Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 6024:973046802b6f
7162955: Attach api on Solaris, too many open files
Summary: Release server-side socket after client receives it.
Reviewed-by: sla, dsamersoff, dcubed, acorn
Contributed-by: dean.long@oracle.com
author | dlong |
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date | Thu, 26 Apr 2012 16:24:15 -0400 |
parents | f7c4174b33ba |
children | 3f1ab0c19c30 8150fa46d2ed |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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" | |
33 #include "memory/oopFactory.hpp" | |
34 #include "memory/universe.inline.hpp" | |
3938 | 35 #include "oops/fieldStreams.hpp" |
1972 | 36 #include "oops/instanceKlass.hpp" |
37 #include "oops/objArrayKlass.hpp" | |
38 #include "prims/jvm.h" | |
39 #include "prims/jvm_misc.hpp" | |
40 #include "prims/jvmtiExport.hpp" | |
41 #include "prims/jvmtiThreadState.hpp" | |
42 #include "prims/nativeLookup.hpp" | |
43 #include "prims/privilegedStack.hpp" | |
44 #include "runtime/arguments.hpp" | |
45 #include "runtime/dtraceJSDT.hpp" | |
46 #include "runtime/handles.inline.hpp" | |
47 #include "runtime/init.hpp" | |
48 #include "runtime/interfaceSupport.hpp" | |
49 #include "runtime/java.hpp" | |
50 #include "runtime/javaCalls.hpp" | |
51 #include "runtime/jfieldIDWorkaround.hpp" | |
52 #include "runtime/os.hpp" | |
53 #include "runtime/perfData.hpp" | |
54 #include "runtime/reflection.hpp" | |
55 #include "runtime/vframe.hpp" | |
56 #include "runtime/vm_operations.hpp" | |
57 #include "services/attachListener.hpp" | |
58 #include "services/management.hpp" | |
59 #include "services/threadService.hpp" | |
60 #include "utilities/copy.hpp" | |
61 #include "utilities/defaultStream.hpp" | |
62 #include "utilities/dtrace.hpp" | |
63 #include "utilities/events.hpp" | |
64 #include "utilities/histogram.hpp" | |
65 #include "utilities/top.hpp" | |
66 #include "utilities/utf8.hpp" | |
67 #ifdef TARGET_OS_FAMILY_linux | |
68 # include "jvm_linux.h" | |
69 #endif | |
70 #ifdef TARGET_OS_FAMILY_solaris | |
71 # include "jvm_solaris.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_windows | |
74 # include "jvm_windows.h" | |
75 #endif | |
3960 | 76 #ifdef TARGET_OS_FAMILY_bsd |
77 # include "jvm_bsd.h" | |
78 #endif | |
1972 | 79 |
0 | 80 #include <errno.h> |
81 | |
4006 | 82 #ifndef USDT2 |
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83 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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84 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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85 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 86 #endif /* !USDT2 */ |
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87 |
0 | 88 /* |
89 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
90 such ctors and calls MUST NOT come between an oop declaration/init and its | |
91 usage because if objects are move this may cause various memory stomps, bus | |
92 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
93 failures": | |
94 | |
95 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
96 JVMWrapper("JVM_GetClassDeclaredFields"); | |
97 | |
98 // Object address to be held directly in mirror & not visible to GC | |
99 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
100 | |
101 // If this ctor can hit a safepoint, moving objects around, then | |
102 ComplexConstructor foo; | |
103 | |
104 // Boom! mirror may point to JUNK instead of the intended object | |
105 (some dereference of mirror) | |
106 | |
107 // Here's another call that may block for GC, making mirror stale | |
108 MutexLocker ml(some_lock); | |
109 | |
110 // And here's an initializer that can result in a stale oop | |
111 // all in one step. | |
112 oop o = call_that_can_throw_exception(TRAPS); | |
113 | |
114 | |
115 The solution is to keep the oop declaration BELOW the ctor or function | |
116 call that might cause a GC, do another resolve to reassign the oop, or | |
117 consider use of a Handle instead of an oop so there is immunity from object | |
118 motion. But note that the "QUICK" entries below do not have a handlemark | |
119 and thus can only support use of handles passed in. | |
120 */ | |
121 | |
122 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
123 ResourceMark rm; | |
124 int line_number = -1; | |
125 const char * source_file = NULL; | |
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126 const char * trace = "explicit"; |
0 | 127 klassOop caller = NULL; |
128 JavaThread* jthread = JavaThread::current(); | |
129 if (jthread->has_last_Java_frame()) { | |
130 vframeStream vfst(jthread); | |
131 | |
132 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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133 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
0 | 134 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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135 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
0 | 136 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
137 | |
138 methodOop last_caller = NULL; | |
139 | |
140 while (!vfst.at_end()) { | |
141 methodOop m = vfst.method(); | |
1142 | 142 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
0 | 143 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
144 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
145 break; | |
146 } | |
147 last_caller = m; | |
148 vfst.next(); | |
149 } | |
150 // if this is called from Class.forName0 and that is called from Class.forName, | |
151 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
152 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
153 bool found_it = false; | |
154 if (!vfst.at_end() && | |
155 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
156 vfst.method()->name() == vmSymbols::forName0_name()) { | |
157 vfst.next(); | |
158 if (!vfst.at_end() && | |
159 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
160 vfst.method()->name() == vmSymbols::forName_name()) { | |
161 vfst.next(); | |
162 found_it = true; | |
163 } | |
164 } else if (last_caller != NULL && | |
165 instanceKlass::cast(last_caller->method_holder())->name() == | |
166 vmSymbols::java_lang_ClassLoader() && | |
167 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
168 last_caller->name() == vmSymbols::loadClass_name())) { | |
169 found_it = true; | |
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170 } else if (!vfst.at_end()) { |
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171 if (vfst.method()->is_native()) { |
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172 // JNI call |
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173 found_it = true; |
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174 } |
0 | 175 } |
176 if (found_it && !vfst.at_end()) { | |
177 // found the caller | |
178 caller = vfst.method()->method_holder(); | |
179 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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180 if (line_number == -1) { |
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181 // show method name if it's a native method |
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182 trace = vfst.method()->name_and_sig_as_C_string(); |
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183 } |
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184 Symbol* s = instanceKlass::cast(caller)->source_file_name(); |
0 | 185 if (s != NULL) { |
186 source_file = s->as_C_string(); | |
187 } | |
188 } | |
189 } | |
190 if (caller != NULL) { | |
191 if (to_class != caller) { | |
192 const char * from = Klass::cast(caller)->external_name(); | |
193 const char * to = Klass::cast(to_class)->external_name(); | |
194 // print in a single call to reduce interleaving between threads | |
195 if (source_file != NULL) { | |
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196 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 197 } else { |
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198 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 199 } |
200 } | |
201 } | |
202 } | |
203 | |
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204 void trace_class_resolution(klassOop to_class) { |
0 | 205 EXCEPTION_MARK; |
206 trace_class_resolution_impl(to_class, THREAD); | |
207 if (HAS_PENDING_EXCEPTION) { | |
208 CLEAR_PENDING_EXCEPTION; | |
209 } | |
210 } | |
211 | |
212 // Wrapper to trace JVM functions | |
213 | |
214 #ifdef ASSERT | |
215 class JVMTraceWrapper : public StackObj { | |
216 public: | |
217 JVMTraceWrapper(const char* format, ...) { | |
218 if (TraceJVMCalls) { | |
219 va_list ap; | |
220 va_start(ap, format); | |
221 tty->print("JVM "); | |
222 tty->vprint_cr(format, ap); | |
223 va_end(ap); | |
224 } | |
225 } | |
226 }; | |
227 | |
228 Histogram* JVMHistogram; | |
229 volatile jint JVMHistogram_lock = 0; | |
230 | |
231 class JVMHistogramElement : public HistogramElement { | |
232 public: | |
233 JVMHistogramElement(const char* name); | |
234 }; | |
235 | |
236 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
237 _name = elementName; | |
238 uintx count = 0; | |
239 | |
240 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
241 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
242 count +=1; | |
243 if ( (WarnOnStalledSpinLock > 0) | |
244 && (count % WarnOnStalledSpinLock == 0)) { | |
245 warning("JVMHistogram_lock seems to be stalled"); | |
246 } | |
247 } | |
248 } | |
249 | |
250 if(JVMHistogram == NULL) | |
251 JVMHistogram = new Histogram("JVM Call Counts",100); | |
252 | |
253 JVMHistogram->add_element(this); | |
254 Atomic::dec(&JVMHistogram_lock); | |
255 } | |
256 | |
257 #define JVMCountWrapper(arg) \ | |
258 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
259 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
260 | |
261 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
262 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
263 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
264 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
265 #else | |
266 #define JVMWrapper(arg1) | |
267 #define JVMWrapper2(arg1, arg2) | |
268 #define JVMWrapper3(arg1, arg2, arg3) | |
269 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
270 #endif | |
271 | |
272 | |
273 // Interface version ///////////////////////////////////////////////////////////////////// | |
274 | |
275 | |
276 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
277 return JVM_INTERFACE_VERSION; | |
278 JVM_END | |
279 | |
280 | |
281 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
282 | |
283 | |
284 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
285 JVMWrapper("JVM_CurrentTimeMillis"); | |
286 return os::javaTimeMillis(); | |
287 JVM_END | |
288 | |
289 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
290 JVMWrapper("JVM_NanoTime"); | |
291 return os::javaTimeNanos(); | |
292 JVM_END | |
293 | |
294 | |
295 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
296 jobject dst, jint dst_pos, jint length)) | |
297 JVMWrapper("JVM_ArrayCopy"); | |
298 // Check if we have null pointers | |
299 if (src == NULL || dst == NULL) { | |
300 THROW(vmSymbols::java_lang_NullPointerException()); | |
301 } | |
302 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
303 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
304 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
305 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
306 // Do copy | |
307 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
308 JVM_END | |
309 | |
310 | |
311 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
312 JavaValue r(T_OBJECT); | |
313 // public synchronized Object put(Object key, Object value); | |
314 HandleMark hm(THREAD); | |
315 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
316 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
317 JavaCalls::call_virtual(&r, | |
318 props, | |
1142 | 319 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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320 vmSymbols::put_name(), |
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321 vmSymbols::object_object_object_signature(), |
0 | 322 key_str, |
323 value_str, | |
324 THREAD); | |
325 } | |
326 | |
327 | |
328 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
329 | |
330 | |
331 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
332 JVMWrapper("JVM_InitProperties"); | |
333 ResourceMark rm; | |
334 | |
335 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
336 | |
337 // System property list includes both user set via -D option and | |
338 // jvm system specific properties. | |
339 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
340 PUTPROP(props, p->key(), p->value()); | |
341 } | |
342 | |
343 // Convert the -XX:MaxDirectMemorySize= command line flag | |
344 // to the sun.nio.MaxDirectMemorySize property. | |
345 // Do this after setting user properties to prevent people | |
346 // from setting the value with a -D option, as requested. | |
347 { | |
348 char as_chars[256]; | |
349 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
350 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
351 } | |
352 | |
353 // JVM monitoring and management support | |
354 // Add the sun.management.compiler property for the compiler's name | |
355 { | |
356 #undef CSIZE | |
357 #if defined(_LP64) || defined(_WIN64) | |
358 #define CSIZE "64-Bit " | |
359 #else | |
360 #define CSIZE | |
361 #endif // 64bit | |
362 | |
363 #ifdef TIERED | |
364 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
365 #else | |
366 #if defined(COMPILER1) | |
367 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
368 #elif defined(COMPILER2) | |
369 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
370 #else | |
371 const char* compiler_name = ""; | |
372 #endif // compilers | |
373 #endif // TIERED | |
374 | |
375 if (*compiler_name != '\0' && | |
376 (Arguments::mode() != Arguments::_int)) { | |
377 PUTPROP(props, "sun.management.compiler", compiler_name); | |
378 } | |
379 } | |
380 | |
381 return properties; | |
382 JVM_END | |
383 | |
384 | |
385 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
386 | |
387 extern volatile jint vm_created; | |
388 | |
389 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
390 if (vm_created != 0 && (code == 0)) { | |
391 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
392 Universe::run_finalizers_on_exit(); | |
393 } | |
394 before_exit(thread); | |
395 vm_exit(code); | |
396 JVM_END | |
397 | |
398 | |
399 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
400 before_exit(thread); | |
401 vm_exit(code); | |
402 JVM_END | |
403 | |
404 | |
405 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
406 register_on_exit_function(func); | |
407 JVM_END | |
408 | |
409 | |
410 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
411 JVMWrapper("JVM_GC"); | |
412 if (!DisableExplicitGC) { | |
413 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
414 } | |
415 JVM_END | |
416 | |
417 | |
418 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
419 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
420 return Universe::heap()->millis_since_last_gc(); | |
421 JVM_END | |
422 | |
423 | |
424 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
425 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
426 JVM_END | |
427 | |
428 | |
429 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
430 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
431 JVM_END | |
432 | |
433 static inline jlong convert_size_t_to_jlong(size_t val) { | |
434 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
435 NOT_LP64 (return (jlong)val;) | |
436 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
437 } | |
438 | |
439 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
440 JVMWrapper("JVM_TotalMemory"); | |
441 size_t n = Universe::heap()->capacity(); | |
442 return convert_size_t_to_jlong(n); | |
443 JVM_END | |
444 | |
445 | |
446 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
447 JVMWrapper("JVM_FreeMemory"); | |
448 CollectedHeap* ch = Universe::heap(); | |
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449 size_t n; |
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450 { |
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451 MutexLocker x(Heap_lock); |
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452 n = ch->capacity() - ch->used(); |
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453 } |
0 | 454 return convert_size_t_to_jlong(n); |
455 JVM_END | |
456 | |
457 | |
458 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
459 JVMWrapper("JVM_MaxMemory"); | |
460 size_t n = Universe::heap()->max_capacity(); | |
461 return convert_size_t_to_jlong(n); | |
462 JVM_END | |
463 | |
464 | |
465 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
466 JVMWrapper("JVM_ActiveProcessorCount"); | |
467 return os::active_processor_count(); | |
468 JVM_END | |
469 | |
470 | |
471 | |
472 // java.lang.Throwable ////////////////////////////////////////////////////// | |
473 | |
474 | |
475 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
476 JVMWrapper("JVM_FillInStackTrace"); | |
477 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
478 java_lang_Throwable::fill_in_stack_trace(exception); | |
479 JVM_END | |
480 | |
481 | |
482 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
483 JVMWrapper("JVM_PrintStackTrace"); | |
484 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
485 oop exception = JNIHandles::resolve_non_null(receiver); | |
486 oop stream = JNIHandles::resolve_non_null(printable); | |
487 java_lang_Throwable::print_stack_trace(exception, stream); | |
488 JVM_END | |
489 | |
490 | |
491 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
492 JVMWrapper("JVM_GetStackTraceDepth"); | |
493 oop exception = JNIHandles::resolve(throwable); | |
494 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
495 JVM_END | |
496 | |
497 | |
498 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
499 JVMWrapper("JVM_GetStackTraceElement"); | |
500 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
501 oop exception = JNIHandles::resolve(throwable); | |
502 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
503 return JNIHandles::make_local(env, element); | |
504 JVM_END | |
505 | |
506 | |
507 // java.lang.Object /////////////////////////////////////////////// | |
508 | |
509 | |
510 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
511 JVMWrapper("JVM_IHashCode"); | |
512 // as implemented in the classic virtual machine; return 0 if object is NULL | |
513 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
514 JVM_END | |
515 | |
516 | |
517 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
518 JVMWrapper("JVM_MonitorWait"); | |
519 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
520 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
521 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
522 if (JvmtiExport::should_post_monitor_wait()) { | |
523 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
524 } | |
525 ObjectSynchronizer::wait(obj, ms, CHECK); | |
526 JVM_END | |
527 | |
528 | |
529 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
530 JVMWrapper("JVM_MonitorNotify"); | |
531 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
532 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
533 ObjectSynchronizer::notify(obj, CHECK); | |
534 JVM_END | |
535 | |
536 | |
537 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
538 JVMWrapper("JVM_MonitorNotifyAll"); | |
539 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
540 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
541 ObjectSynchronizer::notifyall(obj, CHECK); | |
542 JVM_END | |
543 | |
544 | |
545 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
546 JVMWrapper("JVM_Clone"); | |
547 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
548 const KlassHandle klass (THREAD, obj->klass()); | |
549 JvmtiVMObjectAllocEventCollector oam; | |
550 | |
551 #ifdef ASSERT | |
552 // Just checking that the cloneable flag is set correct | |
553 if (obj->is_javaArray()) { | |
554 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
555 } else { | |
556 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 557 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 558 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
559 } | |
560 #endif | |
561 | |
562 // Check if class of obj supports the Cloneable interface. | |
563 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
564 if (!klass->is_cloneable()) { | |
565 ResourceMark rm(THREAD); | |
566 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
567 } | |
568 | |
569 // Make shallow object copy | |
570 const int size = obj->size(); | |
571 oop new_obj = NULL; | |
572 if (obj->is_javaArray()) { | |
573 const int length = ((arrayOop)obj())->length(); | |
574 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
575 } else { | |
576 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
577 } | |
578 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
579 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
580 // be suspended in the middle of copying the pointer and end up with parts | |
581 // of two different pointers in the field. Subsequent dereferences will crash. | |
582 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
583 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
584 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
585 // The same is true of StubRoutines::object_copy and the various oop_copy | |
586 // variants, and of the code generated by the inline_native_clone intrinsic. | |
587 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
588 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
589 (size_t)align_object_size(size) / HeapWordsPerLong); | |
590 // Clear the header | |
591 new_obj->init_mark(); | |
592 | |
593 // Store check (mark entire object and let gc sort it out) | |
594 BarrierSet* bs = Universe::heap()->barrier_set(); | |
595 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
596 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
597 | |
598 // Caution: this involves a java upcall, so the clone should be | |
599 // "gc-robust" by this stage. | |
600 if (klass->has_finalizer()) { | |
601 assert(obj->is_instance(), "should be instanceOop"); | |
602 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
603 } | |
604 | |
605 return JNIHandles::make_local(env, oop(new_obj)); | |
606 JVM_END | |
607 | |
608 // java.lang.Compiler //////////////////////////////////////////////////// | |
609 | |
610 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
611 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
612 // functions are all silently ignored unless JVM warnings are printed. | |
613 | |
614 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
615 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
616 JVM_END | |
617 | |
618 | |
619 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
620 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
621 return JNI_FALSE; | |
622 JVM_END | |
623 | |
624 | |
625 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
626 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
627 return JNI_FALSE; | |
628 JVM_END | |
629 | |
630 | |
631 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
632 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
633 return JNI_FALSE; | |
634 JVM_END | |
635 | |
636 | |
637 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
638 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
639 return NULL; | |
640 JVM_END | |
641 | |
642 | |
643 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
644 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
645 JVM_END | |
646 | |
647 | |
648 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
649 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
650 JVM_END | |
651 | |
652 | |
653 | |
654 // Error message support ////////////////////////////////////////////////////// | |
655 | |
656 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
657 JVMWrapper("JVM_GetLastErrorString"); | |
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658 return (jint)os::lasterror(buf, len); |
0 | 659 JVM_END |
660 | |
661 | |
662 // java.io.File /////////////////////////////////////////////////////////////// | |
663 | |
664 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
665 JVMWrapper2("JVM_NativePath (%s)", path); | |
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666 return os::native_path(path); |
0 | 667 JVM_END |
668 | |
669 | |
670 // Misc. class handling /////////////////////////////////////////////////////////// | |
671 | |
672 | |
673 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
674 JVMWrapper("JVM_GetCallerClass"); | |
675 klassOop k = thread->security_get_caller_class(depth); | |
676 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
677 JVM_END | |
678 | |
679 | |
680 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
681 JVMWrapper("JVM_FindPrimitiveClass"); | |
682 oop mirror = NULL; | |
683 BasicType t = name2type(utf); | |
684 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
685 mirror = Universe::java_mirror(t); | |
686 } | |
687 if (mirror == NULL) { | |
688 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
689 } else { | |
690 return (jclass) JNIHandles::make_local(env, mirror); | |
691 } | |
692 JVM_END | |
693 | |
694 | |
695 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
696 JVMWrapper("JVM_ResolveClass"); | |
697 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
698 JVM_END | |
699 | |
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700 |
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701 // Returns a class loaded by the bootstrap class loader; or null |
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702 // if not found. ClassNotFoundException is not thrown. |
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703 // |
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704 // Rationale behind JVM_FindClassFromBootLoader |
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705 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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706 // b> because of (a) java.dll has a direct dependecy on the unexported |
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707 // private symbol "_JVM_FindClassFromClassLoader@20". |
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708 // c> the launcher cannot use the private symbol as it dynamically opens |
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709 // the entry point, so if something changes, the launcher will fail |
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710 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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711 // stable exported interface. |
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712 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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713 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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714 // JVM_FindClassFromClassLoader and will not be backward compatible |
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715 // with older JDKs. |
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716 // Thus a public/stable exported entry point is the right solution, |
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717 // public here means public in linker semantics, and is exported only |
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718 // to the JDK, and is not intended to be a public API. |
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719 |
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720 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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721 const char* name)) |
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722 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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723 |
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724 // Java libraries should ensure that name is never null... |
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725 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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726 // It's impossible to create this class; the name cannot fit |
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727 // into the constant pool. |
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728 return NULL; |
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729 } |
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730 |
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731 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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732 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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733 if (k == NULL) { |
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734 return NULL; |
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735 } |
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736 |
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737 if (TraceClassResolution) { |
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738 trace_class_resolution(k); |
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739 } |
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740 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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741 JVM_END |
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742 |
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743 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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744 jboolean init, jobject loader, |
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745 jboolean throwError)) |
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746 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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747 throwError ? "error" : "exception"); |
388 | 748 // Java libraries should ensure that name is never null... |
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749 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 750 // It's impossible to create this class; the name cannot fit |
751 // into the constant pool. | |
752 if (throwError) { | |
753 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
754 } else { | |
755 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
756 } | |
757 } | |
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758 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 759 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
760 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
761 Handle(), throwError, THREAD); | |
762 | |
763 if (TraceClassResolution && result != NULL) { | |
764 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
765 } | |
766 return result; | |
0 | 767 JVM_END |
768 | |
769 | |
770 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
771 jboolean init, jclass from)) | |
772 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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773 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 774 // It's impossible to create this class; the name cannot fit |
775 // into the constant pool. | |
776 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
777 } | |
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778 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 779 oop from_class_oop = JNIHandles::resolve(from); |
780 klassOop from_class = (from_class_oop == NULL) | |
781 ? (klassOop)NULL | |
782 : java_lang_Class::as_klassOop(from_class_oop); | |
783 oop class_loader = NULL; | |
784 oop protection_domain = NULL; | |
785 if (from_class != NULL) { | |
786 class_loader = Klass::cast(from_class)->class_loader(); | |
787 protection_domain = Klass::cast(from_class)->protection_domain(); | |
788 } | |
789 Handle h_loader(THREAD, class_loader); | |
790 Handle h_prot (THREAD, protection_domain); | |
791 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
792 h_prot, true, thread); | |
793 | |
794 if (TraceClassResolution && result != NULL) { | |
795 // this function is generally only used for class loading during verification. | |
796 ResourceMark rm; | |
797 oop from_mirror = JNIHandles::resolve_non_null(from); | |
798 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
799 const char * from_name = Klass::cast(from_class)->external_name(); | |
800 | |
801 oop mirror = JNIHandles::resolve_non_null(result); | |
802 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
803 const char * to = Klass::cast(to_class)->external_name(); | |
804 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
805 } | |
806 | |
807 return result; | |
808 JVM_END | |
809 | |
810 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
811 if (loader.is_null()) { | |
812 return; | |
813 } | |
814 | |
815 // check whether the current caller thread holds the lock or not. | |
816 // If not, increment the corresponding counter | |
817 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
818 ObjectSynchronizer::owner_self) { | |
819 counter->inc(); | |
820 } | |
821 } | |
822 | |
823 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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824 // and JVM_DefineClassWithSourceCond() |
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825 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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826 jobject loader, const jbyte *buf, |
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827 jsize len, jobject pd, const char *source, |
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828 jboolean verify, TRAPS) { |
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829 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 830 |
875
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831 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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832 JavaThread* jt = (JavaThread*) THREAD; |
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833 |
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834 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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835 ClassLoader::perf_define_appclass_selftime(), |
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836 ClassLoader::perf_define_appclasses(), |
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837 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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838 jt->get_thread_stat()->perf_timers_addr(), |
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839 PerfClassTraceTime::DEFINE_CLASS); |
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840 |
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841 if (UsePerfData) { |
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842 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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843 } |
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844 |
0 | 845 // Since exceptions can be thrown, class initialization can take place |
846 // if name is NULL no check for class name in .class stream has to be made. | |
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847 TempNewSymbol class_name = NULL; |
0 | 848 if (name != NULL) { |
849 const int str_len = (int)strlen(name); | |
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850 if (str_len > Symbol::max_length()) { |
0 | 851 // It's impossible to create this class; the name cannot fit |
852 // into the constant pool. | |
853 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
854 } | |
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855 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 856 } |
857 | |
858 ResourceMark rm(THREAD); | |
859 ClassFileStream st((u1*) buf, len, (char *)source); | |
860 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
861 if (UsePerfData) { | |
862 is_lock_held_by_thread(class_loader, | |
863 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
864 THREAD); | |
865 } | |
866 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
867 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
868 protection_domain, &st, | |
973
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869 verify != 0, |
0 | 870 CHECK_NULL); |
871 | |
872 if (TraceClassResolution && k != NULL) { | |
873 trace_class_resolution(k); | |
874 } | |
875 | |
876 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
877 } | |
878 | |
879 | |
880 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
881 JVMWrapper2("JVM_DefineClass %s", name); | |
882 | |
973
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883 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 884 JVM_END |
885 | |
886 | |
887 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
888 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
889 | |
973
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890 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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891 JVM_END |
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892 |
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893 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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894 jobject loader, const jbyte *buf, |
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895 jsize len, jobject pd, |
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896 const char *source, jboolean verify)) |
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897 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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898 |
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899 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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900 JVM_END |
0 | 901 |
902 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
903 JVMWrapper("JVM_FindLoadedClass"); | |
904 ResourceMark rm(THREAD); | |
905 | |
906 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
907 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
908 | |
909 const char* str = java_lang_String::as_utf8_string(string()); | |
910 // Sanity check, don't expect null | |
911 if (str == NULL) return NULL; | |
912 | |
913 const int str_len = (int)strlen(str); | |
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914 if (str_len > Symbol::max_length()) { |
0 | 915 // It's impossible to create this class; the name cannot fit |
916 // into the constant pool. | |
917 return NULL; | |
918 } | |
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919 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 920 |
921 // Security Note: | |
922 // The Java level wrapper will perform the necessary security check allowing | |
923 // us to pass the NULL as the initiating class loader. | |
924 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
925 if (UsePerfData) { | |
926 is_lock_held_by_thread(h_loader, | |
927 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
928 THREAD); | |
929 } | |
930 | |
931 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
932 h_loader, | |
933 Handle(), | |
934 CHECK_NULL); | |
935 | |
936 return (k == NULL) ? NULL : | |
937 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
938 JVM_END | |
939 | |
940 | |
941 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
942 | |
943 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
944 assert (cls != NULL, "illegal class"); | |
945 JVMWrapper("JVM_GetClassName"); | |
946 JvmtiVMObjectAllocEventCollector oam; | |
947 ResourceMark rm(THREAD); | |
948 const char* name; | |
949 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
950 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
951 } else { | |
952 // Consider caching interned string in Klass | |
953 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
954 assert(k->is_klass(), "just checking"); | |
955 name = Klass::cast(k)->external_name(); | |
956 } | |
957 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
958 return (jstring) JNIHandles::make_local(env, result); | |
959 JVM_END | |
960 | |
961 | |
962 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
963 JVMWrapper("JVM_GetClassInterfaces"); | |
964 JvmtiVMObjectAllocEventCollector oam; | |
965 oop mirror = JNIHandles::resolve_non_null(cls); | |
966 | |
967 // Special handling for primitive objects | |
968 if (java_lang_Class::is_primitive(mirror)) { | |
969 // Primitive objects does not have any interfaces | |
1142 | 970 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 971 return (jobjectArray) JNIHandles::make_local(env, r); |
972 } | |
973 | |
974 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
975 // Figure size of result array | |
976 int size; | |
977 if (klass->oop_is_instance()) { | |
978 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
979 } else { | |
980 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
981 size = 2; | |
982 } | |
983 | |
984 // Allocate result array | |
1142 | 985 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 986 objArrayHandle result (THREAD, r); |
987 // Fill in result | |
988 if (klass->oop_is_instance()) { | |
989 // Regular instance klass, fill in all local interfaces | |
990 for (int index = 0; index < size; index++) { | |
991 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
992 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
993 } | |
994 } else { | |
995 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
1142 | 996 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
997 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
0 | 998 } |
999 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1000 JVM_END | |
1001 | |
1002 | |
1003 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1004 JVMWrapper("JVM_GetClassLoader"); | |
1005 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1006 return NULL; | |
1007 } | |
1008 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1009 oop loader = Klass::cast(k)->class_loader(); | |
1010 return JNIHandles::make_local(env, loader); | |
1011 JVM_END | |
1012 | |
1013 | |
1014 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1015 JVMWrapper("JVM_IsInterface"); | |
1016 oop mirror = JNIHandles::resolve_non_null(cls); | |
1017 if (java_lang_Class::is_primitive(mirror)) { | |
1018 return JNI_FALSE; | |
1019 } | |
1020 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1021 jboolean result = Klass::cast(k)->is_interface(); | |
1022 assert(!result || Klass::cast(k)->oop_is_instance(), | |
1023 "all interfaces are instance types"); | |
1024 // The compiler intrinsic for isInterface tests the | |
1025 // Klass::_access_flags bits in the same way. | |
1026 return result; | |
1027 JVM_END | |
1028 | |
1029 | |
1030 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1031 JVMWrapper("JVM_GetClassSigners"); | |
1032 JvmtiVMObjectAllocEventCollector oam; | |
1033 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1034 // There are no signers for primitive types | |
1035 return NULL; | |
1036 } | |
1037 | |
1038 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1039 objArrayOop signers = NULL; | |
1040 if (Klass::cast(k)->oop_is_instance()) { | |
1041 signers = instanceKlass::cast(k)->signers(); | |
1042 } | |
1043 | |
1044 // If there are no signers set in the class, or if the class | |
1045 // is an array, return NULL. | |
1046 if (signers == NULL) return NULL; | |
1047 | |
1048 // copy of the signers array | |
1049 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
1050 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
1051 for (int index = 0; index < signers->length(); index++) { | |
1052 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1053 } | |
1054 | |
1055 // return the copy | |
1056 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1057 JVM_END | |
1058 | |
1059 | |
1060 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1061 JVMWrapper("JVM_SetClassSigners"); | |
1062 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1063 // This call is ignored for primitive types and arrays. | |
1064 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1065 // be called with an array. Only the bootstrap loader creates arrays. | |
1066 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1067 if (Klass::cast(k)->oop_is_instance()) { | |
1068 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
1069 } | |
1070 } | |
1071 JVM_END | |
1072 | |
1073 | |
1074 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1075 JVMWrapper("JVM_GetProtectionDomain"); | |
1076 if (JNIHandles::resolve(cls) == NULL) { | |
1077 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1078 } | |
1079 | |
1080 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1081 // Primitive types does not have a protection domain. | |
1082 return NULL; | |
1083 } | |
1084 | |
1085 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1086 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
1087 JVM_END | |
1088 | |
1089 | |
1090 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1091 // still defined in core libraries as of 1.5. | |
1092 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1093 JVMWrapper("JVM_SetProtectionDomain"); | |
1094 if (JNIHandles::resolve(cls) == NULL) { | |
1095 THROW(vmSymbols::java_lang_NullPointerException()); | |
1096 } | |
1097 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1098 // Call is ignored for primitive types | |
1099 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1100 | |
1101 // cls won't be an array, as this called only from ClassLoader.defineClass | |
1102 if (Klass::cast(k)->oop_is_instance()) { | |
1103 oop pd = JNIHandles::resolve(protection_domain); | |
1104 assert(pd == NULL || pd->is_oop(), "just checking"); | |
1105 instanceKlass::cast(k)->set_protection_domain(pd); | |
1106 } | |
1107 } | |
1108 JVM_END | |
1109 | |
1110 | |
1111 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1112 JVMWrapper("JVM_DoPrivileged"); | |
1113 | |
1114 if (action == NULL) { | |
1115 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1116 } | |
1117 | |
1118 // Stack allocated list of privileged stack elements | |
1119 PrivilegedElement pi; | |
1120 | |
1121 // Check that action object understands "Object run()" | |
1122 Handle object (THREAD, JNIHandles::resolve(action)); | |
1123 | |
1124 // get run() method | |
1125 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
1126 vmSymbols::run_method_name(), | |
1127 vmSymbols::void_object_signature()); | |
1128 methodHandle m (THREAD, m_oop); | |
1129 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
1130 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
1131 } | |
1132 | |
1133 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1134 vframeStream vfst(thread); | |
1135 vfst.security_get_caller_frame(1); | |
1136 | |
1137 if (!vfst.at_end()) { | |
1138 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1139 thread->set_privileged_stack_top(&pi); | |
1140 } | |
1141 | |
1142 | |
1143 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1144 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1145 Handle pending_exception; | |
1146 JavaValue result(T_OBJECT); | |
1147 JavaCallArguments args(object); | |
1148 JavaCalls::call(&result, m, &args, THREAD); | |
1149 | |
1150 // done with action, remove ourselves from the list | |
1151 if (!vfst.at_end()) { | |
1152 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1153 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1154 } | |
1155 | |
1156 if (HAS_PENDING_EXCEPTION) { | |
1157 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1158 CLEAR_PENDING_EXCEPTION; | |
1159 | |
1142 | 1160 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1161 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1162 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1163 JavaCallArguments args(pending_exception); | |
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1164 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1165 vmSymbols::exception_void_signature(), |
0 | 1166 &args); |
1167 } | |
1168 } | |
1169 | |
1170 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1171 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1172 JVM_END | |
1173 | |
1174 | |
1175 // Returns the inherited_access_control_context field of the running thread. | |
1176 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1177 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1178 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1179 return JNIHandles::make_local(env, result); | |
1180 JVM_END | |
1181 | |
1182 class RegisterArrayForGC { | |
1183 private: | |
1184 JavaThread *_thread; | |
1185 public: | |
1186 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1187 _thread = thread; | |
1188 _thread->register_array_for_gc(array); | |
1189 } | |
1190 | |
1191 ~RegisterArrayForGC() { | |
1192 _thread->register_array_for_gc(NULL); | |
1193 } | |
1194 }; | |
1195 | |
1196 | |
1197 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1198 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1199 if (!UsePrivilegedStack) return NULL; | |
1200 | |
1201 ResourceMark rm(THREAD); | |
1202 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1203 JvmtiVMObjectAllocEventCollector oam; | |
1204 | |
1205 // count the protection domains on the execution stack. We collapse | |
1206 // duplicate consecutive protection domains into a single one, as | |
1207 // well as stopping when we hit a privileged frame. | |
1208 | |
1209 // Use vframeStream to iterate through Java frames | |
1210 vframeStream vfst(thread); | |
1211 | |
1212 oop previous_protection_domain = NULL; | |
1213 Handle privileged_context(thread, NULL); | |
1214 bool is_privileged = false; | |
1215 oop protection_domain = NULL; | |
1216 | |
1217 for(; !vfst.at_end(); vfst.next()) { | |
1218 // get method of frame | |
1219 methodOop method = vfst.method(); | |
1220 intptr_t* frame_id = vfst.frame_id(); | |
1221 | |
1222 // check the privileged frames to see if we have a match | |
1223 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1224 // this frame is privileged | |
1225 is_privileged = true; | |
1226 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1227 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1228 } else { | |
1229 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
1230 } | |
1231 | |
1232 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1233 local_array->push(protection_domain); | |
1234 previous_protection_domain = protection_domain; | |
1235 } | |
1236 | |
1237 if (is_privileged) break; | |
1238 } | |
1239 | |
1240 | |
1241 // either all the domains on the stack were system domains, or | |
1242 // we had a privileged system domain | |
1243 if (local_array->is_empty()) { | |
1244 if (is_privileged && privileged_context.is_null()) return NULL; | |
1245 | |
1246 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1247 return JNIHandles::make_local(env, result); | |
1248 } | |
1249 | |
1250 // the resource area must be registered in case of a gc | |
1251 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1252 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1253 local_array->length(), CHECK_NULL); |
1254 objArrayHandle h_context(thread, context); | |
1255 for (int index = 0; index < local_array->length(); index++) { | |
1256 h_context->obj_at_put(index, local_array->at(index)); | |
1257 } | |
1258 | |
1259 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1260 | |
1261 return JNIHandles::make_local(env, result); | |
1262 JVM_END | |
1263 | |
1264 | |
1265 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1266 JVMWrapper("JVM_IsArrayClass"); | |
1267 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1268 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
1269 JVM_END | |
1270 | |
1271 | |
1272 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1273 JVMWrapper("JVM_IsPrimitiveClass"); | |
1274 oop mirror = JNIHandles::resolve_non_null(cls); | |
1275 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1276 JVM_END | |
1277 | |
1278 | |
1279 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1280 JVMWrapper("JVM_GetComponentType"); | |
1281 oop mirror = JNIHandles::resolve_non_null(cls); | |
1282 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1283 return (jclass) JNIHandles::make_local(env, result); | |
1284 JVM_END | |
1285 | |
1286 | |
1287 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1288 JVMWrapper("JVM_GetClassModifiers"); | |
1289 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1290 // Primitive type | |
1291 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1292 } | |
1293 | |
1294 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1295 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
1296 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1297 return k->modifier_flags(); | |
1298 JVM_END | |
1299 | |
1300 | |
1301 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1302 | |
1303 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1304 JvmtiVMObjectAllocEventCollector oam; | |
1305 // ofClass is a reference to a java_lang_Class object. The mirror object | |
1306 // of an instanceKlass | |
1307 | |
1308 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1309 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1142 | 1310 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1311 return (jobjectArray)JNIHandles::make_local(env, result); |
1312 } | |
1313 | |
1314 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
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1315 InnerClassesIterator iter(k); |
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1316 |
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1317 if (iter.length() == 0) { |
0 | 1318 // Neither an inner nor outer class |
1142 | 1319 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1320 return (jobjectArray)JNIHandles::make_local(env, result); |
1321 } | |
1322 | |
1323 // find inner class info | |
1324 constantPoolHandle cp(thread, k->constants()); | |
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1325 int length = iter.length(); |
0 | 1326 |
1327 // Allocate temp. result array | |
1142 | 1328 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1329 objArrayHandle result (THREAD, r); |
1330 int members = 0; | |
1331 | |
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1332 for (; !iter.done(); iter.next()) { |
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1333 int ioff = iter.inner_class_info_index(); |
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1334 int ooff = iter.outer_class_info_index(); |
0 | 1335 |
1336 if (ioff != 0 && ooff != 0) { | |
1337 // Check to see if the name matches the class we're looking for | |
1338 // before attempting to find the class. | |
1339 if (cp->klass_name_at_matches(k, ooff)) { | |
1340 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
1341 if (outer_klass == k()) { | |
1342 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
1343 instanceKlassHandle inner_klass (THREAD, ik); | |
1344 | |
1345 // Throws an exception if outer klass has not declared k as | |
1346 // an inner klass | |
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1347 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1348 |
1349 result->obj_at_put(members, inner_klass->java_mirror()); | |
1350 members++; | |
1351 } | |
1352 } | |
1353 } | |
1354 } | |
1355 | |
1356 if (members != length) { | |
1357 // Return array of right length | |
1142 | 1358 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1359 for(int i = 0; i < members; i++) { |
1360 res->obj_at_put(i, result->obj_at(i)); | |
1361 } | |
1362 return (jobjectArray)JNIHandles::make_local(env, res); | |
1363 } | |
1364 | |
1365 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1366 JVM_END | |
1367 | |
1368 | |
1369 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1370 { |
0 | 1371 // ofClass is a reference to a java_lang_Class object. |
1372 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1373 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1374 return NULL; | |
1375 } | |
1376 | |
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1377 bool inner_is_member = false; |
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1378 klassOop outer_klass |
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1379 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1380 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1381 if (outer_klass == NULL) return NULL; // already a top-level class |
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1382 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
665
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1383 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1384 } |
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1385 JVM_END |
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1386 |
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1387 // should be in instanceKlass.cpp, but is here for historical reasons |
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1388 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1389 bool* inner_is_member, |
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1390 TRAPS) { |
665
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1391 Thread* thread = THREAD; |
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1392 InnerClassesIterator iter(k); |
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1393 if (iter.length() == 0) { |
0 | 1394 // No inner class info => no declaring class |
1395 return NULL; | |
1396 } | |
1397 | |
1398 constantPoolHandle i_cp(thread, k->constants()); | |
1399 | |
1400 bool found = false; | |
1401 klassOop ok; | |
1402 instanceKlassHandle outer_klass; | |
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1403 *inner_is_member = false; |
0 | 1404 |
1405 // Find inner_klass attribute | |
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1406 for (; !iter.done() && !found; iter.next()) { |
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1407 int ioff = iter.inner_class_info_index(); |
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1408 int ooff = iter.outer_class_info_index(); |
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1409 int noff = iter.inner_name_index(); |
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1410 if (ioff != 0) { |
0 | 1411 // Check to see if the name matches the class we're looking for |
1412 // before attempting to find the class. | |
1413 if (i_cp->klass_name_at_matches(k, ioff)) { | |
1414 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
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1415 found = (k() == inner_klass); |
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1416 if (found && ooff != 0) { |
0 | 1417 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1418 outer_klass = instanceKlassHandle(thread, ok); | |
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1419 *inner_is_member = true; |
0 | 1420 } |
1421 } | |
1422 } | |
1423 } | |
1424 | |
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1425 if (found && outer_klass.is_null()) { |
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1426 // It may be anonymous; try for that. |
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1427 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1428 if (encl_method_class_idx != 0) { |
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1429 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1430 outer_klass = instanceKlassHandle(thread, ok); |
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1431 *inner_is_member = false; |
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1432 } |
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1433 } |
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1434 |
0 | 1435 // If no inner class attribute found for this class. |
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1436 if (outer_klass.is_null()) return NULL; |
0 | 1437 |
1438 // Throws an exception if outer klass has not declared k as an inner klass | |
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1439 // We need evidence that each klass knows about the other, or else |
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1440 // the system could allow a spoof of an inner class to gain access rights. |
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1441 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1442 return outer_klass(); |
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1443 } |
0 | 1444 |
1445 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1446 assert (cls != NULL, "illegal class"); | |
1447 JVMWrapper("JVM_GetClassSignature"); | |
1448 JvmtiVMObjectAllocEventCollector oam; | |
1449 ResourceMark rm(THREAD); | |
1450 // Return null for arrays and primatives | |
1451 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1452 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1453 if (Klass::cast(k)->oop_is_instance()) { | |
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1454 Symbol* sym = instanceKlass::cast(k)->generic_signature(); |
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1455 if (sym == NULL) return NULL; |
0 | 1456 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1457 return (jstring) JNIHandles::make_local(env, str()); | |
1458 } | |
1459 } | |
1460 return NULL; | |
1461 JVM_END | |
1462 | |
1463 | |
1464 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1465 assert (cls != NULL, "illegal class"); | |
1466 JVMWrapper("JVM_GetClassAnnotations"); | |
1467 ResourceMark rm(THREAD); | |
1468 // Return null for arrays and primitives | |
1469 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1470 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1471 if (Klass::cast(k)->oop_is_instance()) { | |
1472 return (jbyteArray) JNIHandles::make_local(env, | |
1473 instanceKlass::cast(k)->class_annotations()); | |
1474 } | |
1475 } | |
1476 return NULL; | |
1477 JVM_END | |
1478 | |
1479 | |
1480 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
1481 assert(field != NULL, "illegal field"); | |
1482 JVMWrapper("JVM_GetFieldAnnotations"); | |
1483 | |
1484 // some of this code was adapted from from jni_FromReflectedField | |
1485 | |
1486 // field is a handle to a java.lang.reflect.Field object | |
1487 oop reflected = JNIHandles::resolve_non_null(field); | |
1488 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
1489 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1490 int slot = java_lang_reflect_Field::slot(reflected); | |
1491 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1492 | |
1493 fieldDescriptor fd; | |
1494 KlassHandle kh(THREAD, k); | |
3938 | 1495 intptr_t offset = instanceKlass::cast(kh())->field_offset(slot); |
0 | 1496 |
1497 if (modifiers & JVM_ACC_STATIC) { | |
1498 // for static fields we only look in the current class | |
1499 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
1500 true, &fd)) { | |
1501 assert(false, "cannot find static field"); | |
1502 return NULL; // robustness | |
1503 } | |
1504 } else { | |
1505 // for instance fields we start with the current class and work | |
1506 // our way up through the superclass chain | |
1507 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
1508 &fd)) { | |
1509 assert(false, "cannot find instance field"); | |
1510 return NULL; // robustness | |
1511 } | |
1512 } | |
1513 | |
1514 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
1515 JVM_END | |
1516 | |
1517 | |
1518 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
1519 // some of this code was adapted from from jni_FromReflectedMethod | |
1520 | |
1521 oop reflected = JNIHandles::resolve_non_null(method); | |
1522 oop mirror = NULL; | |
1523 int slot = 0; | |
1524 | |
1142 | 1525 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1526 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1527 slot = java_lang_reflect_Constructor::slot(reflected); | |
1528 } else { | |
1142 | 1529 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1530 "wrong type"); |
1531 mirror = java_lang_reflect_Method::clazz(reflected); | |
1532 slot = java_lang_reflect_Method::slot(reflected); | |
1533 } | |
1534 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1535 | |
1536 KlassHandle kh(THREAD, k); | |
1537 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
1538 if (m == NULL) { | |
1539 assert(false, "cannot find method"); | |
1540 return NULL; // robustness | |
1541 } | |
1542 | |
1543 return m; | |
1544 } | |
1545 | |
1546 | |
1547 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1548 JVMWrapper("JVM_GetMethodAnnotations"); | |
1549 | |
1550 // method is a handle to a java.lang.reflect.Method object | |
1551 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1552 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
1553 JVM_END | |
1554 | |
1555 | |
1556 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1557 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1558 | |
1559 // method is a handle to a java.lang.reflect.Method object | |
1560 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1561 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
1562 JVM_END | |
1563 | |
1564 | |
1565 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1566 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1567 | |
1568 // method is a handle to a java.lang.reflect.Method object | |
1569 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1570 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
1571 JVM_END | |
1572 | |
1573 | |
1574 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1575 | |
1576 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1577 { | |
1578 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1579 JvmtiVMObjectAllocEventCollector oam; | |
1580 | |
1581 // Exclude primitive types and array types | |
1582 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1583 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1584 // Return empty array | |
1142 | 1585 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1586 return (jobjectArray) JNIHandles::make_local(env, res); |
1587 } | |
1588 | |
1589 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1590 constantPoolHandle cp(THREAD, k->constants()); | |
1591 | |
1592 // Ensure class is linked | |
1593 k->link_class(CHECK_NULL); | |
1594 | |
1595 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1596 bool skip_backtrace = false; | |
1597 | |
1598 // Allocate result | |
1599 int num_fields; | |
1600 | |
1601 if (publicOnly) { | |
1602 num_fields = 0; | |
3938 | 1603 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1604 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1605 } |
1606 } else { | |
3938 | 1607 num_fields = k->java_fields_count(); |
0 | 1608 |
1142 | 1609 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1610 num_fields--; |
1611 skip_backtrace = true; | |
1612 } | |
1613 } | |
1614 | |
1142 | 1615 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1616 objArrayHandle result (THREAD, r); |
1617 | |
1618 int out_idx = 0; | |
1619 fieldDescriptor fd; | |
3938 | 1620 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1621 if (skip_backtrace) { |
1622 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1623 int offset = fs.offset(); |
0 | 1624 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1625 } | |
1626 | |
3938 | 1627 if (!publicOnly || fs.access_flags().is_public()) { |
1628 fd.initialize(k(), fs.index()); | |
0 | 1629 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1630 result->obj_at_put(out_idx, field); | |
1631 ++out_idx; | |
1632 } | |
1633 } | |
1634 assert(out_idx == num_fields, "just checking"); | |
1635 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1636 } | |
1637 JVM_END | |
1638 | |
1639 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1640 { | |
1641 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1642 JvmtiVMObjectAllocEventCollector oam; | |
1643 | |
1644 // Exclude primitive types and array types | |
1645 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1646 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1647 // Return empty array | |
1142 | 1648 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1649 return (jobjectArray) JNIHandles::make_local(env, res); |
1650 } | |
1651 | |
1652 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1653 | |
1654 // Ensure class is linked | |
1655 k->link_class(CHECK_NULL); | |
1656 | |
1657 objArrayHandle methods (THREAD, k->methods()); | |
1658 int methods_length = methods->length(); | |
1659 int num_methods = 0; | |
1660 | |
1661 int i; | |
1662 for (i = 0; i < methods_length; i++) { | |
1663 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1664 if (!method->is_initializer()) { | |
1665 if (!publicOnly || method->is_public()) { | |
1666 ++num_methods; | |
1667 } | |
1668 } | |
1669 } | |
1670 | |
1671 // Allocate result | |
1142 | 1672 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1673 objArrayHandle result (THREAD, r); |
1674 | |
1675 int out_idx = 0; | |
1676 for (i = 0; i < methods_length; i++) { | |
1677 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1678 if (!method->is_initializer()) { | |
1679 if (!publicOnly || method->is_public()) { | |
1680 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1681 result->obj_at_put(out_idx, m); | |
1682 ++out_idx; | |
1683 } | |
1684 } | |
1685 } | |
1686 assert(out_idx == num_methods, "just checking"); | |
1687 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1688 } | |
1689 JVM_END | |
1690 | |
1691 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1692 { | |
1693 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1694 JvmtiVMObjectAllocEventCollector oam; | |
1695 | |
1696 // Exclude primitive types and array types | |
1697 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1698 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1699 // Return empty array | |
1142 | 1700 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1701 return (jobjectArray) JNIHandles::make_local(env, res); |
1702 } | |
1703 | |
1704 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1705 | |
1706 // Ensure class is linked | |
1707 k->link_class(CHECK_NULL); | |
1708 | |
1709 objArrayHandle methods (THREAD, k->methods()); | |
1710 int methods_length = methods->length(); | |
1711 int num_constructors = 0; | |
1712 | |
1713 int i; | |
1714 for (i = 0; i < methods_length; i++) { | |
1715 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1716 if (method->is_initializer() && !method->is_static()) { | |
1717 if (!publicOnly || method->is_public()) { | |
1718 ++num_constructors; | |
1719 } | |
1720 } | |
1721 } | |
1722 | |
1723 // Allocate result | |
1142 | 1724 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1725 objArrayHandle result(THREAD, r); |
1726 | |
1727 int out_idx = 0; | |
1728 for (i = 0; i < methods_length; i++) { | |
1729 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1730 if (method->is_initializer() && !method->is_static()) { | |
1731 if (!publicOnly || method->is_public()) { | |
1732 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1733 result->obj_at_put(out_idx, m); | |
1734 ++out_idx; | |
1735 } | |
1736 } | |
1737 } | |
1738 assert(out_idx == num_constructors, "just checking"); | |
1739 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1740 } | |
1741 JVM_END | |
1742 | |
1743 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1744 { | |
1745 JVMWrapper("JVM_GetClassAccessFlags"); | |
1746 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1747 // Primitive type | |
1748 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1749 } | |
1750 | |
1751 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1752 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
1753 } | |
1754 JVM_END | |
1755 | |
1756 | |
1757 // Constant pool access ////////////////////////////////////////////////////////// | |
1758 | |
1759 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1760 { | |
1761 JVMWrapper("JVM_GetClassConstantPool"); | |
1762 JvmtiVMObjectAllocEventCollector oam; | |
1763 | |
1764 // Return null for primitives and arrays | |
1765 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1766 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1767 if (Klass::cast(k)->oop_is_instance()) { | |
1768 instanceKlassHandle k_h(THREAD, k); | |
1769 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
1770 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
1771 return JNIHandles::make_local(jcp()); | |
1772 } | |
1773 } | |
1774 return NULL; | |
1775 } | |
1776 JVM_END | |
1777 | |
1778 | |
1779 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
1780 { | |
1781 JVMWrapper("JVM_ConstantPoolGetSize"); | |
1782 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1783 return cp->length(); | |
1784 } | |
1785 JVM_END | |
1786 | |
1787 | |
1788 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
1789 if (!cp->is_within_bounds(index)) { | |
1790 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
1791 } | |
1792 } | |
1793 | |
1794 | |
1795 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1796 { | |
1797 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
1798 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1799 bounds_check(cp, index, CHECK_NULL); | |
1800 constantTag tag = cp->tag_at(index); | |
1801 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1802 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1803 } | |
1804 klassOop k = cp->klass_at(index, CHECK_NULL); | |
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diff
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|
1805 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1806 } |
1807 JVM_END | |
1808 | |
1809 | |
1810 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1811 { | |
1812 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
1813 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1814 bounds_check(cp, index, CHECK_NULL); | |
1815 constantTag tag = cp->tag_at(index); | |
1816 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1817 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1818 } | |
1819 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
1820 if (k == NULL) return NULL; | |
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diff
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|
1821 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1822 } |
1823 JVM_END | |
1824 | |
1825 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1826 constantTag tag = cp->tag_at(index); | |
1827 if (!tag.is_method() && !tag.is_interface_method()) { | |
1828 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1829 } | |
1830 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1831 klassOop k_o; | |
1832 if (force_resolution) { | |
1833 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1834 } else { | |
1835 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1836 if (k_o == NULL) return NULL; | |
1837 } | |
1838 instanceKlassHandle k(THREAD, k_o); | |
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diff
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|
1839 Symbol* name = cp->uncached_name_ref_at(index); |
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diff
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|
1840 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1841 methodHandle m (THREAD, k->find_method(name, sig)); |
1842 if (m.is_null()) { | |
1843 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1844 } | |
1845 oop method; | |
1846 if (!m->is_initializer() || m->is_static()) { | |
1847 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1848 } else { | |
1849 method = Reflection::new_constructor(m, CHECK_NULL); | |
1850 } | |
1851 return JNIHandles::make_local(method); | |
1852 } | |
1853 | |
1854 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1855 { | |
1856 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
1857 JvmtiVMObjectAllocEventCollector oam; | |
1858 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1859 bounds_check(cp, index, CHECK_NULL); | |
1860 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
1861 return res; | |
1862 } | |
1863 JVM_END | |
1864 | |
1865 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1866 { | |
1867 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
1868 JvmtiVMObjectAllocEventCollector oam; | |
1869 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1870 bounds_check(cp, index, CHECK_NULL); | |
1871 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
1872 return res; | |
1873 } | |
1874 JVM_END | |
1875 | |
1876 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1877 constantTag tag = cp->tag_at(index); | |
1878 if (!tag.is_field()) { | |
1879 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1880 } | |
1881 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1882 klassOop k_o; | |
1883 if (force_resolution) { | |
1884 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1885 } else { | |
1886 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1887 if (k_o == NULL) return NULL; | |
1888 } | |
1889 instanceKlassHandle k(THREAD, k_o); | |
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1890 Symbol* name = cp->uncached_name_ref_at(index); |
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|
1891 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1892 fieldDescriptor fd; |
1893 klassOop target_klass = k->find_field(name, sig, &fd); | |
1894 if (target_klass == NULL) { | |
1895 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
1896 } | |
1897 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
1898 return JNIHandles::make_local(field); | |
1899 } | |
1900 | |
1901 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1902 { | |
1903 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
1904 JvmtiVMObjectAllocEventCollector oam; | |
1905 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1906 bounds_check(cp, index, CHECK_NULL); | |
1907 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
1908 return res; | |
1909 } | |
1910 JVM_END | |
1911 | |
1912 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1913 { | |
1914 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
1915 JvmtiVMObjectAllocEventCollector oam; | |
1916 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1917 bounds_check(cp, index, CHECK_NULL); | |
1918 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
1919 return res; | |
1920 } | |
1921 JVM_END | |
1922 | |
1923 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1924 { | |
1925 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
1926 JvmtiVMObjectAllocEventCollector oam; | |
1927 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1928 bounds_check(cp, index, CHECK_NULL); | |
1929 constantTag tag = cp->tag_at(index); | |
1930 if (!tag.is_field_or_method()) { | |
1931 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1932 } | |
1933 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
2177
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1934 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1935 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1936 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 1937 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 1938 objArrayHandle dest(THREAD, dest_o); |
1939 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
1940 dest->obj_at_put(0, str()); | |
1941 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
1942 dest->obj_at_put(1, str()); | |
1943 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
1944 dest->obj_at_put(2, str()); | |
1945 return (jobjectArray) JNIHandles::make_local(dest()); | |
1946 } | |
1947 JVM_END | |
1948 | |
1949 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1950 { | |
1951 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
1952 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1953 bounds_check(cp, index, CHECK_0); | |
1954 constantTag tag = cp->tag_at(index); | |
1955 if (!tag.is_int()) { | |
1956 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1957 } | |
1958 return cp->int_at(index); | |
1959 } | |
1960 JVM_END | |
1961 | |
1962 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1963 { | |
1964 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
1965 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1966 bounds_check(cp, index, CHECK_(0L)); | |
1967 constantTag tag = cp->tag_at(index); | |
1968 if (!tag.is_long()) { | |
1969 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1970 } | |
1971 return cp->long_at(index); | |
1972 } | |
1973 JVM_END | |
1974 | |
1975 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1976 { | |
1977 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
1978 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1979 bounds_check(cp, index, CHECK_(0.0f)); | |
1980 constantTag tag = cp->tag_at(index); | |
1981 if (!tag.is_float()) { | |
1982 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1983 } | |
1984 return cp->float_at(index); | |
1985 } | |
1986 JVM_END | |
1987 | |
1988 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1989 { | |
1990 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
1991 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1992 bounds_check(cp, index, CHECK_(0.0)); | |
1993 constantTag tag = cp->tag_at(index); | |
1994 if (!tag.is_double()) { | |
1995 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1996 } | |
1997 return cp->double_at(index); | |
1998 } | |
1999 JVM_END | |
2000 | |
2001 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
2002 { | |
2003 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
2004 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
2005 bounds_check(cp, index, CHECK_NULL); | |
2006 constantTag tag = cp->tag_at(index); | |
2007 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
2008 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2009 } | |
2010 oop str = cp->string_at(index, CHECK_NULL); | |
2011 return (jstring) JNIHandles::make_local(str); | |
2012 } | |
2013 JVM_END | |
2014 | |
2015 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
2016 { | |
2017 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2018 JvmtiVMObjectAllocEventCollector oam; | |
2019 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
2020 bounds_check(cp, index, CHECK_NULL); | |
2021 constantTag tag = cp->tag_at(index); | |
2022 if (!tag.is_symbol()) { | |
2023 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2024 } | |
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2025 Symbol* sym = cp->symbol_at(index); |
0 | 2026 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2027 return (jstring) JNIHandles::make_local(str()); | |
2028 } | |
2029 JVM_END | |
2030 | |
2031 | |
2032 // Assertion support. ////////////////////////////////////////////////////////// | |
2033 | |
2034 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2035 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2036 assert(cls != NULL, "bad class"); | |
2037 | |
2038 oop r = JNIHandles::resolve(cls); | |
2039 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2040 if (java_lang_Class::is_primitive(r)) return false; | |
2041 | |
2042 klassOop k = java_lang_Class::as_klassOop(r); | |
2043 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
2044 if (! Klass::cast(k)->oop_is_instance()) return false; | |
2045 | |
2046 ResourceMark rm(THREAD); | |
2047 const char* name = Klass::cast(k)->name()->as_C_string(); | |
2048 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
2049 return JavaAssertions::enabled(name, system_class); | |
2050 | |
2051 JVM_END | |
2052 | |
2053 | |
2054 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2055 // command-line assertion arguments (i.e., -ea, -da). | |
2056 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2057 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2058 JvmtiVMObjectAllocEventCollector oam; | |
2059 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2060 return JNIHandles::make_local(env, asd); | |
2061 JVM_END | |
2062 | |
2063 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2064 | |
2065 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2066 | |
2067 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2068 // All functions from this section should call the jvmtiThreadSate function: | |
2069 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
2070 // The function returns a klassOop of the _scratch_class if the verifier | |
2071 // was invoked in the middle of the class redefinition. | |
2072 // Otherwise it returns its argument value which is the _the_class klassOop. | |
2073 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
2074 | |
2075 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2076 JVMWrapper("JVM_GetClassNameUTF"); | |
2077 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2078 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2079 return Klass::cast(k)->name()->as_utf8(); | |
2080 JVM_END | |
2081 | |
2082 | |
2083 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2084 JVMWrapper("JVM_GetClassCPTypes"); | |
2085 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2086 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2087 // types will have length zero if this is not an instanceKlass | |
2088 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
2089 if (Klass::cast(k)->oop_is_instance()) { | |
2090 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2091 for (int index = cp->length() - 1; index >= 0; index--) { | |
2092 constantTag tag = cp->tag_at(index); | |
2093 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
2094 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
2095 } | |
2096 } | |
2097 JVM_END | |
2098 | |
2099 | |
2100 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2101 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
2102 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2103 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2104 if (!Klass::cast(k)->oop_is_instance()) | |
2105 return 0; | |
2106 return instanceKlass::cast(k)->constants()->length(); | |
2107 JVM_END | |
2108 | |
2109 | |
2110 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2111 JVMWrapper("JVM_GetClassFieldsCount"); | |
2112 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2113 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2114 if (!Klass::cast(k)->oop_is_instance()) | |
2115 return 0; | |
3938 | 2116 return instanceKlass::cast(k)->java_fields_count(); |
0 | 2117 JVM_END |
2118 | |
2119 | |
2120 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2121 JVMWrapper("JVM_GetClassMethodsCount"); | |
2122 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2123 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2124 if (!Klass::cast(k)->oop_is_instance()) | |
2125 return 0; | |
2126 return instanceKlass::cast(k)->methods()->length(); | |
2127 JVM_END | |
2128 | |
2129 | |
2130 // The following methods, used for the verifier, are never called with | |
2131 // array klasses, so a direct cast to instanceKlass is safe. | |
2132 // Typically, these methods are called in a loop with bounds determined | |
2133 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2134 // zero for arrays. | |
2135 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2136 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
2137 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2138 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2139 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2140 int length = methodOop(method)->checked_exceptions_length(); | |
2141 if (length > 0) { | |
2142 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
2143 for (int i = 0; i < length; i++) { | |
2144 exceptions[i] = table[i].class_cp_index; | |
2145 } | |
2146 } | |
2147 JVM_END | |
2148 | |
2149 | |
2150 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2151 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
2152 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2153 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2154 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2155 return methodOop(method)->checked_exceptions_length(); | |
2156 JVM_END | |
2157 | |
2158 | |
2159 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2160 JVMWrapper("JVM_GetMethodIxByteCode"); | |
2161 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2162 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2163 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2164 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
2165 JVM_END | |
2166 | |
2167 | |
2168 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2169 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
2170 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2171 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2172 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2173 return methodOop(method)->code_size(); | |
2174 JVM_END | |
2175 | |
2176 | |
2177 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2178 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
2179 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2180 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2181 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2182 typeArrayOop extable = methodOop(method)->exception_table(); | |
2183 entry->start_pc = extable->int_at(entry_index * 4); | |
2184 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
2185 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
2186 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
2187 JVM_END | |
2188 | |
2189 | |
2190 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2191 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
2192 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2193 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2194 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2195 return methodOop(method)->exception_table()->length() / 4; | |
2196 JVM_END | |
2197 | |
2198 | |
2199 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2200 JVMWrapper("JVM_GetMethodIxModifiers"); | |
2201 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2202 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2203 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2204 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2205 JVM_END | |
2206 | |
2207 | |
2208 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2209 JVMWrapper("JVM_GetFieldIxModifiers"); | |
2210 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2211 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
3938 | 2212 return instanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2213 JVM_END |
2214 | |
2215 | |
2216 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2217 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
2218 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2219 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2220 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2221 return methodOop(method)->max_locals(); | |
2222 JVM_END | |
2223 | |
2224 | |
2225 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2226 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
2227 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2228 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2229 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2230 return methodOop(method)->size_of_parameters(); | |
2231 JVM_END | |
2232 | |
2233 | |
2234 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2235 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
2236 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2237 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2238 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2239 return methodOop(method)->max_stack(); | |
2240 JVM_END | |
2241 | |
2242 | |
2243 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2244 JVMWrapper("JVM_IsConstructorIx"); | |
2245 ResourceMark rm(THREAD); | |
2246 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2247 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2248 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2249 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
2250 JVM_END | |
2251 | |
2252 | |
2253 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2254 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
2255 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2256 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2257 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2258 return methodOop(method)->name()->as_utf8(); | |
2259 JVM_END | |
2260 | |
2261 | |
2262 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2263 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
2264 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2265 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2266 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2267 return methodOop(method)->signature()->as_utf8(); | |
2268 JVM_END | |
2269 | |
2270 /** | |
2271 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2272 * read entries in the constant pool. Since the old verifier always | |
2273 * works on a copy of the code, it will not see any rewriting that | |
2274 * may possibly occur in the middle of verification. So it is important | |
2275 * that nothing it calls tries to use the cpCache instead of the raw | |
2276 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2277 */ | |
2278 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2279 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
2280 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2281 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2282 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2283 switch (cp->tag_at(cp_index).value()) { | |
2284 case JVM_CONSTANT_Fieldref: | |
2285 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2286 default: | |
2287 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2288 } | |
2289 ShouldNotReachHere(); | |
2290 return NULL; | |
2291 JVM_END | |
2292 | |
2293 | |
2294 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2295 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
2296 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2297 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2298 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2299 switch (cp->tag_at(cp_index).value()) { | |
2300 case JVM_CONSTANT_InterfaceMethodref: | |
2301 case JVM_CONSTANT_Methodref: | |
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diff
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|
2302 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2303 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2304 default: | |
2305 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2306 } | |
2307 ShouldNotReachHere(); | |
2308 return NULL; | |
2309 JVM_END | |
2310 | |
2311 | |
2312 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2313 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
2314 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2315 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2316 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2317 switch (cp->tag_at(cp_index).value()) { | |
2318 case JVM_CONSTANT_InterfaceMethodref: | |
2319 case JVM_CONSTANT_Methodref: | |
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|
2320 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2321 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2322 default: | |
2323 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2324 } | |
2325 ShouldNotReachHere(); | |
2326 return NULL; | |
2327 JVM_END | |
2328 | |
2329 | |
2330 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2331 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
2332 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2333 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2334 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2335 switch (cp->tag_at(cp_index).value()) { | |
2336 case JVM_CONSTANT_Fieldref: | |
2337 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2338 default: | |
2339 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2340 } | |
2341 ShouldNotReachHere(); | |
2342 return NULL; | |
2343 JVM_END | |
2344 | |
2345 | |
2346 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2347 JVMWrapper("JVM_GetCPClassNameUTF"); | |
2348 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2349 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2350 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
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|
2351 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2352 return classname->as_utf8(); |
2353 JVM_END | |
2354 | |
2355 | |
2356 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2357 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
2358 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2359 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2360 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2361 switch (cp->tag_at(cp_index).value()) { | |
2362 case JVM_CONSTANT_Fieldref: { | |
2363 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2364 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2365 return classname->as_utf8(); |
2366 } | |
2367 default: | |
2368 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2369 } | |
2370 ShouldNotReachHere(); | |
2371 return NULL; | |
2372 JVM_END | |
2373 | |
2374 | |
2375 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2376 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
2377 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2378 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2379 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2380 switch (cp->tag_at(cp_index).value()) { | |
2381 case JVM_CONSTANT_Methodref: | |
2382 case JVM_CONSTANT_InterfaceMethodref: { | |
2383 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2384 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2385 return classname->as_utf8(); |
2386 } | |
2387 default: | |
2388 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2389 } | |
2390 ShouldNotReachHere(); | |
2391 return NULL; | |
2392 JVM_END | |
2393 | |
2394 | |
3938 | 2395 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2396 JVMWrapper("JVM_GetCPFieldModifiers"); |
2397 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2398 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2399 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2400 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2401 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2402 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
2403 switch (cp->tag_at(cp_index).value()) { | |
2404 case JVM_CONSTANT_Fieldref: { | |
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|
2405 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2406 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2407 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2408 if (fs.name() == name && fs.signature() == signature) { | |
2409 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2410 } |
2411 } | |
2412 return -1; | |
2413 } | |
2414 default: | |
2415 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2416 } | |
2417 ShouldNotReachHere(); | |
2418 return 0; | |
2419 JVM_END | |
2420 | |
2421 | |
2422 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2423 JVMWrapper("JVM_GetCPMethodModifiers"); | |
2424 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2425 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2426 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2427 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2428 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2429 switch (cp->tag_at(cp_index).value()) { | |
2430 case JVM_CONSTANT_Methodref: | |
2431 case JVM_CONSTANT_InterfaceMethodref: { | |
2177
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diff
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|
2432 Symbol* name = cp->uncached_name_ref_at(cp_index); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2433 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
0 | 2434 objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
2435 int methods_count = methods->length(); | |
2436 for (int i = 0; i < methods_count; i++) { | |
2437 methodOop method = methodOop(methods->obj_at(i)); | |
2438 if (method->name() == name && method->signature() == signature) { | |
2439 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2440 } | |
2441 } | |
2442 return -1; | |
2443 } | |
2444 default: | |
2445 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2446 } | |
2447 ShouldNotReachHere(); | |
2448 return 0; | |
2449 JVM_END | |
2450 | |
2451 | |
2452 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2453 | |
2454 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2455 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2456 JVM_END | |
2457 | |
2458 | |
2459 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2460 JVMWrapper("JVM_IsSameClassPackage"); | |
2461 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2462 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
2463 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
2464 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
2465 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
2466 JVM_END | |
2467 | |
2468 | |
2469 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2470 | |
2471 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2472 JVMWrapper2("JVM_Open (%s)", fname); | |
2473 | |
2474 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2475 int result = os::open(fname, flags, mode); |
0 | 2476 if (result >= 0) { |
2477 return result; | |
2478 } else { | |
2479 switch(errno) { | |
2480 case EEXIST: | |
2481 return JVM_EEXIST; | |
2482 default: | |
2483 return -1; | |
2484 } | |
2485 } | |
2486 JVM_END | |
2487 | |
2488 | |
2489 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2490 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2491 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2492 return os::close(fd); |
0 | 2493 JVM_END |
2494 | |
2495 | |
2496 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2497 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2498 | |
2499 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2500 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2501 JVM_END |
2502 | |
2503 | |
2504 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2505 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2506 | |
2507 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2508 return (jint)os::write(fd, buf, nbytes); |
0 | 2509 JVM_END |
2510 | |
2511 | |
2512 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2513 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2514 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2515 return os::available(fd, pbytes); |
0 | 2516 JVM_END |
2517 | |
2518 | |
2519 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2520 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2521 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2522 return os::lseek(fd, offset, whence); |
0 | 2523 JVM_END |
2524 | |
2525 | |
2526 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2527 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2528 return os::ftruncate(fd, length); |
0 | 2529 JVM_END |
2530 | |
2531 | |
2532 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2533 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2534 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2535 return os::fsync(fd); |
0 | 2536 JVM_END |
2537 | |
2538 | |
2539 // Printing support ////////////////////////////////////////////////// | |
2540 extern "C" { | |
2541 | |
2542 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2543 // see bug 4399518, 4417214 | |
2544 if ((intptr_t)count <= 0) return -1; | |
2545 return vsnprintf(str, count, fmt, args); | |
2546 } | |
2547 | |
2548 | |
2549 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2550 va_list args; | |
2551 int len; | |
2552 va_start(args, fmt); | |
2553 len = jio_vsnprintf(str, count, fmt, args); | |
2554 va_end(args); | |
2555 return len; | |
2556 } | |
2557 | |
2558 | |
2559 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2560 int len; | |
2561 va_list args; | |
2562 va_start(args, fmt); | |
2563 len = jio_vfprintf(f, fmt, args); | |
2564 va_end(args); | |
2565 return len; | |
2566 } | |
2567 | |
2568 | |
2569 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2570 if (Arguments::vfprintf_hook() != NULL) { | |
2571 return Arguments::vfprintf_hook()(f, fmt, args); | |
2572 } else { | |
2573 return vfprintf(f, fmt, args); | |
2574 } | |
2575 } | |
2576 | |
2577 | |
2191 | 2578 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2579 int len; |
2580 va_list args; | |
2581 va_start(args, fmt); | |
2582 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2583 va_end(args); | |
2584 return len; | |
2585 } | |
2586 | |
2587 | |
2588 // HotSpot specific jio method | |
2589 void jio_print(const char* s) { | |
2590 // Try to make this function as atomic as possible. | |
2591 if (Arguments::vfprintf_hook() != NULL) { | |
2592 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2593 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2594 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2595 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2596 } |
2597 } | |
2598 | |
2599 } // Extern C | |
2600 | |
2601 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2602 | |
2603 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2604 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2605 // OSThread objects. The exception to this rule is when the target object is the thread | |
2606 // doing the operation, in which case we know that the thread won't exit until the | |
2607 // operation is done (all exits being voluntary). There are a few cases where it is | |
2608 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2609 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2610 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2611 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2612 // implementation is local to this file, we always lock Threads_lock for that one. | |
2613 | |
2614 static void thread_entry(JavaThread* thread, TRAPS) { | |
2615 HandleMark hm(THREAD); | |
2616 Handle obj(THREAD, thread->threadObj()); | |
2617 JavaValue result(T_VOID); | |
2618 JavaCalls::call_virtual(&result, | |
2619 obj, | |
1142 | 2620 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2621 vmSymbols::run_method_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
2622 vmSymbols::void_method_signature(), |
0 | 2623 THREAD); |
2624 } | |
2625 | |
2626 | |
2627 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2628 JVMWrapper("JVM_StartThread"); | |
2629 JavaThread *native_thread = NULL; | |
2630 | |
2631 // We cannot hold the Threads_lock when we throw an exception, | |
2632 // due to rank ordering issues. Example: we might need to grab the | |
2633 // Heap_lock while we construct the exception. | |
2634 bool throw_illegal_thread_state = false; | |
2635 | |
2636 // We must release the Threads_lock before we can post a jvmti event | |
2637 // in Thread::start. | |
2638 { | |
2639 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2640 // we operate. | |
2641 MutexLocker mu(Threads_lock); | |
2642 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2643 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2644 // re-starting an already started thread, so we should usually find |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2645 // that the JavaThread is null. However for a JNI attached thread |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2646 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2647 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2648 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2649 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2650 throw_illegal_thread_state = true; |
0 | 2651 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2652 // 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
|
2653 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2654 |
0 | 2655 jlong size = |
2656 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2657 // Allocate the C++ Thread structure and create the native thread. The | |
2658 // stack size retrieved from java is signed, but the constructor takes | |
2659 // size_t (an unsigned type), so avoid passing negative values which would | |
2660 // result in really large stacks. | |
2661 size_t sz = size > 0 ? (size_t) size : 0; | |
2662 native_thread = new JavaThread(&thread_entry, sz); | |
2663 | |
2664 // At this point it may be possible that no osthread was created for the | |
2665 // JavaThread due to lack of memory. Check for this situation and throw | |
2666 // an exception if necessary. Eventually we may want to change this so | |
2667 // that we only grab the lock if the thread was created successfully - | |
2668 // then we can also do this check and throw the exception in the | |
2669 // JavaThread constructor. | |
2670 if (native_thread->osthread() != NULL) { | |
2671 // Note: the current thread is not being used within "prepare". | |
2672 native_thread->prepare(jthread); | |
2673 } | |
2674 } | |
2675 } | |
2676 | |
2677 if (throw_illegal_thread_state) { | |
2678 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2679 } | |
2680 | |
2681 assert(native_thread != NULL, "Starting null thread?"); | |
2682 | |
2683 if (native_thread->osthread() == NULL) { | |
2684 // No one should hold a reference to the 'native_thread'. | |
2685 delete native_thread; | |
2686 if (JvmtiExport::should_post_resource_exhausted()) { | |
2687 JvmtiExport::post_resource_exhausted( | |
2688 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2689 "unable to create new native thread"); | |
2690 } | |
2691 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2692 "unable to create new native thread"); | |
2693 } | |
2694 | |
2695 Thread::start(native_thread); | |
2696 | |
2697 JVM_END | |
2698 | |
2699 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2700 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2701 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2702 // same thread as the sender, no safepoint is needed. |
0 | 2703 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2704 JVMWrapper("JVM_StopThread"); | |
2705 | |
2706 oop java_throwable = JNIHandles::resolve(throwable); | |
2707 if (java_throwable == NULL) { | |
2708 THROW(vmSymbols::java_lang_NullPointerException()); | |
2709 } | |
2710 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2711 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
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|
2712 Events::log_exception(JavaThread::current(), |
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diff
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|
2713 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
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|
2714 receiver, (address)java_thread, throwable); |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2715 // First check if thread is alive |
0 | 2716 if (receiver != NULL) { |
2717 // Check if exception is getting thrown at self (use oop equality, since the | |
2718 // target object might exit) | |
2719 if (java_thread == thread->threadObj()) { | |
2720 THROW_OOP(java_throwable); | |
2721 } else { | |
2722 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2723 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2724 } | |
2725 } | |
2162
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parents:
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diff
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|
2726 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2727 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2728 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
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|
2729 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2730 // 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
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|
2731 // but that is overkill as it doesn't matter. We must set the |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
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|
2732 // 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
|
2733 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2734 java_lang_Thread::set_stillborn(java_thread); |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2735 } |
0 | 2736 JVM_END |
2737 | |
2738 | |
2739 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2740 JVMWrapper("JVM_IsThreadAlive"); | |
2741 | |
2742 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2743 return java_lang_Thread::is_alive(thread_oop); | |
2744 JVM_END | |
2745 | |
2746 | |
2747 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2748 JVMWrapper("JVM_SuspendThread"); | |
2749 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2750 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2751 | |
2752 if (receiver != NULL) { | |
2753 // thread has run and has not exited (still on threads list) | |
2754 | |
2755 { | |
2756 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2757 if (receiver->is_external_suspend()) { | |
2758 // Don't allow nested external suspend requests. We can't return | |
2759 // an error from this interface so just ignore the problem. | |
2760 return; | |
2761 } | |
2762 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2763 return; | |
2764 } | |
2765 receiver->set_external_suspend(); | |
2766 } | |
2767 | |
2768 // java_suspend() will catch threads in the process of exiting | |
2769 // and will ignore them. | |
2770 receiver->java_suspend(); | |
2771 | |
2772 // It would be nice to have the following assertion in all the | |
2773 // time, but it is possible for a racing resume request to have | |
2774 // resumed this thread right after we suspended it. Temporarily | |
2775 // enable this assertion if you are chasing a different kind of | |
2776 // bug. | |
2777 // | |
2778 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2779 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2780 } | |
2781 JVM_END | |
2782 | |
2783 | |
2784 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2785 JVMWrapper("JVM_ResumeThread"); | |
2786 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2787 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2788 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2789 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2790 // looks at it. | |
2791 MutexLocker ml(Threads_lock); | |
2792 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2793 if (thr != NULL) { | |
2794 // the thread has run and is not in the process of exiting | |
2795 thr->java_resume(); | |
2796 } | |
2797 JVM_END | |
2798 | |
2799 | |
2800 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2801 JVMWrapper("JVM_SetThreadPriority"); | |
2802 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2803 MutexLocker ml(Threads_lock); | |
2804 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2805 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2806 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2807 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2808 Thread::set_priority(thr, (ThreadPriority)prio); | |
2809 } | |
2810 JVM_END | |
2811 | |
2812 | |
2813 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2814 JVMWrapper("JVM_Yield"); | |
2815 if (os::dont_yield()) return; | |
4006 | 2816 #ifndef USDT2 |
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diff
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|
2817 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 2818 #else /* USDT2 */ |
2819 HOTSPOT_THREAD_YIELD(); | |
2820 #endif /* USDT2 */ | |
0 | 2821 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
2822 // Critical for similar threading behaviour | |
2823 if (ConvertYieldToSleep) { | |
2824 os::sleep(thread, MinSleepInterval, false); | |
2825 } else { | |
2826 os::yield(); | |
2827 } | |
2828 JVM_END | |
2829 | |
2830 | |
2831 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2832 JVMWrapper("JVM_Sleep"); | |
2833 | |
2834 if (millis < 0) { | |
2835 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2836 } | |
2837 | |
2838 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2839 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2840 } | |
2841 | |
2842 // Save current thread state and restore it at the end of this block. | |
2843 // And set new thread state to SLEEPING. | |
2844 JavaThreadSleepState jtss(thread); | |
2845 | |
4006 | 2846 #ifndef USDT2 |
1324
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1144
diff
changeset
|
2847 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 2848 #else /* USDT2 */ |
2849 HOTSPOT_THREAD_SLEEP_BEGIN( | |
2850 millis); | |
2851 #endif /* USDT2 */ | |
1324
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diff
changeset
|
2852 |
0 | 2853 if (millis == 0) { |
2854 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
2855 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
2856 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
2857 // for SOLARIS | |
2858 if (ConvertSleepToYield) { | |
2859 os::yield(); | |
2860 } else { | |
2861 ThreadState old_state = thread->osthread()->get_state(); | |
2862 thread->osthread()->set_state(SLEEPING); | |
2863 os::sleep(thread, MinSleepInterval, false); | |
2864 thread->osthread()->set_state(old_state); | |
2865 } | |
2866 } else { | |
2867 ThreadState old_state = thread->osthread()->get_state(); | |
2868 thread->osthread()->set_state(SLEEPING); | |
2869 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
2870 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
2871 // us while we were sleeping. We do not overwrite those. | |
2872 if (!HAS_PENDING_EXCEPTION) { | |
4006 | 2873 #ifndef USDT2 |
1324
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1144
diff
changeset
|
2874 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 2875 #else /* USDT2 */ |
2876 HOTSPOT_THREAD_SLEEP_END( | |
2877 1); | |
2878 #endif /* USDT2 */ | |
0 | 2879 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
2880 // to properly restore the thread state. That's likely wrong. | |
2881 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2882 } | |
2883 } | |
2884 thread->osthread()->set_state(old_state); | |
2885 } | |
4006 | 2886 #ifndef USDT2 |
1324
e392695de029
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diff
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|
2887 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 2888 #else /* USDT2 */ |
2889 HOTSPOT_THREAD_SLEEP_END( | |
2890 0); | |
2891 #endif /* USDT2 */ | |
0 | 2892 JVM_END |
2893 | |
2894 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
2895 JVMWrapper("JVM_CurrentThread"); | |
2896 oop jthread = thread->threadObj(); | |
2897 assert (thread != NULL, "no current thread!"); | |
2898 return JNIHandles::make_local(env, jthread); | |
2899 JVM_END | |
2900 | |
2901 | |
2902 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
2903 JVMWrapper("JVM_CountStackFrames"); | |
2904 | |
2905 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2906 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2907 bool throw_illegal_thread_state = false; | |
2908 int count = 0; | |
2909 | |
2910 { | |
2911 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2912 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2913 // acquire of the lock | |
2914 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2915 | |
2916 if (thr == NULL) { | |
2917 // do nothing | |
2918 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
2919 // Check whether this java thread has been suspended already. If not, throws | |
2920 // IllegalThreadStateException. We defer to throw that exception until | |
2921 // Threads_lock is released since loading exception class has to leave VM. | |
2922 // The correct way to test a thread is actually suspended is | |
2923 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
2924 // the Threads_lock. The above tests are sufficient for our purposes | |
2925 // provided the walkability of the stack is stable - which it isn't | |
2926 // 100% but close enough for most practical purposes. | |
2927 throw_illegal_thread_state = true; | |
2928 } else { | |
2929 // Count all java activation, i.e., number of vframes | |
2930 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
2931 // Native frames are not counted | |
2932 if (!vfst.method()->is_native()) count++; | |
2933 } | |
2934 } | |
2935 } | |
2936 | |
2937 if (throw_illegal_thread_state) { | |
2938 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
2939 "this thread is not suspended"); | |
2940 } | |
2941 return count; | |
2942 JVM_END | |
2943 | |
2944 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
2945 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
2946 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
2947 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
2948 // outside the critical section. Threads_lock is hot so we want to minimize | |
2949 // the hold-time. A cleaner interface would be to decompose interrupt into | |
2950 // two steps. The 1st phase, performed under Threads_lock, would return | |
2951 // a closure that'd be invoked after Threads_lock was dropped. | |
2952 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
2953 // admit spurious wakeups. | |
2954 | |
2955 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
2956 JVMWrapper("JVM_Interrupt"); | |
2957 | |
2958 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2959 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2960 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2961 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2962 // acquire of the lock | |
2963 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2964 if (thr != NULL) { | |
2965 Thread::interrupt(thr); | |
2966 } | |
2967 JVM_END | |
2968 | |
2969 | |
2970 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
2971 JVMWrapper("JVM_IsInterrupted"); | |
2972 | |
2973 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2974 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2975 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2976 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2977 // acquire of the lock | |
2978 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2979 if (thr == NULL) { | |
2980 return JNI_FALSE; | |
2981 } else { | |
2982 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
2983 } | |
2984 JVM_END | |
2985 | |
2986 | |
2987 // Return true iff the current thread has locked the object passed in | |
2988 | |
2989 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
2990 JVMWrapper("JVM_HoldsLock"); | |
2991 assert(THREAD->is_Java_thread(), "sanity check"); | |
2992 if (obj == NULL) { | |
2993 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
2994 } | |
2995 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
2996 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
2997 JVM_END | |
2998 | |
2999 | |
3000 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3001 JVMWrapper("JVM_DumpAllStacks"); | |
3002 VM_PrintThreads op; | |
3003 VMThread::execute(&op); | |
3004 if (JvmtiExport::should_post_data_dump()) { | |
3005 JvmtiExport::post_data_dump(); | |
3006 } | |
3007 JVM_END | |
3008 | |
4006 | 3009 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3010 JVMWrapper("JVM_SetNativeThreadName"); | |
3011 ResourceMark rm(THREAD); | |
3012 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3013 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3014 // Thread naming only supported for the current thread, doesn't work for | |
3015 // target threads. | |
3016 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3017 // we don't set the name of an attached thread to avoid stepping | |
3018 // on other programs | |
3019 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3020 os::set_native_thread_name(thread_name); | |
3021 } | |
3022 JVM_END | |
0 | 3023 |
3024 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3025 | |
3026 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3027 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3028 if (jthread->privileged_stack_top() == NULL) return false; | |
3029 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3030 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3031 if (loader == NULL) return true; | |
3032 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3033 if (trusted) return true; | |
3034 } | |
3035 return false; | |
3036 } | |
3037 | |
3038 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3039 JVMWrapper("JVM_CurrentLoadedClass"); | |
3040 ResourceMark rm(THREAD); | |
3041 | |
3042 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3043 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3044 bool trusted = is_trusted_frame(thread, &vfst); | |
3045 if (trusted) return NULL; | |
3046 | |
3047 methodOop m = vfst.method(); | |
3048 if (!m->is_native()) { | |
3049 klassOop holder = m->method_holder(); | |
3050 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3051 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3052 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
3053 } | |
3054 } | |
3055 } | |
3056 return NULL; | |
3057 JVM_END | |
3058 | |
3059 | |
3060 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3061 JVMWrapper("JVM_CurrentClassLoader"); | |
3062 ResourceMark rm(THREAD); | |
3063 | |
3064 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3065 | |
3066 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3067 bool trusted = is_trusted_frame(thread, &vfst); | |
3068 if (trusted) return NULL; | |
3069 | |
3070 methodOop m = vfst.method(); | |
3071 if (!m->is_native()) { | |
3072 klassOop holder = m->method_holder(); | |
3073 assert(holder->is_klass(), "just checking"); | |
3074 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3075 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3076 return JNIHandles::make_local(env, loader); | |
3077 } | |
3078 } | |
3079 } | |
3080 return NULL; | |
3081 JVM_END | |
3082 | |
3083 | |
3084 // Utility object for collecting method holders walking down the stack | |
3085 class KlassLink: public ResourceObj { | |
3086 public: | |
3087 KlassHandle klass; | |
3088 KlassLink* next; | |
3089 | |
3090 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3091 }; | |
3092 | |
3093 | |
3094 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3095 JVMWrapper("JVM_GetClassContext"); | |
3096 ResourceMark rm(THREAD); | |
3097 JvmtiVMObjectAllocEventCollector oam; | |
3098 // Collect linked list of (handles to) method holders | |
3099 KlassLink* first = NULL; | |
3100 KlassLink* last = NULL; | |
3101 int depth = 0; | |
3102 | |
3103 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
3104 // Native frames are not returned | |
3105 if (!vfst.method()->is_native()) { | |
3106 klassOop holder = vfst.method()->method_holder(); | |
3107 assert(holder->is_klass(), "just checking"); | |
3108 depth++; | |
3109 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3110 if (first == NULL) { | |
3111 first = last = l; | |
3112 } else { | |
3113 last->next = l; | |
3114 last = l; | |
3115 } | |
3116 } | |
3117 } | |
3118 | |
3119 // Create result array of type [Ljava/lang/Class; | |
1142 | 3120 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3121 // Fill in mirrors corresponding to method holders |
3122 int index = 0; | |
3123 while (first != NULL) { | |
3124 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
3125 first = first->next; | |
3126 } | |
3127 assert(index == depth, "just checking"); | |
3128 | |
3129 return (jobjectArray) JNIHandles::make_local(env, result); | |
3130 JVM_END | |
3131 | |
3132 | |
3133 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3134 JVMWrapper("JVM_ClassDepth"); | |
3135 ResourceMark rm(THREAD); | |
3136 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3137 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3138 | |
3139 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3140 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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diff
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|
3141 if (class_name_sym == NULL) { |
0 | 3142 return -1; |
3143 } | |
3144 | |
3145 int depth = 0; | |
3146 | |
3147 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3148 if (!vfst.method()->is_native()) { | |
3149 klassOop holder = vfst.method()->method_holder(); | |
3150 assert(holder->is_klass(), "just checking"); | |
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3151 if (instanceKlass::cast(holder)->name() == class_name_sym) { |
0 | 3152 return depth; |
3153 } | |
3154 depth++; | |
3155 } | |
3156 } | |
3157 return -1; | |
3158 JVM_END | |
3159 | |
3160 | |
3161 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3162 JVMWrapper("JVM_ClassLoaderDepth"); | |
3163 ResourceMark rm(THREAD); | |
3164 int depth = 0; | |
3165 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3166 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3167 bool trusted = is_trusted_frame(thread, &vfst); | |
3168 if (trusted) return -1; | |
3169 | |
3170 methodOop m = vfst.method(); | |
3171 if (!m->is_native()) { | |
3172 klassOop holder = m->method_holder(); | |
3173 assert(holder->is_klass(), "just checking"); | |
3174 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3175 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3176 return depth; | |
3177 } | |
3178 depth++; | |
3179 } | |
3180 } | |
3181 return -1; | |
3182 JVM_END | |
3183 | |
3184 | |
3185 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3186 | |
3187 | |
3188 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3189 JVMWrapper("JVM_GetSystemPackage"); | |
3190 ResourceMark rm(THREAD); | |
3191 JvmtiVMObjectAllocEventCollector oam; | |
3192 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3193 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3194 return (jstring) JNIHandles::make_local(result); | |
3195 JVM_END | |
3196 | |
3197 | |
3198 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3199 JVMWrapper("JVM_GetSystemPackages"); | |
3200 JvmtiVMObjectAllocEventCollector oam; | |
3201 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3202 return (jobjectArray) JNIHandles::make_local(result); | |
3203 JVM_END | |
3204 | |
3205 | |
3206 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3207 | |
3208 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
3209 if (current_class == NULL) { | |
3210 return true; | |
3211 } | |
3212 if ((current_class == field_class) || access.is_public()) { | |
3213 return true; | |
3214 } | |
3215 | |
3216 if (access.is_protected()) { | |
3217 // See if current_class is a subclass of field_class | |
3218 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
3219 return true; | |
3220 } | |
3221 } | |
3222 | |
3223 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
3224 } | |
3225 | |
3226 | |
3227 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3228 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3229 JVMWrapper("JVM_AllocateNewObject"); | |
3230 JvmtiVMObjectAllocEventCollector oam; | |
3231 // Receiver is not used | |
3232 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3233 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3234 | |
3235 // Cannot instantiate primitive types | |
3236 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3237 ResourceMark rm(THREAD); | |
3238 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3239 } | |
3240 | |
3241 // Arrays not allowed here, must use JVM_AllocateNewArray | |
3242 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
3243 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
3244 ResourceMark rm(THREAD); | |
3245 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3246 } | |
3247 | |
3248 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
3249 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
3250 | |
3251 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3252 | |
3253 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3254 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3255 | |
3256 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3257 curr_klass->initialize(CHECK_NULL); | |
3258 | |
3259 methodHandle m (THREAD, | |
3260 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3261 vmSymbols::void_method_signature())); | |
3262 if (m.is_null()) { | |
3263 ResourceMark rm(THREAD); | |
3264 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
3265 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
3266 vmSymbols::object_initializer_name(), | |
3267 vmSymbols::void_method_signature())); | |
3268 } | |
3269 | |
3270 if (curr_klass == init_klass && !m->is_public()) { | |
3271 // Calling the constructor for class 'curr_klass'. | |
3272 // Only allow calls to a public no-arg constructor. | |
3273 // This path corresponds to creating an Externalizable object. | |
3274 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3275 } | |
3276 | |
3277 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3278 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3279 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3280 } | |
3281 | |
3282 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3283 // Call constructor m. This might call a constructor higher up in the hierachy | |
3284 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3285 | |
3286 return JNIHandles::make_local(obj()); | |
3287 JVM_END | |
3288 | |
3289 | |
3290 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3291 JVMWrapper("JVM_AllocateNewArray"); | |
3292 JvmtiVMObjectAllocEventCollector oam; | |
3293 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3294 | |
3295 if (java_lang_Class::is_primitive(mirror)) { | |
3296 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3297 } | |
3298 klassOop k = java_lang_Class::as_klassOop(mirror); | |
3299 oop result; | |
3300 | |
3301 if (k->klass_part()->oop_is_typeArray()) { | |
3302 // typeArray | |
3303 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
3304 } else if (k->klass_part()->oop_is_objArray()) { | |
3305 // objArray | |
3306 objArrayKlassHandle oak(THREAD, k); | |
3307 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
3308 result = oak->allocate(length, CHECK_NULL); | |
3309 } else { | |
3310 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3311 } | |
3312 return JNIHandles::make_local(env, result); | |
3313 JVM_END | |
3314 | |
3315 | |
3316 // Return the first non-null class loader up the execution stack, or null | |
3317 // if only code from the null class loader is on the stack. | |
3318 | |
3319 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3320 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3321 // UseNewReflection | |
3322 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
3323 klassOop holder = vfst.method()->method_holder(); | |
3324 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3325 if (loader != NULL) { | |
3326 return JNIHandles::make_local(env, loader); | |
3327 } | |
3328 } | |
3329 return NULL; | |
3330 JVM_END | |
3331 | |
3332 | |
3333 // Load a class relative to the most recent class on the stack with a non-null | |
3334 // classloader. | |
3335 // This function has been deprecated and should not be considered part of the | |
3336 // specified JVM interface. | |
3337 | |
3338 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3339 jclass currClass, jstring currClassName)) | |
3340 JVMWrapper("JVM_LoadClass0"); | |
3341 // Receiver is not used | |
3342 ResourceMark rm(THREAD); | |
3343 | |
3344 // Class name argument is not guaranteed to be in internal format | |
3345 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3346 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3347 | |
3348 const char* str = java_lang_String::as_utf8_string(string()); | |
3349 | |
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3350 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3351 // It's impossible to create this class; the name cannot fit |
3352 // into the constant pool. | |
3353 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3354 } | |
3355 | |
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3356 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3357 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3358 // Find the most recent class on the stack with a non-null classloader | |
3359 oop loader = NULL; | |
3360 oop protection_domain = NULL; | |
3361 if (curr_klass.is_null()) { | |
3362 for (vframeStream vfst(thread); | |
3363 !vfst.at_end() && loader == NULL; | |
3364 vfst.next()) { | |
3365 if (!vfst.method()->is_native()) { | |
3366 klassOop holder = vfst.method()->method_holder(); | |
3367 loader = instanceKlass::cast(holder)->class_loader(); | |
3368 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
3369 } | |
3370 } | |
3371 } else { | |
3372 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
3373 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
3374 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
3375 } | |
3376 Handle h_loader(THREAD, loader); | |
3377 Handle h_prot (THREAD, protection_domain); | |
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3378 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
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3379 false, thread); |
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|
3380 if (TraceClassResolution && result != NULL) { |
715dceaa89b7
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|
3381 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
715dceaa89b7
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3382 } |
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3383 return result; |
0 | 3384 JVM_END |
3385 | |
3386 | |
3387 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3388 | |
3389 | |
3390 // resolve array handle and check arguments | |
3391 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3392 if (arr == NULL) { | |
3393 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3394 } | |
3395 oop a = JNIHandles::resolve_non_null(arr); | |
3396 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
3397 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
3398 } | |
3399 return arrayOop(a); | |
3400 } | |
3401 | |
3402 | |
3403 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3404 JVMWrapper("JVM_GetArrayLength"); | |
3405 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3406 return a->length(); | |
3407 JVM_END | |
3408 | |
3409 | |
3410 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3411 JVMWrapper("JVM_Array_Get"); | |
3412 JvmtiVMObjectAllocEventCollector oam; | |
3413 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3414 jvalue value; | |
3415 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3416 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3417 return JNIHandles::make_local(env, box); | |
3418 JVM_END | |
3419 | |
3420 | |
3421 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3422 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3423 jvalue value; | |
3424 value.i = 0; // to initialize value before getting used in CHECK | |
3425 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3426 assert(a->is_typeArray(), "just checking"); | |
3427 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3428 BasicType wide_type = (BasicType) wCode; | |
3429 if (type != wide_type) { | |
3430 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3431 } | |
3432 return value; | |
3433 JVM_END | |
3434 | |
3435 | |
3436 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3437 JVMWrapper("JVM_SetArrayElement"); | |
3438 arrayOop a = check_array(env, arr, false, CHECK); | |
3439 oop box = JNIHandles::resolve(val); | |
3440 jvalue value; | |
3441 value.i = 0; // to initialize value before getting used in CHECK | |
3442 BasicType value_type; | |
3443 if (a->is_objArray()) { | |
3444 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3445 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3446 } else { | |
3447 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3448 } | |
3449 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3450 JVM_END | |
3451 | |
3452 | |
3453 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3454 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3455 arrayOop a = check_array(env, arr, true, CHECK); | |
3456 assert(a->is_typeArray(), "just checking"); | |
3457 BasicType value_type = (BasicType) vCode; | |
3458 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3459 JVM_END | |
3460 | |
3461 | |
3462 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3463 JVMWrapper("JVM_NewArray"); | |
3464 JvmtiVMObjectAllocEventCollector oam; | |
3465 oop element_mirror = JNIHandles::resolve(eltClass); | |
3466 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3467 return JNIHandles::make_local(env, result); | |
3468 JVM_END | |
3469 | |
3470 | |
3471 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3472 JVMWrapper("JVM_NewMultiArray"); | |
3473 JvmtiVMObjectAllocEventCollector oam; | |
3474 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3475 oop element_mirror = JNIHandles::resolve(eltClass); | |
3476 assert(dim_array->is_typeArray(), "just checking"); | |
3477 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3478 return JNIHandles::make_local(env, result); | |
3479 JVM_END | |
3480 | |
3481 | |
3482 // Networking library support //////////////////////////////////////////////////////////////////// | |
3483 | |
3484 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3485 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
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diff
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|
3486 return 0; |
0 | 3487 JVM_END |
3488 | |
3489 | |
3490 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3491 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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parents:
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diff
changeset
|
3492 return os::socket(domain, type, protocol); |
0 | 3493 JVM_END |
3494 | |
3495 | |
3496 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3497 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3498 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3499 return os::socket_close(fd); |
0 | 3500 JVM_END |
3501 | |
3502 | |
3503 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3504 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3505 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3506 return os::socket_shutdown(fd, howto); |
0 | 3507 JVM_END |
3508 | |
3509 | |
3510 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3511 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3512 //%note jvm_r6 | |
4717
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phh
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diff
changeset
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3513 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3514 JVM_END |
3515 | |
3516 | |
3517 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3518 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3519 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3520 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3521 JVM_END |
3522 | |
3523 | |
3524 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3525 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3526 //%note jvm_r6 | |
1980
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ikrylov
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diff
changeset
|
3527 return os::timeout(fd, timeout); |
0 | 3528 JVM_END |
3529 | |
3530 | |
3531 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3532 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3533 //%note jvm_r6 | |
1980
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ikrylov
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diff
changeset
|
3534 return os::listen(fd, count); |
0 | 3535 JVM_END |
3536 | |
3537 | |
3538 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3539 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3540 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
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|
3541 return os::connect(fd, him, (socklen_t)len); |
0 | 3542 JVM_END |
3543 | |
3544 | |
3545 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3546 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3547 //%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
|
3548 return os::bind(fd, him, (socklen_t)len); |
0 | 3549 JVM_END |
3550 | |
3551 | |
3552 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3553 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3554 //%note jvm_r6 | |
4717
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phh
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4006
diff
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|
3555 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3556 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
|
3557 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3558 return result; |
0 | 3559 JVM_END |
3560 | |
3561 | |
3562 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3563 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3564 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3565 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3566 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
|
3567 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3568 return result; |
0 | 3569 JVM_END |
3570 | |
3571 | |
3572 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3573 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3574 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3575 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3576 jint result = os::get_sock_name(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3577 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3578 return result; |
0 | 3579 JVM_END |
3580 | |
3581 | |
3582 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3583 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3584 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3585 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3586 JVM_END |
3587 | |
3588 | |
3589 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3590 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3591 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3592 return os::socket_available(fd, pbytes); |
0 | 3593 JVM_END |
3594 | |
3595 | |
3596 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3597 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3598 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3599 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3600 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
|
3601 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3602 return result; |
0 | 3603 JVM_END |
3604 | |
3605 | |
3606 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3607 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3608 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3609 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3610 JVM_END |
3611 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3612 |
0 | 3613 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3614 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3615 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3616 JVM_END |
0 | 3617 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3618 |
0 | 3619 // Library support /////////////////////////////////////////////////////////////////////////// |
3620 | |
3621 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3622 //%note jvm_ct | |
3623 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3624 char ebuf[1024]; | |
3625 void *load_result; | |
3626 { | |
3627 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3628 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3629 } |
3630 if (load_result == NULL) { | |
3631 char msg[1024]; | |
3632 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3633 // Since 'ebuf' may contain a string encoded using | |
3634 // platform encoding scheme, we need to pass | |
3635 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3636 // as the last argument. See bug 6367357. | |
3637 Handle h_exception = | |
3638 Exceptions::new_exception(thread, | |
3639 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3640 msg, Exceptions::unsafe_to_utf8); | |
3641 | |
3642 THROW_HANDLE_0(h_exception); | |
3643 } | |
3644 return load_result; | |
3645 JVM_END | |
3646 | |
3647 | |
3648 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3649 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3650 os::dll_unload(handle); |
0 | 3651 JVM_END |
3652 | |
3653 | |
3654 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3655 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3656 return os::dll_lookup(handle, name); |
0 | 3657 JVM_END |
3658 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3659 |
0 | 3660 // Floating point support //////////////////////////////////////////////////////////////////// |
3661 | |
3662 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3663 JVMWrapper("JVM_IsNaN"); | |
3664 return g_isnan(a); | |
3665 JVM_END | |
3666 | |
3667 | |
3668 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3669 | |
3670 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3671 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3672 return Threads::is_supported_jni_version_including_1_1(version); | |
3673 JVM_END | |
3674 | |
3675 | |
3676 // String support /////////////////////////////////////////////////////////////////////////// | |
3677 | |
3678 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3679 JVMWrapper("JVM_InternString"); | |
3680 JvmtiVMObjectAllocEventCollector oam; | |
3681 if (str == NULL) return NULL; | |
3682 oop string = JNIHandles::resolve_non_null(str); | |
3683 oop result = StringTable::intern(string, CHECK_NULL); | |
3684 return (jstring) JNIHandles::make_local(env, result); | |
3685 JVM_END | |
3686 | |
3687 | |
3688 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3689 | |
3690 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3691 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3692 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3693 // that only works with java threads. | |
3694 | |
3695 | |
3696 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3697 VM_Exit::block_if_vm_exited(); | |
3698 JVMWrapper("JVM_RawMonitorCreate"); | |
3699 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3700 } | |
3701 | |
3702 | |
3703 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3704 VM_Exit::block_if_vm_exited(); | |
3705 JVMWrapper("JVM_RawMonitorDestroy"); | |
3706 delete ((Mutex*) mon); | |
3707 } | |
3708 | |
3709 | |
3710 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3711 VM_Exit::block_if_vm_exited(); | |
3712 JVMWrapper("JVM_RawMonitorEnter"); | |
3713 ((Mutex*) mon)->jvm_raw_lock(); | |
3714 return 0; | |
3715 } | |
3716 | |
3717 | |
3718 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3719 VM_Exit::block_if_vm_exited(); | |
3720 JVMWrapper("JVM_RawMonitorExit"); | |
3721 ((Mutex*) mon)->jvm_raw_unlock(); | |
3722 } | |
3723 | |
3724 | |
3725 // Support for Serialization | |
3726 | |
3727 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3728 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3729 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3730 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3731 | |
3732 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3733 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3734 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3735 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3736 | |
3737 | |
3738 void initialize_converter_functions() { | |
3739 if (JDK_Version::is_gte_jdk14x_version()) { | |
3740 // These functions only exist for compatibility with 1.3.1 and earlier | |
3741 return; | |
3742 } | |
3743 | |
3744 // called from universe_post_init() | |
3745 assert( | |
3746 int_bits_to_float_fn == NULL && | |
3747 long_bits_to_double_fn == NULL && | |
3748 float_to_int_bits_fn == NULL && | |
3749 double_to_long_bits_fn == NULL , | |
3750 "initialization done twice" | |
3751 ); | |
3752 // initialize | |
3753 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3754 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3755 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3756 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3757 // verify | |
3758 assert( | |
3759 int_bits_to_float_fn != NULL && | |
3760 long_bits_to_double_fn != NULL && | |
3761 float_to_int_bits_fn != NULL && | |
3762 double_to_long_bits_fn != NULL , | |
3763 "initialization failed" | |
3764 ); | |
3765 } | |
3766 | |
3767 | |
3768 // Serialization | |
3769 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3770 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3771 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3772 | |
3773 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3774 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3775 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3776 oop o = JNIHandles::resolve(obj); | |
3777 | |
3778 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3779 THROW(vmSymbols::java_lang_NullPointerException()); | |
3780 } | |
3781 | |
3782 jsize nfids = fids->length(); | |
3783 if (nfids == 0) return; | |
3784 | |
3785 if (tcodes->length() < nfids) { | |
3786 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3787 } | |
3788 | |
3789 jsize off = 0; | |
3790 /* loop through fields, setting values */ | |
3791 for (jsize i = 0; i < nfids; i++) { | |
3792 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3793 int field_offset; | |
3794 if (fid != NULL) { | |
3795 // NULL is a legal value for fid, but retrieving the field offset | |
3796 // trigger assertion in that case | |
3797 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3798 } | |
3799 | |
3800 switch (tcodes->char_at(i)) { | |
3801 case 'Z': | |
3802 if (fid != NULL) { | |
3803 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3804 o->bool_field_put(field_offset, val); | |
3805 } | |
3806 off++; | |
3807 break; | |
3808 | |
3809 case 'B': | |
3810 if (fid != NULL) { | |
3811 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3812 } | |
3813 off++; | |
3814 break; | |
3815 | |
3816 case 'C': | |
3817 if (fid != NULL) { | |
3818 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3819 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3820 o->char_field_put(field_offset, val); | |
3821 } | |
3822 off += 2; | |
3823 break; | |
3824 | |
3825 case 'S': | |
3826 if (fid != NULL) { | |
3827 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3828 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3829 o->short_field_put(field_offset, val); | |
3830 } | |
3831 off += 2; | |
3832 break; | |
3833 | |
3834 case 'I': | |
3835 if (fid != NULL) { | |
3836 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3837 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3838 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3839 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3840 o->int_field_put(field_offset, ival); | |
3841 } | |
3842 off += 4; | |
3843 break; | |
3844 | |
3845 case 'F': | |
3846 if (fid != NULL) { | |
3847 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3848 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3849 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3850 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3851 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
3852 o->float_field_put(field_offset, fval); | |
3853 } | |
3854 off += 4; | |
3855 break; | |
3856 | |
3857 case 'J': | |
3858 if (fid != NULL) { | |
3859 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3860 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3861 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3862 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3863 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3864 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3865 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3866 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3867 o->long_field_put(field_offset, lval); | |
3868 } | |
3869 off += 8; | |
3870 break; | |
3871 | |
3872 case 'D': | |
3873 if (fid != NULL) { | |
3874 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3875 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3876 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3877 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3878 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3879 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3880 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3881 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3882 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
3883 o->double_field_put(field_offset, dval); | |
3884 } | |
3885 off += 8; | |
3886 break; | |
3887 | |
3888 default: | |
3889 // Illegal typecode | |
3890 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3891 } | |
3892 } | |
3893 JVM_END | |
3894 | |
3895 | |
3896 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3897 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3898 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3899 | |
3900 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3901 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3902 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3903 oop o = JNIHandles::resolve(obj); | |
3904 | |
3905 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3906 THROW(vmSymbols::java_lang_NullPointerException()); | |
3907 } | |
3908 | |
3909 jsize nfids = fids->length(); | |
3910 if (nfids == 0) return; | |
3911 | |
3912 if (tcodes->length() < nfids) { | |
3913 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3914 } | |
3915 | |
3916 /* loop through fields, fetching values */ | |
3917 jsize off = 0; | |
3918 for (jsize i = 0; i < nfids; i++) { | |
3919 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3920 if (fid == NULL) { | |
3921 THROW(vmSymbols::java_lang_NullPointerException()); | |
3922 } | |
3923 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3924 | |
3925 switch (tcodes->char_at(i)) { | |
3926 case 'Z': | |
3927 { | |
3928 jboolean val = o->bool_field(field_offset); | |
3929 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
3930 } | |
3931 break; | |
3932 | |
3933 case 'B': | |
3934 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
3935 break; | |
3936 | |
3937 case 'C': | |
3938 { | |
3939 jchar val = o->char_field(field_offset); | |
3940 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3941 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3942 } | |
3943 break; | |
3944 | |
3945 case 'S': | |
3946 { | |
3947 jshort val = o->short_field(field_offset); | |
3948 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3949 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3950 } | |
3951 break; | |
3952 | |
3953 case 'I': | |
3954 { | |
3955 jint val = o->int_field(field_offset); | |
3956 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3957 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3958 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3959 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3960 } | |
3961 break; | |
3962 | |
3963 case 'F': | |
3964 { | |
3965 jfloat fval = o->float_field(field_offset); | |
3966 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
3967 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
3968 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
3969 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
3970 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
3971 } | |
3972 break; | |
3973 | |
3974 case 'J': | |
3975 { | |
3976 jlong val = o->long_field(field_offset); | |
3977 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
3978 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
3979 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
3980 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
3981 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3982 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3983 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3984 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3985 } | |
3986 break; | |
3987 | |
3988 case 'D': | |
3989 { | |
3990 jdouble dval = o->double_field(field_offset); | |
3991 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
3992 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
3993 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
3994 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
3995 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
3996 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
3997 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
3998 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
3999 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4000 } | |
4001 break; | |
4002 | |
4003 default: | |
4004 // Illegal typecode | |
4005 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4006 } | |
4007 } | |
4008 JVM_END | |
4009 | |
4010 | |
4011 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4012 | |
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4013 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4014 // Security Note: |
4015 // The Java level wrapper will perform the necessary security check allowing | |
4016 // us to pass the NULL as the initiating class loader. | |
4017 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
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4018 |
0 | 4019 KlassHandle klass_handle(THREAD, klass); |
4020 // Check if we should initialize the class | |
4021 if (init && klass_handle->oop_is_instance()) { | |
4022 klass_handle->initialize(CHECK_NULL); | |
4023 } | |
4024 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4025 } | |
4026 | |
4027 | |
4028 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4029 | |
4030 #ifndef PRODUCT | |
4031 | |
4032 extern "C" { | |
4033 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4034 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4035 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4036 } | |
4037 | |
4038 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4039 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4040 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
4041 JVM_END | |
4042 | |
4043 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4044 JVMWrapper("JVM_AccessVMIntFlag"); | |
4045 intx v; | |
4046 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4047 *value = (jint)v; | |
4048 return result; | |
4049 JVM_END | |
4050 | |
4051 | |
4052 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4053 JVMWrapper("JVM_VMBreakPoint"); | |
4054 oop the_obj = JNIHandles::resolve(obj); | |
4055 BREAKPOINT; | |
4056 JVM_END | |
4057 | |
4058 | |
4059 #endif | |
4060 | |
4061 | |
4062 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4063 | |
4064 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4065 JVMWrapper("JVM_InvokeMethod"); | |
4066 Handle method_handle; | |
4067 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4068 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4069 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4070 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4071 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4072 jobject res = JNIHandles::make_local(env, result); | |
4073 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4074 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4075 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4076 if (java_lang_Class::is_primitive(ret_type)) { | |
4077 // Only for primitive type vm allocates memory for java object. | |
4078 // See box() method. | |
4079 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4080 } | |
4081 } | |
4082 return res; | |
4083 } else { | |
4084 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4085 } | |
4086 JVM_END | |
4087 | |
4088 | |
4089 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4090 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4091 oop constructor_mirror = JNIHandles::resolve(c); | |
4092 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4093 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4094 jobject res = JNIHandles::make_local(env, result); | |
4095 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4096 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4097 } | |
4098 return res; | |
4099 JVM_END | |
4100 | |
4101 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4102 | |
4103 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4104 JVMWrapper("JVM_SupportsCX8"); | |
4105 return VM_Version::supports_cx8(); | |
4106 JVM_END | |
4107 | |
4108 | |
4109 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4110 JVMWrapper("JVM_CX8Field"); | |
4111 jlong res; | |
4112 oop o = JNIHandles::resolve(obj); | |
4113 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4114 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4115 | |
4116 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4117 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4118 | |
4119 return res == oldVal; | |
4120 JVM_END | |
4121 | |
116
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4122 // DTrace /////////////////////////////////////////////////////////////////// |
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4123 |
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4124 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4125 JVMWrapper("JVM_DTraceGetVersion"); |
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4126 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4127 JVM_END |
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4128 |
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4129 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4130 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4131 JVM_DTraceProvider* providers)) |
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4132 JVMWrapper("JVM_DTraceActivate"); |
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4133 return DTraceJSDT::activate( |
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4134 version, module_name, providers_count, providers, CHECK_0); |
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4135 JVM_END |
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4136 |
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4137 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4138 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4139 return DTraceJSDT::is_probe_enabled(method); |
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4140 JVM_END |
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4141 |
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4142 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4143 JVMWrapper("JVM_DTraceDispose"); |
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4144 DTraceJSDT::dispose(handle); |
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4145 JVM_END |
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4146 |
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4147 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4148 JVMWrapper("JVM_DTraceIsSupported"); |
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4149 return DTraceJSDT::is_supported(); |
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4150 JVM_END |
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4151 |
0 | 4152 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4153 // jvmti agent threads, and JNI attaching threads are skipped) | |
4154 // See CR 6404306 regarding JNI attaching threads | |
4155 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4156 ResourceMark rm(THREAD); | |
4157 ThreadsListEnumerator tle(THREAD, false, false); | |
4158 JvmtiVMObjectAllocEventCollector oam; | |
4159 | |
4160 int num_threads = tle.num_threads(); | |
1142 | 4161 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4162 objArrayHandle threads_ah(THREAD, r); |
4163 | |
4164 for (int i = 0; i < num_threads; i++) { | |
4165 Handle h = tle.get_threadObj(i); | |
4166 threads_ah->obj_at_put(i, h()); | |
4167 } | |
4168 | |
4169 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4170 JVM_END | |
4171 | |
4172 | |
4173 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4174 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4175 // the corresponding entry in the given threads array | |
4176 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4177 JVMWrapper("JVM_DumpThreads"); | |
4178 JvmtiVMObjectAllocEventCollector oam; | |
4179 | |
4180 // Check if threads is null | |
4181 if (threads == NULL) { | |
4182 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4183 } | |
4184 | |
4185 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4186 objArrayHandle ah(THREAD, a); | |
4187 int num_threads = ah->length(); | |
4188 // check if threads is non-empty array | |
4189 if (num_threads == 0) { | |
4190 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4191 } | |
4192 | |
4193 // check if threads is not an array of objects of Thread class | |
4194 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
1142 | 4195 if (k != SystemDictionary::Thread_klass()) { |
0 | 4196 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4197 } | |
4198 | |
4199 ResourceMark rm(THREAD); | |
4200 | |
4201 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4202 for (int i = 0; i < num_threads; i++) { | |
4203 oop thread_obj = ah->obj_at(i); | |
4204 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4205 thread_handle_array->append(h); | |
4206 } | |
4207 | |
4208 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4209 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4210 | |
4211 JVM_END | |
4212 | |
4213 // JVM monitoring and management support | |
4214 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4215 return Management::get_jmm_interface(version); | |
4216 JVM_END | |
4217 | |
4218 // com.sun.tools.attach.VirtualMachine agent properties support | |
4219 // | |
4220 // Initialize the agent properties with the properties maintained in the VM | |
4221 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4222 JVMWrapper("JVM_InitAgentProperties"); | |
4223 ResourceMark rm; | |
4224 | |
4225 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4226 | |
4227 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4228 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4229 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4230 return properties; | |
4231 JVM_END | |
4232 | |
4233 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4234 { | |
4235 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4236 JvmtiVMObjectAllocEventCollector oam; | |
4237 | |
4238 if (ofClass == NULL) { | |
4239 return NULL; | |
4240 } | |
4241 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4242 // Special handling for primitive objects | |
4243 if (java_lang_Class::is_primitive(mirror())) { | |
4244 return NULL; | |
4245 } | |
4246 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
4247 if (!Klass::cast(k)->oop_is_instance()) { | |
4248 return NULL; | |
4249 } | |
4250 instanceKlassHandle ik_h(THREAD, k); | |
4251 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4252 if (encl_method_class_idx == 0) { | |
4253 return NULL; | |
4254 } | |
1142 | 4255 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4256 objArrayHandle dest(THREAD, dest_o); |
4257 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
4258 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
4259 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
4260 if (encl_method_method_idx != 0) { | |
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4261 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4262 extract_low_short_from_int( |
4263 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4264 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4265 dest->obj_at_put(1, str()); | |
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4266 sym = ik_h->constants()->symbol_at( |
0 | 4267 extract_high_short_from_int( |
4268 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4269 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4270 dest->obj_at_put(2, str()); | |
4271 } | |
4272 return (jobjectArray) JNIHandles::make_local(dest()); | |
4273 } | |
4274 JVM_END | |
4275 | |
4276 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4277 jint javaThreadState)) | |
4278 { | |
4279 // If new thread states are added in future JDK and VM versions, | |
4280 // this should check if the JDK version is compatible with thread | |
4281 // states supported by the VM. Return NULL if not compatible. | |
4282 // | |
4283 // This function must map the VM java_lang_Thread::ThreadStatus | |
4284 // to the Java thread state that the JDK supports. | |
4285 // | |
4286 | |
4287 typeArrayHandle values_h; | |
4288 switch (javaThreadState) { | |
4289 case JAVA_THREAD_STATE_NEW : { | |
4290 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4291 values_h = typeArrayHandle(THREAD, r); | |
4292 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4293 break; | |
4294 } | |
4295 case JAVA_THREAD_STATE_RUNNABLE : { | |
4296 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4297 values_h = typeArrayHandle(THREAD, r); | |
4298 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4299 break; | |
4300 } | |
4301 case JAVA_THREAD_STATE_BLOCKED : { | |
4302 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4303 values_h = typeArrayHandle(THREAD, r); | |
4304 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4305 break; | |
4306 } | |
4307 case JAVA_THREAD_STATE_WAITING : { | |
4308 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4309 values_h = typeArrayHandle(THREAD, r); | |
4310 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4311 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4312 break; | |
4313 } | |
4314 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4315 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4316 values_h = typeArrayHandle(THREAD, r); | |
4317 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4318 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4319 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4320 break; | |
4321 } | |
4322 case JAVA_THREAD_STATE_TERMINATED : { | |
4323 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4324 values_h = typeArrayHandle(THREAD, r); | |
4325 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4326 break; | |
4327 } | |
4328 default: | |
4329 // Unknown state - probably incompatible JDK version | |
4330 return NULL; | |
4331 } | |
4332 | |
4333 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4334 } | |
4335 JVM_END | |
4336 | |
4337 | |
4338 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4339 jint javaThreadState, | |
4340 jintArray values)) | |
4341 { | |
4342 // If new thread states are added in future JDK and VM versions, | |
4343 // this should check if the JDK version is compatible with thread | |
4344 // states supported by the VM. Return NULL if not compatible. | |
4345 // | |
4346 // This function must map the VM java_lang_Thread::ThreadStatus | |
4347 // to the Java thread state that the JDK supports. | |
4348 // | |
4349 | |
4350 ResourceMark rm; | |
4351 | |
4352 // Check if threads is null | |
4353 if (values == NULL) { | |
4354 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4355 } | |
4356 | |
4357 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4358 typeArrayHandle values_h(THREAD, v); | |
4359 | |
4360 objArrayHandle names_h; | |
4361 switch (javaThreadState) { | |
4362 case JAVA_THREAD_STATE_NEW : { | |
4363 assert(values_h->length() == 1 && | |
4364 values_h->int_at(0) == java_lang_Thread::NEW, | |
4365 "Invalid threadStatus value"); | |
4366 | |
1142 | 4367 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4368 1, /* only 1 substate */ |
4369 CHECK_NULL); | |
4370 names_h = objArrayHandle(THREAD, r); | |
4371 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4372 names_h->obj_at_put(0, name()); | |
4373 break; | |
4374 } | |
4375 case JAVA_THREAD_STATE_RUNNABLE : { | |
4376 assert(values_h->length() == 1 && | |
4377 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4378 "Invalid threadStatus value"); | |
4379 | |
1142 | 4380 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4381 1, /* only 1 substate */ |
4382 CHECK_NULL); | |
4383 names_h = objArrayHandle(THREAD, r); | |
4384 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4385 names_h->obj_at_put(0, name()); | |
4386 break; | |
4387 } | |
4388 case JAVA_THREAD_STATE_BLOCKED : { | |
4389 assert(values_h->length() == 1 && | |
4390 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4391 "Invalid threadStatus value"); | |
4392 | |
1142 | 4393 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4394 1, /* only 1 substate */ |
4395 CHECK_NULL); | |
4396 names_h = objArrayHandle(THREAD, r); | |
4397 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4398 names_h->obj_at_put(0, name()); | |
4399 break; | |
4400 } | |
4401 case JAVA_THREAD_STATE_WAITING : { | |
4402 assert(values_h->length() == 2 && | |
4403 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4404 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4405 "Invalid threadStatus value"); | |
1142 | 4406 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4407 2, /* number of substates */ |
4408 CHECK_NULL); | |
4409 names_h = objArrayHandle(THREAD, r); | |
4410 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4411 CHECK_NULL); | |
4412 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4413 CHECK_NULL); | |
4414 names_h->obj_at_put(0, name0()); | |
4415 names_h->obj_at_put(1, name1()); | |
4416 break; | |
4417 } | |
4418 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4419 assert(values_h->length() == 3 && | |
4420 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4421 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4422 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4423 "Invalid threadStatus value"); | |
1142 | 4424 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4425 3, /* number of substates */ |
4426 CHECK_NULL); | |
4427 names_h = objArrayHandle(THREAD, r); | |
4428 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4429 CHECK_NULL); | |
4430 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4431 CHECK_NULL); | |
4432 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4433 CHECK_NULL); | |
4434 names_h->obj_at_put(0, name0()); | |
4435 names_h->obj_at_put(1, name1()); | |
4436 names_h->obj_at_put(2, name2()); | |
4437 break; | |
4438 } | |
4439 case JAVA_THREAD_STATE_TERMINATED : { | |
4440 assert(values_h->length() == 1 && | |
4441 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4442 "Invalid threadStatus value"); | |
1142 | 4443 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4444 1, /* only 1 substate */ |
4445 CHECK_NULL); | |
4446 names_h = objArrayHandle(THREAD, r); | |
4447 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4448 names_h->obj_at_put(0, name()); | |
4449 break; | |
4450 } | |
4451 default: | |
4452 // Unknown state - probably incompatible JDK version | |
4453 return NULL; | |
4454 } | |
4455 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4456 } | |
4457 JVM_END | |
4458 | |
4459 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4460 { | |
4461 memset(info, 0, sizeof(info_size)); | |
4462 | |
4463 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4464 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4465 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4466 | |
4467 // when we add a new capability in the jvm_version_info struct, we should also | |
4468 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4469 // counter defined in runtimeService.cpp. | |
4470 info->is_attachable = AttachListener::is_attach_supported(); | |
4471 #ifdef KERNEL | |
4472 info->is_kernel_jvm = 1; // true; | |
4473 #else // KERNEL | |
4474 info->is_kernel_jvm = 0; // false; | |
4475 #endif // KERNEL | |
4476 } | |
4477 JVM_END |