 } |
206 } | |
207 } | |
208 } | |
209 | |
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210 void trace_class_resolution(Klass* to_class) { |
0 | 211 EXCEPTION_MARK; |
212 trace_class_resolution_impl(to_class, THREAD); | |
213 if (HAS_PENDING_EXCEPTION) { | |
214 CLEAR_PENDING_EXCEPTION; | |
215 } | |
216 } | |
217 | |
218 // Wrapper to trace JVM functions | |
219 | |
220 #ifdef ASSERT | |
221 class JVMTraceWrapper : public StackObj { | |
222 public: | |
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223 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
0 | 224 if (TraceJVMCalls) { |
225 va_list ap; | |
226 va_start(ap, format); | |
227 tty->print("JVM "); | |
228 tty->vprint_cr(format, ap); | |
229 va_end(ap); | |
230 } | |
231 } | |
232 }; | |
233 | |
234 Histogram* JVMHistogram; | |
235 volatile jint JVMHistogram_lock = 0; | |
236 | |
237 class JVMHistogramElement : public HistogramElement { | |
238 public: | |
239 JVMHistogramElement(const char* name); | |
240 }; | |
241 | |
242 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
243 _name = elementName; | |
244 uintx count = 0; | |
245 | |
246 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
247 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
248 count +=1; | |
249 if ( (WarnOnStalledSpinLock > 0) | |
250 && (count % WarnOnStalledSpinLock == 0)) { | |
251 warning("JVMHistogram_lock seems to be stalled"); | |
252 } | |
253 } | |
254 } | |
255 | |
256 if(JVMHistogram == NULL) | |
257 JVMHistogram = new Histogram("JVM Call Counts",100); | |
258 | |
259 JVMHistogram->add_element(this); | |
260 Atomic::dec(&JVMHistogram_lock); | |
261 } | |
262 | |
263 #define JVMCountWrapper(arg) \ | |
264 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
265 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
266 | |
267 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
268 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
269 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
270 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
271 #else | |
272 #define JVMWrapper(arg1) | |
273 #define JVMWrapper2(arg1, arg2) | |
274 #define JVMWrapper3(arg1, arg2, arg3) | |
275 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
276 #endif | |
277 | |
278 | |
279 // Interface version ///////////////////////////////////////////////////////////////////// | |
280 | |
281 | |
282 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
283 return JVM_INTERFACE_VERSION; | |
284 JVM_END | |
285 | |
286 | |
287 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
288 | |
289 | |
290 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
291 JVMWrapper("JVM_CurrentTimeMillis"); | |
292 return os::javaTimeMillis(); | |
293 JVM_END | |
294 | |
295 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
296 JVMWrapper("JVM_NanoTime"); | |
297 return os::javaTimeNanos(); | |
298 JVM_END | |
299 | |
300 | |
301 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
302 jobject dst, jint dst_pos, jint length)) | |
303 JVMWrapper("JVM_ArrayCopy"); | |
304 // Check if we have null pointers | |
305 if (src == NULL || dst == NULL) { | |
306 THROW(vmSymbols::java_lang_NullPointerException()); | |
307 } | |
308 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
309 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
310 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
311 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
312 // Do copy | |
6983 | 313 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 314 JVM_END |
315 | |
316 | |
317 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
318 JavaValue r(T_OBJECT); | |
319 // public synchronized Object put(Object key, Object value); | |
320 HandleMark hm(THREAD); | |
321 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
322 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
323 JavaCalls::call_virtual(&r, | |
324 props, | |
1142 | 325 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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326 vmSymbols::put_name(), |
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327 vmSymbols::object_object_object_signature(), |
0 | 328 key_str, |
329 value_str, | |
330 THREAD); | |
331 } | |
332 | |
333 | |
334 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
335 | |
336 | |
337 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
338 JVMWrapper("JVM_InitProperties"); | |
339 ResourceMark rm; | |
340 | |
341 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
342 | |
343 // System property list includes both user set via -D option and | |
344 // jvm system specific properties. | |
345 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
346 PUTPROP(props, p->key(), p->value()); | |
347 } | |
348 | |
349 // Convert the -XX:MaxDirectMemorySize= command line flag | |
350 // to the sun.nio.MaxDirectMemorySize property. | |
351 // Do this after setting user properties to prevent people | |
352 // from setting the value with a -D option, as requested. | |
353 { | |
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354 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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355 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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356 } else { |
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357 char as_chars[256]; |
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358 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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359 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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360 } |
0 | 361 } |
362 | |
363 // JVM monitoring and management support | |
364 // Add the sun.management.compiler property for the compiler's name | |
365 { | |
366 #undef CSIZE | |
367 #if defined(_LP64) || defined(_WIN64) | |
368 #define CSIZE "64-Bit " | |
369 #else | |
370 #define CSIZE | |
371 #endif // 64bit | |
372 | |
373 #ifdef TIERED | |
374 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
375 #else | |
376 #if defined(COMPILER1) | |
377 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
378 #elif defined(COMPILER2) | |
379 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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380 #elif defined(GRAAL) |
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381 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
0 | 382 #else |
383 const char* compiler_name = ""; | |
384 #endif // compilers | |
385 #endif // TIERED | |
386 | |
387 if (*compiler_name != '\0' && | |
388 (Arguments::mode() != Arguments::_int)) { | |
389 PUTPROP(props, "sun.management.compiler", compiler_name); | |
390 } | |
391 } | |
392 | |
393 return properties; | |
394 JVM_END | |
395 | |
396 | |
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397 /* |
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398 * Return the temporary directory that the VM uses for the attach |
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399 * and perf data files. |
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400 * |
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401 * It is important that this directory is well-known and the |
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402 * same for all VM instances. It cannot be affected by configuration |
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403 * variables such as java.io.tmpdir. |
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404 */ |
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405 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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406 JVMWrapper("JVM_GetTemporaryDirectory"); |
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407 HandleMark hm(THREAD); |
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408 const char* temp_dir = os::get_temp_directory(); |
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409 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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410 return (jstring) JNIHandles::make_local(env, h()); |
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411 JVM_END |
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412 |
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413 |
0 | 414 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
415 | |
416 extern volatile jint vm_created; | |
417 | |
418 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
419 if (vm_created != 0 && (code == 0)) { | |
420 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
421 Universe::run_finalizers_on_exit(); | |
422 } | |
423 before_exit(thread); | |
424 vm_exit(code); | |
425 JVM_END | |
426 | |
427 | |
428 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
429 before_exit(thread); | |
430 vm_exit(code); | |
431 JVM_END | |
432 | |
433 | |
434 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
435 register_on_exit_function(func); | |
436 JVM_END | |
437 | |
438 | |
439 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
440 JVMWrapper("JVM_GC"); | |
441 if (!DisableExplicitGC) { | |
442 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
443 } | |
444 JVM_END | |
445 | |
446 | |
447 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
448 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
449 return Universe::heap()->millis_since_last_gc(); | |
450 JVM_END | |
451 | |
452 | |
453 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
454 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
455 JVM_END | |
456 | |
457 | |
458 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
459 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
460 JVM_END | |
461 | |
462 static inline jlong convert_size_t_to_jlong(size_t val) { | |
463 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
464 NOT_LP64 (return (jlong)val;) | |
465 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
466 } | |
467 | |
468 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
469 JVMWrapper("JVM_TotalMemory"); | |
470 size_t n = Universe::heap()->capacity(); | |
471 return convert_size_t_to_jlong(n); | |
472 JVM_END | |
473 | |
474 | |
475 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
476 JVMWrapper("JVM_FreeMemory"); | |
477 CollectedHeap* ch = Universe::heap(); | |
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478 size_t n; |
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479 { |
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480 MutexLocker x(Heap_lock); |
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481 n = ch->capacity() - ch->used(); |
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482 } |
0 | 483 return convert_size_t_to_jlong(n); |
484 JVM_END | |
485 | |
486 | |
487 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
488 JVMWrapper("JVM_MaxMemory"); | |
489 size_t n = Universe::heap()->max_capacity(); | |
490 return convert_size_t_to_jlong(n); | |
491 JVM_END | |
492 | |
493 | |
494 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
495 JVMWrapper("JVM_ActiveProcessorCount"); | |
496 return os::active_processor_count(); | |
497 JVM_END | |
498 | |
499 | |
500 | |
501 // java.lang.Throwable ////////////////////////////////////////////////////// | |
502 | |
503 | |
504 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
505 JVMWrapper("JVM_FillInStackTrace"); | |
506 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
507 java_lang_Throwable::fill_in_stack_trace(exception); | |
508 JVM_END | |
509 | |
510 | |
511 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
512 JVMWrapper("JVM_GetStackTraceDepth"); | |
513 oop exception = JNIHandles::resolve(throwable); | |
514 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
515 JVM_END | |
516 | |
517 | |
518 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
519 JVMWrapper("JVM_GetStackTraceElement"); | |
520 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
521 oop exception = JNIHandles::resolve(throwable); | |
522 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
523 return JNIHandles::make_local(env, element); | |
524 JVM_END | |
525 | |
526 | |
527 // java.lang.Object /////////////////////////////////////////////// | |
528 | |
529 | |
530 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
531 JVMWrapper("JVM_IHashCode"); | |
532 // as implemented in the classic virtual machine; return 0 if object is NULL | |
533 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
534 JVM_END | |
535 | |
536 | |
537 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
538 JVMWrapper("JVM_MonitorWait"); | |
539 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
540 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
541 if (JvmtiExport::should_post_monitor_wait()) { | |
542 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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543 |
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544 // The current thread already owns the monitor and it has not yet |
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545 // been added to the wait queue so the current thread cannot be |
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546 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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547 // event handler cannot accidentally consume an unpark() meant for |
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548 // the ParkEvent associated with this ObjectMonitor. |
0 | 549 } |
550 ObjectSynchronizer::wait(obj, ms, CHECK); | |
551 JVM_END | |
552 | |
553 | |
554 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
555 JVMWrapper("JVM_MonitorNotify"); | |
556 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
557 ObjectSynchronizer::notify(obj, CHECK); | |
558 JVM_END | |
559 | |
560 | |
561 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
562 JVMWrapper("JVM_MonitorNotifyAll"); | |
563 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
564 ObjectSynchronizer::notifyall(obj, CHECK); | |
565 JVM_END | |
566 | |
567 | |
568 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
569 JVMWrapper("JVM_Clone"); | |
570 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
571 const KlassHandle klass (THREAD, obj->klass()); | |
572 JvmtiVMObjectAllocEventCollector oam; | |
573 | |
574 #ifdef ASSERT | |
575 // Just checking that the cloneable flag is set correct | |
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576 if (obj->is_array()) { |
0 | 577 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
578 } else { | |
579 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 580 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 581 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
582 } | |
583 #endif | |
584 | |
585 // Check if class of obj supports the Cloneable interface. | |
586 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
587 if (!klass->is_cloneable()) { | |
588 ResourceMark rm(THREAD); | |
589 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
590 } | |
591 | |
592 // Make shallow object copy | |
593 const int size = obj->size(); | |
594 oop new_obj = NULL; | |
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595 if (obj->is_array()) { |
0 | 596 const int length = ((arrayOop)obj())->length(); |
597 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
598 } else { | |
599 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
600 } | |
601 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
602 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
603 // be suspended in the middle of copying the pointer and end up with parts | |
604 // of two different pointers in the field. Subsequent dereferences will crash. | |
605 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
606 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
607 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
608 // The same is true of StubRoutines::object_copy and the various oop_copy | |
609 // variants, and of the code generated by the inline_native_clone intrinsic. | |
610 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
611 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
612 (size_t)align_object_size(size) / HeapWordsPerLong); | |
613 // Clear the header | |
614 new_obj->init_mark(); | |
615 | |
616 // Store check (mark entire object and let gc sort it out) | |
617 BarrierSet* bs = Universe::heap()->barrier_set(); | |
618 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
619 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
620 | |
621 // Caution: this involves a java upcall, so the clone should be | |
622 // "gc-robust" by this stage. | |
623 if (klass->has_finalizer()) { | |
624 assert(obj->is_instance(), "should be instanceOop"); | |
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625 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 626 } |
627 | |
628 return JNIHandles::make_local(env, oop(new_obj)); | |
629 JVM_END | |
630 | |
631 // java.lang.Compiler //////////////////////////////////////////////////// | |
632 | |
633 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
634 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
635 // functions are all silently ignored unless JVM warnings are printed. | |
636 | |
637 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
638 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
639 JVM_END | |
640 | |
641 | |
642 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
643 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
644 return JNI_FALSE; | |
645 JVM_END | |
646 | |
647 | |
648 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
649 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
650 return JNI_FALSE; | |
651 JVM_END | |
652 | |
653 | |
654 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
655 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
656 return JNI_FALSE; | |
657 JVM_END | |
658 | |
659 | |
660 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
661 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
662 return NULL; | |
663 JVM_END | |
664 | |
665 | |
666 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
667 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
668 JVM_END | |
669 | |
670 | |
671 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
672 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
673 JVM_END | |
674 | |
675 | |
676 | |
677 // Error message support ////////////////////////////////////////////////////// | |
678 | |
679 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
680 JVMWrapper("JVM_GetLastErrorString"); | |
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681 return (jint)os::lasterror(buf, len); |
0 | 682 JVM_END |
683 | |
684 | |
685 // java.io.File /////////////////////////////////////////////////////////////// | |
686 | |
687 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
688 JVMWrapper2("JVM_NativePath (%s)", path); | |
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689 return os::native_path(path); |
0 | 690 JVM_END |
691 | |
692 | |
693 // Misc. class handling /////////////////////////////////////////////////////////// | |
694 | |
695 | |
696 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
697 JVMWrapper("JVM_GetCallerClass"); | |
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698 |
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699 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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700 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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701 // temporarily for existing code to use until a replacement API is defined. |
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702 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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703 Klass* k = thread->security_get_caller_class(depth); |
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704 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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705 } |
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706 |
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707 // Getting the class of the caller frame. |
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708 // |
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709 // The call stack at this point looks something like this: |
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710 // |
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711 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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712 // [1] [ @CallerSensitive API.method ] |
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713 // [.] [ (skipped intermediate frames) ] |
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714 // [n] [ caller ] |
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715 vframeStream vfst(thread); |
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716 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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717 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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718 Method* m = vfst.method(); |
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719 assert(m != NULL, "sanity"); |
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720 switch (n) { |
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721 case 0: |
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722 // This must only be called from Reflection.getCallerClass |
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723 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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724 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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725 } |
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726 // fall-through |
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727 case 1: |
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728 // Frame 0 and 1 must be caller sensitive. |
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729 if (!m->caller_sensitive()) { |
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730 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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731 } |
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732 break; |
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733 default: |
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734 if (!m->is_ignored_by_security_stack_walk()) { |
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735 // We have reached the desired frame; return the holder class. |
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736 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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737 } |
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738 break; |
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739 } |
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740 } |
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741 return NULL; |
0 | 742 JVM_END |
743 | |
744 | |
745 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
746 JVMWrapper("JVM_FindPrimitiveClass"); | |
747 oop mirror = NULL; | |
748 BasicType t = name2type(utf); | |
749 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
750 mirror = Universe::java_mirror(t); | |
751 } | |
752 if (mirror == NULL) { | |
753 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
754 } else { | |
755 return (jclass) JNIHandles::make_local(env, mirror); | |
756 } | |
757 JVM_END | |
758 | |
759 | |
760 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
761 JVMWrapper("JVM_ResolveClass"); | |
762 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
763 JVM_END | |
764 | |
878
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765 |
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766 // Returns a class loaded by the bootstrap class loader; or null |
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767 // if not found. ClassNotFoundException is not thrown. |
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768 // |
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769 // Rationale behind JVM_FindClassFromBootLoader |
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770 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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771 // b> because of (a) java.dll has a direct dependecy on the unexported |
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772 // private symbol "_JVM_FindClassFromClassLoader@20". |
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773 // c> the launcher cannot use the private symbol as it dynamically opens |
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774 // the entry point, so if something changes, the launcher will fail |
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775 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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|
776 // stable exported interface. |
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777 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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778 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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779 // JVM_FindClassFromClassLoader and will not be backward compatible |
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780 // with older JDKs. |
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781 // Thus a public/stable exported entry point is the right solution, |
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782 // public here means public in linker semantics, and is exported only |
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783 // to the JDK, and is not intended to be a public API. |
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784 |
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785 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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786 const char* name)) |
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787 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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788 |
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789 // Java libraries should ensure that name is never null... |
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790 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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791 // It's impossible to create this class; the name cannot fit |
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|
792 // into the constant pool. |
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793 return NULL; |
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|
794 } |
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795 |
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796 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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797 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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798 if (k == NULL) { |
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799 return NULL; |
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|
800 } |
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|
801 |
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802 if (TraceClassResolution) { |
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803 trace_class_resolution(k); |
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804 } |
6983 | 805 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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806 JVM_END |
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807 |
18051 | 808 // Not used; JVM_FindClassFromCaller replaces this. |
878
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809 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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810 jboolean init, jobject loader, |
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811 jboolean throwError)) |
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812 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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813 throwError ? "error" : "exception"); |
388 | 814 // Java libraries should ensure that name is never null... |
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815 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 816 // It's impossible to create this class; the name cannot fit |
817 // into the constant pool. | |
818 if (throwError) { | |
819 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
820 } else { | |
821 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
822 } | |
823 } | |
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824 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 825 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
826 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
827 Handle(), throwError, THREAD); | |
828 | |
829 if (TraceClassResolution && result != NULL) { | |
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830 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 831 } |
832 return result; | |
0 | 833 JVM_END |
834 | |
18051 | 835 // Find a class with this name in this loader, using the caller's protection domain. |
836 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
837 jboolean init, jobject loader, | |
838 jclass caller)) | |
839 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
840 // Java libraries should ensure that name is never null... | |
841 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
842 // It's impossible to create this class; the name cannot fit | |
843 // into the constant pool. | |
844 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
845 } | |
846 | |
847 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
848 | |
849 oop loader_oop = JNIHandles::resolve(loader); | |
850 oop from_class = JNIHandles::resolve(caller); | |
851 oop protection_domain = NULL; | |
852 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
853 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
854 // thus no checkPackageAccess equivalence in the VM class loader. | |
855 // The caller is also passed as NULL by the java code if there is no security | |
856 // manager to avoid the performance cost of getting the calling class. | |
857 if (from_class != NULL && loader_oop != NULL) { | |
858 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
859 } | |
860 | |
861 Handle h_loader(THREAD, loader_oop); | |
862 Handle h_prot(THREAD, protection_domain); | |
863 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
864 h_prot, false, THREAD); | |
865 | |
866 if (TraceClassResolution && result != NULL) { | |
867 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
868 } | |
869 return result; | |
870 JVM_END | |
0 | 871 |
872 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
873 jboolean init, jclass from)) | |
874 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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875 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 876 // It's impossible to create this class; the name cannot fit |
877 // into the constant pool. | |
878 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
879 } | |
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880 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 881 oop from_class_oop = JNIHandles::resolve(from); |
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882 Klass* from_class = (from_class_oop == NULL) |
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883 ? (Klass*)NULL |
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884 : java_lang_Class::as_Klass(from_class_oop); |
0 | 885 oop class_loader = NULL; |
886 oop protection_domain = NULL; | |
887 if (from_class != NULL) { | |
6983 | 888 class_loader = from_class->class_loader(); |
889 protection_domain = from_class->protection_domain(); | |
0 | 890 } |
891 Handle h_loader(THREAD, class_loader); | |
892 Handle h_prot (THREAD, protection_domain); | |
893 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
894 h_prot, true, thread); | |
895 | |
896 if (TraceClassResolution && result != NULL) { | |
897 // this function is generally only used for class loading during verification. | |
898 ResourceMark rm; | |
899 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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900 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 901 const char * from_name = from_class->external_name(); |
0 | 902 |
903 oop mirror = JNIHandles::resolve_non_null(result); | |
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904 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 905 const char * to = to_class->external_name(); |
0 | 906 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
907 } | |
908 | |
909 return result; | |
910 JVM_END | |
911 | |
912 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
913 if (loader.is_null()) { | |
914 return; | |
915 } | |
916 | |
917 // check whether the current caller thread holds the lock or not. | |
918 // If not, increment the corresponding counter | |
919 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
920 ObjectSynchronizer::owner_self) { | |
921 counter->inc(); | |
922 } | |
923 } | |
924 | |
925 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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926 // and JVM_DefineClassWithSourceCond() |
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927 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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928 jobject loader, const jbyte *buf, |
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929 jsize len, jobject pd, const char *source, |
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930 jboolean verify, TRAPS) { |
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931 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 932 |
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933 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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934 JavaThread* jt = (JavaThread*) THREAD; |
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935 |
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936 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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937 ClassLoader::perf_define_appclass_selftime(), |
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938 ClassLoader::perf_define_appclasses(), |
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939 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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940 jt->get_thread_stat()->perf_timers_addr(), |
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941 PerfClassTraceTime::DEFINE_CLASS); |
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942 |
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943 if (UsePerfData) { |
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944 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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945 } |
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946 |
0 | 947 // Since exceptions can be thrown, class initialization can take place |
948 // if name is NULL no check for class name in .class stream has to be made. | |
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949 TempNewSymbol class_name = NULL; |
0 | 950 if (name != NULL) { |
951 const int str_len = (int)strlen(name); | |
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952 if (str_len > Symbol::max_length()) { |
0 | 953 // It's impossible to create this class; the name cannot fit |
954 // into the constant pool. | |
955 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
956 } | |
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957 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 958 } |
959 | |
960 ResourceMark rm(THREAD); | |
961 ClassFileStream st((u1*) buf, len, (char *)source); | |
962 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
963 if (UsePerfData) { | |
964 is_lock_held_by_thread(class_loader, | |
965 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
966 THREAD); | |
967 } | |
968 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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969 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 970 protection_domain, &st, |
973
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971 verify != 0, |
0 | 972 CHECK_NULL); |
973 | |
974 if (TraceClassResolution && k != NULL) { | |
975 trace_class_resolution(k); | |
976 } | |
977 | |
6983 | 978 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 979 } |
980 | |
981 | |
982 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
983 JVMWrapper2("JVM_DefineClass %s", name); | |
984 | |
973
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985 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 986 JVM_END |
987 | |
988 | |
989 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
990 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
991 | |
973
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992 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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993 JVM_END |
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994 |
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995 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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996 jobject loader, const jbyte *buf, |
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997 jsize len, jobject pd, |
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998 const char *source, jboolean verify)) |
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999 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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1000 |
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1001 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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1002 JVM_END |
0 | 1003 |
1004 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
1005 JVMWrapper("JVM_FindLoadedClass"); | |
1006 ResourceMark rm(THREAD); | |
1007 | |
1008 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
1009 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
1010 | |
1011 const char* str = java_lang_String::as_utf8_string(string()); | |
1012 // Sanity check, don't expect null | |
1013 if (str == NULL) return NULL; | |
1014 | |
1015 const int str_len = (int)strlen(str); | |
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1016 if (str_len > Symbol::max_length()) { |
0 | 1017 // It's impossible to create this class; the name cannot fit |
1018 // into the constant pool. | |
1019 return NULL; | |
1020 } | |
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1021 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 1022 |
1023 // Security Note: | |
1024 // The Java level wrapper will perform the necessary security check allowing | |
1025 // us to pass the NULL as the initiating class loader. | |
1026 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
1027 if (UsePerfData) { | |
1028 is_lock_held_by_thread(h_loader, | |
1029 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
1030 THREAD); | |
1031 } | |
1032 | |
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1033 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 1034 h_loader, |
1035 Handle(), | |
1036 CHECK_NULL); | |
1037 | |
1038 return (k == NULL) ? NULL : | |
6983 | 1039 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1040 JVM_END |
1041 | |
1042 | |
1043 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
1044 | |
1045 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
1046 assert (cls != NULL, "illegal class"); | |
1047 JVMWrapper("JVM_GetClassName"); | |
1048 JvmtiVMObjectAllocEventCollector oam; | |
1049 ResourceMark rm(THREAD); | |
1050 const char* name; | |
1051 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1052 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
1053 } else { | |
1054 // Consider caching interned string in Klass | |
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1055 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1056 assert(k->is_klass(), "just checking"); |
6983 | 1057 name = k->external_name(); |
0 | 1058 } |
1059 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1060 return (jstring) JNIHandles::make_local(env, result); | |
1061 JVM_END | |
1062 | |
1063 | |
1064 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1065 JVMWrapper("JVM_GetClassInterfaces"); | |
1066 JvmtiVMObjectAllocEventCollector oam; | |
1067 oop mirror = JNIHandles::resolve_non_null(cls); | |
1068 | |
1069 // Special handling for primitive objects | |
1070 if (java_lang_Class::is_primitive(mirror)) { | |
1071 // Primitive objects does not have any interfaces | |
1142 | 1072 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1073 return (jobjectArray) JNIHandles::make_local(env, r); |
1074 } | |
1075 | |
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1076 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1077 // Figure size of result array |
1078 int size; | |
1079 if (klass->oop_is_instance()) { | |
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1080 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1081 } else { |
1082 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1083 size = 2; | |
1084 } | |
1085 | |
1086 // Allocate result array | |
1142 | 1087 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1088 objArrayHandle result (THREAD, r); |
1089 // Fill in result | |
1090 if (klass->oop_is_instance()) { | |
1091 // Regular instance klass, fill in all local interfaces | |
1092 for (int index = 0; index < size; index++) { | |
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1093 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1094 result->obj_at_put(index, k->java_mirror()); |
0 | 1095 } |
1096 } else { | |
1097 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1098 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1099 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1100 } |
1101 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1102 JVM_END | |
1103 | |
1104 | |
1105 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1106 JVMWrapper("JVM_GetClassLoader"); | |
1107 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1108 return NULL; | |
1109 } | |
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1110 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1111 oop loader = k->class_loader(); |
0 | 1112 return JNIHandles::make_local(env, loader); |
1113 JVM_END | |
1114 | |
1115 | |
1116 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1117 JVMWrapper("JVM_IsInterface"); | |
1118 oop mirror = JNIHandles::resolve_non_null(cls); | |
1119 if (java_lang_Class::is_primitive(mirror)) { | |
1120 return JNI_FALSE; | |
1121 } | |
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1122 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1123 jboolean result = k->is_interface(); |
1124 assert(!result || k->oop_is_instance(), | |
0 | 1125 "all interfaces are instance types"); |
1126 // The compiler intrinsic for isInterface tests the | |
1127 // Klass::_access_flags bits in the same way. | |
1128 return result; | |
1129 JVM_END | |
1130 | |
1131 | |
1132 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1133 JVMWrapper("JVM_GetClassSigners"); | |
1134 JvmtiVMObjectAllocEventCollector oam; | |
1135 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1136 // There are no signers for primitive types | |
1137 return NULL; | |
1138 } | |
1139 | |
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diff
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|
1140 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1141 |
1142 // If there are no signers set in the class, or if the class | |
1143 // is an array, return NULL. | |
1144 if (signers == NULL) return NULL; | |
1145 | |
1146 // copy of the signers array | |
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6725
diff
changeset
|
1147 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1148 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1149 for (int index = 0; index < signers->length(); index++) { | |
1150 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1151 } | |
1152 | |
1153 // return the copy | |
1154 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1155 JVM_END | |
1156 | |
1157 | |
1158 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1159 JVMWrapper("JVM_SetClassSigners"); | |
1160 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1161 // This call is ignored for primitive types and arrays. | |
1162 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1163 // be called with an array. Only the bootstrap loader creates arrays. | |
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|
1164 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1165 if (k->oop_is_instance()) { |
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|
1166 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1167 } |
1168 } | |
1169 JVM_END | |
1170 | |
1171 | |
1172 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1173 JVMWrapper("JVM_GetProtectionDomain"); | |
1174 if (JNIHandles::resolve(cls) == NULL) { | |
1175 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1176 } | |
1177 | |
1178 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1179 // Primitive types does not have a protection domain. | |
1180 return NULL; | |
1181 } | |
1182 | |
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1183 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1184 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1185 JVM_END |
1186 | |
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Gilles Duboscq <duboscq@ssw.jku.at>
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changeset
|
1187 |
11010 | 1188 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1189 // If there is a security manager and protection domain, check the access | |
1190 // in the protection domain, otherwise it is authorized. | |
1191 if (java_lang_System::has_security_manager()) { | |
1192 | |
1193 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1194 // this context to revert to older behavior. | |
1195 // In this case the isAuthorized field in AccessControlContext is also not | |
1196 // present. | |
1197 if (Universe::protection_domain_implies_method() == NULL) { | |
1198 return true; | |
1199 } | |
1200 | |
1201 // Whitelist certain access control contexts | |
1202 if (java_security_AccessControlContext::is_authorized(context)) { | |
1203 return true; | |
1204 } | |
1205 | |
1206 oop prot = klass->protection_domain(); | |
1207 if (prot != NULL) { | |
1208 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1209 // in the new wrapper. | |
1210 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1211 Handle h_prot(THREAD, prot); | |
1212 JavaValue result(T_BOOLEAN); | |
1213 JavaCallArguments args(h_prot); | |
1214 JavaCalls::call(&result, m, &args, CHECK_false); | |
1215 return (result.get_jboolean() != 0); | |
1216 } | |
1217 } | |
1218 return true; | |
1219 } | |
1220 | |
1221 // Create an AccessControlContext with a protection domain with null codesource | |
1222 // and null permissions - which gives no permissions. | |
1223 oop create_dummy_access_control_context(TRAPS) { | |
1224 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1225 // new ProtectionDomain(null,null); | |
1226 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1227 Handle null_pd(THREAD, null_protection_domain); | |
1228 | |
1229 // new ProtectionDomain[] {pd}; | |
1230 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1231 context->obj_at_put(0, null_pd()); | |
1232 | |
1233 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1234 objArrayHandle h_context(THREAD, context); | |
1235 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1236 return result; | |
1237 } | |
0 | 1238 |
1239 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1240 JVMWrapper("JVM_DoPrivileged"); | |
1241 | |
1242 if (action == NULL) { | |
1243 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1244 } | |
1245 | |
11010 | 1246 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1247 vframeStream vfst(thread); | |
1248 vfst.security_get_caller_frame(1); | |
1249 | |
1250 if (vfst.at_end()) { | |
1251 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1252 } | |
1253 | |
1254 Method* method = vfst.method(); | |
1255 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1256 | |
1257 // Check that action object understands "Object run()" | |
1258 Handle h_context; | |
1259 if (context != NULL) { | |
1260 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1261 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1262 if (!authorized) { | |
1263 // Create an unprivileged access control object and call it's run function | |
1264 // instead. | |
1265 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1266 h_context = Handle(THREAD, noprivs); | |
1267 } | |
1268 } | |
0 | 1269 |
1270 // Check that action object understands "Object run()" | |
1271 Handle object (THREAD, JNIHandles::resolve(action)); | |
1272 | |
1273 // get run() method | |
6983 | 1274 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1275 vmSymbols::run_method_name(), |
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diff
changeset
|
1276 vmSymbols::void_object_signature(), |
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diff
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|
1277 Klass::normal); |
0 | 1278 methodHandle m (THREAD, m_oop); |
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1279 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1280 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1281 } | |
1282 | |
11010 | 1283 // Stack allocated list of privileged stack elements |
1284 PrivilegedElement pi; | |
0 | 1285 if (!vfst.at_end()) { |
11010 | 1286 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1287 thread->set_privileged_stack_top(&pi); |
1288 } | |
1289 | |
1290 | |
1291 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1292 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1293 Handle pending_exception; | |
1294 JavaValue result(T_OBJECT); | |
1295 JavaCallArguments args(object); | |
1296 JavaCalls::call(&result, m, &args, THREAD); | |
1297 | |
1298 // done with action, remove ourselves from the list | |
1299 if (!vfst.at_end()) { | |
1300 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1301 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1302 } | |
1303 | |
1304 if (HAS_PENDING_EXCEPTION) { | |
1305 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1306 CLEAR_PENDING_EXCEPTION; | |
1307 | |
1142 | 1308 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1309 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1310 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1311 JavaCallArguments args(pending_exception); | |
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1312 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1313 vmSymbols::exception_void_signature(), |
0 | 1314 &args); |
1315 } | |
1316 } | |
1317 | |
1318 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1319 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1320 JVM_END | |
1321 | |
1322 | |
1323 // Returns the inherited_access_control_context field of the running thread. | |
1324 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1325 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1326 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1327 return JNIHandles::make_local(env, result); | |
1328 JVM_END | |
1329 | |
1330 class RegisterArrayForGC { | |
1331 private: | |
1332 JavaThread *_thread; | |
1333 public: | |
1334 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1335 _thread = thread; | |
1336 _thread->register_array_for_gc(array); | |
1337 } | |
1338 | |
1339 ~RegisterArrayForGC() { | |
1340 _thread->register_array_for_gc(NULL); | |
1341 } | |
1342 }; | |
1343 | |
1344 | |
1345 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1346 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1347 if (!UsePrivilegedStack) return NULL; | |
1348 | |
1349 ResourceMark rm(THREAD); | |
1350 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1351 JvmtiVMObjectAllocEventCollector oam; | |
1352 | |
1353 // count the protection domains on the execution stack. We collapse | |
1354 // duplicate consecutive protection domains into a single one, as | |
1355 // well as stopping when we hit a privileged frame. | |
1356 | |
1357 // Use vframeStream to iterate through Java frames | |
1358 vframeStream vfst(thread); | |
1359 | |
1360 oop previous_protection_domain = NULL; | |
1361 Handle privileged_context(thread, NULL); | |
1362 bool is_privileged = false; | |
1363 oop protection_domain = NULL; | |
1364 | |
1365 for(; !vfst.at_end(); vfst.next()) { | |
1366 // get method of frame | |
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1367 Method* method = vfst.method(); |
0 | 1368 intptr_t* frame_id = vfst.frame_id(); |
1369 | |
1370 // check the privileged frames to see if we have a match | |
1371 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1372 // this frame is privileged | |
1373 is_privileged = true; | |
1374 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1375 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1376 } else { | |
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1377 protection_domain = method->method_holder()->protection_domain(); |
0 | 1378 } |
1379 | |
1380 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1381 local_array->push(protection_domain); | |
1382 previous_protection_domain = protection_domain; | |
1383 } | |
1384 | |
1385 if (is_privileged) break; | |
1386 } | |
1387 | |
1388 | |
1389 // either all the domains on the stack were system domains, or | |
1390 // we had a privileged system domain | |
1391 if (local_array->is_empty()) { | |
1392 if (is_privileged && privileged_context.is_null()) return NULL; | |
1393 | |
1394 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1395 return JNIHandles::make_local(env, result); | |
1396 } | |
1397 | |
1398 // the resource area must be registered in case of a gc | |
1399 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1400 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1401 local_array->length(), CHECK_NULL); |
1402 objArrayHandle h_context(thread, context); | |
1403 for (int index = 0; index < local_array->length(); index++) { | |
1404 h_context->obj_at_put(index, local_array->at(index)); | |
1405 } | |
1406 | |
1407 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1408 | |
1409 return JNIHandles::make_local(env, result); | |
1410 JVM_END | |
1411 | |
1412 | |
1413 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1414 JVMWrapper("JVM_IsArrayClass"); | |
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1415 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1416 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1417 JVM_END |
1418 | |
1419 | |
1420 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1421 JVMWrapper("JVM_IsPrimitiveClass"); | |
1422 oop mirror = JNIHandles::resolve_non_null(cls); | |
1423 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1424 JVM_END | |
1425 | |
1426 | |
1427 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1428 JVMWrapper("JVM_GetComponentType"); | |
1429 oop mirror = JNIHandles::resolve_non_null(cls); | |
1430 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1431 return (jclass) JNIHandles::make_local(env, result); | |
1432 JVM_END | |
1433 | |
1434 | |
1435 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1436 JVMWrapper("JVM_GetClassModifiers"); | |
1437 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1438 // Primitive type | |
1439 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1440 } | |
1441 | |
6983 | 1442 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1443 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1444 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1445 return k->modifier_flags(); | |
1446 JVM_END | |
1447 | |
1448 | |
1449 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1450 | |
1451 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1452 JvmtiVMObjectAllocEventCollector oam; | |
1453 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1454 // of an InstanceKlass |
0 | 1455 |
1456 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1457 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1458 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1459 return (jobjectArray)JNIHandles::make_local(env, result); |
1460 } | |
1461 | |
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1462 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1463 InnerClassesIterator iter(k); |
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1464 |
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1465 if (iter.length() == 0) { |
0 | 1466 // Neither an inner nor outer class |
1142 | 1467 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1468 return (jobjectArray)JNIHandles::make_local(env, result); |
1469 } | |
1470 | |
1471 // find inner class info | |
1472 constantPoolHandle cp(thread, k->constants()); | |
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1473 int length = iter.length(); |
0 | 1474 |
1475 // Allocate temp. result array | |
1142 | 1476 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1477 objArrayHandle result (THREAD, r); |
1478 int members = 0; | |
1479 | |
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1480 for (; !iter.done(); iter.next()) { |
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1481 int ioff = iter.inner_class_info_index(); |
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1482 int ooff = iter.outer_class_info_index(); |
0 | 1483 |
1484 if (ioff != 0 && ooff != 0) { | |
1485 // Check to see if the name matches the class we're looking for | |
1486 // before attempting to find the class. | |
1487 if (cp->klass_name_at_matches(k, ooff)) { | |
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1488 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1489 if (outer_klass == k()) { |
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1490 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1491 instanceKlassHandle inner_klass (THREAD, ik); |
1492 | |
1493 // Throws an exception if outer klass has not declared k as | |
1494 // an inner klass | |
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1495 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1496 |
1497 result->obj_at_put(members, inner_klass->java_mirror()); | |
1498 members++; | |
1499 } | |
1500 } | |
1501 } | |
1502 } | |
1503 | |
1504 if (members != length) { | |
1505 // Return array of right length | |
1142 | 1506 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1507 for(int i = 0; i < members; i++) { |
1508 res->obj_at_put(i, result->obj_at(i)); | |
1509 } | |
1510 return (jobjectArray)JNIHandles::make_local(env, res); | |
1511 } | |
1512 | |
1513 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1514 JVM_END | |
1515 | |
1516 | |
1517 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1518 { |
0 | 1519 // ofClass is a reference to a java_lang_Class object. |
1520 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1521 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1522 return NULL; |
1523 } | |
1524 | |
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1525 bool inner_is_member = false; |
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1526 Klass* outer_klass |
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1527 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1528 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1529 if (outer_klass == NULL) return NULL; // already a top-level class |
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1530 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1531 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1532 } |
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1533 JVM_END |
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1534 |
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1535 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1536 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1537 bool* inner_is_member, |
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1538 TRAPS) { |
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1539 Thread* thread = THREAD; |
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1540 InnerClassesIterator iter(k); |
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1541 if (iter.length() == 0) { |
0 | 1542 // No inner class info => no declaring class |
1543 return NULL; | |
1544 } | |
1545 | |
1546 constantPoolHandle i_cp(thread, k->constants()); | |
1547 | |
1548 bool found = false; | |
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1549 Klass* ok; |
0 | 1550 instanceKlassHandle outer_klass; |
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1551 *inner_is_member = false; |
0 | 1552 |
1553 // Find inner_klass attribute | |
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1554 for (; !iter.done() && !found; iter.next()) { |
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1555 int ioff = iter.inner_class_info_index(); |
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1556 int ooff = iter.outer_class_info_index(); |
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1557 int noff = iter.inner_name_index(); |
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1558 if (ioff != 0) { |
0 | 1559 // Check to see if the name matches the class we're looking for |
1560 // before attempting to find the class. | |
1561 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1562 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1563 found = (k() == inner_klass); |
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1564 if (found && ooff != 0) { |
0 | 1565 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1566 outer_klass = instanceKlassHandle(thread, ok); | |
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1567 *inner_is_member = true; |
0 | 1568 } |
1569 } | |
1570 } | |
1571 } | |
1572 | |
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1573 if (found && outer_klass.is_null()) { |
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1574 // It may be anonymous; try for that. |
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1575 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1576 if (encl_method_class_idx != 0) { |
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1577 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1578 outer_klass = instanceKlassHandle(thread, ok); |
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1579 *inner_is_member = false; |
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1580 } |
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1581 } |
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1582 |
0 | 1583 // If no inner class attribute found for this class. |
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1584 if (outer_klass.is_null()) return NULL; |
0 | 1585 |
1586 // Throws an exception if outer klass has not declared k as an inner klass | |
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1587 // We need evidence that each klass knows about the other, or else |
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1588 // the system could allow a spoof of an inner class to gain access rights. |
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1589 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1590 return outer_klass(); |
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1591 } |
0 | 1592 |
1593 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1594 assert (cls != NULL, "illegal class"); | |
1595 JVMWrapper("JVM_GetClassSignature"); | |
1596 JvmtiVMObjectAllocEventCollector oam; | |
1597 ResourceMark rm(THREAD); | |
1598 // Return null for arrays and primatives | |
1599 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1600 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1601 if (k->oop_is_instance()) { |
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1602 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
2177
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diff
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|
1603 if (sym == NULL) return NULL; |
0 | 1604 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1605 return (jstring) JNIHandles::make_local(env, str()); | |
1606 } | |
1607 } | |
1608 return NULL; | |
1609 JVM_END | |
1610 | |
1611 | |
1612 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1613 assert (cls != NULL, "illegal class"); | |
1614 JVMWrapper("JVM_GetClassAnnotations"); | |
8818
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1615 |
0 | 1616 // Return null for arrays and primitives |
1617 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1618 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1619 if (k->oop_is_instance()) { |
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1620 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1621 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1622 } |
1623 } | |
1624 return NULL; | |
1625 JVM_END | |
1626 | |
1627 | |
8818
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1628 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1629 // some of this code was adapted from from jni_FromReflectedField |
1630 | |
1631 oop reflected = JNIHandles::resolve_non_null(field); | |
1632 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1633 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1634 int slot = java_lang_reflect_Field::slot(reflected); |
1635 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1636 | |
1637 KlassHandle kh(THREAD, k); | |
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1638 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1639 |
1640 if (modifiers & JVM_ACC_STATIC) { | |
1641 // for static fields we only look in the current class | |
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1642 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1643 assert(false, "cannot find static field"); |
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|
1644 return false; |
0 | 1645 } |
1646 } else { | |
1647 // for instance fields we start with the current class and work | |
1648 // our way up through the superclass chain | |
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1649 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1650 assert(false, "cannot find instance field"); |
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|
1651 return false; |
0 | 1652 } |
1653 } | |
8818
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|
1654 return true; |
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|
1655 } |
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|
1656 |
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|
1657 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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|
1658 // field is a handle to a java.lang.reflect.Field object |
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|
1659 assert(field != NULL, "illegal field"); |
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|
1660 JVMWrapper("JVM_GetFieldAnnotations"); |
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|
1661 |
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|
1662 fieldDescriptor fd; |
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|
1663 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1664 if (!gotFd) { |
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|
1665 return NULL; |
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|
1666 } |
0 | 1667 |
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|
1668 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1669 JVM_END |
1670 | |
1671 | |
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|
1672 static Method* jvm_get_method_common(jobject method) { |
0 | 1673 // some of this code was adapted from from jni_FromReflectedMethod |
1674 | |
1675 oop reflected = JNIHandles::resolve_non_null(method); | |
1676 oop mirror = NULL; | |
1677 int slot = 0; | |
1678 | |
1142 | 1679 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1680 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1681 slot = java_lang_reflect_Constructor::slot(reflected); | |
1682 } else { | |
1142 | 1683 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1684 "wrong type"); |
1685 mirror = java_lang_reflect_Method::clazz(reflected); | |
1686 slot = java_lang_reflect_Method::slot(reflected); | |
1687 } | |
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1688 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1689 |
7462
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|
1690 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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|
1691 assert(m != NULL, "cannot find method"); |
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|
1692 return m; // caller has to deal with NULL in product mode |
0 | 1693 } |
1694 | |
1695 | |
1696 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1697 JVMWrapper("JVM_GetMethodAnnotations"); | |
1698 | |
1699 // method is a handle to a java.lang.reflect.Method object | |
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|
1700 Method* m = jvm_get_method_common(method); |
8818
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|
1701 if (m == NULL) { |
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|
1702 return NULL; |
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|
1703 } |
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|
1704 |
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|
1705 return (jbyteArray) JNIHandles::make_local(env, |
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|
1706 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1707 JVM_END |
1708 | |
1709 | |
1710 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1711 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1712 | |
1713 // method is a handle to a java.lang.reflect.Method object | |
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|
1714 Method* m = jvm_get_method_common(method); |
8818
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|
1715 if (m == NULL) { |
1916ca1dec2f
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|
1716 return NULL; |
1916ca1dec2f
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|
1717 } |
1916ca1dec2f
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|
1718 |
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|
1719 return (jbyteArray) JNIHandles::make_local(env, |
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|
1720 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1721 JVM_END |
1722 | |
1723 | |
1724 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1725 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1726 | |
1727 // method is a handle to a java.lang.reflect.Method object | |
7462
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|
1728 Method* m = jvm_get_method_common(method); |
8818
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|
1729 if (m == NULL) { |
1916ca1dec2f
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|
1730 return NULL; |
1916ca1dec2f
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|
1731 } |
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|
1732 |
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|
1733 return (jbyteArray) JNIHandles::make_local(env, |
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|
1734 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1735 JVM_END |
1736 | |
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|
1737 /* Type use annotations support (JDK 1.8) */ |
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|
1738 |
35431a769282
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|
1739 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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|
1740 assert (cls != NULL, "illegal class"); |
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|
1741 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1742 ResourceMark rm(THREAD); |
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|
1743 // Return null for arrays and primitives |
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|
1744 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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|
1745 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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|
1746 if (k->oop_is_instance()) { |
8031 | 1747 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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|
1748 if (type_annotations != NULL) { |
8031 | 1749 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
7611
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|
1750 return (jbyteArray) JNIHandles::make_local(env, a); |
ff0a7943fd29
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|
1751 } |
7457
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|
1752 } |
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|
1753 } |
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|
1754 return NULL; |
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|
1755 JVM_END |
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|
1756 |
8818
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|
1757 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
1916ca1dec2f
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changeset
|
1758 assert (method != NULL, "illegal method"); |
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changeset
|
1759 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1760 |
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|
1761 // method is a handle to a java.lang.reflect.Method object |
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changeset
|
1762 Method* m = jvm_get_method_common(method); |
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changeset
|
1763 if (m == NULL) { |
1916ca1dec2f
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changeset
|
1764 return NULL; |
1916ca1dec2f
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|
1765 } |
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|
1766 |
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|
1767 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1768 if (type_annotations != NULL) { |
1916ca1dec2f
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|
1769 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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|
1770 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1771 } |
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|
1772 |
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|
1773 return NULL; |
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|
1774 JVM_END |
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|
1775 |
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|
1776 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
1916ca1dec2f
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changeset
|
1777 assert (field != NULL, "illegal field"); |
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diff
changeset
|
1778 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1779 |
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|
1780 fieldDescriptor fd; |
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1781 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1782 if (!gotFd) { |
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1783 return NULL; |
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1784 } |
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1785 |
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1786 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1787 JVM_END |
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1788 |
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1789 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1790 if (!cp->is_within_bounds(index)) { |
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1791 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1792 } |
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1793 } |
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1794 |
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1795 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1796 { |
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1797 JVMWrapper("JVM_GetMethodParameters"); |
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1798 // method is a handle to a java.lang.reflect.Method object |
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1799 Method* method_ptr = jvm_get_method_common(method); |
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1800 methodHandle mh (THREAD, method_ptr); |
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1801 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1802 const int num_params = mh->method_parameters_length(); |
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1803 |
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1804 if (0 != num_params) { |
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1805 // make sure all the symbols are properly formatted |
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1806 for (int i = 0; i < num_params; i++) { |
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1807 MethodParametersElement* params = mh->method_parameters_start(); |
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1808 int index = params[i].name_cp_index; |
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1809 bounds_check(mh->constants(), index, CHECK_NULL); |
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1810 |
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1811 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1812 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1813 "Wrong type at constant pool index"); |
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1814 } |
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1815 |
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1816 } |
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1817 |
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1818 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1819 objArrayHandle result (THREAD, result_oop); |
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1820 |
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1821 for (int i = 0; i < num_params; i++) { |
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1822 MethodParametersElement* params = mh->method_parameters_start(); |
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1823 // For a 0 index, give a NULL symbol |
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1824 Symbol* sym = 0 != params[i].name_cp_index ? |
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1825 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1826 int flags = params[i].flags; |
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1827 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1828 flags, CHECK_NULL); |
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1829 result->obj_at_put(i, param); |
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1830 } |
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1831 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1832 } else { |
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1833 return (jobjectArray)NULL; |
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1834 } |
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1835 } |
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1836 JVM_END |
0 | 1837 |
1838 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1839 | |
1840 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1841 { | |
1842 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1843 JvmtiVMObjectAllocEventCollector oam; | |
1844 | |
1845 // Exclude primitive types and array types | |
1846 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1847 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1848 // Return empty array |
1142 | 1849 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1850 return (jobjectArray) JNIHandles::make_local(env, res); |
1851 } | |
1852 | |
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1853 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1854 constantPoolHandle cp(THREAD, k->constants()); |
1855 | |
1856 // Ensure class is linked | |
1857 k->link_class(CHECK_NULL); | |
1858 | |
1859 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1860 bool skip_backtrace = false; | |
1861 | |
1862 // Allocate result | |
1863 int num_fields; | |
1864 | |
1865 if (publicOnly) { | |
1866 num_fields = 0; | |
3938 | 1867 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1868 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1869 } |
1870 } else { | |
3938 | 1871 num_fields = k->java_fields_count(); |
0 | 1872 |
1142 | 1873 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1874 num_fields--; |
1875 skip_backtrace = true; | |
1876 } | |
1877 } | |
1878 | |
1142 | 1879 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1880 objArrayHandle result (THREAD, r); |
1881 | |
1882 int out_idx = 0; | |
1883 fieldDescriptor fd; | |
3938 | 1884 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1885 if (skip_backtrace) { |
1886 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1887 int offset = fs.offset(); |
0 | 1888 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1889 } | |
1890 | |
3938 | 1891 if (!publicOnly || fs.access_flags().is_public()) { |
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1892 fd.reinitialize(k(), fs.index()); |
0 | 1893 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1894 result->obj_at_put(out_idx, field); | |
1895 ++out_idx; | |
1896 } | |
1897 } | |
1898 assert(out_idx == num_fields, "just checking"); | |
1899 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1900 } | |
1901 JVM_END | |
1902 | |
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1903 static bool select_method(methodHandle method, bool want_constructor) { |
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1904 if (want_constructor) { |
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1905 return (method->is_initializer() && !method->is_static()); |
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1906 } else { |
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1907 return (!method->is_initializer() && !method->is_overpass()); |
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1908 } |
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1909 } |
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1910 |
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1911 static jobjectArray get_class_declared_methods_helper( |
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1912 JNIEnv *env, |
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1913 jclass ofClass, jboolean publicOnly, |
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1914 bool want_constructor, |
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1915 Klass* klass, TRAPS) { |
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1916 |
0 | 1917 JvmtiVMObjectAllocEventCollector oam; |
1918 | |
1919 // Exclude primitive types and array types | |
1920 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1921 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1922 // Return empty array |
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1923 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1924 return (jobjectArray) JNIHandles::make_local(env, res); |
1925 } | |
1926 | |
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1927 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1928 |
1929 // Ensure class is linked | |
1930 k->link_class(CHECK_NULL); | |
1931 | |
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1932 Array<Method*>* methods = k->methods(); |
0 | 1933 int methods_length = methods->length(); |
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1934 |
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1935 // Save original method_idnum in case of redefinition, which can change |
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1936 // the idnum of obsolete methods. The new method will have the same idnum |
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1937 // but if we refresh the methods array, the counts will be wrong. |
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1938 ResourceMark rm(THREAD); |
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1939 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1940 int num_methods = 0; |
1941 | |
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1942 for (int i = 0; i < methods_length; i++) { |
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1943 methodHandle method(THREAD, methods->at(i)); |
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1944 if (select_method(method, want_constructor)) { |
0 | 1945 if (!publicOnly || method->is_public()) { |
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1946 idnums->push(method->method_idnum()); |
0 | 1947 ++num_methods; |
1948 } | |
1949 } | |
1950 } | |
1951 | |
1952 // Allocate result | |
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1953 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1954 objArrayHandle result (THREAD, r); |
1955 | |
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1956 // Now just put the methods that we selected above, but go by their idnum |
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1957 // in case of redefinition. The methods can be redefined at any safepoint, |
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1958 // so above when allocating the oop array and below when creating reflect |
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1959 // objects. |
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1960 for (int i = 0; i < num_methods; i++) { |
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1961 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1962 if (method.is_null()) { |
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1963 // Method may have been deleted and seems this API can handle null |
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1964 // Otherwise should probably put a method that throws NSME |
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1965 result->obj_at_put(i, NULL); |
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1966 } else { |
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1967 oop m; |
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1968 if (want_constructor) { |
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1969 m = Reflection::new_constructor(method, CHECK_NULL); |
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1970 } else { |
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1971 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1972 } |
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1973 result->obj_at_put(i, m); |
0 | 1974 } |
1975 } | |
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1976 |
0 | 1977 return (jobjectArray) JNIHandles::make_local(env, result()); |
1978 } | |
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1979 |
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1980 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1981 { |
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1982 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1983 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1984 /*want_constructor*/ false, |
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1985 SystemDictionary::reflect_Method_klass(), THREAD); |
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1986 } |
0 | 1987 JVM_END |
1988 | |
1989 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1990 { | |
1991 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1992 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1993 /*want_constructor*/ true, |
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1994 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1995 } |
1996 JVM_END | |
1997 | |
1998 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1999 { | |
2000 JVMWrapper("JVM_GetClassAccessFlags"); | |
2001 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
2002 // Primitive type | |
2003 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
2004 } | |
2005 | |
6983 | 2006 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2007 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
2008 } | |
2009 JVM_END | |
2010 | |
2011 | |
2012 // Constant pool access ////////////////////////////////////////////////////////// | |
2013 | |
2014 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
2015 { | |
2016 JVMWrapper("JVM_GetClassConstantPool"); | |
2017 JvmtiVMObjectAllocEventCollector oam; | |
2018 | |
2019 // Return null for primitives and arrays | |
2020 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2021 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 2022 if (k->oop_is_instance()) { |
0 | 2023 instanceKlassHandle k_h(THREAD, k); |
2024 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2025 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 2026 return JNIHandles::make_local(jcp()); |
2027 } | |
2028 } | |
2029 return NULL; | |
2030 } | |
2031 JVM_END | |
2032 | |
2033 | |
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2034 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 2035 { |
2036 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2037 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2038 return cp->length(); |
2039 } | |
2040 JVM_END | |
2041 | |
2042 | |
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2043 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2044 { |
2045 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2046 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2047 bounds_check(cp, index, CHECK_NULL); |
2048 constantTag tag = cp->tag_at(index); | |
2049 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2050 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2051 } | |
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2052 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2053 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2054 } |
2055 JVM_END | |
2056 | |
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2057 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2058 { |
2059 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2060 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2061 bounds_check(cp, index, CHECK_NULL); |
2062 constantTag tag = cp->tag_at(index); | |
2063 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2064 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2065 } | |
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2066 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2067 if (k == NULL) return NULL; |
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2068 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2069 } |
2070 JVM_END | |
2071 | |
2072 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2073 constantTag tag = cp->tag_at(index); | |
2074 if (!tag.is_method() && !tag.is_interface_method()) { | |
2075 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2076 } | |
2077 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2078 Klass* k_o; |
0 | 2079 if (force_resolution) { |
2080 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2081 } else { | |
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2082 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2083 if (k_o == NULL) return NULL; |
2084 } | |
2085 instanceKlassHandle k(THREAD, k_o); | |
2177
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2086 Symbol* name = cp->uncached_name_ref_at(index); |
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2087 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2088 methodHandle m (THREAD, k->find_method(name, sig)); |
2089 if (m.is_null()) { | |
2090 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2091 } | |
2092 oop method; | |
2093 if (!m->is_initializer() || m->is_static()) { | |
2094 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2095 } else { | |
2096 method = Reflection::new_constructor(m, CHECK_NULL); | |
2097 } | |
2098 return JNIHandles::make_local(method); | |
2099 } | |
2100 | |
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2101 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2102 { |
2103 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2104 JvmtiVMObjectAllocEventCollector oam; | |
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2105 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2106 bounds_check(cp, index, CHECK_NULL); |
2107 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2108 return res; | |
2109 } | |
2110 JVM_END | |
2111 | |
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2112 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2113 { |
2114 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2115 JvmtiVMObjectAllocEventCollector oam; | |
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2116 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2117 bounds_check(cp, index, CHECK_NULL); |
2118 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2119 return res; | |
2120 } | |
2121 JVM_END | |
2122 | |
2123 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2124 constantTag tag = cp->tag_at(index); | |
2125 if (!tag.is_field()) { | |
2126 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2127 } | |
2128 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2129 Klass* k_o; |
0 | 2130 if (force_resolution) { |
2131 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2132 } else { | |
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2133 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2134 if (k_o == NULL) return NULL; |
2135 } | |
2136 instanceKlassHandle k(THREAD, k_o); | |
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2137 Symbol* name = cp->uncached_name_ref_at(index); |
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2138 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2139 fieldDescriptor fd; |
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2140 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2141 if (target_klass == NULL) { |
2142 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2143 } | |
2144 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2145 return JNIHandles::make_local(field); | |
2146 } | |
2147 | |
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2148 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2149 { |
2150 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2151 JvmtiVMObjectAllocEventCollector oam; | |
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2152 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2153 bounds_check(cp, index, CHECK_NULL); |
2154 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2155 return res; | |
2156 } | |
2157 JVM_END | |
2158 | |
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2159 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2160 { |
2161 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2162 JvmtiVMObjectAllocEventCollector oam; | |
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2163 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2164 bounds_check(cp, index, CHECK_NULL); |
2165 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2166 return res; | |
2167 } | |
2168 JVM_END | |
2169 | |
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2170 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2171 { |
2172 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2173 JvmtiVMObjectAllocEventCollector oam; | |
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2174 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2175 bounds_check(cp, index, CHECK_NULL); |
2176 constantTag tag = cp->tag_at(index); | |
2177 if (!tag.is_field_or_method()) { | |
2178 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2179 } | |
2180 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
2177
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2181 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2182 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2183 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2184 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2185 objArrayHandle dest(THREAD, dest_o); |
2186 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2187 dest->obj_at_put(0, str()); | |
2188 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2189 dest->obj_at_put(1, str()); | |
2190 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2191 dest->obj_at_put(2, str()); | |
2192 return (jobjectArray) JNIHandles::make_local(dest()); | |
2193 } | |
2194 JVM_END | |
2195 | |
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2196 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2197 { |
2198 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2199 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2200 bounds_check(cp, index, CHECK_0); |
2201 constantTag tag = cp->tag_at(index); | |
2202 if (!tag.is_int()) { | |
2203 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2204 } | |
2205 return cp->int_at(index); | |
2206 } | |
2207 JVM_END | |
2208 | |
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2209 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2210 { |
2211 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2212 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2213 bounds_check(cp, index, CHECK_(0L)); |
2214 constantTag tag = cp->tag_at(index); | |
2215 if (!tag.is_long()) { | |
2216 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2217 } | |
2218 return cp->long_at(index); | |
2219 } | |
2220 JVM_END | |
2221 | |
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2222 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2223 { |
2224 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2225 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2226 bounds_check(cp, index, CHECK_(0.0f)); |
2227 constantTag tag = cp->tag_at(index); | |
2228 if (!tag.is_float()) { | |
2229 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2230 } | |
2231 return cp->float_at(index); | |
2232 } | |
2233 JVM_END | |
2234 | |
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2235 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2236 { |
2237 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2238 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2239 bounds_check(cp, index, CHECK_(0.0)); |
2240 constantTag tag = cp->tag_at(index); | |
2241 if (!tag.is_double()) { | |
2242 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2243 } | |
2244 return cp->double_at(index); | |
2245 } | |
2246 JVM_END | |
2247 | |
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2248 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2249 { |
2250 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2251 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2252 bounds_check(cp, index, CHECK_NULL); |
2253 constantTag tag = cp->tag_at(index); | |
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2254 if (!tag.is_string()) { |
0 | 2255 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2256 } | |
2257 oop str = cp->string_at(index, CHECK_NULL); | |
2258 return (jstring) JNIHandles::make_local(str); | |
2259 } | |
2260 JVM_END | |
2261 | |
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2262 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2263 { |
2264 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2265 JvmtiVMObjectAllocEventCollector oam; | |
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2266 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2267 bounds_check(cp, index, CHECK_NULL); |
2268 constantTag tag = cp->tag_at(index); | |
2269 if (!tag.is_symbol()) { | |
2270 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2271 } | |
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2272 Symbol* sym = cp->symbol_at(index); |
0 | 2273 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2274 return (jstring) JNIHandles::make_local(str()); | |
2275 } | |
2276 JVM_END | |
2277 | |
2278 | |
2279 // Assertion support. ////////////////////////////////////////////////////////// | |
2280 | |
2281 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2282 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2283 assert(cls != NULL, "bad class"); | |
2284 | |
2285 oop r = JNIHandles::resolve(cls); | |
2286 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2287 if (java_lang_Class::is_primitive(r)) return false; | |
2288 | |
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2289 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2290 assert(k->oop_is_instance(), "must be an instance klass"); |
2291 if (! k->oop_is_instance()) return false; | |
0 | 2292 |
2293 ResourceMark rm(THREAD); | |
6983 | 2294 const char* name = k->name()->as_C_string(); |
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2295 bool system_class = k->class_loader() == NULL GRAAL_ONLY(|| SystemDictionary::graal_loader() == k->class_loader()); |
0 | 2296 return JavaAssertions::enabled(name, system_class); |
2297 | |
2298 JVM_END | |
2299 | |
2300 | |
2301 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2302 // command-line assertion arguments (i.e., -ea, -da). | |
2303 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2304 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2305 JvmtiVMObjectAllocEventCollector oam; | |
2306 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2307 return JNIHandles::make_local(env, asd); | |
2308 JVM_END | |
2309 | |
2310 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2311 | |
2312 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2313 | |
2314 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2315 // All functions from this section should call the jvmtiThreadSate function: | |
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2316 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2317 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2318 // was invoked in the middle of the class redefinition. |
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2319 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2320 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2321 | |
2322 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2323 JVMWrapper("JVM_GetClassNameUTF"); | |
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2324 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2325 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2326 return k->name()->as_utf8(); |
0 | 2327 JVM_END |
2328 | |
2329 | |
2330 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2331 JVMWrapper("JVM_GetClassCPTypes"); | |
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2332 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2333 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2334 // types will have length zero if this is not an InstanceKlass |
0 | 2335 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2336 if (k->oop_is_instance()) { |
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2337 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2338 for (int index = cp->length() - 1; index >= 0; index--) { |
2339 constantTag tag = cp->tag_at(index); | |
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2340 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2341 } |
2342 } | |
2343 JVM_END | |
2344 | |
2345 | |
2346 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2347 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2348 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2349 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2350 if (!k->oop_is_instance()) |
0 | 2351 return 0; |
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2352 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2353 JVM_END |
2354 | |
2355 | |
2356 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2357 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2358 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2359 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2360 if (!k->oop_is_instance()) |
0 | 2361 return 0; |
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2362 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2363 JVM_END |
2364 | |
2365 | |
2366 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2367 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2368 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2369 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2370 if (!k->oop_is_instance()) |
0 | 2371 return 0; |
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2372 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2373 JVM_END |
2374 | |
2375 | |
2376 // The following methods, used for the verifier, are never called with | |
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2377 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2378 // Typically, these methods are called in a loop with bounds determined |
2379 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2380 // zero for arrays. | |
2381 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2382 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2383 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2384 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2385 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2386 int length = method->checked_exceptions_length(); |
0 | 2387 if (length > 0) { |
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2388 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2389 for (int i = 0; i < length; i++) { |
2390 exceptions[i] = table[i].class_cp_index; | |
2391 } | |
2392 } | |
2393 JVM_END | |
2394 | |
2395 | |
2396 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2397 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2398 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2399 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2400 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2401 return method->checked_exceptions_length(); |
0 | 2402 JVM_END |
2403 | |
2404 | |
2405 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2406 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2407 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2408 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2409 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2410 memcpy(code, method->code_base(), method->code_size()); |
0 | 2411 JVM_END |
2412 | |
2413 | |
2414 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2415 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2416 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2417 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2418 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2419 return method->code_size(); |
0 | 2420 JVM_END |
2421 | |
2422 | |
2423 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2424 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2425 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2426 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2427 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2428 ExceptionTable extable(method); |
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2429 entry->start_pc = extable.start_pc(entry_index); |
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2430 entry->end_pc = extable.end_pc(entry_index); |
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2431 entry->handler_pc = extable.handler_pc(entry_index); |
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2432 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2433 JVM_END |
2434 | |
2435 | |
2436 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2437 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2438 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2439 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2440 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2441 return method->exception_table_length(); |
0 | 2442 JVM_END |
2443 | |
2444 | |
2445 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2446 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2447 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2448 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2449 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2450 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2451 JVM_END |
2452 | |
2453 | |
2454 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2455 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2456 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2457 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2458 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2459 JVM_END |
2460 | |
2461 | |
2462 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2463 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2464 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2465 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2466 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2467 return method->max_locals(); |
0 | 2468 JVM_END |
2469 | |
2470 | |
2471 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2472 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2473 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2474 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2475 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2476 return method->size_of_parameters(); |
0 | 2477 JVM_END |
2478 | |
2479 | |
2480 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2481 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2482 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2483 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2484 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2485 return method->verifier_max_stack(); |
0 | 2486 JVM_END |
2487 | |
2488 | |
2489 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2490 JVMWrapper("JVM_IsConstructorIx"); | |
2491 ResourceMark rm(THREAD); | |
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2492 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2493 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2494 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2495 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2496 JVM_END |
2497 | |
2498 | |
7958
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|
2499 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2500 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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|
2501 ResourceMark rm(THREAD); |
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changeset
|
2502 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2503 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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changeset
|
2504 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2505 return method->is_overpass(); |
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|
2506 JVM_END |
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2507 |
0 | 2508 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2509 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2510 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2511 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2512 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2513 return method->name()->as_utf8(); |
0 | 2514 JVM_END |
2515 | |
2516 | |
2517 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2518 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2519 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2520 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2521 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2522 return method->signature()->as_utf8(); |
0 | 2523 JVM_END |
2524 | |
2525 /** | |
2526 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2527 * read entries in the constant pool. Since the old verifier always | |
2528 * works on a copy of the code, it will not see any rewriting that | |
2529 * may possibly occur in the middle of verification. So it is important | |
2530 * that nothing it calls tries to use the cpCache instead of the raw | |
2531 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2532 */ | |
2533 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2534 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2535 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2536 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2537 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2538 switch (cp->tag_at(cp_index).value()) { |
2539 case JVM_CONSTANT_Fieldref: | |
2540 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2541 default: | |
2542 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2543 } | |
2544 ShouldNotReachHere(); | |
2545 return NULL; | |
2546 JVM_END | |
2547 | |
2548 | |
2549 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2550 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2551 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2552 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2553 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2554 switch (cp->tag_at(cp_index).value()) { |
2555 case JVM_CONSTANT_InterfaceMethodref: | |
2556 case JVM_CONSTANT_Methodref: | |
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2557 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2558 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2559 default: | |
2560 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2561 } | |
2562 ShouldNotReachHere(); | |
2563 return NULL; | |
2564 JVM_END | |
2565 | |
2566 | |
2567 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2568 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2569 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2570 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2571 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2572 switch (cp->tag_at(cp_index).value()) { |
2573 case JVM_CONSTANT_InterfaceMethodref: | |
2574 case JVM_CONSTANT_Methodref: | |
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2575 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2576 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2577 default: | |
2578 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2579 } | |
2580 ShouldNotReachHere(); | |
2581 return NULL; | |
2582 JVM_END | |
2583 | |
2584 | |
2585 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2586 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2587 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2588 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2589 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2590 switch (cp->tag_at(cp_index).value()) { |
2591 case JVM_CONSTANT_Fieldref: | |
2592 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2593 default: | |
2594 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2595 } | |
2596 ShouldNotReachHere(); | |
2597 return NULL; | |
2598 JVM_END | |
2599 | |
2600 | |
2601 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2602 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2603 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2604 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2605 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2606 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2607 return classname->as_utf8(); |
2608 JVM_END | |
2609 | |
2610 | |
2611 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2612 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2613 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2614 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2615 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2616 switch (cp->tag_at(cp_index).value()) { |
2617 case JVM_CONSTANT_Fieldref: { | |
2618 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2619 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2620 return classname->as_utf8(); |
2621 } | |
2622 default: | |
2623 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2624 } | |
2625 ShouldNotReachHere(); | |
2626 return NULL; | |
2627 JVM_END | |
2628 | |
2629 | |
2630 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2631 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2632 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2633 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2634 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2635 switch (cp->tag_at(cp_index).value()) { |
2636 case JVM_CONSTANT_Methodref: | |
2637 case JVM_CONSTANT_InterfaceMethodref: { | |
2638 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2639 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2640 return classname->as_utf8(); |
2641 } | |
2642 default: | |
2643 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2644 } | |
2645 ShouldNotReachHere(); | |
2646 return NULL; | |
2647 JVM_END | |
2648 | |
2649 | |
3938 | 2650 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2651 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2652 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2653 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2654 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2655 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2656 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2657 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2658 switch (cp->tag_at(cp_index).value()) { |
2659 case JVM_CONSTANT_Fieldref: { | |
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2660 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2661 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2662 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2663 if (fs.name() == name && fs.signature() == signature) { | |
2664 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2665 } |
2666 } | |
2667 return -1; | |
2668 } | |
2669 default: | |
2670 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2671 } | |
2672 ShouldNotReachHere(); | |
2673 return 0; | |
2674 JVM_END | |
2675 | |
2676 | |
2677 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2678 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2679 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2680 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2681 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2682 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2683 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2684 switch (cp->tag_at(cp_index).value()) { |
2685 case JVM_CONSTANT_Methodref: | |
2686 case JVM_CONSTANT_InterfaceMethodref: { | |
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2687 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2688 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2689 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2690 int methods_count = methods->length(); |
2691 for (int i = 0; i < methods_count; i++) { | |
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2692 Method* method = methods->at(i); |
0 | 2693 if (method->name() == name && method->signature() == signature) { |
2694 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2695 } | |
2696 } | |
2697 return -1; | |
2698 } | |
2699 default: | |
2700 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2701 } | |
2702 ShouldNotReachHere(); | |
2703 return 0; | |
2704 JVM_END | |
2705 | |
2706 | |
2707 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2708 | |
2709 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2710 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2711 JVM_END | |
2712 | |
2713 | |
2714 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2715 JVMWrapper("JVM_IsSameClassPackage"); | |
2716 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2717 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2718 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2719 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2720 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2721 JVM_END | |
2722 | |
2723 | |
2724 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2725 | |
2726 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2727 JVMWrapper2("JVM_Open (%s)", fname); | |
2728 | |
2729 //%note jvm_r6 | |
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diff
changeset
|
2730 int result = os::open(fname, flags, mode); |
0 | 2731 if (result >= 0) { |
2732 return result; | |
2733 } else { | |
2734 switch(errno) { | |
2735 case EEXIST: | |
2736 return JVM_EEXIST; | |
2737 default: | |
2738 return -1; | |
2739 } | |
2740 } | |
2741 JVM_END | |
2742 | |
2743 | |
2744 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2745 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2746 //%note jvm_r6 | |
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diff
changeset
|
2747 return os::close(fd); |
0 | 2748 JVM_END |
2749 | |
2750 | |
2751 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2752 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2753 | |
2754 //%note jvm_r6 | |
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changeset
|
2755 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2756 JVM_END |
2757 | |
2758 | |
2759 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2760 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2761 | |
2762 //%note jvm_r6 | |
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changeset
|
2763 return (jint)os::write(fd, buf, nbytes); |
0 | 2764 JVM_END |
2765 | |
2766 | |
2767 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2768 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2769 //%note jvm_r6 | |
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changeset
|
2770 return os::available(fd, pbytes); |
0 | 2771 JVM_END |
2772 | |
2773 | |
2774 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
17937
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17889
diff
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|
2775 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
0 | 2776 //%note jvm_r6 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2777 return os::lseek(fd, offset, whence); |
0 | 2778 JVM_END |
2779 | |
2780 | |
2781 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
17937
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17889
diff
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|
2782 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2783 return os::ftruncate(fd, length); |
0 | 2784 JVM_END |
2785 | |
2786 | |
2787 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2788 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2789 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2790 return os::fsync(fd); |
0 | 2791 JVM_END |
2792 | |
2793 | |
2794 // Printing support ////////////////////////////////////////////////// | |
2795 extern "C" { | |
2796 | |
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diff
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|
2797 ATTRIBUTE_PRINTF(3, 0) |
0 | 2798 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
2799 // see bug 4399518, 4417214 | |
2800 if ((intptr_t)count <= 0) return -1; | |
2801 return vsnprintf(str, count, fmt, args); | |
2802 } | |
2803 | |
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diff
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|
2804 ATTRIBUTE_PRINTF(3, 0) |
0 | 2805 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
2806 va_list args; | |
2807 int len; | |
2808 va_start(args, fmt); | |
2809 len = jio_vsnprintf(str, count, fmt, args); | |
2810 va_end(args); | |
2811 return len; | |
2812 } | |
2813 | |
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diff
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|
2814 ATTRIBUTE_PRINTF(2,3) |
0 | 2815 int jio_fprintf(FILE* f, const char *fmt, ...) { |
2816 int len; | |
2817 va_list args; | |
2818 va_start(args, fmt); | |
2819 len = jio_vfprintf(f, fmt, args); | |
2820 va_end(args); | |
2821 return len; | |
2822 } | |
2823 | |
17937
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diff
changeset
|
2824 ATTRIBUTE_PRINTF(2, 0) |
0 | 2825 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
2826 if (Arguments::vfprintf_hook() != NULL) { | |
2827 return Arguments::vfprintf_hook()(f, fmt, args); | |
2828 } else { | |
2829 return vfprintf(f, fmt, args); | |
2830 } | |
2831 } | |
2832 | |
17937
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drchase
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diff
changeset
|
2833 ATTRIBUTE_PRINTF(1, 2) |
2191 | 2834 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2835 int len; |
2836 va_list args; | |
2837 va_start(args, fmt); | |
2838 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2839 va_end(args); | |
2840 return len; | |
2841 } | |
2842 | |
2843 | |
2844 // HotSpot specific jio method | |
2845 void jio_print(const char* s) { | |
2846 // Try to make this function as atomic as possible. | |
2847 if (Arguments::vfprintf_hook() != NULL) { | |
2848 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2849 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2850 // 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
|
2851 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2852 } |
2853 } | |
2854 | |
2855 } // Extern C | |
2856 | |
2857 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2858 | |
2859 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2860 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2861 // OSThread objects. The exception to this rule is when the target object is the thread | |
2862 // doing the operation, in which case we know that the thread won't exit until the | |
2863 // operation is done (all exits being voluntary). There are a few cases where it is | |
2864 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2865 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2866 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2867 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2868 // implementation is local to this file, we always lock Threads_lock for that one. | |
2869 | |
2870 static void thread_entry(JavaThread* thread, TRAPS) { | |
2871 HandleMark hm(THREAD); | |
2872 Handle obj(THREAD, thread->threadObj()); | |
2873 JavaValue result(T_VOID); | |
2874 JavaCalls::call_virtual(&result, | |
2875 obj, | |
1142 | 2876 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2877 vmSymbols::run_method_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2878 vmSymbols::void_method_signature(), |
0 | 2879 THREAD); |
2880 } | |
2881 | |
2882 | |
2883 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2884 JVMWrapper("JVM_StartThread"); | |
2885 JavaThread *native_thread = NULL; | |
2886 | |
2887 // We cannot hold the Threads_lock when we throw an exception, | |
2888 // due to rank ordering issues. Example: we might need to grab the | |
2889 // Heap_lock while we construct the exception. | |
2890 bool throw_illegal_thread_state = false; | |
2891 | |
2892 // We must release the Threads_lock before we can post a jvmti event | |
2893 // in Thread::start. | |
2894 { | |
2895 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2896 // we operate. | |
2897 MutexLocker mu(Threads_lock); | |
2898 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2899 // 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
|
2900 // 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
|
2901 // 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
|
2902 // 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
|
2903 // (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
|
2904 // 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
|
2905 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
|
2906 throw_illegal_thread_state = true; |
0 | 2907 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2908 // 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
|
2909 // 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
|
2910 |
0 | 2911 jlong size = |
2912 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2913 // Allocate the C++ Thread structure and create the native thread. The | |
2914 // stack size retrieved from java is signed, but the constructor takes | |
2915 // size_t (an unsigned type), so avoid passing negative values which would | |
2916 // result in really large stacks. | |
2917 size_t sz = size > 0 ? (size_t) size : 0; | |
2918 native_thread = new JavaThread(&thread_entry, sz); | |
2919 | |
2920 // At this point it may be possible that no osthread was created for the | |
2921 // JavaThread due to lack of memory. Check for this situation and throw | |
2922 // an exception if necessary. Eventually we may want to change this so | |
2923 // that we only grab the lock if the thread was created successfully - | |
2924 // then we can also do this check and throw the exception in the | |
2925 // JavaThread constructor. | |
2926 if (native_thread->osthread() != NULL) { | |
2927 // Note: the current thread is not being used within "prepare". | |
2928 native_thread->prepare(jthread); | |
2929 } | |
2930 } | |
2931 } | |
2932 | |
2933 if (throw_illegal_thread_state) { | |
2934 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2935 } | |
2936 | |
2937 assert(native_thread != NULL, "Starting null thread?"); | |
2938 | |
2939 if (native_thread->osthread() == NULL) { | |
2940 // No one should hold a reference to the 'native_thread'. | |
2941 delete native_thread; | |
2942 if (JvmtiExport::should_post_resource_exhausted()) { | |
2943 JvmtiExport::post_resource_exhausted( | |
2944 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2945 "unable to create new native thread"); | |
2946 } | |
2947 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2948 "unable to create new native thread"); | |
2949 } | |
2950 | |
2951 Thread::start(native_thread); | |
2952 | |
2953 JVM_END | |
2954 | |
2955 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2956 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2957 // 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
|
2958 // same thread as the sender, no safepoint is needed. |
0 | 2959 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2960 JVMWrapper("JVM_StopThread"); | |
2961 | |
2962 oop java_throwable = JNIHandles::resolve(throwable); | |
2963 if (java_throwable == NULL) { | |
2964 THROW(vmSymbols::java_lang_NullPointerException()); | |
2965 } | |
2966 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2967 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
|
2968 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2969 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
17937
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drchase
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17889
diff
changeset
|
2970 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2971 // First check if thread is alive |
0 | 2972 if (receiver != NULL) { |
2973 // Check if exception is getting thrown at self (use oop equality, since the | |
2974 // target object might exit) | |
2975 if (java_thread == thread->threadObj()) { | |
2976 THROW_OOP(java_throwable); | |
2977 } else { | |
2978 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2979 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2980 } | |
2981 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2982 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2983 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2984 // - 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
|
2985 // - 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
|
2986 // 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
|
2987 // 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
|
2988 // 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
|
2989 // 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
|
2990 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
|
2991 } |
0 | 2992 JVM_END |
2993 | |
2994 | |
2995 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2996 JVMWrapper("JVM_IsThreadAlive"); | |
2997 | |
2998 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2999 return java_lang_Thread::is_alive(thread_oop); | |
3000 JVM_END | |
3001 | |
3002 | |
3003 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
3004 JVMWrapper("JVM_SuspendThread"); | |
3005 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3006 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
3007 | |
3008 if (receiver != NULL) { | |
3009 // thread has run and has not exited (still on threads list) | |
3010 | |
3011 { | |
3012 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
3013 if (receiver->is_external_suspend()) { | |
3014 // Don't allow nested external suspend requests. We can't return | |
3015 // an error from this interface so just ignore the problem. | |
3016 return; | |
3017 } | |
3018 if (receiver->is_exiting()) { // thread is in the process of exiting | |
3019 return; | |
3020 } | |
3021 receiver->set_external_suspend(); | |
3022 } | |
3023 | |
3024 // java_suspend() will catch threads in the process of exiting | |
3025 // and will ignore them. | |
3026 receiver->java_suspend(); | |
3027 | |
3028 // It would be nice to have the following assertion in all the | |
3029 // time, but it is possible for a racing resume request to have | |
3030 // resumed this thread right after we suspended it. Temporarily | |
3031 // enable this assertion if you are chasing a different kind of | |
3032 // bug. | |
3033 // | |
3034 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
3035 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
3036 } | |
3037 JVM_END | |
3038 | |
3039 | |
3040 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3041 JVMWrapper("JVM_ResumeThread"); | |
3042 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3043 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3044 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3045 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3046 // looks at it. | |
3047 MutexLocker ml(Threads_lock); | |
3048 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3049 if (thr != NULL) { | |
3050 // the thread has run and is not in the process of exiting | |
3051 thr->java_resume(); | |
3052 } | |
3053 JVM_END | |
3054 | |
3055 | |
3056 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3057 JVMWrapper("JVM_SetThreadPriority"); | |
3058 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3059 MutexLocker ml(Threads_lock); | |
3060 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3061 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3062 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3063 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3064 Thread::set_priority(thr, (ThreadPriority)prio); | |
3065 } | |
3066 JVM_END | |
3067 | |
3068 | |
3069 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3070 JVMWrapper("JVM_Yield"); | |
3071 if (os::dont_yield()) return; | |
4006 | 3072 #ifndef USDT2 |
1324
e392695de029
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fparain
parents:
1144
diff
changeset
|
3073 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3074 #else /* USDT2 */ |
3075 HOTSPOT_THREAD_YIELD(); | |
3076 #endif /* USDT2 */ | |
0 | 3077 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3078 // Critical for similar threading behaviour | |
3079 if (ConvertYieldToSleep) { | |
3080 os::sleep(thread, MinSleepInterval, false); | |
3081 } else { | |
3082 os::yield(); | |
3083 } | |
3084 JVM_END | |
3085 | |
3086 | |
3087 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3088 JVMWrapper("JVM_Sleep"); | |
3089 | |
3090 if (millis < 0) { | |
3091 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3092 } | |
3093 | |
3094 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3095 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3096 } | |
3097 | |
3098 // Save current thread state and restore it at the end of this block. | |
3099 // And set new thread state to SLEEPING. | |
3100 JavaThreadSleepState jtss(thread); | |
3101 | |
4006 | 3102 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3103 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3104 #else /* USDT2 */ |
3105 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3106 millis); | |
3107 #endif /* USDT2 */ | |
1324
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parents:
1144
diff
changeset
|
3108 |
10405 | 3109 EventThreadSleep event; |
3110 | |
0 | 3111 if (millis == 0) { |
3112 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3113 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3114 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3115 // for SOLARIS | |
3116 if (ConvertSleepToYield) { | |
3117 os::yield(); | |
3118 } else { | |
3119 ThreadState old_state = thread->osthread()->get_state(); | |
3120 thread->osthread()->set_state(SLEEPING); | |
3121 os::sleep(thread, MinSleepInterval, false); | |
3122 thread->osthread()->set_state(old_state); | |
3123 } | |
3124 } else { | |
3125 ThreadState old_state = thread->osthread()->get_state(); | |
3126 thread->osthread()->set_state(SLEEPING); | |
3127 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3128 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3129 // us while we were sleeping. We do not overwrite those. | |
3130 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3131 if (event.should_commit()) { |
3132 event.set_time(millis); | |
3133 event.commit(); | |
3134 } | |
4006 | 3135 #ifndef USDT2 |
1324
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3136 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3137 #else /* USDT2 */ |
3138 HOTSPOT_THREAD_SLEEP_END( | |
3139 1); | |
3140 #endif /* USDT2 */ | |
0 | 3141 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3142 // to properly restore the thread state. That's likely wrong. | |
3143 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3144 } | |
3145 } | |
3146 thread->osthread()->set_state(old_state); | |
3147 } | |
10405 | 3148 if (event.should_commit()) { |
3149 event.set_time(millis); | |
3150 event.commit(); | |
3151 } | |
4006 | 3152 #ifndef USDT2 |
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3153 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3154 #else /* USDT2 */ |
3155 HOTSPOT_THREAD_SLEEP_END( | |
3156 0); | |
3157 #endif /* USDT2 */ | |
0 | 3158 JVM_END |
3159 | |
3160 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3161 JVMWrapper("JVM_CurrentThread"); | |
3162 oop jthread = thread->threadObj(); | |
3163 assert (thread != NULL, "no current thread!"); | |
3164 return JNIHandles::make_local(env, jthread); | |
3165 JVM_END | |
3166 | |
3167 | |
3168 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3169 JVMWrapper("JVM_CountStackFrames"); | |
3170 | |
3171 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3172 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3173 bool throw_illegal_thread_state = false; | |
3174 int count = 0; | |
3175 | |
3176 { | |
3177 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3178 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3179 // acquire of the lock | |
3180 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3181 | |
3182 if (thr == NULL) { | |
3183 // do nothing | |
3184 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3185 // Check whether this java thread has been suspended already. If not, throws | |
3186 // IllegalThreadStateException. We defer to throw that exception until | |
3187 // Threads_lock is released since loading exception class has to leave VM. | |
3188 // The correct way to test a thread is actually suspended is | |
3189 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3190 // the Threads_lock. The above tests are sufficient for our purposes | |
3191 // provided the walkability of the stack is stable - which it isn't | |
3192 // 100% but close enough for most practical purposes. | |
3193 throw_illegal_thread_state = true; | |
3194 } else { | |
3195 // Count all java activation, i.e., number of vframes | |
3196 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3197 // Native frames are not counted | |
3198 if (!vfst.method()->is_native()) count++; | |
3199 } | |
3200 } | |
3201 } | |
3202 | |
3203 if (throw_illegal_thread_state) { | |
3204 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3205 "this thread is not suspended"); | |
3206 } | |
3207 return count; | |
3208 JVM_END | |
3209 | |
3210 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3211 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3212 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3213 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3214 // outside the critical section. Threads_lock is hot so we want to minimize | |
3215 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3216 // two steps. The 1st phase, performed under Threads_lock, would return | |
3217 // a closure that'd be invoked after Threads_lock was dropped. | |
3218 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3219 // admit spurious wakeups. | |
3220 | |
3221 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3222 JVMWrapper("JVM_Interrupt"); | |
3223 | |
3224 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3225 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3226 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3227 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3228 // acquire of the lock | |
3229 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3230 if (thr != NULL) { | |
3231 Thread::interrupt(thr); | |
3232 } | |
3233 JVM_END | |
3234 | |
3235 | |
3236 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3237 JVMWrapper("JVM_IsInterrupted"); | |
3238 | |
3239 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3240 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3241 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3242 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3243 // acquire of the lock | |
3244 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3245 if (thr == NULL) { | |
3246 return JNI_FALSE; | |
3247 } else { | |
3248 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3249 } | |
3250 JVM_END | |
3251 | |
3252 | |
3253 // Return true iff the current thread has locked the object passed in | |
3254 | |
3255 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3256 JVMWrapper("JVM_HoldsLock"); | |
3257 assert(THREAD->is_Java_thread(), "sanity check"); | |
3258 if (obj == NULL) { | |
3259 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3260 } | |
3261 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3262 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3263 JVM_END | |
3264 | |
3265 | |
3266 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3267 JVMWrapper("JVM_DumpAllStacks"); | |
3268 VM_PrintThreads op; | |
3269 VMThread::execute(&op); | |
3270 if (JvmtiExport::should_post_data_dump()) { | |
3271 JvmtiExport::post_data_dump(); | |
3272 } | |
3273 JVM_END | |
3274 | |
4006 | 3275 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3276 JVMWrapper("JVM_SetNativeThreadName"); | |
3277 ResourceMark rm(THREAD); | |
3278 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3279 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3280 // Thread naming only supported for the current thread, doesn't work for | |
3281 // target threads. | |
3282 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3283 // we don't set the name of an attached thread to avoid stepping | |
3284 // on other programs | |
3285 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3286 os::set_native_thread_name(thread_name); | |
3287 } | |
3288 JVM_END | |
0 | 3289 |
3290 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3291 | |
3292 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3293 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3294 if (jthread->privileged_stack_top() == NULL) return false; | |
3295 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3296 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3297 if (loader == NULL) return true; | |
3298 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3299 if (trusted) return true; | |
3300 } | |
3301 return false; | |
3302 } | |
3303 | |
3304 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3305 JVMWrapper("JVM_CurrentLoadedClass"); | |
3306 ResourceMark rm(THREAD); | |
3307 | |
3308 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3309 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3310 bool trusted = is_trusted_frame(thread, &vfst); | |
3311 if (trusted) return NULL; | |
3312 | |
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3313 Method* m = vfst.method(); |
0 | 3314 if (!m->is_native()) { |
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3315 InstanceKlass* holder = m->method_holder(); |
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3316 oop loader = holder->class_loader(); |
0 | 3317 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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3318 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3319 } |
3320 } | |
3321 } | |
3322 return NULL; | |
3323 JVM_END | |
3324 | |
3325 | |
3326 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3327 JVMWrapper("JVM_CurrentClassLoader"); | |
3328 ResourceMark rm(THREAD); | |
3329 | |
3330 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3331 | |
3332 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3333 bool trusted = is_trusted_frame(thread, &vfst); | |
3334 if (trusted) return NULL; | |
3335 | |
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3336 Method* m = vfst.method(); |
0 | 3337 if (!m->is_native()) { |
6940
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3338 InstanceKlass* holder = m->method_holder(); |
0 | 3339 assert(holder->is_klass(), "just checking"); |
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3340 oop loader = holder->class_loader(); |
0 | 3341 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3342 return JNIHandles::make_local(env, loader); | |
3343 } | |
3344 } | |
3345 } | |
3346 return NULL; | |
3347 JVM_END | |
3348 | |
3349 | |
3350 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3351 JVMWrapper("JVM_GetClassContext"); | |
3352 ResourceMark rm(THREAD); | |
3353 JvmtiVMObjectAllocEventCollector oam; | |
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3354 vframeStream vfst(thread); |
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3355 |
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3356 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3357 // This must only be called from SecurityManager.getClassContext |
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3358 Method* m = vfst.method(); |
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3359 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3360 m->name() == vmSymbols::getClassContext_name() && |
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3361 m->signature() == vmSymbols::void_class_array_signature())) { |
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3362 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3363 } |
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3364 } |
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3365 |
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3366 // Collect method holders |
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c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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3367 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3368 for (; !vfst.at_end(); vfst.security_next()) { |
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3369 Method* m = vfst.method(); |
0 | 3370 // Native frames are not returned |
8866
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3371 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3372 Klass* holder = m->method_holder(); |
0 | 3373 assert(holder->is_klass(), "just checking"); |
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3374 klass_array->append(holder); |
0 | 3375 } |
3376 } | |
3377 | |
3378 // Create result array of type [Ljava/lang/Class; | |
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3379 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3380 // Fill in mirrors corresponding to method holders |
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3381 for (int i = 0; i < klass_array->length(); i++) { |
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3382 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3383 } |
3384 | |
3385 return (jobjectArray) JNIHandles::make_local(env, result); | |
3386 JVM_END | |
3387 | |
3388 | |
3389 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3390 JVMWrapper("JVM_ClassDepth"); | |
3391 ResourceMark rm(THREAD); | |
3392 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3393 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3394 | |
3395 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3396 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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3397 if (class_name_sym == NULL) { |
0 | 3398 return -1; |
3399 } | |
3400 | |
3401 int depth = 0; | |
3402 | |
3403 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3404 if (!vfst.method()->is_native()) { | |
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3405 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3406 assert(holder->is_klass(), "just checking"); |
6940
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|
3407 if (holder->name() == class_name_sym) { |
0 | 3408 return depth; |
3409 } | |
3410 depth++; | |
3411 } | |
3412 } | |
3413 return -1; | |
3414 JVM_END | |
3415 | |
3416 | |
3417 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3418 JVMWrapper("JVM_ClassLoaderDepth"); | |
3419 ResourceMark rm(THREAD); | |
3420 int depth = 0; | |
3421 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3422 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3423 bool trusted = is_trusted_frame(thread, &vfst); | |
3424 if (trusted) return -1; | |
3425 | |
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3426 Method* m = vfst.method(); |
0 | 3427 if (!m->is_native()) { |
6940
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|
3428 InstanceKlass* holder = m->method_holder(); |
0 | 3429 assert(holder->is_klass(), "just checking"); |
6940
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|
3430 oop loader = holder->class_loader(); |
0 | 3431 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3432 return depth; | |
3433 } | |
3434 depth++; | |
3435 } | |
3436 } | |
3437 return -1; | |
3438 JVM_END | |
3439 | |
3440 | |
3441 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3442 | |
3443 | |
3444 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3445 JVMWrapper("JVM_GetSystemPackage"); | |
3446 ResourceMark rm(THREAD); | |
3447 JvmtiVMObjectAllocEventCollector oam; | |
3448 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3449 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3450 return (jstring) JNIHandles::make_local(result); | |
3451 JVM_END | |
3452 | |
3453 | |
3454 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3455 JVMWrapper("JVM_GetSystemPackages"); | |
3456 JvmtiVMObjectAllocEventCollector oam; | |
3457 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3458 return (jobjectArray) JNIHandles::make_local(result); | |
3459 JVM_END | |
3460 | |
3461 | |
3462 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3463 | |
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3464 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3465 if (current_class == NULL) { |
3466 return true; | |
3467 } | |
3468 if ((current_class == field_class) || access.is_public()) { | |
3469 return true; | |
3470 } | |
3471 | |
3472 if (access.is_protected()) { | |
3473 // See if current_class is a subclass of field_class | |
6983 | 3474 if (current_class->is_subclass_of(field_class)) { |
0 | 3475 return true; |
3476 } | |
3477 } | |
3478 | |
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3479 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3480 } |
3481 | |
3482 | |
3483 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3484 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3485 JVMWrapper("JVM_AllocateNewObject"); | |
3486 JvmtiVMObjectAllocEventCollector oam; | |
3487 // Receiver is not used | |
3488 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3489 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3490 | |
3491 // Cannot instantiate primitive types | |
3492 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3493 ResourceMark rm(THREAD); | |
3494 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3495 } | |
3496 | |
3497 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3498 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3499 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3500 ResourceMark rm(THREAD); |
3501 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3502 } | |
3503 | |
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3504 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3505 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3506 |
3507 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3508 | |
3509 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3510 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3511 | |
3512 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3513 curr_klass->initialize(CHECK_NULL); | |
3514 | |
3515 methodHandle m (THREAD, | |
3516 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3517 vmSymbols::void_method_signature())); | |
3518 if (m.is_null()) { | |
3519 ResourceMark rm(THREAD); | |
3520 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3521 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3522 vmSymbols::object_initializer_name(), |
3523 vmSymbols::void_method_signature())); | |
3524 } | |
3525 | |
3526 if (curr_klass == init_klass && !m->is_public()) { | |
3527 // Calling the constructor for class 'curr_klass'. | |
3528 // Only allow calls to a public no-arg constructor. | |
3529 // This path corresponds to creating an Externalizable object. | |
3530 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3531 } | |
3532 | |
3533 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3534 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3535 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3536 } | |
3537 | |
3538 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3539 // Call constructor m. This might call a constructor higher up in the hierachy | |
3540 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3541 | |
3542 return JNIHandles::make_local(obj()); | |
3543 JVM_END | |
3544 | |
3545 | |
3546 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3547 JVMWrapper("JVM_AllocateNewArray"); | |
3548 JvmtiVMObjectAllocEventCollector oam; | |
3549 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3550 | |
3551 if (java_lang_Class::is_primitive(mirror)) { | |
3552 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3553 } | |
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3554 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3555 oop result; |
3556 | |
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changeset
|
3557 if (k->oop_is_typeArray()) { |
0 | 3558 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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diff
changeset
|
3559 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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changeset
|
3560 } else if (k->oop_is_objArray()) { |
0 | 3561 // objArray |
6831
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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changeset
|
3562 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3563 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3564 result = oak->allocate(length, CHECK_NULL); | |
3565 } else { | |
3566 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3567 } | |
3568 return JNIHandles::make_local(env, result); | |
3569 JVM_END | |
3570 | |
3571 | |
3572 // Return the first non-null class loader up the execution stack, or null | |
3573 // if only code from the null class loader is on the stack. | |
3574 | |
3575 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3576 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3577 // UseNewReflection | |
3578 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
|
3579 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3580 if (loader != NULL) { |
3581 return JNIHandles::make_local(env, loader); | |
3582 } | |
3583 } | |
3584 return NULL; | |
3585 JVM_END | |
3586 | |
3587 | |
3588 // Load a class relative to the most recent class on the stack with a non-null | |
3589 // classloader. | |
3590 // This function has been deprecated and should not be considered part of the | |
3591 // specified JVM interface. | |
3592 | |
3593 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3594 jclass currClass, jstring currClassName)) | |
3595 JVMWrapper("JVM_LoadClass0"); | |
3596 // Receiver is not used | |
3597 ResourceMark rm(THREAD); | |
3598 | |
3599 // Class name argument is not guaranteed to be in internal format | |
3600 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3601 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3602 | |
3603 const char* str = java_lang_String::as_utf8_string(string()); | |
3604 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3605 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3606 // It's impossible to create this class; the name cannot fit |
3607 // into the constant pool. | |
3608 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3609 } | |
3610 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3611 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3612 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3613 // Find the most recent class on the stack with a non-null classloader | |
3614 oop loader = NULL; | |
3615 oop protection_domain = NULL; | |
3616 if (curr_klass.is_null()) { | |
3617 for (vframeStream vfst(thread); | |
3618 !vfst.at_end() && loader == NULL; | |
3619 vfst.next()) { | |
3620 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
|
3621 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
|
3622 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
|
3623 protection_domain = holder->protection_domain(); |
0 | 3624 } |
3625 } | |
3626 } else { | |
6725
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|
3627 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
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3628 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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changeset
|
3629 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3630 } |
3631 Handle h_loader(THREAD, loader); | |
3632 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3633 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
|
3634 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3635 if (TraceClassResolution && result != NULL) { |
6725
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changeset
|
3636 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
|
3637 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3638 return result; |
0 | 3639 JVM_END |
3640 | |
3641 | |
3642 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3643 | |
3644 | |
3645 // resolve array handle and check arguments | |
3646 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3647 if (arr == NULL) { | |
3648 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3649 } | |
3650 oop a = JNIHandles::resolve_non_null(arr); | |
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|
3651 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3652 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3653 } | |
3654 return arrayOop(a); | |
3655 } | |
3656 | |
3657 | |
3658 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3659 JVMWrapper("JVM_GetArrayLength"); | |
3660 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3661 return a->length(); | |
3662 JVM_END | |
3663 | |
3664 | |
3665 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3666 JVMWrapper("JVM_Array_Get"); | |
3667 JvmtiVMObjectAllocEventCollector oam; | |
3668 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3669 jvalue value; | |
3670 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3671 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3672 return JNIHandles::make_local(env, box); | |
3673 JVM_END | |
3674 | |
3675 | |
3676 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3677 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3678 jvalue value; | |
3679 value.i = 0; // to initialize value before getting used in CHECK | |
3680 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3681 assert(a->is_typeArray(), "just checking"); | |
3682 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3683 BasicType wide_type = (BasicType) wCode; | |
3684 if (type != wide_type) { | |
3685 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3686 } | |
3687 return value; | |
3688 JVM_END | |
3689 | |
3690 | |
3691 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3692 JVMWrapper("JVM_SetArrayElement"); | |
3693 arrayOop a = check_array(env, arr, false, CHECK); | |
3694 oop box = JNIHandles::resolve(val); | |
3695 jvalue value; | |
3696 value.i = 0; // to initialize value before getting used in CHECK | |
3697 BasicType value_type; | |
3698 if (a->is_objArray()) { | |
3699 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3700 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3701 } else { | |
3702 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3703 } | |
3704 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3705 JVM_END | |
3706 | |
3707 | |
3708 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3709 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3710 arrayOop a = check_array(env, arr, true, CHECK); | |
3711 assert(a->is_typeArray(), "just checking"); | |
3712 BasicType value_type = (BasicType) vCode; | |
3713 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3714 JVM_END | |
3715 | |
3716 | |
3717 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3718 JVMWrapper("JVM_NewArray"); | |
3719 JvmtiVMObjectAllocEventCollector oam; | |
3720 oop element_mirror = JNIHandles::resolve(eltClass); | |
3721 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3722 return JNIHandles::make_local(env, result); | |
3723 JVM_END | |
3724 | |
3725 | |
3726 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3727 JVMWrapper("JVM_NewMultiArray"); | |
3728 JvmtiVMObjectAllocEventCollector oam; | |
3729 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3730 oop element_mirror = JNIHandles::resolve(eltClass); | |
3731 assert(dim_array->is_typeArray(), "just checking"); | |
3732 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3733 return JNIHandles::make_local(env, result); | |
3734 JVM_END | |
3735 | |
3736 | |
3737 // Networking library support //////////////////////////////////////////////////////////////////// | |
3738 | |
3739 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3740 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3741 return 0; |
0 | 3742 JVM_END |
3743 | |
3744 | |
3745 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3746 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3747 return os::socket(domain, type, protocol); |
0 | 3748 JVM_END |
3749 | |
3750 | |
3751 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3752 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3753 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3754 return os::socket_close(fd); |
0 | 3755 JVM_END |
3756 | |
3757 | |
3758 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3759 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3760 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3761 return os::socket_shutdown(fd, howto); |
0 | 3762 JVM_END |
3763 | |
3764 | |
3765 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3766 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3767 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3768 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3769 JVM_END |
3770 | |
3771 | |
3772 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3773 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3774 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3775 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3776 JVM_END |
3777 | |
3778 | |
3779 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3780 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3781 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3782 return os::timeout(fd, timeout); |
0 | 3783 JVM_END |
3784 | |
3785 | |
3786 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3787 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3788 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3789 return os::listen(fd, count); |
0 | 3790 JVM_END |
3791 | |
3792 | |
3793 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3794 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3795 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3796 return os::connect(fd, him, (socklen_t)len); |
0 | 3797 JVM_END |
3798 | |
3799 | |
3800 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3801 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3802 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3803 return os::bind(fd, him, (socklen_t)len); |
0 | 3804 JVM_END |
3805 | |
3806 | |
3807 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3808 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3809 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3810 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3811 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3812 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3813 return result; |
0 | 3814 JVM_END |
3815 | |
3816 | |
3817 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3818 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3819 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3820 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3821 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
|
3822 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3823 return result; |
0 | 3824 JVM_END |
3825 | |
3826 | |
3827 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3828 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3829 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3830 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3831 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
|
3832 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3833 return result; |
0 | 3834 JVM_END |
3835 | |
3836 | |
3837 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3838 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3839 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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4006
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changeset
|
3840 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3841 JVM_END |
3842 | |
3843 | |
3844 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3845 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3846 //%note jvm_r6 | |
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3847 return os::socket_available(fd, pbytes); |
0 | 3848 JVM_END |
3849 | |
3850 | |
3851 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3852 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3853 //%note jvm_r6 | |
4717
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3854 socklen_t socklen = (socklen_t)(*optlen); |
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|
3855 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
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3856 *optlen = (int)socklen; |
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|
3857 return result; |
0 | 3858 JVM_END |
3859 | |
3860 | |
3861 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3862 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3863 //%note jvm_r6 | |
4717
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|
3864 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3865 JVM_END |
3866 | |
4717
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|
3867 |
0 | 3868 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3869 JVMWrapper("JVM_GetHostName"); | |
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|
3870 return os::get_host_name(name, namelen); |
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3871 JVM_END |
0 | 3872 |
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3873 |
0 | 3874 // Library support /////////////////////////////////////////////////////////////////////////// |
3875 | |
3876 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3877 //%note jvm_ct | |
3878 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3879 char ebuf[1024]; | |
3880 void *load_result; | |
3881 { | |
3882 ThreadToNativeFromVM ttnfvm(thread); | |
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|
3883 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3884 } |
3885 if (load_result == NULL) { | |
3886 char msg[1024]; | |
3887 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3888 // Since 'ebuf' may contain a string encoded using | |
3889 // platform encoding scheme, we need to pass | |
3890 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3891 // as the last argument. See bug 6367357. | |
3892 Handle h_exception = | |
3893 Exceptions::new_exception(thread, | |
3894 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3895 msg, Exceptions::unsafe_to_utf8); | |
3896 | |
3897 THROW_HANDLE_0(h_exception); | |
3898 } | |
3899 return load_result; | |
3900 JVM_END | |
3901 | |
3902 | |
3903 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3904 JVMWrapper("JVM_UnloadLibrary"); | |
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|
3905 os::dll_unload(handle); |
0 | 3906 JVM_END |
3907 | |
3908 | |
3909 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3910 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
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3911 return os::dll_lookup(handle, name); |
0 | 3912 JVM_END |
3913 | |
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3914 |
0 | 3915 // Floating point support //////////////////////////////////////////////////////////////////// |
3916 | |
3917 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3918 JVMWrapper("JVM_IsNaN"); | |
3919 return g_isnan(a); | |
3920 JVM_END | |
3921 | |
3922 | |
3923 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3924 | |
3925 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3926 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3927 return Threads::is_supported_jni_version_including_1_1(version); | |
3928 JVM_END | |
3929 | |
3930 | |
3931 // String support /////////////////////////////////////////////////////////////////////////// | |
3932 | |
3933 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3934 JVMWrapper("JVM_InternString"); | |
3935 JvmtiVMObjectAllocEventCollector oam; | |
3936 if (str == NULL) return NULL; | |
3937 oop string = JNIHandles::resolve_non_null(str); | |
3938 oop result = StringTable::intern(string, CHECK_NULL); | |
3939 return (jstring) JNIHandles::make_local(env, result); | |
3940 JVM_END | |
3941 | |
3942 | |
3943 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3944 | |
3945 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3946 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3947 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3948 // that only works with java threads. | |
3949 | |
3950 | |
3951 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3952 VM_Exit::block_if_vm_exited(); | |
3953 JVMWrapper("JVM_RawMonitorCreate"); | |
3954 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3955 } | |
3956 | |
3957 | |
3958 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3959 VM_Exit::block_if_vm_exited(); | |
3960 JVMWrapper("JVM_RawMonitorDestroy"); | |
3961 delete ((Mutex*) mon); | |
3962 } | |
3963 | |
3964 | |
3965 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3966 VM_Exit::block_if_vm_exited(); | |
3967 JVMWrapper("JVM_RawMonitorEnter"); | |
3968 ((Mutex*) mon)->jvm_raw_lock(); | |
3969 return 0; | |
3970 } | |
3971 | |
3972 | |
3973 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3974 VM_Exit::block_if_vm_exited(); | |
3975 JVMWrapper("JVM_RawMonitorExit"); | |
3976 ((Mutex*) mon)->jvm_raw_unlock(); | |
3977 } | |
3978 | |
3979 | |
3980 // Support for Serialization | |
3981 | |
3982 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3983 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3984 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3985 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3986 | |
3987 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3988 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3989 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3990 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3991 | |
3992 | |
3993 void initialize_converter_functions() { | |
3994 if (JDK_Version::is_gte_jdk14x_version()) { | |
3995 // These functions only exist for compatibility with 1.3.1 and earlier | |
3996 return; | |
3997 } | |
3998 | |
3999 // called from universe_post_init() | |
4000 assert( | |
4001 int_bits_to_float_fn == NULL && | |
4002 long_bits_to_double_fn == NULL && | |
4003 float_to_int_bits_fn == NULL && | |
4004 double_to_long_bits_fn == NULL , | |
4005 "initialization done twice" | |
4006 ); | |
4007 // initialize | |
4008 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
4009 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
4010 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
4011 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
4012 // verify | |
4013 assert( | |
4014 int_bits_to_float_fn != NULL && | |
4015 long_bits_to_double_fn != NULL && | |
4016 float_to_int_bits_fn != NULL && | |
4017 double_to_long_bits_fn != NULL , | |
4018 "initialization failed" | |
4019 ); | |
4020 } | |
4021 | |
4022 | |
4023 | |
4024 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4025 | |
18051 | 4026 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
4027 Handle loader, Handle protection_domain, | |
4028 jboolean throwError, TRAPS) { | |
0 | 4029 // Security Note: |
4030 // The Java level wrapper will perform the necessary security check allowing | |
18051 | 4031 // us to pass the NULL as the initiating class loader. The VM is responsible for |
4032 // the checkPackageAccess relative to the initiating class loader via the | |
4033 // protection_domain. The protection_domain is passed as NULL by the java code | |
4034 // if there is no security manager in 3-arg Class.forName(). | |
6725
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|
4035 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
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diff
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|
4036 |
0 | 4037 KlassHandle klass_handle(THREAD, klass); |
4038 // Check if we should initialize the class | |
4039 if (init && klass_handle->oop_is_instance()) { | |
4040 klass_handle->initialize(CHECK_NULL); | |
4041 } | |
4042 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4043 } | |
4044 | |
4045 | |
4046 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4047 | |
4048 #ifndef PRODUCT | |
4049 | |
4050 extern "C" { | |
4051 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4052 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4053 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4054 } | |
4055 | |
4056 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4057 JVMWrapper("JVM_AccessBoolVMFlag"); | |
12322
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diff
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|
4058 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4059 JVM_END |
4060 | |
4061 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4062 JVMWrapper("JVM_AccessVMIntFlag"); | |
4063 intx v; | |
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diff
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|
4064 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4065 *value = (jint)v; |
4066 return result; | |
4067 JVM_END | |
4068 | |
4069 | |
4070 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4071 JVMWrapper("JVM_VMBreakPoint"); | |
4072 oop the_obj = JNIHandles::resolve(obj); | |
4073 BREAKPOINT; | |
4074 JVM_END | |
4075 | |
4076 | |
4077 #endif | |
4078 | |
4079 | |
4080 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4081 | |
4082 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4083 JVMWrapper("JVM_InvokeMethod"); | |
4084 Handle method_handle; | |
4085 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4086 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4087 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4088 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4089 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4090 jobject res = JNIHandles::make_local(env, result); | |
4091 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4092 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4093 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4094 if (java_lang_Class::is_primitive(ret_type)) { | |
4095 // Only for primitive type vm allocates memory for java object. | |
4096 // See box() method. | |
4097 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4098 } | |
4099 } | |
4100 return res; | |
4101 } else { | |
4102 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4103 } | |
4104 JVM_END | |
4105 | |
4106 | |
4107 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4108 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4109 oop constructor_mirror = JNIHandles::resolve(c); | |
4110 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4111 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4112 jobject res = JNIHandles::make_local(env, result); | |
4113 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4114 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4115 } | |
4116 return res; | |
4117 JVM_END | |
4118 | |
4119 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4120 | |
4121 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4122 JVMWrapper("JVM_SupportsCX8"); | |
4123 return VM_Version::supports_cx8(); | |
4124 JVM_END | |
4125 | |
4126 | |
4127 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4128 JVMWrapper("JVM_CX8Field"); | |
4129 jlong res; | |
4130 oop o = JNIHandles::resolve(obj); | |
4131 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4132 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4133 | |
4134 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4135 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4136 | |
4137 return res == oldVal; | |
4138 JVM_END | |
4139 | |
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4140 // DTrace /////////////////////////////////////////////////////////////////// |
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|
4141 |
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|
4142 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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|
4143 JVMWrapper("JVM_DTraceGetVersion"); |
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|
4144 return (jint)JVM_TRACING_DTRACE_VERSION; |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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|
4145 JVM_END |
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|
4146 |
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|
4147 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4148 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4149 JVM_DTraceProvider* providers)) |
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|
4150 JVMWrapper("JVM_DTraceActivate"); |
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|
4151 return DTraceJSDT::activate( |
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|
4152 version, module_name, providers_count, providers, CHECK_0); |
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|
4153 JVM_END |
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4154 |
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4155 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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|
4156 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4157 return DTraceJSDT::is_probe_enabled(method); |
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|
4158 JVM_END |
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|
4159 |
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4160 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4161 JVMWrapper("JVM_DTraceDispose"); |
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4162 DTraceJSDT::dispose(handle); |
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|
4163 JVM_END |
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|
4164 |
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4165 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4166 JVMWrapper("JVM_DTraceIsSupported"); |
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4167 return DTraceJSDT::is_supported(); |
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4168 JVM_END |
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4169 |
0 | 4170 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4171 // jvmti agent threads, and JNI attaching threads are skipped) | |
4172 // See CR 6404306 regarding JNI attaching threads | |
4173 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4174 ResourceMark rm(THREAD); | |
4175 ThreadsListEnumerator tle(THREAD, false, false); | |
4176 JvmtiVMObjectAllocEventCollector oam; | |
4177 | |
4178 int num_threads = tle.num_threads(); | |
1142 | 4179 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4180 objArrayHandle threads_ah(THREAD, r); |
4181 | |
4182 for (int i = 0; i < num_threads; i++) { | |
4183 Handle h = tle.get_threadObj(i); | |
4184 threads_ah->obj_at_put(i, h()); | |
4185 } | |
4186 | |
4187 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4188 JVM_END | |
4189 | |
4190 | |
4191 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4192 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4193 // the corresponding entry in the given threads array | |
4194 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4195 JVMWrapper("JVM_DumpThreads"); | |
4196 JvmtiVMObjectAllocEventCollector oam; | |
4197 | |
4198 // Check if threads is null | |
4199 if (threads == NULL) { | |
4200 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4201 } | |
4202 | |
4203 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4204 objArrayHandle ah(THREAD, a); | |
4205 int num_threads = ah->length(); | |
4206 // check if threads is non-empty array | |
4207 if (num_threads == 0) { | |
4208 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4209 } | |
4210 | |
4211 // check if threads is not an array of objects of Thread class | |
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4212 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4213 if (k != SystemDictionary::Thread_klass()) { |
0 | 4214 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4215 } | |
4216 | |
4217 ResourceMark rm(THREAD); | |
4218 | |
4219 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4220 for (int i = 0; i < num_threads; i++) { | |
4221 oop thread_obj = ah->obj_at(i); | |
4222 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4223 thread_handle_array->append(h); | |
4224 } | |
4225 | |
4226 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4227 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4228 | |
4229 JVM_END | |
4230 | |
4231 // JVM monitoring and management support | |
4232 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4233 return Management::get_jmm_interface(version); | |
4234 JVM_END | |
4235 | |
4236 // com.sun.tools.attach.VirtualMachine agent properties support | |
4237 // | |
4238 // Initialize the agent properties with the properties maintained in the VM | |
4239 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4240 JVMWrapper("JVM_InitAgentProperties"); | |
4241 ResourceMark rm; | |
4242 | |
4243 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4244 | |
4245 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4246 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4247 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4248 return properties; | |
4249 JVM_END | |
4250 | |
4251 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4252 { | |
4253 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4254 JvmtiVMObjectAllocEventCollector oam; | |
4255 | |
4256 if (ofClass == NULL) { | |
4257 return NULL; | |
4258 } | |
4259 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4260 // Special handling for primitive objects | |
4261 if (java_lang_Class::is_primitive(mirror())) { | |
4262 return NULL; | |
4263 } | |
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4264 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4265 if (!k->oop_is_instance()) { |
0 | 4266 return NULL; |
4267 } | |
4268 instanceKlassHandle ik_h(THREAD, k); | |
4269 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4270 if (encl_method_class_idx == 0) { | |
4271 return NULL; | |
4272 } | |
1142 | 4273 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4274 objArrayHandle dest(THREAD, dest_o); |
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4275 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4276 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4277 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4278 if (encl_method_method_idx != 0) { | |
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4279 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4280 extract_low_short_from_int( |
4281 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4282 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4283 dest->obj_at_put(1, str()); | |
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4284 sym = ik_h->constants()->symbol_at( |
0 | 4285 extract_high_short_from_int( |
4286 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4287 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4288 dest->obj_at_put(2, str()); | |
4289 } | |
4290 return (jobjectArray) JNIHandles::make_local(dest()); | |
4291 } | |
4292 JVM_END | |
4293 | |
4294 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4295 jint javaThreadState)) | |
4296 { | |
4297 // If new thread states are added in future JDK and VM versions, | |
4298 // this should check if the JDK version is compatible with thread | |
4299 // states supported by the VM. Return NULL if not compatible. | |
4300 // | |
4301 // This function must map the VM java_lang_Thread::ThreadStatus | |
4302 // to the Java thread state that the JDK supports. | |
4303 // | |
4304 | |
4305 typeArrayHandle values_h; | |
4306 switch (javaThreadState) { | |
4307 case JAVA_THREAD_STATE_NEW : { | |
4308 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4309 values_h = typeArrayHandle(THREAD, r); | |
4310 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4311 break; | |
4312 } | |
4313 case JAVA_THREAD_STATE_RUNNABLE : { | |
4314 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4315 values_h = typeArrayHandle(THREAD, r); | |
4316 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4317 break; | |
4318 } | |
4319 case JAVA_THREAD_STATE_BLOCKED : { | |
4320 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4321 values_h = typeArrayHandle(THREAD, r); | |
4322 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4323 break; | |
4324 } | |
4325 case JAVA_THREAD_STATE_WAITING : { | |
4326 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4327 values_h = typeArrayHandle(THREAD, r); | |
4328 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4329 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4330 break; | |
4331 } | |
4332 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4333 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4334 values_h = typeArrayHandle(THREAD, r); | |
4335 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4336 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4337 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4338 break; | |
4339 } | |
4340 case JAVA_THREAD_STATE_TERMINATED : { | |
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::TERMINATED); | |
4344 break; | |
4345 } | |
4346 default: | |
4347 // Unknown state - probably incompatible JDK version | |
4348 return NULL; | |
4349 } | |
4350 | |
4351 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4352 } | |
4353 JVM_END | |
4354 | |
4355 | |
4356 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4357 jint javaThreadState, | |
4358 jintArray values)) | |
4359 { | |
4360 // If new thread states are added in future JDK and VM versions, | |
4361 // this should check if the JDK version is compatible with thread | |
4362 // states supported by the VM. Return NULL if not compatible. | |
4363 // | |
4364 // This function must map the VM java_lang_Thread::ThreadStatus | |
4365 // to the Java thread state that the JDK supports. | |
4366 // | |
4367 | |
4368 ResourceMark rm; | |
4369 | |
4370 // Check if threads is null | |
4371 if (values == NULL) { | |
4372 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4373 } | |
4374 | |
4375 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4376 typeArrayHandle values_h(THREAD, v); | |
4377 | |
4378 objArrayHandle names_h; | |
4379 switch (javaThreadState) { | |
4380 case JAVA_THREAD_STATE_NEW : { | |
4381 assert(values_h->length() == 1 && | |
4382 values_h->int_at(0) == java_lang_Thread::NEW, | |
4383 "Invalid threadStatus value"); | |
4384 | |
1142 | 4385 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4386 1, /* only 1 substate */ |
4387 CHECK_NULL); | |
4388 names_h = objArrayHandle(THREAD, r); | |
4389 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4390 names_h->obj_at_put(0, name()); | |
4391 break; | |
4392 } | |
4393 case JAVA_THREAD_STATE_RUNNABLE : { | |
4394 assert(values_h->length() == 1 && | |
4395 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4396 "Invalid threadStatus value"); | |
4397 | |
1142 | 4398 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4399 1, /* only 1 substate */ |
4400 CHECK_NULL); | |
4401 names_h = objArrayHandle(THREAD, r); | |
4402 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4403 names_h->obj_at_put(0, name()); | |
4404 break; | |
4405 } | |
4406 case JAVA_THREAD_STATE_BLOCKED : { | |
4407 assert(values_h->length() == 1 && | |
4408 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4409 "Invalid threadStatus value"); | |
4410 | |
1142 | 4411 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4412 1, /* only 1 substate */ |
4413 CHECK_NULL); | |
4414 names_h = objArrayHandle(THREAD, r); | |
4415 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4416 names_h->obj_at_put(0, name()); | |
4417 break; | |
4418 } | |
4419 case JAVA_THREAD_STATE_WAITING : { | |
4420 assert(values_h->length() == 2 && | |
4421 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4422 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4423 "Invalid threadStatus value"); | |
1142 | 4424 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4425 2, /* number of substates */ |
4426 CHECK_NULL); | |
4427 names_h = objArrayHandle(THREAD, r); | |
4428 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4429 CHECK_NULL); | |
4430 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4431 CHECK_NULL); | |
4432 names_h->obj_at_put(0, name0()); | |
4433 names_h->obj_at_put(1, name1()); | |
4434 break; | |
4435 } | |
4436 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4437 assert(values_h->length() == 3 && | |
4438 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4439 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4440 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4441 "Invalid threadStatus value"); | |
1142 | 4442 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4443 3, /* number of substates */ |
4444 CHECK_NULL); | |
4445 names_h = objArrayHandle(THREAD, r); | |
4446 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4447 CHECK_NULL); | |
4448 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4449 CHECK_NULL); | |
4450 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4451 CHECK_NULL); | |
4452 names_h->obj_at_put(0, name0()); | |
4453 names_h->obj_at_put(1, name1()); | |
4454 names_h->obj_at_put(2, name2()); | |
4455 break; | |
4456 } | |
4457 case JAVA_THREAD_STATE_TERMINATED : { | |
4458 assert(values_h->length() == 1 && | |
4459 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4460 "Invalid threadStatus value"); | |
1142 | 4461 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4462 1, /* only 1 substate */ |
4463 CHECK_NULL); | |
4464 names_h = objArrayHandle(THREAD, r); | |
4465 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4466 names_h->obj_at_put(0, name()); | |
4467 break; | |
4468 } | |
4469 default: | |
4470 // Unknown state - probably incompatible JDK version | |
4471 return NULL; | |
4472 } | |
4473 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4474 } | |
4475 JVM_END | |
4476 | |
4477 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4478 { | |
4479 memset(info, 0, sizeof(info_size)); | |
4480 | |
4481 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4482 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4483 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4484 | |
4485 // when we add a new capability in the jvm_version_info struct, we should also | |
4486 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4487 // counter defined in runtimeService.cpp. | |
4488 info->is_attachable = AttachListener::is_attach_supported(); | |
4489 } | |
4490 JVM_END |