Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 10136:cc12becb22e7
Merge
author | dcubed |
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date | Sun, 21 Apr 2013 21:05:02 -0700 |
parents | cd9ad42dfde0 |
children | b9a918201d47 92ef81e2f571 b295e132102d |
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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"; | |
376 #else | |
377 const char* compiler_name = ""; | |
378 #endif // compilers | |
379 #endif // TIERED | |
380 | |
381 if (*compiler_name != '\0' && | |
382 (Arguments::mode() != Arguments::_int)) { | |
383 PUTPROP(props, "sun.management.compiler", compiler_name); | |
384 } | |
385 } | |
386 | |
387 return properties; | |
388 JVM_END | |
389 | |
390 | |
391 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
392 | |
393 extern volatile jint vm_created; | |
394 | |
395 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
396 if (vm_created != 0 && (code == 0)) { | |
397 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
398 Universe::run_finalizers_on_exit(); | |
399 } | |
400 before_exit(thread); | |
401 vm_exit(code); | |
402 JVM_END | |
403 | |
404 | |
405 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
406 before_exit(thread); | |
407 vm_exit(code); | |
408 JVM_END | |
409 | |
410 | |
411 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
412 register_on_exit_function(func); | |
413 JVM_END | |
414 | |
415 | |
416 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
417 JVMWrapper("JVM_GC"); | |
418 if (!DisableExplicitGC) { | |
419 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
420 } | |
421 JVM_END | |
422 | |
423 | |
424 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
425 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
426 return Universe::heap()->millis_since_last_gc(); | |
427 JVM_END | |
428 | |
429 | |
430 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
431 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
432 JVM_END | |
433 | |
434 | |
435 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
436 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
437 JVM_END | |
438 | |
439 static inline jlong convert_size_t_to_jlong(size_t val) { | |
440 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
441 NOT_LP64 (return (jlong)val;) | |
442 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
443 } | |
444 | |
445 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
446 JVMWrapper("JVM_TotalMemory"); | |
447 size_t n = Universe::heap()->capacity(); | |
448 return convert_size_t_to_jlong(n); | |
449 JVM_END | |
450 | |
451 | |
452 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
453 JVMWrapper("JVM_FreeMemory"); | |
454 CollectedHeap* ch = Universe::heap(); | |
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455 size_t n; |
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456 { |
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457 MutexLocker x(Heap_lock); |
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458 n = ch->capacity() - ch->used(); |
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459 } |
0 | 460 return convert_size_t_to_jlong(n); |
461 JVM_END | |
462 | |
463 | |
464 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
465 JVMWrapper("JVM_MaxMemory"); | |
466 size_t n = Universe::heap()->max_capacity(); | |
467 return convert_size_t_to_jlong(n); | |
468 JVM_END | |
469 | |
470 | |
471 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
472 JVMWrapper("JVM_ActiveProcessorCount"); | |
473 return os::active_processor_count(); | |
474 JVM_END | |
475 | |
476 | |
477 | |
478 // java.lang.Throwable ////////////////////////////////////////////////////// | |
479 | |
480 | |
481 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
482 JVMWrapper("JVM_FillInStackTrace"); | |
483 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
484 java_lang_Throwable::fill_in_stack_trace(exception); | |
485 JVM_END | |
486 | |
487 | |
488 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
489 JVMWrapper("JVM_GetStackTraceDepth"); | |
490 oop exception = JNIHandles::resolve(throwable); | |
491 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
492 JVM_END | |
493 | |
494 | |
495 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
496 JVMWrapper("JVM_GetStackTraceElement"); | |
497 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
498 oop exception = JNIHandles::resolve(throwable); | |
499 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
500 return JNIHandles::make_local(env, element); | |
501 JVM_END | |
502 | |
503 | |
504 // java.lang.Object /////////////////////////////////////////////// | |
505 | |
506 | |
507 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
508 JVMWrapper("JVM_IHashCode"); | |
509 // as implemented in the classic virtual machine; return 0 if object is NULL | |
510 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
511 JVM_END | |
512 | |
513 | |
514 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
515 JVMWrapper("JVM_MonitorWait"); | |
516 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
517 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
518 if (JvmtiExport::should_post_monitor_wait()) { | |
519 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
520 } | |
521 ObjectSynchronizer::wait(obj, ms, CHECK); | |
522 JVM_END | |
523 | |
524 | |
525 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
526 JVMWrapper("JVM_MonitorNotify"); | |
527 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
528 ObjectSynchronizer::notify(obj, CHECK); | |
529 JVM_END | |
530 | |
531 | |
532 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
533 JVMWrapper("JVM_MonitorNotifyAll"); | |
534 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
535 ObjectSynchronizer::notifyall(obj, CHECK); | |
536 JVM_END | |
537 | |
538 | |
539 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
540 JVMWrapper("JVM_Clone"); | |
541 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
542 const KlassHandle klass (THREAD, obj->klass()); | |
543 JvmtiVMObjectAllocEventCollector oam; | |
544 | |
545 #ifdef ASSERT | |
546 // Just checking that the cloneable flag is set correct | |
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547 if (obj->is_array()) { |
0 | 548 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
549 } else { | |
550 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 551 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 552 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
553 } | |
554 #endif | |
555 | |
556 // Check if class of obj supports the Cloneable interface. | |
557 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
558 if (!klass->is_cloneable()) { | |
559 ResourceMark rm(THREAD); | |
560 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
561 } | |
562 | |
563 // Make shallow object copy | |
564 const int size = obj->size(); | |
565 oop new_obj = NULL; | |
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566 if (obj->is_array()) { |
0 | 567 const int length = ((arrayOop)obj())->length(); |
568 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
569 } else { | |
570 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
571 } | |
572 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
573 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
574 // be suspended in the middle of copying the pointer and end up with parts | |
575 // of two different pointers in the field. Subsequent dereferences will crash. | |
576 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
577 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
578 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
579 // The same is true of StubRoutines::object_copy and the various oop_copy | |
580 // variants, and of the code generated by the inline_native_clone intrinsic. | |
581 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
582 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
583 (size_t)align_object_size(size) / HeapWordsPerLong); | |
584 // Clear the header | |
585 new_obj->init_mark(); | |
586 | |
587 // Store check (mark entire object and let gc sort it out) | |
588 BarrierSet* bs = Universe::heap()->barrier_set(); | |
589 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
590 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
591 | |
592 // Caution: this involves a java upcall, so the clone should be | |
593 // "gc-robust" by this stage. | |
594 if (klass->has_finalizer()) { | |
595 assert(obj->is_instance(), "should be instanceOop"); | |
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596 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 597 } |
598 | |
599 return JNIHandles::make_local(env, oop(new_obj)); | |
600 JVM_END | |
601 | |
602 // java.lang.Compiler //////////////////////////////////////////////////// | |
603 | |
604 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
605 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
606 // functions are all silently ignored unless JVM warnings are printed. | |
607 | |
608 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
609 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
610 JVM_END | |
611 | |
612 | |
613 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
614 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
615 return JNI_FALSE; | |
616 JVM_END | |
617 | |
618 | |
619 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
620 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
621 return JNI_FALSE; | |
622 JVM_END | |
623 | |
624 | |
625 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
626 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
627 return JNI_FALSE; | |
628 JVM_END | |
629 | |
630 | |
631 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
632 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
633 return NULL; | |
634 JVM_END | |
635 | |
636 | |
637 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
638 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
639 JVM_END | |
640 | |
641 | |
642 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
643 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
644 JVM_END | |
645 | |
646 | |
647 | |
648 // Error message support ////////////////////////////////////////////////////// | |
649 | |
650 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
651 JVMWrapper("JVM_GetLastErrorString"); | |
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652 return (jint)os::lasterror(buf, len); |
0 | 653 JVM_END |
654 | |
655 | |
656 // java.io.File /////////////////////////////////////////////////////////////// | |
657 | |
658 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
659 JVMWrapper2("JVM_NativePath (%s)", path); | |
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660 return os::native_path(path); |
0 | 661 JVM_END |
662 | |
663 | |
664 // Misc. class handling /////////////////////////////////////////////////////////// | |
665 | |
666 | |
667 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
668 JVMWrapper("JVM_GetCallerClass"); | |
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669 |
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670 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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671 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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672 Klass* k = thread->security_get_caller_class(depth); |
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673 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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674 } else { |
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675 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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676 assert(depth == -1, "wrong handshake depth"); |
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677 } |
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678 |
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679 // Getting the class of the caller frame. |
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680 // |
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681 // The call stack at this point looks something like this: |
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682 // |
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683 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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684 // [1] [ @CallerSensitive API.method ] |
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685 // [.] [ (skipped intermediate frames) ] |
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686 // [n] [ caller ] |
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687 vframeStream vfst(thread); |
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688 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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689 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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690 Method* m = vfst.method(); |
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691 assert(m != NULL, "sanity"); |
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692 switch (n) { |
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693 case 0: |
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694 // This must only be called from Reflection.getCallerClass |
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695 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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696 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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697 } |
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698 // fall-through |
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699 case 1: |
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700 // Frame 0 and 1 must be caller sensitive. |
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701 if (!m->caller_sensitive()) { |
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702 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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703 } |
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704 break; |
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705 default: |
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706 if (!m->is_ignored_by_security_stack_walk()) { |
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707 // We have reached the desired frame; return the holder class. |
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708 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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709 } |
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710 break; |
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711 } |
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712 } |
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713 return NULL; |
0 | 714 JVM_END |
715 | |
716 | |
717 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
718 JVMWrapper("JVM_FindPrimitiveClass"); | |
719 oop mirror = NULL; | |
720 BasicType t = name2type(utf); | |
721 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
722 mirror = Universe::java_mirror(t); | |
723 } | |
724 if (mirror == NULL) { | |
725 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
726 } else { | |
727 return (jclass) JNIHandles::make_local(env, mirror); | |
728 } | |
729 JVM_END | |
730 | |
731 | |
732 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
733 JVMWrapper("JVM_ResolveClass"); | |
734 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
735 JVM_END | |
736 | |
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737 |
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738 // Returns a class loaded by the bootstrap class loader; or null |
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739 // if not found. ClassNotFoundException is not thrown. |
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740 // |
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741 // Rationale behind JVM_FindClassFromBootLoader |
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742 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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743 // b> because of (a) java.dll has a direct dependecy on the unexported |
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744 // private symbol "_JVM_FindClassFromClassLoader@20". |
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745 // c> the launcher cannot use the private symbol as it dynamically opens |
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746 // the entry point, so if something changes, the launcher will fail |
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747 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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748 // stable exported interface. |
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749 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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750 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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751 // JVM_FindClassFromClassLoader and will not be backward compatible |
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752 // with older JDKs. |
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753 // Thus a public/stable exported entry point is the right solution, |
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754 // public here means public in linker semantics, and is exported only |
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755 // to the JDK, and is not intended to be a public API. |
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756 |
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757 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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758 const char* name)) |
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759 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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760 |
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761 // Java libraries should ensure that name is never null... |
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762 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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763 // It's impossible to create this class; the name cannot fit |
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764 // into the constant pool. |
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765 return NULL; |
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766 } |
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767 |
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768 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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769 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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770 if (k == NULL) { |
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771 return NULL; |
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772 } |
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773 |
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774 if (TraceClassResolution) { |
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775 trace_class_resolution(k); |
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776 } |
6983 | 777 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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778 JVM_END |
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779 |
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780 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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781 jboolean init, jobject loader, |
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782 jboolean throwError)) |
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783 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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784 throwError ? "error" : "exception"); |
388 | 785 // Java libraries should ensure that name is never null... |
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786 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 787 // It's impossible to create this class; the name cannot fit |
788 // into the constant pool. | |
789 if (throwError) { | |
790 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
791 } else { | |
792 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
793 } | |
794 } | |
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795 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 796 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
797 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
798 Handle(), throwError, THREAD); | |
799 | |
800 if (TraceClassResolution && result != NULL) { | |
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801 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 802 } |
803 return result; | |
0 | 804 JVM_END |
805 | |
806 | |
807 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
808 jboolean init, jclass from)) | |
809 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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810 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 811 // It's impossible to create this class; the name cannot fit |
812 // into the constant pool. | |
813 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
814 } | |
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815 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 816 oop from_class_oop = JNIHandles::resolve(from); |
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817 Klass* from_class = (from_class_oop == NULL) |
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818 ? (Klass*)NULL |
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819 : java_lang_Class::as_Klass(from_class_oop); |
0 | 820 oop class_loader = NULL; |
821 oop protection_domain = NULL; | |
822 if (from_class != NULL) { | |
6983 | 823 class_loader = from_class->class_loader(); |
824 protection_domain = from_class->protection_domain(); | |
0 | 825 } |
826 Handle h_loader(THREAD, class_loader); | |
827 Handle h_prot (THREAD, protection_domain); | |
828 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
829 h_prot, true, thread); | |
830 | |
831 if (TraceClassResolution && result != NULL) { | |
832 // this function is generally only used for class loading during verification. | |
833 ResourceMark rm; | |
834 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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835 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 836 const char * from_name = from_class->external_name(); |
0 | 837 |
838 oop mirror = JNIHandles::resolve_non_null(result); | |
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839 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 840 const char * to = to_class->external_name(); |
0 | 841 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
842 } | |
843 | |
844 return result; | |
845 JVM_END | |
846 | |
847 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
848 if (loader.is_null()) { | |
849 return; | |
850 } | |
851 | |
852 // check whether the current caller thread holds the lock or not. | |
853 // If not, increment the corresponding counter | |
854 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
855 ObjectSynchronizer::owner_self) { | |
856 counter->inc(); | |
857 } | |
858 } | |
859 | |
860 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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861 // and JVM_DefineClassWithSourceCond() |
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862 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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863 jobject loader, const jbyte *buf, |
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864 jsize len, jobject pd, const char *source, |
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865 jboolean verify, TRAPS) { |
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866 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 867 |
875
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868 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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869 JavaThread* jt = (JavaThread*) THREAD; |
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870 |
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871 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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872 ClassLoader::perf_define_appclass_selftime(), |
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873 ClassLoader::perf_define_appclasses(), |
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874 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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875 jt->get_thread_stat()->perf_timers_addr(), |
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876 PerfClassTraceTime::DEFINE_CLASS); |
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877 |
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878 if (UsePerfData) { |
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879 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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880 } |
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881 |
0 | 882 // Since exceptions can be thrown, class initialization can take place |
883 // if name is NULL no check for class name in .class stream has to be made. | |
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884 TempNewSymbol class_name = NULL; |
0 | 885 if (name != NULL) { |
886 const int str_len = (int)strlen(name); | |
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887 if (str_len > Symbol::max_length()) { |
0 | 888 // It's impossible to create this class; the name cannot fit |
889 // into the constant pool. | |
890 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
891 } | |
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892 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 893 } |
894 | |
895 ResourceMark rm(THREAD); | |
896 ClassFileStream st((u1*) buf, len, (char *)source); | |
897 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
898 if (UsePerfData) { | |
899 is_lock_held_by_thread(class_loader, | |
900 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
901 THREAD); | |
902 } | |
903 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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904 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 905 protection_domain, &st, |
973
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906 verify != 0, |
0 | 907 CHECK_NULL); |
908 | |
909 if (TraceClassResolution && k != NULL) { | |
910 trace_class_resolution(k); | |
911 } | |
912 | |
6983 | 913 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 914 } |
915 | |
916 | |
917 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
918 JVMWrapper2("JVM_DefineClass %s", name); | |
919 | |
973
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920 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 921 JVM_END |
922 | |
923 | |
924 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
925 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
926 | |
973
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927 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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928 JVM_END |
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929 |
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930 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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931 jobject loader, const jbyte *buf, |
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932 jsize len, jobject pd, |
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933 const char *source, jboolean verify)) |
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934 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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935 |
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936 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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937 JVM_END |
0 | 938 |
939 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
940 JVMWrapper("JVM_FindLoadedClass"); | |
941 ResourceMark rm(THREAD); | |
942 | |
943 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
944 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
945 | |
946 const char* str = java_lang_String::as_utf8_string(string()); | |
947 // Sanity check, don't expect null | |
948 if (str == NULL) return NULL; | |
949 | |
950 const int str_len = (int)strlen(str); | |
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951 if (str_len > Symbol::max_length()) { |
0 | 952 // It's impossible to create this class; the name cannot fit |
953 // into the constant pool. | |
954 return NULL; | |
955 } | |
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956 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 957 |
958 // Security Note: | |
959 // The Java level wrapper will perform the necessary security check allowing | |
960 // us to pass the NULL as the initiating class loader. | |
961 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
962 if (UsePerfData) { | |
963 is_lock_held_by_thread(h_loader, | |
964 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
965 THREAD); | |
966 } | |
967 | |
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968 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 969 h_loader, |
970 Handle(), | |
971 CHECK_NULL); | |
972 | |
973 return (k == NULL) ? NULL : | |
6983 | 974 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 975 JVM_END |
976 | |
977 | |
978 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
979 | |
980 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
981 assert (cls != NULL, "illegal class"); | |
982 JVMWrapper("JVM_GetClassName"); | |
983 JvmtiVMObjectAllocEventCollector oam; | |
984 ResourceMark rm(THREAD); | |
985 const char* name; | |
986 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
987 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
988 } else { | |
989 // Consider caching interned string in Klass | |
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990 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 991 assert(k->is_klass(), "just checking"); |
6983 | 992 name = k->external_name(); |
0 | 993 } |
994 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
995 return (jstring) JNIHandles::make_local(env, result); | |
996 JVM_END | |
997 | |
998 | |
999 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1000 JVMWrapper("JVM_GetClassInterfaces"); | |
1001 JvmtiVMObjectAllocEventCollector oam; | |
1002 oop mirror = JNIHandles::resolve_non_null(cls); | |
1003 | |
1004 // Special handling for primitive objects | |
1005 if (java_lang_Class::is_primitive(mirror)) { | |
1006 // Primitive objects does not have any interfaces | |
1142 | 1007 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1008 return (jobjectArray) JNIHandles::make_local(env, r); |
1009 } | |
1010 | |
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1011 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1012 // Figure size of result array |
1013 int size; | |
1014 if (klass->oop_is_instance()) { | |
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1015 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1016 } else { |
1017 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1018 size = 2; | |
1019 } | |
1020 | |
1021 // Allocate result array | |
1142 | 1022 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1023 objArrayHandle result (THREAD, r); |
1024 // Fill in result | |
1025 if (klass->oop_is_instance()) { | |
1026 // Regular instance klass, fill in all local interfaces | |
1027 for (int index = 0; index < size; index++) { | |
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1028 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1029 result->obj_at_put(index, k->java_mirror()); |
0 | 1030 } |
1031 } else { | |
1032 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1033 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1034 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1035 } |
1036 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1037 JVM_END | |
1038 | |
1039 | |
1040 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1041 JVMWrapper("JVM_GetClassLoader"); | |
1042 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1043 return NULL; | |
1044 } | |
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1045 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1046 oop loader = k->class_loader(); |
0 | 1047 return JNIHandles::make_local(env, loader); |
1048 JVM_END | |
1049 | |
1050 | |
1051 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1052 JVMWrapper("JVM_IsInterface"); | |
1053 oop mirror = JNIHandles::resolve_non_null(cls); | |
1054 if (java_lang_Class::is_primitive(mirror)) { | |
1055 return JNI_FALSE; | |
1056 } | |
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1057 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1058 jboolean result = k->is_interface(); |
1059 assert(!result || k->oop_is_instance(), | |
0 | 1060 "all interfaces are instance types"); |
1061 // The compiler intrinsic for isInterface tests the | |
1062 // Klass::_access_flags bits in the same way. | |
1063 return result; | |
1064 JVM_END | |
1065 | |
1066 | |
1067 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1068 JVMWrapper("JVM_GetClassSigners"); | |
1069 JvmtiVMObjectAllocEventCollector oam; | |
1070 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1071 // There are no signers for primitive types | |
1072 return NULL; | |
1073 } | |
1074 | |
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1075 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1076 objArrayOop signers = NULL; |
6983 | 1077 if (k->oop_is_instance()) { |
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1078 signers = InstanceKlass::cast(k)->signers(); |
0 | 1079 } |
1080 | |
1081 // If there are no signers set in the class, or if the class | |
1082 // is an array, return NULL. | |
1083 if (signers == NULL) return NULL; | |
1084 | |
1085 // copy of the signers array | |
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1086 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1087 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1088 for (int index = 0; index < signers->length(); index++) { | |
1089 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1090 } | |
1091 | |
1092 // return the copy | |
1093 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1094 JVM_END | |
1095 | |
1096 | |
1097 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1098 JVMWrapper("JVM_SetClassSigners"); | |
1099 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1100 // This call is ignored for primitive types and arrays. | |
1101 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1102 // be called with an array. Only the bootstrap loader creates arrays. | |
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1103 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1104 if (k->oop_is_instance()) { |
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1105 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
0 | 1106 } |
1107 } | |
1108 JVM_END | |
1109 | |
1110 | |
1111 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1112 JVMWrapper("JVM_GetProtectionDomain"); | |
1113 if (JNIHandles::resolve(cls) == NULL) { | |
1114 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1115 } | |
1116 | |
1117 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1118 // Primitive types does not have a protection domain. | |
1119 return NULL; | |
1120 } | |
1121 | |
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1122 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1123 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
0 | 1124 JVM_END |
1125 | |
1126 | |
1127 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1128 // still defined in core libraries as of 1.5. | |
1129 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1130 JVMWrapper("JVM_SetProtectionDomain"); | |
1131 if (JNIHandles::resolve(cls) == NULL) { | |
1132 THROW(vmSymbols::java_lang_NullPointerException()); | |
1133 } | |
1134 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1135 // Call is ignored for primitive types | |
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1136 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1137 |
1138 // cls won't be an array, as this called only from ClassLoader.defineClass | |
6983 | 1139 if (k->oop_is_instance()) { |
0 | 1140 oop pd = JNIHandles::resolve(protection_domain); |
1141 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1142 InstanceKlass::cast(k)->set_protection_domain(pd); |
0 | 1143 } |
1144 } | |
1145 JVM_END | |
1146 | |
1147 | |
1148 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1149 JVMWrapper("JVM_DoPrivileged"); | |
1150 | |
1151 if (action == NULL) { | |
1152 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1153 } | |
1154 | |
1155 // Stack allocated list of privileged stack elements | |
1156 PrivilegedElement pi; | |
1157 | |
1158 // Check that action object understands "Object run()" | |
1159 Handle object (THREAD, JNIHandles::resolve(action)); | |
1160 | |
1161 // get run() method | |
6983 | 1162 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1163 vmSymbols::run_method_name(), |
1164 vmSymbols::void_object_signature()); | |
1165 methodHandle m (THREAD, m_oop); | |
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1166 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1167 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1168 } | |
1169 | |
1170 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1171 vframeStream vfst(thread); | |
1172 vfst.security_get_caller_frame(1); | |
1173 | |
1174 if (!vfst.at_end()) { | |
1175 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1176 thread->set_privileged_stack_top(&pi); | |
1177 } | |
1178 | |
1179 | |
1180 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1181 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1182 Handle pending_exception; | |
1183 JavaValue result(T_OBJECT); | |
1184 JavaCallArguments args(object); | |
1185 JavaCalls::call(&result, m, &args, THREAD); | |
1186 | |
1187 // done with action, remove ourselves from the list | |
1188 if (!vfst.at_end()) { | |
1189 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1190 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1191 } | |
1192 | |
1193 if (HAS_PENDING_EXCEPTION) { | |
1194 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1195 CLEAR_PENDING_EXCEPTION; | |
1196 | |
1142 | 1197 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1198 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1199 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1200 JavaCallArguments args(pending_exception); | |
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1201 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1202 vmSymbols::exception_void_signature(), |
0 | 1203 &args); |
1204 } | |
1205 } | |
1206 | |
1207 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1208 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1209 JVM_END | |
1210 | |
1211 | |
1212 // Returns the inherited_access_control_context field of the running thread. | |
1213 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1214 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1215 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1216 return JNIHandles::make_local(env, result); | |
1217 JVM_END | |
1218 | |
1219 class RegisterArrayForGC { | |
1220 private: | |
1221 JavaThread *_thread; | |
1222 public: | |
1223 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1224 _thread = thread; | |
1225 _thread->register_array_for_gc(array); | |
1226 } | |
1227 | |
1228 ~RegisterArrayForGC() { | |
1229 _thread->register_array_for_gc(NULL); | |
1230 } | |
1231 }; | |
1232 | |
1233 | |
1234 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1235 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1236 if (!UsePrivilegedStack) return NULL; | |
1237 | |
1238 ResourceMark rm(THREAD); | |
1239 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1240 JvmtiVMObjectAllocEventCollector oam; | |
1241 | |
1242 // count the protection domains on the execution stack. We collapse | |
1243 // duplicate consecutive protection domains into a single one, as | |
1244 // well as stopping when we hit a privileged frame. | |
1245 | |
1246 // Use vframeStream to iterate through Java frames | |
1247 vframeStream vfst(thread); | |
1248 | |
1249 oop previous_protection_domain = NULL; | |
1250 Handle privileged_context(thread, NULL); | |
1251 bool is_privileged = false; | |
1252 oop protection_domain = NULL; | |
1253 | |
1254 for(; !vfst.at_end(); vfst.next()) { | |
1255 // get method of frame | |
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1256 Method* method = vfst.method(); |
0 | 1257 intptr_t* frame_id = vfst.frame_id(); |
1258 | |
1259 // check the privileged frames to see if we have a match | |
1260 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1261 // this frame is privileged | |
1262 is_privileged = true; | |
1263 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1264 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1265 } else { | |
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1266 protection_domain = method->method_holder()->protection_domain(); |
0 | 1267 } |
1268 | |
1269 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1270 local_array->push(protection_domain); | |
1271 previous_protection_domain = protection_domain; | |
1272 } | |
1273 | |
1274 if (is_privileged) break; | |
1275 } | |
1276 | |
1277 | |
1278 // either all the domains on the stack were system domains, or | |
1279 // we had a privileged system domain | |
1280 if (local_array->is_empty()) { | |
1281 if (is_privileged && privileged_context.is_null()) return NULL; | |
1282 | |
1283 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1284 return JNIHandles::make_local(env, result); | |
1285 } | |
1286 | |
1287 // the resource area must be registered in case of a gc | |
1288 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1289 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1290 local_array->length(), CHECK_NULL); |
1291 objArrayHandle h_context(thread, context); | |
1292 for (int index = 0; index < local_array->length(); index++) { | |
1293 h_context->obj_at_put(index, local_array->at(index)); | |
1294 } | |
1295 | |
1296 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1297 | |
1298 return JNIHandles::make_local(env, result); | |
1299 JVM_END | |
1300 | |
1301 | |
1302 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1303 JVMWrapper("JVM_IsArrayClass"); | |
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1304 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1305 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1306 JVM_END |
1307 | |
1308 | |
1309 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1310 JVMWrapper("JVM_IsPrimitiveClass"); | |
1311 oop mirror = JNIHandles::resolve_non_null(cls); | |
1312 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1313 JVM_END | |
1314 | |
1315 | |
1316 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1317 JVMWrapper("JVM_GetComponentType"); | |
1318 oop mirror = JNIHandles::resolve_non_null(cls); | |
1319 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1320 return (jclass) JNIHandles::make_local(env, result); | |
1321 JVM_END | |
1322 | |
1323 | |
1324 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1325 JVMWrapper("JVM_GetClassModifiers"); | |
1326 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1327 // Primitive type | |
1328 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1329 } | |
1330 | |
6983 | 1331 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1332 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1333 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1334 return k->modifier_flags(); | |
1335 JVM_END | |
1336 | |
1337 | |
1338 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1339 | |
1340 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1341 JvmtiVMObjectAllocEventCollector oam; | |
1342 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1343 // of an InstanceKlass |
0 | 1344 |
1345 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1346 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1347 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1348 return (jobjectArray)JNIHandles::make_local(env, result); |
1349 } | |
1350 | |
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1351 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1352 InnerClassesIterator iter(k); |
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1353 |
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1354 if (iter.length() == 0) { |
0 | 1355 // Neither an inner nor outer class |
1142 | 1356 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1357 return (jobjectArray)JNIHandles::make_local(env, result); |
1358 } | |
1359 | |
1360 // find inner class info | |
1361 constantPoolHandle cp(thread, k->constants()); | |
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1362 int length = iter.length(); |
0 | 1363 |
1364 // Allocate temp. result array | |
1142 | 1365 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1366 objArrayHandle result (THREAD, r); |
1367 int members = 0; | |
1368 | |
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1369 for (; !iter.done(); iter.next()) { |
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1370 int ioff = iter.inner_class_info_index(); |
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1371 int ooff = iter.outer_class_info_index(); |
0 | 1372 |
1373 if (ioff != 0 && ooff != 0) { | |
1374 // Check to see if the name matches the class we're looking for | |
1375 // before attempting to find the class. | |
1376 if (cp->klass_name_at_matches(k, ooff)) { | |
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1377 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1378 if (outer_klass == k()) { |
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1379 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1380 instanceKlassHandle inner_klass (THREAD, ik); |
1381 | |
1382 // Throws an exception if outer klass has not declared k as | |
1383 // an inner klass | |
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1384 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1385 |
1386 result->obj_at_put(members, inner_klass->java_mirror()); | |
1387 members++; | |
1388 } | |
1389 } | |
1390 } | |
1391 } | |
1392 | |
1393 if (members != length) { | |
1394 // Return array of right length | |
1142 | 1395 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1396 for(int i = 0; i < members; i++) { |
1397 res->obj_at_put(i, result->obj_at(i)); | |
1398 } | |
1399 return (jobjectArray)JNIHandles::make_local(env, res); | |
1400 } | |
1401 | |
1402 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1403 JVM_END | |
1404 | |
1405 | |
1406 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1407 { |
0 | 1408 // ofClass is a reference to a java_lang_Class object. |
1409 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1410 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1411 return NULL; |
1412 } | |
1413 | |
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1414 bool inner_is_member = false; |
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1415 Klass* outer_klass |
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1416 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1417 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1418 if (outer_klass == NULL) return NULL; // already a top-level class |
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1419 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1420 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1421 } |
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1422 JVM_END |
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1423 |
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1424 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1425 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1426 bool* inner_is_member, |
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1427 TRAPS) { |
665
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1428 Thread* thread = THREAD; |
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1429 InnerClassesIterator iter(k); |
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1430 if (iter.length() == 0) { |
0 | 1431 // No inner class info => no declaring class |
1432 return NULL; | |
1433 } | |
1434 | |
1435 constantPoolHandle i_cp(thread, k->constants()); | |
1436 | |
1437 bool found = false; | |
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1438 Klass* ok; |
0 | 1439 instanceKlassHandle outer_klass; |
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1440 *inner_is_member = false; |
0 | 1441 |
1442 // Find inner_klass attribute | |
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1443 for (; !iter.done() && !found; iter.next()) { |
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1444 int ioff = iter.inner_class_info_index(); |
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1445 int ooff = iter.outer_class_info_index(); |
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1446 int noff = iter.inner_name_index(); |
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1447 if (ioff != 0) { |
0 | 1448 // Check to see if the name matches the class we're looking for |
1449 // before attempting to find the class. | |
1450 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1451 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1452 found = (k() == inner_klass); |
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1453 if (found && ooff != 0) { |
0 | 1454 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1455 outer_klass = instanceKlassHandle(thread, ok); | |
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1456 *inner_is_member = true; |
0 | 1457 } |
1458 } | |
1459 } | |
1460 } | |
1461 | |
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1462 if (found && outer_klass.is_null()) { |
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1463 // It may be anonymous; try for that. |
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1464 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1465 if (encl_method_class_idx != 0) { |
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1466 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1467 outer_klass = instanceKlassHandle(thread, ok); |
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1468 *inner_is_member = false; |
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1469 } |
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1470 } |
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1471 |
0 | 1472 // If no inner class attribute found for this class. |
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1473 if (outer_klass.is_null()) return NULL; |
0 | 1474 |
1475 // Throws an exception if outer klass has not declared k as an inner klass | |
665
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1476 // We need evidence that each klass knows about the other, or else |
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1477 // the system could allow a spoof of an inner class to gain access rights. |
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1478 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1479 return outer_klass(); |
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1480 } |
0 | 1481 |
1482 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1483 assert (cls != NULL, "illegal class"); | |
1484 JVMWrapper("JVM_GetClassSignature"); | |
1485 JvmtiVMObjectAllocEventCollector oam; | |
1486 ResourceMark rm(THREAD); | |
1487 // Return null for arrays and primatives | |
1488 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1489 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1490 if (k->oop_is_instance()) { |
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1491 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1492 if (sym == NULL) return NULL; |
0 | 1493 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1494 return (jstring) JNIHandles::make_local(env, str()); | |
1495 } | |
1496 } | |
1497 return NULL; | |
1498 JVM_END | |
1499 | |
1500 | |
1501 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1502 assert (cls != NULL, "illegal class"); | |
1503 JVMWrapper("JVM_GetClassAnnotations"); | |
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1504 |
0 | 1505 // Return null for arrays and primitives |
1506 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1507 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1508 if (k->oop_is_instance()) { |
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1509 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1510 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1511 } |
1512 } | |
1513 return NULL; | |
1514 JVM_END | |
1515 | |
1516 | |
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1517 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1518 // some of this code was adapted from from jni_FromReflectedField |
1519 | |
1520 oop reflected = JNIHandles::resolve_non_null(field); | |
1521 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1522 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1523 int slot = java_lang_reflect_Field::slot(reflected); |
1524 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1525 | |
1526 KlassHandle kh(THREAD, k); | |
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1527 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1528 |
1529 if (modifiers & JVM_ACC_STATIC) { | |
1530 // for static fields we only look in the current class | |
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1531 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1532 assert(false, "cannot find static field"); |
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1533 return false; |
0 | 1534 } |
1535 } else { | |
1536 // for instance fields we start with the current class and work | |
1537 // our way up through the superclass chain | |
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1538 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1539 assert(false, "cannot find instance field"); |
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1540 return false; |
0 | 1541 } |
1542 } | |
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1543 return true; |
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1544 } |
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1545 |
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1546 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1547 // field is a handle to a java.lang.reflect.Field object |
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1548 assert(field != NULL, "illegal field"); |
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1549 JVMWrapper("JVM_GetFieldAnnotations"); |
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1550 |
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1551 fieldDescriptor fd; |
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1552 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1553 if (!gotFd) { |
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1554 return NULL; |
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1555 } |
0 | 1556 |
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1557 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1558 JVM_END |
1559 | |
1560 | |
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1561 static Method* jvm_get_method_common(jobject method) { |
0 | 1562 // some of this code was adapted from from jni_FromReflectedMethod |
1563 | |
1564 oop reflected = JNIHandles::resolve_non_null(method); | |
1565 oop mirror = NULL; | |
1566 int slot = 0; | |
1567 | |
1142 | 1568 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1569 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1570 slot = java_lang_reflect_Constructor::slot(reflected); | |
1571 } else { | |
1142 | 1572 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1573 "wrong type"); |
1574 mirror = java_lang_reflect_Method::clazz(reflected); | |
1575 slot = java_lang_reflect_Method::slot(reflected); | |
1576 } | |
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1577 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1578 |
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1579 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1580 assert(m != NULL, "cannot find method"); |
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1581 return m; // caller has to deal with NULL in product mode |
0 | 1582 } |
1583 | |
1584 | |
1585 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1586 JVMWrapper("JVM_GetMethodAnnotations"); | |
1587 | |
1588 // method is a handle to a java.lang.reflect.Method object | |
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1589 Method* m = jvm_get_method_common(method); |
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|
1590 if (m == NULL) { |
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|
1591 return NULL; |
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|
1592 } |
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|
1593 |
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1594 return (jbyteArray) JNIHandles::make_local(env, |
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1595 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1596 JVM_END |
1597 | |
1598 | |
1599 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1600 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1601 | |
1602 // method is a handle to a java.lang.reflect.Method object | |
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1603 Method* m = jvm_get_method_common(method); |
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1604 if (m == NULL) { |
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|
1605 return NULL; |
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|
1606 } |
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|
1607 |
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1608 return (jbyteArray) JNIHandles::make_local(env, |
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1609 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1610 JVM_END |
1611 | |
1612 | |
1613 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1614 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1615 | |
1616 // method is a handle to a java.lang.reflect.Method object | |
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1617 Method* m = jvm_get_method_common(method); |
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1618 if (m == NULL) { |
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|
1619 return NULL; |
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|
1620 } |
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1621 |
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1622 return (jbyteArray) JNIHandles::make_local(env, |
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1623 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1624 JVM_END |
1625 | |
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1626 /* Type use annotations support (JDK 1.8) */ |
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1627 |
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1628 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1629 assert (cls != NULL, "illegal class"); |
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|
1630 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1631 ResourceMark rm(THREAD); |
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|
1632 // Return null for arrays and primitives |
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1633 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1634 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1635 if (k->oop_is_instance()) { |
8031 | 1636 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1637 if (type_annotations != NULL) { |
8031 | 1638 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1639 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1640 } |
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1641 } |
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|
1642 } |
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|
1643 return NULL; |
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|
1644 JVM_END |
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1645 |
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1646 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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|
1647 assert (method != NULL, "illegal method"); |
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|
1648 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1649 |
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|
1650 // method is a handle to a java.lang.reflect.Method object |
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|
1651 Method* m = jvm_get_method_common(method); |
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|
1652 if (m == NULL) { |
1916ca1dec2f
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|
1653 return NULL; |
1916ca1dec2f
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|
1654 } |
1916ca1dec2f
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|
1655 |
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|
1656 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1657 if (type_annotations != NULL) { |
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|
1658 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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|
1659 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1660 } |
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|
1661 |
1916ca1dec2f
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|
1662 return NULL; |
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|
1663 JVM_END |
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|
1664 |
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|
1665 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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|
1666 assert (field != NULL, "illegal field"); |
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|
1667 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1668 |
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|
1669 fieldDescriptor fd; |
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|
1670 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1671 if (!gotFd) { |
1916ca1dec2f
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|
1672 return NULL; |
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|
1673 } |
1916ca1dec2f
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|
1674 |
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|
1675 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1676 JVM_END |
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|
1677 |
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|
1678 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1679 if (!cp->is_within_bounds(index)) { |
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|
1680 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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|
1681 } |
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|
1682 } |
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|
1683 |
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|
1684 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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|
1685 { |
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|
1686 JVMWrapper("JVM_GetMethodParameters"); |
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|
1687 // method is a handle to a java.lang.reflect.Method object |
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|
1688 Method* method_ptr = jvm_get_method_common(method); |
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|
1689 methodHandle mh (THREAD, method_ptr); |
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|
1690 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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|
1691 const int num_params = mh->method_parameters_length(); |
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|
1692 |
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|
1693 if (0 != num_params) { |
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|
1694 // make sure all the symbols are properly formatted |
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|
1695 for (int i = 0; i < num_params; i++) { |
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|
1696 MethodParametersElement* params = mh->method_parameters_start(); |
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|
1697 int index = params[i].name_cp_index; |
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|
1698 bounds_check(mh->constants(), index, CHECK_NULL); |
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|
1699 |
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|
1700 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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|
1701 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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|
1702 "Wrong type at constant pool index"); |
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|
1703 } |
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|
1704 |
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|
1705 } |
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|
1706 |
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|
1707 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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|
1708 objArrayHandle result (THREAD, result_oop); |
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|
1709 |
7588
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|
1710 for (int i = 0; i < num_params; i++) { |
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|
1711 MethodParametersElement* params = mh->method_parameters_start(); |
7588
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|
1712 // For a 0 index, give a NULL symbol |
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|
1713 Symbol* const sym = 0 != params[i].name_cp_index ? |
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|
1714 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
7983
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|
1715 int flags = params[i].flags; |
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|
1716 oop param = Reflection::new_parameter(reflected_method, i, sym, |
7588
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|
1717 flags, CHECK_NULL); |
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|
1718 result->obj_at_put(i, param); |
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|
1719 } |
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1720 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1721 } else { |
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1722 return (jobjectArray)NULL; |
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1723 } |
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1724 } |
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1725 JVM_END |
0 | 1726 |
1727 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1728 | |
1729 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1730 { | |
1731 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1732 JvmtiVMObjectAllocEventCollector oam; | |
1733 | |
1734 // Exclude primitive types and array types | |
1735 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1736 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1737 // Return empty array |
1142 | 1738 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1739 return (jobjectArray) JNIHandles::make_local(env, res); |
1740 } | |
1741 | |
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1742 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1743 constantPoolHandle cp(THREAD, k->constants()); |
1744 | |
1745 // Ensure class is linked | |
1746 k->link_class(CHECK_NULL); | |
1747 | |
1748 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1749 bool skip_backtrace = false; | |
1750 | |
1751 // Allocate result | |
1752 int num_fields; | |
1753 | |
1754 if (publicOnly) { | |
1755 num_fields = 0; | |
3938 | 1756 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1757 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1758 } |
1759 } else { | |
3938 | 1760 num_fields = k->java_fields_count(); |
0 | 1761 |
1142 | 1762 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1763 num_fields--; |
1764 skip_backtrace = true; | |
1765 } | |
1766 } | |
1767 | |
1142 | 1768 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1769 objArrayHandle result (THREAD, r); |
1770 | |
1771 int out_idx = 0; | |
1772 fieldDescriptor fd; | |
3938 | 1773 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1774 if (skip_backtrace) { |
1775 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1776 int offset = fs.offset(); |
0 | 1777 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1778 } | |
1779 | |
3938 | 1780 if (!publicOnly || fs.access_flags().is_public()) { |
1781 fd.initialize(k(), fs.index()); | |
0 | 1782 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1783 result->obj_at_put(out_idx, field); | |
1784 ++out_idx; | |
1785 } | |
1786 } | |
1787 assert(out_idx == num_fields, "just checking"); | |
1788 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1789 } | |
1790 JVM_END | |
1791 | |
1792 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1793 { | |
1794 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1795 JvmtiVMObjectAllocEventCollector oam; | |
1796 | |
1797 // Exclude primitive types and array types | |
1798 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1799 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1800 // Return empty array |
1142 | 1801 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1802 return (jobjectArray) JNIHandles::make_local(env, res); |
1803 } | |
1804 | |
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1805 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1806 |
1807 // Ensure class is linked | |
1808 k->link_class(CHECK_NULL); | |
1809 | |
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1810 Array<Method*>* methods = k->methods(); |
0 | 1811 int methods_length = methods->length(); |
1812 int num_methods = 0; | |
1813 | |
1814 int i; | |
1815 for (i = 0; i < methods_length; i++) { | |
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1816 methodHandle method(THREAD, methods->at(i)); |
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1817 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1818 if (!publicOnly || method->is_public()) { |
1819 ++num_methods; | |
1820 } | |
1821 } | |
1822 } | |
1823 | |
1824 // Allocate result | |
1142 | 1825 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1826 objArrayHandle result (THREAD, r); |
1827 | |
1828 int out_idx = 0; | |
1829 for (i = 0; i < methods_length; i++) { | |
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1830 methodHandle method(THREAD, methods->at(i)); |
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1831 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1832 if (!publicOnly || method->is_public()) { |
1833 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1834 result->obj_at_put(out_idx, m); | |
1835 ++out_idx; | |
1836 } | |
1837 } | |
1838 } | |
1839 assert(out_idx == num_methods, "just checking"); | |
1840 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1841 } | |
1842 JVM_END | |
1843 | |
1844 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1845 { | |
1846 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1847 JvmtiVMObjectAllocEventCollector oam; | |
1848 | |
1849 // Exclude primitive types and array types | |
1850 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1851 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1852 // Return empty array |
1142 | 1853 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1854 return (jobjectArray) JNIHandles::make_local(env, res); |
1855 } | |
1856 | |
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1857 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1858 |
1859 // Ensure class is linked | |
1860 k->link_class(CHECK_NULL); | |
1861 | |
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1862 Array<Method*>* methods = k->methods(); |
0 | 1863 int methods_length = methods->length(); |
1864 int num_constructors = 0; | |
1865 | |
1866 int i; | |
1867 for (i = 0; i < methods_length; i++) { | |
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1868 methodHandle method(THREAD, methods->at(i)); |
0 | 1869 if (method->is_initializer() && !method->is_static()) { |
1870 if (!publicOnly || method->is_public()) { | |
1871 ++num_constructors; | |
1872 } | |
1873 } | |
1874 } | |
1875 | |
1876 // Allocate result | |
1142 | 1877 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1878 objArrayHandle result(THREAD, r); |
1879 | |
1880 int out_idx = 0; | |
1881 for (i = 0; i < methods_length; i++) { | |
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1882 methodHandle method(THREAD, methods->at(i)); |
0 | 1883 if (method->is_initializer() && !method->is_static()) { |
1884 if (!publicOnly || method->is_public()) { | |
1885 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1886 result->obj_at_put(out_idx, m); | |
1887 ++out_idx; | |
1888 } | |
1889 } | |
1890 } | |
1891 assert(out_idx == num_constructors, "just checking"); | |
1892 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1893 } | |
1894 JVM_END | |
1895 | |
1896 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1897 { | |
1898 JVMWrapper("JVM_GetClassAccessFlags"); | |
1899 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1900 // Primitive type | |
1901 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1902 } | |
1903 | |
6983 | 1904 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1905 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1906 } | |
1907 JVM_END | |
1908 | |
1909 | |
1910 // Constant pool access ////////////////////////////////////////////////////////// | |
1911 | |
1912 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1913 { | |
1914 JVMWrapper("JVM_GetClassConstantPool"); | |
1915 JvmtiVMObjectAllocEventCollector oam; | |
1916 | |
1917 // Return null for primitives and arrays | |
1918 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1919 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1920 if (k->oop_is_instance()) { |
0 | 1921 instanceKlassHandle k_h(THREAD, k); |
1922 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1923 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1924 return JNIHandles::make_local(jcp()); |
1925 } | |
1926 } | |
1927 return NULL; | |
1928 } | |
1929 JVM_END | |
1930 | |
1931 | |
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1932 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1933 { |
1934 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1935 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1936 return cp->length(); |
1937 } | |
1938 JVM_END | |
1939 | |
1940 | |
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1941 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1942 { |
1943 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1944 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1945 bounds_check(cp, index, CHECK_NULL); |
1946 constantTag tag = cp->tag_at(index); | |
1947 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1948 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1949 } | |
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1950 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1951 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1952 } |
1953 JVM_END | |
1954 | |
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1955 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1956 { |
1957 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1958 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1959 bounds_check(cp, index, CHECK_NULL); |
1960 constantTag tag = cp->tag_at(index); | |
1961 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1962 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1963 } | |
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1964 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 1965 if (k == NULL) return NULL; |
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1966 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1967 } |
1968 JVM_END | |
1969 | |
1970 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1971 constantTag tag = cp->tag_at(index); | |
1972 if (!tag.is_method() && !tag.is_interface_method()) { | |
1973 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1974 } | |
1975 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1976 Klass* k_o; |
0 | 1977 if (force_resolution) { |
1978 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1979 } else { | |
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1980 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 1981 if (k_o == NULL) return NULL; |
1982 } | |
1983 instanceKlassHandle k(THREAD, k_o); | |
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1984 Symbol* name = cp->uncached_name_ref_at(index); |
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1985 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1986 methodHandle m (THREAD, k->find_method(name, sig)); |
1987 if (m.is_null()) { | |
1988 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1989 } | |
1990 oop method; | |
1991 if (!m->is_initializer() || m->is_static()) { | |
1992 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1993 } else { | |
1994 method = Reflection::new_constructor(m, CHECK_NULL); | |
1995 } | |
1996 return JNIHandles::make_local(method); | |
1997 } | |
1998 | |
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1999 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2000 { |
2001 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2002 JvmtiVMObjectAllocEventCollector oam; | |
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2003 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2004 bounds_check(cp, index, CHECK_NULL); |
2005 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2006 return res; | |
2007 } | |
2008 JVM_END | |
2009 | |
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2010 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2011 { |
2012 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2013 JvmtiVMObjectAllocEventCollector oam; | |
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2014 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2015 bounds_check(cp, index, CHECK_NULL); |
2016 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2017 return res; | |
2018 } | |
2019 JVM_END | |
2020 | |
2021 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2022 constantTag tag = cp->tag_at(index); | |
2023 if (!tag.is_field()) { | |
2024 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2025 } | |
2026 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2027 Klass* k_o; |
0 | 2028 if (force_resolution) { |
2029 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2030 } else { | |
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2031 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2032 if (k_o == NULL) return NULL; |
2033 } | |
2034 instanceKlassHandle k(THREAD, k_o); | |
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2035 Symbol* name = cp->uncached_name_ref_at(index); |
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2036 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2037 fieldDescriptor fd; |
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2038 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2039 if (target_klass == NULL) { |
2040 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2041 } | |
2042 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2043 return JNIHandles::make_local(field); | |
2044 } | |
2045 | |
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2046 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2047 { |
2048 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2049 JvmtiVMObjectAllocEventCollector oam; | |
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2050 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2051 bounds_check(cp, index, CHECK_NULL); |
2052 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2053 return res; | |
2054 } | |
2055 JVM_END | |
2056 | |
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2057 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2058 { |
2059 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2060 JvmtiVMObjectAllocEventCollector oam; | |
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2061 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2062 bounds_check(cp, index, CHECK_NULL); |
2063 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2064 return res; | |
2065 } | |
2066 JVM_END | |
2067 | |
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2068 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2069 { |
2070 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2071 JvmtiVMObjectAllocEventCollector oam; | |
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2072 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2073 bounds_check(cp, index, CHECK_NULL); |
2074 constantTag tag = cp->tag_at(index); | |
2075 if (!tag.is_field_or_method()) { | |
2076 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2077 } | |
2078 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
2177
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2079 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2080 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2081 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2082 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2083 objArrayHandle dest(THREAD, dest_o); |
2084 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2085 dest->obj_at_put(0, str()); | |
2086 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2087 dest->obj_at_put(1, str()); | |
2088 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2089 dest->obj_at_put(2, str()); | |
2090 return (jobjectArray) JNIHandles::make_local(dest()); | |
2091 } | |
2092 JVM_END | |
2093 | |
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2094 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2095 { |
2096 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2097 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2098 bounds_check(cp, index, CHECK_0); |
2099 constantTag tag = cp->tag_at(index); | |
2100 if (!tag.is_int()) { | |
2101 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2102 } | |
2103 return cp->int_at(index); | |
2104 } | |
2105 JVM_END | |
2106 | |
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2107 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2108 { |
2109 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2110 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2111 bounds_check(cp, index, CHECK_(0L)); |
2112 constantTag tag = cp->tag_at(index); | |
2113 if (!tag.is_long()) { | |
2114 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2115 } | |
2116 return cp->long_at(index); | |
2117 } | |
2118 JVM_END | |
2119 | |
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2120 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2121 { |
2122 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2123 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2124 bounds_check(cp, index, CHECK_(0.0f)); |
2125 constantTag tag = cp->tag_at(index); | |
2126 if (!tag.is_float()) { | |
2127 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2128 } | |
2129 return cp->float_at(index); | |
2130 } | |
2131 JVM_END | |
2132 | |
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2133 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2134 { |
2135 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2136 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2137 bounds_check(cp, index, CHECK_(0.0)); |
2138 constantTag tag = cp->tag_at(index); | |
2139 if (!tag.is_double()) { | |
2140 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2141 } | |
2142 return cp->double_at(index); | |
2143 } | |
2144 JVM_END | |
2145 | |
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2146 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2147 { |
2148 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2149 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2150 bounds_check(cp, index, CHECK_NULL); |
2151 constantTag tag = cp->tag_at(index); | |
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2152 if (!tag.is_string()) { |
0 | 2153 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2154 } | |
2155 oop str = cp->string_at(index, CHECK_NULL); | |
2156 return (jstring) JNIHandles::make_local(str); | |
2157 } | |
2158 JVM_END | |
2159 | |
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2160 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2161 { |
2162 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2163 JvmtiVMObjectAllocEventCollector oam; | |
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2164 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2165 bounds_check(cp, index, CHECK_NULL); |
2166 constantTag tag = cp->tag_at(index); | |
2167 if (!tag.is_symbol()) { | |
2168 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2169 } | |
2177
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2170 Symbol* sym = cp->symbol_at(index); |
0 | 2171 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2172 return (jstring) JNIHandles::make_local(str()); | |
2173 } | |
2174 JVM_END | |
2175 | |
2176 | |
2177 // Assertion support. ////////////////////////////////////////////////////////// | |
2178 | |
2179 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2180 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2181 assert(cls != NULL, "bad class"); | |
2182 | |
2183 oop r = JNIHandles::resolve(cls); | |
2184 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2185 if (java_lang_Class::is_primitive(r)) return false; | |
2186 | |
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2187 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2188 assert(k->oop_is_instance(), "must be an instance klass"); |
2189 if (! k->oop_is_instance()) return false; | |
0 | 2190 |
2191 ResourceMark rm(THREAD); | |
6983 | 2192 const char* name = k->name()->as_C_string(); |
2193 bool system_class = k->class_loader() == NULL; | |
0 | 2194 return JavaAssertions::enabled(name, system_class); |
2195 | |
2196 JVM_END | |
2197 | |
2198 | |
2199 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2200 // command-line assertion arguments (i.e., -ea, -da). | |
2201 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2202 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2203 JvmtiVMObjectAllocEventCollector oam; | |
2204 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2205 return JNIHandles::make_local(env, asd); | |
2206 JVM_END | |
2207 | |
2208 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2209 | |
2210 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2211 | |
2212 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2213 // All functions from this section should call the jvmtiThreadSate function: | |
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2214 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2215 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2216 // was invoked in the middle of the class redefinition. |
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2217 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2218 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2219 | |
2220 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2221 JVMWrapper("JVM_GetClassNameUTF"); | |
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2222 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2223 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2224 return k->name()->as_utf8(); |
0 | 2225 JVM_END |
2226 | |
2227 | |
2228 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2229 JVMWrapper("JVM_GetClassCPTypes"); | |
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2230 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2231 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2232 // types will have length zero if this is not an InstanceKlass |
0 | 2233 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2234 if (k->oop_is_instance()) { |
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2235 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2236 for (int index = cp->length() - 1; index >= 0; index--) { |
2237 constantTag tag = cp->tag_at(index); | |
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2238 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2239 } |
2240 } | |
2241 JVM_END | |
2242 | |
2243 | |
2244 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2245 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2246 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2247 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2248 if (!k->oop_is_instance()) |
0 | 2249 return 0; |
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2250 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2251 JVM_END |
2252 | |
2253 | |
2254 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2255 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2256 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2257 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2258 if (!k->oop_is_instance()) |
0 | 2259 return 0; |
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2260 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2261 JVM_END |
2262 | |
2263 | |
2264 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2265 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2266 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2267 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2268 if (!k->oop_is_instance()) |
0 | 2269 return 0; |
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2270 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2271 JVM_END |
2272 | |
2273 | |
2274 // The following methods, used for the verifier, are never called with | |
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2275 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2276 // Typically, these methods are called in a loop with bounds determined |
2277 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2278 // zero for arrays. | |
2279 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2280 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2281 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2282 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2283 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2284 int length = method->checked_exceptions_length(); |
0 | 2285 if (length > 0) { |
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2286 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2287 for (int i = 0; i < length; i++) { |
2288 exceptions[i] = table[i].class_cp_index; | |
2289 } | |
2290 } | |
2291 JVM_END | |
2292 | |
2293 | |
2294 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2295 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2296 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2297 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2298 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2299 return method->checked_exceptions_length(); |
0 | 2300 JVM_END |
2301 | |
2302 | |
2303 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2304 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2305 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2306 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2307 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2308 memcpy(code, method->code_base(), method->code_size()); |
0 | 2309 JVM_END |
2310 | |
2311 | |
2312 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2313 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2314 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2315 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2316 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2317 return method->code_size(); |
0 | 2318 JVM_END |
2319 | |
2320 | |
2321 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2322 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2323 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2324 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2325 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2326 ExceptionTable extable(method); |
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2327 entry->start_pc = extable.start_pc(entry_index); |
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2328 entry->end_pc = extable.end_pc(entry_index); |
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2329 entry->handler_pc = extable.handler_pc(entry_index); |
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|
2330 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2331 JVM_END |
2332 | |
2333 | |
2334 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2335 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2336 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2337 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2338 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2339 return method->exception_table_length(); |
0 | 2340 JVM_END |
2341 | |
2342 | |
2343 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2344 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2345 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2346 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2347 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2348 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2349 JVM_END |
2350 | |
2351 | |
2352 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2353 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2354 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2355 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2356 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2357 JVM_END |
2358 | |
2359 | |
2360 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2361 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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|
2362 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2363 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2364 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2365 return method->max_locals(); |
0 | 2366 JVM_END |
2367 | |
2368 | |
2369 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2370 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2371 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2372 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2373 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2374 return method->size_of_parameters(); |
0 | 2375 JVM_END |
2376 | |
2377 | |
2378 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2379 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2380 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2381 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2382 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2383 return method->verifier_max_stack(); |
0 | 2384 JVM_END |
2385 | |
2386 | |
2387 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2388 JVMWrapper("JVM_IsConstructorIx"); | |
2389 ResourceMark rm(THREAD); | |
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2390 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2391 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2392 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2393 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2394 JVM_END |
2395 | |
2396 | |
7958
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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diff
changeset
|
2397 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2398 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2399 ResourceMark rm(THREAD); |
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2400 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2401 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2402 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2403 return method->is_overpass(); |
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|
2404 JVM_END |
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|
2405 |
0 | 2406 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2407 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2408 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2409 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2410 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2411 return method->name()->as_utf8(); |
0 | 2412 JVM_END |
2413 | |
2414 | |
2415 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2416 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2417 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2418 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2419 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2420 return method->signature()->as_utf8(); |
0 | 2421 JVM_END |
2422 | |
2423 /** | |
2424 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2425 * read entries in the constant pool. Since the old verifier always | |
2426 * works on a copy of the code, it will not see any rewriting that | |
2427 * may possibly occur in the middle of verification. So it is important | |
2428 * that nothing it calls tries to use the cpCache instead of the raw | |
2429 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2430 */ | |
2431 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2432 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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|
2433 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2434 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2435 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2436 switch (cp->tag_at(cp_index).value()) { |
2437 case JVM_CONSTANT_Fieldref: | |
2438 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2439 default: | |
2440 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2441 } | |
2442 ShouldNotReachHere(); | |
2443 return NULL; | |
2444 JVM_END | |
2445 | |
2446 | |
2447 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2448 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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|
2449 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2450 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2451 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2452 switch (cp->tag_at(cp_index).value()) { |
2453 case JVM_CONSTANT_InterfaceMethodref: | |
2454 case JVM_CONSTANT_Methodref: | |
1059
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|
2455 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2456 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2457 default: | |
2458 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2459 } | |
2460 ShouldNotReachHere(); | |
2461 return NULL; | |
2462 JVM_END | |
2463 | |
2464 | |
2465 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2466 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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|
2467 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2468 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2469 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2470 switch (cp->tag_at(cp_index).value()) { |
2471 case JVM_CONSTANT_InterfaceMethodref: | |
2472 case JVM_CONSTANT_Methodref: | |
1059
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|
2473 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2474 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2475 default: | |
2476 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2477 } | |
2478 ShouldNotReachHere(); | |
2479 return NULL; | |
2480 JVM_END | |
2481 | |
2482 | |
2483 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2484 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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|
2485 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2486 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2487 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2488 switch (cp->tag_at(cp_index).value()) { |
2489 case JVM_CONSTANT_Fieldref: | |
2490 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2491 default: | |
2492 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2493 } | |
2494 ShouldNotReachHere(); | |
2495 return NULL; | |
2496 JVM_END | |
2497 | |
2498 | |
2499 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2500 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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|
2501 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2502 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2503 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2504 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2505 return classname->as_utf8(); |
2506 JVM_END | |
2507 | |
2508 | |
2509 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2510 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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|
2511 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2512 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2513 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2514 switch (cp->tag_at(cp_index).value()) { |
2515 case JVM_CONSTANT_Fieldref: { | |
2516 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2517 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2518 return classname->as_utf8(); |
2519 } | |
2520 default: | |
2521 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2522 } | |
2523 ShouldNotReachHere(); | |
2524 return NULL; | |
2525 JVM_END | |
2526 | |
2527 | |
2528 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2529 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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changeset
|
2530 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2531 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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changeset
|
2532 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2533 switch (cp->tag_at(cp_index).value()) { |
2534 case JVM_CONSTANT_Methodref: | |
2535 case JVM_CONSTANT_InterfaceMethodref: { | |
2536 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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changeset
|
2537 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2538 return classname->as_utf8(); |
2539 } | |
2540 default: | |
2541 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2542 } | |
2543 ShouldNotReachHere(); | |
2544 return NULL; | |
2545 JVM_END | |
2546 | |
2547 | |
3938 | 2548 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2549 JVMWrapper("JVM_GetCPFieldModifiers"); |
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|
2550 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2551 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2552 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2553 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2554 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2555 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2556 switch (cp->tag_at(cp_index).value()) { |
2557 case JVM_CONSTANT_Fieldref: { | |
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changeset
|
2558 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2559 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2560 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2561 if (fs.name() == name && fs.signature() == signature) { | |
2562 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2563 } |
2564 } | |
2565 return -1; | |
2566 } | |
2567 default: | |
2568 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2569 } | |
2570 ShouldNotReachHere(); | |
2571 return 0; | |
2572 JVM_END | |
2573 | |
2574 | |
2575 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2576 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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|
2577 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2578 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2579 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2580 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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6964458: Reimplement class meta-data storage to use native memory
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|
2581 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2582 switch (cp->tag_at(cp_index).value()) { |
2583 case JVM_CONSTANT_Methodref: | |
2584 case JVM_CONSTANT_InterfaceMethodref: { | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2585 Symbol* name = cp->uncached_name_ref_at(cp_index); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2586 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
6725
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diff
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|
2587 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2588 int methods_count = methods->length(); |
2589 for (int i = 0; i < methods_count; i++) { | |
6725
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diff
changeset
|
2590 Method* method = methods->at(i); |
0 | 2591 if (method->name() == name && method->signature() == signature) { |
2592 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2593 } | |
2594 } | |
2595 return -1; | |
2596 } | |
2597 default: | |
2598 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2599 } | |
2600 ShouldNotReachHere(); | |
2601 return 0; | |
2602 JVM_END | |
2603 | |
2604 | |
2605 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2606 | |
2607 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2608 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2609 JVM_END | |
2610 | |
2611 | |
2612 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2613 JVMWrapper("JVM_IsSameClassPackage"); | |
2614 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2615 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
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|
2616 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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|
2617 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2618 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2619 JVM_END | |
2620 | |
2621 | |
2622 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2623 | |
2624 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2625 JVMWrapper2("JVM_Open (%s)", fname); | |
2626 | |
2627 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2628 int result = os::open(fname, flags, mode); |
0 | 2629 if (result >= 0) { |
2630 return result; | |
2631 } else { | |
2632 switch(errno) { | |
2633 case EEXIST: | |
2634 return JVM_EEXIST; | |
2635 default: | |
2636 return -1; | |
2637 } | |
2638 } | |
2639 JVM_END | |
2640 | |
2641 | |
2642 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2643 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2644 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2645 return os::close(fd); |
0 | 2646 JVM_END |
2647 | |
2648 | |
2649 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2650 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2651 | |
2652 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2653 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2654 JVM_END |
2655 | |
2656 | |
2657 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2658 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2659 | |
2660 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2661 return (jint)os::write(fd, buf, nbytes); |
0 | 2662 JVM_END |
2663 | |
2664 | |
2665 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2666 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2667 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2668 return os::available(fd, pbytes); |
0 | 2669 JVM_END |
2670 | |
2671 | |
2672 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2673 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2674 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2675 return os::lseek(fd, offset, whence); |
0 | 2676 JVM_END |
2677 | |
2678 | |
2679 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2680 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
|
2681 return os::ftruncate(fd, length); |
0 | 2682 JVM_END |
2683 | |
2684 | |
2685 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2686 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2687 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2688 return os::fsync(fd); |
0 | 2689 JVM_END |
2690 | |
2691 | |
2692 // Printing support ////////////////////////////////////////////////// | |
2693 extern "C" { | |
2694 | |
2695 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2696 // see bug 4399518, 4417214 | |
2697 if ((intptr_t)count <= 0) return -1; | |
2698 return vsnprintf(str, count, fmt, args); | |
2699 } | |
2700 | |
2701 | |
2702 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2703 va_list args; | |
2704 int len; | |
2705 va_start(args, fmt); | |
2706 len = jio_vsnprintf(str, count, fmt, args); | |
2707 va_end(args); | |
2708 return len; | |
2709 } | |
2710 | |
2711 | |
2712 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2713 int len; | |
2714 va_list args; | |
2715 va_start(args, fmt); | |
2716 len = jio_vfprintf(f, fmt, args); | |
2717 va_end(args); | |
2718 return len; | |
2719 } | |
2720 | |
2721 | |
2722 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2723 if (Arguments::vfprintf_hook() != NULL) { | |
2724 return Arguments::vfprintf_hook()(f, fmt, args); | |
2725 } else { | |
2726 return vfprintf(f, fmt, args); | |
2727 } | |
2728 } | |
2729 | |
2730 | |
2191 | 2731 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2732 int len; |
2733 va_list args; | |
2734 va_start(args, fmt); | |
2735 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2736 va_end(args); | |
2737 return len; | |
2738 } | |
2739 | |
2740 | |
2741 // HotSpot specific jio method | |
2742 void jio_print(const char* s) { | |
2743 // Try to make this function as atomic as possible. | |
2744 if (Arguments::vfprintf_hook() != NULL) { | |
2745 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2746 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2747 // 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
|
2748 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2749 } |
2750 } | |
2751 | |
2752 } // Extern C | |
2753 | |
2754 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2755 | |
2756 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2757 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2758 // OSThread objects. The exception to this rule is when the target object is the thread | |
2759 // doing the operation, in which case we know that the thread won't exit until the | |
2760 // operation is done (all exits being voluntary). There are a few cases where it is | |
2761 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2762 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2763 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2764 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2765 // implementation is local to this file, we always lock Threads_lock for that one. | |
2766 | |
2767 static void thread_entry(JavaThread* thread, TRAPS) { | |
2768 HandleMark hm(THREAD); | |
2769 Handle obj(THREAD, thread->threadObj()); | |
2770 JavaValue result(T_VOID); | |
2771 JavaCalls::call_virtual(&result, | |
2772 obj, | |
1142 | 2773 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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parents:
2162
diff
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|
2774 vmSymbols::run_method_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2775 vmSymbols::void_method_signature(), |
0 | 2776 THREAD); |
2777 } | |
2778 | |
2779 | |
2780 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2781 JVMWrapper("JVM_StartThread"); | |
2782 JavaThread *native_thread = NULL; | |
2783 | |
2784 // We cannot hold the Threads_lock when we throw an exception, | |
2785 // due to rank ordering issues. Example: we might need to grab the | |
2786 // Heap_lock while we construct the exception. | |
2787 bool throw_illegal_thread_state = false; | |
2788 | |
2789 // We must release the Threads_lock before we can post a jvmti event | |
2790 // in Thread::start. | |
2791 { | |
2792 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2793 // we operate. | |
2794 MutexLocker mu(Threads_lock); | |
2795 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2796 // 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
|
2797 // 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
|
2798 // 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
|
2799 // 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
|
2800 // (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
|
2801 // 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
|
2802 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
|
2803 throw_illegal_thread_state = true; |
0 | 2804 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2805 // 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
|
2806 // 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
|
2807 |
0 | 2808 jlong size = |
2809 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2810 // Allocate the C++ Thread structure and create the native thread. The | |
2811 // stack size retrieved from java is signed, but the constructor takes | |
2812 // size_t (an unsigned type), so avoid passing negative values which would | |
2813 // result in really large stacks. | |
2814 size_t sz = size > 0 ? (size_t) size : 0; | |
2815 native_thread = new JavaThread(&thread_entry, sz); | |
2816 | |
2817 // At this point it may be possible that no osthread was created for the | |
2818 // JavaThread due to lack of memory. Check for this situation and throw | |
2819 // an exception if necessary. Eventually we may want to change this so | |
2820 // that we only grab the lock if the thread was created successfully - | |
2821 // then we can also do this check and throw the exception in the | |
2822 // JavaThread constructor. | |
2823 if (native_thread->osthread() != NULL) { | |
2824 // Note: the current thread is not being used within "prepare". | |
2825 native_thread->prepare(jthread); | |
2826 } | |
2827 } | |
2828 } | |
2829 | |
2830 if (throw_illegal_thread_state) { | |
2831 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2832 } | |
2833 | |
2834 assert(native_thread != NULL, "Starting null thread?"); | |
2835 | |
2836 if (native_thread->osthread() == NULL) { | |
2837 // No one should hold a reference to the 'native_thread'. | |
2838 delete native_thread; | |
2839 if (JvmtiExport::should_post_resource_exhausted()) { | |
2840 JvmtiExport::post_resource_exhausted( | |
2841 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2842 "unable to create new native thread"); | |
2843 } | |
2844 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2845 "unable to create new native thread"); | |
2846 } | |
2847 | |
2848 Thread::start(native_thread); | |
2849 | |
2850 JVM_END | |
2851 | |
2852 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2853 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2854 // 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
|
2855 // same thread as the sender, no safepoint is needed. |
0 | 2856 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2857 JVMWrapper("JVM_StopThread"); | |
2858 | |
2859 oop java_throwable = JNIHandles::resolve(throwable); | |
2860 if (java_throwable == NULL) { | |
2861 THROW(vmSymbols::java_lang_NullPointerException()); | |
2862 } | |
2863 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2864 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
|
2865 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2866 "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
|
2867 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
|
2868 // First check if thread is alive |
0 | 2869 if (receiver != NULL) { |
2870 // Check if exception is getting thrown at self (use oop equality, since the | |
2871 // target object might exit) | |
2872 if (java_thread == thread->threadObj()) { | |
2873 THROW_OOP(java_throwable); | |
2874 } else { | |
2875 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2876 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2877 } | |
2878 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2879 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2880 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2881 // - 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
|
2882 // - 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
|
2883 // 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
|
2884 // 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
|
2885 // 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
|
2886 // 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
|
2887 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
|
2888 } |
0 | 2889 JVM_END |
2890 | |
2891 | |
2892 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2893 JVMWrapper("JVM_IsThreadAlive"); | |
2894 | |
2895 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2896 return java_lang_Thread::is_alive(thread_oop); | |
2897 JVM_END | |
2898 | |
2899 | |
2900 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2901 JVMWrapper("JVM_SuspendThread"); | |
2902 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2903 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2904 | |
2905 if (receiver != NULL) { | |
2906 // thread has run and has not exited (still on threads list) | |
2907 | |
2908 { | |
2909 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2910 if (receiver->is_external_suspend()) { | |
2911 // Don't allow nested external suspend requests. We can't return | |
2912 // an error from this interface so just ignore the problem. | |
2913 return; | |
2914 } | |
2915 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2916 return; | |
2917 } | |
2918 receiver->set_external_suspend(); | |
2919 } | |
2920 | |
2921 // java_suspend() will catch threads in the process of exiting | |
2922 // and will ignore them. | |
2923 receiver->java_suspend(); | |
2924 | |
2925 // It would be nice to have the following assertion in all the | |
2926 // time, but it is possible for a racing resume request to have | |
2927 // resumed this thread right after we suspended it. Temporarily | |
2928 // enable this assertion if you are chasing a different kind of | |
2929 // bug. | |
2930 // | |
2931 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2932 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2933 } | |
2934 JVM_END | |
2935 | |
2936 | |
2937 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2938 JVMWrapper("JVM_ResumeThread"); | |
2939 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2940 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2941 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2942 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2943 // looks at it. | |
2944 MutexLocker ml(Threads_lock); | |
2945 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2946 if (thr != NULL) { | |
2947 // the thread has run and is not in the process of exiting | |
2948 thr->java_resume(); | |
2949 } | |
2950 JVM_END | |
2951 | |
2952 | |
2953 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2954 JVMWrapper("JVM_SetThreadPriority"); | |
2955 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2956 MutexLocker ml(Threads_lock); | |
2957 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2958 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2959 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2960 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2961 Thread::set_priority(thr, (ThreadPriority)prio); | |
2962 } | |
2963 JVM_END | |
2964 | |
2965 | |
2966 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2967 JVMWrapper("JVM_Yield"); | |
2968 if (os::dont_yield()) return; | |
4006 | 2969 #ifndef USDT2 |
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2970 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 2971 #else /* USDT2 */ |
2972 HOTSPOT_THREAD_YIELD(); | |
2973 #endif /* USDT2 */ | |
0 | 2974 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
2975 // Critical for similar threading behaviour | |
2976 if (ConvertYieldToSleep) { | |
2977 os::sleep(thread, MinSleepInterval, false); | |
2978 } else { | |
2979 os::yield(); | |
2980 } | |
2981 JVM_END | |
2982 | |
2983 | |
2984 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2985 JVMWrapper("JVM_Sleep"); | |
2986 | |
2987 if (millis < 0) { | |
2988 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2989 } | |
2990 | |
2991 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2992 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2993 } | |
2994 | |
2995 // Save current thread state and restore it at the end of this block. | |
2996 // And set new thread state to SLEEPING. | |
2997 JavaThreadSleepState jtss(thread); | |
2998 | |
4006 | 2999 #ifndef USDT2 |
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3000 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3001 #else /* USDT2 */ |
3002 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3003 millis); | |
3004 #endif /* USDT2 */ | |
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3005 |
0 | 3006 if (millis == 0) { |
3007 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3008 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3009 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3010 // for SOLARIS | |
3011 if (ConvertSleepToYield) { | |
3012 os::yield(); | |
3013 } else { | |
3014 ThreadState old_state = thread->osthread()->get_state(); | |
3015 thread->osthread()->set_state(SLEEPING); | |
3016 os::sleep(thread, MinSleepInterval, false); | |
3017 thread->osthread()->set_state(old_state); | |
3018 } | |
3019 } else { | |
3020 ThreadState old_state = thread->osthread()->get_state(); | |
3021 thread->osthread()->set_state(SLEEPING); | |
3022 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3023 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3024 // us while we were sleeping. We do not overwrite those. | |
3025 if (!HAS_PENDING_EXCEPTION) { | |
4006 | 3026 #ifndef USDT2 |
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3027 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3028 #else /* USDT2 */ |
3029 HOTSPOT_THREAD_SLEEP_END( | |
3030 1); | |
3031 #endif /* USDT2 */ | |
0 | 3032 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3033 // to properly restore the thread state. That's likely wrong. | |
3034 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3035 } | |
3036 } | |
3037 thread->osthread()->set_state(old_state); | |
3038 } | |
4006 | 3039 #ifndef USDT2 |
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3040 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3041 #else /* USDT2 */ |
3042 HOTSPOT_THREAD_SLEEP_END( | |
3043 0); | |
3044 #endif /* USDT2 */ | |
0 | 3045 JVM_END |
3046 | |
3047 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3048 JVMWrapper("JVM_CurrentThread"); | |
3049 oop jthread = thread->threadObj(); | |
3050 assert (thread != NULL, "no current thread!"); | |
3051 return JNIHandles::make_local(env, jthread); | |
3052 JVM_END | |
3053 | |
3054 | |
3055 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3056 JVMWrapper("JVM_CountStackFrames"); | |
3057 | |
3058 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3059 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3060 bool throw_illegal_thread_state = false; | |
3061 int count = 0; | |
3062 | |
3063 { | |
3064 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3065 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3066 // acquire of the lock | |
3067 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3068 | |
3069 if (thr == NULL) { | |
3070 // do nothing | |
3071 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3072 // Check whether this java thread has been suspended already. If not, throws | |
3073 // IllegalThreadStateException. We defer to throw that exception until | |
3074 // Threads_lock is released since loading exception class has to leave VM. | |
3075 // The correct way to test a thread is actually suspended is | |
3076 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3077 // the Threads_lock. The above tests are sufficient for our purposes | |
3078 // provided the walkability of the stack is stable - which it isn't | |
3079 // 100% but close enough for most practical purposes. | |
3080 throw_illegal_thread_state = true; | |
3081 } else { | |
3082 // Count all java activation, i.e., number of vframes | |
3083 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3084 // Native frames are not counted | |
3085 if (!vfst.method()->is_native()) count++; | |
3086 } | |
3087 } | |
3088 } | |
3089 | |
3090 if (throw_illegal_thread_state) { | |
3091 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3092 "this thread is not suspended"); | |
3093 } | |
3094 return count; | |
3095 JVM_END | |
3096 | |
3097 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3098 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3099 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3100 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3101 // outside the critical section. Threads_lock is hot so we want to minimize | |
3102 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3103 // two steps. The 1st phase, performed under Threads_lock, would return | |
3104 // a closure that'd be invoked after Threads_lock was dropped. | |
3105 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3106 // admit spurious wakeups. | |
3107 | |
3108 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3109 JVMWrapper("JVM_Interrupt"); | |
3110 | |
3111 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3112 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3113 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3114 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3115 // acquire of the lock | |
3116 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3117 if (thr != NULL) { | |
3118 Thread::interrupt(thr); | |
3119 } | |
3120 JVM_END | |
3121 | |
3122 | |
3123 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3124 JVMWrapper("JVM_IsInterrupted"); | |
3125 | |
3126 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3127 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3128 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3129 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3130 // acquire of the lock | |
3131 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3132 if (thr == NULL) { | |
3133 return JNI_FALSE; | |
3134 } else { | |
3135 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3136 } | |
3137 JVM_END | |
3138 | |
3139 | |
3140 // Return true iff the current thread has locked the object passed in | |
3141 | |
3142 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3143 JVMWrapper("JVM_HoldsLock"); | |
3144 assert(THREAD->is_Java_thread(), "sanity check"); | |
3145 if (obj == NULL) { | |
3146 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3147 } | |
3148 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3149 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3150 JVM_END | |
3151 | |
3152 | |
3153 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3154 JVMWrapper("JVM_DumpAllStacks"); | |
3155 VM_PrintThreads op; | |
3156 VMThread::execute(&op); | |
3157 if (JvmtiExport::should_post_data_dump()) { | |
3158 JvmtiExport::post_data_dump(); | |
3159 } | |
3160 JVM_END | |
3161 | |
4006 | 3162 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3163 JVMWrapper("JVM_SetNativeThreadName"); | |
3164 ResourceMark rm(THREAD); | |
3165 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3166 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3167 // Thread naming only supported for the current thread, doesn't work for | |
3168 // target threads. | |
3169 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3170 // we don't set the name of an attached thread to avoid stepping | |
3171 // on other programs | |
3172 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3173 os::set_native_thread_name(thread_name); | |
3174 } | |
3175 JVM_END | |
0 | 3176 |
3177 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3178 | |
3179 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3180 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3181 if (jthread->privileged_stack_top() == NULL) return false; | |
3182 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3183 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3184 if (loader == NULL) return true; | |
3185 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3186 if (trusted) return true; | |
3187 } | |
3188 return false; | |
3189 } | |
3190 | |
3191 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3192 JVMWrapper("JVM_CurrentLoadedClass"); | |
3193 ResourceMark rm(THREAD); | |
3194 | |
3195 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3196 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3197 bool trusted = is_trusted_frame(thread, &vfst); | |
3198 if (trusted) return NULL; | |
3199 | |
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3200 Method* m = vfst.method(); |
0 | 3201 if (!m->is_native()) { |
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3202 InstanceKlass* holder = m->method_holder(); |
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3203 oop loader = holder->class_loader(); |
0 | 3204 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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3205 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3206 } |
3207 } | |
3208 } | |
3209 return NULL; | |
3210 JVM_END | |
3211 | |
3212 | |
3213 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3214 JVMWrapper("JVM_CurrentClassLoader"); | |
3215 ResourceMark rm(THREAD); | |
3216 | |
3217 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3218 | |
3219 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3220 bool trusted = is_trusted_frame(thread, &vfst); | |
3221 if (trusted) return NULL; | |
3222 | |
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3223 Method* m = vfst.method(); |
0 | 3224 if (!m->is_native()) { |
6940
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3225 InstanceKlass* holder = m->method_holder(); |
0 | 3226 assert(holder->is_klass(), "just checking"); |
6940
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3227 oop loader = holder->class_loader(); |
0 | 3228 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3229 return JNIHandles::make_local(env, loader); | |
3230 } | |
3231 } | |
3232 } | |
3233 return NULL; | |
3234 JVM_END | |
3235 | |
3236 | |
3237 // Utility object for collecting method holders walking down the stack | |
3238 class KlassLink: public ResourceObj { | |
3239 public: | |
3240 KlassHandle klass; | |
3241 KlassLink* next; | |
3242 | |
3243 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3244 }; | |
3245 | |
3246 | |
3247 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3248 JVMWrapper("JVM_GetClassContext"); | |
3249 ResourceMark rm(THREAD); | |
3250 JvmtiVMObjectAllocEventCollector oam; | |
3251 // Collect linked list of (handles to) method holders | |
3252 KlassLink* first = NULL; | |
3253 KlassLink* last = NULL; | |
3254 int depth = 0; | |
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3255 vframeStream vfst(thread); |
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3256 |
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3257 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3258 // This must only be called from SecurityManager.getClassContext |
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|
3259 Method* m = vfst.method(); |
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|
3260 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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|
3261 m->name() == vmSymbols::getClassContext_name() && |
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|
3262 m->signature() == vmSymbols::void_class_array_signature())) { |
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|
3263 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3264 } |
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|
3265 } |
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|
3266 |
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|
3267 // Collect method holders |
16885e702c88
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|
3268 for (; !vfst.at_end(); vfst.security_next()) { |
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|
3269 Method* m = vfst.method(); |
0 | 3270 // Native frames are not returned |
8866
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|
3271 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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|
3272 Klass* holder = m->method_holder(); |
0 | 3273 assert(holder->is_klass(), "just checking"); |
3274 depth++; | |
3275 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3276 if (first == NULL) { | |
3277 first = last = l; | |
3278 } else { | |
3279 last->next = l; | |
3280 last = l; | |
3281 } | |
3282 } | |
3283 } | |
3284 | |
3285 // Create result array of type [Ljava/lang/Class; | |
1142 | 3286 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3287 // Fill in mirrors corresponding to method holders |
3288 int index = 0; | |
3289 while (first != NULL) { | |
6983 | 3290 result->obj_at_put(index++, first->klass()->java_mirror()); |
0 | 3291 first = first->next; |
3292 } | |
3293 assert(index == depth, "just checking"); | |
3294 | |
3295 return (jobjectArray) JNIHandles::make_local(env, result); | |
3296 JVM_END | |
3297 | |
3298 | |
3299 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3300 JVMWrapper("JVM_ClassDepth"); | |
3301 ResourceMark rm(THREAD); | |
3302 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3303 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3304 | |
3305 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3306 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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3307 if (class_name_sym == NULL) { |
0 | 3308 return -1; |
3309 } | |
3310 | |
3311 int depth = 0; | |
3312 | |
3313 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3314 if (!vfst.method()->is_native()) { | |
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|
3315 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3316 assert(holder->is_klass(), "just checking"); |
6940
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|
3317 if (holder->name() == class_name_sym) { |
0 | 3318 return depth; |
3319 } | |
3320 depth++; | |
3321 } | |
3322 } | |
3323 return -1; | |
3324 JVM_END | |
3325 | |
3326 | |
3327 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3328 JVMWrapper("JVM_ClassLoaderDepth"); | |
3329 ResourceMark rm(THREAD); | |
3330 int depth = 0; | |
3331 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3332 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3333 bool trusted = is_trusted_frame(thread, &vfst); | |
3334 if (trusted) return -1; | |
3335 | |
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3336 Method* m = vfst.method(); |
0 | 3337 if (!m->is_native()) { |
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3338 InstanceKlass* holder = m->method_holder(); |
0 | 3339 assert(holder->is_klass(), "just checking"); |
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3340 oop loader = holder->class_loader(); |
0 | 3341 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3342 return depth; | |
3343 } | |
3344 depth++; | |
3345 } | |
3346 } | |
3347 return -1; | |
3348 JVM_END | |
3349 | |
3350 | |
3351 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3352 | |
3353 | |
3354 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3355 JVMWrapper("JVM_GetSystemPackage"); | |
3356 ResourceMark rm(THREAD); | |
3357 JvmtiVMObjectAllocEventCollector oam; | |
3358 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3359 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3360 return (jstring) JNIHandles::make_local(result); | |
3361 JVM_END | |
3362 | |
3363 | |
3364 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3365 JVMWrapper("JVM_GetSystemPackages"); | |
3366 JvmtiVMObjectAllocEventCollector oam; | |
3367 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3368 return (jobjectArray) JNIHandles::make_local(result); | |
3369 JVM_END | |
3370 | |
3371 | |
3372 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3373 | |
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3374 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3375 if (current_class == NULL) { |
3376 return true; | |
3377 } | |
3378 if ((current_class == field_class) || access.is_public()) { | |
3379 return true; | |
3380 } | |
3381 | |
3382 if (access.is_protected()) { | |
3383 // See if current_class is a subclass of field_class | |
6983 | 3384 if (current_class->is_subclass_of(field_class)) { |
0 | 3385 return true; |
3386 } | |
3387 } | |
3388 | |
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3389 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3390 } |
3391 | |
3392 | |
3393 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3394 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3395 JVMWrapper("JVM_AllocateNewObject"); | |
3396 JvmtiVMObjectAllocEventCollector oam; | |
3397 // Receiver is not used | |
3398 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3399 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3400 | |
3401 // Cannot instantiate primitive types | |
3402 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3403 ResourceMark rm(THREAD); | |
3404 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3405 } | |
3406 | |
3407 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3408 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3409 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3410 ResourceMark rm(THREAD); |
3411 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3412 } | |
3413 | |
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3414 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3415 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3416 |
3417 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3418 | |
3419 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3420 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3421 | |
3422 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3423 curr_klass->initialize(CHECK_NULL); | |
3424 | |
3425 methodHandle m (THREAD, | |
3426 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3427 vmSymbols::void_method_signature())); | |
3428 if (m.is_null()) { | |
3429 ResourceMark rm(THREAD); | |
3430 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3431 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3432 vmSymbols::object_initializer_name(), |
3433 vmSymbols::void_method_signature())); | |
3434 } | |
3435 | |
3436 if (curr_klass == init_klass && !m->is_public()) { | |
3437 // Calling the constructor for class 'curr_klass'. | |
3438 // Only allow calls to a public no-arg constructor. | |
3439 // This path corresponds to creating an Externalizable object. | |
3440 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3441 } | |
3442 | |
3443 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3444 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3445 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3446 } | |
3447 | |
3448 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3449 // Call constructor m. This might call a constructor higher up in the hierachy | |
3450 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3451 | |
3452 return JNIHandles::make_local(obj()); | |
3453 JVM_END | |
3454 | |
3455 | |
3456 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3457 JVMWrapper("JVM_AllocateNewArray"); | |
3458 JvmtiVMObjectAllocEventCollector oam; | |
3459 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3460 | |
3461 if (java_lang_Class::is_primitive(mirror)) { | |
3462 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3463 } | |
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3464 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3465 oop result; |
3466 | |
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3467 if (k->oop_is_typeArray()) { |
0 | 3468 // typeArray |
6831
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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3469 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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3470 } else if (k->oop_is_objArray()) { |
0 | 3471 // objArray |
6831
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3472 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3473 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3474 result = oak->allocate(length, CHECK_NULL); | |
3475 } else { | |
3476 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3477 } | |
3478 return JNIHandles::make_local(env, result); | |
3479 JVM_END | |
3480 | |
3481 | |
3482 // Return the first non-null class loader up the execution stack, or null | |
3483 // if only code from the null class loader is on the stack. | |
3484 | |
3485 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3486 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3487 // UseNewReflection | |
3488 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
6940
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|
3489 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3490 if (loader != NULL) { |
3491 return JNIHandles::make_local(env, loader); | |
3492 } | |
3493 } | |
3494 return NULL; | |
3495 JVM_END | |
3496 | |
3497 | |
3498 // Load a class relative to the most recent class on the stack with a non-null | |
3499 // classloader. | |
3500 // This function has been deprecated and should not be considered part of the | |
3501 // specified JVM interface. | |
3502 | |
3503 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3504 jclass currClass, jstring currClassName)) | |
3505 JVMWrapper("JVM_LoadClass0"); | |
3506 // Receiver is not used | |
3507 ResourceMark rm(THREAD); | |
3508 | |
3509 // Class name argument is not guaranteed to be in internal format | |
3510 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3511 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3512 | |
3513 const char* str = java_lang_String::as_utf8_string(string()); | |
3514 | |
2177
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coleenp
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2162
diff
changeset
|
3515 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3516 // It's impossible to create this class; the name cannot fit |
3517 // into the constant pool. | |
3518 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3519 } | |
3520 | |
2177
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changeset
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3521 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3522 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3523 // Find the most recent class on the stack with a non-null classloader | |
3524 oop loader = NULL; | |
3525 oop protection_domain = NULL; | |
3526 if (curr_klass.is_null()) { | |
3527 for (vframeStream vfst(thread); | |
3528 !vfst.at_end() && loader == NULL; | |
3529 vfst.next()) { | |
3530 if (!vfst.method()->is_native()) { | |
6940
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coleenp
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6831
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changeset
|
3531 InstanceKlass* holder = vfst.method()->method_holder(); |
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coleenp
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6831
diff
changeset
|
3532 loader = holder->class_loader(); |
18fb7da42534
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6831
diff
changeset
|
3533 protection_domain = holder->protection_domain(); |
0 | 3534 } |
3535 } | |
3536 } else { | |
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3537 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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3538 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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3539 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3540 } |
3541 Handle h_loader(THREAD, loader); | |
3542 Handle h_prot (THREAD, protection_domain); | |
657
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diff
changeset
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3543 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:
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diff
changeset
|
3544 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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diff
changeset
|
3545 if (TraceClassResolution && result != NULL) { |
6725
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3546 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
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|
3547 } |
715dceaa89b7
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|
3548 return result; |
0 | 3549 JVM_END |
3550 | |
3551 | |
3552 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3553 | |
3554 | |
3555 // resolve array handle and check arguments | |
3556 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3557 if (arr == NULL) { | |
3558 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3559 } | |
3560 oop a = JNIHandles::resolve_non_null(arr); | |
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3561 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3562 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3563 } | |
3564 return arrayOop(a); | |
3565 } | |
3566 | |
3567 | |
3568 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3569 JVMWrapper("JVM_GetArrayLength"); | |
3570 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3571 return a->length(); | |
3572 JVM_END | |
3573 | |
3574 | |
3575 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3576 JVMWrapper("JVM_Array_Get"); | |
3577 JvmtiVMObjectAllocEventCollector oam; | |
3578 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3579 jvalue value; | |
3580 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3581 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3582 return JNIHandles::make_local(env, box); | |
3583 JVM_END | |
3584 | |
3585 | |
3586 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3587 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3588 jvalue value; | |
3589 value.i = 0; // to initialize value before getting used in CHECK | |
3590 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3591 assert(a->is_typeArray(), "just checking"); | |
3592 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3593 BasicType wide_type = (BasicType) wCode; | |
3594 if (type != wide_type) { | |
3595 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3596 } | |
3597 return value; | |
3598 JVM_END | |
3599 | |
3600 | |
3601 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3602 JVMWrapper("JVM_SetArrayElement"); | |
3603 arrayOop a = check_array(env, arr, false, CHECK); | |
3604 oop box = JNIHandles::resolve(val); | |
3605 jvalue value; | |
3606 value.i = 0; // to initialize value before getting used in CHECK | |
3607 BasicType value_type; | |
3608 if (a->is_objArray()) { | |
3609 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3610 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3611 } else { | |
3612 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3613 } | |
3614 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3615 JVM_END | |
3616 | |
3617 | |
3618 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3619 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3620 arrayOop a = check_array(env, arr, true, CHECK); | |
3621 assert(a->is_typeArray(), "just checking"); | |
3622 BasicType value_type = (BasicType) vCode; | |
3623 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3624 JVM_END | |
3625 | |
3626 | |
3627 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3628 JVMWrapper("JVM_NewArray"); | |
3629 JvmtiVMObjectAllocEventCollector oam; | |
3630 oop element_mirror = JNIHandles::resolve(eltClass); | |
3631 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3632 return JNIHandles::make_local(env, result); | |
3633 JVM_END | |
3634 | |
3635 | |
3636 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3637 JVMWrapper("JVM_NewMultiArray"); | |
3638 JvmtiVMObjectAllocEventCollector oam; | |
3639 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3640 oop element_mirror = JNIHandles::resolve(eltClass); | |
3641 assert(dim_array->is_typeArray(), "just checking"); | |
3642 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3643 return JNIHandles::make_local(env, result); | |
3644 JVM_END | |
3645 | |
3646 | |
3647 // Networking library support //////////////////////////////////////////////////////////////////// | |
3648 | |
3649 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3650 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3651 return 0; |
0 | 3652 JVM_END |
3653 | |
3654 | |
3655 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3656 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
3657 return os::socket(domain, type, protocol); |
0 | 3658 JVM_END |
3659 | |
3660 | |
3661 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3662 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3663 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3664 return os::socket_close(fd); |
0 | 3665 JVM_END |
3666 | |
3667 | |
3668 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3669 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3670 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3671 return os::socket_shutdown(fd, howto); |
0 | 3672 JVM_END |
3673 | |
3674 | |
3675 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3676 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3677 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3678 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3679 JVM_END |
3680 | |
3681 | |
3682 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3683 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3684 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3685 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3686 JVM_END |
3687 | |
3688 | |
3689 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3690 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3691 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3692 return os::timeout(fd, timeout); |
0 | 3693 JVM_END |
3694 | |
3695 | |
3696 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3697 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3698 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3699 return os::listen(fd, count); |
0 | 3700 JVM_END |
3701 | |
3702 | |
3703 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3704 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3705 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3706 return os::connect(fd, him, (socklen_t)len); |
0 | 3707 JVM_END |
3708 | |
3709 | |
3710 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3711 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3712 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3713 return os::bind(fd, him, (socklen_t)len); |
0 | 3714 JVM_END |
3715 | |
3716 | |
3717 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3718 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3719 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3720 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3721 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3722 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3723 return result; |
0 | 3724 JVM_END |
3725 | |
3726 | |
3727 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3728 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3729 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3730 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3731 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
|
3732 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3733 return result; |
0 | 3734 JVM_END |
3735 | |
3736 | |
3737 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3738 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3739 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3740 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3741 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
|
3742 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3743 return result; |
0 | 3744 JVM_END |
3745 | |
3746 | |
3747 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3748 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3749 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3750 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3751 JVM_END |
3752 | |
3753 | |
3754 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3755 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3756 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3757 return os::socket_available(fd, pbytes); |
0 | 3758 JVM_END |
3759 | |
3760 | |
3761 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3762 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3763 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3764 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3765 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
|
3766 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3767 return result; |
0 | 3768 JVM_END |
3769 | |
3770 | |
3771 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3772 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3773 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3774 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3775 JVM_END |
3776 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3777 |
0 | 3778 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3779 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3780 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3781 JVM_END |
0 | 3782 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3783 |
0 | 3784 // Library support /////////////////////////////////////////////////////////////////////////// |
3785 | |
3786 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3787 //%note jvm_ct | |
3788 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3789 char ebuf[1024]; | |
3790 void *load_result; | |
3791 { | |
3792 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3793 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3794 } |
3795 if (load_result == NULL) { | |
3796 char msg[1024]; | |
3797 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3798 // Since 'ebuf' may contain a string encoded using | |
3799 // platform encoding scheme, we need to pass | |
3800 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3801 // as the last argument. See bug 6367357. | |
3802 Handle h_exception = | |
3803 Exceptions::new_exception(thread, | |
3804 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3805 msg, Exceptions::unsafe_to_utf8); | |
3806 | |
3807 THROW_HANDLE_0(h_exception); | |
3808 } | |
3809 return load_result; | |
3810 JVM_END | |
3811 | |
3812 | |
3813 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3814 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3815 os::dll_unload(handle); |
0 | 3816 JVM_END |
3817 | |
3818 | |
3819 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3820 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3821 return os::dll_lookup(handle, name); |
0 | 3822 JVM_END |
3823 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3824 |
0 | 3825 // Floating point support //////////////////////////////////////////////////////////////////// |
3826 | |
3827 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3828 JVMWrapper("JVM_IsNaN"); | |
3829 return g_isnan(a); | |
3830 JVM_END | |
3831 | |
3832 | |
3833 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3834 | |
3835 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3836 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3837 return Threads::is_supported_jni_version_including_1_1(version); | |
3838 JVM_END | |
3839 | |
3840 | |
3841 // String support /////////////////////////////////////////////////////////////////////////// | |
3842 | |
3843 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3844 JVMWrapper("JVM_InternString"); | |
3845 JvmtiVMObjectAllocEventCollector oam; | |
3846 if (str == NULL) return NULL; | |
3847 oop string = JNIHandles::resolve_non_null(str); | |
3848 oop result = StringTable::intern(string, CHECK_NULL); | |
3849 return (jstring) JNIHandles::make_local(env, result); | |
3850 JVM_END | |
3851 | |
3852 | |
3853 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3854 | |
3855 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3856 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3857 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3858 // that only works with java threads. | |
3859 | |
3860 | |
3861 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3862 VM_Exit::block_if_vm_exited(); | |
3863 JVMWrapper("JVM_RawMonitorCreate"); | |
3864 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3865 } | |
3866 | |
3867 | |
3868 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3869 VM_Exit::block_if_vm_exited(); | |
3870 JVMWrapper("JVM_RawMonitorDestroy"); | |
3871 delete ((Mutex*) mon); | |
3872 } | |
3873 | |
3874 | |
3875 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3876 VM_Exit::block_if_vm_exited(); | |
3877 JVMWrapper("JVM_RawMonitorEnter"); | |
3878 ((Mutex*) mon)->jvm_raw_lock(); | |
3879 return 0; | |
3880 } | |
3881 | |
3882 | |
3883 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3884 VM_Exit::block_if_vm_exited(); | |
3885 JVMWrapper("JVM_RawMonitorExit"); | |
3886 ((Mutex*) mon)->jvm_raw_unlock(); | |
3887 } | |
3888 | |
3889 | |
3890 // Support for Serialization | |
3891 | |
3892 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3893 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3894 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3895 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3896 | |
3897 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3898 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3899 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3900 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3901 | |
3902 | |
3903 void initialize_converter_functions() { | |
3904 if (JDK_Version::is_gte_jdk14x_version()) { | |
3905 // These functions only exist for compatibility with 1.3.1 and earlier | |
3906 return; | |
3907 } | |
3908 | |
3909 // called from universe_post_init() | |
3910 assert( | |
3911 int_bits_to_float_fn == NULL && | |
3912 long_bits_to_double_fn == NULL && | |
3913 float_to_int_bits_fn == NULL && | |
3914 double_to_long_bits_fn == NULL , | |
3915 "initialization done twice" | |
3916 ); | |
3917 // initialize | |
3918 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3919 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3920 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3921 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3922 // verify | |
3923 assert( | |
3924 int_bits_to_float_fn != NULL && | |
3925 long_bits_to_double_fn != NULL && | |
3926 float_to_int_bits_fn != NULL && | |
3927 double_to_long_bits_fn != NULL , | |
3928 "initialization failed" | |
3929 ); | |
3930 } | |
3931 | |
3932 | |
3933 // Serialization | |
3934 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3935 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3936 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3937 | |
3938 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3939 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3940 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3941 oop o = JNIHandles::resolve(obj); | |
3942 | |
3943 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3944 THROW(vmSymbols::java_lang_NullPointerException()); | |
3945 } | |
3946 | |
3947 jsize nfids = fids->length(); | |
3948 if (nfids == 0) return; | |
3949 | |
3950 if (tcodes->length() < nfids) { | |
3951 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3952 } | |
3953 | |
3954 jsize off = 0; | |
3955 /* loop through fields, setting values */ | |
3956 for (jsize i = 0; i < nfids; i++) { | |
3957 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3958 int field_offset; | |
3959 if (fid != NULL) { | |
3960 // NULL is a legal value for fid, but retrieving the field offset | |
3961 // trigger assertion in that case | |
3962 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3963 } | |
3964 | |
3965 switch (tcodes->char_at(i)) { | |
3966 case 'Z': | |
3967 if (fid != NULL) { | |
3968 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3969 o->bool_field_put(field_offset, val); | |
3970 } | |
3971 off++; | |
3972 break; | |
3973 | |
3974 case 'B': | |
3975 if (fid != NULL) { | |
3976 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3977 } | |
3978 off++; | |
3979 break; | |
3980 | |
3981 case 'C': | |
3982 if (fid != NULL) { | |
3983 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3984 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3985 o->char_field_put(field_offset, val); | |
3986 } | |
3987 off += 2; | |
3988 break; | |
3989 | |
3990 case 'S': | |
3991 if (fid != NULL) { | |
3992 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3993 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3994 o->short_field_put(field_offset, val); | |
3995 } | |
3996 off += 2; | |
3997 break; | |
3998 | |
3999 case 'I': | |
4000 if (fid != NULL) { | |
4001 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4002 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4003 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4004 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4005 o->int_field_put(field_offset, ival); | |
4006 } | |
4007 off += 4; | |
4008 break; | |
4009 | |
4010 case 'F': | |
4011 if (fid != NULL) { | |
4012 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4013 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4014 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4015 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4016 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
4017 o->float_field_put(field_offset, fval); | |
4018 } | |
4019 off += 4; | |
4020 break; | |
4021 | |
4022 case 'J': | |
4023 if (fid != NULL) { | |
4024 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4025 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4026 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4027 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4028 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4029 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4030 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4031 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4032 o->long_field_put(field_offset, lval); | |
4033 } | |
4034 off += 8; | |
4035 break; | |
4036 | |
4037 case 'D': | |
4038 if (fid != NULL) { | |
4039 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4040 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4041 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4042 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4043 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4044 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4045 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4046 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4047 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
4048 o->double_field_put(field_offset, dval); | |
4049 } | |
4050 off += 8; | |
4051 break; | |
4052 | |
4053 default: | |
4054 // Illegal typecode | |
4055 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4056 } | |
4057 } | |
4058 JVM_END | |
4059 | |
4060 | |
4061 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
4062 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
4063 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
4064 | |
4065 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
4066 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
4067 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
4068 oop o = JNIHandles::resolve(obj); | |
4069 | |
4070 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
4071 THROW(vmSymbols::java_lang_NullPointerException()); | |
4072 } | |
4073 | |
4074 jsize nfids = fids->length(); | |
4075 if (nfids == 0) return; | |
4076 | |
4077 if (tcodes->length() < nfids) { | |
4078 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
4079 } | |
4080 | |
4081 /* loop through fields, fetching values */ | |
4082 jsize off = 0; | |
4083 for (jsize i = 0; i < nfids; i++) { | |
4084 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
4085 if (fid == NULL) { | |
4086 THROW(vmSymbols::java_lang_NullPointerException()); | |
4087 } | |
4088 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4089 | |
4090 switch (tcodes->char_at(i)) { | |
4091 case 'Z': | |
4092 { | |
4093 jboolean val = o->bool_field(field_offset); | |
4094 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
4095 } | |
4096 break; | |
4097 | |
4098 case 'B': | |
4099 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
4100 break; | |
4101 | |
4102 case 'C': | |
4103 { | |
4104 jchar val = o->char_field(field_offset); | |
4105 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4106 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4107 } | |
4108 break; | |
4109 | |
4110 case 'S': | |
4111 { | |
4112 jshort val = o->short_field(field_offset); | |
4113 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4114 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4115 } | |
4116 break; | |
4117 | |
4118 case 'I': | |
4119 { | |
4120 jint val = o->int_field(field_offset); | |
4121 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4122 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4123 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4124 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4125 } | |
4126 break; | |
4127 | |
4128 case 'F': | |
4129 { | |
4130 jfloat fval = o->float_field(field_offset); | |
4131 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
4132 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
4133 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
4134 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
4135 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
4136 } | |
4137 break; | |
4138 | |
4139 case 'J': | |
4140 { | |
4141 jlong val = o->long_field(field_offset); | |
4142 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
4143 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
4144 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
4145 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
4146 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4147 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4148 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4149 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4150 } | |
4151 break; | |
4152 | |
4153 case 'D': | |
4154 { | |
4155 jdouble dval = o->double_field(field_offset); | |
4156 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
4157 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
4158 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
4159 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
4160 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
4161 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
4162 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
4163 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
4164 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4165 } | |
4166 break; | |
4167 | |
4168 default: | |
4169 // Illegal typecode | |
4170 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4171 } | |
4172 } | |
4173 JVM_END | |
4174 | |
4175 | |
4176 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4177 | |
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4178 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4179 // Security Note: |
4180 // The Java level wrapper will perform the necessary security check allowing | |
4181 // us to pass the NULL as the initiating class loader. | |
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4182 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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4183 |
0 | 4184 KlassHandle klass_handle(THREAD, klass); |
4185 // Check if we should initialize the class | |
4186 if (init && klass_handle->oop_is_instance()) { | |
4187 klass_handle->initialize(CHECK_NULL); | |
4188 } | |
4189 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4190 } | |
4191 | |
4192 | |
4193 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4194 | |
4195 #ifndef PRODUCT | |
4196 | |
4197 extern "C" { | |
4198 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4199 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4200 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4201 } | |
4202 | |
4203 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4204 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4205 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
4206 JVM_END | |
4207 | |
4208 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4209 JVMWrapper("JVM_AccessVMIntFlag"); | |
4210 intx v; | |
4211 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4212 *value = (jint)v; | |
4213 return result; | |
4214 JVM_END | |
4215 | |
4216 | |
4217 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4218 JVMWrapper("JVM_VMBreakPoint"); | |
4219 oop the_obj = JNIHandles::resolve(obj); | |
4220 BREAKPOINT; | |
4221 JVM_END | |
4222 | |
4223 | |
4224 #endif | |
4225 | |
4226 | |
4227 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4228 | |
4229 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4230 JVMWrapper("JVM_InvokeMethod"); | |
4231 Handle method_handle; | |
4232 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4233 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4234 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4235 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4236 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4237 jobject res = JNIHandles::make_local(env, result); | |
4238 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4239 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4240 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4241 if (java_lang_Class::is_primitive(ret_type)) { | |
4242 // Only for primitive type vm allocates memory for java object. | |
4243 // See box() method. | |
4244 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4245 } | |
4246 } | |
4247 return res; | |
4248 } else { | |
4249 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4250 } | |
4251 JVM_END | |
4252 | |
4253 | |
4254 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4255 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4256 oop constructor_mirror = JNIHandles::resolve(c); | |
4257 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4258 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4259 jobject res = JNIHandles::make_local(env, result); | |
4260 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4261 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4262 } | |
4263 return res; | |
4264 JVM_END | |
4265 | |
4266 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4267 | |
4268 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4269 JVMWrapper("JVM_SupportsCX8"); | |
4270 return VM_Version::supports_cx8(); | |
4271 JVM_END | |
4272 | |
4273 | |
4274 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4275 JVMWrapper("JVM_CX8Field"); | |
4276 jlong res; | |
4277 oop o = JNIHandles::resolve(obj); | |
4278 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4279 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4280 | |
4281 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4282 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4283 | |
4284 return res == oldVal; | |
4285 JVM_END | |
4286 | |
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4287 // DTrace /////////////////////////////////////////////////////////////////// |
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4288 |
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4289 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4290 JVMWrapper("JVM_DTraceGetVersion"); |
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4291 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4292 JVM_END |
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|
4293 |
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4294 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4295 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4296 JVM_DTraceProvider* providers)) |
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4297 JVMWrapper("JVM_DTraceActivate"); |
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4298 return DTraceJSDT::activate( |
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|
4299 version, module_name, providers_count, providers, CHECK_0); |
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4300 JVM_END |
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4301 |
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4302 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4303 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4304 return DTraceJSDT::is_probe_enabled(method); |
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4305 JVM_END |
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|
4306 |
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4307 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4308 JVMWrapper("JVM_DTraceDispose"); |
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4309 DTraceJSDT::dispose(handle); |
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4310 JVM_END |
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4311 |
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4312 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4313 JVMWrapper("JVM_DTraceIsSupported"); |
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4314 return DTraceJSDT::is_supported(); |
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4315 JVM_END |
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4316 |
0 | 4317 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4318 // jvmti agent threads, and JNI attaching threads are skipped) | |
4319 // See CR 6404306 regarding JNI attaching threads | |
4320 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4321 ResourceMark rm(THREAD); | |
4322 ThreadsListEnumerator tle(THREAD, false, false); | |
4323 JvmtiVMObjectAllocEventCollector oam; | |
4324 | |
4325 int num_threads = tle.num_threads(); | |
1142 | 4326 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4327 objArrayHandle threads_ah(THREAD, r); |
4328 | |
4329 for (int i = 0; i < num_threads; i++) { | |
4330 Handle h = tle.get_threadObj(i); | |
4331 threads_ah->obj_at_put(i, h()); | |
4332 } | |
4333 | |
4334 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4335 JVM_END | |
4336 | |
4337 | |
4338 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4339 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4340 // the corresponding entry in the given threads array | |
4341 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4342 JVMWrapper("JVM_DumpThreads"); | |
4343 JvmtiVMObjectAllocEventCollector oam; | |
4344 | |
4345 // Check if threads is null | |
4346 if (threads == NULL) { | |
4347 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4348 } | |
4349 | |
4350 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4351 objArrayHandle ah(THREAD, a); | |
4352 int num_threads = ah->length(); | |
4353 // check if threads is non-empty array | |
4354 if (num_threads == 0) { | |
4355 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4356 } | |
4357 | |
4358 // check if threads is not an array of objects of Thread class | |
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4359 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4360 if (k != SystemDictionary::Thread_klass()) { |
0 | 4361 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4362 } | |
4363 | |
4364 ResourceMark rm(THREAD); | |
4365 | |
4366 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4367 for (int i = 0; i < num_threads; i++) { | |
4368 oop thread_obj = ah->obj_at(i); | |
4369 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4370 thread_handle_array->append(h); | |
4371 } | |
4372 | |
4373 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4374 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4375 | |
4376 JVM_END | |
4377 | |
4378 // JVM monitoring and management support | |
4379 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4380 return Management::get_jmm_interface(version); | |
4381 JVM_END | |
4382 | |
4383 // com.sun.tools.attach.VirtualMachine agent properties support | |
4384 // | |
4385 // Initialize the agent properties with the properties maintained in the VM | |
4386 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4387 JVMWrapper("JVM_InitAgentProperties"); | |
4388 ResourceMark rm; | |
4389 | |
4390 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4391 | |
4392 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4393 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4394 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4395 return properties; | |
4396 JVM_END | |
4397 | |
4398 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4399 { | |
4400 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4401 JvmtiVMObjectAllocEventCollector oam; | |
4402 | |
4403 if (ofClass == NULL) { | |
4404 return NULL; | |
4405 } | |
4406 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4407 // Special handling for primitive objects | |
4408 if (java_lang_Class::is_primitive(mirror())) { | |
4409 return NULL; | |
4410 } | |
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4411 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4412 if (!k->oop_is_instance()) { |
0 | 4413 return NULL; |
4414 } | |
4415 instanceKlassHandle ik_h(THREAD, k); | |
4416 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4417 if (encl_method_class_idx == 0) { | |
4418 return NULL; | |
4419 } | |
1142 | 4420 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4421 objArrayHandle dest(THREAD, dest_o); |
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4422 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4423 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4424 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4425 if (encl_method_method_idx != 0) { | |
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4426 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4427 extract_low_short_from_int( |
4428 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4429 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4430 dest->obj_at_put(1, str()); | |
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4431 sym = ik_h->constants()->symbol_at( |
0 | 4432 extract_high_short_from_int( |
4433 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4434 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4435 dest->obj_at_put(2, str()); | |
4436 } | |
4437 return (jobjectArray) JNIHandles::make_local(dest()); | |
4438 } | |
4439 JVM_END | |
4440 | |
4441 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4442 jint javaThreadState)) | |
4443 { | |
4444 // If new thread states are added in future JDK and VM versions, | |
4445 // this should check if the JDK version is compatible with thread | |
4446 // states supported by the VM. Return NULL if not compatible. | |
4447 // | |
4448 // This function must map the VM java_lang_Thread::ThreadStatus | |
4449 // to the Java thread state that the JDK supports. | |
4450 // | |
4451 | |
4452 typeArrayHandle values_h; | |
4453 switch (javaThreadState) { | |
4454 case JAVA_THREAD_STATE_NEW : { | |
4455 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4456 values_h = typeArrayHandle(THREAD, r); | |
4457 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4458 break; | |
4459 } | |
4460 case JAVA_THREAD_STATE_RUNNABLE : { | |
4461 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4462 values_h = typeArrayHandle(THREAD, r); | |
4463 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4464 break; | |
4465 } | |
4466 case JAVA_THREAD_STATE_BLOCKED : { | |
4467 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4468 values_h = typeArrayHandle(THREAD, r); | |
4469 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4470 break; | |
4471 } | |
4472 case JAVA_THREAD_STATE_WAITING : { | |
4473 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4474 values_h = typeArrayHandle(THREAD, r); | |
4475 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4476 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4477 break; | |
4478 } | |
4479 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4480 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4481 values_h = typeArrayHandle(THREAD, r); | |
4482 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4483 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4484 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4485 break; | |
4486 } | |
4487 case JAVA_THREAD_STATE_TERMINATED : { | |
4488 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4489 values_h = typeArrayHandle(THREAD, r); | |
4490 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4491 break; | |
4492 } | |
4493 default: | |
4494 // Unknown state - probably incompatible JDK version | |
4495 return NULL; | |
4496 } | |
4497 | |
4498 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4499 } | |
4500 JVM_END | |
4501 | |
4502 | |
4503 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4504 jint javaThreadState, | |
4505 jintArray values)) | |
4506 { | |
4507 // If new thread states are added in future JDK and VM versions, | |
4508 // this should check if the JDK version is compatible with thread | |
4509 // states supported by the VM. Return NULL if not compatible. | |
4510 // | |
4511 // This function must map the VM java_lang_Thread::ThreadStatus | |
4512 // to the Java thread state that the JDK supports. | |
4513 // | |
4514 | |
4515 ResourceMark rm; | |
4516 | |
4517 // Check if threads is null | |
4518 if (values == NULL) { | |
4519 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4520 } | |
4521 | |
4522 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4523 typeArrayHandle values_h(THREAD, v); | |
4524 | |
4525 objArrayHandle names_h; | |
4526 switch (javaThreadState) { | |
4527 case JAVA_THREAD_STATE_NEW : { | |
4528 assert(values_h->length() == 1 && | |
4529 values_h->int_at(0) == java_lang_Thread::NEW, | |
4530 "Invalid threadStatus value"); | |
4531 | |
1142 | 4532 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4533 1, /* only 1 substate */ |
4534 CHECK_NULL); | |
4535 names_h = objArrayHandle(THREAD, r); | |
4536 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4537 names_h->obj_at_put(0, name()); | |
4538 break; | |
4539 } | |
4540 case JAVA_THREAD_STATE_RUNNABLE : { | |
4541 assert(values_h->length() == 1 && | |
4542 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4543 "Invalid threadStatus value"); | |
4544 | |
1142 | 4545 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4546 1, /* only 1 substate */ |
4547 CHECK_NULL); | |
4548 names_h = objArrayHandle(THREAD, r); | |
4549 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4550 names_h->obj_at_put(0, name()); | |
4551 break; | |
4552 } | |
4553 case JAVA_THREAD_STATE_BLOCKED : { | |
4554 assert(values_h->length() == 1 && | |
4555 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4556 "Invalid threadStatus value"); | |
4557 | |
1142 | 4558 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4559 1, /* only 1 substate */ |
4560 CHECK_NULL); | |
4561 names_h = objArrayHandle(THREAD, r); | |
4562 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4563 names_h->obj_at_put(0, name()); | |
4564 break; | |
4565 } | |
4566 case JAVA_THREAD_STATE_WAITING : { | |
4567 assert(values_h->length() == 2 && | |
4568 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4569 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4570 "Invalid threadStatus value"); | |
1142 | 4571 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4572 2, /* number of substates */ |
4573 CHECK_NULL); | |
4574 names_h = objArrayHandle(THREAD, r); | |
4575 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4576 CHECK_NULL); | |
4577 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4578 CHECK_NULL); | |
4579 names_h->obj_at_put(0, name0()); | |
4580 names_h->obj_at_put(1, name1()); | |
4581 break; | |
4582 } | |
4583 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4584 assert(values_h->length() == 3 && | |
4585 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4586 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4587 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4588 "Invalid threadStatus value"); | |
1142 | 4589 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4590 3, /* number of substates */ |
4591 CHECK_NULL); | |
4592 names_h = objArrayHandle(THREAD, r); | |
4593 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4594 CHECK_NULL); | |
4595 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4596 CHECK_NULL); | |
4597 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4598 CHECK_NULL); | |
4599 names_h->obj_at_put(0, name0()); | |
4600 names_h->obj_at_put(1, name1()); | |
4601 names_h->obj_at_put(2, name2()); | |
4602 break; | |
4603 } | |
4604 case JAVA_THREAD_STATE_TERMINATED : { | |
4605 assert(values_h->length() == 1 && | |
4606 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4607 "Invalid threadStatus value"); | |
1142 | 4608 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4609 1, /* only 1 substate */ |
4610 CHECK_NULL); | |
4611 names_h = objArrayHandle(THREAD, r); | |
4612 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4613 names_h->obj_at_put(0, name()); | |
4614 break; | |
4615 } | |
4616 default: | |
4617 // Unknown state - probably incompatible JDK version | |
4618 return NULL; | |
4619 } | |
4620 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4621 } | |
4622 JVM_END | |
4623 | |
4624 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4625 { | |
4626 memset(info, 0, sizeof(info_size)); | |
4627 | |
4628 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4629 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4630 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4631 | |
4632 // when we add a new capability in the jvm_version_info struct, we should also | |
4633 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4634 // counter defined in runtimeService.cpp. | |
4635 info->is_attachable = AttachListener::is_attach_supported(); | |
4636 } | |
4637 JVM_END |