Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 18067:1e657b902392
Merge
author | asaha |
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date | Tue, 10 Jun 2014 14:52:20 -0700 |
parents | 54bc75c144b0 a103c376459a |
children | eaf39a954227 8cb56c8cb30d |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
14411 | 79 #ifdef TARGET_OS_FAMILY_aix |
80 # include "jvm_aix.h" | |
81 #endif | |
3960 | 82 #ifdef TARGET_OS_FAMILY_bsd |
83 # include "jvm_bsd.h" | |
84 #endif | |
1972 | 85 |
0 | 86 #include <errno.h> |
87 | |
4006 | 88 #ifndef USDT2 |
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89 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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90 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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91 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 92 #endif /* !USDT2 */ |
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93 |
0 | 94 /* |
95 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
96 such ctors and calls MUST NOT come between an oop declaration/init and its | |
97 usage because if objects are move this may cause various memory stomps, bus | |
98 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
99 failures": | |
100 | |
101 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
102 JVMWrapper("JVM_GetClassDeclaredFields"); | |
103 | |
104 // Object address to be held directly in mirror & not visible to GC | |
105 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
106 | |
107 // If this ctor can hit a safepoint, moving objects around, then | |
108 ComplexConstructor foo; | |
109 | |
110 // Boom! mirror may point to JUNK instead of the intended object | |
111 (some dereference of mirror) | |
112 | |
113 // Here's another call that may block for GC, making mirror stale | |
114 MutexLocker ml(some_lock); | |
115 | |
116 // And here's an initializer that can result in a stale oop | |
117 // all in one step. | |
118 oop o = call_that_can_throw_exception(TRAPS); | |
119 | |
120 | |
121 The solution is to keep the oop declaration BELOW the ctor or function | |
122 call that might cause a GC, do another resolve to reassign the oop, or | |
123 consider use of a Handle instead of an oop so there is immunity from object | |
124 motion. But note that the "QUICK" entries below do not have a handlemark | |
125 and thus can only support use of handles passed in. | |
126 */ | |
127 | |
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128 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 129 ResourceMark rm; |
130 int line_number = -1; | |
131 const char * source_file = NULL; | |
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132 const char * trace = "explicit"; |
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133 InstanceKlass* caller = NULL; |
0 | 134 JavaThread* jthread = JavaThread::current(); |
135 if (jthread->has_last_Java_frame()) { | |
136 vframeStream vfst(jthread); | |
137 | |
138 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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139 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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140 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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141 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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142 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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143 |
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144 Method* last_caller = NULL; |
0 | 145 |
146 while (!vfst.at_end()) { | |
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147 Method* m = vfst.method(); |
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148 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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149 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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150 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 151 break; |
152 } | |
153 last_caller = m; | |
154 vfst.next(); | |
155 } | |
156 // if this is called from Class.forName0 and that is called from Class.forName, | |
157 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
158 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
159 bool found_it = false; | |
160 if (!vfst.at_end() && | |
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161 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 162 vfst.method()->name() == vmSymbols::forName0_name()) { |
163 vfst.next(); | |
164 if (!vfst.at_end() && | |
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165 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 166 vfst.method()->name() == vmSymbols::forName_name()) { |
167 vfst.next(); | |
168 found_it = true; | |
169 } | |
170 } else if (last_caller != NULL && | |
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171 last_caller->method_holder()->name() == |
0 | 172 vmSymbols::java_lang_ClassLoader() && |
173 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
174 last_caller->name() == vmSymbols::loadClass_name())) { | |
175 found_it = true; | |
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176 } else if (!vfst.at_end()) { |
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177 if (vfst.method()->is_native()) { |
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178 // JNI call |
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179 found_it = true; |
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180 } |
0 | 181 } |
182 if (found_it && !vfst.at_end()) { | |
183 // found the caller | |
184 caller = vfst.method()->method_holder(); | |
185 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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186 if (line_number == -1) { |
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187 // show method name if it's a native method |
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188 trace = vfst.method()->name_and_sig_as_C_string(); |
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189 } |
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190 Symbol* s = caller->source_file_name(); |
0 | 191 if (s != NULL) { |
192 source_file = s->as_C_string(); | |
193 } | |
194 } | |
195 } | |
196 if (caller != NULL) { | |
197 if (to_class != caller) { | |
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198 const char * from = caller->external_name(); |
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199 const char * to = to_class->external_name(); |
0 | 200 // print in a single call to reduce interleaving between threads |
201 if (source_file != NULL) { | |
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202 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 203 } else { |
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204 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 205 } |
206 } | |
207 } | |
208 } | |
209 | |
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210 void trace_class_resolution(Klass* to_class) { |
0 | 211 EXCEPTION_MARK; |
212 trace_class_resolution_impl(to_class, THREAD); | |
213 if (HAS_PENDING_EXCEPTION) { | |
214 CLEAR_PENDING_EXCEPTION; | |
215 } | |
216 } | |
217 | |
218 // Wrapper to trace JVM functions | |
219 | |
220 #ifdef ASSERT | |
221 class JVMTraceWrapper : public StackObj { | |
222 public: | |
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223 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
0 | 224 if (TraceJVMCalls) { |
225 va_list ap; | |
226 va_start(ap, format); | |
227 tty->print("JVM "); | |
228 tty->vprint_cr(format, ap); | |
229 va_end(ap); | |
230 } | |
231 } | |
232 }; | |
233 | |
234 Histogram* JVMHistogram; | |
235 volatile jint JVMHistogram_lock = 0; | |
236 | |
237 class JVMHistogramElement : public HistogramElement { | |
238 public: | |
239 JVMHistogramElement(const char* name); | |
240 }; | |
241 | |
242 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
243 _name = elementName; | |
244 uintx count = 0; | |
245 | |
246 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
247 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
248 count +=1; | |
249 if ( (WarnOnStalledSpinLock > 0) | |
250 && (count % WarnOnStalledSpinLock == 0)) { | |
251 warning("JVMHistogram_lock seems to be stalled"); | |
252 } | |
253 } | |
254 } | |
255 | |
256 if(JVMHistogram == NULL) | |
257 JVMHistogram = new Histogram("JVM Call Counts",100); | |
258 | |
259 JVMHistogram->add_element(this); | |
260 Atomic::dec(&JVMHistogram_lock); | |
261 } | |
262 | |
263 #define JVMCountWrapper(arg) \ | |
264 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
265 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
266 | |
267 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
268 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
269 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
270 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
271 #else | |
272 #define JVMWrapper(arg1) | |
273 #define JVMWrapper2(arg1, arg2) | |
274 #define JVMWrapper3(arg1, arg2, arg3) | |
275 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
276 #endif | |
277 | |
278 | |
279 // Interface version ///////////////////////////////////////////////////////////////////// | |
280 | |
281 | |
282 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
283 return JVM_INTERFACE_VERSION; | |
284 JVM_END | |
285 | |
286 | |
287 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
288 | |
289 | |
290 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
291 JVMWrapper("JVM_CurrentTimeMillis"); | |
292 return os::javaTimeMillis(); | |
293 JVM_END | |
294 | |
295 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
296 JVMWrapper("JVM_NanoTime"); | |
297 return os::javaTimeNanos(); | |
298 JVM_END | |
299 | |
300 | |
301 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
302 jobject dst, jint dst_pos, jint length)) | |
303 JVMWrapper("JVM_ArrayCopy"); | |
304 // Check if we have null pointers | |
305 if (src == NULL || dst == NULL) { | |
306 THROW(vmSymbols::java_lang_NullPointerException()); | |
307 } | |
308 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
309 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
310 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
311 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
312 // Do copy | |
6983 | 313 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 314 JVM_END |
315 | |
316 | |
317 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
318 JavaValue r(T_OBJECT); | |
319 // public synchronized Object put(Object key, Object value); | |
320 HandleMark hm(THREAD); | |
321 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
322 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
323 JavaCalls::call_virtual(&r, | |
324 props, | |
1142 | 325 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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326 vmSymbols::put_name(), |
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327 vmSymbols::object_object_object_signature(), |
0 | 328 key_str, |
329 value_str, | |
330 THREAD); | |
331 } | |
332 | |
333 | |
334 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
335 | |
336 | |
337 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
338 JVMWrapper("JVM_InitProperties"); | |
339 ResourceMark rm; | |
340 | |
341 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
342 | |
343 // System property list includes both user set via -D option and | |
344 // jvm system specific properties. | |
345 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
346 PUTPROP(props, p->key(), p->value()); | |
347 } | |
348 | |
349 // Convert the -XX:MaxDirectMemorySize= command line flag | |
350 // to the sun.nio.MaxDirectMemorySize property. | |
351 // Do this after setting user properties to prevent people | |
352 // from setting the value with a -D option, as requested. | |
353 { | |
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354 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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355 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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356 } else { |
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357 char as_chars[256]; |
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358 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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359 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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360 } |
0 | 361 } |
362 | |
363 // JVM monitoring and management support | |
364 // Add the sun.management.compiler property for the compiler's name | |
365 { | |
366 #undef CSIZE | |
367 #if defined(_LP64) || defined(_WIN64) | |
368 #define CSIZE "64-Bit " | |
369 #else | |
370 #define CSIZE | |
371 #endif // 64bit | |
372 | |
373 #ifdef TIERED | |
374 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
375 #else | |
376 #if defined(COMPILER1) | |
377 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
378 #elif defined(COMPILER2) | |
379 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
380 #else | |
381 const char* compiler_name = ""; | |
382 #endif // compilers | |
383 #endif // TIERED | |
384 | |
385 if (*compiler_name != '\0' && | |
386 (Arguments::mode() != Arguments::_int)) { | |
387 PUTPROP(props, "sun.management.compiler", compiler_name); | |
388 } | |
389 } | |
390 | |
391 return properties; | |
392 JVM_END | |
393 | |
394 | |
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395 /* |
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396 * Return the temporary directory that the VM uses for the attach |
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397 * and perf data files. |
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398 * |
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399 * It is important that this directory is well-known and the |
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400 * same for all VM instances. It cannot be affected by configuration |
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401 * variables such as java.io.tmpdir. |
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402 */ |
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403 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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404 JVMWrapper("JVM_GetTemporaryDirectory"); |
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405 HandleMark hm(THREAD); |
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406 const char* temp_dir = os::get_temp_directory(); |
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407 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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408 return (jstring) JNIHandles::make_local(env, h()); |
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409 JVM_END |
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410 |
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411 |
0 | 412 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
413 | |
414 extern volatile jint vm_created; | |
415 | |
416 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
417 if (vm_created != 0 && (code == 0)) { | |
418 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
419 Universe::run_finalizers_on_exit(); | |
420 } | |
421 before_exit(thread); | |
422 vm_exit(code); | |
423 JVM_END | |
424 | |
425 | |
426 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
427 before_exit(thread); | |
428 vm_exit(code); | |
429 JVM_END | |
430 | |
431 | |
432 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
433 register_on_exit_function(func); | |
434 JVM_END | |
435 | |
436 | |
437 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
438 JVMWrapper("JVM_GC"); | |
439 if (!DisableExplicitGC) { | |
440 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
441 } | |
442 JVM_END | |
443 | |
444 | |
445 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
446 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
447 return Universe::heap()->millis_since_last_gc(); | |
448 JVM_END | |
449 | |
450 | |
451 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
452 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
453 JVM_END | |
454 | |
455 | |
456 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
457 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
458 JVM_END | |
459 | |
460 static inline jlong convert_size_t_to_jlong(size_t val) { | |
461 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
462 NOT_LP64 (return (jlong)val;) | |
463 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
464 } | |
465 | |
466 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
467 JVMWrapper("JVM_TotalMemory"); | |
468 size_t n = Universe::heap()->capacity(); | |
469 return convert_size_t_to_jlong(n); | |
470 JVM_END | |
471 | |
472 | |
473 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
474 JVMWrapper("JVM_FreeMemory"); | |
475 CollectedHeap* ch = Universe::heap(); | |
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476 size_t n; |
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477 { |
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478 MutexLocker x(Heap_lock); |
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479 n = ch->capacity() - ch->used(); |
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480 } |
0 | 481 return convert_size_t_to_jlong(n); |
482 JVM_END | |
483 | |
484 | |
485 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
486 JVMWrapper("JVM_MaxMemory"); | |
487 size_t n = Universe::heap()->max_capacity(); | |
488 return convert_size_t_to_jlong(n); | |
489 JVM_END | |
490 | |
491 | |
492 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
493 JVMWrapper("JVM_ActiveProcessorCount"); | |
494 return os::active_processor_count(); | |
495 JVM_END | |
496 | |
497 | |
498 | |
499 // java.lang.Throwable ////////////////////////////////////////////////////// | |
500 | |
501 | |
502 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
503 JVMWrapper("JVM_FillInStackTrace"); | |
504 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
505 java_lang_Throwable::fill_in_stack_trace(exception); | |
506 JVM_END | |
507 | |
508 | |
509 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
510 JVMWrapper("JVM_GetStackTraceDepth"); | |
511 oop exception = JNIHandles::resolve(throwable); | |
512 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
513 JVM_END | |
514 | |
515 | |
516 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
517 JVMWrapper("JVM_GetStackTraceElement"); | |
518 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
519 oop exception = JNIHandles::resolve(throwable); | |
520 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
521 return JNIHandles::make_local(env, element); | |
522 JVM_END | |
523 | |
524 | |
525 // java.lang.Object /////////////////////////////////////////////// | |
526 | |
527 | |
528 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
529 JVMWrapper("JVM_IHashCode"); | |
530 // as implemented in the classic virtual machine; return 0 if object is NULL | |
531 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
532 JVM_END | |
533 | |
534 | |
535 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
536 JVMWrapper("JVM_MonitorWait"); | |
537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
538 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
539 if (JvmtiExport::should_post_monitor_wait()) { | |
540 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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541 |
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542 // The current thread already owns the monitor and it has not yet |
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543 // been added to the wait queue so the current thread cannot be |
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544 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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545 // event handler cannot accidentally consume an unpark() meant for |
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546 // the ParkEvent associated with this ObjectMonitor. |
0 | 547 } |
548 ObjectSynchronizer::wait(obj, ms, CHECK); | |
549 JVM_END | |
550 | |
551 | |
552 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
553 JVMWrapper("JVM_MonitorNotify"); | |
554 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
555 ObjectSynchronizer::notify(obj, CHECK); | |
556 JVM_END | |
557 | |
558 | |
559 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
560 JVMWrapper("JVM_MonitorNotifyAll"); | |
561 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
562 ObjectSynchronizer::notifyall(obj, CHECK); | |
563 JVM_END | |
564 | |
565 | |
566 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
567 JVMWrapper("JVM_Clone"); | |
568 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
569 const KlassHandle klass (THREAD, obj->klass()); | |
570 JvmtiVMObjectAllocEventCollector oam; | |
571 | |
572 #ifdef ASSERT | |
573 // Just checking that the cloneable flag is set correct | |
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574 if (obj->is_array()) { |
0 | 575 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
576 } else { | |
577 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 578 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 579 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
580 } | |
581 #endif | |
582 | |
583 // Check if class of obj supports the Cloneable interface. | |
584 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
585 if (!klass->is_cloneable()) { | |
586 ResourceMark rm(THREAD); | |
587 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
588 } | |
589 | |
590 // Make shallow object copy | |
591 const int size = obj->size(); | |
592 oop new_obj = NULL; | |
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593 if (obj->is_array()) { |
0 | 594 const int length = ((arrayOop)obj())->length(); |
595 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
596 } else { | |
597 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
598 } | |
599 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
600 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
601 // be suspended in the middle of copying the pointer and end up with parts | |
602 // of two different pointers in the field. Subsequent dereferences will crash. | |
603 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
604 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
605 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
606 // The same is true of StubRoutines::object_copy and the various oop_copy | |
607 // variants, and of the code generated by the inline_native_clone intrinsic. | |
608 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
609 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
610 (size_t)align_object_size(size) / HeapWordsPerLong); | |
611 // Clear the header | |
612 new_obj->init_mark(); | |
613 | |
614 // Store check (mark entire object and let gc sort it out) | |
615 BarrierSet* bs = Universe::heap()->barrier_set(); | |
616 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
617 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
618 | |
619 // Caution: this involves a java upcall, so the clone should be | |
620 // "gc-robust" by this stage. | |
621 if (klass->has_finalizer()) { | |
622 assert(obj->is_instance(), "should be instanceOop"); | |
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623 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 624 } |
625 | |
626 return JNIHandles::make_local(env, oop(new_obj)); | |
627 JVM_END | |
628 | |
629 // java.lang.Compiler //////////////////////////////////////////////////// | |
630 | |
631 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
632 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
633 // functions are all silently ignored unless JVM warnings are printed. | |
634 | |
635 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
636 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
637 JVM_END | |
638 | |
639 | |
640 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
641 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
642 return JNI_FALSE; | |
643 JVM_END | |
644 | |
645 | |
646 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
647 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
648 return JNI_FALSE; | |
649 JVM_END | |
650 | |
651 | |
652 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
653 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
654 return JNI_FALSE; | |
655 JVM_END | |
656 | |
657 | |
658 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
659 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
660 return NULL; | |
661 JVM_END | |
662 | |
663 | |
664 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
665 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
666 JVM_END | |
667 | |
668 | |
669 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
670 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
671 JVM_END | |
672 | |
673 | |
674 | |
675 // Error message support ////////////////////////////////////////////////////// | |
676 | |
677 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
678 JVMWrapper("JVM_GetLastErrorString"); | |
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679 return (jint)os::lasterror(buf, len); |
0 | 680 JVM_END |
681 | |
682 | |
683 // java.io.File /////////////////////////////////////////////////////////////// | |
684 | |
685 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
686 JVMWrapper2("JVM_NativePath (%s)", path); | |
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687 return os::native_path(path); |
0 | 688 JVM_END |
689 | |
690 | |
691 // Misc. class handling /////////////////////////////////////////////////////////// | |
692 | |
693 | |
694 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
695 JVMWrapper("JVM_GetCallerClass"); | |
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696 |
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697 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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698 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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699 // temporarily for existing code to use until a replacement API is defined. |
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700 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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701 Klass* k = thread->security_get_caller_class(depth); |
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702 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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703 } |
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704 |
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705 // Getting the class of the caller frame. |
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706 // |
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707 // The call stack at this point looks something like this: |
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708 // |
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709 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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710 // [1] [ @CallerSensitive API.method ] |
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711 // [.] [ (skipped intermediate frames) ] |
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712 // [n] [ caller ] |
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713 vframeStream vfst(thread); |
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714 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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715 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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716 Method* m = vfst.method(); |
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717 assert(m != NULL, "sanity"); |
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718 switch (n) { |
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719 case 0: |
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720 // This must only be called from Reflection.getCallerClass |
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721 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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722 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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723 } |
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724 // fall-through |
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725 case 1: |
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726 // Frame 0 and 1 must be caller sensitive. |
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727 if (!m->caller_sensitive()) { |
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728 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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729 } |
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730 break; |
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731 default: |
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732 if (!m->is_ignored_by_security_stack_walk()) { |
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733 // We have reached the desired frame; return the holder class. |
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734 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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735 } |
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736 break; |
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737 } |
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738 } |
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739 return NULL; |
0 | 740 JVM_END |
741 | |
742 | |
743 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
744 JVMWrapper("JVM_FindPrimitiveClass"); | |
745 oop mirror = NULL; | |
746 BasicType t = name2type(utf); | |
747 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
748 mirror = Universe::java_mirror(t); | |
749 } | |
750 if (mirror == NULL) { | |
751 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
752 } else { | |
753 return (jclass) JNIHandles::make_local(env, mirror); | |
754 } | |
755 JVM_END | |
756 | |
757 | |
758 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
759 JVMWrapper("JVM_ResolveClass"); | |
760 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
761 JVM_END | |
762 | |
878
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763 |
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764 // Returns a class loaded by the bootstrap class loader; or null |
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765 // if not found. ClassNotFoundException is not thrown. |
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766 // |
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767 // Rationale behind JVM_FindClassFromBootLoader |
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768 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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769 // b> because of (a) java.dll has a direct dependecy on the unexported |
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770 // private symbol "_JVM_FindClassFromClassLoader@20". |
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771 // c> the launcher cannot use the private symbol as it dynamically opens |
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772 // the entry point, so if something changes, the launcher will fail |
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773 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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774 // stable exported interface. |
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775 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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776 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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777 // JVM_FindClassFromClassLoader and will not be backward compatible |
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778 // with older JDKs. |
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779 // Thus a public/stable exported entry point is the right solution, |
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780 // public here means public in linker semantics, and is exported only |
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781 // to the JDK, and is not intended to be a public API. |
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782 |
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783 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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784 const char* name)) |
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785 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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786 |
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787 // Java libraries should ensure that name is never null... |
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788 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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789 // It's impossible to create this class; the name cannot fit |
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790 // into the constant pool. |
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791 return NULL; |
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792 } |
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793 |
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794 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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795 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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796 if (k == NULL) { |
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797 return NULL; |
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798 } |
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799 |
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800 if (TraceClassResolution) { |
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801 trace_class_resolution(k); |
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802 } |
6983 | 803 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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804 JVM_END |
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805 |
18051 | 806 // Not used; JVM_FindClassFromCaller replaces this. |
878
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807 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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808 jboolean init, jobject loader, |
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809 jboolean throwError)) |
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810 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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811 throwError ? "error" : "exception"); |
388 | 812 // Java libraries should ensure that name is never null... |
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813 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 814 // It's impossible to create this class; the name cannot fit |
815 // into the constant pool. | |
816 if (throwError) { | |
817 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
818 } else { | |
819 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
820 } | |
821 } | |
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822 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 823 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
824 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
825 Handle(), throwError, THREAD); | |
826 | |
827 if (TraceClassResolution && result != NULL) { | |
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828 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 829 } |
830 return result; | |
0 | 831 JVM_END |
832 | |
18051 | 833 // Find a class with this name in this loader, using the caller's protection domain. |
834 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
835 jboolean init, jobject loader, | |
836 jclass caller)) | |
837 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
838 // Java libraries should ensure that name is never null... | |
839 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
840 // It's impossible to create this class; the name cannot fit | |
841 // into the constant pool. | |
842 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
843 } | |
844 | |
845 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
846 | |
847 oop loader_oop = JNIHandles::resolve(loader); | |
848 oop from_class = JNIHandles::resolve(caller); | |
849 oop protection_domain = NULL; | |
850 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
851 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
852 // thus no checkPackageAccess equivalence in the VM class loader. | |
853 // The caller is also passed as NULL by the java code if there is no security | |
854 // manager to avoid the performance cost of getting the calling class. | |
855 if (from_class != NULL && loader_oop != NULL) { | |
856 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
857 } | |
858 | |
859 Handle h_loader(THREAD, loader_oop); | |
860 Handle h_prot(THREAD, protection_domain); | |
861 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
862 h_prot, false, THREAD); | |
863 | |
864 if (TraceClassResolution && result != NULL) { | |
865 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
866 } | |
867 return result; | |
868 JVM_END | |
0 | 869 |
870 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
871 jboolean init, jclass from)) | |
872 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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873 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 874 // It's impossible to create this class; the name cannot fit |
875 // into the constant pool. | |
876 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
877 } | |
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878 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 879 oop from_class_oop = JNIHandles::resolve(from); |
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880 Klass* from_class = (from_class_oop == NULL) |
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881 ? (Klass*)NULL |
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882 : java_lang_Class::as_Klass(from_class_oop); |
0 | 883 oop class_loader = NULL; |
884 oop protection_domain = NULL; | |
885 if (from_class != NULL) { | |
6983 | 886 class_loader = from_class->class_loader(); |
887 protection_domain = from_class->protection_domain(); | |
0 | 888 } |
889 Handle h_loader(THREAD, class_loader); | |
890 Handle h_prot (THREAD, protection_domain); | |
891 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
892 h_prot, true, thread); | |
893 | |
894 if (TraceClassResolution && result != NULL) { | |
895 // this function is generally only used for class loading during verification. | |
896 ResourceMark rm; | |
897 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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898 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 899 const char * from_name = from_class->external_name(); |
0 | 900 |
901 oop mirror = JNIHandles::resolve_non_null(result); | |
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902 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 903 const char * to = to_class->external_name(); |
0 | 904 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
905 } | |
906 | |
907 return result; | |
908 JVM_END | |
909 | |
910 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
911 if (loader.is_null()) { | |
912 return; | |
913 } | |
914 | |
915 // check whether the current caller thread holds the lock or not. | |
916 // If not, increment the corresponding counter | |
917 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
918 ObjectSynchronizer::owner_self) { | |
919 counter->inc(); | |
920 } | |
921 } | |
922 | |
923 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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924 // and JVM_DefineClassWithSourceCond() |
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925 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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926 jobject loader, const jbyte *buf, |
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927 jsize len, jobject pd, const char *source, |
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928 jboolean verify, TRAPS) { |
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929 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 930 |
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931 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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932 JavaThread* jt = (JavaThread*) THREAD; |
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933 |
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934 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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935 ClassLoader::perf_define_appclass_selftime(), |
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936 ClassLoader::perf_define_appclasses(), |
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937 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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938 jt->get_thread_stat()->perf_timers_addr(), |
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939 PerfClassTraceTime::DEFINE_CLASS); |
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940 |
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941 if (UsePerfData) { |
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942 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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943 } |
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944 |
0 | 945 // Since exceptions can be thrown, class initialization can take place |
946 // if name is NULL no check for class name in .class stream has to be made. | |
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947 TempNewSymbol class_name = NULL; |
0 | 948 if (name != NULL) { |
949 const int str_len = (int)strlen(name); | |
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950 if (str_len > Symbol::max_length()) { |
0 | 951 // It's impossible to create this class; the name cannot fit |
952 // into the constant pool. | |
953 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
954 } | |
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955 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 956 } |
957 | |
958 ResourceMark rm(THREAD); | |
959 ClassFileStream st((u1*) buf, len, (char *)source); | |
960 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
961 if (UsePerfData) { | |
962 is_lock_held_by_thread(class_loader, | |
963 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
964 THREAD); | |
965 } | |
966 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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967 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 968 protection_domain, &st, |
973
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969 verify != 0, |
0 | 970 CHECK_NULL); |
971 | |
972 if (TraceClassResolution && k != NULL) { | |
973 trace_class_resolution(k); | |
974 } | |
975 | |
6983 | 976 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 977 } |
978 | |
979 | |
980 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
981 JVMWrapper2("JVM_DefineClass %s", name); | |
982 | |
973
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983 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 984 JVM_END |
985 | |
986 | |
987 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
988 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
989 | |
973
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990 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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991 JVM_END |
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992 |
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993 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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994 jobject loader, const jbyte *buf, |
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995 jsize len, jobject pd, |
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996 const char *source, jboolean verify)) |
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997 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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998 |
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999 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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1000 JVM_END |
0 | 1001 |
1002 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
1003 JVMWrapper("JVM_FindLoadedClass"); | |
1004 ResourceMark rm(THREAD); | |
1005 | |
1006 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
1007 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
1008 | |
1009 const char* str = java_lang_String::as_utf8_string(string()); | |
1010 // Sanity check, don't expect null | |
1011 if (str == NULL) return NULL; | |
1012 | |
1013 const int str_len = (int)strlen(str); | |
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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 return NULL; | |
1018 } | |
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1019 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 1020 |
1021 // Security Note: | |
1022 // The Java level wrapper will perform the necessary security check allowing | |
1023 // us to pass the NULL as the initiating class loader. | |
1024 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
1025 if (UsePerfData) { | |
1026 is_lock_held_by_thread(h_loader, | |
1027 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
1028 THREAD); | |
1029 } | |
1030 | |
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1031 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 1032 h_loader, |
1033 Handle(), | |
1034 CHECK_NULL); | |
1035 | |
1036 return (k == NULL) ? NULL : | |
6983 | 1037 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1038 JVM_END |
1039 | |
1040 | |
1041 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
1042 | |
1043 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
1044 assert (cls != NULL, "illegal class"); | |
1045 JVMWrapper("JVM_GetClassName"); | |
1046 JvmtiVMObjectAllocEventCollector oam; | |
1047 ResourceMark rm(THREAD); | |
1048 const char* name; | |
1049 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1050 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
1051 } else { | |
1052 // Consider caching interned string in Klass | |
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1053 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1054 assert(k->is_klass(), "just checking"); |
6983 | 1055 name = k->external_name(); |
0 | 1056 } |
1057 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1058 return (jstring) JNIHandles::make_local(env, result); | |
1059 JVM_END | |
1060 | |
1061 | |
1062 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1063 JVMWrapper("JVM_GetClassInterfaces"); | |
1064 JvmtiVMObjectAllocEventCollector oam; | |
1065 oop mirror = JNIHandles::resolve_non_null(cls); | |
1066 | |
1067 // Special handling for primitive objects | |
1068 if (java_lang_Class::is_primitive(mirror)) { | |
1069 // Primitive objects does not have any interfaces | |
1142 | 1070 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1071 return (jobjectArray) JNIHandles::make_local(env, r); |
1072 } | |
1073 | |
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1074 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1075 // Figure size of result array |
1076 int size; | |
1077 if (klass->oop_is_instance()) { | |
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1078 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1079 } else { |
1080 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1081 size = 2; | |
1082 } | |
1083 | |
1084 // Allocate result array | |
1142 | 1085 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1086 objArrayHandle result (THREAD, r); |
1087 // Fill in result | |
1088 if (klass->oop_is_instance()) { | |
1089 // Regular instance klass, fill in all local interfaces | |
1090 for (int index = 0; index < size; index++) { | |
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1091 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1092 result->obj_at_put(index, k->java_mirror()); |
0 | 1093 } |
1094 } else { | |
1095 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1096 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1097 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1098 } |
1099 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1100 JVM_END | |
1101 | |
1102 | |
1103 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1104 JVMWrapper("JVM_GetClassLoader"); | |
1105 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1106 return NULL; | |
1107 } | |
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1108 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1109 oop loader = k->class_loader(); |
0 | 1110 return JNIHandles::make_local(env, loader); |
1111 JVM_END | |
1112 | |
1113 | |
1114 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1115 JVMWrapper("JVM_IsInterface"); | |
1116 oop mirror = JNIHandles::resolve_non_null(cls); | |
1117 if (java_lang_Class::is_primitive(mirror)) { | |
1118 return JNI_FALSE; | |
1119 } | |
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1120 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1121 jboolean result = k->is_interface(); |
1122 assert(!result || k->oop_is_instance(), | |
0 | 1123 "all interfaces are instance types"); |
1124 // The compiler intrinsic for isInterface tests the | |
1125 // Klass::_access_flags bits in the same way. | |
1126 return result; | |
1127 JVM_END | |
1128 | |
1129 | |
1130 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1131 JVMWrapper("JVM_GetClassSigners"); | |
1132 JvmtiVMObjectAllocEventCollector oam; | |
1133 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1134 // There are no signers for primitive types | |
1135 return NULL; | |
1136 } | |
1137 | |
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1138 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1139 |
1140 // If there are no signers set in the class, or if the class | |
1141 // is an array, return NULL. | |
1142 if (signers == NULL) return NULL; | |
1143 | |
1144 // copy of the signers array | |
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1145 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1146 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1147 for (int index = 0; index < signers->length(); index++) { | |
1148 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1149 } | |
1150 | |
1151 // return the copy | |
1152 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1153 JVM_END | |
1154 | |
1155 | |
1156 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1157 JVMWrapper("JVM_SetClassSigners"); | |
1158 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1159 // This call is ignored for primitive types and arrays. | |
1160 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1161 // be called with an array. Only the bootstrap loader creates arrays. | |
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1162 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1163 if (k->oop_is_instance()) { |
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1164 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1165 } |
1166 } | |
1167 JVM_END | |
1168 | |
1169 | |
1170 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1171 JVMWrapper("JVM_GetProtectionDomain"); | |
1172 if (JNIHandles::resolve(cls) == NULL) { | |
1173 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1174 } | |
1175 | |
1176 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1177 // Primitive types does not have a protection domain. | |
1178 return NULL; | |
1179 } | |
1180 | |
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1181 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1182 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1183 JVM_END |
1184 | |
1185 | |
11010 | 1186 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1187 // If there is a security manager and protection domain, check the access | |
1188 // in the protection domain, otherwise it is authorized. | |
1189 if (java_lang_System::has_security_manager()) { | |
1190 | |
1191 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1192 // this context to revert to older behavior. | |
1193 // In this case the isAuthorized field in AccessControlContext is also not | |
1194 // present. | |
1195 if (Universe::protection_domain_implies_method() == NULL) { | |
1196 return true; | |
1197 } | |
1198 | |
1199 // Whitelist certain access control contexts | |
1200 if (java_security_AccessControlContext::is_authorized(context)) { | |
1201 return true; | |
1202 } | |
1203 | |
1204 oop prot = klass->protection_domain(); | |
1205 if (prot != NULL) { | |
1206 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1207 // in the new wrapper. | |
1208 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1209 Handle h_prot(THREAD, prot); | |
1210 JavaValue result(T_BOOLEAN); | |
1211 JavaCallArguments args(h_prot); | |
1212 JavaCalls::call(&result, m, &args, CHECK_false); | |
1213 return (result.get_jboolean() != 0); | |
1214 } | |
1215 } | |
1216 return true; | |
1217 } | |
1218 | |
1219 // Create an AccessControlContext with a protection domain with null codesource | |
1220 // and null permissions - which gives no permissions. | |
1221 oop create_dummy_access_control_context(TRAPS) { | |
1222 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1223 // new ProtectionDomain(null,null); | |
1224 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1225 Handle null_pd(THREAD, null_protection_domain); | |
1226 | |
1227 // new ProtectionDomain[] {pd}; | |
1228 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1229 context->obj_at_put(0, null_pd()); | |
1230 | |
1231 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1232 objArrayHandle h_context(THREAD, context); | |
1233 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1234 return result; | |
1235 } | |
0 | 1236 |
1237 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1238 JVMWrapper("JVM_DoPrivileged"); | |
1239 | |
1240 if (action == NULL) { | |
1241 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1242 } | |
1243 | |
11010 | 1244 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1245 vframeStream vfst(thread); | |
1246 vfst.security_get_caller_frame(1); | |
1247 | |
1248 if (vfst.at_end()) { | |
1249 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1250 } | |
1251 | |
1252 Method* method = vfst.method(); | |
1253 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1254 | |
1255 // Check that action object understands "Object run()" | |
1256 Handle h_context; | |
1257 if (context != NULL) { | |
1258 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1259 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1260 if (!authorized) { | |
1261 // Create an unprivileged access control object and call it's run function | |
1262 // instead. | |
1263 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1264 h_context = Handle(THREAD, noprivs); | |
1265 } | |
1266 } | |
0 | 1267 |
1268 // Check that action object understands "Object run()" | |
1269 Handle object (THREAD, JNIHandles::resolve(action)); | |
1270 | |
1271 // get run() method | |
6983 | 1272 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1273 vmSymbols::run_method_name(), |
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1274 vmSymbols::void_object_signature(), |
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1275 Klass::normal); |
0 | 1276 methodHandle m (THREAD, m_oop); |
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1277 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1278 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1279 } | |
1280 | |
11010 | 1281 // Stack allocated list of privileged stack elements |
1282 PrivilegedElement pi; | |
0 | 1283 if (!vfst.at_end()) { |
11010 | 1284 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1285 thread->set_privileged_stack_top(&pi); |
1286 } | |
1287 | |
1288 | |
1289 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1290 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1291 Handle pending_exception; | |
1292 JavaValue result(T_OBJECT); | |
1293 JavaCallArguments args(object); | |
1294 JavaCalls::call(&result, m, &args, THREAD); | |
1295 | |
1296 // done with action, remove ourselves from the list | |
1297 if (!vfst.at_end()) { | |
1298 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1299 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1300 } | |
1301 | |
1302 if (HAS_PENDING_EXCEPTION) { | |
1303 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1304 CLEAR_PENDING_EXCEPTION; | |
1305 | |
1142 | 1306 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1307 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1308 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1309 JavaCallArguments args(pending_exception); | |
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1310 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1311 vmSymbols::exception_void_signature(), |
0 | 1312 &args); |
1313 } | |
1314 } | |
1315 | |
1316 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1317 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1318 JVM_END | |
1319 | |
1320 | |
1321 // Returns the inherited_access_control_context field of the running thread. | |
1322 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1323 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1324 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1325 return JNIHandles::make_local(env, result); | |
1326 JVM_END | |
1327 | |
1328 class RegisterArrayForGC { | |
1329 private: | |
1330 JavaThread *_thread; | |
1331 public: | |
1332 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1333 _thread = thread; | |
1334 _thread->register_array_for_gc(array); | |
1335 } | |
1336 | |
1337 ~RegisterArrayForGC() { | |
1338 _thread->register_array_for_gc(NULL); | |
1339 } | |
1340 }; | |
1341 | |
1342 | |
1343 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1344 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1345 if (!UsePrivilegedStack) return NULL; | |
1346 | |
1347 ResourceMark rm(THREAD); | |
1348 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1349 JvmtiVMObjectAllocEventCollector oam; | |
1350 | |
1351 // count the protection domains on the execution stack. We collapse | |
1352 // duplicate consecutive protection domains into a single one, as | |
1353 // well as stopping when we hit a privileged frame. | |
1354 | |
1355 // Use vframeStream to iterate through Java frames | |
1356 vframeStream vfst(thread); | |
1357 | |
1358 oop previous_protection_domain = NULL; | |
1359 Handle privileged_context(thread, NULL); | |
1360 bool is_privileged = false; | |
1361 oop protection_domain = NULL; | |
1362 | |
1363 for(; !vfst.at_end(); vfst.next()) { | |
1364 // get method of frame | |
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1365 Method* method = vfst.method(); |
0 | 1366 intptr_t* frame_id = vfst.frame_id(); |
1367 | |
1368 // check the privileged frames to see if we have a match | |
1369 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1370 // this frame is privileged | |
1371 is_privileged = true; | |
1372 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1373 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1374 } else { | |
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1375 protection_domain = method->method_holder()->protection_domain(); |
0 | 1376 } |
1377 | |
1378 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1379 local_array->push(protection_domain); | |
1380 previous_protection_domain = protection_domain; | |
1381 } | |
1382 | |
1383 if (is_privileged) break; | |
1384 } | |
1385 | |
1386 | |
1387 // either all the domains on the stack were system domains, or | |
1388 // we had a privileged system domain | |
1389 if (local_array->is_empty()) { | |
1390 if (is_privileged && privileged_context.is_null()) return NULL; | |
1391 | |
1392 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1393 return JNIHandles::make_local(env, result); | |
1394 } | |
1395 | |
1396 // the resource area must be registered in case of a gc | |
1397 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1398 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1399 local_array->length(), CHECK_NULL); |
1400 objArrayHandle h_context(thread, context); | |
1401 for (int index = 0; index < local_array->length(); index++) { | |
1402 h_context->obj_at_put(index, local_array->at(index)); | |
1403 } | |
1404 | |
1405 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1406 | |
1407 return JNIHandles::make_local(env, result); | |
1408 JVM_END | |
1409 | |
1410 | |
1411 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1412 JVMWrapper("JVM_IsArrayClass"); | |
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1413 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1414 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1415 JVM_END |
1416 | |
1417 | |
1418 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1419 JVMWrapper("JVM_IsPrimitiveClass"); | |
1420 oop mirror = JNIHandles::resolve_non_null(cls); | |
1421 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1422 JVM_END | |
1423 | |
1424 | |
1425 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1426 JVMWrapper("JVM_GetComponentType"); | |
1427 oop mirror = JNIHandles::resolve_non_null(cls); | |
1428 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1429 return (jclass) JNIHandles::make_local(env, result); | |
1430 JVM_END | |
1431 | |
1432 | |
1433 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1434 JVMWrapper("JVM_GetClassModifiers"); | |
1435 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1436 // Primitive type | |
1437 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1438 } | |
1439 | |
6983 | 1440 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1441 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1442 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1443 return k->modifier_flags(); | |
1444 JVM_END | |
1445 | |
1446 | |
1447 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1448 | |
1449 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1450 JvmtiVMObjectAllocEventCollector oam; | |
1451 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1452 // of an InstanceKlass |
0 | 1453 |
1454 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1455 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1456 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1457 return (jobjectArray)JNIHandles::make_local(env, result); |
1458 } | |
1459 | |
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1460 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1461 InnerClassesIterator iter(k); |
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1462 |
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1463 if (iter.length() == 0) { |
0 | 1464 // Neither an inner nor outer class |
1142 | 1465 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1466 return (jobjectArray)JNIHandles::make_local(env, result); |
1467 } | |
1468 | |
1469 // find inner class info | |
1470 constantPoolHandle cp(thread, k->constants()); | |
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1471 int length = iter.length(); |
0 | 1472 |
1473 // Allocate temp. result array | |
1142 | 1474 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1475 objArrayHandle result (THREAD, r); |
1476 int members = 0; | |
1477 | |
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1478 for (; !iter.done(); iter.next()) { |
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1479 int ioff = iter.inner_class_info_index(); |
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1480 int ooff = iter.outer_class_info_index(); |
0 | 1481 |
1482 if (ioff != 0 && ooff != 0) { | |
1483 // Check to see if the name matches the class we're looking for | |
1484 // before attempting to find the class. | |
1485 if (cp->klass_name_at_matches(k, ooff)) { | |
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1486 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1487 if (outer_klass == k()) { |
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1488 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1489 instanceKlassHandle inner_klass (THREAD, ik); |
1490 | |
1491 // Throws an exception if outer klass has not declared k as | |
1492 // an inner klass | |
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1493 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1494 |
1495 result->obj_at_put(members, inner_klass->java_mirror()); | |
1496 members++; | |
1497 } | |
1498 } | |
1499 } | |
1500 } | |
1501 | |
1502 if (members != length) { | |
1503 // Return array of right length | |
1142 | 1504 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1505 for(int i = 0; i < members; i++) { |
1506 res->obj_at_put(i, result->obj_at(i)); | |
1507 } | |
1508 return (jobjectArray)JNIHandles::make_local(env, res); | |
1509 } | |
1510 | |
1511 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1512 JVM_END | |
1513 | |
1514 | |
1515 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1516 { |
0 | 1517 // ofClass is a reference to a java_lang_Class object. |
1518 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1519 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1520 return NULL; |
1521 } | |
1522 | |
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1523 bool inner_is_member = false; |
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1524 Klass* outer_klass |
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1525 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1526 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1527 if (outer_klass == NULL) return NULL; // already a top-level class |
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1528 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1529 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1530 } |
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1531 JVM_END |
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1532 |
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1533 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1534 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1535 bool* inner_is_member, |
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1536 TRAPS) { |
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1537 Thread* thread = THREAD; |
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1538 InnerClassesIterator iter(k); |
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1539 if (iter.length() == 0) { |
0 | 1540 // No inner class info => no declaring class |
1541 return NULL; | |
1542 } | |
1543 | |
1544 constantPoolHandle i_cp(thread, k->constants()); | |
1545 | |
1546 bool found = false; | |
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1547 Klass* ok; |
0 | 1548 instanceKlassHandle outer_klass; |
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1549 *inner_is_member = false; |
0 | 1550 |
1551 // Find inner_klass attribute | |
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1552 for (; !iter.done() && !found; iter.next()) { |
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1553 int ioff = iter.inner_class_info_index(); |
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1554 int ooff = iter.outer_class_info_index(); |
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1555 int noff = iter.inner_name_index(); |
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1556 if (ioff != 0) { |
0 | 1557 // Check to see if the name matches the class we're looking for |
1558 // before attempting to find the class. | |
1559 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1560 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1561 found = (k() == inner_klass); |
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1562 if (found && ooff != 0) { |
0 | 1563 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1564 outer_klass = instanceKlassHandle(thread, ok); | |
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1565 *inner_is_member = true; |
0 | 1566 } |
1567 } | |
1568 } | |
1569 } | |
1570 | |
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1571 if (found && outer_klass.is_null()) { |
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1572 // It may be anonymous; try for that. |
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1573 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1574 if (encl_method_class_idx != 0) { |
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1575 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1576 outer_klass = instanceKlassHandle(thread, ok); |
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1577 *inner_is_member = false; |
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1578 } |
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1579 } |
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1580 |
0 | 1581 // If no inner class attribute found for this class. |
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1582 if (outer_klass.is_null()) return NULL; |
0 | 1583 |
1584 // Throws an exception if outer klass has not declared k as an inner klass | |
665
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1585 // We need evidence that each klass knows about the other, or else |
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1586 // the system could allow a spoof of an inner class to gain access rights. |
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1587 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1588 return outer_klass(); |
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1589 } |
0 | 1590 |
1591 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1592 assert (cls != NULL, "illegal class"); | |
1593 JVMWrapper("JVM_GetClassSignature"); | |
1594 JvmtiVMObjectAllocEventCollector oam; | |
1595 ResourceMark rm(THREAD); | |
1596 // Return null for arrays and primatives | |
1597 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1598 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1599 if (k->oop_is_instance()) { |
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1600 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
2177
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1601 if (sym == NULL) return NULL; |
0 | 1602 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1603 return (jstring) JNIHandles::make_local(env, str()); | |
1604 } | |
1605 } | |
1606 return NULL; | |
1607 JVM_END | |
1608 | |
1609 | |
1610 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1611 assert (cls != NULL, "illegal class"); | |
1612 JVMWrapper("JVM_GetClassAnnotations"); | |
8818
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1613 |
0 | 1614 // Return null for arrays and primitives |
1615 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1616 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1617 if (k->oop_is_instance()) { |
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1618 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1619 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1620 } |
1621 } | |
1622 return NULL; | |
1623 JVM_END | |
1624 | |
1625 | |
8818
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1626 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1627 // some of this code was adapted from from jni_FromReflectedField |
1628 | |
1629 oop reflected = JNIHandles::resolve_non_null(field); | |
1630 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1631 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1632 int slot = java_lang_reflect_Field::slot(reflected); |
1633 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1634 | |
1635 KlassHandle kh(THREAD, k); | |
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1636 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1637 |
1638 if (modifiers & JVM_ACC_STATIC) { | |
1639 // for static fields we only look in the current class | |
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1640 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1641 assert(false, "cannot find static field"); |
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1642 return false; |
0 | 1643 } |
1644 } else { | |
1645 // for instance fields we start with the current class and work | |
1646 // our way up through the superclass chain | |
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1647 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1648 assert(false, "cannot find instance field"); |
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1649 return false; |
0 | 1650 } |
1651 } | |
8818
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|
1652 return true; |
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|
1653 } |
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|
1654 |
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|
1655 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1656 // field is a handle to a java.lang.reflect.Field object |
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|
1657 assert(field != NULL, "illegal field"); |
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|
1658 JVMWrapper("JVM_GetFieldAnnotations"); |
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|
1659 |
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|
1660 fieldDescriptor fd; |
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|
1661 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1662 if (!gotFd) { |
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|
1663 return NULL; |
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|
1664 } |
0 | 1665 |
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1666 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1667 JVM_END |
1668 | |
1669 | |
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|
1670 static Method* jvm_get_method_common(jobject method) { |
0 | 1671 // some of this code was adapted from from jni_FromReflectedMethod |
1672 | |
1673 oop reflected = JNIHandles::resolve_non_null(method); | |
1674 oop mirror = NULL; | |
1675 int slot = 0; | |
1676 | |
1142 | 1677 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1678 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1679 slot = java_lang_reflect_Constructor::slot(reflected); | |
1680 } else { | |
1142 | 1681 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1682 "wrong type"); |
1683 mirror = java_lang_reflect_Method::clazz(reflected); | |
1684 slot = java_lang_reflect_Method::slot(reflected); | |
1685 } | |
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1686 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1687 |
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|
1688 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
8818
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|
1689 assert(m != NULL, "cannot find method"); |
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|
1690 return m; // caller has to deal with NULL in product mode |
0 | 1691 } |
1692 | |
1693 | |
1694 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1695 JVMWrapper("JVM_GetMethodAnnotations"); | |
1696 | |
1697 // method is a handle to a java.lang.reflect.Method object | |
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|
1698 Method* m = jvm_get_method_common(method); |
8818
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|
1699 if (m == NULL) { |
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|
1700 return NULL; |
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|
1701 } |
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|
1702 |
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1703 return (jbyteArray) JNIHandles::make_local(env, |
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1704 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1705 JVM_END |
1706 | |
1707 | |
1708 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1709 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1710 | |
1711 // method is a handle to a java.lang.reflect.Method object | |
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|
1712 Method* m = jvm_get_method_common(method); |
8818
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|
1713 if (m == NULL) { |
1916ca1dec2f
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|
1714 return NULL; |
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|
1715 } |
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|
1716 |
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|
1717 return (jbyteArray) JNIHandles::make_local(env, |
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|
1718 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1719 JVM_END |
1720 | |
1721 | |
1722 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1723 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1724 | |
1725 // method is a handle to a java.lang.reflect.Method object | |
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|
1726 Method* m = jvm_get_method_common(method); |
8818
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|
1727 if (m == NULL) { |
1916ca1dec2f
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|
1728 return NULL; |
1916ca1dec2f
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|
1729 } |
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|
1730 |
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|
1731 return (jbyteArray) JNIHandles::make_local(env, |
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1732 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1733 JVM_END |
1734 | |
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|
1735 /* Type use annotations support (JDK 1.8) */ |
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|
1736 |
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|
1737 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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|
1738 assert (cls != NULL, "illegal class"); |
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|
1739 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1740 ResourceMark rm(THREAD); |
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|
1741 // Return null for arrays and primitives |
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|
1742 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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|
1743 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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|
1744 if (k->oop_is_instance()) { |
8031 | 1745 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
7611
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|
1746 if (type_annotations != NULL) { |
8031 | 1747 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
7611
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|
1748 return (jbyteArray) JNIHandles::make_local(env, a); |
ff0a7943fd29
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|
1749 } |
7457
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|
1750 } |
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|
1751 } |
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|
1752 return NULL; |
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|
1753 JVM_END |
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|
1754 |
8818
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|
1755 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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|
1756 assert (method != NULL, "illegal method"); |
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changeset
|
1757 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1758 |
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|
1759 // method is a handle to a java.lang.reflect.Method object |
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changeset
|
1760 Method* m = jvm_get_method_common(method); |
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changeset
|
1761 if (m == NULL) { |
1916ca1dec2f
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changeset
|
1762 return NULL; |
1916ca1dec2f
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changeset
|
1763 } |
1916ca1dec2f
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|
1764 |
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|
1765 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1766 if (type_annotations != NULL) { |
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|
1767 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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|
1768 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1769 } |
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|
1770 |
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|
1771 return NULL; |
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|
1772 JVM_END |
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|
1773 |
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|
1774 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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changeset
|
1775 assert (field != NULL, "illegal field"); |
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changeset
|
1776 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1777 |
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changeset
|
1778 fieldDescriptor fd; |
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changeset
|
1779 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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changeset
|
1780 if (!gotFd) { |
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|
1781 return NULL; |
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1782 } |
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1783 |
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1784 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1785 JVM_END |
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1786 |
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1787 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1788 if (!cp->is_within_bounds(index)) { |
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1789 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1790 } |
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1791 } |
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1792 |
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1793 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1794 { |
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1795 JVMWrapper("JVM_GetMethodParameters"); |
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1796 // method is a handle to a java.lang.reflect.Method object |
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1797 Method* method_ptr = jvm_get_method_common(method); |
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1798 methodHandle mh (THREAD, method_ptr); |
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1799 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1800 const int num_params = mh->method_parameters_length(); |
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1801 |
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1802 if (0 != num_params) { |
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1803 // make sure all the symbols are properly formatted |
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1804 for (int i = 0; i < num_params; i++) { |
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1805 MethodParametersElement* params = mh->method_parameters_start(); |
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1806 int index = params[i].name_cp_index; |
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1807 bounds_check(mh->constants(), index, CHECK_NULL); |
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1808 |
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1809 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1810 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1811 "Wrong type at constant pool index"); |
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1812 } |
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1813 |
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1814 } |
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1815 |
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1816 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1817 objArrayHandle result (THREAD, result_oop); |
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1818 |
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1819 for (int i = 0; i < num_params; i++) { |
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1820 MethodParametersElement* params = mh->method_parameters_start(); |
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1821 // For a 0 index, give a NULL symbol |
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1822 Symbol* sym = 0 != params[i].name_cp_index ? |
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1823 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1824 int flags = params[i].flags; |
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1825 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1826 flags, CHECK_NULL); |
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1827 result->obj_at_put(i, param); |
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1828 } |
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1829 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1830 } else { |
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1831 return (jobjectArray)NULL; |
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1832 } |
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1833 } |
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1834 JVM_END |
0 | 1835 |
1836 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1837 | |
1838 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1839 { | |
1840 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1841 JvmtiVMObjectAllocEventCollector oam; | |
1842 | |
1843 // Exclude primitive types and array types | |
1844 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1845 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1846 // Return empty array |
1142 | 1847 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1848 return (jobjectArray) JNIHandles::make_local(env, res); |
1849 } | |
1850 | |
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1851 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1852 constantPoolHandle cp(THREAD, k->constants()); |
1853 | |
1854 // Ensure class is linked | |
1855 k->link_class(CHECK_NULL); | |
1856 | |
1857 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1858 bool skip_backtrace = false; | |
1859 | |
1860 // Allocate result | |
1861 int num_fields; | |
1862 | |
1863 if (publicOnly) { | |
1864 num_fields = 0; | |
3938 | 1865 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1866 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1867 } |
1868 } else { | |
3938 | 1869 num_fields = k->java_fields_count(); |
0 | 1870 |
1142 | 1871 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1872 num_fields--; |
1873 skip_backtrace = true; | |
1874 } | |
1875 } | |
1876 | |
1142 | 1877 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1878 objArrayHandle result (THREAD, r); |
1879 | |
1880 int out_idx = 0; | |
1881 fieldDescriptor fd; | |
3938 | 1882 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1883 if (skip_backtrace) { |
1884 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1885 int offset = fs.offset(); |
0 | 1886 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1887 } | |
1888 | |
3938 | 1889 if (!publicOnly || fs.access_flags().is_public()) { |
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1890 fd.reinitialize(k(), fs.index()); |
0 | 1891 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1892 result->obj_at_put(out_idx, field); | |
1893 ++out_idx; | |
1894 } | |
1895 } | |
1896 assert(out_idx == num_fields, "just checking"); | |
1897 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1898 } | |
1899 JVM_END | |
1900 | |
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1901 static bool select_method(methodHandle method, bool want_constructor) { |
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1902 if (want_constructor) { |
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1903 return (method->is_initializer() && !method->is_static()); |
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1904 } else { |
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1905 return (!method->is_initializer() && !method->is_overpass()); |
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1906 } |
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1907 } |
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1908 |
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1909 static jobjectArray get_class_declared_methods_helper( |
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1910 JNIEnv *env, |
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1911 jclass ofClass, jboolean publicOnly, |
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1912 bool want_constructor, |
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1913 Klass* klass, TRAPS) { |
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1914 |
0 | 1915 JvmtiVMObjectAllocEventCollector oam; |
1916 | |
1917 // Exclude primitive types and array types | |
1918 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1919 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1920 // Return empty array |
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1921 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1922 return (jobjectArray) JNIHandles::make_local(env, res); |
1923 } | |
1924 | |
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1925 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1926 |
1927 // Ensure class is linked | |
1928 k->link_class(CHECK_NULL); | |
1929 | |
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1930 Array<Method*>* methods = k->methods(); |
0 | 1931 int methods_length = methods->length(); |
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1932 |
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1933 // Save original method_idnum in case of redefinition, which can change |
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1934 // the idnum of obsolete methods. The new method will have the same idnum |
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1935 // but if we refresh the methods array, the counts will be wrong. |
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1936 ResourceMark rm(THREAD); |
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1937 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1938 int num_methods = 0; |
1939 | |
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1940 for (int i = 0; i < methods_length; i++) { |
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1941 methodHandle method(THREAD, methods->at(i)); |
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1942 if (select_method(method, want_constructor)) { |
0 | 1943 if (!publicOnly || method->is_public()) { |
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1944 idnums->push(method->method_idnum()); |
0 | 1945 ++num_methods; |
1946 } | |
1947 } | |
1948 } | |
1949 | |
1950 // Allocate result | |
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1951 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1952 objArrayHandle result (THREAD, r); |
1953 | |
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1954 // Now just put the methods that we selected above, but go by their idnum |
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1955 // in case of redefinition. The methods can be redefined at any safepoint, |
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1956 // so above when allocating the oop array and below when creating reflect |
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1957 // objects. |
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1958 for (int i = 0; i < num_methods; i++) { |
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1959 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1960 if (method.is_null()) { |
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1961 // Method may have been deleted and seems this API can handle null |
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1962 // Otherwise should probably put a method that throws NSME |
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1963 result->obj_at_put(i, NULL); |
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1964 } else { |
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1965 oop m; |
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1966 if (want_constructor) { |
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1967 m = Reflection::new_constructor(method, CHECK_NULL); |
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1968 } else { |
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1969 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1970 } |
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1971 result->obj_at_put(i, m); |
0 | 1972 } |
1973 } | |
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1974 |
0 | 1975 return (jobjectArray) JNIHandles::make_local(env, result()); |
1976 } | |
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1977 |
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1978 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1979 { |
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1980 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1981 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1982 /*want_constructor*/ false, |
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1983 SystemDictionary::reflect_Method_klass(), THREAD); |
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1984 } |
0 | 1985 JVM_END |
1986 | |
1987 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1988 { | |
1989 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1990 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1991 /*want_constructor*/ true, |
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1992 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1993 } |
1994 JVM_END | |
1995 | |
1996 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1997 { | |
1998 JVMWrapper("JVM_GetClassAccessFlags"); | |
1999 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
2000 // Primitive type | |
2001 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
2002 } | |
2003 | |
6983 | 2004 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2005 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
2006 } | |
2007 JVM_END | |
2008 | |
2009 | |
2010 // Constant pool access ////////////////////////////////////////////////////////// | |
2011 | |
2012 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
2013 { | |
2014 JVMWrapper("JVM_GetClassConstantPool"); | |
2015 JvmtiVMObjectAllocEventCollector oam; | |
2016 | |
2017 // Return null for primitives and arrays | |
2018 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2019 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 2020 if (k->oop_is_instance()) { |
0 | 2021 instanceKlassHandle k_h(THREAD, k); |
2022 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2023 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 2024 return JNIHandles::make_local(jcp()); |
2025 } | |
2026 } | |
2027 return NULL; | |
2028 } | |
2029 JVM_END | |
2030 | |
2031 | |
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2032 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 2033 { |
2034 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2035 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2036 return cp->length(); |
2037 } | |
2038 JVM_END | |
2039 | |
2040 | |
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2041 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2042 { |
2043 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2044 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2045 bounds_check(cp, index, CHECK_NULL); |
2046 constantTag tag = cp->tag_at(index); | |
2047 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2048 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2049 } | |
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2050 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2051 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2052 } |
2053 JVM_END | |
2054 | |
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2055 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2056 { |
2057 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2058 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2059 bounds_check(cp, index, CHECK_NULL); |
2060 constantTag tag = cp->tag_at(index); | |
2061 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2062 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2063 } | |
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2064 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2065 if (k == NULL) return NULL; |
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2066 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2067 } |
2068 JVM_END | |
2069 | |
2070 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2071 constantTag tag = cp->tag_at(index); | |
2072 if (!tag.is_method() && !tag.is_interface_method()) { | |
2073 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2074 } | |
2075 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2076 Klass* k_o; |
0 | 2077 if (force_resolution) { |
2078 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2079 } else { | |
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2080 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2081 if (k_o == NULL) return NULL; |
2082 } | |
2083 instanceKlassHandle k(THREAD, k_o); | |
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2084 Symbol* name = cp->uncached_name_ref_at(index); |
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2085 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2086 methodHandle m (THREAD, k->find_method(name, sig)); |
2087 if (m.is_null()) { | |
2088 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2089 } | |
2090 oop method; | |
2091 if (!m->is_initializer() || m->is_static()) { | |
2092 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2093 } else { | |
2094 method = Reflection::new_constructor(m, CHECK_NULL); | |
2095 } | |
2096 return JNIHandles::make_local(method); | |
2097 } | |
2098 | |
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2099 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2100 { |
2101 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2102 JvmtiVMObjectAllocEventCollector oam; | |
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2103 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2104 bounds_check(cp, index, CHECK_NULL); |
2105 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2106 return res; | |
2107 } | |
2108 JVM_END | |
2109 | |
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2110 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2111 { |
2112 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2113 JvmtiVMObjectAllocEventCollector oam; | |
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2114 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2115 bounds_check(cp, index, CHECK_NULL); |
2116 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2117 return res; | |
2118 } | |
2119 JVM_END | |
2120 | |
2121 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2122 constantTag tag = cp->tag_at(index); | |
2123 if (!tag.is_field()) { | |
2124 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2125 } | |
2126 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2127 Klass* k_o; |
0 | 2128 if (force_resolution) { |
2129 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2130 } else { | |
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2131 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2132 if (k_o == NULL) return NULL; |
2133 } | |
2134 instanceKlassHandle k(THREAD, k_o); | |
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2135 Symbol* name = cp->uncached_name_ref_at(index); |
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2136 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2137 fieldDescriptor fd; |
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2138 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2139 if (target_klass == NULL) { |
2140 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2141 } | |
2142 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2143 return JNIHandles::make_local(field); | |
2144 } | |
2145 | |
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2146 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2147 { |
2148 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2149 JvmtiVMObjectAllocEventCollector oam; | |
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2150 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2151 bounds_check(cp, index, CHECK_NULL); |
2152 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2153 return res; | |
2154 } | |
2155 JVM_END | |
2156 | |
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2157 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2158 { |
2159 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2160 JvmtiVMObjectAllocEventCollector oam; | |
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2161 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2162 bounds_check(cp, index, CHECK_NULL); |
2163 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2164 return res; | |
2165 } | |
2166 JVM_END | |
2167 | |
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2168 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2169 { |
2170 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2171 JvmtiVMObjectAllocEventCollector oam; | |
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2172 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2173 bounds_check(cp, index, CHECK_NULL); |
2174 constantTag tag = cp->tag_at(index); | |
2175 if (!tag.is_field_or_method()) { | |
2176 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2177 } | |
2178 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2179 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2180 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2181 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2182 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2183 objArrayHandle dest(THREAD, dest_o); |
2184 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2185 dest->obj_at_put(0, str()); | |
2186 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2187 dest->obj_at_put(1, str()); | |
2188 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2189 dest->obj_at_put(2, str()); | |
2190 return (jobjectArray) JNIHandles::make_local(dest()); | |
2191 } | |
2192 JVM_END | |
2193 | |
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2194 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2195 { |
2196 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2197 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2198 bounds_check(cp, index, CHECK_0); |
2199 constantTag tag = cp->tag_at(index); | |
2200 if (!tag.is_int()) { | |
2201 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2202 } | |
2203 return cp->int_at(index); | |
2204 } | |
2205 JVM_END | |
2206 | |
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2207 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2208 { |
2209 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2210 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2211 bounds_check(cp, index, CHECK_(0L)); |
2212 constantTag tag = cp->tag_at(index); | |
2213 if (!tag.is_long()) { | |
2214 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2215 } | |
2216 return cp->long_at(index); | |
2217 } | |
2218 JVM_END | |
2219 | |
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2220 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2221 { |
2222 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2223 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2224 bounds_check(cp, index, CHECK_(0.0f)); |
2225 constantTag tag = cp->tag_at(index); | |
2226 if (!tag.is_float()) { | |
2227 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2228 } | |
2229 return cp->float_at(index); | |
2230 } | |
2231 JVM_END | |
2232 | |
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2233 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2234 { |
2235 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2236 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2237 bounds_check(cp, index, CHECK_(0.0)); |
2238 constantTag tag = cp->tag_at(index); | |
2239 if (!tag.is_double()) { | |
2240 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2241 } | |
2242 return cp->double_at(index); | |
2243 } | |
2244 JVM_END | |
2245 | |
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2246 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2247 { |
2248 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2249 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2250 bounds_check(cp, index, CHECK_NULL); |
2251 constantTag tag = cp->tag_at(index); | |
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2252 if (!tag.is_string()) { |
0 | 2253 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2254 } | |
2255 oop str = cp->string_at(index, CHECK_NULL); | |
2256 return (jstring) JNIHandles::make_local(str); | |
2257 } | |
2258 JVM_END | |
2259 | |
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2260 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2261 { |
2262 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2263 JvmtiVMObjectAllocEventCollector oam; | |
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2264 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2265 bounds_check(cp, index, CHECK_NULL); |
2266 constantTag tag = cp->tag_at(index); | |
2267 if (!tag.is_symbol()) { | |
2268 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2269 } | |
2177
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2270 Symbol* sym = cp->symbol_at(index); |
0 | 2271 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2272 return (jstring) JNIHandles::make_local(str()); | |
2273 } | |
2274 JVM_END | |
2275 | |
2276 | |
2277 // Assertion support. ////////////////////////////////////////////////////////// | |
2278 | |
2279 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2280 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2281 assert(cls != NULL, "bad class"); | |
2282 | |
2283 oop r = JNIHandles::resolve(cls); | |
2284 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2285 if (java_lang_Class::is_primitive(r)) return false; | |
2286 | |
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2287 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2288 assert(k->oop_is_instance(), "must be an instance klass"); |
2289 if (! k->oop_is_instance()) return false; | |
0 | 2290 |
2291 ResourceMark rm(THREAD); | |
6983 | 2292 const char* name = k->name()->as_C_string(); |
2293 bool system_class = k->class_loader() == NULL; | |
0 | 2294 return JavaAssertions::enabled(name, system_class); |
2295 | |
2296 JVM_END | |
2297 | |
2298 | |
2299 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2300 // command-line assertion arguments (i.e., -ea, -da). | |
2301 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2302 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2303 JvmtiVMObjectAllocEventCollector oam; | |
2304 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2305 return JNIHandles::make_local(env, asd); | |
2306 JVM_END | |
2307 | |
2308 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2309 | |
2310 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2311 | |
2312 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2313 // All functions from this section should call the jvmtiThreadSate function: | |
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2314 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2315 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2316 // was invoked in the middle of the class redefinition. |
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2317 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2318 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2319 | |
2320 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2321 JVMWrapper("JVM_GetClassNameUTF"); | |
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2322 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2323 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2324 return k->name()->as_utf8(); |
0 | 2325 JVM_END |
2326 | |
2327 | |
2328 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2329 JVMWrapper("JVM_GetClassCPTypes"); | |
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2330 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2331 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2332 // types will have length zero if this is not an InstanceKlass |
0 | 2333 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2334 if (k->oop_is_instance()) { |
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2335 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2336 for (int index = cp->length() - 1; index >= 0; index--) { |
2337 constantTag tag = cp->tag_at(index); | |
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2338 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2339 } |
2340 } | |
2341 JVM_END | |
2342 | |
2343 | |
2344 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2345 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2346 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2347 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2348 if (!k->oop_is_instance()) |
0 | 2349 return 0; |
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2350 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2351 JVM_END |
2352 | |
2353 | |
2354 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2355 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2356 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2357 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2358 if (!k->oop_is_instance()) |
0 | 2359 return 0; |
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2360 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2361 JVM_END |
2362 | |
2363 | |
2364 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2365 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2366 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2367 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2368 if (!k->oop_is_instance()) |
0 | 2369 return 0; |
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2370 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2371 JVM_END |
2372 | |
2373 | |
2374 // The following methods, used for the verifier, are never called with | |
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2375 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2376 // Typically, these methods are called in a loop with bounds determined |
2377 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2378 // zero for arrays. | |
2379 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2380 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2381 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2382 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2383 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2384 int length = method->checked_exceptions_length(); |
0 | 2385 if (length > 0) { |
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2386 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2387 for (int i = 0; i < length; i++) { |
2388 exceptions[i] = table[i].class_cp_index; | |
2389 } | |
2390 } | |
2391 JVM_END | |
2392 | |
2393 | |
2394 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2395 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2396 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2397 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2398 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2399 return method->checked_exceptions_length(); |
0 | 2400 JVM_END |
2401 | |
2402 | |
2403 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2404 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2405 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2406 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2407 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2408 memcpy(code, method->code_base(), method->code_size()); |
0 | 2409 JVM_END |
2410 | |
2411 | |
2412 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2413 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2414 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2415 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2416 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2417 return method->code_size(); |
0 | 2418 JVM_END |
2419 | |
2420 | |
2421 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2422 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2423 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2424 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2425 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2426 ExceptionTable extable(method); |
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2427 entry->start_pc = extable.start_pc(entry_index); |
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2428 entry->end_pc = extable.end_pc(entry_index); |
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2429 entry->handler_pc = extable.handler_pc(entry_index); |
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2430 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2431 JVM_END |
2432 | |
2433 | |
2434 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2435 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2436 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2437 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2438 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2439 return method->exception_table_length(); |
0 | 2440 JVM_END |
2441 | |
2442 | |
2443 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2444 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2445 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2446 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2447 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2448 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2449 JVM_END |
2450 | |
2451 | |
2452 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2453 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2454 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2455 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2456 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2457 JVM_END |
2458 | |
2459 | |
2460 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2461 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2462 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2463 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2464 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2465 return method->max_locals(); |
0 | 2466 JVM_END |
2467 | |
2468 | |
2469 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2470 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2471 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2472 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2473 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2474 return method->size_of_parameters(); |
0 | 2475 JVM_END |
2476 | |
2477 | |
2478 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2479 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2480 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2481 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2482 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2483 return method->verifier_max_stack(); |
0 | 2484 JVM_END |
2485 | |
2486 | |
2487 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2488 JVMWrapper("JVM_IsConstructorIx"); | |
2489 ResourceMark rm(THREAD); | |
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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->name() == vmSymbols::object_initializer_name(); |
0 | 2494 JVM_END |
2495 | |
2496 | |
7958
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2497 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2498 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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|
2499 ResourceMark rm(THREAD); |
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2500 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2501 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2502 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2503 return method->is_overpass(); |
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|
2504 JVM_END |
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|
2505 |
0 | 2506 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2507 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2508 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2509 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2510 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2511 return method->name()->as_utf8(); |
0 | 2512 JVM_END |
2513 | |
2514 | |
2515 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2516 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2517 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2518 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2519 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2520 return method->signature()->as_utf8(); |
0 | 2521 JVM_END |
2522 | |
2523 /** | |
2524 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2525 * read entries in the constant pool. Since the old verifier always | |
2526 * works on a copy of the code, it will not see any rewriting that | |
2527 * may possibly occur in the middle of verification. So it is important | |
2528 * that nothing it calls tries to use the cpCache instead of the raw | |
2529 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2530 */ | |
2531 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2532 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2533 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2534 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2535 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2536 switch (cp->tag_at(cp_index).value()) { |
2537 case JVM_CONSTANT_Fieldref: | |
2538 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2539 default: | |
2540 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2541 } | |
2542 ShouldNotReachHere(); | |
2543 return NULL; | |
2544 JVM_END | |
2545 | |
2546 | |
2547 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2548 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2549 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2550 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2551 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2552 switch (cp->tag_at(cp_index).value()) { |
2553 case JVM_CONSTANT_InterfaceMethodref: | |
2554 case JVM_CONSTANT_Methodref: | |
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|
2555 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2556 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2557 default: | |
2558 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2559 } | |
2560 ShouldNotReachHere(); | |
2561 return NULL; | |
2562 JVM_END | |
2563 | |
2564 | |
2565 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2566 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2567 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2568 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2569 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2570 switch (cp->tag_at(cp_index).value()) { |
2571 case JVM_CONSTANT_InterfaceMethodref: | |
2572 case JVM_CONSTANT_Methodref: | |
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2573 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2574 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2575 default: | |
2576 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2577 } | |
2578 ShouldNotReachHere(); | |
2579 return NULL; | |
2580 JVM_END | |
2581 | |
2582 | |
2583 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2584 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2585 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2586 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2587 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2588 switch (cp->tag_at(cp_index).value()) { |
2589 case JVM_CONSTANT_Fieldref: | |
2590 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2591 default: | |
2592 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2593 } | |
2594 ShouldNotReachHere(); | |
2595 return NULL; | |
2596 JVM_END | |
2597 | |
2598 | |
2599 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2600 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2601 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2602 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2603 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2604 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2605 return classname->as_utf8(); |
2606 JVM_END | |
2607 | |
2608 | |
2609 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2610 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2611 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2612 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2613 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2614 switch (cp->tag_at(cp_index).value()) { |
2615 case JVM_CONSTANT_Fieldref: { | |
2616 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2617 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2618 return classname->as_utf8(); |
2619 } | |
2620 default: | |
2621 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2622 } | |
2623 ShouldNotReachHere(); | |
2624 return NULL; | |
2625 JVM_END | |
2626 | |
2627 | |
2628 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2629 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2630 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2631 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2632 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2633 switch (cp->tag_at(cp_index).value()) { |
2634 case JVM_CONSTANT_Methodref: | |
2635 case JVM_CONSTANT_InterfaceMethodref: { | |
2636 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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|
2637 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2638 return classname->as_utf8(); |
2639 } | |
2640 default: | |
2641 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2642 } | |
2643 ShouldNotReachHere(); | |
2644 return NULL; | |
2645 JVM_END | |
2646 | |
2647 | |
3938 | 2648 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2649 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2650 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2651 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2652 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2653 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2654 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2655 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2656 switch (cp->tag_at(cp_index).value()) { |
2657 case JVM_CONSTANT_Fieldref: { | |
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|
2658 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2659 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2660 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2661 if (fs.name() == name && fs.signature() == signature) { | |
2662 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2663 } |
2664 } | |
2665 return -1; | |
2666 } | |
2667 default: | |
2668 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2669 } | |
2670 ShouldNotReachHere(); | |
2671 return 0; | |
2672 JVM_END | |
2673 | |
2674 | |
2675 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2676 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2677 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2678 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2679 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2680 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2681 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2682 switch (cp->tag_at(cp_index).value()) { |
2683 case JVM_CONSTANT_Methodref: | |
2684 case JVM_CONSTANT_InterfaceMethodref: { | |
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|
2685 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2686 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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|
2687 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2688 int methods_count = methods->length(); |
2689 for (int i = 0; i < methods_count; i++) { | |
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|
2690 Method* method = methods->at(i); |
0 | 2691 if (method->name() == name && method->signature() == signature) { |
2692 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2693 } | |
2694 } | |
2695 return -1; | |
2696 } | |
2697 default: | |
2698 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2699 } | |
2700 ShouldNotReachHere(); | |
2701 return 0; | |
2702 JVM_END | |
2703 | |
2704 | |
2705 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2706 | |
2707 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2708 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2709 JVM_END | |
2710 | |
2711 | |
2712 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2713 JVMWrapper("JVM_IsSameClassPackage"); | |
2714 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2715 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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|
2716 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2717 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2718 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2719 JVM_END | |
2720 | |
2721 | |
2722 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2723 | |
2724 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2725 JVMWrapper2("JVM_Open (%s)", fname); | |
2726 | |
2727 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2728 int result = os::open(fname, flags, mode); |
0 | 2729 if (result >= 0) { |
2730 return result; | |
2731 } else { | |
2732 switch(errno) { | |
2733 case EEXIST: | |
2734 return JVM_EEXIST; | |
2735 default: | |
2736 return -1; | |
2737 } | |
2738 } | |
2739 JVM_END | |
2740 | |
2741 | |
2742 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2743 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2744 //%note jvm_r6 | |
1980
828eafbd85cc
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ikrylov
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diff
changeset
|
2745 return os::close(fd); |
0 | 2746 JVM_END |
2747 | |
2748 | |
2749 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2750 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2751 | |
2752 //%note jvm_r6 | |
1980
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6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2753 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2754 JVM_END |
2755 | |
2756 | |
2757 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2758 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2759 | |
2760 //%note jvm_r6 | |
1980
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diff
changeset
|
2761 return (jint)os::write(fd, buf, nbytes); |
0 | 2762 JVM_END |
2763 | |
2764 | |
2765 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2766 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2767 //%note jvm_r6 | |
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diff
changeset
|
2768 return os::available(fd, pbytes); |
0 | 2769 JVM_END |
2770 | |
2771 | |
2772 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
17937
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drchase
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17889
diff
changeset
|
2773 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
0 | 2774 //%note jvm_r6 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2775 return os::lseek(fd, offset, whence); |
0 | 2776 JVM_END |
2777 | |
2778 | |
2779 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
17937
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17889
diff
changeset
|
2780 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2781 return os::ftruncate(fd, length); |
0 | 2782 JVM_END |
2783 | |
2784 | |
2785 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2786 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2787 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2788 return os::fsync(fd); |
0 | 2789 JVM_END |
2790 | |
2791 | |
2792 // Printing support ////////////////////////////////////////////////// | |
2793 extern "C" { | |
2794 | |
17937
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parents:
17889
diff
changeset
|
2795 ATTRIBUTE_PRINTF(3, 0) |
0 | 2796 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
2797 // see bug 4399518, 4417214 | |
2798 if ((intptr_t)count <= 0) return -1; | |
2799 return vsnprintf(str, count, fmt, args); | |
2800 } | |
2801 | |
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17889
diff
changeset
|
2802 ATTRIBUTE_PRINTF(3, 0) |
0 | 2803 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
2804 va_list args; | |
2805 int len; | |
2806 va_start(args, fmt); | |
2807 len = jio_vsnprintf(str, count, fmt, args); | |
2808 va_end(args); | |
2809 return len; | |
2810 } | |
2811 | |
17937
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17889
diff
changeset
|
2812 ATTRIBUTE_PRINTF(2,3) |
0 | 2813 int jio_fprintf(FILE* f, const char *fmt, ...) { |
2814 int len; | |
2815 va_list args; | |
2816 va_start(args, fmt); | |
2817 len = jio_vfprintf(f, fmt, args); | |
2818 va_end(args); | |
2819 return len; | |
2820 } | |
2821 | |
17937
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drchase
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diff
changeset
|
2822 ATTRIBUTE_PRINTF(2, 0) |
0 | 2823 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
2824 if (Arguments::vfprintf_hook() != NULL) { | |
2825 return Arguments::vfprintf_hook()(f, fmt, args); | |
2826 } else { | |
2827 return vfprintf(f, fmt, args); | |
2828 } | |
2829 } | |
2830 | |
17937
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drchase
parents:
17889
diff
changeset
|
2831 ATTRIBUTE_PRINTF(1, 2) |
2191 | 2832 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2833 int len; |
2834 va_list args; | |
2835 va_start(args, fmt); | |
2836 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2837 va_end(args); | |
2838 return len; | |
2839 } | |
2840 | |
2841 | |
2842 // HotSpot specific jio method | |
2843 void jio_print(const char* s) { | |
2844 // Try to make this function as atomic as possible. | |
2845 if (Arguments::vfprintf_hook() != NULL) { | |
2846 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2847 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2848 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2849 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2850 } |
2851 } | |
2852 | |
2853 } // Extern C | |
2854 | |
2855 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2856 | |
2857 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2858 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2859 // OSThread objects. The exception to this rule is when the target object is the thread | |
2860 // doing the operation, in which case we know that the thread won't exit until the | |
2861 // operation is done (all exits being voluntary). There are a few cases where it is | |
2862 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2863 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2864 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2865 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2866 // implementation is local to this file, we always lock Threads_lock for that one. | |
2867 | |
2868 static void thread_entry(JavaThread* thread, TRAPS) { | |
2869 HandleMark hm(THREAD); | |
2870 Handle obj(THREAD, thread->threadObj()); | |
2871 JavaValue result(T_VOID); | |
2872 JavaCalls::call_virtual(&result, | |
2873 obj, | |
1142 | 2874 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2875 vmSymbols::run_method_name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2876 vmSymbols::void_method_signature(), |
0 | 2877 THREAD); |
2878 } | |
2879 | |
2880 | |
2881 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2882 JVMWrapper("JVM_StartThread"); | |
2883 JavaThread *native_thread = NULL; | |
2884 | |
2885 // We cannot hold the Threads_lock when we throw an exception, | |
2886 // due to rank ordering issues. Example: we might need to grab the | |
2887 // Heap_lock while we construct the exception. | |
2888 bool throw_illegal_thread_state = false; | |
2889 | |
2890 // We must release the Threads_lock before we can post a jvmti event | |
2891 // in Thread::start. | |
2892 { | |
2893 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2894 // we operate. | |
2895 MutexLocker mu(Threads_lock); | |
2896 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2897 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2898 // re-starting an already started thread, so we should usually find |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2899 // that the JavaThread is null. However for a JNI attached thread |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2900 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2901 // (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
|
2902 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2903 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2904 throw_illegal_thread_state = true; |
0 | 2905 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2906 // 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
|
2907 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2908 |
0 | 2909 jlong size = |
2910 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2911 // Allocate the C++ Thread structure and create the native thread. The | |
2912 // stack size retrieved from java is signed, but the constructor takes | |
2913 // size_t (an unsigned type), so avoid passing negative values which would | |
2914 // result in really large stacks. | |
2915 size_t sz = size > 0 ? (size_t) size : 0; | |
2916 native_thread = new JavaThread(&thread_entry, sz); | |
2917 | |
2918 // At this point it may be possible that no osthread was created for the | |
2919 // JavaThread due to lack of memory. Check for this situation and throw | |
2920 // an exception if necessary. Eventually we may want to change this so | |
2921 // that we only grab the lock if the thread was created successfully - | |
2922 // then we can also do this check and throw the exception in the | |
2923 // JavaThread constructor. | |
2924 if (native_thread->osthread() != NULL) { | |
2925 // Note: the current thread is not being used within "prepare". | |
2926 native_thread->prepare(jthread); | |
2927 } | |
2928 } | |
2929 } | |
2930 | |
2931 if (throw_illegal_thread_state) { | |
2932 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2933 } | |
2934 | |
2935 assert(native_thread != NULL, "Starting null thread?"); | |
2936 | |
2937 if (native_thread->osthread() == NULL) { | |
2938 // No one should hold a reference to the 'native_thread'. | |
2939 delete native_thread; | |
2940 if (JvmtiExport::should_post_resource_exhausted()) { | |
2941 JvmtiExport::post_resource_exhausted( | |
2942 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2943 "unable to create new native thread"); | |
2944 } | |
2945 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2946 "unable to create new native thread"); | |
2947 } | |
2948 | |
2949 Thread::start(native_thread); | |
2950 | |
2951 JVM_END | |
2952 | |
2953 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2954 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2955 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2956 // same thread as the sender, no safepoint is needed. |
0 | 2957 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2958 JVMWrapper("JVM_StopThread"); | |
2959 | |
2960 oop java_throwable = JNIHandles::resolve(throwable); | |
2961 if (java_throwable == NULL) { | |
2962 THROW(vmSymbols::java_lang_NullPointerException()); | |
2963 } | |
2964 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2965 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
|
2966 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2967 "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
|
2968 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2969 // First check if thread is alive |
0 | 2970 if (receiver != NULL) { |
2971 // Check if exception is getting thrown at self (use oop equality, since the | |
2972 // target object might exit) | |
2973 if (java_thread == thread->threadObj()) { | |
2974 THROW_OOP(java_throwable); | |
2975 } else { | |
2976 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2977 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2978 } | |
2979 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2980 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2981 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2982 // - 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
|
2983 // - 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
|
2984 // 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
|
2985 // 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
|
2986 // 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
|
2987 // 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
|
2988 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
|
2989 } |
0 | 2990 JVM_END |
2991 | |
2992 | |
2993 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2994 JVMWrapper("JVM_IsThreadAlive"); | |
2995 | |
2996 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2997 return java_lang_Thread::is_alive(thread_oop); | |
2998 JVM_END | |
2999 | |
3000 | |
3001 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
3002 JVMWrapper("JVM_SuspendThread"); | |
3003 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3004 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
3005 | |
3006 if (receiver != NULL) { | |
3007 // thread has run and has not exited (still on threads list) | |
3008 | |
3009 { | |
3010 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
3011 if (receiver->is_external_suspend()) { | |
3012 // Don't allow nested external suspend requests. We can't return | |
3013 // an error from this interface so just ignore the problem. | |
3014 return; | |
3015 } | |
3016 if (receiver->is_exiting()) { // thread is in the process of exiting | |
3017 return; | |
3018 } | |
3019 receiver->set_external_suspend(); | |
3020 } | |
3021 | |
3022 // java_suspend() will catch threads in the process of exiting | |
3023 // and will ignore them. | |
3024 receiver->java_suspend(); | |
3025 | |
3026 // It would be nice to have the following assertion in all the | |
3027 // time, but it is possible for a racing resume request to have | |
3028 // resumed this thread right after we suspended it. Temporarily | |
3029 // enable this assertion if you are chasing a different kind of | |
3030 // bug. | |
3031 // | |
3032 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
3033 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
3034 } | |
3035 JVM_END | |
3036 | |
3037 | |
3038 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3039 JVMWrapper("JVM_ResumeThread"); | |
3040 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3041 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3042 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3043 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3044 // looks at it. | |
3045 MutexLocker ml(Threads_lock); | |
3046 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3047 if (thr != NULL) { | |
3048 // the thread has run and is not in the process of exiting | |
3049 thr->java_resume(); | |
3050 } | |
3051 JVM_END | |
3052 | |
3053 | |
3054 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3055 JVMWrapper("JVM_SetThreadPriority"); | |
3056 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3057 MutexLocker ml(Threads_lock); | |
3058 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3059 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3060 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3061 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3062 Thread::set_priority(thr, (ThreadPriority)prio); | |
3063 } | |
3064 JVM_END | |
3065 | |
3066 | |
3067 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3068 JVMWrapper("JVM_Yield"); | |
3069 if (os::dont_yield()) return; | |
4006 | 3070 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3071 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3072 #else /* USDT2 */ |
3073 HOTSPOT_THREAD_YIELD(); | |
3074 #endif /* USDT2 */ | |
0 | 3075 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3076 // Critical for similar threading behaviour | |
3077 if (ConvertYieldToSleep) { | |
3078 os::sleep(thread, MinSleepInterval, false); | |
3079 } else { | |
3080 os::yield(); | |
3081 } | |
3082 JVM_END | |
3083 | |
3084 | |
3085 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3086 JVMWrapper("JVM_Sleep"); | |
3087 | |
3088 if (millis < 0) { | |
3089 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3090 } | |
3091 | |
3092 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3093 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3094 } | |
3095 | |
3096 // Save current thread state and restore it at the end of this block. | |
3097 // And set new thread state to SLEEPING. | |
3098 JavaThreadSleepState jtss(thread); | |
3099 | |
4006 | 3100 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3101 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3102 #else /* USDT2 */ |
3103 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3104 millis); | |
3105 #endif /* USDT2 */ | |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3106 |
10405 | 3107 EventThreadSleep event; |
3108 | |
0 | 3109 if (millis == 0) { |
3110 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3111 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3112 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3113 // for SOLARIS | |
3114 if (ConvertSleepToYield) { | |
3115 os::yield(); | |
3116 } else { | |
3117 ThreadState old_state = thread->osthread()->get_state(); | |
3118 thread->osthread()->set_state(SLEEPING); | |
3119 os::sleep(thread, MinSleepInterval, false); | |
3120 thread->osthread()->set_state(old_state); | |
3121 } | |
3122 } else { | |
3123 ThreadState old_state = thread->osthread()->get_state(); | |
3124 thread->osthread()->set_state(SLEEPING); | |
3125 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3126 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3127 // us while we were sleeping. We do not overwrite those. | |
3128 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3129 if (event.should_commit()) { |
3130 event.set_time(millis); | |
3131 event.commit(); | |
3132 } | |
4006 | 3133 #ifndef USDT2 |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3134 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3135 #else /* USDT2 */ |
3136 HOTSPOT_THREAD_SLEEP_END( | |
3137 1); | |
3138 #endif /* USDT2 */ | |
0 | 3139 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3140 // to properly restore the thread state. That's likely wrong. | |
3141 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3142 } | |
3143 } | |
3144 thread->osthread()->set_state(old_state); | |
3145 } | |
10405 | 3146 if (event.should_commit()) { |
3147 event.set_time(millis); | |
3148 event.commit(); | |
3149 } | |
4006 | 3150 #ifndef USDT2 |
1324
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3151 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3152 #else /* USDT2 */ |
3153 HOTSPOT_THREAD_SLEEP_END( | |
3154 0); | |
3155 #endif /* USDT2 */ | |
0 | 3156 JVM_END |
3157 | |
3158 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3159 JVMWrapper("JVM_CurrentThread"); | |
3160 oop jthread = thread->threadObj(); | |
3161 assert (thread != NULL, "no current thread!"); | |
3162 return JNIHandles::make_local(env, jthread); | |
3163 JVM_END | |
3164 | |
3165 | |
3166 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3167 JVMWrapper("JVM_CountStackFrames"); | |
3168 | |
3169 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3170 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3171 bool throw_illegal_thread_state = false; | |
3172 int count = 0; | |
3173 | |
3174 { | |
3175 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3176 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3177 // acquire of the lock | |
3178 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3179 | |
3180 if (thr == NULL) { | |
3181 // do nothing | |
3182 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3183 // Check whether this java thread has been suspended already. If not, throws | |
3184 // IllegalThreadStateException. We defer to throw that exception until | |
3185 // Threads_lock is released since loading exception class has to leave VM. | |
3186 // The correct way to test a thread is actually suspended is | |
3187 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3188 // the Threads_lock. The above tests are sufficient for our purposes | |
3189 // provided the walkability of the stack is stable - which it isn't | |
3190 // 100% but close enough for most practical purposes. | |
3191 throw_illegal_thread_state = true; | |
3192 } else { | |
3193 // Count all java activation, i.e., number of vframes | |
3194 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3195 // Native frames are not counted | |
3196 if (!vfst.method()->is_native()) count++; | |
3197 } | |
3198 } | |
3199 } | |
3200 | |
3201 if (throw_illegal_thread_state) { | |
3202 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3203 "this thread is not suspended"); | |
3204 } | |
3205 return count; | |
3206 JVM_END | |
3207 | |
3208 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3209 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3210 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3211 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3212 // outside the critical section. Threads_lock is hot so we want to minimize | |
3213 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3214 // two steps. The 1st phase, performed under Threads_lock, would return | |
3215 // a closure that'd be invoked after Threads_lock was dropped. | |
3216 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3217 // admit spurious wakeups. | |
3218 | |
3219 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3220 JVMWrapper("JVM_Interrupt"); | |
3221 | |
3222 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3223 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3224 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3225 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3226 // acquire of the lock | |
3227 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3228 if (thr != NULL) { | |
3229 Thread::interrupt(thr); | |
3230 } | |
3231 JVM_END | |
3232 | |
3233 | |
3234 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3235 JVMWrapper("JVM_IsInterrupted"); | |
3236 | |
3237 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3238 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3239 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3240 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3241 // acquire of the lock | |
3242 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3243 if (thr == NULL) { | |
3244 return JNI_FALSE; | |
3245 } else { | |
3246 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3247 } | |
3248 JVM_END | |
3249 | |
3250 | |
3251 // Return true iff the current thread has locked the object passed in | |
3252 | |
3253 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3254 JVMWrapper("JVM_HoldsLock"); | |
3255 assert(THREAD->is_Java_thread(), "sanity check"); | |
3256 if (obj == NULL) { | |
3257 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3258 } | |
3259 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3260 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3261 JVM_END | |
3262 | |
3263 | |
3264 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3265 JVMWrapper("JVM_DumpAllStacks"); | |
3266 VM_PrintThreads op; | |
3267 VMThread::execute(&op); | |
3268 if (JvmtiExport::should_post_data_dump()) { | |
3269 JvmtiExport::post_data_dump(); | |
3270 } | |
3271 JVM_END | |
3272 | |
4006 | 3273 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3274 JVMWrapper("JVM_SetNativeThreadName"); | |
3275 ResourceMark rm(THREAD); | |
3276 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3277 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3278 // Thread naming only supported for the current thread, doesn't work for | |
3279 // target threads. | |
3280 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3281 // we don't set the name of an attached thread to avoid stepping | |
3282 // on other programs | |
3283 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3284 os::set_native_thread_name(thread_name); | |
3285 } | |
3286 JVM_END | |
0 | 3287 |
3288 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3289 | |
3290 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3291 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3292 if (jthread->privileged_stack_top() == NULL) return false; | |
3293 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3294 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3295 if (loader == NULL) return true; | |
3296 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3297 if (trusted) return true; | |
3298 } | |
3299 return false; | |
3300 } | |
3301 | |
3302 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3303 JVMWrapper("JVM_CurrentLoadedClass"); | |
3304 ResourceMark rm(THREAD); | |
3305 | |
3306 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3307 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3308 bool trusted = is_trusted_frame(thread, &vfst); | |
3309 if (trusted) return NULL; | |
3310 | |
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3311 Method* m = vfst.method(); |
0 | 3312 if (!m->is_native()) { |
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3313 InstanceKlass* holder = m->method_holder(); |
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3314 oop loader = holder->class_loader(); |
0 | 3315 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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|
3316 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3317 } |
3318 } | |
3319 } | |
3320 return NULL; | |
3321 JVM_END | |
3322 | |
3323 | |
3324 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3325 JVMWrapper("JVM_CurrentClassLoader"); | |
3326 ResourceMark rm(THREAD); | |
3327 | |
3328 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3329 | |
3330 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3331 bool trusted = is_trusted_frame(thread, &vfst); | |
3332 if (trusted) return NULL; | |
3333 | |
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3334 Method* m = vfst.method(); |
0 | 3335 if (!m->is_native()) { |
6940
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3336 InstanceKlass* holder = m->method_holder(); |
0 | 3337 assert(holder->is_klass(), "just checking"); |
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3338 oop loader = holder->class_loader(); |
0 | 3339 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3340 return JNIHandles::make_local(env, loader); | |
3341 } | |
3342 } | |
3343 } | |
3344 return NULL; | |
3345 JVM_END | |
3346 | |
3347 | |
3348 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3349 JVMWrapper("JVM_GetClassContext"); | |
3350 ResourceMark rm(THREAD); | |
3351 JvmtiVMObjectAllocEventCollector oam; | |
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3352 vframeStream vfst(thread); |
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|
3353 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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3354 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3355 // This must only be called from SecurityManager.getClassContext |
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3356 Method* m = vfst.method(); |
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3357 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3358 m->name() == vmSymbols::getClassContext_name() && |
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3359 m->signature() == vmSymbols::void_class_array_signature())) { |
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3360 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3361 } |
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|
3362 } |
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|
3363 |
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3364 // Collect method holders |
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|
3365 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3366 for (; !vfst.at_end(); vfst.security_next()) { |
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3367 Method* m = vfst.method(); |
0 | 3368 // Native frames are not returned |
8866
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3369 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3370 Klass* holder = m->method_holder(); |
0 | 3371 assert(holder->is_klass(), "just checking"); |
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3372 klass_array->append(holder); |
0 | 3373 } |
3374 } | |
3375 | |
3376 // Create result array of type [Ljava/lang/Class; | |
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3377 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3378 // Fill in mirrors corresponding to method holders |
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3379 for (int i = 0; i < klass_array->length(); i++) { |
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3380 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3381 } |
3382 | |
3383 return (jobjectArray) JNIHandles::make_local(env, result); | |
3384 JVM_END | |
3385 | |
3386 | |
3387 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3388 JVMWrapper("JVM_ClassDepth"); | |
3389 ResourceMark rm(THREAD); | |
3390 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3391 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3392 | |
3393 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3394 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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3395 if (class_name_sym == NULL) { |
0 | 3396 return -1; |
3397 } | |
3398 | |
3399 int depth = 0; | |
3400 | |
3401 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3402 if (!vfst.method()->is_native()) { | |
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|
3403 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3404 assert(holder->is_klass(), "just checking"); |
6940
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|
3405 if (holder->name() == class_name_sym) { |
0 | 3406 return depth; |
3407 } | |
3408 depth++; | |
3409 } | |
3410 } | |
3411 return -1; | |
3412 JVM_END | |
3413 | |
3414 | |
3415 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3416 JVMWrapper("JVM_ClassLoaderDepth"); | |
3417 ResourceMark rm(THREAD); | |
3418 int depth = 0; | |
3419 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3420 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3421 bool trusted = is_trusted_frame(thread, &vfst); | |
3422 if (trusted) return -1; | |
3423 | |
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3424 Method* m = vfst.method(); |
0 | 3425 if (!m->is_native()) { |
6940
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|
3426 InstanceKlass* holder = m->method_holder(); |
0 | 3427 assert(holder->is_klass(), "just checking"); |
6940
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|
3428 oop loader = holder->class_loader(); |
0 | 3429 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3430 return depth; | |
3431 } | |
3432 depth++; | |
3433 } | |
3434 } | |
3435 return -1; | |
3436 JVM_END | |
3437 | |
3438 | |
3439 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3440 | |
3441 | |
3442 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3443 JVMWrapper("JVM_GetSystemPackage"); | |
3444 ResourceMark rm(THREAD); | |
3445 JvmtiVMObjectAllocEventCollector oam; | |
3446 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3447 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3448 return (jstring) JNIHandles::make_local(result); | |
3449 JVM_END | |
3450 | |
3451 | |
3452 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3453 JVMWrapper("JVM_GetSystemPackages"); | |
3454 JvmtiVMObjectAllocEventCollector oam; | |
3455 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3456 return (jobjectArray) JNIHandles::make_local(result); | |
3457 JVM_END | |
3458 | |
3459 | |
3460 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3461 | |
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3462 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3463 if (current_class == NULL) { |
3464 return true; | |
3465 } | |
3466 if ((current_class == field_class) || access.is_public()) { | |
3467 return true; | |
3468 } | |
3469 | |
3470 if (access.is_protected()) { | |
3471 // See if current_class is a subclass of field_class | |
6983 | 3472 if (current_class->is_subclass_of(field_class)) { |
0 | 3473 return true; |
3474 } | |
3475 } | |
3476 | |
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3477 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3478 } |
3479 | |
3480 | |
3481 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3482 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3483 JVMWrapper("JVM_AllocateNewObject"); | |
3484 JvmtiVMObjectAllocEventCollector oam; | |
3485 // Receiver is not used | |
3486 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3487 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3488 | |
3489 // Cannot instantiate primitive types | |
3490 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3491 ResourceMark rm(THREAD); | |
3492 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3493 } | |
3494 | |
3495 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3496 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3497 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3498 ResourceMark rm(THREAD); |
3499 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3500 } | |
3501 | |
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|
3502 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3503 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3504 |
3505 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3506 | |
3507 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3508 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3509 | |
3510 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3511 curr_klass->initialize(CHECK_NULL); | |
3512 | |
3513 methodHandle m (THREAD, | |
3514 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3515 vmSymbols::void_method_signature())); | |
3516 if (m.is_null()) { | |
3517 ResourceMark rm(THREAD); | |
3518 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3519 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3520 vmSymbols::object_initializer_name(), |
3521 vmSymbols::void_method_signature())); | |
3522 } | |
3523 | |
3524 if (curr_klass == init_klass && !m->is_public()) { | |
3525 // Calling the constructor for class 'curr_klass'. | |
3526 // Only allow calls to a public no-arg constructor. | |
3527 // This path corresponds to creating an Externalizable object. | |
3528 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3529 } | |
3530 | |
3531 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3532 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3533 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3534 } | |
3535 | |
3536 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3537 // Call constructor m. This might call a constructor higher up in the hierachy | |
3538 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3539 | |
3540 return JNIHandles::make_local(obj()); | |
3541 JVM_END | |
3542 | |
3543 | |
3544 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3545 JVMWrapper("JVM_AllocateNewArray"); | |
3546 JvmtiVMObjectAllocEventCollector oam; | |
3547 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3548 | |
3549 if (java_lang_Class::is_primitive(mirror)) { | |
3550 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3551 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3552 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3553 oop result; |
3554 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3555 if (k->oop_is_typeArray()) { |
0 | 3556 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3557 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3558 } else if (k->oop_is_objArray()) { |
0 | 3559 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3560 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3561 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3562 result = oak->allocate(length, CHECK_NULL); | |
3563 } else { | |
3564 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3565 } | |
3566 return JNIHandles::make_local(env, result); | |
3567 JVM_END | |
3568 | |
3569 | |
3570 // Return the first non-null class loader up the execution stack, or null | |
3571 // if only code from the null class loader is on the stack. | |
3572 | |
3573 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3574 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3575 // UseNewReflection | |
3576 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3577 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3578 if (loader != NULL) { |
3579 return JNIHandles::make_local(env, loader); | |
3580 } | |
3581 } | |
3582 return NULL; | |
3583 JVM_END | |
3584 | |
3585 | |
3586 // Load a class relative to the most recent class on the stack with a non-null | |
3587 // classloader. | |
3588 // This function has been deprecated and should not be considered part of the | |
3589 // specified JVM interface. | |
3590 | |
3591 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3592 jclass currClass, jstring currClassName)) | |
3593 JVMWrapper("JVM_LoadClass0"); | |
3594 // Receiver is not used | |
3595 ResourceMark rm(THREAD); | |
3596 | |
3597 // Class name argument is not guaranteed to be in internal format | |
3598 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3599 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3600 | |
3601 const char* str = java_lang_String::as_utf8_string(string()); | |
3602 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3603 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3604 // It's impossible to create this class; the name cannot fit |
3605 // into the constant pool. | |
3606 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3607 } | |
3608 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3609 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3610 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3611 // Find the most recent class on the stack with a non-null classloader | |
3612 oop loader = NULL; | |
3613 oop protection_domain = NULL; | |
3614 if (curr_klass.is_null()) { | |
3615 for (vframeStream vfst(thread); | |
3616 !vfst.at_end() && loader == NULL; | |
3617 vfst.next()) { | |
3618 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
|
3619 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
|
3620 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3621 protection_domain = holder->protection_domain(); |
0 | 3622 } |
3623 } | |
3624 } else { | |
6725
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diff
changeset
|
3625 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
|
3626 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
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diff
changeset
|
3627 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3628 } |
3629 Handle h_loader(THREAD, loader); | |
3630 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3631 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
|
3632 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3633 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3634 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
|
3635 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3636 return result; |
0 | 3637 JVM_END |
3638 | |
3639 | |
3640 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3641 | |
3642 | |
3643 // resolve array handle and check arguments | |
3644 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3645 if (arr == NULL) { | |
3646 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3647 } | |
3648 oop a = JNIHandles::resolve_non_null(arr); | |
6725
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6964458: Reimplement class meta-data storage to use native memory
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parents:
6271
diff
changeset
|
3649 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3650 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3651 } | |
3652 return arrayOop(a); | |
3653 } | |
3654 | |
3655 | |
3656 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3657 JVMWrapper("JVM_GetArrayLength"); | |
3658 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3659 return a->length(); | |
3660 JVM_END | |
3661 | |
3662 | |
3663 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3664 JVMWrapper("JVM_Array_Get"); | |
3665 JvmtiVMObjectAllocEventCollector oam; | |
3666 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3667 jvalue value; | |
3668 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3669 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3670 return JNIHandles::make_local(env, box); | |
3671 JVM_END | |
3672 | |
3673 | |
3674 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3675 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3676 jvalue value; | |
3677 value.i = 0; // to initialize value before getting used in CHECK | |
3678 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3679 assert(a->is_typeArray(), "just checking"); | |
3680 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3681 BasicType wide_type = (BasicType) wCode; | |
3682 if (type != wide_type) { | |
3683 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3684 } | |
3685 return value; | |
3686 JVM_END | |
3687 | |
3688 | |
3689 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3690 JVMWrapper("JVM_SetArrayElement"); | |
3691 arrayOop a = check_array(env, arr, false, CHECK); | |
3692 oop box = JNIHandles::resolve(val); | |
3693 jvalue value; | |
3694 value.i = 0; // to initialize value before getting used in CHECK | |
3695 BasicType value_type; | |
3696 if (a->is_objArray()) { | |
3697 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3698 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3699 } else { | |
3700 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3701 } | |
3702 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3703 JVM_END | |
3704 | |
3705 | |
3706 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3707 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3708 arrayOop a = check_array(env, arr, true, CHECK); | |
3709 assert(a->is_typeArray(), "just checking"); | |
3710 BasicType value_type = (BasicType) vCode; | |
3711 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3712 JVM_END | |
3713 | |
3714 | |
3715 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3716 JVMWrapper("JVM_NewArray"); | |
3717 JvmtiVMObjectAllocEventCollector oam; | |
3718 oop element_mirror = JNIHandles::resolve(eltClass); | |
3719 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3720 return JNIHandles::make_local(env, result); | |
3721 JVM_END | |
3722 | |
3723 | |
3724 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3725 JVMWrapper("JVM_NewMultiArray"); | |
3726 JvmtiVMObjectAllocEventCollector oam; | |
3727 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3728 oop element_mirror = JNIHandles::resolve(eltClass); | |
3729 assert(dim_array->is_typeArray(), "just checking"); | |
3730 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3731 return JNIHandles::make_local(env, result); | |
3732 JVM_END | |
3733 | |
3734 | |
3735 // Networking library support //////////////////////////////////////////////////////////////////// | |
3736 | |
3737 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3738 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3739 return 0; |
0 | 3740 JVM_END |
3741 | |
3742 | |
3743 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3744 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3745 return os::socket(domain, type, protocol); |
0 | 3746 JVM_END |
3747 | |
3748 | |
3749 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3750 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3751 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3752 return os::socket_close(fd); |
0 | 3753 JVM_END |
3754 | |
3755 | |
3756 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3757 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3758 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3759 return os::socket_shutdown(fd, howto); |
0 | 3760 JVM_END |
3761 | |
3762 | |
3763 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3764 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3765 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3766 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3767 JVM_END |
3768 | |
3769 | |
3770 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3771 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3772 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3773 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3774 JVM_END |
3775 | |
3776 | |
3777 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3778 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3779 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3780 return os::timeout(fd, timeout); |
0 | 3781 JVM_END |
3782 | |
3783 | |
3784 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3785 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3786 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3787 return os::listen(fd, count); |
0 | 3788 JVM_END |
3789 | |
3790 | |
3791 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3792 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3793 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3794 return os::connect(fd, him, (socklen_t)len); |
0 | 3795 JVM_END |
3796 | |
3797 | |
3798 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3799 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3800 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3801 return os::bind(fd, him, (socklen_t)len); |
0 | 3802 JVM_END |
3803 | |
3804 | |
3805 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3806 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3807 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3808 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3809 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3810 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3811 return result; |
0 | 3812 JVM_END |
3813 | |
3814 | |
3815 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3816 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3817 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3818 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3819 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
|
3820 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3821 return result; |
0 | 3822 JVM_END |
3823 | |
3824 | |
3825 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3826 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3827 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3828 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3829 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
|
3830 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3831 return result; |
0 | 3832 JVM_END |
3833 | |
3834 | |
3835 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3836 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3837 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3838 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3839 JVM_END |
3840 | |
3841 | |
3842 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3843 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3844 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3845 return os::socket_available(fd, pbytes); |
0 | 3846 JVM_END |
3847 | |
3848 | |
3849 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3850 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3851 //%note jvm_r6 | |
4717
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3852 socklen_t socklen = (socklen_t)(*optlen); |
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|
3853 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
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3854 *optlen = (int)socklen; |
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|
3855 return result; |
0 | 3856 JVM_END |
3857 | |
3858 | |
3859 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3860 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3861 //%note jvm_r6 | |
4717
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3862 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3863 JVM_END |
3864 | |
4717
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|
3865 |
0 | 3866 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3867 JVMWrapper("JVM_GetHostName"); | |
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|
3868 return os::get_host_name(name, namelen); |
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|
3869 JVM_END |
0 | 3870 |
4717
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3871 |
0 | 3872 // Library support /////////////////////////////////////////////////////////////////////////// |
3873 | |
3874 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3875 //%note jvm_ct | |
3876 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3877 char ebuf[1024]; | |
3878 void *load_result; | |
3879 { | |
3880 ThreadToNativeFromVM ttnfvm(thread); | |
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|
3881 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3882 } |
3883 if (load_result == NULL) { | |
3884 char msg[1024]; | |
3885 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3886 // Since 'ebuf' may contain a string encoded using | |
3887 // platform encoding scheme, we need to pass | |
3888 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3889 // as the last argument. See bug 6367357. | |
3890 Handle h_exception = | |
3891 Exceptions::new_exception(thread, | |
3892 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3893 msg, Exceptions::unsafe_to_utf8); | |
3894 | |
3895 THROW_HANDLE_0(h_exception); | |
3896 } | |
3897 return load_result; | |
3898 JVM_END | |
3899 | |
3900 | |
3901 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3902 JVMWrapper("JVM_UnloadLibrary"); | |
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|
3903 os::dll_unload(handle); |
0 | 3904 JVM_END |
3905 | |
3906 | |
3907 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3908 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
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3909 return os::dll_lookup(handle, name); |
0 | 3910 JVM_END |
3911 | |
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3912 |
0 | 3913 // Floating point support //////////////////////////////////////////////////////////////////// |
3914 | |
3915 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3916 JVMWrapper("JVM_IsNaN"); | |
3917 return g_isnan(a); | |
3918 JVM_END | |
3919 | |
3920 | |
3921 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3922 | |
3923 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3924 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3925 return Threads::is_supported_jni_version_including_1_1(version); | |
3926 JVM_END | |
3927 | |
3928 | |
3929 // String support /////////////////////////////////////////////////////////////////////////// | |
3930 | |
3931 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3932 JVMWrapper("JVM_InternString"); | |
3933 JvmtiVMObjectAllocEventCollector oam; | |
3934 if (str == NULL) return NULL; | |
3935 oop string = JNIHandles::resolve_non_null(str); | |
3936 oop result = StringTable::intern(string, CHECK_NULL); | |
3937 return (jstring) JNIHandles::make_local(env, result); | |
3938 JVM_END | |
3939 | |
3940 | |
3941 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3942 | |
3943 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3944 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3945 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3946 // that only works with java threads. | |
3947 | |
3948 | |
3949 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3950 VM_Exit::block_if_vm_exited(); | |
3951 JVMWrapper("JVM_RawMonitorCreate"); | |
3952 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3953 } | |
3954 | |
3955 | |
3956 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3957 VM_Exit::block_if_vm_exited(); | |
3958 JVMWrapper("JVM_RawMonitorDestroy"); | |
3959 delete ((Mutex*) mon); | |
3960 } | |
3961 | |
3962 | |
3963 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3964 VM_Exit::block_if_vm_exited(); | |
3965 JVMWrapper("JVM_RawMonitorEnter"); | |
3966 ((Mutex*) mon)->jvm_raw_lock(); | |
3967 return 0; | |
3968 } | |
3969 | |
3970 | |
3971 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3972 VM_Exit::block_if_vm_exited(); | |
3973 JVMWrapper("JVM_RawMonitorExit"); | |
3974 ((Mutex*) mon)->jvm_raw_unlock(); | |
3975 } | |
3976 | |
3977 | |
3978 // Support for Serialization | |
3979 | |
3980 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3981 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3982 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3983 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3984 | |
3985 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3986 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3987 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3988 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3989 | |
3990 | |
3991 void initialize_converter_functions() { | |
3992 if (JDK_Version::is_gte_jdk14x_version()) { | |
3993 // These functions only exist for compatibility with 1.3.1 and earlier | |
3994 return; | |
3995 } | |
3996 | |
3997 // called from universe_post_init() | |
3998 assert( | |
3999 int_bits_to_float_fn == NULL && | |
4000 long_bits_to_double_fn == NULL && | |
4001 float_to_int_bits_fn == NULL && | |
4002 double_to_long_bits_fn == NULL , | |
4003 "initialization done twice" | |
4004 ); | |
4005 // initialize | |
4006 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
4007 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
4008 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
4009 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
4010 // verify | |
4011 assert( | |
4012 int_bits_to_float_fn != NULL && | |
4013 long_bits_to_double_fn != NULL && | |
4014 float_to_int_bits_fn != NULL && | |
4015 double_to_long_bits_fn != NULL , | |
4016 "initialization failed" | |
4017 ); | |
4018 } | |
4019 | |
4020 | |
4021 | |
4022 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4023 | |
18051 | 4024 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
4025 Handle loader, Handle protection_domain, | |
4026 jboolean throwError, TRAPS) { | |
0 | 4027 // Security Note: |
4028 // The Java level wrapper will perform the necessary security check allowing | |
18051 | 4029 // us to pass the NULL as the initiating class loader. The VM is responsible for |
4030 // the checkPackageAccess relative to the initiating class loader via the | |
4031 // protection_domain. The protection_domain is passed as NULL by the java code | |
4032 // if there is no security manager in 3-arg Class.forName(). | |
6725
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diff
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|
4033 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
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diff
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|
4034 |
0 | 4035 KlassHandle klass_handle(THREAD, klass); |
4036 // Check if we should initialize the class | |
4037 if (init && klass_handle->oop_is_instance()) { | |
4038 klass_handle->initialize(CHECK_NULL); | |
4039 } | |
4040 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4041 } | |
4042 | |
4043 | |
4044 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4045 | |
4046 #ifndef PRODUCT | |
4047 | |
4048 extern "C" { | |
4049 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4050 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4051 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4052 } | |
4053 | |
4054 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4055 JVMWrapper("JVM_AccessBoolVMFlag"); | |
12322
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diff
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|
4056 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4057 JVM_END |
4058 | |
4059 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4060 JVMWrapper("JVM_AccessVMIntFlag"); | |
4061 intx v; | |
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diff
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|
4062 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4063 *value = (jint)v; |
4064 return result; | |
4065 JVM_END | |
4066 | |
4067 | |
4068 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4069 JVMWrapper("JVM_VMBreakPoint"); | |
4070 oop the_obj = JNIHandles::resolve(obj); | |
4071 BREAKPOINT; | |
4072 JVM_END | |
4073 | |
4074 | |
4075 #endif | |
4076 | |
4077 | |
4078 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4079 | |
4080 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4081 JVMWrapper("JVM_InvokeMethod"); | |
4082 Handle method_handle; | |
4083 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4084 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4085 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4086 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4087 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4088 jobject res = JNIHandles::make_local(env, result); | |
4089 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4090 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4091 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4092 if (java_lang_Class::is_primitive(ret_type)) { | |
4093 // Only for primitive type vm allocates memory for java object. | |
4094 // See box() method. | |
4095 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4096 } | |
4097 } | |
4098 return res; | |
4099 } else { | |
4100 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4101 } | |
4102 JVM_END | |
4103 | |
4104 | |
4105 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4106 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4107 oop constructor_mirror = JNIHandles::resolve(c); | |
4108 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4109 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4110 jobject res = JNIHandles::make_local(env, result); | |
4111 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4112 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4113 } | |
4114 return res; | |
4115 JVM_END | |
4116 | |
4117 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4118 | |
4119 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4120 JVMWrapper("JVM_SupportsCX8"); | |
4121 return VM_Version::supports_cx8(); | |
4122 JVM_END | |
4123 | |
4124 | |
4125 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4126 JVMWrapper("JVM_CX8Field"); | |
4127 jlong res; | |
4128 oop o = JNIHandles::resolve(obj); | |
4129 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4130 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4131 | |
4132 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4133 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4134 | |
4135 return res == oldVal; | |
4136 JVM_END | |
4137 | |
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4138 // DTrace /////////////////////////////////////////////////////////////////// |
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|
4139 |
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4140 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4141 JVMWrapper("JVM_DTraceGetVersion"); |
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4142 return (jint)JVM_TRACING_DTRACE_VERSION; |
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|
4143 JVM_END |
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|
4144 |
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|
4145 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4146 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4147 JVM_DTraceProvider* providers)) |
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|
4148 JVMWrapper("JVM_DTraceActivate"); |
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|
4149 return DTraceJSDT::activate( |
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|
4150 version, module_name, providers_count, providers, CHECK_0); |
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|
4151 JVM_END |
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4152 |
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4153 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4154 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4155 return DTraceJSDT::is_probe_enabled(method); |
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4156 JVM_END |
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|
4157 |
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4158 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4159 JVMWrapper("JVM_DTraceDispose"); |
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4160 DTraceJSDT::dispose(handle); |
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4161 JVM_END |
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4162 |
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4163 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4164 JVMWrapper("JVM_DTraceIsSupported"); |
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4165 return DTraceJSDT::is_supported(); |
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4166 JVM_END |
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4167 |
0 | 4168 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4169 // jvmti agent threads, and JNI attaching threads are skipped) | |
4170 // See CR 6404306 regarding JNI attaching threads | |
4171 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4172 ResourceMark rm(THREAD); | |
4173 ThreadsListEnumerator tle(THREAD, false, false); | |
4174 JvmtiVMObjectAllocEventCollector oam; | |
4175 | |
4176 int num_threads = tle.num_threads(); | |
1142 | 4177 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4178 objArrayHandle threads_ah(THREAD, r); |
4179 | |
4180 for (int i = 0; i < num_threads; i++) { | |
4181 Handle h = tle.get_threadObj(i); | |
4182 threads_ah->obj_at_put(i, h()); | |
4183 } | |
4184 | |
4185 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4186 JVM_END | |
4187 | |
4188 | |
4189 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4190 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4191 // the corresponding entry in the given threads array | |
4192 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4193 JVMWrapper("JVM_DumpThreads"); | |
4194 JvmtiVMObjectAllocEventCollector oam; | |
4195 | |
4196 // Check if threads is null | |
4197 if (threads == NULL) { | |
4198 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4199 } | |
4200 | |
4201 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4202 objArrayHandle ah(THREAD, a); | |
4203 int num_threads = ah->length(); | |
4204 // check if threads is non-empty array | |
4205 if (num_threads == 0) { | |
4206 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4207 } | |
4208 | |
4209 // check if threads is not an array of objects of Thread class | |
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4210 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4211 if (k != SystemDictionary::Thread_klass()) { |
0 | 4212 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4213 } | |
4214 | |
4215 ResourceMark rm(THREAD); | |
4216 | |
4217 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4218 for (int i = 0; i < num_threads; i++) { | |
4219 oop thread_obj = ah->obj_at(i); | |
4220 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4221 thread_handle_array->append(h); | |
4222 } | |
4223 | |
4224 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4225 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4226 | |
4227 JVM_END | |
4228 | |
4229 // JVM monitoring and management support | |
4230 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4231 return Management::get_jmm_interface(version); | |
4232 JVM_END | |
4233 | |
4234 // com.sun.tools.attach.VirtualMachine agent properties support | |
4235 // | |
4236 // Initialize the agent properties with the properties maintained in the VM | |
4237 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4238 JVMWrapper("JVM_InitAgentProperties"); | |
4239 ResourceMark rm; | |
4240 | |
4241 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4242 | |
4243 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4244 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4245 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4246 return properties; | |
4247 JVM_END | |
4248 | |
4249 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4250 { | |
4251 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4252 JvmtiVMObjectAllocEventCollector oam; | |
4253 | |
4254 if (ofClass == NULL) { | |
4255 return NULL; | |
4256 } | |
4257 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4258 // Special handling for primitive objects | |
4259 if (java_lang_Class::is_primitive(mirror())) { | |
4260 return NULL; | |
4261 } | |
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4262 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4263 if (!k->oop_is_instance()) { |
0 | 4264 return NULL; |
4265 } | |
4266 instanceKlassHandle ik_h(THREAD, k); | |
4267 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4268 if (encl_method_class_idx == 0) { | |
4269 return NULL; | |
4270 } | |
1142 | 4271 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4272 objArrayHandle dest(THREAD, dest_o); |
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4273 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4274 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4275 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4276 if (encl_method_method_idx != 0) { | |
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4277 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4278 extract_low_short_from_int( |
4279 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4280 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4281 dest->obj_at_put(1, str()); | |
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4282 sym = ik_h->constants()->symbol_at( |
0 | 4283 extract_high_short_from_int( |
4284 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4285 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4286 dest->obj_at_put(2, str()); | |
4287 } | |
4288 return (jobjectArray) JNIHandles::make_local(dest()); | |
4289 } | |
4290 JVM_END | |
4291 | |
4292 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4293 jint javaThreadState)) | |
4294 { | |
4295 // If new thread states are added in future JDK and VM versions, | |
4296 // this should check if the JDK version is compatible with thread | |
4297 // states supported by the VM. Return NULL if not compatible. | |
4298 // | |
4299 // This function must map the VM java_lang_Thread::ThreadStatus | |
4300 // to the Java thread state that the JDK supports. | |
4301 // | |
4302 | |
4303 typeArrayHandle values_h; | |
4304 switch (javaThreadState) { | |
4305 case JAVA_THREAD_STATE_NEW : { | |
4306 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4307 values_h = typeArrayHandle(THREAD, r); | |
4308 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4309 break; | |
4310 } | |
4311 case JAVA_THREAD_STATE_RUNNABLE : { | |
4312 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4313 values_h = typeArrayHandle(THREAD, r); | |
4314 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4315 break; | |
4316 } | |
4317 case JAVA_THREAD_STATE_BLOCKED : { | |
4318 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4319 values_h = typeArrayHandle(THREAD, r); | |
4320 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4321 break; | |
4322 } | |
4323 case JAVA_THREAD_STATE_WAITING : { | |
4324 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4325 values_h = typeArrayHandle(THREAD, r); | |
4326 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4327 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4328 break; | |
4329 } | |
4330 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4331 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4332 values_h = typeArrayHandle(THREAD, r); | |
4333 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4334 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4335 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4336 break; | |
4337 } | |
4338 case JAVA_THREAD_STATE_TERMINATED : { | |
4339 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4340 values_h = typeArrayHandle(THREAD, r); | |
4341 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4342 break; | |
4343 } | |
4344 default: | |
4345 // Unknown state - probably incompatible JDK version | |
4346 return NULL; | |
4347 } | |
4348 | |
4349 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4350 } | |
4351 JVM_END | |
4352 | |
4353 | |
4354 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4355 jint javaThreadState, | |
4356 jintArray values)) | |
4357 { | |
4358 // If new thread states are added in future JDK and VM versions, | |
4359 // this should check if the JDK version is compatible with thread | |
4360 // states supported by the VM. Return NULL if not compatible. | |
4361 // | |
4362 // This function must map the VM java_lang_Thread::ThreadStatus | |
4363 // to the Java thread state that the JDK supports. | |
4364 // | |
4365 | |
4366 ResourceMark rm; | |
4367 | |
4368 // Check if threads is null | |
4369 if (values == NULL) { | |
4370 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4371 } | |
4372 | |
4373 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4374 typeArrayHandle values_h(THREAD, v); | |
4375 | |
4376 objArrayHandle names_h; | |
4377 switch (javaThreadState) { | |
4378 case JAVA_THREAD_STATE_NEW : { | |
4379 assert(values_h->length() == 1 && | |
4380 values_h->int_at(0) == java_lang_Thread::NEW, | |
4381 "Invalid threadStatus value"); | |
4382 | |
1142 | 4383 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4384 1, /* only 1 substate */ |
4385 CHECK_NULL); | |
4386 names_h = objArrayHandle(THREAD, r); | |
4387 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4388 names_h->obj_at_put(0, name()); | |
4389 break; | |
4390 } | |
4391 case JAVA_THREAD_STATE_RUNNABLE : { | |
4392 assert(values_h->length() == 1 && | |
4393 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4394 "Invalid threadStatus value"); | |
4395 | |
1142 | 4396 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4397 1, /* only 1 substate */ |
4398 CHECK_NULL); | |
4399 names_h = objArrayHandle(THREAD, r); | |
4400 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4401 names_h->obj_at_put(0, name()); | |
4402 break; | |
4403 } | |
4404 case JAVA_THREAD_STATE_BLOCKED : { | |
4405 assert(values_h->length() == 1 && | |
4406 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4407 "Invalid threadStatus value"); | |
4408 | |
1142 | 4409 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4410 1, /* only 1 substate */ |
4411 CHECK_NULL); | |
4412 names_h = objArrayHandle(THREAD, r); | |
4413 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4414 names_h->obj_at_put(0, name()); | |
4415 break; | |
4416 } | |
4417 case JAVA_THREAD_STATE_WAITING : { | |
4418 assert(values_h->length() == 2 && | |
4419 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4420 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4421 "Invalid threadStatus value"); | |
1142 | 4422 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4423 2, /* number of substates */ |
4424 CHECK_NULL); | |
4425 names_h = objArrayHandle(THREAD, r); | |
4426 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4427 CHECK_NULL); | |
4428 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4429 CHECK_NULL); | |
4430 names_h->obj_at_put(0, name0()); | |
4431 names_h->obj_at_put(1, name1()); | |
4432 break; | |
4433 } | |
4434 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4435 assert(values_h->length() == 3 && | |
4436 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4437 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4438 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4439 "Invalid threadStatus value"); | |
1142 | 4440 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4441 3, /* number of substates */ |
4442 CHECK_NULL); | |
4443 names_h = objArrayHandle(THREAD, r); | |
4444 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4445 CHECK_NULL); | |
4446 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4447 CHECK_NULL); | |
4448 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4449 CHECK_NULL); | |
4450 names_h->obj_at_put(0, name0()); | |
4451 names_h->obj_at_put(1, name1()); | |
4452 names_h->obj_at_put(2, name2()); | |
4453 break; | |
4454 } | |
4455 case JAVA_THREAD_STATE_TERMINATED : { | |
4456 assert(values_h->length() == 1 && | |
4457 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4458 "Invalid threadStatus value"); | |
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("TERMINATED", CHECK_NULL); | |
4464 names_h->obj_at_put(0, name()); | |
4465 break; | |
4466 } | |
4467 default: | |
4468 // Unknown state - probably incompatible JDK version | |
4469 return NULL; | |
4470 } | |
4471 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4472 } | |
4473 JVM_END | |
4474 | |
4475 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4476 { | |
4477 memset(info, 0, sizeof(info_size)); | |
4478 | |
4479 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4480 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4481 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4482 | |
4483 // when we add a new capability in the jvm_version_info struct, we should also | |
4484 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4485 // counter defined in runtimeService.cpp. | |
4486 info->is_attachable = AttachListener::is_attach_supported(); | |
4487 } | |
4488 JVM_END |