Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvm.cpp @ 24145:2f2299c68571 jvmci-0.27
change default of UseJVMCICompiler based on jvmci.Compiler property (which can now be set from <java.home>/jre/lib/jvmci/compiler-name)
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 15 Jun 2017 21:38:21 +0200 |
parents | d4858e92c9b1 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2016, 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"; | |
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386 #elif defined(INCLUDE_JVMCI) |
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387 const char* compiler_name = "HotSpot " CSIZE "JVMCI Compiler"; |
0 | 388 #else |
389 const char* compiler_name = ""; | |
390 #endif // compilers | |
391 #endif // TIERED | |
392 | |
393 if (*compiler_name != '\0' && | |
394 (Arguments::mode() != Arguments::_int)) { | |
395 PUTPROP(props, "sun.management.compiler", compiler_name); | |
396 } | |
397 } | |
398 | |
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399 const char* enableSharedLookupCache = "false"; |
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400 #if INCLUDE_CDS |
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401 if (ClassLoaderExt::is_lookup_cache_enabled()) { |
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402 enableSharedLookupCache = "true"; |
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403 } |
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404 #endif |
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405 PUTPROP(props, "sun.cds.enableSharedLookupCache", enableSharedLookupCache); |
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406 |
0 | 407 return properties; |
408 JVM_END | |
409 | |
410 | |
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411 /* |
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412 * Return the temporary directory that the VM uses for the attach |
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413 * and perf data files. |
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414 * |
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415 * It is important that this directory is well-known and the |
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416 * same for all VM instances. It cannot be affected by configuration |
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417 * variables such as java.io.tmpdir. |
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418 */ |
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419 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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420 JVMWrapper("JVM_GetTemporaryDirectory"); |
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421 HandleMark hm(THREAD); |
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422 const char* temp_dir = os::get_temp_directory(); |
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423 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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424 return (jstring) JNIHandles::make_local(env, h()); |
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425 JVM_END |
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426 |
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427 |
0 | 428 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
429 | |
430 extern volatile jint vm_created; | |
431 | |
432 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
433 if (vm_created != 0 && (code == 0)) { | |
434 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
435 Universe::run_finalizers_on_exit(); | |
436 } | |
437 before_exit(thread); | |
438 vm_exit(code); | |
439 JVM_END | |
440 | |
441 | |
442 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
443 before_exit(thread); | |
444 vm_exit(code); | |
445 JVM_END | |
446 | |
447 | |
448 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
449 register_on_exit_function(func); | |
450 JVM_END | |
451 | |
452 | |
453 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
454 JVMWrapper("JVM_GC"); | |
455 if (!DisableExplicitGC) { | |
456 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
457 } | |
458 JVM_END | |
459 | |
460 | |
461 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
462 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
463 return Universe::heap()->millis_since_last_gc(); | |
464 JVM_END | |
465 | |
466 | |
467 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
468 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
469 JVM_END | |
470 | |
471 | |
472 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
473 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
474 JVM_END | |
475 | |
476 static inline jlong convert_size_t_to_jlong(size_t val) { | |
477 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
478 NOT_LP64 (return (jlong)val;) | |
479 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
480 } | |
481 | |
482 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
483 JVMWrapper("JVM_TotalMemory"); | |
484 size_t n = Universe::heap()->capacity(); | |
485 return convert_size_t_to_jlong(n); | |
486 JVM_END | |
487 | |
488 | |
489 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
490 JVMWrapper("JVM_FreeMemory"); | |
491 CollectedHeap* ch = Universe::heap(); | |
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492 size_t n; |
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493 { |
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494 MutexLocker x(Heap_lock); |
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495 n = ch->capacity() - ch->used(); |
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496 } |
0 | 497 return convert_size_t_to_jlong(n); |
498 JVM_END | |
499 | |
500 | |
501 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
502 JVMWrapper("JVM_MaxMemory"); | |
503 size_t n = Universe::heap()->max_capacity(); | |
504 return convert_size_t_to_jlong(n); | |
505 JVM_END | |
506 | |
507 | |
508 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
509 JVMWrapper("JVM_ActiveProcessorCount"); | |
510 return os::active_processor_count(); | |
511 JVM_END | |
512 | |
513 | |
514 | |
515 // java.lang.Throwable ////////////////////////////////////////////////////// | |
516 | |
517 | |
518 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
519 JVMWrapper("JVM_FillInStackTrace"); | |
520 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
521 java_lang_Throwable::fill_in_stack_trace(exception); | |
522 JVM_END | |
523 | |
524 | |
525 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
526 JVMWrapper("JVM_GetStackTraceDepth"); | |
527 oop exception = JNIHandles::resolve(throwable); | |
528 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
529 JVM_END | |
530 | |
531 | |
532 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
533 JVMWrapper("JVM_GetStackTraceElement"); | |
534 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
535 oop exception = JNIHandles::resolve(throwable); | |
536 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
537 return JNIHandles::make_local(env, element); | |
538 JVM_END | |
539 | |
540 | |
541 // java.lang.Object /////////////////////////////////////////////// | |
542 | |
543 | |
544 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
545 JVMWrapper("JVM_IHashCode"); | |
546 // as implemented in the classic virtual machine; return 0 if object is NULL | |
547 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
548 JVM_END | |
549 | |
550 | |
551 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
552 JVMWrapper("JVM_MonitorWait"); | |
553 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
554 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
555 if (JvmtiExport::should_post_monitor_wait()) { | |
556 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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557 |
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558 // The current thread already owns the monitor and it has not yet |
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559 // been added to the wait queue so the current thread cannot be |
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560 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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561 // event handler cannot accidentally consume an unpark() meant for |
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562 // the ParkEvent associated with this ObjectMonitor. |
0 | 563 } |
564 ObjectSynchronizer::wait(obj, ms, CHECK); | |
565 JVM_END | |
566 | |
567 | |
568 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
569 JVMWrapper("JVM_MonitorNotify"); | |
570 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
571 ObjectSynchronizer::notify(obj, CHECK); | |
572 JVM_END | |
573 | |
574 | |
575 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
576 JVMWrapper("JVM_MonitorNotifyAll"); | |
577 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
578 ObjectSynchronizer::notifyall(obj, CHECK); | |
579 JVM_END | |
580 | |
581 | |
582 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
583 JVMWrapper("JVM_Clone"); | |
584 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
585 const KlassHandle klass (THREAD, obj->klass()); | |
586 JvmtiVMObjectAllocEventCollector oam; | |
587 | |
588 #ifdef ASSERT | |
589 // Just checking that the cloneable flag is set correct | |
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590 if (obj->is_array()) { |
0 | 591 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
592 } else { | |
593 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 594 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 595 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
596 } | |
597 #endif | |
598 | |
599 // Check if class of obj supports the Cloneable interface. | |
600 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
601 if (!klass->is_cloneable()) { | |
602 ResourceMark rm(THREAD); | |
603 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
604 } | |
605 | |
606 // Make shallow object copy | |
607 const int size = obj->size(); | |
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608 oop new_obj_oop = NULL; |
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609 if (obj->is_array()) { |
0 | 610 const int length = ((arrayOop)obj())->length(); |
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611 new_obj_oop = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); |
0 | 612 } else { |
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613 new_obj_oop = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); |
0 | 614 } |
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615 |
0 | 616 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread |
617 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
618 // be suspended in the middle of copying the pointer and end up with parts | |
619 // of two different pointers in the field. Subsequent dereferences will crash. | |
620 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
621 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
622 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
623 // The same is true of StubRoutines::object_copy and the various oop_copy | |
624 // variants, and of the code generated by the inline_native_clone intrinsic. | |
625 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
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626 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj_oop, |
0 | 627 (size_t)align_object_size(size) / HeapWordsPerLong); |
628 // Clear the header | |
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629 new_obj_oop->init_mark(); |
0 | 630 |
631 // Store check (mark entire object and let gc sort it out) | |
632 BarrierSet* bs = Universe::heap()->barrier_set(); | |
633 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
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634 bs->write_region(MemRegion((HeapWord*)new_obj_oop, size)); |
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635 |
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636 Handle new_obj(THREAD, new_obj_oop); |
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637 // Special handling for MemberNames. Since they contain Method* metadata, they |
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638 // must be registered so that RedefineClasses can fix metadata contained in them. |
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639 if (java_lang_invoke_MemberName::is_instance(new_obj()) && |
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640 java_lang_invoke_MemberName::is_method(new_obj())) { |
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641 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(new_obj()); |
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642 // MemberName may be unresolved, so doesn't need registration until resolved. |
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643 if (method != NULL) { |
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644 methodHandle m(THREAD, method); |
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645 // This can safepoint and redefine method, so need both new_obj and method |
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646 // in a handle, for two different reasons. new_obj can move, method can be |
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647 // deleted if nothing is using it on the stack. |
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648 m->method_holder()->add_member_name(new_obj()); |
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649 } |
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650 } |
0 | 651 |
652 // Caution: this involves a java upcall, so the clone should be | |
653 // "gc-robust" by this stage. | |
654 if (klass->has_finalizer()) { | |
655 assert(obj->is_instance(), "should be instanceOop"); | |
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656 new_obj_oop = InstanceKlass::register_finalizer(instanceOop(new_obj()), CHECK_NULL); |
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657 new_obj = Handle(THREAD, new_obj_oop); |
0 | 658 } |
659 | |
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660 return JNIHandles::make_local(env, new_obj()); |
0 | 661 JVM_END |
662 | |
663 // java.lang.Compiler //////////////////////////////////////////////////// | |
664 | |
665 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
666 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
667 // functions are all silently ignored unless JVM warnings are printed. | |
668 | |
669 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
670 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
671 JVM_END | |
672 | |
673 | |
674 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
675 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
676 return JNI_FALSE; | |
677 JVM_END | |
678 | |
679 | |
680 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
681 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
682 return JNI_FALSE; | |
683 JVM_END | |
684 | |
685 | |
686 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
687 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
688 return JNI_FALSE; | |
689 JVM_END | |
690 | |
691 | |
692 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
693 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
694 return NULL; | |
695 JVM_END | |
696 | |
697 | |
698 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
699 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
700 JVM_END | |
701 | |
702 | |
703 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
704 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
705 JVM_END | |
706 | |
707 | |
708 | |
709 // Error message support ////////////////////////////////////////////////////// | |
710 | |
711 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
712 JVMWrapper("JVM_GetLastErrorString"); | |
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713 return (jint)os::lasterror(buf, len); |
0 | 714 JVM_END |
715 | |
716 | |
717 // java.io.File /////////////////////////////////////////////////////////////// | |
718 | |
719 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
720 JVMWrapper2("JVM_NativePath (%s)", path); | |
1980
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721 return os::native_path(path); |
0 | 722 JVM_END |
723 | |
724 | |
725 // Misc. class handling /////////////////////////////////////////////////////////// | |
726 | |
727 | |
728 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
729 JVMWrapper("JVM_GetCallerClass"); | |
8866
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|
730 |
12824
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731 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
615d83933195
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732 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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733 // temporarily for existing code to use until a replacement API is defined. |
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|
734 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
8866
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735 Klass* k = thread->security_get_caller_class(depth); |
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736 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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737 } |
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|
738 |
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739 // Getting the class of the caller frame. |
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740 // |
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741 // The call stack at this point looks something like this: |
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742 // |
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743 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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744 // [1] [ @CallerSensitive API.method ] |
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745 // [.] [ (skipped intermediate frames) ] |
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|
746 // [n] [ caller ] |
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|
747 vframeStream vfst(thread); |
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|
748 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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749 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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|
750 Method* m = vfst.method(); |
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|
751 assert(m != NULL, "sanity"); |
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|
752 switch (n) { |
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|
753 case 0: |
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754 // This must only be called from Reflection.getCallerClass |
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755 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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756 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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|
757 } |
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|
758 // fall-through |
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|
759 case 1: |
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|
760 // Frame 0 and 1 must be caller sensitive. |
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|
761 if (!m->caller_sensitive()) { |
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|
762 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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|
763 } |
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|
764 break; |
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|
765 default: |
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|
766 if (!m->is_ignored_by_security_stack_walk()) { |
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|
767 // We have reached the desired frame; return the holder class. |
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768 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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|
769 } |
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|
770 break; |
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|
771 } |
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|
772 } |
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773 return NULL; |
0 | 774 JVM_END |
775 | |
776 | |
777 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
778 JVMWrapper("JVM_FindPrimitiveClass"); | |
779 oop mirror = NULL; | |
780 BasicType t = name2type(utf); | |
781 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
782 mirror = Universe::java_mirror(t); | |
783 } | |
784 if (mirror == NULL) { | |
785 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
786 } else { | |
787 return (jclass) JNIHandles::make_local(env, mirror); | |
788 } | |
789 JVM_END | |
790 | |
791 | |
792 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
793 JVMWrapper("JVM_ResolveClass"); | |
794 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
795 JVM_END | |
796 | |
878
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6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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|
797 |
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20527
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|
798 JVM_ENTRY(jboolean, JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname)) |
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8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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799 JVMWrapper("JVM_KnownToNotExist"); |
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|
800 #if INCLUDE_CDS |
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|
801 return ClassLoaderExt::known_to_not_exist(env, loader, classname, CHECK_(false)); |
4cb90023bf2b
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20527
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|
802 #else |
4cb90023bf2b
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20527
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|
803 return false; |
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8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
diff
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|
804 #endif |
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8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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diff
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|
805 JVM_END |
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|
806 |
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|
807 |
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20527
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|
808 JVM_ENTRY(jobjectArray, JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader)) |
4cb90023bf2b
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|
809 JVMWrapper("JVM_GetResourceLookupCacheURLs"); |
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|
810 #if INCLUDE_CDS |
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|
811 return ClassLoaderExt::get_lookup_cache_urls(env, loader, CHECK_NULL); |
4cb90023bf2b
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|
812 #else |
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diff
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|
813 return NULL; |
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20527
diff
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|
814 #endif |
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|
815 JVM_END |
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|
816 |
4cb90023bf2b
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|
817 |
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|
818 JVM_ENTRY(jintArray, JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name)) |
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|
819 JVMWrapper("JVM_GetResourceLookupCache"); |
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820 #if INCLUDE_CDS |
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821 return ClassLoaderExt::get_lookup_cache(env, loader, resource_name, CHECK_NULL); |
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|
822 #else |
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|
823 return NULL; |
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|
824 #endif |
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|
825 JVM_END |
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|
826 |
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|
827 |
878
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828 // Returns a class loaded by the bootstrap class loader; or null |
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829 // if not found. ClassNotFoundException is not thrown. |
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|
830 // |
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|
831 // Rationale behind JVM_FindClassFromBootLoader |
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832 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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833 // b> because of (a) java.dll has a direct dependecy on the unexported |
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|
834 // private symbol "_JVM_FindClassFromClassLoader@20". |
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|
835 // c> the launcher cannot use the private symbol as it dynamically opens |
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836 // the entry point, so if something changes, the launcher will fail |
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|
837 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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diff
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|
838 // stable exported interface. |
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|
839 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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|
840 // signature to change from _JVM_FindClassFromClassLoader@20 to |
abe076e3636f
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diff
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|
841 // JVM_FindClassFromClassLoader and will not be backward compatible |
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diff
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|
842 // with older JDKs. |
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|
843 // Thus a public/stable exported entry point is the right solution, |
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|
844 // public here means public in linker semantics, and is exported only |
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diff
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|
845 // to the JDK, and is not intended to be a public API. |
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|
846 |
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|
847 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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|
848 const char* name)) |
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mchung
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changeset
|
849 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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850 |
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851 // Java libraries should ensure that name is never null... |
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852 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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853 // It's impossible to create this class; the name cannot fit |
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854 // into the constant pool. |
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855 return NULL; |
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856 } |
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857 |
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858 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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859 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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860 if (k == NULL) { |
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861 return NULL; |
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862 } |
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863 |
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864 if (TraceClassResolution) { |
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865 trace_class_resolution(k); |
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866 } |
6983 | 867 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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868 JVM_END |
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869 |
18051 | 870 // Not used; JVM_FindClassFromCaller replaces this. |
878
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871 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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872 jboolean init, jobject loader, |
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873 jboolean throwError)) |
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874 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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875 throwError ? "error" : "exception"); |
388 | 876 // Java libraries should ensure that name is never null... |
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877 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 878 // It's impossible to create this class; the name cannot fit |
879 // into the constant pool. | |
880 if (throwError) { | |
881 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
882 } else { | |
883 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
884 } | |
885 } | |
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886 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 887 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
888 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
889 Handle(), throwError, THREAD); | |
890 | |
891 if (TraceClassResolution && result != NULL) { | |
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892 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 893 } |
894 return result; | |
0 | 895 JVM_END |
896 | |
18051 | 897 // Find a class with this name in this loader, using the caller's protection domain. |
898 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
899 jboolean init, jobject loader, | |
900 jclass caller)) | |
901 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
902 // Java libraries should ensure that name is never null... | |
903 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
904 // It's impossible to create this class; the name cannot fit | |
905 // into the constant pool. | |
906 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
907 } | |
908 | |
909 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
910 | |
911 oop loader_oop = JNIHandles::resolve(loader); | |
912 oop from_class = JNIHandles::resolve(caller); | |
913 oop protection_domain = NULL; | |
914 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
915 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
916 // thus no checkPackageAccess equivalence in the VM class loader. | |
917 // The caller is also passed as NULL by the java code if there is no security | |
918 // manager to avoid the performance cost of getting the calling class. | |
919 if (from_class != NULL && loader_oop != NULL) { | |
920 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
921 } | |
922 | |
923 Handle h_loader(THREAD, loader_oop); | |
924 Handle h_prot(THREAD, protection_domain); | |
925 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
926 h_prot, false, THREAD); | |
927 | |
928 if (TraceClassResolution && result != NULL) { | |
929 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
930 } | |
931 return result; | |
932 JVM_END | |
0 | 933 |
934 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
935 jboolean init, jclass from)) | |
936 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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937 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 938 // It's impossible to create this class; the name cannot fit |
939 // into the constant pool. | |
940 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
941 } | |
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942 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 943 oop from_class_oop = JNIHandles::resolve(from); |
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944 Klass* from_class = (from_class_oop == NULL) |
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945 ? (Klass*)NULL |
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946 : java_lang_Class::as_Klass(from_class_oop); |
0 | 947 oop class_loader = NULL; |
948 oop protection_domain = NULL; | |
949 if (from_class != NULL) { | |
6983 | 950 class_loader = from_class->class_loader(); |
951 protection_domain = from_class->protection_domain(); | |
0 | 952 } |
953 Handle h_loader(THREAD, class_loader); | |
954 Handle h_prot (THREAD, protection_domain); | |
955 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
956 h_prot, true, thread); | |
957 | |
958 if (TraceClassResolution && result != NULL) { | |
959 // this function is generally only used for class loading during verification. | |
960 ResourceMark rm; | |
961 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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962 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 963 const char * from_name = from_class->external_name(); |
0 | 964 |
965 oop mirror = JNIHandles::resolve_non_null(result); | |
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966 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 967 const char * to = to_class->external_name(); |
0 | 968 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
969 } | |
970 | |
971 return result; | |
972 JVM_END | |
973 | |
974 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
975 if (loader.is_null()) { | |
976 return; | |
977 } | |
978 | |
979 // check whether the current caller thread holds the lock or not. | |
980 // If not, increment the corresponding counter | |
981 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
982 ObjectSynchronizer::owner_self) { | |
983 counter->inc(); | |
984 } | |
985 } | |
986 | |
987 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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988 // and JVM_DefineClassWithSourceCond() |
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989 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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990 jobject loader, const jbyte *buf, |
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991 jsize len, jobject pd, const char *source, |
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992 jboolean verify, TRAPS) { |
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993 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 994 |
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995 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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996 JavaThread* jt = (JavaThread*) THREAD; |
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997 |
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998 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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999 ClassLoader::perf_define_appclass_selftime(), |
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1000 ClassLoader::perf_define_appclasses(), |
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1001 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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1002 jt->get_thread_stat()->perf_timers_addr(), |
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1003 PerfClassTraceTime::DEFINE_CLASS); |
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1004 |
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1005 if (UsePerfData) { |
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1006 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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1007 } |
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1008 |
0 | 1009 // Since exceptions can be thrown, class initialization can take place |
1010 // if name is NULL no check for class name in .class stream has to be made. | |
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1011 TempNewSymbol class_name = NULL; |
0 | 1012 if (name != NULL) { |
1013 const int str_len = (int)strlen(name); | |
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1014 if (str_len > Symbol::max_length()) { |
0 | 1015 // It's impossible to create this class; the name cannot fit |
1016 // into the constant pool. | |
1017 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
1018 } | |
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1019 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 1020 } |
1021 | |
1022 ResourceMark rm(THREAD); | |
1023 ClassFileStream st((u1*) buf, len, (char *)source); | |
1024 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
1025 if (UsePerfData) { | |
1026 is_lock_held_by_thread(class_loader, | |
1027 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
1028 THREAD); | |
1029 } | |
1030 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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1031 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 1032 protection_domain, &st, |
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1033 verify != 0, |
0 | 1034 CHECK_NULL); |
1035 | |
1036 if (TraceClassResolution && k != NULL) { | |
1037 trace_class_resolution(k); | |
1038 } | |
1039 | |
6983 | 1040 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1041 } |
1042 | |
1043 | |
1044 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
1045 JVMWrapper2("JVM_DefineClass %s", name); | |
1046 | |
973
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1047 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 1048 JVM_END |
1049 | |
1050 | |
1051 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
1052 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
1053 | |
973
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1054 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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1055 JVM_END |
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1056 |
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1057 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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1058 jobject loader, const jbyte *buf, |
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1059 jsize len, jobject pd, |
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1060 const char *source, jboolean verify)) |
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1061 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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1062 |
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1063 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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1064 JVM_END |
0 | 1065 |
1066 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
1067 JVMWrapper("JVM_FindLoadedClass"); | |
1068 ResourceMark rm(THREAD); | |
1069 | |
1070 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
1071 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
1072 | |
1073 const char* str = java_lang_String::as_utf8_string(string()); | |
1074 // Sanity check, don't expect null | |
1075 if (str == NULL) return NULL; | |
1076 | |
1077 const int str_len = (int)strlen(str); | |
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1078 if (str_len > Symbol::max_length()) { |
0 | 1079 // It's impossible to create this class; the name cannot fit |
1080 // into the constant pool. | |
1081 return NULL; | |
1082 } | |
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1083 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 1084 |
1085 // Security Note: | |
1086 // The Java level wrapper will perform the necessary security check allowing | |
1087 // us to pass the NULL as the initiating class loader. | |
1088 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
1089 if (UsePerfData) { | |
1090 is_lock_held_by_thread(h_loader, | |
1091 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
1092 THREAD); | |
1093 } | |
1094 | |
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1095 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 1096 h_loader, |
1097 Handle(), | |
1098 CHECK_NULL); | |
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1099 #if INCLUDE_CDS |
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1100 if (k == NULL) { |
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1101 // If the class is not already loaded, try to see if it's in the shared |
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1102 // archive for the current classloader (h_loader). |
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1103 instanceKlassHandle ik = SystemDictionaryShared::find_or_load_shared_class( |
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1104 klass_name, h_loader, CHECK_NULL); |
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1105 k = ik(); |
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1106 } |
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1107 #endif |
0 | 1108 return (k == NULL) ? NULL : |
6983 | 1109 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1110 JVM_END |
1111 | |
1112 | |
1113 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
1114 | |
1115 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
1116 assert (cls != NULL, "illegal class"); | |
1117 JVMWrapper("JVM_GetClassName"); | |
1118 JvmtiVMObjectAllocEventCollector oam; | |
1119 ResourceMark rm(THREAD); | |
1120 const char* name; | |
1121 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1122 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
1123 } else { | |
1124 // Consider caching interned string in Klass | |
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1125 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1126 assert(k->is_klass(), "just checking"); |
6983 | 1127 name = k->external_name(); |
0 | 1128 } |
1129 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1130 return (jstring) JNIHandles::make_local(env, result); | |
1131 JVM_END | |
1132 | |
1133 | |
1134 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1135 JVMWrapper("JVM_GetClassInterfaces"); | |
1136 JvmtiVMObjectAllocEventCollector oam; | |
1137 oop mirror = JNIHandles::resolve_non_null(cls); | |
1138 | |
1139 // Special handling for primitive objects | |
1140 if (java_lang_Class::is_primitive(mirror)) { | |
1141 // Primitive objects does not have any interfaces | |
1142 | 1142 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1143 return (jobjectArray) JNIHandles::make_local(env, r); |
1144 } | |
1145 | |
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1146 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1147 // Figure size of result array |
1148 int size; | |
1149 if (klass->oop_is_instance()) { | |
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1150 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1151 } else { |
1152 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1153 size = 2; | |
1154 } | |
1155 | |
1156 // Allocate result array | |
1142 | 1157 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1158 objArrayHandle result (THREAD, r); |
1159 // Fill in result | |
1160 if (klass->oop_is_instance()) { | |
1161 // Regular instance klass, fill in all local interfaces | |
1162 for (int index = 0; index < size; index++) { | |
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1163 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1164 result->obj_at_put(index, k->java_mirror()); |
0 | 1165 } |
1166 } else { | |
1167 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1168 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1169 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1170 } |
1171 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1172 JVM_END | |
1173 | |
1174 | |
1175 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1176 JVMWrapper("JVM_GetClassLoader"); | |
1177 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1178 return NULL; | |
1179 } | |
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1180 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1181 oop loader = k->class_loader(); |
0 | 1182 return JNIHandles::make_local(env, loader); |
1183 JVM_END | |
1184 | |
1185 | |
1186 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1187 JVMWrapper("JVM_IsInterface"); | |
1188 oop mirror = JNIHandles::resolve_non_null(cls); | |
1189 if (java_lang_Class::is_primitive(mirror)) { | |
1190 return JNI_FALSE; | |
1191 } | |
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1192 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1193 jboolean result = k->is_interface(); |
1194 assert(!result || k->oop_is_instance(), | |
0 | 1195 "all interfaces are instance types"); |
1196 // The compiler intrinsic for isInterface tests the | |
1197 // Klass::_access_flags bits in the same way. | |
1198 return result; | |
1199 JVM_END | |
1200 | |
1201 | |
1202 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1203 JVMWrapper("JVM_GetClassSigners"); | |
1204 JvmtiVMObjectAllocEventCollector oam; | |
1205 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1206 // There are no signers for primitive types | |
1207 return NULL; | |
1208 } | |
1209 | |
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1210 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1211 |
1212 // If there are no signers set in the class, or if the class | |
1213 // is an array, return NULL. | |
1214 if (signers == NULL) return NULL; | |
1215 | |
1216 // copy of the signers array | |
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1217 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1218 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1219 for (int index = 0; index < signers->length(); index++) { | |
1220 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1221 } | |
1222 | |
1223 // return the copy | |
1224 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1225 JVM_END | |
1226 | |
1227 | |
1228 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1229 JVMWrapper("JVM_SetClassSigners"); | |
1230 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1231 // This call is ignored for primitive types and arrays. | |
1232 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1233 // be called with an array. Only the bootstrap loader creates arrays. | |
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1234 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1235 if (k->oop_is_instance()) { |
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1236 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1237 } |
1238 } | |
1239 JVM_END | |
1240 | |
1241 | |
1242 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1243 JVMWrapper("JVM_GetProtectionDomain"); | |
1244 if (JNIHandles::resolve(cls) == NULL) { | |
1245 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1246 } | |
1247 | |
1248 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1249 // Primitive types does not have a protection domain. | |
1250 return NULL; | |
1251 } | |
1252 | |
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1253 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1254 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1255 JVM_END |
1256 | |
1257 | |
11010 | 1258 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1259 // If there is a security manager and protection domain, check the access | |
1260 // in the protection domain, otherwise it is authorized. | |
1261 if (java_lang_System::has_security_manager()) { | |
1262 | |
1263 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1264 // this context to revert to older behavior. | |
1265 // In this case the isAuthorized field in AccessControlContext is also not | |
1266 // present. | |
1267 if (Universe::protection_domain_implies_method() == NULL) { | |
1268 return true; | |
1269 } | |
1270 | |
1271 // Whitelist certain access control contexts | |
1272 if (java_security_AccessControlContext::is_authorized(context)) { | |
1273 return true; | |
1274 } | |
1275 | |
1276 oop prot = klass->protection_domain(); | |
1277 if (prot != NULL) { | |
1278 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1279 // in the new wrapper. | |
1280 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1281 Handle h_prot(THREAD, prot); | |
1282 JavaValue result(T_BOOLEAN); | |
1283 JavaCallArguments args(h_prot); | |
1284 JavaCalls::call(&result, m, &args, CHECK_false); | |
1285 return (result.get_jboolean() != 0); | |
1286 } | |
1287 } | |
1288 return true; | |
1289 } | |
1290 | |
1291 // Create an AccessControlContext with a protection domain with null codesource | |
1292 // and null permissions - which gives no permissions. | |
1293 oop create_dummy_access_control_context(TRAPS) { | |
1294 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
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1295 Handle obj = pd_klass->allocate_instance_handle(CHECK_NULL); |
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1296 // Call constructor ProtectionDomain(null, null); |
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1297 JavaValue result(T_VOID); |
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1298 JavaCalls::call_special(&result, obj, KlassHandle(THREAD, pd_klass), |
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1299 vmSymbols::object_initializer_name(), |
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1300 vmSymbols::codesource_permissioncollection_signature(), |
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1301 Handle(), Handle(), CHECK_NULL); |
11010 | 1302 |
1303 // new ProtectionDomain[] {pd}; | |
1304 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
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1305 context->obj_at_put(0, obj()); |
11010 | 1306 |
1307 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1308 objArrayHandle h_context(THREAD, context); | |
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1309 oop acc = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); |
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1310 return acc; |
11010 | 1311 } |
0 | 1312 |
1313 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1314 JVMWrapper("JVM_DoPrivileged"); | |
1315 | |
1316 if (action == NULL) { | |
1317 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1318 } | |
1319 | |
11010 | 1320 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1321 vframeStream vfst(thread); | |
1322 vfst.security_get_caller_frame(1); | |
1323 | |
1324 if (vfst.at_end()) { | |
1325 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1326 } | |
1327 | |
1328 Method* method = vfst.method(); | |
1329 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1330 | |
1331 // Check that action object understands "Object run()" | |
1332 Handle h_context; | |
1333 if (context != NULL) { | |
1334 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1335 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1336 if (!authorized) { | |
1337 // Create an unprivileged access control object and call it's run function | |
1338 // instead. | |
1339 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1340 h_context = Handle(THREAD, noprivs); | |
1341 } | |
1342 } | |
0 | 1343 |
1344 // Check that action object understands "Object run()" | |
1345 Handle object (THREAD, JNIHandles::resolve(action)); | |
1346 | |
1347 // get run() method | |
6983 | 1348 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1349 vmSymbols::run_method_name(), |
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1350 vmSymbols::void_object_signature(), |
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1351 Klass::normal); |
0 | 1352 methodHandle m (THREAD, m_oop); |
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1353 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1354 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1355 } | |
1356 | |
11010 | 1357 // Stack allocated list of privileged stack elements |
1358 PrivilegedElement pi; | |
0 | 1359 if (!vfst.at_end()) { |
11010 | 1360 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1361 thread->set_privileged_stack_top(&pi); |
1362 } | |
1363 | |
1364 | |
1365 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1366 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1367 Handle pending_exception; | |
1368 JavaValue result(T_OBJECT); | |
1369 JavaCallArguments args(object); | |
1370 JavaCalls::call(&result, m, &args, THREAD); | |
1371 | |
1372 // done with action, remove ourselves from the list | |
1373 if (!vfst.at_end()) { | |
1374 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1375 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1376 } | |
1377 | |
1378 if (HAS_PENDING_EXCEPTION) { | |
1379 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1380 CLEAR_PENDING_EXCEPTION; | |
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1381 // JVMTI has already reported the pending exception |
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1382 // JVMTI internal flag reset is needed in order to report PrivilegedActionException |
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1383 if (THREAD->is_Java_thread()) { |
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1384 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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1385 } |
1142 | 1386 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1387 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1388 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1389 JavaCallArguments args(pending_exception); | |
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1390 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1391 vmSymbols::exception_void_signature(), |
0 | 1392 &args); |
1393 } | |
1394 } | |
1395 | |
1396 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1397 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1398 JVM_END | |
1399 | |
1400 | |
1401 // Returns the inherited_access_control_context field of the running thread. | |
1402 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1403 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1404 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1405 return JNIHandles::make_local(env, result); | |
1406 JVM_END | |
1407 | |
1408 class RegisterArrayForGC { | |
1409 private: | |
1410 JavaThread *_thread; | |
1411 public: | |
1412 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1413 _thread = thread; | |
1414 _thread->register_array_for_gc(array); | |
1415 } | |
1416 | |
1417 ~RegisterArrayForGC() { | |
1418 _thread->register_array_for_gc(NULL); | |
1419 } | |
1420 }; | |
1421 | |
1422 | |
1423 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1424 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1425 if (!UsePrivilegedStack) return NULL; | |
1426 | |
1427 ResourceMark rm(THREAD); | |
1428 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1429 JvmtiVMObjectAllocEventCollector oam; | |
1430 | |
1431 // count the protection domains on the execution stack. We collapse | |
1432 // duplicate consecutive protection domains into a single one, as | |
1433 // well as stopping when we hit a privileged frame. | |
1434 | |
1435 // Use vframeStream to iterate through Java frames | |
1436 vframeStream vfst(thread); | |
1437 | |
1438 oop previous_protection_domain = NULL; | |
1439 Handle privileged_context(thread, NULL); | |
1440 bool is_privileged = false; | |
1441 oop protection_domain = NULL; | |
1442 | |
1443 for(; !vfst.at_end(); vfst.next()) { | |
1444 // get method of frame | |
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1445 Method* method = vfst.method(); |
0 | 1446 intptr_t* frame_id = vfst.frame_id(); |
1447 | |
1448 // check the privileged frames to see if we have a match | |
1449 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1450 // this frame is privileged | |
1451 is_privileged = true; | |
1452 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1453 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1454 } else { | |
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1455 protection_domain = method->method_holder()->protection_domain(); |
0 | 1456 } |
1457 | |
1458 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1459 local_array->push(protection_domain); | |
1460 previous_protection_domain = protection_domain; | |
1461 } | |
1462 | |
1463 if (is_privileged) break; | |
1464 } | |
1465 | |
1466 | |
1467 // either all the domains on the stack were system domains, or | |
1468 // we had a privileged system domain | |
1469 if (local_array->is_empty()) { | |
1470 if (is_privileged && privileged_context.is_null()) return NULL; | |
1471 | |
1472 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1473 return JNIHandles::make_local(env, result); | |
1474 } | |
1475 | |
1476 // the resource area must be registered in case of a gc | |
1477 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1478 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1479 local_array->length(), CHECK_NULL); |
1480 objArrayHandle h_context(thread, context); | |
1481 for (int index = 0; index < local_array->length(); index++) { | |
1482 h_context->obj_at_put(index, local_array->at(index)); | |
1483 } | |
1484 | |
1485 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1486 | |
1487 return JNIHandles::make_local(env, result); | |
1488 JVM_END | |
1489 | |
1490 | |
1491 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1492 JVMWrapper("JVM_IsArrayClass"); | |
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1493 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1494 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1495 JVM_END |
1496 | |
1497 | |
1498 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1499 JVMWrapper("JVM_IsPrimitiveClass"); | |
1500 oop mirror = JNIHandles::resolve_non_null(cls); | |
1501 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1502 JVM_END | |
1503 | |
1504 | |
1505 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1506 JVMWrapper("JVM_GetComponentType"); | |
1507 oop mirror = JNIHandles::resolve_non_null(cls); | |
1508 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1509 return (jclass) JNIHandles::make_local(env, result); | |
1510 JVM_END | |
1511 | |
1512 | |
1513 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1514 JVMWrapper("JVM_GetClassModifiers"); | |
1515 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1516 // Primitive type | |
1517 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1518 } | |
1519 | |
6983 | 1520 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1521 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1522 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1523 return k->modifier_flags(); | |
1524 JVM_END | |
1525 | |
1526 | |
1527 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1528 | |
1529 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1530 JvmtiVMObjectAllocEventCollector oam; | |
1531 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1532 // of an InstanceKlass |
0 | 1533 |
1534 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1535 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1536 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1537 return (jobjectArray)JNIHandles::make_local(env, result); |
1538 } | |
1539 | |
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1540 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1541 InnerClassesIterator iter(k); |
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1542 |
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1543 if (iter.length() == 0) { |
0 | 1544 // Neither an inner nor outer class |
1142 | 1545 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1546 return (jobjectArray)JNIHandles::make_local(env, result); |
1547 } | |
1548 | |
1549 // find inner class info | |
1550 constantPoolHandle cp(thread, k->constants()); | |
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1551 int length = iter.length(); |
0 | 1552 |
1553 // Allocate temp. result array | |
1142 | 1554 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1555 objArrayHandle result (THREAD, r); |
1556 int members = 0; | |
1557 | |
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1558 for (; !iter.done(); iter.next()) { |
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1559 int ioff = iter.inner_class_info_index(); |
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1560 int ooff = iter.outer_class_info_index(); |
0 | 1561 |
1562 if (ioff != 0 && ooff != 0) { | |
1563 // Check to see if the name matches the class we're looking for | |
1564 // before attempting to find the class. | |
1565 if (cp->klass_name_at_matches(k, ooff)) { | |
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1566 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1567 if (outer_klass == k()) { |
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1568 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1569 instanceKlassHandle inner_klass (THREAD, ik); |
1570 | |
1571 // Throws an exception if outer klass has not declared k as | |
1572 // an inner klass | |
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1573 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1574 |
1575 result->obj_at_put(members, inner_klass->java_mirror()); | |
1576 members++; | |
1577 } | |
1578 } | |
1579 } | |
1580 } | |
1581 | |
1582 if (members != length) { | |
1583 // Return array of right length | |
1142 | 1584 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1585 for(int i = 0; i < members; i++) { |
1586 res->obj_at_put(i, result->obj_at(i)); | |
1587 } | |
1588 return (jobjectArray)JNIHandles::make_local(env, res); | |
1589 } | |
1590 | |
1591 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1592 JVM_END | |
1593 | |
1594 | |
1595 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1596 { |
0 | 1597 // ofClass is a reference to a java_lang_Class object. |
1598 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1599 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1600 return NULL; |
1601 } | |
1602 | |
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1603 bool inner_is_member = false; |
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1604 Klass* outer_klass |
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1605 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1606 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1607 if (outer_klass == NULL) return NULL; // already a top-level class |
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1608 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1609 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1610 } |
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1611 JVM_END |
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1612 |
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1613 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1614 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1615 bool* inner_is_member, |
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1616 TRAPS) { |
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1617 Thread* thread = THREAD; |
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1618 InnerClassesIterator iter(k); |
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1619 if (iter.length() == 0) { |
0 | 1620 // No inner class info => no declaring class |
1621 return NULL; | |
1622 } | |
1623 | |
1624 constantPoolHandle i_cp(thread, k->constants()); | |
1625 | |
1626 bool found = false; | |
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1627 Klass* ok; |
0 | 1628 instanceKlassHandle outer_klass; |
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1629 *inner_is_member = false; |
0 | 1630 |
1631 // Find inner_klass attribute | |
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1632 for (; !iter.done() && !found; iter.next()) { |
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1633 int ioff = iter.inner_class_info_index(); |
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1634 int ooff = iter.outer_class_info_index(); |
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1635 int noff = iter.inner_name_index(); |
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1636 if (ioff != 0) { |
0 | 1637 // Check to see if the name matches the class we're looking for |
1638 // before attempting to find the class. | |
1639 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1640 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1641 found = (k() == inner_klass); |
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1642 if (found && ooff != 0) { |
0 | 1643 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1644 outer_klass = instanceKlassHandle(thread, ok); | |
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1645 *inner_is_member = true; |
0 | 1646 } |
1647 } | |
1648 } | |
1649 } | |
1650 | |
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1651 if (found && outer_klass.is_null()) { |
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1652 // It may be anonymous; try for that. |
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1653 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1654 if (encl_method_class_idx != 0) { |
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1655 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1656 outer_klass = instanceKlassHandle(thread, ok); |
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1657 *inner_is_member = false; |
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1658 } |
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1659 } |
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1660 |
0 | 1661 // If no inner class attribute found for this class. |
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1662 if (outer_klass.is_null()) return NULL; |
0 | 1663 |
1664 // Throws an exception if outer klass has not declared k as an inner klass | |
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1665 // We need evidence that each klass knows about the other, or else |
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1666 // the system could allow a spoof of an inner class to gain access rights. |
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1667 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1668 return outer_klass(); |
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1669 } |
0 | 1670 |
1671 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1672 assert (cls != NULL, "illegal class"); | |
1673 JVMWrapper("JVM_GetClassSignature"); | |
1674 JvmtiVMObjectAllocEventCollector oam; | |
1675 ResourceMark rm(THREAD); | |
1676 // Return null for arrays and primatives | |
1677 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1678 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1679 if (k->oop_is_instance()) { |
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1680 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1681 if (sym == NULL) return NULL; |
0 | 1682 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1683 return (jstring) JNIHandles::make_local(env, str()); | |
1684 } | |
1685 } | |
1686 return NULL; | |
1687 JVM_END | |
1688 | |
1689 | |
1690 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1691 assert (cls != NULL, "illegal class"); | |
1692 JVMWrapper("JVM_GetClassAnnotations"); | |
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1693 |
0 | 1694 // Return null for arrays and primitives |
1695 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1696 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1697 if (k->oop_is_instance()) { |
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1698 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1699 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1700 } |
1701 } | |
1702 return NULL; | |
1703 JVM_END | |
1704 | |
1705 | |
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1706 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1707 // some of this code was adapted from from jni_FromReflectedField |
1708 | |
1709 oop reflected = JNIHandles::resolve_non_null(field); | |
1710 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1711 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1712 int slot = java_lang_reflect_Field::slot(reflected); |
1713 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1714 | |
1715 KlassHandle kh(THREAD, k); | |
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1716 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1717 |
1718 if (modifiers & JVM_ACC_STATIC) { | |
1719 // for static fields we only look in the current class | |
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1720 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1721 assert(false, "cannot find static field"); |
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1722 return false; |
0 | 1723 } |
1724 } else { | |
1725 // for instance fields we start with the current class and work | |
1726 // our way up through the superclass chain | |
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1727 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1728 assert(false, "cannot find instance field"); |
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1729 return false; |
0 | 1730 } |
1731 } | |
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1732 return true; |
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1733 } |
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1734 |
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1735 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1736 // field is a handle to a java.lang.reflect.Field object |
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1737 assert(field != NULL, "illegal field"); |
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1738 JVMWrapper("JVM_GetFieldAnnotations"); |
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1739 |
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1740 fieldDescriptor fd; |
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1741 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1742 if (!gotFd) { |
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1743 return NULL; |
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1744 } |
0 | 1745 |
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1746 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1747 JVM_END |
1748 | |
1749 | |
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1750 static Method* jvm_get_method_common(jobject method) { |
0 | 1751 // some of this code was adapted from from jni_FromReflectedMethod |
1752 | |
1753 oop reflected = JNIHandles::resolve_non_null(method); | |
1754 oop mirror = NULL; | |
1755 int slot = 0; | |
1756 | |
1142 | 1757 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1758 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1759 slot = java_lang_reflect_Constructor::slot(reflected); | |
1760 } else { | |
1142 | 1761 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1762 "wrong type"); |
1763 mirror = java_lang_reflect_Method::clazz(reflected); | |
1764 slot = java_lang_reflect_Method::slot(reflected); | |
1765 } | |
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1766 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1767 |
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1768 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1769 assert(m != NULL, "cannot find method"); |
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1770 return m; // caller has to deal with NULL in product mode |
0 | 1771 } |
1772 | |
1773 | |
1774 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1775 JVMWrapper("JVM_GetMethodAnnotations"); | |
1776 | |
1777 // method is a handle to a java.lang.reflect.Method object | |
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1778 Method* m = jvm_get_method_common(method); |
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1779 if (m == NULL) { |
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1780 return NULL; |
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1781 } |
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1782 |
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1783 return (jbyteArray) JNIHandles::make_local(env, |
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1784 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1785 JVM_END |
1786 | |
1787 | |
1788 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1789 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1790 | |
1791 // method is a handle to a java.lang.reflect.Method object | |
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1792 Method* m = jvm_get_method_common(method); |
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1793 if (m == NULL) { |
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1794 return NULL; |
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1795 } |
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1796 |
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1797 return (jbyteArray) JNIHandles::make_local(env, |
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1798 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1799 JVM_END |
1800 | |
1801 | |
1802 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1803 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1804 | |
1805 // method is a handle to a java.lang.reflect.Method object | |
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1806 Method* m = jvm_get_method_common(method); |
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1807 if (m == NULL) { |
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1808 return NULL; |
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1809 } |
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1810 |
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1811 return (jbyteArray) JNIHandles::make_local(env, |
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1812 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1813 JVM_END |
1814 | |
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1815 /* Type use annotations support (JDK 1.8) */ |
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1816 |
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1817 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1818 assert (cls != NULL, "illegal class"); |
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1819 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1820 ResourceMark rm(THREAD); |
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1821 // Return null for arrays and primitives |
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1822 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1823 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1824 if (k->oop_is_instance()) { |
8031 | 1825 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1826 if (type_annotations != NULL) { |
8031 | 1827 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1828 return (jbyteArray) JNIHandles::make_local(env, a); |
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1829 } |
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1830 } |
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1831 } |
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1832 return NULL; |
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1833 JVM_END |
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1834 |
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1835 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1836 assert (method != NULL, "illegal method"); |
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1837 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1838 |
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1839 // method is a handle to a java.lang.reflect.Method object |
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1840 Method* m = jvm_get_method_common(method); |
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1841 if (m == NULL) { |
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1842 return NULL; |
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1843 } |
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1844 |
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1845 AnnotationArray* type_annotations = m->type_annotations(); |
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1846 if (type_annotations != NULL) { |
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1847 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1848 return (jbyteArray) JNIHandles::make_local(env, a); |
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1849 } |
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1850 |
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1851 return NULL; |
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1852 JVM_END |
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1853 |
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1854 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1855 assert (field != NULL, "illegal field"); |
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1856 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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1857 |
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1858 fieldDescriptor fd; |
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1859 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1860 if (!gotFd) { |
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1861 return NULL; |
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1862 } |
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1863 |
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1864 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1865 JVM_END |
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1866 |
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1867 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1868 if (!cp->is_within_bounds(index)) { |
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1869 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1870 } |
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1871 } |
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1872 |
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1873 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1874 { |
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1875 JVMWrapper("JVM_GetMethodParameters"); |
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1876 // method is a handle to a java.lang.reflect.Method object |
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1877 Method* method_ptr = jvm_get_method_common(method); |
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1878 methodHandle mh (THREAD, method_ptr); |
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1879 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1880 const int num_params = mh->method_parameters_length(); |
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1881 |
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1882 if (0 != num_params) { |
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1883 // make sure all the symbols are properly formatted |
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1884 for (int i = 0; i < num_params; i++) { |
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1885 MethodParametersElement* params = mh->method_parameters_start(); |
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1886 int index = params[i].name_cp_index; |
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1887 bounds_check(mh->constants(), index, CHECK_NULL); |
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1888 |
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1889 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1890 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1891 "Wrong type at constant pool index"); |
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1892 } |
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1893 |
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1894 } |
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1895 |
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1896 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1897 objArrayHandle result (THREAD, result_oop); |
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1898 |
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1899 for (int i = 0; i < num_params; i++) { |
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1900 MethodParametersElement* params = mh->method_parameters_start(); |
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1901 // For a 0 index, give a NULL symbol |
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1902 Symbol* sym = 0 != params[i].name_cp_index ? |
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1903 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1904 int flags = params[i].flags; |
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1905 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1906 flags, CHECK_NULL); |
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1907 result->obj_at_put(i, param); |
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1908 } |
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1909 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1910 } else { |
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1911 return (jobjectArray)NULL; |
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1912 } |
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1913 } |
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1914 JVM_END |
0 | 1915 |
1916 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1917 | |
1918 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1919 { | |
1920 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1921 JvmtiVMObjectAllocEventCollector oam; | |
1922 | |
1923 // Exclude primitive types and array types | |
1924 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1925 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1926 // Return empty array |
1142 | 1927 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1928 return (jobjectArray) JNIHandles::make_local(env, res); |
1929 } | |
1930 | |
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1931 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1932 constantPoolHandle cp(THREAD, k->constants()); |
1933 | |
1934 // Ensure class is linked | |
1935 k->link_class(CHECK_NULL); | |
1936 | |
1937 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1938 bool skip_backtrace = false; | |
1939 | |
1940 // Allocate result | |
1941 int num_fields; | |
1942 | |
1943 if (publicOnly) { | |
1944 num_fields = 0; | |
3938 | 1945 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1946 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1947 } |
1948 } else { | |
3938 | 1949 num_fields = k->java_fields_count(); |
0 | 1950 |
1142 | 1951 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1952 num_fields--; |
1953 skip_backtrace = true; | |
1954 } | |
1955 } | |
1956 | |
1142 | 1957 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1958 objArrayHandle result (THREAD, r); |
1959 | |
1960 int out_idx = 0; | |
1961 fieldDescriptor fd; | |
3938 | 1962 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1963 if (skip_backtrace) { |
1964 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1965 int offset = fs.offset(); |
0 | 1966 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1967 } | |
1968 | |
3938 | 1969 if (!publicOnly || fs.access_flags().is_public()) { |
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1970 fd.reinitialize(k(), fs.index()); |
0 | 1971 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1972 result->obj_at_put(out_idx, field); | |
1973 ++out_idx; | |
1974 } | |
1975 } | |
1976 assert(out_idx == num_fields, "just checking"); | |
1977 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1978 } | |
1979 JVM_END | |
1980 | |
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1981 static bool select_method(methodHandle method, bool want_constructor) { |
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1982 if (want_constructor) { |
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1983 return (method->is_initializer() && !method->is_static()); |
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1984 } else { |
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1985 return (!method->is_initializer() && !method->is_overpass()); |
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1986 } |
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1987 } |
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1988 |
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1989 static jobjectArray get_class_declared_methods_helper( |
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1990 JNIEnv *env, |
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1991 jclass ofClass, jboolean publicOnly, |
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1992 bool want_constructor, |
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1993 Klass* klass, TRAPS) { |
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1994 |
0 | 1995 JvmtiVMObjectAllocEventCollector oam; |
1996 | |
1997 // Exclude primitive types and array types | |
1998 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1999 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 2000 // Return empty array |
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2001 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 2002 return (jobjectArray) JNIHandles::make_local(env, res); |
2003 } | |
2004 | |
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2005 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 2006 |
2007 // Ensure class is linked | |
2008 k->link_class(CHECK_NULL); | |
2009 | |
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2010 Array<Method*>* methods = k->methods(); |
0 | 2011 int methods_length = methods->length(); |
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2012 |
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2013 // Save original method_idnum in case of redefinition, which can change |
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2014 // the idnum of obsolete methods. The new method will have the same idnum |
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2015 // but if we refresh the methods array, the counts will be wrong. |
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2016 ResourceMark rm(THREAD); |
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2017 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 2018 int num_methods = 0; |
2019 | |
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2020 for (int i = 0; i < methods_length; i++) { |
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2021 methodHandle method(THREAD, methods->at(i)); |
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2022 if (select_method(method, want_constructor)) { |
0 | 2023 if (!publicOnly || method->is_public()) { |
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2024 idnums->push(method->method_idnum()); |
0 | 2025 ++num_methods; |
2026 } | |
2027 } | |
2028 } | |
2029 | |
2030 // Allocate result | |
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2031 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 2032 objArrayHandle result (THREAD, r); |
2033 | |
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2034 // Now just put the methods that we selected above, but go by their idnum |
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2035 // in case of redefinition. The methods can be redefined at any safepoint, |
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2036 // so above when allocating the oop array and below when creating reflect |
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2037 // objects. |
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2038 for (int i = 0; i < num_methods; i++) { |
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2039 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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2040 if (method.is_null()) { |
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2041 // Method may have been deleted and seems this API can handle null |
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2042 // Otherwise should probably put a method that throws NSME |
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2043 result->obj_at_put(i, NULL); |
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2044 } else { |
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2045 oop m; |
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2046 if (want_constructor) { |
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2047 m = Reflection::new_constructor(method, CHECK_NULL); |
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2048 } else { |
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2049 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 2050 } |
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2051 result->obj_at_put(i, m); |
0 | 2052 } |
2053 } | |
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2054 |
0 | 2055 return (jobjectArray) JNIHandles::make_local(env, result()); |
2056 } | |
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2057 |
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2058 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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2059 { |
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2060 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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2061 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2062 /*want_constructor*/ false, |
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2063 SystemDictionary::reflect_Method_klass(), THREAD); |
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2064 } |
0 | 2065 JVM_END |
2066 | |
2067 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
2068 { | |
2069 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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2070 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2071 /*want_constructor*/ true, |
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2072 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 2073 } |
2074 JVM_END | |
2075 | |
2076 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
2077 { | |
2078 JVMWrapper("JVM_GetClassAccessFlags"); | |
2079 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
2080 // Primitive type | |
2081 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
2082 } | |
2083 | |
6983 | 2084 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2085 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
2086 } | |
2087 JVM_END | |
2088 | |
2089 | |
2090 // Constant pool access ////////////////////////////////////////////////////////// | |
2091 | |
2092 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
2093 { | |
2094 JVMWrapper("JVM_GetClassConstantPool"); | |
2095 JvmtiVMObjectAllocEventCollector oam; | |
2096 | |
2097 // Return null for primitives and arrays | |
2098 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2099 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 2100 if (k->oop_is_instance()) { |
0 | 2101 instanceKlassHandle k_h(THREAD, k); |
2102 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2103 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 2104 return JNIHandles::make_local(jcp()); |
2105 } | |
2106 } | |
2107 return NULL; | |
2108 } | |
2109 JVM_END | |
2110 | |
2111 | |
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2112 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 2113 { |
2114 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2115 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2116 return cp->length(); |
2117 } | |
2118 JVM_END | |
2119 | |
2120 | |
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2121 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2122 { |
2123 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2124 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2125 bounds_check(cp, index, CHECK_NULL); |
2126 constantTag tag = cp->tag_at(index); | |
2127 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2128 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2129 } | |
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2130 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2131 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2132 } |
2133 JVM_END | |
2134 | |
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2135 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2136 { |
2137 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2138 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2139 bounds_check(cp, index, CHECK_NULL); |
2140 constantTag tag = cp->tag_at(index); | |
2141 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2142 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2143 } | |
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2144 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2145 if (k == NULL) return NULL; |
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2146 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2147 } |
2148 JVM_END | |
2149 | |
2150 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2151 constantTag tag = cp->tag_at(index); | |
2152 if (!tag.is_method() && !tag.is_interface_method()) { | |
2153 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2154 } | |
2155 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2156 Klass* k_o; |
0 | 2157 if (force_resolution) { |
2158 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2159 } else { | |
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2160 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2161 if (k_o == NULL) return NULL; |
2162 } | |
2163 instanceKlassHandle k(THREAD, k_o); | |
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2164 Symbol* name = cp->uncached_name_ref_at(index); |
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2165 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2166 methodHandle m (THREAD, k->find_method(name, sig)); |
2167 if (m.is_null()) { | |
2168 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2169 } | |
2170 oop method; | |
2171 if (!m->is_initializer() || m->is_static()) { | |
2172 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2173 } else { | |
2174 method = Reflection::new_constructor(m, CHECK_NULL); | |
2175 } | |
2176 return JNIHandles::make_local(method); | |
2177 } | |
2178 | |
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2179 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2180 { |
2181 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2182 JvmtiVMObjectAllocEventCollector oam; | |
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2183 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2184 bounds_check(cp, index, CHECK_NULL); |
2185 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2186 return res; | |
2187 } | |
2188 JVM_END | |
2189 | |
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2190 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2191 { |
2192 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2193 JvmtiVMObjectAllocEventCollector oam; | |
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2194 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2195 bounds_check(cp, index, CHECK_NULL); |
2196 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2197 return res; | |
2198 } | |
2199 JVM_END | |
2200 | |
2201 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2202 constantTag tag = cp->tag_at(index); | |
2203 if (!tag.is_field()) { | |
2204 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2205 } | |
2206 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2207 Klass* k_o; |
0 | 2208 if (force_resolution) { |
2209 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2210 } else { | |
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2211 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2212 if (k_o == NULL) return NULL; |
2213 } | |
2214 instanceKlassHandle k(THREAD, k_o); | |
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2215 Symbol* name = cp->uncached_name_ref_at(index); |
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2216 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2217 fieldDescriptor fd; |
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2218 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2219 if (target_klass == NULL) { |
2220 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2221 } | |
2222 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2223 return JNIHandles::make_local(field); | |
2224 } | |
2225 | |
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2226 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2227 { |
2228 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2229 JvmtiVMObjectAllocEventCollector oam; | |
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2230 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2231 bounds_check(cp, index, CHECK_NULL); |
2232 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2233 return res; | |
2234 } | |
2235 JVM_END | |
2236 | |
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2237 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2238 { |
2239 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2240 JvmtiVMObjectAllocEventCollector oam; | |
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2241 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2242 bounds_check(cp, index, CHECK_NULL); |
2243 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2244 return res; | |
2245 } | |
2246 JVM_END | |
2247 | |
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2248 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2249 { |
2250 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2251 JvmtiVMObjectAllocEventCollector oam; | |
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2252 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2253 bounds_check(cp, index, CHECK_NULL); |
2254 constantTag tag = cp->tag_at(index); | |
2255 if (!tag.is_field_or_method()) { | |
2256 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2257 } | |
2258 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2259 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2260 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2261 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2262 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2263 objArrayHandle dest(THREAD, dest_o); |
2264 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2265 dest->obj_at_put(0, str()); | |
2266 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2267 dest->obj_at_put(1, str()); | |
2268 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2269 dest->obj_at_put(2, str()); | |
2270 return (jobjectArray) JNIHandles::make_local(dest()); | |
2271 } | |
2272 JVM_END | |
2273 | |
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2274 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2275 { |
2276 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2277 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2278 bounds_check(cp, index, CHECK_0); |
2279 constantTag tag = cp->tag_at(index); | |
2280 if (!tag.is_int()) { | |
2281 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2282 } | |
2283 return cp->int_at(index); | |
2284 } | |
2285 JVM_END | |
2286 | |
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2287 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2288 { |
2289 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2290 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2291 bounds_check(cp, index, CHECK_(0L)); |
2292 constantTag tag = cp->tag_at(index); | |
2293 if (!tag.is_long()) { | |
2294 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2295 } | |
2296 return cp->long_at(index); | |
2297 } | |
2298 JVM_END | |
2299 | |
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2300 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2301 { |
2302 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2303 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2304 bounds_check(cp, index, CHECK_(0.0f)); |
2305 constantTag tag = cp->tag_at(index); | |
2306 if (!tag.is_float()) { | |
2307 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2308 } | |
2309 return cp->float_at(index); | |
2310 } | |
2311 JVM_END | |
2312 | |
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2313 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2314 { |
2315 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2316 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2317 bounds_check(cp, index, CHECK_(0.0)); |
2318 constantTag tag = cp->tag_at(index); | |
2319 if (!tag.is_double()) { | |
2320 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2321 } | |
2322 return cp->double_at(index); | |
2323 } | |
2324 JVM_END | |
2325 | |
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2326 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2327 { |
2328 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2329 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2330 bounds_check(cp, index, CHECK_NULL); |
2331 constantTag tag = cp->tag_at(index); | |
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2332 if (!tag.is_string()) { |
0 | 2333 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2334 } | |
2335 oop str = cp->string_at(index, CHECK_NULL); | |
2336 return (jstring) JNIHandles::make_local(str); | |
2337 } | |
2338 JVM_END | |
2339 | |
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2340 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2341 { |
2342 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2343 JvmtiVMObjectAllocEventCollector oam; | |
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2344 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2345 bounds_check(cp, index, CHECK_NULL); |
2346 constantTag tag = cp->tag_at(index); | |
2347 if (!tag.is_symbol()) { | |
2348 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2349 } | |
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2350 Symbol* sym = cp->symbol_at(index); |
0 | 2351 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2352 return (jstring) JNIHandles::make_local(str()); | |
2353 } | |
2354 JVM_END | |
2355 | |
2356 | |
2357 // Assertion support. ////////////////////////////////////////////////////////// | |
2358 | |
2359 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2360 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2361 assert(cls != NULL, "bad class"); | |
2362 | |
2363 oop r = JNIHandles::resolve(cls); | |
2364 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2365 if (java_lang_Class::is_primitive(r)) return false; | |
2366 | |
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2367 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2368 assert(k->oop_is_instance(), "must be an instance klass"); |
2369 if (! k->oop_is_instance()) return false; | |
0 | 2370 |
2371 ResourceMark rm(THREAD); | |
6983 | 2372 const char* name = k->name()->as_C_string(); |
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2373 bool system_class = k->class_loader() == NULL JVMCI_ONLY(|| SystemDictionary::in_jvmci_loader_hierarchy(k->class_loader())); |
0 | 2374 return JavaAssertions::enabled(name, system_class); |
2375 | |
2376 JVM_END | |
2377 | |
2378 | |
2379 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2380 // command-line assertion arguments (i.e., -ea, -da). | |
2381 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2382 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2383 JvmtiVMObjectAllocEventCollector oam; | |
2384 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2385 return JNIHandles::make_local(env, asd); | |
2386 JVM_END | |
2387 | |
2388 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2389 | |
2390 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2391 | |
2392 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2393 // All functions from this section should call the jvmtiThreadSate function: | |
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2394 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2395 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2396 // was invoked in the middle of the class redefinition. |
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2397 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2398 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2399 | |
2400 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2401 JVMWrapper("JVM_GetClassNameUTF"); | |
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2402 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2403 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2404 return k->name()->as_utf8(); |
0 | 2405 JVM_END |
2406 | |
2407 | |
2408 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2409 JVMWrapper("JVM_GetClassCPTypes"); | |
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2410 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2411 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2412 // types will have length zero if this is not an InstanceKlass |
0 | 2413 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2414 if (k->oop_is_instance()) { |
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2415 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2416 for (int index = cp->length() - 1; index >= 0; index--) { |
2417 constantTag tag = cp->tag_at(index); | |
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2418 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2419 } |
2420 } | |
2421 JVM_END | |
2422 | |
2423 | |
2424 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2425 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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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)->constants()->length(); |
0 | 2431 JVM_END |
2432 | |
2433 | |
2434 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2435 JVMWrapper("JVM_GetClassFieldsCount"); | |
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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)->java_fields_count(); |
0 | 2441 JVM_END |
2442 | |
2443 | |
2444 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2445 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2446 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2447 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2448 if (!k->oop_is_instance()) |
0 | 2449 return 0; |
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2450 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2451 JVM_END |
2452 | |
2453 | |
2454 // The following methods, used for the verifier, are never called with | |
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2455 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2456 // Typically, these methods are called in a loop with bounds determined |
2457 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2458 // zero for arrays. | |
2459 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2460 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2461 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2462 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2463 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2464 int length = method->checked_exceptions_length(); |
0 | 2465 if (length > 0) { |
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2466 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2467 for (int i = 0; i < length; i++) { |
2468 exceptions[i] = table[i].class_cp_index; | |
2469 } | |
2470 } | |
2471 JVM_END | |
2472 | |
2473 | |
2474 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2475 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2476 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2477 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2478 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2479 return method->checked_exceptions_length(); |
0 | 2480 JVM_END |
2481 | |
2482 | |
2483 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2484 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2485 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2486 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2487 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2488 memcpy(code, method->code_base(), method->code_size()); |
0 | 2489 JVM_END |
2490 | |
2491 | |
2492 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2493 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2494 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2495 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2496 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2497 return method->code_size(); |
0 | 2498 JVM_END |
2499 | |
2500 | |
2501 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2502 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2503 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2504 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2505 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2506 ExceptionTable extable(method); |
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2507 entry->start_pc = extable.start_pc(entry_index); |
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2508 entry->end_pc = extable.end_pc(entry_index); |
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2509 entry->handler_pc = extable.handler_pc(entry_index); |
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2510 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2511 JVM_END |
2512 | |
2513 | |
2514 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2515 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2516 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2517 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2518 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2519 return method->exception_table_length(); |
0 | 2520 JVM_END |
2521 | |
2522 | |
2523 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2524 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2525 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2526 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2527 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2528 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2529 JVM_END |
2530 | |
2531 | |
2532 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2533 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2534 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2535 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2536 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2537 JVM_END |
2538 | |
2539 | |
2540 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2541 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2542 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2543 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2544 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2545 return method->max_locals(); |
0 | 2546 JVM_END |
2547 | |
2548 | |
2549 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2550 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2551 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2552 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2553 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2554 return method->size_of_parameters(); |
0 | 2555 JVM_END |
2556 | |
2557 | |
2558 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2559 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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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->verifier_max_stack(); |
0 | 2564 JVM_END |
2565 | |
2566 | |
2567 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2568 JVMWrapper("JVM_IsConstructorIx"); | |
2569 ResourceMark rm(THREAD); | |
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2570 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 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->name() == vmSymbols::object_initializer_name(); |
0 | 2574 JVM_END |
2575 | |
2576 | |
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2577 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2578 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2579 ResourceMark rm(THREAD); |
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2580 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2581 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2582 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2583 return method->is_overpass(); |
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2584 JVM_END |
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2585 |
0 | 2586 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2587 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2588 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2589 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2590 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2591 return method->name()->as_utf8(); |
0 | 2592 JVM_END |
2593 | |
2594 | |
2595 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2596 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2597 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2598 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2599 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2600 return method->signature()->as_utf8(); |
0 | 2601 JVM_END |
2602 | |
2603 /** | |
2604 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2605 * read entries in the constant pool. Since the old verifier always | |
2606 * works on a copy of the code, it will not see any rewriting that | |
2607 * may possibly occur in the middle of verification. So it is important | |
2608 * that nothing it calls tries to use the cpCache instead of the raw | |
2609 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2610 */ | |
2611 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2612 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2613 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2614 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2615 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2616 switch (cp->tag_at(cp_index).value()) { |
2617 case JVM_CONSTANT_Fieldref: | |
2618 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2619 default: | |
2620 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2621 } | |
2622 ShouldNotReachHere(); | |
2623 return NULL; | |
2624 JVM_END | |
2625 | |
2626 | |
2627 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2628 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2629 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2630 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2631 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2632 switch (cp->tag_at(cp_index).value()) { |
2633 case JVM_CONSTANT_InterfaceMethodref: | |
2634 case JVM_CONSTANT_Methodref: | |
2635 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2636 default: | |
2637 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2638 } | |
2639 ShouldNotReachHere(); | |
2640 return NULL; | |
2641 JVM_END | |
2642 | |
2643 | |
2644 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2645 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2646 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2647 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2648 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2649 switch (cp->tag_at(cp_index).value()) { |
2650 case JVM_CONSTANT_InterfaceMethodref: | |
2651 case JVM_CONSTANT_Methodref: | |
2652 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2653 default: | |
2654 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2655 } | |
2656 ShouldNotReachHere(); | |
2657 return NULL; | |
2658 JVM_END | |
2659 | |
2660 | |
2661 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2662 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2663 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2664 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2665 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2666 switch (cp->tag_at(cp_index).value()) { |
2667 case JVM_CONSTANT_Fieldref: | |
2668 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2669 default: | |
2670 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2671 } | |
2672 ShouldNotReachHere(); | |
2673 return NULL; | |
2674 JVM_END | |
2675 | |
2676 | |
2677 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2678 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2679 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2680 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2681 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2682 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2683 return classname->as_utf8(); |
2684 JVM_END | |
2685 | |
2686 | |
2687 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2688 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2689 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2690 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2691 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2692 switch (cp->tag_at(cp_index).value()) { |
2693 case JVM_CONSTANT_Fieldref: { | |
2694 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2695 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2696 return classname->as_utf8(); |
2697 } | |
2698 default: | |
2699 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2700 } | |
2701 ShouldNotReachHere(); | |
2702 return NULL; | |
2703 JVM_END | |
2704 | |
2705 | |
2706 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2707 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2708 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2709 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2710 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2711 switch (cp->tag_at(cp_index).value()) { |
2712 case JVM_CONSTANT_Methodref: | |
2713 case JVM_CONSTANT_InterfaceMethodref: { | |
2714 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2715 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2716 return classname->as_utf8(); |
2717 } | |
2718 default: | |
2719 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2720 } | |
2721 ShouldNotReachHere(); | |
2722 return NULL; | |
2723 JVM_END | |
2724 | |
2725 | |
3938 | 2726 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2727 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2728 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2729 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2730 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2731 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2732 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2733 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2734 switch (cp->tag_at(cp_index).value()) { |
2735 case JVM_CONSTANT_Fieldref: { | |
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2736 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2737 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2738 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2739 if (fs.name() == name && fs.signature() == signature) { | |
2740 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2741 } |
2742 } | |
2743 return -1; | |
2744 } | |
2745 default: | |
2746 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2747 } | |
2748 ShouldNotReachHere(); | |
2749 return 0; | |
2750 JVM_END | |
2751 | |
2752 | |
2753 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2754 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2755 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2756 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2757 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2758 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2759 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2760 switch (cp->tag_at(cp_index).value()) { |
2761 case JVM_CONSTANT_Methodref: | |
2762 case JVM_CONSTANT_InterfaceMethodref: { | |
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2763 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2764 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2765 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2766 int methods_count = methods->length(); |
2767 for (int i = 0; i < methods_count; i++) { | |
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2768 Method* method = methods->at(i); |
0 | 2769 if (method->name() == name && method->signature() == signature) { |
2770 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2771 } | |
2772 } | |
2773 return -1; | |
2774 } | |
2775 default: | |
2776 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2777 } | |
2778 ShouldNotReachHere(); | |
2779 return 0; | |
2780 JVM_END | |
2781 | |
2782 | |
2783 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2784 | |
2785 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2786 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2787 JVM_END | |
2788 | |
2789 | |
2790 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2791 JVMWrapper("JVM_IsSameClassPackage"); | |
2792 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2793 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2794 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2795 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2796 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2797 JVM_END | |
2798 | |
2799 | |
2800 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2801 | |
2802 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2803 JVMWrapper2("JVM_Open (%s)", fname); | |
2804 | |
2805 //%note jvm_r6 | |
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|
2806 int result = os::open(fname, flags, mode); |
0 | 2807 if (result >= 0) { |
2808 return result; | |
2809 } else { | |
2810 switch(errno) { | |
2811 case EEXIST: | |
2812 return JVM_EEXIST; | |
2813 default: | |
2814 return -1; | |
2815 } | |
2816 } | |
2817 JVM_END | |
2818 | |
2819 | |
2820 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2821 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2822 //%note jvm_r6 | |
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diff
changeset
|
2823 return os::close(fd); |
0 | 2824 JVM_END |
2825 | |
2826 | |
2827 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2828 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2829 | |
2830 //%note jvm_r6 | |
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|
2831 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2832 JVM_END |
2833 | |
2834 | |
2835 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2836 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2837 | |
2838 //%note jvm_r6 | |
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|
2839 return (jint)os::write(fd, buf, nbytes); |
0 | 2840 JVM_END |
2841 | |
2842 | |
2843 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2844 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2845 //%note jvm_r6 | |
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|
2846 return os::available(fd, pbytes); |
0 | 2847 JVM_END |
2848 | |
2849 | |
2850 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
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|
2851 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
0 | 2852 //%note jvm_r6 |
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changeset
|
2853 return os::lseek(fd, offset, whence); |
0 | 2854 JVM_END |
2855 | |
2856 | |
2857 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
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|
2858 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
1980
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changeset
|
2859 return os::ftruncate(fd, length); |
0 | 2860 JVM_END |
2861 | |
2862 | |
2863 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2864 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2865 //%note jvm_r6 | |
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|
2866 return os::fsync(fd); |
0 | 2867 JVM_END |
2868 | |
2869 | |
2870 // Printing support ////////////////////////////////////////////////// | |
2871 extern "C" { | |
2872 | |
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|
2873 ATTRIBUTE_PRINTF(3, 0) |
0 | 2874 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
2875 // see bug 4399518, 4417214 | |
2876 if ((intptr_t)count <= 0) return -1; | |
23967
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|
2877 |
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|
2878 int result = vsnprintf(str, count, fmt, args); |
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|
2879 // Note: on truncation vsnprintf(3) on Unix returns number of |
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|
2880 // characters which would have been written had the buffer been large |
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|
2881 // enough; on Windows, it returns -1. We handle both cases here and |
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|
2882 // always return -1, and perform null termination. |
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|
2883 if ((result > 0 && (size_t)result >= count) || result == -1) { |
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|
2884 str[count - 1] = '\0'; |
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|
2885 result = -1; |
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|
2886 } |
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|
2887 |
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|
2888 return result; |
0 | 2889 } |
2890 | |
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|
2891 ATTRIBUTE_PRINTF(3, 0) |
0 | 2892 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
2893 va_list args; | |
2894 int len; | |
2895 va_start(args, fmt); | |
2896 len = jio_vsnprintf(str, count, fmt, args); | |
2897 va_end(args); | |
2898 return len; | |
2899 } | |
2900 | |
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|
2901 ATTRIBUTE_PRINTF(2,3) |
0 | 2902 int jio_fprintf(FILE* f, const char *fmt, ...) { |
2903 int len; | |
2904 va_list args; | |
2905 va_start(args, fmt); | |
2906 len = jio_vfprintf(f, fmt, args); | |
2907 va_end(args); | |
2908 return len; | |
2909 } | |
2910 | |
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|
2911 ATTRIBUTE_PRINTF(2, 0) |
0 | 2912 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
2913 if (Arguments::vfprintf_hook() != NULL) { | |
2914 return Arguments::vfprintf_hook()(f, fmt, args); | |
2915 } else { | |
2916 return vfprintf(f, fmt, args); | |
2917 } | |
2918 } | |
2919 | |
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2920 ATTRIBUTE_PRINTF(1, 2) |
2191 | 2921 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2922 int len; |
2923 va_list args; | |
2924 va_start(args, fmt); | |
2925 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2926 va_end(args); | |
2927 return len; | |
2928 } | |
2929 | |
2930 | |
2931 // HotSpot specific jio method | |
2932 void jio_print(const char* s) { | |
2933 // Try to make this function as atomic as possible. | |
2934 if (Arguments::vfprintf_hook() != NULL) { | |
2935 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2936 } else { | |
513
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|
2937 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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2938 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2939 } |
2940 } | |
2941 | |
2942 } // Extern C | |
2943 | |
2944 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2945 | |
2946 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2947 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2948 // OSThread objects. The exception to this rule is when the target object is the thread | |
2949 // doing the operation, in which case we know that the thread won't exit until the | |
2950 // operation is done (all exits being voluntary). There are a few cases where it is | |
2951 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2952 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2953 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2954 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2955 // implementation is local to this file, we always lock Threads_lock for that one. | |
2956 | |
2957 static void thread_entry(JavaThread* thread, TRAPS) { | |
2958 HandleMark hm(THREAD); | |
2959 Handle obj(THREAD, thread->threadObj()); | |
2960 JavaValue result(T_VOID); | |
2961 JavaCalls::call_virtual(&result, | |
2962 obj, | |
1142 | 2963 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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2964 vmSymbols::run_method_name(), |
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|
2965 vmSymbols::void_method_signature(), |
0 | 2966 THREAD); |
2967 } | |
2968 | |
2969 | |
2970 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2971 JVMWrapper("JVM_StartThread"); | |
2972 JavaThread *native_thread = NULL; | |
2973 | |
2974 // We cannot hold the Threads_lock when we throw an exception, | |
2975 // due to rank ordering issues. Example: we might need to grab the | |
2976 // Heap_lock while we construct the exception. | |
2977 bool throw_illegal_thread_state = false; | |
2978 | |
2979 // We must release the Threads_lock before we can post a jvmti event | |
2980 // in Thread::start. | |
2981 { | |
2982 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2983 // we operate. | |
2984 MutexLocker mu(Threads_lock); | |
2985 | |
2162
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diff
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|
2986 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
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2987 // re-starting an already started thread, so we should usually find |
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|
2988 // that the JavaThread is null. However for a JNI attached thread |
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|
2989 // there is a small window between the Thread object being created |
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2990 // (with its JavaThread set) and the update to its threadStatus, so we |
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|
2991 // have to check for this |
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|
2992 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
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|
2993 throw_illegal_thread_state = true; |
0 | 2994 } else { |
2162
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diff
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|
2995 // We could also check the stillborn flag to see if this thread was already stopped, but |
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|
2996 // for historical reasons we let the thread detect that itself when it starts running |
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|
2997 |
0 | 2998 jlong size = |
2999 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
3000 // Allocate the C++ Thread structure and create the native thread. The | |
3001 // stack size retrieved from java is signed, but the constructor takes | |
3002 // size_t (an unsigned type), so avoid passing negative values which would | |
3003 // result in really large stacks. | |
3004 size_t sz = size > 0 ? (size_t) size : 0; | |
3005 native_thread = new JavaThread(&thread_entry, sz); | |
3006 | |
3007 // At this point it may be possible that no osthread was created for the | |
3008 // JavaThread due to lack of memory. Check for this situation and throw | |
3009 // an exception if necessary. Eventually we may want to change this so | |
3010 // that we only grab the lock if the thread was created successfully - | |
3011 // then we can also do this check and throw the exception in the | |
3012 // JavaThread constructor. | |
3013 if (native_thread->osthread() != NULL) { | |
3014 // Note: the current thread is not being used within "prepare". | |
3015 native_thread->prepare(jthread); | |
3016 } | |
3017 } | |
3018 } | |
3019 | |
3020 if (throw_illegal_thread_state) { | |
3021 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
3022 } | |
3023 | |
3024 assert(native_thread != NULL, "Starting null thread?"); | |
3025 | |
3026 if (native_thread->osthread() == NULL) { | |
3027 // No one should hold a reference to the 'native_thread'. | |
3028 delete native_thread; | |
3029 if (JvmtiExport::should_post_resource_exhausted()) { | |
3030 JvmtiExport::post_resource_exhausted( | |
3031 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
3032 "unable to create new native thread"); | |
3033 } | |
3034 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
3035 "unable to create new native thread"); | |
3036 } | |
3037 | |
3038 Thread::start(native_thread); | |
3039 | |
3040 JVM_END | |
3041 | |
3042 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
3043 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
3044 // 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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|
3045 // same thread as the sender, no safepoint is needed. |
0 | 3046 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
3047 JVMWrapper("JVM_StopThread"); | |
3048 | |
3049 oop java_throwable = JNIHandles::resolve(throwable); | |
3050 if (java_throwable == NULL) { | |
3051 THROW(vmSymbols::java_lang_NullPointerException()); | |
3052 } | |
3053 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3054 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
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7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
3055 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
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4717
diff
changeset
|
3056 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
17937
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diff
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|
3057 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
2162
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|
3058 // First check if thread is alive |
0 | 3059 if (receiver != NULL) { |
3060 // Check if exception is getting thrown at self (use oop equality, since the | |
3061 // target object might exit) | |
3062 if (java_thread == thread->threadObj()) { | |
3063 THROW_OOP(java_throwable); | |
3064 } else { | |
3065 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
3066 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
3067 } | |
3068 } | |
2162
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diff
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|
3069 else { |
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diff
changeset
|
3070 // Either: |
ccfcb502af3f
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diff
changeset
|
3071 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
3072 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
3073 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
3074 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
3075 // stillborn flag for the first case, and if the thread has already |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
3076 // exited setting this flag has no affect |
ccfcb502af3f
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diff
changeset
|
3077 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
3078 } |
0 | 3079 JVM_END |
3080 | |
3081 | |
3082 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
3083 JVMWrapper("JVM_IsThreadAlive"); | |
3084 | |
3085 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
3086 return java_lang_Thread::is_alive(thread_oop); | |
3087 JVM_END | |
3088 | |
3089 | |
3090 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
3091 JVMWrapper("JVM_SuspendThread"); | |
3092 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3093 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
3094 | |
3095 if (receiver != NULL) { | |
3096 // thread has run and has not exited (still on threads list) | |
3097 | |
3098 { | |
3099 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
3100 if (receiver->is_external_suspend()) { | |
3101 // Don't allow nested external suspend requests. We can't return | |
3102 // an error from this interface so just ignore the problem. | |
3103 return; | |
3104 } | |
3105 if (receiver->is_exiting()) { // thread is in the process of exiting | |
3106 return; | |
3107 } | |
3108 receiver->set_external_suspend(); | |
3109 } | |
3110 | |
3111 // java_suspend() will catch threads in the process of exiting | |
3112 // and will ignore them. | |
3113 receiver->java_suspend(); | |
3114 | |
3115 // It would be nice to have the following assertion in all the | |
3116 // time, but it is possible for a racing resume request to have | |
3117 // resumed this thread right after we suspended it. Temporarily | |
3118 // enable this assertion if you are chasing a different kind of | |
3119 // bug. | |
3120 // | |
3121 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
3122 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
3123 } | |
3124 JVM_END | |
3125 | |
3126 | |
3127 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3128 JVMWrapper("JVM_ResumeThread"); | |
3129 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3130 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3131 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3132 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3133 // looks at it. | |
3134 MutexLocker ml(Threads_lock); | |
3135 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3136 if (thr != NULL) { | |
3137 // the thread has run and is not in the process of exiting | |
3138 thr->java_resume(); | |
3139 } | |
3140 JVM_END | |
3141 | |
3142 | |
3143 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3144 JVMWrapper("JVM_SetThreadPriority"); | |
3145 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3146 MutexLocker ml(Threads_lock); | |
3147 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3148 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3149 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3150 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3151 Thread::set_priority(thr, (ThreadPriority)prio); | |
3152 } | |
3153 JVM_END | |
3154 | |
3155 | |
3156 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3157 JVMWrapper("JVM_Yield"); | |
3158 if (os::dont_yield()) return; | |
4006 | 3159 #ifndef USDT2 |
1324
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1144
diff
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|
3160 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3161 #else /* USDT2 */ |
3162 HOTSPOT_THREAD_YIELD(); | |
3163 #endif /* USDT2 */ | |
0 | 3164 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3165 // Critical for similar threading behaviour | |
3166 if (ConvertYieldToSleep) { | |
3167 os::sleep(thread, MinSleepInterval, false); | |
3168 } else { | |
3169 os::yield(); | |
3170 } | |
3171 JVM_END | |
3172 | |
3173 | |
3174 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3175 JVMWrapper("JVM_Sleep"); | |
3176 | |
3177 if (millis < 0) { | |
3178 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3179 } | |
3180 | |
3181 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3182 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3183 } | |
3184 | |
3185 // Save current thread state and restore it at the end of this block. | |
3186 // And set new thread state to SLEEPING. | |
3187 JavaThreadSleepState jtss(thread); | |
3188 | |
4006 | 3189 #ifndef USDT2 |
1324
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1144
diff
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|
3190 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3191 #else /* USDT2 */ |
3192 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3193 millis); | |
3194 #endif /* USDT2 */ | |
1324
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1144
diff
changeset
|
3195 |
10405 | 3196 EventThreadSleep event; |
3197 | |
0 | 3198 if (millis == 0) { |
3199 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3200 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3201 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3202 // for SOLARIS | |
3203 if (ConvertSleepToYield) { | |
3204 os::yield(); | |
3205 } else { | |
3206 ThreadState old_state = thread->osthread()->get_state(); | |
3207 thread->osthread()->set_state(SLEEPING); | |
3208 os::sleep(thread, MinSleepInterval, false); | |
3209 thread->osthread()->set_state(old_state); | |
3210 } | |
3211 } else { | |
3212 ThreadState old_state = thread->osthread()->get_state(); | |
3213 thread->osthread()->set_state(SLEEPING); | |
3214 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3215 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3216 // us while we were sleeping. We do not overwrite those. | |
3217 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3218 if (event.should_commit()) { |
3219 event.set_time(millis); | |
3220 event.commit(); | |
3221 } | |
4006 | 3222 #ifndef USDT2 |
1324
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1144
diff
changeset
|
3223 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3224 #else /* USDT2 */ |
3225 HOTSPOT_THREAD_SLEEP_END( | |
3226 1); | |
3227 #endif /* USDT2 */ | |
0 | 3228 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3229 // to properly restore the thread state. That's likely wrong. | |
3230 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3231 } | |
3232 } | |
3233 thread->osthread()->set_state(old_state); | |
3234 } | |
10405 | 3235 if (event.should_commit()) { |
3236 event.set_time(millis); | |
3237 event.commit(); | |
3238 } | |
4006 | 3239 #ifndef USDT2 |
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1144
diff
changeset
|
3240 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3241 #else /* USDT2 */ |
3242 HOTSPOT_THREAD_SLEEP_END( | |
3243 0); | |
3244 #endif /* USDT2 */ | |
0 | 3245 JVM_END |
3246 | |
3247 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3248 JVMWrapper("JVM_CurrentThread"); | |
3249 oop jthread = thread->threadObj(); | |
3250 assert (thread != NULL, "no current thread!"); | |
3251 return JNIHandles::make_local(env, jthread); | |
3252 JVM_END | |
3253 | |
3254 | |
3255 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3256 JVMWrapper("JVM_CountStackFrames"); | |
3257 | |
3258 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3259 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3260 bool throw_illegal_thread_state = false; | |
3261 int count = 0; | |
3262 | |
3263 { | |
3264 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3265 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3266 // acquire of the lock | |
3267 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3268 | |
3269 if (thr == NULL) { | |
3270 // do nothing | |
3271 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3272 // Check whether this java thread has been suspended already. If not, throws | |
3273 // IllegalThreadStateException. We defer to throw that exception until | |
3274 // Threads_lock is released since loading exception class has to leave VM. | |
3275 // The correct way to test a thread is actually suspended is | |
3276 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3277 // the Threads_lock. The above tests are sufficient for our purposes | |
3278 // provided the walkability of the stack is stable - which it isn't | |
3279 // 100% but close enough for most practical purposes. | |
3280 throw_illegal_thread_state = true; | |
3281 } else { | |
3282 // Count all java activation, i.e., number of vframes | |
3283 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3284 // Native frames are not counted | |
3285 if (!vfst.method()->is_native()) count++; | |
3286 } | |
3287 } | |
3288 } | |
3289 | |
3290 if (throw_illegal_thread_state) { | |
3291 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3292 "this thread is not suspended"); | |
3293 } | |
3294 return count; | |
3295 JVM_END | |
3296 | |
3297 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3298 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3299 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3300 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3301 // outside the critical section. Threads_lock is hot so we want to minimize | |
3302 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3303 // two steps. The 1st phase, performed under Threads_lock, would return | |
3304 // a closure that'd be invoked after Threads_lock was dropped. | |
3305 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3306 // admit spurious wakeups. | |
3307 | |
3308 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3309 JVMWrapper("JVM_Interrupt"); | |
3310 | |
3311 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3312 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3313 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3314 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3315 // acquire of the lock | |
3316 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3317 if (thr != NULL) { | |
3318 Thread::interrupt(thr); | |
3319 } | |
3320 JVM_END | |
3321 | |
3322 | |
3323 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3324 JVMWrapper("JVM_IsInterrupted"); | |
3325 | |
3326 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3327 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3328 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3329 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3330 // acquire of the lock | |
3331 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3332 if (thr == NULL) { | |
3333 return JNI_FALSE; | |
3334 } else { | |
3335 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3336 } | |
3337 JVM_END | |
3338 | |
3339 | |
3340 // Return true iff the current thread has locked the object passed in | |
3341 | |
3342 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3343 JVMWrapper("JVM_HoldsLock"); | |
3344 assert(THREAD->is_Java_thread(), "sanity check"); | |
3345 if (obj == NULL) { | |
3346 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3347 } | |
3348 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3349 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3350 JVM_END | |
3351 | |
3352 | |
3353 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3354 JVMWrapper("JVM_DumpAllStacks"); | |
3355 VM_PrintThreads op; | |
3356 VMThread::execute(&op); | |
3357 if (JvmtiExport::should_post_data_dump()) { | |
3358 JvmtiExport::post_data_dump(); | |
3359 } | |
3360 JVM_END | |
3361 | |
4006 | 3362 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3363 JVMWrapper("JVM_SetNativeThreadName"); | |
3364 ResourceMark rm(THREAD); | |
3365 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3366 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3367 // Thread naming only supported for the current thread, doesn't work for | |
3368 // target threads. | |
3369 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3370 // we don't set the name of an attached thread to avoid stepping | |
3371 // on other programs | |
3372 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3373 os::set_native_thread_name(thread_name); | |
3374 } | |
3375 JVM_END | |
0 | 3376 |
3377 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3378 | |
3379 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3380 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3381 if (jthread->privileged_stack_top() == NULL) return false; | |
3382 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3383 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3384 if (loader == NULL) return true; | |
3385 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3386 if (trusted) return true; | |
3387 } | |
3388 return false; | |
3389 } | |
3390 | |
3391 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3392 JVMWrapper("JVM_CurrentLoadedClass"); | |
3393 ResourceMark rm(THREAD); | |
3394 | |
3395 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3396 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3397 bool trusted = is_trusted_frame(thread, &vfst); | |
3398 if (trusted) return NULL; | |
3399 | |
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3400 Method* m = vfst.method(); |
0 | 3401 if (!m->is_native()) { |
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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3402 InstanceKlass* holder = m->method_holder(); |
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|
3403 oop loader = holder->class_loader(); |
0 | 3404 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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diff
changeset
|
3405 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3406 } |
3407 } | |
3408 } | |
3409 return NULL; | |
3410 JVM_END | |
3411 | |
3412 | |
3413 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3414 JVMWrapper("JVM_CurrentClassLoader"); | |
3415 ResourceMark rm(THREAD); | |
3416 | |
3417 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3418 | |
3419 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3420 bool trusted = is_trusted_frame(thread, &vfst); | |
3421 if (trusted) return NULL; | |
3422 | |
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3423 Method* m = vfst.method(); |
0 | 3424 if (!m->is_native()) { |
6940
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diff
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|
3425 InstanceKlass* holder = m->method_holder(); |
0 | 3426 assert(holder->is_klass(), "just checking"); |
6940
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|
3427 oop loader = holder->class_loader(); |
0 | 3428 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3429 return JNIHandles::make_local(env, loader); | |
3430 } | |
3431 } | |
3432 } | |
3433 return NULL; | |
3434 JVM_END | |
3435 | |
3436 | |
3437 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3438 JVMWrapper("JVM_GetClassContext"); | |
3439 ResourceMark rm(THREAD); | |
3440 JvmtiVMObjectAllocEventCollector oam; | |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3441 vframeStream vfst(thread); |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3442 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3443 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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|
3444 // This must only be called from SecurityManager.getClassContext |
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|
3445 Method* m = vfst.method(); |
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|
3446 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3447 m->name() == vmSymbols::getClassContext_name() && |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3448 m->signature() == vmSymbols::void_class_array_signature())) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3449 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3450 } |
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|
3451 } |
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|
3452 |
16885e702c88
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|
3453 // Collect method holders |
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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diff
changeset
|
3454 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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changeset
|
3455 for (; !vfst.at_end(); vfst.security_next()) { |
16885e702c88
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|
3456 Method* m = vfst.method(); |
0 | 3457 // Native frames are not returned |
8866
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diff
changeset
|
3458 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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changeset
|
3459 Klass* holder = m->method_holder(); |
0 | 3460 assert(holder->is_klass(), "just checking"); |
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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diff
changeset
|
3461 klass_array->append(holder); |
0 | 3462 } |
3463 } | |
3464 | |
3465 // Create result array of type [Ljava/lang/Class; | |
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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changeset
|
3466 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3467 // Fill in mirrors corresponding to method holders |
11001
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diff
changeset
|
3468 for (int i = 0; i < klass_array->length(); i++) { |
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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changeset
|
3469 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3470 } |
3471 | |
3472 return (jobjectArray) JNIHandles::make_local(env, result); | |
3473 JVM_END | |
3474 | |
3475 | |
3476 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3477 JVMWrapper("JVM_ClassDepth"); | |
3478 ResourceMark rm(THREAD); | |
3479 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3480 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3481 | |
3482 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
3483 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3484 if (class_name_sym == NULL) { |
0 | 3485 return -1; |
3486 } | |
3487 | |
3488 int depth = 0; | |
3489 | |
3490 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3491 if (!vfst.method()->is_native()) { | |
6940
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coleenp
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6831
diff
changeset
|
3492 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3493 assert(holder->is_klass(), "just checking"); |
6940
18fb7da42534
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coleenp
parents:
6831
diff
changeset
|
3494 if (holder->name() == class_name_sym) { |
0 | 3495 return depth; |
3496 } | |
3497 depth++; | |
3498 } | |
3499 } | |
3500 return -1; | |
3501 JVM_END | |
3502 | |
3503 | |
3504 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3505 JVMWrapper("JVM_ClassLoaderDepth"); | |
3506 ResourceMark rm(THREAD); | |
3507 int depth = 0; | |
3508 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3509 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3510 bool trusted = is_trusted_frame(thread, &vfst); | |
3511 if (trusted) return -1; | |
3512 | |
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3513 Method* m = vfst.method(); |
0 | 3514 if (!m->is_native()) { |
6940
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coleenp
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6831
diff
changeset
|
3515 InstanceKlass* holder = m->method_holder(); |
0 | 3516 assert(holder->is_klass(), "just checking"); |
6940
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coleenp
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6831
diff
changeset
|
3517 oop loader = holder->class_loader(); |
0 | 3518 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3519 return depth; | |
3520 } | |
3521 depth++; | |
3522 } | |
3523 } | |
3524 return -1; | |
3525 JVM_END | |
3526 | |
3527 | |
3528 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3529 | |
3530 | |
3531 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3532 JVMWrapper("JVM_GetSystemPackage"); | |
3533 ResourceMark rm(THREAD); | |
3534 JvmtiVMObjectAllocEventCollector oam; | |
3535 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3536 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3537 return (jstring) JNIHandles::make_local(result); | |
3538 JVM_END | |
3539 | |
3540 | |
3541 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3542 JVMWrapper("JVM_GetSystemPackages"); | |
3543 JvmtiVMObjectAllocEventCollector oam; | |
3544 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3545 return (jobjectArray) JNIHandles::make_local(result); | |
3546 JVM_END | |
3547 | |
3548 | |
3549 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3550 | |
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|
3551 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3552 if (current_class == NULL) { |
3553 return true; | |
3554 } | |
3555 if ((current_class == field_class) || access.is_public()) { | |
3556 return true; | |
3557 } | |
3558 | |
3559 if (access.is_protected()) { | |
3560 // See if current_class is a subclass of field_class | |
6983 | 3561 if (current_class->is_subclass_of(field_class)) { |
0 | 3562 return true; |
3563 } | |
3564 } | |
3565 | |
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3566 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3567 } |
3568 | |
3569 | |
3570 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3571 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3572 JVMWrapper("JVM_AllocateNewObject"); | |
3573 JvmtiVMObjectAllocEventCollector oam; | |
3574 // Receiver is not used | |
3575 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3576 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3577 | |
3578 // Cannot instantiate primitive types | |
3579 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3580 ResourceMark rm(THREAD); | |
3581 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3582 } | |
3583 | |
3584 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3585 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3586 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3587 ResourceMark rm(THREAD); |
3588 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3589 } | |
3590 | |
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changeset
|
3591 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
da91efe96a93
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diff
changeset
|
3592 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3593 |
3594 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3595 | |
3596 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3597 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3598 | |
3599 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3600 curr_klass->initialize(CHECK_NULL); | |
3601 | |
3602 methodHandle m (THREAD, | |
3603 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3604 vmSymbols::void_method_signature())); | |
3605 if (m.is_null()) { | |
3606 ResourceMark rm(THREAD); | |
3607 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3608 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3609 vmSymbols::object_initializer_name(), |
3610 vmSymbols::void_method_signature())); | |
3611 } | |
3612 | |
3613 if (curr_klass == init_klass && !m->is_public()) { | |
3614 // Calling the constructor for class 'curr_klass'. | |
3615 // Only allow calls to a public no-arg constructor. | |
3616 // This path corresponds to creating an Externalizable object. | |
3617 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3618 } | |
3619 | |
3620 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3621 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3622 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3623 } | |
3624 | |
3625 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3626 // Call constructor m. This might call a constructor higher up in the hierachy | |
3627 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3628 | |
3629 return JNIHandles::make_local(obj()); | |
3630 JVM_END | |
3631 | |
3632 | |
3633 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3634 JVMWrapper("JVM_AllocateNewArray"); | |
3635 JvmtiVMObjectAllocEventCollector oam; | |
3636 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3637 | |
3638 if (java_lang_Class::is_primitive(mirror)) { | |
3639 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3640 } | |
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da91efe96a93
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diff
changeset
|
3641 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3642 oop result; |
3643 | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3644 if (k->oop_is_typeArray()) { |
0 | 3645 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3646 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
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changeset
|
3647 } else if (k->oop_is_objArray()) { |
0 | 3648 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
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diff
changeset
|
3649 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3650 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3651 result = oak->allocate(length, CHECK_NULL); | |
3652 } else { | |
3653 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3654 } | |
3655 return JNIHandles::make_local(env, result); | |
3656 JVM_END | |
3657 | |
3658 | |
3659 // Return the first non-null class loader up the execution stack, or null | |
3660 // if only code from the null class loader is on the stack. | |
3661 | |
3662 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3663 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3664 // UseNewReflection | |
3665 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
|
3666 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3667 if (loader != NULL) { |
3668 return JNIHandles::make_local(env, loader); | |
3669 } | |
3670 } | |
3671 return NULL; | |
3672 JVM_END | |
3673 | |
3674 | |
3675 // Load a class relative to the most recent class on the stack with a non-null | |
3676 // classloader. | |
3677 // This function has been deprecated and should not be considered part of the | |
3678 // specified JVM interface. | |
3679 | |
3680 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3681 jclass currClass, jstring currClassName)) | |
3682 JVMWrapper("JVM_LoadClass0"); | |
3683 // Receiver is not used | |
3684 ResourceMark rm(THREAD); | |
3685 | |
3686 // Class name argument is not guaranteed to be in internal format | |
3687 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3688 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3689 | |
3690 const char* str = java_lang_String::as_utf8_string(string()); | |
3691 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3692 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3693 // It's impossible to create this class; the name cannot fit |
3694 // into the constant pool. | |
3695 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3696 } | |
3697 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3698 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3699 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3700 // Find the most recent class on the stack with a non-null classloader | |
3701 oop loader = NULL; | |
3702 oop protection_domain = NULL; | |
3703 if (curr_klass.is_null()) { | |
3704 for (vframeStream vfst(thread); | |
3705 !vfst.at_end() && loader == NULL; | |
3706 vfst.next()) { | |
3707 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
|
3708 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3709 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3710 protection_domain = holder->protection_domain(); |
0 | 3711 } |
3712 } | |
3713 } else { | |
6725
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changeset
|
3714 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
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changeset
|
3715 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
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changeset
|
3716 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3717 } |
3718 Handle h_loader(THREAD, loader); | |
3719 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3720 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
|
3721 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3722 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
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changeset
|
3723 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3724 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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parents:
579
diff
changeset
|
3725 return result; |
0 | 3726 JVM_END |
3727 | |
3728 | |
3729 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3730 | |
3731 | |
3732 // resolve array handle and check arguments | |
3733 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3734 if (arr == NULL) { | |
3735 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3736 } | |
3737 oop a = JNIHandles::resolve_non_null(arr); | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3738 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3739 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3740 } | |
3741 return arrayOop(a); | |
3742 } | |
3743 | |
3744 | |
3745 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3746 JVMWrapper("JVM_GetArrayLength"); | |
3747 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3748 return a->length(); | |
3749 JVM_END | |
3750 | |
3751 | |
3752 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3753 JVMWrapper("JVM_Array_Get"); | |
3754 JvmtiVMObjectAllocEventCollector oam; | |
3755 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3756 jvalue value; | |
3757 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3758 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3759 return JNIHandles::make_local(env, box); | |
3760 JVM_END | |
3761 | |
3762 | |
3763 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3764 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3765 jvalue value; | |
3766 value.i = 0; // to initialize value before getting used in CHECK | |
3767 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3768 assert(a->is_typeArray(), "just checking"); | |
3769 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3770 BasicType wide_type = (BasicType) wCode; | |
3771 if (type != wide_type) { | |
3772 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3773 } | |
3774 return value; | |
3775 JVM_END | |
3776 | |
3777 | |
3778 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3779 JVMWrapper("JVM_SetArrayElement"); | |
3780 arrayOop a = check_array(env, arr, false, CHECK); | |
3781 oop box = JNIHandles::resolve(val); | |
3782 jvalue value; | |
3783 value.i = 0; // to initialize value before getting used in CHECK | |
3784 BasicType value_type; | |
3785 if (a->is_objArray()) { | |
3786 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3787 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3788 } else { | |
3789 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3790 } | |
3791 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3792 JVM_END | |
3793 | |
3794 | |
3795 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3796 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3797 arrayOop a = check_array(env, arr, true, CHECK); | |
3798 assert(a->is_typeArray(), "just checking"); | |
3799 BasicType value_type = (BasicType) vCode; | |
3800 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3801 JVM_END | |
3802 | |
3803 | |
3804 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3805 JVMWrapper("JVM_NewArray"); | |
3806 JvmtiVMObjectAllocEventCollector oam; | |
3807 oop element_mirror = JNIHandles::resolve(eltClass); | |
3808 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3809 return JNIHandles::make_local(env, result); | |
3810 JVM_END | |
3811 | |
3812 | |
3813 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3814 JVMWrapper("JVM_NewMultiArray"); | |
3815 JvmtiVMObjectAllocEventCollector oam; | |
3816 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3817 oop element_mirror = JNIHandles::resolve(eltClass); | |
3818 assert(dim_array->is_typeArray(), "just checking"); | |
3819 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3820 return JNIHandles::make_local(env, result); | |
3821 JVM_END | |
3822 | |
3823 | |
3824 // Networking library support //////////////////////////////////////////////////////////////////// | |
3825 | |
3826 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3827 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3828 return 0; |
0 | 3829 JVM_END |
3830 | |
3831 | |
3832 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3833 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3834 return os::socket(domain, type, protocol); |
0 | 3835 JVM_END |
3836 | |
3837 | |
3838 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3839 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3840 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3841 return os::socket_close(fd); |
0 | 3842 JVM_END |
3843 | |
3844 | |
3845 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3846 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3847 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3848 return os::socket_shutdown(fd, howto); |
0 | 3849 JVM_END |
3850 | |
3851 | |
3852 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3853 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3854 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3855 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3856 JVM_END |
3857 | |
3858 | |
3859 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3860 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3861 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3862 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3863 JVM_END |
3864 | |
3865 | |
3866 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3867 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3868 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3869 return os::timeout(fd, timeout); |
0 | 3870 JVM_END |
3871 | |
3872 | |
3873 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3874 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3875 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3876 return os::listen(fd, count); |
0 | 3877 JVM_END |
3878 | |
3879 | |
3880 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3881 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3882 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3883 return os::connect(fd, him, (socklen_t)len); |
0 | 3884 JVM_END |
3885 | |
3886 | |
3887 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3888 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3889 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3890 return os::bind(fd, him, (socklen_t)len); |
0 | 3891 JVM_END |
3892 | |
3893 | |
3894 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3895 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3896 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3897 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3898 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3899 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3900 return result; |
0 | 3901 JVM_END |
3902 | |
3903 | |
3904 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3905 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3906 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3907 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3908 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
|
3909 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3910 return result; |
0 | 3911 JVM_END |
3912 | |
3913 | |
3914 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3915 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3916 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3917 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3918 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
|
3919 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3920 return result; |
0 | 3921 JVM_END |
3922 | |
3923 | |
3924 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3925 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3926 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3927 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3928 JVM_END |
3929 | |
3930 | |
3931 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3932 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3933 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3934 return os::socket_available(fd, pbytes); |
0 | 3935 JVM_END |
3936 | |
3937 | |
3938 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3939 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3940 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3941 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3942 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
|
3943 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3944 return result; |
0 | 3945 JVM_END |
3946 | |
3947 | |
3948 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3949 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3950 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3951 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3952 JVM_END |
3953 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3954 |
0 | 3955 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3956 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3957 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3958 JVM_END |
0 | 3959 |
4717
11c26bfcf8c7
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3960 |
0 | 3961 // Library support /////////////////////////////////////////////////////////////////////////// |
3962 | |
3963 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3964 //%note jvm_ct | |
3965 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3966 char ebuf[1024]; | |
3967 void *load_result; | |
3968 { | |
3969 ThreadToNativeFromVM ttnfvm(thread); | |
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3970 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3971 } |
3972 if (load_result == NULL) { | |
3973 char msg[1024]; | |
3974 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3975 // Since 'ebuf' may contain a string encoded using | |
3976 // platform encoding scheme, we need to pass | |
3977 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3978 // as the last argument. See bug 6367357. | |
3979 Handle h_exception = | |
3980 Exceptions::new_exception(thread, | |
3981 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3982 msg, Exceptions::unsafe_to_utf8); | |
3983 | |
3984 THROW_HANDLE_0(h_exception); | |
3985 } | |
3986 return load_result; | |
3987 JVM_END | |
3988 | |
3989 | |
3990 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3991 JVMWrapper("JVM_UnloadLibrary"); | |
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3992 os::dll_unload(handle); |
0 | 3993 JVM_END |
3994 | |
3995 | |
3996 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3997 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
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3998 return os::dll_lookup(handle, name); |
0 | 3999 JVM_END |
4000 | |
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4001 |
0 | 4002 // Floating point support //////////////////////////////////////////////////////////////////// |
4003 | |
4004 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
4005 JVMWrapper("JVM_IsNaN"); | |
4006 return g_isnan(a); | |
4007 JVM_END | |
4008 | |
4009 | |
4010 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
4011 | |
4012 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
4013 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
4014 return Threads::is_supported_jni_version_including_1_1(version); | |
4015 JVM_END | |
4016 | |
4017 | |
4018 // String support /////////////////////////////////////////////////////////////////////////// | |
4019 | |
4020 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
4021 JVMWrapper("JVM_InternString"); | |
4022 JvmtiVMObjectAllocEventCollector oam; | |
4023 if (str == NULL) return NULL; | |
4024 oop string = JNIHandles::resolve_non_null(str); | |
4025 oop result = StringTable::intern(string, CHECK_NULL); | |
4026 return (jstring) JNIHandles::make_local(env, result); | |
4027 JVM_END | |
4028 | |
4029 | |
4030 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
4031 | |
4032 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
4033 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
4034 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
4035 // that only works with java threads. | |
4036 | |
4037 | |
4038 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
4039 VM_Exit::block_if_vm_exited(); | |
4040 JVMWrapper("JVM_RawMonitorCreate"); | |
4041 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
4042 } | |
4043 | |
4044 | |
4045 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
4046 VM_Exit::block_if_vm_exited(); | |
4047 JVMWrapper("JVM_RawMonitorDestroy"); | |
4048 delete ((Mutex*) mon); | |
4049 } | |
4050 | |
4051 | |
4052 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
4053 VM_Exit::block_if_vm_exited(); | |
4054 JVMWrapper("JVM_RawMonitorEnter"); | |
4055 ((Mutex*) mon)->jvm_raw_lock(); | |
4056 return 0; | |
4057 } | |
4058 | |
4059 | |
4060 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
4061 VM_Exit::block_if_vm_exited(); | |
4062 JVMWrapper("JVM_RawMonitorExit"); | |
4063 ((Mutex*) mon)->jvm_raw_unlock(); | |
4064 } | |
4065 | |
4066 | |
4067 // Support for Serialization | |
4068 | |
4069 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
4070 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
4071 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
4072 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
4073 | |
4074 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
4075 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
4076 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
4077 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
4078 | |
4079 | |
4080 void initialize_converter_functions() { | |
4081 if (JDK_Version::is_gte_jdk14x_version()) { | |
4082 // These functions only exist for compatibility with 1.3.1 and earlier | |
4083 return; | |
4084 } | |
4085 | |
4086 // called from universe_post_init() | |
4087 assert( | |
4088 int_bits_to_float_fn == NULL && | |
4089 long_bits_to_double_fn == NULL && | |
4090 float_to_int_bits_fn == NULL && | |
4091 double_to_long_bits_fn == NULL , | |
4092 "initialization done twice" | |
4093 ); | |
4094 // initialize | |
4095 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
4096 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
4097 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
4098 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
4099 // verify | |
4100 assert( | |
4101 int_bits_to_float_fn != NULL && | |
4102 long_bits_to_double_fn != NULL && | |
4103 float_to_int_bits_fn != NULL && | |
4104 double_to_long_bits_fn != NULL , | |
4105 "initialization failed" | |
4106 ); | |
4107 } | |
4108 | |
4109 | |
4110 | |
4111 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4112 | |
18051 | 4113 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
4114 Handle loader, Handle protection_domain, | |
4115 jboolean throwError, TRAPS) { | |
0 | 4116 // Security Note: |
4117 // The Java level wrapper will perform the necessary security check allowing | |
18051 | 4118 // us to pass the NULL as the initiating class loader. The VM is responsible for |
4119 // the checkPackageAccess relative to the initiating class loader via the | |
4120 // protection_domain. The protection_domain is passed as NULL by the java code | |
4121 // if there is no security manager in 3-arg Class.forName(). | |
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4122 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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|
4123 |
0 | 4124 KlassHandle klass_handle(THREAD, klass); |
4125 // Check if we should initialize the class | |
4126 if (init && klass_handle->oop_is_instance()) { | |
4127 klass_handle->initialize(CHECK_NULL); | |
4128 } | |
4129 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4130 } | |
4131 | |
4132 | |
4133 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4134 | |
4135 #ifndef PRODUCT | |
4136 | |
4137 extern "C" { | |
4138 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4139 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4140 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4141 } | |
4142 | |
4143 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4144 JVMWrapper("JVM_AccessBoolVMFlag"); | |
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4145 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4146 JVM_END |
4147 | |
4148 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4149 JVMWrapper("JVM_AccessVMIntFlag"); | |
4150 intx v; | |
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4151 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4152 *value = (jint)v; |
4153 return result; | |
4154 JVM_END | |
4155 | |
4156 | |
4157 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4158 JVMWrapper("JVM_VMBreakPoint"); | |
4159 oop the_obj = JNIHandles::resolve(obj); | |
4160 BREAKPOINT; | |
4161 JVM_END | |
4162 | |
4163 | |
4164 #endif | |
4165 | |
4166 | |
4167 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4168 | |
4169 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4170 JVMWrapper("JVM_InvokeMethod"); | |
4171 Handle method_handle; | |
4172 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4173 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4174 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4175 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4176 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4177 jobject res = JNIHandles::make_local(env, result); | |
4178 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4179 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4180 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4181 if (java_lang_Class::is_primitive(ret_type)) { | |
4182 // Only for primitive type vm allocates memory for java object. | |
4183 // See box() method. | |
4184 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4185 } | |
4186 } | |
4187 return res; | |
4188 } else { | |
4189 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4190 } | |
4191 JVM_END | |
4192 | |
4193 | |
4194 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4195 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4196 oop constructor_mirror = JNIHandles::resolve(c); | |
4197 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4198 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4199 jobject res = JNIHandles::make_local(env, result); | |
4200 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4201 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4202 } | |
4203 return res; | |
4204 JVM_END | |
4205 | |
4206 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4207 | |
4208 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4209 JVMWrapper("JVM_SupportsCX8"); | |
4210 return VM_Version::supports_cx8(); | |
4211 JVM_END | |
4212 | |
4213 | |
4214 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4215 JVMWrapper("JVM_CX8Field"); | |
4216 jlong res; | |
4217 oop o = JNIHandles::resolve(obj); | |
4218 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4219 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4220 | |
4221 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4222 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4223 | |
4224 return res == oldVal; | |
4225 JVM_END | |
4226 | |
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4227 // DTrace /////////////////////////////////////////////////////////////////// |
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4228 |
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4229 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4230 JVMWrapper("JVM_DTraceGetVersion"); |
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4231 return (jint)JVM_TRACING_DTRACE_VERSION; |
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|
4232 JVM_END |
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4233 |
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4234 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4235 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4236 JVM_DTraceProvider* providers)) |
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4237 JVMWrapper("JVM_DTraceActivate"); |
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|
4238 return DTraceJSDT::activate( |
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|
4239 version, module_name, providers_count, providers, CHECK_0); |
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|
4240 JVM_END |
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4241 |
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4242 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4243 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4244 return DTraceJSDT::is_probe_enabled(method); |
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4245 JVM_END |
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4246 |
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4247 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4248 JVMWrapper("JVM_DTraceDispose"); |
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4249 DTraceJSDT::dispose(handle); |
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4250 JVM_END |
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4251 |
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4252 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4253 JVMWrapper("JVM_DTraceIsSupported"); |
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4254 return DTraceJSDT::is_supported(); |
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4255 JVM_END |
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4256 |
0 | 4257 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4258 // jvmti agent threads, and JNI attaching threads are skipped) | |
4259 // See CR 6404306 regarding JNI attaching threads | |
4260 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4261 ResourceMark rm(THREAD); | |
4262 ThreadsListEnumerator tle(THREAD, false, false); | |
4263 JvmtiVMObjectAllocEventCollector oam; | |
4264 | |
4265 int num_threads = tle.num_threads(); | |
1142 | 4266 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4267 objArrayHandle threads_ah(THREAD, r); |
4268 | |
4269 for (int i = 0; i < num_threads; i++) { | |
4270 Handle h = tle.get_threadObj(i); | |
4271 threads_ah->obj_at_put(i, h()); | |
4272 } | |
4273 | |
4274 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4275 JVM_END | |
4276 | |
4277 | |
4278 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4279 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4280 // the corresponding entry in the given threads array | |
4281 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4282 JVMWrapper("JVM_DumpThreads"); | |
4283 JvmtiVMObjectAllocEventCollector oam; | |
4284 | |
4285 // Check if threads is null | |
4286 if (threads == NULL) { | |
4287 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4288 } | |
4289 | |
4290 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4291 objArrayHandle ah(THREAD, a); | |
4292 int num_threads = ah->length(); | |
4293 // check if threads is non-empty array | |
4294 if (num_threads == 0) { | |
4295 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4296 } | |
4297 | |
4298 // check if threads is not an array of objects of Thread class | |
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4299 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4300 if (k != SystemDictionary::Thread_klass()) { |
0 | 4301 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4302 } | |
4303 | |
4304 ResourceMark rm(THREAD); | |
4305 | |
4306 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4307 for (int i = 0; i < num_threads; i++) { | |
4308 oop thread_obj = ah->obj_at(i); | |
4309 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4310 thread_handle_array->append(h); | |
4311 } | |
4312 | |
4313 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4314 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4315 | |
4316 JVM_END | |
4317 | |
4318 // JVM monitoring and management support | |
4319 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4320 return Management::get_jmm_interface(version); | |
4321 JVM_END | |
4322 | |
4323 // com.sun.tools.attach.VirtualMachine agent properties support | |
4324 // | |
4325 // Initialize the agent properties with the properties maintained in the VM | |
4326 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4327 JVMWrapper("JVM_InitAgentProperties"); | |
4328 ResourceMark rm; | |
4329 | |
4330 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4331 | |
4332 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4333 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4334 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4335 return properties; | |
4336 JVM_END | |
4337 | |
4338 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4339 { | |
4340 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4341 JvmtiVMObjectAllocEventCollector oam; | |
4342 | |
4343 if (ofClass == NULL) { | |
4344 return NULL; | |
4345 } | |
4346 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4347 // Special handling for primitive objects | |
4348 if (java_lang_Class::is_primitive(mirror())) { | |
4349 return NULL; | |
4350 } | |
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diff
changeset
|
4351 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4352 if (!k->oop_is_instance()) { |
0 | 4353 return NULL; |
4354 } | |
4355 instanceKlassHandle ik_h(THREAD, k); | |
4356 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4357 if (encl_method_class_idx == 0) { | |
4358 return NULL; | |
4359 } | |
1142 | 4360 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4361 objArrayHandle dest(THREAD, dest_o); |
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|
4362 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4363 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4364 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4365 if (encl_method_method_idx != 0) { | |
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2162
diff
changeset
|
4366 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4367 extract_low_short_from_int( |
4368 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4369 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4370 dest->obj_at_put(1, str()); | |
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diff
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|
4371 sym = ik_h->constants()->symbol_at( |
0 | 4372 extract_high_short_from_int( |
4373 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4374 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4375 dest->obj_at_put(2, str()); | |
4376 } | |
4377 return (jobjectArray) JNIHandles::make_local(dest()); | |
4378 } | |
4379 JVM_END | |
4380 | |
4381 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4382 jint javaThreadState)) | |
4383 { | |
4384 // If new thread states are added in future JDK and VM versions, | |
4385 // this should check if the JDK version is compatible with thread | |
4386 // states supported by the VM. Return NULL if not compatible. | |
4387 // | |
4388 // This function must map the VM java_lang_Thread::ThreadStatus | |
4389 // to the Java thread state that the JDK supports. | |
4390 // | |
4391 | |
4392 typeArrayHandle values_h; | |
4393 switch (javaThreadState) { | |
4394 case JAVA_THREAD_STATE_NEW : { | |
4395 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4396 values_h = typeArrayHandle(THREAD, r); | |
4397 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4398 break; | |
4399 } | |
4400 case JAVA_THREAD_STATE_RUNNABLE : { | |
4401 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4402 values_h = typeArrayHandle(THREAD, r); | |
4403 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4404 break; | |
4405 } | |
4406 case JAVA_THREAD_STATE_BLOCKED : { | |
4407 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4408 values_h = typeArrayHandle(THREAD, r); | |
4409 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4410 break; | |
4411 } | |
4412 case JAVA_THREAD_STATE_WAITING : { | |
4413 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4414 values_h = typeArrayHandle(THREAD, r); | |
4415 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4416 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4417 break; | |
4418 } | |
4419 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4420 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4421 values_h = typeArrayHandle(THREAD, r); | |
4422 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4423 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4424 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4425 break; | |
4426 } | |
4427 case JAVA_THREAD_STATE_TERMINATED : { | |
4428 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4429 values_h = typeArrayHandle(THREAD, r); | |
4430 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4431 break; | |
4432 } | |
4433 default: | |
4434 // Unknown state - probably incompatible JDK version | |
4435 return NULL; | |
4436 } | |
4437 | |
4438 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4439 } | |
4440 JVM_END | |
4441 | |
4442 | |
4443 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4444 jint javaThreadState, | |
4445 jintArray values)) | |
4446 { | |
4447 // If new thread states are added in future JDK and VM versions, | |
4448 // this should check if the JDK version is compatible with thread | |
4449 // states supported by the VM. Return NULL if not compatible. | |
4450 // | |
4451 // This function must map the VM java_lang_Thread::ThreadStatus | |
4452 // to the Java thread state that the JDK supports. | |
4453 // | |
4454 | |
4455 ResourceMark rm; | |
4456 | |
4457 // Check if threads is null | |
4458 if (values == NULL) { | |
4459 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4460 } | |
4461 | |
4462 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4463 typeArrayHandle values_h(THREAD, v); | |
4464 | |
4465 objArrayHandle names_h; | |
4466 switch (javaThreadState) { | |
4467 case JAVA_THREAD_STATE_NEW : { | |
4468 assert(values_h->length() == 1 && | |
4469 values_h->int_at(0) == java_lang_Thread::NEW, | |
4470 "Invalid threadStatus value"); | |
4471 | |
1142 | 4472 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4473 1, /* only 1 substate */ |
4474 CHECK_NULL); | |
4475 names_h = objArrayHandle(THREAD, r); | |
4476 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4477 names_h->obj_at_put(0, name()); | |
4478 break; | |
4479 } | |
4480 case JAVA_THREAD_STATE_RUNNABLE : { | |
4481 assert(values_h->length() == 1 && | |
4482 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4483 "Invalid threadStatus value"); | |
4484 | |
1142 | 4485 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4486 1, /* only 1 substate */ |
4487 CHECK_NULL); | |
4488 names_h = objArrayHandle(THREAD, r); | |
4489 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4490 names_h->obj_at_put(0, name()); | |
4491 break; | |
4492 } | |
4493 case JAVA_THREAD_STATE_BLOCKED : { | |
4494 assert(values_h->length() == 1 && | |
4495 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4496 "Invalid threadStatus value"); | |
4497 | |
1142 | 4498 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4499 1, /* only 1 substate */ |
4500 CHECK_NULL); | |
4501 names_h = objArrayHandle(THREAD, r); | |
4502 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4503 names_h->obj_at_put(0, name()); | |
4504 break; | |
4505 } | |
4506 case JAVA_THREAD_STATE_WAITING : { | |
4507 assert(values_h->length() == 2 && | |
4508 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4509 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4510 "Invalid threadStatus value"); | |
1142 | 4511 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4512 2, /* number of substates */ |
4513 CHECK_NULL); | |
4514 names_h = objArrayHandle(THREAD, r); | |
4515 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4516 CHECK_NULL); | |
4517 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4518 CHECK_NULL); | |
4519 names_h->obj_at_put(0, name0()); | |
4520 names_h->obj_at_put(1, name1()); | |
4521 break; | |
4522 } | |
4523 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4524 assert(values_h->length() == 3 && | |
4525 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4526 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4527 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4528 "Invalid threadStatus value"); | |
1142 | 4529 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4530 3, /* number of substates */ |
4531 CHECK_NULL); | |
4532 names_h = objArrayHandle(THREAD, r); | |
4533 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4534 CHECK_NULL); | |
4535 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4536 CHECK_NULL); | |
4537 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4538 CHECK_NULL); | |
4539 names_h->obj_at_put(0, name0()); | |
4540 names_h->obj_at_put(1, name1()); | |
4541 names_h->obj_at_put(2, name2()); | |
4542 break; | |
4543 } | |
4544 case JAVA_THREAD_STATE_TERMINATED : { | |
4545 assert(values_h->length() == 1 && | |
4546 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4547 "Invalid threadStatus value"); | |
1142 | 4548 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4549 1, /* only 1 substate */ |
4550 CHECK_NULL); | |
4551 names_h = objArrayHandle(THREAD, r); | |
4552 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4553 names_h->obj_at_put(0, name()); | |
4554 break; | |
4555 } | |
4556 default: | |
4557 // Unknown state - probably incompatible JDK version | |
4558 return NULL; | |
4559 } | |
4560 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4561 } | |
4562 JVM_END | |
4563 | |
4564 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4565 { | |
20690
d4caf9c96afd
8035893: JVM_GetVersionInfo fails to zero structure
igerasim
parents:
20677
diff
changeset
|
4566 memset(info, 0, info_size); |
0 | 4567 |
4568 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4569 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4570 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4571 | |
4572 // when we add a new capability in the jvm_version_info struct, we should also | |
4573 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4574 // counter defined in runtimeService.cpp. | |
4575 info->is_attachable = AttachListener::is_attach_supported(); | |
4576 } | |
4577 JVM_END |