Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 10024:b2934877ba61
Reverted default compilation policy to 4 if Graal is the only compiler.
author | Christian Haeubl <haeubl@ssw.jku.at> |
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date | Thu, 13 Jun 2013 14:47:00 +0200 |
parents | b9a918201d47 |
children | 836a62f43af9 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
62 #include "utilities/copy.hpp" | |
63 #include "utilities/defaultStream.hpp" | |
64 #include "utilities/dtrace.hpp" | |
65 #include "utilities/events.hpp" | |
66 #include "utilities/histogram.hpp" | |
67 #include "utilities/top.hpp" | |
68 #include "utilities/utf8.hpp" | |
69 #ifdef TARGET_OS_FAMILY_linux | |
70 # include "jvm_linux.h" | |
71 #endif | |
72 #ifdef TARGET_OS_FAMILY_solaris | |
73 # include "jvm_solaris.h" | |
74 #endif | |
75 #ifdef TARGET_OS_FAMILY_windows | |
76 # include "jvm_windows.h" | |
77 #endif | |
3960 | 78 #ifdef TARGET_OS_FAMILY_bsd |
79 # include "jvm_bsd.h" | |
80 #endif | |
1972 | 81 |
0 | 82 #include <errno.h> |
83 | |
4006 | 84 #ifndef USDT2 |
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85 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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87 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 88 #endif /* !USDT2 */ |
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89 |
0 | 90 /* |
91 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
92 such ctors and calls MUST NOT come between an oop declaration/init and its | |
93 usage because if objects are move this may cause various memory stomps, bus | |
94 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
95 failures": | |
96 | |
97 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
98 JVMWrapper("JVM_GetClassDeclaredFields"); | |
99 | |
100 // Object address to be held directly in mirror & not visible to GC | |
101 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
102 | |
103 // If this ctor can hit a safepoint, moving objects around, then | |
104 ComplexConstructor foo; | |
105 | |
106 // Boom! mirror may point to JUNK instead of the intended object | |
107 (some dereference of mirror) | |
108 | |
109 // Here's another call that may block for GC, making mirror stale | |
110 MutexLocker ml(some_lock); | |
111 | |
112 // And here's an initializer that can result in a stale oop | |
113 // all in one step. | |
114 oop o = call_that_can_throw_exception(TRAPS); | |
115 | |
116 | |
117 The solution is to keep the oop declaration BELOW the ctor or function | |
118 call that might cause a GC, do another resolve to reassign the oop, or | |
119 consider use of a Handle instead of an oop so there is immunity from object | |
120 motion. But note that the "QUICK" entries below do not have a handlemark | |
121 and thus can only support use of handles passed in. | |
122 */ | |
123 | |
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124 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 125 ResourceMark rm; |
126 int line_number = -1; | |
127 const char * source_file = NULL; | |
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128 const char * trace = "explicit"; |
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129 InstanceKlass* caller = NULL; |
0 | 130 JavaThread* jthread = JavaThread::current(); |
131 if (jthread->has_last_Java_frame()) { | |
132 vframeStream vfst(jthread); | |
133 | |
134 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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135 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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136 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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137 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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138 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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139 |
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140 Method* last_caller = NULL; |
0 | 141 |
142 while (!vfst.at_end()) { | |
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143 Method* m = vfst.method(); |
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144 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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145 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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146 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 147 break; |
148 } | |
149 last_caller = m; | |
150 vfst.next(); | |
151 } | |
152 // if this is called from Class.forName0 and that is called from Class.forName, | |
153 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
154 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
155 bool found_it = false; | |
156 if (!vfst.at_end() && | |
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157 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 158 vfst.method()->name() == vmSymbols::forName0_name()) { |
159 vfst.next(); | |
160 if (!vfst.at_end() && | |
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161 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 162 vfst.method()->name() == vmSymbols::forName_name()) { |
163 vfst.next(); | |
164 found_it = true; | |
165 } | |
166 } else if (last_caller != NULL && | |
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167 last_caller->method_holder()->name() == |
0 | 168 vmSymbols::java_lang_ClassLoader() && |
169 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
170 last_caller->name() == vmSymbols::loadClass_name())) { | |
171 found_it = true; | |
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172 } else if (!vfst.at_end()) { |
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173 if (vfst.method()->is_native()) { |
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174 // JNI call |
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175 found_it = true; |
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176 } |
0 | 177 } |
178 if (found_it && !vfst.at_end()) { | |
179 // found the caller | |
180 caller = vfst.method()->method_holder(); | |
181 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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182 if (line_number == -1) { |
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183 // show method name if it's a native method |
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184 trace = vfst.method()->name_and_sig_as_C_string(); |
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185 } |
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186 Symbol* s = caller->source_file_name(); |
0 | 187 if (s != NULL) { |
188 source_file = s->as_C_string(); | |
189 } | |
190 } | |
191 } | |
192 if (caller != NULL) { | |
193 if (to_class != caller) { | |
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194 const char * from = caller->external_name(); |
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195 const char * to = to_class->external_name(); |
0 | 196 // print in a single call to reduce interleaving between threads |
197 if (source_file != NULL) { | |
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198 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 199 } else { |
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200 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 201 } |
202 } | |
203 } | |
204 } | |
205 | |
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206 void trace_class_resolution(Klass* to_class) { |
0 | 207 EXCEPTION_MARK; |
208 trace_class_resolution_impl(to_class, THREAD); | |
209 if (HAS_PENDING_EXCEPTION) { | |
210 CLEAR_PENDING_EXCEPTION; | |
211 } | |
212 } | |
213 | |
214 // Wrapper to trace JVM functions | |
215 | |
216 #ifdef ASSERT | |
217 class JVMTraceWrapper : public StackObj { | |
218 public: | |
219 JVMTraceWrapper(const char* format, ...) { | |
220 if (TraceJVMCalls) { | |
221 va_list ap; | |
222 va_start(ap, format); | |
223 tty->print("JVM "); | |
224 tty->vprint_cr(format, ap); | |
225 va_end(ap); | |
226 } | |
227 } | |
228 }; | |
229 | |
230 Histogram* JVMHistogram; | |
231 volatile jint JVMHistogram_lock = 0; | |
232 | |
233 class JVMHistogramElement : public HistogramElement { | |
234 public: | |
235 JVMHistogramElement(const char* name); | |
236 }; | |
237 | |
238 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
239 _name = elementName; | |
240 uintx count = 0; | |
241 | |
242 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
243 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
244 count +=1; | |
245 if ( (WarnOnStalledSpinLock > 0) | |
246 && (count % WarnOnStalledSpinLock == 0)) { | |
247 warning("JVMHistogram_lock seems to be stalled"); | |
248 } | |
249 } | |
250 } | |
251 | |
252 if(JVMHistogram == NULL) | |
253 JVMHistogram = new Histogram("JVM Call Counts",100); | |
254 | |
255 JVMHistogram->add_element(this); | |
256 Atomic::dec(&JVMHistogram_lock); | |
257 } | |
258 | |
259 #define JVMCountWrapper(arg) \ | |
260 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
261 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
262 | |
263 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
264 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
265 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
266 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
267 #else | |
268 #define JVMWrapper(arg1) | |
269 #define JVMWrapper2(arg1, arg2) | |
270 #define JVMWrapper3(arg1, arg2, arg3) | |
271 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
272 #endif | |
273 | |
274 | |
275 // Interface version ///////////////////////////////////////////////////////////////////// | |
276 | |
277 | |
278 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
279 return JVM_INTERFACE_VERSION; | |
280 JVM_END | |
281 | |
282 | |
283 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
284 | |
285 | |
286 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
287 JVMWrapper("JVM_CurrentTimeMillis"); | |
288 return os::javaTimeMillis(); | |
289 JVM_END | |
290 | |
291 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
292 JVMWrapper("JVM_NanoTime"); | |
293 return os::javaTimeNanos(); | |
294 JVM_END | |
295 | |
296 | |
297 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
298 jobject dst, jint dst_pos, jint length)) | |
299 JVMWrapper("JVM_ArrayCopy"); | |
300 // Check if we have null pointers | |
301 if (src == NULL || dst == NULL) { | |
302 THROW(vmSymbols::java_lang_NullPointerException()); | |
303 } | |
304 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
305 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
306 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
307 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
308 // Do copy | |
6983 | 309 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 310 JVM_END |
311 | |
312 | |
313 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
314 JavaValue r(T_OBJECT); | |
315 // public synchronized Object put(Object key, Object value); | |
316 HandleMark hm(THREAD); | |
317 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
318 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
319 JavaCalls::call_virtual(&r, | |
320 props, | |
1142 | 321 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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322 vmSymbols::put_name(), |
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323 vmSymbols::object_object_object_signature(), |
0 | 324 key_str, |
325 value_str, | |
326 THREAD); | |
327 } | |
328 | |
329 | |
330 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
331 | |
332 | |
333 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
334 JVMWrapper("JVM_InitProperties"); | |
335 ResourceMark rm; | |
336 | |
337 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
338 | |
339 // System property list includes both user set via -D option and | |
340 // jvm system specific properties. | |
341 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
342 PUTPROP(props, p->key(), p->value()); | |
343 } | |
344 | |
345 // Convert the -XX:MaxDirectMemorySize= command line flag | |
346 // to the sun.nio.MaxDirectMemorySize property. | |
347 // Do this after setting user properties to prevent people | |
348 // from setting the value with a -D option, as requested. | |
349 { | |
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350 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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351 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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352 } else { |
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353 char as_chars[256]; |
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354 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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355 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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356 } |
0 | 357 } |
358 | |
359 // JVM monitoring and management support | |
360 // Add the sun.management.compiler property for the compiler's name | |
361 { | |
362 #undef CSIZE | |
363 #if defined(_LP64) || defined(_WIN64) | |
364 #define CSIZE "64-Bit " | |
365 #else | |
366 #define CSIZE | |
367 #endif // 64bit | |
368 | |
369 #ifdef TIERED | |
370 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
371 #else | |
372 #if defined(COMPILER1) | |
373 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
374 #elif defined(COMPILER2) | |
375 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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376 #elif defined(GRAAL) |
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377 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
0 | 378 #else |
379 const char* compiler_name = ""; | |
380 #endif // compilers | |
381 #endif // TIERED | |
382 | |
383 if (*compiler_name != '\0' && | |
384 (Arguments::mode() != Arguments::_int)) { | |
385 PUTPROP(props, "sun.management.compiler", compiler_name); | |
386 } | |
387 } | |
388 | |
389 return properties; | |
390 JVM_END | |
391 | |
392 | |
393 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
394 | |
395 extern volatile jint vm_created; | |
396 | |
397 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
398 if (vm_created != 0 && (code == 0)) { | |
399 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
400 Universe::run_finalizers_on_exit(); | |
401 } | |
402 before_exit(thread); | |
403 vm_exit(code); | |
404 JVM_END | |
405 | |
406 | |
407 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
408 before_exit(thread); | |
409 vm_exit(code); | |
410 JVM_END | |
411 | |
412 | |
413 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
414 register_on_exit_function(func); | |
415 JVM_END | |
416 | |
417 | |
418 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
419 JVMWrapper("JVM_GC"); | |
420 if (!DisableExplicitGC) { | |
421 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
422 } | |
423 JVM_END | |
424 | |
425 | |
426 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
427 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
428 return Universe::heap()->millis_since_last_gc(); | |
429 JVM_END | |
430 | |
431 | |
432 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
433 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
434 JVM_END | |
435 | |
436 | |
437 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
438 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
439 JVM_END | |
440 | |
441 static inline jlong convert_size_t_to_jlong(size_t val) { | |
442 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
443 NOT_LP64 (return (jlong)val;) | |
444 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
445 } | |
446 | |
447 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
448 JVMWrapper("JVM_TotalMemory"); | |
449 size_t n = Universe::heap()->capacity(); | |
450 return convert_size_t_to_jlong(n); | |
451 JVM_END | |
452 | |
453 | |
454 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
455 JVMWrapper("JVM_FreeMemory"); | |
456 CollectedHeap* ch = Universe::heap(); | |
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457 size_t n; |
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458 { |
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459 MutexLocker x(Heap_lock); |
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460 n = ch->capacity() - ch->used(); |
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461 } |
0 | 462 return convert_size_t_to_jlong(n); |
463 JVM_END | |
464 | |
465 | |
466 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
467 JVMWrapper("JVM_MaxMemory"); | |
468 size_t n = Universe::heap()->max_capacity(); | |
469 return convert_size_t_to_jlong(n); | |
470 JVM_END | |
471 | |
472 | |
473 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
474 JVMWrapper("JVM_ActiveProcessorCount"); | |
475 return os::active_processor_count(); | |
476 JVM_END | |
477 | |
478 | |
479 | |
480 // java.lang.Throwable ////////////////////////////////////////////////////// | |
481 | |
482 | |
483 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
484 JVMWrapper("JVM_FillInStackTrace"); | |
485 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
486 java_lang_Throwable::fill_in_stack_trace(exception); | |
487 JVM_END | |
488 | |
489 | |
490 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
491 JVMWrapper("JVM_GetStackTraceDepth"); | |
492 oop exception = JNIHandles::resolve(throwable); | |
493 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
494 JVM_END | |
495 | |
496 | |
497 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
498 JVMWrapper("JVM_GetStackTraceElement"); | |
499 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
500 oop exception = JNIHandles::resolve(throwable); | |
501 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
502 return JNIHandles::make_local(env, element); | |
503 JVM_END | |
504 | |
505 | |
506 // java.lang.Object /////////////////////////////////////////////// | |
507 | |
508 | |
509 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
510 JVMWrapper("JVM_IHashCode"); | |
511 // as implemented in the classic virtual machine; return 0 if object is NULL | |
512 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
513 JVM_END | |
514 | |
515 | |
516 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
517 JVMWrapper("JVM_MonitorWait"); | |
518 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
519 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
520 if (JvmtiExport::should_post_monitor_wait()) { | |
521 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
522 } | |
523 ObjectSynchronizer::wait(obj, ms, CHECK); | |
524 JVM_END | |
525 | |
526 | |
527 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
528 JVMWrapper("JVM_MonitorNotify"); | |
529 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
530 ObjectSynchronizer::notify(obj, CHECK); | |
531 JVM_END | |
532 | |
533 | |
534 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
535 JVMWrapper("JVM_MonitorNotifyAll"); | |
536 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
537 ObjectSynchronizer::notifyall(obj, CHECK); | |
538 JVM_END | |
539 | |
540 | |
541 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
542 JVMWrapper("JVM_Clone"); | |
543 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
544 const KlassHandle klass (THREAD, obj->klass()); | |
545 JvmtiVMObjectAllocEventCollector oam; | |
546 | |
547 #ifdef ASSERT | |
548 // Just checking that the cloneable flag is set correct | |
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549 if (obj->is_array()) { |
0 | 550 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
551 } else { | |
552 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 553 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 554 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
555 } | |
556 #endif | |
557 | |
558 // Check if class of obj supports the Cloneable interface. | |
559 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
560 if (!klass->is_cloneable()) { | |
561 ResourceMark rm(THREAD); | |
562 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
563 } | |
564 | |
565 // Make shallow object copy | |
566 const int size = obj->size(); | |
567 oop new_obj = NULL; | |
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568 if (obj->is_array()) { |
0 | 569 const int length = ((arrayOop)obj())->length(); |
570 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
571 } else { | |
572 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
573 } | |
574 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
575 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
576 // be suspended in the middle of copying the pointer and end up with parts | |
577 // of two different pointers in the field. Subsequent dereferences will crash. | |
578 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
579 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
580 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
581 // The same is true of StubRoutines::object_copy and the various oop_copy | |
582 // variants, and of the code generated by the inline_native_clone intrinsic. | |
583 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
584 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
585 (size_t)align_object_size(size) / HeapWordsPerLong); | |
586 // Clear the header | |
587 new_obj->init_mark(); | |
588 | |
589 // Store check (mark entire object and let gc sort it out) | |
590 BarrierSet* bs = Universe::heap()->barrier_set(); | |
591 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
592 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
593 | |
594 // Caution: this involves a java upcall, so the clone should be | |
595 // "gc-robust" by this stage. | |
596 if (klass->has_finalizer()) { | |
597 assert(obj->is_instance(), "should be instanceOop"); | |
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598 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 599 } |
600 | |
601 return JNIHandles::make_local(env, oop(new_obj)); | |
602 JVM_END | |
603 | |
604 // java.lang.Compiler //////////////////////////////////////////////////// | |
605 | |
606 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
607 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
608 // functions are all silently ignored unless JVM warnings are printed. | |
609 | |
610 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
611 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
612 JVM_END | |
613 | |
614 | |
615 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
616 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
617 return JNI_FALSE; | |
618 JVM_END | |
619 | |
620 | |
621 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
622 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
623 return JNI_FALSE; | |
624 JVM_END | |
625 | |
626 | |
627 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
628 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
629 return JNI_FALSE; | |
630 JVM_END | |
631 | |
632 | |
633 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
634 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
635 return NULL; | |
636 JVM_END | |
637 | |
638 | |
639 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
640 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
641 JVM_END | |
642 | |
643 | |
644 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
645 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
646 JVM_END | |
647 | |
648 | |
649 | |
650 // Error message support ////////////////////////////////////////////////////// | |
651 | |
652 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
653 JVMWrapper("JVM_GetLastErrorString"); | |
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654 return (jint)os::lasterror(buf, len); |
0 | 655 JVM_END |
656 | |
657 | |
658 // java.io.File /////////////////////////////////////////////////////////////// | |
659 | |
660 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
661 JVMWrapper2("JVM_NativePath (%s)", path); | |
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662 return os::native_path(path); |
0 | 663 JVM_END |
664 | |
665 | |
666 // Misc. class handling /////////////////////////////////////////////////////////// | |
667 | |
668 | |
669 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
670 JVMWrapper("JVM_GetCallerClass"); | |
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671 |
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672 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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673 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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674 Klass* k = thread->security_get_caller_class(depth); |
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675 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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676 } else { |
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677 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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678 assert(depth == -1, "wrong handshake depth"); |
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679 } |
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680 |
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681 // Getting the class of the caller frame. |
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682 // |
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683 // The call stack at this point looks something like this: |
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684 // |
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685 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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686 // [1] [ @CallerSensitive API.method ] |
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687 // [.] [ (skipped intermediate frames) ] |
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688 // [n] [ caller ] |
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689 vframeStream vfst(thread); |
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690 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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691 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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692 Method* m = vfst.method(); |
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693 assert(m != NULL, "sanity"); |
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694 switch (n) { |
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695 case 0: |
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696 // This must only be called from Reflection.getCallerClass |
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697 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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698 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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699 } |
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700 // fall-through |
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701 case 1: |
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702 // Frame 0 and 1 must be caller sensitive. |
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703 if (!m->caller_sensitive()) { |
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704 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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705 } |
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706 break; |
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707 default: |
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708 if (!m->is_ignored_by_security_stack_walk()) { |
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709 // We have reached the desired frame; return the holder class. |
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710 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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711 } |
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712 break; |
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713 } |
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714 } |
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715 return NULL; |
0 | 716 JVM_END |
717 | |
718 | |
719 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
720 JVMWrapper("JVM_FindPrimitiveClass"); | |
721 oop mirror = NULL; | |
722 BasicType t = name2type(utf); | |
723 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
724 mirror = Universe::java_mirror(t); | |
725 } | |
726 if (mirror == NULL) { | |
727 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
728 } else { | |
729 return (jclass) JNIHandles::make_local(env, mirror); | |
730 } | |
731 JVM_END | |
732 | |
733 | |
734 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
735 JVMWrapper("JVM_ResolveClass"); | |
736 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
737 JVM_END | |
738 | |
878
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739 |
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740 // Returns a class loaded by the bootstrap class loader; or null |
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741 // if not found. ClassNotFoundException is not thrown. |
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742 // |
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743 // Rationale behind JVM_FindClassFromBootLoader |
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744 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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745 // b> because of (a) java.dll has a direct dependecy on the unexported |
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746 // private symbol "_JVM_FindClassFromClassLoader@20". |
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747 // c> the launcher cannot use the private symbol as it dynamically opens |
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748 // the entry point, so if something changes, the launcher will fail |
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749 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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750 // stable exported interface. |
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751 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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752 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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753 // JVM_FindClassFromClassLoader and will not be backward compatible |
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754 // with older JDKs. |
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755 // Thus a public/stable exported entry point is the right solution, |
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756 // public here means public in linker semantics, and is exported only |
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757 // to the JDK, and is not intended to be a public API. |
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758 |
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759 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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760 const char* name)) |
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761 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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762 |
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763 // Java libraries should ensure that name is never null... |
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764 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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765 // It's impossible to create this class; the name cannot fit |
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766 // into the constant pool. |
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767 return NULL; |
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768 } |
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769 |
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770 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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771 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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772 if (k == NULL) { |
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773 return NULL; |
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774 } |
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775 |
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776 if (TraceClassResolution) { |
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777 trace_class_resolution(k); |
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778 } |
6983 | 779 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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780 JVM_END |
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781 |
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782 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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783 jboolean init, jobject loader, |
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784 jboolean throwError)) |
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785 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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786 throwError ? "error" : "exception"); |
388 | 787 // Java libraries should ensure that name is never null... |
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788 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 789 // It's impossible to create this class; the name cannot fit |
790 // into the constant pool. | |
791 if (throwError) { | |
792 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
793 } else { | |
794 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
795 } | |
796 } | |
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797 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 798 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
799 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
800 Handle(), throwError, THREAD); | |
801 | |
802 if (TraceClassResolution && result != NULL) { | |
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803 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 804 } |
805 return result; | |
0 | 806 JVM_END |
807 | |
808 | |
809 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
810 jboolean init, jclass from)) | |
811 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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812 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 813 // It's impossible to create this class; the name cannot fit |
814 // into the constant pool. | |
815 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
816 } | |
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817 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 818 oop from_class_oop = JNIHandles::resolve(from); |
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819 Klass* from_class = (from_class_oop == NULL) |
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820 ? (Klass*)NULL |
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821 : java_lang_Class::as_Klass(from_class_oop); |
0 | 822 oop class_loader = NULL; |
823 oop protection_domain = NULL; | |
824 if (from_class != NULL) { | |
6983 | 825 class_loader = from_class->class_loader(); |
826 protection_domain = from_class->protection_domain(); | |
0 | 827 } |
828 Handle h_loader(THREAD, class_loader); | |
829 Handle h_prot (THREAD, protection_domain); | |
830 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
831 h_prot, true, thread); | |
832 | |
833 if (TraceClassResolution && result != NULL) { | |
834 // this function is generally only used for class loading during verification. | |
835 ResourceMark rm; | |
836 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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837 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 838 const char * from_name = from_class->external_name(); |
0 | 839 |
840 oop mirror = JNIHandles::resolve_non_null(result); | |
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841 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 842 const char * to = to_class->external_name(); |
0 | 843 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
844 } | |
845 | |
846 return result; | |
847 JVM_END | |
848 | |
849 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
850 if (loader.is_null()) { | |
851 return; | |
852 } | |
853 | |
854 // check whether the current caller thread holds the lock or not. | |
855 // If not, increment the corresponding counter | |
856 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
857 ObjectSynchronizer::owner_self) { | |
858 counter->inc(); | |
859 } | |
860 } | |
861 | |
862 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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863 // and JVM_DefineClassWithSourceCond() |
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864 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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865 jobject loader, const jbyte *buf, |
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866 jsize len, jobject pd, const char *source, |
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867 jboolean verify, TRAPS) { |
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868 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 869 |
875
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870 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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871 JavaThread* jt = (JavaThread*) THREAD; |
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872 |
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873 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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874 ClassLoader::perf_define_appclass_selftime(), |
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875 ClassLoader::perf_define_appclasses(), |
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876 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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877 jt->get_thread_stat()->perf_timers_addr(), |
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|
878 PerfClassTraceTime::DEFINE_CLASS); |
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|
879 |
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880 if (UsePerfData) { |
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881 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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|
882 } |
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883 |
0 | 884 // Since exceptions can be thrown, class initialization can take place |
885 // if name is NULL no check for class name in .class stream has to be made. | |
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886 TempNewSymbol class_name = NULL; |
0 | 887 if (name != NULL) { |
888 const int str_len = (int)strlen(name); | |
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889 if (str_len > Symbol::max_length()) { |
0 | 890 // It's impossible to create this class; the name cannot fit |
891 // into the constant pool. | |
892 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
893 } | |
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894 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 895 } |
896 | |
897 ResourceMark rm(THREAD); | |
898 ClassFileStream st((u1*) buf, len, (char *)source); | |
899 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
900 if (UsePerfData) { | |
901 is_lock_held_by_thread(class_loader, | |
902 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
903 THREAD); | |
904 } | |
905 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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906 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 907 protection_domain, &st, |
973
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908 verify != 0, |
0 | 909 CHECK_NULL); |
910 | |
911 if (TraceClassResolution && k != NULL) { | |
912 trace_class_resolution(k); | |
913 } | |
914 | |
6983 | 915 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 916 } |
917 | |
918 | |
919 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
920 JVMWrapper2("JVM_DefineClass %s", name); | |
921 | |
973
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922 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 923 JVM_END |
924 | |
925 | |
926 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
927 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
928 | |
973
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929 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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930 JVM_END |
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931 |
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932 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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933 jobject loader, const jbyte *buf, |
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934 jsize len, jobject pd, |
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935 const char *source, jboolean verify)) |
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936 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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937 |
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938 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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939 JVM_END |
0 | 940 |
941 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
942 JVMWrapper("JVM_FindLoadedClass"); | |
943 ResourceMark rm(THREAD); | |
944 | |
945 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
946 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
947 | |
948 const char* str = java_lang_String::as_utf8_string(string()); | |
949 // Sanity check, don't expect null | |
950 if (str == NULL) return NULL; | |
951 | |
952 const int str_len = (int)strlen(str); | |
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953 if (str_len > Symbol::max_length()) { |
0 | 954 // It's impossible to create this class; the name cannot fit |
955 // into the constant pool. | |
956 return NULL; | |
957 } | |
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958 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 959 |
960 // Security Note: | |
961 // The Java level wrapper will perform the necessary security check allowing | |
962 // us to pass the NULL as the initiating class loader. | |
963 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
964 if (UsePerfData) { | |
965 is_lock_held_by_thread(h_loader, | |
966 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
967 THREAD); | |
968 } | |
969 | |
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970 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 971 h_loader, |
972 Handle(), | |
973 CHECK_NULL); | |
974 | |
975 return (k == NULL) ? NULL : | |
6983 | 976 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 977 JVM_END |
978 | |
979 | |
980 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
981 | |
982 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
983 assert (cls != NULL, "illegal class"); | |
984 JVMWrapper("JVM_GetClassName"); | |
985 JvmtiVMObjectAllocEventCollector oam; | |
986 ResourceMark rm(THREAD); | |
987 const char* name; | |
988 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
989 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
990 } else { | |
991 // Consider caching interned string in Klass | |
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992 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 993 assert(k->is_klass(), "just checking"); |
6983 | 994 name = k->external_name(); |
0 | 995 } |
996 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
997 return (jstring) JNIHandles::make_local(env, result); | |
998 JVM_END | |
999 | |
1000 | |
1001 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1002 JVMWrapper("JVM_GetClassInterfaces"); | |
1003 JvmtiVMObjectAllocEventCollector oam; | |
1004 oop mirror = JNIHandles::resolve_non_null(cls); | |
1005 | |
1006 // Special handling for primitive objects | |
1007 if (java_lang_Class::is_primitive(mirror)) { | |
1008 // Primitive objects does not have any interfaces | |
1142 | 1009 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1010 return (jobjectArray) JNIHandles::make_local(env, r); |
1011 } | |
1012 | |
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1013 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1014 // Figure size of result array |
1015 int size; | |
1016 if (klass->oop_is_instance()) { | |
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1017 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1018 } else { |
1019 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1020 size = 2; | |
1021 } | |
1022 | |
1023 // Allocate result array | |
1142 | 1024 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1025 objArrayHandle result (THREAD, r); |
1026 // Fill in result | |
1027 if (klass->oop_is_instance()) { | |
1028 // Regular instance klass, fill in all local interfaces | |
1029 for (int index = 0; index < size; index++) { | |
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1030 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1031 result->obj_at_put(index, k->java_mirror()); |
0 | 1032 } |
1033 } else { | |
1034 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1035 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1036 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1037 } |
1038 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1039 JVM_END | |
1040 | |
1041 | |
1042 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1043 JVMWrapper("JVM_GetClassLoader"); | |
1044 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1045 return NULL; | |
1046 } | |
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1047 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1048 oop loader = k->class_loader(); |
0 | 1049 return JNIHandles::make_local(env, loader); |
1050 JVM_END | |
1051 | |
1052 | |
1053 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1054 JVMWrapper("JVM_IsInterface"); | |
1055 oop mirror = JNIHandles::resolve_non_null(cls); | |
1056 if (java_lang_Class::is_primitive(mirror)) { | |
1057 return JNI_FALSE; | |
1058 } | |
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1059 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1060 jboolean result = k->is_interface(); |
1061 assert(!result || k->oop_is_instance(), | |
0 | 1062 "all interfaces are instance types"); |
1063 // The compiler intrinsic for isInterface tests the | |
1064 // Klass::_access_flags bits in the same way. | |
1065 return result; | |
1066 JVM_END | |
1067 | |
1068 | |
1069 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1070 JVMWrapper("JVM_GetClassSigners"); | |
1071 JvmtiVMObjectAllocEventCollector oam; | |
1072 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1073 // There are no signers for primitive types | |
1074 return NULL; | |
1075 } | |
1076 | |
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1077 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1078 objArrayOop signers = NULL; |
6983 | 1079 if (k->oop_is_instance()) { |
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1080 signers = InstanceKlass::cast(k)->signers(); |
0 | 1081 } |
1082 | |
1083 // If there are no signers set in the class, or if the class | |
1084 // is an array, return NULL. | |
1085 if (signers == NULL) return NULL; | |
1086 | |
1087 // copy of the signers array | |
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1088 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1089 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1090 for (int index = 0; index < signers->length(); index++) { | |
1091 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1092 } | |
1093 | |
1094 // return the copy | |
1095 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1096 JVM_END | |
1097 | |
1098 | |
1099 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1100 JVMWrapper("JVM_SetClassSigners"); | |
1101 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1102 // This call is ignored for primitive types and arrays. | |
1103 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1104 // be called with an array. Only the bootstrap loader creates arrays. | |
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1105 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1106 if (k->oop_is_instance()) { |
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1107 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
0 | 1108 } |
1109 } | |
1110 JVM_END | |
1111 | |
1112 | |
1113 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1114 JVMWrapper("JVM_GetProtectionDomain"); | |
1115 if (JNIHandles::resolve(cls) == NULL) { | |
1116 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1117 } | |
1118 | |
1119 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1120 // Primitive types does not have a protection domain. | |
1121 return NULL; | |
1122 } | |
1123 | |
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1124 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1125 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
0 | 1126 JVM_END |
1127 | |
1128 | |
1129 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1130 // still defined in core libraries as of 1.5. | |
1131 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1132 JVMWrapper("JVM_SetProtectionDomain"); | |
1133 if (JNIHandles::resolve(cls) == NULL) { | |
1134 THROW(vmSymbols::java_lang_NullPointerException()); | |
1135 } | |
1136 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1137 // Call is ignored for primitive types | |
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1138 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1139 |
1140 // cls won't be an array, as this called only from ClassLoader.defineClass | |
6983 | 1141 if (k->oop_is_instance()) { |
0 | 1142 oop pd = JNIHandles::resolve(protection_domain); |
1143 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1144 InstanceKlass::cast(k)->set_protection_domain(pd); |
0 | 1145 } |
1146 } | |
1147 JVM_END | |
1148 | |
1149 | |
1150 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1151 JVMWrapper("JVM_DoPrivileged"); | |
1152 | |
1153 if (action == NULL) { | |
1154 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1155 } | |
1156 | |
1157 // Stack allocated list of privileged stack elements | |
1158 PrivilegedElement pi; | |
1159 | |
1160 // Check that action object understands "Object run()" | |
1161 Handle object (THREAD, JNIHandles::resolve(action)); | |
1162 | |
1163 // get run() method | |
6983 | 1164 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1165 vmSymbols::run_method_name(), |
1166 vmSymbols::void_object_signature()); | |
1167 methodHandle m (THREAD, m_oop); | |
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1168 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1169 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1170 } | |
1171 | |
1172 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1173 vframeStream vfst(thread); | |
1174 vfst.security_get_caller_frame(1); | |
1175 | |
1176 if (!vfst.at_end()) { | |
1177 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1178 thread->set_privileged_stack_top(&pi); | |
1179 } | |
1180 | |
1181 | |
1182 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1183 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1184 Handle pending_exception; | |
1185 JavaValue result(T_OBJECT); | |
1186 JavaCallArguments args(object); | |
1187 JavaCalls::call(&result, m, &args, THREAD); | |
1188 | |
1189 // done with action, remove ourselves from the list | |
1190 if (!vfst.at_end()) { | |
1191 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1192 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1193 } | |
1194 | |
1195 if (HAS_PENDING_EXCEPTION) { | |
1196 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1197 CLEAR_PENDING_EXCEPTION; | |
1198 | |
1142 | 1199 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1200 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1201 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1202 JavaCallArguments args(pending_exception); | |
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1203 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1204 vmSymbols::exception_void_signature(), |
0 | 1205 &args); |
1206 } | |
1207 } | |
1208 | |
1209 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1210 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1211 JVM_END | |
1212 | |
1213 | |
1214 // Returns the inherited_access_control_context field of the running thread. | |
1215 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1216 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1217 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1218 return JNIHandles::make_local(env, result); | |
1219 JVM_END | |
1220 | |
1221 class RegisterArrayForGC { | |
1222 private: | |
1223 JavaThread *_thread; | |
1224 public: | |
1225 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1226 _thread = thread; | |
1227 _thread->register_array_for_gc(array); | |
1228 } | |
1229 | |
1230 ~RegisterArrayForGC() { | |
1231 _thread->register_array_for_gc(NULL); | |
1232 } | |
1233 }; | |
1234 | |
1235 | |
1236 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1237 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1238 if (!UsePrivilegedStack) return NULL; | |
1239 | |
1240 ResourceMark rm(THREAD); | |
1241 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1242 JvmtiVMObjectAllocEventCollector oam; | |
1243 | |
1244 // count the protection domains on the execution stack. We collapse | |
1245 // duplicate consecutive protection domains into a single one, as | |
1246 // well as stopping when we hit a privileged frame. | |
1247 | |
1248 // Use vframeStream to iterate through Java frames | |
1249 vframeStream vfst(thread); | |
1250 | |
1251 oop previous_protection_domain = NULL; | |
1252 Handle privileged_context(thread, NULL); | |
1253 bool is_privileged = false; | |
1254 oop protection_domain = NULL; | |
1255 | |
1256 for(; !vfst.at_end(); vfst.next()) { | |
1257 // get method of frame | |
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1258 Method* method = vfst.method(); |
0 | 1259 intptr_t* frame_id = vfst.frame_id(); |
1260 | |
1261 // check the privileged frames to see if we have a match | |
1262 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1263 // this frame is privileged | |
1264 is_privileged = true; | |
1265 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1266 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1267 } else { | |
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1268 protection_domain = method->method_holder()->protection_domain(); |
0 | 1269 } |
1270 | |
1271 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1272 local_array->push(protection_domain); | |
1273 previous_protection_domain = protection_domain; | |
1274 } | |
1275 | |
1276 if (is_privileged) break; | |
1277 } | |
1278 | |
1279 | |
1280 // either all the domains on the stack were system domains, or | |
1281 // we had a privileged system domain | |
1282 if (local_array->is_empty()) { | |
1283 if (is_privileged && privileged_context.is_null()) return NULL; | |
1284 | |
1285 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1286 return JNIHandles::make_local(env, result); | |
1287 } | |
1288 | |
1289 // the resource area must be registered in case of a gc | |
1290 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1291 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1292 local_array->length(), CHECK_NULL); |
1293 objArrayHandle h_context(thread, context); | |
1294 for (int index = 0; index < local_array->length(); index++) { | |
1295 h_context->obj_at_put(index, local_array->at(index)); | |
1296 } | |
1297 | |
1298 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1299 | |
1300 return JNIHandles::make_local(env, result); | |
1301 JVM_END | |
1302 | |
1303 | |
1304 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1305 JVMWrapper("JVM_IsArrayClass"); | |
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1306 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1307 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1308 JVM_END |
1309 | |
1310 | |
1311 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1312 JVMWrapper("JVM_IsPrimitiveClass"); | |
1313 oop mirror = JNIHandles::resolve_non_null(cls); | |
1314 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1315 JVM_END | |
1316 | |
1317 | |
1318 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1319 JVMWrapper("JVM_GetComponentType"); | |
1320 oop mirror = JNIHandles::resolve_non_null(cls); | |
1321 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1322 return (jclass) JNIHandles::make_local(env, result); | |
1323 JVM_END | |
1324 | |
1325 | |
1326 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1327 JVMWrapper("JVM_GetClassModifiers"); | |
1328 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1329 // Primitive type | |
1330 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1331 } | |
1332 | |
6983 | 1333 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1334 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1335 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1336 return k->modifier_flags(); | |
1337 JVM_END | |
1338 | |
1339 | |
1340 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1341 | |
1342 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1343 JvmtiVMObjectAllocEventCollector oam; | |
1344 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1345 // of an InstanceKlass |
0 | 1346 |
1347 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1348 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1349 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1350 return (jobjectArray)JNIHandles::make_local(env, result); |
1351 } | |
1352 | |
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1353 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1354 InnerClassesIterator iter(k); |
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1355 |
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1356 if (iter.length() == 0) { |
0 | 1357 // Neither an inner nor outer class |
1142 | 1358 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1359 return (jobjectArray)JNIHandles::make_local(env, result); |
1360 } | |
1361 | |
1362 // find inner class info | |
1363 constantPoolHandle cp(thread, k->constants()); | |
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1364 int length = iter.length(); |
0 | 1365 |
1366 // Allocate temp. result array | |
1142 | 1367 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1368 objArrayHandle result (THREAD, r); |
1369 int members = 0; | |
1370 | |
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1371 for (; !iter.done(); iter.next()) { |
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1372 int ioff = iter.inner_class_info_index(); |
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1373 int ooff = iter.outer_class_info_index(); |
0 | 1374 |
1375 if (ioff != 0 && ooff != 0) { | |
1376 // Check to see if the name matches the class we're looking for | |
1377 // before attempting to find the class. | |
1378 if (cp->klass_name_at_matches(k, ooff)) { | |
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1379 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1380 if (outer_klass == k()) { |
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1381 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1382 instanceKlassHandle inner_klass (THREAD, ik); |
1383 | |
1384 // Throws an exception if outer klass has not declared k as | |
1385 // an inner klass | |
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1386 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1387 |
1388 result->obj_at_put(members, inner_klass->java_mirror()); | |
1389 members++; | |
1390 } | |
1391 } | |
1392 } | |
1393 } | |
1394 | |
1395 if (members != length) { | |
1396 // Return array of right length | |
1142 | 1397 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1398 for(int i = 0; i < members; i++) { |
1399 res->obj_at_put(i, result->obj_at(i)); | |
1400 } | |
1401 return (jobjectArray)JNIHandles::make_local(env, res); | |
1402 } | |
1403 | |
1404 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1405 JVM_END | |
1406 | |
1407 | |
1408 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1409 { |
0 | 1410 // ofClass is a reference to a java_lang_Class object. |
1411 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1412 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1413 return NULL; |
1414 } | |
1415 | |
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1416 bool inner_is_member = false; |
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1417 Klass* outer_klass |
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1418 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1419 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1420 if (outer_klass == NULL) return NULL; // already a top-level class |
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1421 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1422 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
665
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1423 } |
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1424 JVM_END |
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1425 |
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1426 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1427 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1428 bool* inner_is_member, |
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1429 TRAPS) { |
665
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1430 Thread* thread = THREAD; |
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1431 InnerClassesIterator iter(k); |
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1432 if (iter.length() == 0) { |
0 | 1433 // No inner class info => no declaring class |
1434 return NULL; | |
1435 } | |
1436 | |
1437 constantPoolHandle i_cp(thread, k->constants()); | |
1438 | |
1439 bool found = false; | |
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1440 Klass* ok; |
0 | 1441 instanceKlassHandle outer_klass; |
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1442 *inner_is_member = false; |
0 | 1443 |
1444 // Find inner_klass attribute | |
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1445 for (; !iter.done() && !found; iter.next()) { |
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1446 int ioff = iter.inner_class_info_index(); |
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1447 int ooff = iter.outer_class_info_index(); |
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1448 int noff = iter.inner_name_index(); |
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1449 if (ioff != 0) { |
0 | 1450 // Check to see if the name matches the class we're looking for |
1451 // before attempting to find the class. | |
1452 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1453 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1454 found = (k() == inner_klass); |
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1455 if (found && ooff != 0) { |
0 | 1456 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1457 outer_klass = instanceKlassHandle(thread, ok); | |
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1458 *inner_is_member = true; |
0 | 1459 } |
1460 } | |
1461 } | |
1462 } | |
1463 | |
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1464 if (found && outer_klass.is_null()) { |
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1465 // It may be anonymous; try for that. |
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1466 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1467 if (encl_method_class_idx != 0) { |
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1468 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1469 outer_klass = instanceKlassHandle(thread, ok); |
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1470 *inner_is_member = false; |
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1471 } |
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1472 } |
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1473 |
0 | 1474 // If no inner class attribute found for this class. |
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1475 if (outer_klass.is_null()) return NULL; |
0 | 1476 |
1477 // Throws an exception if outer klass has not declared k as an inner klass | |
665
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1478 // We need evidence that each klass knows about the other, or else |
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1479 // the system could allow a spoof of an inner class to gain access rights. |
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1480 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1481 return outer_klass(); |
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1482 } |
0 | 1483 |
1484 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1485 assert (cls != NULL, "illegal class"); | |
1486 JVMWrapper("JVM_GetClassSignature"); | |
1487 JvmtiVMObjectAllocEventCollector oam; | |
1488 ResourceMark rm(THREAD); | |
1489 // Return null for arrays and primatives | |
1490 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1491 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1492 if (k->oop_is_instance()) { |
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1493 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1494 if (sym == NULL) return NULL; |
0 | 1495 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1496 return (jstring) JNIHandles::make_local(env, str()); | |
1497 } | |
1498 } | |
1499 return NULL; | |
1500 JVM_END | |
1501 | |
1502 | |
1503 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1504 assert (cls != NULL, "illegal class"); | |
1505 JVMWrapper("JVM_GetClassAnnotations"); | |
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1506 |
0 | 1507 // Return null for arrays and primitives |
1508 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1509 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1510 if (k->oop_is_instance()) { |
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1511 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1512 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1513 } |
1514 } | |
1515 return NULL; | |
1516 JVM_END | |
1517 | |
1518 | |
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1519 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1520 // some of this code was adapted from from jni_FromReflectedField |
1521 | |
1522 oop reflected = JNIHandles::resolve_non_null(field); | |
1523 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1524 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1525 int slot = java_lang_reflect_Field::slot(reflected); |
1526 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1527 | |
1528 KlassHandle kh(THREAD, k); | |
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1529 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1530 |
1531 if (modifiers & JVM_ACC_STATIC) { | |
1532 // for static fields we only look in the current class | |
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1533 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1534 assert(false, "cannot find static field"); |
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1535 return false; |
0 | 1536 } |
1537 } else { | |
1538 // for instance fields we start with the current class and work | |
1539 // our way up through the superclass chain | |
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1540 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1541 assert(false, "cannot find instance field"); |
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1542 return false; |
0 | 1543 } |
1544 } | |
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1545 return true; |
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1546 } |
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1547 |
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1548 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1549 // field is a handle to a java.lang.reflect.Field object |
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1550 assert(field != NULL, "illegal field"); |
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1551 JVMWrapper("JVM_GetFieldAnnotations"); |
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1552 |
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1553 fieldDescriptor fd; |
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1554 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1555 if (!gotFd) { |
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1556 return NULL; |
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1557 } |
0 | 1558 |
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1559 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1560 JVM_END |
1561 | |
1562 | |
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1563 static Method* jvm_get_method_common(jobject method) { |
0 | 1564 // some of this code was adapted from from jni_FromReflectedMethod |
1565 | |
1566 oop reflected = JNIHandles::resolve_non_null(method); | |
1567 oop mirror = NULL; | |
1568 int slot = 0; | |
1569 | |
1142 | 1570 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1571 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1572 slot = java_lang_reflect_Constructor::slot(reflected); | |
1573 } else { | |
1142 | 1574 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1575 "wrong type"); |
1576 mirror = java_lang_reflect_Method::clazz(reflected); | |
1577 slot = java_lang_reflect_Method::slot(reflected); | |
1578 } | |
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1579 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1580 |
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1581 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1582 assert(m != NULL, "cannot find method"); |
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1583 return m; // caller has to deal with NULL in product mode |
0 | 1584 } |
1585 | |
1586 | |
1587 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1588 JVMWrapper("JVM_GetMethodAnnotations"); | |
1589 | |
1590 // method is a handle to a java.lang.reflect.Method object | |
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1591 Method* m = jvm_get_method_common(method); |
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1592 if (m == NULL) { |
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1593 return NULL; |
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1594 } |
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1595 |
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1596 return (jbyteArray) JNIHandles::make_local(env, |
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1597 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1598 JVM_END |
1599 | |
1600 | |
1601 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1602 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1603 | |
1604 // method is a handle to a java.lang.reflect.Method object | |
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1605 Method* m = jvm_get_method_common(method); |
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1606 if (m == NULL) { |
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1607 return NULL; |
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1608 } |
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1609 |
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1610 return (jbyteArray) JNIHandles::make_local(env, |
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1611 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1612 JVM_END |
1613 | |
1614 | |
1615 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1616 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1617 | |
1618 // method is a handle to a java.lang.reflect.Method object | |
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1619 Method* m = jvm_get_method_common(method); |
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1620 if (m == NULL) { |
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1621 return NULL; |
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1622 } |
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1623 |
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1624 return (jbyteArray) JNIHandles::make_local(env, |
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1625 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1626 JVM_END |
1627 | |
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1628 /* Type use annotations support (JDK 1.8) */ |
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1629 |
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1630 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1631 assert (cls != NULL, "illegal class"); |
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1632 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1633 ResourceMark rm(THREAD); |
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1634 // Return null for arrays and primitives |
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1635 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1636 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1637 if (k->oop_is_instance()) { |
8031 | 1638 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1639 if (type_annotations != NULL) { |
8031 | 1640 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1641 return (jbyteArray) JNIHandles::make_local(env, a); |
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1642 } |
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1643 } |
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1644 } |
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1645 return NULL; |
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1646 JVM_END |
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1647 |
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1648 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1649 assert (method != NULL, "illegal method"); |
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1650 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1651 |
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1652 // method is a handle to a java.lang.reflect.Method object |
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1653 Method* m = jvm_get_method_common(method); |
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1654 if (m == NULL) { |
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|
1655 return NULL; |
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|
1656 } |
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|
1657 |
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|
1658 AnnotationArray* type_annotations = m->type_annotations(); |
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1659 if (type_annotations != NULL) { |
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1660 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1661 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1662 } |
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|
1663 |
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|
1664 return NULL; |
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|
1665 JVM_END |
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|
1666 |
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|
1667 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1668 assert (field != NULL, "illegal field"); |
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|
1669 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1670 |
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|
1671 fieldDescriptor fd; |
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1672 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1673 if (!gotFd) { |
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|
1674 return NULL; |
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|
1675 } |
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|
1676 |
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1677 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1678 JVM_END |
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1679 |
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1680 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1681 if (!cp->is_within_bounds(index)) { |
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1682 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1683 } |
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1684 } |
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1685 |
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1686 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1687 { |
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1688 JVMWrapper("JVM_GetMethodParameters"); |
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1689 // method is a handle to a java.lang.reflect.Method object |
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1690 Method* method_ptr = jvm_get_method_common(method); |
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1691 methodHandle mh (THREAD, method_ptr); |
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1692 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1693 const int num_params = mh->method_parameters_length(); |
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1694 |
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1695 if (0 != num_params) { |
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1696 // make sure all the symbols are properly formatted |
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1697 for (int i = 0; i < num_params; i++) { |
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1698 MethodParametersElement* params = mh->method_parameters_start(); |
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1699 int index = params[i].name_cp_index; |
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1700 bounds_check(mh->constants(), index, CHECK_NULL); |
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1701 |
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1702 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1703 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1704 "Wrong type at constant pool index"); |
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1705 } |
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1706 |
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1707 } |
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1708 |
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1709 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1710 objArrayHandle result (THREAD, result_oop); |
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1711 |
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1712 for (int i = 0; i < num_params; i++) { |
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1713 MethodParametersElement* params = mh->method_parameters_start(); |
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1714 // For a 0 index, give a NULL symbol |
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1715 Symbol* const sym = 0 != params[i].name_cp_index ? |
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1716 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1717 int flags = params[i].flags; |
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1718 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1719 flags, CHECK_NULL); |
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1720 result->obj_at_put(i, param); |
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1721 } |
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1722 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1723 } else { |
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1724 return (jobjectArray)NULL; |
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1725 } |
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1726 } |
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1727 JVM_END |
0 | 1728 |
1729 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1730 | |
1731 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1732 { | |
1733 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1734 JvmtiVMObjectAllocEventCollector oam; | |
1735 | |
1736 // Exclude primitive types and array types | |
1737 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1738 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1739 // Return empty array |
1142 | 1740 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1741 return (jobjectArray) JNIHandles::make_local(env, res); |
1742 } | |
1743 | |
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1744 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1745 constantPoolHandle cp(THREAD, k->constants()); |
1746 | |
1747 // Ensure class is linked | |
1748 k->link_class(CHECK_NULL); | |
1749 | |
1750 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1751 bool skip_backtrace = false; | |
1752 | |
1753 // Allocate result | |
1754 int num_fields; | |
1755 | |
1756 if (publicOnly) { | |
1757 num_fields = 0; | |
3938 | 1758 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1759 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1760 } |
1761 } else { | |
3938 | 1762 num_fields = k->java_fields_count(); |
0 | 1763 |
1142 | 1764 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1765 num_fields--; |
1766 skip_backtrace = true; | |
1767 } | |
1768 } | |
1769 | |
1142 | 1770 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1771 objArrayHandle result (THREAD, r); |
1772 | |
1773 int out_idx = 0; | |
1774 fieldDescriptor fd; | |
3938 | 1775 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1776 if (skip_backtrace) { |
1777 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1778 int offset = fs.offset(); |
0 | 1779 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1780 } | |
1781 | |
3938 | 1782 if (!publicOnly || fs.access_flags().is_public()) { |
1783 fd.initialize(k(), fs.index()); | |
0 | 1784 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1785 result->obj_at_put(out_idx, field); | |
1786 ++out_idx; | |
1787 } | |
1788 } | |
1789 assert(out_idx == num_fields, "just checking"); | |
1790 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1791 } | |
1792 JVM_END | |
1793 | |
1794 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1795 { | |
1796 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1797 JvmtiVMObjectAllocEventCollector oam; | |
1798 | |
1799 // Exclude primitive types and array types | |
1800 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1801 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1802 // Return empty array |
1142 | 1803 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1804 return (jobjectArray) JNIHandles::make_local(env, res); |
1805 } | |
1806 | |
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1807 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1808 |
1809 // Ensure class is linked | |
1810 k->link_class(CHECK_NULL); | |
1811 | |
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1812 Array<Method*>* methods = k->methods(); |
0 | 1813 int methods_length = methods->length(); |
1814 int num_methods = 0; | |
1815 | |
1816 int i; | |
1817 for (i = 0; i < methods_length; i++) { | |
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1818 methodHandle method(THREAD, methods->at(i)); |
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1819 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1820 if (!publicOnly || method->is_public()) { |
1821 ++num_methods; | |
1822 } | |
1823 } | |
1824 } | |
1825 | |
1826 // Allocate result | |
1142 | 1827 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1828 objArrayHandle result (THREAD, r); |
1829 | |
1830 int out_idx = 0; | |
1831 for (i = 0; i < methods_length; i++) { | |
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1832 methodHandle method(THREAD, methods->at(i)); |
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1833 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1834 if (!publicOnly || method->is_public()) { |
1835 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1836 result->obj_at_put(out_idx, m); | |
1837 ++out_idx; | |
1838 } | |
1839 } | |
1840 } | |
1841 assert(out_idx == num_methods, "just checking"); | |
1842 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1843 } | |
1844 JVM_END | |
1845 | |
1846 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1847 { | |
1848 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1849 JvmtiVMObjectAllocEventCollector oam; | |
1850 | |
1851 // Exclude primitive types and array types | |
1852 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1853 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1854 // Return empty array |
1142 | 1855 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1856 return (jobjectArray) JNIHandles::make_local(env, res); |
1857 } | |
1858 | |
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1859 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1860 |
1861 // Ensure class is linked | |
1862 k->link_class(CHECK_NULL); | |
1863 | |
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1864 Array<Method*>* methods = k->methods(); |
0 | 1865 int methods_length = methods->length(); |
1866 int num_constructors = 0; | |
1867 | |
1868 int i; | |
1869 for (i = 0; i < methods_length; i++) { | |
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1870 methodHandle method(THREAD, methods->at(i)); |
0 | 1871 if (method->is_initializer() && !method->is_static()) { |
1872 if (!publicOnly || method->is_public()) { | |
1873 ++num_constructors; | |
1874 } | |
1875 } | |
1876 } | |
1877 | |
1878 // Allocate result | |
1142 | 1879 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1880 objArrayHandle result(THREAD, r); |
1881 | |
1882 int out_idx = 0; | |
1883 for (i = 0; i < methods_length; i++) { | |
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1884 methodHandle method(THREAD, methods->at(i)); |
0 | 1885 if (method->is_initializer() && !method->is_static()) { |
1886 if (!publicOnly || method->is_public()) { | |
1887 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1888 result->obj_at_put(out_idx, m); | |
1889 ++out_idx; | |
1890 } | |
1891 } | |
1892 } | |
1893 assert(out_idx == num_constructors, "just checking"); | |
1894 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1895 } | |
1896 JVM_END | |
1897 | |
1898 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1899 { | |
1900 JVMWrapper("JVM_GetClassAccessFlags"); | |
1901 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1902 // Primitive type | |
1903 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1904 } | |
1905 | |
6983 | 1906 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1907 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1908 } | |
1909 JVM_END | |
1910 | |
1911 | |
1912 // Constant pool access ////////////////////////////////////////////////////////// | |
1913 | |
1914 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1915 { | |
1916 JVMWrapper("JVM_GetClassConstantPool"); | |
1917 JvmtiVMObjectAllocEventCollector oam; | |
1918 | |
1919 // Return null for primitives and arrays | |
1920 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1921 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1922 if (k->oop_is_instance()) { |
0 | 1923 instanceKlassHandle k_h(THREAD, k); |
1924 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1925 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1926 return JNIHandles::make_local(jcp()); |
1927 } | |
1928 } | |
1929 return NULL; | |
1930 } | |
1931 JVM_END | |
1932 | |
1933 | |
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1934 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1935 { |
1936 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1937 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1938 return cp->length(); |
1939 } | |
1940 JVM_END | |
1941 | |
1942 | |
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1943 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1944 { |
1945 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1946 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1947 bounds_check(cp, index, CHECK_NULL); |
1948 constantTag tag = cp->tag_at(index); | |
1949 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1950 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1951 } | |
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1952 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1953 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1954 } |
1955 JVM_END | |
1956 | |
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1957 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1958 { |
1959 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1960 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1961 bounds_check(cp, index, CHECK_NULL); |
1962 constantTag tag = cp->tag_at(index); | |
1963 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1964 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1965 } | |
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1966 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 1967 if (k == NULL) return NULL; |
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1968 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1969 } |
1970 JVM_END | |
1971 | |
1972 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1973 constantTag tag = cp->tag_at(index); | |
1974 if (!tag.is_method() && !tag.is_interface_method()) { | |
1975 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1976 } | |
1977 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1978 Klass* k_o; |
0 | 1979 if (force_resolution) { |
1980 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1981 } else { | |
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1982 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 1983 if (k_o == NULL) return NULL; |
1984 } | |
1985 instanceKlassHandle k(THREAD, k_o); | |
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1986 Symbol* name = cp->uncached_name_ref_at(index); |
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1987 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1988 methodHandle m (THREAD, k->find_method(name, sig)); |
1989 if (m.is_null()) { | |
1990 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1991 } | |
1992 oop method; | |
1993 if (!m->is_initializer() || m->is_static()) { | |
1994 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1995 } else { | |
1996 method = Reflection::new_constructor(m, CHECK_NULL); | |
1997 } | |
1998 return JNIHandles::make_local(method); | |
1999 } | |
2000 | |
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2001 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2002 { |
2003 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2004 JvmtiVMObjectAllocEventCollector oam; | |
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2005 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2006 bounds_check(cp, index, CHECK_NULL); |
2007 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2008 return res; | |
2009 } | |
2010 JVM_END | |
2011 | |
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2012 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2013 { |
2014 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2015 JvmtiVMObjectAllocEventCollector oam; | |
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2016 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2017 bounds_check(cp, index, CHECK_NULL); |
2018 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2019 return res; | |
2020 } | |
2021 JVM_END | |
2022 | |
2023 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2024 constantTag tag = cp->tag_at(index); | |
2025 if (!tag.is_field()) { | |
2026 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2027 } | |
2028 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2029 Klass* k_o; |
0 | 2030 if (force_resolution) { |
2031 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2032 } else { | |
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2033 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2034 if (k_o == NULL) return NULL; |
2035 } | |
2036 instanceKlassHandle k(THREAD, k_o); | |
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2037 Symbol* name = cp->uncached_name_ref_at(index); |
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2038 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2039 fieldDescriptor fd; |
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2040 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2041 if (target_klass == NULL) { |
2042 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2043 } | |
2044 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2045 return JNIHandles::make_local(field); | |
2046 } | |
2047 | |
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2048 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2049 { |
2050 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2051 JvmtiVMObjectAllocEventCollector oam; | |
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2052 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2053 bounds_check(cp, index, CHECK_NULL); |
2054 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2055 return res; | |
2056 } | |
2057 JVM_END | |
2058 | |
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2059 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2060 { |
2061 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2062 JvmtiVMObjectAllocEventCollector oam; | |
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2063 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2064 bounds_check(cp, index, CHECK_NULL); |
2065 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2066 return res; | |
2067 } | |
2068 JVM_END | |
2069 | |
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2070 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2071 { |
2072 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2073 JvmtiVMObjectAllocEventCollector oam; | |
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2074 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2075 bounds_check(cp, index, CHECK_NULL); |
2076 constantTag tag = cp->tag_at(index); | |
2077 if (!tag.is_field_or_method()) { | |
2078 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2079 } | |
2080 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
2177
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2081 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2082 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2083 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2084 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2085 objArrayHandle dest(THREAD, dest_o); |
2086 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2087 dest->obj_at_put(0, str()); | |
2088 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2089 dest->obj_at_put(1, str()); | |
2090 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2091 dest->obj_at_put(2, str()); | |
2092 return (jobjectArray) JNIHandles::make_local(dest()); | |
2093 } | |
2094 JVM_END | |
2095 | |
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2096 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2097 { |
2098 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2099 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2100 bounds_check(cp, index, CHECK_0); |
2101 constantTag tag = cp->tag_at(index); | |
2102 if (!tag.is_int()) { | |
2103 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2104 } | |
2105 return cp->int_at(index); | |
2106 } | |
2107 JVM_END | |
2108 | |
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2109 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2110 { |
2111 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2112 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2113 bounds_check(cp, index, CHECK_(0L)); |
2114 constantTag tag = cp->tag_at(index); | |
2115 if (!tag.is_long()) { | |
2116 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2117 } | |
2118 return cp->long_at(index); | |
2119 } | |
2120 JVM_END | |
2121 | |
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2122 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2123 { |
2124 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2125 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2126 bounds_check(cp, index, CHECK_(0.0f)); |
2127 constantTag tag = cp->tag_at(index); | |
2128 if (!tag.is_float()) { | |
2129 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2130 } | |
2131 return cp->float_at(index); | |
2132 } | |
2133 JVM_END | |
2134 | |
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2135 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2136 { |
2137 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2138 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2139 bounds_check(cp, index, CHECK_(0.0)); |
2140 constantTag tag = cp->tag_at(index); | |
2141 if (!tag.is_double()) { | |
2142 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2143 } | |
2144 return cp->double_at(index); | |
2145 } | |
2146 JVM_END | |
2147 | |
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2148 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2149 { |
2150 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2151 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2152 bounds_check(cp, index, CHECK_NULL); |
2153 constantTag tag = cp->tag_at(index); | |
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2154 if (!tag.is_string()) { |
0 | 2155 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2156 } | |
2157 oop str = cp->string_at(index, CHECK_NULL); | |
2158 return (jstring) JNIHandles::make_local(str); | |
2159 } | |
2160 JVM_END | |
2161 | |
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2162 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2163 { |
2164 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2165 JvmtiVMObjectAllocEventCollector oam; | |
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2166 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2167 bounds_check(cp, index, CHECK_NULL); |
2168 constantTag tag = cp->tag_at(index); | |
2169 if (!tag.is_symbol()) { | |
2170 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2171 } | |
2177
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2172 Symbol* sym = cp->symbol_at(index); |
0 | 2173 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2174 return (jstring) JNIHandles::make_local(str()); | |
2175 } | |
2176 JVM_END | |
2177 | |
2178 | |
2179 // Assertion support. ////////////////////////////////////////////////////////// | |
2180 | |
2181 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2182 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2183 assert(cls != NULL, "bad class"); | |
2184 | |
2185 oop r = JNIHandles::resolve(cls); | |
2186 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2187 if (java_lang_Class::is_primitive(r)) return false; | |
2188 | |
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2189 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2190 assert(k->oop_is_instance(), "must be an instance klass"); |
2191 if (! k->oop_is_instance()) return false; | |
0 | 2192 |
2193 ResourceMark rm(THREAD); | |
6983 | 2194 const char* name = k->name()->as_C_string(); |
2195 bool system_class = k->class_loader() == NULL; | |
0 | 2196 return JavaAssertions::enabled(name, system_class); |
2197 | |
2198 JVM_END | |
2199 | |
2200 | |
2201 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2202 // command-line assertion arguments (i.e., -ea, -da). | |
2203 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2204 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2205 JvmtiVMObjectAllocEventCollector oam; | |
2206 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2207 return JNIHandles::make_local(env, asd); | |
2208 JVM_END | |
2209 | |
2210 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2211 | |
2212 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2213 | |
2214 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2215 // All functions from this section should call the jvmtiThreadSate function: | |
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2216 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2217 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2218 // was invoked in the middle of the class redefinition. |
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2219 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2220 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2221 | |
2222 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2223 JVMWrapper("JVM_GetClassNameUTF"); | |
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2224 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2225 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2226 return k->name()->as_utf8(); |
0 | 2227 JVM_END |
2228 | |
2229 | |
2230 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2231 JVMWrapper("JVM_GetClassCPTypes"); | |
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2232 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2233 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2234 // types will have length zero if this is not an InstanceKlass |
0 | 2235 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2236 if (k->oop_is_instance()) { |
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2237 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2238 for (int index = cp->length() - 1; index >= 0; index--) { |
2239 constantTag tag = cp->tag_at(index); | |
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2240 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2241 } |
2242 } | |
2243 JVM_END | |
2244 | |
2245 | |
2246 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2247 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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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); |
6983 | 2250 if (!k->oop_is_instance()) |
0 | 2251 return 0; |
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2252 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2253 JVM_END |
2254 | |
2255 | |
2256 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2257 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2258 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2259 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2260 if (!k->oop_is_instance()) |
0 | 2261 return 0; |
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2262 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2263 JVM_END |
2264 | |
2265 | |
2266 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2267 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2268 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2269 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2270 if (!k->oop_is_instance()) |
0 | 2271 return 0; |
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2272 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2273 JVM_END |
2274 | |
2275 | |
2276 // The following methods, used for the verifier, are never called with | |
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2277 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2278 // Typically, these methods are called in a loop with bounds determined |
2279 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2280 // zero for arrays. | |
2281 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2282 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2283 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2284 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2285 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2286 int length = method->checked_exceptions_length(); |
0 | 2287 if (length > 0) { |
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2288 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2289 for (int i = 0; i < length; i++) { |
2290 exceptions[i] = table[i].class_cp_index; | |
2291 } | |
2292 } | |
2293 JVM_END | |
2294 | |
2295 | |
2296 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2297 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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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 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2301 return method->checked_exceptions_length(); |
0 | 2302 JVM_END |
2303 | |
2304 | |
2305 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2306 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2307 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2308 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2309 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2310 memcpy(code, method->code_base(), method->code_size()); |
0 | 2311 JVM_END |
2312 | |
2313 | |
2314 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2315 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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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 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2319 return method->code_size(); |
0 | 2320 JVM_END |
2321 | |
2322 | |
2323 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2324 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2325 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2326 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2327 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2328 ExceptionTable extable(method); |
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2329 entry->start_pc = extable.start_pc(entry_index); |
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2330 entry->end_pc = extable.end_pc(entry_index); |
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|
2331 entry->handler_pc = extable.handler_pc(entry_index); |
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|
2332 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2333 JVM_END |
2334 | |
2335 | |
2336 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2337 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2338 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2339 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2340 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2341 return method->exception_table_length(); |
0 | 2342 JVM_END |
2343 | |
2344 | |
2345 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2346 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2347 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2348 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2349 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2350 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2351 JVM_END |
2352 | |
2353 | |
2354 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2355 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2356 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2357 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2358 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2359 JVM_END |
2360 | |
2361 | |
2362 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2363 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2364 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2365 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2366 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2367 return method->max_locals(); |
0 | 2368 JVM_END |
2369 | |
2370 | |
2371 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2372 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2373 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2374 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2375 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2376 return method->size_of_parameters(); |
0 | 2377 JVM_END |
2378 | |
2379 | |
2380 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2381 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2382 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2383 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2384 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2385 return method->verifier_max_stack(); |
0 | 2386 JVM_END |
2387 | |
2388 | |
2389 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2390 JVMWrapper("JVM_IsConstructorIx"); | |
2391 ResourceMark rm(THREAD); | |
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2392 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2393 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2394 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2395 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2396 JVM_END |
2397 | |
2398 | |
7958
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changeset
|
2399 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2400 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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changeset
|
2401 ResourceMark rm(THREAD); |
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changeset
|
2402 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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changeset
|
2403 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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changeset
|
2404 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2405 return method->is_overpass(); |
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|
2406 JVM_END |
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|
2407 |
0 | 2408 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2409 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2410 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2411 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2412 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2413 return method->name()->as_utf8(); |
0 | 2414 JVM_END |
2415 | |
2416 | |
2417 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2418 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2419 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2420 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2421 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2422 return method->signature()->as_utf8(); |
0 | 2423 JVM_END |
2424 | |
2425 /** | |
2426 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2427 * read entries in the constant pool. Since the old verifier always | |
2428 * works on a copy of the code, it will not see any rewriting that | |
2429 * may possibly occur in the middle of verification. So it is important | |
2430 * that nothing it calls tries to use the cpCache instead of the raw | |
2431 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2432 */ | |
2433 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2434 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2435 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2436 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2437 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2438 switch (cp->tag_at(cp_index).value()) { |
2439 case JVM_CONSTANT_Fieldref: | |
2440 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2441 default: | |
2442 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2443 } | |
2444 ShouldNotReachHere(); | |
2445 return NULL; | |
2446 JVM_END | |
2447 | |
2448 | |
2449 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2450 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2451 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2452 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2453 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2454 switch (cp->tag_at(cp_index).value()) { |
2455 case JVM_CONSTANT_InterfaceMethodref: | |
2456 case JVM_CONSTANT_Methodref: | |
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|
2457 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2458 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2459 default: | |
2460 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2461 } | |
2462 ShouldNotReachHere(); | |
2463 return NULL; | |
2464 JVM_END | |
2465 | |
2466 | |
2467 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2468 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2469 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2470 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2471 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2472 switch (cp->tag_at(cp_index).value()) { |
2473 case JVM_CONSTANT_InterfaceMethodref: | |
2474 case JVM_CONSTANT_Methodref: | |
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|
2475 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2476 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2477 default: | |
2478 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2479 } | |
2480 ShouldNotReachHere(); | |
2481 return NULL; | |
2482 JVM_END | |
2483 | |
2484 | |
2485 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2486 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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|
2487 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2488 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2489 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2490 switch (cp->tag_at(cp_index).value()) { |
2491 case JVM_CONSTANT_Fieldref: | |
2492 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2493 default: | |
2494 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2495 } | |
2496 ShouldNotReachHere(); | |
2497 return NULL; | |
2498 JVM_END | |
2499 | |
2500 | |
2501 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2502 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2503 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2504 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2505 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2506 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2507 return classname->as_utf8(); |
2508 JVM_END | |
2509 | |
2510 | |
2511 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2512 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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|
2513 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2514 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2515 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2516 switch (cp->tag_at(cp_index).value()) { |
2517 case JVM_CONSTANT_Fieldref: { | |
2518 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2519 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2520 return classname->as_utf8(); |
2521 } | |
2522 default: | |
2523 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2524 } | |
2525 ShouldNotReachHere(); | |
2526 return NULL; | |
2527 JVM_END | |
2528 | |
2529 | |
2530 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2531 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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changeset
|
2532 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2533 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2534 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2535 switch (cp->tag_at(cp_index).value()) { |
2536 case JVM_CONSTANT_Methodref: | |
2537 case JVM_CONSTANT_InterfaceMethodref: { | |
2538 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2539 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2540 return classname->as_utf8(); |
2541 } | |
2542 default: | |
2543 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2544 } | |
2545 ShouldNotReachHere(); | |
2546 return NULL; | |
2547 JVM_END | |
2548 | |
2549 | |
3938 | 2550 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2551 JVMWrapper("JVM_GetCPFieldModifiers"); |
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|
2552 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2553 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2554 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2555 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2556 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2557 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2558 switch (cp->tag_at(cp_index).value()) { |
2559 case JVM_CONSTANT_Fieldref: { | |
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|
2560 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2561 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2562 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2563 if (fs.name() == name && fs.signature() == signature) { | |
2564 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2565 } |
2566 } | |
2567 return -1; | |
2568 } | |
2569 default: | |
2570 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2571 } | |
2572 ShouldNotReachHere(); | |
2573 return 0; | |
2574 JVM_END | |
2575 | |
2576 | |
2577 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2578 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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diff
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|
2579 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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6271
diff
changeset
|
2580 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2581 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2582 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
2583 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2584 switch (cp->tag_at(cp_index).value()) { |
2585 case JVM_CONSTANT_Methodref: | |
2586 case JVM_CONSTANT_InterfaceMethodref: { | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2587 Symbol* name = cp->uncached_name_ref_at(cp_index); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
2588 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
6725
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6271
diff
changeset
|
2589 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2590 int methods_count = methods->length(); |
2591 for (int i = 0; i < methods_count; i++) { | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2592 Method* method = methods->at(i); |
0 | 2593 if (method->name() == name && method->signature() == signature) { |
2594 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2595 } | |
2596 } | |
2597 return -1; | |
2598 } | |
2599 default: | |
2600 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2601 } | |
2602 ShouldNotReachHere(); | |
2603 return 0; | |
2604 JVM_END | |
2605 | |
2606 | |
2607 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2608 | |
2609 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2610 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2611 JVM_END | |
2612 | |
2613 | |
2614 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2615 JVMWrapper("JVM_IsSameClassPackage"); | |
2616 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2617 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2618 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
da91efe96a93
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diff
changeset
|
2619 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2620 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2621 JVM_END | |
2622 | |
2623 | |
2624 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2625 | |
2626 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2627 JVMWrapper2("JVM_Open (%s)", fname); | |
2628 | |
2629 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2630 int result = os::open(fname, flags, mode); |
0 | 2631 if (result >= 0) { |
2632 return result; | |
2633 } else { | |
2634 switch(errno) { | |
2635 case EEXIST: | |
2636 return JVM_EEXIST; | |
2637 default: | |
2638 return -1; | |
2639 } | |
2640 } | |
2641 JVM_END | |
2642 | |
2643 | |
2644 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2645 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2646 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2647 return os::close(fd); |
0 | 2648 JVM_END |
2649 | |
2650 | |
2651 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2652 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2653 | |
2654 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2655 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2656 JVM_END |
2657 | |
2658 | |
2659 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2660 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2661 | |
2662 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2663 return (jint)os::write(fd, buf, nbytes); |
0 | 2664 JVM_END |
2665 | |
2666 | |
2667 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2668 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2669 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
2670 return os::available(fd, pbytes); |
0 | 2671 JVM_END |
2672 | |
2673 | |
2674 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2675 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2676 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2677 return os::lseek(fd, offset, whence); |
0 | 2678 JVM_END |
2679 | |
2680 | |
2681 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2682 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2683 return os::ftruncate(fd, length); |
0 | 2684 JVM_END |
2685 | |
2686 | |
2687 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2688 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2689 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2690 return os::fsync(fd); |
0 | 2691 JVM_END |
2692 | |
2693 | |
2694 // Printing support ////////////////////////////////////////////////// | |
2695 extern "C" { | |
2696 | |
2697 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2698 // see bug 4399518, 4417214 | |
2699 if ((intptr_t)count <= 0) return -1; | |
2700 return vsnprintf(str, count, fmt, args); | |
2701 } | |
2702 | |
2703 | |
2704 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2705 va_list args; | |
2706 int len; | |
2707 va_start(args, fmt); | |
2708 len = jio_vsnprintf(str, count, fmt, args); | |
2709 va_end(args); | |
2710 return len; | |
2711 } | |
2712 | |
2713 | |
2714 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2715 int len; | |
2716 va_list args; | |
2717 va_start(args, fmt); | |
2718 len = jio_vfprintf(f, fmt, args); | |
2719 va_end(args); | |
2720 return len; | |
2721 } | |
2722 | |
2723 | |
2724 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2725 if (Arguments::vfprintf_hook() != NULL) { | |
2726 return Arguments::vfprintf_hook()(f, fmt, args); | |
2727 } else { | |
2728 return vfprintf(f, fmt, args); | |
2729 } | |
2730 } | |
2731 | |
2732 | |
2191 | 2733 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2734 int len; |
2735 va_list args; | |
2736 va_start(args, fmt); | |
2737 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2738 va_end(args); | |
2739 return len; | |
2740 } | |
2741 | |
2742 | |
2743 // HotSpot specific jio method | |
2744 void jio_print(const char* s) { | |
2745 // Try to make this function as atomic as possible. | |
2746 if (Arguments::vfprintf_hook() != NULL) { | |
2747 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2748 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2749 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2750 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2751 } |
2752 } | |
2753 | |
2754 } // Extern C | |
2755 | |
2756 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2757 | |
2758 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2759 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2760 // OSThread objects. The exception to this rule is when the target object is the thread | |
2761 // doing the operation, in which case we know that the thread won't exit until the | |
2762 // operation is done (all exits being voluntary). There are a few cases where it is | |
2763 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2764 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2765 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2766 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2767 // implementation is local to this file, we always lock Threads_lock for that one. | |
2768 | |
2769 static void thread_entry(JavaThread* thread, TRAPS) { | |
2770 HandleMark hm(THREAD); | |
2771 Handle obj(THREAD, thread->threadObj()); | |
2772 JavaValue result(T_VOID); | |
2773 JavaCalls::call_virtual(&result, | |
2774 obj, | |
1142 | 2775 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
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|
2776 vmSymbols::run_method_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2777 vmSymbols::void_method_signature(), |
0 | 2778 THREAD); |
2779 } | |
2780 | |
2781 | |
2782 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2783 JVMWrapper("JVM_StartThread"); | |
2784 JavaThread *native_thread = NULL; | |
2785 | |
2786 // We cannot hold the Threads_lock when we throw an exception, | |
2787 // due to rank ordering issues. Example: we might need to grab the | |
2788 // Heap_lock while we construct the exception. | |
2789 bool throw_illegal_thread_state = false; | |
2790 | |
2791 // We must release the Threads_lock before we can post a jvmti event | |
2792 // in Thread::start. | |
2793 { | |
2794 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2795 // we operate. | |
2796 MutexLocker mu(Threads_lock); | |
2797 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2798 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2799 // re-starting an already started thread, so we should usually find |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2800 // that the JavaThread is null. However for a JNI attached thread |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2801 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2802 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2803 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2804 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2805 throw_illegal_thread_state = true; |
0 | 2806 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2807 // We could also check the stillborn flag to see if this thread was already stopped, but |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2808 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2809 |
0 | 2810 jlong size = |
2811 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2812 // Allocate the C++ Thread structure and create the native thread. The | |
2813 // stack size retrieved from java is signed, but the constructor takes | |
2814 // size_t (an unsigned type), so avoid passing negative values which would | |
2815 // result in really large stacks. | |
2816 size_t sz = size > 0 ? (size_t) size : 0; | |
2817 native_thread = new JavaThread(&thread_entry, sz); | |
2818 | |
2819 // At this point it may be possible that no osthread was created for the | |
2820 // JavaThread due to lack of memory. Check for this situation and throw | |
2821 // an exception if necessary. Eventually we may want to change this so | |
2822 // that we only grab the lock if the thread was created successfully - | |
2823 // then we can also do this check and throw the exception in the | |
2824 // JavaThread constructor. | |
2825 if (native_thread->osthread() != NULL) { | |
2826 // Note: the current thread is not being used within "prepare". | |
2827 native_thread->prepare(jthread); | |
2828 } | |
2829 } | |
2830 } | |
2831 | |
2832 if (throw_illegal_thread_state) { | |
2833 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2834 } | |
2835 | |
2836 assert(native_thread != NULL, "Starting null thread?"); | |
2837 | |
2838 if (native_thread->osthread() == NULL) { | |
2839 // No one should hold a reference to the 'native_thread'. | |
2840 delete native_thread; | |
2841 if (JvmtiExport::should_post_resource_exhausted()) { | |
2842 JvmtiExport::post_resource_exhausted( | |
2843 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2844 "unable to create new native thread"); | |
2845 } | |
2846 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2847 "unable to create new native thread"); | |
2848 } | |
2849 | |
2850 Thread::start(native_thread); | |
2851 | |
2852 JVM_END | |
2853 | |
2854 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2855 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2856 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2857 // same thread as the sender, no safepoint is needed. |
0 | 2858 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2859 JVMWrapper("JVM_StopThread"); | |
2860 | |
2861 oop java_throwable = JNIHandles::resolve(throwable); | |
2862 if (java_throwable == NULL) { | |
2863 THROW(vmSymbols::java_lang_NullPointerException()); | |
2864 } | |
2865 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2866 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2867 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2868 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2869 receiver, (address)java_thread, throwable); |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2870 // First check if thread is alive |
0 | 2871 if (receiver != NULL) { |
2872 // Check if exception is getting thrown at self (use oop equality, since the | |
2873 // target object might exit) | |
2874 if (java_thread == thread->threadObj()) { | |
2875 THROW_OOP(java_throwable); | |
2876 } else { | |
2877 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2878 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2879 } | |
2880 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2881 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2882 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2883 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2884 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2885 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2886 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2887 // stillborn flag for the first case, and if the thread has already |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2888 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2889 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2890 } |
0 | 2891 JVM_END |
2892 | |
2893 | |
2894 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2895 JVMWrapper("JVM_IsThreadAlive"); | |
2896 | |
2897 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2898 return java_lang_Thread::is_alive(thread_oop); | |
2899 JVM_END | |
2900 | |
2901 | |
2902 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2903 JVMWrapper("JVM_SuspendThread"); | |
2904 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2905 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2906 | |
2907 if (receiver != NULL) { | |
2908 // thread has run and has not exited (still on threads list) | |
2909 | |
2910 { | |
2911 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2912 if (receiver->is_external_suspend()) { | |
2913 // Don't allow nested external suspend requests. We can't return | |
2914 // an error from this interface so just ignore the problem. | |
2915 return; | |
2916 } | |
2917 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2918 return; | |
2919 } | |
2920 receiver->set_external_suspend(); | |
2921 } | |
2922 | |
2923 // java_suspend() will catch threads in the process of exiting | |
2924 // and will ignore them. | |
2925 receiver->java_suspend(); | |
2926 | |
2927 // It would be nice to have the following assertion in all the | |
2928 // time, but it is possible for a racing resume request to have | |
2929 // resumed this thread right after we suspended it. Temporarily | |
2930 // enable this assertion if you are chasing a different kind of | |
2931 // bug. | |
2932 // | |
2933 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2934 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2935 } | |
2936 JVM_END | |
2937 | |
2938 | |
2939 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2940 JVMWrapper("JVM_ResumeThread"); | |
2941 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2942 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2943 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2944 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2945 // looks at it. | |
2946 MutexLocker ml(Threads_lock); | |
2947 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2948 if (thr != NULL) { | |
2949 // the thread has run and is not in the process of exiting | |
2950 thr->java_resume(); | |
2951 } | |
2952 JVM_END | |
2953 | |
2954 | |
2955 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2956 JVMWrapper("JVM_SetThreadPriority"); | |
2957 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2958 MutexLocker ml(Threads_lock); | |
2959 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2960 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2961 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2962 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2963 Thread::set_priority(thr, (ThreadPriority)prio); | |
2964 } | |
2965 JVM_END | |
2966 | |
2967 | |
2968 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2969 JVMWrapper("JVM_Yield"); | |
2970 if (os::dont_yield()) return; | |
4006 | 2971 #ifndef USDT2 |
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2972 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 2973 #else /* USDT2 */ |
2974 HOTSPOT_THREAD_YIELD(); | |
2975 #endif /* USDT2 */ | |
0 | 2976 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
2977 // Critical for similar threading behaviour | |
2978 if (ConvertYieldToSleep) { | |
2979 os::sleep(thread, MinSleepInterval, false); | |
2980 } else { | |
2981 os::yield(); | |
2982 } | |
2983 JVM_END | |
2984 | |
2985 | |
2986 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2987 JVMWrapper("JVM_Sleep"); | |
2988 | |
2989 if (millis < 0) { | |
2990 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2991 } | |
2992 | |
2993 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2994 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2995 } | |
2996 | |
2997 // Save current thread state and restore it at the end of this block. | |
2998 // And set new thread state to SLEEPING. | |
2999 JavaThreadSleepState jtss(thread); | |
3000 | |
4006 | 3001 #ifndef USDT2 |
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3002 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3003 #else /* USDT2 */ |
3004 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3005 millis); | |
3006 #endif /* USDT2 */ | |
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3007 |
0 | 3008 if (millis == 0) { |
3009 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3010 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3011 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3012 // for SOLARIS | |
3013 if (ConvertSleepToYield) { | |
3014 os::yield(); | |
3015 } else { | |
3016 ThreadState old_state = thread->osthread()->get_state(); | |
3017 thread->osthread()->set_state(SLEEPING); | |
3018 os::sleep(thread, MinSleepInterval, false); | |
3019 thread->osthread()->set_state(old_state); | |
3020 } | |
3021 } else { | |
3022 ThreadState old_state = thread->osthread()->get_state(); | |
3023 thread->osthread()->set_state(SLEEPING); | |
3024 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3025 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3026 // us while we were sleeping. We do not overwrite those. | |
3027 if (!HAS_PENDING_EXCEPTION) { | |
4006 | 3028 #ifndef USDT2 |
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3029 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3030 #else /* USDT2 */ |
3031 HOTSPOT_THREAD_SLEEP_END( | |
3032 1); | |
3033 #endif /* USDT2 */ | |
0 | 3034 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3035 // to properly restore the thread state. That's likely wrong. | |
3036 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3037 } | |
3038 } | |
3039 thread->osthread()->set_state(old_state); | |
3040 } | |
4006 | 3041 #ifndef USDT2 |
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3042 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3043 #else /* USDT2 */ |
3044 HOTSPOT_THREAD_SLEEP_END( | |
3045 0); | |
3046 #endif /* USDT2 */ | |
0 | 3047 JVM_END |
3048 | |
3049 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3050 JVMWrapper("JVM_CurrentThread"); | |
3051 oop jthread = thread->threadObj(); | |
3052 assert (thread != NULL, "no current thread!"); | |
3053 return JNIHandles::make_local(env, jthread); | |
3054 JVM_END | |
3055 | |
3056 | |
3057 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3058 JVMWrapper("JVM_CountStackFrames"); | |
3059 | |
3060 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3061 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3062 bool throw_illegal_thread_state = false; | |
3063 int count = 0; | |
3064 | |
3065 { | |
3066 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3067 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3068 // acquire of the lock | |
3069 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3070 | |
3071 if (thr == NULL) { | |
3072 // do nothing | |
3073 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3074 // Check whether this java thread has been suspended already. If not, throws | |
3075 // IllegalThreadStateException. We defer to throw that exception until | |
3076 // Threads_lock is released since loading exception class has to leave VM. | |
3077 // The correct way to test a thread is actually suspended is | |
3078 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3079 // the Threads_lock. The above tests are sufficient for our purposes | |
3080 // provided the walkability of the stack is stable - which it isn't | |
3081 // 100% but close enough for most practical purposes. | |
3082 throw_illegal_thread_state = true; | |
3083 } else { | |
3084 // Count all java activation, i.e., number of vframes | |
3085 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3086 // Native frames are not counted | |
3087 if (!vfst.method()->is_native()) count++; | |
3088 } | |
3089 } | |
3090 } | |
3091 | |
3092 if (throw_illegal_thread_state) { | |
3093 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3094 "this thread is not suspended"); | |
3095 } | |
3096 return count; | |
3097 JVM_END | |
3098 | |
3099 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3100 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3101 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3102 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3103 // outside the critical section. Threads_lock is hot so we want to minimize | |
3104 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3105 // two steps. The 1st phase, performed under Threads_lock, would return | |
3106 // a closure that'd be invoked after Threads_lock was dropped. | |
3107 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3108 // admit spurious wakeups. | |
3109 | |
3110 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3111 JVMWrapper("JVM_Interrupt"); | |
3112 | |
3113 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3114 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3115 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3116 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3117 // acquire of the lock | |
3118 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3119 if (thr != NULL) { | |
3120 Thread::interrupt(thr); | |
3121 } | |
3122 JVM_END | |
3123 | |
3124 | |
3125 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3126 JVMWrapper("JVM_IsInterrupted"); | |
3127 | |
3128 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3129 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3130 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3131 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3132 // acquire of the lock | |
3133 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3134 if (thr == NULL) { | |
3135 return JNI_FALSE; | |
3136 } else { | |
3137 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3138 } | |
3139 JVM_END | |
3140 | |
3141 | |
3142 // Return true iff the current thread has locked the object passed in | |
3143 | |
3144 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3145 JVMWrapper("JVM_HoldsLock"); | |
3146 assert(THREAD->is_Java_thread(), "sanity check"); | |
3147 if (obj == NULL) { | |
3148 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3149 } | |
3150 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3151 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3152 JVM_END | |
3153 | |
3154 | |
3155 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3156 JVMWrapper("JVM_DumpAllStacks"); | |
3157 VM_PrintThreads op; | |
3158 VMThread::execute(&op); | |
3159 if (JvmtiExport::should_post_data_dump()) { | |
3160 JvmtiExport::post_data_dump(); | |
3161 } | |
3162 JVM_END | |
3163 | |
4006 | 3164 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3165 JVMWrapper("JVM_SetNativeThreadName"); | |
3166 ResourceMark rm(THREAD); | |
3167 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3168 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3169 // Thread naming only supported for the current thread, doesn't work for | |
3170 // target threads. | |
3171 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3172 // we don't set the name of an attached thread to avoid stepping | |
3173 // on other programs | |
3174 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3175 os::set_native_thread_name(thread_name); | |
3176 } | |
3177 JVM_END | |
0 | 3178 |
3179 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3180 | |
3181 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3182 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3183 if (jthread->privileged_stack_top() == NULL) return false; | |
3184 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3185 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3186 if (loader == NULL) return true; | |
3187 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3188 if (trusted) return true; | |
3189 } | |
3190 return false; | |
3191 } | |
3192 | |
3193 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3194 JVMWrapper("JVM_CurrentLoadedClass"); | |
3195 ResourceMark rm(THREAD); | |
3196 | |
3197 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3198 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3199 bool trusted = is_trusted_frame(thread, &vfst); | |
3200 if (trusted) return NULL; | |
3201 | |
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3202 Method* m = vfst.method(); |
0 | 3203 if (!m->is_native()) { |
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3204 InstanceKlass* holder = m->method_holder(); |
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3205 oop loader = holder->class_loader(); |
0 | 3206 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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|
3207 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3208 } |
3209 } | |
3210 } | |
3211 return NULL; | |
3212 JVM_END | |
3213 | |
3214 | |
3215 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3216 JVMWrapper("JVM_CurrentClassLoader"); | |
3217 ResourceMark rm(THREAD); | |
3218 | |
3219 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3220 | |
3221 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3222 bool trusted = is_trusted_frame(thread, &vfst); | |
3223 if (trusted) return NULL; | |
3224 | |
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3225 Method* m = vfst.method(); |
0 | 3226 if (!m->is_native()) { |
6940
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3227 InstanceKlass* holder = m->method_holder(); |
0 | 3228 assert(holder->is_klass(), "just checking"); |
6940
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|
3229 oop loader = holder->class_loader(); |
0 | 3230 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3231 return JNIHandles::make_local(env, loader); | |
3232 } | |
3233 } | |
3234 } | |
3235 return NULL; | |
3236 JVM_END | |
3237 | |
3238 | |
3239 // Utility object for collecting method holders walking down the stack | |
3240 class KlassLink: public ResourceObj { | |
3241 public: | |
3242 KlassHandle klass; | |
3243 KlassLink* next; | |
3244 | |
3245 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3246 }; | |
3247 | |
3248 | |
3249 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3250 JVMWrapper("JVM_GetClassContext"); | |
3251 ResourceMark rm(THREAD); | |
3252 JvmtiVMObjectAllocEventCollector oam; | |
3253 // Collect linked list of (handles to) method holders | |
3254 KlassLink* first = NULL; | |
3255 KlassLink* last = NULL; | |
3256 int depth = 0; | |
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3257 vframeStream vfst(thread); |
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|
3258 |
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3259 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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|
3260 // This must only be called from SecurityManager.getClassContext |
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3261 Method* m = vfst.method(); |
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|
3262 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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|
3263 m->name() == vmSymbols::getClassContext_name() && |
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|
3264 m->signature() == vmSymbols::void_class_array_signature())) { |
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|
3265 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3266 } |
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|
3267 } |
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|
3268 |
16885e702c88
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|
3269 // Collect method holders |
16885e702c88
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changeset
|
3270 for (; !vfst.at_end(); vfst.security_next()) { |
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|
3271 Method* m = vfst.method(); |
0 | 3272 // Native frames are not returned |
8866
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|
3273 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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|
3274 Klass* holder = m->method_holder(); |
0 | 3275 assert(holder->is_klass(), "just checking"); |
3276 depth++; | |
3277 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3278 if (first == NULL) { | |
3279 first = last = l; | |
3280 } else { | |
3281 last->next = l; | |
3282 last = l; | |
3283 } | |
3284 } | |
3285 } | |
3286 | |
3287 // Create result array of type [Ljava/lang/Class; | |
1142 | 3288 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3289 // Fill in mirrors corresponding to method holders |
3290 int index = 0; | |
3291 while (first != NULL) { | |
6983 | 3292 result->obj_at_put(index++, first->klass()->java_mirror()); |
0 | 3293 first = first->next; |
3294 } | |
3295 assert(index == depth, "just checking"); | |
3296 | |
3297 return (jobjectArray) JNIHandles::make_local(env, result); | |
3298 JVM_END | |
3299 | |
3300 | |
3301 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3302 JVMWrapper("JVM_ClassDepth"); | |
3303 ResourceMark rm(THREAD); | |
3304 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3305 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3306 | |
3307 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3308 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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|
3309 if (class_name_sym == NULL) { |
0 | 3310 return -1; |
3311 } | |
3312 | |
3313 int depth = 0; | |
3314 | |
3315 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3316 if (!vfst.method()->is_native()) { | |
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|
3317 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3318 assert(holder->is_klass(), "just checking"); |
6940
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|
3319 if (holder->name() == class_name_sym) { |
0 | 3320 return depth; |
3321 } | |
3322 depth++; | |
3323 } | |
3324 } | |
3325 return -1; | |
3326 JVM_END | |
3327 | |
3328 | |
3329 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3330 JVMWrapper("JVM_ClassLoaderDepth"); | |
3331 ResourceMark rm(THREAD); | |
3332 int depth = 0; | |
3333 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3334 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3335 bool trusted = is_trusted_frame(thread, &vfst); | |
3336 if (trusted) return -1; | |
3337 | |
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3338 Method* m = vfst.method(); |
0 | 3339 if (!m->is_native()) { |
6940
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3340 InstanceKlass* holder = m->method_holder(); |
0 | 3341 assert(holder->is_klass(), "just checking"); |
6940
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3342 oop loader = holder->class_loader(); |
0 | 3343 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3344 return depth; | |
3345 } | |
3346 depth++; | |
3347 } | |
3348 } | |
3349 return -1; | |
3350 JVM_END | |
3351 | |
3352 | |
3353 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3354 | |
3355 | |
3356 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3357 JVMWrapper("JVM_GetSystemPackage"); | |
3358 ResourceMark rm(THREAD); | |
3359 JvmtiVMObjectAllocEventCollector oam; | |
3360 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3361 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3362 return (jstring) JNIHandles::make_local(result); | |
3363 JVM_END | |
3364 | |
3365 | |
3366 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3367 JVMWrapper("JVM_GetSystemPackages"); | |
3368 JvmtiVMObjectAllocEventCollector oam; | |
3369 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3370 return (jobjectArray) JNIHandles::make_local(result); | |
3371 JVM_END | |
3372 | |
3373 | |
3374 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3375 | |
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3376 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3377 if (current_class == NULL) { |
3378 return true; | |
3379 } | |
3380 if ((current_class == field_class) || access.is_public()) { | |
3381 return true; | |
3382 } | |
3383 | |
3384 if (access.is_protected()) { | |
3385 // See if current_class is a subclass of field_class | |
6983 | 3386 if (current_class->is_subclass_of(field_class)) { |
0 | 3387 return true; |
3388 } | |
3389 } | |
3390 | |
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3391 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3392 } |
3393 | |
3394 | |
3395 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3396 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3397 JVMWrapper("JVM_AllocateNewObject"); | |
3398 JvmtiVMObjectAllocEventCollector oam; | |
3399 // Receiver is not used | |
3400 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3401 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3402 | |
3403 // Cannot instantiate primitive types | |
3404 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3405 ResourceMark rm(THREAD); | |
3406 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3407 } | |
3408 | |
3409 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3410 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3411 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3412 ResourceMark rm(THREAD); |
3413 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3414 } | |
3415 | |
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3416 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3417 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3418 |
3419 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3420 | |
3421 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3422 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3423 | |
3424 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3425 curr_klass->initialize(CHECK_NULL); | |
3426 | |
3427 methodHandle m (THREAD, | |
3428 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3429 vmSymbols::void_method_signature())); | |
3430 if (m.is_null()) { | |
3431 ResourceMark rm(THREAD); | |
3432 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3433 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3434 vmSymbols::object_initializer_name(), |
3435 vmSymbols::void_method_signature())); | |
3436 } | |
3437 | |
3438 if (curr_klass == init_klass && !m->is_public()) { | |
3439 // Calling the constructor for class 'curr_klass'. | |
3440 // Only allow calls to a public no-arg constructor. | |
3441 // This path corresponds to creating an Externalizable object. | |
3442 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3443 } | |
3444 | |
3445 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3446 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3447 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3448 } | |
3449 | |
3450 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3451 // Call constructor m. This might call a constructor higher up in the hierachy | |
3452 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3453 | |
3454 return JNIHandles::make_local(obj()); | |
3455 JVM_END | |
3456 | |
3457 | |
3458 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3459 JVMWrapper("JVM_AllocateNewArray"); | |
3460 JvmtiVMObjectAllocEventCollector oam; | |
3461 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3462 | |
3463 if (java_lang_Class::is_primitive(mirror)) { | |
3464 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3465 } | |
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3466 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3467 oop result; |
3468 | |
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3469 if (k->oop_is_typeArray()) { |
0 | 3470 // typeArray |
6831
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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diff
changeset
|
3471 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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3472 } else if (k->oop_is_objArray()) { |
0 | 3473 // objArray |
6831
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3474 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3475 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3476 result = oak->allocate(length, CHECK_NULL); | |
3477 } else { | |
3478 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3479 } | |
3480 return JNIHandles::make_local(env, result); | |
3481 JVM_END | |
3482 | |
3483 | |
3484 // Return the first non-null class loader up the execution stack, or null | |
3485 // if only code from the null class loader is on the stack. | |
3486 | |
3487 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3488 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3489 // UseNewReflection | |
3490 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
6940
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diff
changeset
|
3491 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3492 if (loader != NULL) { |
3493 return JNIHandles::make_local(env, loader); | |
3494 } | |
3495 } | |
3496 return NULL; | |
3497 JVM_END | |
3498 | |
3499 | |
3500 // Load a class relative to the most recent class on the stack with a non-null | |
3501 // classloader. | |
3502 // This function has been deprecated and should not be considered part of the | |
3503 // specified JVM interface. | |
3504 | |
3505 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3506 jclass currClass, jstring currClassName)) | |
3507 JVMWrapper("JVM_LoadClass0"); | |
3508 // Receiver is not used | |
3509 ResourceMark rm(THREAD); | |
3510 | |
3511 // Class name argument is not guaranteed to be in internal format | |
3512 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3513 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3514 | |
3515 const char* str = java_lang_String::as_utf8_string(string()); | |
3516 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3517 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3518 // It's impossible to create this class; the name cannot fit |
3519 // into the constant pool. | |
3520 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3521 } | |
3522 | |
2177
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changeset
|
3523 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3524 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3525 // Find the most recent class on the stack with a non-null classloader | |
3526 oop loader = NULL; | |
3527 oop protection_domain = NULL; | |
3528 if (curr_klass.is_null()) { | |
3529 for (vframeStream vfst(thread); | |
3530 !vfst.at_end() && loader == NULL; | |
3531 vfst.next()) { | |
3532 if (!vfst.method()->is_native()) { | |
6940
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coleenp
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6831
diff
changeset
|
3533 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
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coleenp
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6831
diff
changeset
|
3534 loader = holder->class_loader(); |
18fb7da42534
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coleenp
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6831
diff
changeset
|
3535 protection_domain = holder->protection_domain(); |
0 | 3536 } |
3537 } | |
3538 } else { | |
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3539 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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3540 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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3541 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3542 } |
3543 Handle h_loader(THREAD, loader); | |
3544 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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diff
changeset
|
3545 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
|
3546 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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579
diff
changeset
|
3547 if (TraceClassResolution && result != NULL) { |
6725
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3548 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
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diff
changeset
|
3549 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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|
3550 return result; |
0 | 3551 JVM_END |
3552 | |
3553 | |
3554 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3555 | |
3556 | |
3557 // resolve array handle and check arguments | |
3558 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3559 if (arr == NULL) { | |
3560 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3561 } | |
3562 oop a = JNIHandles::resolve_non_null(arr); | |
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3563 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3564 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3565 } | |
3566 return arrayOop(a); | |
3567 } | |
3568 | |
3569 | |
3570 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3571 JVMWrapper("JVM_GetArrayLength"); | |
3572 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3573 return a->length(); | |
3574 JVM_END | |
3575 | |
3576 | |
3577 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3578 JVMWrapper("JVM_Array_Get"); | |
3579 JvmtiVMObjectAllocEventCollector oam; | |
3580 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3581 jvalue value; | |
3582 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3583 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3584 return JNIHandles::make_local(env, box); | |
3585 JVM_END | |
3586 | |
3587 | |
3588 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3589 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3590 jvalue value; | |
3591 value.i = 0; // to initialize value before getting used in CHECK | |
3592 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3593 assert(a->is_typeArray(), "just checking"); | |
3594 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3595 BasicType wide_type = (BasicType) wCode; | |
3596 if (type != wide_type) { | |
3597 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3598 } | |
3599 return value; | |
3600 JVM_END | |
3601 | |
3602 | |
3603 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3604 JVMWrapper("JVM_SetArrayElement"); | |
3605 arrayOop a = check_array(env, arr, false, CHECK); | |
3606 oop box = JNIHandles::resolve(val); | |
3607 jvalue value; | |
3608 value.i = 0; // to initialize value before getting used in CHECK | |
3609 BasicType value_type; | |
3610 if (a->is_objArray()) { | |
3611 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3612 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3613 } else { | |
3614 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3615 } | |
3616 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3617 JVM_END | |
3618 | |
3619 | |
3620 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3621 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3622 arrayOop a = check_array(env, arr, true, CHECK); | |
3623 assert(a->is_typeArray(), "just checking"); | |
3624 BasicType value_type = (BasicType) vCode; | |
3625 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3626 JVM_END | |
3627 | |
3628 | |
3629 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3630 JVMWrapper("JVM_NewArray"); | |
3631 JvmtiVMObjectAllocEventCollector oam; | |
3632 oop element_mirror = JNIHandles::resolve(eltClass); | |
3633 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3634 return JNIHandles::make_local(env, result); | |
3635 JVM_END | |
3636 | |
3637 | |
3638 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3639 JVMWrapper("JVM_NewMultiArray"); | |
3640 JvmtiVMObjectAllocEventCollector oam; | |
3641 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3642 oop element_mirror = JNIHandles::resolve(eltClass); | |
3643 assert(dim_array->is_typeArray(), "just checking"); | |
3644 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3645 return JNIHandles::make_local(env, result); | |
3646 JVM_END | |
3647 | |
3648 | |
3649 // Networking library support //////////////////////////////////////////////////////////////////// | |
3650 | |
3651 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3652 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3653 return 0; |
0 | 3654 JVM_END |
3655 | |
3656 | |
3657 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3658 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3659 return os::socket(domain, type, protocol); |
0 | 3660 JVM_END |
3661 | |
3662 | |
3663 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3664 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3665 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3666 return os::socket_close(fd); |
0 | 3667 JVM_END |
3668 | |
3669 | |
3670 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3671 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3672 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3673 return os::socket_shutdown(fd, howto); |
0 | 3674 JVM_END |
3675 | |
3676 | |
3677 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3678 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3679 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3680 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3681 JVM_END |
3682 | |
3683 | |
3684 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3685 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3686 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3687 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3688 JVM_END |
3689 | |
3690 | |
3691 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3692 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3693 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3694 return os::timeout(fd, timeout); |
0 | 3695 JVM_END |
3696 | |
3697 | |
3698 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3699 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3700 //%note jvm_r6 | |
1980
828eafbd85cc
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ikrylov
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diff
changeset
|
3701 return os::listen(fd, count); |
0 | 3702 JVM_END |
3703 | |
3704 | |
3705 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3706 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3707 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3708 return os::connect(fd, him, (socklen_t)len); |
0 | 3709 JVM_END |
3710 | |
3711 | |
3712 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3713 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3714 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3715 return os::bind(fd, him, (socklen_t)len); |
0 | 3716 JVM_END |
3717 | |
3718 | |
3719 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3720 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3721 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3722 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3723 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3724 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3725 return result; |
0 | 3726 JVM_END |
3727 | |
3728 | |
3729 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3730 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3731 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3732 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3733 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
|
3734 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3735 return result; |
0 | 3736 JVM_END |
3737 | |
3738 | |
3739 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3740 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3741 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3742 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3743 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
|
3744 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3745 return result; |
0 | 3746 JVM_END |
3747 | |
3748 | |
3749 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3750 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3751 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3752 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3753 JVM_END |
3754 | |
3755 | |
3756 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3757 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3758 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3759 return os::socket_available(fd, pbytes); |
0 | 3760 JVM_END |
3761 | |
3762 | |
3763 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3764 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3765 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3766 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3767 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
|
3768 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3769 return result; |
0 | 3770 JVM_END |
3771 | |
3772 | |
3773 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3774 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3775 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3776 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3777 JVM_END |
3778 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3779 |
0 | 3780 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3781 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3782 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3783 JVM_END |
0 | 3784 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3785 |
0 | 3786 // Library support /////////////////////////////////////////////////////////////////////////// |
3787 | |
3788 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3789 //%note jvm_ct | |
3790 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3791 char ebuf[1024]; | |
3792 void *load_result; | |
3793 { | |
3794 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3795 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3796 } |
3797 if (load_result == NULL) { | |
3798 char msg[1024]; | |
3799 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3800 // Since 'ebuf' may contain a string encoded using | |
3801 // platform encoding scheme, we need to pass | |
3802 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3803 // as the last argument. See bug 6367357. | |
3804 Handle h_exception = | |
3805 Exceptions::new_exception(thread, | |
3806 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3807 msg, Exceptions::unsafe_to_utf8); | |
3808 | |
3809 THROW_HANDLE_0(h_exception); | |
3810 } | |
3811 return load_result; | |
3812 JVM_END | |
3813 | |
3814 | |
3815 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3816 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 os::dll_unload(handle); |
0 | 3818 JVM_END |
3819 | |
3820 | |
3821 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3822 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3823 return os::dll_lookup(handle, name); |
0 | 3824 JVM_END |
3825 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3826 |
0 | 3827 // Floating point support //////////////////////////////////////////////////////////////////// |
3828 | |
3829 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3830 JVMWrapper("JVM_IsNaN"); | |
3831 return g_isnan(a); | |
3832 JVM_END | |
3833 | |
3834 | |
3835 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3836 | |
3837 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3838 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3839 return Threads::is_supported_jni_version_including_1_1(version); | |
3840 JVM_END | |
3841 | |
3842 | |
3843 // String support /////////////////////////////////////////////////////////////////////////// | |
3844 | |
3845 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3846 JVMWrapper("JVM_InternString"); | |
3847 JvmtiVMObjectAllocEventCollector oam; | |
3848 if (str == NULL) return NULL; | |
3849 oop string = JNIHandles::resolve_non_null(str); | |
3850 oop result = StringTable::intern(string, CHECK_NULL); | |
3851 return (jstring) JNIHandles::make_local(env, result); | |
3852 JVM_END | |
3853 | |
3854 | |
3855 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3856 | |
3857 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3858 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3859 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3860 // that only works with java threads. | |
3861 | |
3862 | |
3863 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3864 VM_Exit::block_if_vm_exited(); | |
3865 JVMWrapper("JVM_RawMonitorCreate"); | |
3866 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3867 } | |
3868 | |
3869 | |
3870 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3871 VM_Exit::block_if_vm_exited(); | |
3872 JVMWrapper("JVM_RawMonitorDestroy"); | |
3873 delete ((Mutex*) mon); | |
3874 } | |
3875 | |
3876 | |
3877 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3878 VM_Exit::block_if_vm_exited(); | |
3879 JVMWrapper("JVM_RawMonitorEnter"); | |
3880 ((Mutex*) mon)->jvm_raw_lock(); | |
3881 return 0; | |
3882 } | |
3883 | |
3884 | |
3885 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3886 VM_Exit::block_if_vm_exited(); | |
3887 JVMWrapper("JVM_RawMonitorExit"); | |
3888 ((Mutex*) mon)->jvm_raw_unlock(); | |
3889 } | |
3890 | |
3891 | |
3892 // Support for Serialization | |
3893 | |
3894 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3895 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3896 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3897 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3898 | |
3899 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3900 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3901 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3902 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3903 | |
3904 | |
3905 void initialize_converter_functions() { | |
3906 if (JDK_Version::is_gte_jdk14x_version()) { | |
3907 // These functions only exist for compatibility with 1.3.1 and earlier | |
3908 return; | |
3909 } | |
3910 | |
3911 // called from universe_post_init() | |
3912 assert( | |
3913 int_bits_to_float_fn == NULL && | |
3914 long_bits_to_double_fn == NULL && | |
3915 float_to_int_bits_fn == NULL && | |
3916 double_to_long_bits_fn == NULL , | |
3917 "initialization done twice" | |
3918 ); | |
3919 // initialize | |
3920 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3921 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3922 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3923 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3924 // verify | |
3925 assert( | |
3926 int_bits_to_float_fn != NULL && | |
3927 long_bits_to_double_fn != NULL && | |
3928 float_to_int_bits_fn != NULL && | |
3929 double_to_long_bits_fn != NULL , | |
3930 "initialization failed" | |
3931 ); | |
3932 } | |
3933 | |
3934 | |
3935 // Serialization | |
3936 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3937 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3938 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3939 | |
3940 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3941 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3942 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3943 oop o = JNIHandles::resolve(obj); | |
3944 | |
3945 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3946 THROW(vmSymbols::java_lang_NullPointerException()); | |
3947 } | |
3948 | |
3949 jsize nfids = fids->length(); | |
3950 if (nfids == 0) return; | |
3951 | |
3952 if (tcodes->length() < nfids) { | |
3953 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3954 } | |
3955 | |
3956 jsize off = 0; | |
3957 /* loop through fields, setting values */ | |
3958 for (jsize i = 0; i < nfids; i++) { | |
3959 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3960 int field_offset; | |
3961 if (fid != NULL) { | |
3962 // NULL is a legal value for fid, but retrieving the field offset | |
3963 // trigger assertion in that case | |
3964 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3965 } | |
3966 | |
3967 switch (tcodes->char_at(i)) { | |
3968 case 'Z': | |
3969 if (fid != NULL) { | |
3970 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3971 o->bool_field_put(field_offset, val); | |
3972 } | |
3973 off++; | |
3974 break; | |
3975 | |
3976 case 'B': | |
3977 if (fid != NULL) { | |
3978 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3979 } | |
3980 off++; | |
3981 break; | |
3982 | |
3983 case 'C': | |
3984 if (fid != NULL) { | |
3985 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3986 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3987 o->char_field_put(field_offset, val); | |
3988 } | |
3989 off += 2; | |
3990 break; | |
3991 | |
3992 case 'S': | |
3993 if (fid != NULL) { | |
3994 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3995 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3996 o->short_field_put(field_offset, val); | |
3997 } | |
3998 off += 2; | |
3999 break; | |
4000 | |
4001 case 'I': | |
4002 if (fid != NULL) { | |
4003 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4004 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4005 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4006 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4007 o->int_field_put(field_offset, ival); | |
4008 } | |
4009 off += 4; | |
4010 break; | |
4011 | |
4012 case 'F': | |
4013 if (fid != NULL) { | |
4014 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4015 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4016 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4017 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4018 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
4019 o->float_field_put(field_offset, fval); | |
4020 } | |
4021 off += 4; | |
4022 break; | |
4023 | |
4024 case 'J': | |
4025 if (fid != NULL) { | |
4026 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4027 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4028 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4029 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4030 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4031 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4032 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4033 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4034 o->long_field_put(field_offset, lval); | |
4035 } | |
4036 off += 8; | |
4037 break; | |
4038 | |
4039 case 'D': | |
4040 if (fid != NULL) { | |
4041 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4042 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4043 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4044 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4045 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4046 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4047 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4048 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4049 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
4050 o->double_field_put(field_offset, dval); | |
4051 } | |
4052 off += 8; | |
4053 break; | |
4054 | |
4055 default: | |
4056 // Illegal typecode | |
4057 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4058 } | |
4059 } | |
4060 JVM_END | |
4061 | |
4062 | |
4063 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
4064 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
4065 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
4066 | |
4067 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
4068 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
4069 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
4070 oop o = JNIHandles::resolve(obj); | |
4071 | |
4072 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
4073 THROW(vmSymbols::java_lang_NullPointerException()); | |
4074 } | |
4075 | |
4076 jsize nfids = fids->length(); | |
4077 if (nfids == 0) return; | |
4078 | |
4079 if (tcodes->length() < nfids) { | |
4080 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
4081 } | |
4082 | |
4083 /* loop through fields, fetching values */ | |
4084 jsize off = 0; | |
4085 for (jsize i = 0; i < nfids; i++) { | |
4086 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
4087 if (fid == NULL) { | |
4088 THROW(vmSymbols::java_lang_NullPointerException()); | |
4089 } | |
4090 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4091 | |
4092 switch (tcodes->char_at(i)) { | |
4093 case 'Z': | |
4094 { | |
4095 jboolean val = o->bool_field(field_offset); | |
4096 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
4097 } | |
4098 break; | |
4099 | |
4100 case 'B': | |
4101 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
4102 break; | |
4103 | |
4104 case 'C': | |
4105 { | |
4106 jchar val = o->char_field(field_offset); | |
4107 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4108 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4109 } | |
4110 break; | |
4111 | |
4112 case 'S': | |
4113 { | |
4114 jshort val = o->short_field(field_offset); | |
4115 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4116 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4117 } | |
4118 break; | |
4119 | |
4120 case 'I': | |
4121 { | |
4122 jint val = o->int_field(field_offset); | |
4123 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4124 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4125 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4126 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4127 } | |
4128 break; | |
4129 | |
4130 case 'F': | |
4131 { | |
4132 jfloat fval = o->float_field(field_offset); | |
4133 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
4134 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
4135 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
4136 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
4137 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
4138 } | |
4139 break; | |
4140 | |
4141 case 'J': | |
4142 { | |
4143 jlong val = o->long_field(field_offset); | |
4144 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
4145 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
4146 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
4147 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
4148 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4149 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4150 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4151 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4152 } | |
4153 break; | |
4154 | |
4155 case 'D': | |
4156 { | |
4157 jdouble dval = o->double_field(field_offset); | |
4158 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
4159 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
4160 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
4161 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
4162 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
4163 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
4164 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
4165 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
4166 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4167 } | |
4168 break; | |
4169 | |
4170 default: | |
4171 // Illegal typecode | |
4172 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4173 } | |
4174 } | |
4175 JVM_END | |
4176 | |
4177 | |
4178 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4179 | |
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4180 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4181 // Security Note: |
4182 // The Java level wrapper will perform the necessary security check allowing | |
4183 // us to pass the NULL as the initiating class loader. | |
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4184 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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4185 |
0 | 4186 KlassHandle klass_handle(THREAD, klass); |
4187 // Check if we should initialize the class | |
4188 if (init && klass_handle->oop_is_instance()) { | |
4189 klass_handle->initialize(CHECK_NULL); | |
4190 } | |
4191 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4192 } | |
4193 | |
4194 | |
4195 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4196 | |
4197 #ifndef PRODUCT | |
4198 | |
4199 extern "C" { | |
4200 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4201 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4202 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4203 } | |
4204 | |
4205 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4206 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4207 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
4208 JVM_END | |
4209 | |
4210 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4211 JVMWrapper("JVM_AccessVMIntFlag"); | |
4212 intx v; | |
4213 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4214 *value = (jint)v; | |
4215 return result; | |
4216 JVM_END | |
4217 | |
4218 | |
4219 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4220 JVMWrapper("JVM_VMBreakPoint"); | |
4221 oop the_obj = JNIHandles::resolve(obj); | |
4222 BREAKPOINT; | |
4223 JVM_END | |
4224 | |
4225 | |
4226 #endif | |
4227 | |
4228 | |
4229 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4230 | |
4231 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4232 JVMWrapper("JVM_InvokeMethod"); | |
4233 Handle method_handle; | |
4234 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4235 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4236 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4237 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4238 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4239 jobject res = JNIHandles::make_local(env, result); | |
4240 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4241 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4242 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4243 if (java_lang_Class::is_primitive(ret_type)) { | |
4244 // Only for primitive type vm allocates memory for java object. | |
4245 // See box() method. | |
4246 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4247 } | |
4248 } | |
4249 return res; | |
4250 } else { | |
4251 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4252 } | |
4253 JVM_END | |
4254 | |
4255 | |
4256 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4257 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4258 oop constructor_mirror = JNIHandles::resolve(c); | |
4259 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4260 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4261 jobject res = JNIHandles::make_local(env, result); | |
4262 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4263 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4264 } | |
4265 return res; | |
4266 JVM_END | |
4267 | |
4268 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4269 | |
4270 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4271 JVMWrapper("JVM_SupportsCX8"); | |
4272 return VM_Version::supports_cx8(); | |
4273 JVM_END | |
4274 | |
4275 | |
4276 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4277 JVMWrapper("JVM_CX8Field"); | |
4278 jlong res; | |
4279 oop o = JNIHandles::resolve(obj); | |
4280 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4281 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4282 | |
4283 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4284 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4285 | |
4286 return res == oldVal; | |
4287 JVM_END | |
4288 | |
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4289 // DTrace /////////////////////////////////////////////////////////////////// |
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4290 |
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4291 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4292 JVMWrapper("JVM_DTraceGetVersion"); |
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4293 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4294 JVM_END |
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diff
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|
4295 |
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4296 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4297 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4298 JVM_DTraceProvider* providers)) |
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4299 JVMWrapper("JVM_DTraceActivate"); |
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4300 return DTraceJSDT::activate( |
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4301 version, module_name, providers_count, providers, CHECK_0); |
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|
4302 JVM_END |
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|
4303 |
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4304 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4305 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4306 return DTraceJSDT::is_probe_enabled(method); |
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4307 JVM_END |
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|
4308 |
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4309 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4310 JVMWrapper("JVM_DTraceDispose"); |
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4311 DTraceJSDT::dispose(handle); |
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4312 JVM_END |
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4313 |
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4314 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4315 JVMWrapper("JVM_DTraceIsSupported"); |
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4316 return DTraceJSDT::is_supported(); |
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4317 JVM_END |
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4318 |
0 | 4319 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4320 // jvmti agent threads, and JNI attaching threads are skipped) | |
4321 // See CR 6404306 regarding JNI attaching threads | |
4322 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4323 ResourceMark rm(THREAD); | |
4324 ThreadsListEnumerator tle(THREAD, false, false); | |
4325 JvmtiVMObjectAllocEventCollector oam; | |
4326 | |
4327 int num_threads = tle.num_threads(); | |
1142 | 4328 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4329 objArrayHandle threads_ah(THREAD, r); |
4330 | |
4331 for (int i = 0; i < num_threads; i++) { | |
4332 Handle h = tle.get_threadObj(i); | |
4333 threads_ah->obj_at_put(i, h()); | |
4334 } | |
4335 | |
4336 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4337 JVM_END | |
4338 | |
4339 | |
4340 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4341 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4342 // the corresponding entry in the given threads array | |
4343 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4344 JVMWrapper("JVM_DumpThreads"); | |
4345 JvmtiVMObjectAllocEventCollector oam; | |
4346 | |
4347 // Check if threads is null | |
4348 if (threads == NULL) { | |
4349 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4350 } | |
4351 | |
4352 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4353 objArrayHandle ah(THREAD, a); | |
4354 int num_threads = ah->length(); | |
4355 // check if threads is non-empty array | |
4356 if (num_threads == 0) { | |
4357 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4358 } | |
4359 | |
4360 // check if threads is not an array of objects of Thread class | |
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4361 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4362 if (k != SystemDictionary::Thread_klass()) { |
0 | 4363 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4364 } | |
4365 | |
4366 ResourceMark rm(THREAD); | |
4367 | |
4368 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4369 for (int i = 0; i < num_threads; i++) { | |
4370 oop thread_obj = ah->obj_at(i); | |
4371 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4372 thread_handle_array->append(h); | |
4373 } | |
4374 | |
4375 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4376 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4377 | |
4378 JVM_END | |
4379 | |
4380 // JVM monitoring and management support | |
4381 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4382 return Management::get_jmm_interface(version); | |
4383 JVM_END | |
4384 | |
4385 // com.sun.tools.attach.VirtualMachine agent properties support | |
4386 // | |
4387 // Initialize the agent properties with the properties maintained in the VM | |
4388 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4389 JVMWrapper("JVM_InitAgentProperties"); | |
4390 ResourceMark rm; | |
4391 | |
4392 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4393 | |
4394 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4395 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4396 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4397 return properties; | |
4398 JVM_END | |
4399 | |
4400 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4401 { | |
4402 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4403 JvmtiVMObjectAllocEventCollector oam; | |
4404 | |
4405 if (ofClass == NULL) { | |
4406 return NULL; | |
4407 } | |
4408 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4409 // Special handling for primitive objects | |
4410 if (java_lang_Class::is_primitive(mirror())) { | |
4411 return NULL; | |
4412 } | |
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4413 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4414 if (!k->oop_is_instance()) { |
0 | 4415 return NULL; |
4416 } | |
4417 instanceKlassHandle ik_h(THREAD, k); | |
4418 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4419 if (encl_method_class_idx == 0) { | |
4420 return NULL; | |
4421 } | |
1142 | 4422 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4423 objArrayHandle dest(THREAD, dest_o); |
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4424 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4425 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4426 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4427 if (encl_method_method_idx != 0) { | |
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4428 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4429 extract_low_short_from_int( |
4430 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4431 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4432 dest->obj_at_put(1, str()); | |
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4433 sym = ik_h->constants()->symbol_at( |
0 | 4434 extract_high_short_from_int( |
4435 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4436 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4437 dest->obj_at_put(2, str()); | |
4438 } | |
4439 return (jobjectArray) JNIHandles::make_local(dest()); | |
4440 } | |
4441 JVM_END | |
4442 | |
4443 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4444 jint javaThreadState)) | |
4445 { | |
4446 // If new thread states are added in future JDK and VM versions, | |
4447 // this should check if the JDK version is compatible with thread | |
4448 // states supported by the VM. Return NULL if not compatible. | |
4449 // | |
4450 // This function must map the VM java_lang_Thread::ThreadStatus | |
4451 // to the Java thread state that the JDK supports. | |
4452 // | |
4453 | |
4454 typeArrayHandle values_h; | |
4455 switch (javaThreadState) { | |
4456 case JAVA_THREAD_STATE_NEW : { | |
4457 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4458 values_h = typeArrayHandle(THREAD, r); | |
4459 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4460 break; | |
4461 } | |
4462 case JAVA_THREAD_STATE_RUNNABLE : { | |
4463 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4464 values_h = typeArrayHandle(THREAD, r); | |
4465 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4466 break; | |
4467 } | |
4468 case JAVA_THREAD_STATE_BLOCKED : { | |
4469 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4470 values_h = typeArrayHandle(THREAD, r); | |
4471 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4472 break; | |
4473 } | |
4474 case JAVA_THREAD_STATE_WAITING : { | |
4475 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4476 values_h = typeArrayHandle(THREAD, r); | |
4477 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4478 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4479 break; | |
4480 } | |
4481 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4482 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4483 values_h = typeArrayHandle(THREAD, r); | |
4484 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4485 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4486 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4487 break; | |
4488 } | |
4489 case JAVA_THREAD_STATE_TERMINATED : { | |
4490 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4491 values_h = typeArrayHandle(THREAD, r); | |
4492 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4493 break; | |
4494 } | |
4495 default: | |
4496 // Unknown state - probably incompatible JDK version | |
4497 return NULL; | |
4498 } | |
4499 | |
4500 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4501 } | |
4502 JVM_END | |
4503 | |
4504 | |
4505 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4506 jint javaThreadState, | |
4507 jintArray values)) | |
4508 { | |
4509 // If new thread states are added in future JDK and VM versions, | |
4510 // this should check if the JDK version is compatible with thread | |
4511 // states supported by the VM. Return NULL if not compatible. | |
4512 // | |
4513 // This function must map the VM java_lang_Thread::ThreadStatus | |
4514 // to the Java thread state that the JDK supports. | |
4515 // | |
4516 | |
4517 ResourceMark rm; | |
4518 | |
4519 // Check if threads is null | |
4520 if (values == NULL) { | |
4521 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4522 } | |
4523 | |
4524 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4525 typeArrayHandle values_h(THREAD, v); | |
4526 | |
4527 objArrayHandle names_h; | |
4528 switch (javaThreadState) { | |
4529 case JAVA_THREAD_STATE_NEW : { | |
4530 assert(values_h->length() == 1 && | |
4531 values_h->int_at(0) == java_lang_Thread::NEW, | |
4532 "Invalid threadStatus value"); | |
4533 | |
1142 | 4534 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4535 1, /* only 1 substate */ |
4536 CHECK_NULL); | |
4537 names_h = objArrayHandle(THREAD, r); | |
4538 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4539 names_h->obj_at_put(0, name()); | |
4540 break; | |
4541 } | |
4542 case JAVA_THREAD_STATE_RUNNABLE : { | |
4543 assert(values_h->length() == 1 && | |
4544 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4545 "Invalid threadStatus value"); | |
4546 | |
1142 | 4547 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4548 1, /* only 1 substate */ |
4549 CHECK_NULL); | |
4550 names_h = objArrayHandle(THREAD, r); | |
4551 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4552 names_h->obj_at_put(0, name()); | |
4553 break; | |
4554 } | |
4555 case JAVA_THREAD_STATE_BLOCKED : { | |
4556 assert(values_h->length() == 1 && | |
4557 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4558 "Invalid threadStatus value"); | |
4559 | |
1142 | 4560 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4561 1, /* only 1 substate */ |
4562 CHECK_NULL); | |
4563 names_h = objArrayHandle(THREAD, r); | |
4564 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4565 names_h->obj_at_put(0, name()); | |
4566 break; | |
4567 } | |
4568 case JAVA_THREAD_STATE_WAITING : { | |
4569 assert(values_h->length() == 2 && | |
4570 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4571 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4572 "Invalid threadStatus value"); | |
1142 | 4573 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4574 2, /* number of substates */ |
4575 CHECK_NULL); | |
4576 names_h = objArrayHandle(THREAD, r); | |
4577 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4578 CHECK_NULL); | |
4579 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4580 CHECK_NULL); | |
4581 names_h->obj_at_put(0, name0()); | |
4582 names_h->obj_at_put(1, name1()); | |
4583 break; | |
4584 } | |
4585 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4586 assert(values_h->length() == 3 && | |
4587 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4588 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4589 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4590 "Invalid threadStatus value"); | |
1142 | 4591 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4592 3, /* number of substates */ |
4593 CHECK_NULL); | |
4594 names_h = objArrayHandle(THREAD, r); | |
4595 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4596 CHECK_NULL); | |
4597 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4598 CHECK_NULL); | |
4599 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4600 CHECK_NULL); | |
4601 names_h->obj_at_put(0, name0()); | |
4602 names_h->obj_at_put(1, name1()); | |
4603 names_h->obj_at_put(2, name2()); | |
4604 break; | |
4605 } | |
4606 case JAVA_THREAD_STATE_TERMINATED : { | |
4607 assert(values_h->length() == 1 && | |
4608 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4609 "Invalid threadStatus value"); | |
1142 | 4610 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4611 1, /* only 1 substate */ |
4612 CHECK_NULL); | |
4613 names_h = objArrayHandle(THREAD, r); | |
4614 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4615 names_h->obj_at_put(0, name()); | |
4616 break; | |
4617 } | |
4618 default: | |
4619 // Unknown state - probably incompatible JDK version | |
4620 return NULL; | |
4621 } | |
4622 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4623 } | |
4624 JVM_END | |
4625 | |
4626 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4627 { | |
4628 memset(info, 0, sizeof(info_size)); | |
4629 | |
4630 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4631 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4632 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4633 | |
4634 // when we add a new capability in the jvm_version_info struct, we should also | |
4635 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4636 // counter defined in runtimeService.cpp. | |
4637 info->is_attachable = AttachListener::is_attach_supported(); | |
4638 } | |
4639 JVM_END |