Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 14521:29ccc4cbabca
Merge
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Wed, 12 Mar 2014 13:30:08 +0100 |
parents | d8041d695d19 |
children | b51e29501f30 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
14411 | 79 #ifdef TARGET_OS_FAMILY_aix |
80 # include "jvm_aix.h" | |
81 #endif | |
3960 | 82 #ifdef TARGET_OS_FAMILY_bsd |
83 # include "jvm_bsd.h" | |
84 #endif | |
1972 | 85 |
0 | 86 #include <errno.h> |
87 | |
88 /* | |
89 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
90 such ctors and calls MUST NOT come between an oop declaration/init and its | |
91 usage because if objects are move this may cause various memory stomps, bus | |
92 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
93 failures": | |
94 | |
95 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
96 JVMWrapper("JVM_GetClassDeclaredFields"); | |
97 | |
98 // Object address to be held directly in mirror & not visible to GC | |
99 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
100 | |
101 // If this ctor can hit a safepoint, moving objects around, then | |
102 ComplexConstructor foo; | |
103 | |
104 // Boom! mirror may point to JUNK instead of the intended object | |
105 (some dereference of mirror) | |
106 | |
107 // Here's another call that may block for GC, making mirror stale | |
108 MutexLocker ml(some_lock); | |
109 | |
110 // And here's an initializer that can result in a stale oop | |
111 // all in one step. | |
112 oop o = call_that_can_throw_exception(TRAPS); | |
113 | |
114 | |
115 The solution is to keep the oop declaration BELOW the ctor or function | |
116 call that might cause a GC, do another resolve to reassign the oop, or | |
117 consider use of a Handle instead of an oop so there is immunity from object | |
118 motion. But note that the "QUICK" entries below do not have a handlemark | |
119 and thus can only support use of handles passed in. | |
120 */ | |
121 | |
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122 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 123 ResourceMark rm; |
124 int line_number = -1; | |
125 const char * source_file = NULL; | |
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126 const char * trace = "explicit"; |
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127 InstanceKlass* caller = NULL; |
0 | 128 JavaThread* jthread = JavaThread::current(); |
129 if (jthread->has_last_Java_frame()) { | |
130 vframeStream vfst(jthread); | |
131 | |
132 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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133 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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134 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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135 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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136 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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137 |
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138 Method* last_caller = NULL; |
0 | 139 |
140 while (!vfst.at_end()) { | |
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141 Method* m = vfst.method(); |
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142 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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143 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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144 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 145 break; |
146 } | |
147 last_caller = m; | |
148 vfst.next(); | |
149 } | |
150 // if this is called from Class.forName0 and that is called from Class.forName, | |
151 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
152 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
153 bool found_it = false; | |
154 if (!vfst.at_end() && | |
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155 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 156 vfst.method()->name() == vmSymbols::forName0_name()) { |
157 vfst.next(); | |
158 if (!vfst.at_end() && | |
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159 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 160 vfst.method()->name() == vmSymbols::forName_name()) { |
161 vfst.next(); | |
162 found_it = true; | |
163 } | |
164 } else if (last_caller != NULL && | |
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165 last_caller->method_holder()->name() == |
0 | 166 vmSymbols::java_lang_ClassLoader() && |
167 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
168 last_caller->name() == vmSymbols::loadClass_name())) { | |
169 found_it = true; | |
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170 } else if (!vfst.at_end()) { |
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171 if (vfst.method()->is_native()) { |
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172 // JNI call |
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173 found_it = true; |
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174 } |
0 | 175 } |
176 if (found_it && !vfst.at_end()) { | |
177 // found the caller | |
178 caller = vfst.method()->method_holder(); | |
179 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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180 if (line_number == -1) { |
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181 // show method name if it's a native method |
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182 trace = vfst.method()->name_and_sig_as_C_string(); |
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183 } |
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184 Symbol* s = caller->source_file_name(); |
0 | 185 if (s != NULL) { |
186 source_file = s->as_C_string(); | |
187 } | |
188 } | |
189 } | |
190 if (caller != NULL) { | |
191 if (to_class != caller) { | |
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192 const char * from = caller->external_name(); |
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193 const char * to = to_class->external_name(); |
0 | 194 // print in a single call to reduce interleaving between threads |
195 if (source_file != NULL) { | |
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196 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 197 } else { |
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198 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 199 } |
200 } | |
201 } | |
202 } | |
203 | |
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204 void trace_class_resolution(Klass* to_class) { |
0 | 205 EXCEPTION_MARK; |
206 trace_class_resolution_impl(to_class, THREAD); | |
207 if (HAS_PENDING_EXCEPTION) { | |
208 CLEAR_PENDING_EXCEPTION; | |
209 } | |
210 } | |
211 | |
212 // Wrapper to trace JVM functions | |
213 | |
214 #ifdef ASSERT | |
215 class JVMTraceWrapper : public StackObj { | |
216 public: | |
217 JVMTraceWrapper(const char* format, ...) { | |
218 if (TraceJVMCalls) { | |
219 va_list ap; | |
220 va_start(ap, format); | |
221 tty->print("JVM "); | |
222 tty->vprint_cr(format, ap); | |
223 va_end(ap); | |
224 } | |
225 } | |
226 }; | |
227 | |
228 Histogram* JVMHistogram; | |
229 volatile jint JVMHistogram_lock = 0; | |
230 | |
231 class JVMHistogramElement : public HistogramElement { | |
232 public: | |
233 JVMHistogramElement(const char* name); | |
234 }; | |
235 | |
236 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
237 _name = elementName; | |
238 uintx count = 0; | |
239 | |
240 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
241 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
242 count +=1; | |
243 if ( (WarnOnStalledSpinLock > 0) | |
244 && (count % WarnOnStalledSpinLock == 0)) { | |
245 warning("JVMHistogram_lock seems to be stalled"); | |
246 } | |
247 } | |
248 } | |
249 | |
250 if(JVMHistogram == NULL) | |
251 JVMHistogram = new Histogram("JVM Call Counts",100); | |
252 | |
253 JVMHistogram->add_element(this); | |
254 Atomic::dec(&JVMHistogram_lock); | |
255 } | |
256 | |
257 #define JVMCountWrapper(arg) \ | |
258 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
259 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
260 | |
261 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
262 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
263 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
264 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
265 #else | |
266 #define JVMWrapper(arg1) | |
267 #define JVMWrapper2(arg1, arg2) | |
268 #define JVMWrapper3(arg1, arg2, arg3) | |
269 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
270 #endif | |
271 | |
272 | |
273 // Interface version ///////////////////////////////////////////////////////////////////// | |
274 | |
275 | |
276 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
277 return JVM_INTERFACE_VERSION; | |
278 JVM_END | |
279 | |
280 | |
281 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
282 | |
283 | |
284 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
285 JVMWrapper("JVM_CurrentTimeMillis"); | |
286 return os::javaTimeMillis(); | |
287 JVM_END | |
288 | |
289 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
290 JVMWrapper("JVM_NanoTime"); | |
291 return os::javaTimeNanos(); | |
292 JVM_END | |
293 | |
294 | |
295 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
296 jobject dst, jint dst_pos, jint length)) | |
297 JVMWrapper("JVM_ArrayCopy"); | |
298 // Check if we have null pointers | |
299 if (src == NULL || dst == NULL) { | |
300 THROW(vmSymbols::java_lang_NullPointerException()); | |
301 } | |
302 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
303 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
304 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
305 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
306 // Do copy | |
6983 | 307 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 308 JVM_END |
309 | |
310 | |
311 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
312 JavaValue r(T_OBJECT); | |
313 // public synchronized Object put(Object key, Object value); | |
314 HandleMark hm(THREAD); | |
315 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
316 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
317 JavaCalls::call_virtual(&r, | |
318 props, | |
1142 | 319 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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320 vmSymbols::put_name(), |
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321 vmSymbols::object_object_object_signature(), |
0 | 322 key_str, |
323 value_str, | |
324 THREAD); | |
325 } | |
326 | |
327 | |
328 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
329 | |
330 | |
331 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
332 JVMWrapper("JVM_InitProperties"); | |
333 ResourceMark rm; | |
334 | |
335 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
336 | |
337 // System property list includes both user set via -D option and | |
338 // jvm system specific properties. | |
339 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
340 PUTPROP(props, p->key(), p->value()); | |
341 } | |
342 | |
343 // Convert the -XX:MaxDirectMemorySize= command line flag | |
344 // to the sun.nio.MaxDirectMemorySize property. | |
345 // Do this after setting user properties to prevent people | |
346 // from setting the value with a -D option, as requested. | |
347 { | |
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348 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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349 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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350 } else { |
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351 char as_chars[256]; |
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352 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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353 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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354 } |
0 | 355 } |
356 | |
357 // JVM monitoring and management support | |
358 // Add the sun.management.compiler property for the compiler's name | |
359 { | |
360 #undef CSIZE | |
361 #if defined(_LP64) || defined(_WIN64) | |
362 #define CSIZE "64-Bit " | |
363 #else | |
364 #define CSIZE | |
365 #endif // 64bit | |
366 | |
367 #ifdef TIERED | |
368 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
369 #else | |
370 #if defined(COMPILER1) | |
371 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
372 #elif defined(COMPILER2) | |
373 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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374 #elif defined(GRAAL) |
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375 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
0 | 376 #else |
377 const char* compiler_name = ""; | |
378 #endif // compilers | |
379 #endif // TIERED | |
380 | |
381 if (*compiler_name != '\0' && | |
382 (Arguments::mode() != Arguments::_int)) { | |
383 PUTPROP(props, "sun.management.compiler", compiler_name); | |
384 } | |
385 } | |
386 | |
387 return properties; | |
388 JVM_END | |
389 | |
390 | |
391 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
392 | |
393 extern volatile jint vm_created; | |
394 | |
395 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
396 if (vm_created != 0 && (code == 0)) { | |
397 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
398 Universe::run_finalizers_on_exit(); | |
399 } | |
400 before_exit(thread); | |
401 vm_exit(code); | |
402 JVM_END | |
403 | |
404 | |
405 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
406 before_exit(thread); | |
407 vm_exit(code); | |
408 JVM_END | |
409 | |
410 | |
411 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
412 register_on_exit_function(func); | |
413 JVM_END | |
414 | |
415 | |
416 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
417 JVMWrapper("JVM_GC"); | |
418 if (!DisableExplicitGC) { | |
419 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
420 } | |
421 JVM_END | |
422 | |
423 | |
424 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
425 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
426 return Universe::heap()->millis_since_last_gc(); | |
427 JVM_END | |
428 | |
429 | |
430 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
431 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
432 JVM_END | |
433 | |
434 | |
435 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
436 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
437 JVM_END | |
438 | |
439 static inline jlong convert_size_t_to_jlong(size_t val) { | |
440 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
441 NOT_LP64 (return (jlong)val;) | |
442 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
443 } | |
444 | |
445 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
446 JVMWrapper("JVM_TotalMemory"); | |
447 size_t n = Universe::heap()->capacity(); | |
448 return convert_size_t_to_jlong(n); | |
449 JVM_END | |
450 | |
451 | |
452 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
453 JVMWrapper("JVM_FreeMemory"); | |
454 CollectedHeap* ch = Universe::heap(); | |
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455 size_t n; |
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456 { |
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457 MutexLocker x(Heap_lock); |
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458 n = ch->capacity() - ch->used(); |
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459 } |
0 | 460 return convert_size_t_to_jlong(n); |
461 JVM_END | |
462 | |
463 | |
464 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
465 JVMWrapper("JVM_MaxMemory"); | |
466 size_t n = Universe::heap()->max_capacity(); | |
467 return convert_size_t_to_jlong(n); | |
468 JVM_END | |
469 | |
470 | |
471 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
472 JVMWrapper("JVM_ActiveProcessorCount"); | |
473 return os::active_processor_count(); | |
474 JVM_END | |
475 | |
476 | |
477 | |
478 // java.lang.Throwable ////////////////////////////////////////////////////// | |
479 | |
480 | |
481 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
482 JVMWrapper("JVM_FillInStackTrace"); | |
483 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
484 java_lang_Throwable::fill_in_stack_trace(exception); | |
485 JVM_END | |
486 | |
487 | |
488 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
489 JVMWrapper("JVM_GetStackTraceDepth"); | |
490 oop exception = JNIHandles::resolve(throwable); | |
491 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
492 JVM_END | |
493 | |
494 | |
495 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
496 JVMWrapper("JVM_GetStackTraceElement"); | |
497 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
498 oop exception = JNIHandles::resolve(throwable); | |
499 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
500 return JNIHandles::make_local(env, element); | |
501 JVM_END | |
502 | |
503 | |
504 // java.lang.Object /////////////////////////////////////////////// | |
505 | |
506 | |
507 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
508 JVMWrapper("JVM_IHashCode"); | |
509 // as implemented in the classic virtual machine; return 0 if object is NULL | |
510 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
511 JVM_END | |
512 | |
513 | |
514 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
515 JVMWrapper("JVM_MonitorWait"); | |
516 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
517 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
518 if (JvmtiExport::should_post_monitor_wait()) { | |
519 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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520 |
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521 // The current thread already owns the monitor and it has not yet |
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522 // been added to the wait queue so the current thread cannot be |
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523 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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524 // event handler cannot accidentally consume an unpark() meant for |
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525 // the ParkEvent associated with this ObjectMonitor. |
0 | 526 } |
527 ObjectSynchronizer::wait(obj, ms, CHECK); | |
528 JVM_END | |
529 | |
530 | |
531 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
532 JVMWrapper("JVM_MonitorNotify"); | |
533 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
534 ObjectSynchronizer::notify(obj, CHECK); | |
535 JVM_END | |
536 | |
537 | |
538 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
539 JVMWrapper("JVM_MonitorNotifyAll"); | |
540 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
541 ObjectSynchronizer::notifyall(obj, CHECK); | |
542 JVM_END | |
543 | |
544 | |
545 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
546 JVMWrapper("JVM_Clone"); | |
547 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
548 const KlassHandle klass (THREAD, obj->klass()); | |
549 JvmtiVMObjectAllocEventCollector oam; | |
550 | |
551 #ifdef ASSERT | |
552 // Just checking that the cloneable flag is set correct | |
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553 if (obj->is_array()) { |
0 | 554 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
555 } else { | |
556 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 557 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 558 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
559 } | |
560 #endif | |
561 | |
562 // Check if class of obj supports the Cloneable interface. | |
563 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
564 if (!klass->is_cloneable()) { | |
565 ResourceMark rm(THREAD); | |
566 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
567 } | |
568 | |
569 // Make shallow object copy | |
570 const int size = obj->size(); | |
571 oop new_obj = NULL; | |
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572 if (obj->is_array()) { |
0 | 573 const int length = ((arrayOop)obj())->length(); |
574 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
575 } else { | |
576 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
577 } | |
578 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
579 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
580 // be suspended in the middle of copying the pointer and end up with parts | |
581 // of two different pointers in the field. Subsequent dereferences will crash. | |
582 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
583 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
584 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
585 // The same is true of StubRoutines::object_copy and the various oop_copy | |
586 // variants, and of the code generated by the inline_native_clone intrinsic. | |
587 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
588 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
589 (size_t)align_object_size(size) / HeapWordsPerLong); | |
590 // Clear the header | |
591 new_obj->init_mark(); | |
592 | |
593 // Store check (mark entire object and let gc sort it out) | |
594 BarrierSet* bs = Universe::heap()->barrier_set(); | |
595 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
596 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
597 | |
598 // Caution: this involves a java upcall, so the clone should be | |
599 // "gc-robust" by this stage. | |
600 if (klass->has_finalizer()) { | |
601 assert(obj->is_instance(), "should be instanceOop"); | |
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602 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 603 } |
604 | |
605 return JNIHandles::make_local(env, oop(new_obj)); | |
606 JVM_END | |
607 | |
608 // java.lang.Compiler //////////////////////////////////////////////////// | |
609 | |
610 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
611 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
612 // functions are all silently ignored unless JVM warnings are printed. | |
613 | |
614 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
615 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
616 JVM_END | |
617 | |
618 | |
619 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
620 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
621 return JNI_FALSE; | |
622 JVM_END | |
623 | |
624 | |
625 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
626 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
627 return JNI_FALSE; | |
628 JVM_END | |
629 | |
630 | |
631 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
632 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
633 return JNI_FALSE; | |
634 JVM_END | |
635 | |
636 | |
637 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
638 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
639 return NULL; | |
640 JVM_END | |
641 | |
642 | |
643 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
644 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
645 JVM_END | |
646 | |
647 | |
648 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
649 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
650 JVM_END | |
651 | |
652 | |
653 | |
654 // Error message support ////////////////////////////////////////////////////// | |
655 | |
656 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
657 JVMWrapper("JVM_GetLastErrorString"); | |
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658 return (jint)os::lasterror(buf, len); |
0 | 659 JVM_END |
660 | |
661 | |
662 // java.io.File /////////////////////////////////////////////////////////////// | |
663 | |
664 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
665 JVMWrapper2("JVM_NativePath (%s)", path); | |
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666 return os::native_path(path); |
0 | 667 JVM_END |
668 | |
669 | |
670 // Misc. class handling /////////////////////////////////////////////////////////// | |
671 | |
672 | |
673 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
674 JVMWrapper("JVM_GetCallerClass"); | |
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675 |
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676 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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677 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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678 // temporarily for existing code to use until a replacement API is defined. |
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679 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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680 Klass* k = thread->security_get_caller_class(depth); |
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681 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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682 } |
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683 |
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684 // Getting the class of the caller frame. |
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685 // |
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686 // The call stack at this point looks something like this: |
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687 // |
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688 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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689 // [1] [ @CallerSensitive API.method ] |
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690 // [.] [ (skipped intermediate frames) ] |
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691 // [n] [ caller ] |
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692 vframeStream vfst(thread); |
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693 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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694 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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695 Method* m = vfst.method(); |
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696 assert(m != NULL, "sanity"); |
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697 switch (n) { |
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698 case 0: |
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699 // This must only be called from Reflection.getCallerClass |
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700 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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701 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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702 } |
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703 // fall-through |
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704 case 1: |
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705 // Frame 0 and 1 must be caller sensitive. |
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706 if (!m->caller_sensitive()) { |
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707 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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708 } |
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709 break; |
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710 default: |
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711 if (!m->is_ignored_by_security_stack_walk()) { |
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712 // We have reached the desired frame; return the holder class. |
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713 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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714 } |
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715 break; |
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716 } |
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717 } |
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718 return NULL; |
0 | 719 JVM_END |
720 | |
721 | |
722 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
723 JVMWrapper("JVM_FindPrimitiveClass"); | |
724 oop mirror = NULL; | |
725 BasicType t = name2type(utf); | |
726 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
727 mirror = Universe::java_mirror(t); | |
728 } | |
729 if (mirror == NULL) { | |
730 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
731 } else { | |
732 return (jclass) JNIHandles::make_local(env, mirror); | |
733 } | |
734 JVM_END | |
735 | |
736 | |
737 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
738 JVMWrapper("JVM_ResolveClass"); | |
739 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
740 JVM_END | |
741 | |
878
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742 |
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743 // Returns a class loaded by the bootstrap class loader; or null |
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744 // if not found. ClassNotFoundException is not thrown. |
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745 // |
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746 // Rationale behind JVM_FindClassFromBootLoader |
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747 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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748 // b> because of (a) java.dll has a direct dependecy on the unexported |
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749 // private symbol "_JVM_FindClassFromClassLoader@20". |
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750 // c> the launcher cannot use the private symbol as it dynamically opens |
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751 // the entry point, so if something changes, the launcher will fail |
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752 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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753 // stable exported interface. |
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754 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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755 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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756 // JVM_FindClassFromClassLoader and will not be backward compatible |
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757 // with older JDKs. |
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758 // Thus a public/stable exported entry point is the right solution, |
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759 // public here means public in linker semantics, and is exported only |
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760 // to the JDK, and is not intended to be a public API. |
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761 |
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762 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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763 const char* name)) |
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764 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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765 |
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766 // Java libraries should ensure that name is never null... |
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767 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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768 // It's impossible to create this class; the name cannot fit |
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769 // into the constant pool. |
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770 return NULL; |
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771 } |
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772 |
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773 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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774 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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775 if (k == NULL) { |
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776 return NULL; |
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777 } |
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778 |
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779 if (TraceClassResolution) { |
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780 trace_class_resolution(k); |
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781 } |
6983 | 782 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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783 JVM_END |
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784 |
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785 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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786 jboolean init, jobject loader, |
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787 jboolean throwError)) |
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788 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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789 throwError ? "error" : "exception"); |
388 | 790 // Java libraries should ensure that name is never null... |
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791 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 792 // It's impossible to create this class; the name cannot fit |
793 // into the constant pool. | |
794 if (throwError) { | |
795 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
796 } else { | |
797 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
798 } | |
799 } | |
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800 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 801 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
802 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
803 Handle(), throwError, THREAD); | |
804 | |
805 if (TraceClassResolution && result != NULL) { | |
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806 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 807 } |
808 return result; | |
0 | 809 JVM_END |
810 | |
811 | |
812 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
813 jboolean init, jclass from)) | |
814 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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815 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 816 // It's impossible to create this class; the name cannot fit |
817 // into the constant pool. | |
818 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
819 } | |
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820 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 821 oop from_class_oop = JNIHandles::resolve(from); |
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822 Klass* from_class = (from_class_oop == NULL) |
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823 ? (Klass*)NULL |
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824 : java_lang_Class::as_Klass(from_class_oop); |
0 | 825 oop class_loader = NULL; |
826 oop protection_domain = NULL; | |
827 if (from_class != NULL) { | |
6983 | 828 class_loader = from_class->class_loader(); |
829 protection_domain = from_class->protection_domain(); | |
0 | 830 } |
831 Handle h_loader(THREAD, class_loader); | |
832 Handle h_prot (THREAD, protection_domain); | |
833 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
834 h_prot, true, thread); | |
835 | |
836 if (TraceClassResolution && result != NULL) { | |
837 // this function is generally only used for class loading during verification. | |
838 ResourceMark rm; | |
839 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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840 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 841 const char * from_name = from_class->external_name(); |
0 | 842 |
843 oop mirror = JNIHandles::resolve_non_null(result); | |
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844 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 845 const char * to = to_class->external_name(); |
0 | 846 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
847 } | |
848 | |
849 return result; | |
850 JVM_END | |
851 | |
852 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
853 if (loader.is_null()) { | |
854 return; | |
855 } | |
856 | |
857 // check whether the current caller thread holds the lock or not. | |
858 // If not, increment the corresponding counter | |
859 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
860 ObjectSynchronizer::owner_self) { | |
861 counter->inc(); | |
862 } | |
863 } | |
864 | |
865 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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866 // and JVM_DefineClassWithSourceCond() |
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867 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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868 jobject loader, const jbyte *buf, |
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869 jsize len, jobject pd, const char *source, |
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870 jboolean verify, TRAPS) { |
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871 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 872 |
875
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873 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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874 JavaThread* jt = (JavaThread*) THREAD; |
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875 |
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876 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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877 ClassLoader::perf_define_appclass_selftime(), |
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878 ClassLoader::perf_define_appclasses(), |
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879 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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880 jt->get_thread_stat()->perf_timers_addr(), |
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881 PerfClassTraceTime::DEFINE_CLASS); |
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882 |
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883 if (UsePerfData) { |
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884 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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885 } |
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886 |
0 | 887 // Since exceptions can be thrown, class initialization can take place |
888 // if name is NULL no check for class name in .class stream has to be made. | |
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889 TempNewSymbol class_name = NULL; |
0 | 890 if (name != NULL) { |
891 const int str_len = (int)strlen(name); | |
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892 if (str_len > Symbol::max_length()) { |
0 | 893 // It's impossible to create this class; the name cannot fit |
894 // into the constant pool. | |
895 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
896 } | |
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897 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 898 } |
899 | |
900 ResourceMark rm(THREAD); | |
901 ClassFileStream st((u1*) buf, len, (char *)source); | |
902 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
903 if (UsePerfData) { | |
904 is_lock_held_by_thread(class_loader, | |
905 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
906 THREAD); | |
907 } | |
908 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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909 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 910 protection_domain, &st, |
973
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911 verify != 0, |
0 | 912 CHECK_NULL); |
913 | |
914 if (TraceClassResolution && k != NULL) { | |
915 trace_class_resolution(k); | |
916 } | |
917 | |
6983 | 918 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 919 } |
920 | |
921 | |
922 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
923 JVMWrapper2("JVM_DefineClass %s", name); | |
924 | |
973
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925 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 926 JVM_END |
927 | |
928 | |
929 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
930 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
931 | |
973
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932 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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933 JVM_END |
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934 |
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935 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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936 jobject loader, const jbyte *buf, |
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937 jsize len, jobject pd, |
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938 const char *source, jboolean verify)) |
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939 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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940 |
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941 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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942 JVM_END |
0 | 943 |
944 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
945 JVMWrapper("JVM_FindLoadedClass"); | |
946 ResourceMark rm(THREAD); | |
947 | |
948 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
949 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
950 | |
951 const char* str = java_lang_String::as_utf8_string(string()); | |
952 // Sanity check, don't expect null | |
953 if (str == NULL) return NULL; | |
954 | |
955 const int str_len = (int)strlen(str); | |
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956 if (str_len > Symbol::max_length()) { |
0 | 957 // It's impossible to create this class; the name cannot fit |
958 // into the constant pool. | |
959 return NULL; | |
960 } | |
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961 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 962 |
963 // Security Note: | |
964 // The Java level wrapper will perform the necessary security check allowing | |
965 // us to pass the NULL as the initiating class loader. | |
966 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
967 if (UsePerfData) { | |
968 is_lock_held_by_thread(h_loader, | |
969 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
970 THREAD); | |
971 } | |
972 | |
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973 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 974 h_loader, |
975 Handle(), | |
976 CHECK_NULL); | |
977 | |
978 return (k == NULL) ? NULL : | |
6983 | 979 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 980 JVM_END |
981 | |
982 | |
983 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
984 | |
985 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
986 assert (cls != NULL, "illegal class"); | |
987 JVMWrapper("JVM_GetClassName"); | |
988 JvmtiVMObjectAllocEventCollector oam; | |
989 ResourceMark rm(THREAD); | |
990 const char* name; | |
991 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
992 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
993 } else { | |
994 // Consider caching interned string in Klass | |
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995 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 996 assert(k->is_klass(), "just checking"); |
6983 | 997 name = k->external_name(); |
0 | 998 } |
999 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1000 return (jstring) JNIHandles::make_local(env, result); | |
1001 JVM_END | |
1002 | |
1003 | |
1004 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1005 JVMWrapper("JVM_GetClassInterfaces"); | |
1006 JvmtiVMObjectAllocEventCollector oam; | |
1007 oop mirror = JNIHandles::resolve_non_null(cls); | |
1008 | |
1009 // Special handling for primitive objects | |
1010 if (java_lang_Class::is_primitive(mirror)) { | |
1011 // Primitive objects does not have any interfaces | |
1142 | 1012 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1013 return (jobjectArray) JNIHandles::make_local(env, r); |
1014 } | |
1015 | |
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1016 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1017 // Figure size of result array |
1018 int size; | |
1019 if (klass->oop_is_instance()) { | |
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1020 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1021 } else { |
1022 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1023 size = 2; | |
1024 } | |
1025 | |
1026 // Allocate result array | |
1142 | 1027 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1028 objArrayHandle result (THREAD, r); |
1029 // Fill in result | |
1030 if (klass->oop_is_instance()) { | |
1031 // Regular instance klass, fill in all local interfaces | |
1032 for (int index = 0; index < size; index++) { | |
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1033 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1034 result->obj_at_put(index, k->java_mirror()); |
0 | 1035 } |
1036 } else { | |
1037 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1038 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1039 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1040 } |
1041 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1042 JVM_END | |
1043 | |
1044 | |
1045 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1046 JVMWrapper("JVM_GetClassLoader"); | |
1047 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1048 return NULL; | |
1049 } | |
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1050 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1051 oop loader = k->class_loader(); |
0 | 1052 return JNIHandles::make_local(env, loader); |
1053 JVM_END | |
1054 | |
1055 | |
1056 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1057 JVMWrapper("JVM_IsInterface"); | |
1058 oop mirror = JNIHandles::resolve_non_null(cls); | |
1059 if (java_lang_Class::is_primitive(mirror)) { | |
1060 return JNI_FALSE; | |
1061 } | |
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1062 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1063 jboolean result = k->is_interface(); |
1064 assert(!result || k->oop_is_instance(), | |
0 | 1065 "all interfaces are instance types"); |
1066 // The compiler intrinsic for isInterface tests the | |
1067 // Klass::_access_flags bits in the same way. | |
1068 return result; | |
1069 JVM_END | |
1070 | |
1071 | |
1072 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1073 JVMWrapper("JVM_GetClassSigners"); | |
1074 JvmtiVMObjectAllocEventCollector oam; | |
1075 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1076 // There are no signers for primitive types | |
1077 return NULL; | |
1078 } | |
1079 | |
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1080 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1081 |
1082 // If there are no signers set in the class, or if the class | |
1083 // is an array, return NULL. | |
1084 if (signers == NULL) return NULL; | |
1085 | |
1086 // copy of the signers array | |
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1087 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1088 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1089 for (int index = 0; index < signers->length(); index++) { | |
1090 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1091 } | |
1092 | |
1093 // return the copy | |
1094 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1095 JVM_END | |
1096 | |
1097 | |
1098 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1099 JVMWrapper("JVM_SetClassSigners"); | |
1100 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1101 // This call is ignored for primitive types and arrays. | |
1102 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1103 // be called with an array. Only the bootstrap loader creates arrays. | |
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1104 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1105 if (k->oop_is_instance()) { |
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1106 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1107 } |
1108 } | |
1109 JVM_END | |
1110 | |
1111 | |
1112 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1113 JVMWrapper("JVM_GetProtectionDomain"); | |
1114 if (JNIHandles::resolve(cls) == NULL) { | |
1115 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1116 } | |
1117 | |
1118 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1119 // Primitive types does not have a protection domain. | |
1120 return NULL; | |
1121 } | |
1122 | |
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1123 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1124 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1125 JVM_END |
1126 | |
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1127 // Preserved in Graal repo so that linking against a JDK7 libjava.so works |
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1128 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) |
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1129 JVMWrapper("JVM_SetProtectionDomain"); |
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1130 |
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1131 ResourceMark rm(THREAD); |
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1132 const char* msg = "Obsolete JVM_SetProtectionDomain function called"; |
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1133 size_t buflen = strlen(msg); |
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1134 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
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1135 jio_snprintf(buf, buflen, msg); |
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1136 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
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1137 JVM_END |
0 | 1138 |
11010 | 1139 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1140 // If there is a security manager and protection domain, check the access | |
1141 // in the protection domain, otherwise it is authorized. | |
1142 if (java_lang_System::has_security_manager()) { | |
1143 | |
1144 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1145 // this context to revert to older behavior. | |
1146 // In this case the isAuthorized field in AccessControlContext is also not | |
1147 // present. | |
1148 if (Universe::protection_domain_implies_method() == NULL) { | |
1149 return true; | |
1150 } | |
1151 | |
1152 // Whitelist certain access control contexts | |
1153 if (java_security_AccessControlContext::is_authorized(context)) { | |
1154 return true; | |
1155 } | |
1156 | |
1157 oop prot = klass->protection_domain(); | |
1158 if (prot != NULL) { | |
1159 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1160 // in the new wrapper. | |
1161 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1162 Handle h_prot(THREAD, prot); | |
1163 JavaValue result(T_BOOLEAN); | |
1164 JavaCallArguments args(h_prot); | |
1165 JavaCalls::call(&result, m, &args, CHECK_false); | |
1166 return (result.get_jboolean() != 0); | |
1167 } | |
1168 } | |
1169 return true; | |
1170 } | |
1171 | |
1172 // Create an AccessControlContext with a protection domain with null codesource | |
1173 // and null permissions - which gives no permissions. | |
1174 oop create_dummy_access_control_context(TRAPS) { | |
1175 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1176 // new ProtectionDomain(null,null); | |
1177 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1178 Handle null_pd(THREAD, null_protection_domain); | |
1179 | |
1180 // new ProtectionDomain[] {pd}; | |
1181 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1182 context->obj_at_put(0, null_pd()); | |
1183 | |
1184 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1185 objArrayHandle h_context(THREAD, context); | |
1186 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1187 return result; | |
1188 } | |
0 | 1189 |
1190 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1191 JVMWrapper("JVM_DoPrivileged"); | |
1192 | |
1193 if (action == NULL) { | |
1194 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1195 } | |
1196 | |
11010 | 1197 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1198 vframeStream vfst(thread); | |
1199 vfst.security_get_caller_frame(1); | |
1200 | |
1201 if (vfst.at_end()) { | |
1202 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1203 } | |
1204 | |
1205 Method* method = vfst.method(); | |
1206 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1207 | |
1208 // Check that action object understands "Object run()" | |
1209 Handle h_context; | |
1210 if (context != NULL) { | |
1211 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1212 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1213 if (!authorized) { | |
1214 // Create an unprivileged access control object and call it's run function | |
1215 // instead. | |
1216 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1217 h_context = Handle(THREAD, noprivs); | |
1218 } | |
1219 } | |
0 | 1220 |
1221 // Check that action object understands "Object run()" | |
1222 Handle object (THREAD, JNIHandles::resolve(action)); | |
1223 | |
1224 // get run() method | |
6983 | 1225 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1226 vmSymbols::run_method_name(), |
1227 vmSymbols::void_object_signature()); | |
1228 methodHandle m (THREAD, m_oop); | |
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1229 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1230 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1231 } | |
1232 | |
11010 | 1233 // Stack allocated list of privileged stack elements |
1234 PrivilegedElement pi; | |
0 | 1235 if (!vfst.at_end()) { |
11010 | 1236 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1237 thread->set_privileged_stack_top(&pi); |
1238 } | |
1239 | |
1240 | |
1241 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1242 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1243 Handle pending_exception; | |
1244 JavaValue result(T_OBJECT); | |
1245 JavaCallArguments args(object); | |
1246 JavaCalls::call(&result, m, &args, THREAD); | |
1247 | |
1248 // done with action, remove ourselves from the list | |
1249 if (!vfst.at_end()) { | |
1250 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1251 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1252 } | |
1253 | |
1254 if (HAS_PENDING_EXCEPTION) { | |
1255 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1256 CLEAR_PENDING_EXCEPTION; | |
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1257 // JVMTI has already reported the pending exception |
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1258 // JVMTI internal flag reset is needed in order to report PrivilegedActionException |
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1259 if (THREAD->is_Java_thread()) { |
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1260 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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1261 } |
1142 | 1262 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1263 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1264 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1265 JavaCallArguments args(pending_exception); | |
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1266 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1267 vmSymbols::exception_void_signature(), |
0 | 1268 &args); |
1269 } | |
1270 } | |
1271 | |
1272 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1273 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1274 JVM_END | |
1275 | |
1276 | |
1277 // Returns the inherited_access_control_context field of the running thread. | |
1278 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1279 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1280 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1281 return JNIHandles::make_local(env, result); | |
1282 JVM_END | |
1283 | |
1284 class RegisterArrayForGC { | |
1285 private: | |
1286 JavaThread *_thread; | |
1287 public: | |
1288 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1289 _thread = thread; | |
1290 _thread->register_array_for_gc(array); | |
1291 } | |
1292 | |
1293 ~RegisterArrayForGC() { | |
1294 _thread->register_array_for_gc(NULL); | |
1295 } | |
1296 }; | |
1297 | |
1298 | |
1299 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1300 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1301 if (!UsePrivilegedStack) return NULL; | |
1302 | |
1303 ResourceMark rm(THREAD); | |
1304 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1305 JvmtiVMObjectAllocEventCollector oam; | |
1306 | |
1307 // count the protection domains on the execution stack. We collapse | |
1308 // duplicate consecutive protection domains into a single one, as | |
1309 // well as stopping when we hit a privileged frame. | |
1310 | |
1311 // Use vframeStream to iterate through Java frames | |
1312 vframeStream vfst(thread); | |
1313 | |
1314 oop previous_protection_domain = NULL; | |
1315 Handle privileged_context(thread, NULL); | |
1316 bool is_privileged = false; | |
1317 oop protection_domain = NULL; | |
1318 | |
1319 for(; !vfst.at_end(); vfst.next()) { | |
1320 // get method of frame | |
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1321 Method* method = vfst.method(); |
0 | 1322 intptr_t* frame_id = vfst.frame_id(); |
1323 | |
1324 // check the privileged frames to see if we have a match | |
1325 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1326 // this frame is privileged | |
1327 is_privileged = true; | |
1328 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1329 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1330 } else { | |
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1331 protection_domain = method->method_holder()->protection_domain(); |
0 | 1332 } |
1333 | |
1334 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1335 local_array->push(protection_domain); | |
1336 previous_protection_domain = protection_domain; | |
1337 } | |
1338 | |
1339 if (is_privileged) break; | |
1340 } | |
1341 | |
1342 | |
1343 // either all the domains on the stack were system domains, or | |
1344 // we had a privileged system domain | |
1345 if (local_array->is_empty()) { | |
1346 if (is_privileged && privileged_context.is_null()) return NULL; | |
1347 | |
1348 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1349 return JNIHandles::make_local(env, result); | |
1350 } | |
1351 | |
1352 // the resource area must be registered in case of a gc | |
1353 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1354 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1355 local_array->length(), CHECK_NULL); |
1356 objArrayHandle h_context(thread, context); | |
1357 for (int index = 0; index < local_array->length(); index++) { | |
1358 h_context->obj_at_put(index, local_array->at(index)); | |
1359 } | |
1360 | |
1361 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1362 | |
1363 return JNIHandles::make_local(env, result); | |
1364 JVM_END | |
1365 | |
1366 | |
1367 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1368 JVMWrapper("JVM_IsArrayClass"); | |
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1369 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1370 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1371 JVM_END |
1372 | |
1373 | |
1374 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1375 JVMWrapper("JVM_IsPrimitiveClass"); | |
1376 oop mirror = JNIHandles::resolve_non_null(cls); | |
1377 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1378 JVM_END | |
1379 | |
1380 | |
1381 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1382 JVMWrapper("JVM_GetComponentType"); | |
1383 oop mirror = JNIHandles::resolve_non_null(cls); | |
1384 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1385 return (jclass) JNIHandles::make_local(env, result); | |
1386 JVM_END | |
1387 | |
1388 | |
1389 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1390 JVMWrapper("JVM_GetClassModifiers"); | |
1391 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1392 // Primitive type | |
1393 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1394 } | |
1395 | |
6983 | 1396 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1397 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1398 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1399 return k->modifier_flags(); | |
1400 JVM_END | |
1401 | |
1402 | |
1403 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1404 | |
1405 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1406 JvmtiVMObjectAllocEventCollector oam; | |
1407 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1408 // of an InstanceKlass |
0 | 1409 |
1410 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1411 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1412 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1413 return (jobjectArray)JNIHandles::make_local(env, result); |
1414 } | |
1415 | |
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1416 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1417 InnerClassesIterator iter(k); |
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1418 |
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1419 if (iter.length() == 0) { |
0 | 1420 // Neither an inner nor outer class |
1142 | 1421 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1422 return (jobjectArray)JNIHandles::make_local(env, result); |
1423 } | |
1424 | |
1425 // find inner class info | |
1426 constantPoolHandle cp(thread, k->constants()); | |
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1427 int length = iter.length(); |
0 | 1428 |
1429 // Allocate temp. result array | |
1142 | 1430 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1431 objArrayHandle result (THREAD, r); |
1432 int members = 0; | |
1433 | |
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1434 for (; !iter.done(); iter.next()) { |
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1435 int ioff = iter.inner_class_info_index(); |
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1436 int ooff = iter.outer_class_info_index(); |
0 | 1437 |
1438 if (ioff != 0 && ooff != 0) { | |
1439 // Check to see if the name matches the class we're looking for | |
1440 // before attempting to find the class. | |
1441 if (cp->klass_name_at_matches(k, ooff)) { | |
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1442 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1443 if (outer_klass == k()) { |
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1444 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1445 instanceKlassHandle inner_klass (THREAD, ik); |
1446 | |
1447 // Throws an exception if outer klass has not declared k as | |
1448 // an inner klass | |
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1449 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1450 |
1451 result->obj_at_put(members, inner_klass->java_mirror()); | |
1452 members++; | |
1453 } | |
1454 } | |
1455 } | |
1456 } | |
1457 | |
1458 if (members != length) { | |
1459 // Return array of right length | |
1142 | 1460 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1461 for(int i = 0; i < members; i++) { |
1462 res->obj_at_put(i, result->obj_at(i)); | |
1463 } | |
1464 return (jobjectArray)JNIHandles::make_local(env, res); | |
1465 } | |
1466 | |
1467 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1468 JVM_END | |
1469 | |
1470 | |
1471 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1472 { |
0 | 1473 // ofClass is a reference to a java_lang_Class object. |
1474 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1475 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1476 return NULL; |
1477 } | |
1478 | |
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1479 bool inner_is_member = false; |
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1480 Klass* outer_klass |
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1481 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1482 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1483 if (outer_klass == NULL) return NULL; // already a top-level class |
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1484 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1485 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1486 } |
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1487 JVM_END |
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1488 |
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1489 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1490 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1491 bool* inner_is_member, |
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1492 TRAPS) { |
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1493 Thread* thread = THREAD; |
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1494 InnerClassesIterator iter(k); |
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1495 if (iter.length() == 0) { |
0 | 1496 // No inner class info => no declaring class |
1497 return NULL; | |
1498 } | |
1499 | |
1500 constantPoolHandle i_cp(thread, k->constants()); | |
1501 | |
1502 bool found = false; | |
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1503 Klass* ok; |
0 | 1504 instanceKlassHandle outer_klass; |
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1505 *inner_is_member = false; |
0 | 1506 |
1507 // Find inner_klass attribute | |
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1508 for (; !iter.done() && !found; iter.next()) { |
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1509 int ioff = iter.inner_class_info_index(); |
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1510 int ooff = iter.outer_class_info_index(); |
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1511 int noff = iter.inner_name_index(); |
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1512 if (ioff != 0) { |
0 | 1513 // Check to see if the name matches the class we're looking for |
1514 // before attempting to find the class. | |
1515 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1516 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1517 found = (k() == inner_klass); |
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1518 if (found && ooff != 0) { |
0 | 1519 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1520 outer_klass = instanceKlassHandle(thread, ok); | |
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1521 *inner_is_member = true; |
0 | 1522 } |
1523 } | |
1524 } | |
1525 } | |
1526 | |
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1527 if (found && outer_klass.is_null()) { |
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1528 // It may be anonymous; try for that. |
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1529 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1530 if (encl_method_class_idx != 0) { |
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1531 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1532 outer_klass = instanceKlassHandle(thread, ok); |
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1533 *inner_is_member = false; |
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1534 } |
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1535 } |
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1536 |
0 | 1537 // If no inner class attribute found for this class. |
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1538 if (outer_klass.is_null()) return NULL; |
0 | 1539 |
1540 // Throws an exception if outer klass has not declared k as an inner klass | |
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1541 // We need evidence that each klass knows about the other, or else |
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1542 // the system could allow a spoof of an inner class to gain access rights. |
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1543 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1544 return outer_klass(); |
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1545 } |
0 | 1546 |
1547 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1548 assert (cls != NULL, "illegal class"); | |
1549 JVMWrapper("JVM_GetClassSignature"); | |
1550 JvmtiVMObjectAllocEventCollector oam; | |
1551 ResourceMark rm(THREAD); | |
1552 // Return null for arrays and primatives | |
1553 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1554 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1555 if (k->oop_is_instance()) { |
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1556 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1557 if (sym == NULL) return NULL; |
0 | 1558 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1559 return (jstring) JNIHandles::make_local(env, str()); | |
1560 } | |
1561 } | |
1562 return NULL; | |
1563 JVM_END | |
1564 | |
1565 | |
1566 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1567 assert (cls != NULL, "illegal class"); | |
1568 JVMWrapper("JVM_GetClassAnnotations"); | |
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1569 |
0 | 1570 // Return null for arrays and primitives |
1571 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1572 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1573 if (k->oop_is_instance()) { |
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1574 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1575 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1576 } |
1577 } | |
1578 return NULL; | |
1579 JVM_END | |
1580 | |
1581 | |
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1582 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1583 // some of this code was adapted from from jni_FromReflectedField |
1584 | |
1585 oop reflected = JNIHandles::resolve_non_null(field); | |
1586 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1587 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1588 int slot = java_lang_reflect_Field::slot(reflected); |
1589 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1590 | |
1591 KlassHandle kh(THREAD, k); | |
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1592 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1593 |
1594 if (modifiers & JVM_ACC_STATIC) { | |
1595 // for static fields we only look in the current class | |
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1596 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1597 assert(false, "cannot find static field"); |
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1598 return false; |
0 | 1599 } |
1600 } else { | |
1601 // for instance fields we start with the current class and work | |
1602 // our way up through the superclass chain | |
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1603 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1604 assert(false, "cannot find instance field"); |
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1605 return false; |
0 | 1606 } |
1607 } | |
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1608 return true; |
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1609 } |
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1610 |
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1611 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1612 // field is a handle to a java.lang.reflect.Field object |
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1613 assert(field != NULL, "illegal field"); |
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1614 JVMWrapper("JVM_GetFieldAnnotations"); |
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1615 |
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1616 fieldDescriptor fd; |
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1617 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1618 if (!gotFd) { |
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1619 return NULL; |
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1620 } |
0 | 1621 |
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1622 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1623 JVM_END |
1624 | |
1625 | |
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1626 static Method* jvm_get_method_common(jobject method) { |
0 | 1627 // some of this code was adapted from from jni_FromReflectedMethod |
1628 | |
1629 oop reflected = JNIHandles::resolve_non_null(method); | |
1630 oop mirror = NULL; | |
1631 int slot = 0; | |
1632 | |
1142 | 1633 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1634 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1635 slot = java_lang_reflect_Constructor::slot(reflected); | |
1636 } else { | |
1142 | 1637 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1638 "wrong type"); |
1639 mirror = java_lang_reflect_Method::clazz(reflected); | |
1640 slot = java_lang_reflect_Method::slot(reflected); | |
1641 } | |
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1642 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1643 |
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1644 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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1645 assert(m != NULL, "cannot find method"); |
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1646 return m; // caller has to deal with NULL in product mode |
0 | 1647 } |
1648 | |
1649 | |
1650 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1651 JVMWrapper("JVM_GetMethodAnnotations"); | |
1652 | |
1653 // method is a handle to a java.lang.reflect.Method object | |
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1654 Method* m = jvm_get_method_common(method); |
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1655 if (m == NULL) { |
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|
1656 return NULL; |
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|
1657 } |
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1658 |
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1659 return (jbyteArray) JNIHandles::make_local(env, |
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1660 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1661 JVM_END |
1662 | |
1663 | |
1664 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1665 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1666 | |
1667 // method is a handle to a java.lang.reflect.Method object | |
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1668 Method* m = jvm_get_method_common(method); |
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1669 if (m == NULL) { |
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|
1670 return NULL; |
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|
1671 } |
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1672 |
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1673 return (jbyteArray) JNIHandles::make_local(env, |
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1674 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1675 JVM_END |
1676 | |
1677 | |
1678 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1679 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1680 | |
1681 // method is a handle to a java.lang.reflect.Method object | |
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1682 Method* m = jvm_get_method_common(method); |
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1683 if (m == NULL) { |
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|
1684 return NULL; |
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|
1685 } |
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|
1686 |
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1687 return (jbyteArray) JNIHandles::make_local(env, |
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1688 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1689 JVM_END |
1690 | |
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1691 /* Type use annotations support (JDK 1.8) */ |
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1692 |
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1693 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1694 assert (cls != NULL, "illegal class"); |
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|
1695 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1696 ResourceMark rm(THREAD); |
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|
1697 // Return null for arrays and primitives |
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|
1698 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1699 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1700 if (k->oop_is_instance()) { |
8031 | 1701 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1702 if (type_annotations != NULL) { |
8031 | 1703 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
7611
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1704 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1705 } |
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1706 } |
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|
1707 } |
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|
1708 return NULL; |
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|
1709 JVM_END |
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1710 |
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1711 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1712 assert (method != NULL, "illegal method"); |
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|
1713 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1714 |
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1715 // method is a handle to a java.lang.reflect.Method object |
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1716 Method* m = jvm_get_method_common(method); |
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1717 if (m == NULL) { |
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|
1718 return NULL; |
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|
1719 } |
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|
1720 |
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1721 AnnotationArray* type_annotations = m->type_annotations(); |
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1722 if (type_annotations != NULL) { |
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1723 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1724 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1725 } |
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|
1726 |
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|
1727 return NULL; |
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|
1728 JVM_END |
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|
1729 |
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|
1730 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1731 assert (field != NULL, "illegal field"); |
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|
1732 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1733 |
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|
1734 fieldDescriptor fd; |
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|
1735 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1736 if (!gotFd) { |
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|
1737 return NULL; |
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|
1738 } |
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|
1739 |
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|
1740 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1741 JVM_END |
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|
1742 |
7588
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1743 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1744 if (!cp->is_within_bounds(index)) { |
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|
1745 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1746 } |
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|
1747 } |
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1748 |
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1749 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1750 { |
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1751 JVMWrapper("JVM_GetMethodParameters"); |
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1752 // method is a handle to a java.lang.reflect.Method object |
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1753 Method* method_ptr = jvm_get_method_common(method); |
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1754 methodHandle mh (THREAD, method_ptr); |
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1755 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1756 const int num_params = mh->method_parameters_length(); |
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1757 |
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1758 if (0 != num_params) { |
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1759 // make sure all the symbols are properly formatted |
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1760 for (int i = 0; i < num_params; i++) { |
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1761 MethodParametersElement* params = mh->method_parameters_start(); |
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1762 int index = params[i].name_cp_index; |
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1763 bounds_check(mh->constants(), index, CHECK_NULL); |
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1764 |
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1765 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1766 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1767 "Wrong type at constant pool index"); |
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1768 } |
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1769 |
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1770 } |
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1771 |
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1772 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1773 objArrayHandle result (THREAD, result_oop); |
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1774 |
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1775 for (int i = 0; i < num_params; i++) { |
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1776 MethodParametersElement* params = mh->method_parameters_start(); |
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1777 // For a 0 index, give a NULL symbol |
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1778 Symbol* sym = 0 != params[i].name_cp_index ? |
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1779 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1780 int flags = params[i].flags; |
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1781 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1782 flags, CHECK_NULL); |
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1783 result->obj_at_put(i, param); |
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1784 } |
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1785 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1786 } else { |
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1787 return (jobjectArray)NULL; |
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1788 } |
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1789 } |
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1790 JVM_END |
0 | 1791 |
1792 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1793 | |
1794 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1795 { | |
1796 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1797 JvmtiVMObjectAllocEventCollector oam; | |
1798 | |
1799 // Exclude primitive types and array types | |
1800 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1801 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1802 // Return empty array |
1142 | 1803 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1804 return (jobjectArray) JNIHandles::make_local(env, res); |
1805 } | |
1806 | |
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1807 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1808 constantPoolHandle cp(THREAD, k->constants()); |
1809 | |
1810 // Ensure class is linked | |
1811 k->link_class(CHECK_NULL); | |
1812 | |
1813 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1814 bool skip_backtrace = false; | |
1815 | |
1816 // Allocate result | |
1817 int num_fields; | |
1818 | |
1819 if (publicOnly) { | |
1820 num_fields = 0; | |
3938 | 1821 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1822 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1823 } |
1824 } else { | |
3938 | 1825 num_fields = k->java_fields_count(); |
0 | 1826 |
1142 | 1827 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1828 num_fields--; |
1829 skip_backtrace = true; | |
1830 } | |
1831 } | |
1832 | |
1142 | 1833 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1834 objArrayHandle result (THREAD, r); |
1835 | |
1836 int out_idx = 0; | |
1837 fieldDescriptor fd; | |
3938 | 1838 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1839 if (skip_backtrace) { |
1840 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1841 int offset = fs.offset(); |
0 | 1842 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1843 } | |
1844 | |
3938 | 1845 if (!publicOnly || fs.access_flags().is_public()) { |
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1846 fd.reinitialize(k(), fs.index()); |
0 | 1847 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1848 result->obj_at_put(out_idx, field); | |
1849 ++out_idx; | |
1850 } | |
1851 } | |
1852 assert(out_idx == num_fields, "just checking"); | |
1853 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1854 } | |
1855 JVM_END | |
1856 | |
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1857 static bool select_method(methodHandle method, bool want_constructor) { |
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1858 if (want_constructor) { |
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1859 return (method->is_initializer() && !method->is_static()); |
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1860 } else { |
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1861 return (!method->is_initializer() && !method->is_overpass()); |
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1862 } |
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1863 } |
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1864 |
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1865 static jobjectArray get_class_declared_methods_helper( |
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1866 JNIEnv *env, |
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1867 jclass ofClass, jboolean publicOnly, |
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1868 bool want_constructor, |
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1869 Klass* klass, TRAPS) { |
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1870 |
0 | 1871 JvmtiVMObjectAllocEventCollector oam; |
1872 | |
1873 // Exclude primitive types and array types | |
1874 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1875 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1876 // Return empty array |
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1877 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1878 return (jobjectArray) JNIHandles::make_local(env, res); |
1879 } | |
1880 | |
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1881 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1882 |
1883 // Ensure class is linked | |
1884 k->link_class(CHECK_NULL); | |
1885 | |
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1886 Array<Method*>* methods = k->methods(); |
0 | 1887 int methods_length = methods->length(); |
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1888 |
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1889 // Save original method_idnum in case of redefinition, which can change |
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1890 // the idnum of obsolete methods. The new method will have the same idnum |
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1891 // but if we refresh the methods array, the counts will be wrong. |
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1892 ResourceMark rm(THREAD); |
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1893 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1894 int num_methods = 0; |
1895 | |
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1896 for (int i = 0; i < methods_length; i++) { |
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1897 methodHandle method(THREAD, methods->at(i)); |
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1898 if (select_method(method, want_constructor)) { |
0 | 1899 if (!publicOnly || method->is_public()) { |
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1900 idnums->push(method->method_idnum()); |
0 | 1901 ++num_methods; |
1902 } | |
1903 } | |
1904 } | |
1905 | |
1906 // Allocate result | |
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1907 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1908 objArrayHandle result (THREAD, r); |
1909 | |
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1910 // Now just put the methods that we selected above, but go by their idnum |
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1911 // in case of redefinition. The methods can be redefined at any safepoint, |
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1912 // so above when allocating the oop array and below when creating reflect |
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1913 // objects. |
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1914 for (int i = 0; i < num_methods; i++) { |
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1915 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1916 if (method.is_null()) { |
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1917 // Method may have been deleted and seems this API can handle null |
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1918 // Otherwise should probably put a method that throws NSME |
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1919 result->obj_at_put(i, NULL); |
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1920 } else { |
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1921 oop m; |
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1922 if (want_constructor) { |
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1923 m = Reflection::new_constructor(method, CHECK_NULL); |
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1924 } else { |
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1925 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1926 } |
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1927 result->obj_at_put(i, m); |
0 | 1928 } |
1929 } | |
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1930 |
0 | 1931 return (jobjectArray) JNIHandles::make_local(env, result()); |
1932 } | |
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1933 |
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1934 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1935 { |
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1936 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1937 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1938 /*want_constructor*/ false, |
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1939 SystemDictionary::reflect_Method_klass(), THREAD); |
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1940 } |
0 | 1941 JVM_END |
1942 | |
1943 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1944 { | |
1945 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1946 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1947 /*want_constructor*/ true, |
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1948 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1949 } |
1950 JVM_END | |
1951 | |
1952 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1953 { | |
1954 JVMWrapper("JVM_GetClassAccessFlags"); | |
1955 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1956 // Primitive type | |
1957 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1958 } | |
1959 | |
6983 | 1960 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1961 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1962 } | |
1963 JVM_END | |
1964 | |
1965 | |
1966 // Constant pool access ////////////////////////////////////////////////////////// | |
1967 | |
1968 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1969 { | |
1970 JVMWrapper("JVM_GetClassConstantPool"); | |
1971 JvmtiVMObjectAllocEventCollector oam; | |
1972 | |
1973 // Return null for primitives and arrays | |
1974 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1975 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1976 if (k->oop_is_instance()) { |
0 | 1977 instanceKlassHandle k_h(THREAD, k); |
1978 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1979 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1980 return JNIHandles::make_local(jcp()); |
1981 } | |
1982 } | |
1983 return NULL; | |
1984 } | |
1985 JVM_END | |
1986 | |
1987 | |
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1988 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1989 { |
1990 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1991 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1992 return cp->length(); |
1993 } | |
1994 JVM_END | |
1995 | |
1996 | |
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1997 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1998 { |
1999 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2000 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2001 bounds_check(cp, index, CHECK_NULL); |
2002 constantTag tag = cp->tag_at(index); | |
2003 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2004 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2005 } | |
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2006 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2007 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2008 } |
2009 JVM_END | |
2010 | |
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2011 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2012 { |
2013 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2014 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2015 bounds_check(cp, index, CHECK_NULL); |
2016 constantTag tag = cp->tag_at(index); | |
2017 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2018 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2019 } | |
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2020 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2021 if (k == NULL) return NULL; |
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2022 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2023 } |
2024 JVM_END | |
2025 | |
2026 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2027 constantTag tag = cp->tag_at(index); | |
2028 if (!tag.is_method() && !tag.is_interface_method()) { | |
2029 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2030 } | |
2031 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2032 Klass* k_o; |
0 | 2033 if (force_resolution) { |
2034 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2035 } else { | |
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2036 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2037 if (k_o == NULL) return NULL; |
2038 } | |
2039 instanceKlassHandle k(THREAD, k_o); | |
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2040 Symbol* name = cp->uncached_name_ref_at(index); |
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2041 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2042 methodHandle m (THREAD, k->find_method(name, sig)); |
2043 if (m.is_null()) { | |
2044 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2045 } | |
2046 oop method; | |
2047 if (!m->is_initializer() || m->is_static()) { | |
2048 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2049 } else { | |
2050 method = Reflection::new_constructor(m, CHECK_NULL); | |
2051 } | |
2052 return JNIHandles::make_local(method); | |
2053 } | |
2054 | |
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2055 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2056 { |
2057 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2058 JvmtiVMObjectAllocEventCollector oam; | |
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2059 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2060 bounds_check(cp, index, CHECK_NULL); |
2061 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2062 return res; | |
2063 } | |
2064 JVM_END | |
2065 | |
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2066 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2067 { |
2068 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2069 JvmtiVMObjectAllocEventCollector oam; | |
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2070 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2071 bounds_check(cp, index, CHECK_NULL); |
2072 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2073 return res; | |
2074 } | |
2075 JVM_END | |
2076 | |
2077 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2078 constantTag tag = cp->tag_at(index); | |
2079 if (!tag.is_field()) { | |
2080 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2081 } | |
2082 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2083 Klass* k_o; |
0 | 2084 if (force_resolution) { |
2085 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2086 } else { | |
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2087 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2088 if (k_o == NULL) return NULL; |
2089 } | |
2090 instanceKlassHandle k(THREAD, k_o); | |
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2091 Symbol* name = cp->uncached_name_ref_at(index); |
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2092 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2093 fieldDescriptor fd; |
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2094 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2095 if (target_klass == NULL) { |
2096 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2097 } | |
2098 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2099 return JNIHandles::make_local(field); | |
2100 } | |
2101 | |
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2102 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2103 { |
2104 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2105 JvmtiVMObjectAllocEventCollector oam; | |
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2106 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2107 bounds_check(cp, index, CHECK_NULL); |
2108 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2109 return res; | |
2110 } | |
2111 JVM_END | |
2112 | |
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2113 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2114 { |
2115 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2116 JvmtiVMObjectAllocEventCollector oam; | |
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2117 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2118 bounds_check(cp, index, CHECK_NULL); |
2119 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2120 return res; | |
2121 } | |
2122 JVM_END | |
2123 | |
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2124 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2125 { |
2126 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2127 JvmtiVMObjectAllocEventCollector oam; | |
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2128 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2129 bounds_check(cp, index, CHECK_NULL); |
2130 constantTag tag = cp->tag_at(index); | |
2131 if (!tag.is_field_or_method()) { | |
2132 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2133 } | |
2134 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2135 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2136 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2137 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2138 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2139 objArrayHandle dest(THREAD, dest_o); |
2140 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2141 dest->obj_at_put(0, str()); | |
2142 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2143 dest->obj_at_put(1, str()); | |
2144 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2145 dest->obj_at_put(2, str()); | |
2146 return (jobjectArray) JNIHandles::make_local(dest()); | |
2147 } | |
2148 JVM_END | |
2149 | |
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2150 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2151 { |
2152 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2153 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2154 bounds_check(cp, index, CHECK_0); |
2155 constantTag tag = cp->tag_at(index); | |
2156 if (!tag.is_int()) { | |
2157 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2158 } | |
2159 return cp->int_at(index); | |
2160 } | |
2161 JVM_END | |
2162 | |
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2163 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2164 { |
2165 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2166 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2167 bounds_check(cp, index, CHECK_(0L)); |
2168 constantTag tag = cp->tag_at(index); | |
2169 if (!tag.is_long()) { | |
2170 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2171 } | |
2172 return cp->long_at(index); | |
2173 } | |
2174 JVM_END | |
2175 | |
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2176 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2177 { |
2178 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2179 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2180 bounds_check(cp, index, CHECK_(0.0f)); |
2181 constantTag tag = cp->tag_at(index); | |
2182 if (!tag.is_float()) { | |
2183 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2184 } | |
2185 return cp->float_at(index); | |
2186 } | |
2187 JVM_END | |
2188 | |
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2189 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2190 { |
2191 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2192 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2193 bounds_check(cp, index, CHECK_(0.0)); |
2194 constantTag tag = cp->tag_at(index); | |
2195 if (!tag.is_double()) { | |
2196 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2197 } | |
2198 return cp->double_at(index); | |
2199 } | |
2200 JVM_END | |
2201 | |
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2202 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2203 { |
2204 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2205 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2206 bounds_check(cp, index, CHECK_NULL); |
2207 constantTag tag = cp->tag_at(index); | |
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2208 if (!tag.is_string()) { |
0 | 2209 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2210 } | |
2211 oop str = cp->string_at(index, CHECK_NULL); | |
2212 return (jstring) JNIHandles::make_local(str); | |
2213 } | |
2214 JVM_END | |
2215 | |
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2216 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2217 { |
2218 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2219 JvmtiVMObjectAllocEventCollector oam; | |
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2220 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2221 bounds_check(cp, index, CHECK_NULL); |
2222 constantTag tag = cp->tag_at(index); | |
2223 if (!tag.is_symbol()) { | |
2224 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2225 } | |
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2226 Symbol* sym = cp->symbol_at(index); |
0 | 2227 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2228 return (jstring) JNIHandles::make_local(str()); | |
2229 } | |
2230 JVM_END | |
2231 | |
2232 | |
2233 // Assertion support. ////////////////////////////////////////////////////////// | |
2234 | |
2235 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2236 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2237 assert(cls != NULL, "bad class"); | |
2238 | |
2239 oop r = JNIHandles::resolve(cls); | |
2240 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2241 if (java_lang_Class::is_primitive(r)) return false; | |
2242 | |
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2243 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2244 assert(k->oop_is_instance(), "must be an instance klass"); |
2245 if (! k->oop_is_instance()) return false; | |
0 | 2246 |
2247 ResourceMark rm(THREAD); | |
6983 | 2248 const char* name = k->name()->as_C_string(); |
2249 bool system_class = k->class_loader() == NULL; | |
0 | 2250 return JavaAssertions::enabled(name, system_class); |
2251 | |
2252 JVM_END | |
2253 | |
2254 | |
2255 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2256 // command-line assertion arguments (i.e., -ea, -da). | |
2257 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2258 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2259 JvmtiVMObjectAllocEventCollector oam; | |
2260 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2261 return JNIHandles::make_local(env, asd); | |
2262 JVM_END | |
2263 | |
2264 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2265 | |
2266 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2267 | |
2268 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2269 // All functions from this section should call the jvmtiThreadSate function: | |
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2270 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2271 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2272 // was invoked in the middle of the class redefinition. |
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2273 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2274 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2275 | |
2276 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2277 JVMWrapper("JVM_GetClassNameUTF"); | |
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2278 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2279 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2280 return k->name()->as_utf8(); |
0 | 2281 JVM_END |
2282 | |
2283 | |
2284 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2285 JVMWrapper("JVM_GetClassCPTypes"); | |
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2286 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2287 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2288 // types will have length zero if this is not an InstanceKlass |
0 | 2289 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2290 if (k->oop_is_instance()) { |
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2291 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2292 for (int index = cp->length() - 1; index >= 0; index--) { |
2293 constantTag tag = cp->tag_at(index); | |
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2294 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2295 } |
2296 } | |
2297 JVM_END | |
2298 | |
2299 | |
2300 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2301 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2302 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2303 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2304 if (!k->oop_is_instance()) |
0 | 2305 return 0; |
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2306 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2307 JVM_END |
2308 | |
2309 | |
2310 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2311 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2312 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2313 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2314 if (!k->oop_is_instance()) |
0 | 2315 return 0; |
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2316 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2317 JVM_END |
2318 | |
2319 | |
2320 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2321 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2322 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2323 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2324 if (!k->oop_is_instance()) |
0 | 2325 return 0; |
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2326 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2327 JVM_END |
2328 | |
2329 | |
2330 // The following methods, used for the verifier, are never called with | |
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2331 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2332 // Typically, these methods are called in a loop with bounds determined |
2333 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2334 // zero for arrays. | |
2335 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2336 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2337 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2338 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2339 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2340 int length = method->checked_exceptions_length(); |
0 | 2341 if (length > 0) { |
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2342 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2343 for (int i = 0; i < length; i++) { |
2344 exceptions[i] = table[i].class_cp_index; | |
2345 } | |
2346 } | |
2347 JVM_END | |
2348 | |
2349 | |
2350 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2351 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2352 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2353 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2354 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2355 return method->checked_exceptions_length(); |
0 | 2356 JVM_END |
2357 | |
2358 | |
2359 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2360 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2361 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2362 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2363 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2364 memcpy(code, method->code_base(), method->code_size()); |
0 | 2365 JVM_END |
2366 | |
2367 | |
2368 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2369 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2370 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2371 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2372 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2373 return method->code_size(); |
0 | 2374 JVM_END |
2375 | |
2376 | |
2377 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2378 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2379 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2381 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2382 ExceptionTable extable(method); |
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2383 entry->start_pc = extable.start_pc(entry_index); |
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2384 entry->end_pc = extable.end_pc(entry_index); |
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2385 entry->handler_pc = extable.handler_pc(entry_index); |
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2386 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2387 JVM_END |
2388 | |
2389 | |
2390 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2391 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2392 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2393 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2394 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2395 return method->exception_table_length(); |
0 | 2396 JVM_END |
2397 | |
2398 | |
2399 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2400 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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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->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2405 JVM_END |
2406 | |
2407 | |
2408 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2409 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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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 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2413 JVM_END |
2414 | |
2415 | |
2416 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2417 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2418 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2419 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2420 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2421 return method->max_locals(); |
0 | 2422 JVM_END |
2423 | |
2424 | |
2425 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2426 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2427 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2428 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2429 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2430 return method->size_of_parameters(); |
0 | 2431 JVM_END |
2432 | |
2433 | |
2434 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2435 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2436 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2437 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2438 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2439 return method->verifier_max_stack(); |
0 | 2440 JVM_END |
2441 | |
2442 | |
2443 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2444 JVMWrapper("JVM_IsConstructorIx"); | |
2445 ResourceMark rm(THREAD); | |
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2446 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2447 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2448 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2449 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2450 JVM_END |
2451 | |
2452 | |
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2453 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2454 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2455 ResourceMark rm(THREAD); |
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2456 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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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->is_overpass(); |
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2460 JVM_END |
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2461 |
0 | 2462 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2463 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2464 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2465 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2466 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2467 return method->name()->as_utf8(); |
0 | 2468 JVM_END |
2469 | |
2470 | |
2471 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2472 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2473 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2474 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2475 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2476 return method->signature()->as_utf8(); |
0 | 2477 JVM_END |
2478 | |
2479 /** | |
2480 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2481 * read entries in the constant pool. Since the old verifier always | |
2482 * works on a copy of the code, it will not see any rewriting that | |
2483 * may possibly occur in the middle of verification. So it is important | |
2484 * that nothing it calls tries to use the cpCache instead of the raw | |
2485 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2486 */ | |
2487 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2488 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2489 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2490 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2491 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2492 switch (cp->tag_at(cp_index).value()) { |
2493 case JVM_CONSTANT_Fieldref: | |
2494 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2495 default: | |
2496 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2497 } | |
2498 ShouldNotReachHere(); | |
2499 return NULL; | |
2500 JVM_END | |
2501 | |
2502 | |
2503 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2504 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2505 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2506 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2507 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2508 switch (cp->tag_at(cp_index).value()) { |
2509 case JVM_CONSTANT_InterfaceMethodref: | |
2510 case JVM_CONSTANT_Methodref: | |
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2511 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2512 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2513 default: | |
2514 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2515 } | |
2516 ShouldNotReachHere(); | |
2517 return NULL; | |
2518 JVM_END | |
2519 | |
2520 | |
2521 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2522 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2523 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2524 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2525 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2526 switch (cp->tag_at(cp_index).value()) { |
2527 case JVM_CONSTANT_InterfaceMethodref: | |
2528 case JVM_CONSTANT_Methodref: | |
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2529 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2530 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2531 default: | |
2532 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2533 } | |
2534 ShouldNotReachHere(); | |
2535 return NULL; | |
2536 JVM_END | |
2537 | |
2538 | |
2539 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2540 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2541 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2542 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2543 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2544 switch (cp->tag_at(cp_index).value()) { |
2545 case JVM_CONSTANT_Fieldref: | |
2546 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2547 default: | |
2548 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2549 } | |
2550 ShouldNotReachHere(); | |
2551 return NULL; | |
2552 JVM_END | |
2553 | |
2554 | |
2555 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2556 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2557 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2558 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2559 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2560 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2561 return classname->as_utf8(); |
2562 JVM_END | |
2563 | |
2564 | |
2565 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2566 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2567 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2568 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2569 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2570 switch (cp->tag_at(cp_index).value()) { |
2571 case JVM_CONSTANT_Fieldref: { | |
2572 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2573 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2574 return classname->as_utf8(); |
2575 } | |
2576 default: | |
2577 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2578 } | |
2579 ShouldNotReachHere(); | |
2580 return NULL; | |
2581 JVM_END | |
2582 | |
2583 | |
2584 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2585 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2586 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2587 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2588 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2589 switch (cp->tag_at(cp_index).value()) { |
2590 case JVM_CONSTANT_Methodref: | |
2591 case JVM_CONSTANT_InterfaceMethodref: { | |
2592 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2593 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2594 return classname->as_utf8(); |
2595 } | |
2596 default: | |
2597 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2598 } | |
2599 ShouldNotReachHere(); | |
2600 return NULL; | |
2601 JVM_END | |
2602 | |
2603 | |
3938 | 2604 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2605 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2606 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2607 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2608 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2609 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2610 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2611 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2612 switch (cp->tag_at(cp_index).value()) { |
2613 case JVM_CONSTANT_Fieldref: { | |
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2614 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2615 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2616 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2617 if (fs.name() == name && fs.signature() == signature) { | |
2618 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2619 } |
2620 } | |
2621 return -1; | |
2622 } | |
2623 default: | |
2624 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2625 } | |
2626 ShouldNotReachHere(); | |
2627 return 0; | |
2628 JVM_END | |
2629 | |
2630 | |
2631 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2632 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2633 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2634 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2635 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2636 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2637 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2638 switch (cp->tag_at(cp_index).value()) { |
2639 case JVM_CONSTANT_Methodref: | |
2640 case JVM_CONSTANT_InterfaceMethodref: { | |
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2641 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2642 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2643 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2644 int methods_count = methods->length(); |
2645 for (int i = 0; i < methods_count; i++) { | |
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2646 Method* method = methods->at(i); |
0 | 2647 if (method->name() == name && method->signature() == signature) { |
2648 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2649 } | |
2650 } | |
2651 return -1; | |
2652 } | |
2653 default: | |
2654 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2655 } | |
2656 ShouldNotReachHere(); | |
2657 return 0; | |
2658 JVM_END | |
2659 | |
2660 | |
2661 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2662 | |
2663 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2664 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2665 JVM_END | |
2666 | |
2667 | |
2668 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2669 JVMWrapper("JVM_IsSameClassPackage"); | |
2670 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2671 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2672 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2673 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2674 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2675 JVM_END | |
2676 | |
2677 | |
2678 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2679 | |
2680 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2681 JVMWrapper2("JVM_Open (%s)", fname); | |
2682 | |
2683 //%note jvm_r6 | |
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|
2684 int result = os::open(fname, flags, mode); |
0 | 2685 if (result >= 0) { |
2686 return result; | |
2687 } else { | |
2688 switch(errno) { | |
2689 case EEXIST: | |
2690 return JVM_EEXIST; | |
2691 default: | |
2692 return -1; | |
2693 } | |
2694 } | |
2695 JVM_END | |
2696 | |
2697 | |
2698 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2699 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2700 //%note jvm_r6 | |
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2701 return os::close(fd); |
0 | 2702 JVM_END |
2703 | |
2704 | |
2705 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2706 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2707 | |
2708 //%note jvm_r6 | |
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2709 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2710 JVM_END |
2711 | |
2712 | |
2713 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2714 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2715 | |
2716 //%note jvm_r6 | |
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2717 return (jint)os::write(fd, buf, nbytes); |
0 | 2718 JVM_END |
2719 | |
2720 | |
2721 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2722 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2723 //%note jvm_r6 | |
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2724 return os::available(fd, pbytes); |
0 | 2725 JVM_END |
2726 | |
2727 | |
2728 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2729 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2730 //%note jvm_r6 | |
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|
2731 return os::lseek(fd, offset, whence); |
0 | 2732 JVM_END |
2733 | |
2734 | |
2735 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2736 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
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2737 return os::ftruncate(fd, length); |
0 | 2738 JVM_END |
2739 | |
2740 | |
2741 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2742 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2743 //%note jvm_r6 | |
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2744 return os::fsync(fd); |
0 | 2745 JVM_END |
2746 | |
2747 | |
2748 // Printing support ////////////////////////////////////////////////// | |
2749 extern "C" { | |
2750 | |
2751 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2752 // see bug 4399518, 4417214 | |
2753 if ((intptr_t)count <= 0) return -1; | |
2754 return vsnprintf(str, count, fmt, args); | |
2755 } | |
2756 | |
2757 | |
2758 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2759 va_list args; | |
2760 int len; | |
2761 va_start(args, fmt); | |
2762 len = jio_vsnprintf(str, count, fmt, args); | |
2763 va_end(args); | |
2764 return len; | |
2765 } | |
2766 | |
2767 | |
2768 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2769 int len; | |
2770 va_list args; | |
2771 va_start(args, fmt); | |
2772 len = jio_vfprintf(f, fmt, args); | |
2773 va_end(args); | |
2774 return len; | |
2775 } | |
2776 | |
2777 | |
2778 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2779 if (Arguments::vfprintf_hook() != NULL) { | |
2780 return Arguments::vfprintf_hook()(f, fmt, args); | |
2781 } else { | |
2782 return vfprintf(f, fmt, args); | |
2783 } | |
2784 } | |
2785 | |
2786 | |
2191 | 2787 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2788 int len; |
2789 va_list args; | |
2790 va_start(args, fmt); | |
2791 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2792 va_end(args); | |
2793 return len; | |
2794 } | |
2795 | |
2796 | |
2797 // HotSpot specific jio method | |
2798 void jio_print(const char* s) { | |
2799 // Try to make this function as atomic as possible. | |
2800 if (Arguments::vfprintf_hook() != NULL) { | |
2801 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2802 } else { | |
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2803 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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|
2804 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2805 } |
2806 } | |
2807 | |
2808 } // Extern C | |
2809 | |
2810 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2811 | |
2812 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2813 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2814 // OSThread objects. The exception to this rule is when the target object is the thread | |
2815 // doing the operation, in which case we know that the thread won't exit until the | |
2816 // operation is done (all exits being voluntary). There are a few cases where it is | |
2817 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2818 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2819 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2820 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2821 // implementation is local to this file, we always lock Threads_lock for that one. | |
2822 | |
2823 static void thread_entry(JavaThread* thread, TRAPS) { | |
2824 HandleMark hm(THREAD); | |
2825 Handle obj(THREAD, thread->threadObj()); | |
2826 JavaValue result(T_VOID); | |
2827 JavaCalls::call_virtual(&result, | |
2828 obj, | |
1142 | 2829 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2830 vmSymbols::run_method_name(), |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2831 vmSymbols::void_method_signature(), |
0 | 2832 THREAD); |
2833 } | |
2834 | |
2835 | |
2836 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2837 JVMWrapper("JVM_StartThread"); | |
2838 JavaThread *native_thread = NULL; | |
2839 | |
2840 // We cannot hold the Threads_lock when we throw an exception, | |
2841 // due to rank ordering issues. Example: we might need to grab the | |
2842 // Heap_lock while we construct the exception. | |
2843 bool throw_illegal_thread_state = false; | |
2844 | |
2845 // We must release the Threads_lock before we can post a jvmti event | |
2846 // in Thread::start. | |
2847 { | |
2848 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2849 // we operate. | |
2850 MutexLocker mu(Threads_lock); | |
2851 | |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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2852 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
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2853 // re-starting an already started thread, so we should usually find |
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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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|
2854 // that the JavaThread is null. However for a JNI attached thread |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2855 // there is a small window between the Thread object being created |
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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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|
2856 // (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
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diff
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|
2857 // have to check for this |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2858 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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|
2859 throw_illegal_thread_state = true; |
0 | 2860 } else { |
2162
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diff
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|
2861 // We could also check the stillborn flag to see if this thread was already stopped, but |
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diff
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|
2862 // for historical reasons we let the thread detect that itself when it starts running |
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|
2863 |
0 | 2864 jlong size = |
2865 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2866 // Allocate the C++ Thread structure and create the native thread. The | |
2867 // stack size retrieved from java is signed, but the constructor takes | |
2868 // size_t (an unsigned type), so avoid passing negative values which would | |
2869 // result in really large stacks. | |
2870 size_t sz = size > 0 ? (size_t) size : 0; | |
2871 native_thread = new JavaThread(&thread_entry, sz); | |
2872 | |
2873 // At this point it may be possible that no osthread was created for the | |
2874 // JavaThread due to lack of memory. Check for this situation and throw | |
2875 // an exception if necessary. Eventually we may want to change this so | |
2876 // that we only grab the lock if the thread was created successfully - | |
2877 // then we can also do this check and throw the exception in the | |
2878 // JavaThread constructor. | |
2879 if (native_thread->osthread() != NULL) { | |
2880 // Note: the current thread is not being used within "prepare". | |
2881 native_thread->prepare(jthread); | |
2882 } | |
2883 } | |
2884 } | |
2885 | |
2886 if (throw_illegal_thread_state) { | |
2887 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2888 } | |
2889 | |
2890 assert(native_thread != NULL, "Starting null thread?"); | |
2891 | |
2892 if (native_thread->osthread() == NULL) { | |
2893 // No one should hold a reference to the 'native_thread'. | |
2894 delete native_thread; | |
2895 if (JvmtiExport::should_post_resource_exhausted()) { | |
2896 JvmtiExport::post_resource_exhausted( | |
2897 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
14341
ad3f8397fe37
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diff
changeset
|
2898 os::native_thread_creation_failed_msg()); |
0 | 2899 } |
2900 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
14341
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|
2901 os::native_thread_creation_failed_msg()); |
0 | 2902 } |
2903 | |
2904 Thread::start(native_thread); | |
2905 | |
2906 JVM_END | |
2907 | |
2908 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2909 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2910 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2911 // same thread as the sender, no safepoint is needed. |
0 | 2912 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2913 JVMWrapper("JVM_StopThread"); | |
2914 | |
2915 oop java_throwable = JNIHandles::resolve(throwable); | |
2916 if (java_throwable == NULL) { | |
2917 THROW(vmSymbols::java_lang_NullPointerException()); | |
2918 } | |
2919 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2920 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
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7141200: log some interesting information in ring buffers for crashes
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diff
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|
2921 Events::log_exception(JavaThread::current(), |
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parents:
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diff
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|
2922 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
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|
2923 receiver, (address)java_thread, throwable); |
2162
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diff
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|
2924 // First check if thread is alive |
0 | 2925 if (receiver != NULL) { |
2926 // Check if exception is getting thrown at self (use oop equality, since the | |
2927 // target object might exit) | |
2928 if (java_thread == thread->threadObj()) { | |
2929 THROW_OOP(java_throwable); | |
2930 } else { | |
2931 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2932 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2933 } | |
2934 } | |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
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|
2935 else { |
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
|
2936 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2937 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2938 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2939 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2940 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2941 // stillborn flag for the first case, and if the thread has already |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2942 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2943 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2944 } |
0 | 2945 JVM_END |
2946 | |
2947 | |
2948 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2949 JVMWrapper("JVM_IsThreadAlive"); | |
2950 | |
2951 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2952 return java_lang_Thread::is_alive(thread_oop); | |
2953 JVM_END | |
2954 | |
2955 | |
2956 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2957 JVMWrapper("JVM_SuspendThread"); | |
2958 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2959 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2960 | |
2961 if (receiver != NULL) { | |
2962 // thread has run and has not exited (still on threads list) | |
2963 | |
2964 { | |
2965 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2966 if (receiver->is_external_suspend()) { | |
2967 // Don't allow nested external suspend requests. We can't return | |
2968 // an error from this interface so just ignore the problem. | |
2969 return; | |
2970 } | |
2971 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2972 return; | |
2973 } | |
2974 receiver->set_external_suspend(); | |
2975 } | |
2976 | |
2977 // java_suspend() will catch threads in the process of exiting | |
2978 // and will ignore them. | |
2979 receiver->java_suspend(); | |
2980 | |
2981 // It would be nice to have the following assertion in all the | |
2982 // time, but it is possible for a racing resume request to have | |
2983 // resumed this thread right after we suspended it. Temporarily | |
2984 // enable this assertion if you are chasing a different kind of | |
2985 // bug. | |
2986 // | |
2987 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2988 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2989 } | |
2990 JVM_END | |
2991 | |
2992 | |
2993 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2994 JVMWrapper("JVM_ResumeThread"); | |
2995 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2996 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2997 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2998 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2999 // looks at it. | |
3000 MutexLocker ml(Threads_lock); | |
3001 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3002 if (thr != NULL) { | |
3003 // the thread has run and is not in the process of exiting | |
3004 thr->java_resume(); | |
3005 } | |
3006 JVM_END | |
3007 | |
3008 | |
3009 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3010 JVMWrapper("JVM_SetThreadPriority"); | |
3011 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3012 MutexLocker ml(Threads_lock); | |
3013 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3014 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3015 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3016 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3017 Thread::set_priority(thr, (ThreadPriority)prio); | |
3018 } | |
3019 JVM_END | |
3020 | |
3021 | |
3022 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3023 JVMWrapper("JVM_Yield"); | |
3024 if (os::dont_yield()) return; | |
4006 | 3025 HOTSPOT_THREAD_YIELD(); |
14380 | 3026 |
0 | 3027 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3028 // Critical for similar threading behaviour | |
3029 if (ConvertYieldToSleep) { | |
3030 os::sleep(thread, MinSleepInterval, false); | |
3031 } else { | |
3032 os::yield(); | |
3033 } | |
3034 JVM_END | |
3035 | |
3036 | |
3037 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3038 JVMWrapper("JVM_Sleep"); | |
3039 | |
3040 if (millis < 0) { | |
3041 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3042 } | |
3043 | |
3044 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3045 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3046 } | |
3047 | |
3048 // Save current thread state and restore it at the end of this block. | |
3049 // And set new thread state to SLEEPING. | |
3050 JavaThreadSleepState jtss(thread); | |
3051 | |
14380 | 3052 HOTSPOT_THREAD_SLEEP_BEGIN(millis); |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3053 |
10405 | 3054 EventThreadSleep event; |
3055 | |
0 | 3056 if (millis == 0) { |
3057 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3058 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3059 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3060 // for SOLARIS | |
3061 if (ConvertSleepToYield) { | |
3062 os::yield(); | |
3063 } else { | |
3064 ThreadState old_state = thread->osthread()->get_state(); | |
3065 thread->osthread()->set_state(SLEEPING); | |
3066 os::sleep(thread, MinSleepInterval, false); | |
3067 thread->osthread()->set_state(old_state); | |
3068 } | |
3069 } else { | |
3070 ThreadState old_state = thread->osthread()->get_state(); | |
3071 thread->osthread()->set_state(SLEEPING); | |
3072 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3073 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3074 // us while we were sleeping. We do not overwrite those. | |
3075 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3076 if (event.should_commit()) { |
3077 event.set_time(millis); | |
3078 event.commit(); | |
3079 } | |
14380 | 3080 HOTSPOT_THREAD_SLEEP_END(1); |
3081 | |
0 | 3082 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3083 // to properly restore the thread state. That's likely wrong. | |
3084 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3085 } | |
3086 } | |
3087 thread->osthread()->set_state(old_state); | |
3088 } | |
10405 | 3089 if (event.should_commit()) { |
3090 event.set_time(millis); | |
3091 event.commit(); | |
3092 } | |
14380 | 3093 HOTSPOT_THREAD_SLEEP_END(0); |
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(); |
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3252 oop loader = holder->class_loader(); |
0 | 3253 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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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()) { |
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3274 InstanceKlass* holder = m->method_holder(); |
0 | 3275 assert(holder->is_klass(), "just checking"); |
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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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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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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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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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|
3302 // Collect method holders |
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
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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3308 Klass* holder = m->method_holder(); |
0 | 3309 assert(holder->is_klass(), "just checking"); |
11001
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3310 klass_array->append(holder); |
0 | 3311 } |
3312 } | |
3313 | |
3314 // Create result array of type [Ljava/lang/Class; | |
11001
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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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3317 for (int i = 0; i < klass_array->length(); i++) { |
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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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3332 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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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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3341 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3342 assert(holder->is_klass(), "just checking"); |
6940
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|
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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3364 InstanceKlass* holder = m->method_holder(); |
0 | 3365 assert(holder->is_klass(), "just checking"); |
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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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3440 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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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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3490 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3491 oop result; |
3492 | |
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3493 if (k->oop_is_typeArray()) { |
0 | 3494 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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changeset
|
3495 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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|
3496 } else if (k->oop_is_objArray()) { |
0 | 3497 // objArray |
6831
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coleenp
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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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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 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
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 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
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
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3557 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3558 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3559 protection_domain = holder->protection_domain(); |
0 | 3560 } |
3561 } | |
3562 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3563 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3564 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
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); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
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
parents:
579
diff
changeset
|
3570 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3571 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3572 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3573 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
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
coleenp
parents:
6271
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
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
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
ikrylov
parents:
1972
diff
changeset
|
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
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
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
ikrylov
parents:
1972
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
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
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
828eafbd85cc
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:
4006
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:
4006
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
parents:
1972
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:
1972
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:
4006
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 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
3978 | |
3979 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
3980 JVMWrapper("JVM_InvokeMethod"); | |
3981 Handle method_handle; | |
3982 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
3983 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
3984 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
3985 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
3986 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
3987 jobject res = JNIHandles::make_local(env, result); | |
3988 if (JvmtiExport::should_post_vm_object_alloc()) { | |
3989 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
3990 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
3991 if (java_lang_Class::is_primitive(ret_type)) { | |
3992 // Only for primitive type vm allocates memory for java object. | |
3993 // See box() method. | |
3994 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
3995 } | |
3996 } | |
3997 return res; | |
3998 } else { | |
3999 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4000 } | |
4001 JVM_END | |
4002 | |
4003 | |
4004 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4005 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4006 oop constructor_mirror = JNIHandles::resolve(c); | |
4007 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4008 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4009 jobject res = JNIHandles::make_local(env, result); | |
4010 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4011 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4012 } | |
4013 return res; | |
4014 JVM_END | |
4015 | |
4016 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4017 | |
4018 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4019 JVMWrapper("JVM_SupportsCX8"); | |
4020 return VM_Version::supports_cx8(); | |
4021 JVM_END | |
4022 | |
4023 | |
4024 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4025 JVMWrapper("JVM_CX8Field"); | |
4026 jlong res; | |
4027 oop o = JNIHandles::resolve(obj); | |
4028 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4029 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4030 | |
4031 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4032 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4033 | |
4034 return res == oldVal; | |
4035 JVM_END | |
4036 | |
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4037 // DTrace /////////////////////////////////////////////////////////////////// |
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4038 |
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4039 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4040 JVMWrapper("JVM_DTraceGetVersion"); |
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4041 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4042 JVM_END |
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4043 |
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4044 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4045 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4046 JVM_DTraceProvider* providers)) |
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4047 JVMWrapper("JVM_DTraceActivate"); |
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4048 return DTraceJSDT::activate( |
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4049 version, module_name, providers_count, providers, CHECK_0); |
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4050 JVM_END |
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4051 |
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4052 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4053 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4054 return DTraceJSDT::is_probe_enabled(method); |
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4055 JVM_END |
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4056 |
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4057 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4058 JVMWrapper("JVM_DTraceDispose"); |
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4059 DTraceJSDT::dispose(handle); |
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4060 JVM_END |
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4061 |
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4062 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4063 JVMWrapper("JVM_DTraceIsSupported"); |
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4064 return DTraceJSDT::is_supported(); |
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4065 JVM_END |
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4066 |
0 | 4067 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4068 // jvmti agent threads, and JNI attaching threads are skipped) | |
4069 // See CR 6404306 regarding JNI attaching threads | |
4070 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4071 ResourceMark rm(THREAD); | |
4072 ThreadsListEnumerator tle(THREAD, false, false); | |
4073 JvmtiVMObjectAllocEventCollector oam; | |
4074 | |
4075 int num_threads = tle.num_threads(); | |
1142 | 4076 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4077 objArrayHandle threads_ah(THREAD, r); |
4078 | |
4079 for (int i = 0; i < num_threads; i++) { | |
4080 Handle h = tle.get_threadObj(i); | |
4081 threads_ah->obj_at_put(i, h()); | |
4082 } | |
4083 | |
4084 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4085 JVM_END | |
4086 | |
4087 | |
4088 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4089 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4090 // the corresponding entry in the given threads array | |
4091 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4092 JVMWrapper("JVM_DumpThreads"); | |
4093 JvmtiVMObjectAllocEventCollector oam; | |
4094 | |
4095 // Check if threads is null | |
4096 if (threads == NULL) { | |
4097 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4098 } | |
4099 | |
4100 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4101 objArrayHandle ah(THREAD, a); | |
4102 int num_threads = ah->length(); | |
4103 // check if threads is non-empty array | |
4104 if (num_threads == 0) { | |
4105 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4106 } | |
4107 | |
4108 // check if threads is not an array of objects of Thread class | |
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4109 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4110 if (k != SystemDictionary::Thread_klass()) { |
0 | 4111 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4112 } | |
4113 | |
4114 ResourceMark rm(THREAD); | |
4115 | |
4116 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4117 for (int i = 0; i < num_threads; i++) { | |
4118 oop thread_obj = ah->obj_at(i); | |
4119 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4120 thread_handle_array->append(h); | |
4121 } | |
4122 | |
4123 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4124 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4125 | |
4126 JVM_END | |
4127 | |
4128 // JVM monitoring and management support | |
4129 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4130 return Management::get_jmm_interface(version); | |
4131 JVM_END | |
4132 | |
4133 // com.sun.tools.attach.VirtualMachine agent properties support | |
4134 // | |
4135 // Initialize the agent properties with the properties maintained in the VM | |
4136 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4137 JVMWrapper("JVM_InitAgentProperties"); | |
4138 ResourceMark rm; | |
4139 | |
4140 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4141 | |
4142 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4143 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4144 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4145 return properties; | |
4146 JVM_END | |
4147 | |
4148 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4149 { | |
4150 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4151 JvmtiVMObjectAllocEventCollector oam; | |
4152 | |
4153 if (ofClass == NULL) { | |
4154 return NULL; | |
4155 } | |
4156 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4157 // Special handling for primitive objects | |
4158 if (java_lang_Class::is_primitive(mirror())) { | |
4159 return NULL; | |
4160 } | |
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4161 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4162 if (!k->oop_is_instance()) { |
0 | 4163 return NULL; |
4164 } | |
4165 instanceKlassHandle ik_h(THREAD, k); | |
4166 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4167 if (encl_method_class_idx == 0) { | |
4168 return NULL; | |
4169 } | |
1142 | 4170 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4171 objArrayHandle dest(THREAD, dest_o); |
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4172 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4173 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4174 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4175 if (encl_method_method_idx != 0) { | |
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4176 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4177 extract_low_short_from_int( |
4178 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4179 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4180 dest->obj_at_put(1, str()); | |
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4181 sym = ik_h->constants()->symbol_at( |
0 | 4182 extract_high_short_from_int( |
4183 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4184 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4185 dest->obj_at_put(2, str()); | |
4186 } | |
4187 return (jobjectArray) JNIHandles::make_local(dest()); | |
4188 } | |
4189 JVM_END | |
4190 | |
4191 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4192 jint javaThreadState)) | |
4193 { | |
4194 // If new thread states are added in future JDK and VM versions, | |
4195 // this should check if the JDK version is compatible with thread | |
4196 // states supported by the VM. Return NULL if not compatible. | |
4197 // | |
4198 // This function must map the VM java_lang_Thread::ThreadStatus | |
4199 // to the Java thread state that the JDK supports. | |
4200 // | |
4201 | |
4202 typeArrayHandle values_h; | |
4203 switch (javaThreadState) { | |
4204 case JAVA_THREAD_STATE_NEW : { | |
4205 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4206 values_h = typeArrayHandle(THREAD, r); | |
4207 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4208 break; | |
4209 } | |
4210 case JAVA_THREAD_STATE_RUNNABLE : { | |
4211 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4212 values_h = typeArrayHandle(THREAD, r); | |
4213 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4214 break; | |
4215 } | |
4216 case JAVA_THREAD_STATE_BLOCKED : { | |
4217 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4218 values_h = typeArrayHandle(THREAD, r); | |
4219 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4220 break; | |
4221 } | |
4222 case JAVA_THREAD_STATE_WAITING : { | |
4223 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4224 values_h = typeArrayHandle(THREAD, r); | |
4225 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4226 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4227 break; | |
4228 } | |
4229 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4230 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4231 values_h = typeArrayHandle(THREAD, r); | |
4232 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4233 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4234 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4235 break; | |
4236 } | |
4237 case JAVA_THREAD_STATE_TERMINATED : { | |
4238 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4239 values_h = typeArrayHandle(THREAD, r); | |
4240 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4241 break; | |
4242 } | |
4243 default: | |
4244 // Unknown state - probably incompatible JDK version | |
4245 return NULL; | |
4246 } | |
4247 | |
4248 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4249 } | |
4250 JVM_END | |
4251 | |
4252 | |
4253 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4254 jint javaThreadState, | |
4255 jintArray values)) | |
4256 { | |
4257 // If new thread states are added in future JDK and VM versions, | |
4258 // this should check if the JDK version is compatible with thread | |
4259 // states supported by the VM. Return NULL if not compatible. | |
4260 // | |
4261 // This function must map the VM java_lang_Thread::ThreadStatus | |
4262 // to the Java thread state that the JDK supports. | |
4263 // | |
4264 | |
4265 ResourceMark rm; | |
4266 | |
4267 // Check if threads is null | |
4268 if (values == NULL) { | |
4269 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4270 } | |
4271 | |
4272 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4273 typeArrayHandle values_h(THREAD, v); | |
4274 | |
4275 objArrayHandle names_h; | |
4276 switch (javaThreadState) { | |
4277 case JAVA_THREAD_STATE_NEW : { | |
4278 assert(values_h->length() == 1 && | |
4279 values_h->int_at(0) == java_lang_Thread::NEW, | |
4280 "Invalid threadStatus value"); | |
4281 | |
1142 | 4282 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4283 1, /* only 1 substate */ |
4284 CHECK_NULL); | |
4285 names_h = objArrayHandle(THREAD, r); | |
4286 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4287 names_h->obj_at_put(0, name()); | |
4288 break; | |
4289 } | |
4290 case JAVA_THREAD_STATE_RUNNABLE : { | |
4291 assert(values_h->length() == 1 && | |
4292 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4293 "Invalid threadStatus value"); | |
4294 | |
1142 | 4295 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4296 1, /* only 1 substate */ |
4297 CHECK_NULL); | |
4298 names_h = objArrayHandle(THREAD, r); | |
4299 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4300 names_h->obj_at_put(0, name()); | |
4301 break; | |
4302 } | |
4303 case JAVA_THREAD_STATE_BLOCKED : { | |
4304 assert(values_h->length() == 1 && | |
4305 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4306 "Invalid threadStatus value"); | |
4307 | |
1142 | 4308 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4309 1, /* only 1 substate */ |
4310 CHECK_NULL); | |
4311 names_h = objArrayHandle(THREAD, r); | |
4312 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4313 names_h->obj_at_put(0, name()); | |
4314 break; | |
4315 } | |
4316 case JAVA_THREAD_STATE_WAITING : { | |
4317 assert(values_h->length() == 2 && | |
4318 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4319 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4320 "Invalid threadStatus value"); | |
1142 | 4321 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4322 2, /* number of substates */ |
4323 CHECK_NULL); | |
4324 names_h = objArrayHandle(THREAD, r); | |
4325 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4326 CHECK_NULL); | |
4327 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4328 CHECK_NULL); | |
4329 names_h->obj_at_put(0, name0()); | |
4330 names_h->obj_at_put(1, name1()); | |
4331 break; | |
4332 } | |
4333 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4334 assert(values_h->length() == 3 && | |
4335 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4336 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4337 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4338 "Invalid threadStatus value"); | |
1142 | 4339 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4340 3, /* number of substates */ |
4341 CHECK_NULL); | |
4342 names_h = objArrayHandle(THREAD, r); | |
4343 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4344 CHECK_NULL); | |
4345 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4346 CHECK_NULL); | |
4347 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4348 CHECK_NULL); | |
4349 names_h->obj_at_put(0, name0()); | |
4350 names_h->obj_at_put(1, name1()); | |
4351 names_h->obj_at_put(2, name2()); | |
4352 break; | |
4353 } | |
4354 case JAVA_THREAD_STATE_TERMINATED : { | |
4355 assert(values_h->length() == 1 && | |
4356 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4357 "Invalid threadStatus value"); | |
1142 | 4358 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4359 1, /* only 1 substate */ |
4360 CHECK_NULL); | |
4361 names_h = objArrayHandle(THREAD, r); | |
4362 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4363 names_h->obj_at_put(0, name()); | |
4364 break; | |
4365 } | |
4366 default: | |
4367 // Unknown state - probably incompatible JDK version | |
4368 return NULL; | |
4369 } | |
4370 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4371 } | |
4372 JVM_END | |
4373 | |
4374 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4375 { | |
4376 memset(info, 0, sizeof(info_size)); | |
4377 | |
4378 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4379 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4380 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4381 | |
4382 // when we add a new capability in the jvm_version_info struct, we should also | |
4383 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4384 // counter defined in runtimeService.cpp. | |
4385 info->is_attachable = AttachListener::is_attach_supported(); | |
4386 } | |
4387 JVM_END |