Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvm.cpp @ 23404:3ef45d0a6d77
Remove jvmci VM configuration, and backport UseJVMCICompiler flag.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Tue, 24 May 2016 13:51:28 +0200 |
parents | dd9cc155639c |
children | f13e777eb255 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
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27 #include "classfile/classLoaderExt.hpp" |
1972 | 28 #include "classfile/javaAssertions.hpp" |
29 #include "classfile/javaClasses.hpp" | |
30 #include "classfile/symbolTable.hpp" | |
31 #include "classfile/systemDictionary.hpp" | |
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32 #if INCLUDE_CDS |
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33 #include "classfile/sharedClassUtil.hpp" |
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34 #include "classfile/systemDictionaryShared.hpp" |
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35 #endif |
1972 | 36 #include "classfile/vmSymbols.hpp" |
37 #include "gc_interface/collectedHeap.inline.hpp" | |
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38 #include "interpreter/bytecode.hpp" |
1972 | 39 #include "memory/oopFactory.hpp" |
40 #include "memory/universe.inline.hpp" | |
3938 | 41 #include "oops/fieldStreams.hpp" |
1972 | 42 #include "oops/instanceKlass.hpp" |
43 #include "oops/objArrayKlass.hpp" | |
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44 #include "oops/method.hpp" |
1972 | 45 #include "prims/jvm.h" |
46 #include "prims/jvm_misc.hpp" | |
47 #include "prims/jvmtiExport.hpp" | |
48 #include "prims/jvmtiThreadState.hpp" | |
49 #include "prims/nativeLookup.hpp" | |
50 #include "prims/privilegedStack.hpp" | |
51 #include "runtime/arguments.hpp" | |
52 #include "runtime/dtraceJSDT.hpp" | |
53 #include "runtime/handles.inline.hpp" | |
54 #include "runtime/init.hpp" | |
55 #include "runtime/interfaceSupport.hpp" | |
56 #include "runtime/java.hpp" | |
57 #include "runtime/javaCalls.hpp" | |
58 #include "runtime/jfieldIDWorkaround.hpp" | |
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59 #include "runtime/orderAccess.inline.hpp" |
1972 | 60 #include "runtime/os.hpp" |
61 #include "runtime/perfData.hpp" | |
62 #include "runtime/reflection.hpp" | |
63 #include "runtime/vframe.hpp" | |
64 #include "runtime/vm_operations.hpp" | |
65 #include "services/attachListener.hpp" | |
66 #include "services/management.hpp" | |
67 #include "services/threadService.hpp" | |
10405 | 68 #include "trace/tracing.hpp" |
1972 | 69 #include "utilities/copy.hpp" |
70 #include "utilities/defaultStream.hpp" | |
71 #include "utilities/dtrace.hpp" | |
72 #include "utilities/events.hpp" | |
73 #include "utilities/histogram.hpp" | |
74 #include "utilities/top.hpp" | |
75 #include "utilities/utf8.hpp" | |
76 #ifdef TARGET_OS_FAMILY_linux | |
77 # include "jvm_linux.h" | |
78 #endif | |
79 #ifdef TARGET_OS_FAMILY_solaris | |
80 # include "jvm_solaris.h" | |
81 #endif | |
82 #ifdef TARGET_OS_FAMILY_windows | |
83 # include "jvm_windows.h" | |
84 #endif | |
14411 | 85 #ifdef TARGET_OS_FAMILY_aix |
86 # include "jvm_aix.h" | |
87 #endif | |
3960 | 88 #ifdef TARGET_OS_FAMILY_bsd |
89 # include "jvm_bsd.h" | |
90 #endif | |
1972 | 91 |
0 | 92 #include <errno.h> |
93 | |
4006 | 94 #ifndef USDT2 |
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95 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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96 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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97 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 98 #endif /* !USDT2 */ |
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99 |
0 | 100 /* |
101 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
102 such ctors and calls MUST NOT come between an oop declaration/init and its | |
103 usage because if objects are move this may cause various memory stomps, bus | |
104 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
105 failures": | |
106 | |
107 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
108 JVMWrapper("JVM_GetClassDeclaredFields"); | |
109 | |
110 // Object address to be held directly in mirror & not visible to GC | |
111 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
112 | |
113 // If this ctor can hit a safepoint, moving objects around, then | |
114 ComplexConstructor foo; | |
115 | |
116 // Boom! mirror may point to JUNK instead of the intended object | |
117 (some dereference of mirror) | |
118 | |
119 // Here's another call that may block for GC, making mirror stale | |
120 MutexLocker ml(some_lock); | |
121 | |
122 // And here's an initializer that can result in a stale oop | |
123 // all in one step. | |
124 oop o = call_that_can_throw_exception(TRAPS); | |
125 | |
126 | |
127 The solution is to keep the oop declaration BELOW the ctor or function | |
128 call that might cause a GC, do another resolve to reassign the oop, or | |
129 consider use of a Handle instead of an oop so there is immunity from object | |
130 motion. But note that the "QUICK" entries below do not have a handlemark | |
131 and thus can only support use of handles passed in. | |
132 */ | |
133 | |
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134 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 135 ResourceMark rm; |
136 int line_number = -1; | |
137 const char * source_file = NULL; | |
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138 const char * trace = "explicit"; |
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139 InstanceKlass* caller = NULL; |
0 | 140 JavaThread* jthread = JavaThread::current(); |
141 if (jthread->has_last_Java_frame()) { | |
142 vframeStream vfst(jthread); | |
143 | |
144 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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145 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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146 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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147 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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148 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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149 |
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150 Method* last_caller = NULL; |
0 | 151 |
152 while (!vfst.at_end()) { | |
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153 Method* m = vfst.method(); |
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154 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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155 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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156 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 157 break; |
158 } | |
159 last_caller = m; | |
160 vfst.next(); | |
161 } | |
162 // if this is called from Class.forName0 and that is called from Class.forName, | |
163 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
164 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
165 bool found_it = false; | |
166 if (!vfst.at_end() && | |
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167 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 168 vfst.method()->name() == vmSymbols::forName0_name()) { |
169 vfst.next(); | |
170 if (!vfst.at_end() && | |
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171 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 172 vfst.method()->name() == vmSymbols::forName_name()) { |
173 vfst.next(); | |
174 found_it = true; | |
175 } | |
176 } else if (last_caller != NULL && | |
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177 last_caller->method_holder()->name() == |
0 | 178 vmSymbols::java_lang_ClassLoader() && |
179 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
180 last_caller->name() == vmSymbols::loadClass_name())) { | |
181 found_it = true; | |
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182 } else if (!vfst.at_end()) { |
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183 if (vfst.method()->is_native()) { |
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184 // JNI call |
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185 found_it = true; |
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186 } |
0 | 187 } |
188 if (found_it && !vfst.at_end()) { | |
189 // found the caller | |
190 caller = vfst.method()->method_holder(); | |
191 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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192 if (line_number == -1) { |
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193 // show method name if it's a native method |
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194 trace = vfst.method()->name_and_sig_as_C_string(); |
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195 } |
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196 Symbol* s = caller->source_file_name(); |
0 | 197 if (s != NULL) { |
198 source_file = s->as_C_string(); | |
199 } | |
200 } | |
201 } | |
202 if (caller != NULL) { | |
203 if (to_class != caller) { | |
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204 const char * from = caller->external_name(); |
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205 const char * to = to_class->external_name(); |
0 | 206 // print in a single call to reduce interleaving between threads |
207 if (source_file != NULL) { | |
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208 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 209 } else { |
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210 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 211 } |
212 } | |
213 } | |
214 } | |
215 | |
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216 void trace_class_resolution(Klass* to_class) { |
0 | 217 EXCEPTION_MARK; |
218 trace_class_resolution_impl(to_class, THREAD); | |
219 if (HAS_PENDING_EXCEPTION) { | |
220 CLEAR_PENDING_EXCEPTION; | |
221 } | |
222 } | |
223 | |
224 // Wrapper to trace JVM functions | |
225 | |
226 #ifdef ASSERT | |
227 class JVMTraceWrapper : public StackObj { | |
228 public: | |
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229 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
0 | 230 if (TraceJVMCalls) { |
231 va_list ap; | |
232 va_start(ap, format); | |
233 tty->print("JVM "); | |
234 tty->vprint_cr(format, ap); | |
235 va_end(ap); | |
236 } | |
237 } | |
238 }; | |
239 | |
240 Histogram* JVMHistogram; | |
241 volatile jint JVMHistogram_lock = 0; | |
242 | |
243 class JVMHistogramElement : public HistogramElement { | |
244 public: | |
245 JVMHistogramElement(const char* name); | |
246 }; | |
247 | |
248 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
249 _name = elementName; | |
250 uintx count = 0; | |
251 | |
252 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
253 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
254 count +=1; | |
255 if ( (WarnOnStalledSpinLock > 0) | |
256 && (count % WarnOnStalledSpinLock == 0)) { | |
257 warning("JVMHistogram_lock seems to be stalled"); | |
258 } | |
259 } | |
260 } | |
261 | |
262 if(JVMHistogram == NULL) | |
263 JVMHistogram = new Histogram("JVM Call Counts",100); | |
264 | |
265 JVMHistogram->add_element(this); | |
266 Atomic::dec(&JVMHistogram_lock); | |
267 } | |
268 | |
269 #define JVMCountWrapper(arg) \ | |
270 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
271 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
272 | |
273 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
274 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
275 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
276 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
277 #else | |
278 #define JVMWrapper(arg1) | |
279 #define JVMWrapper2(arg1, arg2) | |
280 #define JVMWrapper3(arg1, arg2, arg3) | |
281 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
282 #endif | |
283 | |
284 | |
285 // Interface version ///////////////////////////////////////////////////////////////////// | |
286 | |
287 | |
288 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
289 return JVM_INTERFACE_VERSION; | |
290 JVM_END | |
291 | |
292 | |
293 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
294 | |
295 | |
296 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
297 JVMWrapper("JVM_CurrentTimeMillis"); | |
298 return os::javaTimeMillis(); | |
299 JVM_END | |
300 | |
301 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
302 JVMWrapper("JVM_NanoTime"); | |
303 return os::javaTimeNanos(); | |
304 JVM_END | |
305 | |
306 | |
307 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
308 jobject dst, jint dst_pos, jint length)) | |
309 JVMWrapper("JVM_ArrayCopy"); | |
310 // Check if we have null pointers | |
311 if (src == NULL || dst == NULL) { | |
312 THROW(vmSymbols::java_lang_NullPointerException()); | |
313 } | |
314 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
315 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
316 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
317 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
318 // Do copy | |
6983 | 319 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 320 JVM_END |
321 | |
322 | |
323 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
324 JavaValue r(T_OBJECT); | |
325 // public synchronized Object put(Object key, Object value); | |
326 HandleMark hm(THREAD); | |
327 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
328 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
329 JavaCalls::call_virtual(&r, | |
330 props, | |
1142 | 331 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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332 vmSymbols::put_name(), |
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333 vmSymbols::object_object_object_signature(), |
0 | 334 key_str, |
335 value_str, | |
336 THREAD); | |
337 } | |
338 | |
339 | |
340 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
341 | |
342 | |
343 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
344 JVMWrapper("JVM_InitProperties"); | |
345 ResourceMark rm; | |
346 | |
347 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
348 | |
349 // System property list includes both user set via -D option and | |
350 // jvm system specific properties. | |
351 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
352 PUTPROP(props, p->key(), p->value()); | |
353 } | |
354 | |
355 // Convert the -XX:MaxDirectMemorySize= command line flag | |
356 // to the sun.nio.MaxDirectMemorySize property. | |
357 // Do this after setting user properties to prevent people | |
358 // from setting the value with a -D option, as requested. | |
359 { | |
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360 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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361 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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362 } else { |
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363 char as_chars[256]; |
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364 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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365 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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366 } |
0 | 367 } |
368 | |
369 // JVM monitoring and management support | |
370 // Add the sun.management.compiler property for the compiler's name | |
371 { | |
372 #undef CSIZE | |
373 #if defined(_LP64) || defined(_WIN64) | |
374 #define CSIZE "64-Bit " | |
375 #else | |
376 #define CSIZE | |
377 #endif // 64bit | |
378 | |
379 #ifdef TIERED | |
380 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
381 #else | |
382 #if defined(COMPILER1) | |
383 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
384 #elif defined(COMPILER2) | |
385 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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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 | |
20677
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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"); | |
1980
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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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diff
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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
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
dholmes
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12816
diff
changeset
|
731 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
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12816
diff
changeset
|
732 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
615d83933195
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|
733 // temporarily for existing code to use until a replacement API is defined. |
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
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diff
changeset
|
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()); |
16885e702c88
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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++) { |
16885e702c88
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|
750 Method* m = vfst.method(); |
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|
751 assert(m != NULL, "sanity"); |
16885e702c88
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|
752 switch (n) { |
16885e702c88
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|
753 case 0: |
16885e702c88
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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"); |
16885e702c88
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|
757 } |
16885e702c88
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diff
changeset
|
758 // fall-through |
16885e702c88
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diff
changeset
|
759 case 1: |
16885e702c88
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diff
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|
760 // Frame 0 and 1 must be caller sensitive. |
16885e702c88
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diff
changeset
|
761 if (!m->caller_sensitive()) { |
16885e702c88
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diff
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|
762 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
16885e702c88
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|
763 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
764 break; |
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changeset
|
765 default: |
16885e702c88
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|
766 if (!m->is_ignored_by_security_stack_walk()) { |
16885e702c88
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diff
changeset
|
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()); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
769 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
770 break; |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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parents:
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diff
changeset
|
771 } |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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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
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
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|
797 |
20608
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
changeset
|
798 JVM_ENTRY(jboolean, JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname)) |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
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|
799 JVMWrapper("JVM_KnownToNotExist"); |
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iklam
parents:
20527
diff
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|
800 #if INCLUDE_CDS |
4cb90023bf2b
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iklam
parents:
20527
diff
changeset
|
801 return ClassLoaderExt::known_to_not_exist(env, loader, classname, CHECK_(false)); |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
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|
802 #else |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
changeset
|
803 return false; |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
changeset
|
804 #endif |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
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|
805 JVM_END |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
changeset
|
806 |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
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|
807 |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
808 JVM_ENTRY(jobjectArray, JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader)) |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
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20527
diff
changeset
|
809 JVMWrapper("JVM_GetResourceLookupCacheURLs"); |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
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|
810 #if INCLUDE_CDS |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
811 return ClassLoaderExt::get_lookup_cache_urls(env, loader, CHECK_NULL); |
4cb90023bf2b
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iklam
parents:
20527
diff
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|
812 #else |
4cb90023bf2b
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iklam
parents:
20527
diff
changeset
|
813 return NULL; |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
814 #endif |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
815 JVM_END |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
816 |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
20527
diff
changeset
|
817 |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
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diff
changeset
|
818 JVM_ENTRY(jintArray, JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name)) |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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|
819 JVMWrapper("JVM_GetResourceLookupCache"); |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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|
820 #if INCLUDE_CDS |
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20527
diff
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|
821 return ClassLoaderExt::get_lookup_cache(env, loader, resource_name, CHECK_NULL); |
4cb90023bf2b
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|
822 #else |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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20527
diff
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|
823 return NULL; |
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
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parents:
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diff
changeset
|
824 #endif |
4cb90023bf2b
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|
825 JVM_END |
4cb90023bf2b
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20527
diff
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|
826 |
4cb90023bf2b
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|
827 |
878
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6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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|
828 // Returns a class loaded by the bootstrap class loader; or null |
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mchung
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|
829 // if not found. ClassNotFoundException is not thrown. |
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mchung
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diff
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|
830 // |
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mchung
parents:
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diff
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|
831 // Rationale behind JVM_FindClassFromBootLoader |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
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|
832 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
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|
833 // b> because of (a) java.dll has a direct dependecy on the unexported |
abe076e3636f
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mchung
parents:
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diff
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|
834 // private symbol "_JVM_FindClassFromClassLoader@20". |
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6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
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|
835 // c> the launcher cannot use the private symbol as it dynamically opens |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
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|
836 // the entry point, so if something changes, the launcher will fail |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
837 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
838 // stable exported interface. |
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diff
changeset
|
839 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
abe076e3636f
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mchung
parents:
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diff
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|
840 // signature to change from _JVM_FindClassFromClassLoader@20 to |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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parents:
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diff
changeset
|
841 // JVM_FindClassFromClassLoader and will not be backward compatible |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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parents:
875
diff
changeset
|
842 // with older JDKs. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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875
diff
changeset
|
843 // Thus a public/stable exported entry point is the right solution, |
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mchung
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diff
changeset
|
844 // public here means public in linker semantics, and is exported only |
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mchung
parents:
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diff
changeset
|
845 // to the JDK, and is not intended to be a public API. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
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|
846 |
abe076e3636f
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mchung
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diff
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|
847 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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875
diff
changeset
|
848 const char* name)) |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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875
diff
changeset
|
849 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
850 |
abe076e3636f
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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()); | |
1295 // new ProtectionDomain(null,null); | |
1296 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1297 Handle null_pd(THREAD, null_protection_domain); | |
1298 | |
1299 // new ProtectionDomain[] {pd}; | |
1300 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1301 context->obj_at_put(0, null_pd()); | |
1302 | |
1303 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1304 objArrayHandle h_context(THREAD, context); | |
1305 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1306 return result; | |
1307 } | |
0 | 1308 |
1309 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1310 JVMWrapper("JVM_DoPrivileged"); | |
1311 | |
1312 if (action == NULL) { | |
1313 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1314 } | |
1315 | |
11010 | 1316 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1317 vframeStream vfst(thread); | |
1318 vfst.security_get_caller_frame(1); | |
1319 | |
1320 if (vfst.at_end()) { | |
1321 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1322 } | |
1323 | |
1324 Method* method = vfst.method(); | |
1325 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1326 | |
1327 // Check that action object understands "Object run()" | |
1328 Handle h_context; | |
1329 if (context != NULL) { | |
1330 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1331 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1332 if (!authorized) { | |
1333 // Create an unprivileged access control object and call it's run function | |
1334 // instead. | |
1335 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1336 h_context = Handle(THREAD, noprivs); | |
1337 } | |
1338 } | |
0 | 1339 |
1340 // Check that action object understands "Object run()" | |
1341 Handle object (THREAD, JNIHandles::resolve(action)); | |
1342 | |
1343 // get run() method | |
6983 | 1344 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1345 vmSymbols::run_method_name(), |
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1346 vmSymbols::void_object_signature(), |
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1347 Klass::normal); |
0 | 1348 methodHandle m (THREAD, m_oop); |
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1349 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1350 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1351 } | |
1352 | |
11010 | 1353 // Stack allocated list of privileged stack elements |
1354 PrivilegedElement pi; | |
0 | 1355 if (!vfst.at_end()) { |
11010 | 1356 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1357 thread->set_privileged_stack_top(&pi); |
1358 } | |
1359 | |
1360 | |
1361 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1362 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1363 Handle pending_exception; | |
1364 JavaValue result(T_OBJECT); | |
1365 JavaCallArguments args(object); | |
1366 JavaCalls::call(&result, m, &args, THREAD); | |
1367 | |
1368 // done with action, remove ourselves from the list | |
1369 if (!vfst.at_end()) { | |
1370 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1371 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1372 } | |
1373 | |
1374 if (HAS_PENDING_EXCEPTION) { | |
1375 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1376 CLEAR_PENDING_EXCEPTION; | |
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1377 // JVMTI has already reported the pending exception |
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1378 // JVMTI internal flag reset is needed in order to report PrivilegedActionException |
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1379 if (THREAD->is_Java_thread()) { |
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1380 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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1381 } |
1142 | 1382 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1383 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1384 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1385 JavaCallArguments args(pending_exception); | |
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1386 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1387 vmSymbols::exception_void_signature(), |
0 | 1388 &args); |
1389 } | |
1390 } | |
1391 | |
1392 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1393 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1394 JVM_END | |
1395 | |
1396 | |
1397 // Returns the inherited_access_control_context field of the running thread. | |
1398 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1399 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1400 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1401 return JNIHandles::make_local(env, result); | |
1402 JVM_END | |
1403 | |
1404 class RegisterArrayForGC { | |
1405 private: | |
1406 JavaThread *_thread; | |
1407 public: | |
1408 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1409 _thread = thread; | |
1410 _thread->register_array_for_gc(array); | |
1411 } | |
1412 | |
1413 ~RegisterArrayForGC() { | |
1414 _thread->register_array_for_gc(NULL); | |
1415 } | |
1416 }; | |
1417 | |
1418 | |
1419 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1420 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1421 if (!UsePrivilegedStack) return NULL; | |
1422 | |
1423 ResourceMark rm(THREAD); | |
1424 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1425 JvmtiVMObjectAllocEventCollector oam; | |
1426 | |
1427 // count the protection domains on the execution stack. We collapse | |
1428 // duplicate consecutive protection domains into a single one, as | |
1429 // well as stopping when we hit a privileged frame. | |
1430 | |
1431 // Use vframeStream to iterate through Java frames | |
1432 vframeStream vfst(thread); | |
1433 | |
1434 oop previous_protection_domain = NULL; | |
1435 Handle privileged_context(thread, NULL); | |
1436 bool is_privileged = false; | |
1437 oop protection_domain = NULL; | |
1438 | |
1439 for(; !vfst.at_end(); vfst.next()) { | |
1440 // get method of frame | |
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1441 Method* method = vfst.method(); |
0 | 1442 intptr_t* frame_id = vfst.frame_id(); |
1443 | |
1444 // check the privileged frames to see if we have a match | |
1445 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1446 // this frame is privileged | |
1447 is_privileged = true; | |
1448 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1449 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1450 } else { | |
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1451 protection_domain = method->method_holder()->protection_domain(); |
0 | 1452 } |
1453 | |
1454 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1455 local_array->push(protection_domain); | |
1456 previous_protection_domain = protection_domain; | |
1457 } | |
1458 | |
1459 if (is_privileged) break; | |
1460 } | |
1461 | |
1462 | |
1463 // either all the domains on the stack were system domains, or | |
1464 // we had a privileged system domain | |
1465 if (local_array->is_empty()) { | |
1466 if (is_privileged && privileged_context.is_null()) return NULL; | |
1467 | |
1468 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1469 return JNIHandles::make_local(env, result); | |
1470 } | |
1471 | |
1472 // the resource area must be registered in case of a gc | |
1473 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1474 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1475 local_array->length(), CHECK_NULL); |
1476 objArrayHandle h_context(thread, context); | |
1477 for (int index = 0; index < local_array->length(); index++) { | |
1478 h_context->obj_at_put(index, local_array->at(index)); | |
1479 } | |
1480 | |
1481 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1482 | |
1483 return JNIHandles::make_local(env, result); | |
1484 JVM_END | |
1485 | |
1486 | |
1487 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1488 JVMWrapper("JVM_IsArrayClass"); | |
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1489 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1490 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1491 JVM_END |
1492 | |
1493 | |
1494 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1495 JVMWrapper("JVM_IsPrimitiveClass"); | |
1496 oop mirror = JNIHandles::resolve_non_null(cls); | |
1497 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1498 JVM_END | |
1499 | |
1500 | |
1501 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1502 JVMWrapper("JVM_GetComponentType"); | |
1503 oop mirror = JNIHandles::resolve_non_null(cls); | |
1504 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1505 return (jclass) JNIHandles::make_local(env, result); | |
1506 JVM_END | |
1507 | |
1508 | |
1509 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1510 JVMWrapper("JVM_GetClassModifiers"); | |
1511 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1512 // Primitive type | |
1513 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1514 } | |
1515 | |
6983 | 1516 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1517 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1518 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1519 return k->modifier_flags(); | |
1520 JVM_END | |
1521 | |
1522 | |
1523 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1524 | |
1525 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1526 JvmtiVMObjectAllocEventCollector oam; | |
1527 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1528 // of an InstanceKlass |
0 | 1529 |
1530 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1531 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1532 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1533 return (jobjectArray)JNIHandles::make_local(env, result); |
1534 } | |
1535 | |
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1536 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1537 InnerClassesIterator iter(k); |
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1538 |
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1539 if (iter.length() == 0) { |
0 | 1540 // Neither an inner nor outer class |
1142 | 1541 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1542 return (jobjectArray)JNIHandles::make_local(env, result); |
1543 } | |
1544 | |
1545 // find inner class info | |
1546 constantPoolHandle cp(thread, k->constants()); | |
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1547 int length = iter.length(); |
0 | 1548 |
1549 // Allocate temp. result array | |
1142 | 1550 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1551 objArrayHandle result (THREAD, r); |
1552 int members = 0; | |
1553 | |
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1554 for (; !iter.done(); iter.next()) { |
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1555 int ioff = iter.inner_class_info_index(); |
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1556 int ooff = iter.outer_class_info_index(); |
0 | 1557 |
1558 if (ioff != 0 && ooff != 0) { | |
1559 // Check to see if the name matches the class we're looking for | |
1560 // before attempting to find the class. | |
1561 if (cp->klass_name_at_matches(k, ooff)) { | |
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1562 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1563 if (outer_klass == k()) { |
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1564 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1565 instanceKlassHandle inner_klass (THREAD, ik); |
1566 | |
1567 // Throws an exception if outer klass has not declared k as | |
1568 // an inner klass | |
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1569 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1570 |
1571 result->obj_at_put(members, inner_klass->java_mirror()); | |
1572 members++; | |
1573 } | |
1574 } | |
1575 } | |
1576 } | |
1577 | |
1578 if (members != length) { | |
1579 // Return array of right length | |
1142 | 1580 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1581 for(int i = 0; i < members; i++) { |
1582 res->obj_at_put(i, result->obj_at(i)); | |
1583 } | |
1584 return (jobjectArray)JNIHandles::make_local(env, res); | |
1585 } | |
1586 | |
1587 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1588 JVM_END | |
1589 | |
1590 | |
1591 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1592 { |
0 | 1593 // ofClass is a reference to a java_lang_Class object. |
1594 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1595 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1596 return NULL; |
1597 } | |
1598 | |
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1599 bool inner_is_member = false; |
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1600 Klass* outer_klass |
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1601 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1602 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1603 if (outer_klass == NULL) return NULL; // already a top-level class |
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1604 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1605 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1606 } |
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1607 JVM_END |
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1608 |
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1609 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1610 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1611 bool* inner_is_member, |
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1612 TRAPS) { |
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1613 Thread* thread = THREAD; |
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1614 InnerClassesIterator iter(k); |
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1615 if (iter.length() == 0) { |
0 | 1616 // No inner class info => no declaring class |
1617 return NULL; | |
1618 } | |
1619 | |
1620 constantPoolHandle i_cp(thread, k->constants()); | |
1621 | |
1622 bool found = false; | |
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1623 Klass* ok; |
0 | 1624 instanceKlassHandle outer_klass; |
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1625 *inner_is_member = false; |
0 | 1626 |
1627 // Find inner_klass attribute | |
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1628 for (; !iter.done() && !found; iter.next()) { |
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1629 int ioff = iter.inner_class_info_index(); |
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1630 int ooff = iter.outer_class_info_index(); |
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1631 int noff = iter.inner_name_index(); |
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1632 if (ioff != 0) { |
0 | 1633 // Check to see if the name matches the class we're looking for |
1634 // before attempting to find the class. | |
1635 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1636 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1637 found = (k() == inner_klass); |
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1638 if (found && ooff != 0) { |
0 | 1639 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1640 outer_klass = instanceKlassHandle(thread, ok); | |
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1641 *inner_is_member = true; |
0 | 1642 } |
1643 } | |
1644 } | |
1645 } | |
1646 | |
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1647 if (found && outer_klass.is_null()) { |
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1648 // It may be anonymous; try for that. |
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1649 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1650 if (encl_method_class_idx != 0) { |
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1651 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1652 outer_klass = instanceKlassHandle(thread, ok); |
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1653 *inner_is_member = false; |
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1654 } |
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1655 } |
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1656 |
0 | 1657 // If no inner class attribute found for this class. |
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1658 if (outer_klass.is_null()) return NULL; |
0 | 1659 |
1660 // Throws an exception if outer klass has not declared k as an inner klass | |
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1661 // We need evidence that each klass knows about the other, or else |
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1662 // the system could allow a spoof of an inner class to gain access rights. |
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1663 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1664 return outer_klass(); |
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1665 } |
0 | 1666 |
1667 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1668 assert (cls != NULL, "illegal class"); | |
1669 JVMWrapper("JVM_GetClassSignature"); | |
1670 JvmtiVMObjectAllocEventCollector oam; | |
1671 ResourceMark rm(THREAD); | |
1672 // Return null for arrays and primatives | |
1673 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1674 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1675 if (k->oop_is_instance()) { |
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1676 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1677 if (sym == NULL) return NULL; |
0 | 1678 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1679 return (jstring) JNIHandles::make_local(env, str()); | |
1680 } | |
1681 } | |
1682 return NULL; | |
1683 JVM_END | |
1684 | |
1685 | |
1686 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1687 assert (cls != NULL, "illegal class"); | |
1688 JVMWrapper("JVM_GetClassAnnotations"); | |
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1689 |
0 | 1690 // Return null for arrays and primitives |
1691 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1692 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1693 if (k->oop_is_instance()) { |
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1694 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1695 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1696 } |
1697 } | |
1698 return NULL; | |
1699 JVM_END | |
1700 | |
1701 | |
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1702 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1703 // some of this code was adapted from from jni_FromReflectedField |
1704 | |
1705 oop reflected = JNIHandles::resolve_non_null(field); | |
1706 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1707 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1708 int slot = java_lang_reflect_Field::slot(reflected); |
1709 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1710 | |
1711 KlassHandle kh(THREAD, k); | |
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1712 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1713 |
1714 if (modifiers & JVM_ACC_STATIC) { | |
1715 // for static fields we only look in the current class | |
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1716 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1717 assert(false, "cannot find static field"); |
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1718 return false; |
0 | 1719 } |
1720 } else { | |
1721 // for instance fields we start with the current class and work | |
1722 // our way up through the superclass chain | |
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1723 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1724 assert(false, "cannot find instance field"); |
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1725 return false; |
0 | 1726 } |
1727 } | |
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1728 return true; |
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1729 } |
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1730 |
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1731 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1732 // field is a handle to a java.lang.reflect.Field object |
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1733 assert(field != NULL, "illegal field"); |
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|
1734 JVMWrapper("JVM_GetFieldAnnotations"); |
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1735 |
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1736 fieldDescriptor fd; |
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1737 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1738 if (!gotFd) { |
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1739 return NULL; |
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1740 } |
0 | 1741 |
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1742 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1743 JVM_END |
1744 | |
1745 | |
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1746 static Method* jvm_get_method_common(jobject method) { |
0 | 1747 // some of this code was adapted from from jni_FromReflectedMethod |
1748 | |
1749 oop reflected = JNIHandles::resolve_non_null(method); | |
1750 oop mirror = NULL; | |
1751 int slot = 0; | |
1752 | |
1142 | 1753 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1754 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1755 slot = java_lang_reflect_Constructor::slot(reflected); | |
1756 } else { | |
1142 | 1757 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1758 "wrong type"); |
1759 mirror = java_lang_reflect_Method::clazz(reflected); | |
1760 slot = java_lang_reflect_Method::slot(reflected); | |
1761 } | |
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1762 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1763 |
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1764 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1765 assert(m != NULL, "cannot find method"); |
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1766 return m; // caller has to deal with NULL in product mode |
0 | 1767 } |
1768 | |
1769 | |
1770 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1771 JVMWrapper("JVM_GetMethodAnnotations"); | |
1772 | |
1773 // method is a handle to a java.lang.reflect.Method object | |
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1774 Method* m = jvm_get_method_common(method); |
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1775 if (m == NULL) { |
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1776 return NULL; |
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1777 } |
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1778 |
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1779 return (jbyteArray) JNIHandles::make_local(env, |
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1780 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1781 JVM_END |
1782 | |
1783 | |
1784 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1785 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1786 | |
1787 // method is a handle to a java.lang.reflect.Method object | |
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1788 Method* m = jvm_get_method_common(method); |
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1789 if (m == NULL) { |
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1790 return NULL; |
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1791 } |
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1792 |
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1793 return (jbyteArray) JNIHandles::make_local(env, |
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1794 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1795 JVM_END |
1796 | |
1797 | |
1798 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1799 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1800 | |
1801 // method is a handle to a java.lang.reflect.Method object | |
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1802 Method* m = jvm_get_method_common(method); |
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1803 if (m == NULL) { |
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1804 return NULL; |
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1805 } |
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1806 |
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1807 return (jbyteArray) JNIHandles::make_local(env, |
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1808 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1809 JVM_END |
1810 | |
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1811 /* Type use annotations support (JDK 1.8) */ |
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1812 |
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1813 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1814 assert (cls != NULL, "illegal class"); |
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1815 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1816 ResourceMark rm(THREAD); |
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1817 // Return null for arrays and primitives |
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1818 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1819 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1820 if (k->oop_is_instance()) { |
8031 | 1821 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1822 if (type_annotations != NULL) { |
8031 | 1823 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1824 return (jbyteArray) JNIHandles::make_local(env, a); |
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1825 } |
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1826 } |
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1827 } |
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1828 return NULL; |
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1829 JVM_END |
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1830 |
8818
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1831 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1832 assert (method != NULL, "illegal method"); |
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1833 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1834 |
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1835 // method is a handle to a java.lang.reflect.Method object |
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1836 Method* m = jvm_get_method_common(method); |
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1837 if (m == NULL) { |
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1838 return NULL; |
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1839 } |
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1840 |
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1841 AnnotationArray* type_annotations = m->type_annotations(); |
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1842 if (type_annotations != NULL) { |
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1843 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1844 return (jbyteArray) JNIHandles::make_local(env, a); |
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1845 } |
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1846 |
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1847 return NULL; |
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1848 JVM_END |
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1849 |
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1850 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1851 assert (field != NULL, "illegal field"); |
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1852 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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1853 |
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1854 fieldDescriptor fd; |
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1855 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1856 if (!gotFd) { |
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1857 return NULL; |
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1858 } |
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1859 |
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1860 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1861 JVM_END |
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1862 |
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1863 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1864 if (!cp->is_within_bounds(index)) { |
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1865 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1866 } |
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1867 } |
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1868 |
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1869 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1870 { |
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1871 JVMWrapper("JVM_GetMethodParameters"); |
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1872 // method is a handle to a java.lang.reflect.Method object |
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1873 Method* method_ptr = jvm_get_method_common(method); |
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1874 methodHandle mh (THREAD, method_ptr); |
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1875 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1876 const int num_params = mh->method_parameters_length(); |
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1877 |
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1878 if (0 != num_params) { |
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1879 // make sure all the symbols are properly formatted |
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1880 for (int i = 0; i < num_params; i++) { |
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1881 MethodParametersElement* params = mh->method_parameters_start(); |
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1882 int index = params[i].name_cp_index; |
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1883 bounds_check(mh->constants(), index, CHECK_NULL); |
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1884 |
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1885 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1886 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1887 "Wrong type at constant pool index"); |
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1888 } |
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1889 |
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1890 } |
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1891 |
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1892 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1893 objArrayHandle result (THREAD, result_oop); |
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1894 |
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1895 for (int i = 0; i < num_params; i++) { |
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1896 MethodParametersElement* params = mh->method_parameters_start(); |
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1897 // For a 0 index, give a NULL symbol |
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1898 Symbol* sym = 0 != params[i].name_cp_index ? |
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1899 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1900 int flags = params[i].flags; |
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1901 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1902 flags, CHECK_NULL); |
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1903 result->obj_at_put(i, param); |
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1904 } |
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1905 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1906 } else { |
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1907 return (jobjectArray)NULL; |
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1908 } |
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1909 } |
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1910 JVM_END |
0 | 1911 |
1912 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1913 | |
1914 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1915 { | |
1916 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1917 JvmtiVMObjectAllocEventCollector oam; | |
1918 | |
1919 // Exclude primitive types and array types | |
1920 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1921 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1922 // Return empty array |
1142 | 1923 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1924 return (jobjectArray) JNIHandles::make_local(env, res); |
1925 } | |
1926 | |
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1927 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1928 constantPoolHandle cp(THREAD, k->constants()); |
1929 | |
1930 // Ensure class is linked | |
1931 k->link_class(CHECK_NULL); | |
1932 | |
1933 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1934 bool skip_backtrace = false; | |
1935 | |
1936 // Allocate result | |
1937 int num_fields; | |
1938 | |
1939 if (publicOnly) { | |
1940 num_fields = 0; | |
3938 | 1941 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1942 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1943 } |
1944 } else { | |
3938 | 1945 num_fields = k->java_fields_count(); |
0 | 1946 |
1142 | 1947 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1948 num_fields--; |
1949 skip_backtrace = true; | |
1950 } | |
1951 } | |
1952 | |
1142 | 1953 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1954 objArrayHandle result (THREAD, r); |
1955 | |
1956 int out_idx = 0; | |
1957 fieldDescriptor fd; | |
3938 | 1958 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1959 if (skip_backtrace) { |
1960 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1961 int offset = fs.offset(); |
0 | 1962 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1963 } | |
1964 | |
3938 | 1965 if (!publicOnly || fs.access_flags().is_public()) { |
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1966 fd.reinitialize(k(), fs.index()); |
0 | 1967 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1968 result->obj_at_put(out_idx, field); | |
1969 ++out_idx; | |
1970 } | |
1971 } | |
1972 assert(out_idx == num_fields, "just checking"); | |
1973 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1974 } | |
1975 JVM_END | |
1976 | |
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1977 static bool select_method(methodHandle method, bool want_constructor) { |
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1978 if (want_constructor) { |
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1979 return (method->is_initializer() && !method->is_static()); |
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1980 } else { |
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1981 return (!method->is_initializer() && !method->is_overpass()); |
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1982 } |
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1983 } |
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1984 |
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1985 static jobjectArray get_class_declared_methods_helper( |
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1986 JNIEnv *env, |
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1987 jclass ofClass, jboolean publicOnly, |
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1988 bool want_constructor, |
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1989 Klass* klass, TRAPS) { |
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1990 |
0 | 1991 JvmtiVMObjectAllocEventCollector oam; |
1992 | |
1993 // Exclude primitive types and array types | |
1994 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1995 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1996 // Return empty array |
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1997 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1998 return (jobjectArray) JNIHandles::make_local(env, res); |
1999 } | |
2000 | |
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2001 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 2002 |
2003 // Ensure class is linked | |
2004 k->link_class(CHECK_NULL); | |
2005 | |
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2006 Array<Method*>* methods = k->methods(); |
0 | 2007 int methods_length = methods->length(); |
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2008 |
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2009 // Save original method_idnum in case of redefinition, which can change |
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2010 // the idnum of obsolete methods. The new method will have the same idnum |
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2011 // but if we refresh the methods array, the counts will be wrong. |
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2012 ResourceMark rm(THREAD); |
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2013 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 2014 int num_methods = 0; |
2015 | |
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2016 for (int i = 0; i < methods_length; i++) { |
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2017 methodHandle method(THREAD, methods->at(i)); |
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2018 if (select_method(method, want_constructor)) { |
0 | 2019 if (!publicOnly || method->is_public()) { |
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2020 idnums->push(method->method_idnum()); |
0 | 2021 ++num_methods; |
2022 } | |
2023 } | |
2024 } | |
2025 | |
2026 // Allocate result | |
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2027 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 2028 objArrayHandle result (THREAD, r); |
2029 | |
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2030 // Now just put the methods that we selected above, but go by their idnum |
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2031 // in case of redefinition. The methods can be redefined at any safepoint, |
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2032 // so above when allocating the oop array and below when creating reflect |
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2033 // objects. |
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2034 for (int i = 0; i < num_methods; i++) { |
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2035 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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2036 if (method.is_null()) { |
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2037 // Method may have been deleted and seems this API can handle null |
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2038 // Otherwise should probably put a method that throws NSME |
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2039 result->obj_at_put(i, NULL); |
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2040 } else { |
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2041 oop m; |
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2042 if (want_constructor) { |
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2043 m = Reflection::new_constructor(method, CHECK_NULL); |
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2044 } else { |
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2045 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 2046 } |
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2047 result->obj_at_put(i, m); |
0 | 2048 } |
2049 } | |
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2050 |
0 | 2051 return (jobjectArray) JNIHandles::make_local(env, result()); |
2052 } | |
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2053 |
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2054 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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2055 { |
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2056 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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2057 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2058 /*want_constructor*/ false, |
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2059 SystemDictionary::reflect_Method_klass(), THREAD); |
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2060 } |
0 | 2061 JVM_END |
2062 | |
2063 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
2064 { | |
2065 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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2066 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2067 /*want_constructor*/ true, |
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2068 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 2069 } |
2070 JVM_END | |
2071 | |
2072 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
2073 { | |
2074 JVMWrapper("JVM_GetClassAccessFlags"); | |
2075 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
2076 // Primitive type | |
2077 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
2078 } | |
2079 | |
6983 | 2080 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2081 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
2082 } | |
2083 JVM_END | |
2084 | |
2085 | |
2086 // Constant pool access ////////////////////////////////////////////////////////// | |
2087 | |
2088 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
2089 { | |
2090 JVMWrapper("JVM_GetClassConstantPool"); | |
2091 JvmtiVMObjectAllocEventCollector oam; | |
2092 | |
2093 // Return null for primitives and arrays | |
2094 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2095 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 2096 if (k->oop_is_instance()) { |
0 | 2097 instanceKlassHandle k_h(THREAD, k); |
2098 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2099 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 2100 return JNIHandles::make_local(jcp()); |
2101 } | |
2102 } | |
2103 return NULL; | |
2104 } | |
2105 JVM_END | |
2106 | |
2107 | |
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2108 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 2109 { |
2110 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2111 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2112 return cp->length(); |
2113 } | |
2114 JVM_END | |
2115 | |
2116 | |
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2117 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2118 { |
2119 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2120 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2121 bounds_check(cp, index, CHECK_NULL); |
2122 constantTag tag = cp->tag_at(index); | |
2123 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2124 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2125 } | |
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2126 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2127 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2128 } |
2129 JVM_END | |
2130 | |
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2131 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2132 { |
2133 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2134 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2135 bounds_check(cp, index, CHECK_NULL); |
2136 constantTag tag = cp->tag_at(index); | |
2137 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2138 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2139 } | |
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2140 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2141 if (k == NULL) return NULL; |
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2142 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2143 } |
2144 JVM_END | |
2145 | |
2146 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2147 constantTag tag = cp->tag_at(index); | |
2148 if (!tag.is_method() && !tag.is_interface_method()) { | |
2149 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2150 } | |
2151 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2152 Klass* k_o; |
0 | 2153 if (force_resolution) { |
2154 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2155 } else { | |
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2156 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2157 if (k_o == NULL) return NULL; |
2158 } | |
2159 instanceKlassHandle k(THREAD, k_o); | |
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2160 Symbol* name = cp->uncached_name_ref_at(index); |
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2161 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2162 methodHandle m (THREAD, k->find_method(name, sig)); |
2163 if (m.is_null()) { | |
2164 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2165 } | |
2166 oop method; | |
2167 if (!m->is_initializer() || m->is_static()) { | |
2168 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2169 } else { | |
2170 method = Reflection::new_constructor(m, CHECK_NULL); | |
2171 } | |
2172 return JNIHandles::make_local(method); | |
2173 } | |
2174 | |
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2175 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2176 { |
2177 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2178 JvmtiVMObjectAllocEventCollector oam; | |
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2179 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2180 bounds_check(cp, index, CHECK_NULL); |
2181 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2182 return res; | |
2183 } | |
2184 JVM_END | |
2185 | |
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2186 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2187 { |
2188 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2189 JvmtiVMObjectAllocEventCollector oam; | |
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2190 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2191 bounds_check(cp, index, CHECK_NULL); |
2192 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2193 return res; | |
2194 } | |
2195 JVM_END | |
2196 | |
2197 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2198 constantTag tag = cp->tag_at(index); | |
2199 if (!tag.is_field()) { | |
2200 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2201 } | |
2202 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2203 Klass* k_o; |
0 | 2204 if (force_resolution) { |
2205 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2206 } else { | |
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2207 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2208 if (k_o == NULL) return NULL; |
2209 } | |
2210 instanceKlassHandle k(THREAD, k_o); | |
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2211 Symbol* name = cp->uncached_name_ref_at(index); |
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2212 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2213 fieldDescriptor fd; |
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2214 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2215 if (target_klass == NULL) { |
2216 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2217 } | |
2218 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2219 return JNIHandles::make_local(field); | |
2220 } | |
2221 | |
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2222 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2223 { |
2224 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2225 JvmtiVMObjectAllocEventCollector oam; | |
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2226 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2227 bounds_check(cp, index, CHECK_NULL); |
2228 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2229 return res; | |
2230 } | |
2231 JVM_END | |
2232 | |
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2233 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2234 { |
2235 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2236 JvmtiVMObjectAllocEventCollector oam; | |
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2237 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2238 bounds_check(cp, index, CHECK_NULL); |
2239 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2240 return res; | |
2241 } | |
2242 JVM_END | |
2243 | |
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2244 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2245 { |
2246 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2247 JvmtiVMObjectAllocEventCollector oam; | |
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2248 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2249 bounds_check(cp, index, CHECK_NULL); |
2250 constantTag tag = cp->tag_at(index); | |
2251 if (!tag.is_field_or_method()) { | |
2252 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2253 } | |
2254 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2255 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2256 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2257 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2258 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2259 objArrayHandle dest(THREAD, dest_o); |
2260 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2261 dest->obj_at_put(0, str()); | |
2262 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2263 dest->obj_at_put(1, str()); | |
2264 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2265 dest->obj_at_put(2, str()); | |
2266 return (jobjectArray) JNIHandles::make_local(dest()); | |
2267 } | |
2268 JVM_END | |
2269 | |
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2270 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2271 { |
2272 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2273 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2274 bounds_check(cp, index, CHECK_0); |
2275 constantTag tag = cp->tag_at(index); | |
2276 if (!tag.is_int()) { | |
2277 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2278 } | |
2279 return cp->int_at(index); | |
2280 } | |
2281 JVM_END | |
2282 | |
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2283 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2284 { |
2285 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2286 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2287 bounds_check(cp, index, CHECK_(0L)); |
2288 constantTag tag = cp->tag_at(index); | |
2289 if (!tag.is_long()) { | |
2290 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2291 } | |
2292 return cp->long_at(index); | |
2293 } | |
2294 JVM_END | |
2295 | |
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2296 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2297 { |
2298 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2299 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2300 bounds_check(cp, index, CHECK_(0.0f)); |
2301 constantTag tag = cp->tag_at(index); | |
2302 if (!tag.is_float()) { | |
2303 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2304 } | |
2305 return cp->float_at(index); | |
2306 } | |
2307 JVM_END | |
2308 | |
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2309 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2310 { |
2311 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2312 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2313 bounds_check(cp, index, CHECK_(0.0)); |
2314 constantTag tag = cp->tag_at(index); | |
2315 if (!tag.is_double()) { | |
2316 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2317 } | |
2318 return cp->double_at(index); | |
2319 } | |
2320 JVM_END | |
2321 | |
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2322 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2323 { |
2324 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2325 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2326 bounds_check(cp, index, CHECK_NULL); |
2327 constantTag tag = cp->tag_at(index); | |
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2328 if (!tag.is_string()) { |
0 | 2329 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2330 } | |
2331 oop str = cp->string_at(index, CHECK_NULL); | |
2332 return (jstring) JNIHandles::make_local(str); | |
2333 } | |
2334 JVM_END | |
2335 | |
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2336 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2337 { |
2338 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2339 JvmtiVMObjectAllocEventCollector oam; | |
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2340 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2341 bounds_check(cp, index, CHECK_NULL); |
2342 constantTag tag = cp->tag_at(index); | |
2343 if (!tag.is_symbol()) { | |
2344 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2345 } | |
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2346 Symbol* sym = cp->symbol_at(index); |
0 | 2347 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2348 return (jstring) JNIHandles::make_local(str()); | |
2349 } | |
2350 JVM_END | |
2351 | |
2352 | |
2353 // Assertion support. ////////////////////////////////////////////////////////// | |
2354 | |
2355 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2356 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2357 assert(cls != NULL, "bad class"); | |
2358 | |
2359 oop r = JNIHandles::resolve(cls); | |
2360 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2361 if (java_lang_Class::is_primitive(r)) return false; | |
2362 | |
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2363 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2364 assert(k->oop_is_instance(), "must be an instance klass"); |
2365 if (! k->oop_is_instance()) return false; | |
0 | 2366 |
2367 ResourceMark rm(THREAD); | |
6983 | 2368 const char* name = k->name()->as_C_string(); |
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2369 bool system_class = k->class_loader() == NULL JVMCI_ONLY(|| SystemDictionary::jvmci_loader() == k->class_loader()); |
0 | 2370 return JavaAssertions::enabled(name, system_class); |
2371 | |
2372 JVM_END | |
2373 | |
2374 | |
2375 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2376 // command-line assertion arguments (i.e., -ea, -da). | |
2377 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2378 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2379 JvmtiVMObjectAllocEventCollector oam; | |
2380 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2381 return JNIHandles::make_local(env, asd); | |
2382 JVM_END | |
2383 | |
2384 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2385 | |
2386 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2387 | |
2388 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2389 // All functions from this section should call the jvmtiThreadSate function: | |
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2390 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2391 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2392 // was invoked in the middle of the class redefinition. |
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2393 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2394 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2395 | |
2396 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2397 JVMWrapper("JVM_GetClassNameUTF"); | |
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2398 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2399 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2400 return k->name()->as_utf8(); |
0 | 2401 JVM_END |
2402 | |
2403 | |
2404 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2405 JVMWrapper("JVM_GetClassCPTypes"); | |
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2406 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2407 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2408 // types will have length zero if this is not an InstanceKlass |
0 | 2409 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2410 if (k->oop_is_instance()) { |
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2411 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2412 for (int index = cp->length() - 1; index >= 0; index--) { |
2413 constantTag tag = cp->tag_at(index); | |
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2414 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2415 } |
2416 } | |
2417 JVM_END | |
2418 | |
2419 | |
2420 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2421 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2422 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2423 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2424 if (!k->oop_is_instance()) |
0 | 2425 return 0; |
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2426 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2427 JVM_END |
2428 | |
2429 | |
2430 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2431 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2432 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2433 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2434 if (!k->oop_is_instance()) |
0 | 2435 return 0; |
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2436 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2437 JVM_END |
2438 | |
2439 | |
2440 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2441 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2442 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2443 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2444 if (!k->oop_is_instance()) |
0 | 2445 return 0; |
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2446 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2447 JVM_END |
2448 | |
2449 | |
2450 // The following methods, used for the verifier, are never called with | |
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2451 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2452 // Typically, these methods are called in a loop with bounds determined |
2453 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2454 // zero for arrays. | |
2455 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2456 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2457 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2458 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2459 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2460 int length = method->checked_exceptions_length(); |
0 | 2461 if (length > 0) { |
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2462 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2463 for (int i = 0; i < length; i++) { |
2464 exceptions[i] = table[i].class_cp_index; | |
2465 } | |
2466 } | |
2467 JVM_END | |
2468 | |
2469 | |
2470 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2471 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2472 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2473 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2474 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2475 return method->checked_exceptions_length(); |
0 | 2476 JVM_END |
2477 | |
2478 | |
2479 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2480 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2481 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2482 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2483 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2484 memcpy(code, method->code_base(), method->code_size()); |
0 | 2485 JVM_END |
2486 | |
2487 | |
2488 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2489 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2490 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2491 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2492 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2493 return method->code_size(); |
0 | 2494 JVM_END |
2495 | |
2496 | |
2497 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2498 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2499 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2500 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2501 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2502 ExceptionTable extable(method); |
6213
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2503 entry->start_pc = extable.start_pc(entry_index); |
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2504 entry->end_pc = extable.end_pc(entry_index); |
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2505 entry->handler_pc = extable.handler_pc(entry_index); |
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2506 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2507 JVM_END |
2508 | |
2509 | |
2510 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2511 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2512 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2513 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2514 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2515 return method->exception_table_length(); |
0 | 2516 JVM_END |
2517 | |
2518 | |
2519 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2520 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2521 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2522 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2523 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2524 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2525 JVM_END |
2526 | |
2527 | |
2528 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2529 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2530 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2531 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2532 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2533 JVM_END |
2534 | |
2535 | |
2536 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2537 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2538 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2539 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2540 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2541 return method->max_locals(); |
0 | 2542 JVM_END |
2543 | |
2544 | |
2545 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2546 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2547 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2548 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2549 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2550 return method->size_of_parameters(); |
0 | 2551 JVM_END |
2552 | |
2553 | |
2554 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2555 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2556 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2557 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2558 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2559 return method->verifier_max_stack(); |
0 | 2560 JVM_END |
2561 | |
2562 | |
2563 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2564 JVMWrapper("JVM_IsConstructorIx"); | |
2565 ResourceMark rm(THREAD); | |
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2566 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2567 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2568 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2569 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2570 JVM_END |
2571 | |
2572 | |
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2573 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2574 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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|
2575 ResourceMark rm(THREAD); |
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2576 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2577 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2578 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2579 return method->is_overpass(); |
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|
2580 JVM_END |
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2581 |
0 | 2582 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2583 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2584 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2585 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2586 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2587 return method->name()->as_utf8(); |
0 | 2588 JVM_END |
2589 | |
2590 | |
2591 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2592 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2593 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2594 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2595 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2596 return method->signature()->as_utf8(); |
0 | 2597 JVM_END |
2598 | |
2599 /** | |
2600 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2601 * read entries in the constant pool. Since the old verifier always | |
2602 * works on a copy of the code, it will not see any rewriting that | |
2603 * may possibly occur in the middle of verification. So it is important | |
2604 * that nothing it calls tries to use the cpCache instead of the raw | |
2605 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2606 */ | |
2607 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2608 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2609 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2610 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2611 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2612 switch (cp->tag_at(cp_index).value()) { |
2613 case JVM_CONSTANT_Fieldref: | |
2614 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2615 default: | |
2616 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2617 } | |
2618 ShouldNotReachHere(); | |
2619 return NULL; | |
2620 JVM_END | |
2621 | |
2622 | |
2623 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2624 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2625 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2626 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2627 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2628 switch (cp->tag_at(cp_index).value()) { |
2629 case JVM_CONSTANT_InterfaceMethodref: | |
2630 case JVM_CONSTANT_Methodref: | |
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2631 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2632 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2633 default: | |
2634 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2635 } | |
2636 ShouldNotReachHere(); | |
2637 return NULL; | |
2638 JVM_END | |
2639 | |
2640 | |
2641 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2642 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2643 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2644 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2645 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2646 switch (cp->tag_at(cp_index).value()) { |
2647 case JVM_CONSTANT_InterfaceMethodref: | |
2648 case JVM_CONSTANT_Methodref: | |
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2649 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2650 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2651 default: | |
2652 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2653 } | |
2654 ShouldNotReachHere(); | |
2655 return NULL; | |
2656 JVM_END | |
2657 | |
2658 | |
2659 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2660 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2661 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2662 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2663 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2664 switch (cp->tag_at(cp_index).value()) { |
2665 case JVM_CONSTANT_Fieldref: | |
2666 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2667 default: | |
2668 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2669 } | |
2670 ShouldNotReachHere(); | |
2671 return NULL; | |
2672 JVM_END | |
2673 | |
2674 | |
2675 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2676 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2677 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2678 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2679 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2680 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2681 return classname->as_utf8(); |
2682 JVM_END | |
2683 | |
2684 | |
2685 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2686 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2687 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2688 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2689 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2690 switch (cp->tag_at(cp_index).value()) { |
2691 case JVM_CONSTANT_Fieldref: { | |
2692 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2693 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2694 return classname->as_utf8(); |
2695 } | |
2696 default: | |
2697 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2698 } | |
2699 ShouldNotReachHere(); | |
2700 return NULL; | |
2701 JVM_END | |
2702 | |
2703 | |
2704 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2705 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2706 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2707 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2708 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2709 switch (cp->tag_at(cp_index).value()) { |
2710 case JVM_CONSTANT_Methodref: | |
2711 case JVM_CONSTANT_InterfaceMethodref: { | |
2712 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2713 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2714 return classname->as_utf8(); |
2715 } | |
2716 default: | |
2717 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2718 } | |
2719 ShouldNotReachHere(); | |
2720 return NULL; | |
2721 JVM_END | |
2722 | |
2723 | |
3938 | 2724 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2725 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2726 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2727 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2728 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2729 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2730 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2731 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2732 switch (cp->tag_at(cp_index).value()) { |
2733 case JVM_CONSTANT_Fieldref: { | |
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2734 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2735 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2736 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2737 if (fs.name() == name && fs.signature() == signature) { | |
2738 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2739 } |
2740 } | |
2741 return -1; | |
2742 } | |
2743 default: | |
2744 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2745 } | |
2746 ShouldNotReachHere(); | |
2747 return 0; | |
2748 JVM_END | |
2749 | |
2750 | |
2751 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2752 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2753 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2754 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2755 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2756 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2757 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2758 switch (cp->tag_at(cp_index).value()) { |
2759 case JVM_CONSTANT_Methodref: | |
2760 case JVM_CONSTANT_InterfaceMethodref: { | |
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2761 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2762 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2763 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2764 int methods_count = methods->length(); |
2765 for (int i = 0; i < methods_count; i++) { | |
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2766 Method* method = methods->at(i); |
0 | 2767 if (method->name() == name && method->signature() == signature) { |
2768 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2769 } | |
2770 } | |
2771 return -1; | |
2772 } | |
2773 default: | |
2774 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2775 } | |
2776 ShouldNotReachHere(); | |
2777 return 0; | |
2778 JVM_END | |
2779 | |
2780 | |
2781 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2782 | |
2783 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2784 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2785 JVM_END | |
2786 | |
2787 | |
2788 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2789 JVMWrapper("JVM_IsSameClassPackage"); | |
2790 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2791 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2792 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2793 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2794 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2795 JVM_END | |
2796 | |
2797 | |
2798 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2799 | |
2800 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2801 JVMWrapper2("JVM_Open (%s)", fname); | |
2802 | |
2803 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2804 int result = os::open(fname, flags, mode); |
0 | 2805 if (result >= 0) { |
2806 return result; | |
2807 } else { | |
2808 switch(errno) { | |
2809 case EEXIST: | |
2810 return JVM_EEXIST; | |
2811 default: | |
2812 return -1; | |
2813 } | |
2814 } | |
2815 JVM_END | |
2816 | |
2817 | |
2818 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2819 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2820 //%note jvm_r6 | |
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828eafbd85cc
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ikrylov
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diff
changeset
|
2821 return os::close(fd); |
0 | 2822 JVM_END |
2823 | |
2824 | |
2825 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2826 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2827 | |
2828 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2829 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2830 JVM_END |
2831 | |
2832 | |
2833 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2834 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2835 | |
2836 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
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|
2837 return (jint)os::write(fd, buf, nbytes); |
0 | 2838 JVM_END |
2839 | |
2840 | |
2841 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2842 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2843 //%note jvm_r6 | |
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6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2844 return os::available(fd, pbytes); |
0 | 2845 JVM_END |
2846 | |
2847 | |
2848 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
17937
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diff
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|
2849 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
0 | 2850 //%note jvm_r6 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2851 return os::lseek(fd, offset, whence); |
0 | 2852 JVM_END |
2853 | |
2854 | |
2855 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
17937
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diff
changeset
|
2856 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2857 return os::ftruncate(fd, length); |
0 | 2858 JVM_END |
2859 | |
2860 | |
2861 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2862 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2863 //%note jvm_r6 | |
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ikrylov
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changeset
|
2864 return os::fsync(fd); |
0 | 2865 JVM_END |
2866 | |
2867 | |
2868 // Printing support ////////////////////////////////////////////////// | |
2869 extern "C" { | |
2870 | |
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changeset
|
2871 ATTRIBUTE_PRINTF(3, 0) |
0 | 2872 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
2873 // see bug 4399518, 4417214 | |
2874 if ((intptr_t)count <= 0) return -1; | |
2875 return vsnprintf(str, count, fmt, args); | |
2876 } | |
2877 | |
17937
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|
2878 ATTRIBUTE_PRINTF(3, 0) |
0 | 2879 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
2880 va_list args; | |
2881 int len; | |
2882 va_start(args, fmt); | |
2883 len = jio_vsnprintf(str, count, fmt, args); | |
2884 va_end(args); | |
2885 return len; | |
2886 } | |
2887 | |
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|
2888 ATTRIBUTE_PRINTF(2,3) |
0 | 2889 int jio_fprintf(FILE* f, const char *fmt, ...) { |
2890 int len; | |
2891 va_list args; | |
2892 va_start(args, fmt); | |
2893 len = jio_vfprintf(f, fmt, args); | |
2894 va_end(args); | |
2895 return len; | |
2896 } | |
2897 | |
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|
2898 ATTRIBUTE_PRINTF(2, 0) |
0 | 2899 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
2900 if (Arguments::vfprintf_hook() != NULL) { | |
2901 return Arguments::vfprintf_hook()(f, fmt, args); | |
2902 } else { | |
2903 return vfprintf(f, fmt, args); | |
2904 } | |
2905 } | |
2906 | |
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|
2907 ATTRIBUTE_PRINTF(1, 2) |
2191 | 2908 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2909 int len; |
2910 va_list args; | |
2911 va_start(args, fmt); | |
2912 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2913 va_end(args); | |
2914 return len; | |
2915 } | |
2916 | |
2917 | |
2918 // HotSpot specific jio method | |
2919 void jio_print(const char* s) { | |
2920 // Try to make this function as atomic as possible. | |
2921 if (Arguments::vfprintf_hook() != NULL) { | |
2922 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2923 } else { | |
513
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
2924 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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|
2925 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2926 } |
2927 } | |
2928 | |
2929 } // Extern C | |
2930 | |
2931 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2932 | |
2933 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2934 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2935 // OSThread objects. The exception to this rule is when the target object is the thread | |
2936 // doing the operation, in which case we know that the thread won't exit until the | |
2937 // operation is done (all exits being voluntary). There are a few cases where it is | |
2938 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2939 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2940 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2941 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2942 // implementation is local to this file, we always lock Threads_lock for that one. | |
2943 | |
2944 static void thread_entry(JavaThread* thread, TRAPS) { | |
2945 HandleMark hm(THREAD); | |
2946 Handle obj(THREAD, thread->threadObj()); | |
2947 JavaValue result(T_VOID); | |
2948 JavaCalls::call_virtual(&result, | |
2949 obj, | |
1142 | 2950 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
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|
2951 vmSymbols::run_method_name(), |
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|
2952 vmSymbols::void_method_signature(), |
0 | 2953 THREAD); |
2954 } | |
2955 | |
2956 | |
2957 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2958 JVMWrapper("JVM_StartThread"); | |
2959 JavaThread *native_thread = NULL; | |
2960 | |
2961 // We cannot hold the Threads_lock when we throw an exception, | |
2962 // due to rank ordering issues. Example: we might need to grab the | |
2963 // Heap_lock while we construct the exception. | |
2964 bool throw_illegal_thread_state = false; | |
2965 | |
2966 // We must release the Threads_lock before we can post a jvmti event | |
2967 // in Thread::start. | |
2968 { | |
2969 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2970 // we operate. | |
2971 MutexLocker mu(Threads_lock); | |
2972 | |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2973 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2974 // re-starting an already started thread, so we should usually find |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
changeset
|
2975 // that the JavaThread is null. However for a JNI attached thread |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2976 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2977 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2978 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2979 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2980 throw_illegal_thread_state = true; |
0 | 2981 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2982 // We could also check the stillborn flag to see if this thread was already stopped, but |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2983 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2984 |
0 | 2985 jlong size = |
2986 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2987 // Allocate the C++ Thread structure and create the native thread. The | |
2988 // stack size retrieved from java is signed, but the constructor takes | |
2989 // size_t (an unsigned type), so avoid passing negative values which would | |
2990 // result in really large stacks. | |
2991 size_t sz = size > 0 ? (size_t) size : 0; | |
2992 native_thread = new JavaThread(&thread_entry, sz); | |
2993 | |
2994 // At this point it may be possible that no osthread was created for the | |
2995 // JavaThread due to lack of memory. Check for this situation and throw | |
2996 // an exception if necessary. Eventually we may want to change this so | |
2997 // that we only grab the lock if the thread was created successfully - | |
2998 // then we can also do this check and throw the exception in the | |
2999 // JavaThread constructor. | |
3000 if (native_thread->osthread() != NULL) { | |
3001 // Note: the current thread is not being used within "prepare". | |
3002 native_thread->prepare(jthread); | |
3003 } | |
3004 } | |
3005 } | |
3006 | |
3007 if (throw_illegal_thread_state) { | |
3008 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
3009 } | |
3010 | |
3011 assert(native_thread != NULL, "Starting null thread?"); | |
3012 | |
3013 if (native_thread->osthread() == NULL) { | |
3014 // No one should hold a reference to the 'native_thread'. | |
3015 delete native_thread; | |
3016 if (JvmtiExport::should_post_resource_exhausted()) { | |
3017 JvmtiExport::post_resource_exhausted( | |
3018 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
3019 "unable to create new native thread"); | |
3020 } | |
3021 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
3022 "unable to create new native thread"); | |
3023 } | |
3024 | |
3025 Thread::start(native_thread); | |
3026 | |
3027 JVM_END | |
3028 | |
3029 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
3030 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
3031 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
3032 // same thread as the sender, no safepoint is needed. |
0 | 3033 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
3034 JVMWrapper("JVM_StopThread"); | |
3035 | |
3036 oop java_throwable = JNIHandles::resolve(throwable); | |
3037 if (java_throwable == NULL) { | |
3038 THROW(vmSymbols::java_lang_NullPointerException()); | |
3039 } | |
3040 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3041 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
3042 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
3043 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
3044 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
3045 // First check if thread is alive |
0 | 3046 if (receiver != NULL) { |
3047 // Check if exception is getting thrown at self (use oop equality, since the | |
3048 // target object might exit) | |
3049 if (java_thread == thread->threadObj()) { | |
3050 THROW_OOP(java_throwable); | |
3051 } else { | |
3052 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
3053 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
3054 } | |
3055 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
changeset
|
3056 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3057 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3058 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3059 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3060 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3061 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3062 // stillborn flag for the first case, and if the thread has already |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3063 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3064 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3065 } |
0 | 3066 JVM_END |
3067 | |
3068 | |
3069 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
3070 JVMWrapper("JVM_IsThreadAlive"); | |
3071 | |
3072 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
3073 return java_lang_Thread::is_alive(thread_oop); | |
3074 JVM_END | |
3075 | |
3076 | |
3077 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
3078 JVMWrapper("JVM_SuspendThread"); | |
3079 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3080 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
3081 | |
3082 if (receiver != NULL) { | |
3083 // thread has run and has not exited (still on threads list) | |
3084 | |
3085 { | |
3086 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
3087 if (receiver->is_external_suspend()) { | |
3088 // Don't allow nested external suspend requests. We can't return | |
3089 // an error from this interface so just ignore the problem. | |
3090 return; | |
3091 } | |
3092 if (receiver->is_exiting()) { // thread is in the process of exiting | |
3093 return; | |
3094 } | |
3095 receiver->set_external_suspend(); | |
3096 } | |
3097 | |
3098 // java_suspend() will catch threads in the process of exiting | |
3099 // and will ignore them. | |
3100 receiver->java_suspend(); | |
3101 | |
3102 // It would be nice to have the following assertion in all the | |
3103 // time, but it is possible for a racing resume request to have | |
3104 // resumed this thread right after we suspended it. Temporarily | |
3105 // enable this assertion if you are chasing a different kind of | |
3106 // bug. | |
3107 // | |
3108 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
3109 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
3110 } | |
3111 JVM_END | |
3112 | |
3113 | |
3114 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3115 JVMWrapper("JVM_ResumeThread"); | |
3116 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3117 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3118 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3119 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3120 // looks at it. | |
3121 MutexLocker ml(Threads_lock); | |
3122 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3123 if (thr != NULL) { | |
3124 // the thread has run and is not in the process of exiting | |
3125 thr->java_resume(); | |
3126 } | |
3127 JVM_END | |
3128 | |
3129 | |
3130 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3131 JVMWrapper("JVM_SetThreadPriority"); | |
3132 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3133 MutexLocker ml(Threads_lock); | |
3134 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3135 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3136 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3137 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3138 Thread::set_priority(thr, (ThreadPriority)prio); | |
3139 } | |
3140 JVM_END | |
3141 | |
3142 | |
3143 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3144 JVMWrapper("JVM_Yield"); | |
3145 if (os::dont_yield()) return; | |
4006 | 3146 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3147 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3148 #else /* USDT2 */ |
3149 HOTSPOT_THREAD_YIELD(); | |
3150 #endif /* USDT2 */ | |
0 | 3151 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3152 // Critical for similar threading behaviour | |
3153 if (ConvertYieldToSleep) { | |
3154 os::sleep(thread, MinSleepInterval, false); | |
3155 } else { | |
3156 os::yield(); | |
3157 } | |
3158 JVM_END | |
3159 | |
3160 | |
3161 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3162 JVMWrapper("JVM_Sleep"); | |
3163 | |
3164 if (millis < 0) { | |
3165 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3166 } | |
3167 | |
3168 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3169 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3170 } | |
3171 | |
3172 // Save current thread state and restore it at the end of this block. | |
3173 // And set new thread state to SLEEPING. | |
3174 JavaThreadSleepState jtss(thread); | |
3175 | |
4006 | 3176 #ifndef USDT2 |
1324
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6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3177 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3178 #else /* USDT2 */ |
3179 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3180 millis); | |
3181 #endif /* USDT2 */ | |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3182 |
10405 | 3183 EventThreadSleep event; |
3184 | |
0 | 3185 if (millis == 0) { |
3186 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3187 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3188 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3189 // for SOLARIS | |
3190 if (ConvertSleepToYield) { | |
3191 os::yield(); | |
3192 } else { | |
3193 ThreadState old_state = thread->osthread()->get_state(); | |
3194 thread->osthread()->set_state(SLEEPING); | |
3195 os::sleep(thread, MinSleepInterval, false); | |
3196 thread->osthread()->set_state(old_state); | |
3197 } | |
3198 } else { | |
3199 ThreadState old_state = thread->osthread()->get_state(); | |
3200 thread->osthread()->set_state(SLEEPING); | |
3201 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3202 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3203 // us while we were sleeping. We do not overwrite those. | |
3204 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3205 if (event.should_commit()) { |
3206 event.set_time(millis); | |
3207 event.commit(); | |
3208 } | |
4006 | 3209 #ifndef USDT2 |
1324
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6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3210 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3211 #else /* USDT2 */ |
3212 HOTSPOT_THREAD_SLEEP_END( | |
3213 1); | |
3214 #endif /* USDT2 */ | |
0 | 3215 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3216 // to properly restore the thread state. That's likely wrong. | |
3217 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3218 } | |
3219 } | |
3220 thread->osthread()->set_state(old_state); | |
3221 } | |
10405 | 3222 if (event.should_commit()) { |
3223 event.set_time(millis); | |
3224 event.commit(); | |
3225 } | |
4006 | 3226 #ifndef USDT2 |
1324
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6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3227 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3228 #else /* USDT2 */ |
3229 HOTSPOT_THREAD_SLEEP_END( | |
3230 0); | |
3231 #endif /* USDT2 */ | |
0 | 3232 JVM_END |
3233 | |
3234 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3235 JVMWrapper("JVM_CurrentThread"); | |
3236 oop jthread = thread->threadObj(); | |
3237 assert (thread != NULL, "no current thread!"); | |
3238 return JNIHandles::make_local(env, jthread); | |
3239 JVM_END | |
3240 | |
3241 | |
3242 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3243 JVMWrapper("JVM_CountStackFrames"); | |
3244 | |
3245 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3246 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3247 bool throw_illegal_thread_state = false; | |
3248 int count = 0; | |
3249 | |
3250 { | |
3251 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3252 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3253 // acquire of the lock | |
3254 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3255 | |
3256 if (thr == NULL) { | |
3257 // do nothing | |
3258 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3259 // Check whether this java thread has been suspended already. If not, throws | |
3260 // IllegalThreadStateException. We defer to throw that exception until | |
3261 // Threads_lock is released since loading exception class has to leave VM. | |
3262 // The correct way to test a thread is actually suspended is | |
3263 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3264 // the Threads_lock. The above tests are sufficient for our purposes | |
3265 // provided the walkability of the stack is stable - which it isn't | |
3266 // 100% but close enough for most practical purposes. | |
3267 throw_illegal_thread_state = true; | |
3268 } else { | |
3269 // Count all java activation, i.e., number of vframes | |
3270 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3271 // Native frames are not counted | |
3272 if (!vfst.method()->is_native()) count++; | |
3273 } | |
3274 } | |
3275 } | |
3276 | |
3277 if (throw_illegal_thread_state) { | |
3278 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3279 "this thread is not suspended"); | |
3280 } | |
3281 return count; | |
3282 JVM_END | |
3283 | |
3284 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3285 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3286 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3287 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3288 // outside the critical section. Threads_lock is hot so we want to minimize | |
3289 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3290 // two steps. The 1st phase, performed under Threads_lock, would return | |
3291 // a closure that'd be invoked after Threads_lock was dropped. | |
3292 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3293 // admit spurious wakeups. | |
3294 | |
3295 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3296 JVMWrapper("JVM_Interrupt"); | |
3297 | |
3298 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3299 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3300 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3301 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3302 // acquire of the lock | |
3303 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3304 if (thr != NULL) { | |
3305 Thread::interrupt(thr); | |
3306 } | |
3307 JVM_END | |
3308 | |
3309 | |
3310 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3311 JVMWrapper("JVM_IsInterrupted"); | |
3312 | |
3313 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3314 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3315 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3316 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3317 // acquire of the lock | |
3318 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3319 if (thr == NULL) { | |
3320 return JNI_FALSE; | |
3321 } else { | |
3322 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3323 } | |
3324 JVM_END | |
3325 | |
3326 | |
3327 // Return true iff the current thread has locked the object passed in | |
3328 | |
3329 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3330 JVMWrapper("JVM_HoldsLock"); | |
3331 assert(THREAD->is_Java_thread(), "sanity check"); | |
3332 if (obj == NULL) { | |
3333 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3334 } | |
3335 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3336 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3337 JVM_END | |
3338 | |
3339 | |
3340 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3341 JVMWrapper("JVM_DumpAllStacks"); | |
3342 VM_PrintThreads op; | |
3343 VMThread::execute(&op); | |
3344 if (JvmtiExport::should_post_data_dump()) { | |
3345 JvmtiExport::post_data_dump(); | |
3346 } | |
3347 JVM_END | |
3348 | |
4006 | 3349 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3350 JVMWrapper("JVM_SetNativeThreadName"); | |
3351 ResourceMark rm(THREAD); | |
3352 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3353 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3354 // Thread naming only supported for the current thread, doesn't work for | |
3355 // target threads. | |
3356 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3357 // we don't set the name of an attached thread to avoid stepping | |
3358 // on other programs | |
3359 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3360 os::set_native_thread_name(thread_name); | |
3361 } | |
3362 JVM_END | |
0 | 3363 |
3364 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3365 | |
3366 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3367 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3368 if (jthread->privileged_stack_top() == NULL) return false; | |
3369 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3370 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3371 if (loader == NULL) return true; | |
3372 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3373 if (trusted) return true; | |
3374 } | |
3375 return false; | |
3376 } | |
3377 | |
3378 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3379 JVMWrapper("JVM_CurrentLoadedClass"); | |
3380 ResourceMark rm(THREAD); | |
3381 | |
3382 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3383 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3384 bool trusted = is_trusted_frame(thread, &vfst); | |
3385 if (trusted) return NULL; | |
3386 | |
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3387 Method* m = vfst.method(); |
0 | 3388 if (!m->is_native()) { |
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3389 InstanceKlass* holder = m->method_holder(); |
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3390 oop loader = holder->class_loader(); |
0 | 3391 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
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3392 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3393 } |
3394 } | |
3395 } | |
3396 return NULL; | |
3397 JVM_END | |
3398 | |
3399 | |
3400 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3401 JVMWrapper("JVM_CurrentClassLoader"); | |
3402 ResourceMark rm(THREAD); | |
3403 | |
3404 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3405 | |
3406 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3407 bool trusted = is_trusted_frame(thread, &vfst); | |
3408 if (trusted) return NULL; | |
3409 | |
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3410 Method* m = vfst.method(); |
0 | 3411 if (!m->is_native()) { |
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3412 InstanceKlass* holder = m->method_holder(); |
0 | 3413 assert(holder->is_klass(), "just checking"); |
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3414 oop loader = holder->class_loader(); |
0 | 3415 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3416 return JNIHandles::make_local(env, loader); | |
3417 } | |
3418 } | |
3419 } | |
3420 return NULL; | |
3421 JVM_END | |
3422 | |
3423 | |
3424 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3425 JVMWrapper("JVM_GetClassContext"); | |
3426 ResourceMark rm(THREAD); | |
3427 JvmtiVMObjectAllocEventCollector oam; | |
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3428 vframeStream vfst(thread); |
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|
3429 |
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3430 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3431 // This must only be called from SecurityManager.getClassContext |
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3432 Method* m = vfst.method(); |
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3433 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3434 m->name() == vmSymbols::getClassContext_name() && |
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3435 m->signature() == vmSymbols::void_class_array_signature())) { |
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3436 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3437 } |
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3438 } |
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|
3439 |
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3440 // Collect method holders |
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3441 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3442 for (; !vfst.at_end(); vfst.security_next()) { |
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3443 Method* m = vfst.method(); |
0 | 3444 // Native frames are not returned |
8866
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3445 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3446 Klass* holder = m->method_holder(); |
0 | 3447 assert(holder->is_klass(), "just checking"); |
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|
3448 klass_array->append(holder); |
0 | 3449 } |
3450 } | |
3451 | |
3452 // Create result array of type [Ljava/lang/Class; | |
11001
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3453 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3454 // Fill in mirrors corresponding to method holders |
11001
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|
3455 for (int i = 0; i < klass_array->length(); i++) { |
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|
3456 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3457 } |
3458 | |
3459 return (jobjectArray) JNIHandles::make_local(env, result); | |
3460 JVM_END | |
3461 | |
3462 | |
3463 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3464 JVMWrapper("JVM_ClassDepth"); | |
3465 ResourceMark rm(THREAD); | |
3466 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3467 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3468 | |
3469 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3470 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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3471 if (class_name_sym == NULL) { |
0 | 3472 return -1; |
3473 } | |
3474 | |
3475 int depth = 0; | |
3476 | |
3477 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3478 if (!vfst.method()->is_native()) { | |
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|
3479 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3480 assert(holder->is_klass(), "just checking"); |
6940
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|
3481 if (holder->name() == class_name_sym) { |
0 | 3482 return depth; |
3483 } | |
3484 depth++; | |
3485 } | |
3486 } | |
3487 return -1; | |
3488 JVM_END | |
3489 | |
3490 | |
3491 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3492 JVMWrapper("JVM_ClassLoaderDepth"); | |
3493 ResourceMark rm(THREAD); | |
3494 int depth = 0; | |
3495 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3496 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3497 bool trusted = is_trusted_frame(thread, &vfst); | |
3498 if (trusted) return -1; | |
3499 | |
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3500 Method* m = vfst.method(); |
0 | 3501 if (!m->is_native()) { |
6940
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3502 InstanceKlass* holder = m->method_holder(); |
0 | 3503 assert(holder->is_klass(), "just checking"); |
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3504 oop loader = holder->class_loader(); |
0 | 3505 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3506 return depth; | |
3507 } | |
3508 depth++; | |
3509 } | |
3510 } | |
3511 return -1; | |
3512 JVM_END | |
3513 | |
3514 | |
3515 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3516 | |
3517 | |
3518 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3519 JVMWrapper("JVM_GetSystemPackage"); | |
3520 ResourceMark rm(THREAD); | |
3521 JvmtiVMObjectAllocEventCollector oam; | |
3522 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3523 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3524 return (jstring) JNIHandles::make_local(result); | |
3525 JVM_END | |
3526 | |
3527 | |
3528 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3529 JVMWrapper("JVM_GetSystemPackages"); | |
3530 JvmtiVMObjectAllocEventCollector oam; | |
3531 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3532 return (jobjectArray) JNIHandles::make_local(result); | |
3533 JVM_END | |
3534 | |
3535 | |
3536 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3537 | |
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3538 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3539 if (current_class == NULL) { |
3540 return true; | |
3541 } | |
3542 if ((current_class == field_class) || access.is_public()) { | |
3543 return true; | |
3544 } | |
3545 | |
3546 if (access.is_protected()) { | |
3547 // See if current_class is a subclass of field_class | |
6983 | 3548 if (current_class->is_subclass_of(field_class)) { |
0 | 3549 return true; |
3550 } | |
3551 } | |
3552 | |
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3553 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3554 } |
3555 | |
3556 | |
3557 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3558 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3559 JVMWrapper("JVM_AllocateNewObject"); | |
3560 JvmtiVMObjectAllocEventCollector oam; | |
3561 // Receiver is not used | |
3562 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3563 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3564 | |
3565 // Cannot instantiate primitive types | |
3566 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3567 ResourceMark rm(THREAD); | |
3568 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3569 } | |
3570 | |
3571 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3572 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3573 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3574 ResourceMark rm(THREAD); |
3575 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3576 } | |
3577 | |
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3578 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3579 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3580 |
3581 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3582 | |
3583 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3584 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3585 | |
3586 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3587 curr_klass->initialize(CHECK_NULL); | |
3588 | |
3589 methodHandle m (THREAD, | |
3590 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3591 vmSymbols::void_method_signature())); | |
3592 if (m.is_null()) { | |
3593 ResourceMark rm(THREAD); | |
3594 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3595 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3596 vmSymbols::object_initializer_name(), |
3597 vmSymbols::void_method_signature())); | |
3598 } | |
3599 | |
3600 if (curr_klass == init_klass && !m->is_public()) { | |
3601 // Calling the constructor for class 'curr_klass'. | |
3602 // Only allow calls to a public no-arg constructor. | |
3603 // This path corresponds to creating an Externalizable object. | |
3604 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3605 } | |
3606 | |
3607 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3608 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3609 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3610 } | |
3611 | |
3612 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3613 // Call constructor m. This might call a constructor higher up in the hierachy | |
3614 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3615 | |
3616 return JNIHandles::make_local(obj()); | |
3617 JVM_END | |
3618 | |
3619 | |
3620 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3621 JVMWrapper("JVM_AllocateNewArray"); | |
3622 JvmtiVMObjectAllocEventCollector oam; | |
3623 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3624 | |
3625 if (java_lang_Class::is_primitive(mirror)) { | |
3626 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3627 } | |
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3628 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3629 oop result; |
3630 | |
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3631 if (k->oop_is_typeArray()) { |
0 | 3632 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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diff
changeset
|
3633 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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|
3634 } else if (k->oop_is_objArray()) { |
0 | 3635 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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changeset
|
3636 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3637 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3638 result = oak->allocate(length, CHECK_NULL); | |
3639 } else { | |
3640 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3641 } | |
3642 return JNIHandles::make_local(env, result); | |
3643 JVM_END | |
3644 | |
3645 | |
3646 // Return the first non-null class loader up the execution stack, or null | |
3647 // if only code from the null class loader is on the stack. | |
3648 | |
3649 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3650 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3651 // UseNewReflection | |
3652 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
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diff
changeset
|
3653 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3654 if (loader != NULL) { |
3655 return JNIHandles::make_local(env, loader); | |
3656 } | |
3657 } | |
3658 return NULL; | |
3659 JVM_END | |
3660 | |
3661 | |
3662 // Load a class relative to the most recent class on the stack with a non-null | |
3663 // classloader. | |
3664 // This function has been deprecated and should not be considered part of the | |
3665 // specified JVM interface. | |
3666 | |
3667 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3668 jclass currClass, jstring currClassName)) | |
3669 JVMWrapper("JVM_LoadClass0"); | |
3670 // Receiver is not used | |
3671 ResourceMark rm(THREAD); | |
3672 | |
3673 // Class name argument is not guaranteed to be in internal format | |
3674 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3675 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3676 | |
3677 const char* str = java_lang_String::as_utf8_string(string()); | |
3678 | |
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|
3679 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3680 // It's impossible to create this class; the name cannot fit |
3681 // into the constant pool. | |
3682 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3683 } | |
3684 | |
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|
3685 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3686 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3687 // Find the most recent class on the stack with a non-null classloader | |
3688 oop loader = NULL; | |
3689 oop protection_domain = NULL; | |
3690 if (curr_klass.is_null()) { | |
3691 for (vframeStream vfst(thread); | |
3692 !vfst.at_end() && loader == NULL; | |
3693 vfst.next()) { | |
3694 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
|
3695 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
|
3696 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3697 protection_domain = holder->protection_domain(); |
0 | 3698 } |
3699 } | |
3700 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3701 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3702 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3703 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3704 } |
3705 Handle h_loader(THREAD, loader); | |
3706 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3707 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
|
3708 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3709 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
3710 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
|
3711 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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parents:
579
diff
changeset
|
3712 return result; |
0 | 3713 JVM_END |
3714 | |
3715 | |
3716 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3717 | |
3718 | |
3719 // resolve array handle and check arguments | |
3720 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3721 if (arr == NULL) { | |
3722 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3723 } | |
3724 oop a = JNIHandles::resolve_non_null(arr); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
3725 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3726 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3727 } | |
3728 return arrayOop(a); | |
3729 } | |
3730 | |
3731 | |
3732 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3733 JVMWrapper("JVM_GetArrayLength"); | |
3734 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3735 return a->length(); | |
3736 JVM_END | |
3737 | |
3738 | |
3739 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3740 JVMWrapper("JVM_Array_Get"); | |
3741 JvmtiVMObjectAllocEventCollector oam; | |
3742 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3743 jvalue value; | |
3744 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3745 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3746 return JNIHandles::make_local(env, box); | |
3747 JVM_END | |
3748 | |
3749 | |
3750 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3751 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3752 jvalue value; | |
3753 value.i = 0; // to initialize value before getting used in CHECK | |
3754 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3755 assert(a->is_typeArray(), "just checking"); | |
3756 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3757 BasicType wide_type = (BasicType) wCode; | |
3758 if (type != wide_type) { | |
3759 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3760 } | |
3761 return value; | |
3762 JVM_END | |
3763 | |
3764 | |
3765 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3766 JVMWrapper("JVM_SetArrayElement"); | |
3767 arrayOop a = check_array(env, arr, false, CHECK); | |
3768 oop box = JNIHandles::resolve(val); | |
3769 jvalue value; | |
3770 value.i = 0; // to initialize value before getting used in CHECK | |
3771 BasicType value_type; | |
3772 if (a->is_objArray()) { | |
3773 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3774 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3775 } else { | |
3776 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3777 } | |
3778 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3779 JVM_END | |
3780 | |
3781 | |
3782 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3783 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3784 arrayOop a = check_array(env, arr, true, CHECK); | |
3785 assert(a->is_typeArray(), "just checking"); | |
3786 BasicType value_type = (BasicType) vCode; | |
3787 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3788 JVM_END | |
3789 | |
3790 | |
3791 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3792 JVMWrapper("JVM_NewArray"); | |
3793 JvmtiVMObjectAllocEventCollector oam; | |
3794 oop element_mirror = JNIHandles::resolve(eltClass); | |
3795 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3796 return JNIHandles::make_local(env, result); | |
3797 JVM_END | |
3798 | |
3799 | |
3800 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3801 JVMWrapper("JVM_NewMultiArray"); | |
3802 JvmtiVMObjectAllocEventCollector oam; | |
3803 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3804 oop element_mirror = JNIHandles::resolve(eltClass); | |
3805 assert(dim_array->is_typeArray(), "just checking"); | |
3806 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3807 return JNIHandles::make_local(env, result); | |
3808 JVM_END | |
3809 | |
3810 | |
3811 // Networking library support //////////////////////////////////////////////////////////////////// | |
3812 | |
3813 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3814 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3815 return 0; |
0 | 3816 JVM_END |
3817 | |
3818 | |
3819 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3820 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3821 return os::socket(domain, type, protocol); |
0 | 3822 JVM_END |
3823 | |
3824 | |
3825 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3826 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3827 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3828 return os::socket_close(fd); |
0 | 3829 JVM_END |
3830 | |
3831 | |
3832 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3833 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3834 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3835 return os::socket_shutdown(fd, howto); |
0 | 3836 JVM_END |
3837 | |
3838 | |
3839 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3840 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3841 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3842 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3843 JVM_END |
3844 | |
3845 | |
3846 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3847 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3848 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3849 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3850 JVM_END |
3851 | |
3852 | |
3853 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3854 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3855 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3856 return os::timeout(fd, timeout); |
0 | 3857 JVM_END |
3858 | |
3859 | |
3860 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3861 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3862 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3863 return os::listen(fd, count); |
0 | 3864 JVM_END |
3865 | |
3866 | |
3867 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3868 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3869 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3870 return os::connect(fd, him, (socklen_t)len); |
0 | 3871 JVM_END |
3872 | |
3873 | |
3874 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3875 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3876 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3877 return os::bind(fd, him, (socklen_t)len); |
0 | 3878 JVM_END |
3879 | |
3880 | |
3881 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3882 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3883 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3884 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3885 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3886 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3887 return result; |
0 | 3888 JVM_END |
3889 | |
3890 | |
3891 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3892 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3893 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3894 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3895 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
|
3896 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3897 return result; |
0 | 3898 JVM_END |
3899 | |
3900 | |
3901 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3902 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3903 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3904 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3905 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
|
3906 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3907 return result; |
0 | 3908 JVM_END |
3909 | |
3910 | |
3911 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3912 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3913 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3914 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3915 JVM_END |
3916 | |
3917 | |
3918 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3919 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3920 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3921 return os::socket_available(fd, pbytes); |
0 | 3922 JVM_END |
3923 | |
3924 | |
3925 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3926 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3927 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3928 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3929 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
|
3930 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3931 return result; |
0 | 3932 JVM_END |
3933 | |
3934 | |
3935 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3936 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3937 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3938 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3939 JVM_END |
3940 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3941 |
0 | 3942 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3943 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3944 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3945 JVM_END |
0 | 3946 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3947 |
0 | 3948 // Library support /////////////////////////////////////////////////////////////////////////// |
3949 | |
3950 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3951 //%note jvm_ct | |
3952 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3953 char ebuf[1024]; | |
3954 void *load_result; | |
3955 { | |
3956 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3957 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3958 } |
3959 if (load_result == NULL) { | |
3960 char msg[1024]; | |
3961 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3962 // Since 'ebuf' may contain a string encoded using | |
3963 // platform encoding scheme, we need to pass | |
3964 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3965 // as the last argument. See bug 6367357. | |
3966 Handle h_exception = | |
3967 Exceptions::new_exception(thread, | |
3968 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3969 msg, Exceptions::unsafe_to_utf8); | |
3970 | |
3971 THROW_HANDLE_0(h_exception); | |
3972 } | |
3973 return load_result; | |
3974 JVM_END | |
3975 | |
3976 | |
3977 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3978 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3979 os::dll_unload(handle); |
0 | 3980 JVM_END |
3981 | |
3982 | |
3983 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3984 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3985 return os::dll_lookup(handle, name); |
0 | 3986 JVM_END |
3987 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3988 |
0 | 3989 // Floating point support //////////////////////////////////////////////////////////////////// |
3990 | |
3991 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3992 JVMWrapper("JVM_IsNaN"); | |
3993 return g_isnan(a); | |
3994 JVM_END | |
3995 | |
3996 | |
3997 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3998 | |
3999 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
4000 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
4001 return Threads::is_supported_jni_version_including_1_1(version); | |
4002 JVM_END | |
4003 | |
4004 | |
4005 // String support /////////////////////////////////////////////////////////////////////////// | |
4006 | |
4007 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
4008 JVMWrapper("JVM_InternString"); | |
4009 JvmtiVMObjectAllocEventCollector oam; | |
4010 if (str == NULL) return NULL; | |
4011 oop string = JNIHandles::resolve_non_null(str); | |
4012 oop result = StringTable::intern(string, CHECK_NULL); | |
4013 return (jstring) JNIHandles::make_local(env, result); | |
4014 JVM_END | |
4015 | |
4016 | |
4017 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
4018 | |
4019 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
4020 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
4021 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
4022 // that only works with java threads. | |
4023 | |
4024 | |
4025 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
4026 VM_Exit::block_if_vm_exited(); | |
4027 JVMWrapper("JVM_RawMonitorCreate"); | |
4028 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
4029 } | |
4030 | |
4031 | |
4032 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
4033 VM_Exit::block_if_vm_exited(); | |
4034 JVMWrapper("JVM_RawMonitorDestroy"); | |
4035 delete ((Mutex*) mon); | |
4036 } | |
4037 | |
4038 | |
4039 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
4040 VM_Exit::block_if_vm_exited(); | |
4041 JVMWrapper("JVM_RawMonitorEnter"); | |
4042 ((Mutex*) mon)->jvm_raw_lock(); | |
4043 return 0; | |
4044 } | |
4045 | |
4046 | |
4047 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
4048 VM_Exit::block_if_vm_exited(); | |
4049 JVMWrapper("JVM_RawMonitorExit"); | |
4050 ((Mutex*) mon)->jvm_raw_unlock(); | |
4051 } | |
4052 | |
4053 | |
4054 // Support for Serialization | |
4055 | |
4056 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
4057 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
4058 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
4059 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
4060 | |
4061 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
4062 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
4063 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
4064 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
4065 | |
4066 | |
4067 void initialize_converter_functions() { | |
4068 if (JDK_Version::is_gte_jdk14x_version()) { | |
4069 // These functions only exist for compatibility with 1.3.1 and earlier | |
4070 return; | |
4071 } | |
4072 | |
4073 // called from universe_post_init() | |
4074 assert( | |
4075 int_bits_to_float_fn == NULL && | |
4076 long_bits_to_double_fn == NULL && | |
4077 float_to_int_bits_fn == NULL && | |
4078 double_to_long_bits_fn == NULL , | |
4079 "initialization done twice" | |
4080 ); | |
4081 // initialize | |
4082 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
4083 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
4084 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
4085 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
4086 // verify | |
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 failed" | |
4093 ); | |
4094 } | |
4095 | |
4096 | |
4097 | |
4098 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4099 | |
18051 | 4100 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
4101 Handle loader, Handle protection_domain, | |
4102 jboolean throwError, TRAPS) { | |
0 | 4103 // Security Note: |
4104 // The Java level wrapper will perform the necessary security check allowing | |
18051 | 4105 // us to pass the NULL as the initiating class loader. The VM is responsible for |
4106 // the checkPackageAccess relative to the initiating class loader via the | |
4107 // protection_domain. The protection_domain is passed as NULL by the java code | |
4108 // if there is no security manager in 3-arg Class.forName(). | |
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4109 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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4110 |
0 | 4111 KlassHandle klass_handle(THREAD, klass); |
4112 // Check if we should initialize the class | |
4113 if (init && klass_handle->oop_is_instance()) { | |
4114 klass_handle->initialize(CHECK_NULL); | |
4115 } | |
4116 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4117 } | |
4118 | |
4119 | |
4120 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4121 | |
4122 #ifndef PRODUCT | |
4123 | |
4124 extern "C" { | |
4125 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4126 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4127 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4128 } | |
4129 | |
4130 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4131 JVMWrapper("JVM_AccessBoolVMFlag"); | |
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4132 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4133 JVM_END |
4134 | |
4135 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4136 JVMWrapper("JVM_AccessVMIntFlag"); | |
4137 intx v; | |
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4138 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4139 *value = (jint)v; |
4140 return result; | |
4141 JVM_END | |
4142 | |
4143 | |
4144 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4145 JVMWrapper("JVM_VMBreakPoint"); | |
4146 oop the_obj = JNIHandles::resolve(obj); | |
4147 BREAKPOINT; | |
4148 JVM_END | |
4149 | |
4150 | |
4151 #endif | |
4152 | |
4153 | |
4154 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4155 | |
4156 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4157 JVMWrapper("JVM_InvokeMethod"); | |
4158 Handle method_handle; | |
4159 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4160 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4161 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4162 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4163 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4164 jobject res = JNIHandles::make_local(env, result); | |
4165 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4166 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4167 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4168 if (java_lang_Class::is_primitive(ret_type)) { | |
4169 // Only for primitive type vm allocates memory for java object. | |
4170 // See box() method. | |
4171 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4172 } | |
4173 } | |
4174 return res; | |
4175 } else { | |
4176 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4177 } | |
4178 JVM_END | |
4179 | |
4180 | |
4181 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4182 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4183 oop constructor_mirror = JNIHandles::resolve(c); | |
4184 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4185 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4186 jobject res = JNIHandles::make_local(env, result); | |
4187 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4188 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4189 } | |
4190 return res; | |
4191 JVM_END | |
4192 | |
4193 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4194 | |
4195 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4196 JVMWrapper("JVM_SupportsCX8"); | |
4197 return VM_Version::supports_cx8(); | |
4198 JVM_END | |
4199 | |
4200 | |
4201 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4202 JVMWrapper("JVM_CX8Field"); | |
4203 jlong res; | |
4204 oop o = JNIHandles::resolve(obj); | |
4205 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4206 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4207 | |
4208 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4209 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4210 | |
4211 return res == oldVal; | |
4212 JVM_END | |
4213 | |
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4214 // DTrace /////////////////////////////////////////////////////////////////// |
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4215 |
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4216 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4217 JVMWrapper("JVM_DTraceGetVersion"); |
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4218 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4219 JVM_END |
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4220 |
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4221 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4222 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4223 JVM_DTraceProvider* providers)) |
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4224 JVMWrapper("JVM_DTraceActivate"); |
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4225 return DTraceJSDT::activate( |
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4226 version, module_name, providers_count, providers, CHECK_0); |
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4227 JVM_END |
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4228 |
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4229 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4230 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4231 return DTraceJSDT::is_probe_enabled(method); |
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4232 JVM_END |
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4233 |
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4234 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4235 JVMWrapper("JVM_DTraceDispose"); |
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4236 DTraceJSDT::dispose(handle); |
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4237 JVM_END |
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4238 |
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4239 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4240 JVMWrapper("JVM_DTraceIsSupported"); |
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4241 return DTraceJSDT::is_supported(); |
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4242 JVM_END |
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4243 |
0 | 4244 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4245 // jvmti agent threads, and JNI attaching threads are skipped) | |
4246 // See CR 6404306 regarding JNI attaching threads | |
4247 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4248 ResourceMark rm(THREAD); | |
4249 ThreadsListEnumerator tle(THREAD, false, false); | |
4250 JvmtiVMObjectAllocEventCollector oam; | |
4251 | |
4252 int num_threads = tle.num_threads(); | |
1142 | 4253 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4254 objArrayHandle threads_ah(THREAD, r); |
4255 | |
4256 for (int i = 0; i < num_threads; i++) { | |
4257 Handle h = tle.get_threadObj(i); | |
4258 threads_ah->obj_at_put(i, h()); | |
4259 } | |
4260 | |
4261 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4262 JVM_END | |
4263 | |
4264 | |
4265 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4266 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4267 // the corresponding entry in the given threads array | |
4268 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4269 JVMWrapper("JVM_DumpThreads"); | |
4270 JvmtiVMObjectAllocEventCollector oam; | |
4271 | |
4272 // Check if threads is null | |
4273 if (threads == NULL) { | |
4274 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4275 } | |
4276 | |
4277 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4278 objArrayHandle ah(THREAD, a); | |
4279 int num_threads = ah->length(); | |
4280 // check if threads is non-empty array | |
4281 if (num_threads == 0) { | |
4282 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4283 } | |
4284 | |
4285 // check if threads is not an array of objects of Thread class | |
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4286 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4287 if (k != SystemDictionary::Thread_klass()) { |
0 | 4288 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4289 } | |
4290 | |
4291 ResourceMark rm(THREAD); | |
4292 | |
4293 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4294 for (int i = 0; i < num_threads; i++) { | |
4295 oop thread_obj = ah->obj_at(i); | |
4296 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4297 thread_handle_array->append(h); | |
4298 } | |
4299 | |
4300 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4301 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4302 | |
4303 JVM_END | |
4304 | |
4305 // JVM monitoring and management support | |
4306 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4307 return Management::get_jmm_interface(version); | |
4308 JVM_END | |
4309 | |
4310 // com.sun.tools.attach.VirtualMachine agent properties support | |
4311 // | |
4312 // Initialize the agent properties with the properties maintained in the VM | |
4313 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4314 JVMWrapper("JVM_InitAgentProperties"); | |
4315 ResourceMark rm; | |
4316 | |
4317 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4318 | |
4319 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4320 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4321 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4322 return properties; | |
4323 JVM_END | |
4324 | |
4325 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4326 { | |
4327 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4328 JvmtiVMObjectAllocEventCollector oam; | |
4329 | |
4330 if (ofClass == NULL) { | |
4331 return NULL; | |
4332 } | |
4333 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4334 // Special handling for primitive objects | |
4335 if (java_lang_Class::is_primitive(mirror())) { | |
4336 return NULL; | |
4337 } | |
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4338 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4339 if (!k->oop_is_instance()) { |
0 | 4340 return NULL; |
4341 } | |
4342 instanceKlassHandle ik_h(THREAD, k); | |
4343 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4344 if (encl_method_class_idx == 0) { | |
4345 return NULL; | |
4346 } | |
1142 | 4347 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4348 objArrayHandle dest(THREAD, dest_o); |
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4349 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4350 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4351 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4352 if (encl_method_method_idx != 0) { | |
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4353 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4354 extract_low_short_from_int( |
4355 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4356 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4357 dest->obj_at_put(1, str()); | |
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4358 sym = ik_h->constants()->symbol_at( |
0 | 4359 extract_high_short_from_int( |
4360 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4361 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4362 dest->obj_at_put(2, str()); | |
4363 } | |
4364 return (jobjectArray) JNIHandles::make_local(dest()); | |
4365 } | |
4366 JVM_END | |
4367 | |
4368 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4369 jint javaThreadState)) | |
4370 { | |
4371 // If new thread states are added in future JDK and VM versions, | |
4372 // this should check if the JDK version is compatible with thread | |
4373 // states supported by the VM. Return NULL if not compatible. | |
4374 // | |
4375 // This function must map the VM java_lang_Thread::ThreadStatus | |
4376 // to the Java thread state that the JDK supports. | |
4377 // | |
4378 | |
4379 typeArrayHandle values_h; | |
4380 switch (javaThreadState) { | |
4381 case JAVA_THREAD_STATE_NEW : { | |
4382 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4383 values_h = typeArrayHandle(THREAD, r); | |
4384 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4385 break; | |
4386 } | |
4387 case JAVA_THREAD_STATE_RUNNABLE : { | |
4388 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4389 values_h = typeArrayHandle(THREAD, r); | |
4390 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4391 break; | |
4392 } | |
4393 case JAVA_THREAD_STATE_BLOCKED : { | |
4394 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4395 values_h = typeArrayHandle(THREAD, r); | |
4396 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4397 break; | |
4398 } | |
4399 case JAVA_THREAD_STATE_WAITING : { | |
4400 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4401 values_h = typeArrayHandle(THREAD, r); | |
4402 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4403 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4404 break; | |
4405 } | |
4406 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4407 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4408 values_h = typeArrayHandle(THREAD, r); | |
4409 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4410 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4411 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4412 break; | |
4413 } | |
4414 case JAVA_THREAD_STATE_TERMINATED : { | |
4415 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4416 values_h = typeArrayHandle(THREAD, r); | |
4417 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4418 break; | |
4419 } | |
4420 default: | |
4421 // Unknown state - probably incompatible JDK version | |
4422 return NULL; | |
4423 } | |
4424 | |
4425 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4426 } | |
4427 JVM_END | |
4428 | |
4429 | |
4430 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4431 jint javaThreadState, | |
4432 jintArray values)) | |
4433 { | |
4434 // If new thread states are added in future JDK and VM versions, | |
4435 // this should check if the JDK version is compatible with thread | |
4436 // states supported by the VM. Return NULL if not compatible. | |
4437 // | |
4438 // This function must map the VM java_lang_Thread::ThreadStatus | |
4439 // to the Java thread state that the JDK supports. | |
4440 // | |
4441 | |
4442 ResourceMark rm; | |
4443 | |
4444 // Check if threads is null | |
4445 if (values == NULL) { | |
4446 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4447 } | |
4448 | |
4449 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4450 typeArrayHandle values_h(THREAD, v); | |
4451 | |
4452 objArrayHandle names_h; | |
4453 switch (javaThreadState) { | |
4454 case JAVA_THREAD_STATE_NEW : { | |
4455 assert(values_h->length() == 1 && | |
4456 values_h->int_at(0) == java_lang_Thread::NEW, | |
4457 "Invalid threadStatus value"); | |
4458 | |
1142 | 4459 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4460 1, /* only 1 substate */ |
4461 CHECK_NULL); | |
4462 names_h = objArrayHandle(THREAD, r); | |
4463 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4464 names_h->obj_at_put(0, name()); | |
4465 break; | |
4466 } | |
4467 case JAVA_THREAD_STATE_RUNNABLE : { | |
4468 assert(values_h->length() == 1 && | |
4469 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
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("RUNNABLE", CHECK_NULL); | |
4477 names_h->obj_at_put(0, name()); | |
4478 break; | |
4479 } | |
4480 case JAVA_THREAD_STATE_BLOCKED : { | |
4481 assert(values_h->length() == 1 && | |
4482 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
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("BLOCKED", CHECK_NULL); | |
4490 names_h->obj_at_put(0, name()); | |
4491 break; | |
4492 } | |
4493 case JAVA_THREAD_STATE_WAITING : { | |
4494 assert(values_h->length() == 2 && | |
4495 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4496 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4497 "Invalid threadStatus value"); | |
1142 | 4498 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4499 2, /* number of substates */ |
4500 CHECK_NULL); | |
4501 names_h = objArrayHandle(THREAD, r); | |
4502 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4503 CHECK_NULL); | |
4504 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4505 CHECK_NULL); | |
4506 names_h->obj_at_put(0, name0()); | |
4507 names_h->obj_at_put(1, name1()); | |
4508 break; | |
4509 } | |
4510 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4511 assert(values_h->length() == 3 && | |
4512 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4513 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4514 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4515 "Invalid threadStatus value"); | |
1142 | 4516 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4517 3, /* number of substates */ |
4518 CHECK_NULL); | |
4519 names_h = objArrayHandle(THREAD, r); | |
4520 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4521 CHECK_NULL); | |
4522 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4523 CHECK_NULL); | |
4524 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4525 CHECK_NULL); | |
4526 names_h->obj_at_put(0, name0()); | |
4527 names_h->obj_at_put(1, name1()); | |
4528 names_h->obj_at_put(2, name2()); | |
4529 break; | |
4530 } | |
4531 case JAVA_THREAD_STATE_TERMINATED : { | |
4532 assert(values_h->length() == 1 && | |
4533 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4534 "Invalid threadStatus value"); | |
1142 | 4535 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4536 1, /* only 1 substate */ |
4537 CHECK_NULL); | |
4538 names_h = objArrayHandle(THREAD, r); | |
4539 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4540 names_h->obj_at_put(0, name()); | |
4541 break; | |
4542 } | |
4543 default: | |
4544 // Unknown state - probably incompatible JDK version | |
4545 return NULL; | |
4546 } | |
4547 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4548 } | |
4549 JVM_END | |
4550 | |
4551 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4552 { | |
20690
d4caf9c96afd
8035893: JVM_GetVersionInfo fails to zero structure
igerasim
parents:
20677
diff
changeset
|
4553 memset(info, 0, info_size); |
0 | 4554 |
4555 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4556 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4557 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4558 | |
4559 // when we add a new capability in the jvm_version_info struct, we should also | |
4560 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4561 // counter defined in runtimeService.cpp. | |
4562 info->is_attachable = AttachListener::is_attach_supported(); | |
4563 } | |
4564 JVM_END |