Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 17770:5af31f70a866
8036701: Add trace event when a metaspace throws out of memory error
Reviewed-by: stefank, mgerdin
author | ehelin |
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date | Fri, 21 Mar 2014 10:28:07 +0100 |
parents | d35df3079834 |
children | bbfbe9b06038 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
80 # include "jvm_bsd.h" | |
81 #endif | |
1972 | 82 |
0 | 83 #include <errno.h> |
84 | |
4006 | 85 #ifndef USDT2 |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 89 #endif /* !USDT2 */ |
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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"; | |
377 #else | |
378 const char* compiler_name = ""; | |
379 #endif // compilers | |
380 #endif // TIERED | |
381 | |
382 if (*compiler_name != '\0' && | |
383 (Arguments::mode() != Arguments::_int)) { | |
384 PUTPROP(props, "sun.management.compiler", compiler_name); | |
385 } | |
386 } | |
387 | |
388 return properties; | |
389 JVM_END | |
390 | |
391 | |
392 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
393 | |
394 extern volatile jint vm_created; | |
395 | |
396 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
397 if (vm_created != 0 && (code == 0)) { | |
398 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
399 Universe::run_finalizers_on_exit(); | |
400 } | |
401 before_exit(thread); | |
402 vm_exit(code); | |
403 JVM_END | |
404 | |
405 | |
406 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
407 before_exit(thread); | |
408 vm_exit(code); | |
409 JVM_END | |
410 | |
411 | |
412 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
413 register_on_exit_function(func); | |
414 JVM_END | |
415 | |
416 | |
417 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
418 JVMWrapper("JVM_GC"); | |
419 if (!DisableExplicitGC) { | |
420 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
421 } | |
422 JVM_END | |
423 | |
424 | |
425 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
426 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
427 return Universe::heap()->millis_since_last_gc(); | |
428 JVM_END | |
429 | |
430 | |
431 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
432 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
433 JVM_END | |
434 | |
435 | |
436 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
437 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
438 JVM_END | |
439 | |
440 static inline jlong convert_size_t_to_jlong(size_t val) { | |
441 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
442 NOT_LP64 (return (jlong)val;) | |
443 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
444 } | |
445 | |
446 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
447 JVMWrapper("JVM_TotalMemory"); | |
448 size_t n = Universe::heap()->capacity(); | |
449 return convert_size_t_to_jlong(n); | |
450 JVM_END | |
451 | |
452 | |
453 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
454 JVMWrapper("JVM_FreeMemory"); | |
455 CollectedHeap* ch = Universe::heap(); | |
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456 size_t n; |
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457 { |
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458 MutexLocker x(Heap_lock); |
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459 n = ch->capacity() - ch->used(); |
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460 } |
0 | 461 return convert_size_t_to_jlong(n); |
462 JVM_END | |
463 | |
464 | |
465 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
466 JVMWrapper("JVM_MaxMemory"); | |
467 size_t n = Universe::heap()->max_capacity(); | |
468 return convert_size_t_to_jlong(n); | |
469 JVM_END | |
470 | |
471 | |
472 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
473 JVMWrapper("JVM_ActiveProcessorCount"); | |
474 return os::active_processor_count(); | |
475 JVM_END | |
476 | |
477 | |
478 | |
479 // java.lang.Throwable ////////////////////////////////////////////////////// | |
480 | |
481 | |
482 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
483 JVMWrapper("JVM_FillInStackTrace"); | |
484 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
485 java_lang_Throwable::fill_in_stack_trace(exception); | |
486 JVM_END | |
487 | |
488 | |
489 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
490 JVMWrapper("JVM_GetStackTraceDepth"); | |
491 oop exception = JNIHandles::resolve(throwable); | |
492 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
493 JVM_END | |
494 | |
495 | |
496 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
497 JVMWrapper("JVM_GetStackTraceElement"); | |
498 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
499 oop exception = JNIHandles::resolve(throwable); | |
500 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
501 return JNIHandles::make_local(env, element); | |
502 JVM_END | |
503 | |
504 | |
505 // java.lang.Object /////////////////////////////////////////////// | |
506 | |
507 | |
508 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
509 JVMWrapper("JVM_IHashCode"); | |
510 // as implemented in the classic virtual machine; return 0 if object is NULL | |
511 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
512 JVM_END | |
513 | |
514 | |
515 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
516 JVMWrapper("JVM_MonitorWait"); | |
517 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
518 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
519 if (JvmtiExport::should_post_monitor_wait()) { | |
520 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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521 |
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522 // The current thread already owns the monitor and it has not yet |
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523 // been added to the wait queue so the current thread cannot be |
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524 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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525 // event handler cannot accidentally consume an unpark() meant for |
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526 // the ParkEvent associated with this ObjectMonitor. |
0 | 527 } |
528 ObjectSynchronizer::wait(obj, ms, CHECK); | |
529 JVM_END | |
530 | |
531 | |
532 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
533 JVMWrapper("JVM_MonitorNotify"); | |
534 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
535 ObjectSynchronizer::notify(obj, CHECK); | |
536 JVM_END | |
537 | |
538 | |
539 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
540 JVMWrapper("JVM_MonitorNotifyAll"); | |
541 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
542 ObjectSynchronizer::notifyall(obj, CHECK); | |
543 JVM_END | |
544 | |
545 | |
546 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
547 JVMWrapper("JVM_Clone"); | |
548 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
549 const KlassHandle klass (THREAD, obj->klass()); | |
550 JvmtiVMObjectAllocEventCollector oam; | |
551 | |
552 #ifdef ASSERT | |
553 // Just checking that the cloneable flag is set correct | |
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554 if (obj->is_array()) { |
0 | 555 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
556 } else { | |
557 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 558 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 559 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
560 } | |
561 #endif | |
562 | |
563 // Check if class of obj supports the Cloneable interface. | |
564 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
565 if (!klass->is_cloneable()) { | |
566 ResourceMark rm(THREAD); | |
567 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
568 } | |
569 | |
570 // Make shallow object copy | |
571 const int size = obj->size(); | |
572 oop new_obj = NULL; | |
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573 if (obj->is_array()) { |
0 | 574 const int length = ((arrayOop)obj())->length(); |
575 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
576 } else { | |
577 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
578 } | |
579 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
580 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
581 // be suspended in the middle of copying the pointer and end up with parts | |
582 // of two different pointers in the field. Subsequent dereferences will crash. | |
583 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
584 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
585 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
586 // The same is true of StubRoutines::object_copy and the various oop_copy | |
587 // variants, and of the code generated by the inline_native_clone intrinsic. | |
588 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
589 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
590 (size_t)align_object_size(size) / HeapWordsPerLong); | |
591 // Clear the header | |
592 new_obj->init_mark(); | |
593 | |
594 // Store check (mark entire object and let gc sort it out) | |
595 BarrierSet* bs = Universe::heap()->barrier_set(); | |
596 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
597 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
598 | |
599 // Caution: this involves a java upcall, so the clone should be | |
600 // "gc-robust" by this stage. | |
601 if (klass->has_finalizer()) { | |
602 assert(obj->is_instance(), "should be instanceOop"); | |
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603 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 604 } |
605 | |
606 return JNIHandles::make_local(env, oop(new_obj)); | |
607 JVM_END | |
608 | |
609 // java.lang.Compiler //////////////////////////////////////////////////// | |
610 | |
611 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
612 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
613 // functions are all silently ignored unless JVM warnings are printed. | |
614 | |
615 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
616 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
617 JVM_END | |
618 | |
619 | |
620 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
621 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
622 return JNI_FALSE; | |
623 JVM_END | |
624 | |
625 | |
626 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
627 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
628 return JNI_FALSE; | |
629 JVM_END | |
630 | |
631 | |
632 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
633 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
634 return JNI_FALSE; | |
635 JVM_END | |
636 | |
637 | |
638 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
639 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
640 return NULL; | |
641 JVM_END | |
642 | |
643 | |
644 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
645 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
646 JVM_END | |
647 | |
648 | |
649 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
650 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
651 JVM_END | |
652 | |
653 | |
654 | |
655 // Error message support ////////////////////////////////////////////////////// | |
656 | |
657 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
658 JVMWrapper("JVM_GetLastErrorString"); | |
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659 return (jint)os::lasterror(buf, len); |
0 | 660 JVM_END |
661 | |
662 | |
663 // java.io.File /////////////////////////////////////////////////////////////// | |
664 | |
665 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
666 JVMWrapper2("JVM_NativePath (%s)", path); | |
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667 return os::native_path(path); |
0 | 668 JVM_END |
669 | |
670 | |
671 // Misc. class handling /////////////////////////////////////////////////////////// | |
672 | |
673 | |
674 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
675 JVMWrapper("JVM_GetCallerClass"); | |
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676 |
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677 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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678 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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679 // temporarily for existing code to use until a replacement API is defined. |
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680 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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681 Klass* k = thread->security_get_caller_class(depth); |
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682 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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683 } |
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684 |
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685 // Getting the class of the caller frame. |
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686 // |
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687 // The call stack at this point looks something like this: |
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688 // |
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689 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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690 // [1] [ @CallerSensitive API.method ] |
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691 // [.] [ (skipped intermediate frames) ] |
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692 // [n] [ caller ] |
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693 vframeStream vfst(thread); |
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694 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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695 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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696 Method* m = vfst.method(); |
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697 assert(m != NULL, "sanity"); |
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698 switch (n) { |
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699 case 0: |
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700 // This must only be called from Reflection.getCallerClass |
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701 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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702 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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703 } |
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704 // fall-through |
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705 case 1: |
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706 // Frame 0 and 1 must be caller sensitive. |
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707 if (!m->caller_sensitive()) { |
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708 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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709 } |
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710 break; |
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711 default: |
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712 if (!m->is_ignored_by_security_stack_walk()) { |
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713 // We have reached the desired frame; return the holder class. |
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714 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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715 } |
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716 break; |
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717 } |
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718 } |
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719 return NULL; |
0 | 720 JVM_END |
721 | |
722 | |
723 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
724 JVMWrapper("JVM_FindPrimitiveClass"); | |
725 oop mirror = NULL; | |
726 BasicType t = name2type(utf); | |
727 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
728 mirror = Universe::java_mirror(t); | |
729 } | |
730 if (mirror == NULL) { | |
731 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
732 } else { | |
733 return (jclass) JNIHandles::make_local(env, mirror); | |
734 } | |
735 JVM_END | |
736 | |
737 | |
738 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
739 JVMWrapper("JVM_ResolveClass"); | |
740 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
741 JVM_END | |
742 | |
878
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743 |
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744 // Returns a class loaded by the bootstrap class loader; or null |
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745 // if not found. ClassNotFoundException is not thrown. |
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746 // |
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747 // Rationale behind JVM_FindClassFromBootLoader |
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748 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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749 // b> because of (a) java.dll has a direct dependecy on the unexported |
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750 // private symbol "_JVM_FindClassFromClassLoader@20". |
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751 // c> the launcher cannot use the private symbol as it dynamically opens |
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752 // the entry point, so if something changes, the launcher will fail |
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753 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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754 // stable exported interface. |
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755 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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756 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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757 // JVM_FindClassFromClassLoader and will not be backward compatible |
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758 // with older JDKs. |
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759 // Thus a public/stable exported entry point is the right solution, |
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760 // public here means public in linker semantics, and is exported only |
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761 // to the JDK, and is not intended to be a public API. |
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762 |
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763 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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764 const char* name)) |
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765 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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766 |
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767 // Java libraries should ensure that name is never null... |
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768 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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769 // It's impossible to create this class; the name cannot fit |
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770 // into the constant pool. |
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771 return NULL; |
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772 } |
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773 |
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774 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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775 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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776 if (k == NULL) { |
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777 return NULL; |
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778 } |
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779 |
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780 if (TraceClassResolution) { |
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781 trace_class_resolution(k); |
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782 } |
6983 | 783 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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784 JVM_END |
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785 |
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786 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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787 jboolean init, jobject loader, |
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788 jboolean throwError)) |
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789 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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790 throwError ? "error" : "exception"); |
388 | 791 // Java libraries should ensure that name is never null... |
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792 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 793 // It's impossible to create this class; the name cannot fit |
794 // into the constant pool. | |
795 if (throwError) { | |
796 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
797 } else { | |
798 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
799 } | |
800 } | |
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801 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 802 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
803 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
804 Handle(), throwError, THREAD); | |
805 | |
806 if (TraceClassResolution && result != NULL) { | |
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807 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 808 } |
809 return result; | |
0 | 810 JVM_END |
811 | |
812 | |
813 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
814 jboolean init, jclass from)) | |
815 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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816 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 817 // It's impossible to create this class; the name cannot fit |
818 // into the constant pool. | |
819 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
820 } | |
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821 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 822 oop from_class_oop = JNIHandles::resolve(from); |
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823 Klass* from_class = (from_class_oop == NULL) |
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824 ? (Klass*)NULL |
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825 : java_lang_Class::as_Klass(from_class_oop); |
0 | 826 oop class_loader = NULL; |
827 oop protection_domain = NULL; | |
828 if (from_class != NULL) { | |
6983 | 829 class_loader = from_class->class_loader(); |
830 protection_domain = from_class->protection_domain(); | |
0 | 831 } |
832 Handle h_loader(THREAD, class_loader); | |
833 Handle h_prot (THREAD, protection_domain); | |
834 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
835 h_prot, true, thread); | |
836 | |
837 if (TraceClassResolution && result != NULL) { | |
838 // this function is generally only used for class loading during verification. | |
839 ResourceMark rm; | |
840 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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841 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 842 const char * from_name = from_class->external_name(); |
0 | 843 |
844 oop mirror = JNIHandles::resolve_non_null(result); | |
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845 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 846 const char * to = to_class->external_name(); |
0 | 847 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
848 } | |
849 | |
850 return result; | |
851 JVM_END | |
852 | |
853 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
854 if (loader.is_null()) { | |
855 return; | |
856 } | |
857 | |
858 // check whether the current caller thread holds the lock or not. | |
859 // If not, increment the corresponding counter | |
860 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
861 ObjectSynchronizer::owner_self) { | |
862 counter->inc(); | |
863 } | |
864 } | |
865 | |
866 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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867 // and JVM_DefineClassWithSourceCond() |
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868 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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869 jobject loader, const jbyte *buf, |
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870 jsize len, jobject pd, const char *source, |
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871 jboolean verify, TRAPS) { |
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872 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 873 |
875
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874 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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875 JavaThread* jt = (JavaThread*) THREAD; |
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876 |
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877 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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878 ClassLoader::perf_define_appclass_selftime(), |
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879 ClassLoader::perf_define_appclasses(), |
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880 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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881 jt->get_thread_stat()->perf_timers_addr(), |
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882 PerfClassTraceTime::DEFINE_CLASS); |
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883 |
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884 if (UsePerfData) { |
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885 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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886 } |
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887 |
0 | 888 // Since exceptions can be thrown, class initialization can take place |
889 // if name is NULL no check for class name in .class stream has to be made. | |
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890 TempNewSymbol class_name = NULL; |
0 | 891 if (name != NULL) { |
892 const int str_len = (int)strlen(name); | |
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893 if (str_len > Symbol::max_length()) { |
0 | 894 // It's impossible to create this class; the name cannot fit |
895 // into the constant pool. | |
896 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
897 } | |
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898 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 899 } |
900 | |
901 ResourceMark rm(THREAD); | |
902 ClassFileStream st((u1*) buf, len, (char *)source); | |
903 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
904 if (UsePerfData) { | |
905 is_lock_held_by_thread(class_loader, | |
906 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
907 THREAD); | |
908 } | |
909 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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910 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 911 protection_domain, &st, |
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912 verify != 0, |
0 | 913 CHECK_NULL); |
914 | |
915 if (TraceClassResolution && k != NULL) { | |
916 trace_class_resolution(k); | |
917 } | |
918 | |
6983 | 919 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 920 } |
921 | |
922 | |
923 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
924 JVMWrapper2("JVM_DefineClass %s", name); | |
925 | |
973
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926 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 927 JVM_END |
928 | |
929 | |
930 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
931 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
932 | |
973
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933 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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934 JVM_END |
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935 |
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936 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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937 jobject loader, const jbyte *buf, |
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938 jsize len, jobject pd, |
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939 const char *source, jboolean verify)) |
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940 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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941 |
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942 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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943 JVM_END |
0 | 944 |
945 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
946 JVMWrapper("JVM_FindLoadedClass"); | |
947 ResourceMark rm(THREAD); | |
948 | |
949 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
950 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
951 | |
952 const char* str = java_lang_String::as_utf8_string(string()); | |
953 // Sanity check, don't expect null | |
954 if (str == NULL) return NULL; | |
955 | |
956 const int str_len = (int)strlen(str); | |
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957 if (str_len > Symbol::max_length()) { |
0 | 958 // It's impossible to create this class; the name cannot fit |
959 // into the constant pool. | |
960 return NULL; | |
961 } | |
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962 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 963 |
964 // Security Note: | |
965 // The Java level wrapper will perform the necessary security check allowing | |
966 // us to pass the NULL as the initiating class loader. | |
967 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
968 if (UsePerfData) { | |
969 is_lock_held_by_thread(h_loader, | |
970 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
971 THREAD); | |
972 } | |
973 | |
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974 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 975 h_loader, |
976 Handle(), | |
977 CHECK_NULL); | |
978 | |
979 return (k == NULL) ? NULL : | |
6983 | 980 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 981 JVM_END |
982 | |
983 | |
984 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
985 | |
986 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
987 assert (cls != NULL, "illegal class"); | |
988 JVMWrapper("JVM_GetClassName"); | |
989 JvmtiVMObjectAllocEventCollector oam; | |
990 ResourceMark rm(THREAD); | |
991 const char* name; | |
992 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
993 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
994 } else { | |
995 // Consider caching interned string in Klass | |
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996 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 997 assert(k->is_klass(), "just checking"); |
6983 | 998 name = k->external_name(); |
0 | 999 } |
1000 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1001 return (jstring) JNIHandles::make_local(env, result); | |
1002 JVM_END | |
1003 | |
1004 | |
1005 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1006 JVMWrapper("JVM_GetClassInterfaces"); | |
1007 JvmtiVMObjectAllocEventCollector oam; | |
1008 oop mirror = JNIHandles::resolve_non_null(cls); | |
1009 | |
1010 // Special handling for primitive objects | |
1011 if (java_lang_Class::is_primitive(mirror)) { | |
1012 // Primitive objects does not have any interfaces | |
1142 | 1013 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1014 return (jobjectArray) JNIHandles::make_local(env, r); |
1015 } | |
1016 | |
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1017 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1018 // Figure size of result array |
1019 int size; | |
1020 if (klass->oop_is_instance()) { | |
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1021 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1022 } else { |
1023 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1024 size = 2; | |
1025 } | |
1026 | |
1027 // Allocate result array | |
1142 | 1028 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1029 objArrayHandle result (THREAD, r); |
1030 // Fill in result | |
1031 if (klass->oop_is_instance()) { | |
1032 // Regular instance klass, fill in all local interfaces | |
1033 for (int index = 0; index < size; index++) { | |
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1034 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1035 result->obj_at_put(index, k->java_mirror()); |
0 | 1036 } |
1037 } else { | |
1038 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1039 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1040 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1041 } |
1042 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1043 JVM_END | |
1044 | |
1045 | |
1046 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1047 JVMWrapper("JVM_GetClassLoader"); | |
1048 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1049 return NULL; | |
1050 } | |
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1051 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1052 oop loader = k->class_loader(); |
0 | 1053 return JNIHandles::make_local(env, loader); |
1054 JVM_END | |
1055 | |
1056 | |
1057 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1058 JVMWrapper("JVM_IsInterface"); | |
1059 oop mirror = JNIHandles::resolve_non_null(cls); | |
1060 if (java_lang_Class::is_primitive(mirror)) { | |
1061 return JNI_FALSE; | |
1062 } | |
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1063 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1064 jboolean result = k->is_interface(); |
1065 assert(!result || k->oop_is_instance(), | |
0 | 1066 "all interfaces are instance types"); |
1067 // The compiler intrinsic for isInterface tests the | |
1068 // Klass::_access_flags bits in the same way. | |
1069 return result; | |
1070 JVM_END | |
1071 | |
1072 | |
1073 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1074 JVMWrapper("JVM_GetClassSigners"); | |
1075 JvmtiVMObjectAllocEventCollector oam; | |
1076 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1077 // There are no signers for primitive types | |
1078 return NULL; | |
1079 } | |
1080 | |
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1081 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1082 |
1083 // If there are no signers set in the class, or if the class | |
1084 // is an array, return NULL. | |
1085 if (signers == NULL) return NULL; | |
1086 | |
1087 // copy of the signers array | |
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1088 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1089 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1090 for (int index = 0; index < signers->length(); index++) { | |
1091 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1092 } | |
1093 | |
1094 // return the copy | |
1095 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1096 JVM_END | |
1097 | |
1098 | |
1099 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1100 JVMWrapper("JVM_SetClassSigners"); | |
1101 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1102 // This call is ignored for primitive types and arrays. | |
1103 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1104 // be called with an array. Only the bootstrap loader creates arrays. | |
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1105 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1106 if (k->oop_is_instance()) { |
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1107 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1108 } |
1109 } | |
1110 JVM_END | |
1111 | |
1112 | |
1113 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1114 JVMWrapper("JVM_GetProtectionDomain"); | |
1115 if (JNIHandles::resolve(cls) == NULL) { | |
1116 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1117 } | |
1118 | |
1119 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1120 // Primitive types does not have a protection domain. | |
1121 return NULL; | |
1122 } | |
1123 | |
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1124 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1125 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1126 JVM_END |
1127 | |
1128 | |
11010 | 1129 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1130 // If there is a security manager and protection domain, check the access | |
1131 // in the protection domain, otherwise it is authorized. | |
1132 if (java_lang_System::has_security_manager()) { | |
1133 | |
1134 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1135 // this context to revert to older behavior. | |
1136 // In this case the isAuthorized field in AccessControlContext is also not | |
1137 // present. | |
1138 if (Universe::protection_domain_implies_method() == NULL) { | |
1139 return true; | |
1140 } | |
1141 | |
1142 // Whitelist certain access control contexts | |
1143 if (java_security_AccessControlContext::is_authorized(context)) { | |
1144 return true; | |
1145 } | |
1146 | |
1147 oop prot = klass->protection_domain(); | |
1148 if (prot != NULL) { | |
1149 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1150 // in the new wrapper. | |
1151 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1152 Handle h_prot(THREAD, prot); | |
1153 JavaValue result(T_BOOLEAN); | |
1154 JavaCallArguments args(h_prot); | |
1155 JavaCalls::call(&result, m, &args, CHECK_false); | |
1156 return (result.get_jboolean() != 0); | |
1157 } | |
1158 } | |
1159 return true; | |
1160 } | |
1161 | |
1162 // Create an AccessControlContext with a protection domain with null codesource | |
1163 // and null permissions - which gives no permissions. | |
1164 oop create_dummy_access_control_context(TRAPS) { | |
1165 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1166 // new ProtectionDomain(null,null); | |
1167 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1168 Handle null_pd(THREAD, null_protection_domain); | |
1169 | |
1170 // new ProtectionDomain[] {pd}; | |
1171 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1172 context->obj_at_put(0, null_pd()); | |
1173 | |
1174 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1175 objArrayHandle h_context(THREAD, context); | |
1176 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1177 return result; | |
1178 } | |
0 | 1179 |
1180 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1181 JVMWrapper("JVM_DoPrivileged"); | |
1182 | |
1183 if (action == NULL) { | |
1184 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1185 } | |
1186 | |
11010 | 1187 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1188 vframeStream vfst(thread); | |
1189 vfst.security_get_caller_frame(1); | |
1190 | |
1191 if (vfst.at_end()) { | |
1192 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1193 } | |
1194 | |
1195 Method* method = vfst.method(); | |
1196 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1197 | |
1198 // Check that action object understands "Object run()" | |
1199 Handle h_context; | |
1200 if (context != NULL) { | |
1201 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1202 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1203 if (!authorized) { | |
1204 // Create an unprivileged access control object and call it's run function | |
1205 // instead. | |
1206 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1207 h_context = Handle(THREAD, noprivs); | |
1208 } | |
1209 } | |
0 | 1210 |
1211 // Check that action object understands "Object run()" | |
1212 Handle object (THREAD, JNIHandles::resolve(action)); | |
1213 | |
1214 // get run() method | |
6983 | 1215 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1216 vmSymbols::run_method_name(), |
1217 vmSymbols::void_object_signature()); | |
1218 methodHandle m (THREAD, m_oop); | |
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1219 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1220 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1221 } | |
1222 | |
11010 | 1223 // Stack allocated list of privileged stack elements |
1224 PrivilegedElement pi; | |
0 | 1225 if (!vfst.at_end()) { |
11010 | 1226 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1227 thread->set_privileged_stack_top(&pi); |
1228 } | |
1229 | |
1230 | |
1231 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1232 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1233 Handle pending_exception; | |
1234 JavaValue result(T_OBJECT); | |
1235 JavaCallArguments args(object); | |
1236 JavaCalls::call(&result, m, &args, THREAD); | |
1237 | |
1238 // done with action, remove ourselves from the list | |
1239 if (!vfst.at_end()) { | |
1240 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1241 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1242 } | |
1243 | |
1244 if (HAS_PENDING_EXCEPTION) { | |
1245 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1246 CLEAR_PENDING_EXCEPTION; | |
1247 | |
1142 | 1248 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1249 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1250 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1251 JavaCallArguments args(pending_exception); | |
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1252 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1253 vmSymbols::exception_void_signature(), |
0 | 1254 &args); |
1255 } | |
1256 } | |
1257 | |
1258 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1259 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1260 JVM_END | |
1261 | |
1262 | |
1263 // Returns the inherited_access_control_context field of the running thread. | |
1264 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1265 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1266 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1267 return JNIHandles::make_local(env, result); | |
1268 JVM_END | |
1269 | |
1270 class RegisterArrayForGC { | |
1271 private: | |
1272 JavaThread *_thread; | |
1273 public: | |
1274 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1275 _thread = thread; | |
1276 _thread->register_array_for_gc(array); | |
1277 } | |
1278 | |
1279 ~RegisterArrayForGC() { | |
1280 _thread->register_array_for_gc(NULL); | |
1281 } | |
1282 }; | |
1283 | |
1284 | |
1285 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1286 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1287 if (!UsePrivilegedStack) return NULL; | |
1288 | |
1289 ResourceMark rm(THREAD); | |
1290 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1291 JvmtiVMObjectAllocEventCollector oam; | |
1292 | |
1293 // count the protection domains on the execution stack. We collapse | |
1294 // duplicate consecutive protection domains into a single one, as | |
1295 // well as stopping when we hit a privileged frame. | |
1296 | |
1297 // Use vframeStream to iterate through Java frames | |
1298 vframeStream vfst(thread); | |
1299 | |
1300 oop previous_protection_domain = NULL; | |
1301 Handle privileged_context(thread, NULL); | |
1302 bool is_privileged = false; | |
1303 oop protection_domain = NULL; | |
1304 | |
1305 for(; !vfst.at_end(); vfst.next()) { | |
1306 // get method of frame | |
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1307 Method* method = vfst.method(); |
0 | 1308 intptr_t* frame_id = vfst.frame_id(); |
1309 | |
1310 // check the privileged frames to see if we have a match | |
1311 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1312 // this frame is privileged | |
1313 is_privileged = true; | |
1314 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1315 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1316 } else { | |
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1317 protection_domain = method->method_holder()->protection_domain(); |
0 | 1318 } |
1319 | |
1320 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1321 local_array->push(protection_domain); | |
1322 previous_protection_domain = protection_domain; | |
1323 } | |
1324 | |
1325 if (is_privileged) break; | |
1326 } | |
1327 | |
1328 | |
1329 // either all the domains on the stack were system domains, or | |
1330 // we had a privileged system domain | |
1331 if (local_array->is_empty()) { | |
1332 if (is_privileged && privileged_context.is_null()) return NULL; | |
1333 | |
1334 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1335 return JNIHandles::make_local(env, result); | |
1336 } | |
1337 | |
1338 // the resource area must be registered in case of a gc | |
1339 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1340 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1341 local_array->length(), CHECK_NULL); |
1342 objArrayHandle h_context(thread, context); | |
1343 for (int index = 0; index < local_array->length(); index++) { | |
1344 h_context->obj_at_put(index, local_array->at(index)); | |
1345 } | |
1346 | |
1347 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1348 | |
1349 return JNIHandles::make_local(env, result); | |
1350 JVM_END | |
1351 | |
1352 | |
1353 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1354 JVMWrapper("JVM_IsArrayClass"); | |
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1355 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1356 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1357 JVM_END |
1358 | |
1359 | |
1360 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1361 JVMWrapper("JVM_IsPrimitiveClass"); | |
1362 oop mirror = JNIHandles::resolve_non_null(cls); | |
1363 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1364 JVM_END | |
1365 | |
1366 | |
1367 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1368 JVMWrapper("JVM_GetComponentType"); | |
1369 oop mirror = JNIHandles::resolve_non_null(cls); | |
1370 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1371 return (jclass) JNIHandles::make_local(env, result); | |
1372 JVM_END | |
1373 | |
1374 | |
1375 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1376 JVMWrapper("JVM_GetClassModifiers"); | |
1377 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1378 // Primitive type | |
1379 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1380 } | |
1381 | |
6983 | 1382 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1383 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1384 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1385 return k->modifier_flags(); | |
1386 JVM_END | |
1387 | |
1388 | |
1389 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1390 | |
1391 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1392 JvmtiVMObjectAllocEventCollector oam; | |
1393 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1394 // of an InstanceKlass |
0 | 1395 |
1396 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1397 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1398 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1399 return (jobjectArray)JNIHandles::make_local(env, result); |
1400 } | |
1401 | |
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1402 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1403 InnerClassesIterator iter(k); |
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1404 |
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1405 if (iter.length() == 0) { |
0 | 1406 // Neither an inner nor outer class |
1142 | 1407 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1408 return (jobjectArray)JNIHandles::make_local(env, result); |
1409 } | |
1410 | |
1411 // find inner class info | |
1412 constantPoolHandle cp(thread, k->constants()); | |
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1413 int length = iter.length(); |
0 | 1414 |
1415 // Allocate temp. result array | |
1142 | 1416 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1417 objArrayHandle result (THREAD, r); |
1418 int members = 0; | |
1419 | |
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1420 for (; !iter.done(); iter.next()) { |
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1421 int ioff = iter.inner_class_info_index(); |
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1422 int ooff = iter.outer_class_info_index(); |
0 | 1423 |
1424 if (ioff != 0 && ooff != 0) { | |
1425 // Check to see if the name matches the class we're looking for | |
1426 // before attempting to find the class. | |
1427 if (cp->klass_name_at_matches(k, ooff)) { | |
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1428 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1429 if (outer_klass == k()) { |
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1430 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1431 instanceKlassHandle inner_klass (THREAD, ik); |
1432 | |
1433 // Throws an exception if outer klass has not declared k as | |
1434 // an inner klass | |
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1435 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1436 |
1437 result->obj_at_put(members, inner_klass->java_mirror()); | |
1438 members++; | |
1439 } | |
1440 } | |
1441 } | |
1442 } | |
1443 | |
1444 if (members != length) { | |
1445 // Return array of right length | |
1142 | 1446 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1447 for(int i = 0; i < members; i++) { |
1448 res->obj_at_put(i, result->obj_at(i)); | |
1449 } | |
1450 return (jobjectArray)JNIHandles::make_local(env, res); | |
1451 } | |
1452 | |
1453 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1454 JVM_END | |
1455 | |
1456 | |
1457 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1458 { |
0 | 1459 // ofClass is a reference to a java_lang_Class object. |
1460 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1461 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1462 return NULL; |
1463 } | |
1464 | |
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1465 bool inner_is_member = false; |
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1466 Klass* outer_klass |
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1467 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1468 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1469 if (outer_klass == NULL) return NULL; // already a top-level class |
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1470 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1471 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1472 } |
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1473 JVM_END |
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1474 |
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1475 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1476 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1477 bool* inner_is_member, |
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1478 TRAPS) { |
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1479 Thread* thread = THREAD; |
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1480 InnerClassesIterator iter(k); |
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1481 if (iter.length() == 0) { |
0 | 1482 // No inner class info => no declaring class |
1483 return NULL; | |
1484 } | |
1485 | |
1486 constantPoolHandle i_cp(thread, k->constants()); | |
1487 | |
1488 bool found = false; | |
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1489 Klass* ok; |
0 | 1490 instanceKlassHandle outer_klass; |
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1491 *inner_is_member = false; |
0 | 1492 |
1493 // Find inner_klass attribute | |
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1494 for (; !iter.done() && !found; iter.next()) { |
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1495 int ioff = iter.inner_class_info_index(); |
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1496 int ooff = iter.outer_class_info_index(); |
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1497 int noff = iter.inner_name_index(); |
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1498 if (ioff != 0) { |
0 | 1499 // Check to see if the name matches the class we're looking for |
1500 // before attempting to find the class. | |
1501 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1502 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1503 found = (k() == inner_klass); |
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1504 if (found && ooff != 0) { |
0 | 1505 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1506 outer_klass = instanceKlassHandle(thread, ok); | |
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1507 *inner_is_member = true; |
0 | 1508 } |
1509 } | |
1510 } | |
1511 } | |
1512 | |
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1513 if (found && outer_klass.is_null()) { |
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1514 // It may be anonymous; try for that. |
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1515 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1516 if (encl_method_class_idx != 0) { |
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1517 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1518 outer_klass = instanceKlassHandle(thread, ok); |
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1519 *inner_is_member = false; |
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1520 } |
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1521 } |
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1522 |
0 | 1523 // If no inner class attribute found for this class. |
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1524 if (outer_klass.is_null()) return NULL; |
0 | 1525 |
1526 // Throws an exception if outer klass has not declared k as an inner klass | |
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1527 // We need evidence that each klass knows about the other, or else |
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1528 // the system could allow a spoof of an inner class to gain access rights. |
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1529 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1530 return outer_klass(); |
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1531 } |
0 | 1532 |
1533 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1534 assert (cls != NULL, "illegal class"); | |
1535 JVMWrapper("JVM_GetClassSignature"); | |
1536 JvmtiVMObjectAllocEventCollector oam; | |
1537 ResourceMark rm(THREAD); | |
1538 // Return null for arrays and primatives | |
1539 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1540 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1541 if (k->oop_is_instance()) { |
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1542 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1543 if (sym == NULL) return NULL; |
0 | 1544 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1545 return (jstring) JNIHandles::make_local(env, str()); | |
1546 } | |
1547 } | |
1548 return NULL; | |
1549 JVM_END | |
1550 | |
1551 | |
1552 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1553 assert (cls != NULL, "illegal class"); | |
1554 JVMWrapper("JVM_GetClassAnnotations"); | |
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1555 |
0 | 1556 // Return null for arrays and primitives |
1557 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1558 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1559 if (k->oop_is_instance()) { |
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1560 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1561 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1562 } |
1563 } | |
1564 return NULL; | |
1565 JVM_END | |
1566 | |
1567 | |
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1568 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1569 // some of this code was adapted from from jni_FromReflectedField |
1570 | |
1571 oop reflected = JNIHandles::resolve_non_null(field); | |
1572 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1573 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1574 int slot = java_lang_reflect_Field::slot(reflected); |
1575 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1576 | |
1577 KlassHandle kh(THREAD, k); | |
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1578 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1579 |
1580 if (modifiers & JVM_ACC_STATIC) { | |
1581 // for static fields we only look in the current class | |
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1582 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1583 assert(false, "cannot find static field"); |
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1584 return false; |
0 | 1585 } |
1586 } else { | |
1587 // for instance fields we start with the current class and work | |
1588 // our way up through the superclass chain | |
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1589 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1590 assert(false, "cannot find instance field"); |
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1591 return false; |
0 | 1592 } |
1593 } | |
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1594 return true; |
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1595 } |
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1596 |
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1597 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1598 // field is a handle to a java.lang.reflect.Field object |
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1599 assert(field != NULL, "illegal field"); |
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1600 JVMWrapper("JVM_GetFieldAnnotations"); |
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1601 |
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|
1602 fieldDescriptor fd; |
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1603 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1604 if (!gotFd) { |
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|
1605 return NULL; |
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|
1606 } |
0 | 1607 |
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1608 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1609 JVM_END |
1610 | |
1611 | |
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1612 static Method* jvm_get_method_common(jobject method) { |
0 | 1613 // some of this code was adapted from from jni_FromReflectedMethod |
1614 | |
1615 oop reflected = JNIHandles::resolve_non_null(method); | |
1616 oop mirror = NULL; | |
1617 int slot = 0; | |
1618 | |
1142 | 1619 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1620 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1621 slot = java_lang_reflect_Constructor::slot(reflected); | |
1622 } else { | |
1142 | 1623 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1624 "wrong type"); |
1625 mirror = java_lang_reflect_Method::clazz(reflected); | |
1626 slot = java_lang_reflect_Method::slot(reflected); | |
1627 } | |
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1628 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1629 |
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1630 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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1631 assert(m != NULL, "cannot find method"); |
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1632 return m; // caller has to deal with NULL in product mode |
0 | 1633 } |
1634 | |
1635 | |
1636 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1637 JVMWrapper("JVM_GetMethodAnnotations"); | |
1638 | |
1639 // method is a handle to a java.lang.reflect.Method object | |
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1640 Method* m = jvm_get_method_common(method); |
8818
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1641 if (m == NULL) { |
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1642 return NULL; |
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|
1643 } |
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1644 |
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1645 return (jbyteArray) JNIHandles::make_local(env, |
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1646 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1647 JVM_END |
1648 | |
1649 | |
1650 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1651 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1652 | |
1653 // method is a handle to a java.lang.reflect.Method object | |
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1654 Method* m = jvm_get_method_common(method); |
8818
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1655 if (m == NULL) { |
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|
1656 return NULL; |
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|
1657 } |
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1658 |
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1659 return (jbyteArray) JNIHandles::make_local(env, |
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1660 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1661 JVM_END |
1662 | |
1663 | |
1664 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1665 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1666 | |
1667 // method is a handle to a java.lang.reflect.Method object | |
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1668 Method* m = jvm_get_method_common(method); |
8818
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1669 if (m == NULL) { |
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|
1670 return NULL; |
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|
1671 } |
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1672 |
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1673 return (jbyteArray) JNIHandles::make_local(env, |
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1674 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1675 JVM_END |
1676 | |
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1677 /* Type use annotations support (JDK 1.8) */ |
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1678 |
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1679 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1680 assert (cls != NULL, "illegal class"); |
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1681 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1682 ResourceMark rm(THREAD); |
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|
1683 // Return null for arrays and primitives |
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1684 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1685 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1686 if (k->oop_is_instance()) { |
8031 | 1687 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1688 if (type_annotations != NULL) { |
8031 | 1689 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
7611
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1690 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1691 } |
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|
1692 } |
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|
1693 } |
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|
1694 return NULL; |
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|
1695 JVM_END |
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|
1696 |
8818
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1697 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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|
1698 assert (method != NULL, "illegal method"); |
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|
1699 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1700 |
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|
1701 // method is a handle to a java.lang.reflect.Method object |
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1702 Method* m = jvm_get_method_common(method); |
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1703 if (m == NULL) { |
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|
1704 return NULL; |
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|
1705 } |
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|
1706 |
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|
1707 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1708 if (type_annotations != NULL) { |
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|
1709 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1710 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1711 } |
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|
1712 |
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|
1713 return NULL; |
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|
1714 JVM_END |
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|
1715 |
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|
1716 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1717 assert (field != NULL, "illegal field"); |
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|
1718 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1719 |
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|
1720 fieldDescriptor fd; |
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|
1721 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1722 if (!gotFd) { |
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|
1723 return NULL; |
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|
1724 } |
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|
1725 |
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1726 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1727 JVM_END |
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|
1728 |
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1729 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1730 if (!cp->is_within_bounds(index)) { |
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1731 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1732 } |
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1733 } |
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1734 |
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1735 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1736 { |
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|
1737 JVMWrapper("JVM_GetMethodParameters"); |
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1738 // method is a handle to a java.lang.reflect.Method object |
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1739 Method* method_ptr = jvm_get_method_common(method); |
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1740 methodHandle mh (THREAD, method_ptr); |
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1741 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1742 const int num_params = mh->method_parameters_length(); |
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1743 |
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1744 if (0 != num_params) { |
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1745 // make sure all the symbols are properly formatted |
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1746 for (int i = 0; i < num_params; i++) { |
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1747 MethodParametersElement* params = mh->method_parameters_start(); |
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1748 int index = params[i].name_cp_index; |
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|
1749 bounds_check(mh->constants(), index, CHECK_NULL); |
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1750 |
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1751 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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|
1752 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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|
1753 "Wrong type at constant pool index"); |
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|
1754 } |
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|
1755 |
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1756 } |
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1757 |
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1758 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1759 objArrayHandle result (THREAD, result_oop); |
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1760 |
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1761 for (int i = 0; i < num_params; i++) { |
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1762 MethodParametersElement* params = mh->method_parameters_start(); |
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1763 // For a 0 index, give a NULL symbol |
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1764 Symbol* sym = 0 != params[i].name_cp_index ? |
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1765 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1766 int flags = params[i].flags; |
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1767 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1768 flags, CHECK_NULL); |
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1769 result->obj_at_put(i, param); |
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1770 } |
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1771 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1772 } else { |
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1773 return (jobjectArray)NULL; |
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1774 } |
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1775 } |
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1776 JVM_END |
0 | 1777 |
1778 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1779 | |
1780 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1781 { | |
1782 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1783 JvmtiVMObjectAllocEventCollector oam; | |
1784 | |
1785 // Exclude primitive types and array types | |
1786 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1787 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1788 // Return empty array |
1142 | 1789 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1790 return (jobjectArray) JNIHandles::make_local(env, res); |
1791 } | |
1792 | |
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1793 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1794 constantPoolHandle cp(THREAD, k->constants()); |
1795 | |
1796 // Ensure class is linked | |
1797 k->link_class(CHECK_NULL); | |
1798 | |
1799 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1800 bool skip_backtrace = false; | |
1801 | |
1802 // Allocate result | |
1803 int num_fields; | |
1804 | |
1805 if (publicOnly) { | |
1806 num_fields = 0; | |
3938 | 1807 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1808 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1809 } |
1810 } else { | |
3938 | 1811 num_fields = k->java_fields_count(); |
0 | 1812 |
1142 | 1813 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1814 num_fields--; |
1815 skip_backtrace = true; | |
1816 } | |
1817 } | |
1818 | |
1142 | 1819 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1820 objArrayHandle result (THREAD, r); |
1821 | |
1822 int out_idx = 0; | |
1823 fieldDescriptor fd; | |
3938 | 1824 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1825 if (skip_backtrace) { |
1826 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1827 int offset = fs.offset(); |
0 | 1828 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1829 } | |
1830 | |
3938 | 1831 if (!publicOnly || fs.access_flags().is_public()) { |
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1832 fd.reinitialize(k(), fs.index()); |
0 | 1833 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1834 result->obj_at_put(out_idx, field); | |
1835 ++out_idx; | |
1836 } | |
1837 } | |
1838 assert(out_idx == num_fields, "just checking"); | |
1839 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1840 } | |
1841 JVM_END | |
1842 | |
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1843 static bool select_method(methodHandle method, bool want_constructor) { |
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1844 if (want_constructor) { |
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1845 return (method->is_initializer() && !method->is_static()); |
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1846 } else { |
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1847 return (!method->is_initializer() && !method->is_overpass()); |
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1848 } |
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1849 } |
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1850 |
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1851 static jobjectArray get_class_declared_methods_helper( |
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1852 JNIEnv *env, |
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1853 jclass ofClass, jboolean publicOnly, |
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1854 bool want_constructor, |
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1855 Klass* klass, TRAPS) { |
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1856 |
0 | 1857 JvmtiVMObjectAllocEventCollector oam; |
1858 | |
1859 // Exclude primitive types and array types | |
1860 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1861 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1862 // Return empty array |
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1863 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1864 return (jobjectArray) JNIHandles::make_local(env, res); |
1865 } | |
1866 | |
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1867 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1868 |
1869 // Ensure class is linked | |
1870 k->link_class(CHECK_NULL); | |
1871 | |
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1872 Array<Method*>* methods = k->methods(); |
0 | 1873 int methods_length = methods->length(); |
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1874 |
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1875 // Save original method_idnum in case of redefinition, which can change |
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1876 // the idnum of obsolete methods. The new method will have the same idnum |
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1877 // but if we refresh the methods array, the counts will be wrong. |
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1878 ResourceMark rm(THREAD); |
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1879 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1880 int num_methods = 0; |
1881 | |
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1882 for (int i = 0; i < methods_length; i++) { |
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1883 methodHandle method(THREAD, methods->at(i)); |
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1884 if (select_method(method, want_constructor)) { |
0 | 1885 if (!publicOnly || method->is_public()) { |
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1886 idnums->push(method->method_idnum()); |
0 | 1887 ++num_methods; |
1888 } | |
1889 } | |
1890 } | |
1891 | |
1892 // Allocate result | |
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1893 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1894 objArrayHandle result (THREAD, r); |
1895 | |
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1896 // Now just put the methods that we selected above, but go by their idnum |
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1897 // in case of redefinition. The methods can be redefined at any safepoint, |
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1898 // so above when allocating the oop array and below when creating reflect |
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1899 // objects. |
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1900 for (int i = 0; i < num_methods; i++) { |
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1901 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1902 if (method.is_null()) { |
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1903 // Method may have been deleted and seems this API can handle null |
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1904 // Otherwise should probably put a method that throws NSME |
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1905 result->obj_at_put(i, NULL); |
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1906 } else { |
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1907 oop m; |
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1908 if (want_constructor) { |
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1909 m = Reflection::new_constructor(method, CHECK_NULL); |
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1910 } else { |
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1911 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1912 } |
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1913 result->obj_at_put(i, m); |
0 | 1914 } |
1915 } | |
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1916 |
0 | 1917 return (jobjectArray) JNIHandles::make_local(env, result()); |
1918 } | |
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1919 |
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1920 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1921 { |
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1922 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1923 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1924 /*want_constructor*/ false, |
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1925 SystemDictionary::reflect_Method_klass(), THREAD); |
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1926 } |
0 | 1927 JVM_END |
1928 | |
1929 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1930 { | |
1931 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1932 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1933 /*want_constructor*/ true, |
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1934 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1935 } |
1936 JVM_END | |
1937 | |
1938 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1939 { | |
1940 JVMWrapper("JVM_GetClassAccessFlags"); | |
1941 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1942 // Primitive type | |
1943 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1944 } | |
1945 | |
6983 | 1946 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1947 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1948 } | |
1949 JVM_END | |
1950 | |
1951 | |
1952 // Constant pool access ////////////////////////////////////////////////////////// | |
1953 | |
1954 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1955 { | |
1956 JVMWrapper("JVM_GetClassConstantPool"); | |
1957 JvmtiVMObjectAllocEventCollector oam; | |
1958 | |
1959 // Return null for primitives and arrays | |
1960 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1961 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1962 if (k->oop_is_instance()) { |
0 | 1963 instanceKlassHandle k_h(THREAD, k); |
1964 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1965 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1966 return JNIHandles::make_local(jcp()); |
1967 } | |
1968 } | |
1969 return NULL; | |
1970 } | |
1971 JVM_END | |
1972 | |
1973 | |
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1974 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1975 { |
1976 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1977 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1978 return cp->length(); |
1979 } | |
1980 JVM_END | |
1981 | |
1982 | |
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1983 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1984 { |
1985 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1986 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1987 bounds_check(cp, index, CHECK_NULL); |
1988 constantTag tag = cp->tag_at(index); | |
1989 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1990 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1991 } | |
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1992 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1993 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1994 } |
1995 JVM_END | |
1996 | |
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1997 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1998 { |
1999 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2000 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2001 bounds_check(cp, index, CHECK_NULL); |
2002 constantTag tag = cp->tag_at(index); | |
2003 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2004 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2005 } | |
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2006 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2007 if (k == NULL) return NULL; |
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2008 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2009 } |
2010 JVM_END | |
2011 | |
2012 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2013 constantTag tag = cp->tag_at(index); | |
2014 if (!tag.is_method() && !tag.is_interface_method()) { | |
2015 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2016 } | |
2017 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2018 Klass* k_o; |
0 | 2019 if (force_resolution) { |
2020 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2021 } else { | |
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2022 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2023 if (k_o == NULL) return NULL; |
2024 } | |
2025 instanceKlassHandle k(THREAD, k_o); | |
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2026 Symbol* name = cp->uncached_name_ref_at(index); |
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2027 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2028 methodHandle m (THREAD, k->find_method(name, sig)); |
2029 if (m.is_null()) { | |
2030 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2031 } | |
2032 oop method; | |
2033 if (!m->is_initializer() || m->is_static()) { | |
2034 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2035 } else { | |
2036 method = Reflection::new_constructor(m, CHECK_NULL); | |
2037 } | |
2038 return JNIHandles::make_local(method); | |
2039 } | |
2040 | |
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2041 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2042 { |
2043 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2044 JvmtiVMObjectAllocEventCollector oam; | |
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2045 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2046 bounds_check(cp, index, CHECK_NULL); |
2047 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2048 return res; | |
2049 } | |
2050 JVM_END | |
2051 | |
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2052 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2053 { |
2054 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2055 JvmtiVMObjectAllocEventCollector oam; | |
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2056 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2057 bounds_check(cp, index, CHECK_NULL); |
2058 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2059 return res; | |
2060 } | |
2061 JVM_END | |
2062 | |
2063 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2064 constantTag tag = cp->tag_at(index); | |
2065 if (!tag.is_field()) { | |
2066 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2067 } | |
2068 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2069 Klass* k_o; |
0 | 2070 if (force_resolution) { |
2071 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2072 } else { | |
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2073 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2074 if (k_o == NULL) return NULL; |
2075 } | |
2076 instanceKlassHandle k(THREAD, k_o); | |
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2077 Symbol* name = cp->uncached_name_ref_at(index); |
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2078 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2079 fieldDescriptor fd; |
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2080 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2081 if (target_klass == NULL) { |
2082 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2083 } | |
2084 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2085 return JNIHandles::make_local(field); | |
2086 } | |
2087 | |
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2088 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2089 { |
2090 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2091 JvmtiVMObjectAllocEventCollector oam; | |
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2092 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2093 bounds_check(cp, index, CHECK_NULL); |
2094 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2095 return res; | |
2096 } | |
2097 JVM_END | |
2098 | |
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2099 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2100 { |
2101 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2102 JvmtiVMObjectAllocEventCollector oam; | |
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2103 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2104 bounds_check(cp, index, CHECK_NULL); |
2105 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2106 return res; | |
2107 } | |
2108 JVM_END | |
2109 | |
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2110 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2111 { |
2112 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2113 JvmtiVMObjectAllocEventCollector oam; | |
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2114 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2115 bounds_check(cp, index, CHECK_NULL); |
2116 constantTag tag = cp->tag_at(index); | |
2117 if (!tag.is_field_or_method()) { | |
2118 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2119 } | |
2120 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2121 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2122 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2123 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2124 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2125 objArrayHandle dest(THREAD, dest_o); |
2126 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2127 dest->obj_at_put(0, str()); | |
2128 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2129 dest->obj_at_put(1, str()); | |
2130 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2131 dest->obj_at_put(2, str()); | |
2132 return (jobjectArray) JNIHandles::make_local(dest()); | |
2133 } | |
2134 JVM_END | |
2135 | |
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2136 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2137 { |
2138 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2139 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2140 bounds_check(cp, index, CHECK_0); |
2141 constantTag tag = cp->tag_at(index); | |
2142 if (!tag.is_int()) { | |
2143 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2144 } | |
2145 return cp->int_at(index); | |
2146 } | |
2147 JVM_END | |
2148 | |
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2149 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2150 { |
2151 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2152 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2153 bounds_check(cp, index, CHECK_(0L)); |
2154 constantTag tag = cp->tag_at(index); | |
2155 if (!tag.is_long()) { | |
2156 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2157 } | |
2158 return cp->long_at(index); | |
2159 } | |
2160 JVM_END | |
2161 | |
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2162 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2163 { |
2164 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2165 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2166 bounds_check(cp, index, CHECK_(0.0f)); |
2167 constantTag tag = cp->tag_at(index); | |
2168 if (!tag.is_float()) { | |
2169 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2170 } | |
2171 return cp->float_at(index); | |
2172 } | |
2173 JVM_END | |
2174 | |
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2175 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2176 { |
2177 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2178 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2179 bounds_check(cp, index, CHECK_(0.0)); |
2180 constantTag tag = cp->tag_at(index); | |
2181 if (!tag.is_double()) { | |
2182 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2183 } | |
2184 return cp->double_at(index); | |
2185 } | |
2186 JVM_END | |
2187 | |
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2188 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2189 { |
2190 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2191 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2192 bounds_check(cp, index, CHECK_NULL); |
2193 constantTag tag = cp->tag_at(index); | |
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2194 if (!tag.is_string()) { |
0 | 2195 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2196 } | |
2197 oop str = cp->string_at(index, CHECK_NULL); | |
2198 return (jstring) JNIHandles::make_local(str); | |
2199 } | |
2200 JVM_END | |
2201 | |
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2202 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2203 { |
2204 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2205 JvmtiVMObjectAllocEventCollector oam; | |
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2206 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2207 bounds_check(cp, index, CHECK_NULL); |
2208 constantTag tag = cp->tag_at(index); | |
2209 if (!tag.is_symbol()) { | |
2210 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2211 } | |
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2212 Symbol* sym = cp->symbol_at(index); |
0 | 2213 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2214 return (jstring) JNIHandles::make_local(str()); | |
2215 } | |
2216 JVM_END | |
2217 | |
2218 | |
2219 // Assertion support. ////////////////////////////////////////////////////////// | |
2220 | |
2221 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2222 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2223 assert(cls != NULL, "bad class"); | |
2224 | |
2225 oop r = JNIHandles::resolve(cls); | |
2226 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2227 if (java_lang_Class::is_primitive(r)) return false; | |
2228 | |
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2229 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2230 assert(k->oop_is_instance(), "must be an instance klass"); |
2231 if (! k->oop_is_instance()) return false; | |
0 | 2232 |
2233 ResourceMark rm(THREAD); | |
6983 | 2234 const char* name = k->name()->as_C_string(); |
2235 bool system_class = k->class_loader() == NULL; | |
0 | 2236 return JavaAssertions::enabled(name, system_class); |
2237 | |
2238 JVM_END | |
2239 | |
2240 | |
2241 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2242 // command-line assertion arguments (i.e., -ea, -da). | |
2243 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2244 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2245 JvmtiVMObjectAllocEventCollector oam; | |
2246 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2247 return JNIHandles::make_local(env, asd); | |
2248 JVM_END | |
2249 | |
2250 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2251 | |
2252 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2253 | |
2254 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2255 // All functions from this section should call the jvmtiThreadSate function: | |
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2256 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2257 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2258 // was invoked in the middle of the class redefinition. |
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2259 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2260 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2261 | |
2262 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2263 JVMWrapper("JVM_GetClassNameUTF"); | |
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2264 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2265 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2266 return k->name()->as_utf8(); |
0 | 2267 JVM_END |
2268 | |
2269 | |
2270 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2271 JVMWrapper("JVM_GetClassCPTypes"); | |
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2272 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2273 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2274 // types will have length zero if this is not an InstanceKlass |
0 | 2275 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2276 if (k->oop_is_instance()) { |
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2277 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2278 for (int index = cp->length() - 1; index >= 0; index--) { |
2279 constantTag tag = cp->tag_at(index); | |
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2280 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2281 } |
2282 } | |
2283 JVM_END | |
2284 | |
2285 | |
2286 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2287 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2288 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2289 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2290 if (!k->oop_is_instance()) |
0 | 2291 return 0; |
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2292 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2293 JVM_END |
2294 | |
2295 | |
2296 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2297 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2298 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2299 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2300 if (!k->oop_is_instance()) |
0 | 2301 return 0; |
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2302 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2303 JVM_END |
2304 | |
2305 | |
2306 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2307 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2308 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2309 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2310 if (!k->oop_is_instance()) |
0 | 2311 return 0; |
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2312 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2313 JVM_END |
2314 | |
2315 | |
2316 // The following methods, used for the verifier, are never called with | |
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2317 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2318 // Typically, these methods are called in a loop with bounds determined |
2319 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2320 // zero for arrays. | |
2321 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2322 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2323 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2324 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2325 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2326 int length = method->checked_exceptions_length(); |
0 | 2327 if (length > 0) { |
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2328 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2329 for (int i = 0; i < length; i++) { |
2330 exceptions[i] = table[i].class_cp_index; | |
2331 } | |
2332 } | |
2333 JVM_END | |
2334 | |
2335 | |
2336 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2337 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2338 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2339 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2340 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2341 return method->checked_exceptions_length(); |
0 | 2342 JVM_END |
2343 | |
2344 | |
2345 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2346 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2347 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2348 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2349 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2350 memcpy(code, method->code_base(), method->code_size()); |
0 | 2351 JVM_END |
2352 | |
2353 | |
2354 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2355 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2356 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2357 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2358 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2359 return method->code_size(); |
0 | 2360 JVM_END |
2361 | |
2362 | |
2363 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2364 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2365 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2366 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2367 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2368 ExceptionTable extable(method); |
6213
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2369 entry->start_pc = extable.start_pc(entry_index); |
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2370 entry->end_pc = extable.end_pc(entry_index); |
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2371 entry->handler_pc = extable.handler_pc(entry_index); |
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2372 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2373 JVM_END |
2374 | |
2375 | |
2376 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2377 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2378 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2379 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2380 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2381 return method->exception_table_length(); |
0 | 2382 JVM_END |
2383 | |
2384 | |
2385 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2386 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2387 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2388 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2389 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2390 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2391 JVM_END |
2392 | |
2393 | |
2394 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2395 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2396 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2397 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2398 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2399 JVM_END |
2400 | |
2401 | |
2402 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2403 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2404 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2405 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2406 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2407 return method->max_locals(); |
0 | 2408 JVM_END |
2409 | |
2410 | |
2411 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2412 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2413 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2414 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2415 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2416 return method->size_of_parameters(); |
0 | 2417 JVM_END |
2418 | |
2419 | |
2420 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2421 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2422 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2423 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2424 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2425 return method->verifier_max_stack(); |
0 | 2426 JVM_END |
2427 | |
2428 | |
2429 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2430 JVMWrapper("JVM_IsConstructorIx"); | |
2431 ResourceMark rm(THREAD); | |
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2432 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2433 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2434 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2435 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2436 JVM_END |
2437 | |
2438 | |
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2439 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2440 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2441 ResourceMark rm(THREAD); |
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2442 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2443 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2444 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2445 return method->is_overpass(); |
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|
2446 JVM_END |
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2447 |
0 | 2448 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2449 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2450 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2451 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2452 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2453 return method->name()->as_utf8(); |
0 | 2454 JVM_END |
2455 | |
2456 | |
2457 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2458 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2459 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2460 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2461 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2462 return method->signature()->as_utf8(); |
0 | 2463 JVM_END |
2464 | |
2465 /** | |
2466 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2467 * read entries in the constant pool. Since the old verifier always | |
2468 * works on a copy of the code, it will not see any rewriting that | |
2469 * may possibly occur in the middle of verification. So it is important | |
2470 * that nothing it calls tries to use the cpCache instead of the raw | |
2471 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2472 */ | |
2473 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2474 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2475 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2476 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2477 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2478 switch (cp->tag_at(cp_index).value()) { |
2479 case JVM_CONSTANT_Fieldref: | |
2480 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2481 default: | |
2482 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2483 } | |
2484 ShouldNotReachHere(); | |
2485 return NULL; | |
2486 JVM_END | |
2487 | |
2488 | |
2489 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2490 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2491 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2492 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2493 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2494 switch (cp->tag_at(cp_index).value()) { |
2495 case JVM_CONSTANT_InterfaceMethodref: | |
2496 case JVM_CONSTANT_Methodref: | |
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2497 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2498 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2499 default: | |
2500 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2501 } | |
2502 ShouldNotReachHere(); | |
2503 return NULL; | |
2504 JVM_END | |
2505 | |
2506 | |
2507 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2508 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2509 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2510 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2511 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2512 switch (cp->tag_at(cp_index).value()) { |
2513 case JVM_CONSTANT_InterfaceMethodref: | |
2514 case JVM_CONSTANT_Methodref: | |
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2515 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2516 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2517 default: | |
2518 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2519 } | |
2520 ShouldNotReachHere(); | |
2521 return NULL; | |
2522 JVM_END | |
2523 | |
2524 | |
2525 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2526 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2527 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2528 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2529 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2530 switch (cp->tag_at(cp_index).value()) { |
2531 case JVM_CONSTANT_Fieldref: | |
2532 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2533 default: | |
2534 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2535 } | |
2536 ShouldNotReachHere(); | |
2537 return NULL; | |
2538 JVM_END | |
2539 | |
2540 | |
2541 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2542 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2543 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2544 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2545 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2546 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2547 return classname->as_utf8(); |
2548 JVM_END | |
2549 | |
2550 | |
2551 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2552 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2553 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2554 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2555 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2556 switch (cp->tag_at(cp_index).value()) { |
2557 case JVM_CONSTANT_Fieldref: { | |
2558 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2559 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2560 return classname->as_utf8(); |
2561 } | |
2562 default: | |
2563 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2564 } | |
2565 ShouldNotReachHere(); | |
2566 return NULL; | |
2567 JVM_END | |
2568 | |
2569 | |
2570 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2571 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2572 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2573 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2574 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2575 switch (cp->tag_at(cp_index).value()) { |
2576 case JVM_CONSTANT_Methodref: | |
2577 case JVM_CONSTANT_InterfaceMethodref: { | |
2578 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2579 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2580 return classname->as_utf8(); |
2581 } | |
2582 default: | |
2583 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2584 } | |
2585 ShouldNotReachHere(); | |
2586 return NULL; | |
2587 JVM_END | |
2588 | |
2589 | |
3938 | 2590 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2591 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2592 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2593 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2594 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2595 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2596 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2597 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2598 switch (cp->tag_at(cp_index).value()) { |
2599 case JVM_CONSTANT_Fieldref: { | |
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2600 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2601 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2602 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2603 if (fs.name() == name && fs.signature() == signature) { | |
2604 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2605 } |
2606 } | |
2607 return -1; | |
2608 } | |
2609 default: | |
2610 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2611 } | |
2612 ShouldNotReachHere(); | |
2613 return 0; | |
2614 JVM_END | |
2615 | |
2616 | |
2617 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2618 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2619 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2620 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2621 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2622 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2623 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2624 switch (cp->tag_at(cp_index).value()) { |
2625 case JVM_CONSTANT_Methodref: | |
2626 case JVM_CONSTANT_InterfaceMethodref: { | |
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2627 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2628 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2629 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2630 int methods_count = methods->length(); |
2631 for (int i = 0; i < methods_count; i++) { | |
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2632 Method* method = methods->at(i); |
0 | 2633 if (method->name() == name && method->signature() == signature) { |
2634 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2635 } | |
2636 } | |
2637 return -1; | |
2638 } | |
2639 default: | |
2640 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2641 } | |
2642 ShouldNotReachHere(); | |
2643 return 0; | |
2644 JVM_END | |
2645 | |
2646 | |
2647 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2648 | |
2649 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2650 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2651 JVM_END | |
2652 | |
2653 | |
2654 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2655 JVMWrapper("JVM_IsSameClassPackage"); | |
2656 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2657 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2658 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2659 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2660 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2661 JVM_END | |
2662 | |
2663 | |
2664 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2665 | |
2666 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2667 JVMWrapper2("JVM_Open (%s)", fname); | |
2668 | |
2669 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
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|
2670 int result = os::open(fname, flags, mode); |
0 | 2671 if (result >= 0) { |
2672 return result; | |
2673 } else { | |
2674 switch(errno) { | |
2675 case EEXIST: | |
2676 return JVM_EEXIST; | |
2677 default: | |
2678 return -1; | |
2679 } | |
2680 } | |
2681 JVM_END | |
2682 | |
2683 | |
2684 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2685 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2686 //%note jvm_r6 | |
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diff
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|
2687 return os::close(fd); |
0 | 2688 JVM_END |
2689 | |
2690 | |
2691 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2692 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2693 | |
2694 //%note jvm_r6 | |
1980
828eafbd85cc
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ikrylov
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|
2695 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2696 JVM_END |
2697 | |
2698 | |
2699 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2700 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2701 | |
2702 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
2703 return (jint)os::write(fd, buf, nbytes); |
0 | 2704 JVM_END |
2705 | |
2706 | |
2707 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2708 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2709 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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|
2710 return os::available(fd, pbytes); |
0 | 2711 JVM_END |
2712 | |
2713 | |
2714 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2715 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2716 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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|
2717 return os::lseek(fd, offset, whence); |
0 | 2718 JVM_END |
2719 | |
2720 | |
2721 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2722 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
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828eafbd85cc
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ikrylov
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|
2723 return os::ftruncate(fd, length); |
0 | 2724 JVM_END |
2725 | |
2726 | |
2727 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2728 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2729 //%note jvm_r6 | |
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|
2730 return os::fsync(fd); |
0 | 2731 JVM_END |
2732 | |
2733 | |
2734 // Printing support ////////////////////////////////////////////////// | |
2735 extern "C" { | |
2736 | |
2737 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2738 // see bug 4399518, 4417214 | |
2739 if ((intptr_t)count <= 0) return -1; | |
2740 return vsnprintf(str, count, fmt, args); | |
2741 } | |
2742 | |
2743 | |
2744 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2745 va_list args; | |
2746 int len; | |
2747 va_start(args, fmt); | |
2748 len = jio_vsnprintf(str, count, fmt, args); | |
2749 va_end(args); | |
2750 return len; | |
2751 } | |
2752 | |
2753 | |
2754 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2755 int len; | |
2756 va_list args; | |
2757 va_start(args, fmt); | |
2758 len = jio_vfprintf(f, fmt, args); | |
2759 va_end(args); | |
2760 return len; | |
2761 } | |
2762 | |
2763 | |
2764 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2765 if (Arguments::vfprintf_hook() != NULL) { | |
2766 return Arguments::vfprintf_hook()(f, fmt, args); | |
2767 } else { | |
2768 return vfprintf(f, fmt, args); | |
2769 } | |
2770 } | |
2771 | |
2772 | |
2191 | 2773 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2774 int len; |
2775 va_list args; | |
2776 va_start(args, fmt); | |
2777 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2778 va_end(args); | |
2779 return len; | |
2780 } | |
2781 | |
2782 | |
2783 // HotSpot specific jio method | |
2784 void jio_print(const char* s) { | |
2785 // Try to make this function as atomic as possible. | |
2786 if (Arguments::vfprintf_hook() != NULL) { | |
2787 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2788 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
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431
diff
changeset
|
2789 // 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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diff
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|
2790 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2791 } |
2792 } | |
2793 | |
2794 } // Extern C | |
2795 | |
2796 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2797 | |
2798 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2799 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2800 // OSThread objects. The exception to this rule is when the target object is the thread | |
2801 // doing the operation, in which case we know that the thread won't exit until the | |
2802 // operation is done (all exits being voluntary). There are a few cases where it is | |
2803 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2804 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2805 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2806 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2807 // implementation is local to this file, we always lock Threads_lock for that one. | |
2808 | |
2809 static void thread_entry(JavaThread* thread, TRAPS) { | |
2810 HandleMark hm(THREAD); | |
2811 Handle obj(THREAD, thread->threadObj()); | |
2812 JavaValue result(T_VOID); | |
2813 JavaCalls::call_virtual(&result, | |
2814 obj, | |
1142 | 2815 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
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|
2816 vmSymbols::run_method_name(), |
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|
2817 vmSymbols::void_method_signature(), |
0 | 2818 THREAD); |
2819 } | |
2820 | |
2821 | |
2822 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2823 JVMWrapper("JVM_StartThread"); | |
2824 JavaThread *native_thread = NULL; | |
2825 | |
2826 // We cannot hold the Threads_lock when we throw an exception, | |
2827 // due to rank ordering issues. Example: we might need to grab the | |
2828 // Heap_lock while we construct the exception. | |
2829 bool throw_illegal_thread_state = false; | |
2830 | |
2831 // We must release the Threads_lock before we can post a jvmti event | |
2832 // in Thread::start. | |
2833 { | |
2834 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2835 // we operate. | |
2836 MutexLocker mu(Threads_lock); | |
2837 | |
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
|
2838 // 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
|
2839 // 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
|
2840 // 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
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diff
changeset
|
2841 // there is a small window between the Thread object being created |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2842 // (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
|
2843 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2844 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
|
2845 throw_illegal_thread_state = true; |
0 | 2846 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2847 // We could also check the stillborn flag to see if this thread was already stopped, but |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2848 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2849 |
0 | 2850 jlong size = |
2851 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2852 // Allocate the C++ Thread structure and create the native thread. The | |
2853 // stack size retrieved from java is signed, but the constructor takes | |
2854 // size_t (an unsigned type), so avoid passing negative values which would | |
2855 // result in really large stacks. | |
2856 size_t sz = size > 0 ? (size_t) size : 0; | |
2857 native_thread = new JavaThread(&thread_entry, sz); | |
2858 | |
2859 // At this point it may be possible that no osthread was created for the | |
2860 // JavaThread due to lack of memory. Check for this situation and throw | |
2861 // an exception if necessary. Eventually we may want to change this so | |
2862 // that we only grab the lock if the thread was created successfully - | |
2863 // then we can also do this check and throw the exception in the | |
2864 // JavaThread constructor. | |
2865 if (native_thread->osthread() != NULL) { | |
2866 // Note: the current thread is not being used within "prepare". | |
2867 native_thread->prepare(jthread); | |
2868 } | |
2869 } | |
2870 } | |
2871 | |
2872 if (throw_illegal_thread_state) { | |
2873 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2874 } | |
2875 | |
2876 assert(native_thread != NULL, "Starting null thread?"); | |
2877 | |
2878 if (native_thread->osthread() == NULL) { | |
2879 // No one should hold a reference to the 'native_thread'. | |
2880 delete native_thread; | |
2881 if (JvmtiExport::should_post_resource_exhausted()) { | |
2882 JvmtiExport::post_resource_exhausted( | |
2883 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2884 "unable to create new native thread"); | |
2885 } | |
2886 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2887 "unable to create new native thread"); | |
2888 } | |
2889 | |
2890 Thread::start(native_thread); | |
2891 | |
2892 JVM_END | |
2893 | |
2894 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2895 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2896 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2897 // same thread as the sender, no safepoint is needed. |
0 | 2898 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2899 JVMWrapper("JVM_StopThread"); | |
2900 | |
2901 oop java_throwable = JNIHandles::resolve(throwable); | |
2902 if (java_throwable == NULL) { | |
2903 THROW(vmSymbols::java_lang_NullPointerException()); | |
2904 } | |
2905 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2906 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2907 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
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parents:
4717
diff
changeset
|
2908 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
aa3d708d67c4
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parents:
4717
diff
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|
2909 receiver, (address)java_thread, throwable); |
2162
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diff
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|
2910 // First check if thread is alive |
0 | 2911 if (receiver != NULL) { |
2912 // Check if exception is getting thrown at self (use oop equality, since the | |
2913 // target object might exit) | |
2914 if (java_thread == thread->threadObj()) { | |
2915 THROW_OOP(java_throwable); | |
2916 } else { | |
2917 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2918 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2919 } | |
2920 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2921 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2922 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2923 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
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|
2924 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2925 // 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
|
2926 // 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
|
2927 // 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
|
2928 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2929 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2930 } |
0 | 2931 JVM_END |
2932 | |
2933 | |
2934 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2935 JVMWrapper("JVM_IsThreadAlive"); | |
2936 | |
2937 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2938 return java_lang_Thread::is_alive(thread_oop); | |
2939 JVM_END | |
2940 | |
2941 | |
2942 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2943 JVMWrapper("JVM_SuspendThread"); | |
2944 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2945 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2946 | |
2947 if (receiver != NULL) { | |
2948 // thread has run and has not exited (still on threads list) | |
2949 | |
2950 { | |
2951 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2952 if (receiver->is_external_suspend()) { | |
2953 // Don't allow nested external suspend requests. We can't return | |
2954 // an error from this interface so just ignore the problem. | |
2955 return; | |
2956 } | |
2957 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2958 return; | |
2959 } | |
2960 receiver->set_external_suspend(); | |
2961 } | |
2962 | |
2963 // java_suspend() will catch threads in the process of exiting | |
2964 // and will ignore them. | |
2965 receiver->java_suspend(); | |
2966 | |
2967 // It would be nice to have the following assertion in all the | |
2968 // time, but it is possible for a racing resume request to have | |
2969 // resumed this thread right after we suspended it. Temporarily | |
2970 // enable this assertion if you are chasing a different kind of | |
2971 // bug. | |
2972 // | |
2973 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2974 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2975 } | |
2976 JVM_END | |
2977 | |
2978 | |
2979 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2980 JVMWrapper("JVM_ResumeThread"); | |
2981 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2982 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2983 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2984 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2985 // looks at it. | |
2986 MutexLocker ml(Threads_lock); | |
2987 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2988 if (thr != NULL) { | |
2989 // the thread has run and is not in the process of exiting | |
2990 thr->java_resume(); | |
2991 } | |
2992 JVM_END | |
2993 | |
2994 | |
2995 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2996 JVMWrapper("JVM_SetThreadPriority"); | |
2997 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2998 MutexLocker ml(Threads_lock); | |
2999 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3000 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3001 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3002 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3003 Thread::set_priority(thr, (ThreadPriority)prio); | |
3004 } | |
3005 JVM_END | |
3006 | |
3007 | |
3008 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3009 JVMWrapper("JVM_Yield"); | |
3010 if (os::dont_yield()) return; | |
4006 | 3011 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3012 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3013 #else /* USDT2 */ |
3014 HOTSPOT_THREAD_YIELD(); | |
3015 #endif /* USDT2 */ | |
0 | 3016 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3017 // Critical for similar threading behaviour | |
3018 if (ConvertYieldToSleep) { | |
3019 os::sleep(thread, MinSleepInterval, false); | |
3020 } else { | |
3021 os::yield(); | |
3022 } | |
3023 JVM_END | |
3024 | |
3025 | |
3026 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3027 JVMWrapper("JVM_Sleep"); | |
3028 | |
3029 if (millis < 0) { | |
3030 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3031 } | |
3032 | |
3033 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3034 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3035 } | |
3036 | |
3037 // Save current thread state and restore it at the end of this block. | |
3038 // And set new thread state to SLEEPING. | |
3039 JavaThreadSleepState jtss(thread); | |
3040 | |
4006 | 3041 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3042 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3043 #else /* USDT2 */ |
3044 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3045 millis); | |
3046 #endif /* USDT2 */ | |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3047 |
10405 | 3048 EventThreadSleep event; |
3049 | |
0 | 3050 if (millis == 0) { |
3051 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3052 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3053 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3054 // for SOLARIS | |
3055 if (ConvertSleepToYield) { | |
3056 os::yield(); | |
3057 } else { | |
3058 ThreadState old_state = thread->osthread()->get_state(); | |
3059 thread->osthread()->set_state(SLEEPING); | |
3060 os::sleep(thread, MinSleepInterval, false); | |
3061 thread->osthread()->set_state(old_state); | |
3062 } | |
3063 } else { | |
3064 ThreadState old_state = thread->osthread()->get_state(); | |
3065 thread->osthread()->set_state(SLEEPING); | |
3066 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3067 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3068 // us while we were sleeping. We do not overwrite those. | |
3069 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3070 if (event.should_commit()) { |
3071 event.set_time(millis); | |
3072 event.commit(); | |
3073 } | |
4006 | 3074 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3075 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3076 #else /* USDT2 */ |
3077 HOTSPOT_THREAD_SLEEP_END( | |
3078 1); | |
3079 #endif /* USDT2 */ | |
0 | 3080 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3081 // to properly restore the thread state. That's likely wrong. | |
3082 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3083 } | |
3084 } | |
3085 thread->osthread()->set_state(old_state); | |
3086 } | |
10405 | 3087 if (event.should_commit()) { |
3088 event.set_time(millis); | |
3089 event.commit(); | |
3090 } | |
4006 | 3091 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3092 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3093 #else /* USDT2 */ |
3094 HOTSPOT_THREAD_SLEEP_END( | |
3095 0); | |
3096 #endif /* USDT2 */ | |
0 | 3097 JVM_END |
3098 | |
3099 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3100 JVMWrapper("JVM_CurrentThread"); | |
3101 oop jthread = thread->threadObj(); | |
3102 assert (thread != NULL, "no current thread!"); | |
3103 return JNIHandles::make_local(env, jthread); | |
3104 JVM_END | |
3105 | |
3106 | |
3107 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3108 JVMWrapper("JVM_CountStackFrames"); | |
3109 | |
3110 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3111 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3112 bool throw_illegal_thread_state = false; | |
3113 int count = 0; | |
3114 | |
3115 { | |
3116 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3117 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3118 // acquire of the lock | |
3119 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3120 | |
3121 if (thr == NULL) { | |
3122 // do nothing | |
3123 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3124 // Check whether this java thread has been suspended already. If not, throws | |
3125 // IllegalThreadStateException. We defer to throw that exception until | |
3126 // Threads_lock is released since loading exception class has to leave VM. | |
3127 // The correct way to test a thread is actually suspended is | |
3128 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3129 // the Threads_lock. The above tests are sufficient for our purposes | |
3130 // provided the walkability of the stack is stable - which it isn't | |
3131 // 100% but close enough for most practical purposes. | |
3132 throw_illegal_thread_state = true; | |
3133 } else { | |
3134 // Count all java activation, i.e., number of vframes | |
3135 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3136 // Native frames are not counted | |
3137 if (!vfst.method()->is_native()) count++; | |
3138 } | |
3139 } | |
3140 } | |
3141 | |
3142 if (throw_illegal_thread_state) { | |
3143 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3144 "this thread is not suspended"); | |
3145 } | |
3146 return count; | |
3147 JVM_END | |
3148 | |
3149 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3150 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3151 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3152 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3153 // outside the critical section. Threads_lock is hot so we want to minimize | |
3154 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3155 // two steps. The 1st phase, performed under Threads_lock, would return | |
3156 // a closure that'd be invoked after Threads_lock was dropped. | |
3157 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3158 // admit spurious wakeups. | |
3159 | |
3160 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3161 JVMWrapper("JVM_Interrupt"); | |
3162 | |
3163 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3164 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3165 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3166 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3167 // acquire of the lock | |
3168 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3169 if (thr != NULL) { | |
3170 Thread::interrupt(thr); | |
3171 } | |
3172 JVM_END | |
3173 | |
3174 | |
3175 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3176 JVMWrapper("JVM_IsInterrupted"); | |
3177 | |
3178 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3179 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3180 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3181 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3182 // acquire of the lock | |
3183 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3184 if (thr == NULL) { | |
3185 return JNI_FALSE; | |
3186 } else { | |
3187 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3188 } | |
3189 JVM_END | |
3190 | |
3191 | |
3192 // Return true iff the current thread has locked the object passed in | |
3193 | |
3194 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3195 JVMWrapper("JVM_HoldsLock"); | |
3196 assert(THREAD->is_Java_thread(), "sanity check"); | |
3197 if (obj == NULL) { | |
3198 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3199 } | |
3200 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3201 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3202 JVM_END | |
3203 | |
3204 | |
3205 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3206 JVMWrapper("JVM_DumpAllStacks"); | |
3207 VM_PrintThreads op; | |
3208 VMThread::execute(&op); | |
3209 if (JvmtiExport::should_post_data_dump()) { | |
3210 JvmtiExport::post_data_dump(); | |
3211 } | |
3212 JVM_END | |
3213 | |
4006 | 3214 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3215 JVMWrapper("JVM_SetNativeThreadName"); | |
3216 ResourceMark rm(THREAD); | |
3217 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3218 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3219 // Thread naming only supported for the current thread, doesn't work for | |
3220 // target threads. | |
3221 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3222 // we don't set the name of an attached thread to avoid stepping | |
3223 // on other programs | |
3224 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3225 os::set_native_thread_name(thread_name); | |
3226 } | |
3227 JVM_END | |
0 | 3228 |
3229 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3230 | |
3231 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3232 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3233 if (jthread->privileged_stack_top() == NULL) return false; | |
3234 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3235 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3236 if (loader == NULL) return true; | |
3237 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3238 if (trusted) return true; | |
3239 } | |
3240 return false; | |
3241 } | |
3242 | |
3243 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3244 JVMWrapper("JVM_CurrentLoadedClass"); | |
3245 ResourceMark rm(THREAD); | |
3246 | |
3247 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3248 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3249 bool trusted = is_trusted_frame(thread, &vfst); | |
3250 if (trusted) return NULL; | |
3251 | |
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3252 Method* m = vfst.method(); |
0 | 3253 if (!m->is_native()) { |
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3254 InstanceKlass* holder = m->method_holder(); |
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3255 oop loader = holder->class_loader(); |
0 | 3256 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
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3257 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3258 } |
3259 } | |
3260 } | |
3261 return NULL; | |
3262 JVM_END | |
3263 | |
3264 | |
3265 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3266 JVMWrapper("JVM_CurrentClassLoader"); | |
3267 ResourceMark rm(THREAD); | |
3268 | |
3269 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3270 | |
3271 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3272 bool trusted = is_trusted_frame(thread, &vfst); | |
3273 if (trusted) return NULL; | |
3274 | |
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3275 Method* m = vfst.method(); |
0 | 3276 if (!m->is_native()) { |
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3277 InstanceKlass* holder = m->method_holder(); |
0 | 3278 assert(holder->is_klass(), "just checking"); |
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3279 oop loader = holder->class_loader(); |
0 | 3280 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3281 return JNIHandles::make_local(env, loader); | |
3282 } | |
3283 } | |
3284 } | |
3285 return NULL; | |
3286 JVM_END | |
3287 | |
3288 | |
3289 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3290 JVMWrapper("JVM_GetClassContext"); | |
3291 ResourceMark rm(THREAD); | |
3292 JvmtiVMObjectAllocEventCollector oam; | |
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|
3293 vframeStream vfst(thread); |
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|
3294 |
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|
3295 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3296 // This must only be called from SecurityManager.getClassContext |
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3297 Method* m = vfst.method(); |
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3298 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3299 m->name() == vmSymbols::getClassContext_name() && |
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3300 m->signature() == vmSymbols::void_class_array_signature())) { |
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3301 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3302 } |
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|
3303 } |
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|
3304 |
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|
3305 // Collect method holders |
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3306 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3307 for (; !vfst.at_end(); vfst.security_next()) { |
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3308 Method* m = vfst.method(); |
0 | 3309 // Native frames are not returned |
8866
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3310 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3311 Klass* holder = m->method_holder(); |
0 | 3312 assert(holder->is_klass(), "just checking"); |
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|
3313 klass_array->append(holder); |
0 | 3314 } |
3315 } | |
3316 | |
3317 // Create result array of type [Ljava/lang/Class; | |
11001
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3318 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3319 // Fill in mirrors corresponding to method holders |
11001
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|
3320 for (int i = 0; i < klass_array->length(); i++) { |
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|
3321 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3322 } |
3323 | |
3324 return (jobjectArray) JNIHandles::make_local(env, result); | |
3325 JVM_END | |
3326 | |
3327 | |
3328 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3329 JVMWrapper("JVM_ClassDepth"); | |
3330 ResourceMark rm(THREAD); | |
3331 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3332 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3333 | |
3334 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3335 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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|
3336 if (class_name_sym == NULL) { |
0 | 3337 return -1; |
3338 } | |
3339 | |
3340 int depth = 0; | |
3341 | |
3342 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3343 if (!vfst.method()->is_native()) { | |
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|
3344 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3345 assert(holder->is_klass(), "just checking"); |
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|
3346 if (holder->name() == class_name_sym) { |
0 | 3347 return depth; |
3348 } | |
3349 depth++; | |
3350 } | |
3351 } | |
3352 return -1; | |
3353 JVM_END | |
3354 | |
3355 | |
3356 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3357 JVMWrapper("JVM_ClassLoaderDepth"); | |
3358 ResourceMark rm(THREAD); | |
3359 int depth = 0; | |
3360 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3361 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3362 bool trusted = is_trusted_frame(thread, &vfst); | |
3363 if (trusted) return -1; | |
3364 | |
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3365 Method* m = vfst.method(); |
0 | 3366 if (!m->is_native()) { |
6940
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|
3367 InstanceKlass* holder = m->method_holder(); |
0 | 3368 assert(holder->is_klass(), "just checking"); |
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3369 oop loader = holder->class_loader(); |
0 | 3370 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3371 return depth; | |
3372 } | |
3373 depth++; | |
3374 } | |
3375 } | |
3376 return -1; | |
3377 JVM_END | |
3378 | |
3379 | |
3380 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3381 | |
3382 | |
3383 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3384 JVMWrapper("JVM_GetSystemPackage"); | |
3385 ResourceMark rm(THREAD); | |
3386 JvmtiVMObjectAllocEventCollector oam; | |
3387 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3388 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3389 return (jstring) JNIHandles::make_local(result); | |
3390 JVM_END | |
3391 | |
3392 | |
3393 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3394 JVMWrapper("JVM_GetSystemPackages"); | |
3395 JvmtiVMObjectAllocEventCollector oam; | |
3396 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3397 return (jobjectArray) JNIHandles::make_local(result); | |
3398 JVM_END | |
3399 | |
3400 | |
3401 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3402 | |
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3403 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3404 if (current_class == NULL) { |
3405 return true; | |
3406 } | |
3407 if ((current_class == field_class) || access.is_public()) { | |
3408 return true; | |
3409 } | |
3410 | |
3411 if (access.is_protected()) { | |
3412 // See if current_class is a subclass of field_class | |
6983 | 3413 if (current_class->is_subclass_of(field_class)) { |
0 | 3414 return true; |
3415 } | |
3416 } | |
3417 | |
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3418 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3419 } |
3420 | |
3421 | |
3422 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3423 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3424 JVMWrapper("JVM_AllocateNewObject"); | |
3425 JvmtiVMObjectAllocEventCollector oam; | |
3426 // Receiver is not used | |
3427 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3428 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3429 | |
3430 // Cannot instantiate primitive types | |
3431 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3432 ResourceMark rm(THREAD); | |
3433 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3434 } | |
3435 | |
3436 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3437 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3438 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3439 ResourceMark rm(THREAD); |
3440 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3441 } | |
3442 | |
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|
3443 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3444 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3445 |
3446 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3447 | |
3448 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3449 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3450 | |
3451 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3452 curr_klass->initialize(CHECK_NULL); | |
3453 | |
3454 methodHandle m (THREAD, | |
3455 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3456 vmSymbols::void_method_signature())); | |
3457 if (m.is_null()) { | |
3458 ResourceMark rm(THREAD); | |
3459 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3460 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3461 vmSymbols::object_initializer_name(), |
3462 vmSymbols::void_method_signature())); | |
3463 } | |
3464 | |
3465 if (curr_klass == init_klass && !m->is_public()) { | |
3466 // Calling the constructor for class 'curr_klass'. | |
3467 // Only allow calls to a public no-arg constructor. | |
3468 // This path corresponds to creating an Externalizable object. | |
3469 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3470 } | |
3471 | |
3472 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3473 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3474 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3475 } | |
3476 | |
3477 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3478 // Call constructor m. This might call a constructor higher up in the hierachy | |
3479 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3480 | |
3481 return JNIHandles::make_local(obj()); | |
3482 JVM_END | |
3483 | |
3484 | |
3485 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3486 JVMWrapper("JVM_AllocateNewArray"); | |
3487 JvmtiVMObjectAllocEventCollector oam; | |
3488 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3489 | |
3490 if (java_lang_Class::is_primitive(mirror)) { | |
3491 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3492 } | |
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|
3493 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3494 oop result; |
3495 | |
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|
3496 if (k->oop_is_typeArray()) { |
0 | 3497 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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diff
changeset
|
3498 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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|
3499 } else if (k->oop_is_objArray()) { |
0 | 3500 // objArray |
6831
d8ce2825b193
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coleenp
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changeset
|
3501 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3502 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3503 result = oak->allocate(length, CHECK_NULL); | |
3504 } else { | |
3505 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3506 } | |
3507 return JNIHandles::make_local(env, result); | |
3508 JVM_END | |
3509 | |
3510 | |
3511 // Return the first non-null class loader up the execution stack, or null | |
3512 // if only code from the null class loader is on the stack. | |
3513 | |
3514 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3515 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3516 // UseNewReflection | |
3517 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
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changeset
|
3518 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3519 if (loader != NULL) { |
3520 return JNIHandles::make_local(env, loader); | |
3521 } | |
3522 } | |
3523 return NULL; | |
3524 JVM_END | |
3525 | |
3526 | |
3527 // Load a class relative to the most recent class on the stack with a non-null | |
3528 // classloader. | |
3529 // This function has been deprecated and should not be considered part of the | |
3530 // specified JVM interface. | |
3531 | |
3532 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3533 jclass currClass, jstring currClassName)) | |
3534 JVMWrapper("JVM_LoadClass0"); | |
3535 // Receiver is not used | |
3536 ResourceMark rm(THREAD); | |
3537 | |
3538 // Class name argument is not guaranteed to be in internal format | |
3539 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3540 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3541 | |
3542 const char* str = java_lang_String::as_utf8_string(string()); | |
3543 | |
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|
3544 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3545 // It's impossible to create this class; the name cannot fit |
3546 // into the constant pool. | |
3547 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3548 } | |
3549 | |
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|
3550 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3551 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3552 // Find the most recent class on the stack with a non-null classloader | |
3553 oop loader = NULL; | |
3554 oop protection_domain = NULL; | |
3555 if (curr_klass.is_null()) { | |
3556 for (vframeStream vfst(thread); | |
3557 !vfst.at_end() && loader == NULL; | |
3558 vfst.next()) { | |
3559 if (!vfst.method()->is_native()) { | |
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changeset
|
3560 InstanceKlass* holder = vfst.method()->method_holder(); |
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coleenp
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|
3561 loader = holder->class_loader(); |
18fb7da42534
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changeset
|
3562 protection_domain = holder->protection_domain(); |
0 | 3563 } |
3564 } | |
3565 } else { | |
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3566 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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|
3567 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
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|
3568 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3569 } |
3570 Handle h_loader(THREAD, loader); | |
3571 Handle h_prot (THREAD, protection_domain); | |
657
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6603316: Improve instrumentation for classes loaded at startup
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diff
changeset
|
3572 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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parents:
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diff
changeset
|
3573 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3574 if (TraceClassResolution && result != NULL) { |
6725
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3575 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
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diff
changeset
|
3576 } |
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6603316: Improve instrumentation for classes loaded at startup
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diff
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|
3577 return result; |
0 | 3578 JVM_END |
3579 | |
3580 | |
3581 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3582 | |
3583 | |
3584 // resolve array handle and check arguments | |
3585 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3586 if (arr == NULL) { | |
3587 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3588 } | |
3589 oop a = JNIHandles::resolve_non_null(arr); | |
6725
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|
3590 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3591 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3592 } | |
3593 return arrayOop(a); | |
3594 } | |
3595 | |
3596 | |
3597 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3598 JVMWrapper("JVM_GetArrayLength"); | |
3599 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3600 return a->length(); | |
3601 JVM_END | |
3602 | |
3603 | |
3604 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3605 JVMWrapper("JVM_Array_Get"); | |
3606 JvmtiVMObjectAllocEventCollector oam; | |
3607 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3608 jvalue value; | |
3609 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3610 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3611 return JNIHandles::make_local(env, box); | |
3612 JVM_END | |
3613 | |
3614 | |
3615 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3616 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3617 jvalue value; | |
3618 value.i = 0; // to initialize value before getting used in CHECK | |
3619 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3620 assert(a->is_typeArray(), "just checking"); | |
3621 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3622 BasicType wide_type = (BasicType) wCode; | |
3623 if (type != wide_type) { | |
3624 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3625 } | |
3626 return value; | |
3627 JVM_END | |
3628 | |
3629 | |
3630 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3631 JVMWrapper("JVM_SetArrayElement"); | |
3632 arrayOop a = check_array(env, arr, false, CHECK); | |
3633 oop box = JNIHandles::resolve(val); | |
3634 jvalue value; | |
3635 value.i = 0; // to initialize value before getting used in CHECK | |
3636 BasicType value_type; | |
3637 if (a->is_objArray()) { | |
3638 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3639 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3640 } else { | |
3641 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3642 } | |
3643 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3644 JVM_END | |
3645 | |
3646 | |
3647 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3648 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3649 arrayOop a = check_array(env, arr, true, CHECK); | |
3650 assert(a->is_typeArray(), "just checking"); | |
3651 BasicType value_type = (BasicType) vCode; | |
3652 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3653 JVM_END | |
3654 | |
3655 | |
3656 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3657 JVMWrapper("JVM_NewArray"); | |
3658 JvmtiVMObjectAllocEventCollector oam; | |
3659 oop element_mirror = JNIHandles::resolve(eltClass); | |
3660 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3661 return JNIHandles::make_local(env, result); | |
3662 JVM_END | |
3663 | |
3664 | |
3665 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3666 JVMWrapper("JVM_NewMultiArray"); | |
3667 JvmtiVMObjectAllocEventCollector oam; | |
3668 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3669 oop element_mirror = JNIHandles::resolve(eltClass); | |
3670 assert(dim_array->is_typeArray(), "just checking"); | |
3671 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3672 return JNIHandles::make_local(env, result); | |
3673 JVM_END | |
3674 | |
3675 | |
3676 // Networking library support //////////////////////////////////////////////////////////////////// | |
3677 | |
3678 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3679 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
3680 return 0; |
0 | 3681 JVM_END |
3682 | |
3683 | |
3684 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3685 JVMWrapper("JVM_Socket"); | |
1980
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diff
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|
3686 return os::socket(domain, type, protocol); |
0 | 3687 JVM_END |
3688 | |
3689 | |
3690 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3691 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3692 //%note jvm_r6 | |
1980
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changeset
|
3693 return os::socket_close(fd); |
0 | 3694 JVM_END |
3695 | |
3696 | |
3697 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3698 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3699 //%note jvm_r6 | |
1980
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|
3700 return os::socket_shutdown(fd, howto); |
0 | 3701 JVM_END |
3702 | |
3703 | |
3704 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3705 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3706 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3707 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3708 JVM_END |
3709 | |
3710 | |
3711 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3712 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3713 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3714 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3715 JVM_END |
3716 | |
3717 | |
3718 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3719 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3720 //%note jvm_r6 | |
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ikrylov
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diff
changeset
|
3721 return os::timeout(fd, timeout); |
0 | 3722 JVM_END |
3723 | |
3724 | |
3725 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3726 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3727 //%note jvm_r6 | |
1980
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ikrylov
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diff
changeset
|
3728 return os::listen(fd, count); |
0 | 3729 JVM_END |
3730 | |
3731 | |
3732 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3733 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3734 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3735 return os::connect(fd, him, (socklen_t)len); |
0 | 3736 JVM_END |
3737 | |
3738 | |
3739 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3740 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3741 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3742 return os::bind(fd, him, (socklen_t)len); |
0 | 3743 JVM_END |
3744 | |
3745 | |
3746 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3747 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3748 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3749 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3750 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3751 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3752 return result; |
0 | 3753 JVM_END |
3754 | |
3755 | |
3756 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3757 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3758 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3759 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3760 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3761 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3762 return result; |
0 | 3763 JVM_END |
3764 | |
3765 | |
3766 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3767 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3768 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3769 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3770 jint result = os::get_sock_name(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3771 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3772 return result; |
0 | 3773 JVM_END |
3774 | |
3775 | |
3776 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3777 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3778 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3779 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3780 JVM_END |
3781 | |
3782 | |
3783 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3784 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3785 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3786 return os::socket_available(fd, pbytes); |
0 | 3787 JVM_END |
3788 | |
3789 | |
3790 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3791 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3792 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3793 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3794 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3795 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3796 return result; |
0 | 3797 JVM_END |
3798 | |
3799 | |
3800 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3801 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3802 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3803 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3804 JVM_END |
3805 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3806 |
0 | 3807 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3808 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3809 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3810 JVM_END |
0 | 3811 |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
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|
3812 |
0 | 3813 // Library support /////////////////////////////////////////////////////////////////////////// |
3814 | |
3815 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3816 //%note jvm_ct | |
3817 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3818 char ebuf[1024]; | |
3819 void *load_result; | |
3820 { | |
3821 ThreadToNativeFromVM ttnfvm(thread); | |
1980
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ikrylov
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diff
changeset
|
3822 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3823 } |
3824 if (load_result == NULL) { | |
3825 char msg[1024]; | |
3826 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3827 // Since 'ebuf' may contain a string encoded using | |
3828 // platform encoding scheme, we need to pass | |
3829 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3830 // as the last argument. See bug 6367357. | |
3831 Handle h_exception = | |
3832 Exceptions::new_exception(thread, | |
3833 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3834 msg, Exceptions::unsafe_to_utf8); | |
3835 | |
3836 THROW_HANDLE_0(h_exception); | |
3837 } | |
3838 return load_result; | |
3839 JVM_END | |
3840 | |
3841 | |
3842 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3843 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
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ikrylov
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diff
changeset
|
3844 os::dll_unload(handle); |
0 | 3845 JVM_END |
3846 | |
3847 | |
3848 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3849 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3850 return os::dll_lookup(handle, name); |
0 | 3851 JVM_END |
3852 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
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|
3853 |
0 | 3854 // Floating point support //////////////////////////////////////////////////////////////////// |
3855 | |
3856 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3857 JVMWrapper("JVM_IsNaN"); | |
3858 return g_isnan(a); | |
3859 JVM_END | |
3860 | |
3861 | |
3862 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3863 | |
3864 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3865 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3866 return Threads::is_supported_jni_version_including_1_1(version); | |
3867 JVM_END | |
3868 | |
3869 | |
3870 // String support /////////////////////////////////////////////////////////////////////////// | |
3871 | |
3872 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3873 JVMWrapper("JVM_InternString"); | |
3874 JvmtiVMObjectAllocEventCollector oam; | |
3875 if (str == NULL) return NULL; | |
3876 oop string = JNIHandles::resolve_non_null(str); | |
3877 oop result = StringTable::intern(string, CHECK_NULL); | |
3878 return (jstring) JNIHandles::make_local(env, result); | |
3879 JVM_END | |
3880 | |
3881 | |
3882 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3883 | |
3884 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3885 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3886 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3887 // that only works with java threads. | |
3888 | |
3889 | |
3890 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3891 VM_Exit::block_if_vm_exited(); | |
3892 JVMWrapper("JVM_RawMonitorCreate"); | |
3893 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3894 } | |
3895 | |
3896 | |
3897 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3898 VM_Exit::block_if_vm_exited(); | |
3899 JVMWrapper("JVM_RawMonitorDestroy"); | |
3900 delete ((Mutex*) mon); | |
3901 } | |
3902 | |
3903 | |
3904 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3905 VM_Exit::block_if_vm_exited(); | |
3906 JVMWrapper("JVM_RawMonitorEnter"); | |
3907 ((Mutex*) mon)->jvm_raw_lock(); | |
3908 return 0; | |
3909 } | |
3910 | |
3911 | |
3912 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3913 VM_Exit::block_if_vm_exited(); | |
3914 JVMWrapper("JVM_RawMonitorExit"); | |
3915 ((Mutex*) mon)->jvm_raw_unlock(); | |
3916 } | |
3917 | |
3918 | |
3919 // Support for Serialization | |
3920 | |
3921 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3922 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3923 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3924 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3925 | |
3926 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3927 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3928 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3929 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3930 | |
3931 | |
3932 void initialize_converter_functions() { | |
3933 if (JDK_Version::is_gte_jdk14x_version()) { | |
3934 // These functions only exist for compatibility with 1.3.1 and earlier | |
3935 return; | |
3936 } | |
3937 | |
3938 // called from universe_post_init() | |
3939 assert( | |
3940 int_bits_to_float_fn == NULL && | |
3941 long_bits_to_double_fn == NULL && | |
3942 float_to_int_bits_fn == NULL && | |
3943 double_to_long_bits_fn == NULL , | |
3944 "initialization done twice" | |
3945 ); | |
3946 // initialize | |
3947 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3948 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3949 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3950 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3951 // verify | |
3952 assert( | |
3953 int_bits_to_float_fn != NULL && | |
3954 long_bits_to_double_fn != NULL && | |
3955 float_to_int_bits_fn != NULL && | |
3956 double_to_long_bits_fn != NULL , | |
3957 "initialization failed" | |
3958 ); | |
3959 } | |
3960 | |
3961 | |
3962 | |
3963 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3964 | |
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3965 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 3966 // Security Note: |
3967 // The Java level wrapper will perform the necessary security check allowing | |
3968 // us to pass the NULL as the initiating class loader. | |
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3969 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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3970 |
0 | 3971 KlassHandle klass_handle(THREAD, klass); |
3972 // Check if we should initialize the class | |
3973 if (init && klass_handle->oop_is_instance()) { | |
3974 klass_handle->initialize(CHECK_NULL); | |
3975 } | |
3976 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3977 } | |
3978 | |
3979 | |
3980 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
3981 | |
3982 #ifndef PRODUCT | |
3983 | |
3984 extern "C" { | |
3985 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
3986 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
3987 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
3988 } | |
3989 | |
3990 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
3991 JVMWrapper("JVM_AccessBoolVMFlag"); | |
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3992 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 3993 JVM_END |
3994 | |
3995 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
3996 JVMWrapper("JVM_AccessVMIntFlag"); | |
3997 intx v; | |
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3998 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 3999 *value = (jint)v; |
4000 return result; | |
4001 JVM_END | |
4002 | |
4003 | |
4004 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4005 JVMWrapper("JVM_VMBreakPoint"); | |
4006 oop the_obj = JNIHandles::resolve(obj); | |
4007 BREAKPOINT; | |
4008 JVM_END | |
4009 | |
4010 | |
4011 #endif | |
4012 | |
4013 | |
4014 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4015 | |
4016 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4017 JVMWrapper("JVM_InvokeMethod"); | |
4018 Handle method_handle; | |
4019 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4020 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4021 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4022 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4023 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4024 jobject res = JNIHandles::make_local(env, result); | |
4025 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4026 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4027 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4028 if (java_lang_Class::is_primitive(ret_type)) { | |
4029 // Only for primitive type vm allocates memory for java object. | |
4030 // See box() method. | |
4031 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4032 } | |
4033 } | |
4034 return res; | |
4035 } else { | |
4036 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4037 } | |
4038 JVM_END | |
4039 | |
4040 | |
4041 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4042 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4043 oop constructor_mirror = JNIHandles::resolve(c); | |
4044 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4045 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4046 jobject res = JNIHandles::make_local(env, result); | |
4047 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4048 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4049 } | |
4050 return res; | |
4051 JVM_END | |
4052 | |
4053 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4054 | |
4055 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4056 JVMWrapper("JVM_SupportsCX8"); | |
4057 return VM_Version::supports_cx8(); | |
4058 JVM_END | |
4059 | |
4060 | |
4061 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4062 JVMWrapper("JVM_CX8Field"); | |
4063 jlong res; | |
4064 oop o = JNIHandles::resolve(obj); | |
4065 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4066 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4067 | |
4068 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4069 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4070 | |
4071 return res == oldVal; | |
4072 JVM_END | |
4073 | |
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4074 // DTrace /////////////////////////////////////////////////////////////////// |
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4075 |
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4076 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4077 JVMWrapper("JVM_DTraceGetVersion"); |
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4078 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4079 JVM_END |
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4080 |
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4081 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4082 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4083 JVM_DTraceProvider* providers)) |
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4084 JVMWrapper("JVM_DTraceActivate"); |
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4085 return DTraceJSDT::activate( |
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4086 version, module_name, providers_count, providers, CHECK_0); |
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4087 JVM_END |
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4088 |
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4089 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4090 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4091 return DTraceJSDT::is_probe_enabled(method); |
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4092 JVM_END |
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4093 |
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4094 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4095 JVMWrapper("JVM_DTraceDispose"); |
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4096 DTraceJSDT::dispose(handle); |
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4097 JVM_END |
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4098 |
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4099 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4100 JVMWrapper("JVM_DTraceIsSupported"); |
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4101 return DTraceJSDT::is_supported(); |
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4102 JVM_END |
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4103 |
0 | 4104 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4105 // jvmti agent threads, and JNI attaching threads are skipped) | |
4106 // See CR 6404306 regarding JNI attaching threads | |
4107 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4108 ResourceMark rm(THREAD); | |
4109 ThreadsListEnumerator tle(THREAD, false, false); | |
4110 JvmtiVMObjectAllocEventCollector oam; | |
4111 | |
4112 int num_threads = tle.num_threads(); | |
1142 | 4113 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4114 objArrayHandle threads_ah(THREAD, r); |
4115 | |
4116 for (int i = 0; i < num_threads; i++) { | |
4117 Handle h = tle.get_threadObj(i); | |
4118 threads_ah->obj_at_put(i, h()); | |
4119 } | |
4120 | |
4121 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4122 JVM_END | |
4123 | |
4124 | |
4125 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4126 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4127 // the corresponding entry in the given threads array | |
4128 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4129 JVMWrapper("JVM_DumpThreads"); | |
4130 JvmtiVMObjectAllocEventCollector oam; | |
4131 | |
4132 // Check if threads is null | |
4133 if (threads == NULL) { | |
4134 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4135 } | |
4136 | |
4137 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4138 objArrayHandle ah(THREAD, a); | |
4139 int num_threads = ah->length(); | |
4140 // check if threads is non-empty array | |
4141 if (num_threads == 0) { | |
4142 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4143 } | |
4144 | |
4145 // check if threads is not an array of objects of Thread class | |
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4146 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4147 if (k != SystemDictionary::Thread_klass()) { |
0 | 4148 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4149 } | |
4150 | |
4151 ResourceMark rm(THREAD); | |
4152 | |
4153 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4154 for (int i = 0; i < num_threads; i++) { | |
4155 oop thread_obj = ah->obj_at(i); | |
4156 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4157 thread_handle_array->append(h); | |
4158 } | |
4159 | |
4160 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4161 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4162 | |
4163 JVM_END | |
4164 | |
4165 // JVM monitoring and management support | |
4166 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4167 return Management::get_jmm_interface(version); | |
4168 JVM_END | |
4169 | |
4170 // com.sun.tools.attach.VirtualMachine agent properties support | |
4171 // | |
4172 // Initialize the agent properties with the properties maintained in the VM | |
4173 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4174 JVMWrapper("JVM_InitAgentProperties"); | |
4175 ResourceMark rm; | |
4176 | |
4177 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4178 | |
4179 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4180 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4181 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4182 return properties; | |
4183 JVM_END | |
4184 | |
4185 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4186 { | |
4187 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4188 JvmtiVMObjectAllocEventCollector oam; | |
4189 | |
4190 if (ofClass == NULL) { | |
4191 return NULL; | |
4192 } | |
4193 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4194 // Special handling for primitive objects | |
4195 if (java_lang_Class::is_primitive(mirror())) { | |
4196 return NULL; | |
4197 } | |
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4198 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4199 if (!k->oop_is_instance()) { |
0 | 4200 return NULL; |
4201 } | |
4202 instanceKlassHandle ik_h(THREAD, k); | |
4203 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4204 if (encl_method_class_idx == 0) { | |
4205 return NULL; | |
4206 } | |
1142 | 4207 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4208 objArrayHandle dest(THREAD, dest_o); |
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4209 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4210 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4211 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4212 if (encl_method_method_idx != 0) { | |
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4213 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4214 extract_low_short_from_int( |
4215 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4216 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4217 dest->obj_at_put(1, str()); | |
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4218 sym = ik_h->constants()->symbol_at( |
0 | 4219 extract_high_short_from_int( |
4220 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4221 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4222 dest->obj_at_put(2, str()); | |
4223 } | |
4224 return (jobjectArray) JNIHandles::make_local(dest()); | |
4225 } | |
4226 JVM_END | |
4227 | |
4228 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4229 jint javaThreadState)) | |
4230 { | |
4231 // If new thread states are added in future JDK and VM versions, | |
4232 // this should check if the JDK version is compatible with thread | |
4233 // states supported by the VM. Return NULL if not compatible. | |
4234 // | |
4235 // This function must map the VM java_lang_Thread::ThreadStatus | |
4236 // to the Java thread state that the JDK supports. | |
4237 // | |
4238 | |
4239 typeArrayHandle values_h; | |
4240 switch (javaThreadState) { | |
4241 case JAVA_THREAD_STATE_NEW : { | |
4242 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4243 values_h = typeArrayHandle(THREAD, r); | |
4244 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4245 break; | |
4246 } | |
4247 case JAVA_THREAD_STATE_RUNNABLE : { | |
4248 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4249 values_h = typeArrayHandle(THREAD, r); | |
4250 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4251 break; | |
4252 } | |
4253 case JAVA_THREAD_STATE_BLOCKED : { | |
4254 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4255 values_h = typeArrayHandle(THREAD, r); | |
4256 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4257 break; | |
4258 } | |
4259 case JAVA_THREAD_STATE_WAITING : { | |
4260 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4261 values_h = typeArrayHandle(THREAD, r); | |
4262 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4263 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4264 break; | |
4265 } | |
4266 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4267 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4268 values_h = typeArrayHandle(THREAD, r); | |
4269 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4270 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4271 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4272 break; | |
4273 } | |
4274 case JAVA_THREAD_STATE_TERMINATED : { | |
4275 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4276 values_h = typeArrayHandle(THREAD, r); | |
4277 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4278 break; | |
4279 } | |
4280 default: | |
4281 // Unknown state - probably incompatible JDK version | |
4282 return NULL; | |
4283 } | |
4284 | |
4285 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4286 } | |
4287 JVM_END | |
4288 | |
4289 | |
4290 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4291 jint javaThreadState, | |
4292 jintArray values)) | |
4293 { | |
4294 // If new thread states are added in future JDK and VM versions, | |
4295 // this should check if the JDK version is compatible with thread | |
4296 // states supported by the VM. Return NULL if not compatible. | |
4297 // | |
4298 // This function must map the VM java_lang_Thread::ThreadStatus | |
4299 // to the Java thread state that the JDK supports. | |
4300 // | |
4301 | |
4302 ResourceMark rm; | |
4303 | |
4304 // Check if threads is null | |
4305 if (values == NULL) { | |
4306 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4307 } | |
4308 | |
4309 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4310 typeArrayHandle values_h(THREAD, v); | |
4311 | |
4312 objArrayHandle names_h; | |
4313 switch (javaThreadState) { | |
4314 case JAVA_THREAD_STATE_NEW : { | |
4315 assert(values_h->length() == 1 && | |
4316 values_h->int_at(0) == java_lang_Thread::NEW, | |
4317 "Invalid threadStatus value"); | |
4318 | |
1142 | 4319 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4320 1, /* only 1 substate */ |
4321 CHECK_NULL); | |
4322 names_h = objArrayHandle(THREAD, r); | |
4323 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4324 names_h->obj_at_put(0, name()); | |
4325 break; | |
4326 } | |
4327 case JAVA_THREAD_STATE_RUNNABLE : { | |
4328 assert(values_h->length() == 1 && | |
4329 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4330 "Invalid threadStatus value"); | |
4331 | |
1142 | 4332 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4333 1, /* only 1 substate */ |
4334 CHECK_NULL); | |
4335 names_h = objArrayHandle(THREAD, r); | |
4336 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4337 names_h->obj_at_put(0, name()); | |
4338 break; | |
4339 } | |
4340 case JAVA_THREAD_STATE_BLOCKED : { | |
4341 assert(values_h->length() == 1 && | |
4342 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4343 "Invalid threadStatus value"); | |
4344 | |
1142 | 4345 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4346 1, /* only 1 substate */ |
4347 CHECK_NULL); | |
4348 names_h = objArrayHandle(THREAD, r); | |
4349 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4350 names_h->obj_at_put(0, name()); | |
4351 break; | |
4352 } | |
4353 case JAVA_THREAD_STATE_WAITING : { | |
4354 assert(values_h->length() == 2 && | |
4355 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4356 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4357 "Invalid threadStatus value"); | |
1142 | 4358 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4359 2, /* number of substates */ |
4360 CHECK_NULL); | |
4361 names_h = objArrayHandle(THREAD, r); | |
4362 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4363 CHECK_NULL); | |
4364 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4365 CHECK_NULL); | |
4366 names_h->obj_at_put(0, name0()); | |
4367 names_h->obj_at_put(1, name1()); | |
4368 break; | |
4369 } | |
4370 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4371 assert(values_h->length() == 3 && | |
4372 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4373 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4374 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4375 "Invalid threadStatus value"); | |
1142 | 4376 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4377 3, /* number of substates */ |
4378 CHECK_NULL); | |
4379 names_h = objArrayHandle(THREAD, r); | |
4380 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4381 CHECK_NULL); | |
4382 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4383 CHECK_NULL); | |
4384 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4385 CHECK_NULL); | |
4386 names_h->obj_at_put(0, name0()); | |
4387 names_h->obj_at_put(1, name1()); | |
4388 names_h->obj_at_put(2, name2()); | |
4389 break; | |
4390 } | |
4391 case JAVA_THREAD_STATE_TERMINATED : { | |
4392 assert(values_h->length() == 1 && | |
4393 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4394 "Invalid threadStatus value"); | |
1142 | 4395 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4396 1, /* only 1 substate */ |
4397 CHECK_NULL); | |
4398 names_h = objArrayHandle(THREAD, r); | |
4399 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4400 names_h->obj_at_put(0, name()); | |
4401 break; | |
4402 } | |
4403 default: | |
4404 // Unknown state - probably incompatible JDK version | |
4405 return NULL; | |
4406 } | |
4407 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4408 } | |
4409 JVM_END | |
4410 | |
4411 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4412 { | |
4413 memset(info, 0, sizeof(info_size)); | |
4414 | |
4415 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4416 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4417 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4418 | |
4419 // when we add a new capability in the jvm_version_info struct, we should also | |
4420 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4421 // counter defined in runtimeService.cpp. | |
4422 info->is_attachable = AttachListener::is_attach_supported(); | |
4423 } | |
4424 JVM_END |