Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 14422:2b8e28fdf503
Merge
author | kvn |
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date | Tue, 05 Nov 2013 17:38:04 -0800 |
parents | bdd155477289 615d83933195 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
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: | |
223 JVMTraceWrapper(const char* format, ...) { | |
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"; | |
380 #else | |
381 const char* compiler_name = ""; | |
382 #endif // compilers | |
383 #endif // TIERED | |
384 | |
385 if (*compiler_name != '\0' && | |
386 (Arguments::mode() != Arguments::_int)) { | |
387 PUTPROP(props, "sun.management.compiler", compiler_name); | |
388 } | |
389 } | |
390 | |
391 return properties; | |
392 JVM_END | |
393 | |
394 | |
395 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
396 | |
397 extern volatile jint vm_created; | |
398 | |
399 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
400 if (vm_created != 0 && (code == 0)) { | |
401 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
402 Universe::run_finalizers_on_exit(); | |
403 } | |
404 before_exit(thread); | |
405 vm_exit(code); | |
406 JVM_END | |
407 | |
408 | |
409 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
410 before_exit(thread); | |
411 vm_exit(code); | |
412 JVM_END | |
413 | |
414 | |
415 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
416 register_on_exit_function(func); | |
417 JVM_END | |
418 | |
419 | |
420 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
421 JVMWrapper("JVM_GC"); | |
422 if (!DisableExplicitGC) { | |
423 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
424 } | |
425 JVM_END | |
426 | |
427 | |
428 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
429 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
430 return Universe::heap()->millis_since_last_gc(); | |
431 JVM_END | |
432 | |
433 | |
434 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
435 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
436 JVM_END | |
437 | |
438 | |
439 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
440 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
441 JVM_END | |
442 | |
443 static inline jlong convert_size_t_to_jlong(size_t val) { | |
444 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
445 NOT_LP64 (return (jlong)val;) | |
446 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
447 } | |
448 | |
449 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
450 JVMWrapper("JVM_TotalMemory"); | |
451 size_t n = Universe::heap()->capacity(); | |
452 return convert_size_t_to_jlong(n); | |
453 JVM_END | |
454 | |
455 | |
456 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
457 JVMWrapper("JVM_FreeMemory"); | |
458 CollectedHeap* ch = Universe::heap(); | |
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459 size_t n; |
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460 { |
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461 MutexLocker x(Heap_lock); |
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462 n = ch->capacity() - ch->used(); |
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463 } |
0 | 464 return convert_size_t_to_jlong(n); |
465 JVM_END | |
466 | |
467 | |
468 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
469 JVMWrapper("JVM_MaxMemory"); | |
470 size_t n = Universe::heap()->max_capacity(); | |
471 return convert_size_t_to_jlong(n); | |
472 JVM_END | |
473 | |
474 | |
475 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
476 JVMWrapper("JVM_ActiveProcessorCount"); | |
477 return os::active_processor_count(); | |
478 JVM_END | |
479 | |
480 | |
481 | |
482 // java.lang.Throwable ////////////////////////////////////////////////////// | |
483 | |
484 | |
485 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
486 JVMWrapper("JVM_FillInStackTrace"); | |
487 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
488 java_lang_Throwable::fill_in_stack_trace(exception); | |
489 JVM_END | |
490 | |
491 | |
492 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
493 JVMWrapper("JVM_GetStackTraceDepth"); | |
494 oop exception = JNIHandles::resolve(throwable); | |
495 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
496 JVM_END | |
497 | |
498 | |
499 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
500 JVMWrapper("JVM_GetStackTraceElement"); | |
501 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
502 oop exception = JNIHandles::resolve(throwable); | |
503 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
504 return JNIHandles::make_local(env, element); | |
505 JVM_END | |
506 | |
507 | |
508 // java.lang.Object /////////////////////////////////////////////// | |
509 | |
510 | |
511 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
512 JVMWrapper("JVM_IHashCode"); | |
513 // as implemented in the classic virtual machine; return 0 if object is NULL | |
514 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
515 JVM_END | |
516 | |
517 | |
518 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
519 JVMWrapper("JVM_MonitorWait"); | |
520 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
521 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
522 if (JvmtiExport::should_post_monitor_wait()) { | |
523 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
524 } | |
525 ObjectSynchronizer::wait(obj, ms, CHECK); | |
526 JVM_END | |
527 | |
528 | |
529 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
530 JVMWrapper("JVM_MonitorNotify"); | |
531 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
532 ObjectSynchronizer::notify(obj, CHECK); | |
533 JVM_END | |
534 | |
535 | |
536 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
537 JVMWrapper("JVM_MonitorNotifyAll"); | |
538 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
539 ObjectSynchronizer::notifyall(obj, CHECK); | |
540 JVM_END | |
541 | |
542 | |
543 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
544 JVMWrapper("JVM_Clone"); | |
545 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
546 const KlassHandle klass (THREAD, obj->klass()); | |
547 JvmtiVMObjectAllocEventCollector oam; | |
548 | |
549 #ifdef ASSERT | |
550 // Just checking that the cloneable flag is set correct | |
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551 if (obj->is_array()) { |
0 | 552 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
553 } else { | |
554 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 555 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 556 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
557 } | |
558 #endif | |
559 | |
560 // Check if class of obj supports the Cloneable interface. | |
561 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
562 if (!klass->is_cloneable()) { | |
563 ResourceMark rm(THREAD); | |
564 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
565 } | |
566 | |
567 // Make shallow object copy | |
568 const int size = obj->size(); | |
569 oop new_obj = NULL; | |
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570 if (obj->is_array()) { |
0 | 571 const int length = ((arrayOop)obj())->length(); |
572 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
573 } else { | |
574 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
575 } | |
576 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
577 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
578 // be suspended in the middle of copying the pointer and end up with parts | |
579 // of two different pointers in the field. Subsequent dereferences will crash. | |
580 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
581 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
582 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
583 // The same is true of StubRoutines::object_copy and the various oop_copy | |
584 // variants, and of the code generated by the inline_native_clone intrinsic. | |
585 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
586 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
587 (size_t)align_object_size(size) / HeapWordsPerLong); | |
588 // Clear the header | |
589 new_obj->init_mark(); | |
590 | |
591 // Store check (mark entire object and let gc sort it out) | |
592 BarrierSet* bs = Universe::heap()->barrier_set(); | |
593 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
594 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
595 | |
596 // Caution: this involves a java upcall, so the clone should be | |
597 // "gc-robust" by this stage. | |
598 if (klass->has_finalizer()) { | |
599 assert(obj->is_instance(), "should be instanceOop"); | |
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600 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 601 } |
602 | |
603 return JNIHandles::make_local(env, oop(new_obj)); | |
604 JVM_END | |
605 | |
606 // java.lang.Compiler //////////////////////////////////////////////////// | |
607 | |
608 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
609 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
610 // functions are all silently ignored unless JVM warnings are printed. | |
611 | |
612 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
613 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
614 JVM_END | |
615 | |
616 | |
617 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
618 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
619 return JNI_FALSE; | |
620 JVM_END | |
621 | |
622 | |
623 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
624 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
625 return JNI_FALSE; | |
626 JVM_END | |
627 | |
628 | |
629 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
630 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
631 return JNI_FALSE; | |
632 JVM_END | |
633 | |
634 | |
635 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
636 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
637 return NULL; | |
638 JVM_END | |
639 | |
640 | |
641 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
642 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
643 JVM_END | |
644 | |
645 | |
646 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
647 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
648 JVM_END | |
649 | |
650 | |
651 | |
652 // Error message support ////////////////////////////////////////////////////// | |
653 | |
654 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
655 JVMWrapper("JVM_GetLastErrorString"); | |
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656 return (jint)os::lasterror(buf, len); |
0 | 657 JVM_END |
658 | |
659 | |
660 // java.io.File /////////////////////////////////////////////////////////////// | |
661 | |
662 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
663 JVMWrapper2("JVM_NativePath (%s)", path); | |
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664 return os::native_path(path); |
0 | 665 JVM_END |
666 | |
667 | |
668 // Misc. class handling /////////////////////////////////////////////////////////// | |
669 | |
670 | |
671 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
672 JVMWrapper("JVM_GetCallerClass"); | |
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673 |
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674 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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675 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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676 // temporarily for existing code to use until a replacement API is defined. |
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677 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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678 Klass* k = thread->security_get_caller_class(depth); |
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679 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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680 } |
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681 |
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682 // Getting the class of the caller frame. |
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683 // |
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684 // The call stack at this point looks something like this: |
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685 // |
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686 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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687 // [1] [ @CallerSensitive API.method ] |
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688 // [.] [ (skipped intermediate frames) ] |
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689 // [n] [ caller ] |
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690 vframeStream vfst(thread); |
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691 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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692 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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693 Method* m = vfst.method(); |
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694 assert(m != NULL, "sanity"); |
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695 switch (n) { |
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696 case 0: |
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697 // This must only be called from Reflection.getCallerClass |
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698 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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699 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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700 } |
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701 // fall-through |
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702 case 1: |
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703 // Frame 0 and 1 must be caller sensitive. |
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704 if (!m->caller_sensitive()) { |
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705 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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706 } |
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707 break; |
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708 default: |
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709 if (!m->is_ignored_by_security_stack_walk()) { |
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710 // We have reached the desired frame; return the holder class. |
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711 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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712 } |
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713 break; |
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714 } |
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715 } |
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716 return NULL; |
0 | 717 JVM_END |
718 | |
719 | |
720 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
721 JVMWrapper("JVM_FindPrimitiveClass"); | |
722 oop mirror = NULL; | |
723 BasicType t = name2type(utf); | |
724 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
725 mirror = Universe::java_mirror(t); | |
726 } | |
727 if (mirror == NULL) { | |
728 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
729 } else { | |
730 return (jclass) JNIHandles::make_local(env, mirror); | |
731 } | |
732 JVM_END | |
733 | |
734 | |
735 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
736 JVMWrapper("JVM_ResolveClass"); | |
737 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
738 JVM_END | |
739 | |
878
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740 |
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741 // Returns a class loaded by the bootstrap class loader; or null |
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742 // if not found. ClassNotFoundException is not thrown. |
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743 // |
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744 // Rationale behind JVM_FindClassFromBootLoader |
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745 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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746 // b> because of (a) java.dll has a direct dependecy on the unexported |
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747 // private symbol "_JVM_FindClassFromClassLoader@20". |
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748 // c> the launcher cannot use the private symbol as it dynamically opens |
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749 // the entry point, so if something changes, the launcher will fail |
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750 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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751 // stable exported interface. |
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752 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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753 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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754 // JVM_FindClassFromClassLoader and will not be backward compatible |
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755 // with older JDKs. |
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756 // Thus a public/stable exported entry point is the right solution, |
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757 // public here means public in linker semantics, and is exported only |
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758 // to the JDK, and is not intended to be a public API. |
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759 |
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760 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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761 const char* name)) |
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762 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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763 |
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764 // Java libraries should ensure that name is never null... |
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765 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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766 // It's impossible to create this class; the name cannot fit |
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767 // into the constant pool. |
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768 return NULL; |
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769 } |
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770 |
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771 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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772 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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773 if (k == NULL) { |
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774 return NULL; |
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775 } |
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776 |
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777 if (TraceClassResolution) { |
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778 trace_class_resolution(k); |
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779 } |
6983 | 780 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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781 JVM_END |
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782 |
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783 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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784 jboolean init, jobject loader, |
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785 jboolean throwError)) |
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786 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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787 throwError ? "error" : "exception"); |
388 | 788 // Java libraries should ensure that name is never null... |
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789 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 790 // It's impossible to create this class; the name cannot fit |
791 // into the constant pool. | |
792 if (throwError) { | |
793 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
794 } else { | |
795 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
796 } | |
797 } | |
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798 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 799 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
800 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
801 Handle(), throwError, THREAD); | |
802 | |
803 if (TraceClassResolution && result != NULL) { | |
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804 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 805 } |
806 return result; | |
0 | 807 JVM_END |
808 | |
809 | |
810 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
811 jboolean init, jclass from)) | |
812 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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813 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 814 // It's impossible to create this class; the name cannot fit |
815 // into the constant pool. | |
816 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
817 } | |
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818 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 819 oop from_class_oop = JNIHandles::resolve(from); |
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820 Klass* from_class = (from_class_oop == NULL) |
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821 ? (Klass*)NULL |
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822 : java_lang_Class::as_Klass(from_class_oop); |
0 | 823 oop class_loader = NULL; |
824 oop protection_domain = NULL; | |
825 if (from_class != NULL) { | |
6983 | 826 class_loader = from_class->class_loader(); |
827 protection_domain = from_class->protection_domain(); | |
0 | 828 } |
829 Handle h_loader(THREAD, class_loader); | |
830 Handle h_prot (THREAD, protection_domain); | |
831 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
832 h_prot, true, thread); | |
833 | |
834 if (TraceClassResolution && result != NULL) { | |
835 // this function is generally only used for class loading during verification. | |
836 ResourceMark rm; | |
837 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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838 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 839 const char * from_name = from_class->external_name(); |
0 | 840 |
841 oop mirror = JNIHandles::resolve_non_null(result); | |
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842 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 843 const char * to = to_class->external_name(); |
0 | 844 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
845 } | |
846 | |
847 return result; | |
848 JVM_END | |
849 | |
850 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
851 if (loader.is_null()) { | |
852 return; | |
853 } | |
854 | |
855 // check whether the current caller thread holds the lock or not. | |
856 // If not, increment the corresponding counter | |
857 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
858 ObjectSynchronizer::owner_self) { | |
859 counter->inc(); | |
860 } | |
861 } | |
862 | |
863 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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864 // and JVM_DefineClassWithSourceCond() |
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865 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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866 jobject loader, const jbyte *buf, |
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867 jsize len, jobject pd, const char *source, |
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868 jboolean verify, TRAPS) { |
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869 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 870 |
875
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871 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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872 JavaThread* jt = (JavaThread*) THREAD; |
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873 |
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874 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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875 ClassLoader::perf_define_appclass_selftime(), |
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876 ClassLoader::perf_define_appclasses(), |
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877 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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878 jt->get_thread_stat()->perf_timers_addr(), |
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879 PerfClassTraceTime::DEFINE_CLASS); |
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880 |
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881 if (UsePerfData) { |
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882 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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883 } |
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884 |
0 | 885 // Since exceptions can be thrown, class initialization can take place |
886 // if name is NULL no check for class name in .class stream has to be made. | |
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887 TempNewSymbol class_name = NULL; |
0 | 888 if (name != NULL) { |
889 const int str_len = (int)strlen(name); | |
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890 if (str_len > Symbol::max_length()) { |
0 | 891 // It's impossible to create this class; the name cannot fit |
892 // into the constant pool. | |
893 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
894 } | |
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895 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 896 } |
897 | |
898 ResourceMark rm(THREAD); | |
899 ClassFileStream st((u1*) buf, len, (char *)source); | |
900 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
901 if (UsePerfData) { | |
902 is_lock_held_by_thread(class_loader, | |
903 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
904 THREAD); | |
905 } | |
906 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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907 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 908 protection_domain, &st, |
973
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909 verify != 0, |
0 | 910 CHECK_NULL); |
911 | |
912 if (TraceClassResolution && k != NULL) { | |
913 trace_class_resolution(k); | |
914 } | |
915 | |
6983 | 916 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 917 } |
918 | |
919 | |
920 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
921 JVMWrapper2("JVM_DefineClass %s", name); | |
922 | |
973
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923 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 924 JVM_END |
925 | |
926 | |
927 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
928 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
929 | |
973
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930 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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931 JVM_END |
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932 |
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933 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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934 jobject loader, const jbyte *buf, |
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935 jsize len, jobject pd, |
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936 const char *source, jboolean verify)) |
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937 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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938 |
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939 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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940 JVM_END |
0 | 941 |
942 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
943 JVMWrapper("JVM_FindLoadedClass"); | |
944 ResourceMark rm(THREAD); | |
945 | |
946 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
947 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
948 | |
949 const char* str = java_lang_String::as_utf8_string(string()); | |
950 // Sanity check, don't expect null | |
951 if (str == NULL) return NULL; | |
952 | |
953 const int str_len = (int)strlen(str); | |
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954 if (str_len > Symbol::max_length()) { |
0 | 955 // It's impossible to create this class; the name cannot fit |
956 // into the constant pool. | |
957 return NULL; | |
958 } | |
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959 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 960 |
961 // Security Note: | |
962 // The Java level wrapper will perform the necessary security check allowing | |
963 // us to pass the NULL as the initiating class loader. | |
964 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
965 if (UsePerfData) { | |
966 is_lock_held_by_thread(h_loader, | |
967 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
968 THREAD); | |
969 } | |
970 | |
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971 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 972 h_loader, |
973 Handle(), | |
974 CHECK_NULL); | |
975 | |
976 return (k == NULL) ? NULL : | |
6983 | 977 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 978 JVM_END |
979 | |
980 | |
981 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
982 | |
983 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
984 assert (cls != NULL, "illegal class"); | |
985 JVMWrapper("JVM_GetClassName"); | |
986 JvmtiVMObjectAllocEventCollector oam; | |
987 ResourceMark rm(THREAD); | |
988 const char* name; | |
989 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
990 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
991 } else { | |
992 // Consider caching interned string in Klass | |
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993 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 994 assert(k->is_klass(), "just checking"); |
6983 | 995 name = k->external_name(); |
0 | 996 } |
997 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
998 return (jstring) JNIHandles::make_local(env, result); | |
999 JVM_END | |
1000 | |
1001 | |
1002 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1003 JVMWrapper("JVM_GetClassInterfaces"); | |
1004 JvmtiVMObjectAllocEventCollector oam; | |
1005 oop mirror = JNIHandles::resolve_non_null(cls); | |
1006 | |
1007 // Special handling for primitive objects | |
1008 if (java_lang_Class::is_primitive(mirror)) { | |
1009 // Primitive objects does not have any interfaces | |
1142 | 1010 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1011 return (jobjectArray) JNIHandles::make_local(env, r); |
1012 } | |
1013 | |
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1014 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1015 // Figure size of result array |
1016 int size; | |
1017 if (klass->oop_is_instance()) { | |
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1018 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1019 } else { |
1020 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1021 size = 2; | |
1022 } | |
1023 | |
1024 // Allocate result array | |
1142 | 1025 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1026 objArrayHandle result (THREAD, r); |
1027 // Fill in result | |
1028 if (klass->oop_is_instance()) { | |
1029 // Regular instance klass, fill in all local interfaces | |
1030 for (int index = 0; index < size; index++) { | |
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1031 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1032 result->obj_at_put(index, k->java_mirror()); |
0 | 1033 } |
1034 } else { | |
1035 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1036 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1037 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1038 } |
1039 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1040 JVM_END | |
1041 | |
1042 | |
1043 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1044 JVMWrapper("JVM_GetClassLoader"); | |
1045 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1046 return NULL; | |
1047 } | |
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1048 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1049 oop loader = k->class_loader(); |
0 | 1050 return JNIHandles::make_local(env, loader); |
1051 JVM_END | |
1052 | |
1053 | |
1054 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1055 JVMWrapper("JVM_IsInterface"); | |
1056 oop mirror = JNIHandles::resolve_non_null(cls); | |
1057 if (java_lang_Class::is_primitive(mirror)) { | |
1058 return JNI_FALSE; | |
1059 } | |
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1060 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1061 jboolean result = k->is_interface(); |
1062 assert(!result || k->oop_is_instance(), | |
0 | 1063 "all interfaces are instance types"); |
1064 // The compiler intrinsic for isInterface tests the | |
1065 // Klass::_access_flags bits in the same way. | |
1066 return result; | |
1067 JVM_END | |
1068 | |
1069 | |
1070 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1071 JVMWrapper("JVM_GetClassSigners"); | |
1072 JvmtiVMObjectAllocEventCollector oam; | |
1073 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1074 // There are no signers for primitive types | |
1075 return NULL; | |
1076 } | |
1077 | |
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1078 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1079 |
1080 // If there are no signers set in the class, or if the class | |
1081 // is an array, return NULL. | |
1082 if (signers == NULL) return NULL; | |
1083 | |
1084 // copy of the signers array | |
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1085 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1086 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1087 for (int index = 0; index < signers->length(); index++) { | |
1088 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1089 } | |
1090 | |
1091 // return the copy | |
1092 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1093 JVM_END | |
1094 | |
1095 | |
1096 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1097 JVMWrapper("JVM_SetClassSigners"); | |
1098 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1099 // This call is ignored for primitive types and arrays. | |
1100 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1101 // be called with an array. Only the bootstrap loader creates arrays. | |
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1102 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1103 if (k->oop_is_instance()) { |
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1104 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1105 } |
1106 } | |
1107 JVM_END | |
1108 | |
1109 | |
1110 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1111 JVMWrapper("JVM_GetProtectionDomain"); | |
1112 if (JNIHandles::resolve(cls) == NULL) { | |
1113 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1114 } | |
1115 | |
1116 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1117 // Primitive types does not have a protection domain. | |
1118 return NULL; | |
1119 } | |
1120 | |
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1121 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1122 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1123 JVM_END |
1124 | |
1125 | |
11010 | 1126 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1127 // If there is a security manager and protection domain, check the access | |
1128 // in the protection domain, otherwise it is authorized. | |
1129 if (java_lang_System::has_security_manager()) { | |
1130 | |
1131 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1132 // this context to revert to older behavior. | |
1133 // In this case the isAuthorized field in AccessControlContext is also not | |
1134 // present. | |
1135 if (Universe::protection_domain_implies_method() == NULL) { | |
1136 return true; | |
1137 } | |
1138 | |
1139 // Whitelist certain access control contexts | |
1140 if (java_security_AccessControlContext::is_authorized(context)) { | |
1141 return true; | |
1142 } | |
1143 | |
1144 oop prot = klass->protection_domain(); | |
1145 if (prot != NULL) { | |
1146 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1147 // in the new wrapper. | |
1148 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1149 Handle h_prot(THREAD, prot); | |
1150 JavaValue result(T_BOOLEAN); | |
1151 JavaCallArguments args(h_prot); | |
1152 JavaCalls::call(&result, m, &args, CHECK_false); | |
1153 return (result.get_jboolean() != 0); | |
1154 } | |
1155 } | |
1156 return true; | |
1157 } | |
1158 | |
1159 // Create an AccessControlContext with a protection domain with null codesource | |
1160 // and null permissions - which gives no permissions. | |
1161 oop create_dummy_access_control_context(TRAPS) { | |
1162 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1163 // new ProtectionDomain(null,null); | |
1164 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1165 Handle null_pd(THREAD, null_protection_domain); | |
1166 | |
1167 // new ProtectionDomain[] {pd}; | |
1168 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1169 context->obj_at_put(0, null_pd()); | |
1170 | |
1171 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1172 objArrayHandle h_context(THREAD, context); | |
1173 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1174 return result; | |
1175 } | |
0 | 1176 |
1177 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1178 JVMWrapper("JVM_DoPrivileged"); | |
1179 | |
1180 if (action == NULL) { | |
1181 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1182 } | |
1183 | |
11010 | 1184 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1185 vframeStream vfst(thread); | |
1186 vfst.security_get_caller_frame(1); | |
1187 | |
1188 if (vfst.at_end()) { | |
1189 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1190 } | |
1191 | |
1192 Method* method = vfst.method(); | |
1193 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1194 | |
1195 // Check that action object understands "Object run()" | |
1196 Handle h_context; | |
1197 if (context != NULL) { | |
1198 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1199 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1200 if (!authorized) { | |
1201 // Create an unprivileged access control object and call it's run function | |
1202 // instead. | |
1203 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1204 h_context = Handle(THREAD, noprivs); | |
1205 } | |
1206 } | |
0 | 1207 |
1208 // Check that action object understands "Object run()" | |
1209 Handle object (THREAD, JNIHandles::resolve(action)); | |
1210 | |
1211 // get run() method | |
6983 | 1212 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1213 vmSymbols::run_method_name(), |
1214 vmSymbols::void_object_signature()); | |
1215 methodHandle m (THREAD, m_oop); | |
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1216 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1217 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1218 } | |
1219 | |
11010 | 1220 // Stack allocated list of privileged stack elements |
1221 PrivilegedElement pi; | |
0 | 1222 if (!vfst.at_end()) { |
11010 | 1223 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1224 thread->set_privileged_stack_top(&pi); |
1225 } | |
1226 | |
1227 | |
1228 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1229 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1230 Handle pending_exception; | |
1231 JavaValue result(T_OBJECT); | |
1232 JavaCallArguments args(object); | |
1233 JavaCalls::call(&result, m, &args, THREAD); | |
1234 | |
1235 // done with action, remove ourselves from the list | |
1236 if (!vfst.at_end()) { | |
1237 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1238 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1239 } | |
1240 | |
1241 if (HAS_PENDING_EXCEPTION) { | |
1242 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1243 CLEAR_PENDING_EXCEPTION; | |
1244 | |
1142 | 1245 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1246 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1247 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1248 JavaCallArguments args(pending_exception); | |
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1249 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1250 vmSymbols::exception_void_signature(), |
0 | 1251 &args); |
1252 } | |
1253 } | |
1254 | |
1255 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1256 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1257 JVM_END | |
1258 | |
1259 | |
1260 // Returns the inherited_access_control_context field of the running thread. | |
1261 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1262 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1263 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1264 return JNIHandles::make_local(env, result); | |
1265 JVM_END | |
1266 | |
1267 class RegisterArrayForGC { | |
1268 private: | |
1269 JavaThread *_thread; | |
1270 public: | |
1271 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1272 _thread = thread; | |
1273 _thread->register_array_for_gc(array); | |
1274 } | |
1275 | |
1276 ~RegisterArrayForGC() { | |
1277 _thread->register_array_for_gc(NULL); | |
1278 } | |
1279 }; | |
1280 | |
1281 | |
1282 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1283 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1284 if (!UsePrivilegedStack) return NULL; | |
1285 | |
1286 ResourceMark rm(THREAD); | |
1287 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1288 JvmtiVMObjectAllocEventCollector oam; | |
1289 | |
1290 // count the protection domains on the execution stack. We collapse | |
1291 // duplicate consecutive protection domains into a single one, as | |
1292 // well as stopping when we hit a privileged frame. | |
1293 | |
1294 // Use vframeStream to iterate through Java frames | |
1295 vframeStream vfst(thread); | |
1296 | |
1297 oop previous_protection_domain = NULL; | |
1298 Handle privileged_context(thread, NULL); | |
1299 bool is_privileged = false; | |
1300 oop protection_domain = NULL; | |
1301 | |
1302 for(; !vfst.at_end(); vfst.next()) { | |
1303 // get method of frame | |
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1304 Method* method = vfst.method(); |
0 | 1305 intptr_t* frame_id = vfst.frame_id(); |
1306 | |
1307 // check the privileged frames to see if we have a match | |
1308 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1309 // this frame is privileged | |
1310 is_privileged = true; | |
1311 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1312 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1313 } else { | |
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1314 protection_domain = method->method_holder()->protection_domain(); |
0 | 1315 } |
1316 | |
1317 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1318 local_array->push(protection_domain); | |
1319 previous_protection_domain = protection_domain; | |
1320 } | |
1321 | |
1322 if (is_privileged) break; | |
1323 } | |
1324 | |
1325 | |
1326 // either all the domains on the stack were system domains, or | |
1327 // we had a privileged system domain | |
1328 if (local_array->is_empty()) { | |
1329 if (is_privileged && privileged_context.is_null()) return NULL; | |
1330 | |
1331 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1332 return JNIHandles::make_local(env, result); | |
1333 } | |
1334 | |
1335 // the resource area must be registered in case of a gc | |
1336 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1337 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1338 local_array->length(), CHECK_NULL); |
1339 objArrayHandle h_context(thread, context); | |
1340 for (int index = 0; index < local_array->length(); index++) { | |
1341 h_context->obj_at_put(index, local_array->at(index)); | |
1342 } | |
1343 | |
1344 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1345 | |
1346 return JNIHandles::make_local(env, result); | |
1347 JVM_END | |
1348 | |
1349 | |
1350 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1351 JVMWrapper("JVM_IsArrayClass"); | |
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1352 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1353 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1354 JVM_END |
1355 | |
1356 | |
1357 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1358 JVMWrapper("JVM_IsPrimitiveClass"); | |
1359 oop mirror = JNIHandles::resolve_non_null(cls); | |
1360 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1361 JVM_END | |
1362 | |
1363 | |
1364 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1365 JVMWrapper("JVM_GetComponentType"); | |
1366 oop mirror = JNIHandles::resolve_non_null(cls); | |
1367 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1368 return (jclass) JNIHandles::make_local(env, result); | |
1369 JVM_END | |
1370 | |
1371 | |
1372 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1373 JVMWrapper("JVM_GetClassModifiers"); | |
1374 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1375 // Primitive type | |
1376 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1377 } | |
1378 | |
6983 | 1379 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1380 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1381 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1382 return k->modifier_flags(); | |
1383 JVM_END | |
1384 | |
1385 | |
1386 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1387 | |
1388 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1389 JvmtiVMObjectAllocEventCollector oam; | |
1390 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1391 // of an InstanceKlass |
0 | 1392 |
1393 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1394 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1395 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1396 return (jobjectArray)JNIHandles::make_local(env, result); |
1397 } | |
1398 | |
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1399 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1400 InnerClassesIterator iter(k); |
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1401 |
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1402 if (iter.length() == 0) { |
0 | 1403 // Neither an inner nor outer class |
1142 | 1404 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1405 return (jobjectArray)JNIHandles::make_local(env, result); |
1406 } | |
1407 | |
1408 // find inner class info | |
1409 constantPoolHandle cp(thread, k->constants()); | |
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1410 int length = iter.length(); |
0 | 1411 |
1412 // Allocate temp. result array | |
1142 | 1413 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1414 objArrayHandle result (THREAD, r); |
1415 int members = 0; | |
1416 | |
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1417 for (; !iter.done(); iter.next()) { |
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1418 int ioff = iter.inner_class_info_index(); |
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1419 int ooff = iter.outer_class_info_index(); |
0 | 1420 |
1421 if (ioff != 0 && ooff != 0) { | |
1422 // Check to see if the name matches the class we're looking for | |
1423 // before attempting to find the class. | |
1424 if (cp->klass_name_at_matches(k, ooff)) { | |
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1425 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1426 if (outer_klass == k()) { |
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1427 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1428 instanceKlassHandle inner_klass (THREAD, ik); |
1429 | |
1430 // Throws an exception if outer klass has not declared k as | |
1431 // an inner klass | |
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1432 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1433 |
1434 result->obj_at_put(members, inner_klass->java_mirror()); | |
1435 members++; | |
1436 } | |
1437 } | |
1438 } | |
1439 } | |
1440 | |
1441 if (members != length) { | |
1442 // Return array of right length | |
1142 | 1443 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1444 for(int i = 0; i < members; i++) { |
1445 res->obj_at_put(i, result->obj_at(i)); | |
1446 } | |
1447 return (jobjectArray)JNIHandles::make_local(env, res); | |
1448 } | |
1449 | |
1450 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1451 JVM_END | |
1452 | |
1453 | |
1454 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1455 { |
0 | 1456 // ofClass is a reference to a java_lang_Class object. |
1457 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1458 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1459 return NULL; |
1460 } | |
1461 | |
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1462 bool inner_is_member = false; |
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1463 Klass* outer_klass |
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1464 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1465 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
665
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1466 if (outer_klass == NULL) return NULL; // already a top-level class |
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1467 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1468 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1469 } |
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1470 JVM_END |
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1471 |
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1472 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1473 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1474 bool* inner_is_member, |
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1475 TRAPS) { |
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1476 Thread* thread = THREAD; |
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1477 InnerClassesIterator iter(k); |
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1478 if (iter.length() == 0) { |
0 | 1479 // No inner class info => no declaring class |
1480 return NULL; | |
1481 } | |
1482 | |
1483 constantPoolHandle i_cp(thread, k->constants()); | |
1484 | |
1485 bool found = false; | |
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1486 Klass* ok; |
0 | 1487 instanceKlassHandle outer_klass; |
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1488 *inner_is_member = false; |
0 | 1489 |
1490 // Find inner_klass attribute | |
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1491 for (; !iter.done() && !found; iter.next()) { |
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1492 int ioff = iter.inner_class_info_index(); |
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1493 int ooff = iter.outer_class_info_index(); |
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1494 int noff = iter.inner_name_index(); |
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1495 if (ioff != 0) { |
0 | 1496 // Check to see if the name matches the class we're looking for |
1497 // before attempting to find the class. | |
1498 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1499 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1500 found = (k() == inner_klass); |
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1501 if (found && ooff != 0) { |
0 | 1502 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1503 outer_klass = instanceKlassHandle(thread, ok); | |
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1504 *inner_is_member = true; |
0 | 1505 } |
1506 } | |
1507 } | |
1508 } | |
1509 | |
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1510 if (found && outer_klass.is_null()) { |
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1511 // It may be anonymous; try for that. |
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1512 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1513 if (encl_method_class_idx != 0) { |
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1514 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1515 outer_klass = instanceKlassHandle(thread, ok); |
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1516 *inner_is_member = false; |
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1517 } |
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1518 } |
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1519 |
0 | 1520 // If no inner class attribute found for this class. |
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1521 if (outer_klass.is_null()) return NULL; |
0 | 1522 |
1523 // Throws an exception if outer klass has not declared k as an inner klass | |
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1524 // We need evidence that each klass knows about the other, or else |
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1525 // the system could allow a spoof of an inner class to gain access rights. |
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1526 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1527 return outer_klass(); |
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1528 } |
0 | 1529 |
1530 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1531 assert (cls != NULL, "illegal class"); | |
1532 JVMWrapper("JVM_GetClassSignature"); | |
1533 JvmtiVMObjectAllocEventCollector oam; | |
1534 ResourceMark rm(THREAD); | |
1535 // Return null for arrays and primatives | |
1536 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1537 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1538 if (k->oop_is_instance()) { |
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1539 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1540 if (sym == NULL) return NULL; |
0 | 1541 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1542 return (jstring) JNIHandles::make_local(env, str()); | |
1543 } | |
1544 } | |
1545 return NULL; | |
1546 JVM_END | |
1547 | |
1548 | |
1549 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1550 assert (cls != NULL, "illegal class"); | |
1551 JVMWrapper("JVM_GetClassAnnotations"); | |
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1552 |
0 | 1553 // Return null for arrays and primitives |
1554 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1555 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1556 if (k->oop_is_instance()) { |
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1557 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1558 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1559 } |
1560 } | |
1561 return NULL; | |
1562 JVM_END | |
1563 | |
1564 | |
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1565 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1566 // some of this code was adapted from from jni_FromReflectedField |
1567 | |
1568 oop reflected = JNIHandles::resolve_non_null(field); | |
1569 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1570 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1571 int slot = java_lang_reflect_Field::slot(reflected); |
1572 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1573 | |
1574 KlassHandle kh(THREAD, k); | |
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1575 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1576 |
1577 if (modifiers & JVM_ACC_STATIC) { | |
1578 // for static fields we only look in the current class | |
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1579 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1580 assert(false, "cannot find static field"); |
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1581 return false; |
0 | 1582 } |
1583 } else { | |
1584 // for instance fields we start with the current class and work | |
1585 // our way up through the superclass chain | |
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1586 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1587 assert(false, "cannot find instance field"); |
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1588 return false; |
0 | 1589 } |
1590 } | |
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1591 return true; |
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1592 } |
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1593 |
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1594 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1595 // field is a handle to a java.lang.reflect.Field object |
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1596 assert(field != NULL, "illegal field"); |
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1597 JVMWrapper("JVM_GetFieldAnnotations"); |
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1598 |
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1599 fieldDescriptor fd; |
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1600 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1601 if (!gotFd) { |
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1602 return NULL; |
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|
1603 } |
0 | 1604 |
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1605 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1606 JVM_END |
1607 | |
1608 | |
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1609 static Method* jvm_get_method_common(jobject method) { |
0 | 1610 // some of this code was adapted from from jni_FromReflectedMethod |
1611 | |
1612 oop reflected = JNIHandles::resolve_non_null(method); | |
1613 oop mirror = NULL; | |
1614 int slot = 0; | |
1615 | |
1142 | 1616 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1617 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1618 slot = java_lang_reflect_Constructor::slot(reflected); | |
1619 } else { | |
1142 | 1620 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1621 "wrong type"); |
1622 mirror = java_lang_reflect_Method::clazz(reflected); | |
1623 slot = java_lang_reflect_Method::slot(reflected); | |
1624 } | |
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1625 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1626 |
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1627 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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1628 assert(m != NULL, "cannot find method"); |
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1629 return m; // caller has to deal with NULL in product mode |
0 | 1630 } |
1631 | |
1632 | |
1633 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1634 JVMWrapper("JVM_GetMethodAnnotations"); | |
1635 | |
1636 // method is a handle to a java.lang.reflect.Method object | |
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1637 Method* m = jvm_get_method_common(method); |
8818
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1638 if (m == NULL) { |
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1639 return NULL; |
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|
1640 } |
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1641 |
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1642 return (jbyteArray) JNIHandles::make_local(env, |
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1643 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1644 JVM_END |
1645 | |
1646 | |
1647 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1648 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1649 | |
1650 // method is a handle to a java.lang.reflect.Method object | |
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1651 Method* m = jvm_get_method_common(method); |
8818
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1652 if (m == NULL) { |
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1653 return NULL; |
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|
1654 } |
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1655 |
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1656 return (jbyteArray) JNIHandles::make_local(env, |
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1657 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1658 JVM_END |
1659 | |
1660 | |
1661 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1662 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1663 | |
1664 // method is a handle to a java.lang.reflect.Method object | |
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1665 Method* m = jvm_get_method_common(method); |
8818
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1666 if (m == NULL) { |
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|
1667 return NULL; |
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|
1668 } |
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1669 |
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1670 return (jbyteArray) JNIHandles::make_local(env, |
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1671 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1672 JVM_END |
1673 | |
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1674 /* Type use annotations support (JDK 1.8) */ |
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1675 |
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1676 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1677 assert (cls != NULL, "illegal class"); |
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1678 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1679 ResourceMark rm(THREAD); |
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|
1680 // Return null for arrays and primitives |
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1681 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1682 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1683 if (k->oop_is_instance()) { |
8031 | 1684 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1685 if (type_annotations != NULL) { |
8031 | 1686 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1687 return (jbyteArray) JNIHandles::make_local(env, a); |
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1688 } |
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1689 } |
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|
1690 } |
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|
1691 return NULL; |
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|
1692 JVM_END |
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1693 |
8818
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1694 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1695 assert (method != NULL, "illegal method"); |
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|
1696 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1697 |
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|
1698 // method is a handle to a java.lang.reflect.Method object |
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1699 Method* m = jvm_get_method_common(method); |
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1700 if (m == NULL) { |
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|
1701 return NULL; |
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|
1702 } |
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|
1703 |
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|
1704 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1705 if (type_annotations != NULL) { |
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|
1706 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1707 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1708 } |
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|
1709 |
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|
1710 return NULL; |
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|
1711 JVM_END |
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|
1712 |
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|
1713 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1714 assert (field != NULL, "illegal field"); |
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|
1715 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1716 |
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|
1717 fieldDescriptor fd; |
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|
1718 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1719 if (!gotFd) { |
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|
1720 return NULL; |
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|
1721 } |
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|
1722 |
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|
1723 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1724 JVM_END |
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|
1725 |
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1726 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1727 if (!cp->is_within_bounds(index)) { |
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1728 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1729 } |
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1730 } |
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1731 |
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1732 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1733 { |
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1734 JVMWrapper("JVM_GetMethodParameters"); |
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1735 // method is a handle to a java.lang.reflect.Method object |
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1736 Method* method_ptr = jvm_get_method_common(method); |
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1737 methodHandle mh (THREAD, method_ptr); |
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1738 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1739 const int num_params = mh->method_parameters_length(); |
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1740 |
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1741 if (0 != num_params) { |
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1742 // make sure all the symbols are properly formatted |
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1743 for (int i = 0; i < num_params; i++) { |
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1744 MethodParametersElement* params = mh->method_parameters_start(); |
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1745 int index = params[i].name_cp_index; |
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1746 bounds_check(mh->constants(), index, CHECK_NULL); |
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1747 |
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1748 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1749 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1750 "Wrong type at constant pool index"); |
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|
1751 } |
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1752 |
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1753 } |
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1754 |
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|
1755 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1756 objArrayHandle result (THREAD, result_oop); |
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1757 |
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1758 for (int i = 0; i < num_params; i++) { |
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1759 MethodParametersElement* params = mh->method_parameters_start(); |
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1760 // For a 0 index, give a NULL symbol |
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1761 Symbol* sym = 0 != params[i].name_cp_index ? |
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1762 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1763 int flags = params[i].flags; |
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1764 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1765 flags, CHECK_NULL); |
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1766 result->obj_at_put(i, param); |
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1767 } |
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1768 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1769 } else { |
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1770 return (jobjectArray)NULL; |
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1771 } |
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1772 } |
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1773 JVM_END |
0 | 1774 |
1775 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1776 | |
1777 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1778 { | |
1779 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1780 JvmtiVMObjectAllocEventCollector oam; | |
1781 | |
1782 // Exclude primitive types and array types | |
1783 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1784 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1785 // Return empty array |
1142 | 1786 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1787 return (jobjectArray) JNIHandles::make_local(env, res); |
1788 } | |
1789 | |
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1790 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1791 constantPoolHandle cp(THREAD, k->constants()); |
1792 | |
1793 // Ensure class is linked | |
1794 k->link_class(CHECK_NULL); | |
1795 | |
1796 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1797 bool skip_backtrace = false; | |
1798 | |
1799 // Allocate result | |
1800 int num_fields; | |
1801 | |
1802 if (publicOnly) { | |
1803 num_fields = 0; | |
3938 | 1804 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1805 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1806 } |
1807 } else { | |
3938 | 1808 num_fields = k->java_fields_count(); |
0 | 1809 |
1142 | 1810 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1811 num_fields--; |
1812 skip_backtrace = true; | |
1813 } | |
1814 } | |
1815 | |
1142 | 1816 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1817 objArrayHandle result (THREAD, r); |
1818 | |
1819 int out_idx = 0; | |
1820 fieldDescriptor fd; | |
3938 | 1821 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1822 if (skip_backtrace) { |
1823 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1824 int offset = fs.offset(); |
0 | 1825 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1826 } | |
1827 | |
3938 | 1828 if (!publicOnly || fs.access_flags().is_public()) { |
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1829 fd.reinitialize(k(), fs.index()); |
0 | 1830 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1831 result->obj_at_put(out_idx, field); | |
1832 ++out_idx; | |
1833 } | |
1834 } | |
1835 assert(out_idx == num_fields, "just checking"); | |
1836 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1837 } | |
1838 JVM_END | |
1839 | |
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1840 static bool select_method(methodHandle method, bool want_constructor) { |
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1841 if (want_constructor) { |
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1842 return (method->is_initializer() && !method->is_static()); |
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1843 } else { |
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1844 return (!method->is_initializer() && !method->is_overpass()); |
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1845 } |
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1846 } |
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1847 |
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1848 static jobjectArray get_class_declared_methods_helper( |
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1849 JNIEnv *env, |
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1850 jclass ofClass, jboolean publicOnly, |
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1851 bool want_constructor, |
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1852 Klass* klass, TRAPS) { |
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1853 |
0 | 1854 JvmtiVMObjectAllocEventCollector oam; |
1855 | |
1856 // Exclude primitive types and array types | |
1857 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1858 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1859 // Return empty array |
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1860 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1861 return (jobjectArray) JNIHandles::make_local(env, res); |
1862 } | |
1863 | |
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1864 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1865 |
1866 // Ensure class is linked | |
1867 k->link_class(CHECK_NULL); | |
1868 | |
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1869 Array<Method*>* methods = k->methods(); |
0 | 1870 int methods_length = methods->length(); |
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1871 |
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1872 // Save original method_idnum in case of redefinition, which can change |
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1873 // the idnum of obsolete methods. The new method will have the same idnum |
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1874 // but if we refresh the methods array, the counts will be wrong. |
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1875 ResourceMark rm(THREAD); |
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1876 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1877 int num_methods = 0; |
1878 | |
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1879 for (int i = 0; i < methods_length; i++) { |
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1880 methodHandle method(THREAD, methods->at(i)); |
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1881 if (select_method(method, want_constructor)) { |
0 | 1882 if (!publicOnly || method->is_public()) { |
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1883 idnums->push(method->method_idnum()); |
0 | 1884 ++num_methods; |
1885 } | |
1886 } | |
1887 } | |
1888 | |
1889 // Allocate result | |
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1890 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1891 objArrayHandle result (THREAD, r); |
1892 | |
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1893 // Now just put the methods that we selected above, but go by their idnum |
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1894 // in case of redefinition. The methods can be redefined at any safepoint, |
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1895 // so above when allocating the oop array and below when creating reflect |
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1896 // objects. |
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1897 for (int i = 0; i < num_methods; i++) { |
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1898 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1899 if (method.is_null()) { |
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1900 // Method may have been deleted and seems this API can handle null |
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1901 // Otherwise should probably put a method that throws NSME |
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1902 result->obj_at_put(i, NULL); |
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1903 } else { |
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1904 oop m; |
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1905 if (want_constructor) { |
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1906 m = Reflection::new_constructor(method, CHECK_NULL); |
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1907 } else { |
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1908 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1909 } |
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1910 result->obj_at_put(i, m); |
0 | 1911 } |
1912 } | |
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1913 |
0 | 1914 return (jobjectArray) JNIHandles::make_local(env, result()); |
1915 } | |
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1916 |
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1917 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1918 { |
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1919 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1920 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1921 /*want_constructor*/ false, |
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1922 SystemDictionary::reflect_Method_klass(), THREAD); |
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1923 } |
0 | 1924 JVM_END |
1925 | |
1926 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1927 { | |
1928 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1929 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1930 /*want_constructor*/ true, |
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1931 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1932 } |
1933 JVM_END | |
1934 | |
1935 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1936 { | |
1937 JVMWrapper("JVM_GetClassAccessFlags"); | |
1938 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1939 // Primitive type | |
1940 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1941 } | |
1942 | |
6983 | 1943 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1944 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1945 } | |
1946 JVM_END | |
1947 | |
1948 | |
1949 // Constant pool access ////////////////////////////////////////////////////////// | |
1950 | |
1951 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1952 { | |
1953 JVMWrapper("JVM_GetClassConstantPool"); | |
1954 JvmtiVMObjectAllocEventCollector oam; | |
1955 | |
1956 // Return null for primitives and arrays | |
1957 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1958 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1959 if (k->oop_is_instance()) { |
0 | 1960 instanceKlassHandle k_h(THREAD, k); |
1961 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1962 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1963 return JNIHandles::make_local(jcp()); |
1964 } | |
1965 } | |
1966 return NULL; | |
1967 } | |
1968 JVM_END | |
1969 | |
1970 | |
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1971 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1972 { |
1973 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1974 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1975 return cp->length(); |
1976 } | |
1977 JVM_END | |
1978 | |
1979 | |
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1980 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1981 { |
1982 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1983 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1984 bounds_check(cp, index, CHECK_NULL); |
1985 constantTag tag = cp->tag_at(index); | |
1986 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1987 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1988 } | |
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1989 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1990 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1991 } |
1992 JVM_END | |
1993 | |
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1994 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1995 { |
1996 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1997 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1998 bounds_check(cp, index, CHECK_NULL); |
1999 constantTag tag = cp->tag_at(index); | |
2000 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2001 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2002 } | |
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2003 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2004 if (k == NULL) return NULL; |
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2005 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2006 } |
2007 JVM_END | |
2008 | |
2009 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2010 constantTag tag = cp->tag_at(index); | |
2011 if (!tag.is_method() && !tag.is_interface_method()) { | |
2012 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2013 } | |
2014 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2015 Klass* k_o; |
0 | 2016 if (force_resolution) { |
2017 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2018 } else { | |
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2019 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2020 if (k_o == NULL) return NULL; |
2021 } | |
2022 instanceKlassHandle k(THREAD, k_o); | |
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2023 Symbol* name = cp->uncached_name_ref_at(index); |
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2024 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2025 methodHandle m (THREAD, k->find_method(name, sig)); |
2026 if (m.is_null()) { | |
2027 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2028 } | |
2029 oop method; | |
2030 if (!m->is_initializer() || m->is_static()) { | |
2031 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2032 } else { | |
2033 method = Reflection::new_constructor(m, CHECK_NULL); | |
2034 } | |
2035 return JNIHandles::make_local(method); | |
2036 } | |
2037 | |
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2038 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2039 { |
2040 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2041 JvmtiVMObjectAllocEventCollector oam; | |
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2042 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2043 bounds_check(cp, index, CHECK_NULL); |
2044 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2045 return res; | |
2046 } | |
2047 JVM_END | |
2048 | |
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2049 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2050 { |
2051 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2052 JvmtiVMObjectAllocEventCollector oam; | |
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2053 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2054 bounds_check(cp, index, CHECK_NULL); |
2055 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2056 return res; | |
2057 } | |
2058 JVM_END | |
2059 | |
2060 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2061 constantTag tag = cp->tag_at(index); | |
2062 if (!tag.is_field()) { | |
2063 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2064 } | |
2065 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2066 Klass* k_o; |
0 | 2067 if (force_resolution) { |
2068 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2069 } else { | |
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2070 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2071 if (k_o == NULL) return NULL; |
2072 } | |
2073 instanceKlassHandle k(THREAD, k_o); | |
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2074 Symbol* name = cp->uncached_name_ref_at(index); |
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2075 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2076 fieldDescriptor fd; |
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2077 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2078 if (target_klass == NULL) { |
2079 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2080 } | |
2081 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2082 return JNIHandles::make_local(field); | |
2083 } | |
2084 | |
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2085 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2086 { |
2087 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2088 JvmtiVMObjectAllocEventCollector oam; | |
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2089 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2090 bounds_check(cp, index, CHECK_NULL); |
2091 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2092 return res; | |
2093 } | |
2094 JVM_END | |
2095 | |
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2096 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2097 { |
2098 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2099 JvmtiVMObjectAllocEventCollector oam; | |
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2100 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2101 bounds_check(cp, index, CHECK_NULL); |
2102 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2103 return res; | |
2104 } | |
2105 JVM_END | |
2106 | |
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2107 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2108 { |
2109 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2110 JvmtiVMObjectAllocEventCollector oam; | |
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2111 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2112 bounds_check(cp, index, CHECK_NULL); |
2113 constantTag tag = cp->tag_at(index); | |
2114 if (!tag.is_field_or_method()) { | |
2115 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2116 } | |
2117 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2118 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2119 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2120 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2121 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2122 objArrayHandle dest(THREAD, dest_o); |
2123 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2124 dest->obj_at_put(0, str()); | |
2125 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2126 dest->obj_at_put(1, str()); | |
2127 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2128 dest->obj_at_put(2, str()); | |
2129 return (jobjectArray) JNIHandles::make_local(dest()); | |
2130 } | |
2131 JVM_END | |
2132 | |
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2133 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2134 { |
2135 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2136 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2137 bounds_check(cp, index, CHECK_0); |
2138 constantTag tag = cp->tag_at(index); | |
2139 if (!tag.is_int()) { | |
2140 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2141 } | |
2142 return cp->int_at(index); | |
2143 } | |
2144 JVM_END | |
2145 | |
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2146 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2147 { |
2148 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2149 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2150 bounds_check(cp, index, CHECK_(0L)); |
2151 constantTag tag = cp->tag_at(index); | |
2152 if (!tag.is_long()) { | |
2153 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2154 } | |
2155 return cp->long_at(index); | |
2156 } | |
2157 JVM_END | |
2158 | |
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2159 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2160 { |
2161 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2162 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2163 bounds_check(cp, index, CHECK_(0.0f)); |
2164 constantTag tag = cp->tag_at(index); | |
2165 if (!tag.is_float()) { | |
2166 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2167 } | |
2168 return cp->float_at(index); | |
2169 } | |
2170 JVM_END | |
2171 | |
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2172 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2173 { |
2174 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2175 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2176 bounds_check(cp, index, CHECK_(0.0)); |
2177 constantTag tag = cp->tag_at(index); | |
2178 if (!tag.is_double()) { | |
2179 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2180 } | |
2181 return cp->double_at(index); | |
2182 } | |
2183 JVM_END | |
2184 | |
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2185 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2186 { |
2187 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2188 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2189 bounds_check(cp, index, CHECK_NULL); |
2190 constantTag tag = cp->tag_at(index); | |
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2191 if (!tag.is_string()) { |
0 | 2192 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2193 } | |
2194 oop str = cp->string_at(index, CHECK_NULL); | |
2195 return (jstring) JNIHandles::make_local(str); | |
2196 } | |
2197 JVM_END | |
2198 | |
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2199 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2200 { |
2201 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2202 JvmtiVMObjectAllocEventCollector oam; | |
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2203 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2204 bounds_check(cp, index, CHECK_NULL); |
2205 constantTag tag = cp->tag_at(index); | |
2206 if (!tag.is_symbol()) { | |
2207 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2208 } | |
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2209 Symbol* sym = cp->symbol_at(index); |
0 | 2210 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2211 return (jstring) JNIHandles::make_local(str()); | |
2212 } | |
2213 JVM_END | |
2214 | |
2215 | |
2216 // Assertion support. ////////////////////////////////////////////////////////// | |
2217 | |
2218 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2219 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2220 assert(cls != NULL, "bad class"); | |
2221 | |
2222 oop r = JNIHandles::resolve(cls); | |
2223 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2224 if (java_lang_Class::is_primitive(r)) return false; | |
2225 | |
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2226 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2227 assert(k->oop_is_instance(), "must be an instance klass"); |
2228 if (! k->oop_is_instance()) return false; | |
0 | 2229 |
2230 ResourceMark rm(THREAD); | |
6983 | 2231 const char* name = k->name()->as_C_string(); |
2232 bool system_class = k->class_loader() == NULL; | |
0 | 2233 return JavaAssertions::enabled(name, system_class); |
2234 | |
2235 JVM_END | |
2236 | |
2237 | |
2238 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2239 // command-line assertion arguments (i.e., -ea, -da). | |
2240 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2241 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2242 JvmtiVMObjectAllocEventCollector oam; | |
2243 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2244 return JNIHandles::make_local(env, asd); | |
2245 JVM_END | |
2246 | |
2247 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2248 | |
2249 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2250 | |
2251 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2252 // All functions from this section should call the jvmtiThreadSate function: | |
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2253 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2254 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2255 // was invoked in the middle of the class redefinition. |
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2256 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2257 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2258 | |
2259 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2260 JVMWrapper("JVM_GetClassNameUTF"); | |
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2261 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2262 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2263 return k->name()->as_utf8(); |
0 | 2264 JVM_END |
2265 | |
2266 | |
2267 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2268 JVMWrapper("JVM_GetClassCPTypes"); | |
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2269 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2270 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2271 // types will have length zero if this is not an InstanceKlass |
0 | 2272 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2273 if (k->oop_is_instance()) { |
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2274 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2275 for (int index = cp->length() - 1; index >= 0; index--) { |
2276 constantTag tag = cp->tag_at(index); | |
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2277 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2278 } |
2279 } | |
2280 JVM_END | |
2281 | |
2282 | |
2283 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2284 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2285 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2286 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2287 if (!k->oop_is_instance()) |
0 | 2288 return 0; |
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2289 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2290 JVM_END |
2291 | |
2292 | |
2293 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2294 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2295 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2296 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2297 if (!k->oop_is_instance()) |
0 | 2298 return 0; |
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2299 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2300 JVM_END |
2301 | |
2302 | |
2303 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2304 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2305 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2306 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2307 if (!k->oop_is_instance()) |
0 | 2308 return 0; |
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2309 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2310 JVM_END |
2311 | |
2312 | |
2313 // The following methods, used for the verifier, are never called with | |
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2314 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2315 // Typically, these methods are called in a loop with bounds determined |
2316 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2317 // zero for arrays. | |
2318 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2319 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2320 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2321 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2322 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2323 int length = method->checked_exceptions_length(); |
0 | 2324 if (length > 0) { |
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2325 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2326 for (int i = 0; i < length; i++) { |
2327 exceptions[i] = table[i].class_cp_index; | |
2328 } | |
2329 } | |
2330 JVM_END | |
2331 | |
2332 | |
2333 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2334 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2335 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2336 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2337 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2338 return method->checked_exceptions_length(); |
0 | 2339 JVM_END |
2340 | |
2341 | |
2342 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2343 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2344 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2345 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2346 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2347 memcpy(code, method->code_base(), method->code_size()); |
0 | 2348 JVM_END |
2349 | |
2350 | |
2351 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2352 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2353 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2354 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2355 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2356 return method->code_size(); |
0 | 2357 JVM_END |
2358 | |
2359 | |
2360 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2361 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2362 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2363 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2364 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2365 ExceptionTable extable(method); |
6213
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2366 entry->start_pc = extable.start_pc(entry_index); |
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2367 entry->end_pc = extable.end_pc(entry_index); |
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2368 entry->handler_pc = extable.handler_pc(entry_index); |
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2369 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2370 JVM_END |
2371 | |
2372 | |
2373 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2374 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2375 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2376 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2377 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2378 return method->exception_table_length(); |
0 | 2379 JVM_END |
2380 | |
2381 | |
2382 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2383 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2384 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2385 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2386 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2387 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2388 JVM_END |
2389 | |
2390 | |
2391 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2392 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2393 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2394 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2395 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2396 JVM_END |
2397 | |
2398 | |
2399 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2400 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2401 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2402 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2403 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2404 return method->max_locals(); |
0 | 2405 JVM_END |
2406 | |
2407 | |
2408 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2409 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2410 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2411 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2412 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2413 return method->size_of_parameters(); |
0 | 2414 JVM_END |
2415 | |
2416 | |
2417 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2418 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2419 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2420 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2421 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2422 return method->verifier_max_stack(); |
0 | 2423 JVM_END |
2424 | |
2425 | |
2426 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2427 JVMWrapper("JVM_IsConstructorIx"); | |
2428 ResourceMark rm(THREAD); | |
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2429 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2430 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2431 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2432 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2433 JVM_END |
2434 | |
2435 | |
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2436 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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|
2437 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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|
2438 ResourceMark rm(THREAD); |
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|
2439 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2440 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2441 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2442 return method->is_overpass(); |
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|
2443 JVM_END |
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2444 |
0 | 2445 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2446 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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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->name()->as_utf8(); |
0 | 2451 JVM_END |
2452 | |
2453 | |
2454 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2455 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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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 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2459 return method->signature()->as_utf8(); |
0 | 2460 JVM_END |
2461 | |
2462 /** | |
2463 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2464 * read entries in the constant pool. Since the old verifier always | |
2465 * works on a copy of the code, it will not see any rewriting that | |
2466 * may possibly occur in the middle of verification. So it is important | |
2467 * that nothing it calls tries to use the cpCache instead of the raw | |
2468 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2469 */ | |
2470 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2471 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2472 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2473 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2474 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2475 switch (cp->tag_at(cp_index).value()) { |
2476 case JVM_CONSTANT_Fieldref: | |
2477 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2478 default: | |
2479 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2480 } | |
2481 ShouldNotReachHere(); | |
2482 return NULL; | |
2483 JVM_END | |
2484 | |
2485 | |
2486 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2487 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2488 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2489 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2490 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2491 switch (cp->tag_at(cp_index).value()) { |
2492 case JVM_CONSTANT_InterfaceMethodref: | |
2493 case JVM_CONSTANT_Methodref: | |
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|
2494 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2495 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2496 default: | |
2497 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2498 } | |
2499 ShouldNotReachHere(); | |
2500 return NULL; | |
2501 JVM_END | |
2502 | |
2503 | |
2504 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2505 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2506 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2507 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2508 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2509 switch (cp->tag_at(cp_index).value()) { |
2510 case JVM_CONSTANT_InterfaceMethodref: | |
2511 case JVM_CONSTANT_Methodref: | |
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2512 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2513 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2514 default: | |
2515 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2516 } | |
2517 ShouldNotReachHere(); | |
2518 return NULL; | |
2519 JVM_END | |
2520 | |
2521 | |
2522 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2523 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2524 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2525 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2526 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2527 switch (cp->tag_at(cp_index).value()) { |
2528 case JVM_CONSTANT_Fieldref: | |
2529 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2530 default: | |
2531 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2532 } | |
2533 ShouldNotReachHere(); | |
2534 return NULL; | |
2535 JVM_END | |
2536 | |
2537 | |
2538 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2539 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2540 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2541 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2542 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2543 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2544 return classname->as_utf8(); |
2545 JVM_END | |
2546 | |
2547 | |
2548 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2549 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2550 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2551 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2552 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2553 switch (cp->tag_at(cp_index).value()) { |
2554 case JVM_CONSTANT_Fieldref: { | |
2555 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2556 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2557 return classname->as_utf8(); |
2558 } | |
2559 default: | |
2560 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2561 } | |
2562 ShouldNotReachHere(); | |
2563 return NULL; | |
2564 JVM_END | |
2565 | |
2566 | |
2567 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2568 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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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_Methodref: | |
2574 case JVM_CONSTANT_InterfaceMethodref: { | |
2575 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2576 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2577 return classname->as_utf8(); |
2578 } | |
2579 default: | |
2580 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2581 } | |
2582 ShouldNotReachHere(); | |
2583 return NULL; | |
2584 JVM_END | |
2585 | |
2586 | |
3938 | 2587 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2588 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2589 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2590 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2591 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2592 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2593 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2594 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2595 switch (cp->tag_at(cp_index).value()) { |
2596 case JVM_CONSTANT_Fieldref: { | |
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2597 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2598 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2599 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2600 if (fs.name() == name && fs.signature() == signature) { | |
2601 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2602 } |
2603 } | |
2604 return -1; | |
2605 } | |
2606 default: | |
2607 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2608 } | |
2609 ShouldNotReachHere(); | |
2610 return 0; | |
2611 JVM_END | |
2612 | |
2613 | |
2614 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2615 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2616 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2617 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2618 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2619 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2620 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2621 switch (cp->tag_at(cp_index).value()) { |
2622 case JVM_CONSTANT_Methodref: | |
2623 case JVM_CONSTANT_InterfaceMethodref: { | |
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2624 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2625 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2626 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2627 int methods_count = methods->length(); |
2628 for (int i = 0; i < methods_count; i++) { | |
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2629 Method* method = methods->at(i); |
0 | 2630 if (method->name() == name && method->signature() == signature) { |
2631 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2632 } | |
2633 } | |
2634 return -1; | |
2635 } | |
2636 default: | |
2637 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2638 } | |
2639 ShouldNotReachHere(); | |
2640 return 0; | |
2641 JVM_END | |
2642 | |
2643 | |
2644 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2645 | |
2646 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2647 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2648 JVM_END | |
2649 | |
2650 | |
2651 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2652 JVMWrapper("JVM_IsSameClassPackage"); | |
2653 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2654 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2655 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2656 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2657 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2658 JVM_END | |
2659 | |
2660 | |
2661 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2662 | |
2663 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2664 JVMWrapper2("JVM_Open (%s)", fname); | |
2665 | |
2666 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2667 int result = os::open(fname, flags, mode); |
0 | 2668 if (result >= 0) { |
2669 return result; | |
2670 } else { | |
2671 switch(errno) { | |
2672 case EEXIST: | |
2673 return JVM_EEXIST; | |
2674 default: | |
2675 return -1; | |
2676 } | |
2677 } | |
2678 JVM_END | |
2679 | |
2680 | |
2681 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2682 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2683 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2684 return os::close(fd); |
0 | 2685 JVM_END |
2686 | |
2687 | |
2688 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2689 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2690 | |
2691 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2692 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2693 JVM_END |
2694 | |
2695 | |
2696 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2697 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2698 | |
2699 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2700 return (jint)os::write(fd, buf, nbytes); |
0 | 2701 JVM_END |
2702 | |
2703 | |
2704 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2705 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2706 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2707 return os::available(fd, pbytes); |
0 | 2708 JVM_END |
2709 | |
2710 | |
2711 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2712 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2713 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2714 return os::lseek(fd, offset, whence); |
0 | 2715 JVM_END |
2716 | |
2717 | |
2718 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2719 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2720 return os::ftruncate(fd, length); |
0 | 2721 JVM_END |
2722 | |
2723 | |
2724 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2725 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2726 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2727 return os::fsync(fd); |
0 | 2728 JVM_END |
2729 | |
2730 | |
2731 // Printing support ////////////////////////////////////////////////// | |
2732 extern "C" { | |
2733 | |
2734 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2735 // see bug 4399518, 4417214 | |
2736 if ((intptr_t)count <= 0) return -1; | |
2737 return vsnprintf(str, count, fmt, args); | |
2738 } | |
2739 | |
2740 | |
2741 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2742 va_list args; | |
2743 int len; | |
2744 va_start(args, fmt); | |
2745 len = jio_vsnprintf(str, count, fmt, args); | |
2746 va_end(args); | |
2747 return len; | |
2748 } | |
2749 | |
2750 | |
2751 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2752 int len; | |
2753 va_list args; | |
2754 va_start(args, fmt); | |
2755 len = jio_vfprintf(f, fmt, args); | |
2756 va_end(args); | |
2757 return len; | |
2758 } | |
2759 | |
2760 | |
2761 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2762 if (Arguments::vfprintf_hook() != NULL) { | |
2763 return Arguments::vfprintf_hook()(f, fmt, args); | |
2764 } else { | |
2765 return vfprintf(f, fmt, args); | |
2766 } | |
2767 } | |
2768 | |
2769 | |
2191 | 2770 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2771 int len; |
2772 va_list args; | |
2773 va_start(args, fmt); | |
2774 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2775 va_end(args); | |
2776 return len; | |
2777 } | |
2778 | |
2779 | |
2780 // HotSpot specific jio method | |
2781 void jio_print(const char* s) { | |
2782 // Try to make this function as atomic as possible. | |
2783 if (Arguments::vfprintf_hook() != NULL) { | |
2784 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2785 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2786 // 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
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431
diff
changeset
|
2787 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2788 } |
2789 } | |
2790 | |
2791 } // Extern C | |
2792 | |
2793 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2794 | |
2795 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2796 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2797 // OSThread objects. The exception to this rule is when the target object is the thread | |
2798 // doing the operation, in which case we know that the thread won't exit until the | |
2799 // operation is done (all exits being voluntary). There are a few cases where it is | |
2800 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2801 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2802 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2803 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2804 // implementation is local to this file, we always lock Threads_lock for that one. | |
2805 | |
2806 static void thread_entry(JavaThread* thread, TRAPS) { | |
2807 HandleMark hm(THREAD); | |
2808 Handle obj(THREAD, thread->threadObj()); | |
2809 JavaValue result(T_VOID); | |
2810 JavaCalls::call_virtual(&result, | |
2811 obj, | |
1142 | 2812 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
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|
2813 vmSymbols::run_method_name(), |
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
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|
2814 vmSymbols::void_method_signature(), |
0 | 2815 THREAD); |
2816 } | |
2817 | |
2818 | |
2819 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2820 JVMWrapper("JVM_StartThread"); | |
2821 JavaThread *native_thread = NULL; | |
2822 | |
2823 // We cannot hold the Threads_lock when we throw an exception, | |
2824 // due to rank ordering issues. Example: we might need to grab the | |
2825 // Heap_lock while we construct the exception. | |
2826 bool throw_illegal_thread_state = false; | |
2827 | |
2828 // We must release the Threads_lock before we can post a jvmti event | |
2829 // in Thread::start. | |
2830 { | |
2831 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2832 // we operate. | |
2833 MutexLocker mu(Threads_lock); | |
2834 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2835 // 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
|
2836 // 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
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1980
diff
changeset
|
2837 // 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
|
2838 // 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
|
2839 // (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
|
2840 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2841 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:
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diff
changeset
|
2842 throw_illegal_thread_state = true; |
0 | 2843 } else { |
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2844 // We could also check the stillborn flag to see if this thread was already stopped, but |
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|
2845 // for historical reasons we let the thread detect that itself when it starts running |
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|
2846 |
0 | 2847 jlong size = |
2848 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2849 // Allocate the C++ Thread structure and create the native thread. The | |
2850 // stack size retrieved from java is signed, but the constructor takes | |
2851 // size_t (an unsigned type), so avoid passing negative values which would | |
2852 // result in really large stacks. | |
2853 size_t sz = size > 0 ? (size_t) size : 0; | |
2854 native_thread = new JavaThread(&thread_entry, sz); | |
2855 | |
2856 // At this point it may be possible that no osthread was created for the | |
2857 // JavaThread due to lack of memory. Check for this situation and throw | |
2858 // an exception if necessary. Eventually we may want to change this so | |
2859 // that we only grab the lock if the thread was created successfully - | |
2860 // then we can also do this check and throw the exception in the | |
2861 // JavaThread constructor. | |
2862 if (native_thread->osthread() != NULL) { | |
2863 // Note: the current thread is not being used within "prepare". | |
2864 native_thread->prepare(jthread); | |
2865 } | |
2866 } | |
2867 } | |
2868 | |
2869 if (throw_illegal_thread_state) { | |
2870 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2871 } | |
2872 | |
2873 assert(native_thread != NULL, "Starting null thread?"); | |
2874 | |
2875 if (native_thread->osthread() == NULL) { | |
2876 // No one should hold a reference to the 'native_thread'. | |
2877 delete native_thread; | |
2878 if (JvmtiExport::should_post_resource_exhausted()) { | |
2879 JvmtiExport::post_resource_exhausted( | |
2880 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2881 "unable to create new native thread"); | |
2882 } | |
2883 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2884 "unable to create new native thread"); | |
2885 } | |
2886 | |
2887 Thread::start(native_thread); | |
2888 | |
2889 JVM_END | |
2890 | |
2891 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2892 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2893 // but is thought to be reliable and simple. In the case, where the receiver is the | |
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|
2894 // same thread as the sender, no safepoint is needed. |
0 | 2895 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2896 JVMWrapper("JVM_StopThread"); | |
2897 | |
2898 oop java_throwable = JNIHandles::resolve(throwable); | |
2899 if (java_throwable == NULL) { | |
2900 THROW(vmSymbols::java_lang_NullPointerException()); | |
2901 } | |
2902 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2903 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
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2904 Events::log_exception(JavaThread::current(), |
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|
2905 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
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2906 receiver, (address)java_thread, throwable); |
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|
2907 // First check if thread is alive |
0 | 2908 if (receiver != NULL) { |
2909 // Check if exception is getting thrown at self (use oop equality, since the | |
2910 // target object might exit) | |
2911 if (java_thread == thread->threadObj()) { | |
2912 THROW_OOP(java_throwable); | |
2913 } else { | |
2914 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2915 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2916 } | |
2917 } | |
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|
2918 else { |
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|
2919 // Either: |
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|
2920 // - target thread has not been started before being stopped, or |
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|
2921 // - target thread already terminated |
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diff
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|
2922 // We could read the threadStatus to determine which case it is |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2923 // but that is overkill as it doesn't matter. We must set the |
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diff
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|
2924 // stillborn flag for the first case, and if the thread has already |
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diff
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|
2925 // exited setting this flag has no affect |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2926 java_lang_Thread::set_stillborn(java_thread); |
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|
2927 } |
0 | 2928 JVM_END |
2929 | |
2930 | |
2931 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2932 JVMWrapper("JVM_IsThreadAlive"); | |
2933 | |
2934 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2935 return java_lang_Thread::is_alive(thread_oop); | |
2936 JVM_END | |
2937 | |
2938 | |
2939 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2940 JVMWrapper("JVM_SuspendThread"); | |
2941 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2942 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2943 | |
2944 if (receiver != NULL) { | |
2945 // thread has run and has not exited (still on threads list) | |
2946 | |
2947 { | |
2948 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2949 if (receiver->is_external_suspend()) { | |
2950 // Don't allow nested external suspend requests. We can't return | |
2951 // an error from this interface so just ignore the problem. | |
2952 return; | |
2953 } | |
2954 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2955 return; | |
2956 } | |
2957 receiver->set_external_suspend(); | |
2958 } | |
2959 | |
2960 // java_suspend() will catch threads in the process of exiting | |
2961 // and will ignore them. | |
2962 receiver->java_suspend(); | |
2963 | |
2964 // It would be nice to have the following assertion in all the | |
2965 // time, but it is possible for a racing resume request to have | |
2966 // resumed this thread right after we suspended it. Temporarily | |
2967 // enable this assertion if you are chasing a different kind of | |
2968 // bug. | |
2969 // | |
2970 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2971 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2972 } | |
2973 JVM_END | |
2974 | |
2975 | |
2976 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2977 JVMWrapper("JVM_ResumeThread"); | |
2978 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2979 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2980 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2981 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2982 // looks at it. | |
2983 MutexLocker ml(Threads_lock); | |
2984 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2985 if (thr != NULL) { | |
2986 // the thread has run and is not in the process of exiting | |
2987 thr->java_resume(); | |
2988 } | |
2989 JVM_END | |
2990 | |
2991 | |
2992 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2993 JVMWrapper("JVM_SetThreadPriority"); | |
2994 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2995 MutexLocker ml(Threads_lock); | |
2996 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2997 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2998 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2999 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3000 Thread::set_priority(thr, (ThreadPriority)prio); | |
3001 } | |
3002 JVM_END | |
3003 | |
3004 | |
3005 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3006 JVMWrapper("JVM_Yield"); | |
3007 if (os::dont_yield()) return; | |
4006 | 3008 #ifndef USDT2 |
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|
3009 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3010 #else /* USDT2 */ |
3011 HOTSPOT_THREAD_YIELD(); | |
3012 #endif /* USDT2 */ | |
0 | 3013 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3014 // Critical for similar threading behaviour | |
3015 if (ConvertYieldToSleep) { | |
3016 os::sleep(thread, MinSleepInterval, false); | |
3017 } else { | |
3018 os::yield(); | |
3019 } | |
3020 JVM_END | |
3021 | |
3022 | |
3023 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3024 JVMWrapper("JVM_Sleep"); | |
3025 | |
3026 if (millis < 0) { | |
3027 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3028 } | |
3029 | |
3030 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3031 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3032 } | |
3033 | |
3034 // Save current thread state and restore it at the end of this block. | |
3035 // And set new thread state to SLEEPING. | |
3036 JavaThreadSleepState jtss(thread); | |
3037 | |
4006 | 3038 #ifndef USDT2 |
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parents:
1144
diff
changeset
|
3039 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3040 #else /* USDT2 */ |
3041 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3042 millis); | |
3043 #endif /* USDT2 */ | |
1324
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parents:
1144
diff
changeset
|
3044 |
10405 | 3045 EventThreadSleep event; |
3046 | |
0 | 3047 if (millis == 0) { |
3048 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3049 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3050 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3051 // for SOLARIS | |
3052 if (ConvertSleepToYield) { | |
3053 os::yield(); | |
3054 } else { | |
3055 ThreadState old_state = thread->osthread()->get_state(); | |
3056 thread->osthread()->set_state(SLEEPING); | |
3057 os::sleep(thread, MinSleepInterval, false); | |
3058 thread->osthread()->set_state(old_state); | |
3059 } | |
3060 } else { | |
3061 ThreadState old_state = thread->osthread()->get_state(); | |
3062 thread->osthread()->set_state(SLEEPING); | |
3063 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3064 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3065 // us while we were sleeping. We do not overwrite those. | |
3066 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3067 if (event.should_commit()) { |
3068 event.set_time(millis); | |
3069 event.commit(); | |
3070 } | |
4006 | 3071 #ifndef USDT2 |
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|
3072 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3073 #else /* USDT2 */ |
3074 HOTSPOT_THREAD_SLEEP_END( | |
3075 1); | |
3076 #endif /* USDT2 */ | |
0 | 3077 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3078 // to properly restore the thread state. That's likely wrong. | |
3079 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3080 } | |
3081 } | |
3082 thread->osthread()->set_state(old_state); | |
3083 } | |
10405 | 3084 if (event.should_commit()) { |
3085 event.set_time(millis); | |
3086 event.commit(); | |
3087 } | |
4006 | 3088 #ifndef USDT2 |
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diff
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|
3089 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3090 #else /* USDT2 */ |
3091 HOTSPOT_THREAD_SLEEP_END( | |
3092 0); | |
3093 #endif /* USDT2 */ | |
0 | 3094 JVM_END |
3095 | |
3096 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3097 JVMWrapper("JVM_CurrentThread"); | |
3098 oop jthread = thread->threadObj(); | |
3099 assert (thread != NULL, "no current thread!"); | |
3100 return JNIHandles::make_local(env, jthread); | |
3101 JVM_END | |
3102 | |
3103 | |
3104 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3105 JVMWrapper("JVM_CountStackFrames"); | |
3106 | |
3107 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3108 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3109 bool throw_illegal_thread_state = false; | |
3110 int count = 0; | |
3111 | |
3112 { | |
3113 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3114 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3115 // acquire of the lock | |
3116 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3117 | |
3118 if (thr == NULL) { | |
3119 // do nothing | |
3120 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3121 // Check whether this java thread has been suspended already. If not, throws | |
3122 // IllegalThreadStateException. We defer to throw that exception until | |
3123 // Threads_lock is released since loading exception class has to leave VM. | |
3124 // The correct way to test a thread is actually suspended is | |
3125 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3126 // the Threads_lock. The above tests are sufficient for our purposes | |
3127 // provided the walkability of the stack is stable - which it isn't | |
3128 // 100% but close enough for most practical purposes. | |
3129 throw_illegal_thread_state = true; | |
3130 } else { | |
3131 // Count all java activation, i.e., number of vframes | |
3132 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3133 // Native frames are not counted | |
3134 if (!vfst.method()->is_native()) count++; | |
3135 } | |
3136 } | |
3137 } | |
3138 | |
3139 if (throw_illegal_thread_state) { | |
3140 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3141 "this thread is not suspended"); | |
3142 } | |
3143 return count; | |
3144 JVM_END | |
3145 | |
3146 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3147 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3148 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3149 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3150 // outside the critical section. Threads_lock is hot so we want to minimize | |
3151 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3152 // two steps. The 1st phase, performed under Threads_lock, would return | |
3153 // a closure that'd be invoked after Threads_lock was dropped. | |
3154 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3155 // admit spurious wakeups. | |
3156 | |
3157 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3158 JVMWrapper("JVM_Interrupt"); | |
3159 | |
3160 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3161 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3162 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3163 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3164 // acquire of the lock | |
3165 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3166 if (thr != NULL) { | |
3167 Thread::interrupt(thr); | |
3168 } | |
3169 JVM_END | |
3170 | |
3171 | |
3172 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3173 JVMWrapper("JVM_IsInterrupted"); | |
3174 | |
3175 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3176 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
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 if (thr == NULL) { | |
3182 return JNI_FALSE; | |
3183 } else { | |
3184 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3185 } | |
3186 JVM_END | |
3187 | |
3188 | |
3189 // Return true iff the current thread has locked the object passed in | |
3190 | |
3191 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3192 JVMWrapper("JVM_HoldsLock"); | |
3193 assert(THREAD->is_Java_thread(), "sanity check"); | |
3194 if (obj == NULL) { | |
3195 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3196 } | |
3197 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3198 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3199 JVM_END | |
3200 | |
3201 | |
3202 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3203 JVMWrapper("JVM_DumpAllStacks"); | |
3204 VM_PrintThreads op; | |
3205 VMThread::execute(&op); | |
3206 if (JvmtiExport::should_post_data_dump()) { | |
3207 JvmtiExport::post_data_dump(); | |
3208 } | |
3209 JVM_END | |
3210 | |
4006 | 3211 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3212 JVMWrapper("JVM_SetNativeThreadName"); | |
3213 ResourceMark rm(THREAD); | |
3214 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3215 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3216 // Thread naming only supported for the current thread, doesn't work for | |
3217 // target threads. | |
3218 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3219 // we don't set the name of an attached thread to avoid stepping | |
3220 // on other programs | |
3221 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3222 os::set_native_thread_name(thread_name); | |
3223 } | |
3224 JVM_END | |
0 | 3225 |
3226 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3227 | |
3228 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3229 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3230 if (jthread->privileged_stack_top() == NULL) return false; | |
3231 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3232 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3233 if (loader == NULL) return true; | |
3234 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3235 if (trusted) return true; | |
3236 } | |
3237 return false; | |
3238 } | |
3239 | |
3240 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3241 JVMWrapper("JVM_CurrentLoadedClass"); | |
3242 ResourceMark rm(THREAD); | |
3243 | |
3244 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3245 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3246 bool trusted = is_trusted_frame(thread, &vfst); | |
3247 if (trusted) return NULL; | |
3248 | |
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|
3249 Method* m = vfst.method(); |
0 | 3250 if (!m->is_native()) { |
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3251 InstanceKlass* holder = m->method_holder(); |
18fb7da42534
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diff
changeset
|
3252 oop loader = holder->class_loader(); |
0 | 3253 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
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3254 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3255 } |
3256 } | |
3257 } | |
3258 return NULL; | |
3259 JVM_END | |
3260 | |
3261 | |
3262 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3263 JVMWrapper("JVM_CurrentClassLoader"); | |
3264 ResourceMark rm(THREAD); | |
3265 | |
3266 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3267 | |
3268 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3269 bool trusted = is_trusted_frame(thread, &vfst); | |
3270 if (trusted) return NULL; | |
3271 | |
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3272 Method* m = vfst.method(); |
0 | 3273 if (!m->is_native()) { |
6940
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|
3274 InstanceKlass* holder = m->method_holder(); |
0 | 3275 assert(holder->is_klass(), "just checking"); |
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changeset
|
3276 oop loader = holder->class_loader(); |
0 | 3277 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3278 return JNIHandles::make_local(env, loader); | |
3279 } | |
3280 } | |
3281 } | |
3282 return NULL; | |
3283 JVM_END | |
3284 | |
3285 | |
3286 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3287 JVMWrapper("JVM_GetClassContext"); | |
3288 ResourceMark rm(THREAD); | |
3289 JvmtiVMObjectAllocEventCollector oam; | |
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changeset
|
3290 vframeStream vfst(thread); |
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|
3291 |
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|
3292 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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|
3293 // This must only be called from SecurityManager.getClassContext |
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changeset
|
3294 Method* m = vfst.method(); |
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|
3295 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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|
3296 m->name() == vmSymbols::getClassContext_name() && |
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3297 m->signature() == vmSymbols::void_class_array_signature())) { |
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changeset
|
3298 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3299 } |
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|
3300 } |
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|
3301 |
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changeset
|
3302 // Collect method holders |
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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changeset
|
3303 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3304 for (; !vfst.at_end(); vfst.security_next()) { |
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3305 Method* m = vfst.method(); |
0 | 3306 // Native frames are not returned |
8866
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|
3307 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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changeset
|
3308 Klass* holder = m->method_holder(); |
0 | 3309 assert(holder->is_klass(), "just checking"); |
11001
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changeset
|
3310 klass_array->append(holder); |
0 | 3311 } |
3312 } | |
3313 | |
3314 // Create result array of type [Ljava/lang/Class; | |
11001
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changeset
|
3315 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3316 // Fill in mirrors corresponding to method holders |
11001
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changeset
|
3317 for (int i = 0; i < klass_array->length(); i++) { |
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changeset
|
3318 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3319 } |
3320 | |
3321 return (jobjectArray) JNIHandles::make_local(env, result); | |
3322 JVM_END | |
3323 | |
3324 | |
3325 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3326 JVMWrapper("JVM_ClassDepth"); | |
3327 ResourceMark rm(THREAD); | |
3328 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3329 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3330 | |
3331 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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changeset
|
3332 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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changeset
|
3333 if (class_name_sym == NULL) { |
0 | 3334 return -1; |
3335 } | |
3336 | |
3337 int depth = 0; | |
3338 | |
3339 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3340 if (!vfst.method()->is_native()) { | |
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changeset
|
3341 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3342 assert(holder->is_klass(), "just checking"); |
6940
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changeset
|
3343 if (holder->name() == class_name_sym) { |
0 | 3344 return depth; |
3345 } | |
3346 depth++; | |
3347 } | |
3348 } | |
3349 return -1; | |
3350 JVM_END | |
3351 | |
3352 | |
3353 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3354 JVMWrapper("JVM_ClassLoaderDepth"); | |
3355 ResourceMark rm(THREAD); | |
3356 int depth = 0; | |
3357 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3358 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3359 bool trusted = is_trusted_frame(thread, &vfst); | |
3360 if (trusted) return -1; | |
3361 | |
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|
3362 Method* m = vfst.method(); |
0 | 3363 if (!m->is_native()) { |
6940
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coleenp
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changeset
|
3364 InstanceKlass* holder = m->method_holder(); |
0 | 3365 assert(holder->is_klass(), "just checking"); |
6940
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changeset
|
3366 oop loader = holder->class_loader(); |
0 | 3367 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3368 return depth; | |
3369 } | |
3370 depth++; | |
3371 } | |
3372 } | |
3373 return -1; | |
3374 JVM_END | |
3375 | |
3376 | |
3377 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3378 | |
3379 | |
3380 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3381 JVMWrapper("JVM_GetSystemPackage"); | |
3382 ResourceMark rm(THREAD); | |
3383 JvmtiVMObjectAllocEventCollector oam; | |
3384 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3385 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3386 return (jstring) JNIHandles::make_local(result); | |
3387 JVM_END | |
3388 | |
3389 | |
3390 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3391 JVMWrapper("JVM_GetSystemPackages"); | |
3392 JvmtiVMObjectAllocEventCollector oam; | |
3393 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3394 return (jobjectArray) JNIHandles::make_local(result); | |
3395 JVM_END | |
3396 | |
3397 | |
3398 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3399 | |
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3400 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3401 if (current_class == NULL) { |
3402 return true; | |
3403 } | |
3404 if ((current_class == field_class) || access.is_public()) { | |
3405 return true; | |
3406 } | |
3407 | |
3408 if (access.is_protected()) { | |
3409 // See if current_class is a subclass of field_class | |
6983 | 3410 if (current_class->is_subclass_of(field_class)) { |
0 | 3411 return true; |
3412 } | |
3413 } | |
3414 | |
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|
3415 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3416 } |
3417 | |
3418 | |
3419 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3420 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3421 JVMWrapper("JVM_AllocateNewObject"); | |
3422 JvmtiVMObjectAllocEventCollector oam; | |
3423 // Receiver is not used | |
3424 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3425 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3426 | |
3427 // Cannot instantiate primitive types | |
3428 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3429 ResourceMark rm(THREAD); | |
3430 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3431 } | |
3432 | |
3433 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3434 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3435 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3436 ResourceMark rm(THREAD); |
3437 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3438 } | |
3439 | |
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changeset
|
3440 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
da91efe96a93
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changeset
|
3441 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3442 |
3443 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3444 | |
3445 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3446 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3447 | |
3448 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3449 curr_klass->initialize(CHECK_NULL); | |
3450 | |
3451 methodHandle m (THREAD, | |
3452 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3453 vmSymbols::void_method_signature())); | |
3454 if (m.is_null()) { | |
3455 ResourceMark rm(THREAD); | |
3456 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3457 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3458 vmSymbols::object_initializer_name(), |
3459 vmSymbols::void_method_signature())); | |
3460 } | |
3461 | |
3462 if (curr_klass == init_klass && !m->is_public()) { | |
3463 // Calling the constructor for class 'curr_klass'. | |
3464 // Only allow calls to a public no-arg constructor. | |
3465 // This path corresponds to creating an Externalizable object. | |
3466 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3467 } | |
3468 | |
3469 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3470 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3471 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3472 } | |
3473 | |
3474 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3475 // Call constructor m. This might call a constructor higher up in the hierachy | |
3476 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3477 | |
3478 return JNIHandles::make_local(obj()); | |
3479 JVM_END | |
3480 | |
3481 | |
3482 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3483 JVMWrapper("JVM_AllocateNewArray"); | |
3484 JvmtiVMObjectAllocEventCollector oam; | |
3485 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3486 | |
3487 if (java_lang_Class::is_primitive(mirror)) { | |
3488 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3489 } | |
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changeset
|
3490 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3491 oop result; |
3492 | |
6725
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changeset
|
3493 if (k->oop_is_typeArray()) { |
0 | 3494 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3495 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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diff
changeset
|
3496 } else if (k->oop_is_objArray()) { |
0 | 3497 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3498 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3499 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3500 result = oak->allocate(length, CHECK_NULL); | |
3501 } else { | |
3502 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3503 } | |
3504 return JNIHandles::make_local(env, result); | |
3505 JVM_END | |
3506 | |
3507 | |
3508 // Return the first non-null class loader up the execution stack, or null | |
3509 // if only code from the null class loader is on the stack. | |
3510 | |
3511 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3512 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3513 // UseNewReflection | |
3514 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3515 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3516 if (loader != NULL) { |
3517 return JNIHandles::make_local(env, loader); | |
3518 } | |
3519 } | |
3520 return NULL; | |
3521 JVM_END | |
3522 | |
3523 | |
3524 // Load a class relative to the most recent class on the stack with a non-null | |
3525 // classloader. | |
3526 // This function has been deprecated and should not be considered part of the | |
3527 // specified JVM interface. | |
3528 | |
3529 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3530 jclass currClass, jstring currClassName)) | |
3531 JVMWrapper("JVM_LoadClass0"); | |
3532 // Receiver is not used | |
3533 ResourceMark rm(THREAD); | |
3534 | |
3535 // Class name argument is not guaranteed to be in internal format | |
3536 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3537 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3538 | |
3539 const char* str = java_lang_String::as_utf8_string(string()); | |
3540 | |
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2162
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changeset
|
3541 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3542 // It's impossible to create this class; the name cannot fit |
3543 // into the constant pool. | |
3544 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3545 } | |
3546 | |
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changeset
|
3547 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3548 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3549 // Find the most recent class on the stack with a non-null classloader | |
3550 oop loader = NULL; | |
3551 oop protection_domain = NULL; | |
3552 if (curr_klass.is_null()) { | |
3553 for (vframeStream vfst(thread); | |
3554 !vfst.at_end() && loader == NULL; | |
3555 vfst.next()) { | |
3556 if (!vfst.method()->is_native()) { | |
6940
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coleenp
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6831
diff
changeset
|
3557 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
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coleenp
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6831
diff
changeset
|
3558 loader = holder->class_loader(); |
18fb7da42534
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coleenp
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diff
changeset
|
3559 protection_domain = holder->protection_domain(); |
0 | 3560 } |
3561 } | |
3562 } else { | |
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changeset
|
3563 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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|
3564 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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|
3565 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3566 } |
3567 Handle h_loader(THREAD, loader); | |
3568 Handle h_prot (THREAD, protection_domain); | |
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715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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diff
changeset
|
3569 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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diff
changeset
|
3570 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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diff
changeset
|
3571 if (TraceClassResolution && result != NULL) { |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
6271
diff
changeset
|
3572 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
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6603316: Improve instrumentation for classes loaded at startup
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579
diff
changeset
|
3573 } |
715dceaa89b7
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diff
changeset
|
3574 return result; |
0 | 3575 JVM_END |
3576 | |
3577 | |
3578 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3579 | |
3580 | |
3581 // resolve array handle and check arguments | |
3582 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3583 if (arr == NULL) { | |
3584 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3585 } | |
3586 oop a = JNIHandles::resolve_non_null(arr); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3587 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3588 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3589 } | |
3590 return arrayOop(a); | |
3591 } | |
3592 | |
3593 | |
3594 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3595 JVMWrapper("JVM_GetArrayLength"); | |
3596 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3597 return a->length(); | |
3598 JVM_END | |
3599 | |
3600 | |
3601 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3602 JVMWrapper("JVM_Array_Get"); | |
3603 JvmtiVMObjectAllocEventCollector oam; | |
3604 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3605 jvalue value; | |
3606 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3607 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3608 return JNIHandles::make_local(env, box); | |
3609 JVM_END | |
3610 | |
3611 | |
3612 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3613 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3614 jvalue value; | |
3615 value.i = 0; // to initialize value before getting used in CHECK | |
3616 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3617 assert(a->is_typeArray(), "just checking"); | |
3618 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3619 BasicType wide_type = (BasicType) wCode; | |
3620 if (type != wide_type) { | |
3621 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3622 } | |
3623 return value; | |
3624 JVM_END | |
3625 | |
3626 | |
3627 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3628 JVMWrapper("JVM_SetArrayElement"); | |
3629 arrayOop a = check_array(env, arr, false, CHECK); | |
3630 oop box = JNIHandles::resolve(val); | |
3631 jvalue value; | |
3632 value.i = 0; // to initialize value before getting used in CHECK | |
3633 BasicType value_type; | |
3634 if (a->is_objArray()) { | |
3635 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3636 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3637 } else { | |
3638 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3639 } | |
3640 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3641 JVM_END | |
3642 | |
3643 | |
3644 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3645 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3646 arrayOop a = check_array(env, arr, true, CHECK); | |
3647 assert(a->is_typeArray(), "just checking"); | |
3648 BasicType value_type = (BasicType) vCode; | |
3649 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3650 JVM_END | |
3651 | |
3652 | |
3653 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3654 JVMWrapper("JVM_NewArray"); | |
3655 JvmtiVMObjectAllocEventCollector oam; | |
3656 oop element_mirror = JNIHandles::resolve(eltClass); | |
3657 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3658 return JNIHandles::make_local(env, result); | |
3659 JVM_END | |
3660 | |
3661 | |
3662 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3663 JVMWrapper("JVM_NewMultiArray"); | |
3664 JvmtiVMObjectAllocEventCollector oam; | |
3665 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3666 oop element_mirror = JNIHandles::resolve(eltClass); | |
3667 assert(dim_array->is_typeArray(), "just checking"); | |
3668 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3669 return JNIHandles::make_local(env, result); | |
3670 JVM_END | |
3671 | |
3672 | |
3673 // Networking library support //////////////////////////////////////////////////////////////////// | |
3674 | |
3675 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3676 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
3677 return 0; |
0 | 3678 JVM_END |
3679 | |
3680 | |
3681 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3682 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
3683 return os::socket(domain, type, protocol); |
0 | 3684 JVM_END |
3685 | |
3686 | |
3687 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3688 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3689 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
3690 return os::socket_close(fd); |
0 | 3691 JVM_END |
3692 | |
3693 | |
3694 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3695 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3696 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
3697 return os::socket_shutdown(fd, howto); |
0 | 3698 JVM_END |
3699 | |
3700 | |
3701 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3702 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3703 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3704 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3705 JVM_END |
3706 | |
3707 | |
3708 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3709 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3710 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3711 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3712 JVM_END |
3713 | |
3714 | |
3715 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3716 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3717 //%note jvm_r6 | |
1980
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ikrylov
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diff
changeset
|
3718 return os::timeout(fd, timeout); |
0 | 3719 JVM_END |
3720 | |
3721 | |
3722 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3723 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3724 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3725 return os::listen(fd, count); |
0 | 3726 JVM_END |
3727 | |
3728 | |
3729 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3730 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3731 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3732 return os::connect(fd, him, (socklen_t)len); |
0 | 3733 JVM_END |
3734 | |
3735 | |
3736 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3737 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3738 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3739 return os::bind(fd, him, (socklen_t)len); |
0 | 3740 JVM_END |
3741 | |
3742 | |
3743 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3744 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3745 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3746 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3747 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3748 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3749 return result; |
0 | 3750 JVM_END |
3751 | |
3752 | |
3753 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3754 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3755 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3756 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3757 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
|
3758 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3759 return result; |
0 | 3760 JVM_END |
3761 | |
3762 | |
3763 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3764 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3765 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3766 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3767 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
|
3768 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3769 return result; |
0 | 3770 JVM_END |
3771 | |
3772 | |
3773 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3774 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3775 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3776 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3777 JVM_END |
3778 | |
3779 | |
3780 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3781 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3782 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3783 return os::socket_available(fd, pbytes); |
0 | 3784 JVM_END |
3785 | |
3786 | |
3787 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3788 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3789 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3790 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3791 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3792 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3793 return result; |
0 | 3794 JVM_END |
3795 | |
3796 | |
3797 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3798 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3799 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3800 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3801 JVM_END |
3802 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3803 |
0 | 3804 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3805 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3806 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3807 JVM_END |
0 | 3808 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3809 |
0 | 3810 // Library support /////////////////////////////////////////////////////////////////////////// |
3811 | |
3812 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3813 //%note jvm_ct | |
3814 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3815 char ebuf[1024]; | |
3816 void *load_result; | |
3817 { | |
3818 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3819 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3820 } |
3821 if (load_result == NULL) { | |
3822 char msg[1024]; | |
3823 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3824 // Since 'ebuf' may contain a string encoded using | |
3825 // platform encoding scheme, we need to pass | |
3826 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3827 // as the last argument. See bug 6367357. | |
3828 Handle h_exception = | |
3829 Exceptions::new_exception(thread, | |
3830 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3831 msg, Exceptions::unsafe_to_utf8); | |
3832 | |
3833 THROW_HANDLE_0(h_exception); | |
3834 } | |
3835 return load_result; | |
3836 JVM_END | |
3837 | |
3838 | |
3839 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3840 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
3841 os::dll_unload(handle); |
0 | 3842 JVM_END |
3843 | |
3844 | |
3845 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3846 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3847 return os::dll_lookup(handle, name); |
0 | 3848 JVM_END |
3849 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3850 |
0 | 3851 // Floating point support //////////////////////////////////////////////////////////////////// |
3852 | |
3853 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3854 JVMWrapper("JVM_IsNaN"); | |
3855 return g_isnan(a); | |
3856 JVM_END | |
3857 | |
3858 | |
3859 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3860 | |
3861 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3862 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3863 return Threads::is_supported_jni_version_including_1_1(version); | |
3864 JVM_END | |
3865 | |
3866 | |
3867 // String support /////////////////////////////////////////////////////////////////////////// | |
3868 | |
3869 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3870 JVMWrapper("JVM_InternString"); | |
3871 JvmtiVMObjectAllocEventCollector oam; | |
3872 if (str == NULL) return NULL; | |
3873 oop string = JNIHandles::resolve_non_null(str); | |
3874 oop result = StringTable::intern(string, CHECK_NULL); | |
3875 return (jstring) JNIHandles::make_local(env, result); | |
3876 JVM_END | |
3877 | |
3878 | |
3879 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3880 | |
3881 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3882 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3883 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3884 // that only works with java threads. | |
3885 | |
3886 | |
3887 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3888 VM_Exit::block_if_vm_exited(); | |
3889 JVMWrapper("JVM_RawMonitorCreate"); | |
3890 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3891 } | |
3892 | |
3893 | |
3894 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3895 VM_Exit::block_if_vm_exited(); | |
3896 JVMWrapper("JVM_RawMonitorDestroy"); | |
3897 delete ((Mutex*) mon); | |
3898 } | |
3899 | |
3900 | |
3901 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3902 VM_Exit::block_if_vm_exited(); | |
3903 JVMWrapper("JVM_RawMonitorEnter"); | |
3904 ((Mutex*) mon)->jvm_raw_lock(); | |
3905 return 0; | |
3906 } | |
3907 | |
3908 | |
3909 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3910 VM_Exit::block_if_vm_exited(); | |
3911 JVMWrapper("JVM_RawMonitorExit"); | |
3912 ((Mutex*) mon)->jvm_raw_unlock(); | |
3913 } | |
3914 | |
3915 | |
3916 // Support for Serialization | |
3917 | |
3918 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3919 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3920 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3921 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3922 | |
3923 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3924 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3925 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3926 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3927 | |
3928 | |
3929 void initialize_converter_functions() { | |
3930 if (JDK_Version::is_gte_jdk14x_version()) { | |
3931 // These functions only exist for compatibility with 1.3.1 and earlier | |
3932 return; | |
3933 } | |
3934 | |
3935 // called from universe_post_init() | |
3936 assert( | |
3937 int_bits_to_float_fn == NULL && | |
3938 long_bits_to_double_fn == NULL && | |
3939 float_to_int_bits_fn == NULL && | |
3940 double_to_long_bits_fn == NULL , | |
3941 "initialization done twice" | |
3942 ); | |
3943 // initialize | |
3944 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3945 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3946 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3947 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3948 // verify | |
3949 assert( | |
3950 int_bits_to_float_fn != NULL && | |
3951 long_bits_to_double_fn != NULL && | |
3952 float_to_int_bits_fn != NULL && | |
3953 double_to_long_bits_fn != NULL , | |
3954 "initialization failed" | |
3955 ); | |
3956 } | |
3957 | |
3958 | |
3959 | |
3960 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3961 | |
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3962 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 3963 // Security Note: |
3964 // The Java level wrapper will perform the necessary security check allowing | |
3965 // us to pass the NULL as the initiating class loader. | |
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3966 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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3967 |
0 | 3968 KlassHandle klass_handle(THREAD, klass); |
3969 // Check if we should initialize the class | |
3970 if (init && klass_handle->oop_is_instance()) { | |
3971 klass_handle->initialize(CHECK_NULL); | |
3972 } | |
3973 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3974 } | |
3975 | |
3976 | |
3977 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
3978 | |
3979 #ifndef PRODUCT | |
3980 | |
3981 extern "C" { | |
3982 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
3983 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
3984 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
3985 } | |
3986 | |
3987 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
3988 JVMWrapper("JVM_AccessBoolVMFlag"); | |
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3989 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 3990 JVM_END |
3991 | |
3992 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
3993 JVMWrapper("JVM_AccessVMIntFlag"); | |
3994 intx v; | |
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3995 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 3996 *value = (jint)v; |
3997 return result; | |
3998 JVM_END | |
3999 | |
4000 | |
4001 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4002 JVMWrapper("JVM_VMBreakPoint"); | |
4003 oop the_obj = JNIHandles::resolve(obj); | |
4004 BREAKPOINT; | |
4005 JVM_END | |
4006 | |
4007 | |
4008 #endif | |
4009 | |
4010 | |
4011 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4012 | |
4013 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4014 JVMWrapper("JVM_InvokeMethod"); | |
4015 Handle method_handle; | |
4016 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4017 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4018 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4019 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4020 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4021 jobject res = JNIHandles::make_local(env, result); | |
4022 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4023 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4024 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4025 if (java_lang_Class::is_primitive(ret_type)) { | |
4026 // Only for primitive type vm allocates memory for java object. | |
4027 // See box() method. | |
4028 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4029 } | |
4030 } | |
4031 return res; | |
4032 } else { | |
4033 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4034 } | |
4035 JVM_END | |
4036 | |
4037 | |
4038 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4039 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4040 oop constructor_mirror = JNIHandles::resolve(c); | |
4041 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4042 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4043 jobject res = JNIHandles::make_local(env, result); | |
4044 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4045 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4046 } | |
4047 return res; | |
4048 JVM_END | |
4049 | |
4050 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4051 | |
4052 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4053 JVMWrapper("JVM_SupportsCX8"); | |
4054 return VM_Version::supports_cx8(); | |
4055 JVM_END | |
4056 | |
4057 | |
4058 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4059 JVMWrapper("JVM_CX8Field"); | |
4060 jlong res; | |
4061 oop o = JNIHandles::resolve(obj); | |
4062 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4063 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4064 | |
4065 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4066 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4067 | |
4068 return res == oldVal; | |
4069 JVM_END | |
4070 | |
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4071 // DTrace /////////////////////////////////////////////////////////////////// |
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4072 |
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4073 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4074 JVMWrapper("JVM_DTraceGetVersion"); |
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4075 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4076 JVM_END |
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4077 |
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4078 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4079 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4080 JVM_DTraceProvider* providers)) |
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4081 JVMWrapper("JVM_DTraceActivate"); |
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4082 return DTraceJSDT::activate( |
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4083 version, module_name, providers_count, providers, CHECK_0); |
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4084 JVM_END |
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4085 |
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4086 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4087 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4088 return DTraceJSDT::is_probe_enabled(method); |
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4089 JVM_END |
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4090 |
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4091 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4092 JVMWrapper("JVM_DTraceDispose"); |
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4093 DTraceJSDT::dispose(handle); |
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4094 JVM_END |
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4095 |
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4096 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4097 JVMWrapper("JVM_DTraceIsSupported"); |
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4098 return DTraceJSDT::is_supported(); |
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4099 JVM_END |
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4100 |
0 | 4101 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4102 // jvmti agent threads, and JNI attaching threads are skipped) | |
4103 // See CR 6404306 regarding JNI attaching threads | |
4104 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4105 ResourceMark rm(THREAD); | |
4106 ThreadsListEnumerator tle(THREAD, false, false); | |
4107 JvmtiVMObjectAllocEventCollector oam; | |
4108 | |
4109 int num_threads = tle.num_threads(); | |
1142 | 4110 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4111 objArrayHandle threads_ah(THREAD, r); |
4112 | |
4113 for (int i = 0; i < num_threads; i++) { | |
4114 Handle h = tle.get_threadObj(i); | |
4115 threads_ah->obj_at_put(i, h()); | |
4116 } | |
4117 | |
4118 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4119 JVM_END | |
4120 | |
4121 | |
4122 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4123 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4124 // the corresponding entry in the given threads array | |
4125 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4126 JVMWrapper("JVM_DumpThreads"); | |
4127 JvmtiVMObjectAllocEventCollector oam; | |
4128 | |
4129 // Check if threads is null | |
4130 if (threads == NULL) { | |
4131 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4132 } | |
4133 | |
4134 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4135 objArrayHandle ah(THREAD, a); | |
4136 int num_threads = ah->length(); | |
4137 // check if threads is non-empty array | |
4138 if (num_threads == 0) { | |
4139 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4140 } | |
4141 | |
4142 // check if threads is not an array of objects of Thread class | |
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4143 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4144 if (k != SystemDictionary::Thread_klass()) { |
0 | 4145 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4146 } | |
4147 | |
4148 ResourceMark rm(THREAD); | |
4149 | |
4150 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4151 for (int i = 0; i < num_threads; i++) { | |
4152 oop thread_obj = ah->obj_at(i); | |
4153 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4154 thread_handle_array->append(h); | |
4155 } | |
4156 | |
4157 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4158 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4159 | |
4160 JVM_END | |
4161 | |
4162 // JVM monitoring and management support | |
4163 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4164 return Management::get_jmm_interface(version); | |
4165 JVM_END | |
4166 | |
4167 // com.sun.tools.attach.VirtualMachine agent properties support | |
4168 // | |
4169 // Initialize the agent properties with the properties maintained in the VM | |
4170 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4171 JVMWrapper("JVM_InitAgentProperties"); | |
4172 ResourceMark rm; | |
4173 | |
4174 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4175 | |
4176 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4177 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4178 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4179 return properties; | |
4180 JVM_END | |
4181 | |
4182 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4183 { | |
4184 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4185 JvmtiVMObjectAllocEventCollector oam; | |
4186 | |
4187 if (ofClass == NULL) { | |
4188 return NULL; | |
4189 } | |
4190 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4191 // Special handling for primitive objects | |
4192 if (java_lang_Class::is_primitive(mirror())) { | |
4193 return NULL; | |
4194 } | |
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4195 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4196 if (!k->oop_is_instance()) { |
0 | 4197 return NULL; |
4198 } | |
4199 instanceKlassHandle ik_h(THREAD, k); | |
4200 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4201 if (encl_method_class_idx == 0) { | |
4202 return NULL; | |
4203 } | |
1142 | 4204 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4205 objArrayHandle dest(THREAD, dest_o); |
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4206 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4207 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4208 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4209 if (encl_method_method_idx != 0) { | |
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4210 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4211 extract_low_short_from_int( |
4212 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4213 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4214 dest->obj_at_put(1, str()); | |
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4215 sym = ik_h->constants()->symbol_at( |
0 | 4216 extract_high_short_from_int( |
4217 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4218 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4219 dest->obj_at_put(2, str()); | |
4220 } | |
4221 return (jobjectArray) JNIHandles::make_local(dest()); | |
4222 } | |
4223 JVM_END | |
4224 | |
4225 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4226 jint javaThreadState)) | |
4227 { | |
4228 // If new thread states are added in future JDK and VM versions, | |
4229 // this should check if the JDK version is compatible with thread | |
4230 // states supported by the VM. Return NULL if not compatible. | |
4231 // | |
4232 // This function must map the VM java_lang_Thread::ThreadStatus | |
4233 // to the Java thread state that the JDK supports. | |
4234 // | |
4235 | |
4236 typeArrayHandle values_h; | |
4237 switch (javaThreadState) { | |
4238 case JAVA_THREAD_STATE_NEW : { | |
4239 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4240 values_h = typeArrayHandle(THREAD, r); | |
4241 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4242 break; | |
4243 } | |
4244 case JAVA_THREAD_STATE_RUNNABLE : { | |
4245 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4246 values_h = typeArrayHandle(THREAD, r); | |
4247 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4248 break; | |
4249 } | |
4250 case JAVA_THREAD_STATE_BLOCKED : { | |
4251 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4252 values_h = typeArrayHandle(THREAD, r); | |
4253 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4254 break; | |
4255 } | |
4256 case JAVA_THREAD_STATE_WAITING : { | |
4257 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4258 values_h = typeArrayHandle(THREAD, r); | |
4259 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4260 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4261 break; | |
4262 } | |
4263 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4264 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4265 values_h = typeArrayHandle(THREAD, r); | |
4266 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4267 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4268 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4269 break; | |
4270 } | |
4271 case JAVA_THREAD_STATE_TERMINATED : { | |
4272 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4273 values_h = typeArrayHandle(THREAD, r); | |
4274 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4275 break; | |
4276 } | |
4277 default: | |
4278 // Unknown state - probably incompatible JDK version | |
4279 return NULL; | |
4280 } | |
4281 | |
4282 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4283 } | |
4284 JVM_END | |
4285 | |
4286 | |
4287 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4288 jint javaThreadState, | |
4289 jintArray values)) | |
4290 { | |
4291 // If new thread states are added in future JDK and VM versions, | |
4292 // this should check if the JDK version is compatible with thread | |
4293 // states supported by the VM. Return NULL if not compatible. | |
4294 // | |
4295 // This function must map the VM java_lang_Thread::ThreadStatus | |
4296 // to the Java thread state that the JDK supports. | |
4297 // | |
4298 | |
4299 ResourceMark rm; | |
4300 | |
4301 // Check if threads is null | |
4302 if (values == NULL) { | |
4303 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4304 } | |
4305 | |
4306 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4307 typeArrayHandle values_h(THREAD, v); | |
4308 | |
4309 objArrayHandle names_h; | |
4310 switch (javaThreadState) { | |
4311 case JAVA_THREAD_STATE_NEW : { | |
4312 assert(values_h->length() == 1 && | |
4313 values_h->int_at(0) == java_lang_Thread::NEW, | |
4314 "Invalid threadStatus value"); | |
4315 | |
1142 | 4316 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4317 1, /* only 1 substate */ |
4318 CHECK_NULL); | |
4319 names_h = objArrayHandle(THREAD, r); | |
4320 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4321 names_h->obj_at_put(0, name()); | |
4322 break; | |
4323 } | |
4324 case JAVA_THREAD_STATE_RUNNABLE : { | |
4325 assert(values_h->length() == 1 && | |
4326 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4327 "Invalid threadStatus value"); | |
4328 | |
1142 | 4329 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4330 1, /* only 1 substate */ |
4331 CHECK_NULL); | |
4332 names_h = objArrayHandle(THREAD, r); | |
4333 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4334 names_h->obj_at_put(0, name()); | |
4335 break; | |
4336 } | |
4337 case JAVA_THREAD_STATE_BLOCKED : { | |
4338 assert(values_h->length() == 1 && | |
4339 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4340 "Invalid threadStatus value"); | |
4341 | |
1142 | 4342 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4343 1, /* only 1 substate */ |
4344 CHECK_NULL); | |
4345 names_h = objArrayHandle(THREAD, r); | |
4346 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4347 names_h->obj_at_put(0, name()); | |
4348 break; | |
4349 } | |
4350 case JAVA_THREAD_STATE_WAITING : { | |
4351 assert(values_h->length() == 2 && | |
4352 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4353 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4354 "Invalid threadStatus value"); | |
1142 | 4355 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4356 2, /* number of substates */ |
4357 CHECK_NULL); | |
4358 names_h = objArrayHandle(THREAD, r); | |
4359 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4360 CHECK_NULL); | |
4361 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4362 CHECK_NULL); | |
4363 names_h->obj_at_put(0, name0()); | |
4364 names_h->obj_at_put(1, name1()); | |
4365 break; | |
4366 } | |
4367 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4368 assert(values_h->length() == 3 && | |
4369 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4370 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4371 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4372 "Invalid threadStatus value"); | |
1142 | 4373 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4374 3, /* number of substates */ |
4375 CHECK_NULL); | |
4376 names_h = objArrayHandle(THREAD, r); | |
4377 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4378 CHECK_NULL); | |
4379 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4380 CHECK_NULL); | |
4381 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4382 CHECK_NULL); | |
4383 names_h->obj_at_put(0, name0()); | |
4384 names_h->obj_at_put(1, name1()); | |
4385 names_h->obj_at_put(2, name2()); | |
4386 break; | |
4387 } | |
4388 case JAVA_THREAD_STATE_TERMINATED : { | |
4389 assert(values_h->length() == 1 && | |
4390 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4391 "Invalid threadStatus value"); | |
1142 | 4392 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4393 1, /* only 1 substate */ |
4394 CHECK_NULL); | |
4395 names_h = objArrayHandle(THREAD, r); | |
4396 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4397 names_h->obj_at_put(0, name()); | |
4398 break; | |
4399 } | |
4400 default: | |
4401 // Unknown state - probably incompatible JDK version | |
4402 return NULL; | |
4403 } | |
4404 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4405 } | |
4406 JVM_END | |
4407 | |
4408 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4409 { | |
4410 memset(info, 0, sizeof(info_size)); | |
4411 | |
4412 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4413 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4414 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4415 | |
4416 // when we add a new capability in the jvm_version_info struct, we should also | |
4417 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4418 // counter defined in runtimeService.cpp. | |
4419 info->is_attachable = AttachListener::is_attach_supported(); | |
4420 } | |
4421 JVM_END |