Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 16729:3d148f5e90b8
mx: refactor maven_install_truffle such that it uses specified paths from the project file
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Fri, 08 Aug 2014 23:14:37 +0200 |
parents | 5c0f2b338874 |
children | 3482684330ee |
rev | line source |
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0 | 1 /* |
14909 | 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
80 # include "jvm_bsd.h" | |
81 #endif | |
1972 | 82 |
0 | 83 #include <errno.h> |
84 | |
14909 | 85 #ifndef USDT2 |
86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); | |
87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); | |
88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); | |
89 #endif /* !USDT2 */ | |
90 | |
0 | 91 /* |
92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
94 usage because if objects are move this may cause various memory stomps, bus | |
95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
96 failures": | |
97 | |
98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
100 | |
101 // Object address to be held directly in mirror & not visible to GC | |
102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
103 | |
104 // If this ctor can hit a safepoint, moving objects around, then | |
105 ComplexConstructor foo; | |
106 | |
107 // Boom! mirror may point to JUNK instead of the intended object | |
108 (some dereference of mirror) | |
109 | |
110 // Here's another call that may block for GC, making mirror stale | |
111 MutexLocker ml(some_lock); | |
112 | |
113 // And here's an initializer that can result in a stale oop | |
114 // all in one step. | |
115 oop o = call_that_can_throw_exception(TRAPS); | |
116 | |
117 | |
118 The solution is to keep the oop declaration BELOW the ctor or function | |
119 call that might cause a GC, do another resolve to reassign the oop, or | |
120 consider use of a Handle instead of an oop so there is immunity from object | |
121 motion. But note that the "QUICK" entries below do not have a handlemark | |
122 and thus can only support use of handles passed in. | |
123 */ | |
124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 126 ResourceMark rm; |
127 int line_number = -1; | |
128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
0 | 131 JavaThread* jthread = JavaThread::current(); |
132 if (jthread->has_last_Java_frame()) { | |
133 vframeStream vfst(jthread); | |
134 | |
135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
0 | 142 |
143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 148 break; |
149 } | |
150 last_caller = m; | |
151 vfst.next(); | |
152 } | |
153 // if this is called from Class.forName0 and that is called from Class.forName, | |
154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
156 bool found_it = false; | |
157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
160 vfst.next(); | |
161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 163 vfst.method()->name() == vmSymbols::forName_name()) { |
164 vfst.next(); | |
165 found_it = true; | |
166 } | |
167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
0 | 169 vmSymbols::java_lang_ClassLoader() && |
170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
171 last_caller->name() == vmSymbols::loadClass_name())) { | |
172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
0 | 178 } |
179 if (found_it && !vfst.at_end()) { | |
180 // found the caller | |
181 caller = vfst.method()->method_holder(); | |
182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
0 | 188 if (s != NULL) { |
189 source_file = s->as_C_string(); | |
190 } | |
191 } | |
192 } | |
193 if (caller != NULL) { | |
194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
0 | 197 // print in a single call to reduce interleaving between threads |
198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 202 } |
203 } | |
204 } | |
205 } | |
206 | |
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207 void trace_class_resolution(Klass* to_class) { |
0 | 208 EXCEPTION_MARK; |
209 trace_class_resolution_impl(to_class, THREAD); | |
210 if (HAS_PENDING_EXCEPTION) { | |
211 CLEAR_PENDING_EXCEPTION; | |
212 } | |
213 } | |
214 | |
215 // Wrapper to trace JVM functions | |
216 | |
217 #ifdef ASSERT | |
218 class JVMTraceWrapper : public StackObj { | |
219 public: | |
220 JVMTraceWrapper(const char* format, ...) { | |
221 if (TraceJVMCalls) { | |
222 va_list ap; | |
223 va_start(ap, format); | |
224 tty->print("JVM "); | |
225 tty->vprint_cr(format, ap); | |
226 va_end(ap); | |
227 } | |
228 } | |
229 }; | |
230 | |
231 Histogram* JVMHistogram; | |
232 volatile jint JVMHistogram_lock = 0; | |
233 | |
234 class JVMHistogramElement : public HistogramElement { | |
235 public: | |
236 JVMHistogramElement(const char* name); | |
237 }; | |
238 | |
239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
240 _name = elementName; | |
241 uintx count = 0; | |
242 | |
243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
245 count +=1; | |
246 if ( (WarnOnStalledSpinLock > 0) | |
247 && (count % WarnOnStalledSpinLock == 0)) { | |
248 warning("JVMHistogram_lock seems to be stalled"); | |
249 } | |
250 } | |
251 } | |
252 | |
253 if(JVMHistogram == NULL) | |
254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
255 | |
256 JVMHistogram->add_element(this); | |
257 Atomic::dec(&JVMHistogram_lock); | |
258 } | |
259 | |
260 #define JVMCountWrapper(arg) \ | |
261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
263 | |
264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
268 #else | |
269 #define JVMWrapper(arg1) | |
270 #define JVMWrapper2(arg1, arg2) | |
271 #define JVMWrapper3(arg1, arg2, arg3) | |
272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
273 #endif | |
274 | |
275 | |
276 // Interface version ///////////////////////////////////////////////////////////////////// | |
277 | |
278 | |
279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
280 return JVM_INTERFACE_VERSION; | |
281 JVM_END | |
282 | |
283 | |
284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
285 | |
286 | |
287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
288 JVMWrapper("JVM_CurrentTimeMillis"); | |
289 return os::javaTimeMillis(); | |
290 JVM_END | |
291 | |
292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
293 JVMWrapper("JVM_NanoTime"); | |
294 return os::javaTimeNanos(); | |
295 JVM_END | |
296 | |
297 | |
298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
299 jobject dst, jint dst_pos, jint length)) | |
300 JVMWrapper("JVM_ArrayCopy"); | |
301 // Check if we have null pointers | |
302 if (src == NULL || dst == NULL) { | |
303 THROW(vmSymbols::java_lang_NullPointerException()); | |
304 } | |
305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
309 // Do copy | |
6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 311 JVM_END |
312 | |
313 | |
314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
315 JavaValue r(T_OBJECT); | |
316 // public synchronized Object put(Object key, Object value); | |
317 HandleMark hm(THREAD); | |
318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
320 JavaCalls::call_virtual(&r, | |
321 props, | |
1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
0 | 325 key_str, |
326 value_str, | |
327 THREAD); | |
328 } | |
329 | |
330 | |
331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
332 | |
333 | |
334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
335 JVMWrapper("JVM_InitProperties"); | |
336 ResourceMark rm; | |
337 | |
338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
339 | |
340 // System property list includes both user set via -D option and | |
341 // jvm system specific properties. | |
342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
343 PUTPROP(props, p->key(), p->value()); | |
344 } | |
345 | |
346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
347 // to the sun.nio.MaxDirectMemorySize property. | |
348 // Do this after setting user properties to prevent people | |
349 // from setting the value with a -D option, as requested. | |
350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
0 | 358 } |
359 | |
360 // JVM monitoring and management support | |
361 // Add the sun.management.compiler property for the compiler's name | |
362 { | |
363 #undef CSIZE | |
364 #if defined(_LP64) || defined(_WIN64) | |
365 #define CSIZE "64-Bit " | |
366 #else | |
367 #define CSIZE | |
368 #endif // 64bit | |
369 | |
370 #ifdef TIERED | |
371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
372 #else | |
373 #if defined(COMPILER1) | |
374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
375 #elif defined(COMPILER2) | |
376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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377 #elif defined(GRAAL) |
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378 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
0 | 379 #else |
380 const char* compiler_name = ""; | |
381 #endif // compilers | |
382 #endif // TIERED | |
383 | |
384 if (*compiler_name != '\0' && | |
385 (Arguments::mode() != Arguments::_int)) { | |
386 PUTPROP(props, "sun.management.compiler", compiler_name); | |
387 } | |
388 } | |
389 | |
390 return properties; | |
391 JVM_END | |
392 | |
393 | |
394 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
395 | |
396 extern volatile jint vm_created; | |
397 | |
398 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
399 if (vm_created != 0 && (code == 0)) { | |
400 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
401 Universe::run_finalizers_on_exit(); | |
402 } | |
403 before_exit(thread); | |
404 vm_exit(code); | |
405 JVM_END | |
406 | |
407 | |
408 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
409 before_exit(thread); | |
410 vm_exit(code); | |
411 JVM_END | |
412 | |
413 | |
414 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
415 register_on_exit_function(func); | |
416 JVM_END | |
417 | |
418 | |
419 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
420 JVMWrapper("JVM_GC"); | |
421 if (!DisableExplicitGC) { | |
422 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
423 } | |
424 JVM_END | |
425 | |
426 | |
427 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
428 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
429 return Universe::heap()->millis_since_last_gc(); | |
430 JVM_END | |
431 | |
432 | |
433 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
434 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
435 JVM_END | |
436 | |
437 | |
438 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
439 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
440 JVM_END | |
441 | |
442 static inline jlong convert_size_t_to_jlong(size_t val) { | |
443 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
444 NOT_LP64 (return (jlong)val;) | |
445 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
446 } | |
447 | |
448 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
449 JVMWrapper("JVM_TotalMemory"); | |
450 size_t n = Universe::heap()->capacity(); | |
451 return convert_size_t_to_jlong(n); | |
452 JVM_END | |
453 | |
454 | |
455 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
456 JVMWrapper("JVM_FreeMemory"); | |
457 CollectedHeap* ch = Universe::heap(); | |
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458 size_t n; |
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459 { |
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460 MutexLocker x(Heap_lock); |
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461 n = ch->capacity() - ch->used(); |
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462 } |
0 | 463 return convert_size_t_to_jlong(n); |
464 JVM_END | |
465 | |
466 | |
467 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
468 JVMWrapper("JVM_MaxMemory"); | |
469 size_t n = Universe::heap()->max_capacity(); | |
470 return convert_size_t_to_jlong(n); | |
471 JVM_END | |
472 | |
473 | |
474 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
475 JVMWrapper("JVM_ActiveProcessorCount"); | |
476 return os::active_processor_count(); | |
477 JVM_END | |
478 | |
479 | |
480 | |
481 // java.lang.Throwable ////////////////////////////////////////////////////// | |
482 | |
483 | |
484 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
485 JVMWrapper("JVM_FillInStackTrace"); | |
486 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
487 java_lang_Throwable::fill_in_stack_trace(exception); | |
488 JVM_END | |
489 | |
490 | |
491 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
492 JVMWrapper("JVM_GetStackTraceDepth"); | |
493 oop exception = JNIHandles::resolve(throwable); | |
494 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
495 JVM_END | |
496 | |
497 | |
498 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
499 JVMWrapper("JVM_GetStackTraceElement"); | |
500 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
501 oop exception = JNIHandles::resolve(throwable); | |
502 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
503 return JNIHandles::make_local(env, element); | |
504 JVM_END | |
505 | |
506 | |
507 // java.lang.Object /////////////////////////////////////////////// | |
508 | |
509 | |
510 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
511 JVMWrapper("JVM_IHashCode"); | |
512 // as implemented in the classic virtual machine; return 0 if object is NULL | |
513 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
514 JVM_END | |
515 | |
516 | |
517 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
518 JVMWrapper("JVM_MonitorWait"); | |
519 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
520 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
521 if (JvmtiExport::should_post_monitor_wait()) { | |
522 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
523 } | |
524 ObjectSynchronizer::wait(obj, ms, CHECK); | |
525 JVM_END | |
526 | |
527 | |
528 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
529 JVMWrapper("JVM_MonitorNotify"); | |
530 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
531 ObjectSynchronizer::notify(obj, CHECK); | |
532 JVM_END | |
533 | |
534 | |
535 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
536 JVMWrapper("JVM_MonitorNotifyAll"); | |
537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
538 ObjectSynchronizer::notifyall(obj, CHECK); | |
539 JVM_END | |
540 | |
541 | |
542 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
543 JVMWrapper("JVM_Clone"); | |
544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
545 const KlassHandle klass (THREAD, obj->klass()); | |
546 JvmtiVMObjectAllocEventCollector oam; | |
547 | |
548 #ifdef ASSERT | |
549 // Just checking that the cloneable flag is set correct | |
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550 if (obj->is_array()) { |
0 | 551 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
552 } else { | |
553 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 554 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 555 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
556 } | |
557 #endif | |
558 | |
559 // Check if class of obj supports the Cloneable interface. | |
560 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
561 if (!klass->is_cloneable()) { | |
562 ResourceMark rm(THREAD); | |
563 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
564 } | |
565 | |
566 // Make shallow object copy | |
567 const int size = obj->size(); | |
568 oop new_obj = NULL; | |
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569 if (obj->is_array()) { |
0 | 570 const int length = ((arrayOop)obj())->length(); |
571 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
572 } else { | |
573 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
574 } | |
575 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
576 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
577 // be suspended in the middle of copying the pointer and end up with parts | |
578 // of two different pointers in the field. Subsequent dereferences will crash. | |
579 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
580 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
581 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
582 // The same is true of StubRoutines::object_copy and the various oop_copy | |
583 // variants, and of the code generated by the inline_native_clone intrinsic. | |
584 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
585 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
586 (size_t)align_object_size(size) / HeapWordsPerLong); | |
587 // Clear the header | |
588 new_obj->init_mark(); | |
589 | |
590 // Store check (mark entire object and let gc sort it out) | |
591 BarrierSet* bs = Universe::heap()->barrier_set(); | |
592 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
593 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
594 | |
595 // Caution: this involves a java upcall, so the clone should be | |
596 // "gc-robust" by this stage. | |
597 if (klass->has_finalizer()) { | |
598 assert(obj->is_instance(), "should be instanceOop"); | |
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599 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 600 } |
601 | |
602 return JNIHandles::make_local(env, oop(new_obj)); | |
603 JVM_END | |
604 | |
605 // java.lang.Compiler //////////////////////////////////////////////////// | |
606 | |
607 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
608 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
609 // functions are all silently ignored unless JVM warnings are printed. | |
610 | |
611 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
612 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
613 JVM_END | |
614 | |
615 | |
616 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
617 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
618 return JNI_FALSE; | |
619 JVM_END | |
620 | |
621 | |
622 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
623 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
624 return JNI_FALSE; | |
625 JVM_END | |
626 | |
627 | |
628 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
629 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
630 return JNI_FALSE; | |
631 JVM_END | |
632 | |
633 | |
634 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
635 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
636 return NULL; | |
637 JVM_END | |
638 | |
639 | |
640 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
641 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
642 JVM_END | |
643 | |
644 | |
645 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
646 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
647 JVM_END | |
648 | |
649 | |
650 | |
651 // Error message support ////////////////////////////////////////////////////// | |
652 | |
653 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
654 JVMWrapper("JVM_GetLastErrorString"); | |
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655 return (jint)os::lasterror(buf, len); |
0 | 656 JVM_END |
657 | |
658 | |
659 // java.io.File /////////////////////////////////////////////////////////////// | |
660 | |
661 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
662 JVMWrapper2("JVM_NativePath (%s)", path); | |
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663 return os::native_path(path); |
0 | 664 JVM_END |
665 | |
666 | |
667 // Misc. class handling /////////////////////////////////////////////////////////// | |
668 | |
669 | |
670 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
671 JVMWrapper("JVM_GetCallerClass"); | |
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672 |
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673 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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674 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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675 // temporarily for existing code to use until a replacement API is defined. |
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676 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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677 Klass* k = thread->security_get_caller_class(depth); |
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678 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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679 } |
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680 |
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681 // Getting the class of the caller frame. |
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682 // |
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683 // The call stack at this point looks something like this: |
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684 // |
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685 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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686 // [1] [ @CallerSensitive API.method ] |
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687 // [.] [ (skipped intermediate frames) ] |
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688 // [n] [ caller ] |
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689 vframeStream vfst(thread); |
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690 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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691 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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692 Method* m = vfst.method(); |
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693 assert(m != NULL, "sanity"); |
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694 switch (n) { |
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695 case 0: |
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696 // This must only be called from Reflection.getCallerClass |
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697 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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698 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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699 } |
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700 // fall-through |
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701 case 1: |
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702 // Frame 0 and 1 must be caller sensitive. |
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703 if (!m->caller_sensitive()) { |
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704 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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705 } |
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706 break; |
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707 default: |
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708 if (!m->is_ignored_by_security_stack_walk()) { |
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709 // We have reached the desired frame; return the holder class. |
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710 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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711 } |
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712 break; |
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713 } |
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714 } |
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715 return NULL; |
0 | 716 JVM_END |
717 | |
718 | |
719 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
720 JVMWrapper("JVM_FindPrimitiveClass"); | |
721 oop mirror = NULL; | |
722 BasicType t = name2type(utf); | |
723 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
724 mirror = Universe::java_mirror(t); | |
725 } | |
726 if (mirror == NULL) { | |
727 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
728 } else { | |
729 return (jclass) JNIHandles::make_local(env, mirror); | |
730 } | |
731 JVM_END | |
732 | |
733 | |
734 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
735 JVMWrapper("JVM_ResolveClass"); | |
736 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
737 JVM_END | |
738 | |
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739 |
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740 // Returns a class loaded by the bootstrap class loader; or null |
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741 // if not found. ClassNotFoundException is not thrown. |
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742 // |
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743 // Rationale behind JVM_FindClassFromBootLoader |
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744 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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745 // b> because of (a) java.dll has a direct dependecy on the unexported |
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746 // private symbol "_JVM_FindClassFromClassLoader@20". |
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747 // c> the launcher cannot use the private symbol as it dynamically opens |
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748 // the entry point, so if something changes, the launcher will fail |
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749 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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750 // stable exported interface. |
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751 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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752 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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753 // JVM_FindClassFromClassLoader and will not be backward compatible |
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754 // with older JDKs. |
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755 // Thus a public/stable exported entry point is the right solution, |
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756 // public here means public in linker semantics, and is exported only |
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757 // to the JDK, and is not intended to be a public API. |
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758 |
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759 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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760 const char* name)) |
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761 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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762 |
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763 // Java libraries should ensure that name is never null... |
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764 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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765 // It's impossible to create this class; the name cannot fit |
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766 // into the constant pool. |
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767 return NULL; |
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768 } |
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769 |
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770 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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771 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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772 if (k == NULL) { |
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773 return NULL; |
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774 } |
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775 |
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776 if (TraceClassResolution) { |
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777 trace_class_resolution(k); |
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778 } |
6983 | 779 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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780 JVM_END |
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781 |
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782 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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783 jboolean init, jobject loader, |
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784 jboolean throwError)) |
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785 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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786 throwError ? "error" : "exception"); |
388 | 787 // Java libraries should ensure that name is never null... |
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788 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 789 // It's impossible to create this class; the name cannot fit |
790 // into the constant pool. | |
791 if (throwError) { | |
792 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
793 } else { | |
794 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
795 } | |
796 } | |
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797 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 798 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
799 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
800 Handle(), throwError, THREAD); | |
801 | |
802 if (TraceClassResolution && result != NULL) { | |
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803 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 804 } |
805 return result; | |
0 | 806 JVM_END |
807 | |
808 | |
809 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
810 jboolean init, jclass from)) | |
811 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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812 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 813 // It's impossible to create this class; the name cannot fit |
814 // into the constant pool. | |
815 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
816 } | |
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817 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 818 oop from_class_oop = JNIHandles::resolve(from); |
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819 Klass* from_class = (from_class_oop == NULL) |
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820 ? (Klass*)NULL |
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821 : java_lang_Class::as_Klass(from_class_oop); |
0 | 822 oop class_loader = NULL; |
823 oop protection_domain = NULL; | |
824 if (from_class != NULL) { | |
6983 | 825 class_loader = from_class->class_loader(); |
826 protection_domain = from_class->protection_domain(); | |
0 | 827 } |
828 Handle h_loader(THREAD, class_loader); | |
829 Handle h_prot (THREAD, protection_domain); | |
830 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
831 h_prot, true, thread); | |
832 | |
833 if (TraceClassResolution && result != NULL) { | |
834 // this function is generally only used for class loading during verification. | |
835 ResourceMark rm; | |
836 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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837 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 838 const char * from_name = from_class->external_name(); |
0 | 839 |
840 oop mirror = JNIHandles::resolve_non_null(result); | |
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841 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 842 const char * to = to_class->external_name(); |
0 | 843 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
844 } | |
845 | |
846 return result; | |
847 JVM_END | |
848 | |
849 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
850 if (loader.is_null()) { | |
851 return; | |
852 } | |
853 | |
854 // check whether the current caller thread holds the lock or not. | |
855 // If not, increment the corresponding counter | |
856 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
857 ObjectSynchronizer::owner_self) { | |
858 counter->inc(); | |
859 } | |
860 } | |
861 | |
862 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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863 // and JVM_DefineClassWithSourceCond() |
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864 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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865 jobject loader, const jbyte *buf, |
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866 jsize len, jobject pd, const char *source, |
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867 jboolean verify, TRAPS) { |
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868 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 869 |
875
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870 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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871 JavaThread* jt = (JavaThread*) THREAD; |
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872 |
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873 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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874 ClassLoader::perf_define_appclass_selftime(), |
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875 ClassLoader::perf_define_appclasses(), |
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876 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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877 jt->get_thread_stat()->perf_timers_addr(), |
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878 PerfClassTraceTime::DEFINE_CLASS); |
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|
879 |
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880 if (UsePerfData) { |
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881 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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882 } |
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883 |
0 | 884 // Since exceptions can be thrown, class initialization can take place |
885 // if name is NULL no check for class name in .class stream has to be made. | |
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886 TempNewSymbol class_name = NULL; |
0 | 887 if (name != NULL) { |
888 const int str_len = (int)strlen(name); | |
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889 if (str_len > Symbol::max_length()) { |
0 | 890 // It's impossible to create this class; the name cannot fit |
891 // into the constant pool. | |
892 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
893 } | |
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894 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 895 } |
896 | |
897 ResourceMark rm(THREAD); | |
898 ClassFileStream st((u1*) buf, len, (char *)source); | |
899 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
900 if (UsePerfData) { | |
901 is_lock_held_by_thread(class_loader, | |
902 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
903 THREAD); | |
904 } | |
905 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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906 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 907 protection_domain, &st, |
973
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908 verify != 0, |
0 | 909 CHECK_NULL); |
910 | |
911 if (TraceClassResolution && k != NULL) { | |
912 trace_class_resolution(k); | |
913 } | |
914 | |
6983 | 915 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 916 } |
917 | |
918 | |
919 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
920 JVMWrapper2("JVM_DefineClass %s", name); | |
921 | |
973
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922 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 923 JVM_END |
924 | |
925 | |
926 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
927 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
928 | |
973
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929 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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930 JVM_END |
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931 |
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932 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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933 jobject loader, const jbyte *buf, |
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934 jsize len, jobject pd, |
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935 const char *source, jboolean verify)) |
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936 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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937 |
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938 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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939 JVM_END |
0 | 940 |
941 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
942 JVMWrapper("JVM_FindLoadedClass"); | |
943 ResourceMark rm(THREAD); | |
944 | |
945 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
946 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
947 | |
948 const char* str = java_lang_String::as_utf8_string(string()); | |
949 // Sanity check, don't expect null | |
950 if (str == NULL) return NULL; | |
951 | |
952 const int str_len = (int)strlen(str); | |
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953 if (str_len > Symbol::max_length()) { |
0 | 954 // It's impossible to create this class; the name cannot fit |
955 // into the constant pool. | |
956 return NULL; | |
957 } | |
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958 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 959 |
960 // Security Note: | |
961 // The Java level wrapper will perform the necessary security check allowing | |
962 // us to pass the NULL as the initiating class loader. | |
963 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
964 if (UsePerfData) { | |
965 is_lock_held_by_thread(h_loader, | |
966 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
967 THREAD); | |
968 } | |
969 | |
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970 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 971 h_loader, |
972 Handle(), | |
973 CHECK_NULL); | |
974 | |
975 return (k == NULL) ? NULL : | |
6983 | 976 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 977 JVM_END |
978 | |
979 | |
980 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
981 | |
982 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
983 assert (cls != NULL, "illegal class"); | |
984 JVMWrapper("JVM_GetClassName"); | |
985 JvmtiVMObjectAllocEventCollector oam; | |
986 ResourceMark rm(THREAD); | |
987 const char* name; | |
988 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
989 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
990 } else { | |
991 // Consider caching interned string in Klass | |
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992 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 993 assert(k->is_klass(), "just checking"); |
6983 | 994 name = k->external_name(); |
0 | 995 } |
996 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
997 return (jstring) JNIHandles::make_local(env, result); | |
998 JVM_END | |
999 | |
1000 | |
1001 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1002 JVMWrapper("JVM_GetClassInterfaces"); | |
1003 JvmtiVMObjectAllocEventCollector oam; | |
1004 oop mirror = JNIHandles::resolve_non_null(cls); | |
1005 | |
1006 // Special handling for primitive objects | |
1007 if (java_lang_Class::is_primitive(mirror)) { | |
1008 // Primitive objects does not have any interfaces | |
1142 | 1009 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1010 return (jobjectArray) JNIHandles::make_local(env, r); |
1011 } | |
1012 | |
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1013 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1014 // Figure size of result array |
1015 int size; | |
1016 if (klass->oop_is_instance()) { | |
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1017 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1018 } else { |
1019 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1020 size = 2; | |
1021 } | |
1022 | |
1023 // Allocate result array | |
1142 | 1024 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1025 objArrayHandle result (THREAD, r); |
1026 // Fill in result | |
1027 if (klass->oop_is_instance()) { | |
1028 // Regular instance klass, fill in all local interfaces | |
1029 for (int index = 0; index < size; index++) { | |
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1030 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1031 result->obj_at_put(index, k->java_mirror()); |
0 | 1032 } |
1033 } else { | |
1034 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1035 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1036 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1037 } |
1038 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1039 JVM_END | |
1040 | |
1041 | |
1042 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1043 JVMWrapper("JVM_GetClassLoader"); | |
1044 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1045 return NULL; | |
1046 } | |
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1047 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1048 oop loader = k->class_loader(); |
0 | 1049 return JNIHandles::make_local(env, loader); |
1050 JVM_END | |
1051 | |
1052 | |
1053 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1054 JVMWrapper("JVM_IsInterface"); | |
1055 oop mirror = JNIHandles::resolve_non_null(cls); | |
1056 if (java_lang_Class::is_primitive(mirror)) { | |
1057 return JNI_FALSE; | |
1058 } | |
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1059 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1060 jboolean result = k->is_interface(); |
1061 assert(!result || k->oop_is_instance(), | |
0 | 1062 "all interfaces are instance types"); |
1063 // The compiler intrinsic for isInterface tests the | |
1064 // Klass::_access_flags bits in the same way. | |
1065 return result; | |
1066 JVM_END | |
1067 | |
1068 | |
1069 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1070 JVMWrapper("JVM_GetClassSigners"); | |
1071 JvmtiVMObjectAllocEventCollector oam; | |
1072 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1073 // There are no signers for primitive types | |
1074 return NULL; | |
1075 } | |
1076 | |
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1077 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1078 |
1079 // If there are no signers set in the class, or if the class | |
1080 // is an array, return NULL. | |
1081 if (signers == NULL) return NULL; | |
1082 | |
1083 // copy of the signers array | |
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1084 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1085 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1086 for (int index = 0; index < signers->length(); index++) { | |
1087 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1088 } | |
1089 | |
1090 // return the copy | |
1091 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1092 JVM_END | |
1093 | |
1094 | |
1095 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1096 JVMWrapper("JVM_SetClassSigners"); | |
1097 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1098 // This call is ignored for primitive types and arrays. | |
1099 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1100 // be called with an array. Only the bootstrap loader creates arrays. | |
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1101 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1102 if (k->oop_is_instance()) { |
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1103 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1104 } |
1105 } | |
1106 JVM_END | |
1107 | |
1108 | |
1109 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1110 JVMWrapper("JVM_GetProtectionDomain"); | |
1111 if (JNIHandles::resolve(cls) == NULL) { | |
1112 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1113 } | |
1114 | |
1115 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1116 // Primitive types does not have a protection domain. | |
1117 return NULL; | |
1118 } | |
1119 | |
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1120 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1121 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1122 JVM_END |
1123 | |
11010 | 1124 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1125 // If there is a security manager and protection domain, check the access | |
1126 // in the protection domain, otherwise it is authorized. | |
1127 if (java_lang_System::has_security_manager()) { | |
1128 | |
1129 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1130 // this context to revert to older behavior. | |
1131 // In this case the isAuthorized field in AccessControlContext is also not | |
1132 // present. | |
1133 if (Universe::protection_domain_implies_method() == NULL) { | |
1134 return true; | |
1135 } | |
1136 | |
1137 // Whitelist certain access control contexts | |
1138 if (java_security_AccessControlContext::is_authorized(context)) { | |
1139 return true; | |
1140 } | |
1141 | |
1142 oop prot = klass->protection_domain(); | |
1143 if (prot != NULL) { | |
1144 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1145 // in the new wrapper. | |
1146 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1147 Handle h_prot(THREAD, prot); | |
1148 JavaValue result(T_BOOLEAN); | |
1149 JavaCallArguments args(h_prot); | |
1150 JavaCalls::call(&result, m, &args, CHECK_false); | |
1151 return (result.get_jboolean() != 0); | |
1152 } | |
1153 } | |
1154 return true; | |
1155 } | |
1156 | |
1157 // Create an AccessControlContext with a protection domain with null codesource | |
1158 // and null permissions - which gives no permissions. | |
1159 oop create_dummy_access_control_context(TRAPS) { | |
1160 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1161 // new ProtectionDomain(null,null); | |
1162 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1163 Handle null_pd(THREAD, null_protection_domain); | |
1164 | |
1165 // new ProtectionDomain[] {pd}; | |
1166 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1167 context->obj_at_put(0, null_pd()); | |
1168 | |
1169 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1170 objArrayHandle h_context(THREAD, context); | |
1171 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1172 return result; | |
1173 } | |
0 | 1174 |
1175 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1176 JVMWrapper("JVM_DoPrivileged"); | |
1177 | |
1178 if (action == NULL) { | |
1179 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1180 } | |
1181 | |
11010 | 1182 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1183 vframeStream vfst(thread); | |
1184 vfst.security_get_caller_frame(1); | |
1185 | |
1186 if (vfst.at_end()) { | |
1187 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1188 } | |
1189 | |
1190 Method* method = vfst.method(); | |
1191 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1192 | |
1193 // Check that action object understands "Object run()" | |
1194 Handle h_context; | |
1195 if (context != NULL) { | |
1196 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1197 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1198 if (!authorized) { | |
1199 // Create an unprivileged access control object and call it's run function | |
1200 // instead. | |
1201 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1202 h_context = Handle(THREAD, noprivs); | |
1203 } | |
1204 } | |
0 | 1205 |
1206 // Check that action object understands "Object run()" | |
1207 Handle object (THREAD, JNIHandles::resolve(action)); | |
1208 | |
1209 // get run() method | |
6983 | 1210 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1211 vmSymbols::run_method_name(), |
1212 vmSymbols::void_object_signature()); | |
1213 methodHandle m (THREAD, m_oop); | |
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1214 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1215 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1216 } | |
1217 | |
11010 | 1218 // Stack allocated list of privileged stack elements |
1219 PrivilegedElement pi; | |
0 | 1220 if (!vfst.at_end()) { |
11010 | 1221 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1222 thread->set_privileged_stack_top(&pi); |
1223 } | |
1224 | |
1225 | |
1226 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1227 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1228 Handle pending_exception; | |
1229 JavaValue result(T_OBJECT); | |
1230 JavaCallArguments args(object); | |
1231 JavaCalls::call(&result, m, &args, THREAD); | |
1232 | |
1233 // done with action, remove ourselves from the list | |
1234 if (!vfst.at_end()) { | |
1235 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1236 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1237 } | |
1238 | |
1239 if (HAS_PENDING_EXCEPTION) { | |
1240 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1241 CLEAR_PENDING_EXCEPTION; | |
14909 | 1242 |
1142 | 1243 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1244 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1245 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1246 JavaCallArguments args(pending_exception); | |
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1247 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1248 vmSymbols::exception_void_signature(), |
0 | 1249 &args); |
1250 } | |
1251 } | |
1252 | |
1253 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1254 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1255 JVM_END | |
1256 | |
1257 | |
1258 // Returns the inherited_access_control_context field of the running thread. | |
1259 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1260 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1261 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1262 return JNIHandles::make_local(env, result); | |
1263 JVM_END | |
1264 | |
1265 class RegisterArrayForGC { | |
1266 private: | |
1267 JavaThread *_thread; | |
1268 public: | |
1269 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1270 _thread = thread; | |
1271 _thread->register_array_for_gc(array); | |
1272 } | |
1273 | |
1274 ~RegisterArrayForGC() { | |
1275 _thread->register_array_for_gc(NULL); | |
1276 } | |
1277 }; | |
1278 | |
1279 | |
1280 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1281 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1282 if (!UsePrivilegedStack) return NULL; | |
1283 | |
1284 ResourceMark rm(THREAD); | |
1285 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1286 JvmtiVMObjectAllocEventCollector oam; | |
1287 | |
1288 // count the protection domains on the execution stack. We collapse | |
1289 // duplicate consecutive protection domains into a single one, as | |
1290 // well as stopping when we hit a privileged frame. | |
1291 | |
1292 // Use vframeStream to iterate through Java frames | |
1293 vframeStream vfst(thread); | |
1294 | |
1295 oop previous_protection_domain = NULL; | |
1296 Handle privileged_context(thread, NULL); | |
1297 bool is_privileged = false; | |
1298 oop protection_domain = NULL; | |
1299 | |
1300 for(; !vfst.at_end(); vfst.next()) { | |
1301 // get method of frame | |
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1302 Method* method = vfst.method(); |
0 | 1303 intptr_t* frame_id = vfst.frame_id(); |
1304 | |
1305 // check the privileged frames to see if we have a match | |
1306 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1307 // this frame is privileged | |
1308 is_privileged = true; | |
1309 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1310 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1311 } else { | |
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1312 protection_domain = method->method_holder()->protection_domain(); |
0 | 1313 } |
1314 | |
1315 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1316 local_array->push(protection_domain); | |
1317 previous_protection_domain = protection_domain; | |
1318 } | |
1319 | |
1320 if (is_privileged) break; | |
1321 } | |
1322 | |
1323 | |
1324 // either all the domains on the stack were system domains, or | |
1325 // we had a privileged system domain | |
1326 if (local_array->is_empty()) { | |
1327 if (is_privileged && privileged_context.is_null()) return NULL; | |
1328 | |
1329 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1330 return JNIHandles::make_local(env, result); | |
1331 } | |
1332 | |
1333 // the resource area must be registered in case of a gc | |
1334 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1335 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1336 local_array->length(), CHECK_NULL); |
1337 objArrayHandle h_context(thread, context); | |
1338 for (int index = 0; index < local_array->length(); index++) { | |
1339 h_context->obj_at_put(index, local_array->at(index)); | |
1340 } | |
1341 | |
1342 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1343 | |
1344 return JNIHandles::make_local(env, result); | |
1345 JVM_END | |
1346 | |
1347 | |
1348 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1349 JVMWrapper("JVM_IsArrayClass"); | |
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1350 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1351 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1352 JVM_END |
1353 | |
1354 | |
1355 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1356 JVMWrapper("JVM_IsPrimitiveClass"); | |
1357 oop mirror = JNIHandles::resolve_non_null(cls); | |
1358 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1359 JVM_END | |
1360 | |
1361 | |
1362 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1363 JVMWrapper("JVM_GetComponentType"); | |
1364 oop mirror = JNIHandles::resolve_non_null(cls); | |
1365 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1366 return (jclass) JNIHandles::make_local(env, result); | |
1367 JVM_END | |
1368 | |
1369 | |
1370 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1371 JVMWrapper("JVM_GetClassModifiers"); | |
1372 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1373 // Primitive type | |
1374 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1375 } | |
1376 | |
6983 | 1377 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1378 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1379 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1380 return k->modifier_flags(); | |
1381 JVM_END | |
1382 | |
1383 | |
1384 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1385 | |
1386 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1387 JvmtiVMObjectAllocEventCollector oam; | |
1388 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1389 // of an InstanceKlass |
0 | 1390 |
1391 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1392 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1393 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1394 return (jobjectArray)JNIHandles::make_local(env, result); |
1395 } | |
1396 | |
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1397 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1398 InnerClassesIterator iter(k); |
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1399 |
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1400 if (iter.length() == 0) { |
0 | 1401 // Neither an inner nor outer class |
1142 | 1402 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1403 return (jobjectArray)JNIHandles::make_local(env, result); |
1404 } | |
1405 | |
1406 // find inner class info | |
1407 constantPoolHandle cp(thread, k->constants()); | |
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1408 int length = iter.length(); |
0 | 1409 |
1410 // Allocate temp. result array | |
1142 | 1411 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1412 objArrayHandle result (THREAD, r); |
1413 int members = 0; | |
1414 | |
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1415 for (; !iter.done(); iter.next()) { |
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1416 int ioff = iter.inner_class_info_index(); |
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1417 int ooff = iter.outer_class_info_index(); |
0 | 1418 |
1419 if (ioff != 0 && ooff != 0) { | |
1420 // Check to see if the name matches the class we're looking for | |
1421 // before attempting to find the class. | |
1422 if (cp->klass_name_at_matches(k, ooff)) { | |
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1423 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1424 if (outer_klass == k()) { |
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1425 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1426 instanceKlassHandle inner_klass (THREAD, ik); |
1427 | |
1428 // Throws an exception if outer klass has not declared k as | |
1429 // an inner klass | |
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1430 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1431 |
1432 result->obj_at_put(members, inner_klass->java_mirror()); | |
1433 members++; | |
1434 } | |
1435 } | |
1436 } | |
1437 } | |
1438 | |
1439 if (members != length) { | |
1440 // Return array of right length | |
1142 | 1441 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1442 for(int i = 0; i < members; i++) { |
1443 res->obj_at_put(i, result->obj_at(i)); | |
1444 } | |
1445 return (jobjectArray)JNIHandles::make_local(env, res); | |
1446 } | |
1447 | |
1448 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1449 JVM_END | |
1450 | |
1451 | |
1452 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1453 { |
0 | 1454 // ofClass is a reference to a java_lang_Class object. |
1455 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1456 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1457 return NULL; |
1458 } | |
1459 | |
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1460 bool inner_is_member = false; |
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1461 Klass* outer_klass |
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1462 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1463 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1464 if (outer_klass == NULL) return NULL; // already a top-level class |
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1465 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1466 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1467 } |
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1468 JVM_END |
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1469 |
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1470 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1471 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1472 bool* inner_is_member, |
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1473 TRAPS) { |
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1474 Thread* thread = THREAD; |
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1475 InnerClassesIterator iter(k); |
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1476 if (iter.length() == 0) { |
0 | 1477 // No inner class info => no declaring class |
1478 return NULL; | |
1479 } | |
1480 | |
1481 constantPoolHandle i_cp(thread, k->constants()); | |
1482 | |
1483 bool found = false; | |
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1484 Klass* ok; |
0 | 1485 instanceKlassHandle outer_klass; |
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1486 *inner_is_member = false; |
0 | 1487 |
1488 // Find inner_klass attribute | |
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1489 for (; !iter.done() && !found; iter.next()) { |
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1490 int ioff = iter.inner_class_info_index(); |
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1491 int ooff = iter.outer_class_info_index(); |
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1492 int noff = iter.inner_name_index(); |
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1493 if (ioff != 0) { |
0 | 1494 // Check to see if the name matches the class we're looking for |
1495 // before attempting to find the class. | |
1496 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1497 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1498 found = (k() == inner_klass); |
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1499 if (found && ooff != 0) { |
0 | 1500 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1501 outer_klass = instanceKlassHandle(thread, ok); | |
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1502 *inner_is_member = true; |
0 | 1503 } |
1504 } | |
1505 } | |
1506 } | |
1507 | |
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1508 if (found && outer_klass.is_null()) { |
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1509 // It may be anonymous; try for that. |
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1510 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1511 if (encl_method_class_idx != 0) { |
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1512 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1513 outer_klass = instanceKlassHandle(thread, ok); |
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1514 *inner_is_member = false; |
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1515 } |
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1516 } |
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1517 |
0 | 1518 // If no inner class attribute found for this class. |
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1519 if (outer_klass.is_null()) return NULL; |
0 | 1520 |
1521 // Throws an exception if outer klass has not declared k as an inner klass | |
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1522 // We need evidence that each klass knows about the other, or else |
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1523 // the system could allow a spoof of an inner class to gain access rights. |
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1524 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1525 return outer_klass(); |
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1526 } |
0 | 1527 |
1528 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1529 assert (cls != NULL, "illegal class"); | |
1530 JVMWrapper("JVM_GetClassSignature"); | |
1531 JvmtiVMObjectAllocEventCollector oam; | |
1532 ResourceMark rm(THREAD); | |
1533 // Return null for arrays and primatives | |
1534 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1535 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1536 if (k->oop_is_instance()) { |
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1537 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1538 if (sym == NULL) return NULL; |
0 | 1539 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1540 return (jstring) JNIHandles::make_local(env, str()); | |
1541 } | |
1542 } | |
1543 return NULL; | |
1544 JVM_END | |
1545 | |
1546 | |
1547 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1548 assert (cls != NULL, "illegal class"); | |
1549 JVMWrapper("JVM_GetClassAnnotations"); | |
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1550 |
0 | 1551 // Return null for arrays and primitives |
1552 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1553 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1554 if (k->oop_is_instance()) { |
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1555 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1556 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1557 } |
1558 } | |
1559 return NULL; | |
1560 JVM_END | |
1561 | |
1562 | |
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1563 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1564 // some of this code was adapted from from jni_FromReflectedField |
1565 | |
1566 oop reflected = JNIHandles::resolve_non_null(field); | |
1567 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1568 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1569 int slot = java_lang_reflect_Field::slot(reflected); |
1570 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1571 | |
1572 KlassHandle kh(THREAD, k); | |
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1573 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1574 |
1575 if (modifiers & JVM_ACC_STATIC) { | |
1576 // for static fields we only look in the current class | |
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1577 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1578 assert(false, "cannot find static field"); |
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1579 return false; |
0 | 1580 } |
1581 } else { | |
1582 // for instance fields we start with the current class and work | |
1583 // our way up through the superclass chain | |
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1584 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1585 assert(false, "cannot find instance field"); |
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1586 return false; |
0 | 1587 } |
1588 } | |
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1589 return true; |
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1590 } |
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1591 |
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1592 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1593 // field is a handle to a java.lang.reflect.Field object |
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1594 assert(field != NULL, "illegal field"); |
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|
1595 JVMWrapper("JVM_GetFieldAnnotations"); |
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1596 |
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1597 fieldDescriptor fd; |
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1598 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1599 if (!gotFd) { |
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|
1600 return NULL; |
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1601 } |
0 | 1602 |
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1603 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1604 JVM_END |
1605 | |
1606 | |
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1607 static Method* jvm_get_method_common(jobject method) { |
0 | 1608 // some of this code was adapted from from jni_FromReflectedMethod |
1609 | |
1610 oop reflected = JNIHandles::resolve_non_null(method); | |
1611 oop mirror = NULL; | |
1612 int slot = 0; | |
1613 | |
1142 | 1614 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1615 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1616 slot = java_lang_reflect_Constructor::slot(reflected); | |
1617 } else { | |
1142 | 1618 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1619 "wrong type"); |
1620 mirror = java_lang_reflect_Method::clazz(reflected); | |
1621 slot = java_lang_reflect_Method::slot(reflected); | |
1622 } | |
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1623 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1624 |
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1625 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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1626 assert(m != NULL, "cannot find method"); |
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1627 return m; // caller has to deal with NULL in product mode |
0 | 1628 } |
1629 | |
1630 | |
1631 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1632 JVMWrapper("JVM_GetMethodAnnotations"); | |
1633 | |
1634 // method is a handle to a java.lang.reflect.Method object | |
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1635 Method* m = jvm_get_method_common(method); |
8818
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1636 if (m == NULL) { |
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|
1637 return NULL; |
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|
1638 } |
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1639 |
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1640 return (jbyteArray) JNIHandles::make_local(env, |
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1641 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1642 JVM_END |
1643 | |
1644 | |
1645 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1646 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1647 | |
1648 // method is a handle to a java.lang.reflect.Method object | |
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1649 Method* m = jvm_get_method_common(method); |
8818
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1650 if (m == NULL) { |
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|
1651 return NULL; |
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|
1652 } |
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1653 |
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1654 return (jbyteArray) JNIHandles::make_local(env, |
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1655 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1656 JVM_END |
1657 | |
1658 | |
1659 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1660 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1661 | |
1662 // method is a handle to a java.lang.reflect.Method object | |
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1663 Method* m = jvm_get_method_common(method); |
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1664 if (m == NULL) { |
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|
1665 return NULL; |
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|
1666 } |
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|
1667 |
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1668 return (jbyteArray) JNIHandles::make_local(env, |
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1669 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1670 JVM_END |
1671 | |
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1672 /* Type use annotations support (JDK 1.8) */ |
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1673 |
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1674 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1675 assert (cls != NULL, "illegal class"); |
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1676 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1677 ResourceMark rm(THREAD); |
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|
1678 // Return null for arrays and primitives |
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1679 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1680 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1681 if (k->oop_is_instance()) { |
8031 | 1682 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1683 if (type_annotations != NULL) { |
8031 | 1684 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
7611
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1685 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1686 } |
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1687 } |
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|
1688 } |
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|
1689 return NULL; |
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|
1690 JVM_END |
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|
1691 |
8818
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1692 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1693 assert (method != NULL, "illegal method"); |
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|
1694 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1695 |
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|
1696 // method is a handle to a java.lang.reflect.Method object |
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|
1697 Method* m = jvm_get_method_common(method); |
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|
1698 if (m == NULL) { |
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|
1699 return NULL; |
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|
1700 } |
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|
1701 |
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|
1702 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1703 if (type_annotations != NULL) { |
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|
1704 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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|
1705 return (jbyteArray) JNIHandles::make_local(env, a); |
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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_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1712 assert (field != NULL, "illegal field"); |
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|
1713 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1714 |
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|
1715 fieldDescriptor fd; |
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|
1716 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1717 if (!gotFd) { |
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|
1718 return NULL; |
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|
1719 } |
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|
1720 |
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|
1721 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1722 JVM_END |
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1723 |
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1724 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1725 if (!cp->is_within_bounds(index)) { |
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1726 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1727 } |
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|
1728 } |
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|
1729 |
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1730 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1731 { |
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|
1732 JVMWrapper("JVM_GetMethodParameters"); |
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1733 // method is a handle to a java.lang.reflect.Method object |
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1734 Method* method_ptr = jvm_get_method_common(method); |
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1735 methodHandle mh (THREAD, method_ptr); |
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|
1736 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1737 const int num_params = mh->method_parameters_length(); |
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1738 |
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1739 if (0 != num_params) { |
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1740 // make sure all the symbols are properly formatted |
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1741 for (int i = 0; i < num_params; i++) { |
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1742 MethodParametersElement* params = mh->method_parameters_start(); |
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1743 int index = params[i].name_cp_index; |
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|
1744 bounds_check(mh->constants(), index, CHECK_NULL); |
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1745 |
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|
1746 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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|
1747 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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|
1748 "Wrong type at constant pool index"); |
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|
1749 } |
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1750 |
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|
1751 } |
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1752 |
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|
1753 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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|
1754 objArrayHandle result (THREAD, result_oop); |
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|
1755 |
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1756 for (int i = 0; i < num_params; i++) { |
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|
1757 MethodParametersElement* params = mh->method_parameters_start(); |
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|
1758 // For a 0 index, give a NULL symbol |
10265
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1759 Symbol* sym = 0 != params[i].name_cp_index ? |
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1760 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1761 int flags = params[i].flags; |
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1762 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1763 flags, CHECK_NULL); |
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1764 result->obj_at_put(i, param); |
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1765 } |
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1766 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1767 } else { |
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1768 return (jobjectArray)NULL; |
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1769 } |
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1770 } |
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1771 JVM_END |
0 | 1772 |
1773 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1774 | |
1775 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1776 { | |
1777 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1778 JvmtiVMObjectAllocEventCollector oam; | |
1779 | |
1780 // Exclude primitive types and array types | |
1781 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1782 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1783 // Return empty array |
1142 | 1784 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1785 return (jobjectArray) JNIHandles::make_local(env, res); |
1786 } | |
1787 | |
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1788 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1789 constantPoolHandle cp(THREAD, k->constants()); |
1790 | |
1791 // Ensure class is linked | |
1792 k->link_class(CHECK_NULL); | |
1793 | |
1794 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1795 bool skip_backtrace = false; | |
1796 | |
1797 // Allocate result | |
1798 int num_fields; | |
1799 | |
1800 if (publicOnly) { | |
1801 num_fields = 0; | |
3938 | 1802 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1803 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1804 } |
1805 } else { | |
3938 | 1806 num_fields = k->java_fields_count(); |
0 | 1807 |
1142 | 1808 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1809 num_fields--; |
1810 skip_backtrace = true; | |
1811 } | |
1812 } | |
1813 | |
1142 | 1814 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1815 objArrayHandle result (THREAD, r); |
1816 | |
1817 int out_idx = 0; | |
1818 fieldDescriptor fd; | |
3938 | 1819 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1820 if (skip_backtrace) { |
1821 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1822 int offset = fs.offset(); |
0 | 1823 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1824 } | |
1825 | |
3938 | 1826 if (!publicOnly || fs.access_flags().is_public()) { |
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1827 fd.reinitialize(k(), fs.index()); |
0 | 1828 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1829 result->obj_at_put(out_idx, field); | |
1830 ++out_idx; | |
1831 } | |
1832 } | |
1833 assert(out_idx == num_fields, "just checking"); | |
1834 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1835 } | |
1836 JVM_END | |
1837 | |
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1838 static bool select_method(methodHandle method, bool want_constructor) { |
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1839 if (want_constructor) { |
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1840 return (method->is_initializer() && !method->is_static()); |
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1841 } else { |
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1842 return (!method->is_initializer() && !method->is_overpass()); |
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1843 } |
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1844 } |
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1845 |
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1846 static jobjectArray get_class_declared_methods_helper( |
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1847 JNIEnv *env, |
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1848 jclass ofClass, jboolean publicOnly, |
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1849 bool want_constructor, |
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1850 Klass* klass, TRAPS) { |
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1851 |
0 | 1852 JvmtiVMObjectAllocEventCollector oam; |
1853 | |
1854 // Exclude primitive types and array types | |
1855 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1856 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1857 // Return empty array |
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1858 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1859 return (jobjectArray) JNIHandles::make_local(env, res); |
1860 } | |
1861 | |
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1862 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1863 |
1864 // Ensure class is linked | |
1865 k->link_class(CHECK_NULL); | |
1866 | |
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1867 Array<Method*>* methods = k->methods(); |
0 | 1868 int methods_length = methods->length(); |
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1869 |
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1870 // Save original method_idnum in case of redefinition, which can change |
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1871 // the idnum of obsolete methods. The new method will have the same idnum |
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1872 // but if we refresh the methods array, the counts will be wrong. |
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1873 ResourceMark rm(THREAD); |
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1874 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1875 int num_methods = 0; |
1876 | |
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1877 for (int i = 0; i < methods_length; i++) { |
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1878 methodHandle method(THREAD, methods->at(i)); |
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1879 if (select_method(method, want_constructor)) { |
0 | 1880 if (!publicOnly || method->is_public()) { |
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1881 idnums->push(method->method_idnum()); |
0 | 1882 ++num_methods; |
1883 } | |
1884 } | |
1885 } | |
1886 | |
1887 // Allocate result | |
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1888 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1889 objArrayHandle result (THREAD, r); |
1890 | |
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1891 // Now just put the methods that we selected above, but go by their idnum |
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1892 // in case of redefinition. The methods can be redefined at any safepoint, |
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1893 // so above when allocating the oop array and below when creating reflect |
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1894 // objects. |
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1895 for (int i = 0; i < num_methods; i++) { |
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1896 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1897 if (method.is_null()) { |
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1898 // Method may have been deleted and seems this API can handle null |
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1899 // Otherwise should probably put a method that throws NSME |
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1900 result->obj_at_put(i, NULL); |
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1901 } else { |
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1902 oop m; |
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1903 if (want_constructor) { |
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1904 m = Reflection::new_constructor(method, CHECK_NULL); |
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1905 } else { |
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1906 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1907 } |
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1908 result->obj_at_put(i, m); |
0 | 1909 } |
1910 } | |
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1911 |
0 | 1912 return (jobjectArray) JNIHandles::make_local(env, result()); |
1913 } | |
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1914 |
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1915 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1916 { |
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1917 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1918 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1919 /*want_constructor*/ false, |
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1920 SystemDictionary::reflect_Method_klass(), THREAD); |
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1921 } |
0 | 1922 JVM_END |
1923 | |
1924 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1925 { | |
1926 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1927 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1928 /*want_constructor*/ true, |
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1929 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1930 } |
1931 JVM_END | |
1932 | |
1933 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1934 { | |
1935 JVMWrapper("JVM_GetClassAccessFlags"); | |
1936 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1937 // Primitive type | |
1938 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1939 } | |
1940 | |
6983 | 1941 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1942 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1943 } | |
1944 JVM_END | |
1945 | |
1946 | |
1947 // Constant pool access ////////////////////////////////////////////////////////// | |
1948 | |
1949 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1950 { | |
1951 JVMWrapper("JVM_GetClassConstantPool"); | |
1952 JvmtiVMObjectAllocEventCollector oam; | |
1953 | |
1954 // Return null for primitives and arrays | |
1955 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1956 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1957 if (k->oop_is_instance()) { |
0 | 1958 instanceKlassHandle k_h(THREAD, k); |
1959 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1960 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1961 return JNIHandles::make_local(jcp()); |
1962 } | |
1963 } | |
1964 return NULL; | |
1965 } | |
1966 JVM_END | |
1967 | |
1968 | |
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1969 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1970 { |
1971 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1972 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1973 return cp->length(); |
1974 } | |
1975 JVM_END | |
1976 | |
1977 | |
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1978 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1979 { |
1980 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1981 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1982 bounds_check(cp, index, CHECK_NULL); |
1983 constantTag tag = cp->tag_at(index); | |
1984 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1985 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1986 } | |
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1987 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1988 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1989 } |
1990 JVM_END | |
1991 | |
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1992 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1993 { |
1994 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1995 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1996 bounds_check(cp, index, CHECK_NULL); |
1997 constantTag tag = cp->tag_at(index); | |
1998 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1999 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2000 } | |
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2001 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2002 if (k == NULL) return NULL; |
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2003 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2004 } |
2005 JVM_END | |
2006 | |
2007 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2008 constantTag tag = cp->tag_at(index); | |
2009 if (!tag.is_method() && !tag.is_interface_method()) { | |
2010 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2011 } | |
2012 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2013 Klass* k_o; |
0 | 2014 if (force_resolution) { |
2015 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2016 } else { | |
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2017 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2018 if (k_o == NULL) return NULL; |
2019 } | |
2020 instanceKlassHandle k(THREAD, k_o); | |
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2021 Symbol* name = cp->uncached_name_ref_at(index); |
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2022 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2023 methodHandle m (THREAD, k->find_method(name, sig)); |
2024 if (m.is_null()) { | |
2025 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2026 } | |
2027 oop method; | |
2028 if (!m->is_initializer() || m->is_static()) { | |
2029 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2030 } else { | |
2031 method = Reflection::new_constructor(m, CHECK_NULL); | |
2032 } | |
2033 return JNIHandles::make_local(method); | |
2034 } | |
2035 | |
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2036 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2037 { |
2038 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2039 JvmtiVMObjectAllocEventCollector oam; | |
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2040 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2041 bounds_check(cp, index, CHECK_NULL); |
2042 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2043 return res; | |
2044 } | |
2045 JVM_END | |
2046 | |
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2047 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2048 { |
2049 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2050 JvmtiVMObjectAllocEventCollector oam; | |
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2051 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2052 bounds_check(cp, index, CHECK_NULL); |
2053 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2054 return res; | |
2055 } | |
2056 JVM_END | |
2057 | |
2058 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2059 constantTag tag = cp->tag_at(index); | |
2060 if (!tag.is_field()) { | |
2061 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2062 } | |
2063 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2064 Klass* k_o; |
0 | 2065 if (force_resolution) { |
2066 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2067 } else { | |
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2068 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2069 if (k_o == NULL) return NULL; |
2070 } | |
2071 instanceKlassHandle k(THREAD, k_o); | |
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2072 Symbol* name = cp->uncached_name_ref_at(index); |
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2073 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2074 fieldDescriptor fd; |
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2075 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2076 if (target_klass == NULL) { |
2077 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2078 } | |
2079 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2080 return JNIHandles::make_local(field); | |
2081 } | |
2082 | |
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2083 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2084 { |
2085 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2086 JvmtiVMObjectAllocEventCollector oam; | |
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2087 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2088 bounds_check(cp, index, CHECK_NULL); |
2089 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2090 return res; | |
2091 } | |
2092 JVM_END | |
2093 | |
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2094 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2095 { |
2096 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2097 JvmtiVMObjectAllocEventCollector oam; | |
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2098 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2099 bounds_check(cp, index, CHECK_NULL); |
2100 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2101 return res; | |
2102 } | |
2103 JVM_END | |
2104 | |
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2105 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2106 { |
2107 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2108 JvmtiVMObjectAllocEventCollector oam; | |
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2109 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2110 bounds_check(cp, index, CHECK_NULL); |
2111 constantTag tag = cp->tag_at(index); | |
2112 if (!tag.is_field_or_method()) { | |
2113 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2114 } | |
2115 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2116 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2117 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2118 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2119 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2120 objArrayHandle dest(THREAD, dest_o); |
2121 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2122 dest->obj_at_put(0, str()); | |
2123 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2124 dest->obj_at_put(1, str()); | |
2125 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2126 dest->obj_at_put(2, str()); | |
2127 return (jobjectArray) JNIHandles::make_local(dest()); | |
2128 } | |
2129 JVM_END | |
2130 | |
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2131 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2132 { |
2133 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2134 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2135 bounds_check(cp, index, CHECK_0); |
2136 constantTag tag = cp->tag_at(index); | |
2137 if (!tag.is_int()) { | |
2138 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2139 } | |
2140 return cp->int_at(index); | |
2141 } | |
2142 JVM_END | |
2143 | |
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2144 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2145 { |
2146 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2147 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2148 bounds_check(cp, index, CHECK_(0L)); |
2149 constantTag tag = cp->tag_at(index); | |
2150 if (!tag.is_long()) { | |
2151 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2152 } | |
2153 return cp->long_at(index); | |
2154 } | |
2155 JVM_END | |
2156 | |
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2157 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2158 { |
2159 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2160 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2161 bounds_check(cp, index, CHECK_(0.0f)); |
2162 constantTag tag = cp->tag_at(index); | |
2163 if (!tag.is_float()) { | |
2164 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2165 } | |
2166 return cp->float_at(index); | |
2167 } | |
2168 JVM_END | |
2169 | |
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2170 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2171 { |
2172 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2173 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2174 bounds_check(cp, index, CHECK_(0.0)); |
2175 constantTag tag = cp->tag_at(index); | |
2176 if (!tag.is_double()) { | |
2177 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2178 } | |
2179 return cp->double_at(index); | |
2180 } | |
2181 JVM_END | |
2182 | |
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2183 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2184 { |
2185 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2186 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2187 bounds_check(cp, index, CHECK_NULL); |
2188 constantTag tag = cp->tag_at(index); | |
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2189 if (!tag.is_string()) { |
0 | 2190 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2191 } | |
2192 oop str = cp->string_at(index, CHECK_NULL); | |
2193 return (jstring) JNIHandles::make_local(str); | |
2194 } | |
2195 JVM_END | |
2196 | |
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2197 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2198 { |
2199 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2200 JvmtiVMObjectAllocEventCollector oam; | |
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2201 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2202 bounds_check(cp, index, CHECK_NULL); |
2203 constantTag tag = cp->tag_at(index); | |
2204 if (!tag.is_symbol()) { | |
2205 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2206 } | |
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2207 Symbol* sym = cp->symbol_at(index); |
0 | 2208 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2209 return (jstring) JNIHandles::make_local(str()); | |
2210 } | |
2211 JVM_END | |
2212 | |
2213 | |
2214 // Assertion support. ////////////////////////////////////////////////////////// | |
2215 | |
2216 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2217 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2218 assert(cls != NULL, "bad class"); | |
2219 | |
2220 oop r = JNIHandles::resolve(cls); | |
2221 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2222 if (java_lang_Class::is_primitive(r)) return false; | |
2223 | |
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2224 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2225 assert(k->oop_is_instance(), "must be an instance klass"); |
2226 if (! k->oop_is_instance()) return false; | |
0 | 2227 |
2228 ResourceMark rm(THREAD); | |
6983 | 2229 const char* name = k->name()->as_C_string(); |
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2230 bool system_class = k->class_loader() == NULL GRAAL_ONLY(|| SystemDictionary::graal_loader() == k->class_loader()); |
0 | 2231 return JavaAssertions::enabled(name, system_class); |
2232 | |
2233 JVM_END | |
2234 | |
2235 | |
2236 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2237 // command-line assertion arguments (i.e., -ea, -da). | |
2238 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2239 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2240 JvmtiVMObjectAllocEventCollector oam; | |
2241 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2242 return JNIHandles::make_local(env, asd); | |
2243 JVM_END | |
2244 | |
2245 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2246 | |
2247 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2248 | |
2249 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2250 // All functions from this section should call the jvmtiThreadSate function: | |
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2251 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2252 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2253 // was invoked in the middle of the class redefinition. |
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2254 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2255 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2256 | |
2257 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2258 JVMWrapper("JVM_GetClassNameUTF"); | |
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2259 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2260 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2261 return k->name()->as_utf8(); |
0 | 2262 JVM_END |
2263 | |
2264 | |
2265 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2266 JVMWrapper("JVM_GetClassCPTypes"); | |
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2267 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2268 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2269 // types will have length zero if this is not an InstanceKlass |
0 | 2270 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2271 if (k->oop_is_instance()) { |
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2272 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2273 for (int index = cp->length() - 1; index >= 0; index--) { |
2274 constantTag tag = cp->tag_at(index); | |
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2275 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2276 } |
2277 } | |
2278 JVM_END | |
2279 | |
2280 | |
2281 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2282 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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|
2283 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2284 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2285 if (!k->oop_is_instance()) |
0 | 2286 return 0; |
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2287 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2288 JVM_END |
2289 | |
2290 | |
2291 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2292 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2293 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2294 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2295 if (!k->oop_is_instance()) |
0 | 2296 return 0; |
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2297 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2298 JVM_END |
2299 | |
2300 | |
2301 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2302 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2303 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2304 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2305 if (!k->oop_is_instance()) |
0 | 2306 return 0; |
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2307 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2308 JVM_END |
2309 | |
2310 | |
2311 // The following methods, used for the verifier, are never called with | |
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2312 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2313 // Typically, these methods are called in a loop with bounds determined |
2314 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2315 // zero for arrays. | |
2316 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2317 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2318 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2319 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2320 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2321 int length = method->checked_exceptions_length(); |
0 | 2322 if (length > 0) { |
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2323 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2324 for (int i = 0; i < length; i++) { |
2325 exceptions[i] = table[i].class_cp_index; | |
2326 } | |
2327 } | |
2328 JVM_END | |
2329 | |
2330 | |
2331 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2332 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2333 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2334 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2335 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2336 return method->checked_exceptions_length(); |
0 | 2337 JVM_END |
2338 | |
2339 | |
2340 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2341 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2342 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2343 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2344 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2345 memcpy(code, method->code_base(), method->code_size()); |
0 | 2346 JVM_END |
2347 | |
2348 | |
2349 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2350 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2351 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2352 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2353 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2354 return method->code_size(); |
0 | 2355 JVM_END |
2356 | |
2357 | |
2358 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2359 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2360 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2362 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2363 ExceptionTable extable(method); |
6213
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2364 entry->start_pc = extable.start_pc(entry_index); |
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2365 entry->end_pc = extable.end_pc(entry_index); |
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2366 entry->handler_pc = extable.handler_pc(entry_index); |
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2367 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2368 JVM_END |
2369 | |
2370 | |
2371 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2372 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2373 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2374 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2375 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2376 return method->exception_table_length(); |
0 | 2377 JVM_END |
2378 | |
2379 | |
2380 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2381 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2382 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2383 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2384 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2385 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2386 JVM_END |
2387 | |
2388 | |
2389 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2390 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2391 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2392 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2393 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2394 JVM_END |
2395 | |
2396 | |
2397 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2398 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2399 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2400 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2401 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2402 return method->max_locals(); |
0 | 2403 JVM_END |
2404 | |
2405 | |
2406 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2407 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2408 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2409 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2410 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2411 return method->size_of_parameters(); |
0 | 2412 JVM_END |
2413 | |
2414 | |
2415 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2416 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2417 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2418 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2419 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2420 return method->verifier_max_stack(); |
0 | 2421 JVM_END |
2422 | |
2423 | |
2424 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2425 JVMWrapper("JVM_IsConstructorIx"); | |
2426 ResourceMark rm(THREAD); | |
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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->name() == vmSymbols::object_initializer_name(); |
0 | 2431 JVM_END |
2432 | |
2433 | |
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|
2434 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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|
2435 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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|
2436 ResourceMark rm(THREAD); |
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|
2437 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2438 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2439 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2440 return method->is_overpass(); |
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|
2441 JVM_END |
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2442 |
0 | 2443 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2444 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2445 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2446 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2447 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2448 return method->name()->as_utf8(); |
0 | 2449 JVM_END |
2450 | |
2451 | |
2452 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2453 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2454 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2455 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2456 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2457 return method->signature()->as_utf8(); |
0 | 2458 JVM_END |
2459 | |
2460 /** | |
2461 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2462 * read entries in the constant pool. Since the old verifier always | |
2463 * works on a copy of the code, it will not see any rewriting that | |
2464 * may possibly occur in the middle of verification. So it is important | |
2465 * that nothing it calls tries to use the cpCache instead of the raw | |
2466 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2467 */ | |
2468 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2469 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2470 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2471 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2472 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2473 switch (cp->tag_at(cp_index).value()) { |
2474 case JVM_CONSTANT_Fieldref: | |
2475 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2476 default: | |
2477 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2478 } | |
2479 ShouldNotReachHere(); | |
2480 return NULL; | |
2481 JVM_END | |
2482 | |
2483 | |
2484 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2485 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2486 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2487 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2488 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2489 switch (cp->tag_at(cp_index).value()) { |
2490 case JVM_CONSTANT_InterfaceMethodref: | |
2491 case JVM_CONSTANT_Methodref: | |
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diff
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|
2492 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2493 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2494 default: | |
2495 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2496 } | |
2497 ShouldNotReachHere(); | |
2498 return NULL; | |
2499 JVM_END | |
2500 | |
2501 | |
2502 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2503 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2504 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2505 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2506 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2507 switch (cp->tag_at(cp_index).value()) { |
2508 case JVM_CONSTANT_InterfaceMethodref: | |
2509 case JVM_CONSTANT_Methodref: | |
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2510 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2511 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2512 default: | |
2513 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2514 } | |
2515 ShouldNotReachHere(); | |
2516 return NULL; | |
2517 JVM_END | |
2518 | |
2519 | |
2520 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2521 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2522 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2523 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2524 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2525 switch (cp->tag_at(cp_index).value()) { |
2526 case JVM_CONSTANT_Fieldref: | |
2527 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2528 default: | |
2529 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2530 } | |
2531 ShouldNotReachHere(); | |
2532 return NULL; | |
2533 JVM_END | |
2534 | |
2535 | |
2536 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2537 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2538 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2539 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2540 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2541 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2542 return classname->as_utf8(); |
2543 JVM_END | |
2544 | |
2545 | |
2546 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2547 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2548 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2549 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2550 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2551 switch (cp->tag_at(cp_index).value()) { |
2552 case JVM_CONSTANT_Fieldref: { | |
2553 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2554 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2555 return classname->as_utf8(); |
2556 } | |
2557 default: | |
2558 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2559 } | |
2560 ShouldNotReachHere(); | |
2561 return NULL; | |
2562 JVM_END | |
2563 | |
2564 | |
2565 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2566 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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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_Methodref: | |
2572 case JVM_CONSTANT_InterfaceMethodref: { | |
2573 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2574 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2575 return classname->as_utf8(); |
2576 } | |
2577 default: | |
2578 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2579 } | |
2580 ShouldNotReachHere(); | |
2581 return NULL; | |
2582 JVM_END | |
2583 | |
2584 | |
3938 | 2585 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2586 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2587 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2588 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2589 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2590 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2591 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2592 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2593 switch (cp->tag_at(cp_index).value()) { |
2594 case JVM_CONSTANT_Fieldref: { | |
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2595 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2596 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2597 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2598 if (fs.name() == name && fs.signature() == signature) { | |
2599 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2600 } |
2601 } | |
2602 return -1; | |
2603 } | |
2604 default: | |
2605 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2606 } | |
2607 ShouldNotReachHere(); | |
2608 return 0; | |
2609 JVM_END | |
2610 | |
2611 | |
2612 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2613 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2614 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2615 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2616 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2617 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2618 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2619 switch (cp->tag_at(cp_index).value()) { |
2620 case JVM_CONSTANT_Methodref: | |
2621 case JVM_CONSTANT_InterfaceMethodref: { | |
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|
2622 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2623 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2624 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2625 int methods_count = methods->length(); |
2626 for (int i = 0; i < methods_count; i++) { | |
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2627 Method* method = methods->at(i); |
0 | 2628 if (method->name() == name && method->signature() == signature) { |
2629 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2630 } | |
2631 } | |
2632 return -1; | |
2633 } | |
2634 default: | |
2635 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2636 } | |
2637 ShouldNotReachHere(); | |
2638 return 0; | |
2639 JVM_END | |
2640 | |
2641 | |
2642 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2643 | |
2644 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2645 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2646 JVM_END | |
2647 | |
2648 | |
2649 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2650 JVMWrapper("JVM_IsSameClassPackage"); | |
2651 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2652 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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|
2653 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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|
2654 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2655 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2656 JVM_END | |
2657 | |
2658 | |
2659 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2660 | |
2661 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2662 JVMWrapper2("JVM_Open (%s)", fname); | |
2663 | |
2664 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2665 int result = os::open(fname, flags, mode); |
0 | 2666 if (result >= 0) { |
2667 return result; | |
2668 } else { | |
2669 switch(errno) { | |
2670 case EEXIST: | |
2671 return JVM_EEXIST; | |
2672 default: | |
2673 return -1; | |
2674 } | |
2675 } | |
2676 JVM_END | |
2677 | |
2678 | |
2679 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2680 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2681 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2682 return os::close(fd); |
0 | 2683 JVM_END |
2684 | |
2685 | |
2686 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2687 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2688 | |
2689 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2690 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2691 JVM_END |
2692 | |
2693 | |
2694 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2695 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2696 | |
2697 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2698 return (jint)os::write(fd, buf, nbytes); |
0 | 2699 JVM_END |
2700 | |
2701 | |
2702 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2703 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2704 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2705 return os::available(fd, pbytes); |
0 | 2706 JVM_END |
2707 | |
2708 | |
2709 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2710 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2711 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2712 return os::lseek(fd, offset, whence); |
0 | 2713 JVM_END |
2714 | |
2715 | |
2716 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2717 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2718 return os::ftruncate(fd, length); |
0 | 2719 JVM_END |
2720 | |
2721 | |
2722 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2723 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2724 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2725 return os::fsync(fd); |
0 | 2726 JVM_END |
2727 | |
2728 | |
2729 // Printing support ////////////////////////////////////////////////// | |
2730 extern "C" { | |
2731 | |
2732 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2733 // see bug 4399518, 4417214 | |
2734 if ((intptr_t)count <= 0) return -1; | |
2735 return vsnprintf(str, count, fmt, args); | |
2736 } | |
2737 | |
2738 | |
2739 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2740 va_list args; | |
2741 int len; | |
2742 va_start(args, fmt); | |
2743 len = jio_vsnprintf(str, count, fmt, args); | |
2744 va_end(args); | |
2745 return len; | |
2746 } | |
2747 | |
2748 | |
2749 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2750 int len; | |
2751 va_list args; | |
2752 va_start(args, fmt); | |
2753 len = jio_vfprintf(f, fmt, args); | |
2754 va_end(args); | |
2755 return len; | |
2756 } | |
2757 | |
2758 | |
2759 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2760 if (Arguments::vfprintf_hook() != NULL) { | |
2761 return Arguments::vfprintf_hook()(f, fmt, args); | |
2762 } else { | |
2763 return vfprintf(f, fmt, args); | |
2764 } | |
2765 } | |
2766 | |
2767 | |
2191 | 2768 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2769 int len; |
2770 va_list args; | |
2771 va_start(args, fmt); | |
2772 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2773 va_end(args); | |
2774 return len; | |
2775 } | |
2776 | |
2777 | |
2778 // HotSpot specific jio method | |
2779 void jio_print(const char* s) { | |
2780 // Try to make this function as atomic as possible. | |
2781 if (Arguments::vfprintf_hook() != NULL) { | |
2782 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2783 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2784 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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431
diff
changeset
|
2785 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2786 } |
2787 } | |
2788 | |
2789 } // Extern C | |
2790 | |
2791 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2792 | |
2793 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2794 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2795 // OSThread objects. The exception to this rule is when the target object is the thread | |
2796 // doing the operation, in which case we know that the thread won't exit until the | |
2797 // operation is done (all exits being voluntary). There are a few cases where it is | |
2798 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2799 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2800 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2801 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2802 // implementation is local to this file, we always lock Threads_lock for that one. | |
2803 | |
2804 static void thread_entry(JavaThread* thread, TRAPS) { | |
2805 HandleMark hm(THREAD); | |
2806 Handle obj(THREAD, thread->threadObj()); | |
2807 JavaValue result(T_VOID); | |
2808 JavaCalls::call_virtual(&result, | |
2809 obj, | |
1142 | 2810 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
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|
2811 vmSymbols::run_method_name(), |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2812 vmSymbols::void_method_signature(), |
0 | 2813 THREAD); |
2814 } | |
2815 | |
2816 | |
2817 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2818 JVMWrapper("JVM_StartThread"); | |
2819 JavaThread *native_thread = NULL; | |
2820 | |
2821 // We cannot hold the Threads_lock when we throw an exception, | |
2822 // due to rank ordering issues. Example: we might need to grab the | |
2823 // Heap_lock while we construct the exception. | |
2824 bool throw_illegal_thread_state = false; | |
2825 | |
2826 // We must release the Threads_lock before we can post a jvmti event | |
2827 // in Thread::start. | |
2828 { | |
2829 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2830 // we operate. | |
2831 MutexLocker mu(Threads_lock); | |
2832 | |
2162
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
|
2833 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2834 // re-starting an already started thread, so we should usually find |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2835 // that the JavaThread is null. However for a JNI attached thread |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2836 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2837 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2838 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2839 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2840 throw_illegal_thread_state = true; |
0 | 2841 } else { |
2162
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
|
2842 // We could also check the stillborn flag to see if this thread was already stopped, but |
ccfcb502af3f
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dholmes
parents:
1980
diff
changeset
|
2843 // for historical reasons we let the thread detect that itself when it starts running |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2844 |
0 | 2845 jlong size = |
2846 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2847 // Allocate the C++ Thread structure and create the native thread. The | |
2848 // stack size retrieved from java is signed, but the constructor takes | |
2849 // size_t (an unsigned type), so avoid passing negative values which would | |
2850 // result in really large stacks. | |
2851 size_t sz = size > 0 ? (size_t) size : 0; | |
2852 native_thread = new JavaThread(&thread_entry, sz); | |
2853 | |
2854 // At this point it may be possible that no osthread was created for the | |
2855 // JavaThread due to lack of memory. Check for this situation and throw | |
2856 // an exception if necessary. Eventually we may want to change this so | |
2857 // that we only grab the lock if the thread was created successfully - | |
2858 // then we can also do this check and throw the exception in the | |
2859 // JavaThread constructor. | |
2860 if (native_thread->osthread() != NULL) { | |
2861 // Note: the current thread is not being used within "prepare". | |
2862 native_thread->prepare(jthread); | |
2863 } | |
2864 } | |
2865 } | |
2866 | |
2867 if (throw_illegal_thread_state) { | |
2868 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2869 } | |
2870 | |
2871 assert(native_thread != NULL, "Starting null thread?"); | |
2872 | |
2873 if (native_thread->osthread() == NULL) { | |
2874 // No one should hold a reference to the 'native_thread'. | |
2875 delete native_thread; | |
2876 if (JvmtiExport::should_post_resource_exhausted()) { | |
2877 JvmtiExport::post_resource_exhausted( | |
2878 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
14909 | 2879 "unable to create new native thread"); |
0 | 2880 } |
2881 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
14909 | 2882 "unable to create new native thread"); |
0 | 2883 } |
2884 | |
2885 Thread::start(native_thread); | |
2886 | |
2887 JVM_END | |
2888 | |
2889 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2890 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2891 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
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dholmes
parents:
1980
diff
changeset
|
2892 // same thread as the sender, no safepoint is needed. |
0 | 2893 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2894 JVMWrapper("JVM_StopThread"); | |
2895 | |
2896 oop java_throwable = JNIHandles::resolve(throwable); | |
2897 if (java_throwable == NULL) { | |
2898 THROW(vmSymbols::java_lang_NullPointerException()); | |
2899 } | |
2900 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2901 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2902 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2903 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2904 receiver, (address)java_thread, throwable); |
2162
ccfcb502af3f
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1980
diff
changeset
|
2905 // First check if thread is alive |
0 | 2906 if (receiver != NULL) { |
2907 // Check if exception is getting thrown at self (use oop equality, since the | |
2908 // target object might exit) | |
2909 if (java_thread == thread->threadObj()) { | |
2910 THROW_OOP(java_throwable); | |
2911 } else { | |
2912 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2913 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2914 } | |
2915 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2916 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2917 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2918 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2919 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2920 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2921 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2922 // stillborn flag for the first case, and if the thread has already |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2923 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2924 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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1980
diff
changeset
|
2925 } |
0 | 2926 JVM_END |
2927 | |
2928 | |
2929 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2930 JVMWrapper("JVM_IsThreadAlive"); | |
2931 | |
2932 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2933 return java_lang_Thread::is_alive(thread_oop); | |
2934 JVM_END | |
2935 | |
2936 | |
2937 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2938 JVMWrapper("JVM_SuspendThread"); | |
2939 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2940 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2941 | |
2942 if (receiver != NULL) { | |
2943 // thread has run and has not exited (still on threads list) | |
2944 | |
2945 { | |
2946 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2947 if (receiver->is_external_suspend()) { | |
2948 // Don't allow nested external suspend requests. We can't return | |
2949 // an error from this interface so just ignore the problem. | |
2950 return; | |
2951 } | |
2952 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2953 return; | |
2954 } | |
2955 receiver->set_external_suspend(); | |
2956 } | |
2957 | |
2958 // java_suspend() will catch threads in the process of exiting | |
2959 // and will ignore them. | |
2960 receiver->java_suspend(); | |
2961 | |
2962 // It would be nice to have the following assertion in all the | |
2963 // time, but it is possible for a racing resume request to have | |
2964 // resumed this thread right after we suspended it. Temporarily | |
2965 // enable this assertion if you are chasing a different kind of | |
2966 // bug. | |
2967 // | |
2968 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2969 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2970 } | |
2971 JVM_END | |
2972 | |
2973 | |
2974 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2975 JVMWrapper("JVM_ResumeThread"); | |
2976 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2977 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2978 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2979 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2980 // looks at it. | |
2981 MutexLocker ml(Threads_lock); | |
2982 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2983 if (thr != NULL) { | |
2984 // the thread has run and is not in the process of exiting | |
2985 thr->java_resume(); | |
2986 } | |
2987 JVM_END | |
2988 | |
2989 | |
2990 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2991 JVMWrapper("JVM_SetThreadPriority"); | |
2992 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2993 MutexLocker ml(Threads_lock); | |
2994 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2995 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2996 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2997 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2998 Thread::set_priority(thr, (ThreadPriority)prio); | |
2999 } | |
3000 JVM_END | |
3001 | |
3002 | |
3003 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3004 JVMWrapper("JVM_Yield"); | |
3005 if (os::dont_yield()) return; | |
14909 | 3006 #ifndef USDT2 |
3007 HS_DTRACE_PROBE0(hotspot, thread__yield); | |
3008 #else /* USDT2 */ | |
4006 | 3009 HOTSPOT_THREAD_YIELD(); |
14909 | 3010 #endif /* USDT2 */ |
0 | 3011 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3012 // Critical for similar threading behaviour | |
3013 if (ConvertYieldToSleep) { | |
3014 os::sleep(thread, MinSleepInterval, false); | |
3015 } else { | |
3016 os::yield(); | |
3017 } | |
3018 JVM_END | |
3019 | |
3020 | |
3021 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3022 JVMWrapper("JVM_Sleep"); | |
3023 | |
3024 if (millis < 0) { | |
3025 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3026 } | |
3027 | |
3028 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3029 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3030 } | |
3031 | |
3032 // Save current thread state and restore it at the end of this block. | |
3033 // And set new thread state to SLEEPING. | |
3034 JavaThreadSleepState jtss(thread); | |
3035 | |
14909 | 3036 #ifndef USDT2 |
3037 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); | |
3038 #else /* USDT2 */ | |
3039 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3040 millis); | |
3041 #endif /* USDT2 */ | |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3042 |
10405 | 3043 EventThreadSleep event; |
3044 | |
0 | 3045 if (millis == 0) { |
3046 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3047 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3048 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3049 // for SOLARIS | |
3050 if (ConvertSleepToYield) { | |
3051 os::yield(); | |
3052 } else { | |
3053 ThreadState old_state = thread->osthread()->get_state(); | |
3054 thread->osthread()->set_state(SLEEPING); | |
3055 os::sleep(thread, MinSleepInterval, false); | |
3056 thread->osthread()->set_state(old_state); | |
3057 } | |
3058 } else { | |
3059 ThreadState old_state = thread->osthread()->get_state(); | |
3060 thread->osthread()->set_state(SLEEPING); | |
3061 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3062 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3063 // us while we were sleeping. We do not overwrite those. | |
3064 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3065 if (event.should_commit()) { |
3066 event.set_time(millis); | |
3067 event.commit(); | |
3068 } | |
14909 | 3069 #ifndef USDT2 |
3070 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); | |
3071 #else /* USDT2 */ | |
3072 HOTSPOT_THREAD_SLEEP_END( | |
3073 1); | |
3074 #endif /* USDT2 */ | |
0 | 3075 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3076 // to properly restore the thread state. That's likely wrong. | |
3077 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3078 } | |
3079 } | |
3080 thread->osthread()->set_state(old_state); | |
3081 } | |
10405 | 3082 if (event.should_commit()) { |
3083 event.set_time(millis); | |
3084 event.commit(); | |
3085 } | |
14909 | 3086 #ifndef USDT2 |
3087 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); | |
3088 #else /* USDT2 */ | |
3089 HOTSPOT_THREAD_SLEEP_END( | |
3090 0); | |
3091 #endif /* USDT2 */ | |
0 | 3092 JVM_END |
3093 | |
3094 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3095 JVMWrapper("JVM_CurrentThread"); | |
3096 oop jthread = thread->threadObj(); | |
3097 assert (thread != NULL, "no current thread!"); | |
3098 return JNIHandles::make_local(env, jthread); | |
3099 JVM_END | |
3100 | |
3101 | |
3102 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3103 JVMWrapper("JVM_CountStackFrames"); | |
3104 | |
3105 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3106 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3107 bool throw_illegal_thread_state = false; | |
3108 int count = 0; | |
3109 | |
3110 { | |
3111 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3112 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3113 // acquire of the lock | |
3114 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3115 | |
3116 if (thr == NULL) { | |
3117 // do nothing | |
3118 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3119 // Check whether this java thread has been suspended already. If not, throws | |
3120 // IllegalThreadStateException. We defer to throw that exception until | |
3121 // Threads_lock is released since loading exception class has to leave VM. | |
3122 // The correct way to test a thread is actually suspended is | |
3123 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3124 // the Threads_lock. The above tests are sufficient for our purposes | |
3125 // provided the walkability of the stack is stable - which it isn't | |
3126 // 100% but close enough for most practical purposes. | |
3127 throw_illegal_thread_state = true; | |
3128 } else { | |
3129 // Count all java activation, i.e., number of vframes | |
3130 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3131 // Native frames are not counted | |
3132 if (!vfst.method()->is_native()) count++; | |
3133 } | |
3134 } | |
3135 } | |
3136 | |
3137 if (throw_illegal_thread_state) { | |
3138 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3139 "this thread is not suspended"); | |
3140 } | |
3141 return count; | |
3142 JVM_END | |
3143 | |
3144 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3145 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3146 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3147 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3148 // outside the critical section. Threads_lock is hot so we want to minimize | |
3149 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3150 // two steps. The 1st phase, performed under Threads_lock, would return | |
3151 // a closure that'd be invoked after Threads_lock was dropped. | |
3152 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3153 // admit spurious wakeups. | |
3154 | |
3155 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3156 JVMWrapper("JVM_Interrupt"); | |
3157 | |
3158 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3159 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3160 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3161 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3162 // acquire of the lock | |
3163 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3164 if (thr != NULL) { | |
3165 Thread::interrupt(thr); | |
3166 } | |
3167 JVM_END | |
3168 | |
3169 | |
3170 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3171 JVMWrapper("JVM_IsInterrupted"); | |
3172 | |
3173 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3174 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3175 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3176 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3177 // acquire of the lock | |
3178 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3179 if (thr == NULL) { | |
3180 return JNI_FALSE; | |
3181 } else { | |
3182 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3183 } | |
3184 JVM_END | |
3185 | |
3186 | |
3187 // Return true iff the current thread has locked the object passed in | |
3188 | |
3189 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3190 JVMWrapper("JVM_HoldsLock"); | |
3191 assert(THREAD->is_Java_thread(), "sanity check"); | |
3192 if (obj == NULL) { | |
3193 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3194 } | |
3195 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3196 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3197 JVM_END | |
3198 | |
3199 | |
3200 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3201 JVMWrapper("JVM_DumpAllStacks"); | |
3202 VM_PrintThreads op; | |
3203 VMThread::execute(&op); | |
3204 if (JvmtiExport::should_post_data_dump()) { | |
3205 JvmtiExport::post_data_dump(); | |
3206 } | |
3207 JVM_END | |
3208 | |
4006 | 3209 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3210 JVMWrapper("JVM_SetNativeThreadName"); | |
3211 ResourceMark rm(THREAD); | |
3212 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3213 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3214 // Thread naming only supported for the current thread, doesn't work for | |
3215 // target threads. | |
3216 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3217 // we don't set the name of an attached thread to avoid stepping | |
3218 // on other programs | |
3219 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3220 os::set_native_thread_name(thread_name); | |
3221 } | |
3222 JVM_END | |
0 | 3223 |
3224 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3225 | |
3226 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3227 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3228 if (jthread->privileged_stack_top() == NULL) return false; | |
3229 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3230 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3231 if (loader == NULL) return true; | |
3232 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3233 if (trusted) return true; | |
3234 } | |
3235 return false; | |
3236 } | |
3237 | |
3238 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3239 JVMWrapper("JVM_CurrentLoadedClass"); | |
3240 ResourceMark rm(THREAD); | |
3241 | |
3242 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3243 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3244 bool trusted = is_trusted_frame(thread, &vfst); | |
3245 if (trusted) return NULL; | |
3246 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3247 Method* m = vfst.method(); |
0 | 3248 if (!m->is_native()) { |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3249 InstanceKlass* holder = m->method_holder(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3250 oop loader = holder->class_loader(); |
0 | 3251 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3252 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3253 } |
3254 } | |
3255 } | |
3256 return NULL; | |
3257 JVM_END | |
3258 | |
3259 | |
3260 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3261 JVMWrapper("JVM_CurrentClassLoader"); | |
3262 ResourceMark rm(THREAD); | |
3263 | |
3264 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3265 | |
3266 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3267 bool trusted = is_trusted_frame(thread, &vfst); | |
3268 if (trusted) return NULL; | |
3269 | |
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3270 Method* m = vfst.method(); |
0 | 3271 if (!m->is_native()) { |
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|
3272 InstanceKlass* holder = m->method_holder(); |
0 | 3273 assert(holder->is_klass(), "just checking"); |
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3274 oop loader = holder->class_loader(); |
0 | 3275 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3276 return JNIHandles::make_local(env, loader); | |
3277 } | |
3278 } | |
3279 } | |
3280 return NULL; | |
3281 JVM_END | |
3282 | |
3283 | |
3284 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3285 JVMWrapper("JVM_GetClassContext"); | |
3286 ResourceMark rm(THREAD); | |
3287 JvmtiVMObjectAllocEventCollector oam; | |
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|
3288 vframeStream vfst(thread); |
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|
3289 |
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|
3290 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3291 // This must only be called from SecurityManager.getClassContext |
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|
3292 Method* m = vfst.method(); |
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3293 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3294 m->name() == vmSymbols::getClassContext_name() && |
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3295 m->signature() == vmSymbols::void_class_array_signature())) { |
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3296 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3297 } |
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|
3298 } |
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|
3299 |
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|
3300 // Collect method holders |
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3301 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3302 for (; !vfst.at_end(); vfst.security_next()) { |
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3303 Method* m = vfst.method(); |
0 | 3304 // Native frames are not returned |
8866
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3305 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3306 Klass* holder = m->method_holder(); |
0 | 3307 assert(holder->is_klass(), "just checking"); |
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3308 klass_array->append(holder); |
0 | 3309 } |
3310 } | |
3311 | |
3312 // Create result array of type [Ljava/lang/Class; | |
11001
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3313 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3314 // Fill in mirrors corresponding to method holders |
11001
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|
3315 for (int i = 0; i < klass_array->length(); i++) { |
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changeset
|
3316 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3317 } |
3318 | |
3319 return (jobjectArray) JNIHandles::make_local(env, result); | |
3320 JVM_END | |
3321 | |
3322 | |
3323 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3324 JVMWrapper("JVM_ClassDepth"); | |
3325 ResourceMark rm(THREAD); | |
3326 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3327 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3328 | |
3329 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3330 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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|
3331 if (class_name_sym == NULL) { |
0 | 3332 return -1; |
3333 } | |
3334 | |
3335 int depth = 0; | |
3336 | |
3337 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3338 if (!vfst.method()->is_native()) { | |
6940
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changeset
|
3339 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3340 assert(holder->is_klass(), "just checking"); |
6940
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changeset
|
3341 if (holder->name() == class_name_sym) { |
0 | 3342 return depth; |
3343 } | |
3344 depth++; | |
3345 } | |
3346 } | |
3347 return -1; | |
3348 JVM_END | |
3349 | |
3350 | |
3351 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3352 JVMWrapper("JVM_ClassLoaderDepth"); | |
3353 ResourceMark rm(THREAD); | |
3354 int depth = 0; | |
3355 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3356 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3357 bool trusted = is_trusted_frame(thread, &vfst); | |
3358 if (trusted) return -1; | |
3359 | |
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|
3360 Method* m = vfst.method(); |
0 | 3361 if (!m->is_native()) { |
6940
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diff
changeset
|
3362 InstanceKlass* holder = m->method_holder(); |
0 | 3363 assert(holder->is_klass(), "just checking"); |
6940
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|
3364 oop loader = holder->class_loader(); |
0 | 3365 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3366 return depth; | |
3367 } | |
3368 depth++; | |
3369 } | |
3370 } | |
3371 return -1; | |
3372 JVM_END | |
3373 | |
3374 | |
3375 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3376 | |
3377 | |
3378 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3379 JVMWrapper("JVM_GetSystemPackage"); | |
3380 ResourceMark rm(THREAD); | |
3381 JvmtiVMObjectAllocEventCollector oam; | |
3382 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3383 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3384 return (jstring) JNIHandles::make_local(result); | |
3385 JVM_END | |
3386 | |
3387 | |
3388 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3389 JVMWrapper("JVM_GetSystemPackages"); | |
3390 JvmtiVMObjectAllocEventCollector oam; | |
3391 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3392 return (jobjectArray) JNIHandles::make_local(result); | |
3393 JVM_END | |
3394 | |
3395 | |
3396 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3397 | |
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3398 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3399 if (current_class == NULL) { |
3400 return true; | |
3401 } | |
3402 if ((current_class == field_class) || access.is_public()) { | |
3403 return true; | |
3404 } | |
3405 | |
3406 if (access.is_protected()) { | |
3407 // See if current_class is a subclass of field_class | |
6983 | 3408 if (current_class->is_subclass_of(field_class)) { |
0 | 3409 return true; |
3410 } | |
3411 } | |
3412 | |
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3413 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3414 } |
3415 | |
3416 | |
3417 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3418 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3419 JVMWrapper("JVM_AllocateNewObject"); | |
3420 JvmtiVMObjectAllocEventCollector oam; | |
3421 // Receiver is not used | |
3422 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3423 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3424 | |
3425 // Cannot instantiate primitive types | |
3426 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3427 ResourceMark rm(THREAD); | |
3428 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3429 } | |
3430 | |
3431 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3432 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3433 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3434 ResourceMark rm(THREAD); |
3435 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3436 } | |
3437 | |
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changeset
|
3438 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
da91efe96a93
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changeset
|
3439 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3440 |
3441 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3442 | |
3443 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3444 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3445 | |
3446 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3447 curr_klass->initialize(CHECK_NULL); | |
3448 | |
3449 methodHandle m (THREAD, | |
3450 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3451 vmSymbols::void_method_signature())); | |
3452 if (m.is_null()) { | |
3453 ResourceMark rm(THREAD); | |
3454 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3455 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3456 vmSymbols::object_initializer_name(), |
3457 vmSymbols::void_method_signature())); | |
3458 } | |
3459 | |
3460 if (curr_klass == init_klass && !m->is_public()) { | |
3461 // Calling the constructor for class 'curr_klass'. | |
3462 // Only allow calls to a public no-arg constructor. | |
3463 // This path corresponds to creating an Externalizable object. | |
3464 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3465 } | |
3466 | |
3467 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3468 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3469 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3470 } | |
3471 | |
3472 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3473 // Call constructor m. This might call a constructor higher up in the hierachy | |
3474 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3475 | |
3476 return JNIHandles::make_local(obj()); | |
3477 JVM_END | |
3478 | |
3479 | |
3480 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3481 JVMWrapper("JVM_AllocateNewArray"); | |
3482 JvmtiVMObjectAllocEventCollector oam; | |
3483 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3484 | |
3485 if (java_lang_Class::is_primitive(mirror)) { | |
3486 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3487 } | |
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|
3488 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3489 oop result; |
3490 | |
6725
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|
3491 if (k->oop_is_typeArray()) { |
0 | 3492 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3493 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
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|
3494 } else if (k->oop_is_objArray()) { |
0 | 3495 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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changeset
|
3496 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3497 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3498 result = oak->allocate(length, CHECK_NULL); | |
3499 } else { | |
3500 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3501 } | |
3502 return JNIHandles::make_local(env, result); | |
3503 JVM_END | |
3504 | |
3505 | |
3506 // Return the first non-null class loader up the execution stack, or null | |
3507 // if only code from the null class loader is on the stack. | |
3508 | |
3509 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3510 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3511 // UseNewReflection | |
3512 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
6940
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changeset
|
3513 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3514 if (loader != NULL) { |
3515 return JNIHandles::make_local(env, loader); | |
3516 } | |
3517 } | |
3518 return NULL; | |
3519 JVM_END | |
3520 | |
3521 | |
3522 // Load a class relative to the most recent class on the stack with a non-null | |
3523 // classloader. | |
3524 // This function has been deprecated and should not be considered part of the | |
3525 // specified JVM interface. | |
3526 | |
3527 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3528 jclass currClass, jstring currClassName)) | |
3529 JVMWrapper("JVM_LoadClass0"); | |
3530 // Receiver is not used | |
3531 ResourceMark rm(THREAD); | |
3532 | |
3533 // Class name argument is not guaranteed to be in internal format | |
3534 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3535 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3536 | |
3537 const char* str = java_lang_String::as_utf8_string(string()); | |
3538 | |
2177
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2162
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changeset
|
3539 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3540 // It's impossible to create this class; the name cannot fit |
3541 // into the constant pool. | |
3542 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3543 } | |
3544 | |
2177
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changeset
|
3545 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3546 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3547 // Find the most recent class on the stack with a non-null classloader | |
3548 oop loader = NULL; | |
3549 oop protection_domain = NULL; | |
3550 if (curr_klass.is_null()) { | |
3551 for (vframeStream vfst(thread); | |
3552 !vfst.at_end() && loader == NULL; | |
3553 vfst.next()) { | |
3554 if (!vfst.method()->is_native()) { | |
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3555 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
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coleenp
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6831
diff
changeset
|
3556 loader = holder->class_loader(); |
18fb7da42534
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coleenp
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6831
diff
changeset
|
3557 protection_domain = holder->protection_domain(); |
0 | 3558 } |
3559 } | |
3560 } else { | |
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changeset
|
3561 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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|
3562 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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|
3563 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3564 } |
3565 Handle h_loader(THREAD, loader); | |
3566 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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diff
changeset
|
3567 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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579
diff
changeset
|
3568 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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579
diff
changeset
|
3569 if (TraceClassResolution && result != NULL) { |
6725
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changeset
|
3570 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
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diff
changeset
|
3571 } |
715dceaa89b7
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changeset
|
3572 return result; |
0 | 3573 JVM_END |
3574 | |
3575 | |
3576 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3577 | |
3578 | |
3579 // resolve array handle and check arguments | |
3580 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3581 if (arr == NULL) { | |
3582 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3583 } | |
3584 oop a = JNIHandles::resolve_non_null(arr); | |
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|
3585 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3586 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3587 } | |
3588 return arrayOop(a); | |
3589 } | |
3590 | |
3591 | |
3592 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3593 JVMWrapper("JVM_GetArrayLength"); | |
3594 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3595 return a->length(); | |
3596 JVM_END | |
3597 | |
3598 | |
3599 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3600 JVMWrapper("JVM_Array_Get"); | |
3601 JvmtiVMObjectAllocEventCollector oam; | |
3602 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3603 jvalue value; | |
3604 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3605 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3606 return JNIHandles::make_local(env, box); | |
3607 JVM_END | |
3608 | |
3609 | |
3610 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3611 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3612 jvalue value; | |
3613 value.i = 0; // to initialize value before getting used in CHECK | |
3614 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3615 assert(a->is_typeArray(), "just checking"); | |
3616 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3617 BasicType wide_type = (BasicType) wCode; | |
3618 if (type != wide_type) { | |
3619 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3620 } | |
3621 return value; | |
3622 JVM_END | |
3623 | |
3624 | |
3625 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3626 JVMWrapper("JVM_SetArrayElement"); | |
3627 arrayOop a = check_array(env, arr, false, CHECK); | |
3628 oop box = JNIHandles::resolve(val); | |
3629 jvalue value; | |
3630 value.i = 0; // to initialize value before getting used in CHECK | |
3631 BasicType value_type; | |
3632 if (a->is_objArray()) { | |
3633 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3634 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3635 } else { | |
3636 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3637 } | |
3638 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3639 JVM_END | |
3640 | |
3641 | |
3642 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3643 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3644 arrayOop a = check_array(env, arr, true, CHECK); | |
3645 assert(a->is_typeArray(), "just checking"); | |
3646 BasicType value_type = (BasicType) vCode; | |
3647 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3648 JVM_END | |
3649 | |
3650 | |
3651 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3652 JVMWrapper("JVM_NewArray"); | |
3653 JvmtiVMObjectAllocEventCollector oam; | |
3654 oop element_mirror = JNIHandles::resolve(eltClass); | |
3655 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3656 return JNIHandles::make_local(env, result); | |
3657 JVM_END | |
3658 | |
3659 | |
3660 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3661 JVMWrapper("JVM_NewMultiArray"); | |
3662 JvmtiVMObjectAllocEventCollector oam; | |
3663 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3664 oop element_mirror = JNIHandles::resolve(eltClass); | |
3665 assert(dim_array->is_typeArray(), "just checking"); | |
3666 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3667 return JNIHandles::make_local(env, result); | |
3668 JVM_END | |
3669 | |
3670 | |
3671 // Networking library support //////////////////////////////////////////////////////////////////// | |
3672 | |
3673 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3674 JVMWrapper("JVM_InitializeSocketLibrary"); | |
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3675 return 0; |
0 | 3676 JVM_END |
3677 | |
3678 | |
3679 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3680 JVMWrapper("JVM_Socket"); | |
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3681 return os::socket(domain, type, protocol); |
0 | 3682 JVM_END |
3683 | |
3684 | |
3685 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3686 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3687 //%note jvm_r6 | |
1980
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3688 return os::socket_close(fd); |
0 | 3689 JVM_END |
3690 | |
3691 | |
3692 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3693 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3694 //%note jvm_r6 | |
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3695 return os::socket_shutdown(fd, howto); |
0 | 3696 JVM_END |
3697 | |
3698 | |
3699 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3700 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3701 //%note jvm_r6 | |
4717
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3702 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3703 JVM_END |
3704 | |
3705 | |
3706 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3707 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3708 //%note jvm_r6 | |
4717
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|
3709 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3710 JVM_END |
3711 | |
3712 | |
3713 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3714 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3715 //%note jvm_r6 | |
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|
3716 return os::timeout(fd, timeout); |
0 | 3717 JVM_END |
3718 | |
3719 | |
3720 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3721 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3722 //%note jvm_r6 | |
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|
3723 return os::listen(fd, count); |
0 | 3724 JVM_END |
3725 | |
3726 | |
3727 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3728 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3729 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
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diff
changeset
|
3730 return os::connect(fd, him, (socklen_t)len); |
0 | 3731 JVM_END |
3732 | |
3733 | |
3734 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3735 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3736 //%note jvm_r6 | |
4717
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diff
changeset
|
3737 return os::bind(fd, him, (socklen_t)len); |
0 | 3738 JVM_END |
3739 | |
3740 | |
3741 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3742 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3743 //%note jvm_r6 | |
4717
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|
3744 socklen_t socklen = (socklen_t)(*len); |
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7091417: recvfrom's 6th input should be of type socklen_t
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changeset
|
3745 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
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|
3746 *len = (jint)socklen; |
11c26bfcf8c7
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|
3747 return result; |
0 | 3748 JVM_END |
3749 | |
3750 | |
3751 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3752 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3753 //%note jvm_r6 | |
4717
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3754 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
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|
3755 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
11c26bfcf8c7
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3756 *fromlen = (int)socklen; |
11c26bfcf8c7
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|
3757 return result; |
0 | 3758 JVM_END |
3759 | |
3760 | |
3761 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3762 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3763 //%note jvm_r6 | |
4717
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|
3764 socklen_t socklen = (socklen_t)(*len); |
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|
3765 jint result = os::get_sock_name(fd, him, &socklen); |
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|
3766 *len = (int)socklen; |
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3767 return result; |
0 | 3768 JVM_END |
3769 | |
3770 | |
3771 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3772 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3773 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
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changeset
|
3774 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3775 JVM_END |
3776 | |
3777 | |
3778 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3779 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3780 //%note jvm_r6 | |
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3781 return os::socket_available(fd, pbytes); |
0 | 3782 JVM_END |
3783 | |
3784 | |
3785 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3786 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3787 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
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|
3788 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
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|
3789 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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|
3790 *optlen = (int)socklen; |
11c26bfcf8c7
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|
3791 return result; |
0 | 3792 JVM_END |
3793 | |
3794 | |
3795 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3796 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3797 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3798 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3799 JVM_END |
3800 | |
4717
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3801 |
0 | 3802 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3803 JVMWrapper("JVM_GetHostName"); | |
1980
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|
3804 return os::get_host_name(name, namelen); |
828eafbd85cc
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diff
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|
3805 JVM_END |
0 | 3806 |
4717
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3807 |
0 | 3808 // Library support /////////////////////////////////////////////////////////////////////////// |
3809 | |
3810 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3811 //%note jvm_ct | |
3812 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3813 char ebuf[1024]; | |
3814 void *load_result; | |
3815 { | |
3816 ThreadToNativeFromVM ttnfvm(thread); | |
1980
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|
3817 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3818 } |
3819 if (load_result == NULL) { | |
3820 char msg[1024]; | |
3821 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3822 // Since 'ebuf' may contain a string encoded using | |
3823 // platform encoding scheme, we need to pass | |
3824 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3825 // as the last argument. See bug 6367357. | |
3826 Handle h_exception = | |
3827 Exceptions::new_exception(thread, | |
3828 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3829 msg, Exceptions::unsafe_to_utf8); | |
3830 | |
3831 THROW_HANDLE_0(h_exception); | |
3832 } | |
3833 return load_result; | |
3834 JVM_END | |
3835 | |
3836 | |
3837 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3838 JVMWrapper("JVM_UnloadLibrary"); | |
1980
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diff
changeset
|
3839 os::dll_unload(handle); |
0 | 3840 JVM_END |
3841 | |
3842 | |
3843 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3844 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
3845 return os::dll_lookup(handle, name); |
0 | 3846 JVM_END |
3847 | |
4717
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|
3848 |
0 | 3849 // Floating point support //////////////////////////////////////////////////////////////////// |
3850 | |
3851 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3852 JVMWrapper("JVM_IsNaN"); | |
3853 return g_isnan(a); | |
3854 JVM_END | |
3855 | |
3856 | |
3857 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3858 | |
3859 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3860 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3861 return Threads::is_supported_jni_version_including_1_1(version); | |
3862 JVM_END | |
3863 | |
3864 | |
3865 // String support /////////////////////////////////////////////////////////////////////////// | |
3866 | |
3867 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3868 JVMWrapper("JVM_InternString"); | |
3869 JvmtiVMObjectAllocEventCollector oam; | |
3870 if (str == NULL) return NULL; | |
3871 oop string = JNIHandles::resolve_non_null(str); | |
3872 oop result = StringTable::intern(string, CHECK_NULL); | |
3873 return (jstring) JNIHandles::make_local(env, result); | |
3874 JVM_END | |
3875 | |
3876 | |
3877 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3878 | |
3879 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3880 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3881 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3882 // that only works with java threads. | |
3883 | |
3884 | |
3885 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3886 VM_Exit::block_if_vm_exited(); | |
3887 JVMWrapper("JVM_RawMonitorCreate"); | |
3888 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3889 } | |
3890 | |
3891 | |
3892 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3893 VM_Exit::block_if_vm_exited(); | |
3894 JVMWrapper("JVM_RawMonitorDestroy"); | |
3895 delete ((Mutex*) mon); | |
3896 } | |
3897 | |
3898 | |
3899 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3900 VM_Exit::block_if_vm_exited(); | |
3901 JVMWrapper("JVM_RawMonitorEnter"); | |
3902 ((Mutex*) mon)->jvm_raw_lock(); | |
3903 return 0; | |
3904 } | |
3905 | |
3906 | |
3907 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3908 VM_Exit::block_if_vm_exited(); | |
3909 JVMWrapper("JVM_RawMonitorExit"); | |
3910 ((Mutex*) mon)->jvm_raw_unlock(); | |
3911 } | |
3912 | |
3913 | |
3914 // Support for Serialization | |
3915 | |
3916 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3917 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3918 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3919 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3920 | |
3921 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3922 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3923 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3924 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3925 | |
3926 | |
3927 void initialize_converter_functions() { | |
3928 if (JDK_Version::is_gte_jdk14x_version()) { | |
3929 // These functions only exist for compatibility with 1.3.1 and earlier | |
3930 return; | |
3931 } | |
3932 | |
3933 // called from universe_post_init() | |
3934 assert( | |
3935 int_bits_to_float_fn == NULL && | |
3936 long_bits_to_double_fn == NULL && | |
3937 float_to_int_bits_fn == NULL && | |
3938 double_to_long_bits_fn == NULL , | |
3939 "initialization done twice" | |
3940 ); | |
3941 // initialize | |
3942 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3943 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3944 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3945 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3946 // verify | |
3947 assert( | |
3948 int_bits_to_float_fn != NULL && | |
3949 long_bits_to_double_fn != NULL && | |
3950 float_to_int_bits_fn != NULL && | |
3951 double_to_long_bits_fn != NULL , | |
3952 "initialization failed" | |
3953 ); | |
3954 } | |
3955 | |
3956 | |
3957 | |
3958 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3959 | |
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3960 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 3961 // Security Note: |
3962 // The Java level wrapper will perform the necessary security check allowing | |
3963 // us to pass the NULL as the initiating class loader. | |
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3964 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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3965 |
0 | 3966 KlassHandle klass_handle(THREAD, klass); |
3967 // Check if we should initialize the class | |
3968 if (init && klass_handle->oop_is_instance()) { | |
3969 klass_handle->initialize(CHECK_NULL); | |
3970 } | |
3971 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3972 } | |
3973 | |
3974 | |
14909 | 3975 // Internal SQE debugging support /////////////////////////////////////////////////////////// |
3976 | |
3977 #ifndef PRODUCT | |
3978 | |
3979 extern "C" { | |
3980 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
3981 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
3982 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
3983 } | |
3984 | |
3985 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
3986 JVMWrapper("JVM_AccessBoolVMFlag"); | |
3987 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); | |
3988 JVM_END | |
3989 | |
3990 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
3991 JVMWrapper("JVM_AccessVMIntFlag"); | |
3992 intx v; | |
3993 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); | |
3994 *value = (jint)v; | |
3995 return result; | |
3996 JVM_END | |
3997 | |
3998 | |
3999 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4000 JVMWrapper("JVM_VMBreakPoint"); | |
4001 oop the_obj = JNIHandles::resolve(obj); | |
4002 BREAKPOINT; | |
4003 JVM_END | |
4004 | |
4005 | |
4006 #endif | |
4007 | |
4008 | |
0 | 4009 // Method /////////////////////////////////////////////////////////////////////////////////////////// |
4010 | |
4011 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4012 JVMWrapper("JVM_InvokeMethod"); | |
4013 Handle method_handle; | |
4014 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4015 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4016 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4017 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4018 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4019 jobject res = JNIHandles::make_local(env, result); | |
4020 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4021 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4022 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4023 if (java_lang_Class::is_primitive(ret_type)) { | |
4024 // Only for primitive type vm allocates memory for java object. | |
4025 // See box() method. | |
4026 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4027 } | |
4028 } | |
4029 return res; | |
4030 } else { | |
4031 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4032 } | |
4033 JVM_END | |
4034 | |
4035 | |
4036 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4037 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4038 oop constructor_mirror = JNIHandles::resolve(c); | |
4039 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4040 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4041 jobject res = JNIHandles::make_local(env, result); | |
4042 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4043 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4044 } | |
4045 return res; | |
4046 JVM_END | |
4047 | |
4048 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4049 | |
4050 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4051 JVMWrapper("JVM_SupportsCX8"); | |
4052 return VM_Version::supports_cx8(); | |
4053 JVM_END | |
4054 | |
4055 | |
4056 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4057 JVMWrapper("JVM_CX8Field"); | |
4058 jlong res; | |
4059 oop o = JNIHandles::resolve(obj); | |
4060 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4061 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4062 | |
4063 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4064 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4065 | |
4066 return res == oldVal; | |
4067 JVM_END | |
4068 | |
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4069 // DTrace /////////////////////////////////////////////////////////////////// |
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4070 |
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4071 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4072 JVMWrapper("JVM_DTraceGetVersion"); |
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4073 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4074 JVM_END |
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4075 |
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4076 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4077 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4078 JVM_DTraceProvider* providers)) |
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4079 JVMWrapper("JVM_DTraceActivate"); |
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4080 return DTraceJSDT::activate( |
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4081 version, module_name, providers_count, providers, CHECK_0); |
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4082 JVM_END |
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4083 |
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4084 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4085 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4086 return DTraceJSDT::is_probe_enabled(method); |
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4087 JVM_END |
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|
4088 |
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4089 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4090 JVMWrapper("JVM_DTraceDispose"); |
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4091 DTraceJSDT::dispose(handle); |
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4092 JVM_END |
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4093 |
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4094 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4095 JVMWrapper("JVM_DTraceIsSupported"); |
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4096 return DTraceJSDT::is_supported(); |
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4097 JVM_END |
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4098 |
0 | 4099 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4100 // jvmti agent threads, and JNI attaching threads are skipped) | |
4101 // See CR 6404306 regarding JNI attaching threads | |
4102 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4103 ResourceMark rm(THREAD); | |
4104 ThreadsListEnumerator tle(THREAD, false, false); | |
4105 JvmtiVMObjectAllocEventCollector oam; | |
4106 | |
4107 int num_threads = tle.num_threads(); | |
1142 | 4108 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4109 objArrayHandle threads_ah(THREAD, r); |
4110 | |
4111 for (int i = 0; i < num_threads; i++) { | |
4112 Handle h = tle.get_threadObj(i); | |
4113 threads_ah->obj_at_put(i, h()); | |
4114 } | |
4115 | |
4116 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4117 JVM_END | |
4118 | |
4119 | |
4120 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4121 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4122 // the corresponding entry in the given threads array | |
4123 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4124 JVMWrapper("JVM_DumpThreads"); | |
4125 JvmtiVMObjectAllocEventCollector oam; | |
4126 | |
4127 // Check if threads is null | |
4128 if (threads == NULL) { | |
4129 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4130 } | |
4131 | |
4132 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4133 objArrayHandle ah(THREAD, a); | |
4134 int num_threads = ah->length(); | |
4135 // check if threads is non-empty array | |
4136 if (num_threads == 0) { | |
4137 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4138 } | |
4139 | |
4140 // check if threads is not an array of objects of Thread class | |
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4141 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4142 if (k != SystemDictionary::Thread_klass()) { |
0 | 4143 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4144 } | |
4145 | |
4146 ResourceMark rm(THREAD); | |
4147 | |
4148 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4149 for (int i = 0; i < num_threads; i++) { | |
4150 oop thread_obj = ah->obj_at(i); | |
4151 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4152 thread_handle_array->append(h); | |
4153 } | |
4154 | |
4155 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4156 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4157 | |
4158 JVM_END | |
4159 | |
4160 // JVM monitoring and management support | |
4161 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4162 return Management::get_jmm_interface(version); | |
4163 JVM_END | |
4164 | |
4165 // com.sun.tools.attach.VirtualMachine agent properties support | |
4166 // | |
4167 // Initialize the agent properties with the properties maintained in the VM | |
4168 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4169 JVMWrapper("JVM_InitAgentProperties"); | |
4170 ResourceMark rm; | |
4171 | |
4172 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4173 | |
4174 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4175 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4176 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4177 return properties; | |
4178 JVM_END | |
4179 | |
4180 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4181 { | |
4182 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4183 JvmtiVMObjectAllocEventCollector oam; | |
4184 | |
4185 if (ofClass == NULL) { | |
4186 return NULL; | |
4187 } | |
4188 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4189 // Special handling for primitive objects | |
4190 if (java_lang_Class::is_primitive(mirror())) { | |
4191 return NULL; | |
4192 } | |
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4193 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4194 if (!k->oop_is_instance()) { |
0 | 4195 return NULL; |
4196 } | |
4197 instanceKlassHandle ik_h(THREAD, k); | |
4198 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4199 if (encl_method_class_idx == 0) { | |
4200 return NULL; | |
4201 } | |
1142 | 4202 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4203 objArrayHandle dest(THREAD, dest_o); |
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4204 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4205 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4206 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4207 if (encl_method_method_idx != 0) { | |
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4208 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4209 extract_low_short_from_int( |
4210 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4211 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4212 dest->obj_at_put(1, str()); | |
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4213 sym = ik_h->constants()->symbol_at( |
0 | 4214 extract_high_short_from_int( |
4215 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4216 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4217 dest->obj_at_put(2, str()); | |
4218 } | |
4219 return (jobjectArray) JNIHandles::make_local(dest()); | |
4220 } | |
4221 JVM_END | |
4222 | |
4223 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4224 jint javaThreadState)) | |
4225 { | |
4226 // If new thread states are added in future JDK and VM versions, | |
4227 // this should check if the JDK version is compatible with thread | |
4228 // states supported by the VM. Return NULL if not compatible. | |
4229 // | |
4230 // This function must map the VM java_lang_Thread::ThreadStatus | |
4231 // to the Java thread state that the JDK supports. | |
4232 // | |
4233 | |
4234 typeArrayHandle values_h; | |
4235 switch (javaThreadState) { | |
4236 case JAVA_THREAD_STATE_NEW : { | |
4237 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4238 values_h = typeArrayHandle(THREAD, r); | |
4239 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4240 break; | |
4241 } | |
4242 case JAVA_THREAD_STATE_RUNNABLE : { | |
4243 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4244 values_h = typeArrayHandle(THREAD, r); | |
4245 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4246 break; | |
4247 } | |
4248 case JAVA_THREAD_STATE_BLOCKED : { | |
4249 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4250 values_h = typeArrayHandle(THREAD, r); | |
4251 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4252 break; | |
4253 } | |
4254 case JAVA_THREAD_STATE_WAITING : { | |
4255 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4256 values_h = typeArrayHandle(THREAD, r); | |
4257 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4258 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4259 break; | |
4260 } | |
4261 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4262 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4263 values_h = typeArrayHandle(THREAD, r); | |
4264 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4265 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4266 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4267 break; | |
4268 } | |
4269 case JAVA_THREAD_STATE_TERMINATED : { | |
4270 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4271 values_h = typeArrayHandle(THREAD, r); | |
4272 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4273 break; | |
4274 } | |
4275 default: | |
4276 // Unknown state - probably incompatible JDK version | |
4277 return NULL; | |
4278 } | |
4279 | |
4280 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4281 } | |
4282 JVM_END | |
4283 | |
4284 | |
4285 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4286 jint javaThreadState, | |
4287 jintArray values)) | |
4288 { | |
4289 // If new thread states are added in future JDK and VM versions, | |
4290 // this should check if the JDK version is compatible with thread | |
4291 // states supported by the VM. Return NULL if not compatible. | |
4292 // | |
4293 // This function must map the VM java_lang_Thread::ThreadStatus | |
4294 // to the Java thread state that the JDK supports. | |
4295 // | |
4296 | |
4297 ResourceMark rm; | |
4298 | |
4299 // Check if threads is null | |
4300 if (values == NULL) { | |
4301 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4302 } | |
4303 | |
4304 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4305 typeArrayHandle values_h(THREAD, v); | |
4306 | |
4307 objArrayHandle names_h; | |
4308 switch (javaThreadState) { | |
4309 case JAVA_THREAD_STATE_NEW : { | |
4310 assert(values_h->length() == 1 && | |
4311 values_h->int_at(0) == java_lang_Thread::NEW, | |
4312 "Invalid threadStatus value"); | |
4313 | |
1142 | 4314 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4315 1, /* only 1 substate */ |
4316 CHECK_NULL); | |
4317 names_h = objArrayHandle(THREAD, r); | |
4318 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4319 names_h->obj_at_put(0, name()); | |
4320 break; | |
4321 } | |
4322 case JAVA_THREAD_STATE_RUNNABLE : { | |
4323 assert(values_h->length() == 1 && | |
4324 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4325 "Invalid threadStatus value"); | |
4326 | |
1142 | 4327 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4328 1, /* only 1 substate */ |
4329 CHECK_NULL); | |
4330 names_h = objArrayHandle(THREAD, r); | |
4331 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4332 names_h->obj_at_put(0, name()); | |
4333 break; | |
4334 } | |
4335 case JAVA_THREAD_STATE_BLOCKED : { | |
4336 assert(values_h->length() == 1 && | |
4337 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4338 "Invalid threadStatus value"); | |
4339 | |
1142 | 4340 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4341 1, /* only 1 substate */ |
4342 CHECK_NULL); | |
4343 names_h = objArrayHandle(THREAD, r); | |
4344 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4345 names_h->obj_at_put(0, name()); | |
4346 break; | |
4347 } | |
4348 case JAVA_THREAD_STATE_WAITING : { | |
4349 assert(values_h->length() == 2 && | |
4350 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4351 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4352 "Invalid threadStatus value"); | |
1142 | 4353 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4354 2, /* number of substates */ |
4355 CHECK_NULL); | |
4356 names_h = objArrayHandle(THREAD, r); | |
4357 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4358 CHECK_NULL); | |
4359 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4360 CHECK_NULL); | |
4361 names_h->obj_at_put(0, name0()); | |
4362 names_h->obj_at_put(1, name1()); | |
4363 break; | |
4364 } | |
4365 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4366 assert(values_h->length() == 3 && | |
4367 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4368 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4369 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4370 "Invalid threadStatus value"); | |
1142 | 4371 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4372 3, /* number of substates */ |
4373 CHECK_NULL); | |
4374 names_h = objArrayHandle(THREAD, r); | |
4375 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4376 CHECK_NULL); | |
4377 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4378 CHECK_NULL); | |
4379 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4380 CHECK_NULL); | |
4381 names_h->obj_at_put(0, name0()); | |
4382 names_h->obj_at_put(1, name1()); | |
4383 names_h->obj_at_put(2, name2()); | |
4384 break; | |
4385 } | |
4386 case JAVA_THREAD_STATE_TERMINATED : { | |
4387 assert(values_h->length() == 1 && | |
4388 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4389 "Invalid threadStatus value"); | |
1142 | 4390 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4391 1, /* only 1 substate */ |
4392 CHECK_NULL); | |
4393 names_h = objArrayHandle(THREAD, r); | |
4394 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4395 names_h->obj_at_put(0, name()); | |
4396 break; | |
4397 } | |
4398 default: | |
4399 // Unknown state - probably incompatible JDK version | |
4400 return NULL; | |
4401 } | |
4402 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4403 } | |
4404 JVM_END | |
4405 | |
4406 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4407 { | |
4408 memset(info, 0, sizeof(info_size)); | |
4409 | |
4410 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4411 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4412 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4413 | |
4414 // when we add a new capability in the jvm_version_info struct, we should also | |
4415 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4416 // counter defined in runtimeService.cpp. | |
4417 info->is_attachable = AttachListener::is_attach_supported(); | |
4418 } | |
4419 JVM_END |