Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 20261:27188ae8bbbb
8035648: Don't use Handle in java_lang_String::print
Reviewed-by: coleenp, pliden
author | stefank |
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date | Thu, 27 Feb 2014 10:34:55 +0100 |
parents | ce8f6bb717c9 |
children | 6e0cb14ce59b |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
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54 #include "runtime/orderAccess.inline.hpp" |
1972 | 55 #include "runtime/os.hpp" |
56 #include "runtime/perfData.hpp" | |
57 #include "runtime/reflection.hpp" | |
58 #include "runtime/vframe.hpp" | |
59 #include "runtime/vm_operations.hpp" | |
60 #include "services/attachListener.hpp" | |
61 #include "services/management.hpp" | |
62 #include "services/threadService.hpp" | |
10405 | 63 #include "trace/tracing.hpp" |
1972 | 64 #include "utilities/copy.hpp" |
65 #include "utilities/defaultStream.hpp" | |
66 #include "utilities/dtrace.hpp" | |
67 #include "utilities/events.hpp" | |
68 #include "utilities/histogram.hpp" | |
69 #include "utilities/top.hpp" | |
70 #include "utilities/utf8.hpp" | |
71 #ifdef TARGET_OS_FAMILY_linux | |
72 # include "jvm_linux.h" | |
73 #endif | |
74 #ifdef TARGET_OS_FAMILY_solaris | |
75 # include "jvm_solaris.h" | |
76 #endif | |
77 #ifdef TARGET_OS_FAMILY_windows | |
78 # include "jvm_windows.h" | |
79 #endif | |
14411 | 80 #ifdef TARGET_OS_FAMILY_aix |
81 # include "jvm_aix.h" | |
82 #endif | |
3960 | 83 #ifdef TARGET_OS_FAMILY_bsd |
84 # include "jvm_bsd.h" | |
85 #endif | |
1972 | 86 |
0 | 87 #include <errno.h> |
88 | |
4006 | 89 #ifndef USDT2 |
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90 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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91 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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92 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 93 #endif /* !USDT2 */ |
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94 |
0 | 95 /* |
96 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
97 such ctors and calls MUST NOT come between an oop declaration/init and its | |
98 usage because if objects are move this may cause various memory stomps, bus | |
99 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
100 failures": | |
101 | |
102 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
103 JVMWrapper("JVM_GetClassDeclaredFields"); | |
104 | |
105 // Object address to be held directly in mirror & not visible to GC | |
106 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
107 | |
108 // If this ctor can hit a safepoint, moving objects around, then | |
109 ComplexConstructor foo; | |
110 | |
111 // Boom! mirror may point to JUNK instead of the intended object | |
112 (some dereference of mirror) | |
113 | |
114 // Here's another call that may block for GC, making mirror stale | |
115 MutexLocker ml(some_lock); | |
116 | |
117 // And here's an initializer that can result in a stale oop | |
118 // all in one step. | |
119 oop o = call_that_can_throw_exception(TRAPS); | |
120 | |
121 | |
122 The solution is to keep the oop declaration BELOW the ctor or function | |
123 call that might cause a GC, do another resolve to reassign the oop, or | |
124 consider use of a Handle instead of an oop so there is immunity from object | |
125 motion. But note that the "QUICK" entries below do not have a handlemark | |
126 and thus can only support use of handles passed in. | |
127 */ | |
128 | |
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129 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 130 ResourceMark rm; |
131 int line_number = -1; | |
132 const char * source_file = NULL; | |
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133 const char * trace = "explicit"; |
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134 InstanceKlass* caller = NULL; |
0 | 135 JavaThread* jthread = JavaThread::current(); |
136 if (jthread->has_last_Java_frame()) { | |
137 vframeStream vfst(jthread); | |
138 | |
139 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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140 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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141 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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142 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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143 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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144 |
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145 Method* last_caller = NULL; |
0 | 146 |
147 while (!vfst.at_end()) { | |
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148 Method* m = vfst.method(); |
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149 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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150 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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151 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 152 break; |
153 } | |
154 last_caller = m; | |
155 vfst.next(); | |
156 } | |
157 // if this is called from Class.forName0 and that is called from Class.forName, | |
158 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
159 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
160 bool found_it = false; | |
161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 163 vfst.method()->name() == vmSymbols::forName0_name()) { |
164 vfst.next(); | |
165 if (!vfst.at_end() && | |
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166 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 167 vfst.method()->name() == vmSymbols::forName_name()) { |
168 vfst.next(); | |
169 found_it = true; | |
170 } | |
171 } else if (last_caller != NULL && | |
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172 last_caller->method_holder()->name() == |
0 | 173 vmSymbols::java_lang_ClassLoader() && |
174 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
175 last_caller->name() == vmSymbols::loadClass_name())) { | |
176 found_it = true; | |
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177 } else if (!vfst.at_end()) { |
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178 if (vfst.method()->is_native()) { |
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179 // JNI call |
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180 found_it = true; |
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181 } |
0 | 182 } |
183 if (found_it && !vfst.at_end()) { | |
184 // found the caller | |
185 caller = vfst.method()->method_holder(); | |
186 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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187 if (line_number == -1) { |
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188 // show method name if it's a native method |
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189 trace = vfst.method()->name_and_sig_as_C_string(); |
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190 } |
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191 Symbol* s = caller->source_file_name(); |
0 | 192 if (s != NULL) { |
193 source_file = s->as_C_string(); | |
194 } | |
195 } | |
196 } | |
197 if (caller != NULL) { | |
198 if (to_class != caller) { | |
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199 const char * from = caller->external_name(); |
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200 const char * to = to_class->external_name(); |
0 | 201 // print in a single call to reduce interleaving between threads |
202 if (source_file != NULL) { | |
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203 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 204 } else { |
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205 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 206 } |
207 } | |
208 } | |
209 } | |
210 | |
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211 void trace_class_resolution(Klass* to_class) { |
0 | 212 EXCEPTION_MARK; |
213 trace_class_resolution_impl(to_class, THREAD); | |
214 if (HAS_PENDING_EXCEPTION) { | |
215 CLEAR_PENDING_EXCEPTION; | |
216 } | |
217 } | |
218 | |
219 // Wrapper to trace JVM functions | |
220 | |
221 #ifdef ASSERT | |
222 class JVMTraceWrapper : public StackObj { | |
223 public: | |
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224 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
0 | 225 if (TraceJVMCalls) { |
226 va_list ap; | |
227 va_start(ap, format); | |
228 tty->print("JVM "); | |
229 tty->vprint_cr(format, ap); | |
230 va_end(ap); | |
231 } | |
232 } | |
233 }; | |
234 | |
235 Histogram* JVMHistogram; | |
236 volatile jint JVMHistogram_lock = 0; | |
237 | |
238 class JVMHistogramElement : public HistogramElement { | |
239 public: | |
240 JVMHistogramElement(const char* name); | |
241 }; | |
242 | |
243 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
244 _name = elementName; | |
245 uintx count = 0; | |
246 | |
247 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
248 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
249 count +=1; | |
250 if ( (WarnOnStalledSpinLock > 0) | |
251 && (count % WarnOnStalledSpinLock == 0)) { | |
252 warning("JVMHistogram_lock seems to be stalled"); | |
253 } | |
254 } | |
255 } | |
256 | |
257 if(JVMHistogram == NULL) | |
258 JVMHistogram = new Histogram("JVM Call Counts",100); | |
259 | |
260 JVMHistogram->add_element(this); | |
261 Atomic::dec(&JVMHistogram_lock); | |
262 } | |
263 | |
264 #define JVMCountWrapper(arg) \ | |
265 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
266 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
267 | |
268 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
269 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
270 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
271 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
272 #else | |
273 #define JVMWrapper(arg1) | |
274 #define JVMWrapper2(arg1, arg2) | |
275 #define JVMWrapper3(arg1, arg2, arg3) | |
276 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
277 #endif | |
278 | |
279 | |
280 // Interface version ///////////////////////////////////////////////////////////////////// | |
281 | |
282 | |
283 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
284 return JVM_INTERFACE_VERSION; | |
285 JVM_END | |
286 | |
287 | |
288 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
289 | |
290 | |
291 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
292 JVMWrapper("JVM_CurrentTimeMillis"); | |
293 return os::javaTimeMillis(); | |
294 JVM_END | |
295 | |
296 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
297 JVMWrapper("JVM_NanoTime"); | |
298 return os::javaTimeNanos(); | |
299 JVM_END | |
300 | |
301 | |
302 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
303 jobject dst, jint dst_pos, jint length)) | |
304 JVMWrapper("JVM_ArrayCopy"); | |
305 // Check if we have null pointers | |
306 if (src == NULL || dst == NULL) { | |
307 THROW(vmSymbols::java_lang_NullPointerException()); | |
308 } | |
309 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
310 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
311 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
312 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
313 // Do copy | |
6983 | 314 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 315 JVM_END |
316 | |
317 | |
318 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
319 JavaValue r(T_OBJECT); | |
320 // public synchronized Object put(Object key, Object value); | |
321 HandleMark hm(THREAD); | |
322 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
323 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
324 JavaCalls::call_virtual(&r, | |
325 props, | |
1142 | 326 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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327 vmSymbols::put_name(), |
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328 vmSymbols::object_object_object_signature(), |
0 | 329 key_str, |
330 value_str, | |
331 THREAD); | |
332 } | |
333 | |
334 | |
335 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
336 | |
337 | |
338 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
339 JVMWrapper("JVM_InitProperties"); | |
340 ResourceMark rm; | |
341 | |
342 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
343 | |
344 // System property list includes both user set via -D option and | |
345 // jvm system specific properties. | |
346 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
347 PUTPROP(props, p->key(), p->value()); | |
348 } | |
349 | |
350 // Convert the -XX:MaxDirectMemorySize= command line flag | |
351 // to the sun.nio.MaxDirectMemorySize property. | |
352 // Do this after setting user properties to prevent people | |
353 // from setting the value with a -D option, as requested. | |
354 { | |
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355 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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357 } else { |
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358 char as_chars[256]; |
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359 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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360 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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361 } |
0 | 362 } |
363 | |
364 // JVM monitoring and management support | |
365 // Add the sun.management.compiler property for the compiler's name | |
366 { | |
367 #undef CSIZE | |
368 #if defined(_LP64) || defined(_WIN64) | |
369 #define CSIZE "64-Bit " | |
370 #else | |
371 #define CSIZE | |
372 #endif // 64bit | |
373 | |
374 #ifdef TIERED | |
375 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
376 #else | |
377 #if defined(COMPILER1) | |
378 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
379 #elif defined(COMPILER2) | |
380 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
381 #else | |
382 const char* compiler_name = ""; | |
383 #endif // compilers | |
384 #endif // TIERED | |
385 | |
386 if (*compiler_name != '\0' && | |
387 (Arguments::mode() != Arguments::_int)) { | |
388 PUTPROP(props, "sun.management.compiler", compiler_name); | |
389 } | |
390 } | |
391 | |
392 return properties; | |
393 JVM_END | |
394 | |
395 | |
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396 /* |
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397 * Return the temporary directory that the VM uses for the attach |
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398 * and perf data files. |
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399 * |
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400 * It is important that this directory is well-known and the |
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401 * same for all VM instances. It cannot be affected by configuration |
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402 * variables such as java.io.tmpdir. |
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403 */ |
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404 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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405 JVMWrapper("JVM_GetTemporaryDirectory"); |
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406 HandleMark hm(THREAD); |
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407 const char* temp_dir = os::get_temp_directory(); |
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408 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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409 return (jstring) JNIHandles::make_local(env, h()); |
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410 JVM_END |
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411 |
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412 |
0 | 413 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
414 | |
415 extern volatile jint vm_created; | |
416 | |
417 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
418 if (vm_created != 0 && (code == 0)) { | |
419 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
420 Universe::run_finalizers_on_exit(); | |
421 } | |
422 before_exit(thread); | |
423 vm_exit(code); | |
424 JVM_END | |
425 | |
426 | |
427 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
428 before_exit(thread); | |
429 vm_exit(code); | |
430 JVM_END | |
431 | |
432 | |
433 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
434 register_on_exit_function(func); | |
435 JVM_END | |
436 | |
437 | |
438 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
439 JVMWrapper("JVM_GC"); | |
440 if (!DisableExplicitGC) { | |
441 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
442 } | |
443 JVM_END | |
444 | |
445 | |
446 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
447 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
448 return Universe::heap()->millis_since_last_gc(); | |
449 JVM_END | |
450 | |
451 | |
452 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
453 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
454 JVM_END | |
455 | |
456 | |
457 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
458 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
459 JVM_END | |
460 | |
461 static inline jlong convert_size_t_to_jlong(size_t val) { | |
462 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
463 NOT_LP64 (return (jlong)val;) | |
464 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
465 } | |
466 | |
467 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
468 JVMWrapper("JVM_TotalMemory"); | |
469 size_t n = Universe::heap()->capacity(); | |
470 return convert_size_t_to_jlong(n); | |
471 JVM_END | |
472 | |
473 | |
474 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
475 JVMWrapper("JVM_FreeMemory"); | |
476 CollectedHeap* ch = Universe::heap(); | |
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477 size_t n; |
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478 { |
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479 MutexLocker x(Heap_lock); |
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480 n = ch->capacity() - ch->used(); |
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481 } |
0 | 482 return convert_size_t_to_jlong(n); |
483 JVM_END | |
484 | |
485 | |
486 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
487 JVMWrapper("JVM_MaxMemory"); | |
488 size_t n = Universe::heap()->max_capacity(); | |
489 return convert_size_t_to_jlong(n); | |
490 JVM_END | |
491 | |
492 | |
493 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
494 JVMWrapper("JVM_ActiveProcessorCount"); | |
495 return os::active_processor_count(); | |
496 JVM_END | |
497 | |
498 | |
499 | |
500 // java.lang.Throwable ////////////////////////////////////////////////////// | |
501 | |
502 | |
503 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
504 JVMWrapper("JVM_FillInStackTrace"); | |
505 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
506 java_lang_Throwable::fill_in_stack_trace(exception); | |
507 JVM_END | |
508 | |
509 | |
510 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
511 JVMWrapper("JVM_GetStackTraceDepth"); | |
512 oop exception = JNIHandles::resolve(throwable); | |
513 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
514 JVM_END | |
515 | |
516 | |
517 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
518 JVMWrapper("JVM_GetStackTraceElement"); | |
519 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
520 oop exception = JNIHandles::resolve(throwable); | |
521 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
522 return JNIHandles::make_local(env, element); | |
523 JVM_END | |
524 | |
525 | |
526 // java.lang.Object /////////////////////////////////////////////// | |
527 | |
528 | |
529 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
530 JVMWrapper("JVM_IHashCode"); | |
531 // as implemented in the classic virtual machine; return 0 if object is NULL | |
532 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
533 JVM_END | |
534 | |
535 | |
536 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
537 JVMWrapper("JVM_MonitorWait"); | |
538 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
539 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
540 if (JvmtiExport::should_post_monitor_wait()) { | |
541 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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542 |
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543 // The current thread already owns the monitor and it has not yet |
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544 // been added to the wait queue so the current thread cannot be |
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545 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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546 // event handler cannot accidentally consume an unpark() meant for |
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547 // the ParkEvent associated with this ObjectMonitor. |
0 | 548 } |
549 ObjectSynchronizer::wait(obj, ms, CHECK); | |
550 JVM_END | |
551 | |
552 | |
553 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
554 JVMWrapper("JVM_MonitorNotify"); | |
555 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
556 ObjectSynchronizer::notify(obj, CHECK); | |
557 JVM_END | |
558 | |
559 | |
560 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
561 JVMWrapper("JVM_MonitorNotifyAll"); | |
562 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
563 ObjectSynchronizer::notifyall(obj, CHECK); | |
564 JVM_END | |
565 | |
566 | |
567 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
568 JVMWrapper("JVM_Clone"); | |
569 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
570 const KlassHandle klass (THREAD, obj->klass()); | |
571 JvmtiVMObjectAllocEventCollector oam; | |
572 | |
573 #ifdef ASSERT | |
574 // Just checking that the cloneable flag is set correct | |
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575 if (obj->is_array()) { |
0 | 576 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
577 } else { | |
578 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 579 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 580 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
581 } | |
582 #endif | |
583 | |
584 // Check if class of obj supports the Cloneable interface. | |
585 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
586 if (!klass->is_cloneable()) { | |
587 ResourceMark rm(THREAD); | |
588 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
589 } | |
590 | |
591 // Make shallow object copy | |
592 const int size = obj->size(); | |
593 oop new_obj = NULL; | |
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594 if (obj->is_array()) { |
0 | 595 const int length = ((arrayOop)obj())->length(); |
596 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
597 } else { | |
598 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
599 } | |
600 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
601 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
602 // be suspended in the middle of copying the pointer and end up with parts | |
603 // of two different pointers in the field. Subsequent dereferences will crash. | |
604 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
605 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
606 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
607 // The same is true of StubRoutines::object_copy and the various oop_copy | |
608 // variants, and of the code generated by the inline_native_clone intrinsic. | |
609 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
610 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
611 (size_t)align_object_size(size) / HeapWordsPerLong); | |
612 // Clear the header | |
613 new_obj->init_mark(); | |
614 | |
615 // Store check (mark entire object and let gc sort it out) | |
616 BarrierSet* bs = Universe::heap()->barrier_set(); | |
617 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
618 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
619 | |
620 // Caution: this involves a java upcall, so the clone should be | |
621 // "gc-robust" by this stage. | |
622 if (klass->has_finalizer()) { | |
623 assert(obj->is_instance(), "should be instanceOop"); | |
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624 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 625 } |
626 | |
627 return JNIHandles::make_local(env, oop(new_obj)); | |
628 JVM_END | |
629 | |
630 // java.lang.Compiler //////////////////////////////////////////////////// | |
631 | |
632 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
633 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
634 // functions are all silently ignored unless JVM warnings are printed. | |
635 | |
636 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
637 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
638 JVM_END | |
639 | |
640 | |
641 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
642 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
643 return JNI_FALSE; | |
644 JVM_END | |
645 | |
646 | |
647 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
648 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
649 return JNI_FALSE; | |
650 JVM_END | |
651 | |
652 | |
653 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
654 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
655 return JNI_FALSE; | |
656 JVM_END | |
657 | |
658 | |
659 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
660 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
661 return NULL; | |
662 JVM_END | |
663 | |
664 | |
665 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
666 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
667 JVM_END | |
668 | |
669 | |
670 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
671 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
672 JVM_END | |
673 | |
674 | |
675 | |
676 // Error message support ////////////////////////////////////////////////////// | |
677 | |
678 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
679 JVMWrapper("JVM_GetLastErrorString"); | |
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680 return (jint)os::lasterror(buf, len); |
0 | 681 JVM_END |
682 | |
683 | |
684 // java.io.File /////////////////////////////////////////////////////////////// | |
685 | |
686 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
687 JVMWrapper2("JVM_NativePath (%s)", path); | |
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688 return os::native_path(path); |
0 | 689 JVM_END |
690 | |
691 | |
692 // Misc. class handling /////////////////////////////////////////////////////////// | |
693 | |
694 | |
695 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
696 JVMWrapper("JVM_GetCallerClass"); | |
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697 |
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698 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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699 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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700 // temporarily for existing code to use until a replacement API is defined. |
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701 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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702 Klass* k = thread->security_get_caller_class(depth); |
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703 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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704 } |
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705 |
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706 // Getting the class of the caller frame. |
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707 // |
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708 // The call stack at this point looks something like this: |
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709 // |
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710 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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711 // [1] [ @CallerSensitive API.method ] |
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712 // [.] [ (skipped intermediate frames) ] |
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713 // [n] [ caller ] |
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714 vframeStream vfst(thread); |
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715 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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716 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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717 Method* m = vfst.method(); |
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718 assert(m != NULL, "sanity"); |
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719 switch (n) { |
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720 case 0: |
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721 // This must only be called from Reflection.getCallerClass |
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722 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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723 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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724 } |
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725 // fall-through |
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726 case 1: |
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727 // Frame 0 and 1 must be caller sensitive. |
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728 if (!m->caller_sensitive()) { |
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729 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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730 } |
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731 break; |
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732 default: |
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733 if (!m->is_ignored_by_security_stack_walk()) { |
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734 // We have reached the desired frame; return the holder class. |
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735 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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736 } |
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737 break; |
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738 } |
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739 } |
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740 return NULL; |
0 | 741 JVM_END |
742 | |
743 | |
744 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
745 JVMWrapper("JVM_FindPrimitiveClass"); | |
746 oop mirror = NULL; | |
747 BasicType t = name2type(utf); | |
748 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
749 mirror = Universe::java_mirror(t); | |
750 } | |
751 if (mirror == NULL) { | |
752 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
753 } else { | |
754 return (jclass) JNIHandles::make_local(env, mirror); | |
755 } | |
756 JVM_END | |
757 | |
758 | |
759 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
760 JVMWrapper("JVM_ResolveClass"); | |
761 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
762 JVM_END | |
763 | |
878
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764 |
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765 // Returns a class loaded by the bootstrap class loader; or null |
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766 // if not found. ClassNotFoundException is not thrown. |
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767 // |
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768 // Rationale behind JVM_FindClassFromBootLoader |
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769 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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770 // b> because of (a) java.dll has a direct dependecy on the unexported |
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771 // private symbol "_JVM_FindClassFromClassLoader@20". |
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772 // c> the launcher cannot use the private symbol as it dynamically opens |
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773 // the entry point, so if something changes, the launcher will fail |
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774 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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775 // stable exported interface. |
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776 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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777 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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778 // JVM_FindClassFromClassLoader and will not be backward compatible |
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779 // with older JDKs. |
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780 // Thus a public/stable exported entry point is the right solution, |
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781 // public here means public in linker semantics, and is exported only |
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782 // to the JDK, and is not intended to be a public API. |
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783 |
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784 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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785 const char* name)) |
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786 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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787 |
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788 // Java libraries should ensure that name is never null... |
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789 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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790 // It's impossible to create this class; the name cannot fit |
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791 // into the constant pool. |
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792 return NULL; |
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793 } |
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794 |
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795 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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796 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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797 if (k == NULL) { |
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798 return NULL; |
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|
799 } |
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800 |
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801 if (TraceClassResolution) { |
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802 trace_class_resolution(k); |
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803 } |
6983 | 804 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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805 JVM_END |
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806 |
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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 | |
833 | |
834 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
835 jboolean init, jclass from)) | |
836 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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837 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 838 // It's impossible to create this class; the name cannot fit |
839 // into the constant pool. | |
840 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
841 } | |
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842 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 843 oop from_class_oop = JNIHandles::resolve(from); |
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844 Klass* from_class = (from_class_oop == NULL) |
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845 ? (Klass*)NULL |
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846 : java_lang_Class::as_Klass(from_class_oop); |
0 | 847 oop class_loader = NULL; |
848 oop protection_domain = NULL; | |
849 if (from_class != NULL) { | |
6983 | 850 class_loader = from_class->class_loader(); |
851 protection_domain = from_class->protection_domain(); | |
0 | 852 } |
853 Handle h_loader(THREAD, class_loader); | |
854 Handle h_prot (THREAD, protection_domain); | |
855 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
856 h_prot, true, thread); | |
857 | |
858 if (TraceClassResolution && result != NULL) { | |
859 // this function is generally only used for class loading during verification. | |
860 ResourceMark rm; | |
861 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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862 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 863 const char * from_name = from_class->external_name(); |
0 | 864 |
865 oop mirror = JNIHandles::resolve_non_null(result); | |
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866 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 867 const char * to = to_class->external_name(); |
0 | 868 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
869 } | |
870 | |
871 return result; | |
872 JVM_END | |
873 | |
874 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
875 if (loader.is_null()) { | |
876 return; | |
877 } | |
878 | |
879 // check whether the current caller thread holds the lock or not. | |
880 // If not, increment the corresponding counter | |
881 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
882 ObjectSynchronizer::owner_self) { | |
883 counter->inc(); | |
884 } | |
885 } | |
886 | |
887 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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888 // and JVM_DefineClassWithSourceCond() |
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889 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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890 jobject loader, const jbyte *buf, |
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891 jsize len, jobject pd, const char *source, |
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892 jboolean verify, TRAPS) { |
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|
893 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 894 |
875
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895 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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896 JavaThread* jt = (JavaThread*) THREAD; |
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897 |
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898 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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899 ClassLoader::perf_define_appclass_selftime(), |
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900 ClassLoader::perf_define_appclasses(), |
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901 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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902 jt->get_thread_stat()->perf_timers_addr(), |
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903 PerfClassTraceTime::DEFINE_CLASS); |
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904 |
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905 if (UsePerfData) { |
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906 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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907 } |
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908 |
0 | 909 // Since exceptions can be thrown, class initialization can take place |
910 // if name is NULL no check for class name in .class stream has to be made. | |
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911 TempNewSymbol class_name = NULL; |
0 | 912 if (name != NULL) { |
913 const int str_len = (int)strlen(name); | |
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914 if (str_len > Symbol::max_length()) { |
0 | 915 // It's impossible to create this class; the name cannot fit |
916 // into the constant pool. | |
917 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
918 } | |
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919 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 920 } |
921 | |
922 ResourceMark rm(THREAD); | |
923 ClassFileStream st((u1*) buf, len, (char *)source); | |
924 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
925 if (UsePerfData) { | |
926 is_lock_held_by_thread(class_loader, | |
927 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
928 THREAD); | |
929 } | |
930 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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931 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 932 protection_domain, &st, |
973
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933 verify != 0, |
0 | 934 CHECK_NULL); |
935 | |
936 if (TraceClassResolution && k != NULL) { | |
937 trace_class_resolution(k); | |
938 } | |
939 | |
6983 | 940 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 941 } |
942 | |
943 | |
944 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
945 JVMWrapper2("JVM_DefineClass %s", name); | |
946 | |
973
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947 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 948 JVM_END |
949 | |
950 | |
951 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
952 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
953 | |
973
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954 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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955 JVM_END |
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956 |
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957 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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958 jobject loader, const jbyte *buf, |
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959 jsize len, jobject pd, |
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960 const char *source, jboolean verify)) |
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961 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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962 |
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963 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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964 JVM_END |
0 | 965 |
966 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
967 JVMWrapper("JVM_FindLoadedClass"); | |
968 ResourceMark rm(THREAD); | |
969 | |
970 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
971 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
972 | |
973 const char* str = java_lang_String::as_utf8_string(string()); | |
974 // Sanity check, don't expect null | |
975 if (str == NULL) return NULL; | |
976 | |
977 const int str_len = (int)strlen(str); | |
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978 if (str_len > Symbol::max_length()) { |
0 | 979 // It's impossible to create this class; the name cannot fit |
980 // into the constant pool. | |
981 return NULL; | |
982 } | |
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983 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 984 |
985 // Security Note: | |
986 // The Java level wrapper will perform the necessary security check allowing | |
987 // us to pass the NULL as the initiating class loader. | |
988 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
989 if (UsePerfData) { | |
990 is_lock_held_by_thread(h_loader, | |
991 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
992 THREAD); | |
993 } | |
994 | |
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995 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 996 h_loader, |
997 Handle(), | |
998 CHECK_NULL); | |
999 | |
1000 return (k == NULL) ? NULL : | |
6983 | 1001 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 1002 JVM_END |
1003 | |
1004 | |
1005 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
1006 | |
1007 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
1008 assert (cls != NULL, "illegal class"); | |
1009 JVMWrapper("JVM_GetClassName"); | |
1010 JvmtiVMObjectAllocEventCollector oam; | |
1011 ResourceMark rm(THREAD); | |
1012 const char* name; | |
1013 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1014 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
1015 } else { | |
1016 // Consider caching interned string in Klass | |
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1017 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1018 assert(k->is_klass(), "just checking"); |
6983 | 1019 name = k->external_name(); |
0 | 1020 } |
1021 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1022 return (jstring) JNIHandles::make_local(env, result); | |
1023 JVM_END | |
1024 | |
1025 | |
1026 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1027 JVMWrapper("JVM_GetClassInterfaces"); | |
1028 JvmtiVMObjectAllocEventCollector oam; | |
1029 oop mirror = JNIHandles::resolve_non_null(cls); | |
1030 | |
1031 // Special handling for primitive objects | |
1032 if (java_lang_Class::is_primitive(mirror)) { | |
1033 // Primitive objects does not have any interfaces | |
1142 | 1034 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1035 return (jobjectArray) JNIHandles::make_local(env, r); |
1036 } | |
1037 | |
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1038 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1039 // Figure size of result array |
1040 int size; | |
1041 if (klass->oop_is_instance()) { | |
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1042 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1043 } else { |
1044 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1045 size = 2; | |
1046 } | |
1047 | |
1048 // Allocate result array | |
1142 | 1049 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1050 objArrayHandle result (THREAD, r); |
1051 // Fill in result | |
1052 if (klass->oop_is_instance()) { | |
1053 // Regular instance klass, fill in all local interfaces | |
1054 for (int index = 0; index < size; index++) { | |
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1055 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1056 result->obj_at_put(index, k->java_mirror()); |
0 | 1057 } |
1058 } else { | |
1059 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1060 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1061 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1062 } |
1063 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1064 JVM_END | |
1065 | |
1066 | |
1067 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1068 JVMWrapper("JVM_GetClassLoader"); | |
1069 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1070 return NULL; | |
1071 } | |
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1072 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1073 oop loader = k->class_loader(); |
0 | 1074 return JNIHandles::make_local(env, loader); |
1075 JVM_END | |
1076 | |
1077 | |
1078 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1079 JVMWrapper("JVM_IsInterface"); | |
1080 oop mirror = JNIHandles::resolve_non_null(cls); | |
1081 if (java_lang_Class::is_primitive(mirror)) { | |
1082 return JNI_FALSE; | |
1083 } | |
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1084 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1085 jboolean result = k->is_interface(); |
1086 assert(!result || k->oop_is_instance(), | |
0 | 1087 "all interfaces are instance types"); |
1088 // The compiler intrinsic for isInterface tests the | |
1089 // Klass::_access_flags bits in the same way. | |
1090 return result; | |
1091 JVM_END | |
1092 | |
1093 | |
1094 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1095 JVMWrapper("JVM_GetClassSigners"); | |
1096 JvmtiVMObjectAllocEventCollector oam; | |
1097 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1098 // There are no signers for primitive types | |
1099 return NULL; | |
1100 } | |
1101 | |
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1102 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1103 |
1104 // If there are no signers set in the class, or if the class | |
1105 // is an array, return NULL. | |
1106 if (signers == NULL) return NULL; | |
1107 | |
1108 // copy of the signers array | |
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1109 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1110 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1111 for (int index = 0; index < signers->length(); index++) { | |
1112 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1113 } | |
1114 | |
1115 // return the copy | |
1116 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1117 JVM_END | |
1118 | |
1119 | |
1120 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1121 JVMWrapper("JVM_SetClassSigners"); | |
1122 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1123 // This call is ignored for primitive types and arrays. | |
1124 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1125 // be called with an array. Only the bootstrap loader creates arrays. | |
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1126 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1127 if (k->oop_is_instance()) { |
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1128 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1129 } |
1130 } | |
1131 JVM_END | |
1132 | |
1133 | |
1134 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1135 JVMWrapper("JVM_GetProtectionDomain"); | |
1136 if (JNIHandles::resolve(cls) == NULL) { | |
1137 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1138 } | |
1139 | |
1140 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1141 // Primitive types does not have a protection domain. | |
1142 return NULL; | |
1143 } | |
1144 | |
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1145 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1146 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1147 JVM_END |
1148 | |
1149 | |
11010 | 1150 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1151 // If there is a security manager and protection domain, check the access | |
1152 // in the protection domain, otherwise it is authorized. | |
1153 if (java_lang_System::has_security_manager()) { | |
1154 | |
1155 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1156 // this context to revert to older behavior. | |
1157 // In this case the isAuthorized field in AccessControlContext is also not | |
1158 // present. | |
1159 if (Universe::protection_domain_implies_method() == NULL) { | |
1160 return true; | |
1161 } | |
1162 | |
1163 // Whitelist certain access control contexts | |
1164 if (java_security_AccessControlContext::is_authorized(context)) { | |
1165 return true; | |
1166 } | |
1167 | |
1168 oop prot = klass->protection_domain(); | |
1169 if (prot != NULL) { | |
1170 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1171 // in the new wrapper. | |
1172 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1173 Handle h_prot(THREAD, prot); | |
1174 JavaValue result(T_BOOLEAN); | |
1175 JavaCallArguments args(h_prot); | |
1176 JavaCalls::call(&result, m, &args, CHECK_false); | |
1177 return (result.get_jboolean() != 0); | |
1178 } | |
1179 } | |
1180 return true; | |
1181 } | |
1182 | |
1183 // Create an AccessControlContext with a protection domain with null codesource | |
1184 // and null permissions - which gives no permissions. | |
1185 oop create_dummy_access_control_context(TRAPS) { | |
1186 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1187 // new ProtectionDomain(null,null); | |
1188 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1189 Handle null_pd(THREAD, null_protection_domain); | |
1190 | |
1191 // new ProtectionDomain[] {pd}; | |
1192 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1193 context->obj_at_put(0, null_pd()); | |
1194 | |
1195 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1196 objArrayHandle h_context(THREAD, context); | |
1197 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1198 return result; | |
1199 } | |
0 | 1200 |
1201 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1202 JVMWrapper("JVM_DoPrivileged"); | |
1203 | |
1204 if (action == NULL) { | |
1205 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1206 } | |
1207 | |
11010 | 1208 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1209 vframeStream vfst(thread); | |
1210 vfst.security_get_caller_frame(1); | |
1211 | |
1212 if (vfst.at_end()) { | |
1213 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1214 } | |
1215 | |
1216 Method* method = vfst.method(); | |
1217 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1218 | |
1219 // Check that action object understands "Object run()" | |
1220 Handle h_context; | |
1221 if (context != NULL) { | |
1222 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1223 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1224 if (!authorized) { | |
1225 // Create an unprivileged access control object and call it's run function | |
1226 // instead. | |
1227 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1228 h_context = Handle(THREAD, noprivs); | |
1229 } | |
1230 } | |
0 | 1231 |
1232 // Check that action object understands "Object run()" | |
1233 Handle object (THREAD, JNIHandles::resolve(action)); | |
1234 | |
1235 // get run() method | |
6983 | 1236 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1237 vmSymbols::run_method_name(), |
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1238 vmSymbols::void_object_signature(), |
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1239 Klass::normal); |
0 | 1240 methodHandle m (THREAD, m_oop); |
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1241 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1242 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1243 } | |
1244 | |
11010 | 1245 // Stack allocated list of privileged stack elements |
1246 PrivilegedElement pi; | |
0 | 1247 if (!vfst.at_end()) { |
11010 | 1248 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1249 thread->set_privileged_stack_top(&pi); |
1250 } | |
1251 | |
1252 | |
1253 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1254 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1255 Handle pending_exception; | |
1256 JavaValue result(T_OBJECT); | |
1257 JavaCallArguments args(object); | |
1258 JavaCalls::call(&result, m, &args, THREAD); | |
1259 | |
1260 // done with action, remove ourselves from the list | |
1261 if (!vfst.at_end()) { | |
1262 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1263 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1264 } | |
1265 | |
1266 if (HAS_PENDING_EXCEPTION) { | |
1267 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1268 CLEAR_PENDING_EXCEPTION; | |
1269 | |
1142 | 1270 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1271 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1272 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1273 JavaCallArguments args(pending_exception); | |
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1274 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1275 vmSymbols::exception_void_signature(), |
0 | 1276 &args); |
1277 } | |
1278 } | |
1279 | |
1280 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1281 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1282 JVM_END | |
1283 | |
1284 | |
1285 // Returns the inherited_access_control_context field of the running thread. | |
1286 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1287 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1288 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1289 return JNIHandles::make_local(env, result); | |
1290 JVM_END | |
1291 | |
1292 class RegisterArrayForGC { | |
1293 private: | |
1294 JavaThread *_thread; | |
1295 public: | |
1296 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1297 _thread = thread; | |
1298 _thread->register_array_for_gc(array); | |
1299 } | |
1300 | |
1301 ~RegisterArrayForGC() { | |
1302 _thread->register_array_for_gc(NULL); | |
1303 } | |
1304 }; | |
1305 | |
1306 | |
1307 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1308 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1309 if (!UsePrivilegedStack) return NULL; | |
1310 | |
1311 ResourceMark rm(THREAD); | |
1312 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1313 JvmtiVMObjectAllocEventCollector oam; | |
1314 | |
1315 // count the protection domains on the execution stack. We collapse | |
1316 // duplicate consecutive protection domains into a single one, as | |
1317 // well as stopping when we hit a privileged frame. | |
1318 | |
1319 // Use vframeStream to iterate through Java frames | |
1320 vframeStream vfst(thread); | |
1321 | |
1322 oop previous_protection_domain = NULL; | |
1323 Handle privileged_context(thread, NULL); | |
1324 bool is_privileged = false; | |
1325 oop protection_domain = NULL; | |
1326 | |
1327 for(; !vfst.at_end(); vfst.next()) { | |
1328 // get method of frame | |
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1329 Method* method = vfst.method(); |
0 | 1330 intptr_t* frame_id = vfst.frame_id(); |
1331 | |
1332 // check the privileged frames to see if we have a match | |
1333 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1334 // this frame is privileged | |
1335 is_privileged = true; | |
1336 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1337 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1338 } else { | |
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1339 protection_domain = method->method_holder()->protection_domain(); |
0 | 1340 } |
1341 | |
1342 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1343 local_array->push(protection_domain); | |
1344 previous_protection_domain = protection_domain; | |
1345 } | |
1346 | |
1347 if (is_privileged) break; | |
1348 } | |
1349 | |
1350 | |
1351 // either all the domains on the stack were system domains, or | |
1352 // we had a privileged system domain | |
1353 if (local_array->is_empty()) { | |
1354 if (is_privileged && privileged_context.is_null()) return NULL; | |
1355 | |
1356 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1357 return JNIHandles::make_local(env, result); | |
1358 } | |
1359 | |
1360 // the resource area must be registered in case of a gc | |
1361 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1362 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1363 local_array->length(), CHECK_NULL); |
1364 objArrayHandle h_context(thread, context); | |
1365 for (int index = 0; index < local_array->length(); index++) { | |
1366 h_context->obj_at_put(index, local_array->at(index)); | |
1367 } | |
1368 | |
1369 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1370 | |
1371 return JNIHandles::make_local(env, result); | |
1372 JVM_END | |
1373 | |
1374 | |
1375 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1376 JVMWrapper("JVM_IsArrayClass"); | |
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1377 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1378 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1379 JVM_END |
1380 | |
1381 | |
1382 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1383 JVMWrapper("JVM_IsPrimitiveClass"); | |
1384 oop mirror = JNIHandles::resolve_non_null(cls); | |
1385 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1386 JVM_END | |
1387 | |
1388 | |
1389 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1390 JVMWrapper("JVM_GetComponentType"); | |
1391 oop mirror = JNIHandles::resolve_non_null(cls); | |
1392 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1393 return (jclass) JNIHandles::make_local(env, result); | |
1394 JVM_END | |
1395 | |
1396 | |
1397 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1398 JVMWrapper("JVM_GetClassModifiers"); | |
1399 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1400 // Primitive type | |
1401 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1402 } | |
1403 | |
6983 | 1404 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1405 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1406 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1407 return k->modifier_flags(); | |
1408 JVM_END | |
1409 | |
1410 | |
1411 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1412 | |
1413 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1414 JvmtiVMObjectAllocEventCollector oam; | |
1415 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1416 // of an InstanceKlass |
0 | 1417 |
1418 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1419 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1420 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1421 return (jobjectArray)JNIHandles::make_local(env, result); |
1422 } | |
1423 | |
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1424 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1425 InnerClassesIterator iter(k); |
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1426 |
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1427 if (iter.length() == 0) { |
0 | 1428 // Neither an inner nor outer class |
1142 | 1429 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1430 return (jobjectArray)JNIHandles::make_local(env, result); |
1431 } | |
1432 | |
1433 // find inner class info | |
1434 constantPoolHandle cp(thread, k->constants()); | |
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1435 int length = iter.length(); |
0 | 1436 |
1437 // Allocate temp. result array | |
1142 | 1438 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1439 objArrayHandle result (THREAD, r); |
1440 int members = 0; | |
1441 | |
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1442 for (; !iter.done(); iter.next()) { |
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1443 int ioff = iter.inner_class_info_index(); |
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1444 int ooff = iter.outer_class_info_index(); |
0 | 1445 |
1446 if (ioff != 0 && ooff != 0) { | |
1447 // Check to see if the name matches the class we're looking for | |
1448 // before attempting to find the class. | |
1449 if (cp->klass_name_at_matches(k, ooff)) { | |
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1450 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1451 if (outer_klass == k()) { |
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1452 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1453 instanceKlassHandle inner_klass (THREAD, ik); |
1454 | |
1455 // Throws an exception if outer klass has not declared k as | |
1456 // an inner klass | |
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1457 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1458 |
1459 result->obj_at_put(members, inner_klass->java_mirror()); | |
1460 members++; | |
1461 } | |
1462 } | |
1463 } | |
1464 } | |
1465 | |
1466 if (members != length) { | |
1467 // Return array of right length | |
1142 | 1468 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1469 for(int i = 0; i < members; i++) { |
1470 res->obj_at_put(i, result->obj_at(i)); | |
1471 } | |
1472 return (jobjectArray)JNIHandles::make_local(env, res); | |
1473 } | |
1474 | |
1475 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1476 JVM_END | |
1477 | |
1478 | |
1479 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1480 { |
0 | 1481 // ofClass is a reference to a java_lang_Class object. |
1482 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1483 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1484 return NULL; |
1485 } | |
1486 | |
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1487 bool inner_is_member = false; |
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1488 Klass* outer_klass |
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1489 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1490 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1491 if (outer_klass == NULL) return NULL; // already a top-level class |
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1492 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1493 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1494 } |
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1495 JVM_END |
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1496 |
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1497 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1498 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1499 bool* inner_is_member, |
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1500 TRAPS) { |
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1501 Thread* thread = THREAD; |
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1502 InnerClassesIterator iter(k); |
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1503 if (iter.length() == 0) { |
0 | 1504 // No inner class info => no declaring class |
1505 return NULL; | |
1506 } | |
1507 | |
1508 constantPoolHandle i_cp(thread, k->constants()); | |
1509 | |
1510 bool found = false; | |
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1511 Klass* ok; |
0 | 1512 instanceKlassHandle outer_klass; |
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1513 *inner_is_member = false; |
0 | 1514 |
1515 // Find inner_klass attribute | |
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1516 for (; !iter.done() && !found; iter.next()) { |
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1517 int ioff = iter.inner_class_info_index(); |
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1518 int ooff = iter.outer_class_info_index(); |
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1519 int noff = iter.inner_name_index(); |
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1520 if (ioff != 0) { |
0 | 1521 // Check to see if the name matches the class we're looking for |
1522 // before attempting to find the class. | |
1523 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1524 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1525 found = (k() == inner_klass); |
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1526 if (found && ooff != 0) { |
0 | 1527 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1528 outer_klass = instanceKlassHandle(thread, ok); | |
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1529 *inner_is_member = true; |
0 | 1530 } |
1531 } | |
1532 } | |
1533 } | |
1534 | |
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1535 if (found && outer_klass.is_null()) { |
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1536 // It may be anonymous; try for that. |
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1537 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1538 if (encl_method_class_idx != 0) { |
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1539 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1540 outer_klass = instanceKlassHandle(thread, ok); |
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1541 *inner_is_member = false; |
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1542 } |
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1543 } |
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1544 |
0 | 1545 // If no inner class attribute found for this class. |
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1546 if (outer_klass.is_null()) return NULL; |
0 | 1547 |
1548 // Throws an exception if outer klass has not declared k as an inner klass | |
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1549 // We need evidence that each klass knows about the other, or else |
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1550 // the system could allow a spoof of an inner class to gain access rights. |
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1551 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1552 return outer_klass(); |
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1553 } |
0 | 1554 |
1555 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1556 assert (cls != NULL, "illegal class"); | |
1557 JVMWrapper("JVM_GetClassSignature"); | |
1558 JvmtiVMObjectAllocEventCollector oam; | |
1559 ResourceMark rm(THREAD); | |
1560 // Return null for arrays and primatives | |
1561 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1562 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1563 if (k->oop_is_instance()) { |
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1564 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1565 if (sym == NULL) return NULL; |
0 | 1566 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1567 return (jstring) JNIHandles::make_local(env, str()); | |
1568 } | |
1569 } | |
1570 return NULL; | |
1571 JVM_END | |
1572 | |
1573 | |
1574 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1575 assert (cls != NULL, "illegal class"); | |
1576 JVMWrapper("JVM_GetClassAnnotations"); | |
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1577 |
0 | 1578 // Return null for arrays and primitives |
1579 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1580 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1581 if (k->oop_is_instance()) { |
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1582 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1583 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1584 } |
1585 } | |
1586 return NULL; | |
1587 JVM_END | |
1588 | |
1589 | |
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1590 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1591 // some of this code was adapted from from jni_FromReflectedField |
1592 | |
1593 oop reflected = JNIHandles::resolve_non_null(field); | |
1594 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1595 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1596 int slot = java_lang_reflect_Field::slot(reflected); |
1597 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1598 | |
1599 KlassHandle kh(THREAD, k); | |
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1600 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1601 |
1602 if (modifiers & JVM_ACC_STATIC) { | |
1603 // for static fields we only look in the current class | |
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1604 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1605 assert(false, "cannot find static field"); |
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1606 return false; |
0 | 1607 } |
1608 } else { | |
1609 // for instance fields we start with the current class and work | |
1610 // our way up through the superclass chain | |
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1611 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1612 assert(false, "cannot find instance field"); |
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1613 return false; |
0 | 1614 } |
1615 } | |
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1616 return true; |
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1617 } |
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1618 |
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1619 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1620 // field is a handle to a java.lang.reflect.Field object |
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1621 assert(field != NULL, "illegal field"); |
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1622 JVMWrapper("JVM_GetFieldAnnotations"); |
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1623 |
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1624 fieldDescriptor fd; |
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1625 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1626 if (!gotFd) { |
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|
1627 return NULL; |
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|
1628 } |
0 | 1629 |
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1630 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1631 JVM_END |
1632 | |
1633 | |
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1634 static Method* jvm_get_method_common(jobject method) { |
0 | 1635 // some of this code was adapted from from jni_FromReflectedMethod |
1636 | |
1637 oop reflected = JNIHandles::resolve_non_null(method); | |
1638 oop mirror = NULL; | |
1639 int slot = 0; | |
1640 | |
1142 | 1641 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1642 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1643 slot = java_lang_reflect_Constructor::slot(reflected); | |
1644 } else { | |
1142 | 1645 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1646 "wrong type"); |
1647 mirror = java_lang_reflect_Method::clazz(reflected); | |
1648 slot = java_lang_reflect_Method::slot(reflected); | |
1649 } | |
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1650 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1651 |
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1652 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1653 assert(m != NULL, "cannot find method"); |
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1654 return m; // caller has to deal with NULL in product mode |
0 | 1655 } |
1656 | |
1657 | |
1658 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1659 JVMWrapper("JVM_GetMethodAnnotations"); | |
1660 | |
1661 // method is a handle to a java.lang.reflect.Method object | |
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1662 Method* m = jvm_get_method_common(method); |
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1663 if (m == NULL) { |
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|
1664 return NULL; |
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|
1665 } |
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|
1666 |
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1667 return (jbyteArray) JNIHandles::make_local(env, |
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1668 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1669 JVM_END |
1670 | |
1671 | |
1672 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1673 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1674 | |
1675 // method is a handle to a java.lang.reflect.Method object | |
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1676 Method* m = jvm_get_method_common(method); |
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1677 if (m == NULL) { |
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|
1678 return NULL; |
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|
1679 } |
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1680 |
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1681 return (jbyteArray) JNIHandles::make_local(env, |
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1682 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1683 JVM_END |
1684 | |
1685 | |
1686 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1687 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1688 | |
1689 // method is a handle to a java.lang.reflect.Method object | |
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1690 Method* m = jvm_get_method_common(method); |
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1691 if (m == NULL) { |
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|
1692 return NULL; |
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|
1693 } |
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|
1694 |
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1695 return (jbyteArray) JNIHandles::make_local(env, |
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1696 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1697 JVM_END |
1698 | |
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1699 /* Type use annotations support (JDK 1.8) */ |
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1700 |
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1701 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1702 assert (cls != NULL, "illegal class"); |
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1703 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1704 ResourceMark rm(THREAD); |
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|
1705 // Return null for arrays and primitives |
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1706 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1707 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1708 if (k->oop_is_instance()) { |
8031 | 1709 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1710 if (type_annotations != NULL) { |
8031 | 1711 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1712 return (jbyteArray) JNIHandles::make_local(env, a); |
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1713 } |
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1714 } |
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1715 } |
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1716 return NULL; |
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1717 JVM_END |
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1718 |
8818
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1719 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1720 assert (method != NULL, "illegal method"); |
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1721 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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1722 |
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1723 // method is a handle to a java.lang.reflect.Method object |
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1724 Method* m = jvm_get_method_common(method); |
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1725 if (m == NULL) { |
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|
1726 return NULL; |
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|
1727 } |
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|
1728 |
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1729 AnnotationArray* type_annotations = m->type_annotations(); |
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1730 if (type_annotations != NULL) { |
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1731 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1732 return (jbyteArray) JNIHandles::make_local(env, a); |
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1733 } |
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|
1734 |
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1735 return NULL; |
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|
1736 JVM_END |
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1737 |
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1738 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1739 assert (field != NULL, "illegal field"); |
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|
1740 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1741 |
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|
1742 fieldDescriptor fd; |
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|
1743 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1744 if (!gotFd) { |
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|
1745 return NULL; |
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|
1746 } |
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|
1747 |
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|
1748 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1749 JVM_END |
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|
1750 |
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1751 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1752 if (!cp->is_within_bounds(index)) { |
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|
1753 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1754 } |
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1755 } |
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1756 |
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1757 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1758 { |
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1759 JVMWrapper("JVM_GetMethodParameters"); |
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1760 // method is a handle to a java.lang.reflect.Method object |
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1761 Method* method_ptr = jvm_get_method_common(method); |
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1762 methodHandle mh (THREAD, method_ptr); |
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1763 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1764 const int num_params = mh->method_parameters_length(); |
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1765 |
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1766 if (0 != num_params) { |
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1767 // make sure all the symbols are properly formatted |
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1768 for (int i = 0; i < num_params; i++) { |
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1769 MethodParametersElement* params = mh->method_parameters_start(); |
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1770 int index = params[i].name_cp_index; |
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1771 bounds_check(mh->constants(), index, CHECK_NULL); |
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1772 |
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1773 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1774 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1775 "Wrong type at constant pool index"); |
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1776 } |
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1777 |
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1778 } |
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1779 |
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1780 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1781 objArrayHandle result (THREAD, result_oop); |
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1782 |
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1783 for (int i = 0; i < num_params; i++) { |
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1784 MethodParametersElement* params = mh->method_parameters_start(); |
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1785 // For a 0 index, give a NULL symbol |
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1786 Symbol* sym = 0 != params[i].name_cp_index ? |
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1787 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1788 int flags = params[i].flags; |
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1789 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1790 flags, CHECK_NULL); |
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1791 result->obj_at_put(i, param); |
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1792 } |
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1793 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1794 } else { |
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1795 return (jobjectArray)NULL; |
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1796 } |
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1797 } |
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1798 JVM_END |
0 | 1799 |
1800 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1801 | |
1802 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1803 { | |
1804 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1805 JvmtiVMObjectAllocEventCollector oam; | |
1806 | |
1807 // Exclude primitive types and array types | |
1808 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1809 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1810 // Return empty array |
1142 | 1811 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1812 return (jobjectArray) JNIHandles::make_local(env, res); |
1813 } | |
1814 | |
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1815 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1816 constantPoolHandle cp(THREAD, k->constants()); |
1817 | |
1818 // Ensure class is linked | |
1819 k->link_class(CHECK_NULL); | |
1820 | |
1821 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1822 bool skip_backtrace = false; | |
1823 | |
1824 // Allocate result | |
1825 int num_fields; | |
1826 | |
1827 if (publicOnly) { | |
1828 num_fields = 0; | |
3938 | 1829 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1830 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1831 } |
1832 } else { | |
3938 | 1833 num_fields = k->java_fields_count(); |
0 | 1834 |
1142 | 1835 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1836 num_fields--; |
1837 skip_backtrace = true; | |
1838 } | |
1839 } | |
1840 | |
1142 | 1841 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1842 objArrayHandle result (THREAD, r); |
1843 | |
1844 int out_idx = 0; | |
1845 fieldDescriptor fd; | |
3938 | 1846 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1847 if (skip_backtrace) { |
1848 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1849 int offset = fs.offset(); |
0 | 1850 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1851 } | |
1852 | |
3938 | 1853 if (!publicOnly || fs.access_flags().is_public()) { |
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1854 fd.reinitialize(k(), fs.index()); |
0 | 1855 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1856 result->obj_at_put(out_idx, field); | |
1857 ++out_idx; | |
1858 } | |
1859 } | |
1860 assert(out_idx == num_fields, "just checking"); | |
1861 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1862 } | |
1863 JVM_END | |
1864 | |
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1865 static bool select_method(methodHandle method, bool want_constructor) { |
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1866 if (want_constructor) { |
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1867 return (method->is_initializer() && !method->is_static()); |
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1868 } else { |
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1869 return (!method->is_initializer() && !method->is_overpass()); |
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1870 } |
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1871 } |
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1872 |
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1873 static jobjectArray get_class_declared_methods_helper( |
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1874 JNIEnv *env, |
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1875 jclass ofClass, jboolean publicOnly, |
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1876 bool want_constructor, |
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1877 Klass* klass, TRAPS) { |
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1878 |
0 | 1879 JvmtiVMObjectAllocEventCollector oam; |
1880 | |
1881 // Exclude primitive types and array types | |
1882 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1883 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1884 // Return empty array |
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1885 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1886 return (jobjectArray) JNIHandles::make_local(env, res); |
1887 } | |
1888 | |
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1889 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1890 |
1891 // Ensure class is linked | |
1892 k->link_class(CHECK_NULL); | |
1893 | |
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1894 Array<Method*>* methods = k->methods(); |
0 | 1895 int methods_length = methods->length(); |
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1896 |
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1897 // Save original method_idnum in case of redefinition, which can change |
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1898 // the idnum of obsolete methods. The new method will have the same idnum |
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1899 // but if we refresh the methods array, the counts will be wrong. |
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1900 ResourceMark rm(THREAD); |
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1901 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1902 int num_methods = 0; |
1903 | |
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1904 for (int i = 0; i < methods_length; i++) { |
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1905 methodHandle method(THREAD, methods->at(i)); |
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1906 if (select_method(method, want_constructor)) { |
0 | 1907 if (!publicOnly || method->is_public()) { |
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1908 idnums->push(method->method_idnum()); |
0 | 1909 ++num_methods; |
1910 } | |
1911 } | |
1912 } | |
1913 | |
1914 // Allocate result | |
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1915 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1916 objArrayHandle result (THREAD, r); |
1917 | |
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1918 // Now just put the methods that we selected above, but go by their idnum |
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1919 // in case of redefinition. The methods can be redefined at any safepoint, |
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1920 // so above when allocating the oop array and below when creating reflect |
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1921 // objects. |
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1922 for (int i = 0; i < num_methods; i++) { |
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1923 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1924 if (method.is_null()) { |
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1925 // Method may have been deleted and seems this API can handle null |
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1926 // Otherwise should probably put a method that throws NSME |
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1927 result->obj_at_put(i, NULL); |
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1928 } else { |
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1929 oop m; |
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1930 if (want_constructor) { |
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1931 m = Reflection::new_constructor(method, CHECK_NULL); |
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1932 } else { |
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1933 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1934 } |
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1935 result->obj_at_put(i, m); |
0 | 1936 } |
1937 } | |
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1938 |
0 | 1939 return (jobjectArray) JNIHandles::make_local(env, result()); |
1940 } | |
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1941 |
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1942 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1943 { |
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1944 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1945 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1946 /*want_constructor*/ false, |
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1947 SystemDictionary::reflect_Method_klass(), THREAD); |
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1948 } |
0 | 1949 JVM_END |
1950 | |
1951 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1952 { | |
1953 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1954 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1955 /*want_constructor*/ true, |
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1956 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1957 } |
1958 JVM_END | |
1959 | |
1960 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1961 { | |
1962 JVMWrapper("JVM_GetClassAccessFlags"); | |
1963 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1964 // Primitive type | |
1965 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1966 } | |
1967 | |
6983 | 1968 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1969 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1970 } | |
1971 JVM_END | |
1972 | |
1973 | |
1974 // Constant pool access ////////////////////////////////////////////////////////// | |
1975 | |
1976 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1977 { | |
1978 JVMWrapper("JVM_GetClassConstantPool"); | |
1979 JvmtiVMObjectAllocEventCollector oam; | |
1980 | |
1981 // Return null for primitives and arrays | |
1982 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1983 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1984 if (k->oop_is_instance()) { |
0 | 1985 instanceKlassHandle k_h(THREAD, k); |
1986 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1987 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1988 return JNIHandles::make_local(jcp()); |
1989 } | |
1990 } | |
1991 return NULL; | |
1992 } | |
1993 JVM_END | |
1994 | |
1995 | |
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1996 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1997 { |
1998 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1999 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2000 return cp->length(); |
2001 } | |
2002 JVM_END | |
2003 | |
2004 | |
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2005 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2006 { |
2007 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2008 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2009 bounds_check(cp, index, CHECK_NULL); |
2010 constantTag tag = cp->tag_at(index); | |
2011 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2012 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2013 } | |
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2014 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2015 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2016 } |
2017 JVM_END | |
2018 | |
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2019 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2020 { |
2021 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2022 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2023 bounds_check(cp, index, CHECK_NULL); |
2024 constantTag tag = cp->tag_at(index); | |
2025 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2026 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2027 } | |
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2028 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2029 if (k == NULL) return NULL; |
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2030 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2031 } |
2032 JVM_END | |
2033 | |
2034 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2035 constantTag tag = cp->tag_at(index); | |
2036 if (!tag.is_method() && !tag.is_interface_method()) { | |
2037 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2038 } | |
2039 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2040 Klass* k_o; |
0 | 2041 if (force_resolution) { |
2042 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2043 } else { | |
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2044 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2045 if (k_o == NULL) return NULL; |
2046 } | |
2047 instanceKlassHandle k(THREAD, k_o); | |
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2048 Symbol* name = cp->uncached_name_ref_at(index); |
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2049 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2050 methodHandle m (THREAD, k->find_method(name, sig)); |
2051 if (m.is_null()) { | |
2052 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2053 } | |
2054 oop method; | |
2055 if (!m->is_initializer() || m->is_static()) { | |
2056 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2057 } else { | |
2058 method = Reflection::new_constructor(m, CHECK_NULL); | |
2059 } | |
2060 return JNIHandles::make_local(method); | |
2061 } | |
2062 | |
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2063 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2064 { |
2065 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2066 JvmtiVMObjectAllocEventCollector oam; | |
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2067 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2068 bounds_check(cp, index, CHECK_NULL); |
2069 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2070 return res; | |
2071 } | |
2072 JVM_END | |
2073 | |
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2074 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2075 { |
2076 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2077 JvmtiVMObjectAllocEventCollector oam; | |
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2078 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2079 bounds_check(cp, index, CHECK_NULL); |
2080 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2081 return res; | |
2082 } | |
2083 JVM_END | |
2084 | |
2085 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2086 constantTag tag = cp->tag_at(index); | |
2087 if (!tag.is_field()) { | |
2088 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2089 } | |
2090 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2091 Klass* k_o; |
0 | 2092 if (force_resolution) { |
2093 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2094 } else { | |
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2095 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2096 if (k_o == NULL) return NULL; |
2097 } | |
2098 instanceKlassHandle k(THREAD, k_o); | |
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2099 Symbol* name = cp->uncached_name_ref_at(index); |
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2100 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2101 fieldDescriptor fd; |
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2102 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2103 if (target_klass == NULL) { |
2104 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2105 } | |
2106 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2107 return JNIHandles::make_local(field); | |
2108 } | |
2109 | |
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2110 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2111 { |
2112 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
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_field_at_helper(cp, index, true, CHECK_NULL); | |
2117 return res; | |
2118 } | |
2119 JVM_END | |
2120 | |
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2121 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2122 { |
2123 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2124 JvmtiVMObjectAllocEventCollector oam; | |
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2125 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2126 bounds_check(cp, index, CHECK_NULL); |
2127 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2128 return res; | |
2129 } | |
2130 JVM_END | |
2131 | |
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2132 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2133 { |
2134 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2135 JvmtiVMObjectAllocEventCollector oam; | |
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2136 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2137 bounds_check(cp, index, CHECK_NULL); |
2138 constantTag tag = cp->tag_at(index); | |
2139 if (!tag.is_field_or_method()) { | |
2140 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2141 } | |
2142 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2143 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2144 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2145 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2146 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2147 objArrayHandle dest(THREAD, dest_o); |
2148 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2149 dest->obj_at_put(0, str()); | |
2150 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2151 dest->obj_at_put(1, str()); | |
2152 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2153 dest->obj_at_put(2, str()); | |
2154 return (jobjectArray) JNIHandles::make_local(dest()); | |
2155 } | |
2156 JVM_END | |
2157 | |
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2158 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2159 { |
2160 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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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_0); |
2163 constantTag tag = cp->tag_at(index); | |
2164 if (!tag.is_int()) { | |
2165 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2166 } | |
2167 return cp->int_at(index); | |
2168 } | |
2169 JVM_END | |
2170 | |
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2171 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2172 { |
2173 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2174 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2175 bounds_check(cp, index, CHECK_(0L)); |
2176 constantTag tag = cp->tag_at(index); | |
2177 if (!tag.is_long()) { | |
2178 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2179 } | |
2180 return cp->long_at(index); | |
2181 } | |
2182 JVM_END | |
2183 | |
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2184 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2185 { |
2186 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2187 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2188 bounds_check(cp, index, CHECK_(0.0f)); |
2189 constantTag tag = cp->tag_at(index); | |
2190 if (!tag.is_float()) { | |
2191 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2192 } | |
2193 return cp->float_at(index); | |
2194 } | |
2195 JVM_END | |
2196 | |
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2197 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2198 { |
2199 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2200 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2201 bounds_check(cp, index, CHECK_(0.0)); |
2202 constantTag tag = cp->tag_at(index); | |
2203 if (!tag.is_double()) { | |
2204 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2205 } | |
2206 return cp->double_at(index); | |
2207 } | |
2208 JVM_END | |
2209 | |
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2210 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2211 { |
2212 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2213 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2214 bounds_check(cp, index, CHECK_NULL); |
2215 constantTag tag = cp->tag_at(index); | |
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2216 if (!tag.is_string()) { |
0 | 2217 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2218 } | |
2219 oop str = cp->string_at(index, CHECK_NULL); | |
2220 return (jstring) JNIHandles::make_local(str); | |
2221 } | |
2222 JVM_END | |
2223 | |
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2224 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2225 { |
2226 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2227 JvmtiVMObjectAllocEventCollector oam; | |
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2228 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2229 bounds_check(cp, index, CHECK_NULL); |
2230 constantTag tag = cp->tag_at(index); | |
2231 if (!tag.is_symbol()) { | |
2232 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2233 } | |
2177
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2234 Symbol* sym = cp->symbol_at(index); |
0 | 2235 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2236 return (jstring) JNIHandles::make_local(str()); | |
2237 } | |
2238 JVM_END | |
2239 | |
2240 | |
2241 // Assertion support. ////////////////////////////////////////////////////////// | |
2242 | |
2243 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2244 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2245 assert(cls != NULL, "bad class"); | |
2246 | |
2247 oop r = JNIHandles::resolve(cls); | |
2248 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2249 if (java_lang_Class::is_primitive(r)) return false; | |
2250 | |
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2251 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2252 assert(k->oop_is_instance(), "must be an instance klass"); |
2253 if (! k->oop_is_instance()) return false; | |
0 | 2254 |
2255 ResourceMark rm(THREAD); | |
6983 | 2256 const char* name = k->name()->as_C_string(); |
2257 bool system_class = k->class_loader() == NULL; | |
0 | 2258 return JavaAssertions::enabled(name, system_class); |
2259 | |
2260 JVM_END | |
2261 | |
2262 | |
2263 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2264 // command-line assertion arguments (i.e., -ea, -da). | |
2265 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2266 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2267 JvmtiVMObjectAllocEventCollector oam; | |
2268 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2269 return JNIHandles::make_local(env, asd); | |
2270 JVM_END | |
2271 | |
2272 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2273 | |
2274 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2275 | |
2276 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2277 // All functions from this section should call the jvmtiThreadSate function: | |
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2278 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2279 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2280 // was invoked in the middle of the class redefinition. |
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2281 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2282 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2283 | |
2284 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2285 JVMWrapper("JVM_GetClassNameUTF"); | |
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2286 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2287 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2288 return k->name()->as_utf8(); |
0 | 2289 JVM_END |
2290 | |
2291 | |
2292 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2293 JVMWrapper("JVM_GetClassCPTypes"); | |
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2294 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2295 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2296 // types will have length zero if this is not an InstanceKlass |
0 | 2297 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2298 if (k->oop_is_instance()) { |
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2299 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2300 for (int index = cp->length() - 1; index >= 0; index--) { |
2301 constantTag tag = cp->tag_at(index); | |
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2302 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2303 } |
2304 } | |
2305 JVM_END | |
2306 | |
2307 | |
2308 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2309 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2310 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2311 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2312 if (!k->oop_is_instance()) |
0 | 2313 return 0; |
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2314 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2315 JVM_END |
2316 | |
2317 | |
2318 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2319 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2320 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2321 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2322 if (!k->oop_is_instance()) |
0 | 2323 return 0; |
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2324 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2325 JVM_END |
2326 | |
2327 | |
2328 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2329 JVMWrapper("JVM_GetClassMethodsCount"); | |
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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); |
6983 | 2332 if (!k->oop_is_instance()) |
0 | 2333 return 0; |
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2334 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2335 JVM_END |
2336 | |
2337 | |
2338 // The following methods, used for the verifier, are never called with | |
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2339 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2340 // Typically, these methods are called in a loop with bounds determined |
2341 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2342 // zero for arrays. | |
2343 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2344 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2345 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2346 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2347 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2348 int length = method->checked_exceptions_length(); |
0 | 2349 if (length > 0) { |
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2350 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2351 for (int i = 0; i < length; i++) { |
2352 exceptions[i] = table[i].class_cp_index; | |
2353 } | |
2354 } | |
2355 JVM_END | |
2356 | |
2357 | |
2358 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2359 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2360 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2362 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2363 return method->checked_exceptions_length(); |
0 | 2364 JVM_END |
2365 | |
2366 | |
2367 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2368 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2369 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2370 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2371 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2372 memcpy(code, method->code_base(), method->code_size()); |
0 | 2373 JVM_END |
2374 | |
2375 | |
2376 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2377 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2378 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2379 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2380 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2381 return method->code_size(); |
0 | 2382 JVM_END |
2383 | |
2384 | |
2385 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2386 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2387 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2388 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2389 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2390 ExceptionTable extable(method); |
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2391 entry->start_pc = extable.start_pc(entry_index); |
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2392 entry->end_pc = extable.end_pc(entry_index); |
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2393 entry->handler_pc = extable.handler_pc(entry_index); |
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2394 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2395 JVM_END |
2396 | |
2397 | |
2398 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2399 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2400 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2401 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2402 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2403 return method->exception_table_length(); |
0 | 2404 JVM_END |
2405 | |
2406 | |
2407 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2408 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2409 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2410 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2411 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2412 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2413 JVM_END |
2414 | |
2415 | |
2416 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2417 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2418 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2419 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2420 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2421 JVM_END |
2422 | |
2423 | |
2424 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2425 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2426 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2427 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2428 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2429 return method->max_locals(); |
0 | 2430 JVM_END |
2431 | |
2432 | |
2433 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2434 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2435 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2436 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2437 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2438 return method->size_of_parameters(); |
0 | 2439 JVM_END |
2440 | |
2441 | |
2442 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2443 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2444 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2445 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2446 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2447 return method->verifier_max_stack(); |
0 | 2448 JVM_END |
2449 | |
2450 | |
2451 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2452 JVMWrapper("JVM_IsConstructorIx"); | |
2453 ResourceMark rm(THREAD); | |
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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 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2457 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2458 JVM_END |
2459 | |
2460 | |
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2461 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2462 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2463 ResourceMark rm(THREAD); |
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2464 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2465 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2466 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2467 return method->is_overpass(); |
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|
2468 JVM_END |
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|
2469 |
0 | 2470 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2471 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2472 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2473 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2474 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2475 return method->name()->as_utf8(); |
0 | 2476 JVM_END |
2477 | |
2478 | |
2479 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2480 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2481 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2482 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2483 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2484 return method->signature()->as_utf8(); |
0 | 2485 JVM_END |
2486 | |
2487 /** | |
2488 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2489 * read entries in the constant pool. Since the old verifier always | |
2490 * works on a copy of the code, it will not see any rewriting that | |
2491 * may possibly occur in the middle of verification. So it is important | |
2492 * that nothing it calls tries to use the cpCache instead of the raw | |
2493 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2494 */ | |
2495 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2496 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2497 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2498 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2499 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2500 switch (cp->tag_at(cp_index).value()) { |
2501 case JVM_CONSTANT_Fieldref: | |
2502 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2503 default: | |
2504 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2505 } | |
2506 ShouldNotReachHere(); | |
2507 return NULL; | |
2508 JVM_END | |
2509 | |
2510 | |
2511 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2512 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2513 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2514 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2515 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2516 switch (cp->tag_at(cp_index).value()) { |
2517 case JVM_CONSTANT_InterfaceMethodref: | |
2518 case JVM_CONSTANT_Methodref: | |
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|
2519 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2520 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2521 default: | |
2522 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2523 } | |
2524 ShouldNotReachHere(); | |
2525 return NULL; | |
2526 JVM_END | |
2527 | |
2528 | |
2529 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2530 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2531 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2532 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2533 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2534 switch (cp->tag_at(cp_index).value()) { |
2535 case JVM_CONSTANT_InterfaceMethodref: | |
2536 case JVM_CONSTANT_Methodref: | |
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|
2537 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2538 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2539 default: | |
2540 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2541 } | |
2542 ShouldNotReachHere(); | |
2543 return NULL; | |
2544 JVM_END | |
2545 | |
2546 | |
2547 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2548 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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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_Fieldref: | |
2554 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2555 default: | |
2556 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2557 } | |
2558 ShouldNotReachHere(); | |
2559 return NULL; | |
2560 JVM_END | |
2561 | |
2562 | |
2563 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2564 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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|
2565 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2566 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2567 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2568 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2569 return classname->as_utf8(); |
2570 JVM_END | |
2571 | |
2572 | |
2573 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2574 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2575 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2576 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2577 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2578 switch (cp->tag_at(cp_index).value()) { |
2579 case JVM_CONSTANT_Fieldref: { | |
2580 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
2177
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|
2581 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2582 return classname->as_utf8(); |
2583 } | |
2584 default: | |
2585 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2586 } | |
2587 ShouldNotReachHere(); | |
2588 return NULL; | |
2589 JVM_END | |
2590 | |
2591 | |
2592 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2593 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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|
2594 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2595 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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|
2596 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2597 switch (cp->tag_at(cp_index).value()) { |
2598 case JVM_CONSTANT_Methodref: | |
2599 case JVM_CONSTANT_InterfaceMethodref: { | |
2600 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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diff
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|
2601 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2602 return classname->as_utf8(); |
2603 } | |
2604 default: | |
2605 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2606 } | |
2607 ShouldNotReachHere(); | |
2608 return NULL; | |
2609 JVM_END | |
2610 | |
2611 | |
3938 | 2612 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2613 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2614 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2615 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2616 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2617 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2618 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2619 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2620 switch (cp->tag_at(cp_index).value()) { |
2621 case JVM_CONSTANT_Fieldref: { | |
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|
2622 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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diff
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|
2623 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2624 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2625 if (fs.name() == name && fs.signature() == signature) { | |
2626 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2627 } |
2628 } | |
2629 return -1; | |
2630 } | |
2631 default: | |
2632 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2633 } | |
2634 ShouldNotReachHere(); | |
2635 return 0; | |
2636 JVM_END | |
2637 | |
2638 | |
2639 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2640 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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|
2641 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2642 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2643 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2644 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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|
2645 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2646 switch (cp->tag_at(cp_index).value()) { |
2647 case JVM_CONSTANT_Methodref: | |
2648 case JVM_CONSTANT_InterfaceMethodref: { | |
2177
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|
2649 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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|
2650 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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|
2651 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2652 int methods_count = methods->length(); |
2653 for (int i = 0; i < methods_count; i++) { | |
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|
2654 Method* method = methods->at(i); |
0 | 2655 if (method->name() == name && method->signature() == signature) { |
2656 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2657 } | |
2658 } | |
2659 return -1; | |
2660 } | |
2661 default: | |
2662 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2663 } | |
2664 ShouldNotReachHere(); | |
2665 return 0; | |
2666 JVM_END | |
2667 | |
2668 | |
2669 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2670 | |
2671 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2672 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2673 JVM_END | |
2674 | |
2675 | |
2676 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2677 JVMWrapper("JVM_IsSameClassPackage"); | |
2678 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2679 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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|
2680 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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|
2681 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2682 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2683 JVM_END | |
2684 | |
2685 | |
2686 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2687 | |
2688 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2689 JVMWrapper2("JVM_Open (%s)", fname); | |
2690 | |
2691 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2692 int result = os::open(fname, flags, mode); |
0 | 2693 if (result >= 0) { |
2694 return result; | |
2695 } else { | |
2696 switch(errno) { | |
2697 case EEXIST: | |
2698 return JVM_EEXIST; | |
2699 default: | |
2700 return -1; | |
2701 } | |
2702 } | |
2703 JVM_END | |
2704 | |
2705 | |
2706 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2707 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2708 //%note jvm_r6 | |
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diff
changeset
|
2709 return os::close(fd); |
0 | 2710 JVM_END |
2711 | |
2712 | |
2713 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2714 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2715 | |
2716 //%note jvm_r6 | |
1980
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changeset
|
2717 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2718 JVM_END |
2719 | |
2720 | |
2721 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2722 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2723 | |
2724 //%note jvm_r6 | |
1980
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diff
changeset
|
2725 return (jint)os::write(fd, buf, nbytes); |
0 | 2726 JVM_END |
2727 | |
2728 | |
2729 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2730 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2731 //%note jvm_r6 | |
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ikrylov
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diff
changeset
|
2732 return os::available(fd, pbytes); |
0 | 2733 JVM_END |
2734 | |
2735 | |
2736 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
17937
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|
2737 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
0 | 2738 //%note jvm_r6 |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2739 return os::lseek(fd, offset, whence); |
0 | 2740 JVM_END |
2741 | |
2742 | |
2743 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
17937
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changeset
|
2744 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2745 return os::ftruncate(fd, length); |
0 | 2746 JVM_END |
2747 | |
2748 | |
2749 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2750 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2751 //%note jvm_r6 | |
1980
828eafbd85cc
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ikrylov
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diff
changeset
|
2752 return os::fsync(fd); |
0 | 2753 JVM_END |
2754 | |
2755 | |
2756 // Printing support ////////////////////////////////////////////////// | |
2757 extern "C" { | |
2758 | |
17937
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drchase
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diff
changeset
|
2759 ATTRIBUTE_PRINTF(3, 0) |
0 | 2760 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
2761 // see bug 4399518, 4417214 | |
2762 if ((intptr_t)count <= 0) return -1; | |
2763 return vsnprintf(str, count, fmt, args); | |
2764 } | |
2765 | |
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2766 ATTRIBUTE_PRINTF(3, 0) |
0 | 2767 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
2768 va_list args; | |
2769 int len; | |
2770 va_start(args, fmt); | |
2771 len = jio_vsnprintf(str, count, fmt, args); | |
2772 va_end(args); | |
2773 return len; | |
2774 } | |
2775 | |
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|
2776 ATTRIBUTE_PRINTF(2,3) |
0 | 2777 int jio_fprintf(FILE* f, const char *fmt, ...) { |
2778 int len; | |
2779 va_list args; | |
2780 va_start(args, fmt); | |
2781 len = jio_vfprintf(f, fmt, args); | |
2782 va_end(args); | |
2783 return len; | |
2784 } | |
2785 | |
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|
2786 ATTRIBUTE_PRINTF(2, 0) |
0 | 2787 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
2788 if (Arguments::vfprintf_hook() != NULL) { | |
2789 return Arguments::vfprintf_hook()(f, fmt, args); | |
2790 } else { | |
2791 return vfprintf(f, fmt, args); | |
2792 } | |
2793 } | |
2794 | |
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|
2795 ATTRIBUTE_PRINTF(1, 2) |
2191 | 2796 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2797 int len; |
2798 va_list args; | |
2799 va_start(args, fmt); | |
2800 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2801 va_end(args); | |
2802 return len; | |
2803 } | |
2804 | |
2805 | |
2806 // HotSpot specific jio method | |
2807 void jio_print(const char* s) { | |
2808 // Try to make this function as atomic as possible. | |
2809 if (Arguments::vfprintf_hook() != NULL) { | |
2810 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2811 } else { | |
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|
2812 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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|
2813 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2814 } |
2815 } | |
2816 | |
2817 } // Extern C | |
2818 | |
2819 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2820 | |
2821 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2822 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2823 // OSThread objects. The exception to this rule is when the target object is the thread | |
2824 // doing the operation, in which case we know that the thread won't exit until the | |
2825 // operation is done (all exits being voluntary). There are a few cases where it is | |
2826 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2827 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2828 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2829 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2830 // implementation is local to this file, we always lock Threads_lock for that one. | |
2831 | |
2832 static void thread_entry(JavaThread* thread, TRAPS) { | |
2833 HandleMark hm(THREAD); | |
2834 Handle obj(THREAD, thread->threadObj()); | |
2835 JavaValue result(T_VOID); | |
2836 JavaCalls::call_virtual(&result, | |
2837 obj, | |
1142 | 2838 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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|
2839 vmSymbols::run_method_name(), |
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|
2840 vmSymbols::void_method_signature(), |
0 | 2841 THREAD); |
2842 } | |
2843 | |
2844 | |
2845 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2846 JVMWrapper("JVM_StartThread"); | |
2847 JavaThread *native_thread = NULL; | |
2848 | |
2849 // We cannot hold the Threads_lock when we throw an exception, | |
2850 // due to rank ordering issues. Example: we might need to grab the | |
2851 // Heap_lock while we construct the exception. | |
2852 bool throw_illegal_thread_state = false; | |
2853 | |
2854 // We must release the Threads_lock before we can post a jvmti event | |
2855 // in Thread::start. | |
2856 { | |
2857 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2858 // we operate. | |
2859 MutexLocker mu(Threads_lock); | |
2860 | |
2162
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2861 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
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2862 // re-starting an already started thread, so we should usually find |
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|
2863 // that the JavaThread is null. However for a JNI attached thread |
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|
2864 // there is a small window between the Thread object being created |
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|
2865 // (with its JavaThread set) and the update to its threadStatus, so we |
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|
2866 // have to check for this |
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|
2867 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
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|
2868 throw_illegal_thread_state = true; |
0 | 2869 } else { |
2162
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|
2870 // We could also check the stillborn flag to see if this thread was already stopped, but |
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|
2871 // for historical reasons we let the thread detect that itself when it starts running |
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|
2872 |
0 | 2873 jlong size = |
2874 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2875 // Allocate the C++ Thread structure and create the native thread. The | |
2876 // stack size retrieved from java is signed, but the constructor takes | |
2877 // size_t (an unsigned type), so avoid passing negative values which would | |
2878 // result in really large stacks. | |
2879 size_t sz = size > 0 ? (size_t) size : 0; | |
2880 native_thread = new JavaThread(&thread_entry, sz); | |
2881 | |
2882 // At this point it may be possible that no osthread was created for the | |
2883 // JavaThread due to lack of memory. Check for this situation and throw | |
2884 // an exception if necessary. Eventually we may want to change this so | |
2885 // that we only grab the lock if the thread was created successfully - | |
2886 // then we can also do this check and throw the exception in the | |
2887 // JavaThread constructor. | |
2888 if (native_thread->osthread() != NULL) { | |
2889 // Note: the current thread is not being used within "prepare". | |
2890 native_thread->prepare(jthread); | |
2891 } | |
2892 } | |
2893 } | |
2894 | |
2895 if (throw_illegal_thread_state) { | |
2896 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2897 } | |
2898 | |
2899 assert(native_thread != NULL, "Starting null thread?"); | |
2900 | |
2901 if (native_thread->osthread() == NULL) { | |
2902 // No one should hold a reference to the 'native_thread'. | |
2903 delete native_thread; | |
2904 if (JvmtiExport::should_post_resource_exhausted()) { | |
2905 JvmtiExport::post_resource_exhausted( | |
2906 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2907 "unable to create new native thread"); | |
2908 } | |
2909 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2910 "unable to create new native thread"); | |
2911 } | |
2912 | |
2913 Thread::start(native_thread); | |
2914 | |
2915 JVM_END | |
2916 | |
2917 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2918 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2919 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
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|
2920 // same thread as the sender, no safepoint is needed. |
0 | 2921 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2922 JVMWrapper("JVM_StopThread"); | |
2923 | |
2924 oop java_throwable = JNIHandles::resolve(throwable); | |
2925 if (java_throwable == NULL) { | |
2926 THROW(vmSymbols::java_lang_NullPointerException()); | |
2927 } | |
2928 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2929 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
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7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
2930 Events::log_exception(JavaThread::current(), |
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diff
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|
2931 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
17937
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|
2932 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
2162
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|
2933 // First check if thread is alive |
0 | 2934 if (receiver != NULL) { |
2935 // Check if exception is getting thrown at self (use oop equality, since the | |
2936 // target object might exit) | |
2937 if (java_thread == thread->threadObj()) { | |
2938 THROW_OOP(java_throwable); | |
2939 } else { | |
2940 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2941 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2942 } | |
2943 } | |
2162
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|
2944 else { |
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changeset
|
2945 // Either: |
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changeset
|
2946 // - target thread has not been started before being stopped, or |
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diff
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|
2947 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2948 // We could read the threadStatus to determine which case it is |
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diff
changeset
|
2949 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
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diff
changeset
|
2950 // stillborn flag for the first case, and if the thread has already |
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diff
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|
2951 // exited setting this flag has no affect |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2952 java_lang_Thread::set_stillborn(java_thread); |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2953 } |
0 | 2954 JVM_END |
2955 | |
2956 | |
2957 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2958 JVMWrapper("JVM_IsThreadAlive"); | |
2959 | |
2960 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2961 return java_lang_Thread::is_alive(thread_oop); | |
2962 JVM_END | |
2963 | |
2964 | |
2965 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2966 JVMWrapper("JVM_SuspendThread"); | |
2967 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2968 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2969 | |
2970 if (receiver != NULL) { | |
2971 // thread has run and has not exited (still on threads list) | |
2972 | |
2973 { | |
2974 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2975 if (receiver->is_external_suspend()) { | |
2976 // Don't allow nested external suspend requests. We can't return | |
2977 // an error from this interface so just ignore the problem. | |
2978 return; | |
2979 } | |
2980 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2981 return; | |
2982 } | |
2983 receiver->set_external_suspend(); | |
2984 } | |
2985 | |
2986 // java_suspend() will catch threads in the process of exiting | |
2987 // and will ignore them. | |
2988 receiver->java_suspend(); | |
2989 | |
2990 // It would be nice to have the following assertion in all the | |
2991 // time, but it is possible for a racing resume request to have | |
2992 // resumed this thread right after we suspended it. Temporarily | |
2993 // enable this assertion if you are chasing a different kind of | |
2994 // bug. | |
2995 // | |
2996 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2997 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2998 } | |
2999 JVM_END | |
3000 | |
3001 | |
3002 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
3003 JVMWrapper("JVM_ResumeThread"); | |
3004 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
3005 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3006 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3007 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3008 // looks at it. | |
3009 MutexLocker ml(Threads_lock); | |
3010 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3011 if (thr != NULL) { | |
3012 // the thread has run and is not in the process of exiting | |
3013 thr->java_resume(); | |
3014 } | |
3015 JVM_END | |
3016 | |
3017 | |
3018 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3019 JVMWrapper("JVM_SetThreadPriority"); | |
3020 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3021 MutexLocker ml(Threads_lock); | |
3022 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3023 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3024 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3025 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3026 Thread::set_priority(thr, (ThreadPriority)prio); | |
3027 } | |
3028 JVM_END | |
3029 | |
3030 | |
3031 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3032 JVMWrapper("JVM_Yield"); | |
3033 if (os::dont_yield()) return; | |
4006 | 3034 #ifndef USDT2 |
1324
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6935224: Adding new DTrace probes to work with Palantir
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1144
diff
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|
3035 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3036 #else /* USDT2 */ |
3037 HOTSPOT_THREAD_YIELD(); | |
3038 #endif /* USDT2 */ | |
0 | 3039 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3040 // Critical for similar threading behaviour | |
3041 if (ConvertYieldToSleep) { | |
3042 os::sleep(thread, MinSleepInterval, false); | |
3043 } else { | |
3044 os::yield(); | |
3045 } | |
3046 JVM_END | |
3047 | |
3048 | |
3049 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3050 JVMWrapper("JVM_Sleep"); | |
3051 | |
3052 if (millis < 0) { | |
3053 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3054 } | |
3055 | |
3056 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3057 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3058 } | |
3059 | |
3060 // Save current thread state and restore it at the end of this block. | |
3061 // And set new thread state to SLEEPING. | |
3062 JavaThreadSleepState jtss(thread); | |
3063 | |
4006 | 3064 #ifndef USDT2 |
1324
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1144
diff
changeset
|
3065 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3066 #else /* USDT2 */ |
3067 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3068 millis); | |
3069 #endif /* USDT2 */ | |
1324
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|
3070 |
10405 | 3071 EventThreadSleep event; |
3072 | |
0 | 3073 if (millis == 0) { |
3074 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3075 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3076 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3077 // for SOLARIS | |
3078 if (ConvertSleepToYield) { | |
3079 os::yield(); | |
3080 } else { | |
3081 ThreadState old_state = thread->osthread()->get_state(); | |
3082 thread->osthread()->set_state(SLEEPING); | |
3083 os::sleep(thread, MinSleepInterval, false); | |
3084 thread->osthread()->set_state(old_state); | |
3085 } | |
3086 } else { | |
3087 ThreadState old_state = thread->osthread()->get_state(); | |
3088 thread->osthread()->set_state(SLEEPING); | |
3089 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3090 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3091 // us while we were sleeping. We do not overwrite those. | |
3092 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3093 if (event.should_commit()) { |
3094 event.set_time(millis); | |
3095 event.commit(); | |
3096 } | |
4006 | 3097 #ifndef USDT2 |
1324
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1144
diff
changeset
|
3098 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3099 #else /* USDT2 */ |
3100 HOTSPOT_THREAD_SLEEP_END( | |
3101 1); | |
3102 #endif /* USDT2 */ | |
0 | 3103 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3104 // to properly restore the thread state. That's likely wrong. | |
3105 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3106 } | |
3107 } | |
3108 thread->osthread()->set_state(old_state); | |
3109 } | |
10405 | 3110 if (event.should_commit()) { |
3111 event.set_time(millis); | |
3112 event.commit(); | |
3113 } | |
4006 | 3114 #ifndef USDT2 |
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|
3115 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3116 #else /* USDT2 */ |
3117 HOTSPOT_THREAD_SLEEP_END( | |
3118 0); | |
3119 #endif /* USDT2 */ | |
0 | 3120 JVM_END |
3121 | |
3122 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3123 JVMWrapper("JVM_CurrentThread"); | |
3124 oop jthread = thread->threadObj(); | |
3125 assert (thread != NULL, "no current thread!"); | |
3126 return JNIHandles::make_local(env, jthread); | |
3127 JVM_END | |
3128 | |
3129 | |
3130 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3131 JVMWrapper("JVM_CountStackFrames"); | |
3132 | |
3133 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3134 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3135 bool throw_illegal_thread_state = false; | |
3136 int count = 0; | |
3137 | |
3138 { | |
3139 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3140 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3141 // acquire of the lock | |
3142 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3143 | |
3144 if (thr == NULL) { | |
3145 // do nothing | |
3146 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3147 // Check whether this java thread has been suspended already. If not, throws | |
3148 // IllegalThreadStateException. We defer to throw that exception until | |
3149 // Threads_lock is released since loading exception class has to leave VM. | |
3150 // The correct way to test a thread is actually suspended is | |
3151 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3152 // the Threads_lock. The above tests are sufficient for our purposes | |
3153 // provided the walkability of the stack is stable - which it isn't | |
3154 // 100% but close enough for most practical purposes. | |
3155 throw_illegal_thread_state = true; | |
3156 } else { | |
3157 // Count all java activation, i.e., number of vframes | |
3158 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3159 // Native frames are not counted | |
3160 if (!vfst.method()->is_native()) count++; | |
3161 } | |
3162 } | |
3163 } | |
3164 | |
3165 if (throw_illegal_thread_state) { | |
3166 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3167 "this thread is not suspended"); | |
3168 } | |
3169 return count; | |
3170 JVM_END | |
3171 | |
3172 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3173 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3174 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3175 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3176 // outside the critical section. Threads_lock is hot so we want to minimize | |
3177 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3178 // two steps. The 1st phase, performed under Threads_lock, would return | |
3179 // a closure that'd be invoked after Threads_lock was dropped. | |
3180 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3181 // admit spurious wakeups. | |
3182 | |
3183 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3184 JVMWrapper("JVM_Interrupt"); | |
3185 | |
3186 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3187 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3188 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3189 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3190 // acquire of the lock | |
3191 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3192 if (thr != NULL) { | |
3193 Thread::interrupt(thr); | |
3194 } | |
3195 JVM_END | |
3196 | |
3197 | |
3198 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3199 JVMWrapper("JVM_IsInterrupted"); | |
3200 | |
3201 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3202 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3203 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3204 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3205 // acquire of the lock | |
3206 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3207 if (thr == NULL) { | |
3208 return JNI_FALSE; | |
3209 } else { | |
3210 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3211 } | |
3212 JVM_END | |
3213 | |
3214 | |
3215 // Return true iff the current thread has locked the object passed in | |
3216 | |
3217 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3218 JVMWrapper("JVM_HoldsLock"); | |
3219 assert(THREAD->is_Java_thread(), "sanity check"); | |
3220 if (obj == NULL) { | |
3221 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3222 } | |
3223 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3224 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3225 JVM_END | |
3226 | |
3227 | |
3228 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3229 JVMWrapper("JVM_DumpAllStacks"); | |
3230 VM_PrintThreads op; | |
3231 VMThread::execute(&op); | |
3232 if (JvmtiExport::should_post_data_dump()) { | |
3233 JvmtiExport::post_data_dump(); | |
3234 } | |
3235 JVM_END | |
3236 | |
4006 | 3237 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3238 JVMWrapper("JVM_SetNativeThreadName"); | |
3239 ResourceMark rm(THREAD); | |
3240 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3241 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3242 // Thread naming only supported for the current thread, doesn't work for | |
3243 // target threads. | |
3244 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3245 // we don't set the name of an attached thread to avoid stepping | |
3246 // on other programs | |
3247 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3248 os::set_native_thread_name(thread_name); | |
3249 } | |
3250 JVM_END | |
0 | 3251 |
3252 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3253 | |
3254 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3255 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3256 if (jthread->privileged_stack_top() == NULL) return false; | |
3257 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3258 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3259 if (loader == NULL) return true; | |
3260 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3261 if (trusted) return true; | |
3262 } | |
3263 return false; | |
3264 } | |
3265 | |
3266 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3267 JVMWrapper("JVM_CurrentLoadedClass"); | |
3268 ResourceMark rm(THREAD); | |
3269 | |
3270 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3271 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3272 bool trusted = is_trusted_frame(thread, &vfst); | |
3273 if (trusted) return NULL; | |
3274 | |
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3275 Method* m = vfst.method(); |
0 | 3276 if (!m->is_native()) { |
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3277 InstanceKlass* holder = m->method_holder(); |
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3278 oop loader = holder->class_loader(); |
0 | 3279 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
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|
3280 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3281 } |
3282 } | |
3283 } | |
3284 return NULL; | |
3285 JVM_END | |
3286 | |
3287 | |
3288 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3289 JVMWrapper("JVM_CurrentClassLoader"); | |
3290 ResourceMark rm(THREAD); | |
3291 | |
3292 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3293 | |
3294 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3295 bool trusted = is_trusted_frame(thread, &vfst); | |
3296 if (trusted) return NULL; | |
3297 | |
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3298 Method* m = vfst.method(); |
0 | 3299 if (!m->is_native()) { |
6940
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3300 InstanceKlass* holder = m->method_holder(); |
0 | 3301 assert(holder->is_klass(), "just checking"); |
6940
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3302 oop loader = holder->class_loader(); |
0 | 3303 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3304 return JNIHandles::make_local(env, loader); | |
3305 } | |
3306 } | |
3307 } | |
3308 return NULL; | |
3309 JVM_END | |
3310 | |
3311 | |
3312 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3313 JVMWrapper("JVM_GetClassContext"); | |
3314 ResourceMark rm(THREAD); | |
3315 JvmtiVMObjectAllocEventCollector oam; | |
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3316 vframeStream vfst(thread); |
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|
3317 |
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|
3318 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3319 // This must only be called from SecurityManager.getClassContext |
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3320 Method* m = vfst.method(); |
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3321 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3322 m->name() == vmSymbols::getClassContext_name() && |
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3323 m->signature() == vmSymbols::void_class_array_signature())) { |
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3324 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3325 } |
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|
3326 } |
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|
3327 |
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|
3328 // Collect method holders |
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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changeset
|
3329 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3330 for (; !vfst.at_end(); vfst.security_next()) { |
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3331 Method* m = vfst.method(); |
0 | 3332 // Native frames are not returned |
8866
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3333 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3334 Klass* holder = m->method_holder(); |
0 | 3335 assert(holder->is_klass(), "just checking"); |
11001
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|
3336 klass_array->append(holder); |
0 | 3337 } |
3338 } | |
3339 | |
3340 // Create result array of type [Ljava/lang/Class; | |
11001
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3341 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3342 // Fill in mirrors corresponding to method holders |
11001
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|
3343 for (int i = 0; i < klass_array->length(); i++) { |
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|
3344 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3345 } |
3346 | |
3347 return (jobjectArray) JNIHandles::make_local(env, result); | |
3348 JVM_END | |
3349 | |
3350 | |
3351 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3352 JVMWrapper("JVM_ClassDepth"); | |
3353 ResourceMark rm(THREAD); | |
3354 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3355 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3356 | |
3357 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
3358 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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changeset
|
3359 if (class_name_sym == NULL) { |
0 | 3360 return -1; |
3361 } | |
3362 | |
3363 int depth = 0; | |
3364 | |
3365 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3366 if (!vfst.method()->is_native()) { | |
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|
3367 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3368 assert(holder->is_klass(), "just checking"); |
6940
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|
3369 if (holder->name() == class_name_sym) { |
0 | 3370 return depth; |
3371 } | |
3372 depth++; | |
3373 } | |
3374 } | |
3375 return -1; | |
3376 JVM_END | |
3377 | |
3378 | |
3379 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3380 JVMWrapper("JVM_ClassLoaderDepth"); | |
3381 ResourceMark rm(THREAD); | |
3382 int depth = 0; | |
3383 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3384 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3385 bool trusted = is_trusted_frame(thread, &vfst); | |
3386 if (trusted) return -1; | |
3387 | |
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3388 Method* m = vfst.method(); |
0 | 3389 if (!m->is_native()) { |
6940
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|
3390 InstanceKlass* holder = m->method_holder(); |
0 | 3391 assert(holder->is_klass(), "just checking"); |
6940
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|
3392 oop loader = holder->class_loader(); |
0 | 3393 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3394 return depth; | |
3395 } | |
3396 depth++; | |
3397 } | |
3398 } | |
3399 return -1; | |
3400 JVM_END | |
3401 | |
3402 | |
3403 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3404 | |
3405 | |
3406 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3407 JVMWrapper("JVM_GetSystemPackage"); | |
3408 ResourceMark rm(THREAD); | |
3409 JvmtiVMObjectAllocEventCollector oam; | |
3410 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3411 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3412 return (jstring) JNIHandles::make_local(result); | |
3413 JVM_END | |
3414 | |
3415 | |
3416 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3417 JVMWrapper("JVM_GetSystemPackages"); | |
3418 JvmtiVMObjectAllocEventCollector oam; | |
3419 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3420 return (jobjectArray) JNIHandles::make_local(result); | |
3421 JVM_END | |
3422 | |
3423 | |
3424 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3425 | |
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3426 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3427 if (current_class == NULL) { |
3428 return true; | |
3429 } | |
3430 if ((current_class == field_class) || access.is_public()) { | |
3431 return true; | |
3432 } | |
3433 | |
3434 if (access.is_protected()) { | |
3435 // See if current_class is a subclass of field_class | |
6983 | 3436 if (current_class->is_subclass_of(field_class)) { |
0 | 3437 return true; |
3438 } | |
3439 } | |
3440 | |
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3441 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3442 } |
3443 | |
3444 | |
3445 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3446 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3447 JVMWrapper("JVM_AllocateNewObject"); | |
3448 JvmtiVMObjectAllocEventCollector oam; | |
3449 // Receiver is not used | |
3450 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3451 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3452 | |
3453 // Cannot instantiate primitive types | |
3454 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3455 ResourceMark rm(THREAD); | |
3456 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3457 } | |
3458 | |
3459 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3460 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3461 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3462 ResourceMark rm(THREAD); |
3463 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3464 } | |
3465 | |
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|
3466 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3467 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3468 |
3469 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3470 | |
3471 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3472 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3473 | |
3474 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3475 curr_klass->initialize(CHECK_NULL); | |
3476 | |
3477 methodHandle m (THREAD, | |
3478 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3479 vmSymbols::void_method_signature())); | |
3480 if (m.is_null()) { | |
3481 ResourceMark rm(THREAD); | |
3482 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3483 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3484 vmSymbols::object_initializer_name(), |
3485 vmSymbols::void_method_signature())); | |
3486 } | |
3487 | |
3488 if (curr_klass == init_klass && !m->is_public()) { | |
3489 // Calling the constructor for class 'curr_klass'. | |
3490 // Only allow calls to a public no-arg constructor. | |
3491 // This path corresponds to creating an Externalizable object. | |
3492 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3493 } | |
3494 | |
3495 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3496 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3497 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3498 } | |
3499 | |
3500 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3501 // Call constructor m. This might call a constructor higher up in the hierachy | |
3502 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3503 | |
3504 return JNIHandles::make_local(obj()); | |
3505 JVM_END | |
3506 | |
3507 | |
3508 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3509 JVMWrapper("JVM_AllocateNewArray"); | |
3510 JvmtiVMObjectAllocEventCollector oam; | |
3511 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3512 | |
3513 if (java_lang_Class::is_primitive(mirror)) { | |
3514 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3515 } | |
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3516 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3517 oop result; |
3518 | |
6725
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diff
changeset
|
3519 if (k->oop_is_typeArray()) { |
0 | 3520 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3521 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
da91efe96a93
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diff
changeset
|
3522 } else if (k->oop_is_objArray()) { |
0 | 3523 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3524 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3525 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3526 result = oak->allocate(length, CHECK_NULL); | |
3527 } else { | |
3528 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3529 } | |
3530 return JNIHandles::make_local(env, result); | |
3531 JVM_END | |
3532 | |
3533 | |
3534 // Return the first non-null class loader up the execution stack, or null | |
3535 // if only code from the null class loader is on the stack. | |
3536 | |
3537 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3538 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3539 // UseNewReflection | |
3540 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
|
3541 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3542 if (loader != NULL) { |
3543 return JNIHandles::make_local(env, loader); | |
3544 } | |
3545 } | |
3546 return NULL; | |
3547 JVM_END | |
3548 | |
3549 | |
3550 // Load a class relative to the most recent class on the stack with a non-null | |
3551 // classloader. | |
3552 // This function has been deprecated and should not be considered part of the | |
3553 // specified JVM interface. | |
3554 | |
3555 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3556 jclass currClass, jstring currClassName)) | |
3557 JVMWrapper("JVM_LoadClass0"); | |
3558 // Receiver is not used | |
3559 ResourceMark rm(THREAD); | |
3560 | |
3561 // Class name argument is not guaranteed to be in internal format | |
3562 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3563 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3564 | |
3565 const char* str = java_lang_String::as_utf8_string(string()); | |
3566 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3567 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3568 // It's impossible to create this class; the name cannot fit |
3569 // into the constant pool. | |
3570 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3571 } | |
3572 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
3573 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3574 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3575 // Find the most recent class on the stack with a non-null classloader | |
3576 oop loader = NULL; | |
3577 oop protection_domain = NULL; | |
3578 if (curr_klass.is_null()) { | |
3579 for (vframeStream vfst(thread); | |
3580 !vfst.at_end() && loader == NULL; | |
3581 vfst.next()) { | |
3582 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
|
3583 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
|
3584 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3585 protection_domain = holder->protection_domain(); |
0 | 3586 } |
3587 } | |
3588 } else { | |
6725
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changeset
|
3589 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
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changeset
|
3590 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
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changeset
|
3591 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3592 } |
3593 Handle h_loader(THREAD, loader); | |
3594 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3595 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
|
3596 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3597 if (TraceClassResolution && result != NULL) { |
6725
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changeset
|
3598 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
|
3599 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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parents:
579
diff
changeset
|
3600 return result; |
0 | 3601 JVM_END |
3602 | |
3603 | |
3604 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3605 | |
3606 | |
3607 // resolve array handle and check arguments | |
3608 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3609 if (arr == NULL) { | |
3610 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3611 } | |
3612 oop a = JNIHandles::resolve_non_null(arr); | |
6725
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diff
changeset
|
3613 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3614 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3615 } | |
3616 return arrayOop(a); | |
3617 } | |
3618 | |
3619 | |
3620 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3621 JVMWrapper("JVM_GetArrayLength"); | |
3622 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3623 return a->length(); | |
3624 JVM_END | |
3625 | |
3626 | |
3627 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3628 JVMWrapper("JVM_Array_Get"); | |
3629 JvmtiVMObjectAllocEventCollector oam; | |
3630 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3631 jvalue value; | |
3632 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3633 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3634 return JNIHandles::make_local(env, box); | |
3635 JVM_END | |
3636 | |
3637 | |
3638 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3639 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3640 jvalue value; | |
3641 value.i = 0; // to initialize value before getting used in CHECK | |
3642 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3643 assert(a->is_typeArray(), "just checking"); | |
3644 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3645 BasicType wide_type = (BasicType) wCode; | |
3646 if (type != wide_type) { | |
3647 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3648 } | |
3649 return value; | |
3650 JVM_END | |
3651 | |
3652 | |
3653 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3654 JVMWrapper("JVM_SetArrayElement"); | |
3655 arrayOop a = check_array(env, arr, false, CHECK); | |
3656 oop box = JNIHandles::resolve(val); | |
3657 jvalue value; | |
3658 value.i = 0; // to initialize value before getting used in CHECK | |
3659 BasicType value_type; | |
3660 if (a->is_objArray()) { | |
3661 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3662 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3663 } else { | |
3664 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3665 } | |
3666 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3667 JVM_END | |
3668 | |
3669 | |
3670 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3671 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3672 arrayOop a = check_array(env, arr, true, CHECK); | |
3673 assert(a->is_typeArray(), "just checking"); | |
3674 BasicType value_type = (BasicType) vCode; | |
3675 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3676 JVM_END | |
3677 | |
3678 | |
3679 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3680 JVMWrapper("JVM_NewArray"); | |
3681 JvmtiVMObjectAllocEventCollector oam; | |
3682 oop element_mirror = JNIHandles::resolve(eltClass); | |
3683 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3684 return JNIHandles::make_local(env, result); | |
3685 JVM_END | |
3686 | |
3687 | |
3688 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3689 JVMWrapper("JVM_NewMultiArray"); | |
3690 JvmtiVMObjectAllocEventCollector oam; | |
3691 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3692 oop element_mirror = JNIHandles::resolve(eltClass); | |
3693 assert(dim_array->is_typeArray(), "just checking"); | |
3694 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3695 return JNIHandles::make_local(env, result); | |
3696 JVM_END | |
3697 | |
3698 | |
3699 // Networking library support //////////////////////////////////////////////////////////////////// | |
3700 | |
3701 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3702 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3703 return 0; |
0 | 3704 JVM_END |
3705 | |
3706 | |
3707 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3708 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3709 return os::socket(domain, type, protocol); |
0 | 3710 JVM_END |
3711 | |
3712 | |
3713 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3714 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3715 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3716 return os::socket_close(fd); |
0 | 3717 JVM_END |
3718 | |
3719 | |
3720 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3721 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3722 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3723 return os::socket_shutdown(fd, howto); |
0 | 3724 JVM_END |
3725 | |
3726 | |
3727 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3728 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3729 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3730 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3731 JVM_END |
3732 | |
3733 | |
3734 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3735 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3736 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3737 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3738 JVM_END |
3739 | |
3740 | |
3741 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3742 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3743 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3744 return os::timeout(fd, timeout); |
0 | 3745 JVM_END |
3746 | |
3747 | |
3748 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3749 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3750 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3751 return os::listen(fd, count); |
0 | 3752 JVM_END |
3753 | |
3754 | |
3755 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3756 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3757 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3758 return os::connect(fd, him, (socklen_t)len); |
0 | 3759 JVM_END |
3760 | |
3761 | |
3762 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3763 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3764 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3765 return os::bind(fd, him, (socklen_t)len); |
0 | 3766 JVM_END |
3767 | |
3768 | |
3769 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3770 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3771 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3772 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3773 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3774 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3775 return result; |
0 | 3776 JVM_END |
3777 | |
3778 | |
3779 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3780 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3781 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3782 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3783 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
|
3784 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3785 return result; |
0 | 3786 JVM_END |
3787 | |
3788 | |
3789 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3790 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3791 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3792 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3793 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
|
3794 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3795 return result; |
0 | 3796 JVM_END |
3797 | |
3798 | |
3799 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3800 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3801 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3802 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3803 JVM_END |
3804 | |
3805 | |
3806 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3807 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3808 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3809 return os::socket_available(fd, pbytes); |
0 | 3810 JVM_END |
3811 | |
3812 | |
3813 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3814 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3815 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3816 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3817 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3818 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3819 return result; |
0 | 3820 JVM_END |
3821 | |
3822 | |
3823 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3824 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3825 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3826 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3827 JVM_END |
3828 | |
4717
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diff
changeset
|
3829 |
0 | 3830 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3831 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
3832 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
3833 JVM_END |
0 | 3834 |
4717
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diff
changeset
|
3835 |
0 | 3836 // Library support /////////////////////////////////////////////////////////////////////////// |
3837 | |
3838 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3839 //%note jvm_ct | |
3840 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3841 char ebuf[1024]; | |
3842 void *load_result; | |
3843 { | |
3844 ThreadToNativeFromVM ttnfvm(thread); | |
1980
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diff
changeset
|
3845 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3846 } |
3847 if (load_result == NULL) { | |
3848 char msg[1024]; | |
3849 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3850 // Since 'ebuf' may contain a string encoded using | |
3851 // platform encoding scheme, we need to pass | |
3852 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3853 // as the last argument. See bug 6367357. | |
3854 Handle h_exception = | |
3855 Exceptions::new_exception(thread, | |
3856 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3857 msg, Exceptions::unsafe_to_utf8); | |
3858 | |
3859 THROW_HANDLE_0(h_exception); | |
3860 } | |
3861 return load_result; | |
3862 JVM_END | |
3863 | |
3864 | |
3865 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3866 JVMWrapper("JVM_UnloadLibrary"); | |
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diff
changeset
|
3867 os::dll_unload(handle); |
0 | 3868 JVM_END |
3869 | |
3870 | |
3871 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3872 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
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diff
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|
3873 return os::dll_lookup(handle, name); |
0 | 3874 JVM_END |
3875 | |
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diff
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|
3876 |
0 | 3877 // Floating point support //////////////////////////////////////////////////////////////////// |
3878 | |
3879 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3880 JVMWrapper("JVM_IsNaN"); | |
3881 return g_isnan(a); | |
3882 JVM_END | |
3883 | |
3884 | |
3885 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3886 | |
3887 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3888 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3889 return Threads::is_supported_jni_version_including_1_1(version); | |
3890 JVM_END | |
3891 | |
3892 | |
3893 // String support /////////////////////////////////////////////////////////////////////////// | |
3894 | |
3895 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3896 JVMWrapper("JVM_InternString"); | |
3897 JvmtiVMObjectAllocEventCollector oam; | |
3898 if (str == NULL) return NULL; | |
3899 oop string = JNIHandles::resolve_non_null(str); | |
3900 oop result = StringTable::intern(string, CHECK_NULL); | |
3901 return (jstring) JNIHandles::make_local(env, result); | |
3902 JVM_END | |
3903 | |
3904 | |
3905 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3906 | |
3907 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3908 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3909 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3910 // that only works with java threads. | |
3911 | |
3912 | |
3913 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3914 VM_Exit::block_if_vm_exited(); | |
3915 JVMWrapper("JVM_RawMonitorCreate"); | |
3916 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3917 } | |
3918 | |
3919 | |
3920 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3921 VM_Exit::block_if_vm_exited(); | |
3922 JVMWrapper("JVM_RawMonitorDestroy"); | |
3923 delete ((Mutex*) mon); | |
3924 } | |
3925 | |
3926 | |
3927 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3928 VM_Exit::block_if_vm_exited(); | |
3929 JVMWrapper("JVM_RawMonitorEnter"); | |
3930 ((Mutex*) mon)->jvm_raw_lock(); | |
3931 return 0; | |
3932 } | |
3933 | |
3934 | |
3935 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3936 VM_Exit::block_if_vm_exited(); | |
3937 JVMWrapper("JVM_RawMonitorExit"); | |
3938 ((Mutex*) mon)->jvm_raw_unlock(); | |
3939 } | |
3940 | |
3941 | |
3942 // Support for Serialization | |
3943 | |
3944 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3945 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3946 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3947 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3948 | |
3949 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3950 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3951 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3952 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3953 | |
3954 | |
3955 void initialize_converter_functions() { | |
3956 if (JDK_Version::is_gte_jdk14x_version()) { | |
3957 // These functions only exist for compatibility with 1.3.1 and earlier | |
3958 return; | |
3959 } | |
3960 | |
3961 // called from universe_post_init() | |
3962 assert( | |
3963 int_bits_to_float_fn == NULL && | |
3964 long_bits_to_double_fn == NULL && | |
3965 float_to_int_bits_fn == NULL && | |
3966 double_to_long_bits_fn == NULL , | |
3967 "initialization done twice" | |
3968 ); | |
3969 // initialize | |
3970 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3971 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3972 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3973 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3974 // verify | |
3975 assert( | |
3976 int_bits_to_float_fn != NULL && | |
3977 long_bits_to_double_fn != NULL && | |
3978 float_to_int_bits_fn != NULL && | |
3979 double_to_long_bits_fn != NULL , | |
3980 "initialization failed" | |
3981 ); | |
3982 } | |
3983 | |
3984 | |
3985 | |
3986 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3987 | |
2177
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|
3988 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 3989 // Security Note: |
3990 // The Java level wrapper will perform the necessary security check allowing | |
3991 // us to pass the NULL as the initiating class loader. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
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|
3992 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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875
diff
changeset
|
3993 |
0 | 3994 KlassHandle klass_handle(THREAD, klass); |
3995 // Check if we should initialize the class | |
3996 if (init && klass_handle->oop_is_instance()) { | |
3997 klass_handle->initialize(CHECK_NULL); | |
3998 } | |
3999 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4000 } | |
4001 | |
4002 | |
4003 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4004 | |
4005 #ifndef PRODUCT | |
4006 | |
4007 extern "C" { | |
4008 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4009 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4010 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4011 } | |
4012 | |
4013 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4014 JVMWrapper("JVM_AccessBoolVMFlag"); | |
12322
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twisti
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12264
diff
changeset
|
4015 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
0 | 4016 JVM_END |
4017 | |
4018 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4019 JVMWrapper("JVM_AccessVMIntFlag"); | |
4020 intx v; | |
12322
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diff
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|
4021 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
0 | 4022 *value = (jint)v; |
4023 return result; | |
4024 JVM_END | |
4025 | |
4026 | |
4027 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4028 JVMWrapper("JVM_VMBreakPoint"); | |
4029 oop the_obj = JNIHandles::resolve(obj); | |
4030 BREAKPOINT; | |
4031 JVM_END | |
4032 | |
4033 | |
4034 #endif | |
4035 | |
4036 | |
4037 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4038 | |
4039 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4040 JVMWrapper("JVM_InvokeMethod"); | |
4041 Handle method_handle; | |
4042 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4043 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4044 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4045 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4046 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4047 jobject res = JNIHandles::make_local(env, result); | |
4048 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4049 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4050 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4051 if (java_lang_Class::is_primitive(ret_type)) { | |
4052 // Only for primitive type vm allocates memory for java object. | |
4053 // See box() method. | |
4054 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4055 } | |
4056 } | |
4057 return res; | |
4058 } else { | |
4059 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4060 } | |
4061 JVM_END | |
4062 | |
4063 | |
4064 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4065 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4066 oop constructor_mirror = JNIHandles::resolve(c); | |
4067 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4068 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4069 jobject res = JNIHandles::make_local(env, result); | |
4070 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4071 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4072 } | |
4073 return res; | |
4074 JVM_END | |
4075 | |
4076 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4077 | |
4078 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4079 JVMWrapper("JVM_SupportsCX8"); | |
4080 return VM_Version::supports_cx8(); | |
4081 JVM_END | |
4082 | |
4083 | |
4084 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4085 JVMWrapper("JVM_CX8Field"); | |
4086 jlong res; | |
4087 oop o = JNIHandles::resolve(obj); | |
4088 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4089 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4090 | |
4091 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4092 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4093 | |
4094 return res == oldVal; | |
4095 JVM_END | |
4096 | |
116
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diff
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|
4097 // DTrace /////////////////////////////////////////////////////////////////// |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
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|
4098 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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0
diff
changeset
|
4099 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
changeset
|
4100 JVMWrapper("JVM_DTraceGetVersion"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
changeset
|
4101 return (jint)JVM_TRACING_DTRACE_VERSION; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
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|
4102 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4103 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4104 JVM_ENTRY(jlong,JVM_DTraceActivate( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4105 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4106 JVM_DTraceProvider* providers)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4107 JVMWrapper("JVM_DTraceActivate"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4108 return DTraceJSDT::activate( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4109 version, module_name, providers_count, providers, CHECK_0); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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diff
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|
4110 JVM_END |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4111 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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|
4112 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4113 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4114 return DTraceJSDT::is_probe_enabled(method); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4115 JVM_END |
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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|
4116 |
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|
4117 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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|
4118 JVMWrapper("JVM_DTraceDispose"); |
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|
4119 DTraceJSDT::dispose(handle); |
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4120 JVM_END |
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|
4121 |
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4122 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4123 JVMWrapper("JVM_DTraceIsSupported"); |
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4124 return DTraceJSDT::is_supported(); |
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|
4125 JVM_END |
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4126 |
0 | 4127 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4128 // jvmti agent threads, and JNI attaching threads are skipped) | |
4129 // See CR 6404306 regarding JNI attaching threads | |
4130 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4131 ResourceMark rm(THREAD); | |
4132 ThreadsListEnumerator tle(THREAD, false, false); | |
4133 JvmtiVMObjectAllocEventCollector oam; | |
4134 | |
4135 int num_threads = tle.num_threads(); | |
1142 | 4136 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4137 objArrayHandle threads_ah(THREAD, r); |
4138 | |
4139 for (int i = 0; i < num_threads; i++) { | |
4140 Handle h = tle.get_threadObj(i); | |
4141 threads_ah->obj_at_put(i, h()); | |
4142 } | |
4143 | |
4144 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4145 JVM_END | |
4146 | |
4147 | |
4148 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4149 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4150 // the corresponding entry in the given threads array | |
4151 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4152 JVMWrapper("JVM_DumpThreads"); | |
4153 JvmtiVMObjectAllocEventCollector oam; | |
4154 | |
4155 // Check if threads is null | |
4156 if (threads == NULL) { | |
4157 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4158 } | |
4159 | |
4160 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4161 objArrayHandle ah(THREAD, a); | |
4162 int num_threads = ah->length(); | |
4163 // check if threads is non-empty array | |
4164 if (num_threads == 0) { | |
4165 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4166 } | |
4167 | |
4168 // check if threads is not an array of objects of Thread class | |
6831
d8ce2825b193
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coleenp
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|
4169 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4170 if (k != SystemDictionary::Thread_klass()) { |
0 | 4171 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4172 } | |
4173 | |
4174 ResourceMark rm(THREAD); | |
4175 | |
4176 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4177 for (int i = 0; i < num_threads; i++) { | |
4178 oop thread_obj = ah->obj_at(i); | |
4179 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4180 thread_handle_array->append(h); | |
4181 } | |
4182 | |
4183 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4184 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4185 | |
4186 JVM_END | |
4187 | |
4188 // JVM monitoring and management support | |
4189 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4190 return Management::get_jmm_interface(version); | |
4191 JVM_END | |
4192 | |
4193 // com.sun.tools.attach.VirtualMachine agent properties support | |
4194 // | |
4195 // Initialize the agent properties with the properties maintained in the VM | |
4196 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4197 JVMWrapper("JVM_InitAgentProperties"); | |
4198 ResourceMark rm; | |
4199 | |
4200 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4201 | |
4202 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4203 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4204 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4205 return properties; | |
4206 JVM_END | |
4207 | |
4208 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4209 { | |
4210 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4211 JvmtiVMObjectAllocEventCollector oam; | |
4212 | |
4213 if (ofClass == NULL) { | |
4214 return NULL; | |
4215 } | |
4216 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4217 // Special handling for primitive objects | |
4218 if (java_lang_Class::is_primitive(mirror())) { | |
4219 return NULL; | |
4220 } | |
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|
4221 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4222 if (!k->oop_is_instance()) { |
0 | 4223 return NULL; |
4224 } | |
4225 instanceKlassHandle ik_h(THREAD, k); | |
4226 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4227 if (encl_method_class_idx == 0) { | |
4228 return NULL; | |
4229 } | |
1142 | 4230 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4231 objArrayHandle dest(THREAD, dest_o); |
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|
4232 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4233 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4234 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4235 if (encl_method_method_idx != 0) { | |
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2162
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|
4236 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4237 extract_low_short_from_int( |
4238 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4239 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4240 dest->obj_at_put(1, str()); | |
2177
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|
4241 sym = ik_h->constants()->symbol_at( |
0 | 4242 extract_high_short_from_int( |
4243 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4244 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4245 dest->obj_at_put(2, str()); | |
4246 } | |
4247 return (jobjectArray) JNIHandles::make_local(dest()); | |
4248 } | |
4249 JVM_END | |
4250 | |
4251 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4252 jint javaThreadState)) | |
4253 { | |
4254 // If new thread states are added in future JDK and VM versions, | |
4255 // this should check if the JDK version is compatible with thread | |
4256 // states supported by the VM. Return NULL if not compatible. | |
4257 // | |
4258 // This function must map the VM java_lang_Thread::ThreadStatus | |
4259 // to the Java thread state that the JDK supports. | |
4260 // | |
4261 | |
4262 typeArrayHandle values_h; | |
4263 switch (javaThreadState) { | |
4264 case JAVA_THREAD_STATE_NEW : { | |
4265 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4266 values_h = typeArrayHandle(THREAD, r); | |
4267 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4268 break; | |
4269 } | |
4270 case JAVA_THREAD_STATE_RUNNABLE : { | |
4271 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4272 values_h = typeArrayHandle(THREAD, r); | |
4273 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4274 break; | |
4275 } | |
4276 case JAVA_THREAD_STATE_BLOCKED : { | |
4277 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4278 values_h = typeArrayHandle(THREAD, r); | |
4279 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4280 break; | |
4281 } | |
4282 case JAVA_THREAD_STATE_WAITING : { | |
4283 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4284 values_h = typeArrayHandle(THREAD, r); | |
4285 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4286 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4287 break; | |
4288 } | |
4289 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4290 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4291 values_h = typeArrayHandle(THREAD, r); | |
4292 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4293 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4294 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4295 break; | |
4296 } | |
4297 case JAVA_THREAD_STATE_TERMINATED : { | |
4298 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4299 values_h = typeArrayHandle(THREAD, r); | |
4300 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4301 break; | |
4302 } | |
4303 default: | |
4304 // Unknown state - probably incompatible JDK version | |
4305 return NULL; | |
4306 } | |
4307 | |
4308 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4309 } | |
4310 JVM_END | |
4311 | |
4312 | |
4313 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4314 jint javaThreadState, | |
4315 jintArray values)) | |
4316 { | |
4317 // If new thread states are added in future JDK and VM versions, | |
4318 // this should check if the JDK version is compatible with thread | |
4319 // states supported by the VM. Return NULL if not compatible. | |
4320 // | |
4321 // This function must map the VM java_lang_Thread::ThreadStatus | |
4322 // to the Java thread state that the JDK supports. | |
4323 // | |
4324 | |
4325 ResourceMark rm; | |
4326 | |
4327 // Check if threads is null | |
4328 if (values == NULL) { | |
4329 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4330 } | |
4331 | |
4332 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4333 typeArrayHandle values_h(THREAD, v); | |
4334 | |
4335 objArrayHandle names_h; | |
4336 switch (javaThreadState) { | |
4337 case JAVA_THREAD_STATE_NEW : { | |
4338 assert(values_h->length() == 1 && | |
4339 values_h->int_at(0) == java_lang_Thread::NEW, | |
4340 "Invalid threadStatus value"); | |
4341 | |
1142 | 4342 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4343 1, /* only 1 substate */ |
4344 CHECK_NULL); | |
4345 names_h = objArrayHandle(THREAD, r); | |
4346 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4347 names_h->obj_at_put(0, name()); | |
4348 break; | |
4349 } | |
4350 case JAVA_THREAD_STATE_RUNNABLE : { | |
4351 assert(values_h->length() == 1 && | |
4352 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4353 "Invalid threadStatus value"); | |
4354 | |
1142 | 4355 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4356 1, /* only 1 substate */ |
4357 CHECK_NULL); | |
4358 names_h = objArrayHandle(THREAD, r); | |
4359 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4360 names_h->obj_at_put(0, name()); | |
4361 break; | |
4362 } | |
4363 case JAVA_THREAD_STATE_BLOCKED : { | |
4364 assert(values_h->length() == 1 && | |
4365 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4366 "Invalid threadStatus value"); | |
4367 | |
1142 | 4368 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4369 1, /* only 1 substate */ |
4370 CHECK_NULL); | |
4371 names_h = objArrayHandle(THREAD, r); | |
4372 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4373 names_h->obj_at_put(0, name()); | |
4374 break; | |
4375 } | |
4376 case JAVA_THREAD_STATE_WAITING : { | |
4377 assert(values_h->length() == 2 && | |
4378 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4379 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4380 "Invalid threadStatus value"); | |
1142 | 4381 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4382 2, /* number of substates */ |
4383 CHECK_NULL); | |
4384 names_h = objArrayHandle(THREAD, r); | |
4385 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4386 CHECK_NULL); | |
4387 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4388 CHECK_NULL); | |
4389 names_h->obj_at_put(0, name0()); | |
4390 names_h->obj_at_put(1, name1()); | |
4391 break; | |
4392 } | |
4393 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4394 assert(values_h->length() == 3 && | |
4395 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4396 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4397 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4398 "Invalid threadStatus value"); | |
1142 | 4399 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4400 3, /* number of substates */ |
4401 CHECK_NULL); | |
4402 names_h = objArrayHandle(THREAD, r); | |
4403 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4404 CHECK_NULL); | |
4405 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4406 CHECK_NULL); | |
4407 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4408 CHECK_NULL); | |
4409 names_h->obj_at_put(0, name0()); | |
4410 names_h->obj_at_put(1, name1()); | |
4411 names_h->obj_at_put(2, name2()); | |
4412 break; | |
4413 } | |
4414 case JAVA_THREAD_STATE_TERMINATED : { | |
4415 assert(values_h->length() == 1 && | |
4416 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4417 "Invalid threadStatus value"); | |
1142 | 4418 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4419 1, /* only 1 substate */ |
4420 CHECK_NULL); | |
4421 names_h = objArrayHandle(THREAD, r); | |
4422 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4423 names_h->obj_at_put(0, name()); | |
4424 break; | |
4425 } | |
4426 default: | |
4427 // Unknown state - probably incompatible JDK version | |
4428 return NULL; | |
4429 } | |
4430 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4431 } | |
4432 JVM_END | |
4433 | |
4434 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4435 { | |
4436 memset(info, 0, sizeof(info_size)); | |
4437 | |
4438 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4439 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4440 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4441 | |
4442 // when we add a new capability in the jvm_version_info struct, we should also | |
4443 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4444 // counter defined in runtimeService.cpp. | |
4445 info->is_attachable = AttachListener::is_attach_supported(); | |
4446 } | |
4447 JVM_END |