Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 18003:dda2ae6f9557
8046542: [I.finalize() calls from methods compiled by C1 do not cause IllegalAccessError on Sparc
Summary: call to Object.finalize() sometimes allowed by compilers on array type
Reviewed-by: iveresov, vlivanov
author | roland |
---|---|
date | Wed, 02 Jul 2014 22:54:18 +0200 |
parents | a103c376459a |
children | 52b4284cb496 1e657b902392 ce8f6bb717c9 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 | |
14411 | 79 #ifdef TARGET_OS_FAMILY_aix |
80 # include "jvm_aix.h" | |
81 #endif | |
3960 | 82 #ifdef TARGET_OS_FAMILY_bsd |
83 # include "jvm_bsd.h" | |
84 #endif | |
1972 | 85 |
0 | 86 #include <errno.h> |
87 | |
4006 | 88 #ifndef USDT2 |
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89 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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90 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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91 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 92 #endif /* !USDT2 */ |
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93 |
0 | 94 /* |
95 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
96 such ctors and calls MUST NOT come between an oop declaration/init and its | |
97 usage because if objects are move this may cause various memory stomps, bus | |
98 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
99 failures": | |
100 | |
101 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
102 JVMWrapper("JVM_GetClassDeclaredFields"); | |
103 | |
104 // Object address to be held directly in mirror & not visible to GC | |
105 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
106 | |
107 // If this ctor can hit a safepoint, moving objects around, then | |
108 ComplexConstructor foo; | |
109 | |
110 // Boom! mirror may point to JUNK instead of the intended object | |
111 (some dereference of mirror) | |
112 | |
113 // Here's another call that may block for GC, making mirror stale | |
114 MutexLocker ml(some_lock); | |
115 | |
116 // And here's an initializer that can result in a stale oop | |
117 // all in one step. | |
118 oop o = call_that_can_throw_exception(TRAPS); | |
119 | |
120 | |
121 The solution is to keep the oop declaration BELOW the ctor or function | |
122 call that might cause a GC, do another resolve to reassign the oop, or | |
123 consider use of a Handle instead of an oop so there is immunity from object | |
124 motion. But note that the "QUICK" entries below do not have a handlemark | |
125 and thus can only support use of handles passed in. | |
126 */ | |
127 | |
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128 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 129 ResourceMark rm; |
130 int line_number = -1; | |
131 const char * source_file = NULL; | |
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132 const char * trace = "explicit"; |
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133 InstanceKlass* caller = NULL; |
0 | 134 JavaThread* jthread = JavaThread::current(); |
135 if (jthread->has_last_Java_frame()) { | |
136 vframeStream vfst(jthread); | |
137 | |
138 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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139 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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140 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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141 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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142 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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143 |
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144 Method* last_caller = NULL; |
0 | 145 |
146 while (!vfst.at_end()) { | |
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147 Method* m = vfst.method(); |
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148 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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149 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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150 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 151 break; |
152 } | |
153 last_caller = m; | |
154 vfst.next(); | |
155 } | |
156 // if this is called from Class.forName0 and that is called from Class.forName, | |
157 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
158 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
159 bool found_it = false; | |
160 if (!vfst.at_end() && | |
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161 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 162 vfst.method()->name() == vmSymbols::forName0_name()) { |
163 vfst.next(); | |
164 if (!vfst.at_end() && | |
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165 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 166 vfst.method()->name() == vmSymbols::forName_name()) { |
167 vfst.next(); | |
168 found_it = true; | |
169 } | |
170 } else if (last_caller != NULL && | |
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171 last_caller->method_holder()->name() == |
0 | 172 vmSymbols::java_lang_ClassLoader() && |
173 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
174 last_caller->name() == vmSymbols::loadClass_name())) { | |
175 found_it = true; | |
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176 } else if (!vfst.at_end()) { |
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177 if (vfst.method()->is_native()) { |
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178 // JNI call |
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179 found_it = true; |
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180 } |
0 | 181 } |
182 if (found_it && !vfst.at_end()) { | |
183 // found the caller | |
184 caller = vfst.method()->method_holder(); | |
185 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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186 if (line_number == -1) { |
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187 // show method name if it's a native method |
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188 trace = vfst.method()->name_and_sig_as_C_string(); |
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189 } |
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190 Symbol* s = caller->source_file_name(); |
0 | 191 if (s != NULL) { |
192 source_file = s->as_C_string(); | |
193 } | |
194 } | |
195 } | |
196 if (caller != NULL) { | |
197 if (to_class != caller) { | |
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198 const char * from = caller->external_name(); |
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199 const char * to = to_class->external_name(); |
0 | 200 // print in a single call to reduce interleaving between threads |
201 if (source_file != NULL) { | |
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202 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 203 } else { |
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204 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 205 } |
206 } | |
207 } | |
208 } | |
209 | |
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210 void trace_class_resolution(Klass* to_class) { |
0 | 211 EXCEPTION_MARK; |
212 trace_class_resolution_impl(to_class, THREAD); | |
213 if (HAS_PENDING_EXCEPTION) { | |
214 CLEAR_PENDING_EXCEPTION; | |
215 } | |
216 } | |
217 | |
218 // Wrapper to trace JVM functions | |
219 | |
220 #ifdef ASSERT | |
221 class JVMTraceWrapper : public StackObj { | |
222 public: | |
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223 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
0 | 224 if (TraceJVMCalls) { |
225 va_list ap; | |
226 va_start(ap, format); | |
227 tty->print("JVM "); | |
228 tty->vprint_cr(format, ap); | |
229 va_end(ap); | |
230 } | |
231 } | |
232 }; | |
233 | |
234 Histogram* JVMHistogram; | |
235 volatile jint JVMHistogram_lock = 0; | |
236 | |
237 class JVMHistogramElement : public HistogramElement { | |
238 public: | |
239 JVMHistogramElement(const char* name); | |
240 }; | |
241 | |
242 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
243 _name = elementName; | |
244 uintx count = 0; | |
245 | |
246 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
247 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
248 count +=1; | |
249 if ( (WarnOnStalledSpinLock > 0) | |
250 && (count % WarnOnStalledSpinLock == 0)) { | |
251 warning("JVMHistogram_lock seems to be stalled"); | |
252 } | |
253 } | |
254 } | |
255 | |
256 if(JVMHistogram == NULL) | |
257 JVMHistogram = new Histogram("JVM Call Counts",100); | |
258 | |
259 JVMHistogram->add_element(this); | |
260 Atomic::dec(&JVMHistogram_lock); | |
261 } | |
262 | |
263 #define JVMCountWrapper(arg) \ | |
264 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
265 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
266 | |
267 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
268 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
269 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
270 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
271 #else | |
272 #define JVMWrapper(arg1) | |
273 #define JVMWrapper2(arg1, arg2) | |
274 #define JVMWrapper3(arg1, arg2, arg3) | |
275 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
276 #endif | |
277 | |
278 | |
279 // Interface version ///////////////////////////////////////////////////////////////////// | |
280 | |
281 | |
282 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
283 return JVM_INTERFACE_VERSION; | |
284 JVM_END | |
285 | |
286 | |
287 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
288 | |
289 | |
290 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
291 JVMWrapper("JVM_CurrentTimeMillis"); | |
292 return os::javaTimeMillis(); | |
293 JVM_END | |
294 | |
295 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
296 JVMWrapper("JVM_NanoTime"); | |
297 return os::javaTimeNanos(); | |
298 JVM_END | |
299 | |
300 | |
301 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
302 jobject dst, jint dst_pos, jint length)) | |
303 JVMWrapper("JVM_ArrayCopy"); | |
304 // Check if we have null pointers | |
305 if (src == NULL || dst == NULL) { | |
306 THROW(vmSymbols::java_lang_NullPointerException()); | |
307 } | |
308 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
309 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
310 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
311 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
312 // Do copy | |
6983 | 313 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 314 JVM_END |
315 | |
316 | |
317 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
318 JavaValue r(T_OBJECT); | |
319 // public synchronized Object put(Object key, Object value); | |
320 HandleMark hm(THREAD); | |
321 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
322 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
323 JavaCalls::call_virtual(&r, | |
324 props, | |
1142 | 325 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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326 vmSymbols::put_name(), |
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327 vmSymbols::object_object_object_signature(), |
0 | 328 key_str, |
329 value_str, | |
330 THREAD); | |
331 } | |
332 | |
333 | |
334 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
335 | |
336 | |
337 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
338 JVMWrapper("JVM_InitProperties"); | |
339 ResourceMark rm; | |
340 | |
341 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
342 | |
343 // System property list includes both user set via -D option and | |
344 // jvm system specific properties. | |
345 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
346 PUTPROP(props, p->key(), p->value()); | |
347 } | |
348 | |
349 // Convert the -XX:MaxDirectMemorySize= command line flag | |
350 // to the sun.nio.MaxDirectMemorySize property. | |
351 // Do this after setting user properties to prevent people | |
352 // from setting the value with a -D option, as requested. | |
353 { | |
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354 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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355 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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356 } else { |
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357 char as_chars[256]; |
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358 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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359 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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360 } |
0 | 361 } |
362 | |
363 // JVM monitoring and management support | |
364 // Add the sun.management.compiler property for the compiler's name | |
365 { | |
366 #undef CSIZE | |
367 #if defined(_LP64) || defined(_WIN64) | |
368 #define CSIZE "64-Bit " | |
369 #else | |
370 #define CSIZE | |
371 #endif // 64bit | |
372 | |
373 #ifdef TIERED | |
374 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
375 #else | |
376 #if defined(COMPILER1) | |
377 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
378 #elif defined(COMPILER2) | |
379 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
380 #else | |
381 const char* compiler_name = ""; | |
382 #endif // compilers | |
383 #endif // TIERED | |
384 | |
385 if (*compiler_name != '\0' && | |
386 (Arguments::mode() != Arguments::_int)) { | |
387 PUTPROP(props, "sun.management.compiler", compiler_name); | |
388 } | |
389 } | |
390 | |
391 return properties; | |
392 JVM_END | |
393 | |
394 | |
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395 /* |
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396 * Return the temporary directory that the VM uses for the attach |
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397 * and perf data files. |
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398 * |
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399 * It is important that this directory is well-known and the |
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400 * same for all VM instances. It cannot be affected by configuration |
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401 * variables such as java.io.tmpdir. |
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402 */ |
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403 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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404 JVMWrapper("JVM_GetTemporaryDirectory"); |
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405 HandleMark hm(THREAD); |
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406 const char* temp_dir = os::get_temp_directory(); |
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407 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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408 return (jstring) JNIHandles::make_local(env, h()); |
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409 JVM_END |
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410 |
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411 |
0 | 412 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
413 | |
414 extern volatile jint vm_created; | |
415 | |
416 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
417 if (vm_created != 0 && (code == 0)) { | |
418 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
419 Universe::run_finalizers_on_exit(); | |
420 } | |
421 before_exit(thread); | |
422 vm_exit(code); | |
423 JVM_END | |
424 | |
425 | |
426 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
427 before_exit(thread); | |
428 vm_exit(code); | |
429 JVM_END | |
430 | |
431 | |
432 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
433 register_on_exit_function(func); | |
434 JVM_END | |
435 | |
436 | |
437 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
438 JVMWrapper("JVM_GC"); | |
439 if (!DisableExplicitGC) { | |
440 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
441 } | |
442 JVM_END | |
443 | |
444 | |
445 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
446 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
447 return Universe::heap()->millis_since_last_gc(); | |
448 JVM_END | |
449 | |
450 | |
451 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
452 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
453 JVM_END | |
454 | |
455 | |
456 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
457 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
458 JVM_END | |
459 | |
460 static inline jlong convert_size_t_to_jlong(size_t val) { | |
461 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
462 NOT_LP64 (return (jlong)val;) | |
463 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
464 } | |
465 | |
466 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
467 JVMWrapper("JVM_TotalMemory"); | |
468 size_t n = Universe::heap()->capacity(); | |
469 return convert_size_t_to_jlong(n); | |
470 JVM_END | |
471 | |
472 | |
473 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
474 JVMWrapper("JVM_FreeMemory"); | |
475 CollectedHeap* ch = Universe::heap(); | |
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476 size_t n; |
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477 { |
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478 MutexLocker x(Heap_lock); |
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479 n = ch->capacity() - ch->used(); |
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480 } |
0 | 481 return convert_size_t_to_jlong(n); |
482 JVM_END | |
483 | |
484 | |
485 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
486 JVMWrapper("JVM_MaxMemory"); | |
487 size_t n = Universe::heap()->max_capacity(); | |
488 return convert_size_t_to_jlong(n); | |
489 JVM_END | |
490 | |
491 | |
492 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
493 JVMWrapper("JVM_ActiveProcessorCount"); | |
494 return os::active_processor_count(); | |
495 JVM_END | |
496 | |
497 | |
498 | |
499 // java.lang.Throwable ////////////////////////////////////////////////////// | |
500 | |
501 | |
502 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
503 JVMWrapper("JVM_FillInStackTrace"); | |
504 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
505 java_lang_Throwable::fill_in_stack_trace(exception); | |
506 JVM_END | |
507 | |
508 | |
509 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
510 JVMWrapper("JVM_GetStackTraceDepth"); | |
511 oop exception = JNIHandles::resolve(throwable); | |
512 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
513 JVM_END | |
514 | |
515 | |
516 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
517 JVMWrapper("JVM_GetStackTraceElement"); | |
518 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
519 oop exception = JNIHandles::resolve(throwable); | |
520 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
521 return JNIHandles::make_local(env, element); | |
522 JVM_END | |
523 | |
524 | |
525 // java.lang.Object /////////////////////////////////////////////// | |
526 | |
527 | |
528 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
529 JVMWrapper("JVM_IHashCode"); | |
530 // as implemented in the classic virtual machine; return 0 if object is NULL | |
531 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
532 JVM_END | |
533 | |
534 | |
535 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
536 JVMWrapper("JVM_MonitorWait"); | |
537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
538 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
539 if (JvmtiExport::should_post_monitor_wait()) { | |
540 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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541 |
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542 // The current thread already owns the monitor and it has not yet |
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543 // been added to the wait queue so the current thread cannot be |
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544 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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545 // event handler cannot accidentally consume an unpark() meant for |
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546 // the ParkEvent associated with this ObjectMonitor. |
0 | 547 } |
548 ObjectSynchronizer::wait(obj, ms, CHECK); | |
549 JVM_END | |
550 | |
551 | |
552 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
553 JVMWrapper("JVM_MonitorNotify"); | |
554 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
555 ObjectSynchronizer::notify(obj, CHECK); | |
556 JVM_END | |
557 | |
558 | |
559 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
560 JVMWrapper("JVM_MonitorNotifyAll"); | |
561 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
562 ObjectSynchronizer::notifyall(obj, CHECK); | |
563 JVM_END | |
564 | |
565 | |
566 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
567 JVMWrapper("JVM_Clone"); | |
568 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
569 const KlassHandle klass (THREAD, obj->klass()); | |
570 JvmtiVMObjectAllocEventCollector oam; | |
571 | |
572 #ifdef ASSERT | |
573 // Just checking that the cloneable flag is set correct | |
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574 if (obj->is_array()) { |
0 | 575 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
576 } else { | |
577 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 578 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 579 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
580 } | |
581 #endif | |
582 | |
583 // Check if class of obj supports the Cloneable interface. | |
584 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
585 if (!klass->is_cloneable()) { | |
586 ResourceMark rm(THREAD); | |
587 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
588 } | |
589 | |
590 // Make shallow object copy | |
591 const int size = obj->size(); | |
592 oop new_obj = NULL; | |
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593 if (obj->is_array()) { |
0 | 594 const int length = ((arrayOop)obj())->length(); |
595 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
596 } else { | |
597 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
598 } | |
599 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
600 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
601 // be suspended in the middle of copying the pointer and end up with parts | |
602 // of two different pointers in the field. Subsequent dereferences will crash. | |
603 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
604 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
605 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
606 // The same is true of StubRoutines::object_copy and the various oop_copy | |
607 // variants, and of the code generated by the inline_native_clone intrinsic. | |
608 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
609 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
610 (size_t)align_object_size(size) / HeapWordsPerLong); | |
611 // Clear the header | |
612 new_obj->init_mark(); | |
613 | |
614 // Store check (mark entire object and let gc sort it out) | |
615 BarrierSet* bs = Universe::heap()->barrier_set(); | |
616 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
617 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
618 | |
619 // Caution: this involves a java upcall, so the clone should be | |
620 // "gc-robust" by this stage. | |
621 if (klass->has_finalizer()) { | |
622 assert(obj->is_instance(), "should be instanceOop"); | |
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623 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 624 } |
625 | |
626 return JNIHandles::make_local(env, oop(new_obj)); | |
627 JVM_END | |
628 | |
629 // java.lang.Compiler //////////////////////////////////////////////////// | |
630 | |
631 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
632 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
633 // functions are all silently ignored unless JVM warnings are printed. | |
634 | |
635 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
636 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
637 JVM_END | |
638 | |
639 | |
640 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
641 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
642 return JNI_FALSE; | |
643 JVM_END | |
644 | |
645 | |
646 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
647 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
648 return JNI_FALSE; | |
649 JVM_END | |
650 | |
651 | |
652 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
653 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
654 return JNI_FALSE; | |
655 JVM_END | |
656 | |
657 | |
658 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
659 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
660 return NULL; | |
661 JVM_END | |
662 | |
663 | |
664 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
665 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
666 JVM_END | |
667 | |
668 | |
669 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
670 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
671 JVM_END | |
672 | |
673 | |
674 | |
675 // Error message support ////////////////////////////////////////////////////// | |
676 | |
677 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
678 JVMWrapper("JVM_GetLastErrorString"); | |
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679 return (jint)os::lasterror(buf, len); |
0 | 680 JVM_END |
681 | |
682 | |
683 // java.io.File /////////////////////////////////////////////////////////////// | |
684 | |
685 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
686 JVMWrapper2("JVM_NativePath (%s)", path); | |
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687 return os::native_path(path); |
0 | 688 JVM_END |
689 | |
690 | |
691 // Misc. class handling /////////////////////////////////////////////////////////// | |
692 | |
693 | |
694 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
695 JVMWrapper("JVM_GetCallerClass"); | |
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696 |
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697 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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698 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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699 // temporarily for existing code to use until a replacement API is defined. |
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700 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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701 Klass* k = thread->security_get_caller_class(depth); |
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702 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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703 } |
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704 |
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705 // Getting the class of the caller frame. |
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706 // |
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707 // The call stack at this point looks something like this: |
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708 // |
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709 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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710 // [1] [ @CallerSensitive API.method ] |
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711 // [.] [ (skipped intermediate frames) ] |
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712 // [n] [ caller ] |
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713 vframeStream vfst(thread); |
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714 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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715 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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716 Method* m = vfst.method(); |
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717 assert(m != NULL, "sanity"); |
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718 switch (n) { |
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|
719 case 0: |
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720 // This must only be called from Reflection.getCallerClass |
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721 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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722 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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723 } |
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724 // fall-through |
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725 case 1: |
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726 // Frame 0 and 1 must be caller sensitive. |
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727 if (!m->caller_sensitive()) { |
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728 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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729 } |
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730 break; |
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731 default: |
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732 if (!m->is_ignored_by_security_stack_walk()) { |
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733 // We have reached the desired frame; return the holder class. |
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734 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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735 } |
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736 break; |
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737 } |
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738 } |
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739 return NULL; |
0 | 740 JVM_END |
741 | |
742 | |
743 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
744 JVMWrapper("JVM_FindPrimitiveClass"); | |
745 oop mirror = NULL; | |
746 BasicType t = name2type(utf); | |
747 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
748 mirror = Universe::java_mirror(t); | |
749 } | |
750 if (mirror == NULL) { | |
751 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
752 } else { | |
753 return (jclass) JNIHandles::make_local(env, mirror); | |
754 } | |
755 JVM_END | |
756 | |
757 | |
758 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
759 JVMWrapper("JVM_ResolveClass"); | |
760 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
761 JVM_END | |
762 | |
878
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763 |
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764 // Returns a class loaded by the bootstrap class loader; or null |
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765 // if not found. ClassNotFoundException is not thrown. |
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766 // |
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767 // Rationale behind JVM_FindClassFromBootLoader |
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768 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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769 // b> because of (a) java.dll has a direct dependecy on the unexported |
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770 // private symbol "_JVM_FindClassFromClassLoader@20". |
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771 // c> the launcher cannot use the private symbol as it dynamically opens |
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772 // the entry point, so if something changes, the launcher will fail |
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773 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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774 // stable exported interface. |
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775 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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776 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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777 // JVM_FindClassFromClassLoader and will not be backward compatible |
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778 // with older JDKs. |
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779 // Thus a public/stable exported entry point is the right solution, |
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780 // public here means public in linker semantics, and is exported only |
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781 // to the JDK, and is not intended to be a public API. |
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782 |
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783 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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784 const char* name)) |
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785 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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786 |
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787 // Java libraries should ensure that name is never null... |
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788 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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789 // It's impossible to create this class; the name cannot fit |
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790 // into the constant pool. |
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791 return NULL; |
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792 } |
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793 |
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794 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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795 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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796 if (k == NULL) { |
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797 return NULL; |
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798 } |
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799 |
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800 if (TraceClassResolution) { |
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801 trace_class_resolution(k); |
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802 } |
6983 | 803 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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804 JVM_END |
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805 |
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806 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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807 jboolean init, jobject loader, |
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808 jboolean throwError)) |
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809 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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810 throwError ? "error" : "exception"); |
388 | 811 // Java libraries should ensure that name is never null... |
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812 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 813 // It's impossible to create this class; the name cannot fit |
814 // into the constant pool. | |
815 if (throwError) { | |
816 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
817 } else { | |
818 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
819 } | |
820 } | |
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821 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 822 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
823 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
824 Handle(), throwError, THREAD); | |
825 | |
826 if (TraceClassResolution && result != NULL) { | |
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827 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 828 } |
829 return result; | |
0 | 830 JVM_END |
831 | |
832 | |
833 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
834 jboolean init, jclass from)) | |
835 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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836 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 837 // It's impossible to create this class; the name cannot fit |
838 // into the constant pool. | |
839 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
840 } | |
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841 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 842 oop from_class_oop = JNIHandles::resolve(from); |
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843 Klass* from_class = (from_class_oop == NULL) |
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844 ? (Klass*)NULL |
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845 : java_lang_Class::as_Klass(from_class_oop); |
0 | 846 oop class_loader = NULL; |
847 oop protection_domain = NULL; | |
848 if (from_class != NULL) { | |
6983 | 849 class_loader = from_class->class_loader(); |
850 protection_domain = from_class->protection_domain(); | |
0 | 851 } |
852 Handle h_loader(THREAD, class_loader); | |
853 Handle h_prot (THREAD, protection_domain); | |
854 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
855 h_prot, true, thread); | |
856 | |
857 if (TraceClassResolution && result != NULL) { | |
858 // this function is generally only used for class loading during verification. | |
859 ResourceMark rm; | |
860 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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861 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 862 const char * from_name = from_class->external_name(); |
0 | 863 |
864 oop mirror = JNIHandles::resolve_non_null(result); | |
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865 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 866 const char * to = to_class->external_name(); |
0 | 867 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
868 } | |
869 | |
870 return result; | |
871 JVM_END | |
872 | |
873 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
874 if (loader.is_null()) { | |
875 return; | |
876 } | |
877 | |
878 // check whether the current caller thread holds the lock or not. | |
879 // If not, increment the corresponding counter | |
880 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
881 ObjectSynchronizer::owner_self) { | |
882 counter->inc(); | |
883 } | |
884 } | |
885 | |
886 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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887 // and JVM_DefineClassWithSourceCond() |
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888 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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889 jobject loader, const jbyte *buf, |
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890 jsize len, jobject pd, const char *source, |
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891 jboolean verify, TRAPS) { |
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892 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 893 |
875
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894 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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895 JavaThread* jt = (JavaThread*) THREAD; |
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896 |
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897 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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898 ClassLoader::perf_define_appclass_selftime(), |
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899 ClassLoader::perf_define_appclasses(), |
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900 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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901 jt->get_thread_stat()->perf_timers_addr(), |
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902 PerfClassTraceTime::DEFINE_CLASS); |
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903 |
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904 if (UsePerfData) { |
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905 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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906 } |
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907 |
0 | 908 // Since exceptions can be thrown, class initialization can take place |
909 // if name is NULL no check for class name in .class stream has to be made. | |
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910 TempNewSymbol class_name = NULL; |
0 | 911 if (name != NULL) { |
912 const int str_len = (int)strlen(name); | |
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913 if (str_len > Symbol::max_length()) { |
0 | 914 // It's impossible to create this class; the name cannot fit |
915 // into the constant pool. | |
916 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
917 } | |
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918 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 919 } |
920 | |
921 ResourceMark rm(THREAD); | |
922 ClassFileStream st((u1*) buf, len, (char *)source); | |
923 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
924 if (UsePerfData) { | |
925 is_lock_held_by_thread(class_loader, | |
926 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
927 THREAD); | |
928 } | |
929 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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930 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 931 protection_domain, &st, |
973
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932 verify != 0, |
0 | 933 CHECK_NULL); |
934 | |
935 if (TraceClassResolution && k != NULL) { | |
936 trace_class_resolution(k); | |
937 } | |
938 | |
6983 | 939 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 940 } |
941 | |
942 | |
943 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
944 JVMWrapper2("JVM_DefineClass %s", name); | |
945 | |
973
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946 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 947 JVM_END |
948 | |
949 | |
950 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
951 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
952 | |
973
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953 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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954 JVM_END |
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955 |
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956 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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957 jobject loader, const jbyte *buf, |
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958 jsize len, jobject pd, |
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959 const char *source, jboolean verify)) |
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960 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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961 |
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962 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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963 JVM_END |
0 | 964 |
965 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
966 JVMWrapper("JVM_FindLoadedClass"); | |
967 ResourceMark rm(THREAD); | |
968 | |
969 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
970 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
971 | |
972 const char* str = java_lang_String::as_utf8_string(string()); | |
973 // Sanity check, don't expect null | |
974 if (str == NULL) return NULL; | |
975 | |
976 const int str_len = (int)strlen(str); | |
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977 if (str_len > Symbol::max_length()) { |
0 | 978 // It's impossible to create this class; the name cannot fit |
979 // into the constant pool. | |
980 return NULL; | |
981 } | |
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982 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 983 |
984 // Security Note: | |
985 // The Java level wrapper will perform the necessary security check allowing | |
986 // us to pass the NULL as the initiating class loader. | |
987 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
988 if (UsePerfData) { | |
989 is_lock_held_by_thread(h_loader, | |
990 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
991 THREAD); | |
992 } | |
993 | |
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994 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 995 h_loader, |
996 Handle(), | |
997 CHECK_NULL); | |
998 | |
999 return (k == NULL) ? NULL : | |
6983 | 1000 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1001 JVM_END |
1002 | |
1003 | |
1004 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
1005 | |
1006 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
1007 assert (cls != NULL, "illegal class"); | |
1008 JVMWrapper("JVM_GetClassName"); | |
1009 JvmtiVMObjectAllocEventCollector oam; | |
1010 ResourceMark rm(THREAD); | |
1011 const char* name; | |
1012 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1013 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
1014 } else { | |
1015 // Consider caching interned string in Klass | |
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1016 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1017 assert(k->is_klass(), "just checking"); |
6983 | 1018 name = k->external_name(); |
0 | 1019 } |
1020 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1021 return (jstring) JNIHandles::make_local(env, result); | |
1022 JVM_END | |
1023 | |
1024 | |
1025 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1026 JVMWrapper("JVM_GetClassInterfaces"); | |
1027 JvmtiVMObjectAllocEventCollector oam; | |
1028 oop mirror = JNIHandles::resolve_non_null(cls); | |
1029 | |
1030 // Special handling for primitive objects | |
1031 if (java_lang_Class::is_primitive(mirror)) { | |
1032 // Primitive objects does not have any interfaces | |
1142 | 1033 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1034 return (jobjectArray) JNIHandles::make_local(env, r); |
1035 } | |
1036 | |
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1037 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1038 // Figure size of result array |
1039 int size; | |
1040 if (klass->oop_is_instance()) { | |
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1041 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1042 } else { |
1043 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1044 size = 2; | |
1045 } | |
1046 | |
1047 // Allocate result array | |
1142 | 1048 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1049 objArrayHandle result (THREAD, r); |
1050 // Fill in result | |
1051 if (klass->oop_is_instance()) { | |
1052 // Regular instance klass, fill in all local interfaces | |
1053 for (int index = 0; index < size; index++) { | |
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1054 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1055 result->obj_at_put(index, k->java_mirror()); |
0 | 1056 } |
1057 } else { | |
1058 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1059 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1060 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1061 } |
1062 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1063 JVM_END | |
1064 | |
1065 | |
1066 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1067 JVMWrapper("JVM_GetClassLoader"); | |
1068 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1069 return NULL; | |
1070 } | |
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1071 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1072 oop loader = k->class_loader(); |
0 | 1073 return JNIHandles::make_local(env, loader); |
1074 JVM_END | |
1075 | |
1076 | |
1077 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1078 JVMWrapper("JVM_IsInterface"); | |
1079 oop mirror = JNIHandles::resolve_non_null(cls); | |
1080 if (java_lang_Class::is_primitive(mirror)) { | |
1081 return JNI_FALSE; | |
1082 } | |
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1083 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1084 jboolean result = k->is_interface(); |
1085 assert(!result || k->oop_is_instance(), | |
0 | 1086 "all interfaces are instance types"); |
1087 // The compiler intrinsic for isInterface tests the | |
1088 // Klass::_access_flags bits in the same way. | |
1089 return result; | |
1090 JVM_END | |
1091 | |
1092 | |
1093 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1094 JVMWrapper("JVM_GetClassSigners"); | |
1095 JvmtiVMObjectAllocEventCollector oam; | |
1096 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1097 // There are no signers for primitive types | |
1098 return NULL; | |
1099 } | |
1100 | |
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1101 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1102 |
1103 // If there are no signers set in the class, or if the class | |
1104 // is an array, return NULL. | |
1105 if (signers == NULL) return NULL; | |
1106 | |
1107 // copy of the signers array | |
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1108 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1109 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1110 for (int index = 0; index < signers->length(); index++) { | |
1111 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1112 } | |
1113 | |
1114 // return the copy | |
1115 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1116 JVM_END | |
1117 | |
1118 | |
1119 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1120 JVMWrapper("JVM_SetClassSigners"); | |
1121 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1122 // This call is ignored for primitive types and arrays. | |
1123 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1124 // be called with an array. Only the bootstrap loader creates arrays. | |
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1125 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1126 if (k->oop_is_instance()) { |
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1127 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1128 } |
1129 } | |
1130 JVM_END | |
1131 | |
1132 | |
1133 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1134 JVMWrapper("JVM_GetProtectionDomain"); | |
1135 if (JNIHandles::resolve(cls) == NULL) { | |
1136 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1137 } | |
1138 | |
1139 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1140 // Primitive types does not have a protection domain. | |
1141 return NULL; | |
1142 } | |
1143 | |
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1144 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1145 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1146 JVM_END |
1147 | |
1148 | |
11010 | 1149 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1150 // If there is a security manager and protection domain, check the access | |
1151 // in the protection domain, otherwise it is authorized. | |
1152 if (java_lang_System::has_security_manager()) { | |
1153 | |
1154 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1155 // this context to revert to older behavior. | |
1156 // In this case the isAuthorized field in AccessControlContext is also not | |
1157 // present. | |
1158 if (Universe::protection_domain_implies_method() == NULL) { | |
1159 return true; | |
1160 } | |
1161 | |
1162 // Whitelist certain access control contexts | |
1163 if (java_security_AccessControlContext::is_authorized(context)) { | |
1164 return true; | |
1165 } | |
1166 | |
1167 oop prot = klass->protection_domain(); | |
1168 if (prot != NULL) { | |
1169 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1170 // in the new wrapper. | |
1171 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1172 Handle h_prot(THREAD, prot); | |
1173 JavaValue result(T_BOOLEAN); | |
1174 JavaCallArguments args(h_prot); | |
1175 JavaCalls::call(&result, m, &args, CHECK_false); | |
1176 return (result.get_jboolean() != 0); | |
1177 } | |
1178 } | |
1179 return true; | |
1180 } | |
1181 | |
1182 // Create an AccessControlContext with a protection domain with null codesource | |
1183 // and null permissions - which gives no permissions. | |
1184 oop create_dummy_access_control_context(TRAPS) { | |
1185 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1186 // new ProtectionDomain(null,null); | |
1187 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1188 Handle null_pd(THREAD, null_protection_domain); | |
1189 | |
1190 // new ProtectionDomain[] {pd}; | |
1191 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1192 context->obj_at_put(0, null_pd()); | |
1193 | |
1194 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1195 objArrayHandle h_context(THREAD, context); | |
1196 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1197 return result; | |
1198 } | |
0 | 1199 |
1200 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1201 JVMWrapper("JVM_DoPrivileged"); | |
1202 | |
1203 if (action == NULL) { | |
1204 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1205 } | |
1206 | |
11010 | 1207 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1208 vframeStream vfst(thread); | |
1209 vfst.security_get_caller_frame(1); | |
1210 | |
1211 if (vfst.at_end()) { | |
1212 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1213 } | |
1214 | |
1215 Method* method = vfst.method(); | |
1216 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1217 | |
1218 // Check that action object understands "Object run()" | |
1219 Handle h_context; | |
1220 if (context != NULL) { | |
1221 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1222 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1223 if (!authorized) { | |
1224 // Create an unprivileged access control object and call it's run function | |
1225 // instead. | |
1226 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1227 h_context = Handle(THREAD, noprivs); | |
1228 } | |
1229 } | |
0 | 1230 |
1231 // Check that action object understands "Object run()" | |
1232 Handle object (THREAD, JNIHandles::resolve(action)); | |
1233 | |
1234 // get run() method | |
6983 | 1235 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1236 vmSymbols::run_method_name(), |
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1237 vmSymbols::void_object_signature(), |
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1238 Klass::normal); |
0 | 1239 methodHandle m (THREAD, m_oop); |
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1240 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1241 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1242 } | |
1243 | |
11010 | 1244 // Stack allocated list of privileged stack elements |
1245 PrivilegedElement pi; | |
0 | 1246 if (!vfst.at_end()) { |
11010 | 1247 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1248 thread->set_privileged_stack_top(&pi); |
1249 } | |
1250 | |
1251 | |
1252 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1253 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1254 Handle pending_exception; | |
1255 JavaValue result(T_OBJECT); | |
1256 JavaCallArguments args(object); | |
1257 JavaCalls::call(&result, m, &args, THREAD); | |
1258 | |
1259 // done with action, remove ourselves from the list | |
1260 if (!vfst.at_end()) { | |
1261 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1262 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1263 } | |
1264 | |
1265 if (HAS_PENDING_EXCEPTION) { | |
1266 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1267 CLEAR_PENDING_EXCEPTION; | |
1268 | |
1142 | 1269 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1270 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1271 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1272 JavaCallArguments args(pending_exception); | |
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1273 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1274 vmSymbols::exception_void_signature(), |
0 | 1275 &args); |
1276 } | |
1277 } | |
1278 | |
1279 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1280 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1281 JVM_END | |
1282 | |
1283 | |
1284 // Returns the inherited_access_control_context field of the running thread. | |
1285 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1286 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1287 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1288 return JNIHandles::make_local(env, result); | |
1289 JVM_END | |
1290 | |
1291 class RegisterArrayForGC { | |
1292 private: | |
1293 JavaThread *_thread; | |
1294 public: | |
1295 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1296 _thread = thread; | |
1297 _thread->register_array_for_gc(array); | |
1298 } | |
1299 | |
1300 ~RegisterArrayForGC() { | |
1301 _thread->register_array_for_gc(NULL); | |
1302 } | |
1303 }; | |
1304 | |
1305 | |
1306 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1307 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1308 if (!UsePrivilegedStack) return NULL; | |
1309 | |
1310 ResourceMark rm(THREAD); | |
1311 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1312 JvmtiVMObjectAllocEventCollector oam; | |
1313 | |
1314 // count the protection domains on the execution stack. We collapse | |
1315 // duplicate consecutive protection domains into a single one, as | |
1316 // well as stopping when we hit a privileged frame. | |
1317 | |
1318 // Use vframeStream to iterate through Java frames | |
1319 vframeStream vfst(thread); | |
1320 | |
1321 oop previous_protection_domain = NULL; | |
1322 Handle privileged_context(thread, NULL); | |
1323 bool is_privileged = false; | |
1324 oop protection_domain = NULL; | |
1325 | |
1326 for(; !vfst.at_end(); vfst.next()) { | |
1327 // get method of frame | |
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1328 Method* method = vfst.method(); |
0 | 1329 intptr_t* frame_id = vfst.frame_id(); |
1330 | |
1331 // check the privileged frames to see if we have a match | |
1332 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1333 // this frame is privileged | |
1334 is_privileged = true; | |
1335 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1336 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1337 } else { | |
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1338 protection_domain = method->method_holder()->protection_domain(); |
0 | 1339 } |
1340 | |
1341 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1342 local_array->push(protection_domain); | |
1343 previous_protection_domain = protection_domain; | |
1344 } | |
1345 | |
1346 if (is_privileged) break; | |
1347 } | |
1348 | |
1349 | |
1350 // either all the domains on the stack were system domains, or | |
1351 // we had a privileged system domain | |
1352 if (local_array->is_empty()) { | |
1353 if (is_privileged && privileged_context.is_null()) return NULL; | |
1354 | |
1355 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1356 return JNIHandles::make_local(env, result); | |
1357 } | |
1358 | |
1359 // the resource area must be registered in case of a gc | |
1360 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1361 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1362 local_array->length(), CHECK_NULL); |
1363 objArrayHandle h_context(thread, context); | |
1364 for (int index = 0; index < local_array->length(); index++) { | |
1365 h_context->obj_at_put(index, local_array->at(index)); | |
1366 } | |
1367 | |
1368 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1369 | |
1370 return JNIHandles::make_local(env, result); | |
1371 JVM_END | |
1372 | |
1373 | |
1374 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1375 JVMWrapper("JVM_IsArrayClass"); | |
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1376 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1377 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1378 JVM_END |
1379 | |
1380 | |
1381 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1382 JVMWrapper("JVM_IsPrimitiveClass"); | |
1383 oop mirror = JNIHandles::resolve_non_null(cls); | |
1384 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1385 JVM_END | |
1386 | |
1387 | |
1388 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1389 JVMWrapper("JVM_GetComponentType"); | |
1390 oop mirror = JNIHandles::resolve_non_null(cls); | |
1391 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1392 return (jclass) JNIHandles::make_local(env, result); | |
1393 JVM_END | |
1394 | |
1395 | |
1396 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1397 JVMWrapper("JVM_GetClassModifiers"); | |
1398 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1399 // Primitive type | |
1400 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1401 } | |
1402 | |
6983 | 1403 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1404 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1405 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1406 return k->modifier_flags(); | |
1407 JVM_END | |
1408 | |
1409 | |
1410 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1411 | |
1412 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1413 JvmtiVMObjectAllocEventCollector oam; | |
1414 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1415 // of an InstanceKlass |
0 | 1416 |
1417 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1418 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1419 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1420 return (jobjectArray)JNIHandles::make_local(env, result); |
1421 } | |
1422 | |
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1423 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1424 InnerClassesIterator iter(k); |
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1425 |
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1426 if (iter.length() == 0) { |
0 | 1427 // Neither an inner nor outer class |
1142 | 1428 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1429 return (jobjectArray)JNIHandles::make_local(env, result); |
1430 } | |
1431 | |
1432 // find inner class info | |
1433 constantPoolHandle cp(thread, k->constants()); | |
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1434 int length = iter.length(); |
0 | 1435 |
1436 // Allocate temp. result array | |
1142 | 1437 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1438 objArrayHandle result (THREAD, r); |
1439 int members = 0; | |
1440 | |
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1441 for (; !iter.done(); iter.next()) { |
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1442 int ioff = iter.inner_class_info_index(); |
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1443 int ooff = iter.outer_class_info_index(); |
0 | 1444 |
1445 if (ioff != 0 && ooff != 0) { | |
1446 // Check to see if the name matches the class we're looking for | |
1447 // before attempting to find the class. | |
1448 if (cp->klass_name_at_matches(k, ooff)) { | |
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1449 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1450 if (outer_klass == k()) { |
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1451 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1452 instanceKlassHandle inner_klass (THREAD, ik); |
1453 | |
1454 // Throws an exception if outer klass has not declared k as | |
1455 // an inner klass | |
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1456 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1457 |
1458 result->obj_at_put(members, inner_klass->java_mirror()); | |
1459 members++; | |
1460 } | |
1461 } | |
1462 } | |
1463 } | |
1464 | |
1465 if (members != length) { | |
1466 // Return array of right length | |
1142 | 1467 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1468 for(int i = 0; i < members; i++) { |
1469 res->obj_at_put(i, result->obj_at(i)); | |
1470 } | |
1471 return (jobjectArray)JNIHandles::make_local(env, res); | |
1472 } | |
1473 | |
1474 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1475 JVM_END | |
1476 | |
1477 | |
1478 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1479 { |
0 | 1480 // ofClass is a reference to a java_lang_Class object. |
1481 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1482 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1483 return NULL; |
1484 } | |
1485 | |
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1486 bool inner_is_member = false; |
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1487 Klass* outer_klass |
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1488 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1489 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1490 if (outer_klass == NULL) return NULL; // already a top-level class |
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1491 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1492 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1493 } |
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1494 JVM_END |
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1495 |
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1496 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1497 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1498 bool* inner_is_member, |
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1499 TRAPS) { |
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1500 Thread* thread = THREAD; |
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1501 InnerClassesIterator iter(k); |
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1502 if (iter.length() == 0) { |
0 | 1503 // No inner class info => no declaring class |
1504 return NULL; | |
1505 } | |
1506 | |
1507 constantPoolHandle i_cp(thread, k->constants()); | |
1508 | |
1509 bool found = false; | |
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1510 Klass* ok; |
0 | 1511 instanceKlassHandle outer_klass; |
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1512 *inner_is_member = false; |
0 | 1513 |
1514 // Find inner_klass attribute | |
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1515 for (; !iter.done() && !found; iter.next()) { |
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1516 int ioff = iter.inner_class_info_index(); |
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1517 int ooff = iter.outer_class_info_index(); |
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1518 int noff = iter.inner_name_index(); |
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1519 if (ioff != 0) { |
0 | 1520 // Check to see if the name matches the class we're looking for |
1521 // before attempting to find the class. | |
1522 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1523 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1524 found = (k() == inner_klass); |
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1525 if (found && ooff != 0) { |
0 | 1526 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1527 outer_klass = instanceKlassHandle(thread, ok); | |
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1528 *inner_is_member = true; |
0 | 1529 } |
1530 } | |
1531 } | |
1532 } | |
1533 | |
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1534 if (found && outer_klass.is_null()) { |
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1535 // It may be anonymous; try for that. |
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1536 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1537 if (encl_method_class_idx != 0) { |
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1538 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1539 outer_klass = instanceKlassHandle(thread, ok); |
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1540 *inner_is_member = false; |
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1541 } |
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1542 } |
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1543 |
0 | 1544 // If no inner class attribute found for this class. |
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1545 if (outer_klass.is_null()) return NULL; |
0 | 1546 |
1547 // Throws an exception if outer klass has not declared k as an inner klass | |
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1548 // We need evidence that each klass knows about the other, or else |
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1549 // the system could allow a spoof of an inner class to gain access rights. |
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1550 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1551 return outer_klass(); |
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1552 } |
0 | 1553 |
1554 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1555 assert (cls != NULL, "illegal class"); | |
1556 JVMWrapper("JVM_GetClassSignature"); | |
1557 JvmtiVMObjectAllocEventCollector oam; | |
1558 ResourceMark rm(THREAD); | |
1559 // Return null for arrays and primatives | |
1560 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1561 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1562 if (k->oop_is_instance()) { |
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1563 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1564 if (sym == NULL) return NULL; |
0 | 1565 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1566 return (jstring) JNIHandles::make_local(env, str()); | |
1567 } | |
1568 } | |
1569 return NULL; | |
1570 JVM_END | |
1571 | |
1572 | |
1573 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1574 assert (cls != NULL, "illegal class"); | |
1575 JVMWrapper("JVM_GetClassAnnotations"); | |
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1576 |
0 | 1577 // Return null for arrays and primitives |
1578 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1579 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1580 if (k->oop_is_instance()) { |
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1581 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1582 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1583 } |
1584 } | |
1585 return NULL; | |
1586 JVM_END | |
1587 | |
1588 | |
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1589 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1590 // some of this code was adapted from from jni_FromReflectedField |
1591 | |
1592 oop reflected = JNIHandles::resolve_non_null(field); | |
1593 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1594 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1595 int slot = java_lang_reflect_Field::slot(reflected); |
1596 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1597 | |
1598 KlassHandle kh(THREAD, k); | |
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1599 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1600 |
1601 if (modifiers & JVM_ACC_STATIC) { | |
1602 // for static fields we only look in the current class | |
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1603 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1604 assert(false, "cannot find static field"); |
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1605 return false; |
0 | 1606 } |
1607 } else { | |
1608 // for instance fields we start with the current class and work | |
1609 // our way up through the superclass chain | |
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1610 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1611 assert(false, "cannot find instance field"); |
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1612 return false; |
0 | 1613 } |
1614 } | |
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1615 return true; |
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|
1616 } |
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1617 |
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1618 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1619 // field is a handle to a java.lang.reflect.Field object |
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1620 assert(field != NULL, "illegal field"); |
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1621 JVMWrapper("JVM_GetFieldAnnotations"); |
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1622 |
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1623 fieldDescriptor fd; |
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1624 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1625 if (!gotFd) { |
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|
1626 return NULL; |
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|
1627 } |
0 | 1628 |
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1629 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1630 JVM_END |
1631 | |
1632 | |
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1633 static Method* jvm_get_method_common(jobject method) { |
0 | 1634 // some of this code was adapted from from jni_FromReflectedMethod |
1635 | |
1636 oop reflected = JNIHandles::resolve_non_null(method); | |
1637 oop mirror = NULL; | |
1638 int slot = 0; | |
1639 | |
1142 | 1640 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1641 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1642 slot = java_lang_reflect_Constructor::slot(reflected); | |
1643 } else { | |
1142 | 1644 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1645 "wrong type"); |
1646 mirror = java_lang_reflect_Method::clazz(reflected); | |
1647 slot = java_lang_reflect_Method::slot(reflected); | |
1648 } | |
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1649 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1650 |
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1651 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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1652 assert(m != NULL, "cannot find method"); |
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1653 return m; // caller has to deal with NULL in product mode |
0 | 1654 } |
1655 | |
1656 | |
1657 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1658 JVMWrapper("JVM_GetMethodAnnotations"); | |
1659 | |
1660 // method is a handle to a java.lang.reflect.Method object | |
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1661 Method* m = jvm_get_method_common(method); |
8818
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1662 if (m == NULL) { |
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|
1663 return NULL; |
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|
1664 } |
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1665 |
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1666 return (jbyteArray) JNIHandles::make_local(env, |
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1667 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1668 JVM_END |
1669 | |
1670 | |
1671 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1672 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1673 | |
1674 // method is a handle to a java.lang.reflect.Method object | |
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1675 Method* m = jvm_get_method_common(method); |
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1676 if (m == NULL) { |
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|
1677 return NULL; |
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|
1678 } |
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1679 |
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1680 return (jbyteArray) JNIHandles::make_local(env, |
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1681 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1682 JVM_END |
1683 | |
1684 | |
1685 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1686 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1687 | |
1688 // method is a handle to a java.lang.reflect.Method object | |
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1689 Method* m = jvm_get_method_common(method); |
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1690 if (m == NULL) { |
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|
1691 return NULL; |
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|
1692 } |
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|
1693 |
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1694 return (jbyteArray) JNIHandles::make_local(env, |
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1695 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1696 JVM_END |
1697 | |
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1698 /* Type use annotations support (JDK 1.8) */ |
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1699 |
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1700 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1701 assert (cls != NULL, "illegal class"); |
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1702 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1703 ResourceMark rm(THREAD); |
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|
1704 // Return null for arrays and primitives |
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1705 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1706 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1707 if (k->oop_is_instance()) { |
8031 | 1708 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1709 if (type_annotations != NULL) { |
8031 | 1710 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1711 return (jbyteArray) JNIHandles::make_local(env, a); |
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1712 } |
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1713 } |
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1714 } |
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1715 return NULL; |
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1716 JVM_END |
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1717 |
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1718 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1719 assert (method != NULL, "illegal method"); |
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1720 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1721 |
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1722 // method is a handle to a java.lang.reflect.Method object |
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1723 Method* m = jvm_get_method_common(method); |
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1724 if (m == NULL) { |
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|
1725 return NULL; |
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|
1726 } |
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|
1727 |
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1728 AnnotationArray* type_annotations = m->type_annotations(); |
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1729 if (type_annotations != NULL) { |
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1730 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1731 return (jbyteArray) JNIHandles::make_local(env, a); |
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1732 } |
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|
1733 |
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1734 return NULL; |
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|
1735 JVM_END |
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1736 |
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1737 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1738 assert (field != NULL, "illegal field"); |
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changeset
|
1739 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1740 |
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|
1741 fieldDescriptor fd; |
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|
1742 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1743 if (!gotFd) { |
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|
1744 return NULL; |
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|
1745 } |
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|
1746 |
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|
1747 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1748 JVM_END |
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|
1749 |
7588
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1750 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1751 if (!cp->is_within_bounds(index)) { |
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|
1752 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1753 } |
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1754 } |
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1755 |
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1756 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1757 { |
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1758 JVMWrapper("JVM_GetMethodParameters"); |
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1759 // method is a handle to a java.lang.reflect.Method object |
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1760 Method* method_ptr = jvm_get_method_common(method); |
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1761 methodHandle mh (THREAD, method_ptr); |
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1762 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1763 const int num_params = mh->method_parameters_length(); |
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1764 |
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1765 if (0 != num_params) { |
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1766 // make sure all the symbols are properly formatted |
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1767 for (int i = 0; i < num_params; i++) { |
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1768 MethodParametersElement* params = mh->method_parameters_start(); |
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1769 int index = params[i].name_cp_index; |
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1770 bounds_check(mh->constants(), index, CHECK_NULL); |
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1771 |
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1772 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1773 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1774 "Wrong type at constant pool index"); |
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1775 } |
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1776 |
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1777 } |
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1778 |
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1779 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1780 objArrayHandle result (THREAD, result_oop); |
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1781 |
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1782 for (int i = 0; i < num_params; i++) { |
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1783 MethodParametersElement* params = mh->method_parameters_start(); |
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1784 // For a 0 index, give a NULL symbol |
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1785 Symbol* sym = 0 != params[i].name_cp_index ? |
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1786 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1787 int flags = params[i].flags; |
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1788 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1789 flags, CHECK_NULL); |
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1790 result->obj_at_put(i, param); |
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1791 } |
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1792 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1793 } else { |
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1794 return (jobjectArray)NULL; |
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1795 } |
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1796 } |
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1797 JVM_END |
0 | 1798 |
1799 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1800 | |
1801 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1802 { | |
1803 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1804 JvmtiVMObjectAllocEventCollector oam; | |
1805 | |
1806 // Exclude primitive types and array types | |
1807 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1808 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1809 // Return empty array |
1142 | 1810 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1811 return (jobjectArray) JNIHandles::make_local(env, res); |
1812 } | |
1813 | |
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1814 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1815 constantPoolHandle cp(THREAD, k->constants()); |
1816 | |
1817 // Ensure class is linked | |
1818 k->link_class(CHECK_NULL); | |
1819 | |
1820 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1821 bool skip_backtrace = false; | |
1822 | |
1823 // Allocate result | |
1824 int num_fields; | |
1825 | |
1826 if (publicOnly) { | |
1827 num_fields = 0; | |
3938 | 1828 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1829 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1830 } |
1831 } else { | |
3938 | 1832 num_fields = k->java_fields_count(); |
0 | 1833 |
1142 | 1834 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1835 num_fields--; |
1836 skip_backtrace = true; | |
1837 } | |
1838 } | |
1839 | |
1142 | 1840 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1841 objArrayHandle result (THREAD, r); |
1842 | |
1843 int out_idx = 0; | |
1844 fieldDescriptor fd; | |
3938 | 1845 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1846 if (skip_backtrace) { |
1847 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1848 int offset = fs.offset(); |
0 | 1849 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1850 } | |
1851 | |
3938 | 1852 if (!publicOnly || fs.access_flags().is_public()) { |
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1853 fd.reinitialize(k(), fs.index()); |
0 | 1854 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1855 result->obj_at_put(out_idx, field); | |
1856 ++out_idx; | |
1857 } | |
1858 } | |
1859 assert(out_idx == num_fields, "just checking"); | |
1860 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1861 } | |
1862 JVM_END | |
1863 | |
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1864 static bool select_method(methodHandle method, bool want_constructor) { |
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1865 if (want_constructor) { |
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1866 return (method->is_initializer() && !method->is_static()); |
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1867 } else { |
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1868 return (!method->is_initializer() && !method->is_overpass()); |
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1869 } |
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1870 } |
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1871 |
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1872 static jobjectArray get_class_declared_methods_helper( |
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1873 JNIEnv *env, |
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1874 jclass ofClass, jboolean publicOnly, |
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1875 bool want_constructor, |
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1876 Klass* klass, TRAPS) { |
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1877 |
0 | 1878 JvmtiVMObjectAllocEventCollector oam; |
1879 | |
1880 // Exclude primitive types and array types | |
1881 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1882 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1883 // Return empty array |
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1884 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1885 return (jobjectArray) JNIHandles::make_local(env, res); |
1886 } | |
1887 | |
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1888 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1889 |
1890 // Ensure class is linked | |
1891 k->link_class(CHECK_NULL); | |
1892 | |
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1893 Array<Method*>* methods = k->methods(); |
0 | 1894 int methods_length = methods->length(); |
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1895 |
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1896 // Save original method_idnum in case of redefinition, which can change |
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1897 // the idnum of obsolete methods. The new method will have the same idnum |
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1898 // but if we refresh the methods array, the counts will be wrong. |
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1899 ResourceMark rm(THREAD); |
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1900 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1901 int num_methods = 0; |
1902 | |
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1903 for (int i = 0; i < methods_length; i++) { |
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1904 methodHandle method(THREAD, methods->at(i)); |
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1905 if (select_method(method, want_constructor)) { |
0 | 1906 if (!publicOnly || method->is_public()) { |
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1907 idnums->push(method->method_idnum()); |
0 | 1908 ++num_methods; |
1909 } | |
1910 } | |
1911 } | |
1912 | |
1913 // Allocate result | |
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1914 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1915 objArrayHandle result (THREAD, r); |
1916 | |
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1917 // Now just put the methods that we selected above, but go by their idnum |
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1918 // in case of redefinition. The methods can be redefined at any safepoint, |
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1919 // so above when allocating the oop array and below when creating reflect |
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1920 // objects. |
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1921 for (int i = 0; i < num_methods; i++) { |
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1922 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1923 if (method.is_null()) { |
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1924 // Method may have been deleted and seems this API can handle null |
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1925 // Otherwise should probably put a method that throws NSME |
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1926 result->obj_at_put(i, NULL); |
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1927 } else { |
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1928 oop m; |
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1929 if (want_constructor) { |
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1930 m = Reflection::new_constructor(method, CHECK_NULL); |
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1931 } else { |
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1932 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1933 } |
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1934 result->obj_at_put(i, m); |
0 | 1935 } |
1936 } | |
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1937 |
0 | 1938 return (jobjectArray) JNIHandles::make_local(env, result()); |
1939 } | |
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1940 |
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1941 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1942 { |
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1943 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1944 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1945 /*want_constructor*/ false, |
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1946 SystemDictionary::reflect_Method_klass(), THREAD); |
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1947 } |
0 | 1948 JVM_END |
1949 | |
1950 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1951 { | |
1952 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1953 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1954 /*want_constructor*/ true, |
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1955 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1956 } |
1957 JVM_END | |
1958 | |
1959 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1960 { | |
1961 JVMWrapper("JVM_GetClassAccessFlags"); | |
1962 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1963 // Primitive type | |
1964 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1965 } | |
1966 | |
6983 | 1967 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1968 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1969 } | |
1970 JVM_END | |
1971 | |
1972 | |
1973 // Constant pool access ////////////////////////////////////////////////////////// | |
1974 | |
1975 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1976 { | |
1977 JVMWrapper("JVM_GetClassConstantPool"); | |
1978 JvmtiVMObjectAllocEventCollector oam; | |
1979 | |
1980 // Return null for primitives and arrays | |
1981 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1982 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1983 if (k->oop_is_instance()) { |
0 | 1984 instanceKlassHandle k_h(THREAD, k); |
1985 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1986 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1987 return JNIHandles::make_local(jcp()); |
1988 } | |
1989 } | |
1990 return NULL; | |
1991 } | |
1992 JVM_END | |
1993 | |
1994 | |
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1995 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1996 { |
1997 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1998 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1999 return cp->length(); |
2000 } | |
2001 JVM_END | |
2002 | |
2003 | |
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2004 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2005 { |
2006 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2007 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2008 bounds_check(cp, index, CHECK_NULL); |
2009 constantTag tag = cp->tag_at(index); | |
2010 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2011 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2012 } | |
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2013 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2014 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2015 } |
2016 JVM_END | |
2017 | |
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2018 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2019 { |
2020 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2021 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2022 bounds_check(cp, index, CHECK_NULL); |
2023 constantTag tag = cp->tag_at(index); | |
2024 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2025 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2026 } | |
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2027 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2028 if (k == NULL) return NULL; |
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2029 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2030 } |
2031 JVM_END | |
2032 | |
2033 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2034 constantTag tag = cp->tag_at(index); | |
2035 if (!tag.is_method() && !tag.is_interface_method()) { | |
2036 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2037 } | |
2038 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2039 Klass* k_o; |
0 | 2040 if (force_resolution) { |
2041 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2042 } else { | |
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2043 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2044 if (k_o == NULL) return NULL; |
2045 } | |
2046 instanceKlassHandle k(THREAD, k_o); | |
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2047 Symbol* name = cp->uncached_name_ref_at(index); |
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2048 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2049 methodHandle m (THREAD, k->find_method(name, sig)); |
2050 if (m.is_null()) { | |
2051 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2052 } | |
2053 oop method; | |
2054 if (!m->is_initializer() || m->is_static()) { | |
2055 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2056 } else { | |
2057 method = Reflection::new_constructor(m, CHECK_NULL); | |
2058 } | |
2059 return JNIHandles::make_local(method); | |
2060 } | |
2061 | |
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2062 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2063 { |
2064 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2065 JvmtiVMObjectAllocEventCollector oam; | |
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2066 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2067 bounds_check(cp, index, CHECK_NULL); |
2068 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2069 return res; | |
2070 } | |
2071 JVM_END | |
2072 | |
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2073 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2074 { |
2075 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2076 JvmtiVMObjectAllocEventCollector oam; | |
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2077 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2078 bounds_check(cp, index, CHECK_NULL); |
2079 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2080 return res; | |
2081 } | |
2082 JVM_END | |
2083 | |
2084 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2085 constantTag tag = cp->tag_at(index); | |
2086 if (!tag.is_field()) { | |
2087 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2088 } | |
2089 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2090 Klass* k_o; |
0 | 2091 if (force_resolution) { |
2092 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2093 } else { | |
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2094 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2095 if (k_o == NULL) return NULL; |
2096 } | |
2097 instanceKlassHandle k(THREAD, k_o); | |
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2098 Symbol* name = cp->uncached_name_ref_at(index); |
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2099 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2100 fieldDescriptor fd; |
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2101 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2102 if (target_klass == NULL) { |
2103 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2104 } | |
2105 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2106 return JNIHandles::make_local(field); | |
2107 } | |
2108 | |
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2109 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2110 { |
2111 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2112 JvmtiVMObjectAllocEventCollector oam; | |
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2113 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2114 bounds_check(cp, index, CHECK_NULL); |
2115 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2116 return res; | |
2117 } | |
2118 JVM_END | |
2119 | |
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2120 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2121 { |
2122 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2123 JvmtiVMObjectAllocEventCollector oam; | |
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2124 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2125 bounds_check(cp, index, CHECK_NULL); |
2126 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2127 return res; | |
2128 } | |
2129 JVM_END | |
2130 | |
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2131 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2132 { |
2133 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2134 JvmtiVMObjectAllocEventCollector oam; | |
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2135 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2136 bounds_check(cp, index, CHECK_NULL); |
2137 constantTag tag = cp->tag_at(index); | |
2138 if (!tag.is_field_or_method()) { | |
2139 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2140 } | |
2141 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2142 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2143 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2144 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2145 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2146 objArrayHandle dest(THREAD, dest_o); |
2147 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2148 dest->obj_at_put(0, str()); | |
2149 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2150 dest->obj_at_put(1, str()); | |
2151 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2152 dest->obj_at_put(2, str()); | |
2153 return (jobjectArray) JNIHandles::make_local(dest()); | |
2154 } | |
2155 JVM_END | |
2156 | |
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2157 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2158 { |
2159 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2160 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2161 bounds_check(cp, index, CHECK_0); |
2162 constantTag tag = cp->tag_at(index); | |
2163 if (!tag.is_int()) { | |
2164 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2165 } | |
2166 return cp->int_at(index); | |
2167 } | |
2168 JVM_END | |
2169 | |
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2170 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2171 { |
2172 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2173 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2174 bounds_check(cp, index, CHECK_(0L)); |
2175 constantTag tag = cp->tag_at(index); | |
2176 if (!tag.is_long()) { | |
2177 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2178 } | |
2179 return cp->long_at(index); | |
2180 } | |
2181 JVM_END | |
2182 | |
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2183 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2184 { |
2185 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2186 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2187 bounds_check(cp, index, CHECK_(0.0f)); |
2188 constantTag tag = cp->tag_at(index); | |
2189 if (!tag.is_float()) { | |
2190 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2191 } | |
2192 return cp->float_at(index); | |
2193 } | |
2194 JVM_END | |
2195 | |
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2196 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2197 { |
2198 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2199 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2200 bounds_check(cp, index, CHECK_(0.0)); |
2201 constantTag tag = cp->tag_at(index); | |
2202 if (!tag.is_double()) { | |
2203 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2204 } | |
2205 return cp->double_at(index); | |
2206 } | |
2207 JVM_END | |
2208 | |
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2209 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2210 { |
2211 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2212 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2213 bounds_check(cp, index, CHECK_NULL); |
2214 constantTag tag = cp->tag_at(index); | |
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2215 if (!tag.is_string()) { |
0 | 2216 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2217 } | |
2218 oop str = cp->string_at(index, CHECK_NULL); | |
2219 return (jstring) JNIHandles::make_local(str); | |
2220 } | |
2221 JVM_END | |
2222 | |
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2223 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2224 { |
2225 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2226 JvmtiVMObjectAllocEventCollector oam; | |
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2227 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2228 bounds_check(cp, index, CHECK_NULL); |
2229 constantTag tag = cp->tag_at(index); | |
2230 if (!tag.is_symbol()) { | |
2231 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2232 } | |
2177
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2233 Symbol* sym = cp->symbol_at(index); |
0 | 2234 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2235 return (jstring) JNIHandles::make_local(str()); | |
2236 } | |
2237 JVM_END | |
2238 | |
2239 | |
2240 // Assertion support. ////////////////////////////////////////////////////////// | |
2241 | |
2242 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2243 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2244 assert(cls != NULL, "bad class"); | |
2245 | |
2246 oop r = JNIHandles::resolve(cls); | |
2247 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2248 if (java_lang_Class::is_primitive(r)) return false; | |
2249 | |
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2250 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2251 assert(k->oop_is_instance(), "must be an instance klass"); |
2252 if (! k->oop_is_instance()) return false; | |
0 | 2253 |
2254 ResourceMark rm(THREAD); | |
6983 | 2255 const char* name = k->name()->as_C_string(); |
2256 bool system_class = k->class_loader() == NULL; | |
0 | 2257 return JavaAssertions::enabled(name, system_class); |
2258 | |
2259 JVM_END | |
2260 | |
2261 | |
2262 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2263 // command-line assertion arguments (i.e., -ea, -da). | |
2264 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2265 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2266 JvmtiVMObjectAllocEventCollector oam; | |
2267 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2268 return JNIHandles::make_local(env, asd); | |
2269 JVM_END | |
2270 | |
2271 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2272 | |
2273 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2274 | |
2275 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2276 // All functions from this section should call the jvmtiThreadSate function: | |
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2277 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2278 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2279 // was invoked in the middle of the class redefinition. |
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2280 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2281 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2282 | |
2283 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2284 JVMWrapper("JVM_GetClassNameUTF"); | |
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2285 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2286 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2287 return k->name()->as_utf8(); |
0 | 2288 JVM_END |
2289 | |
2290 | |
2291 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2292 JVMWrapper("JVM_GetClassCPTypes"); | |
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2293 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2294 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2295 // types will have length zero if this is not an InstanceKlass |
0 | 2296 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2297 if (k->oop_is_instance()) { |
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2298 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2299 for (int index = cp->length() - 1; index >= 0; index--) { |
2300 constantTag tag = cp->tag_at(index); | |
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2301 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2302 } |
2303 } | |
2304 JVM_END | |
2305 | |
2306 | |
2307 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2308 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2309 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2310 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2311 if (!k->oop_is_instance()) |
0 | 2312 return 0; |
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2313 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2314 JVM_END |
2315 | |
2316 | |
2317 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2318 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2319 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2320 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2321 if (!k->oop_is_instance()) |
0 | 2322 return 0; |
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2323 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2324 JVM_END |
2325 | |
2326 | |
2327 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2328 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2329 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2330 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2331 if (!k->oop_is_instance()) |
0 | 2332 return 0; |
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2333 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2334 JVM_END |
2335 | |
2336 | |
2337 // The following methods, used for the verifier, are never called with | |
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2338 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2339 // Typically, these methods are called in a loop with bounds determined |
2340 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2341 // zero for arrays. | |
2342 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2343 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2344 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2345 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2346 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2347 int length = method->checked_exceptions_length(); |
0 | 2348 if (length > 0) { |
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2349 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2350 for (int i = 0; i < length; i++) { |
2351 exceptions[i] = table[i].class_cp_index; | |
2352 } | |
2353 } | |
2354 JVM_END | |
2355 | |
2356 | |
2357 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2358 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2359 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2360 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2361 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2362 return method->checked_exceptions_length(); |
0 | 2363 JVM_END |
2364 | |
2365 | |
2366 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2367 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2368 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2369 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2370 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2371 memcpy(code, method->code_base(), method->code_size()); |
0 | 2372 JVM_END |
2373 | |
2374 | |
2375 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2376 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2377 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2378 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2379 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2380 return method->code_size(); |
0 | 2381 JVM_END |
2382 | |
2383 | |
2384 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2385 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2386 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2387 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2388 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2389 ExceptionTable extable(method); |
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2390 entry->start_pc = extable.start_pc(entry_index); |
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2391 entry->end_pc = extable.end_pc(entry_index); |
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2392 entry->handler_pc = extable.handler_pc(entry_index); |
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2393 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2394 JVM_END |
2395 | |
2396 | |
2397 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2398 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2399 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2400 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2401 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2402 return method->exception_table_length(); |
0 | 2403 JVM_END |
2404 | |
2405 | |
2406 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2407 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2408 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2409 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2410 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2411 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2412 JVM_END |
2413 | |
2414 | |
2415 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2416 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2417 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2418 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2419 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2420 JVM_END |
2421 | |
2422 | |
2423 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2424 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2425 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2426 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2427 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2428 return method->max_locals(); |
0 | 2429 JVM_END |
2430 | |
2431 | |
2432 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2433 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2434 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2435 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2436 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2437 return method->size_of_parameters(); |
0 | 2438 JVM_END |
2439 | |
2440 | |
2441 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2442 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2443 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2444 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2445 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2446 return method->verifier_max_stack(); |
0 | 2447 JVM_END |
2448 | |
2449 | |
2450 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2451 JVMWrapper("JVM_IsConstructorIx"); | |
2452 ResourceMark rm(THREAD); | |
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2453 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2454 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2455 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2456 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2457 JVM_END |
2458 | |
2459 | |
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2460 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2461 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2462 ResourceMark rm(THREAD); |
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2463 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2464 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2465 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2466 return method->is_overpass(); |
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|
2467 JVM_END |
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|
2468 |
0 | 2469 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2470 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2471 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2472 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2473 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2474 return method->name()->as_utf8(); |
0 | 2475 JVM_END |
2476 | |
2477 | |
2478 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2479 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2480 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2481 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2482 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2483 return method->signature()->as_utf8(); |
0 | 2484 JVM_END |
2485 | |
2486 /** | |
2487 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2488 * read entries in the constant pool. Since the old verifier always | |
2489 * works on a copy of the code, it will not see any rewriting that | |
2490 * may possibly occur in the middle of verification. So it is important | |
2491 * that nothing it calls tries to use the cpCache instead of the raw | |
2492 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2493 */ | |
2494 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2495 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2496 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2497 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2498 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2499 switch (cp->tag_at(cp_index).value()) { |
2500 case JVM_CONSTANT_Fieldref: | |
2501 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2502 default: | |
2503 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2504 } | |
2505 ShouldNotReachHere(); | |
2506 return NULL; | |
2507 JVM_END | |
2508 | |
2509 | |
2510 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2511 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2512 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2513 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2514 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2515 switch (cp->tag_at(cp_index).value()) { |
2516 case JVM_CONSTANT_InterfaceMethodref: | |
2517 case JVM_CONSTANT_Methodref: | |
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|
2518 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2519 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2520 default: | |
2521 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2522 } | |
2523 ShouldNotReachHere(); | |
2524 return NULL; | |
2525 JVM_END | |
2526 | |
2527 | |
2528 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2529 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2530 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2531 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2532 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2533 switch (cp->tag_at(cp_index).value()) { |
2534 case JVM_CONSTANT_InterfaceMethodref: | |
2535 case JVM_CONSTANT_Methodref: | |
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|
2536 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2537 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2538 default: | |
2539 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2540 } | |
2541 ShouldNotReachHere(); | |
2542 return NULL; | |
2543 JVM_END | |
2544 | |
2545 | |
2546 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2547 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2548 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2549 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2550 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2551 switch (cp->tag_at(cp_index).value()) { |
2552 case JVM_CONSTANT_Fieldref: | |
2553 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2554 default: | |
2555 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2556 } | |
2557 ShouldNotReachHere(); | |
2558 return NULL; | |
2559 JVM_END | |
2560 | |
2561 | |
2562 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2563 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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|
2564 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2565 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2566 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2567 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2568 return classname->as_utf8(); |
2569 JVM_END | |
2570 | |
2571 | |
2572 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2573 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2574 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2575 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2576 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2577 switch (cp->tag_at(cp_index).value()) { |
2578 case JVM_CONSTANT_Fieldref: { | |
2579 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2580 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2581 return classname->as_utf8(); |
2582 } | |
2583 default: | |
2584 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2585 } | |
2586 ShouldNotReachHere(); | |
2587 return NULL; | |
2588 JVM_END | |
2589 | |
2590 | |
2591 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2592 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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|
2593 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2594 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2595 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2596 switch (cp->tag_at(cp_index).value()) { |
2597 case JVM_CONSTANT_Methodref: | |
2598 case JVM_CONSTANT_InterfaceMethodref: { | |
2599 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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diff
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|
2600 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2601 return classname->as_utf8(); |
2602 } | |
2603 default: | |
2604 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2605 } | |
2606 ShouldNotReachHere(); | |
2607 return NULL; | |
2608 JVM_END | |
2609 | |
2610 | |
3938 | 2611 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2612 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2613 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2614 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2615 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2616 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2617 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2618 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2619 switch (cp->tag_at(cp_index).value()) { |
2620 case JVM_CONSTANT_Fieldref: { | |
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|
2621 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2622 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2623 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2624 if (fs.name() == name && fs.signature() == signature) { | |
2625 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2626 } |
2627 } | |
2628 return -1; | |
2629 } | |
2630 default: | |
2631 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2632 } | |
2633 ShouldNotReachHere(); | |
2634 return 0; | |
2635 JVM_END | |
2636 | |
2637 | |
2638 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2639 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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|
2640 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2641 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2642 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2643 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2644 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2645 switch (cp->tag_at(cp_index).value()) { |
2646 case JVM_CONSTANT_Methodref: | |
2647 case JVM_CONSTANT_InterfaceMethodref: { | |
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|
2648 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2649 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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|
2650 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2651 int methods_count = methods->length(); |
2652 for (int i = 0; i < methods_count; i++) { | |
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|
2653 Method* method = methods->at(i); |
0 | 2654 if (method->name() == name && method->signature() == signature) { |
2655 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2656 } | |
2657 } | |
2658 return -1; | |
2659 } | |
2660 default: | |
2661 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2662 } | |
2663 ShouldNotReachHere(); | |
2664 return 0; | |
2665 JVM_END | |
2666 | |
2667 | |
2668 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2669 | |
2670 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2671 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2672 JVM_END | |
2673 | |
2674 | |
2675 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2676 JVMWrapper("JVM_IsSameClassPackage"); | |
2677 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2678 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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|
2679 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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|
2680 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2681 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2682 JVM_END | |
2683 | |
2684 | |
2685 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2686 | |
2687 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2688 JVMWrapper2("JVM_Open (%s)", fname); | |
2689 | |
2690 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2691 int result = os::open(fname, flags, mode); |
0 | 2692 if (result >= 0) { |
2693 return result; | |
2694 } else { | |
2695 switch(errno) { | |
2696 case EEXIST: | |
2697 return JVM_EEXIST; | |
2698 default: | |
2699 return -1; | |
2700 } | |
2701 } | |
2702 JVM_END | |
2703 | |
2704 | |
2705 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2706 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2707 //%note jvm_r6 | |
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diff
changeset
|
2708 return os::close(fd); |
0 | 2709 JVM_END |
2710 | |
2711 | |
2712 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2713 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2714 | |
2715 //%note jvm_r6 | |
1980
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diff
changeset
|
2716 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2717 JVM_END |
2718 | |
2719 | |
2720 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2721 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2722 | |
2723 //%note jvm_r6 | |
1980
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changeset
|
2724 return (jint)os::write(fd, buf, nbytes); |
0 | 2725 JVM_END |
2726 | |
2727 | |
2728 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2729 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2730 //%note jvm_r6 | |
1980
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ikrylov
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diff
changeset
|
2731 return os::available(fd, pbytes); |
0 | 2732 JVM_END |
2733 | |
2734 | |
2735 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
17937
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|
2736 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
0 | 2737 //%note jvm_r6 |
1980
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2738 return os::lseek(fd, offset, whence); |
0 | 2739 JVM_END |
2740 | |
2741 | |
2742 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
17937
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changeset
|
2743 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2744 return os::ftruncate(fd, length); |
0 | 2745 JVM_END |
2746 | |
2747 | |
2748 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2749 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2750 //%note jvm_r6 | |
1980
828eafbd85cc
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ikrylov
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diff
changeset
|
2751 return os::fsync(fd); |
0 | 2752 JVM_END |
2753 | |
2754 | |
2755 // Printing support ////////////////////////////////////////////////// | |
2756 extern "C" { | |
2757 | |
17937
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drchase
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changeset
|
2758 ATTRIBUTE_PRINTF(3, 0) |
0 | 2759 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
2760 // see bug 4399518, 4417214 | |
2761 if ((intptr_t)count <= 0) return -1; | |
2762 return vsnprintf(str, count, fmt, args); | |
2763 } | |
2764 | |
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2765 ATTRIBUTE_PRINTF(3, 0) |
0 | 2766 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
2767 va_list args; | |
2768 int len; | |
2769 va_start(args, fmt); | |
2770 len = jio_vsnprintf(str, count, fmt, args); | |
2771 va_end(args); | |
2772 return len; | |
2773 } | |
2774 | |
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|
2775 ATTRIBUTE_PRINTF(2,3) |
0 | 2776 int jio_fprintf(FILE* f, const char *fmt, ...) { |
2777 int len; | |
2778 va_list args; | |
2779 va_start(args, fmt); | |
2780 len = jio_vfprintf(f, fmt, args); | |
2781 va_end(args); | |
2782 return len; | |
2783 } | |
2784 | |
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|
2785 ATTRIBUTE_PRINTF(2, 0) |
0 | 2786 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
2787 if (Arguments::vfprintf_hook() != NULL) { | |
2788 return Arguments::vfprintf_hook()(f, fmt, args); | |
2789 } else { | |
2790 return vfprintf(f, fmt, args); | |
2791 } | |
2792 } | |
2793 | |
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|
2794 ATTRIBUTE_PRINTF(1, 2) |
2191 | 2795 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2796 int len; |
2797 va_list args; | |
2798 va_start(args, fmt); | |
2799 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2800 va_end(args); | |
2801 return len; | |
2802 } | |
2803 | |
2804 | |
2805 // HotSpot specific jio method | |
2806 void jio_print(const char* s) { | |
2807 // Try to make this function as atomic as possible. | |
2808 if (Arguments::vfprintf_hook() != NULL) { | |
2809 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2810 } else { | |
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|
2811 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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|
2812 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2813 } |
2814 } | |
2815 | |
2816 } // Extern C | |
2817 | |
2818 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2819 | |
2820 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2821 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2822 // OSThread objects. The exception to this rule is when the target object is the thread | |
2823 // doing the operation, in which case we know that the thread won't exit until the | |
2824 // operation is done (all exits being voluntary). There are a few cases where it is | |
2825 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2826 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2827 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2828 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2829 // implementation is local to this file, we always lock Threads_lock for that one. | |
2830 | |
2831 static void thread_entry(JavaThread* thread, TRAPS) { | |
2832 HandleMark hm(THREAD); | |
2833 Handle obj(THREAD, thread->threadObj()); | |
2834 JavaValue result(T_VOID); | |
2835 JavaCalls::call_virtual(&result, | |
2836 obj, | |
1142 | 2837 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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|
2838 vmSymbols::run_method_name(), |
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|
2839 vmSymbols::void_method_signature(), |
0 | 2840 THREAD); |
2841 } | |
2842 | |
2843 | |
2844 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2845 JVMWrapper("JVM_StartThread"); | |
2846 JavaThread *native_thread = NULL; | |
2847 | |
2848 // We cannot hold the Threads_lock when we throw an exception, | |
2849 // due to rank ordering issues. Example: we might need to grab the | |
2850 // Heap_lock while we construct the exception. | |
2851 bool throw_illegal_thread_state = false; | |
2852 | |
2853 // We must release the Threads_lock before we can post a jvmti event | |
2854 // in Thread::start. | |
2855 { | |
2856 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2857 // we operate. | |
2858 MutexLocker mu(Threads_lock); | |
2859 | |
2162
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|
2860 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
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2861 // re-starting an already started thread, so we should usually find |
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|
2862 // that the JavaThread is null. However for a JNI attached thread |
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|
2863 // there is a small window between the Thread object being created |
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|
2864 // (with its JavaThread set) and the update to its threadStatus, so we |
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|
2865 // have to check for this |
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|
2866 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
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|
2867 throw_illegal_thread_state = true; |
0 | 2868 } else { |
2162
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|
2869 // We could also check the stillborn flag to see if this thread was already stopped, but |
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|
2870 // for historical reasons we let the thread detect that itself when it starts running |
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|
2871 |
0 | 2872 jlong size = |
2873 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2874 // Allocate the C++ Thread structure and create the native thread. The | |
2875 // stack size retrieved from java is signed, but the constructor takes | |
2876 // size_t (an unsigned type), so avoid passing negative values which would | |
2877 // result in really large stacks. | |
2878 size_t sz = size > 0 ? (size_t) size : 0; | |
2879 native_thread = new JavaThread(&thread_entry, sz); | |
2880 | |
2881 // At this point it may be possible that no osthread was created for the | |
2882 // JavaThread due to lack of memory. Check for this situation and throw | |
2883 // an exception if necessary. Eventually we may want to change this so | |
2884 // that we only grab the lock if the thread was created successfully - | |
2885 // then we can also do this check and throw the exception in the | |
2886 // JavaThread constructor. | |
2887 if (native_thread->osthread() != NULL) { | |
2888 // Note: the current thread is not being used within "prepare". | |
2889 native_thread->prepare(jthread); | |
2890 } | |
2891 } | |
2892 } | |
2893 | |
2894 if (throw_illegal_thread_state) { | |
2895 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2896 } | |
2897 | |
2898 assert(native_thread != NULL, "Starting null thread?"); | |
2899 | |
2900 if (native_thread->osthread() == NULL) { | |
2901 // No one should hold a reference to the 'native_thread'. | |
2902 delete native_thread; | |
2903 if (JvmtiExport::should_post_resource_exhausted()) { | |
2904 JvmtiExport::post_resource_exhausted( | |
2905 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2906 "unable to create new native thread"); | |
2907 } | |
2908 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2909 "unable to create new native thread"); | |
2910 } | |
2911 | |
2912 Thread::start(native_thread); | |
2913 | |
2914 JVM_END | |
2915 | |
2916 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2917 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2918 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
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|
2919 // same thread as the sender, no safepoint is needed. |
0 | 2920 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2921 JVMWrapper("JVM_StopThread"); | |
2922 | |
2923 oop java_throwable = JNIHandles::resolve(throwable); | |
2924 if (java_throwable == NULL) { | |
2925 THROW(vmSymbols::java_lang_NullPointerException()); | |
2926 } | |
2927 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2928 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
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4717
diff
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|
2929 Events::log_exception(JavaThread::current(), |
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|
2930 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
17937
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|
2931 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
2162
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|
2932 // First check if thread is alive |
0 | 2933 if (receiver != NULL) { |
2934 // Check if exception is getting thrown at self (use oop equality, since the | |
2935 // target object might exit) | |
2936 if (java_thread == thread->threadObj()) { | |
2937 THROW_OOP(java_throwable); | |
2938 } else { | |
2939 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2940 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2941 } | |
2942 } | |
2162
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|
2943 else { |
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changeset
|
2944 // Either: |
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changeset
|
2945 // - target thread has not been started before being stopped, or |
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diff
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|
2946 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2947 // We could read the threadStatus to determine which case it is |
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diff
changeset
|
2948 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
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diff
changeset
|
2949 // stillborn flag for the first case, and if the thread has already |
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diff
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|
2950 // exited setting this flag has no affect |
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diff
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|
2951 java_lang_Thread::set_stillborn(java_thread); |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2952 } |
0 | 2953 JVM_END |
2954 | |
2955 | |
2956 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2957 JVMWrapper("JVM_IsThreadAlive"); | |
2958 | |
2959 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2960 return java_lang_Thread::is_alive(thread_oop); | |
2961 JVM_END | |
2962 | |
2963 | |
2964 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2965 JVMWrapper("JVM_SuspendThread"); | |
2966 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2967 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2968 | |
2969 if (receiver != NULL) { | |
2970 // thread has run and has not exited (still on threads list) | |
2971 | |
2972 { | |
2973 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2974 if (receiver->is_external_suspend()) { | |
2975 // Don't allow nested external suspend requests. We can't return | |
2976 // an error from this interface so just ignore the problem. | |
2977 return; | |
2978 } | |
2979 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2980 return; | |
2981 } | |
2982 receiver->set_external_suspend(); | |
2983 } | |
2984 | |
2985 // java_suspend() will catch threads in the process of exiting | |
2986 // and will ignore them. | |
2987 receiver->java_suspend(); | |
2988 | |
2989 // It would be nice to have the following assertion in all the | |
2990 // time, but it is possible for a racing resume request to have | |
2991 // resumed this thread right after we suspended it. Temporarily | |
2992 // enable this assertion if you are chasing a different kind of | |
2993 // bug. | |
2994 // | |
2995 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2996 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2997 } | |
2998 JVM_END | |
2999 | |
3000 | |
3001 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3002 JVMWrapper("JVM_ResumeThread"); | |
3003 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3004 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3005 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3006 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3007 // looks at it. | |
3008 MutexLocker ml(Threads_lock); | |
3009 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3010 if (thr != NULL) { | |
3011 // the thread has run and is not in the process of exiting | |
3012 thr->java_resume(); | |
3013 } | |
3014 JVM_END | |
3015 | |
3016 | |
3017 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3018 JVMWrapper("JVM_SetThreadPriority"); | |
3019 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3020 MutexLocker ml(Threads_lock); | |
3021 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3022 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3023 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3024 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3025 Thread::set_priority(thr, (ThreadPriority)prio); | |
3026 } | |
3027 JVM_END | |
3028 | |
3029 | |
3030 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3031 JVMWrapper("JVM_Yield"); | |
3032 if (os::dont_yield()) return; | |
4006 | 3033 #ifndef USDT2 |
1324
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1144
diff
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|
3034 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3035 #else /* USDT2 */ |
3036 HOTSPOT_THREAD_YIELD(); | |
3037 #endif /* USDT2 */ | |
0 | 3038 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3039 // Critical for similar threading behaviour | |
3040 if (ConvertYieldToSleep) { | |
3041 os::sleep(thread, MinSleepInterval, false); | |
3042 } else { | |
3043 os::yield(); | |
3044 } | |
3045 JVM_END | |
3046 | |
3047 | |
3048 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3049 JVMWrapper("JVM_Sleep"); | |
3050 | |
3051 if (millis < 0) { | |
3052 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3053 } | |
3054 | |
3055 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3056 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3057 } | |
3058 | |
3059 // Save current thread state and restore it at the end of this block. | |
3060 // And set new thread state to SLEEPING. | |
3061 JavaThreadSleepState jtss(thread); | |
3062 | |
4006 | 3063 #ifndef USDT2 |
1324
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diff
changeset
|
3064 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3065 #else /* USDT2 */ |
3066 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3067 millis); | |
3068 #endif /* USDT2 */ | |
1324
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|
3069 |
10405 | 3070 EventThreadSleep event; |
3071 | |
0 | 3072 if (millis == 0) { |
3073 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3074 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3075 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3076 // for SOLARIS | |
3077 if (ConvertSleepToYield) { | |
3078 os::yield(); | |
3079 } else { | |
3080 ThreadState old_state = thread->osthread()->get_state(); | |
3081 thread->osthread()->set_state(SLEEPING); | |
3082 os::sleep(thread, MinSleepInterval, false); | |
3083 thread->osthread()->set_state(old_state); | |
3084 } | |
3085 } else { | |
3086 ThreadState old_state = thread->osthread()->get_state(); | |
3087 thread->osthread()->set_state(SLEEPING); | |
3088 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3089 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3090 // us while we were sleeping. We do not overwrite those. | |
3091 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3092 if (event.should_commit()) { |
3093 event.set_time(millis); | |
3094 event.commit(); | |
3095 } | |
4006 | 3096 #ifndef USDT2 |
1324
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1144
diff
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|
3097 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3098 #else /* USDT2 */ |
3099 HOTSPOT_THREAD_SLEEP_END( | |
3100 1); | |
3101 #endif /* USDT2 */ | |
0 | 3102 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3103 // to properly restore the thread state. That's likely wrong. | |
3104 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3105 } | |
3106 } | |
3107 thread->osthread()->set_state(old_state); | |
3108 } | |
10405 | 3109 if (event.should_commit()) { |
3110 event.set_time(millis); | |
3111 event.commit(); | |
3112 } | |
4006 | 3113 #ifndef USDT2 |
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|
3114 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3115 #else /* USDT2 */ |
3116 HOTSPOT_THREAD_SLEEP_END( | |
3117 0); | |
3118 #endif /* USDT2 */ | |
0 | 3119 JVM_END |
3120 | |
3121 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3122 JVMWrapper("JVM_CurrentThread"); | |
3123 oop jthread = thread->threadObj(); | |
3124 assert (thread != NULL, "no current thread!"); | |
3125 return JNIHandles::make_local(env, jthread); | |
3126 JVM_END | |
3127 | |
3128 | |
3129 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3130 JVMWrapper("JVM_CountStackFrames"); | |
3131 | |
3132 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3133 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3134 bool throw_illegal_thread_state = false; | |
3135 int count = 0; | |
3136 | |
3137 { | |
3138 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3139 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3140 // acquire of the lock | |
3141 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3142 | |
3143 if (thr == NULL) { | |
3144 // do nothing | |
3145 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3146 // Check whether this java thread has been suspended already. If not, throws | |
3147 // IllegalThreadStateException. We defer to throw that exception until | |
3148 // Threads_lock is released since loading exception class has to leave VM. | |
3149 // The correct way to test a thread is actually suspended is | |
3150 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3151 // the Threads_lock. The above tests are sufficient for our purposes | |
3152 // provided the walkability of the stack is stable - which it isn't | |
3153 // 100% but close enough for most practical purposes. | |
3154 throw_illegal_thread_state = true; | |
3155 } else { | |
3156 // Count all java activation, i.e., number of vframes | |
3157 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3158 // Native frames are not counted | |
3159 if (!vfst.method()->is_native()) count++; | |
3160 } | |
3161 } | |
3162 } | |
3163 | |
3164 if (throw_illegal_thread_state) { | |
3165 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3166 "this thread is not suspended"); | |
3167 } | |
3168 return count; | |
3169 JVM_END | |
3170 | |
3171 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3172 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3173 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3174 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3175 // outside the critical section. Threads_lock is hot so we want to minimize | |
3176 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3177 // two steps. The 1st phase, performed under Threads_lock, would return | |
3178 // a closure that'd be invoked after Threads_lock was dropped. | |
3179 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3180 // admit spurious wakeups. | |
3181 | |
3182 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3183 JVMWrapper("JVM_Interrupt"); | |
3184 | |
3185 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3186 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3187 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3188 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3189 // acquire of the lock | |
3190 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3191 if (thr != NULL) { | |
3192 Thread::interrupt(thr); | |
3193 } | |
3194 JVM_END | |
3195 | |
3196 | |
3197 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3198 JVMWrapper("JVM_IsInterrupted"); | |
3199 | |
3200 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3201 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3202 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3203 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3204 // acquire of the lock | |
3205 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3206 if (thr == NULL) { | |
3207 return JNI_FALSE; | |
3208 } else { | |
3209 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3210 } | |
3211 JVM_END | |
3212 | |
3213 | |
3214 // Return true iff the current thread has locked the object passed in | |
3215 | |
3216 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3217 JVMWrapper("JVM_HoldsLock"); | |
3218 assert(THREAD->is_Java_thread(), "sanity check"); | |
3219 if (obj == NULL) { | |
3220 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3221 } | |
3222 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3223 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3224 JVM_END | |
3225 | |
3226 | |
3227 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3228 JVMWrapper("JVM_DumpAllStacks"); | |
3229 VM_PrintThreads op; | |
3230 VMThread::execute(&op); | |
3231 if (JvmtiExport::should_post_data_dump()) { | |
3232 JvmtiExport::post_data_dump(); | |
3233 } | |
3234 JVM_END | |
3235 | |
4006 | 3236 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3237 JVMWrapper("JVM_SetNativeThreadName"); | |
3238 ResourceMark rm(THREAD); | |
3239 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3240 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3241 // Thread naming only supported for the current thread, doesn't work for | |
3242 // target threads. | |
3243 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3244 // we don't set the name of an attached thread to avoid stepping | |
3245 // on other programs | |
3246 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3247 os::set_native_thread_name(thread_name); | |
3248 } | |
3249 JVM_END | |
0 | 3250 |
3251 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3252 | |
3253 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3254 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3255 if (jthread->privileged_stack_top() == NULL) return false; | |
3256 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3257 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3258 if (loader == NULL) return true; | |
3259 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3260 if (trusted) return true; | |
3261 } | |
3262 return false; | |
3263 } | |
3264 | |
3265 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3266 JVMWrapper("JVM_CurrentLoadedClass"); | |
3267 ResourceMark rm(THREAD); | |
3268 | |
3269 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3270 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3271 bool trusted = is_trusted_frame(thread, &vfst); | |
3272 if (trusted) return NULL; | |
3273 | |
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3274 Method* m = vfst.method(); |
0 | 3275 if (!m->is_native()) { |
6940
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3276 InstanceKlass* holder = m->method_holder(); |
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|
3277 oop loader = holder->class_loader(); |
0 | 3278 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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|
3279 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3280 } |
3281 } | |
3282 } | |
3283 return NULL; | |
3284 JVM_END | |
3285 | |
3286 | |
3287 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3288 JVMWrapper("JVM_CurrentClassLoader"); | |
3289 ResourceMark rm(THREAD); | |
3290 | |
3291 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3292 | |
3293 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3294 bool trusted = is_trusted_frame(thread, &vfst); | |
3295 if (trusted) return NULL; | |
3296 | |
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3297 Method* m = vfst.method(); |
0 | 3298 if (!m->is_native()) { |
6940
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3299 InstanceKlass* holder = m->method_holder(); |
0 | 3300 assert(holder->is_klass(), "just checking"); |
6940
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3301 oop loader = holder->class_loader(); |
0 | 3302 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3303 return JNIHandles::make_local(env, loader); | |
3304 } | |
3305 } | |
3306 } | |
3307 return NULL; | |
3308 JVM_END | |
3309 | |
3310 | |
3311 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3312 JVMWrapper("JVM_GetClassContext"); | |
3313 ResourceMark rm(THREAD); | |
3314 JvmtiVMObjectAllocEventCollector oam; | |
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3315 vframeStream vfst(thread); |
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|
3316 |
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3317 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3318 // This must only be called from SecurityManager.getClassContext |
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3319 Method* m = vfst.method(); |
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3320 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3321 m->name() == vmSymbols::getClassContext_name() && |
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3322 m->signature() == vmSymbols::void_class_array_signature())) { |
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3323 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3324 } |
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|
3325 } |
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|
3326 |
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|
3327 // Collect method holders |
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3328 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3329 for (; !vfst.at_end(); vfst.security_next()) { |
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3330 Method* m = vfst.method(); |
0 | 3331 // Native frames are not returned |
8866
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3332 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3333 Klass* holder = m->method_holder(); |
0 | 3334 assert(holder->is_klass(), "just checking"); |
11001
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|
3335 klass_array->append(holder); |
0 | 3336 } |
3337 } | |
3338 | |
3339 // Create result array of type [Ljava/lang/Class; | |
11001
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3340 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3341 // Fill in mirrors corresponding to method holders |
11001
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|
3342 for (int i = 0; i < klass_array->length(); i++) { |
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changeset
|
3343 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3344 } |
3345 | |
3346 return (jobjectArray) JNIHandles::make_local(env, result); | |
3347 JVM_END | |
3348 | |
3349 | |
3350 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3351 JVMWrapper("JVM_ClassDepth"); | |
3352 ResourceMark rm(THREAD); | |
3353 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3354 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3355 | |
3356 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
3357 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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changeset
|
3358 if (class_name_sym == NULL) { |
0 | 3359 return -1; |
3360 } | |
3361 | |
3362 int depth = 0; | |
3363 | |
3364 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3365 if (!vfst.method()->is_native()) { | |
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|
3366 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3367 assert(holder->is_klass(), "just checking"); |
6940
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|
3368 if (holder->name() == class_name_sym) { |
0 | 3369 return depth; |
3370 } | |
3371 depth++; | |
3372 } | |
3373 } | |
3374 return -1; | |
3375 JVM_END | |
3376 | |
3377 | |
3378 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3379 JVMWrapper("JVM_ClassLoaderDepth"); | |
3380 ResourceMark rm(THREAD); | |
3381 int depth = 0; | |
3382 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3383 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3384 bool trusted = is_trusted_frame(thread, &vfst); | |
3385 if (trusted) return -1; | |
3386 | |
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3387 Method* m = vfst.method(); |
0 | 3388 if (!m->is_native()) { |
6940
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|
3389 InstanceKlass* holder = m->method_holder(); |
0 | 3390 assert(holder->is_klass(), "just checking"); |
6940
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|
3391 oop loader = holder->class_loader(); |
0 | 3392 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3393 return depth; | |
3394 } | |
3395 depth++; | |
3396 } | |
3397 } | |
3398 return -1; | |
3399 JVM_END | |
3400 | |
3401 | |
3402 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3403 | |
3404 | |
3405 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3406 JVMWrapper("JVM_GetSystemPackage"); | |
3407 ResourceMark rm(THREAD); | |
3408 JvmtiVMObjectAllocEventCollector oam; | |
3409 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3410 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3411 return (jstring) JNIHandles::make_local(result); | |
3412 JVM_END | |
3413 | |
3414 | |
3415 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3416 JVMWrapper("JVM_GetSystemPackages"); | |
3417 JvmtiVMObjectAllocEventCollector oam; | |
3418 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3419 return (jobjectArray) JNIHandles::make_local(result); | |
3420 JVM_END | |
3421 | |
3422 | |
3423 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3424 | |
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3425 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3426 if (current_class == NULL) { |
3427 return true; | |
3428 } | |
3429 if ((current_class == field_class) || access.is_public()) { | |
3430 return true; | |
3431 } | |
3432 | |
3433 if (access.is_protected()) { | |
3434 // See if current_class is a subclass of field_class | |
6983 | 3435 if (current_class->is_subclass_of(field_class)) { |
0 | 3436 return true; |
3437 } | |
3438 } | |
3439 | |
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3440 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3441 } |
3442 | |
3443 | |
3444 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3445 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3446 JVMWrapper("JVM_AllocateNewObject"); | |
3447 JvmtiVMObjectAllocEventCollector oam; | |
3448 // Receiver is not used | |
3449 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3450 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3451 | |
3452 // Cannot instantiate primitive types | |
3453 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3454 ResourceMark rm(THREAD); | |
3455 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3456 } | |
3457 | |
3458 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3459 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3460 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3461 ResourceMark rm(THREAD); |
3462 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3463 } | |
3464 | |
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|
3465 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3466 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3467 |
3468 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3469 | |
3470 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3471 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3472 | |
3473 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3474 curr_klass->initialize(CHECK_NULL); | |
3475 | |
3476 methodHandle m (THREAD, | |
3477 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3478 vmSymbols::void_method_signature())); | |
3479 if (m.is_null()) { | |
3480 ResourceMark rm(THREAD); | |
3481 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3482 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3483 vmSymbols::object_initializer_name(), |
3484 vmSymbols::void_method_signature())); | |
3485 } | |
3486 | |
3487 if (curr_klass == init_klass && !m->is_public()) { | |
3488 // Calling the constructor for class 'curr_klass'. | |
3489 // Only allow calls to a public no-arg constructor. | |
3490 // This path corresponds to creating an Externalizable object. | |
3491 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3492 } | |
3493 | |
3494 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3495 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3496 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3497 } | |
3498 | |
3499 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3500 // Call constructor m. This might call a constructor higher up in the hierachy | |
3501 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3502 | |
3503 return JNIHandles::make_local(obj()); | |
3504 JVM_END | |
3505 | |
3506 | |
3507 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3508 JVMWrapper("JVM_AllocateNewArray"); | |
3509 JvmtiVMObjectAllocEventCollector oam; | |
3510 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3511 | |
3512 if (java_lang_Class::is_primitive(mirror)) { | |
3513 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3514 } | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3515 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3516 oop result; |
3517 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3518 if (k->oop_is_typeArray()) { |
0 | 3519 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3520 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3521 } else if (k->oop_is_objArray()) { |
0 | 3522 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3523 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3524 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3525 result = oak->allocate(length, CHECK_NULL); | |
3526 } else { | |
3527 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3528 } | |
3529 return JNIHandles::make_local(env, result); | |
3530 JVM_END | |
3531 | |
3532 | |
3533 // Return the first non-null class loader up the execution stack, or null | |
3534 // if only code from the null class loader is on the stack. | |
3535 | |
3536 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3537 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3538 // UseNewReflection | |
3539 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3540 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3541 if (loader != NULL) { |
3542 return JNIHandles::make_local(env, loader); | |
3543 } | |
3544 } | |
3545 return NULL; | |
3546 JVM_END | |
3547 | |
3548 | |
3549 // Load a class relative to the most recent class on the stack with a non-null | |
3550 // classloader. | |
3551 // This function has been deprecated and should not be considered part of the | |
3552 // specified JVM interface. | |
3553 | |
3554 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3555 jclass currClass, jstring currClassName)) | |
3556 JVMWrapper("JVM_LoadClass0"); | |
3557 // Receiver is not used | |
3558 ResourceMark rm(THREAD); | |
3559 | |
3560 // Class name argument is not guaranteed to be in internal format | |
3561 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3562 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3563 | |
3564 const char* str = java_lang_String::as_utf8_string(string()); | |
3565 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3566 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3567 // It's impossible to create this class; the name cannot fit |
3568 // into the constant pool. | |
3569 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3570 } | |
3571 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3572 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3573 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3574 // Find the most recent class on the stack with a non-null classloader | |
3575 oop loader = NULL; | |
3576 oop protection_domain = NULL; | |
3577 if (curr_klass.is_null()) { | |
3578 for (vframeStream vfst(thread); | |
3579 !vfst.at_end() && loader == NULL; | |
3580 vfst.next()) { | |
3581 if (!vfst.method()->is_native()) { | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3582 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3583 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3584 protection_domain = holder->protection_domain(); |
0 | 3585 } |
3586 } | |
3587 } else { | |
6725
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changeset
|
3588 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
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changeset
|
3589 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
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diff
changeset
|
3590 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3591 } |
3592 Handle h_loader(THREAD, loader); | |
3593 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3594 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3595 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3596 if (TraceClassResolution && result != NULL) { |
6725
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changeset
|
3597 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3598 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3599 return result; |
0 | 3600 JVM_END |
3601 | |
3602 | |
3603 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3604 | |
3605 | |
3606 // resolve array handle and check arguments | |
3607 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3608 if (arr == NULL) { | |
3609 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3610 } | |
3611 oop a = JNIHandles::resolve_non_null(arr); | |
6725
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diff
changeset
|
3612 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3613 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3614 } | |
3615 return arrayOop(a); | |
3616 } | |
3617 | |
3618 | |
3619 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3620 JVMWrapper("JVM_GetArrayLength"); | |
3621 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3622 return a->length(); | |
3623 JVM_END | |
3624 | |
3625 | |
3626 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3627 JVMWrapper("JVM_Array_Get"); | |
3628 JvmtiVMObjectAllocEventCollector oam; | |
3629 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3630 jvalue value; | |
3631 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3632 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3633 return JNIHandles::make_local(env, box); | |
3634 JVM_END | |
3635 | |
3636 | |
3637 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3638 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3639 jvalue value; | |
3640 value.i = 0; // to initialize value before getting used in CHECK | |
3641 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3642 assert(a->is_typeArray(), "just checking"); | |
3643 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3644 BasicType wide_type = (BasicType) wCode; | |
3645 if (type != wide_type) { | |
3646 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3647 } | |
3648 return value; | |
3649 JVM_END | |
3650 | |
3651 | |
3652 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3653 JVMWrapper("JVM_SetArrayElement"); | |
3654 arrayOop a = check_array(env, arr, false, CHECK); | |
3655 oop box = JNIHandles::resolve(val); | |
3656 jvalue value; | |
3657 value.i = 0; // to initialize value before getting used in CHECK | |
3658 BasicType value_type; | |
3659 if (a->is_objArray()) { | |
3660 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3661 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3662 } else { | |
3663 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3664 } | |
3665 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3666 JVM_END | |
3667 | |
3668 | |
3669 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3670 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3671 arrayOop a = check_array(env, arr, true, CHECK); | |
3672 assert(a->is_typeArray(), "just checking"); | |
3673 BasicType value_type = (BasicType) vCode; | |
3674 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3675 JVM_END | |
3676 | |
3677 | |
3678 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3679 JVMWrapper("JVM_NewArray"); | |
3680 JvmtiVMObjectAllocEventCollector oam; | |
3681 oop element_mirror = JNIHandles::resolve(eltClass); | |
3682 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3683 return JNIHandles::make_local(env, result); | |
3684 JVM_END | |
3685 | |
3686 | |
3687 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3688 JVMWrapper("JVM_NewMultiArray"); | |
3689 JvmtiVMObjectAllocEventCollector oam; | |
3690 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3691 oop element_mirror = JNIHandles::resolve(eltClass); | |
3692 assert(dim_array->is_typeArray(), "just checking"); | |
3693 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3694 return JNIHandles::make_local(env, result); | |
3695 JVM_END | |
3696 | |
3697 | |
3698 // Networking library support //////////////////////////////////////////////////////////////////// | |
3699 | |
3700 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3701 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3702 return 0; |
0 | 3703 JVM_END |
3704 | |
3705 | |
3706 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3707 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3708 return os::socket(domain, type, protocol); |
0 | 3709 JVM_END |
3710 | |
3711 | |
3712 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3713 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3714 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3715 return os::socket_close(fd); |
0 | 3716 JVM_END |
3717 | |
3718 | |
3719 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3720 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3721 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3722 return os::socket_shutdown(fd, howto); |
0 | 3723 JVM_END |
3724 | |
3725 | |
3726 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3727 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3728 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3729 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3730 JVM_END |
3731 | |
3732 | |
3733 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3734 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3735 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3736 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3737 JVM_END |
3738 | |
3739 | |
3740 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3741 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3742 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3743 return os::timeout(fd, timeout); |
0 | 3744 JVM_END |
3745 | |
3746 | |
3747 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3748 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3749 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3750 return os::listen(fd, count); |
0 | 3751 JVM_END |
3752 | |
3753 | |
3754 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3755 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3756 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3757 return os::connect(fd, him, (socklen_t)len); |
0 | 3758 JVM_END |
3759 | |
3760 | |
3761 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3762 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3763 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3764 return os::bind(fd, him, (socklen_t)len); |
0 | 3765 JVM_END |
3766 | |
3767 | |
3768 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3769 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3770 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3771 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3772 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3773 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3774 return result; |
0 | 3775 JVM_END |
3776 | |
3777 | |
3778 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3779 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3780 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3781 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3782 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3783 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3784 return result; |
0 | 3785 JVM_END |
3786 | |
3787 | |
3788 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3789 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3790 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3791 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3792 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
|
3793 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3794 return result; |
0 | 3795 JVM_END |
3796 | |
3797 | |
3798 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3799 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3800 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3801 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3802 JVM_END |
3803 | |
3804 | |
3805 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3806 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3807 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3808 return os::socket_available(fd, pbytes); |
0 | 3809 JVM_END |
3810 | |
3811 | |
3812 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3813 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3814 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3815 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3816 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3817 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3818 return result; |
0 | 3819 JVM_END |
3820 | |
3821 | |
3822 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3823 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3824 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3825 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3826 JVM_END |
3827 | |
4717
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diff
changeset
|
3828 |
0 | 3829 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3830 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
3831 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3832 JVM_END |
0 | 3833 |
4717
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diff
changeset
|
3834 |
0 | 3835 // Library support /////////////////////////////////////////////////////////////////////////// |
3836 | |
3837 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3838 //%note jvm_ct | |
3839 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3840 char ebuf[1024]; | |
3841 void *load_result; | |
3842 { | |
3843 ThreadToNativeFromVM ttnfvm(thread); | |
1980
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diff
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|
3844 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3845 } |
3846 if (load_result == NULL) { | |
3847 char msg[1024]; | |
3848 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3849 // Since 'ebuf' may contain a string encoded using | |
3850 // platform encoding scheme, we need to pass | |
3851 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3852 // as the last argument. See bug 6367357. | |
3853 Handle h_exception = | |
3854 Exceptions::new_exception(thread, | |
3855 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3856 msg, Exceptions::unsafe_to_utf8); | |
3857 | |
3858 THROW_HANDLE_0(h_exception); | |
3859 } | |
3860 return load_result; | |
3861 JVM_END | |
3862 | |
3863 | |
3864 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3865 JVMWrapper("JVM_UnloadLibrary"); | |
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diff
changeset
|
3866 os::dll_unload(handle); |
0 | 3867 JVM_END |
3868 | |
3869 | |
3870 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3871 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
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diff
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|
3872 return os::dll_lookup(handle, name); |
0 | 3873 JVM_END |
3874 | |
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|
3875 |
0 | 3876 // Floating point support //////////////////////////////////////////////////////////////////// |
3877 | |
3878 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3879 JVMWrapper("JVM_IsNaN"); | |
3880 return g_isnan(a); | |
3881 JVM_END | |
3882 | |
3883 | |
3884 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3885 | |
3886 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3887 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3888 return Threads::is_supported_jni_version_including_1_1(version); | |
3889 JVM_END | |
3890 | |
3891 | |
3892 // String support /////////////////////////////////////////////////////////////////////////// | |
3893 | |
3894 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3895 JVMWrapper("JVM_InternString"); | |
3896 JvmtiVMObjectAllocEventCollector oam; | |
3897 if (str == NULL) return NULL; | |
3898 oop string = JNIHandles::resolve_non_null(str); | |
3899 oop result = StringTable::intern(string, CHECK_NULL); | |
3900 return (jstring) JNIHandles::make_local(env, result); | |
3901 JVM_END | |
3902 | |
3903 | |
3904 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3905 | |
3906 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3907 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3908 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3909 // that only works with java threads. | |
3910 | |
3911 | |
3912 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3913 VM_Exit::block_if_vm_exited(); | |
3914 JVMWrapper("JVM_RawMonitorCreate"); | |
3915 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3916 } | |
3917 | |
3918 | |
3919 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3920 VM_Exit::block_if_vm_exited(); | |
3921 JVMWrapper("JVM_RawMonitorDestroy"); | |
3922 delete ((Mutex*) mon); | |
3923 } | |
3924 | |
3925 | |
3926 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3927 VM_Exit::block_if_vm_exited(); | |
3928 JVMWrapper("JVM_RawMonitorEnter"); | |
3929 ((Mutex*) mon)->jvm_raw_lock(); | |
3930 return 0; | |
3931 } | |
3932 | |
3933 | |
3934 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3935 VM_Exit::block_if_vm_exited(); | |
3936 JVMWrapper("JVM_RawMonitorExit"); | |
3937 ((Mutex*) mon)->jvm_raw_unlock(); | |
3938 } | |
3939 | |
3940 | |
3941 // Support for Serialization | |
3942 | |
3943 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3944 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3945 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3946 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3947 | |
3948 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3949 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3950 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3951 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3952 | |
3953 | |
3954 void initialize_converter_functions() { | |
3955 if (JDK_Version::is_gte_jdk14x_version()) { | |
3956 // These functions only exist for compatibility with 1.3.1 and earlier | |
3957 return; | |
3958 } | |
3959 | |
3960 // called from universe_post_init() | |
3961 assert( | |
3962 int_bits_to_float_fn == NULL && | |
3963 long_bits_to_double_fn == NULL && | |
3964 float_to_int_bits_fn == NULL && | |
3965 double_to_long_bits_fn == NULL , | |
3966 "initialization done twice" | |
3967 ); | |
3968 // initialize | |
3969 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3970 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3971 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3972 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3973 // verify | |
3974 assert( | |
3975 int_bits_to_float_fn != NULL && | |
3976 long_bits_to_double_fn != NULL && | |
3977 float_to_int_bits_fn != NULL && | |
3978 double_to_long_bits_fn != NULL , | |
3979 "initialization failed" | |
3980 ); | |
3981 } | |
3982 | |
3983 | |
3984 | |
3985 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3986 | |
2177
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|
3987 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 3988 // Security Note: |
3989 // The Java level wrapper will perform the necessary security check allowing | |
3990 // us to pass the NULL as the initiating class loader. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
3991 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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875
diff
changeset
|
3992 |
0 | 3993 KlassHandle klass_handle(THREAD, klass); |
3994 // Check if we should initialize the class | |
3995 if (init && klass_handle->oop_is_instance()) { | |
3996 klass_handle->initialize(CHECK_NULL); | |
3997 } | |
3998 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3999 } | |
4000 | |
4001 | |
4002 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4003 | |
4004 #ifndef PRODUCT | |
4005 | |
4006 extern "C" { | |
4007 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4008 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4009 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4010 } | |
4011 | |
4012 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4013 JVMWrapper("JVM_AccessBoolVMFlag"); | |
12322
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twisti
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12264
diff
changeset
|
4014 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4015 JVM_END |
4016 | |
4017 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4018 JVMWrapper("JVM_AccessVMIntFlag"); | |
4019 intx v; | |
12322
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diff
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|
4020 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4021 *value = (jint)v; |
4022 return result; | |
4023 JVM_END | |
4024 | |
4025 | |
4026 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4027 JVMWrapper("JVM_VMBreakPoint"); | |
4028 oop the_obj = JNIHandles::resolve(obj); | |
4029 BREAKPOINT; | |
4030 JVM_END | |
4031 | |
4032 | |
4033 #endif | |
4034 | |
4035 | |
4036 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4037 | |
4038 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4039 JVMWrapper("JVM_InvokeMethod"); | |
4040 Handle method_handle; | |
4041 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4042 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4043 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4044 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4045 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4046 jobject res = JNIHandles::make_local(env, result); | |
4047 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4048 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4049 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4050 if (java_lang_Class::is_primitive(ret_type)) { | |
4051 // Only for primitive type vm allocates memory for java object. | |
4052 // See box() method. | |
4053 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4054 } | |
4055 } | |
4056 return res; | |
4057 } else { | |
4058 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4059 } | |
4060 JVM_END | |
4061 | |
4062 | |
4063 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4064 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4065 oop constructor_mirror = JNIHandles::resolve(c); | |
4066 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4067 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4068 jobject res = JNIHandles::make_local(env, result); | |
4069 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4070 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4071 } | |
4072 return res; | |
4073 JVM_END | |
4074 | |
4075 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4076 | |
4077 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4078 JVMWrapper("JVM_SupportsCX8"); | |
4079 return VM_Version::supports_cx8(); | |
4080 JVM_END | |
4081 | |
4082 | |
4083 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4084 JVMWrapper("JVM_CX8Field"); | |
4085 jlong res; | |
4086 oop o = JNIHandles::resolve(obj); | |
4087 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4088 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4089 | |
4090 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4091 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4092 | |
4093 return res == oldVal; | |
4094 JVM_END | |
4095 | |
116
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diff
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|
4096 // DTrace /////////////////////////////////////////////////////////////////// |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4097 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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0
diff
changeset
|
4098 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
changeset
|
4099 JVMWrapper("JVM_DTraceGetVersion"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4100 return (jint)JVM_TRACING_DTRACE_VERSION; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
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|
4101 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4102 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4103 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4104 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
018d5b58dd4f
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diff
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|
4105 JVM_DTraceProvider* providers)) |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4106 JVMWrapper("JVM_DTraceActivate"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4107 return DTraceJSDT::activate( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4108 version, module_name, providers_count, providers, CHECK_0); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
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|
4109 JVM_END |
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diff
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|
4110 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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|
4111 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
018d5b58dd4f
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diff
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|
4112 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4113 return DTraceJSDT::is_probe_enabled(method); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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|
4114 JVM_END |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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|
4115 |
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|
4116 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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|
4117 JVMWrapper("JVM_DTraceDispose"); |
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|
4118 DTraceJSDT::dispose(handle); |
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|
4119 JVM_END |
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|
4120 |
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4121 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4122 JVMWrapper("JVM_DTraceIsSupported"); |
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4123 return DTraceJSDT::is_supported(); |
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4124 JVM_END |
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4125 |
0 | 4126 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4127 // jvmti agent threads, and JNI attaching threads are skipped) | |
4128 // See CR 6404306 regarding JNI attaching threads | |
4129 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4130 ResourceMark rm(THREAD); | |
4131 ThreadsListEnumerator tle(THREAD, false, false); | |
4132 JvmtiVMObjectAllocEventCollector oam; | |
4133 | |
4134 int num_threads = tle.num_threads(); | |
1142 | 4135 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4136 objArrayHandle threads_ah(THREAD, r); |
4137 | |
4138 for (int i = 0; i < num_threads; i++) { | |
4139 Handle h = tle.get_threadObj(i); | |
4140 threads_ah->obj_at_put(i, h()); | |
4141 } | |
4142 | |
4143 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4144 JVM_END | |
4145 | |
4146 | |
4147 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4148 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4149 // the corresponding entry in the given threads array | |
4150 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4151 JVMWrapper("JVM_DumpThreads"); | |
4152 JvmtiVMObjectAllocEventCollector oam; | |
4153 | |
4154 // Check if threads is null | |
4155 if (threads == NULL) { | |
4156 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4157 } | |
4158 | |
4159 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4160 objArrayHandle ah(THREAD, a); | |
4161 int num_threads = ah->length(); | |
4162 // check if threads is non-empty array | |
4163 if (num_threads == 0) { | |
4164 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4165 } | |
4166 | |
4167 // check if threads is not an array of objects of Thread class | |
6831
d8ce2825b193
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coleenp
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|
4168 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4169 if (k != SystemDictionary::Thread_klass()) { |
0 | 4170 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4171 } | |
4172 | |
4173 ResourceMark rm(THREAD); | |
4174 | |
4175 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4176 for (int i = 0; i < num_threads; i++) { | |
4177 oop thread_obj = ah->obj_at(i); | |
4178 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4179 thread_handle_array->append(h); | |
4180 } | |
4181 | |
4182 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4183 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4184 | |
4185 JVM_END | |
4186 | |
4187 // JVM monitoring and management support | |
4188 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4189 return Management::get_jmm_interface(version); | |
4190 JVM_END | |
4191 | |
4192 // com.sun.tools.attach.VirtualMachine agent properties support | |
4193 // | |
4194 // Initialize the agent properties with the properties maintained in the VM | |
4195 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4196 JVMWrapper("JVM_InitAgentProperties"); | |
4197 ResourceMark rm; | |
4198 | |
4199 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4200 | |
4201 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4202 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4203 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4204 return properties; | |
4205 JVM_END | |
4206 | |
4207 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4208 { | |
4209 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4210 JvmtiVMObjectAllocEventCollector oam; | |
4211 | |
4212 if (ofClass == NULL) { | |
4213 return NULL; | |
4214 } | |
4215 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4216 // Special handling for primitive objects | |
4217 if (java_lang_Class::is_primitive(mirror())) { | |
4218 return NULL; | |
4219 } | |
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|
4220 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4221 if (!k->oop_is_instance()) { |
0 | 4222 return NULL; |
4223 } | |
4224 instanceKlassHandle ik_h(THREAD, k); | |
4225 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4226 if (encl_method_class_idx == 0) { | |
4227 return NULL; | |
4228 } | |
1142 | 4229 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4230 objArrayHandle dest(THREAD, dest_o); |
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|
4231 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4232 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4233 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4234 if (encl_method_method_idx != 0) { | |
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2162
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|
4235 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4236 extract_low_short_from_int( |
4237 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4238 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4239 dest->obj_at_put(1, str()); | |
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|
4240 sym = ik_h->constants()->symbol_at( |
0 | 4241 extract_high_short_from_int( |
4242 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4243 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4244 dest->obj_at_put(2, str()); | |
4245 } | |
4246 return (jobjectArray) JNIHandles::make_local(dest()); | |
4247 } | |
4248 JVM_END | |
4249 | |
4250 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4251 jint javaThreadState)) | |
4252 { | |
4253 // If new thread states are added in future JDK and VM versions, | |
4254 // this should check if the JDK version is compatible with thread | |
4255 // states supported by the VM. Return NULL if not compatible. | |
4256 // | |
4257 // This function must map the VM java_lang_Thread::ThreadStatus | |
4258 // to the Java thread state that the JDK supports. | |
4259 // | |
4260 | |
4261 typeArrayHandle values_h; | |
4262 switch (javaThreadState) { | |
4263 case JAVA_THREAD_STATE_NEW : { | |
4264 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4265 values_h = typeArrayHandle(THREAD, r); | |
4266 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4267 break; | |
4268 } | |
4269 case JAVA_THREAD_STATE_RUNNABLE : { | |
4270 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4271 values_h = typeArrayHandle(THREAD, r); | |
4272 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4273 break; | |
4274 } | |
4275 case JAVA_THREAD_STATE_BLOCKED : { | |
4276 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4277 values_h = typeArrayHandle(THREAD, r); | |
4278 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4279 break; | |
4280 } | |
4281 case JAVA_THREAD_STATE_WAITING : { | |
4282 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4283 values_h = typeArrayHandle(THREAD, r); | |
4284 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4285 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4286 break; | |
4287 } | |
4288 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4289 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4290 values_h = typeArrayHandle(THREAD, r); | |
4291 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4292 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4293 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4294 break; | |
4295 } | |
4296 case JAVA_THREAD_STATE_TERMINATED : { | |
4297 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4298 values_h = typeArrayHandle(THREAD, r); | |
4299 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4300 break; | |
4301 } | |
4302 default: | |
4303 // Unknown state - probably incompatible JDK version | |
4304 return NULL; | |
4305 } | |
4306 | |
4307 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4308 } | |
4309 JVM_END | |
4310 | |
4311 | |
4312 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4313 jint javaThreadState, | |
4314 jintArray values)) | |
4315 { | |
4316 // If new thread states are added in future JDK and VM versions, | |
4317 // this should check if the JDK version is compatible with thread | |
4318 // states supported by the VM. Return NULL if not compatible. | |
4319 // | |
4320 // This function must map the VM java_lang_Thread::ThreadStatus | |
4321 // to the Java thread state that the JDK supports. | |
4322 // | |
4323 | |
4324 ResourceMark rm; | |
4325 | |
4326 // Check if threads is null | |
4327 if (values == NULL) { | |
4328 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4329 } | |
4330 | |
4331 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4332 typeArrayHandle values_h(THREAD, v); | |
4333 | |
4334 objArrayHandle names_h; | |
4335 switch (javaThreadState) { | |
4336 case JAVA_THREAD_STATE_NEW : { | |
4337 assert(values_h->length() == 1 && | |
4338 values_h->int_at(0) == java_lang_Thread::NEW, | |
4339 "Invalid threadStatus value"); | |
4340 | |
1142 | 4341 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4342 1, /* only 1 substate */ |
4343 CHECK_NULL); | |
4344 names_h = objArrayHandle(THREAD, r); | |
4345 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4346 names_h->obj_at_put(0, name()); | |
4347 break; | |
4348 } | |
4349 case JAVA_THREAD_STATE_RUNNABLE : { | |
4350 assert(values_h->length() == 1 && | |
4351 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4352 "Invalid threadStatus value"); | |
4353 | |
1142 | 4354 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4355 1, /* only 1 substate */ |
4356 CHECK_NULL); | |
4357 names_h = objArrayHandle(THREAD, r); | |
4358 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4359 names_h->obj_at_put(0, name()); | |
4360 break; | |
4361 } | |
4362 case JAVA_THREAD_STATE_BLOCKED : { | |
4363 assert(values_h->length() == 1 && | |
4364 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4365 "Invalid threadStatus value"); | |
4366 | |
1142 | 4367 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4368 1, /* only 1 substate */ |
4369 CHECK_NULL); | |
4370 names_h = objArrayHandle(THREAD, r); | |
4371 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4372 names_h->obj_at_put(0, name()); | |
4373 break; | |
4374 } | |
4375 case JAVA_THREAD_STATE_WAITING : { | |
4376 assert(values_h->length() == 2 && | |
4377 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4378 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4379 "Invalid threadStatus value"); | |
1142 | 4380 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4381 2, /* number of substates */ |
4382 CHECK_NULL); | |
4383 names_h = objArrayHandle(THREAD, r); | |
4384 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4385 CHECK_NULL); | |
4386 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4387 CHECK_NULL); | |
4388 names_h->obj_at_put(0, name0()); | |
4389 names_h->obj_at_put(1, name1()); | |
4390 break; | |
4391 } | |
4392 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4393 assert(values_h->length() == 3 && | |
4394 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4395 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4396 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4397 "Invalid threadStatus value"); | |
1142 | 4398 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4399 3, /* number of substates */ |
4400 CHECK_NULL); | |
4401 names_h = objArrayHandle(THREAD, r); | |
4402 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4403 CHECK_NULL); | |
4404 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4405 CHECK_NULL); | |
4406 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4407 CHECK_NULL); | |
4408 names_h->obj_at_put(0, name0()); | |
4409 names_h->obj_at_put(1, name1()); | |
4410 names_h->obj_at_put(2, name2()); | |
4411 break; | |
4412 } | |
4413 case JAVA_THREAD_STATE_TERMINATED : { | |
4414 assert(values_h->length() == 1 && | |
4415 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4416 "Invalid threadStatus value"); | |
1142 | 4417 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4418 1, /* only 1 substate */ |
4419 CHECK_NULL); | |
4420 names_h = objArrayHandle(THREAD, r); | |
4421 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4422 names_h->obj_at_put(0, name()); | |
4423 break; | |
4424 } | |
4425 default: | |
4426 // Unknown state - probably incompatible JDK version | |
4427 return NULL; | |
4428 } | |
4429 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4430 } | |
4431 JVM_END | |
4432 | |
4433 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4434 { | |
4435 memset(info, 0, sizeof(info_size)); | |
4436 | |
4437 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4438 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4439 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4440 | |
4441 // when we add a new capability in the jvm_version_info struct, we should also | |
4442 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4443 // counter defined in runtimeService.cpp. | |
4444 info->is_attachable = AttachListener::is_attach_supported(); | |
4445 } | |
4446 JVM_END |