Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvm.cpp @ 7176:59c790074993
8003635: NPG: AsynchGetCallTrace broken by Method* virtual call
Summary: Make metaspace::contains be lock free and used to see if something is in metaspace, also compare Method* with vtbl pointer.
Reviewed-by: dholmes, sspitsyn, dcubed, jmasa
author | coleenp |
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date | Wed, 28 Nov 2012 17:50:21 -0500 |
parents | 070d523b96a7 |
children | 1baf7f1e3f23 35431a769282 |
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" | |
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38 #include "oops/method.hpp" |
1972 | 39 #include "prims/jvm.h" |
40 #include "prims/jvm_misc.hpp" | |
41 #include "prims/jvmtiExport.hpp" | |
42 #include "prims/jvmtiThreadState.hpp" | |
43 #include "prims/nativeLookup.hpp" | |
44 #include "prims/privilegedStack.hpp" | |
45 #include "runtime/arguments.hpp" | |
46 #include "runtime/dtraceJSDT.hpp" | |
47 #include "runtime/handles.inline.hpp" | |
48 #include "runtime/init.hpp" | |
49 #include "runtime/interfaceSupport.hpp" | |
50 #include "runtime/java.hpp" | |
51 #include "runtime/javaCalls.hpp" | |
52 #include "runtime/jfieldIDWorkaround.hpp" | |
53 #include "runtime/os.hpp" | |
54 #include "runtime/perfData.hpp" | |
55 #include "runtime/reflection.hpp" | |
56 #include "runtime/vframe.hpp" | |
57 #include "runtime/vm_operations.hpp" | |
58 #include "services/attachListener.hpp" | |
59 #include "services/management.hpp" | |
60 #include "services/threadService.hpp" | |
61 #include "utilities/copy.hpp" | |
62 #include "utilities/defaultStream.hpp" | |
63 #include "utilities/dtrace.hpp" | |
64 #include "utilities/events.hpp" | |
65 #include "utilities/histogram.hpp" | |
66 #include "utilities/top.hpp" | |
67 #include "utilities/utf8.hpp" | |
68 #ifdef TARGET_OS_FAMILY_linux | |
69 # include "jvm_linux.h" | |
70 #endif | |
71 #ifdef TARGET_OS_FAMILY_solaris | |
72 # include "jvm_solaris.h" | |
73 #endif | |
74 #ifdef TARGET_OS_FAMILY_windows | |
75 # include "jvm_windows.h" | |
76 #endif | |
3960 | 77 #ifdef TARGET_OS_FAMILY_bsd |
78 # include "jvm_bsd.h" | |
79 #endif | |
1972 | 80 |
0 | 81 #include <errno.h> |
82 | |
4006 | 83 #ifndef USDT2 |
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84 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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85 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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86 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 87 #endif /* !USDT2 */ |
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88 |
0 | 89 /* |
90 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
91 such ctors and calls MUST NOT come between an oop declaration/init and its | |
92 usage because if objects are move this may cause various memory stomps, bus | |
93 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
94 failures": | |
95 | |
96 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
97 JVMWrapper("JVM_GetClassDeclaredFields"); | |
98 | |
99 // Object address to be held directly in mirror & not visible to GC | |
100 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
101 | |
102 // If this ctor can hit a safepoint, moving objects around, then | |
103 ComplexConstructor foo; | |
104 | |
105 // Boom! mirror may point to JUNK instead of the intended object | |
106 (some dereference of mirror) | |
107 | |
108 // Here's another call that may block for GC, making mirror stale | |
109 MutexLocker ml(some_lock); | |
110 | |
111 // And here's an initializer that can result in a stale oop | |
112 // all in one step. | |
113 oop o = call_that_can_throw_exception(TRAPS); | |
114 | |
115 | |
116 The solution is to keep the oop declaration BELOW the ctor or function | |
117 call that might cause a GC, do another resolve to reassign the oop, or | |
118 consider use of a Handle instead of an oop so there is immunity from object | |
119 motion. But note that the "QUICK" entries below do not have a handlemark | |
120 and thus can only support use of handles passed in. | |
121 */ | |
122 | |
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123 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 124 ResourceMark rm; |
125 int line_number = -1; | |
126 const char * source_file = NULL; | |
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127 const char * trace = "explicit"; |
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128 InstanceKlass* caller = NULL; |
0 | 129 JavaThread* jthread = JavaThread::current(); |
130 if (jthread->has_last_Java_frame()) { | |
131 vframeStream vfst(jthread); | |
132 | |
133 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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134 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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135 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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136 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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137 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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138 |
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139 Method* last_caller = NULL; |
0 | 140 |
141 while (!vfst.at_end()) { | |
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142 Method* m = vfst.method(); |
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143 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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144 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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145 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 146 break; |
147 } | |
148 last_caller = m; | |
149 vfst.next(); | |
150 } | |
151 // if this is called from Class.forName0 and that is called from Class.forName, | |
152 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
153 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
154 bool found_it = false; | |
155 if (!vfst.at_end() && | |
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156 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 157 vfst.method()->name() == vmSymbols::forName0_name()) { |
158 vfst.next(); | |
159 if (!vfst.at_end() && | |
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160 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 161 vfst.method()->name() == vmSymbols::forName_name()) { |
162 vfst.next(); | |
163 found_it = true; | |
164 } | |
165 } else if (last_caller != NULL && | |
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166 last_caller->method_holder()->name() == |
0 | 167 vmSymbols::java_lang_ClassLoader() && |
168 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
169 last_caller->name() == vmSymbols::loadClass_name())) { | |
170 found_it = true; | |
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171 } else if (!vfst.at_end()) { |
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172 if (vfst.method()->is_native()) { |
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173 // JNI call |
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174 found_it = true; |
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175 } |
0 | 176 } |
177 if (found_it && !vfst.at_end()) { | |
178 // found the caller | |
179 caller = vfst.method()->method_holder(); | |
180 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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181 if (line_number == -1) { |
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182 // show method name if it's a native method |
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183 trace = vfst.method()->name_and_sig_as_C_string(); |
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184 } |
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185 Symbol* s = caller->source_file_name(); |
0 | 186 if (s != NULL) { |
187 source_file = s->as_C_string(); | |
188 } | |
189 } | |
190 } | |
191 if (caller != NULL) { | |
192 if (to_class != caller) { | |
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193 const char * from = caller->external_name(); |
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194 const char * to = to_class->external_name(); |
0 | 195 // print in a single call to reduce interleaving between threads |
196 if (source_file != NULL) { | |
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197 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 198 } else { |
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199 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 200 } |
201 } | |
202 } | |
203 } | |
204 | |
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205 void trace_class_resolution(Klass* to_class) { |
0 | 206 EXCEPTION_MARK; |
207 trace_class_resolution_impl(to_class, THREAD); | |
208 if (HAS_PENDING_EXCEPTION) { | |
209 CLEAR_PENDING_EXCEPTION; | |
210 } | |
211 } | |
212 | |
213 // Wrapper to trace JVM functions | |
214 | |
215 #ifdef ASSERT | |
216 class JVMTraceWrapper : public StackObj { | |
217 public: | |
218 JVMTraceWrapper(const char* format, ...) { | |
219 if (TraceJVMCalls) { | |
220 va_list ap; | |
221 va_start(ap, format); | |
222 tty->print("JVM "); | |
223 tty->vprint_cr(format, ap); | |
224 va_end(ap); | |
225 } | |
226 } | |
227 }; | |
228 | |
229 Histogram* JVMHistogram; | |
230 volatile jint JVMHistogram_lock = 0; | |
231 | |
232 class JVMHistogramElement : public HistogramElement { | |
233 public: | |
234 JVMHistogramElement(const char* name); | |
235 }; | |
236 | |
237 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
238 _name = elementName; | |
239 uintx count = 0; | |
240 | |
241 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
242 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
243 count +=1; | |
244 if ( (WarnOnStalledSpinLock > 0) | |
245 && (count % WarnOnStalledSpinLock == 0)) { | |
246 warning("JVMHistogram_lock seems to be stalled"); | |
247 } | |
248 } | |
249 } | |
250 | |
251 if(JVMHistogram == NULL) | |
252 JVMHistogram = new Histogram("JVM Call Counts",100); | |
253 | |
254 JVMHistogram->add_element(this); | |
255 Atomic::dec(&JVMHistogram_lock); | |
256 } | |
257 | |
258 #define JVMCountWrapper(arg) \ | |
259 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
260 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
261 | |
262 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
263 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
264 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
265 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
266 #else | |
267 #define JVMWrapper(arg1) | |
268 #define JVMWrapper2(arg1, arg2) | |
269 #define JVMWrapper3(arg1, arg2, arg3) | |
270 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
271 #endif | |
272 | |
273 | |
274 // Interface version ///////////////////////////////////////////////////////////////////// | |
275 | |
276 | |
277 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
278 return JVM_INTERFACE_VERSION; | |
279 JVM_END | |
280 | |
281 | |
282 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
283 | |
284 | |
285 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
286 JVMWrapper("JVM_CurrentTimeMillis"); | |
287 return os::javaTimeMillis(); | |
288 JVM_END | |
289 | |
290 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
291 JVMWrapper("JVM_NanoTime"); | |
292 return os::javaTimeNanos(); | |
293 JVM_END | |
294 | |
295 | |
296 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
297 jobject dst, jint dst_pos, jint length)) | |
298 JVMWrapper("JVM_ArrayCopy"); | |
299 // Check if we have null pointers | |
300 if (src == NULL || dst == NULL) { | |
301 THROW(vmSymbols::java_lang_NullPointerException()); | |
302 } | |
303 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
304 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
305 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
306 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
307 // Do copy | |
6983 | 308 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 309 JVM_END |
310 | |
311 | |
312 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
313 JavaValue r(T_OBJECT); | |
314 // public synchronized Object put(Object key, Object value); | |
315 HandleMark hm(THREAD); | |
316 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
317 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
318 JavaCalls::call_virtual(&r, | |
319 props, | |
1142 | 320 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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321 vmSymbols::put_name(), |
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322 vmSymbols::object_object_object_signature(), |
0 | 323 key_str, |
324 value_str, | |
325 THREAD); | |
326 } | |
327 | |
328 | |
329 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
330 | |
331 | |
332 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
333 JVMWrapper("JVM_InitProperties"); | |
334 ResourceMark rm; | |
335 | |
336 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
337 | |
338 // System property list includes both user set via -D option and | |
339 // jvm system specific properties. | |
340 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
341 PUTPROP(props, p->key(), p->value()); | |
342 } | |
343 | |
344 // Convert the -XX:MaxDirectMemorySize= command line flag | |
345 // to the sun.nio.MaxDirectMemorySize property. | |
346 // Do this after setting user properties to prevent people | |
347 // from setting the value with a -D option, as requested. | |
348 { | |
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349 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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350 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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351 } else { |
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352 char as_chars[256]; |
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353 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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354 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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355 } |
0 | 356 } |
357 | |
358 // JVM monitoring and management support | |
359 // Add the sun.management.compiler property for the compiler's name | |
360 { | |
361 #undef CSIZE | |
362 #if defined(_LP64) || defined(_WIN64) | |
363 #define CSIZE "64-Bit " | |
364 #else | |
365 #define CSIZE | |
366 #endif // 64bit | |
367 | |
368 #ifdef TIERED | |
369 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
370 #else | |
371 #if defined(COMPILER1) | |
372 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
373 #elif defined(COMPILER2) | |
374 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
375 #else | |
376 const char* compiler_name = ""; | |
377 #endif // compilers | |
378 #endif // TIERED | |
379 | |
380 if (*compiler_name != '\0' && | |
381 (Arguments::mode() != Arguments::_int)) { | |
382 PUTPROP(props, "sun.management.compiler", compiler_name); | |
383 } | |
384 } | |
385 | |
386 return properties; | |
387 JVM_END | |
388 | |
389 | |
390 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
391 | |
392 extern volatile jint vm_created; | |
393 | |
394 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
395 if (vm_created != 0 && (code == 0)) { | |
396 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
397 Universe::run_finalizers_on_exit(); | |
398 } | |
399 before_exit(thread); | |
400 vm_exit(code); | |
401 JVM_END | |
402 | |
403 | |
404 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
405 before_exit(thread); | |
406 vm_exit(code); | |
407 JVM_END | |
408 | |
409 | |
410 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
411 register_on_exit_function(func); | |
412 JVM_END | |
413 | |
414 | |
415 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
416 JVMWrapper("JVM_GC"); | |
417 if (!DisableExplicitGC) { | |
418 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
419 } | |
420 JVM_END | |
421 | |
422 | |
423 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
424 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
425 return Universe::heap()->millis_since_last_gc(); | |
426 JVM_END | |
427 | |
428 | |
429 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
430 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
431 JVM_END | |
432 | |
433 | |
434 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
435 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
436 JVM_END | |
437 | |
438 static inline jlong convert_size_t_to_jlong(size_t val) { | |
439 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
440 NOT_LP64 (return (jlong)val;) | |
441 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
442 } | |
443 | |
444 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
445 JVMWrapper("JVM_TotalMemory"); | |
446 size_t n = Universe::heap()->capacity(); | |
447 return convert_size_t_to_jlong(n); | |
448 JVM_END | |
449 | |
450 | |
451 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
452 JVMWrapper("JVM_FreeMemory"); | |
453 CollectedHeap* ch = Universe::heap(); | |
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454 size_t n; |
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455 { |
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456 MutexLocker x(Heap_lock); |
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457 n = ch->capacity() - ch->used(); |
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458 } |
0 | 459 return convert_size_t_to_jlong(n); |
460 JVM_END | |
461 | |
462 | |
463 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
464 JVMWrapper("JVM_MaxMemory"); | |
465 size_t n = Universe::heap()->max_capacity(); | |
466 return convert_size_t_to_jlong(n); | |
467 JVM_END | |
468 | |
469 | |
470 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
471 JVMWrapper("JVM_ActiveProcessorCount"); | |
472 return os::active_processor_count(); | |
473 JVM_END | |
474 | |
475 | |
476 | |
477 // java.lang.Throwable ////////////////////////////////////////////////////// | |
478 | |
479 | |
480 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
481 JVMWrapper("JVM_FillInStackTrace"); | |
482 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
483 java_lang_Throwable::fill_in_stack_trace(exception); | |
484 JVM_END | |
485 | |
486 | |
487 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
488 JVMWrapper("JVM_PrintStackTrace"); | |
489 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
490 oop exception = JNIHandles::resolve_non_null(receiver); | |
491 oop stream = JNIHandles::resolve_non_null(printable); | |
492 java_lang_Throwable::print_stack_trace(exception, stream); | |
493 JVM_END | |
494 | |
495 | |
496 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
497 JVMWrapper("JVM_GetStackTraceDepth"); | |
498 oop exception = JNIHandles::resolve(throwable); | |
499 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
500 JVM_END | |
501 | |
502 | |
503 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
504 JVMWrapper("JVM_GetStackTraceElement"); | |
505 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
506 oop exception = JNIHandles::resolve(throwable); | |
507 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
508 return JNIHandles::make_local(env, element); | |
509 JVM_END | |
510 | |
511 | |
512 // java.lang.Object /////////////////////////////////////////////// | |
513 | |
514 | |
515 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
516 JVMWrapper("JVM_IHashCode"); | |
517 // as implemented in the classic virtual machine; return 0 if object is NULL | |
518 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
519 JVM_END | |
520 | |
521 | |
522 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
523 JVMWrapper("JVM_MonitorWait"); | |
524 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
525 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
526 if (JvmtiExport::should_post_monitor_wait()) { | |
527 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
528 } | |
529 ObjectSynchronizer::wait(obj, ms, CHECK); | |
530 JVM_END | |
531 | |
532 | |
533 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
534 JVMWrapper("JVM_MonitorNotify"); | |
535 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
536 ObjectSynchronizer::notify(obj, CHECK); | |
537 JVM_END | |
538 | |
539 | |
540 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
541 JVMWrapper("JVM_MonitorNotifyAll"); | |
542 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
543 ObjectSynchronizer::notifyall(obj, CHECK); | |
544 JVM_END | |
545 | |
546 | |
547 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
548 JVMWrapper("JVM_Clone"); | |
549 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
550 const KlassHandle klass (THREAD, obj->klass()); | |
551 JvmtiVMObjectAllocEventCollector oam; | |
552 | |
553 #ifdef ASSERT | |
554 // Just checking that the cloneable flag is set correct | |
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555 if (obj->is_array()) { |
0 | 556 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
557 } else { | |
558 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 559 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 560 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
561 } | |
562 #endif | |
563 | |
564 // Check if class of obj supports the Cloneable interface. | |
565 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
566 if (!klass->is_cloneable()) { | |
567 ResourceMark rm(THREAD); | |
568 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
569 } | |
570 | |
571 // Make shallow object copy | |
572 const int size = obj->size(); | |
573 oop new_obj = NULL; | |
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574 if (obj->is_array()) { |
0 | 575 const int length = ((arrayOop)obj())->length(); |
576 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
577 } else { | |
578 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
579 } | |
580 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
581 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
582 // be suspended in the middle of copying the pointer and end up with parts | |
583 // of two different pointers in the field. Subsequent dereferences will crash. | |
584 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
585 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
586 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
587 // The same is true of StubRoutines::object_copy and the various oop_copy | |
588 // variants, and of the code generated by the inline_native_clone intrinsic. | |
589 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
590 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
591 (size_t)align_object_size(size) / HeapWordsPerLong); | |
592 // Clear the header | |
593 new_obj->init_mark(); | |
594 | |
595 // Store check (mark entire object and let gc sort it out) | |
596 BarrierSet* bs = Universe::heap()->barrier_set(); | |
597 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
598 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
599 | |
600 // Caution: this involves a java upcall, so the clone should be | |
601 // "gc-robust" by this stage. | |
602 if (klass->has_finalizer()) { | |
603 assert(obj->is_instance(), "should be instanceOop"); | |
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604 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 605 } |
606 | |
607 return JNIHandles::make_local(env, oop(new_obj)); | |
608 JVM_END | |
609 | |
610 // java.lang.Compiler //////////////////////////////////////////////////// | |
611 | |
612 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
613 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
614 // functions are all silently ignored unless JVM warnings are printed. | |
615 | |
616 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
617 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
618 JVM_END | |
619 | |
620 | |
621 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
622 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
623 return JNI_FALSE; | |
624 JVM_END | |
625 | |
626 | |
627 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
628 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
629 return JNI_FALSE; | |
630 JVM_END | |
631 | |
632 | |
633 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
634 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
635 return JNI_FALSE; | |
636 JVM_END | |
637 | |
638 | |
639 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
640 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
641 return NULL; | |
642 JVM_END | |
643 | |
644 | |
645 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
646 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
647 JVM_END | |
648 | |
649 | |
650 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
651 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
652 JVM_END | |
653 | |
654 | |
655 | |
656 // Error message support ////////////////////////////////////////////////////// | |
657 | |
658 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
659 JVMWrapper("JVM_GetLastErrorString"); | |
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660 return (jint)os::lasterror(buf, len); |
0 | 661 JVM_END |
662 | |
663 | |
664 // java.io.File /////////////////////////////////////////////////////////////// | |
665 | |
666 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
667 JVMWrapper2("JVM_NativePath (%s)", path); | |
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668 return os::native_path(path); |
0 | 669 JVM_END |
670 | |
671 | |
672 // Misc. class handling /////////////////////////////////////////////////////////// | |
673 | |
674 | |
675 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
676 JVMWrapper("JVM_GetCallerClass"); | |
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677 Klass* k = thread->security_get_caller_class(depth); |
6983 | 678 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 679 JVM_END |
680 | |
681 | |
682 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
683 JVMWrapper("JVM_FindPrimitiveClass"); | |
684 oop mirror = NULL; | |
685 BasicType t = name2type(utf); | |
686 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
687 mirror = Universe::java_mirror(t); | |
688 } | |
689 if (mirror == NULL) { | |
690 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
691 } else { | |
692 return (jclass) JNIHandles::make_local(env, mirror); | |
693 } | |
694 JVM_END | |
695 | |
696 | |
697 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
698 JVMWrapper("JVM_ResolveClass"); | |
699 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
700 JVM_END | |
701 | |
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702 |
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703 // Returns a class loaded by the bootstrap class loader; or null |
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704 // if not found. ClassNotFoundException is not thrown. |
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705 // |
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706 // Rationale behind JVM_FindClassFromBootLoader |
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707 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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708 // b> because of (a) java.dll has a direct dependecy on the unexported |
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709 // private symbol "_JVM_FindClassFromClassLoader@20". |
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710 // c> the launcher cannot use the private symbol as it dynamically opens |
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711 // the entry point, so if something changes, the launcher will fail |
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712 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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713 // stable exported interface. |
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714 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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715 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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716 // JVM_FindClassFromClassLoader and will not be backward compatible |
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717 // with older JDKs. |
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718 // Thus a public/stable exported entry point is the right solution, |
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719 // public here means public in linker semantics, and is exported only |
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720 // to the JDK, and is not intended to be a public API. |
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721 |
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722 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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723 const char* name)) |
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724 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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725 |
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726 // Java libraries should ensure that name is never null... |
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727 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
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728 // It's impossible to create this class; the name cannot fit |
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729 // into the constant pool. |
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730 return NULL; |
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731 } |
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732 |
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733 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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734 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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735 if (k == NULL) { |
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736 return NULL; |
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737 } |
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738 |
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739 if (TraceClassResolution) { |
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740 trace_class_resolution(k); |
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741 } |
6983 | 742 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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743 JVM_END |
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744 |
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745 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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746 jboolean init, jobject loader, |
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747 jboolean throwError)) |
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748 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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749 throwError ? "error" : "exception"); |
388 | 750 // Java libraries should ensure that name is never null... |
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751 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 752 // It's impossible to create this class; the name cannot fit |
753 // into the constant pool. | |
754 if (throwError) { | |
755 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
756 } else { | |
757 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
758 } | |
759 } | |
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760 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 761 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
762 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
763 Handle(), throwError, THREAD); | |
764 | |
765 if (TraceClassResolution && result != NULL) { | |
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766 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 767 } |
768 return result; | |
0 | 769 JVM_END |
770 | |
771 | |
772 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
773 jboolean init, jclass from)) | |
774 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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775 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 776 // It's impossible to create this class; the name cannot fit |
777 // into the constant pool. | |
778 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
779 } | |
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780 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 781 oop from_class_oop = JNIHandles::resolve(from); |
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782 Klass* from_class = (from_class_oop == NULL) |
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783 ? (Klass*)NULL |
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784 : java_lang_Class::as_Klass(from_class_oop); |
0 | 785 oop class_loader = NULL; |
786 oop protection_domain = NULL; | |
787 if (from_class != NULL) { | |
6983 | 788 class_loader = from_class->class_loader(); |
789 protection_domain = from_class->protection_domain(); | |
0 | 790 } |
791 Handle h_loader(THREAD, class_loader); | |
792 Handle h_prot (THREAD, protection_domain); | |
793 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
794 h_prot, true, thread); | |
795 | |
796 if (TraceClassResolution && result != NULL) { | |
797 // this function is generally only used for class loading during verification. | |
798 ResourceMark rm; | |
799 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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800 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 801 const char * from_name = from_class->external_name(); |
0 | 802 |
803 oop mirror = JNIHandles::resolve_non_null(result); | |
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804 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 805 const char * to = to_class->external_name(); |
0 | 806 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
807 } | |
808 | |
809 return result; | |
810 JVM_END | |
811 | |
812 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
813 if (loader.is_null()) { | |
814 return; | |
815 } | |
816 | |
817 // check whether the current caller thread holds the lock or not. | |
818 // If not, increment the corresponding counter | |
819 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
820 ObjectSynchronizer::owner_self) { | |
821 counter->inc(); | |
822 } | |
823 } | |
824 | |
825 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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826 // and JVM_DefineClassWithSourceCond() |
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827 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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828 jobject loader, const jbyte *buf, |
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829 jsize len, jobject pd, const char *source, |
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830 jboolean verify, TRAPS) { |
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831 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 832 |
875
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833 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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834 JavaThread* jt = (JavaThread*) THREAD; |
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835 |
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836 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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837 ClassLoader::perf_define_appclass_selftime(), |
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838 ClassLoader::perf_define_appclasses(), |
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839 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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840 jt->get_thread_stat()->perf_timers_addr(), |
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841 PerfClassTraceTime::DEFINE_CLASS); |
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842 |
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843 if (UsePerfData) { |
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844 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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845 } |
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846 |
0 | 847 // Since exceptions can be thrown, class initialization can take place |
848 // if name is NULL no check for class name in .class stream has to be made. | |
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849 TempNewSymbol class_name = NULL; |
0 | 850 if (name != NULL) { |
851 const int str_len = (int)strlen(name); | |
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852 if (str_len > Symbol::max_length()) { |
0 | 853 // It's impossible to create this class; the name cannot fit |
854 // into the constant pool. | |
855 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
856 } | |
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857 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 858 } |
859 | |
860 ResourceMark rm(THREAD); | |
861 ClassFileStream st((u1*) buf, len, (char *)source); | |
862 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
863 if (UsePerfData) { | |
864 is_lock_held_by_thread(class_loader, | |
865 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
866 THREAD); | |
867 } | |
868 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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869 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 870 protection_domain, &st, |
973
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871 verify != 0, |
0 | 872 CHECK_NULL); |
873 | |
874 if (TraceClassResolution && k != NULL) { | |
875 trace_class_resolution(k); | |
876 } | |
877 | |
6983 | 878 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 879 } |
880 | |
881 | |
882 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
883 JVMWrapper2("JVM_DefineClass %s", name); | |
884 | |
973
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885 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 886 JVM_END |
887 | |
888 | |
889 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
890 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
891 | |
973
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892 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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893 JVM_END |
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894 |
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895 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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896 jobject loader, const jbyte *buf, |
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897 jsize len, jobject pd, |
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898 const char *source, jboolean verify)) |
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899 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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900 |
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901 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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902 JVM_END |
0 | 903 |
904 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
905 JVMWrapper("JVM_FindLoadedClass"); | |
906 ResourceMark rm(THREAD); | |
907 | |
908 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
909 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
910 | |
911 const char* str = java_lang_String::as_utf8_string(string()); | |
912 // Sanity check, don't expect null | |
913 if (str == NULL) return NULL; | |
914 | |
915 const int str_len = (int)strlen(str); | |
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916 if (str_len > Symbol::max_length()) { |
0 | 917 // It's impossible to create this class; the name cannot fit |
918 // into the constant pool. | |
919 return NULL; | |
920 } | |
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921 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 922 |
923 // Security Note: | |
924 // The Java level wrapper will perform the necessary security check allowing | |
925 // us to pass the NULL as the initiating class loader. | |
926 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
927 if (UsePerfData) { | |
928 is_lock_held_by_thread(h_loader, | |
929 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
930 THREAD); | |
931 } | |
932 | |
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933 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 934 h_loader, |
935 Handle(), | |
936 CHECK_NULL); | |
937 | |
938 return (k == NULL) ? NULL : | |
6983 | 939 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 940 JVM_END |
941 | |
942 | |
943 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
944 | |
945 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
946 assert (cls != NULL, "illegal class"); | |
947 JVMWrapper("JVM_GetClassName"); | |
948 JvmtiVMObjectAllocEventCollector oam; | |
949 ResourceMark rm(THREAD); | |
950 const char* name; | |
951 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
952 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
953 } else { | |
954 // Consider caching interned string in Klass | |
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955 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 956 assert(k->is_klass(), "just checking"); |
6983 | 957 name = k->external_name(); |
0 | 958 } |
959 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
960 return (jstring) JNIHandles::make_local(env, result); | |
961 JVM_END | |
962 | |
963 | |
964 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
965 JVMWrapper("JVM_GetClassInterfaces"); | |
966 JvmtiVMObjectAllocEventCollector oam; | |
967 oop mirror = JNIHandles::resolve_non_null(cls); | |
968 | |
969 // Special handling for primitive objects | |
970 if (java_lang_Class::is_primitive(mirror)) { | |
971 // Primitive objects does not have any interfaces | |
1142 | 972 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 973 return (jobjectArray) JNIHandles::make_local(env, r); |
974 } | |
975 | |
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976 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 977 // Figure size of result array |
978 int size; | |
979 if (klass->oop_is_instance()) { | |
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980 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 981 } else { |
982 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
983 size = 2; | |
984 } | |
985 | |
986 // Allocate result array | |
1142 | 987 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 988 objArrayHandle result (THREAD, r); |
989 // Fill in result | |
990 if (klass->oop_is_instance()) { | |
991 // Regular instance klass, fill in all local interfaces | |
992 for (int index = 0; index < size; index++) { | |
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993 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 994 result->obj_at_put(index, k->java_mirror()); |
0 | 995 } |
996 } else { | |
997 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 998 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
999 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1000 } |
1001 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1002 JVM_END | |
1003 | |
1004 | |
1005 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1006 JVMWrapper("JVM_GetClassLoader"); | |
1007 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1008 return NULL; | |
1009 } | |
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1010 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1011 oop loader = k->class_loader(); |
0 | 1012 return JNIHandles::make_local(env, loader); |
1013 JVM_END | |
1014 | |
1015 | |
1016 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1017 JVMWrapper("JVM_IsInterface"); | |
1018 oop mirror = JNIHandles::resolve_non_null(cls); | |
1019 if (java_lang_Class::is_primitive(mirror)) { | |
1020 return JNI_FALSE; | |
1021 } | |
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1022 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1023 jboolean result = k->is_interface(); |
1024 assert(!result || k->oop_is_instance(), | |
0 | 1025 "all interfaces are instance types"); |
1026 // The compiler intrinsic for isInterface tests the | |
1027 // Klass::_access_flags bits in the same way. | |
1028 return result; | |
1029 JVM_END | |
1030 | |
1031 | |
1032 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1033 JVMWrapper("JVM_GetClassSigners"); | |
1034 JvmtiVMObjectAllocEventCollector oam; | |
1035 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1036 // There are no signers for primitive types | |
1037 return NULL; | |
1038 } | |
1039 | |
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1040 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1041 objArrayOop signers = NULL; |
6983 | 1042 if (k->oop_is_instance()) { |
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1043 signers = InstanceKlass::cast(k)->signers(); |
0 | 1044 } |
1045 | |
1046 // If there are no signers set in the class, or if the class | |
1047 // is an array, return NULL. | |
1048 if (signers == NULL) return NULL; | |
1049 | |
1050 // copy of the signers array | |
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1051 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1052 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1053 for (int index = 0; index < signers->length(); index++) { | |
1054 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1055 } | |
1056 | |
1057 // return the copy | |
1058 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1059 JVM_END | |
1060 | |
1061 | |
1062 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1063 JVMWrapper("JVM_SetClassSigners"); | |
1064 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1065 // This call is ignored for primitive types and arrays. | |
1066 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1067 // be called with an array. Only the bootstrap loader creates arrays. | |
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1068 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1069 if (k->oop_is_instance()) { |
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1070 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
0 | 1071 } |
1072 } | |
1073 JVM_END | |
1074 | |
1075 | |
1076 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1077 JVMWrapper("JVM_GetProtectionDomain"); | |
1078 if (JNIHandles::resolve(cls) == NULL) { | |
1079 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1080 } | |
1081 | |
1082 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1083 // Primitive types does not have a protection domain. | |
1084 return NULL; | |
1085 } | |
1086 | |
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1087 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1088 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
0 | 1089 JVM_END |
1090 | |
1091 | |
1092 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1093 // still defined in core libraries as of 1.5. | |
1094 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1095 JVMWrapper("JVM_SetProtectionDomain"); | |
1096 if (JNIHandles::resolve(cls) == NULL) { | |
1097 THROW(vmSymbols::java_lang_NullPointerException()); | |
1098 } | |
1099 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1100 // Call is ignored for primitive types | |
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1101 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1102 |
1103 // cls won't be an array, as this called only from ClassLoader.defineClass | |
6983 | 1104 if (k->oop_is_instance()) { |
0 | 1105 oop pd = JNIHandles::resolve(protection_domain); |
1106 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1107 InstanceKlass::cast(k)->set_protection_domain(pd); |
0 | 1108 } |
1109 } | |
1110 JVM_END | |
1111 | |
1112 | |
1113 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1114 JVMWrapper("JVM_DoPrivileged"); | |
1115 | |
1116 if (action == NULL) { | |
1117 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1118 } | |
1119 | |
1120 // Stack allocated list of privileged stack elements | |
1121 PrivilegedElement pi; | |
1122 | |
1123 // Check that action object understands "Object run()" | |
1124 Handle object (THREAD, JNIHandles::resolve(action)); | |
1125 | |
1126 // get run() method | |
6983 | 1127 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1128 vmSymbols::run_method_name(), |
1129 vmSymbols::void_object_signature()); | |
1130 methodHandle m (THREAD, m_oop); | |
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1131 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1132 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1133 } | |
1134 | |
1135 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1136 vframeStream vfst(thread); | |
1137 vfst.security_get_caller_frame(1); | |
1138 | |
1139 if (!vfst.at_end()) { | |
1140 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1141 thread->set_privileged_stack_top(&pi); | |
1142 } | |
1143 | |
1144 | |
1145 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1146 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1147 Handle pending_exception; | |
1148 JavaValue result(T_OBJECT); | |
1149 JavaCallArguments args(object); | |
1150 JavaCalls::call(&result, m, &args, THREAD); | |
1151 | |
1152 // done with action, remove ourselves from the list | |
1153 if (!vfst.at_end()) { | |
1154 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1155 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1156 } | |
1157 | |
1158 if (HAS_PENDING_EXCEPTION) { | |
1159 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1160 CLEAR_PENDING_EXCEPTION; | |
1161 | |
1142 | 1162 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1163 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1164 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1165 JavaCallArguments args(pending_exception); | |
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1166 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1167 vmSymbols::exception_void_signature(), |
0 | 1168 &args); |
1169 } | |
1170 } | |
1171 | |
1172 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1173 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1174 JVM_END | |
1175 | |
1176 | |
1177 // Returns the inherited_access_control_context field of the running thread. | |
1178 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1179 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1180 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1181 return JNIHandles::make_local(env, result); | |
1182 JVM_END | |
1183 | |
1184 class RegisterArrayForGC { | |
1185 private: | |
1186 JavaThread *_thread; | |
1187 public: | |
1188 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1189 _thread = thread; | |
1190 _thread->register_array_for_gc(array); | |
1191 } | |
1192 | |
1193 ~RegisterArrayForGC() { | |
1194 _thread->register_array_for_gc(NULL); | |
1195 } | |
1196 }; | |
1197 | |
1198 | |
1199 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1200 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1201 if (!UsePrivilegedStack) return NULL; | |
1202 | |
1203 ResourceMark rm(THREAD); | |
1204 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1205 JvmtiVMObjectAllocEventCollector oam; | |
1206 | |
1207 // count the protection domains on the execution stack. We collapse | |
1208 // duplicate consecutive protection domains into a single one, as | |
1209 // well as stopping when we hit a privileged frame. | |
1210 | |
1211 // Use vframeStream to iterate through Java frames | |
1212 vframeStream vfst(thread); | |
1213 | |
1214 oop previous_protection_domain = NULL; | |
1215 Handle privileged_context(thread, NULL); | |
1216 bool is_privileged = false; | |
1217 oop protection_domain = NULL; | |
1218 | |
1219 for(; !vfst.at_end(); vfst.next()) { | |
1220 // get method of frame | |
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1221 Method* method = vfst.method(); |
0 | 1222 intptr_t* frame_id = vfst.frame_id(); |
1223 | |
1224 // check the privileged frames to see if we have a match | |
1225 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1226 // this frame is privileged | |
1227 is_privileged = true; | |
1228 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1229 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1230 } else { | |
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1231 protection_domain = method->method_holder()->protection_domain(); |
0 | 1232 } |
1233 | |
1234 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1235 local_array->push(protection_domain); | |
1236 previous_protection_domain = protection_domain; | |
1237 } | |
1238 | |
1239 if (is_privileged) break; | |
1240 } | |
1241 | |
1242 | |
1243 // either all the domains on the stack were system domains, or | |
1244 // we had a privileged system domain | |
1245 if (local_array->is_empty()) { | |
1246 if (is_privileged && privileged_context.is_null()) return NULL; | |
1247 | |
1248 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1249 return JNIHandles::make_local(env, result); | |
1250 } | |
1251 | |
1252 // the resource area must be registered in case of a gc | |
1253 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1254 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1255 local_array->length(), CHECK_NULL); |
1256 objArrayHandle h_context(thread, context); | |
1257 for (int index = 0; index < local_array->length(); index++) { | |
1258 h_context->obj_at_put(index, local_array->at(index)); | |
1259 } | |
1260 | |
1261 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1262 | |
1263 return JNIHandles::make_local(env, result); | |
1264 JVM_END | |
1265 | |
1266 | |
1267 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1268 JVMWrapper("JVM_IsArrayClass"); | |
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1269 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1270 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1271 JVM_END |
1272 | |
1273 | |
1274 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1275 JVMWrapper("JVM_IsPrimitiveClass"); | |
1276 oop mirror = JNIHandles::resolve_non_null(cls); | |
1277 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1278 JVM_END | |
1279 | |
1280 | |
1281 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1282 JVMWrapper("JVM_GetComponentType"); | |
1283 oop mirror = JNIHandles::resolve_non_null(cls); | |
1284 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1285 return (jclass) JNIHandles::make_local(env, result); | |
1286 JVM_END | |
1287 | |
1288 | |
1289 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1290 JVMWrapper("JVM_GetClassModifiers"); | |
1291 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1292 // Primitive type | |
1293 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1294 } | |
1295 | |
6983 | 1296 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1297 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1298 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1299 return k->modifier_flags(); | |
1300 JVM_END | |
1301 | |
1302 | |
1303 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1304 | |
1305 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1306 JvmtiVMObjectAllocEventCollector oam; | |
1307 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1308 // of an InstanceKlass |
0 | 1309 |
1310 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1311 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1312 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1313 return (jobjectArray)JNIHandles::make_local(env, result); |
1314 } | |
1315 | |
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1316 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1317 InnerClassesIterator iter(k); |
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1318 |
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1319 if (iter.length() == 0) { |
0 | 1320 // Neither an inner nor outer class |
1142 | 1321 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1322 return (jobjectArray)JNIHandles::make_local(env, result); |
1323 } | |
1324 | |
1325 // find inner class info | |
1326 constantPoolHandle cp(thread, k->constants()); | |
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1327 int length = iter.length(); |
0 | 1328 |
1329 // Allocate temp. result array | |
1142 | 1330 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1331 objArrayHandle result (THREAD, r); |
1332 int members = 0; | |
1333 | |
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1334 for (; !iter.done(); iter.next()) { |
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1335 int ioff = iter.inner_class_info_index(); |
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1336 int ooff = iter.outer_class_info_index(); |
0 | 1337 |
1338 if (ioff != 0 && ooff != 0) { | |
1339 // Check to see if the name matches the class we're looking for | |
1340 // before attempting to find the class. | |
1341 if (cp->klass_name_at_matches(k, ooff)) { | |
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1342 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1343 if (outer_klass == k()) { |
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1344 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1345 instanceKlassHandle inner_klass (THREAD, ik); |
1346 | |
1347 // Throws an exception if outer klass has not declared k as | |
1348 // an inner klass | |
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1349 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1350 |
1351 result->obj_at_put(members, inner_klass->java_mirror()); | |
1352 members++; | |
1353 } | |
1354 } | |
1355 } | |
1356 } | |
1357 | |
1358 if (members != length) { | |
1359 // Return array of right length | |
1142 | 1360 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1361 for(int i = 0; i < members; i++) { |
1362 res->obj_at_put(i, result->obj_at(i)); | |
1363 } | |
1364 return (jobjectArray)JNIHandles::make_local(env, res); | |
1365 } | |
1366 | |
1367 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1368 JVM_END | |
1369 | |
1370 | |
1371 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1372 { |
0 | 1373 // ofClass is a reference to a java_lang_Class object. |
1374 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1375 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1376 return NULL; |
1377 } | |
1378 | |
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1379 bool inner_is_member = false; |
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1380 Klass* outer_klass |
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1381 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1382 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1383 if (outer_klass == NULL) return NULL; // already a top-level class |
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1384 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1385 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1386 } |
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1387 JVM_END |
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1388 |
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1389 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1390 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1391 bool* inner_is_member, |
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1392 TRAPS) { |
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1393 Thread* thread = THREAD; |
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1394 InnerClassesIterator iter(k); |
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1395 if (iter.length() == 0) { |
0 | 1396 // No inner class info => no declaring class |
1397 return NULL; | |
1398 } | |
1399 | |
1400 constantPoolHandle i_cp(thread, k->constants()); | |
1401 | |
1402 bool found = false; | |
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1403 Klass* ok; |
0 | 1404 instanceKlassHandle outer_klass; |
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1405 *inner_is_member = false; |
0 | 1406 |
1407 // Find inner_klass attribute | |
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1408 for (; !iter.done() && !found; iter.next()) { |
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1409 int ioff = iter.inner_class_info_index(); |
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1410 int ooff = iter.outer_class_info_index(); |
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1411 int noff = iter.inner_name_index(); |
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1412 if (ioff != 0) { |
0 | 1413 // Check to see if the name matches the class we're looking for |
1414 // before attempting to find the class. | |
1415 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1416 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1417 found = (k() == inner_klass); |
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1418 if (found && ooff != 0) { |
0 | 1419 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1420 outer_klass = instanceKlassHandle(thread, ok); | |
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1421 *inner_is_member = true; |
0 | 1422 } |
1423 } | |
1424 } | |
1425 } | |
1426 | |
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1427 if (found && outer_klass.is_null()) { |
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1428 // It may be anonymous; try for that. |
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1429 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1430 if (encl_method_class_idx != 0) { |
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1431 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1432 outer_klass = instanceKlassHandle(thread, ok); |
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1433 *inner_is_member = false; |
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1434 } |
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1435 } |
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1436 |
0 | 1437 // If no inner class attribute found for this class. |
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1438 if (outer_klass.is_null()) return NULL; |
0 | 1439 |
1440 // Throws an exception if outer klass has not declared k as an inner klass | |
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1441 // We need evidence that each klass knows about the other, or else |
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1442 // the system could allow a spoof of an inner class to gain access rights. |
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1443 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1444 return outer_klass(); |
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1445 } |
0 | 1446 |
1447 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1448 assert (cls != NULL, "illegal class"); | |
1449 JVMWrapper("JVM_GetClassSignature"); | |
1450 JvmtiVMObjectAllocEventCollector oam; | |
1451 ResourceMark rm(THREAD); | |
1452 // Return null for arrays and primatives | |
1453 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1454 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1455 if (k->oop_is_instance()) { |
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1456 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1457 if (sym == NULL) return NULL; |
0 | 1458 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1459 return (jstring) JNIHandles::make_local(env, str()); | |
1460 } | |
1461 } | |
1462 return NULL; | |
1463 JVM_END | |
1464 | |
1465 | |
1466 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1467 assert (cls != NULL, "illegal class"); | |
1468 JVMWrapper("JVM_GetClassAnnotations"); | |
1469 ResourceMark rm(THREAD); | |
1470 // Return null for arrays and primitives | |
1471 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1472 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1473 if (k->oop_is_instance()) { |
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1474 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1475 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1476 } |
1477 } | |
1478 return NULL; | |
1479 JVM_END | |
1480 | |
1481 | |
1482 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
1483 assert(field != NULL, "illegal field"); | |
1484 JVMWrapper("JVM_GetFieldAnnotations"); | |
1485 | |
1486 // some of this code was adapted from from jni_FromReflectedField | |
1487 | |
1488 // field is a handle to a java.lang.reflect.Field object | |
1489 oop reflected = JNIHandles::resolve_non_null(field); | |
1490 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1491 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1492 int slot = java_lang_reflect_Field::slot(reflected); |
1493 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1494 | |
1495 fieldDescriptor fd; | |
1496 KlassHandle kh(THREAD, k); | |
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1497 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1498 |
1499 if (modifiers & JVM_ACC_STATIC) { | |
1500 // for static fields we only look in the current class | |
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1501 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1502 assert(false, "cannot find static field"); |
1503 return NULL; // robustness | |
1504 } | |
1505 } else { | |
1506 // for instance fields we start with the current class and work | |
1507 // our way up through the superclass chain | |
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1508 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1509 assert(false, "cannot find instance field"); |
1510 return NULL; // robustness | |
1511 } | |
1512 } | |
1513 | |
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1514 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1515 JVM_END |
1516 | |
1517 | |
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1518 static Method* jvm_get_method_common(jobject method, TRAPS) { |
0 | 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 } | |
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1534 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1535 |
1536 KlassHandle kh(THREAD, k); | |
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1537 Method* m = InstanceKlass::cast(kh())->method_with_idnum(slot); |
0 | 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 | |
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1551 Method* m = jvm_get_method_common(method, CHECK_NULL); |
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1552 return (jbyteArray) JNIHandles::make_local(env, |
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1553 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1554 JVM_END |
1555 | |
1556 | |
1557 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1558 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1559 | |
1560 // method is a handle to a java.lang.reflect.Method object | |
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1561 Method* m = jvm_get_method_common(method, CHECK_NULL); |
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1562 return (jbyteArray) JNIHandles::make_local(env, |
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1563 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1564 JVM_END |
1565 | |
1566 | |
1567 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1568 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1569 | |
1570 // method is a handle to a java.lang.reflect.Method object | |
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1571 Method* m = jvm_get_method_common(method, CHECK_NULL); |
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1572 return (jbyteArray) JNIHandles::make_local(env, |
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1573 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1574 JVM_END |
1575 | |
1576 | |
1577 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1578 | |
1579 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1580 { | |
1581 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1582 JvmtiVMObjectAllocEventCollector oam; | |
1583 | |
1584 // Exclude primitive types and array types | |
1585 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1586 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1587 // Return empty array |
1142 | 1588 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1589 return (jobjectArray) JNIHandles::make_local(env, res); |
1590 } | |
1591 | |
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1592 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1593 constantPoolHandle cp(THREAD, k->constants()); |
1594 | |
1595 // Ensure class is linked | |
1596 k->link_class(CHECK_NULL); | |
1597 | |
1598 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1599 bool skip_backtrace = false; | |
1600 | |
1601 // Allocate result | |
1602 int num_fields; | |
1603 | |
1604 if (publicOnly) { | |
1605 num_fields = 0; | |
3938 | 1606 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1607 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1608 } |
1609 } else { | |
3938 | 1610 num_fields = k->java_fields_count(); |
0 | 1611 |
1142 | 1612 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1613 num_fields--; |
1614 skip_backtrace = true; | |
1615 } | |
1616 } | |
1617 | |
1142 | 1618 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1619 objArrayHandle result (THREAD, r); |
1620 | |
1621 int out_idx = 0; | |
1622 fieldDescriptor fd; | |
3938 | 1623 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1624 if (skip_backtrace) { |
1625 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1626 int offset = fs.offset(); |
0 | 1627 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1628 } | |
1629 | |
3938 | 1630 if (!publicOnly || fs.access_flags().is_public()) { |
1631 fd.initialize(k(), fs.index()); | |
0 | 1632 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1633 result->obj_at_put(out_idx, field); | |
1634 ++out_idx; | |
1635 } | |
1636 } | |
1637 assert(out_idx == num_fields, "just checking"); | |
1638 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1639 } | |
1640 JVM_END | |
1641 | |
1642 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1643 { | |
1644 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1645 JvmtiVMObjectAllocEventCollector oam; | |
1646 | |
1647 // Exclude primitive types and array types | |
1648 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1649 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1650 // Return empty array |
1142 | 1651 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1652 return (jobjectArray) JNIHandles::make_local(env, res); |
1653 } | |
1654 | |
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1655 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1656 |
1657 // Ensure class is linked | |
1658 k->link_class(CHECK_NULL); | |
1659 | |
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1660 Array<Method*>* methods = k->methods(); |
0 | 1661 int methods_length = methods->length(); |
1662 int num_methods = 0; | |
1663 | |
1664 int i; | |
1665 for (i = 0; i < methods_length; i++) { | |
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1666 methodHandle method(THREAD, methods->at(i)); |
0 | 1667 if (!method->is_initializer()) { |
1668 if (!publicOnly || method->is_public()) { | |
1669 ++num_methods; | |
1670 } | |
1671 } | |
1672 } | |
1673 | |
1674 // Allocate result | |
1142 | 1675 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1676 objArrayHandle result (THREAD, r); |
1677 | |
1678 int out_idx = 0; | |
1679 for (i = 0; i < methods_length; i++) { | |
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1680 methodHandle method(THREAD, methods->at(i)); |
0 | 1681 if (!method->is_initializer()) { |
1682 if (!publicOnly || method->is_public()) { | |
1683 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1684 result->obj_at_put(out_idx, m); | |
1685 ++out_idx; | |
1686 } | |
1687 } | |
1688 } | |
1689 assert(out_idx == num_methods, "just checking"); | |
1690 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1691 } | |
1692 JVM_END | |
1693 | |
1694 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1695 { | |
1696 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1697 JvmtiVMObjectAllocEventCollector oam; | |
1698 | |
1699 // Exclude primitive types and array types | |
1700 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1701 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1702 // Return empty array |
1142 | 1703 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1704 return (jobjectArray) JNIHandles::make_local(env, res); |
1705 } | |
1706 | |
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1707 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1708 |
1709 // Ensure class is linked | |
1710 k->link_class(CHECK_NULL); | |
1711 | |
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1712 Array<Method*>* methods = k->methods(); |
0 | 1713 int methods_length = methods->length(); |
1714 int num_constructors = 0; | |
1715 | |
1716 int i; | |
1717 for (i = 0; i < methods_length; i++) { | |
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1718 methodHandle method(THREAD, methods->at(i)); |
0 | 1719 if (method->is_initializer() && !method->is_static()) { |
1720 if (!publicOnly || method->is_public()) { | |
1721 ++num_constructors; | |
1722 } | |
1723 } | |
1724 } | |
1725 | |
1726 // Allocate result | |
1142 | 1727 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1728 objArrayHandle result(THREAD, r); |
1729 | |
1730 int out_idx = 0; | |
1731 for (i = 0; i < methods_length; i++) { | |
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1732 methodHandle method(THREAD, methods->at(i)); |
0 | 1733 if (method->is_initializer() && !method->is_static()) { |
1734 if (!publicOnly || method->is_public()) { | |
1735 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1736 result->obj_at_put(out_idx, m); | |
1737 ++out_idx; | |
1738 } | |
1739 } | |
1740 } | |
1741 assert(out_idx == num_constructors, "just checking"); | |
1742 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1743 } | |
1744 JVM_END | |
1745 | |
1746 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1747 { | |
1748 JVMWrapper("JVM_GetClassAccessFlags"); | |
1749 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1750 // Primitive type | |
1751 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1752 } | |
1753 | |
6983 | 1754 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1755 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1756 } | |
1757 JVM_END | |
1758 | |
1759 | |
1760 // Constant pool access ////////////////////////////////////////////////////////// | |
1761 | |
1762 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1763 { | |
1764 JVMWrapper("JVM_GetClassConstantPool"); | |
1765 JvmtiVMObjectAllocEventCollector oam; | |
1766 | |
1767 // Return null for primitives and arrays | |
1768 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1769 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1770 if (k->oop_is_instance()) { |
0 | 1771 instanceKlassHandle k_h(THREAD, k); |
1772 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1773 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1774 return JNIHandles::make_local(jcp()); |
1775 } | |
1776 } | |
1777 return NULL; | |
1778 } | |
1779 JVM_END | |
1780 | |
1781 | |
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1782 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1783 { |
1784 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1785 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1786 return cp->length(); |
1787 } | |
1788 JVM_END | |
1789 | |
1790 | |
1791 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
1792 if (!cp->is_within_bounds(index)) { | |
1793 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
1794 } | |
1795 } | |
1796 | |
1797 | |
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1798 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1799 { |
1800 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1801 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1802 bounds_check(cp, index, CHECK_NULL); |
1803 constantTag tag = cp->tag_at(index); | |
1804 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1805 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1806 } | |
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1807 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1808 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1809 } |
1810 JVM_END | |
1811 | |
1812 | |
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1813 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1814 { |
1815 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1816 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1817 bounds_check(cp, index, CHECK_NULL); |
1818 constantTag tag = cp->tag_at(index); | |
1819 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1820 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1821 } | |
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1822 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 1823 if (k == NULL) return NULL; |
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1824 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1825 } |
1826 JVM_END | |
1827 | |
1828 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1829 constantTag tag = cp->tag_at(index); | |
1830 if (!tag.is_method() && !tag.is_interface_method()) { | |
1831 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1832 } | |
1833 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1834 Klass* k_o; |
0 | 1835 if (force_resolution) { |
1836 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1837 } else { | |
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1838 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 1839 if (k_o == NULL) return NULL; |
1840 } | |
1841 instanceKlassHandle k(THREAD, k_o); | |
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1842 Symbol* name = cp->uncached_name_ref_at(index); |
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1843 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1844 methodHandle m (THREAD, k->find_method(name, sig)); |
1845 if (m.is_null()) { | |
1846 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1847 } | |
1848 oop method; | |
1849 if (!m->is_initializer() || m->is_static()) { | |
1850 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1851 } else { | |
1852 method = Reflection::new_constructor(m, CHECK_NULL); | |
1853 } | |
1854 return JNIHandles::make_local(method); | |
1855 } | |
1856 | |
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1857 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1858 { |
1859 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
1860 JvmtiVMObjectAllocEventCollector oam; | |
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1861 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1862 bounds_check(cp, index, CHECK_NULL); |
1863 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
1864 return res; | |
1865 } | |
1866 JVM_END | |
1867 | |
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1868 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1869 { |
1870 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
1871 JvmtiVMObjectAllocEventCollector oam; | |
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1872 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1873 bounds_check(cp, index, CHECK_NULL); |
1874 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
1875 return res; | |
1876 } | |
1877 JVM_END | |
1878 | |
1879 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1880 constantTag tag = cp->tag_at(index); | |
1881 if (!tag.is_field()) { | |
1882 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1883 } | |
1884 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1885 Klass* k_o; |
0 | 1886 if (force_resolution) { |
1887 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1888 } else { | |
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1889 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 1890 if (k_o == NULL) return NULL; |
1891 } | |
1892 instanceKlassHandle k(THREAD, k_o); | |
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1893 Symbol* name = cp->uncached_name_ref_at(index); |
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1894 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1895 fieldDescriptor fd; |
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1896 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 1897 if (target_klass == NULL) { |
1898 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
1899 } | |
1900 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
1901 return JNIHandles::make_local(field); | |
1902 } | |
1903 | |
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1904 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 1905 { |
1906 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
1907 JvmtiVMObjectAllocEventCollector oam; | |
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1908 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1909 bounds_check(cp, index, CHECK_NULL); |
1910 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
1911 return res; | |
1912 } | |
1913 JVM_END | |
1914 | |
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1915 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1916 { |
1917 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
1918 JvmtiVMObjectAllocEventCollector oam; | |
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1919 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1920 bounds_check(cp, index, CHECK_NULL); |
1921 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
1922 return res; | |
1923 } | |
1924 JVM_END | |
1925 | |
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1926 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1927 { |
1928 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
1929 JvmtiVMObjectAllocEventCollector oam; | |
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1930 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1931 bounds_check(cp, index, CHECK_NULL); |
1932 constantTag tag = cp->tag_at(index); | |
1933 if (!tag.is_field_or_method()) { | |
1934 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1935 } | |
1936 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1937 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1938 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1939 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 1940 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 1941 objArrayHandle dest(THREAD, dest_o); |
1942 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
1943 dest->obj_at_put(0, str()); | |
1944 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
1945 dest->obj_at_put(1, str()); | |
1946 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
1947 dest->obj_at_put(2, str()); | |
1948 return (jobjectArray) JNIHandles::make_local(dest()); | |
1949 } | |
1950 JVM_END | |
1951 | |
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1952 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1953 { |
1954 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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1955 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1956 bounds_check(cp, index, CHECK_0); |
1957 constantTag tag = cp->tag_at(index); | |
1958 if (!tag.is_int()) { | |
1959 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1960 } | |
1961 return cp->int_at(index); | |
1962 } | |
1963 JVM_END | |
1964 | |
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1965 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1966 { |
1967 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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1968 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1969 bounds_check(cp, index, CHECK_(0L)); |
1970 constantTag tag = cp->tag_at(index); | |
1971 if (!tag.is_long()) { | |
1972 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1973 } | |
1974 return cp->long_at(index); | |
1975 } | |
1976 JVM_END | |
1977 | |
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1978 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1979 { |
1980 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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1981 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1982 bounds_check(cp, index, CHECK_(0.0f)); |
1983 constantTag tag = cp->tag_at(index); | |
1984 if (!tag.is_float()) { | |
1985 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1986 } | |
1987 return cp->float_at(index); | |
1988 } | |
1989 JVM_END | |
1990 | |
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1991 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1992 { |
1993 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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1994 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1995 bounds_check(cp, index, CHECK_(0.0)); |
1996 constantTag tag = cp->tag_at(index); | |
1997 if (!tag.is_double()) { | |
1998 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1999 } | |
2000 return cp->double_at(index); | |
2001 } | |
2002 JVM_END | |
2003 | |
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2004 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2005 { |
2006 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2007 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2008 bounds_check(cp, index, CHECK_NULL); |
2009 constantTag tag = cp->tag_at(index); | |
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2010 if (!tag.is_string()) { |
0 | 2011 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2012 } | |
2013 oop str = cp->string_at(index, CHECK_NULL); | |
2014 return (jstring) JNIHandles::make_local(str); | |
2015 } | |
2016 JVM_END | |
2017 | |
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2018 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2019 { |
2020 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2021 JvmtiVMObjectAllocEventCollector oam; | |
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2022 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2023 bounds_check(cp, index, CHECK_NULL); |
2024 constantTag tag = cp->tag_at(index); | |
2025 if (!tag.is_symbol()) { | |
2026 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2027 } | |
2177
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2028 Symbol* sym = cp->symbol_at(index); |
0 | 2029 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2030 return (jstring) JNIHandles::make_local(str()); | |
2031 } | |
2032 JVM_END | |
2033 | |
2034 | |
2035 // Assertion support. ////////////////////////////////////////////////////////// | |
2036 | |
2037 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2038 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2039 assert(cls != NULL, "bad class"); | |
2040 | |
2041 oop r = JNIHandles::resolve(cls); | |
2042 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2043 if (java_lang_Class::is_primitive(r)) return false; | |
2044 | |
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2045 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2046 assert(k->oop_is_instance(), "must be an instance klass"); |
2047 if (! k->oop_is_instance()) return false; | |
0 | 2048 |
2049 ResourceMark rm(THREAD); | |
6983 | 2050 const char* name = k->name()->as_C_string(); |
2051 bool system_class = k->class_loader() == NULL; | |
0 | 2052 return JavaAssertions::enabled(name, system_class); |
2053 | |
2054 JVM_END | |
2055 | |
2056 | |
2057 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2058 // command-line assertion arguments (i.e., -ea, -da). | |
2059 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2060 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2061 JvmtiVMObjectAllocEventCollector oam; | |
2062 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2063 return JNIHandles::make_local(env, asd); | |
2064 JVM_END | |
2065 | |
2066 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2067 | |
2068 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2069 | |
2070 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2071 // All functions from this section should call the jvmtiThreadSate function: | |
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2072 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2073 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2074 // was invoked in the middle of the class redefinition. |
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2075 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2076 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2077 | |
2078 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2079 JVMWrapper("JVM_GetClassNameUTF"); | |
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2080 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2081 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2082 return k->name()->as_utf8(); |
0 | 2083 JVM_END |
2084 | |
2085 | |
2086 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2087 JVMWrapper("JVM_GetClassCPTypes"); | |
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2088 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2089 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2090 // types will have length zero if this is not an InstanceKlass |
0 | 2091 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2092 if (k->oop_is_instance()) { |
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2093 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2094 for (int index = cp->length() - 1; index >= 0; index--) { |
2095 constantTag tag = cp->tag_at(index); | |
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2096 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2097 } |
2098 } | |
2099 JVM_END | |
2100 | |
2101 | |
2102 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2103 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2104 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2105 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2106 if (!k->oop_is_instance()) |
0 | 2107 return 0; |
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2108 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2109 JVM_END |
2110 | |
2111 | |
2112 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2113 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2114 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2115 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2116 if (!k->oop_is_instance()) |
0 | 2117 return 0; |
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2118 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2119 JVM_END |
2120 | |
2121 | |
2122 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2123 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2124 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2125 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2126 if (!k->oop_is_instance()) |
0 | 2127 return 0; |
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2128 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2129 JVM_END |
2130 | |
2131 | |
2132 // The following methods, used for the verifier, are never called with | |
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2133 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2134 // Typically, these methods are called in a loop with bounds determined |
2135 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2136 // zero for arrays. | |
2137 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2138 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2139 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2140 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2141 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2142 int length = method->checked_exceptions_length(); |
0 | 2143 if (length > 0) { |
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2144 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2145 for (int i = 0; i < length; i++) { |
2146 exceptions[i] = table[i].class_cp_index; | |
2147 } | |
2148 } | |
2149 JVM_END | |
2150 | |
2151 | |
2152 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2153 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2154 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2155 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2156 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2157 return method->checked_exceptions_length(); |
0 | 2158 JVM_END |
2159 | |
2160 | |
2161 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2162 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2163 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2164 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2165 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2166 memcpy(code, method->code_base(), method->code_size()); |
0 | 2167 JVM_END |
2168 | |
2169 | |
2170 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2171 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2172 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2173 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2174 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2175 return method->code_size(); |
0 | 2176 JVM_END |
2177 | |
2178 | |
2179 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2180 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2181 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2182 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2183 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2184 ExceptionTable extable(method); |
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2185 entry->start_pc = extable.start_pc(entry_index); |
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2186 entry->end_pc = extable.end_pc(entry_index); |
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2187 entry->handler_pc = extable.handler_pc(entry_index); |
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2188 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2189 JVM_END |
2190 | |
2191 | |
2192 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2193 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2194 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2195 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2196 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2197 return method->exception_table_length(); |
0 | 2198 JVM_END |
2199 | |
2200 | |
2201 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2202 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2203 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2204 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2205 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2206 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2207 JVM_END |
2208 | |
2209 | |
2210 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2211 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2212 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2213 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2214 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2215 JVM_END |
2216 | |
2217 | |
2218 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2219 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2220 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2221 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2222 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2223 return method->max_locals(); |
0 | 2224 JVM_END |
2225 | |
2226 | |
2227 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2228 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2229 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2230 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2231 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2232 return method->size_of_parameters(); |
0 | 2233 JVM_END |
2234 | |
2235 | |
2236 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2237 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2238 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2239 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2240 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2241 return method->verifier_max_stack(); |
0 | 2242 JVM_END |
2243 | |
2244 | |
2245 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2246 JVMWrapper("JVM_IsConstructorIx"); | |
2247 ResourceMark rm(THREAD); | |
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2248 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2249 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2250 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2251 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2252 JVM_END |
2253 | |
2254 | |
2255 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2256 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2257 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2258 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2259 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2260 return method->name()->as_utf8(); |
0 | 2261 JVM_END |
2262 | |
2263 | |
2264 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2265 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2266 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2267 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2268 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2269 return method->signature()->as_utf8(); |
0 | 2270 JVM_END |
2271 | |
2272 /** | |
2273 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2274 * read entries in the constant pool. Since the old verifier always | |
2275 * works on a copy of the code, it will not see any rewriting that | |
2276 * may possibly occur in the middle of verification. So it is important | |
2277 * that nothing it calls tries to use the cpCache instead of the raw | |
2278 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2279 */ | |
2280 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2281 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2282 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2283 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2284 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2285 switch (cp->tag_at(cp_index).value()) { |
2286 case JVM_CONSTANT_Fieldref: | |
2287 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2288 default: | |
2289 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2290 } | |
2291 ShouldNotReachHere(); | |
2292 return NULL; | |
2293 JVM_END | |
2294 | |
2295 | |
2296 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2297 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2298 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2299 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2300 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2301 switch (cp->tag_at(cp_index).value()) { |
2302 case JVM_CONSTANT_InterfaceMethodref: | |
2303 case JVM_CONSTANT_Methodref: | |
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2304 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2305 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2306 default: | |
2307 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2308 } | |
2309 ShouldNotReachHere(); | |
2310 return NULL; | |
2311 JVM_END | |
2312 | |
2313 | |
2314 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2315 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2316 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2317 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2318 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2319 switch (cp->tag_at(cp_index).value()) { |
2320 case JVM_CONSTANT_InterfaceMethodref: | |
2321 case JVM_CONSTANT_Methodref: | |
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2322 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2323 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2324 default: | |
2325 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2326 } | |
2327 ShouldNotReachHere(); | |
2328 return NULL; | |
2329 JVM_END | |
2330 | |
2331 | |
2332 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2333 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2334 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2335 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2336 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2337 switch (cp->tag_at(cp_index).value()) { |
2338 case JVM_CONSTANT_Fieldref: | |
2339 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2340 default: | |
2341 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2342 } | |
2343 ShouldNotReachHere(); | |
2344 return NULL; | |
2345 JVM_END | |
2346 | |
2347 | |
2348 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2349 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2350 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2351 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2352 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2353 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2354 return classname->as_utf8(); |
2355 JVM_END | |
2356 | |
2357 | |
2358 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2359 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2360 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2362 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2363 switch (cp->tag_at(cp_index).value()) { |
2364 case JVM_CONSTANT_Fieldref: { | |
2365 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2366 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2367 return classname->as_utf8(); |
2368 } | |
2369 default: | |
2370 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2371 } | |
2372 ShouldNotReachHere(); | |
2373 return NULL; | |
2374 JVM_END | |
2375 | |
2376 | |
2377 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2378 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2379 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2381 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2382 switch (cp->tag_at(cp_index).value()) { |
2383 case JVM_CONSTANT_Methodref: | |
2384 case JVM_CONSTANT_InterfaceMethodref: { | |
2385 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2386 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2387 return classname->as_utf8(); |
2388 } | |
2389 default: | |
2390 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2391 } | |
2392 ShouldNotReachHere(); | |
2393 return NULL; | |
2394 JVM_END | |
2395 | |
2396 | |
3938 | 2397 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2398 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2399 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2400 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2401 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2402 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2403 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2404 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2405 switch (cp->tag_at(cp_index).value()) { |
2406 case JVM_CONSTANT_Fieldref: { | |
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2407 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2408 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2409 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2410 if (fs.name() == name && fs.signature() == signature) { | |
2411 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2412 } |
2413 } | |
2414 return -1; | |
2415 } | |
2416 default: | |
2417 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2418 } | |
2419 ShouldNotReachHere(); | |
2420 return 0; | |
2421 JVM_END | |
2422 | |
2423 | |
2424 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2425 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2426 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2427 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2428 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2429 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2430 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2431 switch (cp->tag_at(cp_index).value()) { |
2432 case JVM_CONSTANT_Methodref: | |
2433 case JVM_CONSTANT_InterfaceMethodref: { | |
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2434 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2435 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2436 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2437 int methods_count = methods->length(); |
2438 for (int i = 0; i < methods_count; i++) { | |
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2439 Method* method = methods->at(i); |
0 | 2440 if (method->name() == name && method->signature() == signature) { |
2441 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2442 } | |
2443 } | |
2444 return -1; | |
2445 } | |
2446 default: | |
2447 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2448 } | |
2449 ShouldNotReachHere(); | |
2450 return 0; | |
2451 JVM_END | |
2452 | |
2453 | |
2454 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2455 | |
2456 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2457 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2458 JVM_END | |
2459 | |
2460 | |
2461 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2462 JVMWrapper("JVM_IsSameClassPackage"); | |
2463 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2464 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2465 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2466 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2467 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2468 JVM_END | |
2469 | |
2470 | |
2471 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2472 | |
2473 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2474 JVMWrapper2("JVM_Open (%s)", fname); | |
2475 | |
2476 //%note jvm_r6 | |
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|
2477 int result = os::open(fname, flags, mode); |
0 | 2478 if (result >= 0) { |
2479 return result; | |
2480 } else { | |
2481 switch(errno) { | |
2482 case EEXIST: | |
2483 return JVM_EEXIST; | |
2484 default: | |
2485 return -1; | |
2486 } | |
2487 } | |
2488 JVM_END | |
2489 | |
2490 | |
2491 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2492 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2493 //%note jvm_r6 | |
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|
2494 return os::close(fd); |
0 | 2495 JVM_END |
2496 | |
2497 | |
2498 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2499 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2500 | |
2501 //%note jvm_r6 | |
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2502 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2503 JVM_END |
2504 | |
2505 | |
2506 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2507 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2508 | |
2509 //%note jvm_r6 | |
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|
2510 return (jint)os::write(fd, buf, nbytes); |
0 | 2511 JVM_END |
2512 | |
2513 | |
2514 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2515 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2516 //%note jvm_r6 | |
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2517 return os::available(fd, pbytes); |
0 | 2518 JVM_END |
2519 | |
2520 | |
2521 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2522 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2523 //%note jvm_r6 | |
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|
2524 return os::lseek(fd, offset, whence); |
0 | 2525 JVM_END |
2526 | |
2527 | |
2528 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2529 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
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|
2530 return os::ftruncate(fd, length); |
0 | 2531 JVM_END |
2532 | |
2533 | |
2534 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2535 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2536 //%note jvm_r6 | |
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|
2537 return os::fsync(fd); |
0 | 2538 JVM_END |
2539 | |
2540 | |
2541 // Printing support ////////////////////////////////////////////////// | |
2542 extern "C" { | |
2543 | |
2544 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2545 // see bug 4399518, 4417214 | |
2546 if ((intptr_t)count <= 0) return -1; | |
2547 return vsnprintf(str, count, fmt, args); | |
2548 } | |
2549 | |
2550 | |
2551 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2552 va_list args; | |
2553 int len; | |
2554 va_start(args, fmt); | |
2555 len = jio_vsnprintf(str, count, fmt, args); | |
2556 va_end(args); | |
2557 return len; | |
2558 } | |
2559 | |
2560 | |
2561 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2562 int len; | |
2563 va_list args; | |
2564 va_start(args, fmt); | |
2565 len = jio_vfprintf(f, fmt, args); | |
2566 va_end(args); | |
2567 return len; | |
2568 } | |
2569 | |
2570 | |
2571 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2572 if (Arguments::vfprintf_hook() != NULL) { | |
2573 return Arguments::vfprintf_hook()(f, fmt, args); | |
2574 } else { | |
2575 return vfprintf(f, fmt, args); | |
2576 } | |
2577 } | |
2578 | |
2579 | |
2191 | 2580 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2581 int len; |
2582 va_list args; | |
2583 va_start(args, fmt); | |
2584 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2585 va_end(args); | |
2586 return len; | |
2587 } | |
2588 | |
2589 | |
2590 // HotSpot specific jio method | |
2591 void jio_print(const char* s) { | |
2592 // Try to make this function as atomic as possible. | |
2593 if (Arguments::vfprintf_hook() != NULL) { | |
2594 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2595 } else { | |
513
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2596 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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|
2597 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2598 } |
2599 } | |
2600 | |
2601 } // Extern C | |
2602 | |
2603 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2604 | |
2605 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2606 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2607 // OSThread objects. The exception to this rule is when the target object is the thread | |
2608 // doing the operation, in which case we know that the thread won't exit until the | |
2609 // operation is done (all exits being voluntary). There are a few cases where it is | |
2610 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2611 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2612 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2613 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2614 // implementation is local to this file, we always lock Threads_lock for that one. | |
2615 | |
2616 static void thread_entry(JavaThread* thread, TRAPS) { | |
2617 HandleMark hm(THREAD); | |
2618 Handle obj(THREAD, thread->threadObj()); | |
2619 JavaValue result(T_VOID); | |
2620 JavaCalls::call_virtual(&result, | |
2621 obj, | |
1142 | 2622 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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|
2623 vmSymbols::run_method_name(), |
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|
2624 vmSymbols::void_method_signature(), |
0 | 2625 THREAD); |
2626 } | |
2627 | |
2628 | |
2629 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2630 JVMWrapper("JVM_StartThread"); | |
2631 JavaThread *native_thread = NULL; | |
2632 | |
2633 // We cannot hold the Threads_lock when we throw an exception, | |
2634 // due to rank ordering issues. Example: we might need to grab the | |
2635 // Heap_lock while we construct the exception. | |
2636 bool throw_illegal_thread_state = false; | |
2637 | |
2638 // We must release the Threads_lock before we can post a jvmti event | |
2639 // in Thread::start. | |
2640 { | |
2641 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2642 // we operate. | |
2643 MutexLocker mu(Threads_lock); | |
2644 | |
2162
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|
2645 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
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2646 // re-starting an already started thread, so we should usually find |
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|
2647 // that the JavaThread is null. However for a JNI attached thread |
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diff
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|
2648 // there is a small window between the Thread object being created |
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diff
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|
2649 // (with its JavaThread set) and the update to its threadStatus, so we |
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|
2650 // have to check for this |
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|
2651 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
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|
2652 throw_illegal_thread_state = true; |
0 | 2653 } else { |
2162
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diff
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|
2654 // We could also check the stillborn flag to see if this thread was already stopped, but |
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|
2655 // for historical reasons we let the thread detect that itself when it starts running |
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|
2656 |
0 | 2657 jlong size = |
2658 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2659 // Allocate the C++ Thread structure and create the native thread. The | |
2660 // stack size retrieved from java is signed, but the constructor takes | |
2661 // size_t (an unsigned type), so avoid passing negative values which would | |
2662 // result in really large stacks. | |
2663 size_t sz = size > 0 ? (size_t) size : 0; | |
2664 native_thread = new JavaThread(&thread_entry, sz); | |
2665 | |
2666 // At this point it may be possible that no osthread was created for the | |
2667 // JavaThread due to lack of memory. Check for this situation and throw | |
2668 // an exception if necessary. Eventually we may want to change this so | |
2669 // that we only grab the lock if the thread was created successfully - | |
2670 // then we can also do this check and throw the exception in the | |
2671 // JavaThread constructor. | |
2672 if (native_thread->osthread() != NULL) { | |
2673 // Note: the current thread is not being used within "prepare". | |
2674 native_thread->prepare(jthread); | |
2675 } | |
2676 } | |
2677 } | |
2678 | |
2679 if (throw_illegal_thread_state) { | |
2680 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2681 } | |
2682 | |
2683 assert(native_thread != NULL, "Starting null thread?"); | |
2684 | |
2685 if (native_thread->osthread() == NULL) { | |
2686 // No one should hold a reference to the 'native_thread'. | |
2687 delete native_thread; | |
2688 if (JvmtiExport::should_post_resource_exhausted()) { | |
2689 JvmtiExport::post_resource_exhausted( | |
2690 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2691 "unable to create new native thread"); | |
2692 } | |
2693 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2694 "unable to create new native thread"); | |
2695 } | |
2696 | |
2697 Thread::start(native_thread); | |
2698 | |
2699 JVM_END | |
2700 | |
2701 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2702 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2703 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
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diff
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|
2704 // same thread as the sender, no safepoint is needed. |
0 | 2705 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2706 JVMWrapper("JVM_StopThread"); | |
2707 | |
2708 oop java_throwable = JNIHandles::resolve(throwable); | |
2709 if (java_throwable == NULL) { | |
2710 THROW(vmSymbols::java_lang_NullPointerException()); | |
2711 } | |
2712 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2713 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
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4717
diff
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|
2714 Events::log_exception(JavaThread::current(), |
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4717
diff
changeset
|
2715 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
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diff
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|
2716 receiver, (address)java_thread, throwable); |
2162
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diff
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|
2717 // First check if thread is alive |
0 | 2718 if (receiver != NULL) { |
2719 // Check if exception is getting thrown at self (use oop equality, since the | |
2720 // target object might exit) | |
2721 if (java_thread == thread->threadObj()) { | |
2722 THROW_OOP(java_throwable); | |
2723 } else { | |
2724 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2725 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2726 } | |
2727 } | |
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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|
2728 else { |
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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
changeset
|
2729 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2730 // - 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
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1980
diff
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|
2731 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2732 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2733 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2734 // stillborn flag for the first case, and if the thread has already |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2735 // 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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|
2736 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2737 } |
0 | 2738 JVM_END |
2739 | |
2740 | |
2741 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2742 JVMWrapper("JVM_IsThreadAlive"); | |
2743 | |
2744 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2745 return java_lang_Thread::is_alive(thread_oop); | |
2746 JVM_END | |
2747 | |
2748 | |
2749 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2750 JVMWrapper("JVM_SuspendThread"); | |
2751 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2752 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2753 | |
2754 if (receiver != NULL) { | |
2755 // thread has run and has not exited (still on threads list) | |
2756 | |
2757 { | |
2758 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2759 if (receiver->is_external_suspend()) { | |
2760 // Don't allow nested external suspend requests. We can't return | |
2761 // an error from this interface so just ignore the problem. | |
2762 return; | |
2763 } | |
2764 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2765 return; | |
2766 } | |
2767 receiver->set_external_suspend(); | |
2768 } | |
2769 | |
2770 // java_suspend() will catch threads in the process of exiting | |
2771 // and will ignore them. | |
2772 receiver->java_suspend(); | |
2773 | |
2774 // It would be nice to have the following assertion in all the | |
2775 // time, but it is possible for a racing resume request to have | |
2776 // resumed this thread right after we suspended it. Temporarily | |
2777 // enable this assertion if you are chasing a different kind of | |
2778 // bug. | |
2779 // | |
2780 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2781 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2782 } | |
2783 JVM_END | |
2784 | |
2785 | |
2786 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2787 JVMWrapper("JVM_ResumeThread"); | |
2788 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2789 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2790 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2791 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2792 // looks at it. | |
2793 MutexLocker ml(Threads_lock); | |
2794 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2795 if (thr != NULL) { | |
2796 // the thread has run and is not in the process of exiting | |
2797 thr->java_resume(); | |
2798 } | |
2799 JVM_END | |
2800 | |
2801 | |
2802 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2803 JVMWrapper("JVM_SetThreadPriority"); | |
2804 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2805 MutexLocker ml(Threads_lock); | |
2806 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2807 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2808 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2809 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2810 Thread::set_priority(thr, (ThreadPriority)prio); | |
2811 } | |
2812 JVM_END | |
2813 | |
2814 | |
2815 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2816 JVMWrapper("JVM_Yield"); | |
2817 if (os::dont_yield()) return; | |
4006 | 2818 #ifndef USDT2 |
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e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2819 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 2820 #else /* USDT2 */ |
2821 HOTSPOT_THREAD_YIELD(); | |
2822 #endif /* USDT2 */ | |
0 | 2823 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
2824 // Critical for similar threading behaviour | |
2825 if (ConvertYieldToSleep) { | |
2826 os::sleep(thread, MinSleepInterval, false); | |
2827 } else { | |
2828 os::yield(); | |
2829 } | |
2830 JVM_END | |
2831 | |
2832 | |
2833 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2834 JVMWrapper("JVM_Sleep"); | |
2835 | |
2836 if (millis < 0) { | |
2837 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2838 } | |
2839 | |
2840 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2841 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2842 } | |
2843 | |
2844 // Save current thread state and restore it at the end of this block. | |
2845 // And set new thread state to SLEEPING. | |
2846 JavaThreadSleepState jtss(thread); | |
2847 | |
4006 | 2848 #ifndef USDT2 |
1324
e392695de029
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fparain
parents:
1144
diff
changeset
|
2849 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 2850 #else /* USDT2 */ |
2851 HOTSPOT_THREAD_SLEEP_BEGIN( | |
2852 millis); | |
2853 #endif /* USDT2 */ | |
1324
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1144
diff
changeset
|
2854 |
0 | 2855 if (millis == 0) { |
2856 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
2857 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
2858 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
2859 // for SOLARIS | |
2860 if (ConvertSleepToYield) { | |
2861 os::yield(); | |
2862 } else { | |
2863 ThreadState old_state = thread->osthread()->get_state(); | |
2864 thread->osthread()->set_state(SLEEPING); | |
2865 os::sleep(thread, MinSleepInterval, false); | |
2866 thread->osthread()->set_state(old_state); | |
2867 } | |
2868 } else { | |
2869 ThreadState old_state = thread->osthread()->get_state(); | |
2870 thread->osthread()->set_state(SLEEPING); | |
2871 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
2872 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
2873 // us while we were sleeping. We do not overwrite those. | |
2874 if (!HAS_PENDING_EXCEPTION) { | |
4006 | 2875 #ifndef USDT2 |
1324
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diff
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|
2876 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 2877 #else /* USDT2 */ |
2878 HOTSPOT_THREAD_SLEEP_END( | |
2879 1); | |
2880 #endif /* USDT2 */ | |
0 | 2881 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
2882 // to properly restore the thread state. That's likely wrong. | |
2883 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2884 } | |
2885 } | |
2886 thread->osthread()->set_state(old_state); | |
2887 } | |
4006 | 2888 #ifndef USDT2 |
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|
2889 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 2890 #else /* USDT2 */ |
2891 HOTSPOT_THREAD_SLEEP_END( | |
2892 0); | |
2893 #endif /* USDT2 */ | |
0 | 2894 JVM_END |
2895 | |
2896 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
2897 JVMWrapper("JVM_CurrentThread"); | |
2898 oop jthread = thread->threadObj(); | |
2899 assert (thread != NULL, "no current thread!"); | |
2900 return JNIHandles::make_local(env, jthread); | |
2901 JVM_END | |
2902 | |
2903 | |
2904 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
2905 JVMWrapper("JVM_CountStackFrames"); | |
2906 | |
2907 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2908 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2909 bool throw_illegal_thread_state = false; | |
2910 int count = 0; | |
2911 | |
2912 { | |
2913 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2914 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2915 // acquire of the lock | |
2916 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2917 | |
2918 if (thr == NULL) { | |
2919 // do nothing | |
2920 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
2921 // Check whether this java thread has been suspended already. If not, throws | |
2922 // IllegalThreadStateException. We defer to throw that exception until | |
2923 // Threads_lock is released since loading exception class has to leave VM. | |
2924 // The correct way to test a thread is actually suspended is | |
2925 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
2926 // the Threads_lock. The above tests are sufficient for our purposes | |
2927 // provided the walkability of the stack is stable - which it isn't | |
2928 // 100% but close enough for most practical purposes. | |
2929 throw_illegal_thread_state = true; | |
2930 } else { | |
2931 // Count all java activation, i.e., number of vframes | |
2932 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
2933 // Native frames are not counted | |
2934 if (!vfst.method()->is_native()) count++; | |
2935 } | |
2936 } | |
2937 } | |
2938 | |
2939 if (throw_illegal_thread_state) { | |
2940 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
2941 "this thread is not suspended"); | |
2942 } | |
2943 return count; | |
2944 JVM_END | |
2945 | |
2946 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
2947 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
2948 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
2949 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
2950 // outside the critical section. Threads_lock is hot so we want to minimize | |
2951 // the hold-time. A cleaner interface would be to decompose interrupt into | |
2952 // two steps. The 1st phase, performed under Threads_lock, would return | |
2953 // a closure that'd be invoked after Threads_lock was dropped. | |
2954 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
2955 // admit spurious wakeups. | |
2956 | |
2957 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
2958 JVMWrapper("JVM_Interrupt"); | |
2959 | |
2960 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2961 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2962 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2963 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2964 // acquire of the lock | |
2965 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2966 if (thr != NULL) { | |
2967 Thread::interrupt(thr); | |
2968 } | |
2969 JVM_END | |
2970 | |
2971 | |
2972 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
2973 JVMWrapper("JVM_IsInterrupted"); | |
2974 | |
2975 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2976 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2977 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2978 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2979 // acquire of the lock | |
2980 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2981 if (thr == NULL) { | |
2982 return JNI_FALSE; | |
2983 } else { | |
2984 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
2985 } | |
2986 JVM_END | |
2987 | |
2988 | |
2989 // Return true iff the current thread has locked the object passed in | |
2990 | |
2991 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
2992 JVMWrapper("JVM_HoldsLock"); | |
2993 assert(THREAD->is_Java_thread(), "sanity check"); | |
2994 if (obj == NULL) { | |
2995 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
2996 } | |
2997 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
2998 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
2999 JVM_END | |
3000 | |
3001 | |
3002 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3003 JVMWrapper("JVM_DumpAllStacks"); | |
3004 VM_PrintThreads op; | |
3005 VMThread::execute(&op); | |
3006 if (JvmtiExport::should_post_data_dump()) { | |
3007 JvmtiExport::post_data_dump(); | |
3008 } | |
3009 JVM_END | |
3010 | |
4006 | 3011 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3012 JVMWrapper("JVM_SetNativeThreadName"); | |
3013 ResourceMark rm(THREAD); | |
3014 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3015 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3016 // Thread naming only supported for the current thread, doesn't work for | |
3017 // target threads. | |
3018 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3019 // we don't set the name of an attached thread to avoid stepping | |
3020 // on other programs | |
3021 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3022 os::set_native_thread_name(thread_name); | |
3023 } | |
3024 JVM_END | |
0 | 3025 |
3026 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3027 | |
3028 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3029 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3030 if (jthread->privileged_stack_top() == NULL) return false; | |
3031 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3032 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3033 if (loader == NULL) return true; | |
3034 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3035 if (trusted) return true; | |
3036 } | |
3037 return false; | |
3038 } | |
3039 | |
3040 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3041 JVMWrapper("JVM_CurrentLoadedClass"); | |
3042 ResourceMark rm(THREAD); | |
3043 | |
3044 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3045 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3046 bool trusted = is_trusted_frame(thread, &vfst); | |
3047 if (trusted) return NULL; | |
3048 | |
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3049 Method* m = vfst.method(); |
0 | 3050 if (!m->is_native()) { |
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3051 InstanceKlass* holder = m->method_holder(); |
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3052 oop loader = holder->class_loader(); |
0 | 3053 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
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3054 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3055 } |
3056 } | |
3057 } | |
3058 return NULL; | |
3059 JVM_END | |
3060 | |
3061 | |
3062 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3063 JVMWrapper("JVM_CurrentClassLoader"); | |
3064 ResourceMark rm(THREAD); | |
3065 | |
3066 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3067 | |
3068 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3069 bool trusted = is_trusted_frame(thread, &vfst); | |
3070 if (trusted) return NULL; | |
3071 | |
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3072 Method* m = vfst.method(); |
0 | 3073 if (!m->is_native()) { |
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3074 InstanceKlass* holder = m->method_holder(); |
0 | 3075 assert(holder->is_klass(), "just checking"); |
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3076 oop loader = holder->class_loader(); |
0 | 3077 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3078 return JNIHandles::make_local(env, loader); | |
3079 } | |
3080 } | |
3081 } | |
3082 return NULL; | |
3083 JVM_END | |
3084 | |
3085 | |
3086 // Utility object for collecting method holders walking down the stack | |
3087 class KlassLink: public ResourceObj { | |
3088 public: | |
3089 KlassHandle klass; | |
3090 KlassLink* next; | |
3091 | |
3092 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3093 }; | |
3094 | |
3095 | |
3096 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3097 JVMWrapper("JVM_GetClassContext"); | |
3098 ResourceMark rm(THREAD); | |
3099 JvmtiVMObjectAllocEventCollector oam; | |
3100 // Collect linked list of (handles to) method holders | |
3101 KlassLink* first = NULL; | |
3102 KlassLink* last = NULL; | |
3103 int depth = 0; | |
3104 | |
3105 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
3106 // Native frames are not returned | |
3107 if (!vfst.method()->is_native()) { | |
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3108 Klass* holder = vfst.method()->method_holder(); |
0 | 3109 assert(holder->is_klass(), "just checking"); |
3110 depth++; | |
3111 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3112 if (first == NULL) { | |
3113 first = last = l; | |
3114 } else { | |
3115 last->next = l; | |
3116 last = l; | |
3117 } | |
3118 } | |
3119 } | |
3120 | |
3121 // Create result array of type [Ljava/lang/Class; | |
1142 | 3122 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3123 // Fill in mirrors corresponding to method holders |
3124 int index = 0; | |
3125 while (first != NULL) { | |
6983 | 3126 result->obj_at_put(index++, first->klass()->java_mirror()); |
0 | 3127 first = first->next; |
3128 } | |
3129 assert(index == depth, "just checking"); | |
3130 | |
3131 return (jobjectArray) JNIHandles::make_local(env, result); | |
3132 JVM_END | |
3133 | |
3134 | |
3135 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3136 JVMWrapper("JVM_ClassDepth"); | |
3137 ResourceMark rm(THREAD); | |
3138 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3139 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3140 | |
3141 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3142 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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3143 if (class_name_sym == NULL) { |
0 | 3144 return -1; |
3145 } | |
3146 | |
3147 int depth = 0; | |
3148 | |
3149 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3150 if (!vfst.method()->is_native()) { | |
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3151 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3152 assert(holder->is_klass(), "just checking"); |
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3153 if (holder->name() == class_name_sym) { |
0 | 3154 return depth; |
3155 } | |
3156 depth++; | |
3157 } | |
3158 } | |
3159 return -1; | |
3160 JVM_END | |
3161 | |
3162 | |
3163 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3164 JVMWrapper("JVM_ClassLoaderDepth"); | |
3165 ResourceMark rm(THREAD); | |
3166 int depth = 0; | |
3167 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3168 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3169 bool trusted = is_trusted_frame(thread, &vfst); | |
3170 if (trusted) return -1; | |
3171 | |
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3172 Method* m = vfst.method(); |
0 | 3173 if (!m->is_native()) { |
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3174 InstanceKlass* holder = m->method_holder(); |
0 | 3175 assert(holder->is_klass(), "just checking"); |
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3176 oop loader = holder->class_loader(); |
0 | 3177 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3178 return depth; | |
3179 } | |
3180 depth++; | |
3181 } | |
3182 } | |
3183 return -1; | |
3184 JVM_END | |
3185 | |
3186 | |
3187 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3188 | |
3189 | |
3190 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3191 JVMWrapper("JVM_GetSystemPackage"); | |
3192 ResourceMark rm(THREAD); | |
3193 JvmtiVMObjectAllocEventCollector oam; | |
3194 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3195 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3196 return (jstring) JNIHandles::make_local(result); | |
3197 JVM_END | |
3198 | |
3199 | |
3200 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3201 JVMWrapper("JVM_GetSystemPackages"); | |
3202 JvmtiVMObjectAllocEventCollector oam; | |
3203 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3204 return (jobjectArray) JNIHandles::make_local(result); | |
3205 JVM_END | |
3206 | |
3207 | |
3208 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3209 | |
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3210 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3211 if (current_class == NULL) { |
3212 return true; | |
3213 } | |
3214 if ((current_class == field_class) || access.is_public()) { | |
3215 return true; | |
3216 } | |
3217 | |
3218 if (access.is_protected()) { | |
3219 // See if current_class is a subclass of field_class | |
6983 | 3220 if (current_class->is_subclass_of(field_class)) { |
0 | 3221 return true; |
3222 } | |
3223 } | |
3224 | |
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3225 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3226 } |
3227 | |
3228 | |
3229 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3230 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3231 JVMWrapper("JVM_AllocateNewObject"); | |
3232 JvmtiVMObjectAllocEventCollector oam; | |
3233 // Receiver is not used | |
3234 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3235 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3236 | |
3237 // Cannot instantiate primitive types | |
3238 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3239 ResourceMark rm(THREAD); | |
3240 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3241 } | |
3242 | |
3243 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3244 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3245 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3246 ResourceMark rm(THREAD); |
3247 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3248 } | |
3249 | |
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3250 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3251 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3252 |
3253 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3254 | |
3255 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3256 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3257 | |
3258 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3259 curr_klass->initialize(CHECK_NULL); | |
3260 | |
3261 methodHandle m (THREAD, | |
3262 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3263 vmSymbols::void_method_signature())); | |
3264 if (m.is_null()) { | |
3265 ResourceMark rm(THREAD); | |
3266 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3267 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3268 vmSymbols::object_initializer_name(), |
3269 vmSymbols::void_method_signature())); | |
3270 } | |
3271 | |
3272 if (curr_klass == init_klass && !m->is_public()) { | |
3273 // Calling the constructor for class 'curr_klass'. | |
3274 // Only allow calls to a public no-arg constructor. | |
3275 // This path corresponds to creating an Externalizable object. | |
3276 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3277 } | |
3278 | |
3279 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3280 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3281 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3282 } | |
3283 | |
3284 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3285 // Call constructor m. This might call a constructor higher up in the hierachy | |
3286 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3287 | |
3288 return JNIHandles::make_local(obj()); | |
3289 JVM_END | |
3290 | |
3291 | |
3292 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3293 JVMWrapper("JVM_AllocateNewArray"); | |
3294 JvmtiVMObjectAllocEventCollector oam; | |
3295 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3296 | |
3297 if (java_lang_Class::is_primitive(mirror)) { | |
3298 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3299 } | |
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3300 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3301 oop result; |
3302 | |
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3303 if (k->oop_is_typeArray()) { |
0 | 3304 // typeArray |
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3305 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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3306 } else if (k->oop_is_objArray()) { |
0 | 3307 // objArray |
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3308 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3309 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3310 result = oak->allocate(length, CHECK_NULL); | |
3311 } else { | |
3312 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3313 } | |
3314 return JNIHandles::make_local(env, result); | |
3315 JVM_END | |
3316 | |
3317 | |
3318 // Return the first non-null class loader up the execution stack, or null | |
3319 // if only code from the null class loader is on the stack. | |
3320 | |
3321 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3322 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3323 // UseNewReflection | |
3324 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
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3325 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3326 if (loader != NULL) { |
3327 return JNIHandles::make_local(env, loader); | |
3328 } | |
3329 } | |
3330 return NULL; | |
3331 JVM_END | |
3332 | |
3333 | |
3334 // Load a class relative to the most recent class on the stack with a non-null | |
3335 // classloader. | |
3336 // This function has been deprecated and should not be considered part of the | |
3337 // specified JVM interface. | |
3338 | |
3339 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3340 jclass currClass, jstring currClassName)) | |
3341 JVMWrapper("JVM_LoadClass0"); | |
3342 // Receiver is not used | |
3343 ResourceMark rm(THREAD); | |
3344 | |
3345 // Class name argument is not guaranteed to be in internal format | |
3346 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3347 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3348 | |
3349 const char* str = java_lang_String::as_utf8_string(string()); | |
3350 | |
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3351 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3352 // It's impossible to create this class; the name cannot fit |
3353 // into the constant pool. | |
3354 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3355 } | |
3356 | |
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3357 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3358 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3359 // Find the most recent class on the stack with a non-null classloader | |
3360 oop loader = NULL; | |
3361 oop protection_domain = NULL; | |
3362 if (curr_klass.is_null()) { | |
3363 for (vframeStream vfst(thread); | |
3364 !vfst.at_end() && loader == NULL; | |
3365 vfst.next()) { | |
3366 if (!vfst.method()->is_native()) { | |
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3367 InstanceKlass* holder = vfst.method()->method_holder(); |
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diff
changeset
|
3368 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3369 protection_domain = holder->protection_domain(); |
0 | 3370 } |
3371 } | |
3372 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3373 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3374 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3375 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3376 } |
3377 Handle h_loader(THREAD, loader); | |
3378 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3379 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3380 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3381 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
3382 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3383 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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579
diff
changeset
|
3384 return result; |
0 | 3385 JVM_END |
3386 | |
3387 | |
3388 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3389 | |
3390 | |
3391 // resolve array handle and check arguments | |
3392 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3393 if (arr == NULL) { | |
3394 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3395 } | |
3396 oop a = JNIHandles::resolve_non_null(arr); | |
6725
da91efe96a93
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diff
changeset
|
3397 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3398 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3399 } | |
3400 return arrayOop(a); | |
3401 } | |
3402 | |
3403 | |
3404 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3405 JVMWrapper("JVM_GetArrayLength"); | |
3406 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3407 return a->length(); | |
3408 JVM_END | |
3409 | |
3410 | |
3411 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3412 JVMWrapper("JVM_Array_Get"); | |
3413 JvmtiVMObjectAllocEventCollector oam; | |
3414 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3415 jvalue value; | |
3416 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3417 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3418 return JNIHandles::make_local(env, box); | |
3419 JVM_END | |
3420 | |
3421 | |
3422 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3423 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3424 jvalue value; | |
3425 value.i = 0; // to initialize value before getting used in CHECK | |
3426 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3427 assert(a->is_typeArray(), "just checking"); | |
3428 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3429 BasicType wide_type = (BasicType) wCode; | |
3430 if (type != wide_type) { | |
3431 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3432 } | |
3433 return value; | |
3434 JVM_END | |
3435 | |
3436 | |
3437 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3438 JVMWrapper("JVM_SetArrayElement"); | |
3439 arrayOop a = check_array(env, arr, false, CHECK); | |
3440 oop box = JNIHandles::resolve(val); | |
3441 jvalue value; | |
3442 value.i = 0; // to initialize value before getting used in CHECK | |
3443 BasicType value_type; | |
3444 if (a->is_objArray()) { | |
3445 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3446 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3447 } else { | |
3448 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3449 } | |
3450 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3451 JVM_END | |
3452 | |
3453 | |
3454 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3455 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3456 arrayOop a = check_array(env, arr, true, CHECK); | |
3457 assert(a->is_typeArray(), "just checking"); | |
3458 BasicType value_type = (BasicType) vCode; | |
3459 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3460 JVM_END | |
3461 | |
3462 | |
3463 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3464 JVMWrapper("JVM_NewArray"); | |
3465 JvmtiVMObjectAllocEventCollector oam; | |
3466 oop element_mirror = JNIHandles::resolve(eltClass); | |
3467 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3468 return JNIHandles::make_local(env, result); | |
3469 JVM_END | |
3470 | |
3471 | |
3472 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3473 JVMWrapper("JVM_NewMultiArray"); | |
3474 JvmtiVMObjectAllocEventCollector oam; | |
3475 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3476 oop element_mirror = JNIHandles::resolve(eltClass); | |
3477 assert(dim_array->is_typeArray(), "just checking"); | |
3478 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3479 return JNIHandles::make_local(env, result); | |
3480 JVM_END | |
3481 | |
3482 | |
3483 // Networking library support //////////////////////////////////////////////////////////////////// | |
3484 | |
3485 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3486 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3487 return 0; |
0 | 3488 JVM_END |
3489 | |
3490 | |
3491 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3492 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3493 return os::socket(domain, type, protocol); |
0 | 3494 JVM_END |
3495 | |
3496 | |
3497 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3498 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3499 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3500 return os::socket_close(fd); |
0 | 3501 JVM_END |
3502 | |
3503 | |
3504 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3505 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3506 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3507 return os::socket_shutdown(fd, howto); |
0 | 3508 JVM_END |
3509 | |
3510 | |
3511 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3512 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3513 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3514 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3515 JVM_END |
3516 | |
3517 | |
3518 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3519 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3520 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3521 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3522 JVM_END |
3523 | |
3524 | |
3525 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3526 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3527 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3528 return os::timeout(fd, timeout); |
0 | 3529 JVM_END |
3530 | |
3531 | |
3532 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3533 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3534 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3535 return os::listen(fd, count); |
0 | 3536 JVM_END |
3537 | |
3538 | |
3539 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3540 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3541 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3542 return os::connect(fd, him, (socklen_t)len); |
0 | 3543 JVM_END |
3544 | |
3545 | |
3546 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3547 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3548 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3549 return os::bind(fd, him, (socklen_t)len); |
0 | 3550 JVM_END |
3551 | |
3552 | |
3553 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3554 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3555 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3556 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3557 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3558 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3559 return result; |
0 | 3560 JVM_END |
3561 | |
3562 | |
3563 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3564 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3565 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3566 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3567 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3568 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3569 return result; |
0 | 3570 JVM_END |
3571 | |
3572 | |
3573 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3574 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3575 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3576 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3577 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
|
3578 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3579 return result; |
0 | 3580 JVM_END |
3581 | |
3582 | |
3583 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3584 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3585 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3586 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3587 JVM_END |
3588 | |
3589 | |
3590 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3591 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3592 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3593 return os::socket_available(fd, pbytes); |
0 | 3594 JVM_END |
3595 | |
3596 | |
3597 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3598 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3599 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3600 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3601 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
|
3602 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3603 return result; |
0 | 3604 JVM_END |
3605 | |
3606 | |
3607 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3608 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3609 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3610 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3611 JVM_END |
3612 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3613 |
0 | 3614 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3615 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3616 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3617 JVM_END |
0 | 3618 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3619 |
0 | 3620 // Library support /////////////////////////////////////////////////////////////////////////// |
3621 | |
3622 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3623 //%note jvm_ct | |
3624 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3625 char ebuf[1024]; | |
3626 void *load_result; | |
3627 { | |
3628 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
3629 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3630 } |
3631 if (load_result == NULL) { | |
3632 char msg[1024]; | |
3633 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3634 // Since 'ebuf' may contain a string encoded using | |
3635 // platform encoding scheme, we need to pass | |
3636 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3637 // as the last argument. See bug 6367357. | |
3638 Handle h_exception = | |
3639 Exceptions::new_exception(thread, | |
3640 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3641 msg, Exceptions::unsafe_to_utf8); | |
3642 | |
3643 THROW_HANDLE_0(h_exception); | |
3644 } | |
3645 return load_result; | |
3646 JVM_END | |
3647 | |
3648 | |
3649 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3650 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3651 os::dll_unload(handle); |
0 | 3652 JVM_END |
3653 | |
3654 | |
3655 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3656 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3657 return os::dll_lookup(handle, name); |
0 | 3658 JVM_END |
3659 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3660 |
0 | 3661 // Floating point support //////////////////////////////////////////////////////////////////// |
3662 | |
3663 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3664 JVMWrapper("JVM_IsNaN"); | |
3665 return g_isnan(a); | |
3666 JVM_END | |
3667 | |
3668 | |
3669 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3670 | |
3671 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3672 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3673 return Threads::is_supported_jni_version_including_1_1(version); | |
3674 JVM_END | |
3675 | |
3676 | |
3677 // String support /////////////////////////////////////////////////////////////////////////// | |
3678 | |
3679 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3680 JVMWrapper("JVM_InternString"); | |
3681 JvmtiVMObjectAllocEventCollector oam; | |
3682 if (str == NULL) return NULL; | |
3683 oop string = JNIHandles::resolve_non_null(str); | |
3684 oop result = StringTable::intern(string, CHECK_NULL); | |
3685 return (jstring) JNIHandles::make_local(env, result); | |
3686 JVM_END | |
3687 | |
3688 | |
3689 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3690 | |
3691 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3692 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3693 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3694 // that only works with java threads. | |
3695 | |
3696 | |
3697 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3698 VM_Exit::block_if_vm_exited(); | |
3699 JVMWrapper("JVM_RawMonitorCreate"); | |
3700 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3701 } | |
3702 | |
3703 | |
3704 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3705 VM_Exit::block_if_vm_exited(); | |
3706 JVMWrapper("JVM_RawMonitorDestroy"); | |
3707 delete ((Mutex*) mon); | |
3708 } | |
3709 | |
3710 | |
3711 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3712 VM_Exit::block_if_vm_exited(); | |
3713 JVMWrapper("JVM_RawMonitorEnter"); | |
3714 ((Mutex*) mon)->jvm_raw_lock(); | |
3715 return 0; | |
3716 } | |
3717 | |
3718 | |
3719 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3720 VM_Exit::block_if_vm_exited(); | |
3721 JVMWrapper("JVM_RawMonitorExit"); | |
3722 ((Mutex*) mon)->jvm_raw_unlock(); | |
3723 } | |
3724 | |
3725 | |
3726 // Support for Serialization | |
3727 | |
3728 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3729 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3730 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3731 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3732 | |
3733 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3734 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3735 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3736 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3737 | |
3738 | |
3739 void initialize_converter_functions() { | |
3740 if (JDK_Version::is_gte_jdk14x_version()) { | |
3741 // These functions only exist for compatibility with 1.3.1 and earlier | |
3742 return; | |
3743 } | |
3744 | |
3745 // called from universe_post_init() | |
3746 assert( | |
3747 int_bits_to_float_fn == NULL && | |
3748 long_bits_to_double_fn == NULL && | |
3749 float_to_int_bits_fn == NULL && | |
3750 double_to_long_bits_fn == NULL , | |
3751 "initialization done twice" | |
3752 ); | |
3753 // initialize | |
3754 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3755 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3756 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3757 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3758 // verify | |
3759 assert( | |
3760 int_bits_to_float_fn != NULL && | |
3761 long_bits_to_double_fn != NULL && | |
3762 float_to_int_bits_fn != NULL && | |
3763 double_to_long_bits_fn != NULL , | |
3764 "initialization failed" | |
3765 ); | |
3766 } | |
3767 | |
3768 | |
3769 // Serialization | |
3770 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3771 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3772 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3773 | |
3774 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3775 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3776 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3777 oop o = JNIHandles::resolve(obj); | |
3778 | |
3779 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3780 THROW(vmSymbols::java_lang_NullPointerException()); | |
3781 } | |
3782 | |
3783 jsize nfids = fids->length(); | |
3784 if (nfids == 0) return; | |
3785 | |
3786 if (tcodes->length() < nfids) { | |
3787 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3788 } | |
3789 | |
3790 jsize off = 0; | |
3791 /* loop through fields, setting values */ | |
3792 for (jsize i = 0; i < nfids; i++) { | |
3793 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3794 int field_offset; | |
3795 if (fid != NULL) { | |
3796 // NULL is a legal value for fid, but retrieving the field offset | |
3797 // trigger assertion in that case | |
3798 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3799 } | |
3800 | |
3801 switch (tcodes->char_at(i)) { | |
3802 case 'Z': | |
3803 if (fid != NULL) { | |
3804 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3805 o->bool_field_put(field_offset, val); | |
3806 } | |
3807 off++; | |
3808 break; | |
3809 | |
3810 case 'B': | |
3811 if (fid != NULL) { | |
3812 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3813 } | |
3814 off++; | |
3815 break; | |
3816 | |
3817 case 'C': | |
3818 if (fid != NULL) { | |
3819 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3820 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3821 o->char_field_put(field_offset, val); | |
3822 } | |
3823 off += 2; | |
3824 break; | |
3825 | |
3826 case 'S': | |
3827 if (fid != NULL) { | |
3828 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3829 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3830 o->short_field_put(field_offset, val); | |
3831 } | |
3832 off += 2; | |
3833 break; | |
3834 | |
3835 case 'I': | |
3836 if (fid != NULL) { | |
3837 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3838 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3839 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3840 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3841 o->int_field_put(field_offset, ival); | |
3842 } | |
3843 off += 4; | |
3844 break; | |
3845 | |
3846 case 'F': | |
3847 if (fid != NULL) { | |
3848 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3849 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3850 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3851 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3852 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
3853 o->float_field_put(field_offset, fval); | |
3854 } | |
3855 off += 4; | |
3856 break; | |
3857 | |
3858 case 'J': | |
3859 if (fid != NULL) { | |
3860 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3861 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3862 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3863 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3864 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3865 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3866 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3867 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3868 o->long_field_put(field_offset, lval); | |
3869 } | |
3870 off += 8; | |
3871 break; | |
3872 | |
3873 case 'D': | |
3874 if (fid != NULL) { | |
3875 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3876 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3877 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3878 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3879 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3880 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3881 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3882 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3883 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
3884 o->double_field_put(field_offset, dval); | |
3885 } | |
3886 off += 8; | |
3887 break; | |
3888 | |
3889 default: | |
3890 // Illegal typecode | |
3891 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3892 } | |
3893 } | |
3894 JVM_END | |
3895 | |
3896 | |
3897 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3898 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3899 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3900 | |
3901 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3902 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3903 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3904 oop o = JNIHandles::resolve(obj); | |
3905 | |
3906 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3907 THROW(vmSymbols::java_lang_NullPointerException()); | |
3908 } | |
3909 | |
3910 jsize nfids = fids->length(); | |
3911 if (nfids == 0) return; | |
3912 | |
3913 if (tcodes->length() < nfids) { | |
3914 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3915 } | |
3916 | |
3917 /* loop through fields, fetching values */ | |
3918 jsize off = 0; | |
3919 for (jsize i = 0; i < nfids; i++) { | |
3920 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3921 if (fid == NULL) { | |
3922 THROW(vmSymbols::java_lang_NullPointerException()); | |
3923 } | |
3924 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3925 | |
3926 switch (tcodes->char_at(i)) { | |
3927 case 'Z': | |
3928 { | |
3929 jboolean val = o->bool_field(field_offset); | |
3930 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
3931 } | |
3932 break; | |
3933 | |
3934 case 'B': | |
3935 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
3936 break; | |
3937 | |
3938 case 'C': | |
3939 { | |
3940 jchar val = o->char_field(field_offset); | |
3941 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3942 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3943 } | |
3944 break; | |
3945 | |
3946 case 'S': | |
3947 { | |
3948 jshort val = o->short_field(field_offset); | |
3949 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3950 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3951 } | |
3952 break; | |
3953 | |
3954 case 'I': | |
3955 { | |
3956 jint val = o->int_field(field_offset); | |
3957 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3958 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3959 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3960 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3961 } | |
3962 break; | |
3963 | |
3964 case 'F': | |
3965 { | |
3966 jfloat fval = o->float_field(field_offset); | |
3967 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
3968 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
3969 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
3970 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
3971 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
3972 } | |
3973 break; | |
3974 | |
3975 case 'J': | |
3976 { | |
3977 jlong val = o->long_field(field_offset); | |
3978 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
3979 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
3980 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
3981 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
3982 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3983 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3984 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3985 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3986 } | |
3987 break; | |
3988 | |
3989 case 'D': | |
3990 { | |
3991 jdouble dval = o->double_field(field_offset); | |
3992 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
3993 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
3994 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
3995 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
3996 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
3997 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
3998 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
3999 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
4000 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4001 } | |
4002 break; | |
4003 | |
4004 default: | |
4005 // Illegal typecode | |
4006 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4007 } | |
4008 } | |
4009 JVM_END | |
4010 | |
4011 | |
4012 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4013 | |
2177
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|
4014 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4015 // Security Note: |
4016 // The Java level wrapper will perform the necessary security check allowing | |
4017 // us to pass the NULL as the initiating class loader. | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
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|
4018 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
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diff
changeset
|
4019 |
0 | 4020 KlassHandle klass_handle(THREAD, klass); |
4021 // Check if we should initialize the class | |
4022 if (init && klass_handle->oop_is_instance()) { | |
4023 klass_handle->initialize(CHECK_NULL); | |
4024 } | |
4025 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4026 } | |
4027 | |
4028 | |
4029 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4030 | |
4031 #ifndef PRODUCT | |
4032 | |
4033 extern "C" { | |
4034 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4035 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4036 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4037 } | |
4038 | |
4039 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4040 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4041 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
4042 JVM_END | |
4043 | |
4044 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4045 JVMWrapper("JVM_AccessVMIntFlag"); | |
4046 intx v; | |
4047 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4048 *value = (jint)v; | |
4049 return result; | |
4050 JVM_END | |
4051 | |
4052 | |
4053 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4054 JVMWrapper("JVM_VMBreakPoint"); | |
4055 oop the_obj = JNIHandles::resolve(obj); | |
4056 BREAKPOINT; | |
4057 JVM_END | |
4058 | |
4059 | |
4060 #endif | |
4061 | |
4062 | |
4063 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4064 | |
4065 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4066 JVMWrapper("JVM_InvokeMethod"); | |
4067 Handle method_handle; | |
4068 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4069 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4070 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4071 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4072 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4073 jobject res = JNIHandles::make_local(env, result); | |
4074 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4075 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4076 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4077 if (java_lang_Class::is_primitive(ret_type)) { | |
4078 // Only for primitive type vm allocates memory for java object. | |
4079 // See box() method. | |
4080 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4081 } | |
4082 } | |
4083 return res; | |
4084 } else { | |
4085 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4086 } | |
4087 JVM_END | |
4088 | |
4089 | |
4090 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4091 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4092 oop constructor_mirror = JNIHandles::resolve(c); | |
4093 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4094 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4095 jobject res = JNIHandles::make_local(env, result); | |
4096 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4097 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4098 } | |
4099 return res; | |
4100 JVM_END | |
4101 | |
4102 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4103 | |
4104 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4105 JVMWrapper("JVM_SupportsCX8"); | |
4106 return VM_Version::supports_cx8(); | |
4107 JVM_END | |
4108 | |
4109 | |
4110 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4111 JVMWrapper("JVM_CX8Field"); | |
4112 jlong res; | |
4113 oop o = JNIHandles::resolve(obj); | |
4114 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4115 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4116 | |
4117 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4118 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4119 | |
4120 return res == oldVal; | |
4121 JVM_END | |
4122 | |
116
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4123 // DTrace /////////////////////////////////////////////////////////////////// |
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|
4124 |
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4125 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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|
4126 JVMWrapper("JVM_DTraceGetVersion"); |
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diff
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|
4127 return (jint)JVM_TRACING_DTRACE_VERSION; |
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diff
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|
4128 JVM_END |
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diff
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|
4129 |
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diff
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|
4130 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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diff
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|
4131 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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diff
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|
4132 JVM_DTraceProvider* providers)) |
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diff
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|
4133 JVMWrapper("JVM_DTraceActivate"); |
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diff
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|
4134 return DTraceJSDT::activate( |
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diff
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|
4135 version, module_name, providers_count, providers, CHECK_0); |
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|
4136 JVM_END |
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4137 |
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4138 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4139 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4140 return DTraceJSDT::is_probe_enabled(method); |
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4141 JVM_END |
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4142 |
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4143 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4144 JVMWrapper("JVM_DTraceDispose"); |
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4145 DTraceJSDT::dispose(handle); |
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4146 JVM_END |
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4147 |
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4148 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4149 JVMWrapper("JVM_DTraceIsSupported"); |
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4150 return DTraceJSDT::is_supported(); |
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4151 JVM_END |
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4152 |
0 | 4153 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4154 // jvmti agent threads, and JNI attaching threads are skipped) | |
4155 // See CR 6404306 regarding JNI attaching threads | |
4156 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4157 ResourceMark rm(THREAD); | |
4158 ThreadsListEnumerator tle(THREAD, false, false); | |
4159 JvmtiVMObjectAllocEventCollector oam; | |
4160 | |
4161 int num_threads = tle.num_threads(); | |
1142 | 4162 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4163 objArrayHandle threads_ah(THREAD, r); |
4164 | |
4165 for (int i = 0; i < num_threads; i++) { | |
4166 Handle h = tle.get_threadObj(i); | |
4167 threads_ah->obj_at_put(i, h()); | |
4168 } | |
4169 | |
4170 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4171 JVM_END | |
4172 | |
4173 | |
4174 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4175 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4176 // the corresponding entry in the given threads array | |
4177 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4178 JVMWrapper("JVM_DumpThreads"); | |
4179 JvmtiVMObjectAllocEventCollector oam; | |
4180 | |
4181 // Check if threads is null | |
4182 if (threads == NULL) { | |
4183 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4184 } | |
4185 | |
4186 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4187 objArrayHandle ah(THREAD, a); | |
4188 int num_threads = ah->length(); | |
4189 // check if threads is non-empty array | |
4190 if (num_threads == 0) { | |
4191 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4192 } | |
4193 | |
4194 // check if threads is not an array of objects of Thread class | |
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4195 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4196 if (k != SystemDictionary::Thread_klass()) { |
0 | 4197 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4198 } | |
4199 | |
4200 ResourceMark rm(THREAD); | |
4201 | |
4202 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4203 for (int i = 0; i < num_threads; i++) { | |
4204 oop thread_obj = ah->obj_at(i); | |
4205 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4206 thread_handle_array->append(h); | |
4207 } | |
4208 | |
4209 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4210 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4211 | |
4212 JVM_END | |
4213 | |
4214 // JVM monitoring and management support | |
4215 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4216 return Management::get_jmm_interface(version); | |
4217 JVM_END | |
4218 | |
4219 // com.sun.tools.attach.VirtualMachine agent properties support | |
4220 // | |
4221 // Initialize the agent properties with the properties maintained in the VM | |
4222 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4223 JVMWrapper("JVM_InitAgentProperties"); | |
4224 ResourceMark rm; | |
4225 | |
4226 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4227 | |
4228 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4229 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4230 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4231 return properties; | |
4232 JVM_END | |
4233 | |
4234 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4235 { | |
4236 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4237 JvmtiVMObjectAllocEventCollector oam; | |
4238 | |
4239 if (ofClass == NULL) { | |
4240 return NULL; | |
4241 } | |
4242 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4243 // Special handling for primitive objects | |
4244 if (java_lang_Class::is_primitive(mirror())) { | |
4245 return NULL; | |
4246 } | |
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4247 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4248 if (!k->oop_is_instance()) { |
0 | 4249 return NULL; |
4250 } | |
4251 instanceKlassHandle ik_h(THREAD, k); | |
4252 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4253 if (encl_method_class_idx == 0) { | |
4254 return NULL; | |
4255 } | |
1142 | 4256 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4257 objArrayHandle dest(THREAD, dest_o); |
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4258 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4259 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4260 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4261 if (encl_method_method_idx != 0) { | |
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4262 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4263 extract_low_short_from_int( |
4264 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4265 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4266 dest->obj_at_put(1, str()); | |
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4267 sym = ik_h->constants()->symbol_at( |
0 | 4268 extract_high_short_from_int( |
4269 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4270 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4271 dest->obj_at_put(2, str()); | |
4272 } | |
4273 return (jobjectArray) JNIHandles::make_local(dest()); | |
4274 } | |
4275 JVM_END | |
4276 | |
4277 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4278 jint javaThreadState)) | |
4279 { | |
4280 // If new thread states are added in future JDK and VM versions, | |
4281 // this should check if the JDK version is compatible with thread | |
4282 // states supported by the VM. Return NULL if not compatible. | |
4283 // | |
4284 // This function must map the VM java_lang_Thread::ThreadStatus | |
4285 // to the Java thread state that the JDK supports. | |
4286 // | |
4287 | |
4288 typeArrayHandle values_h; | |
4289 switch (javaThreadState) { | |
4290 case JAVA_THREAD_STATE_NEW : { | |
4291 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4292 values_h = typeArrayHandle(THREAD, r); | |
4293 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4294 break; | |
4295 } | |
4296 case JAVA_THREAD_STATE_RUNNABLE : { | |
4297 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4298 values_h = typeArrayHandle(THREAD, r); | |
4299 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4300 break; | |
4301 } | |
4302 case JAVA_THREAD_STATE_BLOCKED : { | |
4303 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4304 values_h = typeArrayHandle(THREAD, r); | |
4305 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4306 break; | |
4307 } | |
4308 case JAVA_THREAD_STATE_WAITING : { | |
4309 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4310 values_h = typeArrayHandle(THREAD, r); | |
4311 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4312 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4313 break; | |
4314 } | |
4315 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4316 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4317 values_h = typeArrayHandle(THREAD, r); | |
4318 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4319 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4320 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4321 break; | |
4322 } | |
4323 case JAVA_THREAD_STATE_TERMINATED : { | |
4324 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4325 values_h = typeArrayHandle(THREAD, r); | |
4326 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4327 break; | |
4328 } | |
4329 default: | |
4330 // Unknown state - probably incompatible JDK version | |
4331 return NULL; | |
4332 } | |
4333 | |
4334 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4335 } | |
4336 JVM_END | |
4337 | |
4338 | |
4339 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4340 jint javaThreadState, | |
4341 jintArray values)) | |
4342 { | |
4343 // If new thread states are added in future JDK and VM versions, | |
4344 // this should check if the JDK version is compatible with thread | |
4345 // states supported by the VM. Return NULL if not compatible. | |
4346 // | |
4347 // This function must map the VM java_lang_Thread::ThreadStatus | |
4348 // to the Java thread state that the JDK supports. | |
4349 // | |
4350 | |
4351 ResourceMark rm; | |
4352 | |
4353 // Check if threads is null | |
4354 if (values == NULL) { | |
4355 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4356 } | |
4357 | |
4358 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4359 typeArrayHandle values_h(THREAD, v); | |
4360 | |
4361 objArrayHandle names_h; | |
4362 switch (javaThreadState) { | |
4363 case JAVA_THREAD_STATE_NEW : { | |
4364 assert(values_h->length() == 1 && | |
4365 values_h->int_at(0) == java_lang_Thread::NEW, | |
4366 "Invalid threadStatus value"); | |
4367 | |
1142 | 4368 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4369 1, /* only 1 substate */ |
4370 CHECK_NULL); | |
4371 names_h = objArrayHandle(THREAD, r); | |
4372 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4373 names_h->obj_at_put(0, name()); | |
4374 break; | |
4375 } | |
4376 case JAVA_THREAD_STATE_RUNNABLE : { | |
4377 assert(values_h->length() == 1 && | |
4378 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4379 "Invalid threadStatus value"); | |
4380 | |
1142 | 4381 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4382 1, /* only 1 substate */ |
4383 CHECK_NULL); | |
4384 names_h = objArrayHandle(THREAD, r); | |
4385 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4386 names_h->obj_at_put(0, name()); | |
4387 break; | |
4388 } | |
4389 case JAVA_THREAD_STATE_BLOCKED : { | |
4390 assert(values_h->length() == 1 && | |
4391 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4392 "Invalid threadStatus value"); | |
4393 | |
1142 | 4394 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4395 1, /* only 1 substate */ |
4396 CHECK_NULL); | |
4397 names_h = objArrayHandle(THREAD, r); | |
4398 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4399 names_h->obj_at_put(0, name()); | |
4400 break; | |
4401 } | |
4402 case JAVA_THREAD_STATE_WAITING : { | |
4403 assert(values_h->length() == 2 && | |
4404 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4405 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4406 "Invalid threadStatus value"); | |
1142 | 4407 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4408 2, /* number of substates */ |
4409 CHECK_NULL); | |
4410 names_h = objArrayHandle(THREAD, r); | |
4411 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4412 CHECK_NULL); | |
4413 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4414 CHECK_NULL); | |
4415 names_h->obj_at_put(0, name0()); | |
4416 names_h->obj_at_put(1, name1()); | |
4417 break; | |
4418 } | |
4419 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4420 assert(values_h->length() == 3 && | |
4421 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4422 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4423 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4424 "Invalid threadStatus value"); | |
1142 | 4425 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4426 3, /* number of substates */ |
4427 CHECK_NULL); | |
4428 names_h = objArrayHandle(THREAD, r); | |
4429 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4430 CHECK_NULL); | |
4431 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4432 CHECK_NULL); | |
4433 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4434 CHECK_NULL); | |
4435 names_h->obj_at_put(0, name0()); | |
4436 names_h->obj_at_put(1, name1()); | |
4437 names_h->obj_at_put(2, name2()); | |
4438 break; | |
4439 } | |
4440 case JAVA_THREAD_STATE_TERMINATED : { | |
4441 assert(values_h->length() == 1 && | |
4442 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4443 "Invalid threadStatus value"); | |
1142 | 4444 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4445 1, /* only 1 substate */ |
4446 CHECK_NULL); | |
4447 names_h = objArrayHandle(THREAD, r); | |
4448 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4449 names_h->obj_at_put(0, name()); | |
4450 break; | |
4451 } | |
4452 default: | |
4453 // Unknown state - probably incompatible JDK version | |
4454 return NULL; | |
4455 } | |
4456 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4457 } | |
4458 JVM_END | |
4459 | |
4460 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4461 { | |
4462 memset(info, 0, sizeof(info_size)); | |
4463 | |
4464 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4465 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4466 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4467 | |
4468 // when we add a new capability in the jvm_version_info struct, we should also | |
4469 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4470 // counter defined in runtimeService.cpp. | |
4471 info->is_attachable = AttachListener::is_attach_supported(); | |
4472 #ifdef KERNEL | |
4473 info->is_kernel_jvm = 1; // true; | |
4474 #else // KERNEL | |
4475 info->is_kernel_jvm = 0; // false; | |
4476 #endif // KERNEL | |
4477 } | |
4478 JVM_END |