Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvm.cpp @ 11020:3a0774193f71
Merge
author | chegar |
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date | Wed, 19 Jun 2013 11:02:10 +0100 |
parents | eaf3742822ec f2110083203d |
children | 9f3e3245b50f |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
80 # include "jvm_bsd.h" | |
81 #endif | |
1972 | 82 |
0 | 83 #include <errno.h> |
84 | |
4006 | 85 #ifndef USDT2 |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 89 #endif /* !USDT2 */ |
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90 |
0 | 91 /* |
92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
94 usage because if objects are move this may cause various memory stomps, bus | |
95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
96 failures": | |
97 | |
98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
100 | |
101 // Object address to be held directly in mirror & not visible to GC | |
102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
103 | |
104 // If this ctor can hit a safepoint, moving objects around, then | |
105 ComplexConstructor foo; | |
106 | |
107 // Boom! mirror may point to JUNK instead of the intended object | |
108 (some dereference of mirror) | |
109 | |
110 // Here's another call that may block for GC, making mirror stale | |
111 MutexLocker ml(some_lock); | |
112 | |
113 // And here's an initializer that can result in a stale oop | |
114 // all in one step. | |
115 oop o = call_that_can_throw_exception(TRAPS); | |
116 | |
117 | |
118 The solution is to keep the oop declaration BELOW the ctor or function | |
119 call that might cause a GC, do another resolve to reassign the oop, or | |
120 consider use of a Handle instead of an oop so there is immunity from object | |
121 motion. But note that the "QUICK" entries below do not have a handlemark | |
122 and thus can only support use of handles passed in. | |
123 */ | |
124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 126 ResourceMark rm; |
127 int line_number = -1; | |
128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
0 | 131 JavaThread* jthread = JavaThread::current(); |
132 if (jthread->has_last_Java_frame()) { | |
133 vframeStream vfst(jthread); | |
134 | |
135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
0 | 142 |
143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 148 break; |
149 } | |
150 last_caller = m; | |
151 vfst.next(); | |
152 } | |
153 // if this is called from Class.forName0 and that is called from Class.forName, | |
154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
156 bool found_it = false; | |
157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
160 vfst.next(); | |
161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 163 vfst.method()->name() == vmSymbols::forName_name()) { |
164 vfst.next(); | |
165 found_it = true; | |
166 } | |
167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
0 | 169 vmSymbols::java_lang_ClassLoader() && |
170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
171 last_caller->name() == vmSymbols::loadClass_name())) { | |
172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
0 | 178 } |
179 if (found_it && !vfst.at_end()) { | |
180 // found the caller | |
181 caller = vfst.method()->method_holder(); | |
182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
0 | 188 if (s != NULL) { |
189 source_file = s->as_C_string(); | |
190 } | |
191 } | |
192 } | |
193 if (caller != NULL) { | |
194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
0 | 197 // print in a single call to reduce interleaving between threads |
198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 202 } |
203 } | |
204 } | |
205 } | |
206 | |
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207 void trace_class_resolution(Klass* to_class) { |
0 | 208 EXCEPTION_MARK; |
209 trace_class_resolution_impl(to_class, THREAD); | |
210 if (HAS_PENDING_EXCEPTION) { | |
211 CLEAR_PENDING_EXCEPTION; | |
212 } | |
213 } | |
214 | |
215 // Wrapper to trace JVM functions | |
216 | |
217 #ifdef ASSERT | |
218 class JVMTraceWrapper : public StackObj { | |
219 public: | |
220 JVMTraceWrapper(const char* format, ...) { | |
221 if (TraceJVMCalls) { | |
222 va_list ap; | |
223 va_start(ap, format); | |
224 tty->print("JVM "); | |
225 tty->vprint_cr(format, ap); | |
226 va_end(ap); | |
227 } | |
228 } | |
229 }; | |
230 | |
231 Histogram* JVMHistogram; | |
232 volatile jint JVMHistogram_lock = 0; | |
233 | |
234 class JVMHistogramElement : public HistogramElement { | |
235 public: | |
236 JVMHistogramElement(const char* name); | |
237 }; | |
238 | |
239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
240 _name = elementName; | |
241 uintx count = 0; | |
242 | |
243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
245 count +=1; | |
246 if ( (WarnOnStalledSpinLock > 0) | |
247 && (count % WarnOnStalledSpinLock == 0)) { | |
248 warning("JVMHistogram_lock seems to be stalled"); | |
249 } | |
250 } | |
251 } | |
252 | |
253 if(JVMHistogram == NULL) | |
254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
255 | |
256 JVMHistogram->add_element(this); | |
257 Atomic::dec(&JVMHistogram_lock); | |
258 } | |
259 | |
260 #define JVMCountWrapper(arg) \ | |
261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
263 | |
264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
268 #else | |
269 #define JVMWrapper(arg1) | |
270 #define JVMWrapper2(arg1, arg2) | |
271 #define JVMWrapper3(arg1, arg2, arg3) | |
272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
273 #endif | |
274 | |
275 | |
276 // Interface version ///////////////////////////////////////////////////////////////////// | |
277 | |
278 | |
279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
280 return JVM_INTERFACE_VERSION; | |
281 JVM_END | |
282 | |
283 | |
284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
285 | |
286 | |
287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
288 JVMWrapper("JVM_CurrentTimeMillis"); | |
289 return os::javaTimeMillis(); | |
290 JVM_END | |
291 | |
292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
293 JVMWrapper("JVM_NanoTime"); | |
294 return os::javaTimeNanos(); | |
295 JVM_END | |
296 | |
297 | |
298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
299 jobject dst, jint dst_pos, jint length)) | |
300 JVMWrapper("JVM_ArrayCopy"); | |
301 // Check if we have null pointers | |
302 if (src == NULL || dst == NULL) { | |
303 THROW(vmSymbols::java_lang_NullPointerException()); | |
304 } | |
305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
309 // Do copy | |
6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 311 JVM_END |
312 | |
313 | |
314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
315 JavaValue r(T_OBJECT); | |
316 // public synchronized Object put(Object key, Object value); | |
317 HandleMark hm(THREAD); | |
318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
320 JavaCalls::call_virtual(&r, | |
321 props, | |
1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
0 | 325 key_str, |
326 value_str, | |
327 THREAD); | |
328 } | |
329 | |
330 | |
331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
332 | |
333 | |
334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
335 JVMWrapper("JVM_InitProperties"); | |
336 ResourceMark rm; | |
337 | |
338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
339 | |
340 // System property list includes both user set via -D option and | |
341 // jvm system specific properties. | |
342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
343 PUTPROP(props, p->key(), p->value()); | |
344 } | |
345 | |
346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
347 // to the sun.nio.MaxDirectMemorySize property. | |
348 // Do this after setting user properties to prevent people | |
349 // from setting the value with a -D option, as requested. | |
350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
0 | 358 } |
359 | |
360 // JVM monitoring and management support | |
361 // Add the sun.management.compiler property for the compiler's name | |
362 { | |
363 #undef CSIZE | |
364 #if defined(_LP64) || defined(_WIN64) | |
365 #define CSIZE "64-Bit " | |
366 #else | |
367 #define CSIZE | |
368 #endif // 64bit | |
369 | |
370 #ifdef TIERED | |
371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
372 #else | |
373 #if defined(COMPILER1) | |
374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
375 #elif defined(COMPILER2) | |
376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
377 #else | |
378 const char* compiler_name = ""; | |
379 #endif // compilers | |
380 #endif // TIERED | |
381 | |
382 if (*compiler_name != '\0' && | |
383 (Arguments::mode() != Arguments::_int)) { | |
384 PUTPROP(props, "sun.management.compiler", compiler_name); | |
385 } | |
386 } | |
387 | |
388 return properties; | |
389 JVM_END | |
390 | |
391 | |
392 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
393 | |
394 extern volatile jint vm_created; | |
395 | |
396 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
397 if (vm_created != 0 && (code == 0)) { | |
398 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
399 Universe::run_finalizers_on_exit(); | |
400 } | |
401 before_exit(thread); | |
402 vm_exit(code); | |
403 JVM_END | |
404 | |
405 | |
406 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
407 before_exit(thread); | |
408 vm_exit(code); | |
409 JVM_END | |
410 | |
411 | |
412 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
413 register_on_exit_function(func); | |
414 JVM_END | |
415 | |
416 | |
417 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
418 JVMWrapper("JVM_GC"); | |
419 if (!DisableExplicitGC) { | |
420 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
421 } | |
422 JVM_END | |
423 | |
424 | |
425 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
426 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
427 return Universe::heap()->millis_since_last_gc(); | |
428 JVM_END | |
429 | |
430 | |
431 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
432 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
433 JVM_END | |
434 | |
435 | |
436 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
437 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
438 JVM_END | |
439 | |
440 static inline jlong convert_size_t_to_jlong(size_t val) { | |
441 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
442 NOT_LP64 (return (jlong)val;) | |
443 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
444 } | |
445 | |
446 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
447 JVMWrapper("JVM_TotalMemory"); | |
448 size_t n = Universe::heap()->capacity(); | |
449 return convert_size_t_to_jlong(n); | |
450 JVM_END | |
451 | |
452 | |
453 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
454 JVMWrapper("JVM_FreeMemory"); | |
455 CollectedHeap* ch = Universe::heap(); | |
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456 size_t n; |
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457 { |
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458 MutexLocker x(Heap_lock); |
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459 n = ch->capacity() - ch->used(); |
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460 } |
0 | 461 return convert_size_t_to_jlong(n); |
462 JVM_END | |
463 | |
464 | |
465 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
466 JVMWrapper("JVM_MaxMemory"); | |
467 size_t n = Universe::heap()->max_capacity(); | |
468 return convert_size_t_to_jlong(n); | |
469 JVM_END | |
470 | |
471 | |
472 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
473 JVMWrapper("JVM_ActiveProcessorCount"); | |
474 return os::active_processor_count(); | |
475 JVM_END | |
476 | |
477 | |
478 | |
479 // java.lang.Throwable ////////////////////////////////////////////////////// | |
480 | |
481 | |
482 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
483 JVMWrapper("JVM_FillInStackTrace"); | |
484 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
485 java_lang_Throwable::fill_in_stack_trace(exception); | |
486 JVM_END | |
487 | |
488 | |
489 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
490 JVMWrapper("JVM_GetStackTraceDepth"); | |
491 oop exception = JNIHandles::resolve(throwable); | |
492 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
493 JVM_END | |
494 | |
495 | |
496 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
497 JVMWrapper("JVM_GetStackTraceElement"); | |
498 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
499 oop exception = JNIHandles::resolve(throwable); | |
500 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
501 return JNIHandles::make_local(env, element); | |
502 JVM_END | |
503 | |
504 | |
505 // java.lang.Object /////////////////////////////////////////////// | |
506 | |
507 | |
508 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
509 JVMWrapper("JVM_IHashCode"); | |
510 // as implemented in the classic virtual machine; return 0 if object is NULL | |
511 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
512 JVM_END | |
513 | |
514 | |
515 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
516 JVMWrapper("JVM_MonitorWait"); | |
517 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
518 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
519 if (JvmtiExport::should_post_monitor_wait()) { | |
520 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
521 } | |
522 ObjectSynchronizer::wait(obj, ms, CHECK); | |
523 JVM_END | |
524 | |
525 | |
526 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
527 JVMWrapper("JVM_MonitorNotify"); | |
528 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
529 ObjectSynchronizer::notify(obj, CHECK); | |
530 JVM_END | |
531 | |
532 | |
533 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
534 JVMWrapper("JVM_MonitorNotifyAll"); | |
535 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
536 ObjectSynchronizer::notifyall(obj, CHECK); | |
537 JVM_END | |
538 | |
539 | |
540 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
541 JVMWrapper("JVM_Clone"); | |
542 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
543 const KlassHandle klass (THREAD, obj->klass()); | |
544 JvmtiVMObjectAllocEventCollector oam; | |
545 | |
546 #ifdef ASSERT | |
547 // Just checking that the cloneable flag is set correct | |
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548 if (obj->is_array()) { |
0 | 549 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
550 } else { | |
551 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 552 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 553 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
554 } | |
555 #endif | |
556 | |
557 // Check if class of obj supports the Cloneable interface. | |
558 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
559 if (!klass->is_cloneable()) { | |
560 ResourceMark rm(THREAD); | |
561 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
562 } | |
563 | |
564 // Make shallow object copy | |
565 const int size = obj->size(); | |
566 oop new_obj = NULL; | |
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567 if (obj->is_array()) { |
0 | 568 const int length = ((arrayOop)obj())->length(); |
569 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
570 } else { | |
571 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
572 } | |
573 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
574 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
575 // be suspended in the middle of copying the pointer and end up with parts | |
576 // of two different pointers in the field. Subsequent dereferences will crash. | |
577 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
578 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
579 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
580 // The same is true of StubRoutines::object_copy and the various oop_copy | |
581 // variants, and of the code generated by the inline_native_clone intrinsic. | |
582 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
583 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
584 (size_t)align_object_size(size) / HeapWordsPerLong); | |
585 // Clear the header | |
586 new_obj->init_mark(); | |
587 | |
588 // Store check (mark entire object and let gc sort it out) | |
589 BarrierSet* bs = Universe::heap()->barrier_set(); | |
590 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
591 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
592 | |
593 // Caution: this involves a java upcall, so the clone should be | |
594 // "gc-robust" by this stage. | |
595 if (klass->has_finalizer()) { | |
596 assert(obj->is_instance(), "should be instanceOop"); | |
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597 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 598 } |
599 | |
600 return JNIHandles::make_local(env, oop(new_obj)); | |
601 JVM_END | |
602 | |
603 // java.lang.Compiler //////////////////////////////////////////////////// | |
604 | |
605 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
606 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
607 // functions are all silently ignored unless JVM warnings are printed. | |
608 | |
609 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
610 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
611 JVM_END | |
612 | |
613 | |
614 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
615 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
616 return JNI_FALSE; | |
617 JVM_END | |
618 | |
619 | |
620 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
621 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
622 return JNI_FALSE; | |
623 JVM_END | |
624 | |
625 | |
626 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
627 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
628 return JNI_FALSE; | |
629 JVM_END | |
630 | |
631 | |
632 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
633 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
634 return NULL; | |
635 JVM_END | |
636 | |
637 | |
638 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
639 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
640 JVM_END | |
641 | |
642 | |
643 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
644 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
645 JVM_END | |
646 | |
647 | |
648 | |
649 // Error message support ////////////////////////////////////////////////////// | |
650 | |
651 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
652 JVMWrapper("JVM_GetLastErrorString"); | |
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653 return (jint)os::lasterror(buf, len); |
0 | 654 JVM_END |
655 | |
656 | |
657 // java.io.File /////////////////////////////////////////////////////////////// | |
658 | |
659 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
660 JVMWrapper2("JVM_NativePath (%s)", path); | |
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661 return os::native_path(path); |
0 | 662 JVM_END |
663 | |
664 | |
665 // Misc. class handling /////////////////////////////////////////////////////////// | |
666 | |
667 | |
668 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
669 JVMWrapper("JVM_GetCallerClass"); | |
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670 |
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671 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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672 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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673 Klass* k = thread->security_get_caller_class(depth); |
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674 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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675 } else { |
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676 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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677 assert(depth == -1, "wrong handshake depth"); |
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678 } |
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679 |
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680 // Getting the class of the caller frame. |
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681 // |
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682 // The call stack at this point looks something like this: |
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683 // |
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684 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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685 // [1] [ @CallerSensitive API.method ] |
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686 // [.] [ (skipped intermediate frames) ] |
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687 // [n] [ caller ] |
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688 vframeStream vfst(thread); |
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689 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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690 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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691 Method* m = vfst.method(); |
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692 assert(m != NULL, "sanity"); |
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693 switch (n) { |
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694 case 0: |
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695 // This must only be called from Reflection.getCallerClass |
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696 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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697 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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698 } |
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699 // fall-through |
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700 case 1: |
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701 // Frame 0 and 1 must be caller sensitive. |
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702 if (!m->caller_sensitive()) { |
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703 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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704 } |
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705 break; |
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706 default: |
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707 if (!m->is_ignored_by_security_stack_walk()) { |
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708 // We have reached the desired frame; return the holder class. |
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709 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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710 } |
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711 break; |
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712 } |
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713 } |
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714 return NULL; |
0 | 715 JVM_END |
716 | |
717 | |
718 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
719 JVMWrapper("JVM_FindPrimitiveClass"); | |
720 oop mirror = NULL; | |
721 BasicType t = name2type(utf); | |
722 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
723 mirror = Universe::java_mirror(t); | |
724 } | |
725 if (mirror == NULL) { | |
726 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
727 } else { | |
728 return (jclass) JNIHandles::make_local(env, mirror); | |
729 } | |
730 JVM_END | |
731 | |
732 | |
733 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
734 JVMWrapper("JVM_ResolveClass"); | |
735 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
736 JVM_END | |
737 | |
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738 |
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739 // Returns a class loaded by the bootstrap class loader; or null |
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740 // if not found. ClassNotFoundException is not thrown. |
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741 // |
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742 // Rationale behind JVM_FindClassFromBootLoader |
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743 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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744 // b> because of (a) java.dll has a direct dependecy on the unexported |
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745 // private symbol "_JVM_FindClassFromClassLoader@20". |
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746 // c> the launcher cannot use the private symbol as it dynamically opens |
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747 // the entry point, so if something changes, the launcher will fail |
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748 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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749 // stable exported interface. |
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750 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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751 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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752 // JVM_FindClassFromClassLoader and will not be backward compatible |
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753 // with older JDKs. |
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754 // Thus a public/stable exported entry point is the right solution, |
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755 // public here means public in linker semantics, and is exported only |
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756 // to the JDK, and is not intended to be a public API. |
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757 |
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758 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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759 const char* name)) |
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760 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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761 |
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762 // Java libraries should ensure that name is never null... |
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763 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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764 // It's impossible to create this class; the name cannot fit |
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765 // into the constant pool. |
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766 return NULL; |
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767 } |
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768 |
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769 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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770 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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771 if (k == NULL) { |
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772 return NULL; |
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773 } |
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774 |
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775 if (TraceClassResolution) { |
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776 trace_class_resolution(k); |
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777 } |
6983 | 778 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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779 JVM_END |
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780 |
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781 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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782 jboolean init, jobject loader, |
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783 jboolean throwError)) |
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784 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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785 throwError ? "error" : "exception"); |
388 | 786 // Java libraries should ensure that name is never null... |
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787 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 788 // It's impossible to create this class; the name cannot fit |
789 // into the constant pool. | |
790 if (throwError) { | |
791 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
792 } else { | |
793 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
794 } | |
795 } | |
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796 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 797 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
798 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
799 Handle(), throwError, THREAD); | |
800 | |
801 if (TraceClassResolution && result != NULL) { | |
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802 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 803 } |
804 return result; | |
0 | 805 JVM_END |
806 | |
807 | |
808 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
809 jboolean init, jclass from)) | |
810 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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811 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 812 // It's impossible to create this class; the name cannot fit |
813 // into the constant pool. | |
814 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
815 } | |
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816 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 817 oop from_class_oop = JNIHandles::resolve(from); |
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818 Klass* from_class = (from_class_oop == NULL) |
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819 ? (Klass*)NULL |
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820 : java_lang_Class::as_Klass(from_class_oop); |
0 | 821 oop class_loader = NULL; |
822 oop protection_domain = NULL; | |
823 if (from_class != NULL) { | |
6983 | 824 class_loader = from_class->class_loader(); |
825 protection_domain = from_class->protection_domain(); | |
0 | 826 } |
827 Handle h_loader(THREAD, class_loader); | |
828 Handle h_prot (THREAD, protection_domain); | |
829 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
830 h_prot, true, thread); | |
831 | |
832 if (TraceClassResolution && result != NULL) { | |
833 // this function is generally only used for class loading during verification. | |
834 ResourceMark rm; | |
835 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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836 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 837 const char * from_name = from_class->external_name(); |
0 | 838 |
839 oop mirror = JNIHandles::resolve_non_null(result); | |
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840 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 841 const char * to = to_class->external_name(); |
0 | 842 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
843 } | |
844 | |
845 return result; | |
846 JVM_END | |
847 | |
848 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
849 if (loader.is_null()) { | |
850 return; | |
851 } | |
852 | |
853 // check whether the current caller thread holds the lock or not. | |
854 // If not, increment the corresponding counter | |
855 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
856 ObjectSynchronizer::owner_self) { | |
857 counter->inc(); | |
858 } | |
859 } | |
860 | |
861 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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862 // and JVM_DefineClassWithSourceCond() |
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863 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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864 jobject loader, const jbyte *buf, |
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865 jsize len, jobject pd, const char *source, |
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866 jboolean verify, TRAPS) { |
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867 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 868 |
875
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869 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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870 JavaThread* jt = (JavaThread*) THREAD; |
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871 |
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872 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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873 ClassLoader::perf_define_appclass_selftime(), |
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874 ClassLoader::perf_define_appclasses(), |
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875 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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876 jt->get_thread_stat()->perf_timers_addr(), |
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877 PerfClassTraceTime::DEFINE_CLASS); |
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878 |
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879 if (UsePerfData) { |
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880 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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881 } |
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882 |
0 | 883 // Since exceptions can be thrown, class initialization can take place |
884 // if name is NULL no check for class name in .class stream has to be made. | |
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885 TempNewSymbol class_name = NULL; |
0 | 886 if (name != NULL) { |
887 const int str_len = (int)strlen(name); | |
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888 if (str_len > Symbol::max_length()) { |
0 | 889 // It's impossible to create this class; the name cannot fit |
890 // into the constant pool. | |
891 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
892 } | |
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893 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 894 } |
895 | |
896 ResourceMark rm(THREAD); | |
897 ClassFileStream st((u1*) buf, len, (char *)source); | |
898 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
899 if (UsePerfData) { | |
900 is_lock_held_by_thread(class_loader, | |
901 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
902 THREAD); | |
903 } | |
904 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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905 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 906 protection_domain, &st, |
973
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907 verify != 0, |
0 | 908 CHECK_NULL); |
909 | |
910 if (TraceClassResolution && k != NULL) { | |
911 trace_class_resolution(k); | |
912 } | |
913 | |
6983 | 914 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 915 } |
916 | |
917 | |
918 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
919 JVMWrapper2("JVM_DefineClass %s", name); | |
920 | |
973
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921 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 922 JVM_END |
923 | |
924 | |
925 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
926 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
927 | |
973
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928 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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929 JVM_END |
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930 |
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931 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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932 jobject loader, const jbyte *buf, |
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933 jsize len, jobject pd, |
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934 const char *source, jboolean verify)) |
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935 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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936 |
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937 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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938 JVM_END |
0 | 939 |
940 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
941 JVMWrapper("JVM_FindLoadedClass"); | |
942 ResourceMark rm(THREAD); | |
943 | |
944 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
945 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
946 | |
947 const char* str = java_lang_String::as_utf8_string(string()); | |
948 // Sanity check, don't expect null | |
949 if (str == NULL) return NULL; | |
950 | |
951 const int str_len = (int)strlen(str); | |
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952 if (str_len > Symbol::max_length()) { |
0 | 953 // It's impossible to create this class; the name cannot fit |
954 // into the constant pool. | |
955 return NULL; | |
956 } | |
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957 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 958 |
959 // Security Note: | |
960 // The Java level wrapper will perform the necessary security check allowing | |
961 // us to pass the NULL as the initiating class loader. | |
962 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
963 if (UsePerfData) { | |
964 is_lock_held_by_thread(h_loader, | |
965 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
966 THREAD); | |
967 } | |
968 | |
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969 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 970 h_loader, |
971 Handle(), | |
972 CHECK_NULL); | |
973 | |
974 return (k == NULL) ? NULL : | |
6983 | 975 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 976 JVM_END |
977 | |
978 | |
979 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
980 | |
981 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
982 assert (cls != NULL, "illegal class"); | |
983 JVMWrapper("JVM_GetClassName"); | |
984 JvmtiVMObjectAllocEventCollector oam; | |
985 ResourceMark rm(THREAD); | |
986 const char* name; | |
987 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
988 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
989 } else { | |
990 // Consider caching interned string in Klass | |
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991 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 992 assert(k->is_klass(), "just checking"); |
6983 | 993 name = k->external_name(); |
0 | 994 } |
995 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
996 return (jstring) JNIHandles::make_local(env, result); | |
997 JVM_END | |
998 | |
999 | |
1000 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1001 JVMWrapper("JVM_GetClassInterfaces"); | |
1002 JvmtiVMObjectAllocEventCollector oam; | |
1003 oop mirror = JNIHandles::resolve_non_null(cls); | |
1004 | |
1005 // Special handling for primitive objects | |
1006 if (java_lang_Class::is_primitive(mirror)) { | |
1007 // Primitive objects does not have any interfaces | |
1142 | 1008 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1009 return (jobjectArray) JNIHandles::make_local(env, r); |
1010 } | |
1011 | |
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1012 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1013 // Figure size of result array |
1014 int size; | |
1015 if (klass->oop_is_instance()) { | |
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1016 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1017 } else { |
1018 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1019 size = 2; | |
1020 } | |
1021 | |
1022 // Allocate result array | |
1142 | 1023 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1024 objArrayHandle result (THREAD, r); |
1025 // Fill in result | |
1026 if (klass->oop_is_instance()) { | |
1027 // Regular instance klass, fill in all local interfaces | |
1028 for (int index = 0; index < size; index++) { | |
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1029 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1030 result->obj_at_put(index, k->java_mirror()); |
0 | 1031 } |
1032 } else { | |
1033 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1034 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1035 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1036 } |
1037 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1038 JVM_END | |
1039 | |
1040 | |
1041 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1042 JVMWrapper("JVM_GetClassLoader"); | |
1043 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1044 return NULL; | |
1045 } | |
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1046 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1047 oop loader = k->class_loader(); |
0 | 1048 return JNIHandles::make_local(env, loader); |
1049 JVM_END | |
1050 | |
1051 | |
1052 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1053 JVMWrapper("JVM_IsInterface"); | |
1054 oop mirror = JNIHandles::resolve_non_null(cls); | |
1055 if (java_lang_Class::is_primitive(mirror)) { | |
1056 return JNI_FALSE; | |
1057 } | |
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1058 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1059 jboolean result = k->is_interface(); |
1060 assert(!result || k->oop_is_instance(), | |
0 | 1061 "all interfaces are instance types"); |
1062 // The compiler intrinsic for isInterface tests the | |
1063 // Klass::_access_flags bits in the same way. | |
1064 return result; | |
1065 JVM_END | |
1066 | |
1067 | |
1068 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1069 JVMWrapper("JVM_GetClassSigners"); | |
1070 JvmtiVMObjectAllocEventCollector oam; | |
1071 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1072 // There are no signers for primitive types | |
1073 return NULL; | |
1074 } | |
1075 | |
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1076 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1077 |
1078 // If there are no signers set in the class, or if the class | |
1079 // is an array, return NULL. | |
1080 if (signers == NULL) return NULL; | |
1081 | |
1082 // copy of the signers array | |
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1083 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1084 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1085 for (int index = 0; index < signers->length(); index++) { | |
1086 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1087 } | |
1088 | |
1089 // return the copy | |
1090 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1091 JVM_END | |
1092 | |
1093 | |
1094 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1095 JVMWrapper("JVM_SetClassSigners"); | |
1096 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1097 // This call is ignored for primitive types and arrays. | |
1098 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1099 // be called with an array. Only the bootstrap loader creates arrays. | |
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1100 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1101 if (k->oop_is_instance()) { |
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1102 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1103 } |
1104 } | |
1105 JVM_END | |
1106 | |
1107 | |
1108 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1109 JVMWrapper("JVM_GetProtectionDomain"); | |
1110 if (JNIHandles::resolve(cls) == NULL) { | |
1111 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1112 } | |
1113 | |
1114 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1115 // Primitive types does not have a protection domain. | |
1116 return NULL; | |
1117 } | |
1118 | |
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1119 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1120 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1121 JVM_END |
1122 | |
1123 | |
1124 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1125 // still defined in core libraries as of 1.5. | |
1126 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1127 JVMWrapper("JVM_SetProtectionDomain"); | |
1128 if (JNIHandles::resolve(cls) == NULL) { | |
1129 THROW(vmSymbols::java_lang_NullPointerException()); | |
1130 } | |
1131 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1132 // Call is ignored for primitive types | |
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1133 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1134 |
1135 // cls won't be an array, as this called only from ClassLoader.defineClass | |
6983 | 1136 if (k->oop_is_instance()) { |
0 | 1137 oop pd = JNIHandles::resolve(protection_domain); |
1138 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1139 java_lang_Class::set_protection_domain(k->java_mirror(), pd); |
0 | 1140 } |
1141 } | |
1142 JVM_END | |
1143 | |
11010 | 1144 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1145 // If there is a security manager and protection domain, check the access | |
1146 // in the protection domain, otherwise it is authorized. | |
1147 if (java_lang_System::has_security_manager()) { | |
1148 | |
1149 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1150 // this context to revert to older behavior. | |
1151 // In this case the isAuthorized field in AccessControlContext is also not | |
1152 // present. | |
1153 if (Universe::protection_domain_implies_method() == NULL) { | |
1154 return true; | |
1155 } | |
1156 | |
1157 // Whitelist certain access control contexts | |
1158 if (java_security_AccessControlContext::is_authorized(context)) { | |
1159 return true; | |
1160 } | |
1161 | |
1162 oop prot = klass->protection_domain(); | |
1163 if (prot != NULL) { | |
1164 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1165 // in the new wrapper. | |
1166 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1167 Handle h_prot(THREAD, prot); | |
1168 JavaValue result(T_BOOLEAN); | |
1169 JavaCallArguments args(h_prot); | |
1170 JavaCalls::call(&result, m, &args, CHECK_false); | |
1171 return (result.get_jboolean() != 0); | |
1172 } | |
1173 } | |
1174 return true; | |
1175 } | |
1176 | |
1177 // Create an AccessControlContext with a protection domain with null codesource | |
1178 // and null permissions - which gives no permissions. | |
1179 oop create_dummy_access_control_context(TRAPS) { | |
1180 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1181 // new ProtectionDomain(null,null); | |
1182 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1183 Handle null_pd(THREAD, null_protection_domain); | |
1184 | |
1185 // new ProtectionDomain[] {pd}; | |
1186 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1187 context->obj_at_put(0, null_pd()); | |
1188 | |
1189 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1190 objArrayHandle h_context(THREAD, context); | |
1191 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1192 return result; | |
1193 } | |
0 | 1194 |
1195 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1196 JVMWrapper("JVM_DoPrivileged"); | |
1197 | |
1198 if (action == NULL) { | |
1199 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1200 } | |
1201 | |
11010 | 1202 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1203 vframeStream vfst(thread); | |
1204 vfst.security_get_caller_frame(1); | |
1205 | |
1206 if (vfst.at_end()) { | |
1207 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1208 } | |
1209 | |
1210 Method* method = vfst.method(); | |
1211 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1212 | |
1213 // Check that action object understands "Object run()" | |
1214 Handle h_context; | |
1215 if (context != NULL) { | |
1216 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1217 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1218 if (!authorized) { | |
1219 // Create an unprivileged access control object and call it's run function | |
1220 // instead. | |
1221 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1222 h_context = Handle(THREAD, noprivs); | |
1223 } | |
1224 } | |
0 | 1225 |
1226 // Check that action object understands "Object run()" | |
1227 Handle object (THREAD, JNIHandles::resolve(action)); | |
1228 | |
1229 // get run() method | |
6983 | 1230 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1231 vmSymbols::run_method_name(), |
1232 vmSymbols::void_object_signature()); | |
1233 methodHandle m (THREAD, m_oop); | |
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1234 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1235 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1236 } | |
1237 | |
11010 | 1238 // Stack allocated list of privileged stack elements |
1239 PrivilegedElement pi; | |
0 | 1240 if (!vfst.at_end()) { |
11010 | 1241 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1242 thread->set_privileged_stack_top(&pi); |
1243 } | |
1244 | |
1245 | |
1246 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1247 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1248 Handle pending_exception; | |
1249 JavaValue result(T_OBJECT); | |
1250 JavaCallArguments args(object); | |
1251 JavaCalls::call(&result, m, &args, THREAD); | |
1252 | |
1253 // done with action, remove ourselves from the list | |
1254 if (!vfst.at_end()) { | |
1255 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1256 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1257 } | |
1258 | |
1259 if (HAS_PENDING_EXCEPTION) { | |
1260 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1261 CLEAR_PENDING_EXCEPTION; | |
1262 | |
1142 | 1263 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1264 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1265 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1266 JavaCallArguments args(pending_exception); | |
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1267 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1268 vmSymbols::exception_void_signature(), |
0 | 1269 &args); |
1270 } | |
1271 } | |
1272 | |
1273 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1274 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1275 JVM_END | |
1276 | |
1277 | |
1278 // Returns the inherited_access_control_context field of the running thread. | |
1279 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1280 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1281 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1282 return JNIHandles::make_local(env, result); | |
1283 JVM_END | |
1284 | |
1285 class RegisterArrayForGC { | |
1286 private: | |
1287 JavaThread *_thread; | |
1288 public: | |
1289 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1290 _thread = thread; | |
1291 _thread->register_array_for_gc(array); | |
1292 } | |
1293 | |
1294 ~RegisterArrayForGC() { | |
1295 _thread->register_array_for_gc(NULL); | |
1296 } | |
1297 }; | |
1298 | |
1299 | |
1300 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1301 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1302 if (!UsePrivilegedStack) return NULL; | |
1303 | |
1304 ResourceMark rm(THREAD); | |
1305 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1306 JvmtiVMObjectAllocEventCollector oam; | |
1307 | |
1308 // count the protection domains on the execution stack. We collapse | |
1309 // duplicate consecutive protection domains into a single one, as | |
1310 // well as stopping when we hit a privileged frame. | |
1311 | |
1312 // Use vframeStream to iterate through Java frames | |
1313 vframeStream vfst(thread); | |
1314 | |
1315 oop previous_protection_domain = NULL; | |
1316 Handle privileged_context(thread, NULL); | |
1317 bool is_privileged = false; | |
1318 oop protection_domain = NULL; | |
1319 | |
1320 for(; !vfst.at_end(); vfst.next()) { | |
1321 // get method of frame | |
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1322 Method* method = vfst.method(); |
0 | 1323 intptr_t* frame_id = vfst.frame_id(); |
1324 | |
1325 // check the privileged frames to see if we have a match | |
1326 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1327 // this frame is privileged | |
1328 is_privileged = true; | |
1329 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1330 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1331 } else { | |
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1332 protection_domain = method->method_holder()->protection_domain(); |
0 | 1333 } |
1334 | |
1335 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1336 local_array->push(protection_domain); | |
1337 previous_protection_domain = protection_domain; | |
1338 } | |
1339 | |
1340 if (is_privileged) break; | |
1341 } | |
1342 | |
1343 | |
1344 // either all the domains on the stack were system domains, or | |
1345 // we had a privileged system domain | |
1346 if (local_array->is_empty()) { | |
1347 if (is_privileged && privileged_context.is_null()) return NULL; | |
1348 | |
1349 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1350 return JNIHandles::make_local(env, result); | |
1351 } | |
1352 | |
1353 // the resource area must be registered in case of a gc | |
1354 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1355 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1356 local_array->length(), CHECK_NULL); |
1357 objArrayHandle h_context(thread, context); | |
1358 for (int index = 0; index < local_array->length(); index++) { | |
1359 h_context->obj_at_put(index, local_array->at(index)); | |
1360 } | |
1361 | |
1362 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1363 | |
1364 return JNIHandles::make_local(env, result); | |
1365 JVM_END | |
1366 | |
1367 | |
1368 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1369 JVMWrapper("JVM_IsArrayClass"); | |
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1370 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1371 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1372 JVM_END |
1373 | |
1374 | |
1375 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1376 JVMWrapper("JVM_IsPrimitiveClass"); | |
1377 oop mirror = JNIHandles::resolve_non_null(cls); | |
1378 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1379 JVM_END | |
1380 | |
1381 | |
1382 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1383 JVMWrapper("JVM_GetComponentType"); | |
1384 oop mirror = JNIHandles::resolve_non_null(cls); | |
1385 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1386 return (jclass) JNIHandles::make_local(env, result); | |
1387 JVM_END | |
1388 | |
1389 | |
1390 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1391 JVMWrapper("JVM_GetClassModifiers"); | |
1392 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1393 // Primitive type | |
1394 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1395 } | |
1396 | |
6983 | 1397 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1398 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1399 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1400 return k->modifier_flags(); | |
1401 JVM_END | |
1402 | |
1403 | |
1404 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1405 | |
1406 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1407 JvmtiVMObjectAllocEventCollector oam; | |
1408 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1409 // of an InstanceKlass |
0 | 1410 |
1411 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1412 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1413 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1414 return (jobjectArray)JNIHandles::make_local(env, result); |
1415 } | |
1416 | |
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1417 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1418 InnerClassesIterator iter(k); |
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1419 |
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1420 if (iter.length() == 0) { |
0 | 1421 // Neither an inner nor outer class |
1142 | 1422 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1423 return (jobjectArray)JNIHandles::make_local(env, result); |
1424 } | |
1425 | |
1426 // find inner class info | |
1427 constantPoolHandle cp(thread, k->constants()); | |
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1428 int length = iter.length(); |
0 | 1429 |
1430 // Allocate temp. result array | |
1142 | 1431 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1432 objArrayHandle result (THREAD, r); |
1433 int members = 0; | |
1434 | |
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1435 for (; !iter.done(); iter.next()) { |
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1436 int ioff = iter.inner_class_info_index(); |
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1437 int ooff = iter.outer_class_info_index(); |
0 | 1438 |
1439 if (ioff != 0 && ooff != 0) { | |
1440 // Check to see if the name matches the class we're looking for | |
1441 // before attempting to find the class. | |
1442 if (cp->klass_name_at_matches(k, ooff)) { | |
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1443 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1444 if (outer_klass == k()) { |
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1445 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1446 instanceKlassHandle inner_klass (THREAD, ik); |
1447 | |
1448 // Throws an exception if outer klass has not declared k as | |
1449 // an inner klass | |
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1450 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1451 |
1452 result->obj_at_put(members, inner_klass->java_mirror()); | |
1453 members++; | |
1454 } | |
1455 } | |
1456 } | |
1457 } | |
1458 | |
1459 if (members != length) { | |
1460 // Return array of right length | |
1142 | 1461 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1462 for(int i = 0; i < members; i++) { |
1463 res->obj_at_put(i, result->obj_at(i)); | |
1464 } | |
1465 return (jobjectArray)JNIHandles::make_local(env, res); | |
1466 } | |
1467 | |
1468 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1469 JVM_END | |
1470 | |
1471 | |
1472 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1473 { |
0 | 1474 // ofClass is a reference to a java_lang_Class object. |
1475 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1476 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1477 return NULL; |
1478 } | |
1479 | |
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1480 bool inner_is_member = false; |
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1481 Klass* outer_klass |
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1482 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1483 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1484 if (outer_klass == NULL) return NULL; // already a top-level class |
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1485 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1486 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1487 } |
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1488 JVM_END |
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1489 |
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1490 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1491 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1492 bool* inner_is_member, |
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1493 TRAPS) { |
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1494 Thread* thread = THREAD; |
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1495 InnerClassesIterator iter(k); |
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1496 if (iter.length() == 0) { |
0 | 1497 // No inner class info => no declaring class |
1498 return NULL; | |
1499 } | |
1500 | |
1501 constantPoolHandle i_cp(thread, k->constants()); | |
1502 | |
1503 bool found = false; | |
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1504 Klass* ok; |
0 | 1505 instanceKlassHandle outer_klass; |
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1506 *inner_is_member = false; |
0 | 1507 |
1508 // Find inner_klass attribute | |
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1509 for (; !iter.done() && !found; iter.next()) { |
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1510 int ioff = iter.inner_class_info_index(); |
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1511 int ooff = iter.outer_class_info_index(); |
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1512 int noff = iter.inner_name_index(); |
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1513 if (ioff != 0) { |
0 | 1514 // Check to see if the name matches the class we're looking for |
1515 // before attempting to find the class. | |
1516 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1517 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1518 found = (k() == inner_klass); |
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1519 if (found && ooff != 0) { |
0 | 1520 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1521 outer_klass = instanceKlassHandle(thread, ok); | |
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1522 *inner_is_member = true; |
0 | 1523 } |
1524 } | |
1525 } | |
1526 } | |
1527 | |
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1528 if (found && outer_klass.is_null()) { |
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1529 // It may be anonymous; try for that. |
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1530 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1531 if (encl_method_class_idx != 0) { |
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1532 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1533 outer_klass = instanceKlassHandle(thread, ok); |
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1534 *inner_is_member = false; |
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1535 } |
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1536 } |
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1537 |
0 | 1538 // If no inner class attribute found for this class. |
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1539 if (outer_klass.is_null()) return NULL; |
0 | 1540 |
1541 // Throws an exception if outer klass has not declared k as an inner klass | |
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1542 // We need evidence that each klass knows about the other, or else |
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1543 // the system could allow a spoof of an inner class to gain access rights. |
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1544 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1545 return outer_klass(); |
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1546 } |
0 | 1547 |
1548 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1549 assert (cls != NULL, "illegal class"); | |
1550 JVMWrapper("JVM_GetClassSignature"); | |
1551 JvmtiVMObjectAllocEventCollector oam; | |
1552 ResourceMark rm(THREAD); | |
1553 // Return null for arrays and primatives | |
1554 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1555 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1556 if (k->oop_is_instance()) { |
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1557 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1558 if (sym == NULL) return NULL; |
0 | 1559 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1560 return (jstring) JNIHandles::make_local(env, str()); | |
1561 } | |
1562 } | |
1563 return NULL; | |
1564 JVM_END | |
1565 | |
1566 | |
1567 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1568 assert (cls != NULL, "illegal class"); | |
1569 JVMWrapper("JVM_GetClassAnnotations"); | |
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1570 |
0 | 1571 // Return null for arrays and primitives |
1572 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1573 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1574 if (k->oop_is_instance()) { |
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1575 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1576 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1577 } |
1578 } | |
1579 return NULL; | |
1580 JVM_END | |
1581 | |
1582 | |
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1583 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1584 // some of this code was adapted from from jni_FromReflectedField |
1585 | |
1586 oop reflected = JNIHandles::resolve_non_null(field); | |
1587 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1588 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1589 int slot = java_lang_reflect_Field::slot(reflected); |
1590 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1591 | |
1592 KlassHandle kh(THREAD, k); | |
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1593 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1594 |
1595 if (modifiers & JVM_ACC_STATIC) { | |
1596 // for static fields we only look in the current class | |
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1597 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1598 assert(false, "cannot find static field"); |
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1599 return false; |
0 | 1600 } |
1601 } else { | |
1602 // for instance fields we start with the current class and work | |
1603 // our way up through the superclass chain | |
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1604 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1605 assert(false, "cannot find instance field"); |
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1606 return false; |
0 | 1607 } |
1608 } | |
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1609 return true; |
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1610 } |
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1611 |
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1612 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1613 // field is a handle to a java.lang.reflect.Field object |
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1614 assert(field != NULL, "illegal field"); |
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1615 JVMWrapper("JVM_GetFieldAnnotations"); |
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1616 |
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|
1617 fieldDescriptor fd; |
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1618 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1619 if (!gotFd) { |
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|
1620 return NULL; |
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|
1621 } |
0 | 1622 |
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1623 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1624 JVM_END |
1625 | |
1626 | |
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1627 static Method* jvm_get_method_common(jobject method) { |
0 | 1628 // some of this code was adapted from from jni_FromReflectedMethod |
1629 | |
1630 oop reflected = JNIHandles::resolve_non_null(method); | |
1631 oop mirror = NULL; | |
1632 int slot = 0; | |
1633 | |
1142 | 1634 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1635 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1636 slot = java_lang_reflect_Constructor::slot(reflected); | |
1637 } else { | |
1142 | 1638 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1639 "wrong type"); |
1640 mirror = java_lang_reflect_Method::clazz(reflected); | |
1641 slot = java_lang_reflect_Method::slot(reflected); | |
1642 } | |
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1643 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1644 |
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1645 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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1646 assert(m != NULL, "cannot find method"); |
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1647 return m; // caller has to deal with NULL in product mode |
0 | 1648 } |
1649 | |
1650 | |
1651 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1652 JVMWrapper("JVM_GetMethodAnnotations"); | |
1653 | |
1654 // method is a handle to a java.lang.reflect.Method object | |
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1655 Method* m = jvm_get_method_common(method); |
8818
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1656 if (m == NULL) { |
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1657 return NULL; |
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|
1658 } |
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1659 |
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1660 return (jbyteArray) JNIHandles::make_local(env, |
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1661 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1662 JVM_END |
1663 | |
1664 | |
1665 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1666 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1667 | |
1668 // method is a handle to a java.lang.reflect.Method object | |
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1669 Method* m = jvm_get_method_common(method); |
8818
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1670 if (m == NULL) { |
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|
1671 return NULL; |
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|
1672 } |
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|
1673 |
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1674 return (jbyteArray) JNIHandles::make_local(env, |
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1675 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1676 JVM_END |
1677 | |
1678 | |
1679 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1680 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1681 | |
1682 // method is a handle to a java.lang.reflect.Method object | |
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1683 Method* m = jvm_get_method_common(method); |
8818
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1684 if (m == NULL) { |
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|
1685 return NULL; |
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|
1686 } |
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|
1687 |
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1688 return (jbyteArray) JNIHandles::make_local(env, |
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1689 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1690 JVM_END |
1691 | |
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1692 /* Type use annotations support (JDK 1.8) */ |
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1693 |
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1694 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1695 assert (cls != NULL, "illegal class"); |
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|
1696 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1697 ResourceMark rm(THREAD); |
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|
1698 // Return null for arrays and primitives |
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1699 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1700 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1701 if (k->oop_is_instance()) { |
8031 | 1702 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1703 if (type_annotations != NULL) { |
8031 | 1704 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1705 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1706 } |
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1707 } |
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|
1708 } |
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|
1709 return NULL; |
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|
1710 JVM_END |
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1711 |
8818
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1712 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1713 assert (method != NULL, "illegal method"); |
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|
1714 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1715 |
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1716 // method is a handle to a java.lang.reflect.Method object |
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1717 Method* m = jvm_get_method_common(method); |
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1718 if (m == NULL) { |
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|
1719 return NULL; |
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|
1720 } |
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|
1721 |
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|
1722 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1723 if (type_annotations != NULL) { |
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1724 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1725 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1726 } |
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|
1727 |
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|
1728 return NULL; |
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|
1729 JVM_END |
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|
1730 |
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|
1731 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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|
1732 assert (field != NULL, "illegal field"); |
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|
1733 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1734 |
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|
1735 fieldDescriptor fd; |
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|
1736 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1737 if (!gotFd) { |
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|
1738 return NULL; |
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|
1739 } |
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|
1740 |
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1741 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1742 JVM_END |
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1743 |
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1744 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1745 if (!cp->is_within_bounds(index)) { |
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1746 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1747 } |
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1748 } |
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1749 |
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1750 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1751 { |
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|
1752 JVMWrapper("JVM_GetMethodParameters"); |
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1753 // method is a handle to a java.lang.reflect.Method object |
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1754 Method* method_ptr = jvm_get_method_common(method); |
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1755 methodHandle mh (THREAD, method_ptr); |
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|
1756 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1757 const int num_params = mh->method_parameters_length(); |
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1758 |
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1759 if (0 != num_params) { |
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1760 // make sure all the symbols are properly formatted |
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1761 for (int i = 0; i < num_params; i++) { |
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1762 MethodParametersElement* params = mh->method_parameters_start(); |
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1763 int index = params[i].name_cp_index; |
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|
1764 bounds_check(mh->constants(), index, CHECK_NULL); |
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1765 |
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|
1766 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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|
1767 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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|
1768 "Wrong type at constant pool index"); |
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|
1769 } |
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|
1770 |
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1771 } |
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1772 |
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1773 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1774 objArrayHandle result (THREAD, result_oop); |
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1775 |
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1776 for (int i = 0; i < num_params; i++) { |
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1777 MethodParametersElement* params = mh->method_parameters_start(); |
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1778 // For a 0 index, give a NULL symbol |
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1779 Symbol* sym = 0 != params[i].name_cp_index ? |
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1780 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1781 int flags = params[i].flags; |
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1782 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1783 flags, CHECK_NULL); |
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1784 result->obj_at_put(i, param); |
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1785 } |
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1786 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1787 } else { |
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1788 return (jobjectArray)NULL; |
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1789 } |
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1790 } |
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1791 JVM_END |
0 | 1792 |
1793 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1794 | |
1795 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1796 { | |
1797 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1798 JvmtiVMObjectAllocEventCollector oam; | |
1799 | |
1800 // Exclude primitive types and array types | |
1801 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1802 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1803 // Return empty array |
1142 | 1804 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1805 return (jobjectArray) JNIHandles::make_local(env, res); |
1806 } | |
1807 | |
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1808 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1809 constantPoolHandle cp(THREAD, k->constants()); |
1810 | |
1811 // Ensure class is linked | |
1812 k->link_class(CHECK_NULL); | |
1813 | |
1814 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1815 bool skip_backtrace = false; | |
1816 | |
1817 // Allocate result | |
1818 int num_fields; | |
1819 | |
1820 if (publicOnly) { | |
1821 num_fields = 0; | |
3938 | 1822 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1823 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1824 } |
1825 } else { | |
3938 | 1826 num_fields = k->java_fields_count(); |
0 | 1827 |
1142 | 1828 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1829 num_fields--; |
1830 skip_backtrace = true; | |
1831 } | |
1832 } | |
1833 | |
1142 | 1834 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1835 objArrayHandle result (THREAD, r); |
1836 | |
1837 int out_idx = 0; | |
1838 fieldDescriptor fd; | |
3938 | 1839 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1840 if (skip_backtrace) { |
1841 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1842 int offset = fs.offset(); |
0 | 1843 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1844 } | |
1845 | |
3938 | 1846 if (!publicOnly || fs.access_flags().is_public()) { |
1847 fd.initialize(k(), fs.index()); | |
0 | 1848 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1849 result->obj_at_put(out_idx, field); | |
1850 ++out_idx; | |
1851 } | |
1852 } | |
1853 assert(out_idx == num_fields, "just checking"); | |
1854 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1855 } | |
1856 JVM_END | |
1857 | |
1858 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1859 { | |
1860 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1861 JvmtiVMObjectAllocEventCollector oam; | |
1862 | |
1863 // Exclude primitive types and array types | |
1864 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1865 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1866 // Return empty array |
1142 | 1867 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1868 return (jobjectArray) JNIHandles::make_local(env, res); |
1869 } | |
1870 | |
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1871 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1872 |
1873 // Ensure class is linked | |
1874 k->link_class(CHECK_NULL); | |
1875 | |
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1876 Array<Method*>* methods = k->methods(); |
0 | 1877 int methods_length = methods->length(); |
1878 int num_methods = 0; | |
1879 | |
1880 int i; | |
1881 for (i = 0; i < methods_length; i++) { | |
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1882 methodHandle method(THREAD, methods->at(i)); |
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1883 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1884 if (!publicOnly || method->is_public()) { |
1885 ++num_methods; | |
1886 } | |
1887 } | |
1888 } | |
1889 | |
1890 // Allocate result | |
1142 | 1891 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1892 objArrayHandle result (THREAD, r); |
1893 | |
1894 int out_idx = 0; | |
1895 for (i = 0; i < methods_length; i++) { | |
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1896 methodHandle method(THREAD, methods->at(i)); |
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1897 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1898 if (!publicOnly || method->is_public()) { |
1899 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1900 result->obj_at_put(out_idx, m); | |
1901 ++out_idx; | |
1902 } | |
1903 } | |
1904 } | |
1905 assert(out_idx == num_methods, "just checking"); | |
1906 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1907 } | |
1908 JVM_END | |
1909 | |
1910 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1911 { | |
1912 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1913 JvmtiVMObjectAllocEventCollector oam; | |
1914 | |
1915 // Exclude primitive types and array types | |
1916 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1917 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1918 // Return empty array |
1142 | 1919 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1920 return (jobjectArray) JNIHandles::make_local(env, res); |
1921 } | |
1922 | |
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1923 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1924 |
1925 // Ensure class is linked | |
1926 k->link_class(CHECK_NULL); | |
1927 | |
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1928 Array<Method*>* methods = k->methods(); |
0 | 1929 int methods_length = methods->length(); |
1930 int num_constructors = 0; | |
1931 | |
1932 int i; | |
1933 for (i = 0; i < methods_length; i++) { | |
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1934 methodHandle method(THREAD, methods->at(i)); |
0 | 1935 if (method->is_initializer() && !method->is_static()) { |
1936 if (!publicOnly || method->is_public()) { | |
1937 ++num_constructors; | |
1938 } | |
1939 } | |
1940 } | |
1941 | |
1942 // Allocate result | |
1142 | 1943 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1944 objArrayHandle result(THREAD, r); |
1945 | |
1946 int out_idx = 0; | |
1947 for (i = 0; i < methods_length; i++) { | |
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1948 methodHandle method(THREAD, methods->at(i)); |
0 | 1949 if (method->is_initializer() && !method->is_static()) { |
1950 if (!publicOnly || method->is_public()) { | |
1951 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1952 result->obj_at_put(out_idx, m); | |
1953 ++out_idx; | |
1954 } | |
1955 } | |
1956 } | |
1957 assert(out_idx == num_constructors, "just checking"); | |
1958 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1959 } | |
1960 JVM_END | |
1961 | |
1962 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1963 { | |
1964 JVMWrapper("JVM_GetClassAccessFlags"); | |
1965 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1966 // Primitive type | |
1967 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1968 } | |
1969 | |
6983 | 1970 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1971 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1972 } | |
1973 JVM_END | |
1974 | |
1975 | |
1976 // Constant pool access ////////////////////////////////////////////////////////// | |
1977 | |
1978 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1979 { | |
1980 JVMWrapper("JVM_GetClassConstantPool"); | |
1981 JvmtiVMObjectAllocEventCollector oam; | |
1982 | |
1983 // Return null for primitives and arrays | |
1984 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1985 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1986 if (k->oop_is_instance()) { |
0 | 1987 instanceKlassHandle k_h(THREAD, k); |
1988 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1989 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1990 return JNIHandles::make_local(jcp()); |
1991 } | |
1992 } | |
1993 return NULL; | |
1994 } | |
1995 JVM_END | |
1996 | |
1997 | |
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1998 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1999 { |
2000 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2001 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2002 return cp->length(); |
2003 } | |
2004 JVM_END | |
2005 | |
2006 | |
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2007 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2008 { |
2009 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2010 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2011 bounds_check(cp, index, CHECK_NULL); |
2012 constantTag tag = cp->tag_at(index); | |
2013 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2014 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2015 } | |
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2016 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2017 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2018 } |
2019 JVM_END | |
2020 | |
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2021 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2022 { |
2023 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2024 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2025 bounds_check(cp, index, CHECK_NULL); |
2026 constantTag tag = cp->tag_at(index); | |
2027 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2028 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2029 } | |
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2030 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2031 if (k == NULL) return NULL; |
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2032 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2033 } |
2034 JVM_END | |
2035 | |
2036 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2037 constantTag tag = cp->tag_at(index); | |
2038 if (!tag.is_method() && !tag.is_interface_method()) { | |
2039 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2040 } | |
2041 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2042 Klass* k_o; |
0 | 2043 if (force_resolution) { |
2044 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2045 } else { | |
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2046 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2047 if (k_o == NULL) return NULL; |
2048 } | |
2049 instanceKlassHandle k(THREAD, k_o); | |
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2050 Symbol* name = cp->uncached_name_ref_at(index); |
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2051 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2052 methodHandle m (THREAD, k->find_method(name, sig)); |
2053 if (m.is_null()) { | |
2054 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2055 } | |
2056 oop method; | |
2057 if (!m->is_initializer() || m->is_static()) { | |
2058 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2059 } else { | |
2060 method = Reflection::new_constructor(m, CHECK_NULL); | |
2061 } | |
2062 return JNIHandles::make_local(method); | |
2063 } | |
2064 | |
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2065 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2066 { |
2067 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2068 JvmtiVMObjectAllocEventCollector oam; | |
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2069 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2070 bounds_check(cp, index, CHECK_NULL); |
2071 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2072 return res; | |
2073 } | |
2074 JVM_END | |
2075 | |
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2076 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2077 { |
2078 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2079 JvmtiVMObjectAllocEventCollector oam; | |
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2080 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2081 bounds_check(cp, index, CHECK_NULL); |
2082 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2083 return res; | |
2084 } | |
2085 JVM_END | |
2086 | |
2087 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2088 constantTag tag = cp->tag_at(index); | |
2089 if (!tag.is_field()) { | |
2090 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2091 } | |
2092 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2093 Klass* k_o; |
0 | 2094 if (force_resolution) { |
2095 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2096 } else { | |
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2097 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2098 if (k_o == NULL) return NULL; |
2099 } | |
2100 instanceKlassHandle k(THREAD, k_o); | |
2177
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2101 Symbol* name = cp->uncached_name_ref_at(index); |
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2102 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2103 fieldDescriptor fd; |
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2104 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2105 if (target_klass == NULL) { |
2106 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2107 } | |
2108 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2109 return JNIHandles::make_local(field); | |
2110 } | |
2111 | |
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2112 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2113 { |
2114 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2115 JvmtiVMObjectAllocEventCollector oam; | |
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2116 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2117 bounds_check(cp, index, CHECK_NULL); |
2118 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2119 return res; | |
2120 } | |
2121 JVM_END | |
2122 | |
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2123 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2124 { |
2125 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2126 JvmtiVMObjectAllocEventCollector oam; | |
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2127 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2128 bounds_check(cp, index, CHECK_NULL); |
2129 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2130 return res; | |
2131 } | |
2132 JVM_END | |
2133 | |
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2134 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2135 { |
2136 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2137 JvmtiVMObjectAllocEventCollector oam; | |
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2138 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2139 bounds_check(cp, index, CHECK_NULL); |
2140 constantTag tag = cp->tag_at(index); | |
2141 if (!tag.is_field_or_method()) { | |
2142 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2143 } | |
2144 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2145 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2146 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2147 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2148 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2149 objArrayHandle dest(THREAD, dest_o); |
2150 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2151 dest->obj_at_put(0, str()); | |
2152 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2153 dest->obj_at_put(1, str()); | |
2154 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2155 dest->obj_at_put(2, str()); | |
2156 return (jobjectArray) JNIHandles::make_local(dest()); | |
2157 } | |
2158 JVM_END | |
2159 | |
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2160 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2161 { |
2162 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2163 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2164 bounds_check(cp, index, CHECK_0); |
2165 constantTag tag = cp->tag_at(index); | |
2166 if (!tag.is_int()) { | |
2167 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2168 } | |
2169 return cp->int_at(index); | |
2170 } | |
2171 JVM_END | |
2172 | |
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2173 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2174 { |
2175 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2176 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2177 bounds_check(cp, index, CHECK_(0L)); |
2178 constantTag tag = cp->tag_at(index); | |
2179 if (!tag.is_long()) { | |
2180 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2181 } | |
2182 return cp->long_at(index); | |
2183 } | |
2184 JVM_END | |
2185 | |
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2186 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2187 { |
2188 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2189 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2190 bounds_check(cp, index, CHECK_(0.0f)); |
2191 constantTag tag = cp->tag_at(index); | |
2192 if (!tag.is_float()) { | |
2193 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2194 } | |
2195 return cp->float_at(index); | |
2196 } | |
2197 JVM_END | |
2198 | |
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2199 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2200 { |
2201 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2202 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2203 bounds_check(cp, index, CHECK_(0.0)); |
2204 constantTag tag = cp->tag_at(index); | |
2205 if (!tag.is_double()) { | |
2206 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2207 } | |
2208 return cp->double_at(index); | |
2209 } | |
2210 JVM_END | |
2211 | |
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2212 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2213 { |
2214 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2215 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2216 bounds_check(cp, index, CHECK_NULL); |
2217 constantTag tag = cp->tag_at(index); | |
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2218 if (!tag.is_string()) { |
0 | 2219 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2220 } | |
2221 oop str = cp->string_at(index, CHECK_NULL); | |
2222 return (jstring) JNIHandles::make_local(str); | |
2223 } | |
2224 JVM_END | |
2225 | |
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2226 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2227 { |
2228 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2229 JvmtiVMObjectAllocEventCollector oam; | |
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2230 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2231 bounds_check(cp, index, CHECK_NULL); |
2232 constantTag tag = cp->tag_at(index); | |
2233 if (!tag.is_symbol()) { | |
2234 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2235 } | |
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2236 Symbol* sym = cp->symbol_at(index); |
0 | 2237 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2238 return (jstring) JNIHandles::make_local(str()); | |
2239 } | |
2240 JVM_END | |
2241 | |
2242 | |
2243 // Assertion support. ////////////////////////////////////////////////////////// | |
2244 | |
2245 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2246 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2247 assert(cls != NULL, "bad class"); | |
2248 | |
2249 oop r = JNIHandles::resolve(cls); | |
2250 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2251 if (java_lang_Class::is_primitive(r)) return false; | |
2252 | |
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2253 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2254 assert(k->oop_is_instance(), "must be an instance klass"); |
2255 if (! k->oop_is_instance()) return false; | |
0 | 2256 |
2257 ResourceMark rm(THREAD); | |
6983 | 2258 const char* name = k->name()->as_C_string(); |
2259 bool system_class = k->class_loader() == NULL; | |
0 | 2260 return JavaAssertions::enabled(name, system_class); |
2261 | |
2262 JVM_END | |
2263 | |
2264 | |
2265 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2266 // command-line assertion arguments (i.e., -ea, -da). | |
2267 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2268 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2269 JvmtiVMObjectAllocEventCollector oam; | |
2270 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2271 return JNIHandles::make_local(env, asd); | |
2272 JVM_END | |
2273 | |
2274 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2275 | |
2276 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2277 | |
2278 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2279 // All functions from this section should call the jvmtiThreadSate function: | |
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2280 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2281 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2282 // was invoked in the middle of the class redefinition. |
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2283 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2284 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2285 | |
2286 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2287 JVMWrapper("JVM_GetClassNameUTF"); | |
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2288 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2289 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2290 return k->name()->as_utf8(); |
0 | 2291 JVM_END |
2292 | |
2293 | |
2294 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2295 JVMWrapper("JVM_GetClassCPTypes"); | |
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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 // types will have length zero if this is not an InstanceKlass |
0 | 2299 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2300 if (k->oop_is_instance()) { |
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2301 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2302 for (int index = cp->length() - 1; index >= 0; index--) { |
2303 constantTag tag = cp->tag_at(index); | |
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2304 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2305 } |
2306 } | |
2307 JVM_END | |
2308 | |
2309 | |
2310 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2311 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2312 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2313 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2314 if (!k->oop_is_instance()) |
0 | 2315 return 0; |
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2316 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2317 JVM_END |
2318 | |
2319 | |
2320 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2321 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2322 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2323 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2324 if (!k->oop_is_instance()) |
0 | 2325 return 0; |
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2326 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2327 JVM_END |
2328 | |
2329 | |
2330 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2331 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2332 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2333 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2334 if (!k->oop_is_instance()) |
0 | 2335 return 0; |
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2336 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2337 JVM_END |
2338 | |
2339 | |
2340 // The following methods, used for the verifier, are never called with | |
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2341 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2342 // Typically, these methods are called in a loop with bounds determined |
2343 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2344 // zero for arrays. | |
2345 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2346 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2347 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2348 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2349 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2350 int length = method->checked_exceptions_length(); |
0 | 2351 if (length > 0) { |
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2352 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2353 for (int i = 0; i < length; i++) { |
2354 exceptions[i] = table[i].class_cp_index; | |
2355 } | |
2356 } | |
2357 JVM_END | |
2358 | |
2359 | |
2360 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2361 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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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->checked_exceptions_length(); |
0 | 2366 JVM_END |
2367 | |
2368 | |
2369 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2370 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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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 memcpy(code, method->code_base(), method->code_size()); |
0 | 2375 JVM_END |
2376 | |
2377 | |
2378 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2379 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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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->code_size(); |
0 | 2384 JVM_END |
2385 | |
2386 | |
2387 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2388 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2389 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2390 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2391 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2392 ExceptionTable extable(method); |
6213
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|
2393 entry->start_pc = extable.start_pc(entry_index); |
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2394 entry->end_pc = extable.end_pc(entry_index); |
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2395 entry->handler_pc = extable.handler_pc(entry_index); |
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|
2396 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2397 JVM_END |
2398 | |
2399 | |
2400 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2401 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2402 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2403 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2404 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2405 return method->exception_table_length(); |
0 | 2406 JVM_END |
2407 | |
2408 | |
2409 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2410 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2411 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2412 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2413 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2414 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2415 JVM_END |
2416 | |
2417 | |
2418 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2419 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2420 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2421 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2422 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2423 JVM_END |
2424 | |
2425 | |
2426 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2427 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2428 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2429 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2430 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2431 return method->max_locals(); |
0 | 2432 JVM_END |
2433 | |
2434 | |
2435 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2436 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2437 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2438 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2439 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2440 return method->size_of_parameters(); |
0 | 2441 JVM_END |
2442 | |
2443 | |
2444 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2445 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2446 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2447 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2448 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2449 return method->verifier_max_stack(); |
0 | 2450 JVM_END |
2451 | |
2452 | |
2453 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2454 JVMWrapper("JVM_IsConstructorIx"); | |
2455 ResourceMark rm(THREAD); | |
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2456 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2457 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2458 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2459 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2460 JVM_END |
2461 | |
2462 | |
7958
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changeset
|
2463 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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changeset
|
2464 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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changeset
|
2465 ResourceMark rm(THREAD); |
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changeset
|
2466 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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changeset
|
2467 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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changeset
|
2468 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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changeset
|
2469 return method->is_overpass(); |
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|
2470 JVM_END |
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|
2471 |
0 | 2472 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2473 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2474 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2475 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2476 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2477 return method->name()->as_utf8(); |
0 | 2478 JVM_END |
2479 | |
2480 | |
2481 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2482 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2483 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2484 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2485 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2486 return method->signature()->as_utf8(); |
0 | 2487 JVM_END |
2488 | |
2489 /** | |
2490 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2491 * read entries in the constant pool. Since the old verifier always | |
2492 * works on a copy of the code, it will not see any rewriting that | |
2493 * may possibly occur in the middle of verification. So it is important | |
2494 * that nothing it calls tries to use the cpCache instead of the raw | |
2495 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2496 */ | |
2497 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2498 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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|
2499 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2500 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2501 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2502 switch (cp->tag_at(cp_index).value()) { |
2503 case JVM_CONSTANT_Fieldref: | |
2504 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2505 default: | |
2506 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2507 } | |
2508 ShouldNotReachHere(); | |
2509 return NULL; | |
2510 JVM_END | |
2511 | |
2512 | |
2513 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2514 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2515 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2516 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2517 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2518 switch (cp->tag_at(cp_index).value()) { |
2519 case JVM_CONSTANT_InterfaceMethodref: | |
2520 case JVM_CONSTANT_Methodref: | |
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2521 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2522 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2523 default: | |
2524 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2525 } | |
2526 ShouldNotReachHere(); | |
2527 return NULL; | |
2528 JVM_END | |
2529 | |
2530 | |
2531 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2532 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2533 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2534 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2535 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2536 switch (cp->tag_at(cp_index).value()) { |
2537 case JVM_CONSTANT_InterfaceMethodref: | |
2538 case JVM_CONSTANT_Methodref: | |
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2539 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2540 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2541 default: | |
2542 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2543 } | |
2544 ShouldNotReachHere(); | |
2545 return NULL; | |
2546 JVM_END | |
2547 | |
2548 | |
2549 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2550 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2551 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2552 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2553 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2554 switch (cp->tag_at(cp_index).value()) { |
2555 case JVM_CONSTANT_Fieldref: | |
2556 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2557 default: | |
2558 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2559 } | |
2560 ShouldNotReachHere(); | |
2561 return NULL; | |
2562 JVM_END | |
2563 | |
2564 | |
2565 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2566 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2567 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2568 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2569 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2570 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2571 return classname->as_utf8(); |
2572 JVM_END | |
2573 | |
2574 | |
2575 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2576 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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|
2577 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2578 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2579 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2580 switch (cp->tag_at(cp_index).value()) { |
2581 case JVM_CONSTANT_Fieldref: { | |
2582 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2583 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2584 return classname->as_utf8(); |
2585 } | |
2586 default: | |
2587 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2588 } | |
2589 ShouldNotReachHere(); | |
2590 return NULL; | |
2591 JVM_END | |
2592 | |
2593 | |
2594 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2595 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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|
2596 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2597 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2598 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2599 switch (cp->tag_at(cp_index).value()) { |
2600 case JVM_CONSTANT_Methodref: | |
2601 case JVM_CONSTANT_InterfaceMethodref: { | |
2602 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2603 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2604 return classname->as_utf8(); |
2605 } | |
2606 default: | |
2607 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2608 } | |
2609 ShouldNotReachHere(); | |
2610 return NULL; | |
2611 JVM_END | |
2612 | |
2613 | |
3938 | 2614 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2615 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2616 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2617 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2618 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2619 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
6725
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|
2620 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2621 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2622 switch (cp->tag_at(cp_index).value()) { |
2623 case JVM_CONSTANT_Fieldref: { | |
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
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|
2624 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2625 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2626 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2627 if (fs.name() == name && fs.signature() == signature) { | |
2628 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2629 } |
2630 } | |
2631 return -1; | |
2632 } | |
2633 default: | |
2634 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2635 } | |
2636 ShouldNotReachHere(); | |
2637 return 0; | |
2638 JVM_END | |
2639 | |
2640 | |
2641 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2642 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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|
2643 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2644 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2645 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2646 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2647 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2648 switch (cp->tag_at(cp_index).value()) { |
2649 case JVM_CONSTANT_Methodref: | |
2650 case JVM_CONSTANT_InterfaceMethodref: { | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2651 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2652 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
6725
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|
2653 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2654 int methods_count = methods->length(); |
2655 for (int i = 0; i < methods_count; i++) { | |
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|
2656 Method* method = methods->at(i); |
0 | 2657 if (method->name() == name && method->signature() == signature) { |
2658 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2659 } | |
2660 } | |
2661 return -1; | |
2662 } | |
2663 default: | |
2664 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2665 } | |
2666 ShouldNotReachHere(); | |
2667 return 0; | |
2668 JVM_END | |
2669 | |
2670 | |
2671 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2672 | |
2673 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2674 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2675 JVM_END | |
2676 | |
2677 | |
2678 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2679 JVMWrapper("JVM_IsSameClassPackage"); | |
2680 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2681 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
6725
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|
2682 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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|
2683 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2684 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2685 JVM_END | |
2686 | |
2687 | |
2688 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2689 | |
2690 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2691 JVMWrapper2("JVM_Open (%s)", fname); | |
2692 | |
2693 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2694 int result = os::open(fname, flags, mode); |
0 | 2695 if (result >= 0) { |
2696 return result; | |
2697 } else { | |
2698 switch(errno) { | |
2699 case EEXIST: | |
2700 return JVM_EEXIST; | |
2701 default: | |
2702 return -1; | |
2703 } | |
2704 } | |
2705 JVM_END | |
2706 | |
2707 | |
2708 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2709 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2710 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2711 return os::close(fd); |
0 | 2712 JVM_END |
2713 | |
2714 | |
2715 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2716 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2717 | |
2718 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2719 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2720 JVM_END |
2721 | |
2722 | |
2723 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2724 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2725 | |
2726 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2727 return (jint)os::write(fd, buf, nbytes); |
0 | 2728 JVM_END |
2729 | |
2730 | |
2731 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2732 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2733 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2734 return os::available(fd, pbytes); |
0 | 2735 JVM_END |
2736 | |
2737 | |
2738 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2739 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2740 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2741 return os::lseek(fd, offset, whence); |
0 | 2742 JVM_END |
2743 | |
2744 | |
2745 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2746 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
|
2747 return os::ftruncate(fd, length); |
0 | 2748 JVM_END |
2749 | |
2750 | |
2751 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2752 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2753 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2754 return os::fsync(fd); |
0 | 2755 JVM_END |
2756 | |
2757 | |
2758 // Printing support ////////////////////////////////////////////////// | |
2759 extern "C" { | |
2760 | |
2761 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2762 // see bug 4399518, 4417214 | |
2763 if ((intptr_t)count <= 0) return -1; | |
2764 return vsnprintf(str, count, fmt, args); | |
2765 } | |
2766 | |
2767 | |
2768 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2769 va_list args; | |
2770 int len; | |
2771 va_start(args, fmt); | |
2772 len = jio_vsnprintf(str, count, fmt, args); | |
2773 va_end(args); | |
2774 return len; | |
2775 } | |
2776 | |
2777 | |
2778 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2779 int len; | |
2780 va_list args; | |
2781 va_start(args, fmt); | |
2782 len = jio_vfprintf(f, fmt, args); | |
2783 va_end(args); | |
2784 return len; | |
2785 } | |
2786 | |
2787 | |
2788 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2789 if (Arguments::vfprintf_hook() != NULL) { | |
2790 return Arguments::vfprintf_hook()(f, fmt, args); | |
2791 } else { | |
2792 return vfprintf(f, fmt, args); | |
2793 } | |
2794 } | |
2795 | |
2796 | |
2191 | 2797 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2798 int len; |
2799 va_list args; | |
2800 va_start(args, fmt); | |
2801 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2802 va_end(args); | |
2803 return len; | |
2804 } | |
2805 | |
2806 | |
2807 // HotSpot specific jio method | |
2808 void jio_print(const char* s) { | |
2809 // Try to make this function as atomic as possible. | |
2810 if (Arguments::vfprintf_hook() != NULL) { | |
2811 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2812 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2813 // 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
|
2814 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2815 } |
2816 } | |
2817 | |
2818 } // Extern C | |
2819 | |
2820 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2821 | |
2822 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2823 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2824 // OSThread objects. The exception to this rule is when the target object is the thread | |
2825 // doing the operation, in which case we know that the thread won't exit until the | |
2826 // operation is done (all exits being voluntary). There are a few cases where it is | |
2827 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2828 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2829 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2830 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2831 // implementation is local to this file, we always lock Threads_lock for that one. | |
2832 | |
2833 static void thread_entry(JavaThread* thread, TRAPS) { | |
2834 HandleMark hm(THREAD); | |
2835 Handle obj(THREAD, thread->threadObj()); | |
2836 JavaValue result(T_VOID); | |
2837 JavaCalls::call_virtual(&result, | |
2838 obj, | |
1142 | 2839 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
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|
2840 vmSymbols::run_method_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2841 vmSymbols::void_method_signature(), |
0 | 2842 THREAD); |
2843 } | |
2844 | |
2845 | |
2846 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2847 JVMWrapper("JVM_StartThread"); | |
2848 JavaThread *native_thread = NULL; | |
2849 | |
2850 // We cannot hold the Threads_lock when we throw an exception, | |
2851 // due to rank ordering issues. Example: we might need to grab the | |
2852 // Heap_lock while we construct the exception. | |
2853 bool throw_illegal_thread_state = false; | |
2854 | |
2855 // We must release the Threads_lock before we can post a jvmti event | |
2856 // in Thread::start. | |
2857 { | |
2858 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2859 // we operate. | |
2860 MutexLocker mu(Threads_lock); | |
2861 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2862 // 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
|
2863 // 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
|
2864 // 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
|
2865 // 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
|
2866 // (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
|
2867 // 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
|
2868 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
|
2869 throw_illegal_thread_state = true; |
0 | 2870 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2871 // 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
|
2872 // 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
|
2873 |
0 | 2874 jlong size = |
2875 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2876 // Allocate the C++ Thread structure and create the native thread. The | |
2877 // stack size retrieved from java is signed, but the constructor takes | |
2878 // size_t (an unsigned type), so avoid passing negative values which would | |
2879 // result in really large stacks. | |
2880 size_t sz = size > 0 ? (size_t) size : 0; | |
2881 native_thread = new JavaThread(&thread_entry, sz); | |
2882 | |
2883 // At this point it may be possible that no osthread was created for the | |
2884 // JavaThread due to lack of memory. Check for this situation and throw | |
2885 // an exception if necessary. Eventually we may want to change this so | |
2886 // that we only grab the lock if the thread was created successfully - | |
2887 // then we can also do this check and throw the exception in the | |
2888 // JavaThread constructor. | |
2889 if (native_thread->osthread() != NULL) { | |
2890 // Note: the current thread is not being used within "prepare". | |
2891 native_thread->prepare(jthread); | |
2892 } | |
2893 } | |
2894 } | |
2895 | |
2896 if (throw_illegal_thread_state) { | |
2897 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2898 } | |
2899 | |
2900 assert(native_thread != NULL, "Starting null thread?"); | |
2901 | |
2902 if (native_thread->osthread() == NULL) { | |
2903 // No one should hold a reference to the 'native_thread'. | |
2904 delete native_thread; | |
2905 if (JvmtiExport::should_post_resource_exhausted()) { | |
2906 JvmtiExport::post_resource_exhausted( | |
2907 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2908 "unable to create new native thread"); | |
2909 } | |
2910 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2911 "unable to create new native thread"); | |
2912 } | |
2913 | |
2914 Thread::start(native_thread); | |
2915 | |
2916 JVM_END | |
2917 | |
2918 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2919 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2920 // 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
|
2921 // same thread as the sender, no safepoint is needed. |
0 | 2922 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2923 JVMWrapper("JVM_StopThread"); | |
2924 | |
2925 oop java_throwable = JNIHandles::resolve(throwable); | |
2926 if (java_throwable == NULL) { | |
2927 THROW(vmSymbols::java_lang_NullPointerException()); | |
2928 } | |
2929 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2930 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
|
2931 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2932 "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
|
2933 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
|
2934 // First check if thread is alive |
0 | 2935 if (receiver != NULL) { |
2936 // Check if exception is getting thrown at self (use oop equality, since the | |
2937 // target object might exit) | |
2938 if (java_thread == thread->threadObj()) { | |
2939 THROW_OOP(java_throwable); | |
2940 } else { | |
2941 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2942 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2943 } | |
2944 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2945 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2946 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2947 // - 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
|
2948 // - 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
|
2949 // 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
|
2950 // 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
|
2951 // stillborn flag for the first case, and if the thread has already |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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2952 // exited setting this flag has no affect |
ccfcb502af3f
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changeset
|
2953 java_lang_Thread::set_stillborn(java_thread); |
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|
2954 } |
0 | 2955 JVM_END |
2956 | |
2957 | |
2958 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2959 JVMWrapper("JVM_IsThreadAlive"); | |
2960 | |
2961 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2962 return java_lang_Thread::is_alive(thread_oop); | |
2963 JVM_END | |
2964 | |
2965 | |
2966 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2967 JVMWrapper("JVM_SuspendThread"); | |
2968 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2969 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2970 | |
2971 if (receiver != NULL) { | |
2972 // thread has run and has not exited (still on threads list) | |
2973 | |
2974 { | |
2975 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2976 if (receiver->is_external_suspend()) { | |
2977 // Don't allow nested external suspend requests. We can't return | |
2978 // an error from this interface so just ignore the problem. | |
2979 return; | |
2980 } | |
2981 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2982 return; | |
2983 } | |
2984 receiver->set_external_suspend(); | |
2985 } | |
2986 | |
2987 // java_suspend() will catch threads in the process of exiting | |
2988 // and will ignore them. | |
2989 receiver->java_suspend(); | |
2990 | |
2991 // It would be nice to have the following assertion in all the | |
2992 // time, but it is possible for a racing resume request to have | |
2993 // resumed this thread right after we suspended it. Temporarily | |
2994 // enable this assertion if you are chasing a different kind of | |
2995 // bug. | |
2996 // | |
2997 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2998 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2999 } | |
3000 JVM_END | |
3001 | |
3002 | |
3003 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3004 JVMWrapper("JVM_ResumeThread"); | |
3005 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3006 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3007 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3008 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3009 // looks at it. | |
3010 MutexLocker ml(Threads_lock); | |
3011 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3012 if (thr != NULL) { | |
3013 // the thread has run and is not in the process of exiting | |
3014 thr->java_resume(); | |
3015 } | |
3016 JVM_END | |
3017 | |
3018 | |
3019 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3020 JVMWrapper("JVM_SetThreadPriority"); | |
3021 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3022 MutexLocker ml(Threads_lock); | |
3023 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3024 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3025 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3026 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3027 Thread::set_priority(thr, (ThreadPriority)prio); | |
3028 } | |
3029 JVM_END | |
3030 | |
3031 | |
3032 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3033 JVMWrapper("JVM_Yield"); | |
3034 if (os::dont_yield()) return; | |
4006 | 3035 #ifndef USDT2 |
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3036 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3037 #else /* USDT2 */ |
3038 HOTSPOT_THREAD_YIELD(); | |
3039 #endif /* USDT2 */ | |
0 | 3040 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3041 // Critical for similar threading behaviour | |
3042 if (ConvertYieldToSleep) { | |
3043 os::sleep(thread, MinSleepInterval, false); | |
3044 } else { | |
3045 os::yield(); | |
3046 } | |
3047 JVM_END | |
3048 | |
3049 | |
3050 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3051 JVMWrapper("JVM_Sleep"); | |
3052 | |
3053 if (millis < 0) { | |
3054 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3055 } | |
3056 | |
3057 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3058 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3059 } | |
3060 | |
3061 // Save current thread state and restore it at the end of this block. | |
3062 // And set new thread state to SLEEPING. | |
3063 JavaThreadSleepState jtss(thread); | |
3064 | |
4006 | 3065 #ifndef USDT2 |
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|
3066 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3067 #else /* USDT2 */ |
3068 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3069 millis); | |
3070 #endif /* USDT2 */ | |
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3071 |
10405 | 3072 EventThreadSleep event; |
3073 | |
0 | 3074 if (millis == 0) { |
3075 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3076 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3077 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3078 // for SOLARIS | |
3079 if (ConvertSleepToYield) { | |
3080 os::yield(); | |
3081 } else { | |
3082 ThreadState old_state = thread->osthread()->get_state(); | |
3083 thread->osthread()->set_state(SLEEPING); | |
3084 os::sleep(thread, MinSleepInterval, false); | |
3085 thread->osthread()->set_state(old_state); | |
3086 } | |
3087 } else { | |
3088 ThreadState old_state = thread->osthread()->get_state(); | |
3089 thread->osthread()->set_state(SLEEPING); | |
3090 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3091 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3092 // us while we were sleeping. We do not overwrite those. | |
3093 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3094 if (event.should_commit()) { |
3095 event.set_time(millis); | |
3096 event.commit(); | |
3097 } | |
4006 | 3098 #ifndef USDT2 |
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|
3099 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3100 #else /* USDT2 */ |
3101 HOTSPOT_THREAD_SLEEP_END( | |
3102 1); | |
3103 #endif /* USDT2 */ | |
0 | 3104 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3105 // to properly restore the thread state. That's likely wrong. | |
3106 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3107 } | |
3108 } | |
3109 thread->osthread()->set_state(old_state); | |
3110 } | |
10405 | 3111 if (event.should_commit()) { |
3112 event.set_time(millis); | |
3113 event.commit(); | |
3114 } | |
4006 | 3115 #ifndef USDT2 |
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|
3116 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3117 #else /* USDT2 */ |
3118 HOTSPOT_THREAD_SLEEP_END( | |
3119 0); | |
3120 #endif /* USDT2 */ | |
0 | 3121 JVM_END |
3122 | |
3123 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3124 JVMWrapper("JVM_CurrentThread"); | |
3125 oop jthread = thread->threadObj(); | |
3126 assert (thread != NULL, "no current thread!"); | |
3127 return JNIHandles::make_local(env, jthread); | |
3128 JVM_END | |
3129 | |
3130 | |
3131 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3132 JVMWrapper("JVM_CountStackFrames"); | |
3133 | |
3134 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3135 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3136 bool throw_illegal_thread_state = false; | |
3137 int count = 0; | |
3138 | |
3139 { | |
3140 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3141 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3142 // acquire of the lock | |
3143 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3144 | |
3145 if (thr == NULL) { | |
3146 // do nothing | |
3147 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3148 // Check whether this java thread has been suspended already. If not, throws | |
3149 // IllegalThreadStateException. We defer to throw that exception until | |
3150 // Threads_lock is released since loading exception class has to leave VM. | |
3151 // The correct way to test a thread is actually suspended is | |
3152 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3153 // the Threads_lock. The above tests are sufficient for our purposes | |
3154 // provided the walkability of the stack is stable - which it isn't | |
3155 // 100% but close enough for most practical purposes. | |
3156 throw_illegal_thread_state = true; | |
3157 } else { | |
3158 // Count all java activation, i.e., number of vframes | |
3159 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3160 // Native frames are not counted | |
3161 if (!vfst.method()->is_native()) count++; | |
3162 } | |
3163 } | |
3164 } | |
3165 | |
3166 if (throw_illegal_thread_state) { | |
3167 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3168 "this thread is not suspended"); | |
3169 } | |
3170 return count; | |
3171 JVM_END | |
3172 | |
3173 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3174 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3175 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3176 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3177 // outside the critical section. Threads_lock is hot so we want to minimize | |
3178 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3179 // two steps. The 1st phase, performed under Threads_lock, would return | |
3180 // a closure that'd be invoked after Threads_lock was dropped. | |
3181 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3182 // admit spurious wakeups. | |
3183 | |
3184 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3185 JVMWrapper("JVM_Interrupt"); | |
3186 | |
3187 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3188 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3189 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3190 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3191 // acquire of the lock | |
3192 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3193 if (thr != NULL) { | |
3194 Thread::interrupt(thr); | |
3195 } | |
3196 JVM_END | |
3197 | |
3198 | |
3199 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3200 JVMWrapper("JVM_IsInterrupted"); | |
3201 | |
3202 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3203 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3204 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3205 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3206 // acquire of the lock | |
3207 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3208 if (thr == NULL) { | |
3209 return JNI_FALSE; | |
3210 } else { | |
3211 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3212 } | |
3213 JVM_END | |
3214 | |
3215 | |
3216 // Return true iff the current thread has locked the object passed in | |
3217 | |
3218 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3219 JVMWrapper("JVM_HoldsLock"); | |
3220 assert(THREAD->is_Java_thread(), "sanity check"); | |
3221 if (obj == NULL) { | |
3222 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3223 } | |
3224 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3225 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3226 JVM_END | |
3227 | |
3228 | |
3229 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3230 JVMWrapper("JVM_DumpAllStacks"); | |
3231 VM_PrintThreads op; | |
3232 VMThread::execute(&op); | |
3233 if (JvmtiExport::should_post_data_dump()) { | |
3234 JvmtiExport::post_data_dump(); | |
3235 } | |
3236 JVM_END | |
3237 | |
4006 | 3238 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3239 JVMWrapper("JVM_SetNativeThreadName"); | |
3240 ResourceMark rm(THREAD); | |
3241 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3242 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3243 // Thread naming only supported for the current thread, doesn't work for | |
3244 // target threads. | |
3245 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3246 // we don't set the name of an attached thread to avoid stepping | |
3247 // on other programs | |
3248 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3249 os::set_native_thread_name(thread_name); | |
3250 } | |
3251 JVM_END | |
0 | 3252 |
3253 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3254 | |
3255 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3256 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3257 if (jthread->privileged_stack_top() == NULL) return false; | |
3258 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3259 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3260 if (loader == NULL) return true; | |
3261 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3262 if (trusted) return true; | |
3263 } | |
3264 return false; | |
3265 } | |
3266 | |
3267 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3268 JVMWrapper("JVM_CurrentLoadedClass"); | |
3269 ResourceMark rm(THREAD); | |
3270 | |
3271 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3272 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3273 bool trusted = is_trusted_frame(thread, &vfst); | |
3274 if (trusted) return NULL; | |
3275 | |
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|
3276 Method* m = vfst.method(); |
0 | 3277 if (!m->is_native()) { |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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|
3278 InstanceKlass* holder = m->method_holder(); |
18fb7da42534
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coleenp
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diff
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|
3279 oop loader = holder->class_loader(); |
0 | 3280 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
18fb7da42534
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coleenp
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6831
diff
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|
3281 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3282 } |
3283 } | |
3284 } | |
3285 return NULL; | |
3286 JVM_END | |
3287 | |
3288 | |
3289 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3290 JVMWrapper("JVM_CurrentClassLoader"); | |
3291 ResourceMark rm(THREAD); | |
3292 | |
3293 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3294 | |
3295 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3296 bool trusted = is_trusted_frame(thread, &vfst); | |
3297 if (trusted) return NULL; | |
3298 | |
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3299 Method* m = vfst.method(); |
0 | 3300 if (!m->is_native()) { |
6940
18fb7da42534
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6831
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|
3301 InstanceKlass* holder = m->method_holder(); |
0 | 3302 assert(holder->is_klass(), "just checking"); |
6940
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|
3303 oop loader = holder->class_loader(); |
0 | 3304 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3305 return JNIHandles::make_local(env, loader); | |
3306 } | |
3307 } | |
3308 } | |
3309 return NULL; | |
3310 JVM_END | |
3311 | |
3312 | |
3313 // Utility object for collecting method holders walking down the stack | |
3314 class KlassLink: public ResourceObj { | |
3315 public: | |
3316 KlassHandle klass; | |
3317 KlassLink* next; | |
3318 | |
3319 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3320 }; | |
3321 | |
3322 | |
3323 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3324 JVMWrapper("JVM_GetClassContext"); | |
3325 ResourceMark rm(THREAD); | |
3326 JvmtiVMObjectAllocEventCollector oam; | |
3327 // Collect linked list of (handles to) method holders | |
3328 KlassLink* first = NULL; | |
3329 KlassLink* last = NULL; | |
3330 int depth = 0; | |
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|
3331 vframeStream vfst(thread); |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3332 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3333 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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|
3334 // This must only be called from SecurityManager.getClassContext |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3335 Method* m = vfst.method(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3336 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3337 m->name() == vmSymbols::getClassContext_name() && |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3338 m->signature() == vmSymbols::void_class_array_signature())) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
3339 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3340 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
3341 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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diff
changeset
|
3342 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3343 // Collect method holders |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3344 for (; !vfst.at_end(); vfst.security_next()) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3345 Method* m = vfst.method(); |
0 | 3346 // Native frames are not returned |
8866
16885e702c88
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diff
changeset
|
3347 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3348 Klass* holder = m->method_holder(); |
0 | 3349 assert(holder->is_klass(), "just checking"); |
3350 depth++; | |
3351 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3352 if (first == NULL) { | |
3353 first = last = l; | |
3354 } else { | |
3355 last->next = l; | |
3356 last = l; | |
3357 } | |
3358 } | |
3359 } | |
3360 | |
3361 // Create result array of type [Ljava/lang/Class; | |
1142 | 3362 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3363 // Fill in mirrors corresponding to method holders |
3364 int index = 0; | |
3365 while (first != NULL) { | |
6983 | 3366 result->obj_at_put(index++, first->klass()->java_mirror()); |
0 | 3367 first = first->next; |
3368 } | |
3369 assert(index == depth, "just checking"); | |
3370 | |
3371 return (jobjectArray) JNIHandles::make_local(env, result); | |
3372 JVM_END | |
3373 | |
3374 | |
3375 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3376 JVMWrapper("JVM_ClassDepth"); | |
3377 ResourceMark rm(THREAD); | |
3378 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3379 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3380 | |
3381 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3382 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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3383 if (class_name_sym == NULL) { |
0 | 3384 return -1; |
3385 } | |
3386 | |
3387 int depth = 0; | |
3388 | |
3389 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3390 if (!vfst.method()->is_native()) { | |
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3391 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3392 assert(holder->is_klass(), "just checking"); |
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3393 if (holder->name() == class_name_sym) { |
0 | 3394 return depth; |
3395 } | |
3396 depth++; | |
3397 } | |
3398 } | |
3399 return -1; | |
3400 JVM_END | |
3401 | |
3402 | |
3403 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3404 JVMWrapper("JVM_ClassLoaderDepth"); | |
3405 ResourceMark rm(THREAD); | |
3406 int depth = 0; | |
3407 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3408 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3409 bool trusted = is_trusted_frame(thread, &vfst); | |
3410 if (trusted) return -1; | |
3411 | |
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3412 Method* m = vfst.method(); |
0 | 3413 if (!m->is_native()) { |
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3414 InstanceKlass* holder = m->method_holder(); |
0 | 3415 assert(holder->is_klass(), "just checking"); |
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3416 oop loader = holder->class_loader(); |
0 | 3417 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3418 return depth; | |
3419 } | |
3420 depth++; | |
3421 } | |
3422 } | |
3423 return -1; | |
3424 JVM_END | |
3425 | |
3426 | |
3427 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3428 | |
3429 | |
3430 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3431 JVMWrapper("JVM_GetSystemPackage"); | |
3432 ResourceMark rm(THREAD); | |
3433 JvmtiVMObjectAllocEventCollector oam; | |
3434 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3435 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3436 return (jstring) JNIHandles::make_local(result); | |
3437 JVM_END | |
3438 | |
3439 | |
3440 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3441 JVMWrapper("JVM_GetSystemPackages"); | |
3442 JvmtiVMObjectAllocEventCollector oam; | |
3443 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3444 return (jobjectArray) JNIHandles::make_local(result); | |
3445 JVM_END | |
3446 | |
3447 | |
3448 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3449 | |
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3450 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3451 if (current_class == NULL) { |
3452 return true; | |
3453 } | |
3454 if ((current_class == field_class) || access.is_public()) { | |
3455 return true; | |
3456 } | |
3457 | |
3458 if (access.is_protected()) { | |
3459 // See if current_class is a subclass of field_class | |
6983 | 3460 if (current_class->is_subclass_of(field_class)) { |
0 | 3461 return true; |
3462 } | |
3463 } | |
3464 | |
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3465 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3466 } |
3467 | |
3468 | |
3469 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3470 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3471 JVMWrapper("JVM_AllocateNewObject"); | |
3472 JvmtiVMObjectAllocEventCollector oam; | |
3473 // Receiver is not used | |
3474 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3475 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3476 | |
3477 // Cannot instantiate primitive types | |
3478 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3479 ResourceMark rm(THREAD); | |
3480 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3481 } | |
3482 | |
3483 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3484 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3485 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3486 ResourceMark rm(THREAD); |
3487 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3488 } | |
3489 | |
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3490 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3491 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3492 |
3493 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3494 | |
3495 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3496 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3497 | |
3498 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3499 curr_klass->initialize(CHECK_NULL); | |
3500 | |
3501 methodHandle m (THREAD, | |
3502 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3503 vmSymbols::void_method_signature())); | |
3504 if (m.is_null()) { | |
3505 ResourceMark rm(THREAD); | |
3506 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3507 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3508 vmSymbols::object_initializer_name(), |
3509 vmSymbols::void_method_signature())); | |
3510 } | |
3511 | |
3512 if (curr_klass == init_klass && !m->is_public()) { | |
3513 // Calling the constructor for class 'curr_klass'. | |
3514 // Only allow calls to a public no-arg constructor. | |
3515 // This path corresponds to creating an Externalizable object. | |
3516 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3517 } | |
3518 | |
3519 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3520 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3521 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3522 } | |
3523 | |
3524 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3525 // Call constructor m. This might call a constructor higher up in the hierachy | |
3526 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3527 | |
3528 return JNIHandles::make_local(obj()); | |
3529 JVM_END | |
3530 | |
3531 | |
3532 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3533 JVMWrapper("JVM_AllocateNewArray"); | |
3534 JvmtiVMObjectAllocEventCollector oam; | |
3535 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3536 | |
3537 if (java_lang_Class::is_primitive(mirror)) { | |
3538 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3539 } | |
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3540 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3541 oop result; |
3542 | |
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3543 if (k->oop_is_typeArray()) { |
0 | 3544 // typeArray |
6831
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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3545 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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3546 } else if (k->oop_is_objArray()) { |
0 | 3547 // objArray |
6831
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3548 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3549 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3550 result = oak->allocate(length, CHECK_NULL); | |
3551 } else { | |
3552 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3553 } | |
3554 return JNIHandles::make_local(env, result); | |
3555 JVM_END | |
3556 | |
3557 | |
3558 // Return the first non-null class loader up the execution stack, or null | |
3559 // if only code from the null class loader is on the stack. | |
3560 | |
3561 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3562 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3563 // UseNewReflection | |
3564 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
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3565 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3566 if (loader != NULL) { |
3567 return JNIHandles::make_local(env, loader); | |
3568 } | |
3569 } | |
3570 return NULL; | |
3571 JVM_END | |
3572 | |
3573 | |
3574 // Load a class relative to the most recent class on the stack with a non-null | |
3575 // classloader. | |
3576 // This function has been deprecated and should not be considered part of the | |
3577 // specified JVM interface. | |
3578 | |
3579 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3580 jclass currClass, jstring currClassName)) | |
3581 JVMWrapper("JVM_LoadClass0"); | |
3582 // Receiver is not used | |
3583 ResourceMark rm(THREAD); | |
3584 | |
3585 // Class name argument is not guaranteed to be in internal format | |
3586 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3587 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3588 | |
3589 const char* str = java_lang_String::as_utf8_string(string()); | |
3590 | |
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3591 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3592 // It's impossible to create this class; the name cannot fit |
3593 // into the constant pool. | |
3594 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3595 } | |
3596 | |
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3597 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3598 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3599 // Find the most recent class on the stack with a non-null classloader | |
3600 oop loader = NULL; | |
3601 oop protection_domain = NULL; | |
3602 if (curr_klass.is_null()) { | |
3603 for (vframeStream vfst(thread); | |
3604 !vfst.at_end() && loader == NULL; | |
3605 vfst.next()) { | |
3606 if (!vfst.method()->is_native()) { | |
6940
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|
3607 InstanceKlass* holder = vfst.method()->method_holder(); |
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coleenp
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diff
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|
3608 loader = holder->class_loader(); |
18fb7da42534
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diff
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|
3609 protection_domain = holder->protection_domain(); |
0 | 3610 } |
3611 } | |
3612 } else { | |
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3613 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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3614 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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3615 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3616 } |
3617 Handle h_loader(THREAD, loader); | |
3618 Handle h_prot (THREAD, protection_domain); | |
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3619 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
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|
3620 false, thread); |
715dceaa89b7
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|
3621 if (TraceClassResolution && result != NULL) { |
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3622 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
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|
3623 } |
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|
3624 return result; |
0 | 3625 JVM_END |
3626 | |
3627 | |
3628 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3629 | |
3630 | |
3631 // resolve array handle and check arguments | |
3632 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3633 if (arr == NULL) { | |
3634 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3635 } | |
3636 oop a = JNIHandles::resolve_non_null(arr); | |
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3637 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3638 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3639 } | |
3640 return arrayOop(a); | |
3641 } | |
3642 | |
3643 | |
3644 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3645 JVMWrapper("JVM_GetArrayLength"); | |
3646 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3647 return a->length(); | |
3648 JVM_END | |
3649 | |
3650 | |
3651 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3652 JVMWrapper("JVM_Array_Get"); | |
3653 JvmtiVMObjectAllocEventCollector oam; | |
3654 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3655 jvalue value; | |
3656 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3657 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3658 return JNIHandles::make_local(env, box); | |
3659 JVM_END | |
3660 | |
3661 | |
3662 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3663 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3664 jvalue value; | |
3665 value.i = 0; // to initialize value before getting used in CHECK | |
3666 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3667 assert(a->is_typeArray(), "just checking"); | |
3668 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3669 BasicType wide_type = (BasicType) wCode; | |
3670 if (type != wide_type) { | |
3671 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3672 } | |
3673 return value; | |
3674 JVM_END | |
3675 | |
3676 | |
3677 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3678 JVMWrapper("JVM_SetArrayElement"); | |
3679 arrayOop a = check_array(env, arr, false, CHECK); | |
3680 oop box = JNIHandles::resolve(val); | |
3681 jvalue value; | |
3682 value.i = 0; // to initialize value before getting used in CHECK | |
3683 BasicType value_type; | |
3684 if (a->is_objArray()) { | |
3685 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3686 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3687 } else { | |
3688 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3689 } | |
3690 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3691 JVM_END | |
3692 | |
3693 | |
3694 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3695 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3696 arrayOop a = check_array(env, arr, true, CHECK); | |
3697 assert(a->is_typeArray(), "just checking"); | |
3698 BasicType value_type = (BasicType) vCode; | |
3699 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3700 JVM_END | |
3701 | |
3702 | |
3703 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3704 JVMWrapper("JVM_NewArray"); | |
3705 JvmtiVMObjectAllocEventCollector oam; | |
3706 oop element_mirror = JNIHandles::resolve(eltClass); | |
3707 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3708 return JNIHandles::make_local(env, result); | |
3709 JVM_END | |
3710 | |
3711 | |
3712 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3713 JVMWrapper("JVM_NewMultiArray"); | |
3714 JvmtiVMObjectAllocEventCollector oam; | |
3715 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3716 oop element_mirror = JNIHandles::resolve(eltClass); | |
3717 assert(dim_array->is_typeArray(), "just checking"); | |
3718 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3719 return JNIHandles::make_local(env, result); | |
3720 JVM_END | |
3721 | |
3722 | |
3723 // Networking library support //////////////////////////////////////////////////////////////////// | |
3724 | |
3725 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3726 JVMWrapper("JVM_InitializeSocketLibrary"); | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3727 return 0; |
0 | 3728 JVM_END |
3729 | |
3730 | |
3731 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3732 JVMWrapper("JVM_Socket"); | |
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828eafbd85cc
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ikrylov
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diff
changeset
|
3733 return os::socket(domain, type, protocol); |
0 | 3734 JVM_END |
3735 | |
3736 | |
3737 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3738 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3739 //%note jvm_r6 | |
1980
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diff
changeset
|
3740 return os::socket_close(fd); |
0 | 3741 JVM_END |
3742 | |
3743 | |
3744 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3745 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3746 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
3747 return os::socket_shutdown(fd, howto); |
0 | 3748 JVM_END |
3749 | |
3750 | |
3751 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3752 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3753 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3754 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3755 JVM_END |
3756 | |
3757 | |
3758 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3759 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3760 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3761 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3762 JVM_END |
3763 | |
3764 | |
3765 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3766 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3767 //%note jvm_r6 | |
1980
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diff
changeset
|
3768 return os::timeout(fd, timeout); |
0 | 3769 JVM_END |
3770 | |
3771 | |
3772 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3773 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3774 //%note jvm_r6 | |
1980
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diff
changeset
|
3775 return os::listen(fd, count); |
0 | 3776 JVM_END |
3777 | |
3778 | |
3779 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3780 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3781 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3782 return os::connect(fd, him, (socklen_t)len); |
0 | 3783 JVM_END |
3784 | |
3785 | |
3786 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3787 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3788 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3789 return os::bind(fd, him, (socklen_t)len); |
0 | 3790 JVM_END |
3791 | |
3792 | |
3793 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3794 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3795 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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4006
diff
changeset
|
3796 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3797 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3798 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3799 return result; |
0 | 3800 JVM_END |
3801 | |
3802 | |
3803 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3804 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3805 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3806 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3807 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
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diff
changeset
|
3808 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3809 return result; |
0 | 3810 JVM_END |
3811 | |
3812 | |
3813 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3814 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3815 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3816 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3817 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
|
3818 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3819 return result; |
0 | 3820 JVM_END |
3821 | |
3822 | |
3823 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3824 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3825 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3826 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3827 JVM_END |
3828 | |
3829 | |
3830 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3831 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3832 //%note jvm_r6 | |
1980
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parents:
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diff
changeset
|
3833 return os::socket_available(fd, pbytes); |
0 | 3834 JVM_END |
3835 | |
3836 | |
3837 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3838 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3839 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3840 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
4006
diff
changeset
|
3841 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:
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diff
changeset
|
3842 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3843 return result; |
0 | 3844 JVM_END |
3845 | |
3846 | |
3847 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3848 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3849 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3850 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3851 JVM_END |
3852 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3853 |
0 | 3854 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3855 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
3856 return os::get_host_name(name, namelen); |
828eafbd85cc
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ikrylov
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diff
changeset
|
3857 JVM_END |
0 | 3858 |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3859 |
0 | 3860 // Library support /////////////////////////////////////////////////////////////////////////// |
3861 | |
3862 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3863 //%note jvm_ct | |
3864 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3865 char ebuf[1024]; | |
3866 void *load_result; | |
3867 { | |
3868 ThreadToNativeFromVM ttnfvm(thread); | |
1980
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ikrylov
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diff
changeset
|
3869 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3870 } |
3871 if (load_result == NULL) { | |
3872 char msg[1024]; | |
3873 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3874 // Since 'ebuf' may contain a string encoded using | |
3875 // platform encoding scheme, we need to pass | |
3876 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3877 // as the last argument. See bug 6367357. | |
3878 Handle h_exception = | |
3879 Exceptions::new_exception(thread, | |
3880 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3881 msg, Exceptions::unsafe_to_utf8); | |
3882 | |
3883 THROW_HANDLE_0(h_exception); | |
3884 } | |
3885 return load_result; | |
3886 JVM_END | |
3887 | |
3888 | |
3889 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3890 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
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ikrylov
parents:
1972
diff
changeset
|
3891 os::dll_unload(handle); |
0 | 3892 JVM_END |
3893 | |
3894 | |
3895 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3896 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3897 return os::dll_lookup(handle, name); |
0 | 3898 JVM_END |
3899 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3900 |
0 | 3901 // Floating point support //////////////////////////////////////////////////////////////////// |
3902 | |
3903 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3904 JVMWrapper("JVM_IsNaN"); | |
3905 return g_isnan(a); | |
3906 JVM_END | |
3907 | |
3908 | |
3909 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3910 | |
3911 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3912 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3913 return Threads::is_supported_jni_version_including_1_1(version); | |
3914 JVM_END | |
3915 | |
3916 | |
3917 // String support /////////////////////////////////////////////////////////////////////////// | |
3918 | |
3919 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3920 JVMWrapper("JVM_InternString"); | |
3921 JvmtiVMObjectAllocEventCollector oam; | |
3922 if (str == NULL) return NULL; | |
3923 oop string = JNIHandles::resolve_non_null(str); | |
3924 oop result = StringTable::intern(string, CHECK_NULL); | |
3925 return (jstring) JNIHandles::make_local(env, result); | |
3926 JVM_END | |
3927 | |
3928 | |
3929 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3930 | |
3931 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3932 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3933 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3934 // that only works with java threads. | |
3935 | |
3936 | |
3937 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3938 VM_Exit::block_if_vm_exited(); | |
3939 JVMWrapper("JVM_RawMonitorCreate"); | |
3940 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3941 } | |
3942 | |
3943 | |
3944 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3945 VM_Exit::block_if_vm_exited(); | |
3946 JVMWrapper("JVM_RawMonitorDestroy"); | |
3947 delete ((Mutex*) mon); | |
3948 } | |
3949 | |
3950 | |
3951 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3952 VM_Exit::block_if_vm_exited(); | |
3953 JVMWrapper("JVM_RawMonitorEnter"); | |
3954 ((Mutex*) mon)->jvm_raw_lock(); | |
3955 return 0; | |
3956 } | |
3957 | |
3958 | |
3959 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3960 VM_Exit::block_if_vm_exited(); | |
3961 JVMWrapper("JVM_RawMonitorExit"); | |
3962 ((Mutex*) mon)->jvm_raw_unlock(); | |
3963 } | |
3964 | |
3965 | |
3966 // Support for Serialization | |
3967 | |
3968 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3969 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3970 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3971 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3972 | |
3973 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3974 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3975 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3976 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3977 | |
3978 | |
3979 void initialize_converter_functions() { | |
3980 if (JDK_Version::is_gte_jdk14x_version()) { | |
3981 // These functions only exist for compatibility with 1.3.1 and earlier | |
3982 return; | |
3983 } | |
3984 | |
3985 // called from universe_post_init() | |
3986 assert( | |
3987 int_bits_to_float_fn == NULL && | |
3988 long_bits_to_double_fn == NULL && | |
3989 float_to_int_bits_fn == NULL && | |
3990 double_to_long_bits_fn == NULL , | |
3991 "initialization done twice" | |
3992 ); | |
3993 // initialize | |
3994 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3995 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3996 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3997 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3998 // verify | |
3999 assert( | |
4000 int_bits_to_float_fn != NULL && | |
4001 long_bits_to_double_fn != NULL && | |
4002 float_to_int_bits_fn != NULL && | |
4003 double_to_long_bits_fn != NULL , | |
4004 "initialization failed" | |
4005 ); | |
4006 } | |
4007 | |
4008 | |
4009 // Serialization | |
4010 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
4011 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
4012 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
4013 | |
4014 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
4015 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
4016 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
4017 oop o = JNIHandles::resolve(obj); | |
4018 | |
4019 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
4020 THROW(vmSymbols::java_lang_NullPointerException()); | |
4021 } | |
4022 | |
4023 jsize nfids = fids->length(); | |
4024 if (nfids == 0) return; | |
4025 | |
4026 if (tcodes->length() < nfids) { | |
4027 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
4028 } | |
4029 | |
4030 jsize off = 0; | |
4031 /* loop through fields, setting values */ | |
4032 for (jsize i = 0; i < nfids; i++) { | |
4033 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
4034 int field_offset; | |
4035 if (fid != NULL) { | |
4036 // NULL is a legal value for fid, but retrieving the field offset | |
4037 // trigger assertion in that case | |
4038 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4039 } | |
4040 | |
4041 switch (tcodes->char_at(i)) { | |
4042 case 'Z': | |
4043 if (fid != NULL) { | |
4044 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
4045 o->bool_field_put(field_offset, val); | |
4046 } | |
4047 off++; | |
4048 break; | |
4049 | |
4050 case 'B': | |
4051 if (fid != NULL) { | |
4052 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
4053 } | |
4054 off++; | |
4055 break; | |
4056 | |
4057 case 'C': | |
4058 if (fid != NULL) { | |
4059 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
4060 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
4061 o->char_field_put(field_offset, val); | |
4062 } | |
4063 off += 2; | |
4064 break; | |
4065 | |
4066 case 'S': | |
4067 if (fid != NULL) { | |
4068 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
4069 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
4070 o->short_field_put(field_offset, val); | |
4071 } | |
4072 off += 2; | |
4073 break; | |
4074 | |
4075 case 'I': | |
4076 if (fid != NULL) { | |
4077 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4078 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4079 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4080 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4081 o->int_field_put(field_offset, ival); | |
4082 } | |
4083 off += 4; | |
4084 break; | |
4085 | |
4086 case 'F': | |
4087 if (fid != NULL) { | |
4088 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4089 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4090 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4091 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4092 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
4093 o->float_field_put(field_offset, fval); | |
4094 } | |
4095 off += 4; | |
4096 break; | |
4097 | |
4098 case 'J': | |
4099 if (fid != NULL) { | |
4100 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4101 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4102 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4103 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4104 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4105 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4106 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4107 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4108 o->long_field_put(field_offset, lval); | |
4109 } | |
4110 off += 8; | |
4111 break; | |
4112 | |
4113 case 'D': | |
4114 if (fid != NULL) { | |
4115 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4116 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4117 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4118 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4119 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4120 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4121 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4122 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4123 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
4124 o->double_field_put(field_offset, dval); | |
4125 } | |
4126 off += 8; | |
4127 break; | |
4128 | |
4129 default: | |
4130 // Illegal typecode | |
4131 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4132 } | |
4133 } | |
4134 JVM_END | |
4135 | |
4136 | |
4137 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
4138 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
4139 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
4140 | |
4141 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
4142 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
4143 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
4144 oop o = JNIHandles::resolve(obj); | |
4145 | |
4146 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
4147 THROW(vmSymbols::java_lang_NullPointerException()); | |
4148 } | |
4149 | |
4150 jsize nfids = fids->length(); | |
4151 if (nfids == 0) return; | |
4152 | |
4153 if (tcodes->length() < nfids) { | |
4154 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
4155 } | |
4156 | |
4157 /* loop through fields, fetching values */ | |
4158 jsize off = 0; | |
4159 for (jsize i = 0; i < nfids; i++) { | |
4160 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
4161 if (fid == NULL) { | |
4162 THROW(vmSymbols::java_lang_NullPointerException()); | |
4163 } | |
4164 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4165 | |
4166 switch (tcodes->char_at(i)) { | |
4167 case 'Z': | |
4168 { | |
4169 jboolean val = o->bool_field(field_offset); | |
4170 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
4171 } | |
4172 break; | |
4173 | |
4174 case 'B': | |
4175 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
4176 break; | |
4177 | |
4178 case 'C': | |
4179 { | |
4180 jchar val = o->char_field(field_offset); | |
4181 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4182 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4183 } | |
4184 break; | |
4185 | |
4186 case 'S': | |
4187 { | |
4188 jshort val = o->short_field(field_offset); | |
4189 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4190 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4191 } | |
4192 break; | |
4193 | |
4194 case 'I': | |
4195 { | |
4196 jint val = o->int_field(field_offset); | |
4197 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4198 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4199 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4200 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4201 } | |
4202 break; | |
4203 | |
4204 case 'F': | |
4205 { | |
4206 jfloat fval = o->float_field(field_offset); | |
4207 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
4208 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
4209 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
4210 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
4211 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
4212 } | |
4213 break; | |
4214 | |
4215 case 'J': | |
4216 { | |
4217 jlong val = o->long_field(field_offset); | |
4218 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
4219 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
4220 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
4221 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
4222 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4223 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4224 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4225 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4226 } | |
4227 break; | |
4228 | |
4229 case 'D': | |
4230 { | |
4231 jdouble dval = o->double_field(field_offset); | |
4232 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
4233 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
4234 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
4235 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
4236 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
4237 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
4238 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
4239 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
4240 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4241 } | |
4242 break; | |
4243 | |
4244 default: | |
4245 // Illegal typecode | |
4246 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4247 } | |
4248 } | |
4249 JVM_END | |
4250 | |
4251 | |
4252 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4253 | |
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4254 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4255 // Security Note: |
4256 // The Java level wrapper will perform the necessary security check allowing | |
4257 // us to pass the NULL as the initiating class loader. | |
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4258 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
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|
4259 |
0 | 4260 KlassHandle klass_handle(THREAD, klass); |
4261 // Check if we should initialize the class | |
4262 if (init && klass_handle->oop_is_instance()) { | |
4263 klass_handle->initialize(CHECK_NULL); | |
4264 } | |
4265 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4266 } | |
4267 | |
4268 | |
4269 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4270 | |
4271 #ifndef PRODUCT | |
4272 | |
4273 extern "C" { | |
4274 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4275 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4276 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4277 } | |
4278 | |
4279 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4280 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4281 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
4282 JVM_END | |
4283 | |
4284 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4285 JVMWrapper("JVM_AccessVMIntFlag"); | |
4286 intx v; | |
4287 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4288 *value = (jint)v; | |
4289 return result; | |
4290 JVM_END | |
4291 | |
4292 | |
4293 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4294 JVMWrapper("JVM_VMBreakPoint"); | |
4295 oop the_obj = JNIHandles::resolve(obj); | |
4296 BREAKPOINT; | |
4297 JVM_END | |
4298 | |
4299 | |
4300 #endif | |
4301 | |
4302 | |
4303 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4304 | |
4305 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4306 JVMWrapper("JVM_InvokeMethod"); | |
4307 Handle method_handle; | |
4308 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4309 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4310 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4311 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4312 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4313 jobject res = JNIHandles::make_local(env, result); | |
4314 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4315 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4316 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4317 if (java_lang_Class::is_primitive(ret_type)) { | |
4318 // Only for primitive type vm allocates memory for java object. | |
4319 // See box() method. | |
4320 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4321 } | |
4322 } | |
4323 return res; | |
4324 } else { | |
4325 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4326 } | |
4327 JVM_END | |
4328 | |
4329 | |
4330 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4331 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4332 oop constructor_mirror = JNIHandles::resolve(c); | |
4333 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4334 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4335 jobject res = JNIHandles::make_local(env, result); | |
4336 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4337 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4338 } | |
4339 return res; | |
4340 JVM_END | |
4341 | |
4342 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4343 | |
4344 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4345 JVMWrapper("JVM_SupportsCX8"); | |
4346 return VM_Version::supports_cx8(); | |
4347 JVM_END | |
4348 | |
4349 | |
4350 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4351 JVMWrapper("JVM_CX8Field"); | |
4352 jlong res; | |
4353 oop o = JNIHandles::resolve(obj); | |
4354 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4355 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4356 | |
4357 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4358 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4359 | |
4360 return res == oldVal; | |
4361 JVM_END | |
4362 | |
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4363 // DTrace /////////////////////////////////////////////////////////////////// |
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|
4364 |
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|
4365 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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|
4366 JVMWrapper("JVM_DTraceGetVersion"); |
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diff
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|
4367 return (jint)JVM_TRACING_DTRACE_VERSION; |
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diff
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|
4368 JVM_END |
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diff
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|
4369 |
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diff
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|
4370 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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diff
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|
4371 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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diff
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|
4372 JVM_DTraceProvider* providers)) |
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diff
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|
4373 JVMWrapper("JVM_DTraceActivate"); |
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diff
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|
4374 return DTraceJSDT::activate( |
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diff
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|
4375 version, module_name, providers_count, providers, CHECK_0); |
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diff
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|
4376 JVM_END |
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diff
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|
4377 |
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|
4378 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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diff
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|
4379 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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diff
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|
4380 return DTraceJSDT::is_probe_enabled(method); |
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diff
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|
4381 JVM_END |
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diff
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|
4382 |
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diff
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|
4383 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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diff
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|
4384 JVMWrapper("JVM_DTraceDispose"); |
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diff
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4385 DTraceJSDT::dispose(handle); |
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|
4386 JVM_END |
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diff
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|
4387 |
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|
4388 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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diff
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4389 JVMWrapper("JVM_DTraceIsSupported"); |
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4390 return DTraceJSDT::is_supported(); |
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|
4391 JVM_END |
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|
4392 |
0 | 4393 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4394 // jvmti agent threads, and JNI attaching threads are skipped) | |
4395 // See CR 6404306 regarding JNI attaching threads | |
4396 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4397 ResourceMark rm(THREAD); | |
4398 ThreadsListEnumerator tle(THREAD, false, false); | |
4399 JvmtiVMObjectAllocEventCollector oam; | |
4400 | |
4401 int num_threads = tle.num_threads(); | |
1142 | 4402 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4403 objArrayHandle threads_ah(THREAD, r); |
4404 | |
4405 for (int i = 0; i < num_threads; i++) { | |
4406 Handle h = tle.get_threadObj(i); | |
4407 threads_ah->obj_at_put(i, h()); | |
4408 } | |
4409 | |
4410 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4411 JVM_END | |
4412 | |
4413 | |
4414 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4415 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4416 // the corresponding entry in the given threads array | |
4417 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4418 JVMWrapper("JVM_DumpThreads"); | |
4419 JvmtiVMObjectAllocEventCollector oam; | |
4420 | |
4421 // Check if threads is null | |
4422 if (threads == NULL) { | |
4423 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4424 } | |
4425 | |
4426 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4427 objArrayHandle ah(THREAD, a); | |
4428 int num_threads = ah->length(); | |
4429 // check if threads is non-empty array | |
4430 if (num_threads == 0) { | |
4431 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4432 } | |
4433 | |
4434 // check if threads is not an array of objects of Thread class | |
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4435 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4436 if (k != SystemDictionary::Thread_klass()) { |
0 | 4437 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4438 } | |
4439 | |
4440 ResourceMark rm(THREAD); | |
4441 | |
4442 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4443 for (int i = 0; i < num_threads; i++) { | |
4444 oop thread_obj = ah->obj_at(i); | |
4445 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4446 thread_handle_array->append(h); | |
4447 } | |
4448 | |
4449 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4450 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4451 | |
4452 JVM_END | |
4453 | |
4454 // JVM monitoring and management support | |
4455 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4456 return Management::get_jmm_interface(version); | |
4457 JVM_END | |
4458 | |
4459 // com.sun.tools.attach.VirtualMachine agent properties support | |
4460 // | |
4461 // Initialize the agent properties with the properties maintained in the VM | |
4462 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4463 JVMWrapper("JVM_InitAgentProperties"); | |
4464 ResourceMark rm; | |
4465 | |
4466 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4467 | |
4468 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4469 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4470 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4471 return properties; | |
4472 JVM_END | |
4473 | |
4474 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4475 { | |
4476 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4477 JvmtiVMObjectAllocEventCollector oam; | |
4478 | |
4479 if (ofClass == NULL) { | |
4480 return NULL; | |
4481 } | |
4482 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4483 // Special handling for primitive objects | |
4484 if (java_lang_Class::is_primitive(mirror())) { | |
4485 return NULL; | |
4486 } | |
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|
4487 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4488 if (!k->oop_is_instance()) { |
0 | 4489 return NULL; |
4490 } | |
4491 instanceKlassHandle ik_h(THREAD, k); | |
4492 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4493 if (encl_method_class_idx == 0) { | |
4494 return NULL; | |
4495 } | |
1142 | 4496 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4497 objArrayHandle dest(THREAD, dest_o); |
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4498 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4499 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4500 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4501 if (encl_method_method_idx != 0) { | |
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4502 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4503 extract_low_short_from_int( |
4504 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4505 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4506 dest->obj_at_put(1, str()); | |
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4507 sym = ik_h->constants()->symbol_at( |
0 | 4508 extract_high_short_from_int( |
4509 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4510 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4511 dest->obj_at_put(2, str()); | |
4512 } | |
4513 return (jobjectArray) JNIHandles::make_local(dest()); | |
4514 } | |
4515 JVM_END | |
4516 | |
4517 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4518 jint javaThreadState)) | |
4519 { | |
4520 // If new thread states are added in future JDK and VM versions, | |
4521 // this should check if the JDK version is compatible with thread | |
4522 // states supported by the VM. Return NULL if not compatible. | |
4523 // | |
4524 // This function must map the VM java_lang_Thread::ThreadStatus | |
4525 // to the Java thread state that the JDK supports. | |
4526 // | |
4527 | |
4528 typeArrayHandle values_h; | |
4529 switch (javaThreadState) { | |
4530 case JAVA_THREAD_STATE_NEW : { | |
4531 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4532 values_h = typeArrayHandle(THREAD, r); | |
4533 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4534 break; | |
4535 } | |
4536 case JAVA_THREAD_STATE_RUNNABLE : { | |
4537 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4538 values_h = typeArrayHandle(THREAD, r); | |
4539 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4540 break; | |
4541 } | |
4542 case JAVA_THREAD_STATE_BLOCKED : { | |
4543 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4544 values_h = typeArrayHandle(THREAD, r); | |
4545 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4546 break; | |
4547 } | |
4548 case JAVA_THREAD_STATE_WAITING : { | |
4549 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4550 values_h = typeArrayHandle(THREAD, r); | |
4551 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4552 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4553 break; | |
4554 } | |
4555 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4556 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4557 values_h = typeArrayHandle(THREAD, r); | |
4558 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4559 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4560 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4561 break; | |
4562 } | |
4563 case JAVA_THREAD_STATE_TERMINATED : { | |
4564 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4565 values_h = typeArrayHandle(THREAD, r); | |
4566 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4567 break; | |
4568 } | |
4569 default: | |
4570 // Unknown state - probably incompatible JDK version | |
4571 return NULL; | |
4572 } | |
4573 | |
4574 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4575 } | |
4576 JVM_END | |
4577 | |
4578 | |
4579 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4580 jint javaThreadState, | |
4581 jintArray values)) | |
4582 { | |
4583 // If new thread states are added in future JDK and VM versions, | |
4584 // this should check if the JDK version is compatible with thread | |
4585 // states supported by the VM. Return NULL if not compatible. | |
4586 // | |
4587 // This function must map the VM java_lang_Thread::ThreadStatus | |
4588 // to the Java thread state that the JDK supports. | |
4589 // | |
4590 | |
4591 ResourceMark rm; | |
4592 | |
4593 // Check if threads is null | |
4594 if (values == NULL) { | |
4595 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4596 } | |
4597 | |
4598 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4599 typeArrayHandle values_h(THREAD, v); | |
4600 | |
4601 objArrayHandle names_h; | |
4602 switch (javaThreadState) { | |
4603 case JAVA_THREAD_STATE_NEW : { | |
4604 assert(values_h->length() == 1 && | |
4605 values_h->int_at(0) == java_lang_Thread::NEW, | |
4606 "Invalid threadStatus value"); | |
4607 | |
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("NEW", CHECK_NULL); | |
4613 names_h->obj_at_put(0, name()); | |
4614 break; | |
4615 } | |
4616 case JAVA_THREAD_STATE_RUNNABLE : { | |
4617 assert(values_h->length() == 1 && | |
4618 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4619 "Invalid threadStatus value"); | |
4620 | |
1142 | 4621 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4622 1, /* only 1 substate */ |
4623 CHECK_NULL); | |
4624 names_h = objArrayHandle(THREAD, r); | |
4625 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4626 names_h->obj_at_put(0, name()); | |
4627 break; | |
4628 } | |
4629 case JAVA_THREAD_STATE_BLOCKED : { | |
4630 assert(values_h->length() == 1 && | |
4631 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4632 "Invalid threadStatus value"); | |
4633 | |
1142 | 4634 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4635 1, /* only 1 substate */ |
4636 CHECK_NULL); | |
4637 names_h = objArrayHandle(THREAD, r); | |
4638 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4639 names_h->obj_at_put(0, name()); | |
4640 break; | |
4641 } | |
4642 case JAVA_THREAD_STATE_WAITING : { | |
4643 assert(values_h->length() == 2 && | |
4644 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4645 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4646 "Invalid threadStatus value"); | |
1142 | 4647 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4648 2, /* number of substates */ |
4649 CHECK_NULL); | |
4650 names_h = objArrayHandle(THREAD, r); | |
4651 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4652 CHECK_NULL); | |
4653 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4654 CHECK_NULL); | |
4655 names_h->obj_at_put(0, name0()); | |
4656 names_h->obj_at_put(1, name1()); | |
4657 break; | |
4658 } | |
4659 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4660 assert(values_h->length() == 3 && | |
4661 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4662 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4663 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4664 "Invalid threadStatus value"); | |
1142 | 4665 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4666 3, /* number of substates */ |
4667 CHECK_NULL); | |
4668 names_h = objArrayHandle(THREAD, r); | |
4669 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4670 CHECK_NULL); | |
4671 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4672 CHECK_NULL); | |
4673 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4674 CHECK_NULL); | |
4675 names_h->obj_at_put(0, name0()); | |
4676 names_h->obj_at_put(1, name1()); | |
4677 names_h->obj_at_put(2, name2()); | |
4678 break; | |
4679 } | |
4680 case JAVA_THREAD_STATE_TERMINATED : { | |
4681 assert(values_h->length() == 1 && | |
4682 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4683 "Invalid threadStatus value"); | |
1142 | 4684 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4685 1, /* only 1 substate */ |
4686 CHECK_NULL); | |
4687 names_h = objArrayHandle(THREAD, r); | |
4688 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4689 names_h->obj_at_put(0, name()); | |
4690 break; | |
4691 } | |
4692 default: | |
4693 // Unknown state - probably incompatible JDK version | |
4694 return NULL; | |
4695 } | |
4696 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4697 } | |
4698 JVM_END | |
4699 | |
4700 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4701 { | |
4702 memset(info, 0, sizeof(info_size)); | |
4703 | |
4704 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4705 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4706 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4707 | |
4708 // when we add a new capability in the jvm_version_info struct, we should also | |
4709 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4710 // counter defined in runtimeService.cpp. | |
4711 info->is_attachable = AttachListener::is_attach_supported(); | |
4712 } | |
4713 JVM_END |