Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvm.cpp @ 20690:d4caf9c96afd
8035893: JVM_GetVersionInfo fails to zero structure
Reviewed-by: sla, zgu
author | igerasim |
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date | Fri, 28 Feb 2014 16:00:40 +0400 |
parents | fe34c5ab0b35 |
children | 7848fc12602b 3c8b53552a43 |
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" | |
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27 #include "classfile/classLoaderExt.hpp" |
1972 | 28 #include "classfile/javaAssertions.hpp" |
29 #include "classfile/javaClasses.hpp" | |
30 #include "classfile/symbolTable.hpp" | |
31 #include "classfile/systemDictionary.hpp" | |
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32 #if INCLUDE_CDS |
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33 #include "classfile/sharedClassUtil.hpp" |
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34 #include "classfile/systemDictionaryShared.hpp" |
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35 #endif |
1972 | 36 #include "classfile/vmSymbols.hpp" |
37 #include "gc_interface/collectedHeap.inline.hpp" | |
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38 #include "interpreter/bytecode.hpp" |
1972 | 39 #include "memory/oopFactory.hpp" |
40 #include "memory/universe.inline.hpp" | |
3938 | 41 #include "oops/fieldStreams.hpp" |
1972 | 42 #include "oops/instanceKlass.hpp" |
43 #include "oops/objArrayKlass.hpp" | |
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44 #include "oops/method.hpp" |
1972 | 45 #include "prims/jvm.h" |
46 #include "prims/jvm_misc.hpp" | |
47 #include "prims/jvmtiExport.hpp" | |
48 #include "prims/jvmtiThreadState.hpp" | |
49 #include "prims/nativeLookup.hpp" | |
50 #include "prims/privilegedStack.hpp" | |
51 #include "runtime/arguments.hpp" | |
52 #include "runtime/dtraceJSDT.hpp" | |
53 #include "runtime/handles.inline.hpp" | |
54 #include "runtime/init.hpp" | |
55 #include "runtime/interfaceSupport.hpp" | |
56 #include "runtime/java.hpp" | |
57 #include "runtime/javaCalls.hpp" | |
58 #include "runtime/jfieldIDWorkaround.hpp" | |
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59 #include "runtime/orderAccess.inline.hpp" |
1972 | 60 #include "runtime/os.hpp" |
61 #include "runtime/perfData.hpp" | |
62 #include "runtime/reflection.hpp" | |
63 #include "runtime/vframe.hpp" | |
64 #include "runtime/vm_operations.hpp" | |
65 #include "services/attachListener.hpp" | |
66 #include "services/management.hpp" | |
67 #include "services/threadService.hpp" | |
10405 | 68 #include "trace/tracing.hpp" |
1972 | 69 #include "utilities/copy.hpp" |
70 #include "utilities/defaultStream.hpp" | |
71 #include "utilities/dtrace.hpp" | |
72 #include "utilities/events.hpp" | |
73 #include "utilities/histogram.hpp" | |
74 #include "utilities/top.hpp" | |
75 #include "utilities/utf8.hpp" | |
76 #ifdef TARGET_OS_FAMILY_linux | |
77 # include "jvm_linux.h" | |
78 #endif | |
79 #ifdef TARGET_OS_FAMILY_solaris | |
80 # include "jvm_solaris.h" | |
81 #endif | |
82 #ifdef TARGET_OS_FAMILY_windows | |
83 # include "jvm_windows.h" | |
84 #endif | |
14411 | 85 #ifdef TARGET_OS_FAMILY_aix |
86 # include "jvm_aix.h" | |
87 #endif | |
3960 | 88 #ifdef TARGET_OS_FAMILY_bsd |
89 # include "jvm_bsd.h" | |
90 #endif | |
1972 | 91 |
0 | 92 #include <errno.h> |
93 | |
4006 | 94 #ifndef USDT2 |
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95 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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96 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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97 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 98 #endif /* !USDT2 */ |
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99 |
0 | 100 /* |
101 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
102 such ctors and calls MUST NOT come between an oop declaration/init and its | |
103 usage because if objects are move this may cause various memory stomps, bus | |
104 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
105 failures": | |
106 | |
107 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
108 JVMWrapper("JVM_GetClassDeclaredFields"); | |
109 | |
110 // Object address to be held directly in mirror & not visible to GC | |
111 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
112 | |
113 // If this ctor can hit a safepoint, moving objects around, then | |
114 ComplexConstructor foo; | |
115 | |
116 // Boom! mirror may point to JUNK instead of the intended object | |
117 (some dereference of mirror) | |
118 | |
119 // Here's another call that may block for GC, making mirror stale | |
120 MutexLocker ml(some_lock); | |
121 | |
122 // And here's an initializer that can result in a stale oop | |
123 // all in one step. | |
124 oop o = call_that_can_throw_exception(TRAPS); | |
125 | |
126 | |
127 The solution is to keep the oop declaration BELOW the ctor or function | |
128 call that might cause a GC, do another resolve to reassign the oop, or | |
129 consider use of a Handle instead of an oop so there is immunity from object | |
130 motion. But note that the "QUICK" entries below do not have a handlemark | |
131 and thus can only support use of handles passed in. | |
132 */ | |
133 | |
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134 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 135 ResourceMark rm; |
136 int line_number = -1; | |
137 const char * source_file = NULL; | |
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138 const char * trace = "explicit"; |
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139 InstanceKlass* caller = NULL; |
0 | 140 JavaThread* jthread = JavaThread::current(); |
141 if (jthread->has_last_Java_frame()) { | |
142 vframeStream vfst(jthread); | |
143 | |
144 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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145 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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146 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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147 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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148 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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149 |
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150 Method* last_caller = NULL; |
0 | 151 |
152 while (!vfst.at_end()) { | |
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153 Method* m = vfst.method(); |
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154 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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155 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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156 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 157 break; |
158 } | |
159 last_caller = m; | |
160 vfst.next(); | |
161 } | |
162 // if this is called from Class.forName0 and that is called from Class.forName, | |
163 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
164 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
165 bool found_it = false; | |
166 if (!vfst.at_end() && | |
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167 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 168 vfst.method()->name() == vmSymbols::forName0_name()) { |
169 vfst.next(); | |
170 if (!vfst.at_end() && | |
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171 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 172 vfst.method()->name() == vmSymbols::forName_name()) { |
173 vfst.next(); | |
174 found_it = true; | |
175 } | |
176 } else if (last_caller != NULL && | |
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177 last_caller->method_holder()->name() == |
0 | 178 vmSymbols::java_lang_ClassLoader() && |
179 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
180 last_caller->name() == vmSymbols::loadClass_name())) { | |
181 found_it = true; | |
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182 } else if (!vfst.at_end()) { |
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183 if (vfst.method()->is_native()) { |
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184 // JNI call |
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185 found_it = true; |
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186 } |
0 | 187 } |
188 if (found_it && !vfst.at_end()) { | |
189 // found the caller | |
190 caller = vfst.method()->method_holder(); | |
191 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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192 if (line_number == -1) { |
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193 // show method name if it's a native method |
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194 trace = vfst.method()->name_and_sig_as_C_string(); |
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195 } |
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196 Symbol* s = caller->source_file_name(); |
0 | 197 if (s != NULL) { |
198 source_file = s->as_C_string(); | |
199 } | |
200 } | |
201 } | |
202 if (caller != NULL) { | |
203 if (to_class != caller) { | |
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204 const char * from = caller->external_name(); |
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205 const char * to = to_class->external_name(); |
0 | 206 // print in a single call to reduce interleaving between threads |
207 if (source_file != NULL) { | |
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208 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 209 } else { |
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210 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 211 } |
212 } | |
213 } | |
214 } | |
215 | |
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216 void trace_class_resolution(Klass* to_class) { |
0 | 217 EXCEPTION_MARK; |
218 trace_class_resolution_impl(to_class, THREAD); | |
219 if (HAS_PENDING_EXCEPTION) { | |
220 CLEAR_PENDING_EXCEPTION; | |
221 } | |
222 } | |
223 | |
224 // Wrapper to trace JVM functions | |
225 | |
226 #ifdef ASSERT | |
227 class JVMTraceWrapper : public StackObj { | |
228 public: | |
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229 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
0 | 230 if (TraceJVMCalls) { |
231 va_list ap; | |
232 va_start(ap, format); | |
233 tty->print("JVM "); | |
234 tty->vprint_cr(format, ap); | |
235 va_end(ap); | |
236 } | |
237 } | |
238 }; | |
239 | |
240 Histogram* JVMHistogram; | |
241 volatile jint JVMHistogram_lock = 0; | |
242 | |
243 class JVMHistogramElement : public HistogramElement { | |
244 public: | |
245 JVMHistogramElement(const char* name); | |
246 }; | |
247 | |
248 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
249 _name = elementName; | |
250 uintx count = 0; | |
251 | |
252 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
253 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
254 count +=1; | |
255 if ( (WarnOnStalledSpinLock > 0) | |
256 && (count % WarnOnStalledSpinLock == 0)) { | |
257 warning("JVMHistogram_lock seems to be stalled"); | |
258 } | |
259 } | |
260 } | |
261 | |
262 if(JVMHistogram == NULL) | |
263 JVMHistogram = new Histogram("JVM Call Counts",100); | |
264 | |
265 JVMHistogram->add_element(this); | |
266 Atomic::dec(&JVMHistogram_lock); | |
267 } | |
268 | |
269 #define JVMCountWrapper(arg) \ | |
270 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
271 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
272 | |
273 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
274 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
275 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
276 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
277 #else | |
278 #define JVMWrapper(arg1) | |
279 #define JVMWrapper2(arg1, arg2) | |
280 #define JVMWrapper3(arg1, arg2, arg3) | |
281 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
282 #endif | |
283 | |
284 | |
285 // Interface version ///////////////////////////////////////////////////////////////////// | |
286 | |
287 | |
288 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
289 return JVM_INTERFACE_VERSION; | |
290 JVM_END | |
291 | |
292 | |
293 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
294 | |
295 | |
296 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
297 JVMWrapper("JVM_CurrentTimeMillis"); | |
298 return os::javaTimeMillis(); | |
299 JVM_END | |
300 | |
301 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
302 JVMWrapper("JVM_NanoTime"); | |
303 return os::javaTimeNanos(); | |
304 JVM_END | |
305 | |
306 | |
307 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
308 jobject dst, jint dst_pos, jint length)) | |
309 JVMWrapper("JVM_ArrayCopy"); | |
310 // Check if we have null pointers | |
311 if (src == NULL || dst == NULL) { | |
312 THROW(vmSymbols::java_lang_NullPointerException()); | |
313 } | |
314 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
315 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
316 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
317 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
318 // Do copy | |
6983 | 319 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 320 JVM_END |
321 | |
322 | |
323 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
324 JavaValue r(T_OBJECT); | |
325 // public synchronized Object put(Object key, Object value); | |
326 HandleMark hm(THREAD); | |
327 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
328 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
329 JavaCalls::call_virtual(&r, | |
330 props, | |
1142 | 331 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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332 vmSymbols::put_name(), |
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333 vmSymbols::object_object_object_signature(), |
0 | 334 key_str, |
335 value_str, | |
336 THREAD); | |
337 } | |
338 | |
339 | |
340 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
341 | |
342 | |
343 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
344 JVMWrapper("JVM_InitProperties"); | |
345 ResourceMark rm; | |
346 | |
347 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
348 | |
349 // System property list includes both user set via -D option and | |
350 // jvm system specific properties. | |
351 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
352 PUTPROP(props, p->key(), p->value()); | |
353 } | |
354 | |
355 // Convert the -XX:MaxDirectMemorySize= command line flag | |
356 // to the sun.nio.MaxDirectMemorySize property. | |
357 // Do this after setting user properties to prevent people | |
358 // from setting the value with a -D option, as requested. | |
359 { | |
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360 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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361 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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362 } else { |
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363 char as_chars[256]; |
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364 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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365 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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366 } |
0 | 367 } |
368 | |
369 // JVM monitoring and management support | |
370 // Add the sun.management.compiler property for the compiler's name | |
371 { | |
372 #undef CSIZE | |
373 #if defined(_LP64) || defined(_WIN64) | |
374 #define CSIZE "64-Bit " | |
375 #else | |
376 #define CSIZE | |
377 #endif // 64bit | |
378 | |
379 #ifdef TIERED | |
380 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
381 #else | |
382 #if defined(COMPILER1) | |
383 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
384 #elif defined(COMPILER2) | |
385 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
386 #else | |
387 const char* compiler_name = ""; | |
388 #endif // compilers | |
389 #endif // TIERED | |
390 | |
391 if (*compiler_name != '\0' && | |
392 (Arguments::mode() != Arguments::_int)) { | |
393 PUTPROP(props, "sun.management.compiler", compiler_name); | |
394 } | |
395 } | |
396 | |
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397 const char* enableSharedLookupCache = "false"; |
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398 #if INCLUDE_CDS |
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399 if (ClassLoaderExt::is_lookup_cache_enabled()) { |
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400 enableSharedLookupCache = "true"; |
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401 } |
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402 #endif |
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403 PUTPROP(props, "sun.cds.enableSharedLookupCache", enableSharedLookupCache); |
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404 |
0 | 405 return properties; |
406 JVM_END | |
407 | |
408 | |
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409 /* |
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410 * Return the temporary directory that the VM uses for the attach |
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411 * and perf data files. |
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412 * |
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413 * It is important that this directory is well-known and the |
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414 * same for all VM instances. It cannot be affected by configuration |
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415 * variables such as java.io.tmpdir. |
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416 */ |
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417 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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418 JVMWrapper("JVM_GetTemporaryDirectory"); |
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419 HandleMark hm(THREAD); |
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420 const char* temp_dir = os::get_temp_directory(); |
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421 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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422 return (jstring) JNIHandles::make_local(env, h()); |
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423 JVM_END |
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424 |
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425 |
0 | 426 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
427 | |
428 extern volatile jint vm_created; | |
429 | |
430 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
431 if (vm_created != 0 && (code == 0)) { | |
432 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
433 Universe::run_finalizers_on_exit(); | |
434 } | |
435 before_exit(thread); | |
436 vm_exit(code); | |
437 JVM_END | |
438 | |
439 | |
440 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
441 before_exit(thread); | |
442 vm_exit(code); | |
443 JVM_END | |
444 | |
445 | |
446 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
447 register_on_exit_function(func); | |
448 JVM_END | |
449 | |
450 | |
451 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
452 JVMWrapper("JVM_GC"); | |
453 if (!DisableExplicitGC) { | |
454 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
455 } | |
456 JVM_END | |
457 | |
458 | |
459 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
460 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
461 return Universe::heap()->millis_since_last_gc(); | |
462 JVM_END | |
463 | |
464 | |
465 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
466 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
467 JVM_END | |
468 | |
469 | |
470 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
471 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
472 JVM_END | |
473 | |
474 static inline jlong convert_size_t_to_jlong(size_t val) { | |
475 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
476 NOT_LP64 (return (jlong)val;) | |
477 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
478 } | |
479 | |
480 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
481 JVMWrapper("JVM_TotalMemory"); | |
482 size_t n = Universe::heap()->capacity(); | |
483 return convert_size_t_to_jlong(n); | |
484 JVM_END | |
485 | |
486 | |
487 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
488 JVMWrapper("JVM_FreeMemory"); | |
489 CollectedHeap* ch = Universe::heap(); | |
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490 size_t n; |
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491 { |
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492 MutexLocker x(Heap_lock); |
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493 n = ch->capacity() - ch->used(); |
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494 } |
0 | 495 return convert_size_t_to_jlong(n); |
496 JVM_END | |
497 | |
498 | |
499 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
500 JVMWrapper("JVM_MaxMemory"); | |
501 size_t n = Universe::heap()->max_capacity(); | |
502 return convert_size_t_to_jlong(n); | |
503 JVM_END | |
504 | |
505 | |
506 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
507 JVMWrapper("JVM_ActiveProcessorCount"); | |
508 return os::active_processor_count(); | |
509 JVM_END | |
510 | |
511 | |
512 | |
513 // java.lang.Throwable ////////////////////////////////////////////////////// | |
514 | |
515 | |
516 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
517 JVMWrapper("JVM_FillInStackTrace"); | |
518 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
519 java_lang_Throwable::fill_in_stack_trace(exception); | |
520 JVM_END | |
521 | |
522 | |
523 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
524 JVMWrapper("JVM_GetStackTraceDepth"); | |
525 oop exception = JNIHandles::resolve(throwable); | |
526 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
527 JVM_END | |
528 | |
529 | |
530 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
531 JVMWrapper("JVM_GetStackTraceElement"); | |
532 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
533 oop exception = JNIHandles::resolve(throwable); | |
534 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
535 return JNIHandles::make_local(env, element); | |
536 JVM_END | |
537 | |
538 | |
539 // java.lang.Object /////////////////////////////////////////////// | |
540 | |
541 | |
542 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
543 JVMWrapper("JVM_IHashCode"); | |
544 // as implemented in the classic virtual machine; return 0 if object is NULL | |
545 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
546 JVM_END | |
547 | |
548 | |
549 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
550 JVMWrapper("JVM_MonitorWait"); | |
551 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
552 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
553 if (JvmtiExport::should_post_monitor_wait()) { | |
554 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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555 |
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556 // The current thread already owns the monitor and it has not yet |
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557 // been added to the wait queue so the current thread cannot be |
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558 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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559 // event handler cannot accidentally consume an unpark() meant for |
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560 // the ParkEvent associated with this ObjectMonitor. |
0 | 561 } |
562 ObjectSynchronizer::wait(obj, ms, CHECK); | |
563 JVM_END | |
564 | |
565 | |
566 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
567 JVMWrapper("JVM_MonitorNotify"); | |
568 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
569 ObjectSynchronizer::notify(obj, CHECK); | |
570 JVM_END | |
571 | |
572 | |
573 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
574 JVMWrapper("JVM_MonitorNotifyAll"); | |
575 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
576 ObjectSynchronizer::notifyall(obj, CHECK); | |
577 JVM_END | |
578 | |
579 | |
580 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
581 JVMWrapper("JVM_Clone"); | |
582 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
583 const KlassHandle klass (THREAD, obj->klass()); | |
584 JvmtiVMObjectAllocEventCollector oam; | |
585 | |
586 #ifdef ASSERT | |
587 // Just checking that the cloneable flag is set correct | |
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588 if (obj->is_array()) { |
0 | 589 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
590 } else { | |
591 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 592 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 593 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
594 } | |
595 #endif | |
596 | |
597 // Check if class of obj supports the Cloneable interface. | |
598 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
599 if (!klass->is_cloneable()) { | |
600 ResourceMark rm(THREAD); | |
601 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
602 } | |
603 | |
604 // Make shallow object copy | |
605 const int size = obj->size(); | |
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606 oop new_obj_oop = NULL; |
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607 if (obj->is_array()) { |
0 | 608 const int length = ((arrayOop)obj())->length(); |
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609 new_obj_oop = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); |
0 | 610 } else { |
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611 new_obj_oop = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); |
0 | 612 } |
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613 |
0 | 614 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread |
615 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
616 // be suspended in the middle of copying the pointer and end up with parts | |
617 // of two different pointers in the field. Subsequent dereferences will crash. | |
618 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
619 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
620 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
621 // The same is true of StubRoutines::object_copy and the various oop_copy | |
622 // variants, and of the code generated by the inline_native_clone intrinsic. | |
623 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
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624 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj_oop, |
0 | 625 (size_t)align_object_size(size) / HeapWordsPerLong); |
626 // Clear the header | |
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627 new_obj_oop->init_mark(); |
0 | 628 |
629 // Store check (mark entire object and let gc sort it out) | |
630 BarrierSet* bs = Universe::heap()->barrier_set(); | |
631 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
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632 bs->write_region(MemRegion((HeapWord*)new_obj_oop, size)); |
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633 |
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634 Handle new_obj(THREAD, new_obj_oop); |
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635 // Special handling for MemberNames. Since they contain Method* metadata, they |
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636 // must be registered so that RedefineClasses can fix metadata contained in them. |
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637 if (java_lang_invoke_MemberName::is_instance(new_obj()) && |
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638 java_lang_invoke_MemberName::is_method(new_obj())) { |
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639 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(new_obj()); |
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640 // MemberName may be unresolved, so doesn't need registration until resolved. |
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641 if (method != NULL) { |
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642 methodHandle m(THREAD, method); |
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643 // This can safepoint and redefine method, so need both new_obj and method |
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644 // in a handle, for two different reasons. new_obj can move, method can be |
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645 // deleted if nothing is using it on the stack. |
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646 m->method_holder()->add_member_name(new_obj()); |
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647 } |
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648 } |
0 | 649 |
650 // Caution: this involves a java upcall, so the clone should be | |
651 // "gc-robust" by this stage. | |
652 if (klass->has_finalizer()) { | |
653 assert(obj->is_instance(), "should be instanceOop"); | |
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654 new_obj_oop = InstanceKlass::register_finalizer(instanceOop(new_obj()), CHECK_NULL); |
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655 new_obj = Handle(THREAD, new_obj_oop); |
0 | 656 } |
657 | |
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658 return JNIHandles::make_local(env, new_obj()); |
0 | 659 JVM_END |
660 | |
661 // java.lang.Compiler //////////////////////////////////////////////////// | |
662 | |
663 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
664 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
665 // functions are all silently ignored unless JVM warnings are printed. | |
666 | |
667 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
668 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
669 JVM_END | |
670 | |
671 | |
672 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
673 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
674 return JNI_FALSE; | |
675 JVM_END | |
676 | |
677 | |
678 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
679 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
680 return JNI_FALSE; | |
681 JVM_END | |
682 | |
683 | |
684 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
685 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
686 return JNI_FALSE; | |
687 JVM_END | |
688 | |
689 | |
690 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
691 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
692 return NULL; | |
693 JVM_END | |
694 | |
695 | |
696 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
697 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
698 JVM_END | |
699 | |
700 | |
701 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
702 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
703 JVM_END | |
704 | |
705 | |
706 | |
707 // Error message support ////////////////////////////////////////////////////// | |
708 | |
709 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
710 JVMWrapper("JVM_GetLastErrorString"); | |
1980
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711 return (jint)os::lasterror(buf, len); |
0 | 712 JVM_END |
713 | |
714 | |
715 // java.io.File /////////////////////////////////////////////////////////////// | |
716 | |
717 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
718 JVMWrapper2("JVM_NativePath (%s)", path); | |
1980
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719 return os::native_path(path); |
0 | 720 JVM_END |
721 | |
722 | |
723 // Misc. class handling /////////////////////////////////////////////////////////// | |
724 | |
725 | |
726 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
727 JVMWrapper("JVM_GetCallerClass"); | |
8866
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|
728 |
12824
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
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diff
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|
729 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
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diff
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|
730 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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731 // temporarily for existing code to use until a replacement API is defined. |
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732 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
8866
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733 Klass* k = thread->security_get_caller_class(depth); |
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734 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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|
735 } |
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|
736 |
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|
737 // Getting the class of the caller frame. |
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|
738 // |
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739 // The call stack at this point looks something like this: |
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740 // |
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741 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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742 // [1] [ @CallerSensitive API.method ] |
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743 // [.] [ (skipped intermediate frames) ] |
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744 // [n] [ caller ] |
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|
745 vframeStream vfst(thread); |
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746 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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747 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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|
748 Method* m = vfst.method(); |
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|
749 assert(m != NULL, "sanity"); |
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|
750 switch (n) { |
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|
751 case 0: |
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752 // This must only be called from Reflection.getCallerClass |
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753 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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754 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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|
755 } |
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|
756 // fall-through |
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|
757 case 1: |
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|
758 // Frame 0 and 1 must be caller sensitive. |
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|
759 if (!m->caller_sensitive()) { |
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|
760 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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|
761 } |
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|
762 break; |
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|
763 default: |
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|
764 if (!m->is_ignored_by_security_stack_walk()) { |
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|
765 // We have reached the desired frame; return the holder class. |
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|
766 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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|
767 } |
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|
768 break; |
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|
769 } |
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|
770 } |
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|
771 return NULL; |
0 | 772 JVM_END |
773 | |
774 | |
775 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
776 JVMWrapper("JVM_FindPrimitiveClass"); | |
777 oop mirror = NULL; | |
778 BasicType t = name2type(utf); | |
779 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
780 mirror = Universe::java_mirror(t); | |
781 } | |
782 if (mirror == NULL) { | |
783 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
784 } else { | |
785 return (jclass) JNIHandles::make_local(env, mirror); | |
786 } | |
787 JVM_END | |
788 | |
789 | |
790 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
791 JVMWrapper("JVM_ResolveClass"); | |
792 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
793 JVM_END | |
794 | |
878
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|
795 |
20608
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|
796 JVM_ENTRY(jboolean, JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname)) |
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797 JVMWrapper("JVM_KnownToNotExist"); |
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iklam
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|
798 #if INCLUDE_CDS |
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diff
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|
799 return ClassLoaderExt::known_to_not_exist(env, loader, classname, CHECK_(false)); |
4cb90023bf2b
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iklam
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20527
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|
800 #else |
4cb90023bf2b
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20527
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|
801 return false; |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
diff
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|
802 #endif |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
diff
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|
803 JVM_END |
4cb90023bf2b
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|
804 |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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|
805 |
4cb90023bf2b
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iklam
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20527
diff
changeset
|
806 JVM_ENTRY(jobjectArray, JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader)) |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
diff
changeset
|
807 JVMWrapper("JVM_GetResourceLookupCacheURLs"); |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
diff
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|
808 #if INCLUDE_CDS |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
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20527
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|
809 return ClassLoaderExt::get_lookup_cache_urls(env, loader, CHECK_NULL); |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
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|
810 #else |
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diff
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|
811 return NULL; |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
diff
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|
812 #endif |
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parents:
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diff
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|
813 JVM_END |
4cb90023bf2b
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20527
diff
changeset
|
814 |
4cb90023bf2b
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|
815 |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
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|
816 JVM_ENTRY(jintArray, JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name)) |
4cb90023bf2b
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|
817 JVMWrapper("JVM_GetResourceLookupCache"); |
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|
818 #if INCLUDE_CDS |
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819 return ClassLoaderExt::get_lookup_cache(env, loader, resource_name, CHECK_NULL); |
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|
820 #else |
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|
821 return NULL; |
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|
822 #endif |
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|
823 JVM_END |
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|
824 |
4cb90023bf2b
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|
825 |
878
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826 // Returns a class loaded by the bootstrap class loader; or null |
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827 // if not found. ClassNotFoundException is not thrown. |
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|
828 // |
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|
829 // Rationale behind JVM_FindClassFromBootLoader |
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830 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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831 // b> because of (a) java.dll has a direct dependecy on the unexported |
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|
832 // private symbol "_JVM_FindClassFromClassLoader@20". |
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833 // c> the launcher cannot use the private symbol as it dynamically opens |
abe076e3636f
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834 // the entry point, so if something changes, the launcher will fail |
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|
835 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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875
diff
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|
836 // stable exported interface. |
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837 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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|
838 // signature to change from _JVM_FindClassFromClassLoader@20 to |
abe076e3636f
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|
839 // JVM_FindClassFromClassLoader and will not be backward compatible |
abe076e3636f
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mchung
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diff
changeset
|
840 // with older JDKs. |
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|
841 // Thus a public/stable exported entry point is the right solution, |
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842 // public here means public in linker semantics, and is exported only |
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|
843 // to the JDK, and is not intended to be a public API. |
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|
844 |
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|
845 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
abe076e3636f
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mchung
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|
846 const char* name)) |
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mchung
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diff
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|
847 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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|
848 |
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|
849 // Java libraries should ensure that name is never null... |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
850 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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851 // It's impossible to create this class; the name cannot fit |
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852 // into the constant pool. |
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853 return NULL; |
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854 } |
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855 |
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856 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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857 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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858 if (k == NULL) { |
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859 return NULL; |
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860 } |
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861 |
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862 if (TraceClassResolution) { |
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863 trace_class_resolution(k); |
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864 } |
6983 | 865 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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866 JVM_END |
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867 |
18051 | 868 // Not used; JVM_FindClassFromCaller replaces this. |
878
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869 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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870 jboolean init, jobject loader, |
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871 jboolean throwError)) |
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872 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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873 throwError ? "error" : "exception"); |
388 | 874 // Java libraries should ensure that name is never null... |
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875 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 876 // It's impossible to create this class; the name cannot fit |
877 // into the constant pool. | |
878 if (throwError) { | |
879 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
880 } else { | |
881 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
882 } | |
883 } | |
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884 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 885 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
886 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
887 Handle(), throwError, THREAD); | |
888 | |
889 if (TraceClassResolution && result != NULL) { | |
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890 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 891 } |
892 return result; | |
0 | 893 JVM_END |
894 | |
18051 | 895 // Find a class with this name in this loader, using the caller's protection domain. |
896 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
897 jboolean init, jobject loader, | |
898 jclass caller)) | |
899 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
900 // Java libraries should ensure that name is never null... | |
901 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
902 // It's impossible to create this class; the name cannot fit | |
903 // into the constant pool. | |
904 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
905 } | |
906 | |
907 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
908 | |
909 oop loader_oop = JNIHandles::resolve(loader); | |
910 oop from_class = JNIHandles::resolve(caller); | |
911 oop protection_domain = NULL; | |
912 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
913 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
914 // thus no checkPackageAccess equivalence in the VM class loader. | |
915 // The caller is also passed as NULL by the java code if there is no security | |
916 // manager to avoid the performance cost of getting the calling class. | |
917 if (from_class != NULL && loader_oop != NULL) { | |
918 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
919 } | |
920 | |
921 Handle h_loader(THREAD, loader_oop); | |
922 Handle h_prot(THREAD, protection_domain); | |
923 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
924 h_prot, false, THREAD); | |
925 | |
926 if (TraceClassResolution && result != NULL) { | |
927 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
928 } | |
929 return result; | |
930 JVM_END | |
0 | 931 |
932 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
933 jboolean init, jclass from)) | |
934 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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935 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 936 // It's impossible to create this class; the name cannot fit |
937 // into the constant pool. | |
938 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
939 } | |
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940 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 941 oop from_class_oop = JNIHandles::resolve(from); |
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942 Klass* from_class = (from_class_oop == NULL) |
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943 ? (Klass*)NULL |
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944 : java_lang_Class::as_Klass(from_class_oop); |
0 | 945 oop class_loader = NULL; |
946 oop protection_domain = NULL; | |
947 if (from_class != NULL) { | |
6983 | 948 class_loader = from_class->class_loader(); |
949 protection_domain = from_class->protection_domain(); | |
0 | 950 } |
951 Handle h_loader(THREAD, class_loader); | |
952 Handle h_prot (THREAD, protection_domain); | |
953 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
954 h_prot, true, thread); | |
955 | |
956 if (TraceClassResolution && result != NULL) { | |
957 // this function is generally only used for class loading during verification. | |
958 ResourceMark rm; | |
959 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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960 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 961 const char * from_name = from_class->external_name(); |
0 | 962 |
963 oop mirror = JNIHandles::resolve_non_null(result); | |
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964 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 965 const char * to = to_class->external_name(); |
0 | 966 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
967 } | |
968 | |
969 return result; | |
970 JVM_END | |
971 | |
972 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
973 if (loader.is_null()) { | |
974 return; | |
975 } | |
976 | |
977 // check whether the current caller thread holds the lock or not. | |
978 // If not, increment the corresponding counter | |
979 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
980 ObjectSynchronizer::owner_self) { | |
981 counter->inc(); | |
982 } | |
983 } | |
984 | |
985 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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986 // and JVM_DefineClassWithSourceCond() |
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987 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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988 jobject loader, const jbyte *buf, |
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989 jsize len, jobject pd, const char *source, |
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990 jboolean verify, TRAPS) { |
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991 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 992 |
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993 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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994 JavaThread* jt = (JavaThread*) THREAD; |
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995 |
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996 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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997 ClassLoader::perf_define_appclass_selftime(), |
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998 ClassLoader::perf_define_appclasses(), |
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999 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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1000 jt->get_thread_stat()->perf_timers_addr(), |
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1001 PerfClassTraceTime::DEFINE_CLASS); |
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1002 |
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1003 if (UsePerfData) { |
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1004 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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1005 } |
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1006 |
0 | 1007 // Since exceptions can be thrown, class initialization can take place |
1008 // if name is NULL no check for class name in .class stream has to be made. | |
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1009 TempNewSymbol class_name = NULL; |
0 | 1010 if (name != NULL) { |
1011 const int str_len = (int)strlen(name); | |
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1012 if (str_len > Symbol::max_length()) { |
0 | 1013 // It's impossible to create this class; the name cannot fit |
1014 // into the constant pool. | |
1015 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
1016 } | |
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1017 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 1018 } |
1019 | |
1020 ResourceMark rm(THREAD); | |
1021 ClassFileStream st((u1*) buf, len, (char *)source); | |
1022 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
1023 if (UsePerfData) { | |
1024 is_lock_held_by_thread(class_loader, | |
1025 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
1026 THREAD); | |
1027 } | |
1028 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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1029 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 1030 protection_domain, &st, |
973
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1031 verify != 0, |
0 | 1032 CHECK_NULL); |
1033 | |
1034 if (TraceClassResolution && k != NULL) { | |
1035 trace_class_resolution(k); | |
1036 } | |
1037 | |
6983 | 1038 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1039 } |
1040 | |
1041 | |
1042 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
1043 JVMWrapper2("JVM_DefineClass %s", name); | |
1044 | |
973
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1045 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 1046 JVM_END |
1047 | |
1048 | |
1049 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
1050 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
1051 | |
973
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1052 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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1053 JVM_END |
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1054 |
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1055 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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1056 jobject loader, const jbyte *buf, |
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1057 jsize len, jobject pd, |
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1058 const char *source, jboolean verify)) |
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1059 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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1060 |
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1061 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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1062 JVM_END |
0 | 1063 |
1064 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
1065 JVMWrapper("JVM_FindLoadedClass"); | |
1066 ResourceMark rm(THREAD); | |
1067 | |
1068 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
1069 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
1070 | |
1071 const char* str = java_lang_String::as_utf8_string(string()); | |
1072 // Sanity check, don't expect null | |
1073 if (str == NULL) return NULL; | |
1074 | |
1075 const int str_len = (int)strlen(str); | |
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1076 if (str_len > Symbol::max_length()) { |
0 | 1077 // It's impossible to create this class; the name cannot fit |
1078 // into the constant pool. | |
1079 return NULL; | |
1080 } | |
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1081 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 1082 |
1083 // Security Note: | |
1084 // The Java level wrapper will perform the necessary security check allowing | |
1085 // us to pass the NULL as the initiating class loader. | |
1086 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
1087 if (UsePerfData) { | |
1088 is_lock_held_by_thread(h_loader, | |
1089 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
1090 THREAD); | |
1091 } | |
1092 | |
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1093 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 1094 h_loader, |
1095 Handle(), | |
1096 CHECK_NULL); | |
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1097 #if INCLUDE_CDS |
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1098 if (k == NULL) { |
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1099 // If the class is not already loaded, try to see if it's in the shared |
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1100 // archive for the current classloader (h_loader). |
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1101 instanceKlassHandle ik = SystemDictionaryShared::find_or_load_shared_class( |
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1102 klass_name, h_loader, CHECK_NULL); |
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1103 k = ik(); |
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1104 } |
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1105 #endif |
0 | 1106 return (k == NULL) ? NULL : |
6983 | 1107 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1108 JVM_END |
1109 | |
1110 | |
1111 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
1112 | |
1113 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
1114 assert (cls != NULL, "illegal class"); | |
1115 JVMWrapper("JVM_GetClassName"); | |
1116 JvmtiVMObjectAllocEventCollector oam; | |
1117 ResourceMark rm(THREAD); | |
1118 const char* name; | |
1119 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1120 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
1121 } else { | |
1122 // Consider caching interned string in Klass | |
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1123 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1124 assert(k->is_klass(), "just checking"); |
6983 | 1125 name = k->external_name(); |
0 | 1126 } |
1127 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1128 return (jstring) JNIHandles::make_local(env, result); | |
1129 JVM_END | |
1130 | |
1131 | |
1132 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1133 JVMWrapper("JVM_GetClassInterfaces"); | |
1134 JvmtiVMObjectAllocEventCollector oam; | |
1135 oop mirror = JNIHandles::resolve_non_null(cls); | |
1136 | |
1137 // Special handling for primitive objects | |
1138 if (java_lang_Class::is_primitive(mirror)) { | |
1139 // Primitive objects does not have any interfaces | |
1142 | 1140 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1141 return (jobjectArray) JNIHandles::make_local(env, r); |
1142 } | |
1143 | |
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1144 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1145 // Figure size of result array |
1146 int size; | |
1147 if (klass->oop_is_instance()) { | |
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1148 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1149 } else { |
1150 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1151 size = 2; | |
1152 } | |
1153 | |
1154 // Allocate result array | |
1142 | 1155 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1156 objArrayHandle result (THREAD, r); |
1157 // Fill in result | |
1158 if (klass->oop_is_instance()) { | |
1159 // Regular instance klass, fill in all local interfaces | |
1160 for (int index = 0; index < size; index++) { | |
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1161 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1162 result->obj_at_put(index, k->java_mirror()); |
0 | 1163 } |
1164 } else { | |
1165 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1166 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1167 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1168 } |
1169 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1170 JVM_END | |
1171 | |
1172 | |
1173 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1174 JVMWrapper("JVM_GetClassLoader"); | |
1175 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1176 return NULL; | |
1177 } | |
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1178 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1179 oop loader = k->class_loader(); |
0 | 1180 return JNIHandles::make_local(env, loader); |
1181 JVM_END | |
1182 | |
1183 | |
1184 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1185 JVMWrapper("JVM_IsInterface"); | |
1186 oop mirror = JNIHandles::resolve_non_null(cls); | |
1187 if (java_lang_Class::is_primitive(mirror)) { | |
1188 return JNI_FALSE; | |
1189 } | |
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1190 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1191 jboolean result = k->is_interface(); |
1192 assert(!result || k->oop_is_instance(), | |
0 | 1193 "all interfaces are instance types"); |
1194 // The compiler intrinsic for isInterface tests the | |
1195 // Klass::_access_flags bits in the same way. | |
1196 return result; | |
1197 JVM_END | |
1198 | |
1199 | |
1200 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1201 JVMWrapper("JVM_GetClassSigners"); | |
1202 JvmtiVMObjectAllocEventCollector oam; | |
1203 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1204 // There are no signers for primitive types | |
1205 return NULL; | |
1206 } | |
1207 | |
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1208 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1209 |
1210 // If there are no signers set in the class, or if the class | |
1211 // is an array, return NULL. | |
1212 if (signers == NULL) return NULL; | |
1213 | |
1214 // copy of the signers array | |
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1215 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1216 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1217 for (int index = 0; index < signers->length(); index++) { | |
1218 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1219 } | |
1220 | |
1221 // return the copy | |
1222 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1223 JVM_END | |
1224 | |
1225 | |
1226 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1227 JVMWrapper("JVM_SetClassSigners"); | |
1228 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1229 // This call is ignored for primitive types and arrays. | |
1230 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1231 // be called with an array. Only the bootstrap loader creates arrays. | |
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1232 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1233 if (k->oop_is_instance()) { |
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1234 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1235 } |
1236 } | |
1237 JVM_END | |
1238 | |
1239 | |
1240 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1241 JVMWrapper("JVM_GetProtectionDomain"); | |
1242 if (JNIHandles::resolve(cls) == NULL) { | |
1243 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1244 } | |
1245 | |
1246 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1247 // Primitive types does not have a protection domain. | |
1248 return NULL; | |
1249 } | |
1250 | |
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1251 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1252 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1253 JVM_END |
1254 | |
1255 | |
11010 | 1256 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1257 // If there is a security manager and protection domain, check the access | |
1258 // in the protection domain, otherwise it is authorized. | |
1259 if (java_lang_System::has_security_manager()) { | |
1260 | |
1261 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1262 // this context to revert to older behavior. | |
1263 // In this case the isAuthorized field in AccessControlContext is also not | |
1264 // present. | |
1265 if (Universe::protection_domain_implies_method() == NULL) { | |
1266 return true; | |
1267 } | |
1268 | |
1269 // Whitelist certain access control contexts | |
1270 if (java_security_AccessControlContext::is_authorized(context)) { | |
1271 return true; | |
1272 } | |
1273 | |
1274 oop prot = klass->protection_domain(); | |
1275 if (prot != NULL) { | |
1276 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1277 // in the new wrapper. | |
1278 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1279 Handle h_prot(THREAD, prot); | |
1280 JavaValue result(T_BOOLEAN); | |
1281 JavaCallArguments args(h_prot); | |
1282 JavaCalls::call(&result, m, &args, CHECK_false); | |
1283 return (result.get_jboolean() != 0); | |
1284 } | |
1285 } | |
1286 return true; | |
1287 } | |
1288 | |
1289 // Create an AccessControlContext with a protection domain with null codesource | |
1290 // and null permissions - which gives no permissions. | |
1291 oop create_dummy_access_control_context(TRAPS) { | |
1292 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1293 // new ProtectionDomain(null,null); | |
1294 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1295 Handle null_pd(THREAD, null_protection_domain); | |
1296 | |
1297 // new ProtectionDomain[] {pd}; | |
1298 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1299 context->obj_at_put(0, null_pd()); | |
1300 | |
1301 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1302 objArrayHandle h_context(THREAD, context); | |
1303 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1304 return result; | |
1305 } | |
0 | 1306 |
1307 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1308 JVMWrapper("JVM_DoPrivileged"); | |
1309 | |
1310 if (action == NULL) { | |
1311 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1312 } | |
1313 | |
11010 | 1314 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1315 vframeStream vfst(thread); | |
1316 vfst.security_get_caller_frame(1); | |
1317 | |
1318 if (vfst.at_end()) { | |
1319 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1320 } | |
1321 | |
1322 Method* method = vfst.method(); | |
1323 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1324 | |
1325 // Check that action object understands "Object run()" | |
1326 Handle h_context; | |
1327 if (context != NULL) { | |
1328 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1329 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1330 if (!authorized) { | |
1331 // Create an unprivileged access control object and call it's run function | |
1332 // instead. | |
1333 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1334 h_context = Handle(THREAD, noprivs); | |
1335 } | |
1336 } | |
0 | 1337 |
1338 // Check that action object understands "Object run()" | |
1339 Handle object (THREAD, JNIHandles::resolve(action)); | |
1340 | |
1341 // get run() method | |
6983 | 1342 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1343 vmSymbols::run_method_name(), |
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1344 vmSymbols::void_object_signature(), |
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1345 Klass::normal); |
0 | 1346 methodHandle m (THREAD, m_oop); |
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1347 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1348 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1349 } | |
1350 | |
11010 | 1351 // Stack allocated list of privileged stack elements |
1352 PrivilegedElement pi; | |
0 | 1353 if (!vfst.at_end()) { |
11010 | 1354 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1355 thread->set_privileged_stack_top(&pi); |
1356 } | |
1357 | |
1358 | |
1359 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1360 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1361 Handle pending_exception; | |
1362 JavaValue result(T_OBJECT); | |
1363 JavaCallArguments args(object); | |
1364 JavaCalls::call(&result, m, &args, THREAD); | |
1365 | |
1366 // done with action, remove ourselves from the list | |
1367 if (!vfst.at_end()) { | |
1368 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1369 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1370 } | |
1371 | |
1372 if (HAS_PENDING_EXCEPTION) { | |
1373 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1374 CLEAR_PENDING_EXCEPTION; | |
1375 | |
1142 | 1376 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1377 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1378 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1379 JavaCallArguments args(pending_exception); | |
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1380 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1381 vmSymbols::exception_void_signature(), |
0 | 1382 &args); |
1383 } | |
1384 } | |
1385 | |
1386 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1387 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1388 JVM_END | |
1389 | |
1390 | |
1391 // Returns the inherited_access_control_context field of the running thread. | |
1392 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1393 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1394 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1395 return JNIHandles::make_local(env, result); | |
1396 JVM_END | |
1397 | |
1398 class RegisterArrayForGC { | |
1399 private: | |
1400 JavaThread *_thread; | |
1401 public: | |
1402 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1403 _thread = thread; | |
1404 _thread->register_array_for_gc(array); | |
1405 } | |
1406 | |
1407 ~RegisterArrayForGC() { | |
1408 _thread->register_array_for_gc(NULL); | |
1409 } | |
1410 }; | |
1411 | |
1412 | |
1413 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1414 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1415 if (!UsePrivilegedStack) return NULL; | |
1416 | |
1417 ResourceMark rm(THREAD); | |
1418 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1419 JvmtiVMObjectAllocEventCollector oam; | |
1420 | |
1421 // count the protection domains on the execution stack. We collapse | |
1422 // duplicate consecutive protection domains into a single one, as | |
1423 // well as stopping when we hit a privileged frame. | |
1424 | |
1425 // Use vframeStream to iterate through Java frames | |
1426 vframeStream vfst(thread); | |
1427 | |
1428 oop previous_protection_domain = NULL; | |
1429 Handle privileged_context(thread, NULL); | |
1430 bool is_privileged = false; | |
1431 oop protection_domain = NULL; | |
1432 | |
1433 for(; !vfst.at_end(); vfst.next()) { | |
1434 // get method of frame | |
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1435 Method* method = vfst.method(); |
0 | 1436 intptr_t* frame_id = vfst.frame_id(); |
1437 | |
1438 // check the privileged frames to see if we have a match | |
1439 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1440 // this frame is privileged | |
1441 is_privileged = true; | |
1442 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1443 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1444 } else { | |
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1445 protection_domain = method->method_holder()->protection_domain(); |
0 | 1446 } |
1447 | |
1448 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1449 local_array->push(protection_domain); | |
1450 previous_protection_domain = protection_domain; | |
1451 } | |
1452 | |
1453 if (is_privileged) break; | |
1454 } | |
1455 | |
1456 | |
1457 // either all the domains on the stack were system domains, or | |
1458 // we had a privileged system domain | |
1459 if (local_array->is_empty()) { | |
1460 if (is_privileged && privileged_context.is_null()) return NULL; | |
1461 | |
1462 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1463 return JNIHandles::make_local(env, result); | |
1464 } | |
1465 | |
1466 // the resource area must be registered in case of a gc | |
1467 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1468 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1469 local_array->length(), CHECK_NULL); |
1470 objArrayHandle h_context(thread, context); | |
1471 for (int index = 0; index < local_array->length(); index++) { | |
1472 h_context->obj_at_put(index, local_array->at(index)); | |
1473 } | |
1474 | |
1475 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1476 | |
1477 return JNIHandles::make_local(env, result); | |
1478 JVM_END | |
1479 | |
1480 | |
1481 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1482 JVMWrapper("JVM_IsArrayClass"); | |
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1483 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1484 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1485 JVM_END |
1486 | |
1487 | |
1488 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1489 JVMWrapper("JVM_IsPrimitiveClass"); | |
1490 oop mirror = JNIHandles::resolve_non_null(cls); | |
1491 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1492 JVM_END | |
1493 | |
1494 | |
1495 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1496 JVMWrapper("JVM_GetComponentType"); | |
1497 oop mirror = JNIHandles::resolve_non_null(cls); | |
1498 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1499 return (jclass) JNIHandles::make_local(env, result); | |
1500 JVM_END | |
1501 | |
1502 | |
1503 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1504 JVMWrapper("JVM_GetClassModifiers"); | |
1505 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1506 // Primitive type | |
1507 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1508 } | |
1509 | |
6983 | 1510 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1511 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1512 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1513 return k->modifier_flags(); | |
1514 JVM_END | |
1515 | |
1516 | |
1517 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1518 | |
1519 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1520 JvmtiVMObjectAllocEventCollector oam; | |
1521 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1522 // of an InstanceKlass |
0 | 1523 |
1524 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1525 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1526 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1527 return (jobjectArray)JNIHandles::make_local(env, result); |
1528 } | |
1529 | |
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1530 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1531 InnerClassesIterator iter(k); |
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1532 |
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1533 if (iter.length() == 0) { |
0 | 1534 // Neither an inner nor outer class |
1142 | 1535 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1536 return (jobjectArray)JNIHandles::make_local(env, result); |
1537 } | |
1538 | |
1539 // find inner class info | |
1540 constantPoolHandle cp(thread, k->constants()); | |
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1541 int length = iter.length(); |
0 | 1542 |
1543 // Allocate temp. result array | |
1142 | 1544 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1545 objArrayHandle result (THREAD, r); |
1546 int members = 0; | |
1547 | |
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1548 for (; !iter.done(); iter.next()) { |
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1549 int ioff = iter.inner_class_info_index(); |
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1550 int ooff = iter.outer_class_info_index(); |
0 | 1551 |
1552 if (ioff != 0 && ooff != 0) { | |
1553 // Check to see if the name matches the class we're looking for | |
1554 // before attempting to find the class. | |
1555 if (cp->klass_name_at_matches(k, ooff)) { | |
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1556 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1557 if (outer_klass == k()) { |
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1558 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1559 instanceKlassHandle inner_klass (THREAD, ik); |
1560 | |
1561 // Throws an exception if outer klass has not declared k as | |
1562 // an inner klass | |
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1563 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1564 |
1565 result->obj_at_put(members, inner_klass->java_mirror()); | |
1566 members++; | |
1567 } | |
1568 } | |
1569 } | |
1570 } | |
1571 | |
1572 if (members != length) { | |
1573 // Return array of right length | |
1142 | 1574 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1575 for(int i = 0; i < members; i++) { |
1576 res->obj_at_put(i, result->obj_at(i)); | |
1577 } | |
1578 return (jobjectArray)JNIHandles::make_local(env, res); | |
1579 } | |
1580 | |
1581 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1582 JVM_END | |
1583 | |
1584 | |
1585 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1586 { |
0 | 1587 // ofClass is a reference to a java_lang_Class object. |
1588 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1589 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1590 return NULL; |
1591 } | |
1592 | |
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1593 bool inner_is_member = false; |
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1594 Klass* outer_klass |
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1595 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1596 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1597 if (outer_klass == NULL) return NULL; // already a top-level class |
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1598 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1599 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1600 } |
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1601 JVM_END |
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1602 |
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1603 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1604 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1605 bool* inner_is_member, |
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1606 TRAPS) { |
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1607 Thread* thread = THREAD; |
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1608 InnerClassesIterator iter(k); |
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1609 if (iter.length() == 0) { |
0 | 1610 // No inner class info => no declaring class |
1611 return NULL; | |
1612 } | |
1613 | |
1614 constantPoolHandle i_cp(thread, k->constants()); | |
1615 | |
1616 bool found = false; | |
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1617 Klass* ok; |
0 | 1618 instanceKlassHandle outer_klass; |
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1619 *inner_is_member = false; |
0 | 1620 |
1621 // Find inner_klass attribute | |
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1622 for (; !iter.done() && !found; iter.next()) { |
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1623 int ioff = iter.inner_class_info_index(); |
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1624 int ooff = iter.outer_class_info_index(); |
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1625 int noff = iter.inner_name_index(); |
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1626 if (ioff != 0) { |
0 | 1627 // Check to see if the name matches the class we're looking for |
1628 // before attempting to find the class. | |
1629 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1630 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1631 found = (k() == inner_klass); |
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1632 if (found && ooff != 0) { |
0 | 1633 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1634 outer_klass = instanceKlassHandle(thread, ok); | |
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1635 *inner_is_member = true; |
0 | 1636 } |
1637 } | |
1638 } | |
1639 } | |
1640 | |
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1641 if (found && outer_klass.is_null()) { |
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1642 // It may be anonymous; try for that. |
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1643 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1644 if (encl_method_class_idx != 0) { |
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1645 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1646 outer_klass = instanceKlassHandle(thread, ok); |
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1647 *inner_is_member = false; |
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1648 } |
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1649 } |
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1650 |
0 | 1651 // If no inner class attribute found for this class. |
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1652 if (outer_klass.is_null()) return NULL; |
0 | 1653 |
1654 // Throws an exception if outer klass has not declared k as an inner klass | |
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1655 // We need evidence that each klass knows about the other, or else |
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1656 // the system could allow a spoof of an inner class to gain access rights. |
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1657 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1658 return outer_klass(); |
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1659 } |
0 | 1660 |
1661 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1662 assert (cls != NULL, "illegal class"); | |
1663 JVMWrapper("JVM_GetClassSignature"); | |
1664 JvmtiVMObjectAllocEventCollector oam; | |
1665 ResourceMark rm(THREAD); | |
1666 // Return null for arrays and primatives | |
1667 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1668 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1669 if (k->oop_is_instance()) { |
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1670 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1671 if (sym == NULL) return NULL; |
0 | 1672 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1673 return (jstring) JNIHandles::make_local(env, str()); | |
1674 } | |
1675 } | |
1676 return NULL; | |
1677 JVM_END | |
1678 | |
1679 | |
1680 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1681 assert (cls != NULL, "illegal class"); | |
1682 JVMWrapper("JVM_GetClassAnnotations"); | |
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1683 |
0 | 1684 // Return null for arrays and primitives |
1685 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1686 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1687 if (k->oop_is_instance()) { |
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1688 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1689 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1690 } |
1691 } | |
1692 return NULL; | |
1693 JVM_END | |
1694 | |
1695 | |
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1696 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1697 // some of this code was adapted from from jni_FromReflectedField |
1698 | |
1699 oop reflected = JNIHandles::resolve_non_null(field); | |
1700 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1701 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1702 int slot = java_lang_reflect_Field::slot(reflected); |
1703 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1704 | |
1705 KlassHandle kh(THREAD, k); | |
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1706 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1707 |
1708 if (modifiers & JVM_ACC_STATIC) { | |
1709 // for static fields we only look in the current class | |
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1710 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1711 assert(false, "cannot find static field"); |
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1712 return false; |
0 | 1713 } |
1714 } else { | |
1715 // for instance fields we start with the current class and work | |
1716 // our way up through the superclass chain | |
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1717 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1718 assert(false, "cannot find instance field"); |
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1719 return false; |
0 | 1720 } |
1721 } | |
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1722 return true; |
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1723 } |
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1724 |
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1725 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1726 // field is a handle to a java.lang.reflect.Field object |
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1727 assert(field != NULL, "illegal field"); |
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1728 JVMWrapper("JVM_GetFieldAnnotations"); |
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1729 |
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1730 fieldDescriptor fd; |
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1731 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1732 if (!gotFd) { |
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1733 return NULL; |
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1734 } |
0 | 1735 |
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1736 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1737 JVM_END |
1738 | |
1739 | |
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1740 static Method* jvm_get_method_common(jobject method) { |
0 | 1741 // some of this code was adapted from from jni_FromReflectedMethod |
1742 | |
1743 oop reflected = JNIHandles::resolve_non_null(method); | |
1744 oop mirror = NULL; | |
1745 int slot = 0; | |
1746 | |
1142 | 1747 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1748 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1749 slot = java_lang_reflect_Constructor::slot(reflected); | |
1750 } else { | |
1142 | 1751 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1752 "wrong type"); |
1753 mirror = java_lang_reflect_Method::clazz(reflected); | |
1754 slot = java_lang_reflect_Method::slot(reflected); | |
1755 } | |
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1756 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1757 |
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1758 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1759 assert(m != NULL, "cannot find method"); |
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1760 return m; // caller has to deal with NULL in product mode |
0 | 1761 } |
1762 | |
1763 | |
1764 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1765 JVMWrapper("JVM_GetMethodAnnotations"); | |
1766 | |
1767 // method is a handle to a java.lang.reflect.Method object | |
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1768 Method* m = jvm_get_method_common(method); |
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1769 if (m == NULL) { |
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1770 return NULL; |
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1771 } |
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1772 |
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1773 return (jbyteArray) JNIHandles::make_local(env, |
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1774 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1775 JVM_END |
1776 | |
1777 | |
1778 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1779 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1780 | |
1781 // method is a handle to a java.lang.reflect.Method object | |
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1782 Method* m = jvm_get_method_common(method); |
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1783 if (m == NULL) { |
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1784 return NULL; |
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1785 } |
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1786 |
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1787 return (jbyteArray) JNIHandles::make_local(env, |
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1788 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1789 JVM_END |
1790 | |
1791 | |
1792 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1793 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1794 | |
1795 // method is a handle to a java.lang.reflect.Method object | |
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1796 Method* m = jvm_get_method_common(method); |
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1797 if (m == NULL) { |
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1798 return NULL; |
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1799 } |
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1800 |
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1801 return (jbyteArray) JNIHandles::make_local(env, |
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1802 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1803 JVM_END |
1804 | |
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1805 /* Type use annotations support (JDK 1.8) */ |
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1806 |
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1807 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1808 assert (cls != NULL, "illegal class"); |
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1809 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1810 ResourceMark rm(THREAD); |
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1811 // Return null for arrays and primitives |
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1812 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1813 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1814 if (k->oop_is_instance()) { |
8031 | 1815 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1816 if (type_annotations != NULL) { |
8031 | 1817 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1818 return (jbyteArray) JNIHandles::make_local(env, a); |
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1819 } |
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1820 } |
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1821 } |
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1822 return NULL; |
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1823 JVM_END |
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1824 |
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1825 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1826 assert (method != NULL, "illegal method"); |
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1827 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1828 |
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1829 // method is a handle to a java.lang.reflect.Method object |
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1830 Method* m = jvm_get_method_common(method); |
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1831 if (m == NULL) { |
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1832 return NULL; |
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1833 } |
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1834 |
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1835 AnnotationArray* type_annotations = m->type_annotations(); |
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1836 if (type_annotations != NULL) { |
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1837 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1838 return (jbyteArray) JNIHandles::make_local(env, a); |
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1839 } |
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1840 |
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1841 return NULL; |
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1842 JVM_END |
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1843 |
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1844 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1845 assert (field != NULL, "illegal field"); |
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1846 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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1847 |
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1848 fieldDescriptor fd; |
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1849 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1850 if (!gotFd) { |
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1851 return NULL; |
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|
1852 } |
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1853 |
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1854 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1855 JVM_END |
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1856 |
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1857 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1858 if (!cp->is_within_bounds(index)) { |
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1859 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1860 } |
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1861 } |
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1862 |
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1863 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1864 { |
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1865 JVMWrapper("JVM_GetMethodParameters"); |
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1866 // method is a handle to a java.lang.reflect.Method object |
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1867 Method* method_ptr = jvm_get_method_common(method); |
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1868 methodHandle mh (THREAD, method_ptr); |
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1869 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1870 const int num_params = mh->method_parameters_length(); |
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1871 |
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1872 if (0 != num_params) { |
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1873 // make sure all the symbols are properly formatted |
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1874 for (int i = 0; i < num_params; i++) { |
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1875 MethodParametersElement* params = mh->method_parameters_start(); |
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1876 int index = params[i].name_cp_index; |
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1877 bounds_check(mh->constants(), index, CHECK_NULL); |
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1878 |
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1879 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1880 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1881 "Wrong type at constant pool index"); |
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1882 } |
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1883 |
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1884 } |
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1885 |
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1886 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1887 objArrayHandle result (THREAD, result_oop); |
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1888 |
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1889 for (int i = 0; i < num_params; i++) { |
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1890 MethodParametersElement* params = mh->method_parameters_start(); |
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1891 // For a 0 index, give a NULL symbol |
10265
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1892 Symbol* sym = 0 != params[i].name_cp_index ? |
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1893 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
7983
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1894 int flags = params[i].flags; |
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1895 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1896 flags, CHECK_NULL); |
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|
1897 result->obj_at_put(i, param); |
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1898 } |
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1899 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1900 } else { |
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1901 return (jobjectArray)NULL; |
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1902 } |
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1903 } |
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1904 JVM_END |
0 | 1905 |
1906 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1907 | |
1908 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1909 { | |
1910 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1911 JvmtiVMObjectAllocEventCollector oam; | |
1912 | |
1913 // Exclude primitive types and array types | |
1914 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1915 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1916 // Return empty array |
1142 | 1917 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1918 return (jobjectArray) JNIHandles::make_local(env, res); |
1919 } | |
1920 | |
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1921 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1922 constantPoolHandle cp(THREAD, k->constants()); |
1923 | |
1924 // Ensure class is linked | |
1925 k->link_class(CHECK_NULL); | |
1926 | |
1927 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1928 bool skip_backtrace = false; | |
1929 | |
1930 // Allocate result | |
1931 int num_fields; | |
1932 | |
1933 if (publicOnly) { | |
1934 num_fields = 0; | |
3938 | 1935 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1936 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1937 } |
1938 } else { | |
3938 | 1939 num_fields = k->java_fields_count(); |
0 | 1940 |
1142 | 1941 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1942 num_fields--; |
1943 skip_backtrace = true; | |
1944 } | |
1945 } | |
1946 | |
1142 | 1947 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1948 objArrayHandle result (THREAD, r); |
1949 | |
1950 int out_idx = 0; | |
1951 fieldDescriptor fd; | |
3938 | 1952 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1953 if (skip_backtrace) { |
1954 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1955 int offset = fs.offset(); |
0 | 1956 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1957 } | |
1958 | |
3938 | 1959 if (!publicOnly || fs.access_flags().is_public()) { |
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1960 fd.reinitialize(k(), fs.index()); |
0 | 1961 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1962 result->obj_at_put(out_idx, field); | |
1963 ++out_idx; | |
1964 } | |
1965 } | |
1966 assert(out_idx == num_fields, "just checking"); | |
1967 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1968 } | |
1969 JVM_END | |
1970 | |
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1971 static bool select_method(methodHandle method, bool want_constructor) { |
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1972 if (want_constructor) { |
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1973 return (method->is_initializer() && !method->is_static()); |
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1974 } else { |
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1975 return (!method->is_initializer() && !method->is_overpass()); |
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1976 } |
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1977 } |
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1978 |
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1979 static jobjectArray get_class_declared_methods_helper( |
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1980 JNIEnv *env, |
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1981 jclass ofClass, jboolean publicOnly, |
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1982 bool want_constructor, |
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1983 Klass* klass, TRAPS) { |
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1984 |
0 | 1985 JvmtiVMObjectAllocEventCollector oam; |
1986 | |
1987 // Exclude primitive types and array types | |
1988 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1989 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1990 // Return empty array |
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1991 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1992 return (jobjectArray) JNIHandles::make_local(env, res); |
1993 } | |
1994 | |
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1995 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1996 |
1997 // Ensure class is linked | |
1998 k->link_class(CHECK_NULL); | |
1999 | |
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2000 Array<Method*>* methods = k->methods(); |
0 | 2001 int methods_length = methods->length(); |
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2002 |
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2003 // Save original method_idnum in case of redefinition, which can change |
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2004 // the idnum of obsolete methods. The new method will have the same idnum |
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2005 // but if we refresh the methods array, the counts will be wrong. |
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2006 ResourceMark rm(THREAD); |
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2007 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 2008 int num_methods = 0; |
2009 | |
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2010 for (int i = 0; i < methods_length; i++) { |
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2011 methodHandle method(THREAD, methods->at(i)); |
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2012 if (select_method(method, want_constructor)) { |
0 | 2013 if (!publicOnly || method->is_public()) { |
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2014 idnums->push(method->method_idnum()); |
0 | 2015 ++num_methods; |
2016 } | |
2017 } | |
2018 } | |
2019 | |
2020 // Allocate result | |
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2021 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 2022 objArrayHandle result (THREAD, r); |
2023 | |
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2024 // Now just put the methods that we selected above, but go by their idnum |
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2025 // in case of redefinition. The methods can be redefined at any safepoint, |
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2026 // so above when allocating the oop array and below when creating reflect |
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2027 // objects. |
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2028 for (int i = 0; i < num_methods; i++) { |
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2029 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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2030 if (method.is_null()) { |
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2031 // Method may have been deleted and seems this API can handle null |
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2032 // Otherwise should probably put a method that throws NSME |
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2033 result->obj_at_put(i, NULL); |
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2034 } else { |
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2035 oop m; |
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2036 if (want_constructor) { |
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2037 m = Reflection::new_constructor(method, CHECK_NULL); |
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2038 } else { |
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2039 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 2040 } |
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2041 result->obj_at_put(i, m); |
0 | 2042 } |
2043 } | |
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2044 |
0 | 2045 return (jobjectArray) JNIHandles::make_local(env, result()); |
2046 } | |
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2047 |
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2048 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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2049 { |
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2050 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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2051 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2052 /*want_constructor*/ false, |
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2053 SystemDictionary::reflect_Method_klass(), THREAD); |
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2054 } |
0 | 2055 JVM_END |
2056 | |
2057 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
2058 { | |
2059 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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2060 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2061 /*want_constructor*/ true, |
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2062 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 2063 } |
2064 JVM_END | |
2065 | |
2066 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
2067 { | |
2068 JVMWrapper("JVM_GetClassAccessFlags"); | |
2069 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
2070 // Primitive type | |
2071 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
2072 } | |
2073 | |
6983 | 2074 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2075 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
2076 } | |
2077 JVM_END | |
2078 | |
2079 | |
2080 // Constant pool access ////////////////////////////////////////////////////////// | |
2081 | |
2082 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
2083 { | |
2084 JVMWrapper("JVM_GetClassConstantPool"); | |
2085 JvmtiVMObjectAllocEventCollector oam; | |
2086 | |
2087 // Return null for primitives and arrays | |
2088 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2089 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 2090 if (k->oop_is_instance()) { |
0 | 2091 instanceKlassHandle k_h(THREAD, k); |
2092 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2093 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 2094 return JNIHandles::make_local(jcp()); |
2095 } | |
2096 } | |
2097 return NULL; | |
2098 } | |
2099 JVM_END | |
2100 | |
2101 | |
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2102 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 2103 { |
2104 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2105 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2106 return cp->length(); |
2107 } | |
2108 JVM_END | |
2109 | |
2110 | |
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2111 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2112 { |
2113 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2114 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2115 bounds_check(cp, index, CHECK_NULL); |
2116 constantTag tag = cp->tag_at(index); | |
2117 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2118 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2119 } | |
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2120 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2121 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2122 } |
2123 JVM_END | |
2124 | |
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2125 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2126 { |
2127 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2128 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2129 bounds_check(cp, index, CHECK_NULL); |
2130 constantTag tag = cp->tag_at(index); | |
2131 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2132 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2133 } | |
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2134 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2135 if (k == NULL) return NULL; |
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2136 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2137 } |
2138 JVM_END | |
2139 | |
2140 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2141 constantTag tag = cp->tag_at(index); | |
2142 if (!tag.is_method() && !tag.is_interface_method()) { | |
2143 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2144 } | |
2145 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2146 Klass* k_o; |
0 | 2147 if (force_resolution) { |
2148 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2149 } else { | |
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2150 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2151 if (k_o == NULL) return NULL; |
2152 } | |
2153 instanceKlassHandle k(THREAD, k_o); | |
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2154 Symbol* name = cp->uncached_name_ref_at(index); |
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2155 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2156 methodHandle m (THREAD, k->find_method(name, sig)); |
2157 if (m.is_null()) { | |
2158 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2159 } | |
2160 oop method; | |
2161 if (!m->is_initializer() || m->is_static()) { | |
2162 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2163 } else { | |
2164 method = Reflection::new_constructor(m, CHECK_NULL); | |
2165 } | |
2166 return JNIHandles::make_local(method); | |
2167 } | |
2168 | |
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2169 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2170 { |
2171 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2172 JvmtiVMObjectAllocEventCollector oam; | |
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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_NULL); |
2175 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2176 return res; | |
2177 } | |
2178 JVM_END | |
2179 | |
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2180 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2181 { |
2182 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2183 JvmtiVMObjectAllocEventCollector oam; | |
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2184 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2185 bounds_check(cp, index, CHECK_NULL); |
2186 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2187 return res; | |
2188 } | |
2189 JVM_END | |
2190 | |
2191 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2192 constantTag tag = cp->tag_at(index); | |
2193 if (!tag.is_field()) { | |
2194 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2195 } | |
2196 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2197 Klass* k_o; |
0 | 2198 if (force_resolution) { |
2199 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2200 } else { | |
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2201 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2202 if (k_o == NULL) return NULL; |
2203 } | |
2204 instanceKlassHandle k(THREAD, k_o); | |
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2205 Symbol* name = cp->uncached_name_ref_at(index); |
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2206 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2207 fieldDescriptor fd; |
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2208 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2209 if (target_klass == NULL) { |
2210 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2211 } | |
2212 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2213 return JNIHandles::make_local(field); | |
2214 } | |
2215 | |
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2216 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2217 { |
2218 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2219 JvmtiVMObjectAllocEventCollector oam; | |
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2220 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2221 bounds_check(cp, index, CHECK_NULL); |
2222 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2223 return res; | |
2224 } | |
2225 JVM_END | |
2226 | |
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2227 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2228 { |
2229 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2230 JvmtiVMObjectAllocEventCollector oam; | |
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2231 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2232 bounds_check(cp, index, CHECK_NULL); |
2233 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2234 return res; | |
2235 } | |
2236 JVM_END | |
2237 | |
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2238 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2239 { |
2240 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2241 JvmtiVMObjectAllocEventCollector oam; | |
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2242 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2243 bounds_check(cp, index, CHECK_NULL); |
2244 constantTag tag = cp->tag_at(index); | |
2245 if (!tag.is_field_or_method()) { | |
2246 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2247 } | |
2248 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2249 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2250 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2251 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2252 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2253 objArrayHandle dest(THREAD, dest_o); |
2254 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2255 dest->obj_at_put(0, str()); | |
2256 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2257 dest->obj_at_put(1, str()); | |
2258 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2259 dest->obj_at_put(2, str()); | |
2260 return (jobjectArray) JNIHandles::make_local(dest()); | |
2261 } | |
2262 JVM_END | |
2263 | |
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2264 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2265 { |
2266 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2267 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2268 bounds_check(cp, index, CHECK_0); |
2269 constantTag tag = cp->tag_at(index); | |
2270 if (!tag.is_int()) { | |
2271 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2272 } | |
2273 return cp->int_at(index); | |
2274 } | |
2275 JVM_END | |
2276 | |
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2277 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2278 { |
2279 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2280 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2281 bounds_check(cp, index, CHECK_(0L)); |
2282 constantTag tag = cp->tag_at(index); | |
2283 if (!tag.is_long()) { | |
2284 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2285 } | |
2286 return cp->long_at(index); | |
2287 } | |
2288 JVM_END | |
2289 | |
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2290 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2291 { |
2292 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2293 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2294 bounds_check(cp, index, CHECK_(0.0f)); |
2295 constantTag tag = cp->tag_at(index); | |
2296 if (!tag.is_float()) { | |
2297 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2298 } | |
2299 return cp->float_at(index); | |
2300 } | |
2301 JVM_END | |
2302 | |
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2303 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2304 { |
2305 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2306 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2307 bounds_check(cp, index, CHECK_(0.0)); |
2308 constantTag tag = cp->tag_at(index); | |
2309 if (!tag.is_double()) { | |
2310 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2311 } | |
2312 return cp->double_at(index); | |
2313 } | |
2314 JVM_END | |
2315 | |
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2316 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2317 { |
2318 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2319 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2320 bounds_check(cp, index, CHECK_NULL); |
2321 constantTag tag = cp->tag_at(index); | |
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2322 if (!tag.is_string()) { |
0 | 2323 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2324 } | |
2325 oop str = cp->string_at(index, CHECK_NULL); | |
2326 return (jstring) JNIHandles::make_local(str); | |
2327 } | |
2328 JVM_END | |
2329 | |
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2330 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2331 { |
2332 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2333 JvmtiVMObjectAllocEventCollector oam; | |
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2334 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2335 bounds_check(cp, index, CHECK_NULL); |
2336 constantTag tag = cp->tag_at(index); | |
2337 if (!tag.is_symbol()) { | |
2338 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2339 } | |
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2340 Symbol* sym = cp->symbol_at(index); |
0 | 2341 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2342 return (jstring) JNIHandles::make_local(str()); | |
2343 } | |
2344 JVM_END | |
2345 | |
2346 | |
2347 // Assertion support. ////////////////////////////////////////////////////////// | |
2348 | |
2349 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2350 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2351 assert(cls != NULL, "bad class"); | |
2352 | |
2353 oop r = JNIHandles::resolve(cls); | |
2354 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2355 if (java_lang_Class::is_primitive(r)) return false; | |
2356 | |
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2357 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2358 assert(k->oop_is_instance(), "must be an instance klass"); |
2359 if (! k->oop_is_instance()) return false; | |
0 | 2360 |
2361 ResourceMark rm(THREAD); | |
6983 | 2362 const char* name = k->name()->as_C_string(); |
2363 bool system_class = k->class_loader() == NULL; | |
0 | 2364 return JavaAssertions::enabled(name, system_class); |
2365 | |
2366 JVM_END | |
2367 | |
2368 | |
2369 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2370 // command-line assertion arguments (i.e., -ea, -da). | |
2371 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2372 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2373 JvmtiVMObjectAllocEventCollector oam; | |
2374 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2375 return JNIHandles::make_local(env, asd); | |
2376 JVM_END | |
2377 | |
2378 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2379 | |
2380 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2381 | |
2382 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2383 // All functions from this section should call the jvmtiThreadSate function: | |
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2384 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2385 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2386 // was invoked in the middle of the class redefinition. |
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2387 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2388 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2389 | |
2390 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2391 JVMWrapper("JVM_GetClassNameUTF"); | |
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2392 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2393 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2394 return k->name()->as_utf8(); |
0 | 2395 JVM_END |
2396 | |
2397 | |
2398 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2399 JVMWrapper("JVM_GetClassCPTypes"); | |
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2400 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2401 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2402 // types will have length zero if this is not an InstanceKlass |
0 | 2403 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2404 if (k->oop_is_instance()) { |
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2405 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2406 for (int index = cp->length() - 1; index >= 0; index--) { |
2407 constantTag tag = cp->tag_at(index); | |
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2408 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2409 } |
2410 } | |
2411 JVM_END | |
2412 | |
2413 | |
2414 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2415 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2416 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2417 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2418 if (!k->oop_is_instance()) |
0 | 2419 return 0; |
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2420 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2421 JVM_END |
2422 | |
2423 | |
2424 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2425 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2426 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2427 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2428 if (!k->oop_is_instance()) |
0 | 2429 return 0; |
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|
2430 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2431 JVM_END |
2432 | |
2433 | |
2434 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2435 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2436 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2437 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2438 if (!k->oop_is_instance()) |
0 | 2439 return 0; |
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2440 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2441 JVM_END |
2442 | |
2443 | |
2444 // The following methods, used for the verifier, are never called with | |
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2445 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2446 // Typically, these methods are called in a loop with bounds determined |
2447 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2448 // zero for arrays. | |
2449 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2450 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2451 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2452 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2453 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2454 int length = method->checked_exceptions_length(); |
0 | 2455 if (length > 0) { |
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2456 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2457 for (int i = 0; i < length; i++) { |
2458 exceptions[i] = table[i].class_cp_index; | |
2459 } | |
2460 } | |
2461 JVM_END | |
2462 | |
2463 | |
2464 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2465 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2466 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2467 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2468 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2469 return method->checked_exceptions_length(); |
0 | 2470 JVM_END |
2471 | |
2472 | |
2473 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2474 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2475 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2476 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2477 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2478 memcpy(code, method->code_base(), method->code_size()); |
0 | 2479 JVM_END |
2480 | |
2481 | |
2482 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2483 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2484 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2485 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2486 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2487 return method->code_size(); |
0 | 2488 JVM_END |
2489 | |
2490 | |
2491 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2492 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2493 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2494 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2495 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2496 ExceptionTable extable(method); |
6213
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2497 entry->start_pc = extable.start_pc(entry_index); |
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2498 entry->end_pc = extable.end_pc(entry_index); |
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2499 entry->handler_pc = extable.handler_pc(entry_index); |
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2500 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2501 JVM_END |
2502 | |
2503 | |
2504 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2505 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2506 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2507 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2508 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2509 return method->exception_table_length(); |
0 | 2510 JVM_END |
2511 | |
2512 | |
2513 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2514 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2515 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2516 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2517 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2518 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2519 JVM_END |
2520 | |
2521 | |
2522 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2523 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2524 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2525 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2526 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2527 JVM_END |
2528 | |
2529 | |
2530 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2531 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2532 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2533 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2534 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2535 return method->max_locals(); |
0 | 2536 JVM_END |
2537 | |
2538 | |
2539 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2540 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2541 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2542 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2543 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2544 return method->size_of_parameters(); |
0 | 2545 JVM_END |
2546 | |
2547 | |
2548 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2549 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2550 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2551 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2552 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2553 return method->verifier_max_stack(); |
0 | 2554 JVM_END |
2555 | |
2556 | |
2557 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2558 JVMWrapper("JVM_IsConstructorIx"); | |
2559 ResourceMark rm(THREAD); | |
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2560 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2561 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2562 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2563 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2564 JVM_END |
2565 | |
2566 | |
7958
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|
2567 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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|
2568 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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|
2569 ResourceMark rm(THREAD); |
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|
2570 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2571 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2572 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2573 return method->is_overpass(); |
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|
2574 JVM_END |
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2575 |
0 | 2576 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2577 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2578 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2579 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2580 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2581 return method->name()->as_utf8(); |
0 | 2582 JVM_END |
2583 | |
2584 | |
2585 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2586 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2587 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2588 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2589 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2590 return method->signature()->as_utf8(); |
0 | 2591 JVM_END |
2592 | |
2593 /** | |
2594 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2595 * read entries in the constant pool. Since the old verifier always | |
2596 * works on a copy of the code, it will not see any rewriting that | |
2597 * may possibly occur in the middle of verification. So it is important | |
2598 * that nothing it calls tries to use the cpCache instead of the raw | |
2599 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2600 */ | |
2601 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2602 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2603 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2604 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2605 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2606 switch (cp->tag_at(cp_index).value()) { |
2607 case JVM_CONSTANT_Fieldref: | |
2608 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2609 default: | |
2610 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2611 } | |
2612 ShouldNotReachHere(); | |
2613 return NULL; | |
2614 JVM_END | |
2615 | |
2616 | |
2617 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2618 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2619 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2620 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2621 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2622 switch (cp->tag_at(cp_index).value()) { |
2623 case JVM_CONSTANT_InterfaceMethodref: | |
2624 case JVM_CONSTANT_Methodref: | |
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2625 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2626 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2627 default: | |
2628 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2629 } | |
2630 ShouldNotReachHere(); | |
2631 return NULL; | |
2632 JVM_END | |
2633 | |
2634 | |
2635 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2636 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2637 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2638 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2639 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2640 switch (cp->tag_at(cp_index).value()) { |
2641 case JVM_CONSTANT_InterfaceMethodref: | |
2642 case JVM_CONSTANT_Methodref: | |
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2643 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2644 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2645 default: | |
2646 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2647 } | |
2648 ShouldNotReachHere(); | |
2649 return NULL; | |
2650 JVM_END | |
2651 | |
2652 | |
2653 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2654 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2655 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2656 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2657 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2658 switch (cp->tag_at(cp_index).value()) { |
2659 case JVM_CONSTANT_Fieldref: | |
2660 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2661 default: | |
2662 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2663 } | |
2664 ShouldNotReachHere(); | |
2665 return NULL; | |
2666 JVM_END | |
2667 | |
2668 | |
2669 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2670 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2671 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2672 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2673 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2674 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2675 return classname->as_utf8(); |
2676 JVM_END | |
2677 | |
2678 | |
2679 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2680 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2681 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2682 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2683 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2684 switch (cp->tag_at(cp_index).value()) { |
2685 case JVM_CONSTANT_Fieldref: { | |
2686 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2687 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2688 return classname->as_utf8(); |
2689 } | |
2690 default: | |
2691 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2692 } | |
2693 ShouldNotReachHere(); | |
2694 return NULL; | |
2695 JVM_END | |
2696 | |
2697 | |
2698 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2699 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2700 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2701 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2702 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2703 switch (cp->tag_at(cp_index).value()) { |
2704 case JVM_CONSTANT_Methodref: | |
2705 case JVM_CONSTANT_InterfaceMethodref: { | |
2706 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2707 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2708 return classname->as_utf8(); |
2709 } | |
2710 default: | |
2711 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2712 } | |
2713 ShouldNotReachHere(); | |
2714 return NULL; | |
2715 JVM_END | |
2716 | |
2717 | |
3938 | 2718 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2719 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2720 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2721 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2722 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2723 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2724 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2725 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2726 switch (cp->tag_at(cp_index).value()) { |
2727 case JVM_CONSTANT_Fieldref: { | |
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2728 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2729 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2730 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2731 if (fs.name() == name && fs.signature() == signature) { | |
2732 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2733 } |
2734 } | |
2735 return -1; | |
2736 } | |
2737 default: | |
2738 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2739 } | |
2740 ShouldNotReachHere(); | |
2741 return 0; | |
2742 JVM_END | |
2743 | |
2744 | |
2745 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2746 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2747 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2748 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2749 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2750 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2751 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2752 switch (cp->tag_at(cp_index).value()) { |
2753 case JVM_CONSTANT_Methodref: | |
2754 case JVM_CONSTANT_InterfaceMethodref: { | |
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2755 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2756 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2757 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2758 int methods_count = methods->length(); |
2759 for (int i = 0; i < methods_count; i++) { | |
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2760 Method* method = methods->at(i); |
0 | 2761 if (method->name() == name && method->signature() == signature) { |
2762 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2763 } | |
2764 } | |
2765 return -1; | |
2766 } | |
2767 default: | |
2768 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2769 } | |
2770 ShouldNotReachHere(); | |
2771 return 0; | |
2772 JVM_END | |
2773 | |
2774 | |
2775 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2776 | |
2777 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2778 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2779 JVM_END | |
2780 | |
2781 | |
2782 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2783 JVMWrapper("JVM_IsSameClassPackage"); | |
2784 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2785 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2786 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2787 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2788 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2789 JVM_END | |
2790 | |
2791 | |
2792 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2793 | |
2794 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2795 JVMWrapper2("JVM_Open (%s)", fname); | |
2796 | |
2797 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2798 int result = os::open(fname, flags, mode); |
0 | 2799 if (result >= 0) { |
2800 return result; | |
2801 } else { | |
2802 switch(errno) { | |
2803 case EEXIST: | |
2804 return JVM_EEXIST; | |
2805 default: | |
2806 return -1; | |
2807 } | |
2808 } | |
2809 JVM_END | |
2810 | |
2811 | |
2812 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2813 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2814 //%note jvm_r6 | |
1980
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diff
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|
2815 return os::close(fd); |
0 | 2816 JVM_END |
2817 | |
2818 | |
2819 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2820 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2821 | |
2822 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2823 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2824 JVM_END |
2825 | |
2826 | |
2827 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2828 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2829 | |
2830 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
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|
2831 return (jint)os::write(fd, buf, nbytes); |
0 | 2832 JVM_END |
2833 | |
2834 | |
2835 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2836 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2837 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2838 return os::available(fd, pbytes); |
0 | 2839 JVM_END |
2840 | |
2841 | |
2842 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
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|
2843 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
0 | 2844 //%note jvm_r6 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2845 return os::lseek(fd, offset, whence); |
0 | 2846 JVM_END |
2847 | |
2848 | |
2849 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
17937
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drchase
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diff
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|
2850 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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1972
diff
changeset
|
2851 return os::ftruncate(fd, length); |
0 | 2852 JVM_END |
2853 | |
2854 | |
2855 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2856 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2857 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2858 return os::fsync(fd); |
0 | 2859 JVM_END |
2860 | |
2861 | |
2862 // Printing support ////////////////////////////////////////////////// | |
2863 extern "C" { | |
2864 | |
17937
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drchase
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diff
changeset
|
2865 ATTRIBUTE_PRINTF(3, 0) |
0 | 2866 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
2867 // see bug 4399518, 4417214 | |
2868 if ((intptr_t)count <= 0) return -1; | |
2869 return vsnprintf(str, count, fmt, args); | |
2870 } | |
2871 | |
17937
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|
2872 ATTRIBUTE_PRINTF(3, 0) |
0 | 2873 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
2874 va_list args; | |
2875 int len; | |
2876 va_start(args, fmt); | |
2877 len = jio_vsnprintf(str, count, fmt, args); | |
2878 va_end(args); | |
2879 return len; | |
2880 } | |
2881 | |
17937
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diff
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|
2882 ATTRIBUTE_PRINTF(2,3) |
0 | 2883 int jio_fprintf(FILE* f, const char *fmt, ...) { |
2884 int len; | |
2885 va_list args; | |
2886 va_start(args, fmt); | |
2887 len = jio_vfprintf(f, fmt, args); | |
2888 va_end(args); | |
2889 return len; | |
2890 } | |
2891 | |
17937
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|
2892 ATTRIBUTE_PRINTF(2, 0) |
0 | 2893 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
2894 if (Arguments::vfprintf_hook() != NULL) { | |
2895 return Arguments::vfprintf_hook()(f, fmt, args); | |
2896 } else { | |
2897 return vfprintf(f, fmt, args); | |
2898 } | |
2899 } | |
2900 | |
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|
2901 ATTRIBUTE_PRINTF(1, 2) |
2191 | 2902 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2903 int len; |
2904 va_list args; | |
2905 va_start(args, fmt); | |
2906 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2907 va_end(args); | |
2908 return len; | |
2909 } | |
2910 | |
2911 | |
2912 // HotSpot specific jio method | |
2913 void jio_print(const char* s) { | |
2914 // Try to make this function as atomic as possible. | |
2915 if (Arguments::vfprintf_hook() != NULL) { | |
2916 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2917 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2918 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
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|
2919 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2920 } |
2921 } | |
2922 | |
2923 } // Extern C | |
2924 | |
2925 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2926 | |
2927 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2928 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2929 // OSThread objects. The exception to this rule is when the target object is the thread | |
2930 // doing the operation, in which case we know that the thread won't exit until the | |
2931 // operation is done (all exits being voluntary). There are a few cases where it is | |
2932 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2933 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2934 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2935 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2936 // implementation is local to this file, we always lock Threads_lock for that one. | |
2937 | |
2938 static void thread_entry(JavaThread* thread, TRAPS) { | |
2939 HandleMark hm(THREAD); | |
2940 Handle obj(THREAD, thread->threadObj()); | |
2941 JavaValue result(T_VOID); | |
2942 JavaCalls::call_virtual(&result, | |
2943 obj, | |
1142 | 2944 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
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|
2945 vmSymbols::run_method_name(), |
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|
2946 vmSymbols::void_method_signature(), |
0 | 2947 THREAD); |
2948 } | |
2949 | |
2950 | |
2951 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2952 JVMWrapper("JVM_StartThread"); | |
2953 JavaThread *native_thread = NULL; | |
2954 | |
2955 // We cannot hold the Threads_lock when we throw an exception, | |
2956 // due to rank ordering issues. Example: we might need to grab the | |
2957 // Heap_lock while we construct the exception. | |
2958 bool throw_illegal_thread_state = false; | |
2959 | |
2960 // We must release the Threads_lock before we can post a jvmti event | |
2961 // in Thread::start. | |
2962 { | |
2963 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2964 // we operate. | |
2965 MutexLocker mu(Threads_lock); | |
2966 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2967 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2968 // re-starting an already started thread, so we should usually find |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2969 // that the JavaThread is null. However for a JNI attached thread |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2970 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2971 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2972 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2973 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2974 throw_illegal_thread_state = true; |
0 | 2975 } else { |
2162
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|
2976 // We could also check the stillborn flag to see if this thread was already stopped, but |
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|
2977 // for historical reasons we let the thread detect that itself when it starts running |
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|
2978 |
0 | 2979 jlong size = |
2980 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2981 // Allocate the C++ Thread structure and create the native thread. The | |
2982 // stack size retrieved from java is signed, but the constructor takes | |
2983 // size_t (an unsigned type), so avoid passing negative values which would | |
2984 // result in really large stacks. | |
2985 size_t sz = size > 0 ? (size_t) size : 0; | |
2986 native_thread = new JavaThread(&thread_entry, sz); | |
2987 | |
2988 // At this point it may be possible that no osthread was created for the | |
2989 // JavaThread due to lack of memory. Check for this situation and throw | |
2990 // an exception if necessary. Eventually we may want to change this so | |
2991 // that we only grab the lock if the thread was created successfully - | |
2992 // then we can also do this check and throw the exception in the | |
2993 // JavaThread constructor. | |
2994 if (native_thread->osthread() != NULL) { | |
2995 // Note: the current thread is not being used within "prepare". | |
2996 native_thread->prepare(jthread); | |
2997 } | |
2998 } | |
2999 } | |
3000 | |
3001 if (throw_illegal_thread_state) { | |
3002 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
3003 } | |
3004 | |
3005 assert(native_thread != NULL, "Starting null thread?"); | |
3006 | |
3007 if (native_thread->osthread() == NULL) { | |
3008 // No one should hold a reference to the 'native_thread'. | |
3009 delete native_thread; | |
3010 if (JvmtiExport::should_post_resource_exhausted()) { | |
3011 JvmtiExport::post_resource_exhausted( | |
3012 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
3013 "unable to create new native thread"); | |
3014 } | |
3015 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
3016 "unable to create new native thread"); | |
3017 } | |
3018 | |
3019 Thread::start(native_thread); | |
3020 | |
3021 JVM_END | |
3022 | |
3023 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
3024 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
3025 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
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diff
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|
3026 // same thread as the sender, no safepoint is needed. |
0 | 3027 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
3028 JVMWrapper("JVM_StopThread"); | |
3029 | |
3030 oop java_throwable = JNIHandles::resolve(throwable); | |
3031 if (java_throwable == NULL) { | |
3032 THROW(vmSymbols::java_lang_NullPointerException()); | |
3033 } | |
3034 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3035 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
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|
3036 Events::log_exception(JavaThread::current(), |
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|
3037 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
17937
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changeset
|
3038 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
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|
3039 // First check if thread is alive |
0 | 3040 if (receiver != NULL) { |
3041 // Check if exception is getting thrown at self (use oop equality, since the | |
3042 // target object might exit) | |
3043 if (java_thread == thread->threadObj()) { | |
3044 THROW_OOP(java_throwable); | |
3045 } else { | |
3046 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
3047 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
3048 } | |
3049 } | |
2162
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|
3050 else { |
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changeset
|
3051 // Either: |
ccfcb502af3f
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diff
changeset
|
3052 // - target thread has not been started before being stopped, or |
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diff
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|
3053 // - target thread already terminated |
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diff
changeset
|
3054 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
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diff
changeset
|
3055 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
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diff
changeset
|
3056 // stillborn flag for the first case, and if the thread has already |
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diff
changeset
|
3057 // exited setting this flag has no affect |
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diff
changeset
|
3058 java_lang_Thread::set_stillborn(java_thread); |
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changeset
|
3059 } |
0 | 3060 JVM_END |
3061 | |
3062 | |
3063 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
3064 JVMWrapper("JVM_IsThreadAlive"); | |
3065 | |
3066 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
3067 return java_lang_Thread::is_alive(thread_oop); | |
3068 JVM_END | |
3069 | |
3070 | |
3071 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
3072 JVMWrapper("JVM_SuspendThread"); | |
3073 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3074 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
3075 | |
3076 if (receiver != NULL) { | |
3077 // thread has run and has not exited (still on threads list) | |
3078 | |
3079 { | |
3080 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
3081 if (receiver->is_external_suspend()) { | |
3082 // Don't allow nested external suspend requests. We can't return | |
3083 // an error from this interface so just ignore the problem. | |
3084 return; | |
3085 } | |
3086 if (receiver->is_exiting()) { // thread is in the process of exiting | |
3087 return; | |
3088 } | |
3089 receiver->set_external_suspend(); | |
3090 } | |
3091 | |
3092 // java_suspend() will catch threads in the process of exiting | |
3093 // and will ignore them. | |
3094 receiver->java_suspend(); | |
3095 | |
3096 // It would be nice to have the following assertion in all the | |
3097 // time, but it is possible for a racing resume request to have | |
3098 // resumed this thread right after we suspended it. Temporarily | |
3099 // enable this assertion if you are chasing a different kind of | |
3100 // bug. | |
3101 // | |
3102 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
3103 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
3104 } | |
3105 JVM_END | |
3106 | |
3107 | |
3108 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3109 JVMWrapper("JVM_ResumeThread"); | |
3110 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3111 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3112 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3113 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3114 // looks at it. | |
3115 MutexLocker ml(Threads_lock); | |
3116 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3117 if (thr != NULL) { | |
3118 // the thread has run and is not in the process of exiting | |
3119 thr->java_resume(); | |
3120 } | |
3121 JVM_END | |
3122 | |
3123 | |
3124 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3125 JVMWrapper("JVM_SetThreadPriority"); | |
3126 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3127 MutexLocker ml(Threads_lock); | |
3128 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3129 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3130 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3131 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3132 Thread::set_priority(thr, (ThreadPriority)prio); | |
3133 } | |
3134 JVM_END | |
3135 | |
3136 | |
3137 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3138 JVMWrapper("JVM_Yield"); | |
3139 if (os::dont_yield()) return; | |
4006 | 3140 #ifndef USDT2 |
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diff
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|
3141 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3142 #else /* USDT2 */ |
3143 HOTSPOT_THREAD_YIELD(); | |
3144 #endif /* USDT2 */ | |
0 | 3145 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3146 // Critical for similar threading behaviour | |
3147 if (ConvertYieldToSleep) { | |
3148 os::sleep(thread, MinSleepInterval, false); | |
3149 } else { | |
3150 os::yield(); | |
3151 } | |
3152 JVM_END | |
3153 | |
3154 | |
3155 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3156 JVMWrapper("JVM_Sleep"); | |
3157 | |
3158 if (millis < 0) { | |
3159 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3160 } | |
3161 | |
3162 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3163 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3164 } | |
3165 | |
3166 // Save current thread state and restore it at the end of this block. | |
3167 // And set new thread state to SLEEPING. | |
3168 JavaThreadSleepState jtss(thread); | |
3169 | |
4006 | 3170 #ifndef USDT2 |
1324
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1144
diff
changeset
|
3171 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3172 #else /* USDT2 */ |
3173 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3174 millis); | |
3175 #endif /* USDT2 */ | |
1324
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1144
diff
changeset
|
3176 |
10405 | 3177 EventThreadSleep event; |
3178 | |
0 | 3179 if (millis == 0) { |
3180 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3181 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3182 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3183 // for SOLARIS | |
3184 if (ConvertSleepToYield) { | |
3185 os::yield(); | |
3186 } else { | |
3187 ThreadState old_state = thread->osthread()->get_state(); | |
3188 thread->osthread()->set_state(SLEEPING); | |
3189 os::sleep(thread, MinSleepInterval, false); | |
3190 thread->osthread()->set_state(old_state); | |
3191 } | |
3192 } else { | |
3193 ThreadState old_state = thread->osthread()->get_state(); | |
3194 thread->osthread()->set_state(SLEEPING); | |
3195 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3196 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3197 // us while we were sleeping. We do not overwrite those. | |
3198 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3199 if (event.should_commit()) { |
3200 event.set_time(millis); | |
3201 event.commit(); | |
3202 } | |
4006 | 3203 #ifndef USDT2 |
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parents:
1144
diff
changeset
|
3204 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3205 #else /* USDT2 */ |
3206 HOTSPOT_THREAD_SLEEP_END( | |
3207 1); | |
3208 #endif /* USDT2 */ | |
0 | 3209 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3210 // to properly restore the thread state. That's likely wrong. | |
3211 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3212 } | |
3213 } | |
3214 thread->osthread()->set_state(old_state); | |
3215 } | |
10405 | 3216 if (event.should_commit()) { |
3217 event.set_time(millis); | |
3218 event.commit(); | |
3219 } | |
4006 | 3220 #ifndef USDT2 |
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diff
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|
3221 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3222 #else /* USDT2 */ |
3223 HOTSPOT_THREAD_SLEEP_END( | |
3224 0); | |
3225 #endif /* USDT2 */ | |
0 | 3226 JVM_END |
3227 | |
3228 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3229 JVMWrapper("JVM_CurrentThread"); | |
3230 oop jthread = thread->threadObj(); | |
3231 assert (thread != NULL, "no current thread!"); | |
3232 return JNIHandles::make_local(env, jthread); | |
3233 JVM_END | |
3234 | |
3235 | |
3236 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3237 JVMWrapper("JVM_CountStackFrames"); | |
3238 | |
3239 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3240 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3241 bool throw_illegal_thread_state = false; | |
3242 int count = 0; | |
3243 | |
3244 { | |
3245 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3246 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3247 // acquire of the lock | |
3248 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3249 | |
3250 if (thr == NULL) { | |
3251 // do nothing | |
3252 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3253 // Check whether this java thread has been suspended already. If not, throws | |
3254 // IllegalThreadStateException. We defer to throw that exception until | |
3255 // Threads_lock is released since loading exception class has to leave VM. | |
3256 // The correct way to test a thread is actually suspended is | |
3257 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3258 // the Threads_lock. The above tests are sufficient for our purposes | |
3259 // provided the walkability of the stack is stable - which it isn't | |
3260 // 100% but close enough for most practical purposes. | |
3261 throw_illegal_thread_state = true; | |
3262 } else { | |
3263 // Count all java activation, i.e., number of vframes | |
3264 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3265 // Native frames are not counted | |
3266 if (!vfst.method()->is_native()) count++; | |
3267 } | |
3268 } | |
3269 } | |
3270 | |
3271 if (throw_illegal_thread_state) { | |
3272 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3273 "this thread is not suspended"); | |
3274 } | |
3275 return count; | |
3276 JVM_END | |
3277 | |
3278 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3279 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3280 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3281 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3282 // outside the critical section. Threads_lock is hot so we want to minimize | |
3283 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3284 // two steps. The 1st phase, performed under Threads_lock, would return | |
3285 // a closure that'd be invoked after Threads_lock was dropped. | |
3286 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3287 // admit spurious wakeups. | |
3288 | |
3289 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3290 JVMWrapper("JVM_Interrupt"); | |
3291 | |
3292 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3293 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3294 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3295 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3296 // acquire of the lock | |
3297 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3298 if (thr != NULL) { | |
3299 Thread::interrupt(thr); | |
3300 } | |
3301 JVM_END | |
3302 | |
3303 | |
3304 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3305 JVMWrapper("JVM_IsInterrupted"); | |
3306 | |
3307 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3308 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3309 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3310 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3311 // acquire of the lock | |
3312 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3313 if (thr == NULL) { | |
3314 return JNI_FALSE; | |
3315 } else { | |
3316 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3317 } | |
3318 JVM_END | |
3319 | |
3320 | |
3321 // Return true iff the current thread has locked the object passed in | |
3322 | |
3323 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3324 JVMWrapper("JVM_HoldsLock"); | |
3325 assert(THREAD->is_Java_thread(), "sanity check"); | |
3326 if (obj == NULL) { | |
3327 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3328 } | |
3329 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3330 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3331 JVM_END | |
3332 | |
3333 | |
3334 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3335 JVMWrapper("JVM_DumpAllStacks"); | |
3336 VM_PrintThreads op; | |
3337 VMThread::execute(&op); | |
3338 if (JvmtiExport::should_post_data_dump()) { | |
3339 JvmtiExport::post_data_dump(); | |
3340 } | |
3341 JVM_END | |
3342 | |
4006 | 3343 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3344 JVMWrapper("JVM_SetNativeThreadName"); | |
3345 ResourceMark rm(THREAD); | |
3346 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3347 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3348 // Thread naming only supported for the current thread, doesn't work for | |
3349 // target threads. | |
3350 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3351 // we don't set the name of an attached thread to avoid stepping | |
3352 // on other programs | |
3353 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3354 os::set_native_thread_name(thread_name); | |
3355 } | |
3356 JVM_END | |
0 | 3357 |
3358 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3359 | |
3360 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3361 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3362 if (jthread->privileged_stack_top() == NULL) return false; | |
3363 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3364 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3365 if (loader == NULL) return true; | |
3366 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3367 if (trusted) return true; | |
3368 } | |
3369 return false; | |
3370 } | |
3371 | |
3372 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3373 JVMWrapper("JVM_CurrentLoadedClass"); | |
3374 ResourceMark rm(THREAD); | |
3375 | |
3376 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3377 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3378 bool trusted = is_trusted_frame(thread, &vfst); | |
3379 if (trusted) return NULL; | |
3380 | |
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|
3381 Method* m = vfst.method(); |
0 | 3382 if (!m->is_native()) { |
6940
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6831
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|
3383 InstanceKlass* holder = m->method_holder(); |
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diff
changeset
|
3384 oop loader = holder->class_loader(); |
0 | 3385 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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diff
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|
3386 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3387 } |
3388 } | |
3389 } | |
3390 return NULL; | |
3391 JVM_END | |
3392 | |
3393 | |
3394 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3395 JVMWrapper("JVM_CurrentClassLoader"); | |
3396 ResourceMark rm(THREAD); | |
3397 | |
3398 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3399 | |
3400 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3401 bool trusted = is_trusted_frame(thread, &vfst); | |
3402 if (trusted) return NULL; | |
3403 | |
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3404 Method* m = vfst.method(); |
0 | 3405 if (!m->is_native()) { |
6940
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diff
changeset
|
3406 InstanceKlass* holder = m->method_holder(); |
0 | 3407 assert(holder->is_klass(), "just checking"); |
6940
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changeset
|
3408 oop loader = holder->class_loader(); |
0 | 3409 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3410 return JNIHandles::make_local(env, loader); | |
3411 } | |
3412 } | |
3413 } | |
3414 return NULL; | |
3415 JVM_END | |
3416 | |
3417 | |
3418 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3419 JVMWrapper("JVM_GetClassContext"); | |
3420 ResourceMark rm(THREAD); | |
3421 JvmtiVMObjectAllocEventCollector oam; | |
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diff
changeset
|
3422 vframeStream vfst(thread); |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3423 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3424 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3425 // This must only be called from SecurityManager.getClassContext |
16885e702c88
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diff
changeset
|
3426 Method* m = vfst.method(); |
16885e702c88
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diff
changeset
|
3427 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
16885e702c88
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changeset
|
3428 m->name() == vmSymbols::getClassContext_name() && |
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changeset
|
3429 m->signature() == vmSymbols::void_class_array_signature())) { |
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changeset
|
3430 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3431 } |
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changeset
|
3432 } |
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changeset
|
3433 |
16885e702c88
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diff
changeset
|
3434 // Collect method holders |
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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diff
changeset
|
3435 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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changeset
|
3436 for (; !vfst.at_end(); vfst.security_next()) { |
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changeset
|
3437 Method* m = vfst.method(); |
0 | 3438 // Native frames are not returned |
8866
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diff
changeset
|
3439 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
16885e702c88
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changeset
|
3440 Klass* holder = m->method_holder(); |
0 | 3441 assert(holder->is_klass(), "just checking"); |
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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diff
changeset
|
3442 klass_array->append(holder); |
0 | 3443 } |
3444 } | |
3445 | |
3446 // Create result array of type [Ljava/lang/Class; | |
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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diff
changeset
|
3447 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3448 // Fill in mirrors corresponding to method holders |
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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diff
changeset
|
3449 for (int i = 0; i < klass_array->length(); i++) { |
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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diff
changeset
|
3450 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3451 } |
3452 | |
3453 return (jobjectArray) JNIHandles::make_local(env, result); | |
3454 JVM_END | |
3455 | |
3456 | |
3457 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3458 JVMWrapper("JVM_ClassDepth"); | |
3459 ResourceMark rm(THREAD); | |
3460 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3461 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3462 | |
3463 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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diff
changeset
|
3464 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
3465 if (class_name_sym == NULL) { |
0 | 3466 return -1; |
3467 } | |
3468 | |
3469 int depth = 0; | |
3470 | |
3471 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3472 if (!vfst.method()->is_native()) { | |
6940
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coleenp
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diff
changeset
|
3473 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3474 assert(holder->is_klass(), "just checking"); |
6940
18fb7da42534
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coleenp
parents:
6831
diff
changeset
|
3475 if (holder->name() == class_name_sym) { |
0 | 3476 return depth; |
3477 } | |
3478 depth++; | |
3479 } | |
3480 } | |
3481 return -1; | |
3482 JVM_END | |
3483 | |
3484 | |
3485 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3486 JVMWrapper("JVM_ClassLoaderDepth"); | |
3487 ResourceMark rm(THREAD); | |
3488 int depth = 0; | |
3489 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3490 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3491 bool trusted = is_trusted_frame(thread, &vfst); | |
3492 if (trusted) return -1; | |
3493 | |
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changeset
|
3494 Method* m = vfst.method(); |
0 | 3495 if (!m->is_native()) { |
6940
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coleenp
parents:
6831
diff
changeset
|
3496 InstanceKlass* holder = m->method_holder(); |
0 | 3497 assert(holder->is_klass(), "just checking"); |
6940
18fb7da42534
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changeset
|
3498 oop loader = holder->class_loader(); |
0 | 3499 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3500 return depth; | |
3501 } | |
3502 depth++; | |
3503 } | |
3504 } | |
3505 return -1; | |
3506 JVM_END | |
3507 | |
3508 | |
3509 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3510 | |
3511 | |
3512 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3513 JVMWrapper("JVM_GetSystemPackage"); | |
3514 ResourceMark rm(THREAD); | |
3515 JvmtiVMObjectAllocEventCollector oam; | |
3516 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3517 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3518 return (jstring) JNIHandles::make_local(result); | |
3519 JVM_END | |
3520 | |
3521 | |
3522 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3523 JVMWrapper("JVM_GetSystemPackages"); | |
3524 JvmtiVMObjectAllocEventCollector oam; | |
3525 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3526 return (jobjectArray) JNIHandles::make_local(result); | |
3527 JVM_END | |
3528 | |
3529 | |
3530 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3531 | |
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|
3532 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3533 if (current_class == NULL) { |
3534 return true; | |
3535 } | |
3536 if ((current_class == field_class) || access.is_public()) { | |
3537 return true; | |
3538 } | |
3539 | |
3540 if (access.is_protected()) { | |
3541 // See if current_class is a subclass of field_class | |
6983 | 3542 if (current_class->is_subclass_of(field_class)) { |
0 | 3543 return true; |
3544 } | |
3545 } | |
3546 | |
6725
da91efe96a93
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changeset
|
3547 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3548 } |
3549 | |
3550 | |
3551 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3552 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3553 JVMWrapper("JVM_AllocateNewObject"); | |
3554 JvmtiVMObjectAllocEventCollector oam; | |
3555 // Receiver is not used | |
3556 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3557 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3558 | |
3559 // Cannot instantiate primitive types | |
3560 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3561 ResourceMark rm(THREAD); | |
3562 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3563 } | |
3564 | |
3565 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3566 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3567 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3568 ResourceMark rm(THREAD); |
3569 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3570 } | |
3571 | |
6725
da91efe96a93
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coleenp
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diff
changeset
|
3572 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
da91efe96a93
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diff
changeset
|
3573 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3574 |
3575 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3576 | |
3577 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3578 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3579 | |
3580 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3581 curr_klass->initialize(CHECK_NULL); | |
3582 | |
3583 methodHandle m (THREAD, | |
3584 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3585 vmSymbols::void_method_signature())); | |
3586 if (m.is_null()) { | |
3587 ResourceMark rm(THREAD); | |
3588 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3589 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3590 vmSymbols::object_initializer_name(), |
3591 vmSymbols::void_method_signature())); | |
3592 } | |
3593 | |
3594 if (curr_klass == init_klass && !m->is_public()) { | |
3595 // Calling the constructor for class 'curr_klass'. | |
3596 // Only allow calls to a public no-arg constructor. | |
3597 // This path corresponds to creating an Externalizable object. | |
3598 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3599 } | |
3600 | |
3601 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3602 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3603 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3604 } | |
3605 | |
3606 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3607 // Call constructor m. This might call a constructor higher up in the hierachy | |
3608 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3609 | |
3610 return JNIHandles::make_local(obj()); | |
3611 JVM_END | |
3612 | |
3613 | |
3614 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3615 JVMWrapper("JVM_AllocateNewArray"); | |
3616 JvmtiVMObjectAllocEventCollector oam; | |
3617 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3618 | |
3619 if (java_lang_Class::is_primitive(mirror)) { | |
3620 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3621 } | |
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coleenp
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diff
changeset
|
3622 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3623 oop result; |
3624 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3625 if (k->oop_is_typeArray()) { |
0 | 3626 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3627 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3628 } else if (k->oop_is_objArray()) { |
0 | 3629 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3630 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3631 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3632 result = oak->allocate(length, CHECK_NULL); | |
3633 } else { | |
3634 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3635 } | |
3636 return JNIHandles::make_local(env, result); | |
3637 JVM_END | |
3638 | |
3639 | |
3640 // Return the first non-null class loader up the execution stack, or null | |
3641 // if only code from the null class loader is on the stack. | |
3642 | |
3643 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3644 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3645 // UseNewReflection | |
3646 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
|
3647 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3648 if (loader != NULL) { |
3649 return JNIHandles::make_local(env, loader); | |
3650 } | |
3651 } | |
3652 return NULL; | |
3653 JVM_END | |
3654 | |
3655 | |
3656 // Load a class relative to the most recent class on the stack with a non-null | |
3657 // classloader. | |
3658 // This function has been deprecated and should not be considered part of the | |
3659 // specified JVM interface. | |
3660 | |
3661 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3662 jclass currClass, jstring currClassName)) | |
3663 JVMWrapper("JVM_LoadClass0"); | |
3664 // Receiver is not used | |
3665 ResourceMark rm(THREAD); | |
3666 | |
3667 // Class name argument is not guaranteed to be in internal format | |
3668 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3669 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3670 | |
3671 const char* str = java_lang_String::as_utf8_string(string()); | |
3672 | |
2177
3582bf76420e
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coleenp
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2162
diff
changeset
|
3673 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3674 // It's impossible to create this class; the name cannot fit |
3675 // into the constant pool. | |
3676 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3677 } | |
3678 | |
2177
3582bf76420e
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coleenp
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2162
diff
changeset
|
3679 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3680 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3681 // Find the most recent class on the stack with a non-null classloader | |
3682 oop loader = NULL; | |
3683 oop protection_domain = NULL; | |
3684 if (curr_klass.is_null()) { | |
3685 for (vframeStream vfst(thread); | |
3686 !vfst.at_end() && loader == NULL; | |
3687 vfst.next()) { | |
3688 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
|
3689 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3690 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3691 protection_domain = holder->protection_domain(); |
0 | 3692 } |
3693 } | |
3694 } else { | |
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diff
changeset
|
3695 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
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diff
changeset
|
3696 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
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changeset
|
3697 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3698 } |
3699 Handle h_loader(THREAD, loader); | |
3700 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3701 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
|
3702 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3703 if (TraceClassResolution && result != NULL) { |
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3704 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
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6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3705 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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diff
changeset
|
3706 return result; |
0 | 3707 JVM_END |
3708 | |
3709 | |
3710 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3711 | |
3712 | |
3713 // resolve array handle and check arguments | |
3714 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3715 if (arr == NULL) { | |
3716 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3717 } | |
3718 oop a = JNIHandles::resolve_non_null(arr); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3719 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3720 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3721 } | |
3722 return arrayOop(a); | |
3723 } | |
3724 | |
3725 | |
3726 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3727 JVMWrapper("JVM_GetArrayLength"); | |
3728 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3729 return a->length(); | |
3730 JVM_END | |
3731 | |
3732 | |
3733 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3734 JVMWrapper("JVM_Array_Get"); | |
3735 JvmtiVMObjectAllocEventCollector oam; | |
3736 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3737 jvalue value; | |
3738 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3739 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3740 return JNIHandles::make_local(env, box); | |
3741 JVM_END | |
3742 | |
3743 | |
3744 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3745 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3746 jvalue value; | |
3747 value.i = 0; // to initialize value before getting used in CHECK | |
3748 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3749 assert(a->is_typeArray(), "just checking"); | |
3750 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3751 BasicType wide_type = (BasicType) wCode; | |
3752 if (type != wide_type) { | |
3753 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3754 } | |
3755 return value; | |
3756 JVM_END | |
3757 | |
3758 | |
3759 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3760 JVMWrapper("JVM_SetArrayElement"); | |
3761 arrayOop a = check_array(env, arr, false, CHECK); | |
3762 oop box = JNIHandles::resolve(val); | |
3763 jvalue value; | |
3764 value.i = 0; // to initialize value before getting used in CHECK | |
3765 BasicType value_type; | |
3766 if (a->is_objArray()) { | |
3767 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3768 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3769 } else { | |
3770 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3771 } | |
3772 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3773 JVM_END | |
3774 | |
3775 | |
3776 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3777 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3778 arrayOop a = check_array(env, arr, true, CHECK); | |
3779 assert(a->is_typeArray(), "just checking"); | |
3780 BasicType value_type = (BasicType) vCode; | |
3781 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3782 JVM_END | |
3783 | |
3784 | |
3785 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3786 JVMWrapper("JVM_NewArray"); | |
3787 JvmtiVMObjectAllocEventCollector oam; | |
3788 oop element_mirror = JNIHandles::resolve(eltClass); | |
3789 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3790 return JNIHandles::make_local(env, result); | |
3791 JVM_END | |
3792 | |
3793 | |
3794 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3795 JVMWrapper("JVM_NewMultiArray"); | |
3796 JvmtiVMObjectAllocEventCollector oam; | |
3797 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3798 oop element_mirror = JNIHandles::resolve(eltClass); | |
3799 assert(dim_array->is_typeArray(), "just checking"); | |
3800 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3801 return JNIHandles::make_local(env, result); | |
3802 JVM_END | |
3803 | |
3804 | |
3805 // Networking library support //////////////////////////////////////////////////////////////////// | |
3806 | |
3807 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3808 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
3809 return 0; |
0 | 3810 JVM_END |
3811 | |
3812 | |
3813 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3814 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3815 return os::socket(domain, type, protocol); |
0 | 3816 JVM_END |
3817 | |
3818 | |
3819 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3820 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3821 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3822 return os::socket_close(fd); |
0 | 3823 JVM_END |
3824 | |
3825 | |
3826 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3827 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3828 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3829 return os::socket_shutdown(fd, howto); |
0 | 3830 JVM_END |
3831 | |
3832 | |
3833 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3834 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3835 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3836 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3837 JVM_END |
3838 | |
3839 | |
3840 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3841 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3842 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3843 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3844 JVM_END |
3845 | |
3846 | |
3847 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3848 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3849 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
3850 return os::timeout(fd, timeout); |
0 | 3851 JVM_END |
3852 | |
3853 | |
3854 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3855 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3856 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3857 return os::listen(fd, count); |
0 | 3858 JVM_END |
3859 | |
3860 | |
3861 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3862 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3863 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3864 return os::connect(fd, him, (socklen_t)len); |
0 | 3865 JVM_END |
3866 | |
3867 | |
3868 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3869 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3870 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3871 return os::bind(fd, him, (socklen_t)len); |
0 | 3872 JVM_END |
3873 | |
3874 | |
3875 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3876 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3877 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3878 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3879 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3880 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3881 return result; |
0 | 3882 JVM_END |
3883 | |
3884 | |
3885 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3886 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3887 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3888 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3889 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
|
3890 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3891 return result; |
0 | 3892 JVM_END |
3893 | |
3894 | |
3895 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3896 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3897 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3898 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3899 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
|
3900 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3901 return result; |
0 | 3902 JVM_END |
3903 | |
3904 | |
3905 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3906 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3907 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3908 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3909 JVM_END |
3910 | |
3911 | |
3912 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3913 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3914 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3915 return os::socket_available(fd, pbytes); |
0 | 3916 JVM_END |
3917 | |
3918 | |
3919 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3920 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3921 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3922 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3923 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
|
3924 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3925 return result; |
0 | 3926 JVM_END |
3927 | |
3928 | |
3929 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3930 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3931 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3932 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3933 JVM_END |
3934 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3935 |
0 | 3936 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3937 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3938 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3939 JVM_END |
0 | 3940 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3941 |
0 | 3942 // Library support /////////////////////////////////////////////////////////////////////////// |
3943 | |
3944 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3945 //%note jvm_ct | |
3946 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3947 char ebuf[1024]; | |
3948 void *load_result; | |
3949 { | |
3950 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3951 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3952 } |
3953 if (load_result == NULL) { | |
3954 char msg[1024]; | |
3955 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3956 // Since 'ebuf' may contain a string encoded using | |
3957 // platform encoding scheme, we need to pass | |
3958 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3959 // as the last argument. See bug 6367357. | |
3960 Handle h_exception = | |
3961 Exceptions::new_exception(thread, | |
3962 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3963 msg, Exceptions::unsafe_to_utf8); | |
3964 | |
3965 THROW_HANDLE_0(h_exception); | |
3966 } | |
3967 return load_result; | |
3968 JVM_END | |
3969 | |
3970 | |
3971 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3972 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3973 os::dll_unload(handle); |
0 | 3974 JVM_END |
3975 | |
3976 | |
3977 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3978 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3979 return os::dll_lookup(handle, name); |
0 | 3980 JVM_END |
3981 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3982 |
0 | 3983 // Floating point support //////////////////////////////////////////////////////////////////// |
3984 | |
3985 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3986 JVMWrapper("JVM_IsNaN"); | |
3987 return g_isnan(a); | |
3988 JVM_END | |
3989 | |
3990 | |
3991 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3992 | |
3993 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3994 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3995 return Threads::is_supported_jni_version_including_1_1(version); | |
3996 JVM_END | |
3997 | |
3998 | |
3999 // String support /////////////////////////////////////////////////////////////////////////// | |
4000 | |
4001 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
4002 JVMWrapper("JVM_InternString"); | |
4003 JvmtiVMObjectAllocEventCollector oam; | |
4004 if (str == NULL) return NULL; | |
4005 oop string = JNIHandles::resolve_non_null(str); | |
4006 oop result = StringTable::intern(string, CHECK_NULL); | |
4007 return (jstring) JNIHandles::make_local(env, result); | |
4008 JVM_END | |
4009 | |
4010 | |
4011 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
4012 | |
4013 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
4014 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
4015 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
4016 // that only works with java threads. | |
4017 | |
4018 | |
4019 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
4020 VM_Exit::block_if_vm_exited(); | |
4021 JVMWrapper("JVM_RawMonitorCreate"); | |
4022 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
4023 } | |
4024 | |
4025 | |
4026 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
4027 VM_Exit::block_if_vm_exited(); | |
4028 JVMWrapper("JVM_RawMonitorDestroy"); | |
4029 delete ((Mutex*) mon); | |
4030 } | |
4031 | |
4032 | |
4033 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
4034 VM_Exit::block_if_vm_exited(); | |
4035 JVMWrapper("JVM_RawMonitorEnter"); | |
4036 ((Mutex*) mon)->jvm_raw_lock(); | |
4037 return 0; | |
4038 } | |
4039 | |
4040 | |
4041 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
4042 VM_Exit::block_if_vm_exited(); | |
4043 JVMWrapper("JVM_RawMonitorExit"); | |
4044 ((Mutex*) mon)->jvm_raw_unlock(); | |
4045 } | |
4046 | |
4047 | |
4048 // Support for Serialization | |
4049 | |
4050 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
4051 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
4052 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
4053 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
4054 | |
4055 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
4056 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
4057 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
4058 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
4059 | |
4060 | |
4061 void initialize_converter_functions() { | |
4062 if (JDK_Version::is_gte_jdk14x_version()) { | |
4063 // These functions only exist for compatibility with 1.3.1 and earlier | |
4064 return; | |
4065 } | |
4066 | |
4067 // called from universe_post_init() | |
4068 assert( | |
4069 int_bits_to_float_fn == NULL && | |
4070 long_bits_to_double_fn == NULL && | |
4071 float_to_int_bits_fn == NULL && | |
4072 double_to_long_bits_fn == NULL , | |
4073 "initialization done twice" | |
4074 ); | |
4075 // initialize | |
4076 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
4077 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
4078 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
4079 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
4080 // verify | |
4081 assert( | |
4082 int_bits_to_float_fn != NULL && | |
4083 long_bits_to_double_fn != NULL && | |
4084 float_to_int_bits_fn != NULL && | |
4085 double_to_long_bits_fn != NULL , | |
4086 "initialization failed" | |
4087 ); | |
4088 } | |
4089 | |
4090 | |
4091 | |
4092 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4093 | |
18051 | 4094 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
4095 Handle loader, Handle protection_domain, | |
4096 jboolean throwError, TRAPS) { | |
0 | 4097 // Security Note: |
4098 // The Java level wrapper will perform the necessary security check allowing | |
18051 | 4099 // us to pass the NULL as the initiating class loader. The VM is responsible for |
4100 // the checkPackageAccess relative to the initiating class loader via the | |
4101 // protection_domain. The protection_domain is passed as NULL by the java code | |
4102 // if there is no security manager in 3-arg Class.forName(). | |
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4103 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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4104 |
0 | 4105 KlassHandle klass_handle(THREAD, klass); |
4106 // Check if we should initialize the class | |
4107 if (init && klass_handle->oop_is_instance()) { | |
4108 klass_handle->initialize(CHECK_NULL); | |
4109 } | |
4110 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4111 } | |
4112 | |
4113 | |
4114 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4115 | |
4116 #ifndef PRODUCT | |
4117 | |
4118 extern "C" { | |
4119 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4120 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4121 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4122 } | |
4123 | |
4124 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4125 JVMWrapper("JVM_AccessBoolVMFlag"); | |
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4126 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4127 JVM_END |
4128 | |
4129 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4130 JVMWrapper("JVM_AccessVMIntFlag"); | |
4131 intx v; | |
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4132 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4133 *value = (jint)v; |
4134 return result; | |
4135 JVM_END | |
4136 | |
4137 | |
4138 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4139 JVMWrapper("JVM_VMBreakPoint"); | |
4140 oop the_obj = JNIHandles::resolve(obj); | |
4141 BREAKPOINT; | |
4142 JVM_END | |
4143 | |
4144 | |
4145 #endif | |
4146 | |
4147 | |
4148 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4149 | |
4150 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4151 JVMWrapper("JVM_InvokeMethod"); | |
4152 Handle method_handle; | |
4153 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4154 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4155 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4156 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4157 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4158 jobject res = JNIHandles::make_local(env, result); | |
4159 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4160 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4161 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4162 if (java_lang_Class::is_primitive(ret_type)) { | |
4163 // Only for primitive type vm allocates memory for java object. | |
4164 // See box() method. | |
4165 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4166 } | |
4167 } | |
4168 return res; | |
4169 } else { | |
4170 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4171 } | |
4172 JVM_END | |
4173 | |
4174 | |
4175 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4176 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4177 oop constructor_mirror = JNIHandles::resolve(c); | |
4178 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4179 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4180 jobject res = JNIHandles::make_local(env, result); | |
4181 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4182 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4183 } | |
4184 return res; | |
4185 JVM_END | |
4186 | |
4187 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4188 | |
4189 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4190 JVMWrapper("JVM_SupportsCX8"); | |
4191 return VM_Version::supports_cx8(); | |
4192 JVM_END | |
4193 | |
4194 | |
4195 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4196 JVMWrapper("JVM_CX8Field"); | |
4197 jlong res; | |
4198 oop o = JNIHandles::resolve(obj); | |
4199 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4200 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4201 | |
4202 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4203 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4204 | |
4205 return res == oldVal; | |
4206 JVM_END | |
4207 | |
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4208 // DTrace /////////////////////////////////////////////////////////////////// |
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4209 |
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4210 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4211 JVMWrapper("JVM_DTraceGetVersion"); |
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4212 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4213 JVM_END |
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4214 |
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4215 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4216 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4217 JVM_DTraceProvider* providers)) |
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4218 JVMWrapper("JVM_DTraceActivate"); |
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4219 return DTraceJSDT::activate( |
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4220 version, module_name, providers_count, providers, CHECK_0); |
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4221 JVM_END |
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4222 |
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4223 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4224 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4225 return DTraceJSDT::is_probe_enabled(method); |
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4226 JVM_END |
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4227 |
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4228 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4229 JVMWrapper("JVM_DTraceDispose"); |
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4230 DTraceJSDT::dispose(handle); |
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4231 JVM_END |
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4232 |
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4233 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4234 JVMWrapper("JVM_DTraceIsSupported"); |
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4235 return DTraceJSDT::is_supported(); |
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4236 JVM_END |
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4237 |
0 | 4238 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4239 // jvmti agent threads, and JNI attaching threads are skipped) | |
4240 // See CR 6404306 regarding JNI attaching threads | |
4241 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4242 ResourceMark rm(THREAD); | |
4243 ThreadsListEnumerator tle(THREAD, false, false); | |
4244 JvmtiVMObjectAllocEventCollector oam; | |
4245 | |
4246 int num_threads = tle.num_threads(); | |
1142 | 4247 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4248 objArrayHandle threads_ah(THREAD, r); |
4249 | |
4250 for (int i = 0; i < num_threads; i++) { | |
4251 Handle h = tle.get_threadObj(i); | |
4252 threads_ah->obj_at_put(i, h()); | |
4253 } | |
4254 | |
4255 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4256 JVM_END | |
4257 | |
4258 | |
4259 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4260 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4261 // the corresponding entry in the given threads array | |
4262 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4263 JVMWrapper("JVM_DumpThreads"); | |
4264 JvmtiVMObjectAllocEventCollector oam; | |
4265 | |
4266 // Check if threads is null | |
4267 if (threads == NULL) { | |
4268 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4269 } | |
4270 | |
4271 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4272 objArrayHandle ah(THREAD, a); | |
4273 int num_threads = ah->length(); | |
4274 // check if threads is non-empty array | |
4275 if (num_threads == 0) { | |
4276 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4277 } | |
4278 | |
4279 // check if threads is not an array of objects of Thread class | |
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4280 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4281 if (k != SystemDictionary::Thread_klass()) { |
0 | 4282 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4283 } | |
4284 | |
4285 ResourceMark rm(THREAD); | |
4286 | |
4287 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4288 for (int i = 0; i < num_threads; i++) { | |
4289 oop thread_obj = ah->obj_at(i); | |
4290 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4291 thread_handle_array->append(h); | |
4292 } | |
4293 | |
4294 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4295 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4296 | |
4297 JVM_END | |
4298 | |
4299 // JVM monitoring and management support | |
4300 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4301 return Management::get_jmm_interface(version); | |
4302 JVM_END | |
4303 | |
4304 // com.sun.tools.attach.VirtualMachine agent properties support | |
4305 // | |
4306 // Initialize the agent properties with the properties maintained in the VM | |
4307 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4308 JVMWrapper("JVM_InitAgentProperties"); | |
4309 ResourceMark rm; | |
4310 | |
4311 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4312 | |
4313 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4314 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4315 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4316 return properties; | |
4317 JVM_END | |
4318 | |
4319 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4320 { | |
4321 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4322 JvmtiVMObjectAllocEventCollector oam; | |
4323 | |
4324 if (ofClass == NULL) { | |
4325 return NULL; | |
4326 } | |
4327 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4328 // Special handling for primitive objects | |
4329 if (java_lang_Class::is_primitive(mirror())) { | |
4330 return NULL; | |
4331 } | |
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4332 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4333 if (!k->oop_is_instance()) { |
0 | 4334 return NULL; |
4335 } | |
4336 instanceKlassHandle ik_h(THREAD, k); | |
4337 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4338 if (encl_method_class_idx == 0) { | |
4339 return NULL; | |
4340 } | |
1142 | 4341 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4342 objArrayHandle dest(THREAD, dest_o); |
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4343 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4344 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4345 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4346 if (encl_method_method_idx != 0) { | |
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4347 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4348 extract_low_short_from_int( |
4349 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4350 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4351 dest->obj_at_put(1, str()); | |
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4352 sym = ik_h->constants()->symbol_at( |
0 | 4353 extract_high_short_from_int( |
4354 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4355 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4356 dest->obj_at_put(2, str()); | |
4357 } | |
4358 return (jobjectArray) JNIHandles::make_local(dest()); | |
4359 } | |
4360 JVM_END | |
4361 | |
4362 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4363 jint javaThreadState)) | |
4364 { | |
4365 // If new thread states are added in future JDK and VM versions, | |
4366 // this should check if the JDK version is compatible with thread | |
4367 // states supported by the VM. Return NULL if not compatible. | |
4368 // | |
4369 // This function must map the VM java_lang_Thread::ThreadStatus | |
4370 // to the Java thread state that the JDK supports. | |
4371 // | |
4372 | |
4373 typeArrayHandle values_h; | |
4374 switch (javaThreadState) { | |
4375 case JAVA_THREAD_STATE_NEW : { | |
4376 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4377 values_h = typeArrayHandle(THREAD, r); | |
4378 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4379 break; | |
4380 } | |
4381 case JAVA_THREAD_STATE_RUNNABLE : { | |
4382 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4383 values_h = typeArrayHandle(THREAD, r); | |
4384 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4385 break; | |
4386 } | |
4387 case JAVA_THREAD_STATE_BLOCKED : { | |
4388 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4389 values_h = typeArrayHandle(THREAD, r); | |
4390 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4391 break; | |
4392 } | |
4393 case JAVA_THREAD_STATE_WAITING : { | |
4394 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4395 values_h = typeArrayHandle(THREAD, r); | |
4396 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4397 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4398 break; | |
4399 } | |
4400 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4401 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4402 values_h = typeArrayHandle(THREAD, r); | |
4403 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4404 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4405 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4406 break; | |
4407 } | |
4408 case JAVA_THREAD_STATE_TERMINATED : { | |
4409 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4410 values_h = typeArrayHandle(THREAD, r); | |
4411 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4412 break; | |
4413 } | |
4414 default: | |
4415 // Unknown state - probably incompatible JDK version | |
4416 return NULL; | |
4417 } | |
4418 | |
4419 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4420 } | |
4421 JVM_END | |
4422 | |
4423 | |
4424 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4425 jint javaThreadState, | |
4426 jintArray values)) | |
4427 { | |
4428 // If new thread states are added in future JDK and VM versions, | |
4429 // this should check if the JDK version is compatible with thread | |
4430 // states supported by the VM. Return NULL if not compatible. | |
4431 // | |
4432 // This function must map the VM java_lang_Thread::ThreadStatus | |
4433 // to the Java thread state that the JDK supports. | |
4434 // | |
4435 | |
4436 ResourceMark rm; | |
4437 | |
4438 // Check if threads is null | |
4439 if (values == NULL) { | |
4440 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4441 } | |
4442 | |
4443 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4444 typeArrayHandle values_h(THREAD, v); | |
4445 | |
4446 objArrayHandle names_h; | |
4447 switch (javaThreadState) { | |
4448 case JAVA_THREAD_STATE_NEW : { | |
4449 assert(values_h->length() == 1 && | |
4450 values_h->int_at(0) == java_lang_Thread::NEW, | |
4451 "Invalid threadStatus value"); | |
4452 | |
1142 | 4453 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4454 1, /* only 1 substate */ |
4455 CHECK_NULL); | |
4456 names_h = objArrayHandle(THREAD, r); | |
4457 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4458 names_h->obj_at_put(0, name()); | |
4459 break; | |
4460 } | |
4461 case JAVA_THREAD_STATE_RUNNABLE : { | |
4462 assert(values_h->length() == 1 && | |
4463 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4464 "Invalid threadStatus value"); | |
4465 | |
1142 | 4466 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4467 1, /* only 1 substate */ |
4468 CHECK_NULL); | |
4469 names_h = objArrayHandle(THREAD, r); | |
4470 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4471 names_h->obj_at_put(0, name()); | |
4472 break; | |
4473 } | |
4474 case JAVA_THREAD_STATE_BLOCKED : { | |
4475 assert(values_h->length() == 1 && | |
4476 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4477 "Invalid threadStatus value"); | |
4478 | |
1142 | 4479 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4480 1, /* only 1 substate */ |
4481 CHECK_NULL); | |
4482 names_h = objArrayHandle(THREAD, r); | |
4483 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4484 names_h->obj_at_put(0, name()); | |
4485 break; | |
4486 } | |
4487 case JAVA_THREAD_STATE_WAITING : { | |
4488 assert(values_h->length() == 2 && | |
4489 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4490 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4491 "Invalid threadStatus value"); | |
1142 | 4492 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4493 2, /* number of substates */ |
4494 CHECK_NULL); | |
4495 names_h = objArrayHandle(THREAD, r); | |
4496 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4497 CHECK_NULL); | |
4498 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4499 CHECK_NULL); | |
4500 names_h->obj_at_put(0, name0()); | |
4501 names_h->obj_at_put(1, name1()); | |
4502 break; | |
4503 } | |
4504 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4505 assert(values_h->length() == 3 && | |
4506 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4507 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4508 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4509 "Invalid threadStatus value"); | |
1142 | 4510 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4511 3, /* number of substates */ |
4512 CHECK_NULL); | |
4513 names_h = objArrayHandle(THREAD, r); | |
4514 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4515 CHECK_NULL); | |
4516 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4517 CHECK_NULL); | |
4518 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4519 CHECK_NULL); | |
4520 names_h->obj_at_put(0, name0()); | |
4521 names_h->obj_at_put(1, name1()); | |
4522 names_h->obj_at_put(2, name2()); | |
4523 break; | |
4524 } | |
4525 case JAVA_THREAD_STATE_TERMINATED : { | |
4526 assert(values_h->length() == 1 && | |
4527 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4528 "Invalid threadStatus value"); | |
1142 | 4529 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4530 1, /* only 1 substate */ |
4531 CHECK_NULL); | |
4532 names_h = objArrayHandle(THREAD, r); | |
4533 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4534 names_h->obj_at_put(0, name()); | |
4535 break; | |
4536 } | |
4537 default: | |
4538 // Unknown state - probably incompatible JDK version | |
4539 return NULL; | |
4540 } | |
4541 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4542 } | |
4543 JVM_END | |
4544 | |
4545 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4546 { | |
20690
d4caf9c96afd
8035893: JVM_GetVersionInfo fails to zero structure
igerasim
parents:
20677
diff
changeset
|
4547 memset(info, 0, info_size); |
0 | 4548 |
4549 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4550 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4551 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4552 | |
4553 // when we add a new capability in the jvm_version_info struct, we should also | |
4554 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4555 // counter defined in runtimeService.cpp. | |
4556 info->is_attachable = AttachListener::is_attach_supported(); | |
4557 } | |
4558 JVM_END |