Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 11722:ff05c78a7f64
use time passed to decide what methods to compile or inline
author | Christian Wirth <christian.wirth@oracle.com> |
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date | Thu, 19 Sep 2013 10:36:56 +0200 |
parents | e636d62005c3 |
children | cefad50507d8 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
1972 | 34 #include "memory/oopFactory.hpp" |
35 #include "memory/universe.inline.hpp" | |
3938 | 36 #include "oops/fieldStreams.hpp" |
1972 | 37 #include "oops/instanceKlass.hpp" |
38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
1972 | 40 #include "prims/jvm.h" |
41 #include "prims/jvm_misc.hpp" | |
42 #include "prims/jvmtiExport.hpp" | |
43 #include "prims/jvmtiThreadState.hpp" | |
44 #include "prims/nativeLookup.hpp" | |
45 #include "prims/privilegedStack.hpp" | |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/dtraceJSDT.hpp" | |
48 #include "runtime/handles.inline.hpp" | |
49 #include "runtime/init.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/java.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/os.hpp" | |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vm_operations.hpp" | |
59 #include "services/attachListener.hpp" | |
60 #include "services/management.hpp" | |
61 #include "services/threadService.hpp" | |
10405 | 62 #include "trace/tracing.hpp" |
1972 | 63 #include "utilities/copy.hpp" |
64 #include "utilities/defaultStream.hpp" | |
65 #include "utilities/dtrace.hpp" | |
66 #include "utilities/events.hpp" | |
67 #include "utilities/histogram.hpp" | |
68 #include "utilities/top.hpp" | |
69 #include "utilities/utf8.hpp" | |
70 #ifdef TARGET_OS_FAMILY_linux | |
71 # include "jvm_linux.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_solaris | |
74 # include "jvm_solaris.h" | |
75 #endif | |
76 #ifdef TARGET_OS_FAMILY_windows | |
77 # include "jvm_windows.h" | |
78 #endif | |
3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
80 # include "jvm_bsd.h" | |
81 #endif | |
1972 | 82 |
0 | 83 #include <errno.h> |
84 | |
4006 | 85 #ifndef USDT2 |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
4006 | 89 #endif /* !USDT2 */ |
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90 |
0 | 91 /* |
92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
94 usage because if objects are move this may cause various memory stomps, bus | |
95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
96 failures": | |
97 | |
98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
100 | |
101 // Object address to be held directly in mirror & not visible to GC | |
102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
103 | |
104 // If this ctor can hit a safepoint, moving objects around, then | |
105 ComplexConstructor foo; | |
106 | |
107 // Boom! mirror may point to JUNK instead of the intended object | |
108 (some dereference of mirror) | |
109 | |
110 // Here's another call that may block for GC, making mirror stale | |
111 MutexLocker ml(some_lock); | |
112 | |
113 // And here's an initializer that can result in a stale oop | |
114 // all in one step. | |
115 oop o = call_that_can_throw_exception(TRAPS); | |
116 | |
117 | |
118 The solution is to keep the oop declaration BELOW the ctor or function | |
119 call that might cause a GC, do another resolve to reassign the oop, or | |
120 consider use of a Handle instead of an oop so there is immunity from object | |
121 motion. But note that the "QUICK" entries below do not have a handlemark | |
122 and thus can only support use of handles passed in. | |
123 */ | |
124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
0 | 126 ResourceMark rm; |
127 int line_number = -1; | |
128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
0 | 131 JavaThread* jthread = JavaThread::current(); |
132 if (jthread->has_last_Java_frame()) { | |
133 vframeStream vfst(jthread); | |
134 | |
135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
0 | 142 |
143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
0 | 148 break; |
149 } | |
150 last_caller = m; | |
151 vfst.next(); | |
152 } | |
153 // if this is called from Class.forName0 and that is called from Class.forName, | |
154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
156 bool found_it = false; | |
157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
160 vfst.next(); | |
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::forName_name()) { |
164 vfst.next(); | |
165 found_it = true; | |
166 } | |
167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
0 | 169 vmSymbols::java_lang_ClassLoader() && |
170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
171 last_caller->name() == vmSymbols::loadClass_name())) { | |
172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
0 | 178 } |
179 if (found_it && !vfst.at_end()) { | |
180 // found the caller | |
181 caller = vfst.method()->method_holder(); | |
182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
0 | 188 if (s != NULL) { |
189 source_file = s->as_C_string(); | |
190 } | |
191 } | |
192 } | |
193 if (caller != NULL) { | |
194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
0 | 197 // print in a single call to reduce interleaving between threads |
198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 202 } |
203 } | |
204 } | |
205 } | |
206 | |
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207 void trace_class_resolution(Klass* to_class) { |
0 | 208 EXCEPTION_MARK; |
209 trace_class_resolution_impl(to_class, THREAD); | |
210 if (HAS_PENDING_EXCEPTION) { | |
211 CLEAR_PENDING_EXCEPTION; | |
212 } | |
213 } | |
214 | |
215 // Wrapper to trace JVM functions | |
216 | |
217 #ifdef ASSERT | |
218 class JVMTraceWrapper : public StackObj { | |
219 public: | |
220 JVMTraceWrapper(const char* format, ...) { | |
221 if (TraceJVMCalls) { | |
222 va_list ap; | |
223 va_start(ap, format); | |
224 tty->print("JVM "); | |
225 tty->vprint_cr(format, ap); | |
226 va_end(ap); | |
227 } | |
228 } | |
229 }; | |
230 | |
231 Histogram* JVMHistogram; | |
232 volatile jint JVMHistogram_lock = 0; | |
233 | |
234 class JVMHistogramElement : public HistogramElement { | |
235 public: | |
236 JVMHistogramElement(const char* name); | |
237 }; | |
238 | |
239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
240 _name = elementName; | |
241 uintx count = 0; | |
242 | |
243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
245 count +=1; | |
246 if ( (WarnOnStalledSpinLock > 0) | |
247 && (count % WarnOnStalledSpinLock == 0)) { | |
248 warning("JVMHistogram_lock seems to be stalled"); | |
249 } | |
250 } | |
251 } | |
252 | |
253 if(JVMHistogram == NULL) | |
254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
255 | |
256 JVMHistogram->add_element(this); | |
257 Atomic::dec(&JVMHistogram_lock); | |
258 } | |
259 | |
260 #define JVMCountWrapper(arg) \ | |
261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
263 | |
264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
268 #else | |
269 #define JVMWrapper(arg1) | |
270 #define JVMWrapper2(arg1, arg2) | |
271 #define JVMWrapper3(arg1, arg2, arg3) | |
272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
273 #endif | |
274 | |
275 | |
276 // Interface version ///////////////////////////////////////////////////////////////////// | |
277 | |
278 | |
279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
280 return JVM_INTERFACE_VERSION; | |
281 JVM_END | |
282 | |
283 | |
284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
285 | |
286 | |
287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
288 JVMWrapper("JVM_CurrentTimeMillis"); | |
289 return os::javaTimeMillis(); | |
290 JVM_END | |
291 | |
292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
293 JVMWrapper("JVM_NanoTime"); | |
294 return os::javaTimeNanos(); | |
295 JVM_END | |
296 | |
297 | |
298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
299 jobject dst, jint dst_pos, jint length)) | |
300 JVMWrapper("JVM_ArrayCopy"); | |
301 // Check if we have null pointers | |
302 if (src == NULL || dst == NULL) { | |
303 THROW(vmSymbols::java_lang_NullPointerException()); | |
304 } | |
305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
309 // Do copy | |
6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
0 | 311 JVM_END |
312 | |
313 | |
314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
315 JavaValue r(T_OBJECT); | |
316 // public synchronized Object put(Object key, Object value); | |
317 HandleMark hm(THREAD); | |
318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
320 JavaCalls::call_virtual(&r, | |
321 props, | |
1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
0 | 325 key_str, |
326 value_str, | |
327 THREAD); | |
328 } | |
329 | |
330 | |
331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
332 | |
333 | |
334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
335 JVMWrapper("JVM_InitProperties"); | |
336 ResourceMark rm; | |
337 | |
338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
339 | |
340 // System property list includes both user set via -D option and | |
341 // jvm system specific properties. | |
342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
343 PUTPROP(props, p->key(), p->value()); | |
344 } | |
345 | |
346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
347 // to the sun.nio.MaxDirectMemorySize property. | |
348 // Do this after setting user properties to prevent people | |
349 // from setting the value with a -D option, as requested. | |
350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
0 | 358 } |
359 | |
360 // JVM monitoring and management support | |
361 // Add the sun.management.compiler property for the compiler's name | |
362 { | |
363 #undef CSIZE | |
364 #if defined(_LP64) || defined(_WIN64) | |
365 #define CSIZE "64-Bit " | |
366 #else | |
367 #define CSIZE | |
368 #endif // 64bit | |
369 | |
370 #ifdef TIERED | |
371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
372 #else | |
373 #if defined(COMPILER1) | |
374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
375 #elif defined(COMPILER2) | |
376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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378 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
0 | 379 #else |
380 const char* compiler_name = ""; | |
381 #endif // compilers | |
382 #endif // TIERED | |
383 | |
384 if (*compiler_name != '\0' && | |
385 (Arguments::mode() != Arguments::_int)) { | |
386 PUTPROP(props, "sun.management.compiler", compiler_name); | |
387 } | |
388 } | |
389 | |
390 return properties; | |
391 JVM_END | |
392 | |
393 | |
394 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
395 | |
396 extern volatile jint vm_created; | |
397 | |
398 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
399 if (vm_created != 0 && (code == 0)) { | |
400 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
401 Universe::run_finalizers_on_exit(); | |
402 } | |
403 before_exit(thread); | |
404 vm_exit(code); | |
405 JVM_END | |
406 | |
407 | |
408 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
409 before_exit(thread); | |
410 vm_exit(code); | |
411 JVM_END | |
412 | |
413 | |
414 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
415 register_on_exit_function(func); | |
416 JVM_END | |
417 | |
418 | |
419 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
420 JVMWrapper("JVM_GC"); | |
421 if (!DisableExplicitGC) { | |
422 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
423 } | |
424 JVM_END | |
425 | |
426 | |
427 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
428 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
429 return Universe::heap()->millis_since_last_gc(); | |
430 JVM_END | |
431 | |
432 | |
433 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
434 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
435 JVM_END | |
436 | |
437 | |
438 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
439 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
440 JVM_END | |
441 | |
442 static inline jlong convert_size_t_to_jlong(size_t val) { | |
443 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
444 NOT_LP64 (return (jlong)val;) | |
445 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
446 } | |
447 | |
448 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
449 JVMWrapper("JVM_TotalMemory"); | |
450 size_t n = Universe::heap()->capacity(); | |
451 return convert_size_t_to_jlong(n); | |
452 JVM_END | |
453 | |
454 | |
455 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
456 JVMWrapper("JVM_FreeMemory"); | |
457 CollectedHeap* ch = Universe::heap(); | |
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458 size_t n; |
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459 { |
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460 MutexLocker x(Heap_lock); |
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461 n = ch->capacity() - ch->used(); |
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462 } |
0 | 463 return convert_size_t_to_jlong(n); |
464 JVM_END | |
465 | |
466 | |
467 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
468 JVMWrapper("JVM_MaxMemory"); | |
469 size_t n = Universe::heap()->max_capacity(); | |
470 return convert_size_t_to_jlong(n); | |
471 JVM_END | |
472 | |
473 | |
474 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
475 JVMWrapper("JVM_ActiveProcessorCount"); | |
476 return os::active_processor_count(); | |
477 JVM_END | |
478 | |
479 | |
480 | |
481 // java.lang.Throwable ////////////////////////////////////////////////////// | |
482 | |
483 | |
484 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
485 JVMWrapper("JVM_FillInStackTrace"); | |
486 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
487 java_lang_Throwable::fill_in_stack_trace(exception); | |
488 JVM_END | |
489 | |
490 | |
491 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
492 JVMWrapper("JVM_GetStackTraceDepth"); | |
493 oop exception = JNIHandles::resolve(throwable); | |
494 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
495 JVM_END | |
496 | |
497 | |
498 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
499 JVMWrapper("JVM_GetStackTraceElement"); | |
500 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
501 oop exception = JNIHandles::resolve(throwable); | |
502 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
503 return JNIHandles::make_local(env, element); | |
504 JVM_END | |
505 | |
506 | |
507 // java.lang.Object /////////////////////////////////////////////// | |
508 | |
509 | |
510 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
511 JVMWrapper("JVM_IHashCode"); | |
512 // as implemented in the classic virtual machine; return 0 if object is NULL | |
513 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
514 JVM_END | |
515 | |
516 | |
517 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
518 JVMWrapper("JVM_MonitorWait"); | |
519 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
520 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
521 if (JvmtiExport::should_post_monitor_wait()) { | |
522 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
523 } | |
524 ObjectSynchronizer::wait(obj, ms, CHECK); | |
525 JVM_END | |
526 | |
527 | |
528 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
529 JVMWrapper("JVM_MonitorNotify"); | |
530 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
531 ObjectSynchronizer::notify(obj, CHECK); | |
532 JVM_END | |
533 | |
534 | |
535 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
536 JVMWrapper("JVM_MonitorNotifyAll"); | |
537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
538 ObjectSynchronizer::notifyall(obj, CHECK); | |
539 JVM_END | |
540 | |
541 | |
542 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
543 JVMWrapper("JVM_Clone"); | |
544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
545 const KlassHandle klass (THREAD, obj->klass()); | |
546 JvmtiVMObjectAllocEventCollector oam; | |
547 | |
548 #ifdef ASSERT | |
549 // Just checking that the cloneable flag is set correct | |
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550 if (obj->is_array()) { |
0 | 551 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
552 } else { | |
553 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 554 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 555 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
556 } | |
557 #endif | |
558 | |
559 // Check if class of obj supports the Cloneable interface. | |
560 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
561 if (!klass->is_cloneable()) { | |
562 ResourceMark rm(THREAD); | |
563 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
564 } | |
565 | |
566 // Make shallow object copy | |
567 const int size = obj->size(); | |
568 oop new_obj = NULL; | |
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569 if (obj->is_array()) { |
0 | 570 const int length = ((arrayOop)obj())->length(); |
571 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
572 } else { | |
573 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
574 } | |
575 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
576 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
577 // be suspended in the middle of copying the pointer and end up with parts | |
578 // of two different pointers in the field. Subsequent dereferences will crash. | |
579 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
580 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
581 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
582 // The same is true of StubRoutines::object_copy and the various oop_copy | |
583 // variants, and of the code generated by the inline_native_clone intrinsic. | |
584 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
585 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
586 (size_t)align_object_size(size) / HeapWordsPerLong); | |
587 // Clear the header | |
588 new_obj->init_mark(); | |
589 | |
590 // Store check (mark entire object and let gc sort it out) | |
591 BarrierSet* bs = Universe::heap()->barrier_set(); | |
592 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
593 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
594 | |
595 // Caution: this involves a java upcall, so the clone should be | |
596 // "gc-robust" by this stage. | |
597 if (klass->has_finalizer()) { | |
598 assert(obj->is_instance(), "should be instanceOop"); | |
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599 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 600 } |
601 | |
602 return JNIHandles::make_local(env, oop(new_obj)); | |
603 JVM_END | |
604 | |
605 // java.lang.Compiler //////////////////////////////////////////////////// | |
606 | |
607 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
608 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
609 // functions are all silently ignored unless JVM warnings are printed. | |
610 | |
611 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
612 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
613 JVM_END | |
614 | |
615 | |
616 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
617 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
618 return JNI_FALSE; | |
619 JVM_END | |
620 | |
621 | |
622 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
623 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
624 return JNI_FALSE; | |
625 JVM_END | |
626 | |
627 | |
628 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
629 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
630 return JNI_FALSE; | |
631 JVM_END | |
632 | |
633 | |
634 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
635 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
636 return NULL; | |
637 JVM_END | |
638 | |
639 | |
640 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
641 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
642 JVM_END | |
643 | |
644 | |
645 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
646 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
647 JVM_END | |
648 | |
649 | |
650 | |
651 // Error message support ////////////////////////////////////////////////////// | |
652 | |
653 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
654 JVMWrapper("JVM_GetLastErrorString"); | |
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655 return (jint)os::lasterror(buf, len); |
0 | 656 JVM_END |
657 | |
658 | |
659 // java.io.File /////////////////////////////////////////////////////////////// | |
660 | |
661 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
662 JVMWrapper2("JVM_NativePath (%s)", path); | |
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663 return os::native_path(path); |
0 | 664 JVM_END |
665 | |
666 | |
667 // Misc. class handling /////////////////////////////////////////////////////////// | |
668 | |
669 | |
670 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
671 JVMWrapper("JVM_GetCallerClass"); | |
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672 |
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673 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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674 if (!JDK_Version::is_gte_jdk18x_version() || SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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675 Klass* k = thread->security_get_caller_class(depth); |
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676 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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677 } else { |
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678 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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679 assert(depth == -1, "wrong handshake depth"); |
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680 } |
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681 |
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682 // Getting the class of the caller frame. |
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683 // |
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684 // The call stack at this point looks something like this: |
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685 // |
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686 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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687 // [1] [ @CallerSensitive API.method ] |
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688 // [.] [ (skipped intermediate frames) ] |
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689 // [n] [ caller ] |
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690 vframeStream vfst(thread); |
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691 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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692 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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693 Method* m = vfst.method(); |
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694 assert(m != NULL, "sanity"); |
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695 switch (n) { |
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696 case 0: |
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697 // This must only be called from Reflection.getCallerClass |
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698 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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699 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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700 } |
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701 // fall-through |
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702 case 1: |
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703 // Frame 0 and 1 must be caller sensitive. |
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704 if (!m->caller_sensitive()) { |
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705 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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706 } |
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707 break; |
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708 default: |
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709 if (!m->is_ignored_by_security_stack_walk()) { |
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710 // We have reached the desired frame; return the holder class. |
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711 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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712 } |
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713 break; |
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714 } |
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715 } |
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716 return NULL; |
0 | 717 JVM_END |
718 | |
719 | |
720 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
721 JVMWrapper("JVM_FindPrimitiveClass"); | |
722 oop mirror = NULL; | |
723 BasicType t = name2type(utf); | |
724 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
725 mirror = Universe::java_mirror(t); | |
726 } | |
727 if (mirror == NULL) { | |
728 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
729 } else { | |
730 return (jclass) JNIHandles::make_local(env, mirror); | |
731 } | |
732 JVM_END | |
733 | |
734 | |
735 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
736 JVMWrapper("JVM_ResolveClass"); | |
737 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
738 JVM_END | |
739 | |
878
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740 |
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741 // Returns a class loaded by the bootstrap class loader; or null |
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742 // if not found. ClassNotFoundException is not thrown. |
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743 // |
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744 // Rationale behind JVM_FindClassFromBootLoader |
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745 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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746 // b> because of (a) java.dll has a direct dependecy on the unexported |
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747 // private symbol "_JVM_FindClassFromClassLoader@20". |
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748 // c> the launcher cannot use the private symbol as it dynamically opens |
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749 // the entry point, so if something changes, the launcher will fail |
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750 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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751 // stable exported interface. |
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752 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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753 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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754 // JVM_FindClassFromClassLoader and will not be backward compatible |
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755 // with older JDKs. |
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756 // Thus a public/stable exported entry point is the right solution, |
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757 // public here means public in linker semantics, and is exported only |
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758 // to the JDK, and is not intended to be a public API. |
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759 |
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760 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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761 const char* name)) |
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762 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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763 |
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764 // Java libraries should ensure that name is never null... |
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765 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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766 // It's impossible to create this class; the name cannot fit |
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767 // into the constant pool. |
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768 return NULL; |
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769 } |
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770 |
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771 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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772 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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773 if (k == NULL) { |
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774 return NULL; |
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775 } |
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776 |
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777 if (TraceClassResolution) { |
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778 trace_class_resolution(k); |
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779 } |
6983 | 780 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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781 JVM_END |
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782 |
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783 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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784 jboolean init, jobject loader, |
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785 jboolean throwError)) |
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786 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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787 throwError ? "error" : "exception"); |
388 | 788 // Java libraries should ensure that name is never null... |
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789 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 790 // It's impossible to create this class; the name cannot fit |
791 // into the constant pool. | |
792 if (throwError) { | |
793 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
794 } else { | |
795 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
796 } | |
797 } | |
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798 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 799 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
800 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
801 Handle(), throwError, THREAD); | |
802 | |
803 if (TraceClassResolution && result != NULL) { | |
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804 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 805 } |
806 return result; | |
0 | 807 JVM_END |
808 | |
809 | |
810 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
811 jboolean init, jclass from)) | |
812 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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813 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 814 // It's impossible to create this class; the name cannot fit |
815 // into the constant pool. | |
816 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
817 } | |
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818 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 819 oop from_class_oop = JNIHandles::resolve(from); |
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820 Klass* from_class = (from_class_oop == NULL) |
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821 ? (Klass*)NULL |
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822 : java_lang_Class::as_Klass(from_class_oop); |
0 | 823 oop class_loader = NULL; |
824 oop protection_domain = NULL; | |
825 if (from_class != NULL) { | |
6983 | 826 class_loader = from_class->class_loader(); |
827 protection_domain = from_class->protection_domain(); | |
0 | 828 } |
829 Handle h_loader(THREAD, class_loader); | |
830 Handle h_prot (THREAD, protection_domain); | |
831 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
832 h_prot, true, thread); | |
833 | |
834 if (TraceClassResolution && result != NULL) { | |
835 // this function is generally only used for class loading during verification. | |
836 ResourceMark rm; | |
837 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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838 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 839 const char * from_name = from_class->external_name(); |
0 | 840 |
841 oop mirror = JNIHandles::resolve_non_null(result); | |
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842 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 843 const char * to = to_class->external_name(); |
0 | 844 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
845 } | |
846 | |
847 return result; | |
848 JVM_END | |
849 | |
850 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
851 if (loader.is_null()) { | |
852 return; | |
853 } | |
854 | |
855 // check whether the current caller thread holds the lock or not. | |
856 // If not, increment the corresponding counter | |
857 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
858 ObjectSynchronizer::owner_self) { | |
859 counter->inc(); | |
860 } | |
861 } | |
862 | |
863 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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864 // and JVM_DefineClassWithSourceCond() |
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865 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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866 jobject loader, const jbyte *buf, |
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867 jsize len, jobject pd, const char *source, |
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868 jboolean verify, TRAPS) { |
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869 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 870 |
875
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871 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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872 JavaThread* jt = (JavaThread*) THREAD; |
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873 |
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874 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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875 ClassLoader::perf_define_appclass_selftime(), |
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876 ClassLoader::perf_define_appclasses(), |
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877 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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878 jt->get_thread_stat()->perf_timers_addr(), |
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879 PerfClassTraceTime::DEFINE_CLASS); |
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880 |
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881 if (UsePerfData) { |
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882 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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883 } |
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884 |
0 | 885 // Since exceptions can be thrown, class initialization can take place |
886 // if name is NULL no check for class name in .class stream has to be made. | |
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887 TempNewSymbol class_name = NULL; |
0 | 888 if (name != NULL) { |
889 const int str_len = (int)strlen(name); | |
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890 if (str_len > Symbol::max_length()) { |
0 | 891 // It's impossible to create this class; the name cannot fit |
892 // into the constant pool. | |
893 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
894 } | |
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895 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 896 } |
897 | |
898 ResourceMark rm(THREAD); | |
899 ClassFileStream st((u1*) buf, len, (char *)source); | |
900 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
901 if (UsePerfData) { | |
902 is_lock_held_by_thread(class_loader, | |
903 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
904 THREAD); | |
905 } | |
906 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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907 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 908 protection_domain, &st, |
973
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909 verify != 0, |
0 | 910 CHECK_NULL); |
911 | |
912 if (TraceClassResolution && k != NULL) { | |
913 trace_class_resolution(k); | |
914 } | |
915 | |
6983 | 916 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 917 } |
918 | |
919 | |
920 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
921 JVMWrapper2("JVM_DefineClass %s", name); | |
922 | |
973
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923 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 924 JVM_END |
925 | |
926 | |
927 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
928 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
929 | |
973
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930 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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931 JVM_END |
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932 |
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933 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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934 jobject loader, const jbyte *buf, |
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935 jsize len, jobject pd, |
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936 const char *source, jboolean verify)) |
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937 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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938 |
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939 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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940 JVM_END |
0 | 941 |
942 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
943 JVMWrapper("JVM_FindLoadedClass"); | |
944 ResourceMark rm(THREAD); | |
945 | |
946 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
947 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
948 | |
949 const char* str = java_lang_String::as_utf8_string(string()); | |
950 // Sanity check, don't expect null | |
951 if (str == NULL) return NULL; | |
952 | |
953 const int str_len = (int)strlen(str); | |
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954 if (str_len > Symbol::max_length()) { |
0 | 955 // It's impossible to create this class; the name cannot fit |
956 // into the constant pool. | |
957 return NULL; | |
958 } | |
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959 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 960 |
961 // Security Note: | |
962 // The Java level wrapper will perform the necessary security check allowing | |
963 // us to pass the NULL as the initiating class loader. | |
964 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
965 if (UsePerfData) { | |
966 is_lock_held_by_thread(h_loader, | |
967 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
968 THREAD); | |
969 } | |
970 | |
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971 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 972 h_loader, |
973 Handle(), | |
974 CHECK_NULL); | |
975 | |
976 return (k == NULL) ? NULL : | |
6983 | 977 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 978 JVM_END |
979 | |
980 | |
981 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
982 | |
983 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
984 assert (cls != NULL, "illegal class"); | |
985 JVMWrapper("JVM_GetClassName"); | |
986 JvmtiVMObjectAllocEventCollector oam; | |
987 ResourceMark rm(THREAD); | |
988 const char* name; | |
989 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
990 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
991 } else { | |
992 // Consider caching interned string in Klass | |
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993 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 994 assert(k->is_klass(), "just checking"); |
6983 | 995 name = k->external_name(); |
0 | 996 } |
997 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
998 return (jstring) JNIHandles::make_local(env, result); | |
999 JVM_END | |
1000 | |
1001 | |
1002 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1003 JVMWrapper("JVM_GetClassInterfaces"); | |
1004 JvmtiVMObjectAllocEventCollector oam; | |
1005 oop mirror = JNIHandles::resolve_non_null(cls); | |
1006 | |
1007 // Special handling for primitive objects | |
1008 if (java_lang_Class::is_primitive(mirror)) { | |
1009 // Primitive objects does not have any interfaces | |
1142 | 1010 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1011 return (jobjectArray) JNIHandles::make_local(env, r); |
1012 } | |
1013 | |
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1014 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1015 // Figure size of result array |
1016 int size; | |
1017 if (klass->oop_is_instance()) { | |
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1018 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1019 } else { |
1020 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1021 size = 2; | |
1022 } | |
1023 | |
1024 // Allocate result array | |
1142 | 1025 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1026 objArrayHandle result (THREAD, r); |
1027 // Fill in result | |
1028 if (klass->oop_is_instance()) { | |
1029 // Regular instance klass, fill in all local interfaces | |
1030 for (int index = 0; index < size; index++) { | |
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1031 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1032 result->obj_at_put(index, k->java_mirror()); |
0 | 1033 } |
1034 } else { | |
1035 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1036 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1037 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1038 } |
1039 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1040 JVM_END | |
1041 | |
1042 | |
1043 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1044 JVMWrapper("JVM_GetClassLoader"); | |
1045 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1046 return NULL; | |
1047 } | |
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1048 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1049 oop loader = k->class_loader(); |
0 | 1050 return JNIHandles::make_local(env, loader); |
1051 JVM_END | |
1052 | |
1053 | |
1054 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1055 JVMWrapper("JVM_IsInterface"); | |
1056 oop mirror = JNIHandles::resolve_non_null(cls); | |
1057 if (java_lang_Class::is_primitive(mirror)) { | |
1058 return JNI_FALSE; | |
1059 } | |
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1060 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1061 jboolean result = k->is_interface(); |
1062 assert(!result || k->oop_is_instance(), | |
0 | 1063 "all interfaces are instance types"); |
1064 // The compiler intrinsic for isInterface tests the | |
1065 // Klass::_access_flags bits in the same way. | |
1066 return result; | |
1067 JVM_END | |
1068 | |
1069 | |
1070 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1071 JVMWrapper("JVM_GetClassSigners"); | |
1072 JvmtiVMObjectAllocEventCollector oam; | |
1073 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1074 // There are no signers for primitive types | |
1075 return NULL; | |
1076 } | |
1077 | |
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1078 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1079 |
1080 // If there are no signers set in the class, or if the class | |
1081 // is an array, return NULL. | |
1082 if (signers == NULL) return NULL; | |
1083 | |
1084 // copy of the signers array | |
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1085 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1086 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1087 for (int index = 0; index < signers->length(); index++) { | |
1088 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1089 } | |
1090 | |
1091 // return the copy | |
1092 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1093 JVM_END | |
1094 | |
1095 | |
1096 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1097 JVMWrapper("JVM_SetClassSigners"); | |
1098 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1099 // This call is ignored for primitive types and arrays. | |
1100 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1101 // be called with an array. Only the bootstrap loader creates arrays. | |
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1102 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1103 if (k->oop_is_instance()) { |
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1104 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1105 } |
1106 } | |
1107 JVM_END | |
1108 | |
1109 | |
1110 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1111 JVMWrapper("JVM_GetProtectionDomain"); | |
1112 if (JNIHandles::resolve(cls) == NULL) { | |
1113 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1114 } | |
1115 | |
1116 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1117 // Primitive types does not have a protection domain. | |
1118 return NULL; | |
1119 } | |
1120 | |
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1121 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1122 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1123 JVM_END |
1124 | |
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1125 // Preserved in Graal repo so that linking against a JDK7 libjava.so works |
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1126 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) |
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1127 JVMWrapper("JVM_SetProtectionDomain"); |
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1128 |
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1129 ResourceMark rm(THREAD); |
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1130 const char* msg = "Obsolete JVM_SetProtectionDomain function called"; |
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1131 size_t buflen = strlen(msg); |
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1132 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
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1133 jio_snprintf(buf, buflen, msg); |
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1134 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
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1135 JVM_END |
0 | 1136 |
11010 | 1137 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1138 // If there is a security manager and protection domain, check the access | |
1139 // in the protection domain, otherwise it is authorized. | |
1140 if (java_lang_System::has_security_manager()) { | |
1141 | |
1142 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1143 // this context to revert to older behavior. | |
1144 // In this case the isAuthorized field in AccessControlContext is also not | |
1145 // present. | |
1146 if (Universe::protection_domain_implies_method() == NULL) { | |
1147 return true; | |
1148 } | |
1149 | |
1150 // Whitelist certain access control contexts | |
1151 if (java_security_AccessControlContext::is_authorized(context)) { | |
1152 return true; | |
1153 } | |
1154 | |
1155 oop prot = klass->protection_domain(); | |
1156 if (prot != NULL) { | |
1157 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1158 // in the new wrapper. | |
1159 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1160 Handle h_prot(THREAD, prot); | |
1161 JavaValue result(T_BOOLEAN); | |
1162 JavaCallArguments args(h_prot); | |
1163 JavaCalls::call(&result, m, &args, CHECK_false); | |
1164 return (result.get_jboolean() != 0); | |
1165 } | |
1166 } | |
1167 return true; | |
1168 } | |
1169 | |
1170 // Create an AccessControlContext with a protection domain with null codesource | |
1171 // and null permissions - which gives no permissions. | |
1172 oop create_dummy_access_control_context(TRAPS) { | |
1173 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1174 // new ProtectionDomain(null,null); | |
1175 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1176 Handle null_pd(THREAD, null_protection_domain); | |
1177 | |
1178 // new ProtectionDomain[] {pd}; | |
1179 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1180 context->obj_at_put(0, null_pd()); | |
1181 | |
1182 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1183 objArrayHandle h_context(THREAD, context); | |
1184 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1185 return result; | |
1186 } | |
0 | 1187 |
1188 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1189 JVMWrapper("JVM_DoPrivileged"); | |
1190 | |
1191 if (action == NULL) { | |
1192 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1193 } | |
1194 | |
11010 | 1195 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1196 vframeStream vfst(thread); | |
1197 vfst.security_get_caller_frame(1); | |
1198 | |
1199 if (vfst.at_end()) { | |
1200 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1201 } | |
1202 | |
1203 Method* method = vfst.method(); | |
1204 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1205 | |
1206 // Check that action object understands "Object run()" | |
1207 Handle h_context; | |
1208 if (context != NULL) { | |
1209 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1210 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1211 if (!authorized) { | |
1212 // Create an unprivileged access control object and call it's run function | |
1213 // instead. | |
1214 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1215 h_context = Handle(THREAD, noprivs); | |
1216 } | |
1217 } | |
0 | 1218 |
1219 // Check that action object understands "Object run()" | |
1220 Handle object (THREAD, JNIHandles::resolve(action)); | |
1221 | |
1222 // get run() method | |
6983 | 1223 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1224 vmSymbols::run_method_name(), |
1225 vmSymbols::void_object_signature()); | |
1226 methodHandle m (THREAD, m_oop); | |
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1227 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1228 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1229 } | |
1230 | |
11010 | 1231 // Stack allocated list of privileged stack elements |
1232 PrivilegedElement pi; | |
0 | 1233 if (!vfst.at_end()) { |
11010 | 1234 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1235 thread->set_privileged_stack_top(&pi); |
1236 } | |
1237 | |
1238 | |
1239 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1240 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1241 Handle pending_exception; | |
1242 JavaValue result(T_OBJECT); | |
1243 JavaCallArguments args(object); | |
1244 JavaCalls::call(&result, m, &args, THREAD); | |
1245 | |
1246 // done with action, remove ourselves from the list | |
1247 if (!vfst.at_end()) { | |
1248 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1249 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1250 } | |
1251 | |
1252 if (HAS_PENDING_EXCEPTION) { | |
1253 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1254 CLEAR_PENDING_EXCEPTION; | |
1255 | |
1142 | 1256 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1257 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1258 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1259 JavaCallArguments args(pending_exception); | |
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1260 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1261 vmSymbols::exception_void_signature(), |
0 | 1262 &args); |
1263 } | |
1264 } | |
1265 | |
1266 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1267 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1268 JVM_END | |
1269 | |
1270 | |
1271 // Returns the inherited_access_control_context field of the running thread. | |
1272 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1273 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1274 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1275 return JNIHandles::make_local(env, result); | |
1276 JVM_END | |
1277 | |
1278 class RegisterArrayForGC { | |
1279 private: | |
1280 JavaThread *_thread; | |
1281 public: | |
1282 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1283 _thread = thread; | |
1284 _thread->register_array_for_gc(array); | |
1285 } | |
1286 | |
1287 ~RegisterArrayForGC() { | |
1288 _thread->register_array_for_gc(NULL); | |
1289 } | |
1290 }; | |
1291 | |
1292 | |
1293 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1294 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1295 if (!UsePrivilegedStack) return NULL; | |
1296 | |
1297 ResourceMark rm(THREAD); | |
1298 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1299 JvmtiVMObjectAllocEventCollector oam; | |
1300 | |
1301 // count the protection domains on the execution stack. We collapse | |
1302 // duplicate consecutive protection domains into a single one, as | |
1303 // well as stopping when we hit a privileged frame. | |
1304 | |
1305 // Use vframeStream to iterate through Java frames | |
1306 vframeStream vfst(thread); | |
1307 | |
1308 oop previous_protection_domain = NULL; | |
1309 Handle privileged_context(thread, NULL); | |
1310 bool is_privileged = false; | |
1311 oop protection_domain = NULL; | |
1312 | |
1313 for(; !vfst.at_end(); vfst.next()) { | |
1314 // get method of frame | |
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1315 Method* method = vfst.method(); |
0 | 1316 intptr_t* frame_id = vfst.frame_id(); |
1317 | |
1318 // check the privileged frames to see if we have a match | |
1319 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1320 // this frame is privileged | |
1321 is_privileged = true; | |
1322 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1323 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1324 } else { | |
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1325 protection_domain = method->method_holder()->protection_domain(); |
0 | 1326 } |
1327 | |
1328 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1329 local_array->push(protection_domain); | |
1330 previous_protection_domain = protection_domain; | |
1331 } | |
1332 | |
1333 if (is_privileged) break; | |
1334 } | |
1335 | |
1336 | |
1337 // either all the domains on the stack were system domains, or | |
1338 // we had a privileged system domain | |
1339 if (local_array->is_empty()) { | |
1340 if (is_privileged && privileged_context.is_null()) return NULL; | |
1341 | |
1342 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1343 return JNIHandles::make_local(env, result); | |
1344 } | |
1345 | |
1346 // the resource area must be registered in case of a gc | |
1347 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1348 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1349 local_array->length(), CHECK_NULL); |
1350 objArrayHandle h_context(thread, context); | |
1351 for (int index = 0; index < local_array->length(); index++) { | |
1352 h_context->obj_at_put(index, local_array->at(index)); | |
1353 } | |
1354 | |
1355 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1356 | |
1357 return JNIHandles::make_local(env, result); | |
1358 JVM_END | |
1359 | |
1360 | |
1361 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1362 JVMWrapper("JVM_IsArrayClass"); | |
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1363 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1364 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1365 JVM_END |
1366 | |
1367 | |
1368 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1369 JVMWrapper("JVM_IsPrimitiveClass"); | |
1370 oop mirror = JNIHandles::resolve_non_null(cls); | |
1371 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1372 JVM_END | |
1373 | |
1374 | |
1375 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1376 JVMWrapper("JVM_GetComponentType"); | |
1377 oop mirror = JNIHandles::resolve_non_null(cls); | |
1378 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1379 return (jclass) JNIHandles::make_local(env, result); | |
1380 JVM_END | |
1381 | |
1382 | |
1383 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1384 JVMWrapper("JVM_GetClassModifiers"); | |
1385 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1386 // Primitive type | |
1387 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1388 } | |
1389 | |
6983 | 1390 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1391 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1392 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1393 return k->modifier_flags(); | |
1394 JVM_END | |
1395 | |
1396 | |
1397 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1398 | |
1399 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1400 JvmtiVMObjectAllocEventCollector oam; | |
1401 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1402 // of an InstanceKlass |
0 | 1403 |
1404 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1405 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1406 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1407 return (jobjectArray)JNIHandles::make_local(env, result); |
1408 } | |
1409 | |
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1410 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1411 InnerClassesIterator iter(k); |
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1412 |
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1413 if (iter.length() == 0) { |
0 | 1414 // Neither an inner nor outer class |
1142 | 1415 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1416 return (jobjectArray)JNIHandles::make_local(env, result); |
1417 } | |
1418 | |
1419 // find inner class info | |
1420 constantPoolHandle cp(thread, k->constants()); | |
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1421 int length = iter.length(); |
0 | 1422 |
1423 // Allocate temp. result array | |
1142 | 1424 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1425 objArrayHandle result (THREAD, r); |
1426 int members = 0; | |
1427 | |
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1428 for (; !iter.done(); iter.next()) { |
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1429 int ioff = iter.inner_class_info_index(); |
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1430 int ooff = iter.outer_class_info_index(); |
0 | 1431 |
1432 if (ioff != 0 && ooff != 0) { | |
1433 // Check to see if the name matches the class we're looking for | |
1434 // before attempting to find the class. | |
1435 if (cp->klass_name_at_matches(k, ooff)) { | |
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1436 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1437 if (outer_klass == k()) { |
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1438 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1439 instanceKlassHandle inner_klass (THREAD, ik); |
1440 | |
1441 // Throws an exception if outer klass has not declared k as | |
1442 // an inner klass | |
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1443 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1444 |
1445 result->obj_at_put(members, inner_klass->java_mirror()); | |
1446 members++; | |
1447 } | |
1448 } | |
1449 } | |
1450 } | |
1451 | |
1452 if (members != length) { | |
1453 // Return array of right length | |
1142 | 1454 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1455 for(int i = 0; i < members; i++) { |
1456 res->obj_at_put(i, result->obj_at(i)); | |
1457 } | |
1458 return (jobjectArray)JNIHandles::make_local(env, res); | |
1459 } | |
1460 | |
1461 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1462 JVM_END | |
1463 | |
1464 | |
1465 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1466 { |
0 | 1467 // ofClass is a reference to a java_lang_Class object. |
1468 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1469 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1470 return NULL; |
1471 } | |
1472 | |
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1473 bool inner_is_member = false; |
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1474 Klass* outer_klass |
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1475 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1476 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1477 if (outer_klass == NULL) return NULL; // already a top-level class |
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1478 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1479 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1480 } |
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1481 JVM_END |
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1482 |
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1483 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1484 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1485 bool* inner_is_member, |
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1486 TRAPS) { |
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1487 Thread* thread = THREAD; |
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1488 InnerClassesIterator iter(k); |
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1489 if (iter.length() == 0) { |
0 | 1490 // No inner class info => no declaring class |
1491 return NULL; | |
1492 } | |
1493 | |
1494 constantPoolHandle i_cp(thread, k->constants()); | |
1495 | |
1496 bool found = false; | |
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1497 Klass* ok; |
0 | 1498 instanceKlassHandle outer_klass; |
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1499 *inner_is_member = false; |
0 | 1500 |
1501 // Find inner_klass attribute | |
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1502 for (; !iter.done() && !found; iter.next()) { |
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1503 int ioff = iter.inner_class_info_index(); |
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1504 int ooff = iter.outer_class_info_index(); |
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1505 int noff = iter.inner_name_index(); |
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1506 if (ioff != 0) { |
0 | 1507 // Check to see if the name matches the class we're looking for |
1508 // before attempting to find the class. | |
1509 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1510 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1511 found = (k() == inner_klass); |
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1512 if (found && ooff != 0) { |
0 | 1513 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1514 outer_klass = instanceKlassHandle(thread, ok); | |
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1515 *inner_is_member = true; |
0 | 1516 } |
1517 } | |
1518 } | |
1519 } | |
1520 | |
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1521 if (found && outer_klass.is_null()) { |
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1522 // It may be anonymous; try for that. |
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1523 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1524 if (encl_method_class_idx != 0) { |
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1525 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1526 outer_klass = instanceKlassHandle(thread, ok); |
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1527 *inner_is_member = false; |
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1528 } |
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1529 } |
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1530 |
0 | 1531 // If no inner class attribute found for this class. |
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1532 if (outer_klass.is_null()) return NULL; |
0 | 1533 |
1534 // Throws an exception if outer klass has not declared k as an inner klass | |
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1535 // We need evidence that each klass knows about the other, or else |
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1536 // the system could allow a spoof of an inner class to gain access rights. |
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1537 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1538 return outer_klass(); |
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1539 } |
0 | 1540 |
1541 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1542 assert (cls != NULL, "illegal class"); | |
1543 JVMWrapper("JVM_GetClassSignature"); | |
1544 JvmtiVMObjectAllocEventCollector oam; | |
1545 ResourceMark rm(THREAD); | |
1546 // Return null for arrays and primatives | |
1547 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1548 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1549 if (k->oop_is_instance()) { |
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1550 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1551 if (sym == NULL) return NULL; |
0 | 1552 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1553 return (jstring) JNIHandles::make_local(env, str()); | |
1554 } | |
1555 } | |
1556 return NULL; | |
1557 JVM_END | |
1558 | |
1559 | |
1560 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1561 assert (cls != NULL, "illegal class"); | |
1562 JVMWrapper("JVM_GetClassAnnotations"); | |
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1563 |
0 | 1564 // Return null for arrays and primitives |
1565 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1566 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1567 if (k->oop_is_instance()) { |
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1568 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1569 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1570 } |
1571 } | |
1572 return NULL; | |
1573 JVM_END | |
1574 | |
1575 | |
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1576 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1577 // some of this code was adapted from from jni_FromReflectedField |
1578 | |
1579 oop reflected = JNIHandles::resolve_non_null(field); | |
1580 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1581 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1582 int slot = java_lang_reflect_Field::slot(reflected); |
1583 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1584 | |
1585 KlassHandle kh(THREAD, k); | |
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1586 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1587 |
1588 if (modifiers & JVM_ACC_STATIC) { | |
1589 // for static fields we only look in the current class | |
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1590 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1591 assert(false, "cannot find static field"); |
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1592 return false; |
0 | 1593 } |
1594 } else { | |
1595 // for instance fields we start with the current class and work | |
1596 // our way up through the superclass chain | |
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1597 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1598 assert(false, "cannot find instance field"); |
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1599 return false; |
0 | 1600 } |
1601 } | |
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1602 return true; |
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|
1603 } |
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1604 |
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1605 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1606 // field is a handle to a java.lang.reflect.Field object |
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1607 assert(field != NULL, "illegal field"); |
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1608 JVMWrapper("JVM_GetFieldAnnotations"); |
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|
1609 |
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|
1610 fieldDescriptor fd; |
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1611 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1612 if (!gotFd) { |
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1613 return NULL; |
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|
1614 } |
0 | 1615 |
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1616 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1617 JVM_END |
1618 | |
1619 | |
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1620 static Method* jvm_get_method_common(jobject method) { |
0 | 1621 // some of this code was adapted from from jni_FromReflectedMethod |
1622 | |
1623 oop reflected = JNIHandles::resolve_non_null(method); | |
1624 oop mirror = NULL; | |
1625 int slot = 0; | |
1626 | |
1142 | 1627 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1628 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1629 slot = java_lang_reflect_Constructor::slot(reflected); | |
1630 } else { | |
1142 | 1631 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1632 "wrong type"); |
1633 mirror = java_lang_reflect_Method::clazz(reflected); | |
1634 slot = java_lang_reflect_Method::slot(reflected); | |
1635 } | |
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1636 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1637 |
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1638 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1639 assert(m != NULL, "cannot find method"); |
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1640 return m; // caller has to deal with NULL in product mode |
0 | 1641 } |
1642 | |
1643 | |
1644 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1645 JVMWrapper("JVM_GetMethodAnnotations"); | |
1646 | |
1647 // method is a handle to a java.lang.reflect.Method object | |
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1648 Method* m = jvm_get_method_common(method); |
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1649 if (m == NULL) { |
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|
1650 return NULL; |
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|
1651 } |
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1652 |
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1653 return (jbyteArray) JNIHandles::make_local(env, |
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1654 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1655 JVM_END |
1656 | |
1657 | |
1658 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1659 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
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->annotation_default(), THREAD)); |
0 | 1669 JVM_END |
1670 | |
1671 | |
1672 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1673 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
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->parameter_annotations(), THREAD)); |
0 | 1683 JVM_END |
1684 | |
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1685 /* Type use annotations support (JDK 1.8) */ |
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1686 |
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1687 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1688 assert (cls != NULL, "illegal class"); |
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|
1689 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1690 ResourceMark rm(THREAD); |
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|
1691 // Return null for arrays and primitives |
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1692 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1693 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1694 if (k->oop_is_instance()) { |
8031 | 1695 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
7611
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1696 if (type_annotations != NULL) { |
8031 | 1697 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
7611
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1698 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1699 } |
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|
1700 } |
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|
1701 } |
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|
1702 return NULL; |
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|
1703 JVM_END |
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1704 |
8818
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1705 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1706 assert (method != NULL, "illegal method"); |
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|
1707 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1708 |
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|
1709 // method is a handle to a java.lang.reflect.Method object |
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|
1710 Method* m = jvm_get_method_common(method); |
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1711 if (m == NULL) { |
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|
1712 return NULL; |
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|
1713 } |
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|
1714 |
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|
1715 AnnotationArray* type_annotations = m->type_annotations(); |
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|
1716 if (type_annotations != NULL) { |
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|
1717 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1718 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1719 } |
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|
1720 |
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|
1721 return NULL; |
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|
1722 JVM_END |
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|
1723 |
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|
1724 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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|
1725 assert (field != NULL, "illegal field"); |
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|
1726 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1727 |
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|
1728 fieldDescriptor fd; |
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|
1729 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1730 if (!gotFd) { |
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|
1731 return NULL; |
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|
1732 } |
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|
1733 |
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|
1734 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1735 JVM_END |
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|
1736 |
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1737 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1738 if (!cp->is_within_bounds(index)) { |
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1739 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1740 } |
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|
1741 } |
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|
1742 |
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1743 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1744 { |
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|
1745 JVMWrapper("JVM_GetMethodParameters"); |
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|
1746 // method is a handle to a java.lang.reflect.Method object |
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|
1747 Method* method_ptr = jvm_get_method_common(method); |
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|
1748 methodHandle mh (THREAD, method_ptr); |
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|
1749 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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|
1750 const int num_params = mh->method_parameters_length(); |
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1751 |
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|
1752 if (0 != num_params) { |
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1753 // make sure all the symbols are properly formatted |
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1754 for (int i = 0; i < num_params; i++) { |
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1755 MethodParametersElement* params = mh->method_parameters_start(); |
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1756 int index = params[i].name_cp_index; |
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1757 bounds_check(mh->constants(), index, CHECK_NULL); |
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1758 |
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1759 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1760 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1761 "Wrong type at constant pool index"); |
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1762 } |
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1763 |
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1764 } |
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1765 |
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1766 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1767 objArrayHandle result (THREAD, result_oop); |
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1768 |
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1769 for (int i = 0; i < num_params; i++) { |
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1770 MethodParametersElement* params = mh->method_parameters_start(); |
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1771 // For a 0 index, give a NULL symbol |
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1772 Symbol* sym = 0 != params[i].name_cp_index ? |
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1773 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1774 int flags = params[i].flags; |
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1775 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1776 flags, CHECK_NULL); |
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1777 result->obj_at_put(i, param); |
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1778 } |
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1779 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1780 } else { |
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1781 return (jobjectArray)NULL; |
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1782 } |
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1783 } |
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1784 JVM_END |
0 | 1785 |
1786 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1787 | |
1788 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1789 { | |
1790 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1791 JvmtiVMObjectAllocEventCollector oam; | |
1792 | |
1793 // Exclude primitive types and array types | |
1794 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1795 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1796 // Return empty array |
1142 | 1797 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1798 return (jobjectArray) JNIHandles::make_local(env, res); |
1799 } | |
1800 | |
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1801 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1802 constantPoolHandle cp(THREAD, k->constants()); |
1803 | |
1804 // Ensure class is linked | |
1805 k->link_class(CHECK_NULL); | |
1806 | |
1807 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1808 bool skip_backtrace = false; | |
1809 | |
1810 // Allocate result | |
1811 int num_fields; | |
1812 | |
1813 if (publicOnly) { | |
1814 num_fields = 0; | |
3938 | 1815 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1816 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1817 } |
1818 } else { | |
3938 | 1819 num_fields = k->java_fields_count(); |
0 | 1820 |
1142 | 1821 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1822 num_fields--; |
1823 skip_backtrace = true; | |
1824 } | |
1825 } | |
1826 | |
1142 | 1827 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1828 objArrayHandle result (THREAD, r); |
1829 | |
1830 int out_idx = 0; | |
1831 fieldDescriptor fd; | |
3938 | 1832 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1833 if (skip_backtrace) { |
1834 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1835 int offset = fs.offset(); |
0 | 1836 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1837 } | |
1838 | |
3938 | 1839 if (!publicOnly || fs.access_flags().is_public()) { |
1840 fd.initialize(k(), fs.index()); | |
0 | 1841 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1842 result->obj_at_put(out_idx, field); | |
1843 ++out_idx; | |
1844 } | |
1845 } | |
1846 assert(out_idx == num_fields, "just checking"); | |
1847 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1848 } | |
1849 JVM_END | |
1850 | |
1851 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1852 { | |
1853 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1854 JvmtiVMObjectAllocEventCollector oam; | |
1855 | |
1856 // Exclude primitive types and array types | |
1857 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1858 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1859 // Return empty array |
1142 | 1860 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1861 return (jobjectArray) JNIHandles::make_local(env, res); |
1862 } | |
1863 | |
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1864 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1865 |
1866 // Ensure class is linked | |
1867 k->link_class(CHECK_NULL); | |
1868 | |
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1869 Array<Method*>* methods = k->methods(); |
0 | 1870 int methods_length = methods->length(); |
1871 int num_methods = 0; | |
1872 | |
1873 int i; | |
1874 for (i = 0; i < methods_length; i++) { | |
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1875 methodHandle method(THREAD, methods->at(i)); |
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1876 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1877 if (!publicOnly || method->is_public()) { |
1878 ++num_methods; | |
1879 } | |
1880 } | |
1881 } | |
1882 | |
1883 // Allocate result | |
1142 | 1884 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1885 objArrayHandle result (THREAD, r); |
1886 | |
1887 int out_idx = 0; | |
1888 for (i = 0; i < methods_length; i++) { | |
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1889 methodHandle method(THREAD, methods->at(i)); |
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1890 if (!method->is_initializer() && !method->is_overpass()) { |
0 | 1891 if (!publicOnly || method->is_public()) { |
1892 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1893 result->obj_at_put(out_idx, m); | |
1894 ++out_idx; | |
1895 } | |
1896 } | |
1897 } | |
1898 assert(out_idx == num_methods, "just checking"); | |
1899 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1900 } | |
1901 JVM_END | |
1902 | |
1903 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1904 { | |
1905 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1906 JvmtiVMObjectAllocEventCollector oam; | |
1907 | |
1908 // Exclude primitive types and array types | |
1909 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1910 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1911 // Return empty array |
1142 | 1912 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1913 return (jobjectArray) JNIHandles::make_local(env, res); |
1914 } | |
1915 | |
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1916 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1917 |
1918 // Ensure class is linked | |
1919 k->link_class(CHECK_NULL); | |
1920 | |
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1921 Array<Method*>* methods = k->methods(); |
0 | 1922 int methods_length = methods->length(); |
1923 int num_constructors = 0; | |
1924 | |
1925 int i; | |
1926 for (i = 0; i < methods_length; i++) { | |
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1927 methodHandle method(THREAD, methods->at(i)); |
0 | 1928 if (method->is_initializer() && !method->is_static()) { |
1929 if (!publicOnly || method->is_public()) { | |
1930 ++num_constructors; | |
1931 } | |
1932 } | |
1933 } | |
1934 | |
1935 // Allocate result | |
1142 | 1936 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1937 objArrayHandle result(THREAD, r); |
1938 | |
1939 int out_idx = 0; | |
1940 for (i = 0; i < methods_length; i++) { | |
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1941 methodHandle method(THREAD, methods->at(i)); |
0 | 1942 if (method->is_initializer() && !method->is_static()) { |
1943 if (!publicOnly || method->is_public()) { | |
1944 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1945 result->obj_at_put(out_idx, m); | |
1946 ++out_idx; | |
1947 } | |
1948 } | |
1949 } | |
1950 assert(out_idx == num_constructors, "just checking"); | |
1951 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1952 } | |
1953 JVM_END | |
1954 | |
1955 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1956 { | |
1957 JVMWrapper("JVM_GetClassAccessFlags"); | |
1958 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1959 // Primitive type | |
1960 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1961 } | |
1962 | |
6983 | 1963 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1964 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1965 } | |
1966 JVM_END | |
1967 | |
1968 | |
1969 // Constant pool access ////////////////////////////////////////////////////////// | |
1970 | |
1971 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1972 { | |
1973 JVMWrapper("JVM_GetClassConstantPool"); | |
1974 JvmtiVMObjectAllocEventCollector oam; | |
1975 | |
1976 // Return null for primitives and arrays | |
1977 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1978 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1979 if (k->oop_is_instance()) { |
0 | 1980 instanceKlassHandle k_h(THREAD, k); |
1981 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1982 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1983 return JNIHandles::make_local(jcp()); |
1984 } | |
1985 } | |
1986 return NULL; | |
1987 } | |
1988 JVM_END | |
1989 | |
1990 | |
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1991 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1992 { |
1993 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1994 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1995 return cp->length(); |
1996 } | |
1997 JVM_END | |
1998 | |
1999 | |
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2000 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2001 { |
2002 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2003 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2004 bounds_check(cp, index, CHECK_NULL); |
2005 constantTag tag = cp->tag_at(index); | |
2006 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2007 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2008 } | |
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2009 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2010 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2011 } |
2012 JVM_END | |
2013 | |
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2014 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2015 { |
2016 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2017 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2018 bounds_check(cp, index, CHECK_NULL); |
2019 constantTag tag = cp->tag_at(index); | |
2020 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2021 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2022 } | |
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2023 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2024 if (k == NULL) return NULL; |
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2025 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2026 } |
2027 JVM_END | |
2028 | |
2029 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2030 constantTag tag = cp->tag_at(index); | |
2031 if (!tag.is_method() && !tag.is_interface_method()) { | |
2032 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2033 } | |
2034 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2035 Klass* k_o; |
0 | 2036 if (force_resolution) { |
2037 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2038 } else { | |
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2039 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2040 if (k_o == NULL) return NULL; |
2041 } | |
2042 instanceKlassHandle k(THREAD, k_o); | |
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2043 Symbol* name = cp->uncached_name_ref_at(index); |
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2044 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2045 methodHandle m (THREAD, k->find_method(name, sig)); |
2046 if (m.is_null()) { | |
2047 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2048 } | |
2049 oop method; | |
2050 if (!m->is_initializer() || m->is_static()) { | |
2051 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2052 } else { | |
2053 method = Reflection::new_constructor(m, CHECK_NULL); | |
2054 } | |
2055 return JNIHandles::make_local(method); | |
2056 } | |
2057 | |
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2058 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2059 { |
2060 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2061 JvmtiVMObjectAllocEventCollector oam; | |
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2062 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2063 bounds_check(cp, index, CHECK_NULL); |
2064 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2065 return res; | |
2066 } | |
2067 JVM_END | |
2068 | |
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2069 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2070 { |
2071 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2072 JvmtiVMObjectAllocEventCollector oam; | |
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2073 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2074 bounds_check(cp, index, CHECK_NULL); |
2075 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2076 return res; | |
2077 } | |
2078 JVM_END | |
2079 | |
2080 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2081 constantTag tag = cp->tag_at(index); | |
2082 if (!tag.is_field()) { | |
2083 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2084 } | |
2085 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2086 Klass* k_o; |
0 | 2087 if (force_resolution) { |
2088 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2089 } else { | |
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2090 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2091 if (k_o == NULL) return NULL; |
2092 } | |
2093 instanceKlassHandle k(THREAD, k_o); | |
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2094 Symbol* name = cp->uncached_name_ref_at(index); |
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2095 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2096 fieldDescriptor fd; |
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2097 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2098 if (target_klass == NULL) { |
2099 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2100 } | |
2101 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2102 return JNIHandles::make_local(field); | |
2103 } | |
2104 | |
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2105 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2106 { |
2107 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2108 JvmtiVMObjectAllocEventCollector oam; | |
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2109 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2110 bounds_check(cp, index, CHECK_NULL); |
2111 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2112 return res; | |
2113 } | |
2114 JVM_END | |
2115 | |
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2116 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2117 { |
2118 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2119 JvmtiVMObjectAllocEventCollector oam; | |
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2120 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2121 bounds_check(cp, index, CHECK_NULL); |
2122 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2123 return res; | |
2124 } | |
2125 JVM_END | |
2126 | |
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2127 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2128 { |
2129 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2130 JvmtiVMObjectAllocEventCollector oam; | |
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2131 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2132 bounds_check(cp, index, CHECK_NULL); |
2133 constantTag tag = cp->tag_at(index); | |
2134 if (!tag.is_field_or_method()) { | |
2135 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2136 } | |
2137 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2138 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2139 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2140 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2141 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2142 objArrayHandle dest(THREAD, dest_o); |
2143 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2144 dest->obj_at_put(0, str()); | |
2145 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2146 dest->obj_at_put(1, str()); | |
2147 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2148 dest->obj_at_put(2, str()); | |
2149 return (jobjectArray) JNIHandles::make_local(dest()); | |
2150 } | |
2151 JVM_END | |
2152 | |
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2153 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2154 { |
2155 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2156 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2157 bounds_check(cp, index, CHECK_0); |
2158 constantTag tag = cp->tag_at(index); | |
2159 if (!tag.is_int()) { | |
2160 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2161 } | |
2162 return cp->int_at(index); | |
2163 } | |
2164 JVM_END | |
2165 | |
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2166 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2167 { |
2168 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2169 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2170 bounds_check(cp, index, CHECK_(0L)); |
2171 constantTag tag = cp->tag_at(index); | |
2172 if (!tag.is_long()) { | |
2173 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2174 } | |
2175 return cp->long_at(index); | |
2176 } | |
2177 JVM_END | |
2178 | |
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2179 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2180 { |
2181 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2182 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2183 bounds_check(cp, index, CHECK_(0.0f)); |
2184 constantTag tag = cp->tag_at(index); | |
2185 if (!tag.is_float()) { | |
2186 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2187 } | |
2188 return cp->float_at(index); | |
2189 } | |
2190 JVM_END | |
2191 | |
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2192 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2193 { |
2194 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2195 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2196 bounds_check(cp, index, CHECK_(0.0)); |
2197 constantTag tag = cp->tag_at(index); | |
2198 if (!tag.is_double()) { | |
2199 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2200 } | |
2201 return cp->double_at(index); | |
2202 } | |
2203 JVM_END | |
2204 | |
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2205 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2206 { |
2207 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2208 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2209 bounds_check(cp, index, CHECK_NULL); |
2210 constantTag tag = cp->tag_at(index); | |
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2211 if (!tag.is_string()) { |
0 | 2212 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2213 } | |
2214 oop str = cp->string_at(index, CHECK_NULL); | |
2215 return (jstring) JNIHandles::make_local(str); | |
2216 } | |
2217 JVM_END | |
2218 | |
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2219 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2220 { |
2221 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2222 JvmtiVMObjectAllocEventCollector oam; | |
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2223 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2224 bounds_check(cp, index, CHECK_NULL); |
2225 constantTag tag = cp->tag_at(index); | |
2226 if (!tag.is_symbol()) { | |
2227 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2228 } | |
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2229 Symbol* sym = cp->symbol_at(index); |
0 | 2230 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2231 return (jstring) JNIHandles::make_local(str()); | |
2232 } | |
2233 JVM_END | |
2234 | |
2235 | |
2236 // Assertion support. ////////////////////////////////////////////////////////// | |
2237 | |
2238 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2239 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2240 assert(cls != NULL, "bad class"); | |
2241 | |
2242 oop r = JNIHandles::resolve(cls); | |
2243 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2244 if (java_lang_Class::is_primitive(r)) return false; | |
2245 | |
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2246 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2247 assert(k->oop_is_instance(), "must be an instance klass"); |
2248 if (! k->oop_is_instance()) return false; | |
0 | 2249 |
2250 ResourceMark rm(THREAD); | |
6983 | 2251 const char* name = k->name()->as_C_string(); |
2252 bool system_class = k->class_loader() == NULL; | |
0 | 2253 return JavaAssertions::enabled(name, system_class); |
2254 | |
2255 JVM_END | |
2256 | |
2257 | |
2258 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2259 // command-line assertion arguments (i.e., -ea, -da). | |
2260 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2261 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2262 JvmtiVMObjectAllocEventCollector oam; | |
2263 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2264 return JNIHandles::make_local(env, asd); | |
2265 JVM_END | |
2266 | |
2267 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2268 | |
2269 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2270 | |
2271 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2272 // All functions from this section should call the jvmtiThreadSate function: | |
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2273 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2274 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2275 // was invoked in the middle of the class redefinition. |
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2276 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2277 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2278 | |
2279 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2280 JVMWrapper("JVM_GetClassNameUTF"); | |
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2281 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2282 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2283 return k->name()->as_utf8(); |
0 | 2284 JVM_END |
2285 | |
2286 | |
2287 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2288 JVMWrapper("JVM_GetClassCPTypes"); | |
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2289 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2290 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2291 // types will have length zero if this is not an InstanceKlass |
0 | 2292 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2293 if (k->oop_is_instance()) { |
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2294 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2295 for (int index = cp->length() - 1; index >= 0; index--) { |
2296 constantTag tag = cp->tag_at(index); | |
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2297 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2298 } |
2299 } | |
2300 JVM_END | |
2301 | |
2302 | |
2303 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2304 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2305 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2306 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2307 if (!k->oop_is_instance()) |
0 | 2308 return 0; |
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2309 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2310 JVM_END |
2311 | |
2312 | |
2313 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2314 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2315 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2316 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2317 if (!k->oop_is_instance()) |
0 | 2318 return 0; |
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2319 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2320 JVM_END |
2321 | |
2322 | |
2323 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2324 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2325 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2326 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2327 if (!k->oop_is_instance()) |
0 | 2328 return 0; |
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2329 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2330 JVM_END |
2331 | |
2332 | |
2333 // The following methods, used for the verifier, are never called with | |
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2334 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2335 // Typically, these methods are called in a loop with bounds determined |
2336 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2337 // zero for arrays. | |
2338 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2339 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2340 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2341 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2342 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2343 int length = method->checked_exceptions_length(); |
0 | 2344 if (length > 0) { |
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2345 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2346 for (int i = 0; i < length; i++) { |
2347 exceptions[i] = table[i].class_cp_index; | |
2348 } | |
2349 } | |
2350 JVM_END | |
2351 | |
2352 | |
2353 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2354 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2355 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2356 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2357 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2358 return method->checked_exceptions_length(); |
0 | 2359 JVM_END |
2360 | |
2361 | |
2362 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2363 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2364 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2365 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2366 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2367 memcpy(code, method->code_base(), method->code_size()); |
0 | 2368 JVM_END |
2369 | |
2370 | |
2371 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2372 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2373 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2374 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2375 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2376 return method->code_size(); |
0 | 2377 JVM_END |
2378 | |
2379 | |
2380 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2381 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2382 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2383 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2384 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2385 ExceptionTable extable(method); |
6213
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2386 entry->start_pc = extable.start_pc(entry_index); |
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2387 entry->end_pc = extable.end_pc(entry_index); |
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2388 entry->handler_pc = extable.handler_pc(entry_index); |
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2389 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2390 JVM_END |
2391 | |
2392 | |
2393 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2394 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2395 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2396 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2397 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2398 return method->exception_table_length(); |
0 | 2399 JVM_END |
2400 | |
2401 | |
2402 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2403 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2404 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2405 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2406 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2407 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2408 JVM_END |
2409 | |
2410 | |
2411 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2412 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2413 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2414 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2415 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2416 JVM_END |
2417 | |
2418 | |
2419 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2420 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2421 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2422 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2423 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2424 return method->max_locals(); |
0 | 2425 JVM_END |
2426 | |
2427 | |
2428 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2429 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2430 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2431 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2432 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2433 return method->size_of_parameters(); |
0 | 2434 JVM_END |
2435 | |
2436 | |
2437 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2438 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2439 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2440 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2441 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2442 return method->verifier_max_stack(); |
0 | 2443 JVM_END |
2444 | |
2445 | |
2446 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2447 JVMWrapper("JVM_IsConstructorIx"); | |
2448 ResourceMark rm(THREAD); | |
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2449 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2450 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2451 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2452 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2453 JVM_END |
2454 | |
2455 | |
7958
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|
2456 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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|
2457 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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|
2458 ResourceMark rm(THREAD); |
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|
2459 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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|
2460 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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changeset
|
2461 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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changeset
|
2462 return method->is_overpass(); |
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|
2463 JVM_END |
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|
2464 |
0 | 2465 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2466 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2467 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2468 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2469 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2470 return method->name()->as_utf8(); |
0 | 2471 JVM_END |
2472 | |
2473 | |
2474 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2475 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2476 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2477 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2478 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2479 return method->signature()->as_utf8(); |
0 | 2480 JVM_END |
2481 | |
2482 /** | |
2483 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2484 * read entries in the constant pool. Since the old verifier always | |
2485 * works on a copy of the code, it will not see any rewriting that | |
2486 * may possibly occur in the middle of verification. So it is important | |
2487 * that nothing it calls tries to use the cpCache instead of the raw | |
2488 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2489 */ | |
2490 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2491 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2492 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2493 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2494 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2495 switch (cp->tag_at(cp_index).value()) { |
2496 case JVM_CONSTANT_Fieldref: | |
2497 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2498 default: | |
2499 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2500 } | |
2501 ShouldNotReachHere(); | |
2502 return NULL; | |
2503 JVM_END | |
2504 | |
2505 | |
2506 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2507 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2508 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2509 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2510 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2511 switch (cp->tag_at(cp_index).value()) { |
2512 case JVM_CONSTANT_InterfaceMethodref: | |
2513 case JVM_CONSTANT_Methodref: | |
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2514 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2515 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2516 default: | |
2517 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2518 } | |
2519 ShouldNotReachHere(); | |
2520 return NULL; | |
2521 JVM_END | |
2522 | |
2523 | |
2524 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2525 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2526 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2527 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2528 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2529 switch (cp->tag_at(cp_index).value()) { |
2530 case JVM_CONSTANT_InterfaceMethodref: | |
2531 case JVM_CONSTANT_Methodref: | |
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|
2532 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2533 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2534 default: | |
2535 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2536 } | |
2537 ShouldNotReachHere(); | |
2538 return NULL; | |
2539 JVM_END | |
2540 | |
2541 | |
2542 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2543 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2544 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2545 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2546 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2547 switch (cp->tag_at(cp_index).value()) { |
2548 case JVM_CONSTANT_Fieldref: | |
2549 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2550 default: | |
2551 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2552 } | |
2553 ShouldNotReachHere(); | |
2554 return NULL; | |
2555 JVM_END | |
2556 | |
2557 | |
2558 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2559 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2560 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2561 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2562 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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|
2563 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2564 return classname->as_utf8(); |
2565 JVM_END | |
2566 | |
2567 | |
2568 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2569 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2570 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2571 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2572 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2573 switch (cp->tag_at(cp_index).value()) { |
2574 case JVM_CONSTANT_Fieldref: { | |
2575 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2576 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2577 return classname->as_utf8(); |
2578 } | |
2579 default: | |
2580 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2581 } | |
2582 ShouldNotReachHere(); | |
2583 return NULL; | |
2584 JVM_END | |
2585 | |
2586 | |
2587 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2588 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2589 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2590 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2591 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2592 switch (cp->tag_at(cp_index).value()) { |
2593 case JVM_CONSTANT_Methodref: | |
2594 case JVM_CONSTANT_InterfaceMethodref: { | |
2595 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2596 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2597 return classname->as_utf8(); |
2598 } | |
2599 default: | |
2600 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2601 } | |
2602 ShouldNotReachHere(); | |
2603 return NULL; | |
2604 JVM_END | |
2605 | |
2606 | |
3938 | 2607 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2608 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2609 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2610 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2611 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2612 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2613 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2614 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2615 switch (cp->tag_at(cp_index).value()) { |
2616 case JVM_CONSTANT_Fieldref: { | |
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2617 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2618 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2619 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2620 if (fs.name() == name && fs.signature() == signature) { | |
2621 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2622 } |
2623 } | |
2624 return -1; | |
2625 } | |
2626 default: | |
2627 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2628 } | |
2629 ShouldNotReachHere(); | |
2630 return 0; | |
2631 JVM_END | |
2632 | |
2633 | |
2634 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2635 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2636 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2637 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2638 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2639 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2640 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2641 switch (cp->tag_at(cp_index).value()) { |
2642 case JVM_CONSTANT_Methodref: | |
2643 case JVM_CONSTANT_InterfaceMethodref: { | |
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2644 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2645 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2646 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2647 int methods_count = methods->length(); |
2648 for (int i = 0; i < methods_count; i++) { | |
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2649 Method* method = methods->at(i); |
0 | 2650 if (method->name() == name && method->signature() == signature) { |
2651 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2652 } | |
2653 } | |
2654 return -1; | |
2655 } | |
2656 default: | |
2657 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2658 } | |
2659 ShouldNotReachHere(); | |
2660 return 0; | |
2661 JVM_END | |
2662 | |
2663 | |
2664 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2665 | |
2666 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2667 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2668 JVM_END | |
2669 | |
2670 | |
2671 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2672 JVMWrapper("JVM_IsSameClassPackage"); | |
2673 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2674 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2675 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2676 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2677 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2678 JVM_END | |
2679 | |
2680 | |
2681 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2682 | |
2683 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2684 JVMWrapper2("JVM_Open (%s)", fname); | |
2685 | |
2686 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
2687 int result = os::open(fname, flags, mode); |
0 | 2688 if (result >= 0) { |
2689 return result; | |
2690 } else { | |
2691 switch(errno) { | |
2692 case EEXIST: | |
2693 return JVM_EEXIST; | |
2694 default: | |
2695 return -1; | |
2696 } | |
2697 } | |
2698 JVM_END | |
2699 | |
2700 | |
2701 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2702 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2703 //%note jvm_r6 | |
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
2704 return os::close(fd); |
0 | 2705 JVM_END |
2706 | |
2707 | |
2708 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2709 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2710 | |
2711 //%note jvm_r6 | |
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6348631: remove the use of the HPI library from Hotspot
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|
2712 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2713 JVM_END |
2714 | |
2715 | |
2716 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2717 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2718 | |
2719 //%note jvm_r6 | |
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
2720 return (jint)os::write(fd, buf, nbytes); |
0 | 2721 JVM_END |
2722 | |
2723 | |
2724 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2725 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2726 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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|
2727 return os::available(fd, pbytes); |
0 | 2728 JVM_END |
2729 | |
2730 | |
2731 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2732 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2733 //%note jvm_r6 | |
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diff
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|
2734 return os::lseek(fd, offset, whence); |
0 | 2735 JVM_END |
2736 | |
2737 | |
2738 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2739 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
2740 return os::ftruncate(fd, length); |
0 | 2741 JVM_END |
2742 | |
2743 | |
2744 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2745 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2746 //%note jvm_r6 | |
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|
2747 return os::fsync(fd); |
0 | 2748 JVM_END |
2749 | |
2750 | |
2751 // Printing support ////////////////////////////////////////////////// | |
2752 extern "C" { | |
2753 | |
2754 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2755 // see bug 4399518, 4417214 | |
2756 if ((intptr_t)count <= 0) return -1; | |
2757 return vsnprintf(str, count, fmt, args); | |
2758 } | |
2759 | |
2760 | |
2761 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2762 va_list args; | |
2763 int len; | |
2764 va_start(args, fmt); | |
2765 len = jio_vsnprintf(str, count, fmt, args); | |
2766 va_end(args); | |
2767 return len; | |
2768 } | |
2769 | |
2770 | |
2771 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2772 int len; | |
2773 va_list args; | |
2774 va_start(args, fmt); | |
2775 len = jio_vfprintf(f, fmt, args); | |
2776 va_end(args); | |
2777 return len; | |
2778 } | |
2779 | |
2780 | |
2781 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2782 if (Arguments::vfprintf_hook() != NULL) { | |
2783 return Arguments::vfprintf_hook()(f, fmt, args); | |
2784 } else { | |
2785 return vfprintf(f, fmt, args); | |
2786 } | |
2787 } | |
2788 | |
2789 | |
2191 | 2790 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2791 int len; |
2792 va_list args; | |
2793 va_start(args, fmt); | |
2794 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2795 va_end(args); | |
2796 return len; | |
2797 } | |
2798 | |
2799 | |
2800 // HotSpot specific jio method | |
2801 void jio_print(const char* s) { | |
2802 // Try to make this function as atomic as possible. | |
2803 if (Arguments::vfprintf_hook() != NULL) { | |
2804 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2805 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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431
diff
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|
2806 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
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|
2807 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2808 } |
2809 } | |
2810 | |
2811 } // Extern C | |
2812 | |
2813 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2814 | |
2815 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2816 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2817 // OSThread objects. The exception to this rule is when the target object is the thread | |
2818 // doing the operation, in which case we know that the thread won't exit until the | |
2819 // operation is done (all exits being voluntary). There are a few cases where it is | |
2820 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2821 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2822 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2823 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2824 // implementation is local to this file, we always lock Threads_lock for that one. | |
2825 | |
2826 static void thread_entry(JavaThread* thread, TRAPS) { | |
2827 HandleMark hm(THREAD); | |
2828 Handle obj(THREAD, thread->threadObj()); | |
2829 JavaValue result(T_VOID); | |
2830 JavaCalls::call_virtual(&result, | |
2831 obj, | |
1142 | 2832 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
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|
2833 vmSymbols::run_method_name(), |
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|
2834 vmSymbols::void_method_signature(), |
0 | 2835 THREAD); |
2836 } | |
2837 | |
2838 | |
2839 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2840 JVMWrapper("JVM_StartThread"); | |
2841 JavaThread *native_thread = NULL; | |
2842 | |
2843 // We cannot hold the Threads_lock when we throw an exception, | |
2844 // due to rank ordering issues. Example: we might need to grab the | |
2845 // Heap_lock while we construct the exception. | |
2846 bool throw_illegal_thread_state = false; | |
2847 | |
2848 // We must release the Threads_lock before we can post a jvmti event | |
2849 // in Thread::start. | |
2850 { | |
2851 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2852 // we operate. | |
2853 MutexLocker mu(Threads_lock); | |
2854 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2855 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2856 // re-starting an already started thread, so we should usually find |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2857 // that the JavaThread is null. However for a JNI attached thread |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2858 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2859 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2860 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2861 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2862 throw_illegal_thread_state = true; |
0 | 2863 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2864 // We could also check the stillborn flag to see if this thread was already stopped, but |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2865 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2866 |
0 | 2867 jlong size = |
2868 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2869 // Allocate the C++ Thread structure and create the native thread. The | |
2870 // stack size retrieved from java is signed, but the constructor takes | |
2871 // size_t (an unsigned type), so avoid passing negative values which would | |
2872 // result in really large stacks. | |
2873 size_t sz = size > 0 ? (size_t) size : 0; | |
2874 native_thread = new JavaThread(&thread_entry, sz); | |
2875 | |
2876 // At this point it may be possible that no osthread was created for the | |
2877 // JavaThread due to lack of memory. Check for this situation and throw | |
2878 // an exception if necessary. Eventually we may want to change this so | |
2879 // that we only grab the lock if the thread was created successfully - | |
2880 // then we can also do this check and throw the exception in the | |
2881 // JavaThread constructor. | |
2882 if (native_thread->osthread() != NULL) { | |
2883 // Note: the current thread is not being used within "prepare". | |
2884 native_thread->prepare(jthread); | |
2885 } | |
2886 } | |
2887 } | |
2888 | |
2889 if (throw_illegal_thread_state) { | |
2890 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2891 } | |
2892 | |
2893 assert(native_thread != NULL, "Starting null thread?"); | |
2894 | |
2895 if (native_thread->osthread() == NULL) { | |
2896 // No one should hold a reference to the 'native_thread'. | |
2897 delete native_thread; | |
2898 if (JvmtiExport::should_post_resource_exhausted()) { | |
2899 JvmtiExport::post_resource_exhausted( | |
2900 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2901 "unable to create new native thread"); | |
2902 } | |
2903 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2904 "unable to create new native thread"); | |
2905 } | |
2906 | |
2907 Thread::start(native_thread); | |
2908 | |
2909 JVM_END | |
2910 | |
2911 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2912 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2913 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2914 // same thread as the sender, no safepoint is needed. |
0 | 2915 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2916 JVMWrapper("JVM_StopThread"); | |
2917 | |
2918 oop java_throwable = JNIHandles::resolve(throwable); | |
2919 if (java_throwable == NULL) { | |
2920 THROW(vmSymbols::java_lang_NullPointerException()); | |
2921 } | |
2922 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2923 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
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aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2924 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
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parents:
4717
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|
2925 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
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2926 receiver, (address)java_thread, throwable); |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2927 // First check if thread is alive |
0 | 2928 if (receiver != NULL) { |
2929 // Check if exception is getting thrown at self (use oop equality, since the | |
2930 // target object might exit) | |
2931 if (java_thread == thread->threadObj()) { | |
2932 THROW_OOP(java_throwable); | |
2933 } else { | |
2934 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2935 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2936 } | |
2937 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
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diff
changeset
|
2938 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2939 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2940 // - target thread has not been started before being stopped, or |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2941 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
2942 // We could read the threadStatus to determine which case it is |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2943 // but that is overkill as it doesn't matter. We must set the |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2944 // stillborn flag for the first case, and if the thread has already |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2945 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2946 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
changeset
|
2947 } |
0 | 2948 JVM_END |
2949 | |
2950 | |
2951 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2952 JVMWrapper("JVM_IsThreadAlive"); | |
2953 | |
2954 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2955 return java_lang_Thread::is_alive(thread_oop); | |
2956 JVM_END | |
2957 | |
2958 | |
2959 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2960 JVMWrapper("JVM_SuspendThread"); | |
2961 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2962 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2963 | |
2964 if (receiver != NULL) { | |
2965 // thread has run and has not exited (still on threads list) | |
2966 | |
2967 { | |
2968 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2969 if (receiver->is_external_suspend()) { | |
2970 // Don't allow nested external suspend requests. We can't return | |
2971 // an error from this interface so just ignore the problem. | |
2972 return; | |
2973 } | |
2974 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2975 return; | |
2976 } | |
2977 receiver->set_external_suspend(); | |
2978 } | |
2979 | |
2980 // java_suspend() will catch threads in the process of exiting | |
2981 // and will ignore them. | |
2982 receiver->java_suspend(); | |
2983 | |
2984 // It would be nice to have the following assertion in all the | |
2985 // time, but it is possible for a racing resume request to have | |
2986 // resumed this thread right after we suspended it. Temporarily | |
2987 // enable this assertion if you are chasing a different kind of | |
2988 // bug. | |
2989 // | |
2990 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2991 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2992 } | |
2993 JVM_END | |
2994 | |
2995 | |
2996 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2997 JVMWrapper("JVM_ResumeThread"); | |
2998 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2999 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
3000 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
3001 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
3002 // looks at it. | |
3003 MutexLocker ml(Threads_lock); | |
3004 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3005 if (thr != NULL) { | |
3006 // the thread has run and is not in the process of exiting | |
3007 thr->java_resume(); | |
3008 } | |
3009 JVM_END | |
3010 | |
3011 | |
3012 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3013 JVMWrapper("JVM_SetThreadPriority"); | |
3014 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3015 MutexLocker ml(Threads_lock); | |
3016 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3017 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3018 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3019 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3020 Thread::set_priority(thr, (ThreadPriority)prio); | |
3021 } | |
3022 JVM_END | |
3023 | |
3024 | |
3025 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3026 JVMWrapper("JVM_Yield"); | |
3027 if (os::dont_yield()) return; | |
4006 | 3028 #ifndef USDT2 |
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|
3029 HS_DTRACE_PROBE0(hotspot, thread__yield); |
4006 | 3030 #else /* USDT2 */ |
3031 HOTSPOT_THREAD_YIELD(); | |
3032 #endif /* USDT2 */ | |
0 | 3033 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3034 // Critical for similar threading behaviour | |
3035 if (ConvertYieldToSleep) { | |
3036 os::sleep(thread, MinSleepInterval, false); | |
3037 } else { | |
3038 os::yield(); | |
3039 } | |
3040 JVM_END | |
3041 | |
3042 | |
3043 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3044 JVMWrapper("JVM_Sleep"); | |
3045 | |
3046 if (millis < 0) { | |
3047 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3048 } | |
3049 | |
3050 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3051 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3052 } | |
3053 | |
3054 // Save current thread state and restore it at the end of this block. | |
3055 // And set new thread state to SLEEPING. | |
3056 JavaThreadSleepState jtss(thread); | |
3057 | |
4006 | 3058 #ifndef USDT2 |
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diff
changeset
|
3059 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
4006 | 3060 #else /* USDT2 */ |
3061 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3062 millis); | |
3063 #endif /* USDT2 */ | |
1324
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|
3064 |
10405 | 3065 EventThreadSleep event; |
3066 | |
0 | 3067 if (millis == 0) { |
3068 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3069 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3070 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3071 // for SOLARIS | |
3072 if (ConvertSleepToYield) { | |
3073 os::yield(); | |
3074 } else { | |
3075 ThreadState old_state = thread->osthread()->get_state(); | |
3076 thread->osthread()->set_state(SLEEPING); | |
3077 os::sleep(thread, MinSleepInterval, false); | |
3078 thread->osthread()->set_state(old_state); | |
3079 } | |
3080 } else { | |
3081 ThreadState old_state = thread->osthread()->get_state(); | |
3082 thread->osthread()->set_state(SLEEPING); | |
3083 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3084 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3085 // us while we were sleeping. We do not overwrite those. | |
3086 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3087 if (event.should_commit()) { |
3088 event.set_time(millis); | |
3089 event.commit(); | |
3090 } | |
4006 | 3091 #ifndef USDT2 |
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|
3092 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
4006 | 3093 #else /* USDT2 */ |
3094 HOTSPOT_THREAD_SLEEP_END( | |
3095 1); | |
3096 #endif /* USDT2 */ | |
0 | 3097 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3098 // to properly restore the thread state. That's likely wrong. | |
3099 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3100 } | |
3101 } | |
3102 thread->osthread()->set_state(old_state); | |
3103 } | |
10405 | 3104 if (event.should_commit()) { |
3105 event.set_time(millis); | |
3106 event.commit(); | |
3107 } | |
4006 | 3108 #ifndef USDT2 |
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diff
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|
3109 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
4006 | 3110 #else /* USDT2 */ |
3111 HOTSPOT_THREAD_SLEEP_END( | |
3112 0); | |
3113 #endif /* USDT2 */ | |
0 | 3114 JVM_END |
3115 | |
3116 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3117 JVMWrapper("JVM_CurrentThread"); | |
3118 oop jthread = thread->threadObj(); | |
3119 assert (thread != NULL, "no current thread!"); | |
3120 return JNIHandles::make_local(env, jthread); | |
3121 JVM_END | |
3122 | |
3123 | |
3124 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3125 JVMWrapper("JVM_CountStackFrames"); | |
3126 | |
3127 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3128 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3129 bool throw_illegal_thread_state = false; | |
3130 int count = 0; | |
3131 | |
3132 { | |
3133 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3134 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3135 // acquire of the lock | |
3136 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3137 | |
3138 if (thr == NULL) { | |
3139 // do nothing | |
3140 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3141 // Check whether this java thread has been suspended already. If not, throws | |
3142 // IllegalThreadStateException. We defer to throw that exception until | |
3143 // Threads_lock is released since loading exception class has to leave VM. | |
3144 // The correct way to test a thread is actually suspended is | |
3145 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3146 // the Threads_lock. The above tests are sufficient for our purposes | |
3147 // provided the walkability of the stack is stable - which it isn't | |
3148 // 100% but close enough for most practical purposes. | |
3149 throw_illegal_thread_state = true; | |
3150 } else { | |
3151 // Count all java activation, i.e., number of vframes | |
3152 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3153 // Native frames are not counted | |
3154 if (!vfst.method()->is_native()) count++; | |
3155 } | |
3156 } | |
3157 } | |
3158 | |
3159 if (throw_illegal_thread_state) { | |
3160 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3161 "this thread is not suspended"); | |
3162 } | |
3163 return count; | |
3164 JVM_END | |
3165 | |
3166 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3167 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3168 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3169 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3170 // outside the critical section. Threads_lock is hot so we want to minimize | |
3171 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3172 // two steps. The 1st phase, performed under Threads_lock, would return | |
3173 // a closure that'd be invoked after Threads_lock was dropped. | |
3174 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3175 // admit spurious wakeups. | |
3176 | |
3177 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3178 JVMWrapper("JVM_Interrupt"); | |
3179 | |
3180 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3181 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3182 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3183 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3184 // acquire of the lock | |
3185 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3186 if (thr != NULL) { | |
3187 Thread::interrupt(thr); | |
3188 } | |
3189 JVM_END | |
3190 | |
3191 | |
3192 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3193 JVMWrapper("JVM_IsInterrupted"); | |
3194 | |
3195 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3196 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3197 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3198 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3199 // acquire of the lock | |
3200 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3201 if (thr == NULL) { | |
3202 return JNI_FALSE; | |
3203 } else { | |
3204 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3205 } | |
3206 JVM_END | |
3207 | |
3208 | |
3209 // Return true iff the current thread has locked the object passed in | |
3210 | |
3211 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3212 JVMWrapper("JVM_HoldsLock"); | |
3213 assert(THREAD->is_Java_thread(), "sanity check"); | |
3214 if (obj == NULL) { | |
3215 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3216 } | |
3217 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3218 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3219 JVM_END | |
3220 | |
3221 | |
3222 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3223 JVMWrapper("JVM_DumpAllStacks"); | |
3224 VM_PrintThreads op; | |
3225 VMThread::execute(&op); | |
3226 if (JvmtiExport::should_post_data_dump()) { | |
3227 JvmtiExport::post_data_dump(); | |
3228 } | |
3229 JVM_END | |
3230 | |
4006 | 3231 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3232 JVMWrapper("JVM_SetNativeThreadName"); | |
3233 ResourceMark rm(THREAD); | |
3234 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3235 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3236 // Thread naming only supported for the current thread, doesn't work for | |
3237 // target threads. | |
3238 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3239 // we don't set the name of an attached thread to avoid stepping | |
3240 // on other programs | |
3241 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3242 os::set_native_thread_name(thread_name); | |
3243 } | |
3244 JVM_END | |
0 | 3245 |
3246 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3247 | |
3248 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3249 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3250 if (jthread->privileged_stack_top() == NULL) return false; | |
3251 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3252 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3253 if (loader == NULL) return true; | |
3254 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3255 if (trusted) return true; | |
3256 } | |
3257 return false; | |
3258 } | |
3259 | |
3260 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3261 JVMWrapper("JVM_CurrentLoadedClass"); | |
3262 ResourceMark rm(THREAD); | |
3263 | |
3264 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3265 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3266 bool trusted = is_trusted_frame(thread, &vfst); | |
3267 if (trusted) return NULL; | |
3268 | |
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|
3269 Method* m = vfst.method(); |
0 | 3270 if (!m->is_native()) { |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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|
3271 InstanceKlass* holder = m->method_holder(); |
18fb7da42534
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diff
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|
3272 oop loader = holder->class_loader(); |
0 | 3273 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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diff
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|
3274 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3275 } |
3276 } | |
3277 } | |
3278 return NULL; | |
3279 JVM_END | |
3280 | |
3281 | |
3282 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3283 JVMWrapper("JVM_CurrentClassLoader"); | |
3284 ResourceMark rm(THREAD); | |
3285 | |
3286 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3287 | |
3288 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3289 bool trusted = is_trusted_frame(thread, &vfst); | |
3290 if (trusted) return NULL; | |
3291 | |
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|
3292 Method* m = vfst.method(); |
0 | 3293 if (!m->is_native()) { |
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3294 InstanceKlass* holder = m->method_holder(); |
0 | 3295 assert(holder->is_klass(), "just checking"); |
6940
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diff
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|
3296 oop loader = holder->class_loader(); |
0 | 3297 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3298 return JNIHandles::make_local(env, loader); | |
3299 } | |
3300 } | |
3301 } | |
3302 return NULL; | |
3303 JVM_END | |
3304 | |
3305 | |
3306 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3307 JVMWrapper("JVM_GetClassContext"); | |
3308 ResourceMark rm(THREAD); | |
3309 JvmtiVMObjectAllocEventCollector oam; | |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3310 vframeStream vfst(thread); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3311 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
3312 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3313 // This must only be called from SecurityManager.getClassContext |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
3314 Method* m = vfst.method(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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diff
changeset
|
3315 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
3316 m->name() == vmSymbols::getClassContext_name() && |
16885e702c88
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3317 m->signature() == vmSymbols::void_class_array_signature())) { |
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3318 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3319 } |
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|
3320 } |
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3321 |
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3322 // Collect method holders |
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3323 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
8866
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3324 for (; !vfst.at_end(); vfst.security_next()) { |
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3325 Method* m = vfst.method(); |
0 | 3326 // Native frames are not returned |
8866
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3327 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3328 Klass* holder = m->method_holder(); |
0 | 3329 assert(holder->is_klass(), "just checking"); |
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3330 klass_array->append(holder); |
0 | 3331 } |
3332 } | |
3333 | |
3334 // Create result array of type [Ljava/lang/Class; | |
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3335 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3336 // Fill in mirrors corresponding to method holders |
11001
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3337 for (int i = 0; i < klass_array->length(); i++) { |
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3338 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3339 } |
3340 | |
3341 return (jobjectArray) JNIHandles::make_local(env, result); | |
3342 JVM_END | |
3343 | |
3344 | |
3345 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3346 JVMWrapper("JVM_ClassDepth"); | |
3347 ResourceMark rm(THREAD); | |
3348 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3349 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3350 | |
3351 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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3352 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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3353 if (class_name_sym == NULL) { |
0 | 3354 return -1; |
3355 } | |
3356 | |
3357 int depth = 0; | |
3358 | |
3359 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3360 if (!vfst.method()->is_native()) { | |
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3361 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3362 assert(holder->is_klass(), "just checking"); |
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|
3363 if (holder->name() == class_name_sym) { |
0 | 3364 return depth; |
3365 } | |
3366 depth++; | |
3367 } | |
3368 } | |
3369 return -1; | |
3370 JVM_END | |
3371 | |
3372 | |
3373 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3374 JVMWrapper("JVM_ClassLoaderDepth"); | |
3375 ResourceMark rm(THREAD); | |
3376 int depth = 0; | |
3377 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3378 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3379 bool trusted = is_trusted_frame(thread, &vfst); | |
3380 if (trusted) return -1; | |
3381 | |
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3382 Method* m = vfst.method(); |
0 | 3383 if (!m->is_native()) { |
6940
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3384 InstanceKlass* holder = m->method_holder(); |
0 | 3385 assert(holder->is_klass(), "just checking"); |
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3386 oop loader = holder->class_loader(); |
0 | 3387 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3388 return depth; | |
3389 } | |
3390 depth++; | |
3391 } | |
3392 } | |
3393 return -1; | |
3394 JVM_END | |
3395 | |
3396 | |
3397 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3398 | |
3399 | |
3400 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3401 JVMWrapper("JVM_GetSystemPackage"); | |
3402 ResourceMark rm(THREAD); | |
3403 JvmtiVMObjectAllocEventCollector oam; | |
3404 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3405 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3406 return (jstring) JNIHandles::make_local(result); | |
3407 JVM_END | |
3408 | |
3409 | |
3410 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3411 JVMWrapper("JVM_GetSystemPackages"); | |
3412 JvmtiVMObjectAllocEventCollector oam; | |
3413 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3414 return (jobjectArray) JNIHandles::make_local(result); | |
3415 JVM_END | |
3416 | |
3417 | |
3418 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3419 | |
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3420 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3421 if (current_class == NULL) { |
3422 return true; | |
3423 } | |
3424 if ((current_class == field_class) || access.is_public()) { | |
3425 return true; | |
3426 } | |
3427 | |
3428 if (access.is_protected()) { | |
3429 // See if current_class is a subclass of field_class | |
6983 | 3430 if (current_class->is_subclass_of(field_class)) { |
0 | 3431 return true; |
3432 } | |
3433 } | |
3434 | |
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3435 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3436 } |
3437 | |
3438 | |
3439 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3440 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3441 JVMWrapper("JVM_AllocateNewObject"); | |
3442 JvmtiVMObjectAllocEventCollector oam; | |
3443 // Receiver is not used | |
3444 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3445 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3446 | |
3447 // Cannot instantiate primitive types | |
3448 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3449 ResourceMark rm(THREAD); | |
3450 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3451 } | |
3452 | |
3453 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3454 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3455 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3456 ResourceMark rm(THREAD); |
3457 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3458 } | |
3459 | |
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3460 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3461 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3462 |
3463 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3464 | |
3465 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3466 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3467 | |
3468 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3469 curr_klass->initialize(CHECK_NULL); | |
3470 | |
3471 methodHandle m (THREAD, | |
3472 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3473 vmSymbols::void_method_signature())); | |
3474 if (m.is_null()) { | |
3475 ResourceMark rm(THREAD); | |
3476 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3477 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3478 vmSymbols::object_initializer_name(), |
3479 vmSymbols::void_method_signature())); | |
3480 } | |
3481 | |
3482 if (curr_klass == init_klass && !m->is_public()) { | |
3483 // Calling the constructor for class 'curr_klass'. | |
3484 // Only allow calls to a public no-arg constructor. | |
3485 // This path corresponds to creating an Externalizable object. | |
3486 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3487 } | |
3488 | |
3489 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3490 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3491 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3492 } | |
3493 | |
3494 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3495 // Call constructor m. This might call a constructor higher up in the hierachy | |
3496 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3497 | |
3498 return JNIHandles::make_local(obj()); | |
3499 JVM_END | |
3500 | |
3501 | |
3502 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3503 JVMWrapper("JVM_AllocateNewArray"); | |
3504 JvmtiVMObjectAllocEventCollector oam; | |
3505 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3506 | |
3507 if (java_lang_Class::is_primitive(mirror)) { | |
3508 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3509 } | |
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3510 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3511 oop result; |
3512 | |
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3513 if (k->oop_is_typeArray()) { |
0 | 3514 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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diff
changeset
|
3515 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
6725
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|
3516 } else if (k->oop_is_objArray()) { |
0 | 3517 // objArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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changeset
|
3518 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3519 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3520 result = oak->allocate(length, CHECK_NULL); | |
3521 } else { | |
3522 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3523 } | |
3524 return JNIHandles::make_local(env, result); | |
3525 JVM_END | |
3526 | |
3527 | |
3528 // Return the first non-null class loader up the execution stack, or null | |
3529 // if only code from the null class loader is on the stack. | |
3530 | |
3531 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3532 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3533 // UseNewReflection | |
3534 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
6940
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changeset
|
3535 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3536 if (loader != NULL) { |
3537 return JNIHandles::make_local(env, loader); | |
3538 } | |
3539 } | |
3540 return NULL; | |
3541 JVM_END | |
3542 | |
3543 | |
3544 // Load a class relative to the most recent class on the stack with a non-null | |
3545 // classloader. | |
3546 // This function has been deprecated and should not be considered part of the | |
3547 // specified JVM interface. | |
3548 | |
3549 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3550 jclass currClass, jstring currClassName)) | |
3551 JVMWrapper("JVM_LoadClass0"); | |
3552 // Receiver is not used | |
3553 ResourceMark rm(THREAD); | |
3554 | |
3555 // Class name argument is not guaranteed to be in internal format | |
3556 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3557 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3558 | |
3559 const char* str = java_lang_String::as_utf8_string(string()); | |
3560 | |
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|
3561 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3562 // It's impossible to create this class; the name cannot fit |
3563 // into the constant pool. | |
3564 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3565 } | |
3566 | |
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|
3567 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3568 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3569 // Find the most recent class on the stack with a non-null classloader | |
3570 oop loader = NULL; | |
3571 oop protection_domain = NULL; | |
3572 if (curr_klass.is_null()) { | |
3573 for (vframeStream vfst(thread); | |
3574 !vfst.at_end() && loader == NULL; | |
3575 vfst.next()) { | |
3576 if (!vfst.method()->is_native()) { | |
6940
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changeset
|
3577 InstanceKlass* holder = vfst.method()->method_holder(); |
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coleenp
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changeset
|
3578 loader = holder->class_loader(); |
18fb7da42534
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changeset
|
3579 protection_domain = holder->protection_domain(); |
0 | 3580 } |
3581 } | |
3582 } else { | |
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3583 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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3584 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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3585 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3586 } |
3587 Handle h_loader(THREAD, loader); | |
3588 Handle h_prot (THREAD, protection_domain); | |
657
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acorn
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changeset
|
3589 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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diff
changeset
|
3590 false, thread); |
715dceaa89b7
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diff
changeset
|
3591 if (TraceClassResolution && result != NULL) { |
6725
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3592 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
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changeset
|
3593 } |
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|
3594 return result; |
0 | 3595 JVM_END |
3596 | |
3597 | |
3598 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3599 | |
3600 | |
3601 // resolve array handle and check arguments | |
3602 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3603 if (arr == NULL) { | |
3604 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3605 } | |
3606 oop a = JNIHandles::resolve_non_null(arr); | |
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3607 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3608 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3609 } | |
3610 return arrayOop(a); | |
3611 } | |
3612 | |
3613 | |
3614 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3615 JVMWrapper("JVM_GetArrayLength"); | |
3616 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3617 return a->length(); | |
3618 JVM_END | |
3619 | |
3620 | |
3621 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3622 JVMWrapper("JVM_Array_Get"); | |
3623 JvmtiVMObjectAllocEventCollector oam; | |
3624 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3625 jvalue value; | |
3626 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3627 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3628 return JNIHandles::make_local(env, box); | |
3629 JVM_END | |
3630 | |
3631 | |
3632 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3633 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3634 jvalue value; | |
3635 value.i = 0; // to initialize value before getting used in CHECK | |
3636 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3637 assert(a->is_typeArray(), "just checking"); | |
3638 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3639 BasicType wide_type = (BasicType) wCode; | |
3640 if (type != wide_type) { | |
3641 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3642 } | |
3643 return value; | |
3644 JVM_END | |
3645 | |
3646 | |
3647 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3648 JVMWrapper("JVM_SetArrayElement"); | |
3649 arrayOop a = check_array(env, arr, false, CHECK); | |
3650 oop box = JNIHandles::resolve(val); | |
3651 jvalue value; | |
3652 value.i = 0; // to initialize value before getting used in CHECK | |
3653 BasicType value_type; | |
3654 if (a->is_objArray()) { | |
3655 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3656 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3657 } else { | |
3658 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3659 } | |
3660 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3661 JVM_END | |
3662 | |
3663 | |
3664 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3665 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3666 arrayOop a = check_array(env, arr, true, CHECK); | |
3667 assert(a->is_typeArray(), "just checking"); | |
3668 BasicType value_type = (BasicType) vCode; | |
3669 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3670 JVM_END | |
3671 | |
3672 | |
3673 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3674 JVMWrapper("JVM_NewArray"); | |
3675 JvmtiVMObjectAllocEventCollector oam; | |
3676 oop element_mirror = JNIHandles::resolve(eltClass); | |
3677 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3678 return JNIHandles::make_local(env, result); | |
3679 JVM_END | |
3680 | |
3681 | |
3682 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3683 JVMWrapper("JVM_NewMultiArray"); | |
3684 JvmtiVMObjectAllocEventCollector oam; | |
3685 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3686 oop element_mirror = JNIHandles::resolve(eltClass); | |
3687 assert(dim_array->is_typeArray(), "just checking"); | |
3688 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3689 return JNIHandles::make_local(env, result); | |
3690 JVM_END | |
3691 | |
3692 | |
3693 // Networking library support //////////////////////////////////////////////////////////////////// | |
3694 | |
3695 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3696 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
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diff
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|
3697 return 0; |
0 | 3698 JVM_END |
3699 | |
3700 | |
3701 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3702 JVMWrapper("JVM_Socket"); | |
1980
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diff
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|
3703 return os::socket(domain, type, protocol); |
0 | 3704 JVM_END |
3705 | |
3706 | |
3707 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3708 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3709 //%note jvm_r6 | |
1980
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diff
changeset
|
3710 return os::socket_close(fd); |
0 | 3711 JVM_END |
3712 | |
3713 | |
3714 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3715 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3716 //%note jvm_r6 | |
1980
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diff
changeset
|
3717 return os::socket_shutdown(fd, howto); |
0 | 3718 JVM_END |
3719 | |
3720 | |
3721 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3722 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3723 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3724 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3725 JVM_END |
3726 | |
3727 | |
3728 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3729 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3730 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3731 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3732 JVM_END |
3733 | |
3734 | |
3735 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3736 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3737 //%note jvm_r6 | |
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diff
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|
3738 return os::timeout(fd, timeout); |
0 | 3739 JVM_END |
3740 | |
3741 | |
3742 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3743 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3744 //%note jvm_r6 | |
1980
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diff
changeset
|
3745 return os::listen(fd, count); |
0 | 3746 JVM_END |
3747 | |
3748 | |
3749 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3750 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3751 //%note jvm_r6 | |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3752 return os::connect(fd, him, (socklen_t)len); |
0 | 3753 JVM_END |
3754 | |
3755 | |
3756 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3757 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3758 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3759 return os::bind(fd, him, (socklen_t)len); |
0 | 3760 JVM_END |
3761 | |
3762 | |
3763 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3764 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3765 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3766 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
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diff
changeset
|
3767 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3768 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3769 return result; |
0 | 3770 JVM_END |
3771 | |
3772 | |
3773 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3774 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3775 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3776 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3777 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
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diff
changeset
|
3778 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3779 return result; |
0 | 3780 JVM_END |
3781 | |
3782 | |
3783 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3784 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3785 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3786 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3787 jint result = os::get_sock_name(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3788 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3789 return result; |
0 | 3790 JVM_END |
3791 | |
3792 | |
3793 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3794 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3795 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3796 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3797 JVM_END |
3798 | |
3799 | |
3800 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3801 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3802 //%note jvm_r6 | |
1980
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diff
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3803 return os::socket_available(fd, pbytes); |
0 | 3804 JVM_END |
3805 | |
3806 | |
3807 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3808 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3809 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3810 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3811 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:
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diff
changeset
|
3812 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3813 return result; |
0 | 3814 JVM_END |
3815 | |
3816 | |
3817 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3818 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3819 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3820 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3821 JVM_END |
3822 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3823 |
0 | 3824 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3825 JVMWrapper("JVM_GetHostName"); | |
1980
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ikrylov
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diff
changeset
|
3826 return os::get_host_name(name, namelen); |
828eafbd85cc
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ikrylov
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diff
changeset
|
3827 JVM_END |
0 | 3828 |
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3829 |
0 | 3830 // Library support /////////////////////////////////////////////////////////////////////////// |
3831 | |
3832 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3833 //%note jvm_ct | |
3834 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3835 char ebuf[1024]; | |
3836 void *load_result; | |
3837 { | |
3838 ThreadToNativeFromVM ttnfvm(thread); | |
1980
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ikrylov
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diff
changeset
|
3839 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3840 } |
3841 if (load_result == NULL) { | |
3842 char msg[1024]; | |
3843 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3844 // Since 'ebuf' may contain a string encoded using | |
3845 // platform encoding scheme, we need to pass | |
3846 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3847 // as the last argument. See bug 6367357. | |
3848 Handle h_exception = | |
3849 Exceptions::new_exception(thread, | |
3850 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3851 msg, Exceptions::unsafe_to_utf8); | |
3852 | |
3853 THROW_HANDLE_0(h_exception); | |
3854 } | |
3855 return load_result; | |
3856 JVM_END | |
3857 | |
3858 | |
3859 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3860 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
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ikrylov
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diff
changeset
|
3861 os::dll_unload(handle); |
0 | 3862 JVM_END |
3863 | |
3864 | |
3865 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3866 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3867 return os::dll_lookup(handle, name); |
0 | 3868 JVM_END |
3869 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3870 |
0 | 3871 // Floating point support //////////////////////////////////////////////////////////////////// |
3872 | |
3873 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3874 JVMWrapper("JVM_IsNaN"); | |
3875 return g_isnan(a); | |
3876 JVM_END | |
3877 | |
3878 | |
3879 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3880 | |
3881 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3882 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3883 return Threads::is_supported_jni_version_including_1_1(version); | |
3884 JVM_END | |
3885 | |
3886 | |
3887 // String support /////////////////////////////////////////////////////////////////////////// | |
3888 | |
3889 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3890 JVMWrapper("JVM_InternString"); | |
3891 JvmtiVMObjectAllocEventCollector oam; | |
3892 if (str == NULL) return NULL; | |
3893 oop string = JNIHandles::resolve_non_null(str); | |
3894 oop result = StringTable::intern(string, CHECK_NULL); | |
3895 return (jstring) JNIHandles::make_local(env, result); | |
3896 JVM_END | |
3897 | |
3898 | |
3899 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3900 | |
3901 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3902 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3903 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3904 // that only works with java threads. | |
3905 | |
3906 | |
3907 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3908 VM_Exit::block_if_vm_exited(); | |
3909 JVMWrapper("JVM_RawMonitorCreate"); | |
3910 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3911 } | |
3912 | |
3913 | |
3914 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3915 VM_Exit::block_if_vm_exited(); | |
3916 JVMWrapper("JVM_RawMonitorDestroy"); | |
3917 delete ((Mutex*) mon); | |
3918 } | |
3919 | |
3920 | |
3921 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3922 VM_Exit::block_if_vm_exited(); | |
3923 JVMWrapper("JVM_RawMonitorEnter"); | |
3924 ((Mutex*) mon)->jvm_raw_lock(); | |
3925 return 0; | |
3926 } | |
3927 | |
3928 | |
3929 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3930 VM_Exit::block_if_vm_exited(); | |
3931 JVMWrapper("JVM_RawMonitorExit"); | |
3932 ((Mutex*) mon)->jvm_raw_unlock(); | |
3933 } | |
3934 | |
3935 | |
3936 // Support for Serialization | |
3937 | |
3938 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3939 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3940 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3941 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3942 | |
3943 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3944 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3945 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3946 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3947 | |
3948 | |
3949 void initialize_converter_functions() { | |
3950 if (JDK_Version::is_gte_jdk14x_version()) { | |
3951 // These functions only exist for compatibility with 1.3.1 and earlier | |
3952 return; | |
3953 } | |
3954 | |
3955 // called from universe_post_init() | |
3956 assert( | |
3957 int_bits_to_float_fn == NULL && | |
3958 long_bits_to_double_fn == NULL && | |
3959 float_to_int_bits_fn == NULL && | |
3960 double_to_long_bits_fn == NULL , | |
3961 "initialization done twice" | |
3962 ); | |
3963 // initialize | |
3964 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3965 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3966 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3967 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3968 // verify | |
3969 assert( | |
3970 int_bits_to_float_fn != NULL && | |
3971 long_bits_to_double_fn != NULL && | |
3972 float_to_int_bits_fn != NULL && | |
3973 double_to_long_bits_fn != NULL , | |
3974 "initialization failed" | |
3975 ); | |
3976 } | |
3977 | |
3978 | |
3979 // Serialization | |
3980 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3981 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3982 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3983 | |
3984 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3985 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3986 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3987 oop o = JNIHandles::resolve(obj); | |
3988 | |
3989 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3990 THROW(vmSymbols::java_lang_NullPointerException()); | |
3991 } | |
3992 | |
3993 jsize nfids = fids->length(); | |
3994 if (nfids == 0) return; | |
3995 | |
3996 if (tcodes->length() < nfids) { | |
3997 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3998 } | |
3999 | |
4000 jsize off = 0; | |
4001 /* loop through fields, setting values */ | |
4002 for (jsize i = 0; i < nfids; i++) { | |
4003 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
4004 int field_offset; | |
4005 if (fid != NULL) { | |
4006 // NULL is a legal value for fid, but retrieving the field offset | |
4007 // trigger assertion in that case | |
4008 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4009 } | |
4010 | |
4011 switch (tcodes->char_at(i)) { | |
4012 case 'Z': | |
4013 if (fid != NULL) { | |
4014 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
4015 o->bool_field_put(field_offset, val); | |
4016 } | |
4017 off++; | |
4018 break; | |
4019 | |
4020 case 'B': | |
4021 if (fid != NULL) { | |
4022 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
4023 } | |
4024 off++; | |
4025 break; | |
4026 | |
4027 case 'C': | |
4028 if (fid != NULL) { | |
4029 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
4030 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
4031 o->char_field_put(field_offset, val); | |
4032 } | |
4033 off += 2; | |
4034 break; | |
4035 | |
4036 case 'S': | |
4037 if (fid != NULL) { | |
4038 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
4039 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
4040 o->short_field_put(field_offset, val); | |
4041 } | |
4042 off += 2; | |
4043 break; | |
4044 | |
4045 case 'I': | |
4046 if (fid != NULL) { | |
4047 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4048 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4049 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4050 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4051 o->int_field_put(field_offset, ival); | |
4052 } | |
4053 off += 4; | |
4054 break; | |
4055 | |
4056 case 'F': | |
4057 if (fid != NULL) { | |
4058 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
4059 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
4060 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
4061 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
4062 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
4063 o->float_field_put(field_offset, fval); | |
4064 } | |
4065 off += 4; | |
4066 break; | |
4067 | |
4068 case 'J': | |
4069 if (fid != NULL) { | |
4070 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4071 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4072 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4073 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4074 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4075 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4076 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4077 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4078 o->long_field_put(field_offset, lval); | |
4079 } | |
4080 off += 8; | |
4081 break; | |
4082 | |
4083 case 'D': | |
4084 if (fid != NULL) { | |
4085 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
4086 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
4087 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
4088 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
4089 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
4090 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
4091 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
4092 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
4093 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
4094 o->double_field_put(field_offset, dval); | |
4095 } | |
4096 off += 8; | |
4097 break; | |
4098 | |
4099 default: | |
4100 // Illegal typecode | |
4101 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4102 } | |
4103 } | |
4104 JVM_END | |
4105 | |
4106 | |
4107 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
4108 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
4109 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
4110 | |
4111 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
4112 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
4113 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
4114 oop o = JNIHandles::resolve(obj); | |
4115 | |
4116 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
4117 THROW(vmSymbols::java_lang_NullPointerException()); | |
4118 } | |
4119 | |
4120 jsize nfids = fids->length(); | |
4121 if (nfids == 0) return; | |
4122 | |
4123 if (tcodes->length() < nfids) { | |
4124 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
4125 } | |
4126 | |
4127 /* loop through fields, fetching values */ | |
4128 jsize off = 0; | |
4129 for (jsize i = 0; i < nfids; i++) { | |
4130 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
4131 if (fid == NULL) { | |
4132 THROW(vmSymbols::java_lang_NullPointerException()); | |
4133 } | |
4134 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4135 | |
4136 switch (tcodes->char_at(i)) { | |
4137 case 'Z': | |
4138 { | |
4139 jboolean val = o->bool_field(field_offset); | |
4140 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
4141 } | |
4142 break; | |
4143 | |
4144 case 'B': | |
4145 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
4146 break; | |
4147 | |
4148 case 'C': | |
4149 { | |
4150 jchar val = o->char_field(field_offset); | |
4151 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4152 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4153 } | |
4154 break; | |
4155 | |
4156 case 'S': | |
4157 { | |
4158 jshort val = o->short_field(field_offset); | |
4159 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4160 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4161 } | |
4162 break; | |
4163 | |
4164 case 'I': | |
4165 { | |
4166 jint val = o->int_field(field_offset); | |
4167 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4168 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4169 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4170 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4171 } | |
4172 break; | |
4173 | |
4174 case 'F': | |
4175 { | |
4176 jfloat fval = o->float_field(field_offset); | |
4177 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
4178 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
4179 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
4180 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
4181 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
4182 } | |
4183 break; | |
4184 | |
4185 case 'J': | |
4186 { | |
4187 jlong val = o->long_field(field_offset); | |
4188 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
4189 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
4190 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
4191 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
4192 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
4193 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
4194 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
4195 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
4196 } | |
4197 break; | |
4198 | |
4199 case 'D': | |
4200 { | |
4201 jdouble dval = o->double_field(field_offset); | |
4202 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
4203 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
4204 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
4205 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
4206 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
4207 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
4208 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
4209 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
4210 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
4211 } | |
4212 break; | |
4213 | |
4214 default: | |
4215 // Illegal typecode | |
4216 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
4217 } | |
4218 } | |
4219 JVM_END | |
4220 | |
4221 | |
4222 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
4223 | |
2177
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diff
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|
4224 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 4225 // Security Note: |
4226 // The Java level wrapper will perform the necessary security check allowing | |
4227 // us to pass the NULL as the initiating class loader. | |
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6271
diff
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|
4228 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
878
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diff
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|
4229 |
0 | 4230 KlassHandle klass_handle(THREAD, klass); |
4231 // Check if we should initialize the class | |
4232 if (init && klass_handle->oop_is_instance()) { | |
4233 klass_handle->initialize(CHECK_NULL); | |
4234 } | |
4235 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
4236 } | |
4237 | |
4238 | |
4239 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
4240 | |
4241 #ifndef PRODUCT | |
4242 | |
4243 extern "C" { | |
4244 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
4245 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
4246 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4247 } | |
4248 | |
4249 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4250 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4251 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
4252 JVM_END | |
4253 | |
4254 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4255 JVMWrapper("JVM_AccessVMIntFlag"); | |
4256 intx v; | |
4257 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4258 *value = (jint)v; | |
4259 return result; | |
4260 JVM_END | |
4261 | |
4262 | |
4263 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4264 JVMWrapper("JVM_VMBreakPoint"); | |
4265 oop the_obj = JNIHandles::resolve(obj); | |
4266 BREAKPOINT; | |
4267 JVM_END | |
4268 | |
4269 | |
4270 #endif | |
4271 | |
4272 | |
4273 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4274 | |
4275 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4276 JVMWrapper("JVM_InvokeMethod"); | |
4277 Handle method_handle; | |
4278 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4279 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4280 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4281 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4282 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4283 jobject res = JNIHandles::make_local(env, result); | |
4284 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4285 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4286 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4287 if (java_lang_Class::is_primitive(ret_type)) { | |
4288 // Only for primitive type vm allocates memory for java object. | |
4289 // See box() method. | |
4290 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4291 } | |
4292 } | |
4293 return res; | |
4294 } else { | |
4295 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4296 } | |
4297 JVM_END | |
4298 | |
4299 | |
4300 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4301 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4302 oop constructor_mirror = JNIHandles::resolve(c); | |
4303 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4304 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4305 jobject res = JNIHandles::make_local(env, result); | |
4306 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4307 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4308 } | |
4309 return res; | |
4310 JVM_END | |
4311 | |
4312 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4313 | |
4314 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4315 JVMWrapper("JVM_SupportsCX8"); | |
4316 return VM_Version::supports_cx8(); | |
4317 JVM_END | |
4318 | |
4319 | |
4320 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4321 JVMWrapper("JVM_CX8Field"); | |
4322 jlong res; | |
4323 oop o = JNIHandles::resolve(obj); | |
4324 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4325 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4326 | |
4327 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4328 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4329 | |
4330 return res == oldVal; | |
4331 JVM_END | |
4332 | |
116
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4333 // DTrace /////////////////////////////////////////////////////////////////// |
018d5b58dd4f
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diff
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|
4334 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4335 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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diff
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|
4336 JVMWrapper("JVM_DTraceGetVersion"); |
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diff
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|
4337 return (jint)JVM_TRACING_DTRACE_VERSION; |
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diff
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|
4338 JVM_END |
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diff
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|
4339 |
018d5b58dd4f
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diff
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|
4340 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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0
diff
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|
4341 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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diff
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|
4342 JVM_DTraceProvider* providers)) |
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diff
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|
4343 JVMWrapper("JVM_DTraceActivate"); |
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diff
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|
4344 return DTraceJSDT::activate( |
018d5b58dd4f
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0
diff
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|
4345 version, module_name, providers_count, providers, CHECK_0); |
018d5b58dd4f
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diff
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|
4346 JVM_END |
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diff
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|
4347 |
018d5b58dd4f
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diff
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|
4348 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
018d5b58dd4f
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diff
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|
4349 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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diff
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|
4350 return DTraceJSDT::is_probe_enabled(method); |
018d5b58dd4f
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diff
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|
4351 JVM_END |
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diff
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|
4352 |
018d5b58dd4f
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diff
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|
4353 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
018d5b58dd4f
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diff
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|
4354 JVMWrapper("JVM_DTraceDispose"); |
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diff
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|
4355 DTraceJSDT::dispose(handle); |
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diff
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|
4356 JVM_END |
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diff
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|
4357 |
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diff
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|
4358 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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diff
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|
4359 JVMWrapper("JVM_DTraceIsSupported"); |
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diff
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4360 return DTraceJSDT::is_supported(); |
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diff
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|
4361 JVM_END |
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4362 |
0 | 4363 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4364 // jvmti agent threads, and JNI attaching threads are skipped) | |
4365 // See CR 6404306 regarding JNI attaching threads | |
4366 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4367 ResourceMark rm(THREAD); | |
4368 ThreadsListEnumerator tle(THREAD, false, false); | |
4369 JvmtiVMObjectAllocEventCollector oam; | |
4370 | |
4371 int num_threads = tle.num_threads(); | |
1142 | 4372 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4373 objArrayHandle threads_ah(THREAD, r); |
4374 | |
4375 for (int i = 0; i < num_threads; i++) { | |
4376 Handle h = tle.get_threadObj(i); | |
4377 threads_ah->obj_at_put(i, h()); | |
4378 } | |
4379 | |
4380 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4381 JVM_END | |
4382 | |
4383 | |
4384 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4385 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4386 // the corresponding entry in the given threads array | |
4387 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4388 JVMWrapper("JVM_DumpThreads"); | |
4389 JvmtiVMObjectAllocEventCollector oam; | |
4390 | |
4391 // Check if threads is null | |
4392 if (threads == NULL) { | |
4393 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4394 } | |
4395 | |
4396 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4397 objArrayHandle ah(THREAD, a); | |
4398 int num_threads = ah->length(); | |
4399 // check if threads is non-empty array | |
4400 if (num_threads == 0) { | |
4401 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4402 } | |
4403 | |
4404 // check if threads is not an array of objects of Thread class | |
6831
d8ce2825b193
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|
4405 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4406 if (k != SystemDictionary::Thread_klass()) { |
0 | 4407 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4408 } | |
4409 | |
4410 ResourceMark rm(THREAD); | |
4411 | |
4412 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4413 for (int i = 0; i < num_threads; i++) { | |
4414 oop thread_obj = ah->obj_at(i); | |
4415 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4416 thread_handle_array->append(h); | |
4417 } | |
4418 | |
4419 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4420 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4421 | |
4422 JVM_END | |
4423 | |
4424 // JVM monitoring and management support | |
4425 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4426 return Management::get_jmm_interface(version); | |
4427 JVM_END | |
4428 | |
4429 // com.sun.tools.attach.VirtualMachine agent properties support | |
4430 // | |
4431 // Initialize the agent properties with the properties maintained in the VM | |
4432 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4433 JVMWrapper("JVM_InitAgentProperties"); | |
4434 ResourceMark rm; | |
4435 | |
4436 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4437 | |
4438 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4439 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4440 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4441 return properties; | |
4442 JVM_END | |
4443 | |
4444 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4445 { | |
4446 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4447 JvmtiVMObjectAllocEventCollector oam; | |
4448 | |
4449 if (ofClass == NULL) { | |
4450 return NULL; | |
4451 } | |
4452 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4453 // Special handling for primitive objects | |
4454 if (java_lang_Class::is_primitive(mirror())) { | |
4455 return NULL; | |
4456 } | |
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4457 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4458 if (!k->oop_is_instance()) { |
0 | 4459 return NULL; |
4460 } | |
4461 instanceKlassHandle ik_h(THREAD, k); | |
4462 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4463 if (encl_method_class_idx == 0) { | |
4464 return NULL; | |
4465 } | |
1142 | 4466 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4467 objArrayHandle dest(THREAD, dest_o); |
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4468 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4469 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4470 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4471 if (encl_method_method_idx != 0) { | |
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2162
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|
4472 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4473 extract_low_short_from_int( |
4474 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4475 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4476 dest->obj_at_put(1, str()); | |
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|
4477 sym = ik_h->constants()->symbol_at( |
0 | 4478 extract_high_short_from_int( |
4479 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4480 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4481 dest->obj_at_put(2, str()); | |
4482 } | |
4483 return (jobjectArray) JNIHandles::make_local(dest()); | |
4484 } | |
4485 JVM_END | |
4486 | |
4487 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4488 jint javaThreadState)) | |
4489 { | |
4490 // If new thread states are added in future JDK and VM versions, | |
4491 // this should check if the JDK version is compatible with thread | |
4492 // states supported by the VM. Return NULL if not compatible. | |
4493 // | |
4494 // This function must map the VM java_lang_Thread::ThreadStatus | |
4495 // to the Java thread state that the JDK supports. | |
4496 // | |
4497 | |
4498 typeArrayHandle values_h; | |
4499 switch (javaThreadState) { | |
4500 case JAVA_THREAD_STATE_NEW : { | |
4501 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4502 values_h = typeArrayHandle(THREAD, r); | |
4503 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4504 break; | |
4505 } | |
4506 case JAVA_THREAD_STATE_RUNNABLE : { | |
4507 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4508 values_h = typeArrayHandle(THREAD, r); | |
4509 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4510 break; | |
4511 } | |
4512 case JAVA_THREAD_STATE_BLOCKED : { | |
4513 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4514 values_h = typeArrayHandle(THREAD, r); | |
4515 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4516 break; | |
4517 } | |
4518 case JAVA_THREAD_STATE_WAITING : { | |
4519 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4520 values_h = typeArrayHandle(THREAD, r); | |
4521 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4522 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4523 break; | |
4524 } | |
4525 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4526 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4527 values_h = typeArrayHandle(THREAD, r); | |
4528 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4529 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4530 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4531 break; | |
4532 } | |
4533 case JAVA_THREAD_STATE_TERMINATED : { | |
4534 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4535 values_h = typeArrayHandle(THREAD, r); | |
4536 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4537 break; | |
4538 } | |
4539 default: | |
4540 // Unknown state - probably incompatible JDK version | |
4541 return NULL; | |
4542 } | |
4543 | |
4544 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4545 } | |
4546 JVM_END | |
4547 | |
4548 | |
4549 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4550 jint javaThreadState, | |
4551 jintArray values)) | |
4552 { | |
4553 // If new thread states are added in future JDK and VM versions, | |
4554 // this should check if the JDK version is compatible with thread | |
4555 // states supported by the VM. Return NULL if not compatible. | |
4556 // | |
4557 // This function must map the VM java_lang_Thread::ThreadStatus | |
4558 // to the Java thread state that the JDK supports. | |
4559 // | |
4560 | |
4561 ResourceMark rm; | |
4562 | |
4563 // Check if threads is null | |
4564 if (values == NULL) { | |
4565 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4566 } | |
4567 | |
4568 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4569 typeArrayHandle values_h(THREAD, v); | |
4570 | |
4571 objArrayHandle names_h; | |
4572 switch (javaThreadState) { | |
4573 case JAVA_THREAD_STATE_NEW : { | |
4574 assert(values_h->length() == 1 && | |
4575 values_h->int_at(0) == java_lang_Thread::NEW, | |
4576 "Invalid threadStatus value"); | |
4577 | |
1142 | 4578 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4579 1, /* only 1 substate */ |
4580 CHECK_NULL); | |
4581 names_h = objArrayHandle(THREAD, r); | |
4582 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4583 names_h->obj_at_put(0, name()); | |
4584 break; | |
4585 } | |
4586 case JAVA_THREAD_STATE_RUNNABLE : { | |
4587 assert(values_h->length() == 1 && | |
4588 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4589 "Invalid threadStatus value"); | |
4590 | |
1142 | 4591 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4592 1, /* only 1 substate */ |
4593 CHECK_NULL); | |
4594 names_h = objArrayHandle(THREAD, r); | |
4595 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4596 names_h->obj_at_put(0, name()); | |
4597 break; | |
4598 } | |
4599 case JAVA_THREAD_STATE_BLOCKED : { | |
4600 assert(values_h->length() == 1 && | |
4601 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4602 "Invalid threadStatus value"); | |
4603 | |
1142 | 4604 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4605 1, /* only 1 substate */ |
4606 CHECK_NULL); | |
4607 names_h = objArrayHandle(THREAD, r); | |
4608 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4609 names_h->obj_at_put(0, name()); | |
4610 break; | |
4611 } | |
4612 case JAVA_THREAD_STATE_WAITING : { | |
4613 assert(values_h->length() == 2 && | |
4614 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4615 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4616 "Invalid threadStatus value"); | |
1142 | 4617 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4618 2, /* number of substates */ |
4619 CHECK_NULL); | |
4620 names_h = objArrayHandle(THREAD, r); | |
4621 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4622 CHECK_NULL); | |
4623 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4624 CHECK_NULL); | |
4625 names_h->obj_at_put(0, name0()); | |
4626 names_h->obj_at_put(1, name1()); | |
4627 break; | |
4628 } | |
4629 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4630 assert(values_h->length() == 3 && | |
4631 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4632 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4633 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4634 "Invalid threadStatus value"); | |
1142 | 4635 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4636 3, /* number of substates */ |
4637 CHECK_NULL); | |
4638 names_h = objArrayHandle(THREAD, r); | |
4639 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4640 CHECK_NULL); | |
4641 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4642 CHECK_NULL); | |
4643 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4644 CHECK_NULL); | |
4645 names_h->obj_at_put(0, name0()); | |
4646 names_h->obj_at_put(1, name1()); | |
4647 names_h->obj_at_put(2, name2()); | |
4648 break; | |
4649 } | |
4650 case JAVA_THREAD_STATE_TERMINATED : { | |
4651 assert(values_h->length() == 1 && | |
4652 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4653 "Invalid threadStatus value"); | |
1142 | 4654 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4655 1, /* only 1 substate */ |
4656 CHECK_NULL); | |
4657 names_h = objArrayHandle(THREAD, r); | |
4658 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4659 names_h->obj_at_put(0, name()); | |
4660 break; | |
4661 } | |
4662 default: | |
4663 // Unknown state - probably incompatible JDK version | |
4664 return NULL; | |
4665 } | |
4666 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4667 } | |
4668 JVM_END | |
4669 | |
4670 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4671 { | |
4672 memset(info, 0, sizeof(info_size)); | |
4673 | |
4674 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4675 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4676 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4677 | |
4678 // when we add a new capability in the jvm_version_info struct, we should also | |
4679 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4680 // counter defined in runtimeService.cpp. | |
4681 info->is_attachable = AttachListener::is_attach_supported(); | |
4682 } | |
4683 JVM_END |