Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 17016:3482684330ee
cherry-pick: 8041980: (hotspot) sun/jvmstat/monitor/MonitoredVm/CR6672135.java failing on all platforms
Reviewed-by: mgronlun, kamg
Contributed-by: sla
author | Bernhard Urban <bernhard.urban@jku.at> |
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date | Tue, 02 Sep 2014 22:19:44 +0200 |
parents | 5c0f2b338874 |
children | 52b4284cb496 |
rev | line source |
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0 | 1 /* |
14909 | 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 | |
14909 | 85 #ifndef USDT2 |
86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); | |
87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); | |
88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); | |
89 #endif /* !USDT2 */ | |
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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377 #elif defined(GRAAL) |
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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 | |
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394 /* |
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395 * Return the temporary directory that the VM uses for the attach |
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396 * and perf data files. |
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397 * |
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398 * It is important that this directory is well-known and the |
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399 * same for all VM instances. It cannot be affected by configuration |
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400 * variables such as java.io.tmpdir. |
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401 */ |
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402 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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403 JVMWrapper("JVM_GetTemporaryDirectory"); |
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404 HandleMark hm(THREAD); |
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405 const char* temp_dir = os::get_temp_directory(); |
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406 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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407 return (jstring) JNIHandles::make_local(env, h()); |
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408 JVM_END |
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409 |
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410 |
0 | 411 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
412 | |
413 extern volatile jint vm_created; | |
414 | |
415 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
416 if (vm_created != 0 && (code == 0)) { | |
417 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
418 Universe::run_finalizers_on_exit(); | |
419 } | |
420 before_exit(thread); | |
421 vm_exit(code); | |
422 JVM_END | |
423 | |
424 | |
425 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
426 before_exit(thread); | |
427 vm_exit(code); | |
428 JVM_END | |
429 | |
430 | |
431 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
432 register_on_exit_function(func); | |
433 JVM_END | |
434 | |
435 | |
436 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
437 JVMWrapper("JVM_GC"); | |
438 if (!DisableExplicitGC) { | |
439 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
440 } | |
441 JVM_END | |
442 | |
443 | |
444 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
445 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
446 return Universe::heap()->millis_since_last_gc(); | |
447 JVM_END | |
448 | |
449 | |
450 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
451 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
452 JVM_END | |
453 | |
454 | |
455 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
456 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
457 JVM_END | |
458 | |
459 static inline jlong convert_size_t_to_jlong(size_t val) { | |
460 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
461 NOT_LP64 (return (jlong)val;) | |
462 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
463 } | |
464 | |
465 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
466 JVMWrapper("JVM_TotalMemory"); | |
467 size_t n = Universe::heap()->capacity(); | |
468 return convert_size_t_to_jlong(n); | |
469 JVM_END | |
470 | |
471 | |
472 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
473 JVMWrapper("JVM_FreeMemory"); | |
474 CollectedHeap* ch = Universe::heap(); | |
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475 size_t n; |
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476 { |
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477 MutexLocker x(Heap_lock); |
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478 n = ch->capacity() - ch->used(); |
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479 } |
0 | 480 return convert_size_t_to_jlong(n); |
481 JVM_END | |
482 | |
483 | |
484 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
485 JVMWrapper("JVM_MaxMemory"); | |
486 size_t n = Universe::heap()->max_capacity(); | |
487 return convert_size_t_to_jlong(n); | |
488 JVM_END | |
489 | |
490 | |
491 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
492 JVMWrapper("JVM_ActiveProcessorCount"); | |
493 return os::active_processor_count(); | |
494 JVM_END | |
495 | |
496 | |
497 | |
498 // java.lang.Throwable ////////////////////////////////////////////////////// | |
499 | |
500 | |
501 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
502 JVMWrapper("JVM_FillInStackTrace"); | |
503 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
504 java_lang_Throwable::fill_in_stack_trace(exception); | |
505 JVM_END | |
506 | |
507 | |
508 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
509 JVMWrapper("JVM_GetStackTraceDepth"); | |
510 oop exception = JNIHandles::resolve(throwable); | |
511 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
512 JVM_END | |
513 | |
514 | |
515 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
516 JVMWrapper("JVM_GetStackTraceElement"); | |
517 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
518 oop exception = JNIHandles::resolve(throwable); | |
519 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
520 return JNIHandles::make_local(env, element); | |
521 JVM_END | |
522 | |
523 | |
524 // java.lang.Object /////////////////////////////////////////////// | |
525 | |
526 | |
527 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
528 JVMWrapper("JVM_IHashCode"); | |
529 // as implemented in the classic virtual machine; return 0 if object is NULL | |
530 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
531 JVM_END | |
532 | |
533 | |
534 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
535 JVMWrapper("JVM_MonitorWait"); | |
536 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
537 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
538 if (JvmtiExport::should_post_monitor_wait()) { | |
539 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
540 } | |
541 ObjectSynchronizer::wait(obj, ms, CHECK); | |
542 JVM_END | |
543 | |
544 | |
545 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
546 JVMWrapper("JVM_MonitorNotify"); | |
547 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
548 ObjectSynchronizer::notify(obj, CHECK); | |
549 JVM_END | |
550 | |
551 | |
552 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
553 JVMWrapper("JVM_MonitorNotifyAll"); | |
554 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
555 ObjectSynchronizer::notifyall(obj, CHECK); | |
556 JVM_END | |
557 | |
558 | |
559 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
560 JVMWrapper("JVM_Clone"); | |
561 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
562 const KlassHandle klass (THREAD, obj->klass()); | |
563 JvmtiVMObjectAllocEventCollector oam; | |
564 | |
565 #ifdef ASSERT | |
566 // Just checking that the cloneable flag is set correct | |
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567 if (obj->is_array()) { |
0 | 568 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
569 } else { | |
570 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 571 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 572 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
573 } | |
574 #endif | |
575 | |
576 // Check if class of obj supports the Cloneable interface. | |
577 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
578 if (!klass->is_cloneable()) { | |
579 ResourceMark rm(THREAD); | |
580 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
581 } | |
582 | |
583 // Make shallow object copy | |
584 const int size = obj->size(); | |
585 oop new_obj = NULL; | |
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586 if (obj->is_array()) { |
0 | 587 const int length = ((arrayOop)obj())->length(); |
588 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
589 } else { | |
590 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
591 } | |
592 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
593 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
594 // be suspended in the middle of copying the pointer and end up with parts | |
595 // of two different pointers in the field. Subsequent dereferences will crash. | |
596 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
597 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
598 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
599 // The same is true of StubRoutines::object_copy and the various oop_copy | |
600 // variants, and of the code generated by the inline_native_clone intrinsic. | |
601 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
602 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
603 (size_t)align_object_size(size) / HeapWordsPerLong); | |
604 // Clear the header | |
605 new_obj->init_mark(); | |
606 | |
607 // Store check (mark entire object and let gc sort it out) | |
608 BarrierSet* bs = Universe::heap()->barrier_set(); | |
609 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
610 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
611 | |
612 // Caution: this involves a java upcall, so the clone should be | |
613 // "gc-robust" by this stage. | |
614 if (klass->has_finalizer()) { | |
615 assert(obj->is_instance(), "should be instanceOop"); | |
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616 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
0 | 617 } |
618 | |
619 return JNIHandles::make_local(env, oop(new_obj)); | |
620 JVM_END | |
621 | |
622 // java.lang.Compiler //////////////////////////////////////////////////// | |
623 | |
624 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
625 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
626 // functions are all silently ignored unless JVM warnings are printed. | |
627 | |
628 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
629 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
630 JVM_END | |
631 | |
632 | |
633 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
634 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
635 return JNI_FALSE; | |
636 JVM_END | |
637 | |
638 | |
639 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
640 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
641 return JNI_FALSE; | |
642 JVM_END | |
643 | |
644 | |
645 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
646 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
647 return JNI_FALSE; | |
648 JVM_END | |
649 | |
650 | |
651 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
652 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
653 return NULL; | |
654 JVM_END | |
655 | |
656 | |
657 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
658 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
659 JVM_END | |
660 | |
661 | |
662 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
663 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
664 JVM_END | |
665 | |
666 | |
667 | |
668 // Error message support ////////////////////////////////////////////////////// | |
669 | |
670 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
671 JVMWrapper("JVM_GetLastErrorString"); | |
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672 return (jint)os::lasterror(buf, len); |
0 | 673 JVM_END |
674 | |
675 | |
676 // java.io.File /////////////////////////////////////////////////////////////// | |
677 | |
678 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
679 JVMWrapper2("JVM_NativePath (%s)", path); | |
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680 return os::native_path(path); |
0 | 681 JVM_END |
682 | |
683 | |
684 // Misc. class handling /////////////////////////////////////////////////////////// | |
685 | |
686 | |
687 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
688 JVMWrapper("JVM_GetCallerClass"); | |
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689 |
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690 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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691 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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692 // temporarily for existing code to use until a replacement API is defined. |
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693 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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694 Klass* k = thread->security_get_caller_class(depth); |
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695 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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696 } |
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697 |
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698 // Getting the class of the caller frame. |
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699 // |
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700 // The call stack at this point looks something like this: |
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701 // |
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702 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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703 // [1] [ @CallerSensitive API.method ] |
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704 // [.] [ (skipped intermediate frames) ] |
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705 // [n] [ caller ] |
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706 vframeStream vfst(thread); |
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707 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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708 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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709 Method* m = vfst.method(); |
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710 assert(m != NULL, "sanity"); |
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711 switch (n) { |
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712 case 0: |
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713 // This must only be called from Reflection.getCallerClass |
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714 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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715 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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716 } |
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717 // fall-through |
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718 case 1: |
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719 // Frame 0 and 1 must be caller sensitive. |
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720 if (!m->caller_sensitive()) { |
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721 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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722 } |
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723 break; |
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724 default: |
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725 if (!m->is_ignored_by_security_stack_walk()) { |
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726 // We have reached the desired frame; return the holder class. |
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727 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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728 } |
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729 break; |
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730 } |
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731 } |
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732 return NULL; |
0 | 733 JVM_END |
734 | |
735 | |
736 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
737 JVMWrapper("JVM_FindPrimitiveClass"); | |
738 oop mirror = NULL; | |
739 BasicType t = name2type(utf); | |
740 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
741 mirror = Universe::java_mirror(t); | |
742 } | |
743 if (mirror == NULL) { | |
744 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
745 } else { | |
746 return (jclass) JNIHandles::make_local(env, mirror); | |
747 } | |
748 JVM_END | |
749 | |
750 | |
751 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
752 JVMWrapper("JVM_ResolveClass"); | |
753 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
754 JVM_END | |
755 | |
878
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756 |
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757 // Returns a class loaded by the bootstrap class loader; or null |
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758 // if not found. ClassNotFoundException is not thrown. |
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759 // |
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760 // Rationale behind JVM_FindClassFromBootLoader |
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761 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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762 // b> because of (a) java.dll has a direct dependecy on the unexported |
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763 // private symbol "_JVM_FindClassFromClassLoader@20". |
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764 // c> the launcher cannot use the private symbol as it dynamically opens |
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765 // the entry point, so if something changes, the launcher will fail |
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766 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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767 // stable exported interface. |
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768 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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769 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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770 // JVM_FindClassFromClassLoader and will not be backward compatible |
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771 // with older JDKs. |
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772 // Thus a public/stable exported entry point is the right solution, |
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773 // public here means public in linker semantics, and is exported only |
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774 // to the JDK, and is not intended to be a public API. |
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775 |
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776 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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777 const char* name)) |
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778 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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|
779 |
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780 // Java libraries should ensure that name is never null... |
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781 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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782 // It's impossible to create this class; the name cannot fit |
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783 // into the constant pool. |
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|
784 return NULL; |
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|
785 } |
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786 |
2177
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787 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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788 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
878
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789 if (k == NULL) { |
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790 return NULL; |
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|
791 } |
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|
792 |
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793 if (TraceClassResolution) { |
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794 trace_class_resolution(k); |
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795 } |
6983 | 796 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
878
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797 JVM_END |
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|
798 |
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799 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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800 jboolean init, jobject loader, |
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|
801 jboolean throwError)) |
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|
802 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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803 throwError ? "error" : "exception"); |
388 | 804 // Java libraries should ensure that name is never null... |
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805 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 806 // It's impossible to create this class; the name cannot fit |
807 // into the constant pool. | |
808 if (throwError) { | |
809 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
810 } else { | |
811 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
812 } | |
813 } | |
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814 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 815 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
816 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
817 Handle(), throwError, THREAD); | |
818 | |
819 if (TraceClassResolution && result != NULL) { | |
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820 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
388 | 821 } |
822 return result; | |
0 | 823 JVM_END |
824 | |
825 | |
826 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
827 jboolean init, jclass from)) | |
828 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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829 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 830 // It's impossible to create this class; the name cannot fit |
831 // into the constant pool. | |
832 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
833 } | |
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834 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 835 oop from_class_oop = JNIHandles::resolve(from); |
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836 Klass* from_class = (from_class_oop == NULL) |
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837 ? (Klass*)NULL |
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838 : java_lang_Class::as_Klass(from_class_oop); |
0 | 839 oop class_loader = NULL; |
840 oop protection_domain = NULL; | |
841 if (from_class != NULL) { | |
6983 | 842 class_loader = from_class->class_loader(); |
843 protection_domain = from_class->protection_domain(); | |
0 | 844 } |
845 Handle h_loader(THREAD, class_loader); | |
846 Handle h_prot (THREAD, protection_domain); | |
847 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
848 h_prot, true, thread); | |
849 | |
850 if (TraceClassResolution && result != NULL) { | |
851 // this function is generally only used for class loading during verification. | |
852 ResourceMark rm; | |
853 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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854 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
6983 | 855 const char * from_name = from_class->external_name(); |
0 | 856 |
857 oop mirror = JNIHandles::resolve_non_null(result); | |
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858 Klass* to_class = java_lang_Class::as_Klass(mirror); |
6983 | 859 const char * to = to_class->external_name(); |
0 | 860 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
861 } | |
862 | |
863 return result; | |
864 JVM_END | |
865 | |
866 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
867 if (loader.is_null()) { | |
868 return; | |
869 } | |
870 | |
871 // check whether the current caller thread holds the lock or not. | |
872 // If not, increment the corresponding counter | |
873 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
874 ObjectSynchronizer::owner_self) { | |
875 counter->inc(); | |
876 } | |
877 } | |
878 | |
879 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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880 // and JVM_DefineClassWithSourceCond() |
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881 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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882 jobject loader, const jbyte *buf, |
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883 jsize len, jobject pd, const char *source, |
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884 jboolean verify, TRAPS) { |
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|
885 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 886 |
875
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887 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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888 JavaThread* jt = (JavaThread*) THREAD; |
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889 |
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890 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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891 ClassLoader::perf_define_appclass_selftime(), |
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|
892 ClassLoader::perf_define_appclasses(), |
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893 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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894 jt->get_thread_stat()->perf_timers_addr(), |
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895 PerfClassTraceTime::DEFINE_CLASS); |
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896 |
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897 if (UsePerfData) { |
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898 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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|
899 } |
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900 |
0 | 901 // Since exceptions can be thrown, class initialization can take place |
902 // if name is NULL no check for class name in .class stream has to be made. | |
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903 TempNewSymbol class_name = NULL; |
0 | 904 if (name != NULL) { |
905 const int str_len = (int)strlen(name); | |
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906 if (str_len > Symbol::max_length()) { |
0 | 907 // It's impossible to create this class; the name cannot fit |
908 // into the constant pool. | |
909 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
910 } | |
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911 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 912 } |
913 | |
914 ResourceMark rm(THREAD); | |
915 ClassFileStream st((u1*) buf, len, (char *)source); | |
916 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
917 if (UsePerfData) { | |
918 is_lock_held_by_thread(class_loader, | |
919 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
920 THREAD); | |
921 } | |
922 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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923 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
0 | 924 protection_domain, &st, |
973
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925 verify != 0, |
0 | 926 CHECK_NULL); |
927 | |
928 if (TraceClassResolution && k != NULL) { | |
929 trace_class_resolution(k); | |
930 } | |
931 | |
6983 | 932 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 933 } |
934 | |
935 | |
936 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
937 JVMWrapper2("JVM_DefineClass %s", name); | |
938 | |
973
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939 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 940 JVM_END |
941 | |
942 | |
943 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
944 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
945 | |
973
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946 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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947 JVM_END |
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948 |
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949 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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950 jobject loader, const jbyte *buf, |
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951 jsize len, jobject pd, |
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952 const char *source, jboolean verify)) |
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953 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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954 |
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955 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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956 JVM_END |
0 | 957 |
958 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
959 JVMWrapper("JVM_FindLoadedClass"); | |
960 ResourceMark rm(THREAD); | |
961 | |
962 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
963 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
964 | |
965 const char* str = java_lang_String::as_utf8_string(string()); | |
966 // Sanity check, don't expect null | |
967 if (str == NULL) return NULL; | |
968 | |
969 const int str_len = (int)strlen(str); | |
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970 if (str_len > Symbol::max_length()) { |
0 | 971 // It's impossible to create this class; the name cannot fit |
972 // into the constant pool. | |
973 return NULL; | |
974 } | |
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975 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 976 |
977 // Security Note: | |
978 // The Java level wrapper will perform the necessary security check allowing | |
979 // us to pass the NULL as the initiating class loader. | |
980 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
981 if (UsePerfData) { | |
982 is_lock_held_by_thread(h_loader, | |
983 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
984 THREAD); | |
985 } | |
986 | |
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987 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
0 | 988 h_loader, |
989 Handle(), | |
990 CHECK_NULL); | |
991 | |
992 return (k == NULL) ? NULL : | |
6983 | 993 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
0 | 994 JVM_END |
995 | |
996 | |
997 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
998 | |
999 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
1000 assert (cls != NULL, "illegal class"); | |
1001 JVMWrapper("JVM_GetClassName"); | |
1002 JvmtiVMObjectAllocEventCollector oam; | |
1003 ResourceMark rm(THREAD); | |
1004 const char* name; | |
1005 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1006 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
1007 } else { | |
1008 // Consider caching interned string in Klass | |
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1009 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
0 | 1010 assert(k->is_klass(), "just checking"); |
6983 | 1011 name = k->external_name(); |
0 | 1012 } |
1013 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
1014 return (jstring) JNIHandles::make_local(env, result); | |
1015 JVM_END | |
1016 | |
1017 | |
1018 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
1019 JVMWrapper("JVM_GetClassInterfaces"); | |
1020 JvmtiVMObjectAllocEventCollector oam; | |
1021 oop mirror = JNIHandles::resolve_non_null(cls); | |
1022 | |
1023 // Special handling for primitive objects | |
1024 if (java_lang_Class::is_primitive(mirror)) { | |
1025 // Primitive objects does not have any interfaces | |
1142 | 1026 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1027 return (jobjectArray) JNIHandles::make_local(env, r); |
1028 } | |
1029 | |
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1030 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
0 | 1031 // Figure size of result array |
1032 int size; | |
1033 if (klass->oop_is_instance()) { | |
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1034 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
0 | 1035 } else { |
1036 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
1037 size = 2; | |
1038 } | |
1039 | |
1040 // Allocate result array | |
1142 | 1041 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 1042 objArrayHandle result (THREAD, r); |
1043 // Fill in result | |
1044 if (klass->oop_is_instance()) { | |
1045 // Regular instance klass, fill in all local interfaces | |
1046 for (int index = 0; index < size; index++) { | |
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1047 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
6983 | 1048 result->obj_at_put(index, k->java_mirror()); |
0 | 1049 } |
1050 } else { | |
1051 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
6983 | 1052 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
1053 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
0 | 1054 } |
1055 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1056 JVM_END | |
1057 | |
1058 | |
1059 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
1060 JVMWrapper("JVM_GetClassLoader"); | |
1061 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1062 return NULL; | |
1063 } | |
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1064 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1065 oop loader = k->class_loader(); |
0 | 1066 return JNIHandles::make_local(env, loader); |
1067 JVM_END | |
1068 | |
1069 | |
1070 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1071 JVMWrapper("JVM_IsInterface"); | |
1072 oop mirror = JNIHandles::resolve_non_null(cls); | |
1073 if (java_lang_Class::is_primitive(mirror)) { | |
1074 return JNI_FALSE; | |
1075 } | |
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1076 Klass* k = java_lang_Class::as_Klass(mirror); |
6983 | 1077 jboolean result = k->is_interface(); |
1078 assert(!result || k->oop_is_instance(), | |
0 | 1079 "all interfaces are instance types"); |
1080 // The compiler intrinsic for isInterface tests the | |
1081 // Klass::_access_flags bits in the same way. | |
1082 return result; | |
1083 JVM_END | |
1084 | |
1085 | |
1086 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1087 JVMWrapper("JVM_GetClassSigners"); | |
1088 JvmtiVMObjectAllocEventCollector oam; | |
1089 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1090 // There are no signers for primitive types | |
1091 return NULL; | |
1092 } | |
1093 | |
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1094 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
0 | 1095 |
1096 // If there are no signers set in the class, or if the class | |
1097 // is an array, return NULL. | |
1098 if (signers == NULL) return NULL; | |
1099 | |
1100 // copy of the signers array | |
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1101 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
0 | 1102 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
1103 for (int index = 0; index < signers->length(); index++) { | |
1104 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1105 } | |
1106 | |
1107 // return the copy | |
1108 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1109 JVM_END | |
1110 | |
1111 | |
1112 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1113 JVMWrapper("JVM_SetClassSigners"); | |
1114 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1115 // This call is ignored for primitive types and arrays. | |
1116 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1117 // be called with an array. Only the bootstrap loader creates arrays. | |
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1118 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1119 if (k->oop_is_instance()) { |
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1120 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
0 | 1121 } |
1122 } | |
1123 JVM_END | |
1124 | |
1125 | |
1126 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1127 JVMWrapper("JVM_GetProtectionDomain"); | |
1128 if (JNIHandles::resolve(cls) == NULL) { | |
1129 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1130 } | |
1131 | |
1132 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1133 // Primitive types does not have a protection domain. | |
1134 return NULL; | |
1135 } | |
1136 | |
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1137 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1138 return (jobject) JNIHandles::make_local(env, pd); |
0 | 1139 JVM_END |
1140 | |
11010 | 1141 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
1142 // If there is a security manager and protection domain, check the access | |
1143 // in the protection domain, otherwise it is authorized. | |
1144 if (java_lang_System::has_security_manager()) { | |
1145 | |
1146 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
1147 // this context to revert to older behavior. | |
1148 // In this case the isAuthorized field in AccessControlContext is also not | |
1149 // present. | |
1150 if (Universe::protection_domain_implies_method() == NULL) { | |
1151 return true; | |
1152 } | |
1153 | |
1154 // Whitelist certain access control contexts | |
1155 if (java_security_AccessControlContext::is_authorized(context)) { | |
1156 return true; | |
1157 } | |
1158 | |
1159 oop prot = klass->protection_domain(); | |
1160 if (prot != NULL) { | |
1161 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
1162 // in the new wrapper. | |
1163 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
1164 Handle h_prot(THREAD, prot); | |
1165 JavaValue result(T_BOOLEAN); | |
1166 JavaCallArguments args(h_prot); | |
1167 JavaCalls::call(&result, m, &args, CHECK_false); | |
1168 return (result.get_jboolean() != 0); | |
1169 } | |
1170 } | |
1171 return true; | |
1172 } | |
1173 | |
1174 // Create an AccessControlContext with a protection domain with null codesource | |
1175 // and null permissions - which gives no permissions. | |
1176 oop create_dummy_access_control_context(TRAPS) { | |
1177 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
1178 // new ProtectionDomain(null,null); | |
1179 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
1180 Handle null_pd(THREAD, null_protection_domain); | |
1181 | |
1182 // new ProtectionDomain[] {pd}; | |
1183 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
1184 context->obj_at_put(0, null_pd()); | |
1185 | |
1186 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
1187 objArrayHandle h_context(THREAD, context); | |
1188 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
1189 return result; | |
1190 } | |
0 | 1191 |
1192 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1193 JVMWrapper("JVM_DoPrivileged"); | |
1194 | |
1195 if (action == NULL) { | |
1196 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1197 } | |
1198 | |
11010 | 1199 // Compute the frame initiating the do privileged operation and setup the privileged stack |
1200 vframeStream vfst(thread); | |
1201 vfst.security_get_caller_frame(1); | |
1202 | |
1203 if (vfst.at_end()) { | |
1204 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
1205 } | |
1206 | |
1207 Method* method = vfst.method(); | |
1208 instanceKlassHandle klass (THREAD, method->method_holder()); | |
1209 | |
1210 // Check that action object understands "Object run()" | |
1211 Handle h_context; | |
1212 if (context != NULL) { | |
1213 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
1214 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
1215 if (!authorized) { | |
1216 // Create an unprivileged access control object and call it's run function | |
1217 // instead. | |
1218 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
1219 h_context = Handle(THREAD, noprivs); | |
1220 } | |
1221 } | |
0 | 1222 |
1223 // Check that action object understands "Object run()" | |
1224 Handle object (THREAD, JNIHandles::resolve(action)); | |
1225 | |
1226 // get run() method | |
6983 | 1227 Method* m_oop = object->klass()->uncached_lookup_method( |
0 | 1228 vmSymbols::run_method_name(), |
1229 vmSymbols::void_object_signature()); | |
1230 methodHandle m (THREAD, m_oop); | |
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1231 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
0 | 1232 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
1233 } | |
1234 | |
11010 | 1235 // Stack allocated list of privileged stack elements |
1236 PrivilegedElement pi; | |
0 | 1237 if (!vfst.at_end()) { |
11010 | 1238 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
0 | 1239 thread->set_privileged_stack_top(&pi); |
1240 } | |
1241 | |
1242 | |
1243 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1244 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1245 Handle pending_exception; | |
1246 JavaValue result(T_OBJECT); | |
1247 JavaCallArguments args(object); | |
1248 JavaCalls::call(&result, m, &args, THREAD); | |
1249 | |
1250 // done with action, remove ourselves from the list | |
1251 if (!vfst.at_end()) { | |
1252 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1253 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1254 } | |
1255 | |
1256 if (HAS_PENDING_EXCEPTION) { | |
1257 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1258 CLEAR_PENDING_EXCEPTION; | |
14909 | 1259 |
1142 | 1260 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1261 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1262 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1263 JavaCallArguments args(pending_exception); | |
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1264 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1265 vmSymbols::exception_void_signature(), |
0 | 1266 &args); |
1267 } | |
1268 } | |
1269 | |
1270 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1271 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1272 JVM_END | |
1273 | |
1274 | |
1275 // Returns the inherited_access_control_context field of the running thread. | |
1276 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1277 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1278 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1279 return JNIHandles::make_local(env, result); | |
1280 JVM_END | |
1281 | |
1282 class RegisterArrayForGC { | |
1283 private: | |
1284 JavaThread *_thread; | |
1285 public: | |
1286 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1287 _thread = thread; | |
1288 _thread->register_array_for_gc(array); | |
1289 } | |
1290 | |
1291 ~RegisterArrayForGC() { | |
1292 _thread->register_array_for_gc(NULL); | |
1293 } | |
1294 }; | |
1295 | |
1296 | |
1297 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1298 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1299 if (!UsePrivilegedStack) return NULL; | |
1300 | |
1301 ResourceMark rm(THREAD); | |
1302 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1303 JvmtiVMObjectAllocEventCollector oam; | |
1304 | |
1305 // count the protection domains on the execution stack. We collapse | |
1306 // duplicate consecutive protection domains into a single one, as | |
1307 // well as stopping when we hit a privileged frame. | |
1308 | |
1309 // Use vframeStream to iterate through Java frames | |
1310 vframeStream vfst(thread); | |
1311 | |
1312 oop previous_protection_domain = NULL; | |
1313 Handle privileged_context(thread, NULL); | |
1314 bool is_privileged = false; | |
1315 oop protection_domain = NULL; | |
1316 | |
1317 for(; !vfst.at_end(); vfst.next()) { | |
1318 // get method of frame | |
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1319 Method* method = vfst.method(); |
0 | 1320 intptr_t* frame_id = vfst.frame_id(); |
1321 | |
1322 // check the privileged frames to see if we have a match | |
1323 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1324 // this frame is privileged | |
1325 is_privileged = true; | |
1326 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1327 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1328 } else { | |
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1329 protection_domain = method->method_holder()->protection_domain(); |
0 | 1330 } |
1331 | |
1332 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1333 local_array->push(protection_domain); | |
1334 previous_protection_domain = protection_domain; | |
1335 } | |
1336 | |
1337 if (is_privileged) break; | |
1338 } | |
1339 | |
1340 | |
1341 // either all the domains on the stack were system domains, or | |
1342 // we had a privileged system domain | |
1343 if (local_array->is_empty()) { | |
1344 if (is_privileged && privileged_context.is_null()) return NULL; | |
1345 | |
1346 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1347 return JNIHandles::make_local(env, result); | |
1348 } | |
1349 | |
1350 // the resource area must be registered in case of a gc | |
1351 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1352 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1353 local_array->length(), CHECK_NULL); |
1354 objArrayHandle h_context(thread, context); | |
1355 for (int index = 0; index < local_array->length(); index++) { | |
1356 h_context->obj_at_put(index, local_array->at(index)); | |
1357 } | |
1358 | |
1359 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1360 | |
1361 return JNIHandles::make_local(env, result); | |
1362 JVM_END | |
1363 | |
1364 | |
1365 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1366 JVMWrapper("JVM_IsArrayClass"); | |
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1367 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1368 return (k != NULL) && k->oop_is_array() ? true : false; |
0 | 1369 JVM_END |
1370 | |
1371 | |
1372 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1373 JVMWrapper("JVM_IsPrimitiveClass"); | |
1374 oop mirror = JNIHandles::resolve_non_null(cls); | |
1375 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1376 JVM_END | |
1377 | |
1378 | |
1379 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1380 JVMWrapper("JVM_GetComponentType"); | |
1381 oop mirror = JNIHandles::resolve_non_null(cls); | |
1382 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1383 return (jclass) JNIHandles::make_local(env, result); | |
1384 JVM_END | |
1385 | |
1386 | |
1387 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1388 JVMWrapper("JVM_GetClassModifiers"); | |
1389 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1390 // Primitive type | |
1391 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1392 } | |
1393 | |
6983 | 1394 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1395 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
1396 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1397 return k->modifier_flags(); | |
1398 JVM_END | |
1399 | |
1400 | |
1401 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1402 | |
1403 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1404 JvmtiVMObjectAllocEventCollector oam; | |
1405 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1406 // of an InstanceKlass |
0 | 1407 |
1408 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1409 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
1142 | 1410 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1411 return (jobjectArray)JNIHandles::make_local(env, result); |
1412 } | |
1413 | |
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1414 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1415 InnerClassesIterator iter(k); |
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1416 |
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1417 if (iter.length() == 0) { |
0 | 1418 // Neither an inner nor outer class |
1142 | 1419 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1420 return (jobjectArray)JNIHandles::make_local(env, result); |
1421 } | |
1422 | |
1423 // find inner class info | |
1424 constantPoolHandle cp(thread, k->constants()); | |
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1425 int length = iter.length(); |
0 | 1426 |
1427 // Allocate temp. result array | |
1142 | 1428 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1429 objArrayHandle result (THREAD, r); |
1430 int members = 0; | |
1431 | |
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1432 for (; !iter.done(); iter.next()) { |
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1433 int ioff = iter.inner_class_info_index(); |
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1434 int ooff = iter.outer_class_info_index(); |
0 | 1435 |
1436 if (ioff != 0 && ooff != 0) { | |
1437 // Check to see if the name matches the class we're looking for | |
1438 // before attempting to find the class. | |
1439 if (cp->klass_name_at_matches(k, ooff)) { | |
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1440 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
0 | 1441 if (outer_klass == k()) { |
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1442 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
0 | 1443 instanceKlassHandle inner_klass (THREAD, ik); |
1444 | |
1445 // Throws an exception if outer klass has not declared k as | |
1446 // an inner klass | |
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1447 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1448 |
1449 result->obj_at_put(members, inner_klass->java_mirror()); | |
1450 members++; | |
1451 } | |
1452 } | |
1453 } | |
1454 } | |
1455 | |
1456 if (members != length) { | |
1457 // Return array of right length | |
1142 | 1458 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1459 for(int i = 0; i < members; i++) { |
1460 res->obj_at_put(i, result->obj_at(i)); | |
1461 } | |
1462 return (jobjectArray)JNIHandles::make_local(env, res); | |
1463 } | |
1464 | |
1465 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1466 JVM_END | |
1467 | |
1468 | |
1469 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1470 { |
0 | 1471 // ofClass is a reference to a java_lang_Class object. |
1472 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1473 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
0 | 1474 return NULL; |
1475 } | |
1476 | |
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1477 bool inner_is_member = false; |
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1478 Klass* outer_klass |
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1479 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1480 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1481 if (outer_klass == NULL) return NULL; // already a top-level class |
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1482 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
6983 | 1483 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1484 } |
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1485 JVM_END |
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1486 |
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1487 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1488 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1489 bool* inner_is_member, |
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1490 TRAPS) { |
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1491 Thread* thread = THREAD; |
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1492 InnerClassesIterator iter(k); |
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1493 if (iter.length() == 0) { |
0 | 1494 // No inner class info => no declaring class |
1495 return NULL; | |
1496 } | |
1497 | |
1498 constantPoolHandle i_cp(thread, k->constants()); | |
1499 | |
1500 bool found = false; | |
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1501 Klass* ok; |
0 | 1502 instanceKlassHandle outer_klass; |
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1503 *inner_is_member = false; |
0 | 1504 |
1505 // Find inner_klass attribute | |
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1506 for (; !iter.done() && !found; iter.next()) { |
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1507 int ioff = iter.inner_class_info_index(); |
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1508 int ooff = iter.outer_class_info_index(); |
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1509 int noff = iter.inner_name_index(); |
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1510 if (ioff != 0) { |
0 | 1511 // Check to see if the name matches the class we're looking for |
1512 // before attempting to find the class. | |
1513 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1514 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1515 found = (k() == inner_klass); |
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1516 if (found && ooff != 0) { |
0 | 1517 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1518 outer_klass = instanceKlassHandle(thread, ok); | |
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1519 *inner_is_member = true; |
0 | 1520 } |
1521 } | |
1522 } | |
1523 } | |
1524 | |
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1525 if (found && outer_klass.is_null()) { |
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1526 // It may be anonymous; try for that. |
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1527 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1528 if (encl_method_class_idx != 0) { |
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1529 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1530 outer_klass = instanceKlassHandle(thread, ok); |
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1531 *inner_is_member = false; |
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1532 } |
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1533 } |
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1534 |
0 | 1535 // If no inner class attribute found for this class. |
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1536 if (outer_klass.is_null()) return NULL; |
0 | 1537 |
1538 // Throws an exception if outer klass has not declared k as an inner klass | |
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1539 // We need evidence that each klass knows about the other, or else |
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1540 // the system could allow a spoof of an inner class to gain access rights. |
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1541 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1542 return outer_klass(); |
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1543 } |
0 | 1544 |
1545 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1546 assert (cls != NULL, "illegal class"); | |
1547 JVMWrapper("JVM_GetClassSignature"); | |
1548 JvmtiVMObjectAllocEventCollector oam; | |
1549 ResourceMark rm(THREAD); | |
1550 // Return null for arrays and primatives | |
1551 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1552 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1553 if (k->oop_is_instance()) { |
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1554 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1555 if (sym == NULL) return NULL; |
0 | 1556 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1557 return (jstring) JNIHandles::make_local(env, str()); | |
1558 } | |
1559 } | |
1560 return NULL; | |
1561 JVM_END | |
1562 | |
1563 | |
1564 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1565 assert (cls != NULL, "illegal class"); | |
1566 JVMWrapper("JVM_GetClassAnnotations"); | |
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1567 |
0 | 1568 // Return null for arrays and primitives |
1569 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1570 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
6983 | 1571 if (k->oop_is_instance()) { |
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1572 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1573 return (jbyteArray) JNIHandles::make_local(env, a); |
0 | 1574 } |
1575 } | |
1576 return NULL; | |
1577 JVM_END | |
1578 | |
1579 | |
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1580 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
0 | 1581 // some of this code was adapted from from jni_FromReflectedField |
1582 | |
1583 oop reflected = JNIHandles::resolve_non_null(field); | |
1584 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1585 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1586 int slot = java_lang_reflect_Field::slot(reflected); |
1587 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1588 | |
1589 KlassHandle kh(THREAD, k); | |
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1590 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
0 | 1591 |
1592 if (modifiers & JVM_ACC_STATIC) { | |
1593 // for static fields we only look in the current class | |
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1594 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
0 | 1595 assert(false, "cannot find static field"); |
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1596 return false; |
0 | 1597 } |
1598 } else { | |
1599 // for instance fields we start with the current class and work | |
1600 // our way up through the superclass chain | |
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1601 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
0 | 1602 assert(false, "cannot find instance field"); |
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1603 return false; |
0 | 1604 } |
1605 } | |
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1606 return true; |
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|
1607 } |
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1608 |
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1609 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
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1610 // field is a handle to a java.lang.reflect.Field object |
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1611 assert(field != NULL, "illegal field"); |
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1612 JVMWrapper("JVM_GetFieldAnnotations"); |
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1613 |
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1614 fieldDescriptor fd; |
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1615 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1616 if (!gotFd) { |
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1617 return NULL; |
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1618 } |
0 | 1619 |
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1620 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
0 | 1621 JVM_END |
1622 | |
1623 | |
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1624 static Method* jvm_get_method_common(jobject method) { |
0 | 1625 // some of this code was adapted from from jni_FromReflectedMethod |
1626 | |
1627 oop reflected = JNIHandles::resolve_non_null(method); | |
1628 oop mirror = NULL; | |
1629 int slot = 0; | |
1630 | |
1142 | 1631 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1632 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1633 slot = java_lang_reflect_Constructor::slot(reflected); | |
1634 } else { | |
1142 | 1635 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1636 "wrong type"); |
1637 mirror = java_lang_reflect_Method::clazz(reflected); | |
1638 slot = java_lang_reflect_Method::slot(reflected); | |
1639 } | |
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1640 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 1641 |
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1642 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
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1643 assert(m != NULL, "cannot find method"); |
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1644 return m; // caller has to deal with NULL in product mode |
0 | 1645 } |
1646 | |
1647 | |
1648 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1649 JVMWrapper("JVM_GetMethodAnnotations"); | |
1650 | |
1651 // method is a handle to a java.lang.reflect.Method object | |
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1652 Method* m = jvm_get_method_common(method); |
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1653 if (m == NULL) { |
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1654 return NULL; |
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|
1655 } |
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1656 |
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1657 return (jbyteArray) JNIHandles::make_local(env, |
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1658 Annotations::make_java_array(m->annotations(), THREAD)); |
0 | 1659 JVM_END |
1660 | |
1661 | |
1662 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1663 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1664 | |
1665 // method is a handle to a java.lang.reflect.Method object | |
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1666 Method* m = jvm_get_method_common(method); |
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1667 if (m == NULL) { |
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|
1668 return NULL; |
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|
1669 } |
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|
1670 |
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1671 return (jbyteArray) JNIHandles::make_local(env, |
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1672 Annotations::make_java_array(m->annotation_default(), THREAD)); |
0 | 1673 JVM_END |
1674 | |
1675 | |
1676 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1677 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1678 | |
1679 // method is a handle to a java.lang.reflect.Method object | |
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1680 Method* m = jvm_get_method_common(method); |
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1681 if (m == NULL) { |
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|
1682 return NULL; |
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|
1683 } |
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|
1684 |
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1685 return (jbyteArray) JNIHandles::make_local(env, |
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1686 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
0 | 1687 JVM_END |
1688 | |
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1689 /* Type use annotations support (JDK 1.8) */ |
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1690 |
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1691 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1692 assert (cls != NULL, "illegal class"); |
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|
1693 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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|
1694 ResourceMark rm(THREAD); |
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|
1695 // Return null for arrays and primitives |
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1696 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1697 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1698 if (k->oop_is_instance()) { |
8031 | 1699 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
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1700 if (type_annotations != NULL) { |
8031 | 1701 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1702 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1703 } |
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1704 } |
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|
1705 } |
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|
1706 return NULL; |
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1707 JVM_END |
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1708 |
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1709 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
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1710 assert (method != NULL, "illegal method"); |
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|
1711 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
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|
1712 |
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1713 // method is a handle to a java.lang.reflect.Method object |
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1714 Method* m = jvm_get_method_common(method); |
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1715 if (m == NULL) { |
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|
1716 return NULL; |
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|
1717 } |
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1718 |
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1719 AnnotationArray* type_annotations = m->type_annotations(); |
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1720 if (type_annotations != NULL) { |
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1721 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
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1722 return (jbyteArray) JNIHandles::make_local(env, a); |
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|
1723 } |
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|
1724 |
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1725 return NULL; |
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|
1726 JVM_END |
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|
1727 |
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|
1728 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
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1729 assert (field != NULL, "illegal field"); |
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|
1730 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
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|
1731 |
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|
1732 fieldDescriptor fd; |
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1733 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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|
1734 if (!gotFd) { |
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|
1735 return NULL; |
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|
1736 } |
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|
1737 |
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1738 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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|
1739 JVM_END |
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|
1740 |
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1741 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1742 if (!cp->is_within_bounds(index)) { |
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1743 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1744 } |
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1745 } |
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|
1746 |
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1747 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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|
1748 { |
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|
1749 JVMWrapper("JVM_GetMethodParameters"); |
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|
1750 // method is a handle to a java.lang.reflect.Method object |
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1751 Method* method_ptr = jvm_get_method_common(method); |
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|
1752 methodHandle mh (THREAD, method_ptr); |
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1753 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1754 const int num_params = mh->method_parameters_length(); |
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1755 |
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1756 if (0 != num_params) { |
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1757 // make sure all the symbols are properly formatted |
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1758 for (int i = 0; i < num_params; i++) { |
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1759 MethodParametersElement* params = mh->method_parameters_start(); |
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1760 int index = params[i].name_cp_index; |
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1761 bounds_check(mh->constants(), index, CHECK_NULL); |
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1762 |
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1763 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1764 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1765 "Wrong type at constant pool index"); |
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1766 } |
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1767 |
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1768 } |
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1769 |
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1770 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1771 objArrayHandle result (THREAD, result_oop); |
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1772 |
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1773 for (int i = 0; i < num_params; i++) { |
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1774 MethodParametersElement* params = mh->method_parameters_start(); |
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1775 // For a 0 index, give a NULL symbol |
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1776 Symbol* sym = 0 != params[i].name_cp_index ? |
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1777 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1778 int flags = params[i].flags; |
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1779 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1780 flags, CHECK_NULL); |
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1781 result->obj_at_put(i, param); |
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1782 } |
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1783 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1784 } else { |
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1785 return (jobjectArray)NULL; |
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1786 } |
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1787 } |
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1788 JVM_END |
0 | 1789 |
1790 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1791 | |
1792 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1793 { | |
1794 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1795 JvmtiVMObjectAllocEventCollector oam; | |
1796 | |
1797 // Exclude primitive types and array types | |
1798 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
6983 | 1799 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1800 // Return empty array |
1142 | 1801 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1802 return (jobjectArray) JNIHandles::make_local(env, res); |
1803 } | |
1804 | |
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1805 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1806 constantPoolHandle cp(THREAD, k->constants()); |
1807 | |
1808 // Ensure class is linked | |
1809 k->link_class(CHECK_NULL); | |
1810 | |
1811 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1812 bool skip_backtrace = false; | |
1813 | |
1814 // Allocate result | |
1815 int num_fields; | |
1816 | |
1817 if (publicOnly) { | |
1818 num_fields = 0; | |
3938 | 1819 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1820 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1821 } |
1822 } else { | |
3938 | 1823 num_fields = k->java_fields_count(); |
0 | 1824 |
1142 | 1825 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1826 num_fields--; |
1827 skip_backtrace = true; | |
1828 } | |
1829 } | |
1830 | |
1142 | 1831 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1832 objArrayHandle result (THREAD, r); |
1833 | |
1834 int out_idx = 0; | |
1835 fieldDescriptor fd; | |
3938 | 1836 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1837 if (skip_backtrace) { |
1838 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1839 int offset = fs.offset(); |
0 | 1840 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1841 } | |
1842 | |
3938 | 1843 if (!publicOnly || fs.access_flags().is_public()) { |
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1844 fd.reinitialize(k(), fs.index()); |
0 | 1845 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1846 result->obj_at_put(out_idx, field); | |
1847 ++out_idx; | |
1848 } | |
1849 } | |
1850 assert(out_idx == num_fields, "just checking"); | |
1851 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1852 } | |
1853 JVM_END | |
1854 | |
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1855 static bool select_method(methodHandle method, bool want_constructor) { |
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1856 if (want_constructor) { |
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1857 return (method->is_initializer() && !method->is_static()); |
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1858 } else { |
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1859 return (!method->is_initializer() && !method->is_overpass()); |
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1860 } |
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1861 } |
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1862 |
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1863 static jobjectArray get_class_declared_methods_helper( |
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1864 JNIEnv *env, |
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1865 jclass ofClass, jboolean publicOnly, |
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1866 bool want_constructor, |
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1867 Klass* klass, TRAPS) { |
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1868 |
0 | 1869 JvmtiVMObjectAllocEventCollector oam; |
1870 | |
1871 // Exclude primitive types and array types | |
1872 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
6983 | 1873 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
0 | 1874 // Return empty array |
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1875 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
0 | 1876 return (jobjectArray) JNIHandles::make_local(env, res); |
1877 } | |
1878 | |
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1879 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
0 | 1880 |
1881 // Ensure class is linked | |
1882 k->link_class(CHECK_NULL); | |
1883 | |
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1884 Array<Method*>* methods = k->methods(); |
0 | 1885 int methods_length = methods->length(); |
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1886 |
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1887 // Save original method_idnum in case of redefinition, which can change |
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1888 // the idnum of obsolete methods. The new method will have the same idnum |
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1889 // but if we refresh the methods array, the counts will be wrong. |
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1890 ResourceMark rm(THREAD); |
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1891 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
0 | 1892 int num_methods = 0; |
1893 | |
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1894 for (int i = 0; i < methods_length; i++) { |
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1895 methodHandle method(THREAD, methods->at(i)); |
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1896 if (select_method(method, want_constructor)) { |
0 | 1897 if (!publicOnly || method->is_public()) { |
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1898 idnums->push(method->method_idnum()); |
0 | 1899 ++num_methods; |
1900 } | |
1901 } | |
1902 } | |
1903 | |
1904 // Allocate result | |
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1905 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
0 | 1906 objArrayHandle result (THREAD, r); |
1907 | |
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1908 // Now just put the methods that we selected above, but go by their idnum |
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1909 // in case of redefinition. The methods can be redefined at any safepoint, |
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1910 // so above when allocating the oop array and below when creating reflect |
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1911 // objects. |
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1912 for (int i = 0; i < num_methods; i++) { |
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1913 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1914 if (method.is_null()) { |
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1915 // Method may have been deleted and seems this API can handle null |
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1916 // Otherwise should probably put a method that throws NSME |
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1917 result->obj_at_put(i, NULL); |
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1918 } else { |
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1919 oop m; |
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1920 if (want_constructor) { |
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1921 m = Reflection::new_constructor(method, CHECK_NULL); |
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1922 } else { |
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1923 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
0 | 1924 } |
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1925 result->obj_at_put(i, m); |
0 | 1926 } |
1927 } | |
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1928 |
0 | 1929 return (jobjectArray) JNIHandles::make_local(env, result()); |
1930 } | |
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1931 |
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1932 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1933 { |
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1934 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1935 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1936 /*want_constructor*/ false, |
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1937 SystemDictionary::reflect_Method_klass(), THREAD); |
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1938 } |
0 | 1939 JVM_END |
1940 | |
1941 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1942 { | |
1943 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1944 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1945 /*want_constructor*/ true, |
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1946 SystemDictionary::reflect_Constructor_klass(), THREAD); |
0 | 1947 } |
1948 JVM_END | |
1949 | |
1950 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1951 { | |
1952 JVMWrapper("JVM_GetClassAccessFlags"); | |
1953 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1954 // Primitive type | |
1955 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1956 } | |
1957 | |
6983 | 1958 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 1959 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
1960 } | |
1961 JVM_END | |
1962 | |
1963 | |
1964 // Constant pool access ////////////////////////////////////////////////////////// | |
1965 | |
1966 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1967 { | |
1968 JVMWrapper("JVM_GetClassConstantPool"); | |
1969 JvmtiVMObjectAllocEventCollector oam; | |
1970 | |
1971 // Return null for primitives and arrays | |
1972 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1973 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
6983 | 1974 if (k->oop_is_instance()) { |
0 | 1975 instanceKlassHandle k_h(THREAD, k); |
1976 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1977 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
0 | 1978 return JNIHandles::make_local(jcp()); |
1979 } | |
1980 } | |
1981 return NULL; | |
1982 } | |
1983 JVM_END | |
1984 | |
1985 | |
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1986 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
0 | 1987 { |
1988 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1989 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1990 return cp->length(); |
1991 } | |
1992 JVM_END | |
1993 | |
1994 | |
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1995 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 1996 { |
1997 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1998 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 1999 bounds_check(cp, index, CHECK_NULL); |
2000 constantTag tag = cp->tag_at(index); | |
2001 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2002 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2003 } | |
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2004 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2005 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2006 } |
2007 JVM_END | |
2008 | |
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2009 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2010 { |
2011 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2012 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2013 bounds_check(cp, index, CHECK_NULL); |
2014 constantTag tag = cp->tag_at(index); | |
2015 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
2016 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2017 } | |
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2018 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
0 | 2019 if (k == NULL) return NULL; |
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2020 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 2021 } |
2022 JVM_END | |
2023 | |
2024 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2025 constantTag tag = cp->tag_at(index); | |
2026 if (!tag.is_method() && !tag.is_interface_method()) { | |
2027 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2028 } | |
2029 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2030 Klass* k_o; |
0 | 2031 if (force_resolution) { |
2032 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2033 } else { | |
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2034 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2035 if (k_o == NULL) return NULL; |
2036 } | |
2037 instanceKlassHandle k(THREAD, k_o); | |
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2038 Symbol* name = cp->uncached_name_ref_at(index); |
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2039 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2040 methodHandle m (THREAD, k->find_method(name, sig)); |
2041 if (m.is_null()) { | |
2042 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
2043 } | |
2044 oop method; | |
2045 if (!m->is_initializer() || m->is_static()) { | |
2046 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
2047 } else { | |
2048 method = Reflection::new_constructor(m, CHECK_NULL); | |
2049 } | |
2050 return JNIHandles::make_local(method); | |
2051 } | |
2052 | |
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2053 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2054 { |
2055 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
2056 JvmtiVMObjectAllocEventCollector oam; | |
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2057 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2058 bounds_check(cp, index, CHECK_NULL); |
2059 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
2060 return res; | |
2061 } | |
2062 JVM_END | |
2063 | |
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2064 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2065 { |
2066 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
2067 JvmtiVMObjectAllocEventCollector oam; | |
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2068 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2069 bounds_check(cp, index, CHECK_NULL); |
2070 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
2071 return res; | |
2072 } | |
2073 JVM_END | |
2074 | |
2075 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
2076 constantTag tag = cp->tag_at(index); | |
2077 if (!tag.is_field()) { | |
2078 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2079 } | |
2080 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2081 Klass* k_o; |
0 | 2082 if (force_resolution) { |
2083 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
2084 } else { | |
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2085 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
0 | 2086 if (k_o == NULL) return NULL; |
2087 } | |
2088 instanceKlassHandle k(THREAD, k_o); | |
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2089 Symbol* name = cp->uncached_name_ref_at(index); |
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2090 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 2091 fieldDescriptor fd; |
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2092 Klass* target_klass = k->find_field(name, sig, &fd); |
0 | 2093 if (target_klass == NULL) { |
2094 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
2095 } | |
2096 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
2097 return JNIHandles::make_local(field); | |
2098 } | |
2099 | |
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2100 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
0 | 2101 { |
2102 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
2103 JvmtiVMObjectAllocEventCollector oam; | |
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2104 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2105 bounds_check(cp, index, CHECK_NULL); |
2106 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
2107 return res; | |
2108 } | |
2109 JVM_END | |
2110 | |
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2111 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2112 { |
2113 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
2114 JvmtiVMObjectAllocEventCollector oam; | |
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2115 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2116 bounds_check(cp, index, CHECK_NULL); |
2117 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
2118 return res; | |
2119 } | |
2120 JVM_END | |
2121 | |
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2122 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2123 { |
2124 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
2125 JvmtiVMObjectAllocEventCollector oam; | |
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2126 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2127 bounds_check(cp, index, CHECK_NULL); |
2128 constantTag tag = cp->tag_at(index); | |
2129 if (!tag.is_field_or_method()) { | |
2130 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2131 } | |
2132 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2133 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2134 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2135 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 2136 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 2137 objArrayHandle dest(THREAD, dest_o); |
2138 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
2139 dest->obj_at_put(0, str()); | |
2140 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
2141 dest->obj_at_put(1, str()); | |
2142 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
2143 dest->obj_at_put(2, str()); | |
2144 return (jobjectArray) JNIHandles::make_local(dest()); | |
2145 } | |
2146 JVM_END | |
2147 | |
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2148 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2149 { |
2150 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2151 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2152 bounds_check(cp, index, CHECK_0); |
2153 constantTag tag = cp->tag_at(index); | |
2154 if (!tag.is_int()) { | |
2155 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2156 } | |
2157 return cp->int_at(index); | |
2158 } | |
2159 JVM_END | |
2160 | |
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2161 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2162 { |
2163 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2164 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2165 bounds_check(cp, index, CHECK_(0L)); |
2166 constantTag tag = cp->tag_at(index); | |
2167 if (!tag.is_long()) { | |
2168 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2169 } | |
2170 return cp->long_at(index); | |
2171 } | |
2172 JVM_END | |
2173 | |
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2174 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2175 { |
2176 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2177 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2178 bounds_check(cp, index, CHECK_(0.0f)); |
2179 constantTag tag = cp->tag_at(index); | |
2180 if (!tag.is_float()) { | |
2181 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2182 } | |
2183 return cp->float_at(index); | |
2184 } | |
2185 JVM_END | |
2186 | |
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2187 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2188 { |
2189 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2190 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2191 bounds_check(cp, index, CHECK_(0.0)); |
2192 constantTag tag = cp->tag_at(index); | |
2193 if (!tag.is_double()) { | |
2194 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2195 } | |
2196 return cp->double_at(index); | |
2197 } | |
2198 JVM_END | |
2199 | |
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2200 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2201 { |
2202 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2203 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2204 bounds_check(cp, index, CHECK_NULL); |
2205 constantTag tag = cp->tag_at(index); | |
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2206 if (!tag.is_string()) { |
0 | 2207 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
2208 } | |
2209 oop str = cp->string_at(index, CHECK_NULL); | |
2210 return (jstring) JNIHandles::make_local(str); | |
2211 } | |
2212 JVM_END | |
2213 | |
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2214 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
0 | 2215 { |
2216 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2217 JvmtiVMObjectAllocEventCollector oam; | |
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2218 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
0 | 2219 bounds_check(cp, index, CHECK_NULL); |
2220 constantTag tag = cp->tag_at(index); | |
2221 if (!tag.is_symbol()) { | |
2222 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2223 } | |
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2224 Symbol* sym = cp->symbol_at(index); |
0 | 2225 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2226 return (jstring) JNIHandles::make_local(str()); | |
2227 } | |
2228 JVM_END | |
2229 | |
2230 | |
2231 // Assertion support. ////////////////////////////////////////////////////////// | |
2232 | |
2233 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2234 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2235 assert(cls != NULL, "bad class"); | |
2236 | |
2237 oop r = JNIHandles::resolve(cls); | |
2238 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2239 if (java_lang_Class::is_primitive(r)) return false; | |
2240 | |
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2241 Klass* k = java_lang_Class::as_Klass(r); |
6983 | 2242 assert(k->oop_is_instance(), "must be an instance klass"); |
2243 if (! k->oop_is_instance()) return false; | |
0 | 2244 |
2245 ResourceMark rm(THREAD); | |
6983 | 2246 const char* name = k->name()->as_C_string(); |
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2247 bool system_class = k->class_loader() == NULL GRAAL_ONLY(|| SystemDictionary::graal_loader() == k->class_loader()); |
0 | 2248 return JavaAssertions::enabled(name, system_class); |
2249 | |
2250 JVM_END | |
2251 | |
2252 | |
2253 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2254 // command-line assertion arguments (i.e., -ea, -da). | |
2255 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2256 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2257 JvmtiVMObjectAllocEventCollector oam; | |
2258 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2259 return JNIHandles::make_local(env, asd); | |
2260 JVM_END | |
2261 | |
2262 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2263 | |
2264 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2265 | |
2266 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2267 // All functions from this section should call the jvmtiThreadSate function: | |
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2268 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2269 // The function returns a Klass* of the _scratch_class if the verifier |
0 | 2270 // was invoked in the middle of the class redefinition. |
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2271 // Otherwise it returns its argument value which is the _the_class Klass*. |
0 | 2272 // Please, refer to the description in the jvmtiThreadSate.hpp. |
2273 | |
2274 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2275 JVMWrapper("JVM_GetClassNameUTF"); | |
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2276 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2277 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2278 return k->name()->as_utf8(); |
0 | 2279 JVM_END |
2280 | |
2281 | |
2282 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2283 JVMWrapper("JVM_GetClassCPTypes"); | |
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2284 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2285 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2286 // types will have length zero if this is not an InstanceKlass |
0 | 2287 // (length is determined by call to JVM_GetClassCPEntriesCount) |
6983 | 2288 if (k->oop_is_instance()) { |
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2289 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2290 for (int index = cp->length() - 1; index >= 0; index--) { |
2291 constantTag tag = cp->tag_at(index); | |
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2292 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
0 | 2293 } |
2294 } | |
2295 JVM_END | |
2296 | |
2297 | |
2298 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2299 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2300 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2301 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2302 if (!k->oop_is_instance()) |
0 | 2303 return 0; |
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2304 return InstanceKlass::cast(k)->constants()->length(); |
0 | 2305 JVM_END |
2306 | |
2307 | |
2308 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2309 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2310 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2311 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2312 if (!k->oop_is_instance()) |
0 | 2313 return 0; |
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2314 return InstanceKlass::cast(k)->java_fields_count(); |
0 | 2315 JVM_END |
2316 | |
2317 | |
2318 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2319 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2320 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2321 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
6983 | 2322 if (!k->oop_is_instance()) |
0 | 2323 return 0; |
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2324 return InstanceKlass::cast(k)->methods()->length(); |
0 | 2325 JVM_END |
2326 | |
2327 | |
2328 // The following methods, used for the verifier, are never called with | |
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2329 // array klasses, so a direct cast to InstanceKlass is safe. |
0 | 2330 // Typically, these methods are called in a loop with bounds determined |
2331 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2332 // zero for arrays. | |
2333 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2334 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2335 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2336 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2337 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2338 int length = method->checked_exceptions_length(); |
0 | 2339 if (length > 0) { |
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2340 CheckedExceptionElement* table= method->checked_exceptions_start(); |
0 | 2341 for (int i = 0; i < length; i++) { |
2342 exceptions[i] = table[i].class_cp_index; | |
2343 } | |
2344 } | |
2345 JVM_END | |
2346 | |
2347 | |
2348 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2349 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2350 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2351 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2352 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2353 return method->checked_exceptions_length(); |
0 | 2354 JVM_END |
2355 | |
2356 | |
2357 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2358 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2359 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2360 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2361 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2362 memcpy(code, method->code_base(), method->code_size()); |
0 | 2363 JVM_END |
2364 | |
2365 | |
2366 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2367 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2368 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2369 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2370 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2371 return method->code_size(); |
0 | 2372 JVM_END |
2373 | |
2374 | |
2375 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2376 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2377 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2378 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2379 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2380 ExceptionTable extable(method); |
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2381 entry->start_pc = extable.start_pc(entry_index); |
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2382 entry->end_pc = extable.end_pc(entry_index); |
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2383 entry->handler_pc = extable.handler_pc(entry_index); |
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2384 entry->catchType = extable.catch_type_index(entry_index); |
0 | 2385 JVM_END |
2386 | |
2387 | |
2388 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2389 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2390 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2391 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2392 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2393 return method->exception_table_length(); |
0 | 2394 JVM_END |
2395 | |
2396 | |
2397 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2398 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2399 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2400 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2401 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2402 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
0 | 2403 JVM_END |
2404 | |
2405 | |
2406 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2407 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2408 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2409 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2410 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2411 JVM_END |
2412 | |
2413 | |
2414 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2415 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2416 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2417 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2418 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2419 return method->max_locals(); |
0 | 2420 JVM_END |
2421 | |
2422 | |
2423 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2424 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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2425 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2426 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2427 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2428 return method->size_of_parameters(); |
0 | 2429 JVM_END |
2430 | |
2431 | |
2432 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2433 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2434 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2435 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2436 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2437 return method->verifier_max_stack(); |
0 | 2438 JVM_END |
2439 | |
2440 | |
2441 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2442 JVMWrapper("JVM_IsConstructorIx"); | |
2443 ResourceMark rm(THREAD); | |
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2444 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2445 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2446 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2447 return method->name() == vmSymbols::object_initializer_name(); |
0 | 2448 JVM_END |
2449 | |
2450 | |
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2451 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
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2452 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2453 ResourceMark rm(THREAD); |
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2454 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2455 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2456 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2457 return method->is_overpass(); |
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2458 JVM_END |
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2459 |
0 | 2460 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
2461 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2462 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2463 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2464 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2465 return method->name()->as_utf8(); |
0 | 2466 JVM_END |
2467 | |
2468 | |
2469 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2470 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
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2471 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2472 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2473 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2474 return method->signature()->as_utf8(); |
0 | 2475 JVM_END |
2476 | |
2477 /** | |
2478 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2479 * read entries in the constant pool. Since the old verifier always | |
2480 * works on a copy of the code, it will not see any rewriting that | |
2481 * may possibly occur in the middle of verification. So it is important | |
2482 * that nothing it calls tries to use the cpCache instead of the raw | |
2483 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2484 */ | |
2485 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2486 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
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2487 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2488 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2489 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2490 switch (cp->tag_at(cp_index).value()) { |
2491 case JVM_CONSTANT_Fieldref: | |
2492 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2493 default: | |
2494 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2495 } | |
2496 ShouldNotReachHere(); | |
2497 return NULL; | |
2498 JVM_END | |
2499 | |
2500 | |
2501 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2502 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
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2503 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2504 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2505 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2506 switch (cp->tag_at(cp_index).value()) { |
2507 case JVM_CONSTANT_InterfaceMethodref: | |
2508 case JVM_CONSTANT_Methodref: | |
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2509 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2510 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2511 default: | |
2512 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2513 } | |
2514 ShouldNotReachHere(); | |
2515 return NULL; | |
2516 JVM_END | |
2517 | |
2518 | |
2519 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2520 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
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2521 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2522 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2523 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2524 switch (cp->tag_at(cp_index).value()) { |
2525 case JVM_CONSTANT_InterfaceMethodref: | |
2526 case JVM_CONSTANT_Methodref: | |
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2527 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2528 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2529 default: | |
2530 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2531 } | |
2532 ShouldNotReachHere(); | |
2533 return NULL; | |
2534 JVM_END | |
2535 | |
2536 | |
2537 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2538 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
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2539 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2540 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2541 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2542 switch (cp->tag_at(cp_index).value()) { |
2543 case JVM_CONSTANT_Fieldref: | |
2544 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2545 default: | |
2546 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2547 } | |
2548 ShouldNotReachHere(); | |
2549 return NULL; | |
2550 JVM_END | |
2551 | |
2552 | |
2553 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2554 JVMWrapper("JVM_GetCPClassNameUTF"); | |
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2555 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2556 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2557 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2558 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2559 return classname->as_utf8(); |
2560 JVM_END | |
2561 | |
2562 | |
2563 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2564 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
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2565 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2566 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2567 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2568 switch (cp->tag_at(cp_index).value()) { |
2569 case JVM_CONSTANT_Fieldref: { | |
2570 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2571 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2572 return classname->as_utf8(); |
2573 } | |
2574 default: | |
2575 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2576 } | |
2577 ShouldNotReachHere(); | |
2578 return NULL; | |
2579 JVM_END | |
2580 | |
2581 | |
2582 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2583 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
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2584 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
0 | 2585 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2586 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2587 switch (cp->tag_at(cp_index).value()) { |
2588 case JVM_CONSTANT_Methodref: | |
2589 case JVM_CONSTANT_InterfaceMethodref: { | |
2590 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2591 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2592 return classname->as_utf8(); |
2593 } | |
2594 default: | |
2595 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2596 } | |
2597 ShouldNotReachHere(); | |
2598 return NULL; | |
2599 JVM_END | |
2600 | |
2601 | |
3938 | 2602 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2603 JVMWrapper("JVM_GetCPFieldModifiers"); |
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2604 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2605 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2606 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2607 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2608 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2609 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
0 | 2610 switch (cp->tag_at(cp_index).value()) { |
2611 case JVM_CONSTANT_Fieldref: { | |
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2612 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2613 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2614 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2615 if (fs.name() == name && fs.signature() == signature) { | |
2616 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2617 } |
2618 } | |
2619 return -1; | |
2620 } | |
2621 default: | |
2622 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2623 } | |
2624 ShouldNotReachHere(); | |
2625 return 0; | |
2626 JVM_END | |
2627 | |
2628 | |
2629 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2630 JVMWrapper("JVM_GetCPMethodModifiers"); | |
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2631 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2632 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
0 | 2633 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
2634 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
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2635 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
0 | 2636 switch (cp->tag_at(cp_index).value()) { |
2637 case JVM_CONSTANT_Methodref: | |
2638 case JVM_CONSTANT_InterfaceMethodref: { | |
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2639 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2640 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
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2641 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
0 | 2642 int methods_count = methods->length(); |
2643 for (int i = 0; i < methods_count; i++) { | |
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2644 Method* method = methods->at(i); |
0 | 2645 if (method->name() == name && method->signature() == signature) { |
2646 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2647 } | |
2648 } | |
2649 return -1; | |
2650 } | |
2651 default: | |
2652 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2653 } | |
2654 ShouldNotReachHere(); | |
2655 return 0; | |
2656 JVM_END | |
2657 | |
2658 | |
2659 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2660 | |
2661 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2662 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2663 JVM_END | |
2664 | |
2665 | |
2666 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2667 JVMWrapper("JVM_IsSameClassPackage"); | |
2668 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2669 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
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2670 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
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2671 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
0 | 2672 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
2673 JVM_END | |
2674 | |
2675 | |
2676 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2677 | |
2678 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2679 JVMWrapper2("JVM_Open (%s)", fname); | |
2680 | |
2681 //%note jvm_r6 | |
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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|
2682 int result = os::open(fname, flags, mode); |
0 | 2683 if (result >= 0) { |
2684 return result; | |
2685 } else { | |
2686 switch(errno) { | |
2687 case EEXIST: | |
2688 return JVM_EEXIST; | |
2689 default: | |
2690 return -1; | |
2691 } | |
2692 } | |
2693 JVM_END | |
2694 | |
2695 | |
2696 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2697 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2698 //%note jvm_r6 | |
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|
2699 return os::close(fd); |
0 | 2700 JVM_END |
2701 | |
2702 | |
2703 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2704 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2705 | |
2706 //%note jvm_r6 | |
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2707 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2708 JVM_END |
2709 | |
2710 | |
2711 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2712 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2713 | |
2714 //%note jvm_r6 | |
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2715 return (jint)os::write(fd, buf, nbytes); |
0 | 2716 JVM_END |
2717 | |
2718 | |
2719 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2720 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2721 //%note jvm_r6 | |
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2722 return os::available(fd, pbytes); |
0 | 2723 JVM_END |
2724 | |
2725 | |
2726 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2727 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2728 //%note jvm_r6 | |
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|
2729 return os::lseek(fd, offset, whence); |
0 | 2730 JVM_END |
2731 | |
2732 | |
2733 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2734 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
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2735 return os::ftruncate(fd, length); |
0 | 2736 JVM_END |
2737 | |
2738 | |
2739 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2740 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2741 //%note jvm_r6 | |
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2742 return os::fsync(fd); |
0 | 2743 JVM_END |
2744 | |
2745 | |
2746 // Printing support ////////////////////////////////////////////////// | |
2747 extern "C" { | |
2748 | |
2749 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2750 // see bug 4399518, 4417214 | |
2751 if ((intptr_t)count <= 0) return -1; | |
2752 return vsnprintf(str, count, fmt, args); | |
2753 } | |
2754 | |
2755 | |
2756 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2757 va_list args; | |
2758 int len; | |
2759 va_start(args, fmt); | |
2760 len = jio_vsnprintf(str, count, fmt, args); | |
2761 va_end(args); | |
2762 return len; | |
2763 } | |
2764 | |
2765 | |
2766 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2767 int len; | |
2768 va_list args; | |
2769 va_start(args, fmt); | |
2770 len = jio_vfprintf(f, fmt, args); | |
2771 va_end(args); | |
2772 return len; | |
2773 } | |
2774 | |
2775 | |
2776 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2777 if (Arguments::vfprintf_hook() != NULL) { | |
2778 return Arguments::vfprintf_hook()(f, fmt, args); | |
2779 } else { | |
2780 return vfprintf(f, fmt, args); | |
2781 } | |
2782 } | |
2783 | |
2784 | |
2191 | 2785 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2786 int len; |
2787 va_list args; | |
2788 va_start(args, fmt); | |
2789 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2790 va_end(args); | |
2791 return len; | |
2792 } | |
2793 | |
2794 | |
2795 // HotSpot specific jio method | |
2796 void jio_print(const char* s) { | |
2797 // Try to make this function as atomic as possible. | |
2798 if (Arguments::vfprintf_hook() != NULL) { | |
2799 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2800 } else { | |
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2801 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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431
diff
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|
2802 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2803 } |
2804 } | |
2805 | |
2806 } // Extern C | |
2807 | |
2808 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2809 | |
2810 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2811 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2812 // OSThread objects. The exception to this rule is when the target object is the thread | |
2813 // doing the operation, in which case we know that the thread won't exit until the | |
2814 // operation is done (all exits being voluntary). There are a few cases where it is | |
2815 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2816 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2817 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2818 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2819 // implementation is local to this file, we always lock Threads_lock for that one. | |
2820 | |
2821 static void thread_entry(JavaThread* thread, TRAPS) { | |
2822 HandleMark hm(THREAD); | |
2823 Handle obj(THREAD, thread->threadObj()); | |
2824 JavaValue result(T_VOID); | |
2825 JavaCalls::call_virtual(&result, | |
2826 obj, | |
1142 | 2827 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
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|
2828 vmSymbols::run_method_name(), |
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2829 vmSymbols::void_method_signature(), |
0 | 2830 THREAD); |
2831 } | |
2832 | |
2833 | |
2834 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2835 JVMWrapper("JVM_StartThread"); | |
2836 JavaThread *native_thread = NULL; | |
2837 | |
2838 // We cannot hold the Threads_lock when we throw an exception, | |
2839 // due to rank ordering issues. Example: we might need to grab the | |
2840 // Heap_lock while we construct the exception. | |
2841 bool throw_illegal_thread_state = false; | |
2842 | |
2843 // We must release the Threads_lock before we can post a jvmti event | |
2844 // in Thread::start. | |
2845 { | |
2846 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2847 // we operate. | |
2848 MutexLocker mu(Threads_lock); | |
2849 | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2850 // 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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1980
diff
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|
2851 // 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
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1980
diff
changeset
|
2852 // 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
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1980
diff
changeset
|
2853 // there is a small window between the Thread object being created |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2854 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2855 // have to check for this |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2856 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2857 throw_illegal_thread_state = true; |
0 | 2858 } else { |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2859 // 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
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1980
diff
changeset
|
2860 // for historical reasons we let the thread detect that itself when it starts running |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2861 |
0 | 2862 jlong size = |
2863 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2864 // Allocate the C++ Thread structure and create the native thread. The | |
2865 // stack size retrieved from java is signed, but the constructor takes | |
2866 // size_t (an unsigned type), so avoid passing negative values which would | |
2867 // result in really large stacks. | |
2868 size_t sz = size > 0 ? (size_t) size : 0; | |
2869 native_thread = new JavaThread(&thread_entry, sz); | |
2870 | |
2871 // At this point it may be possible that no osthread was created for the | |
2872 // JavaThread due to lack of memory. Check for this situation and throw | |
2873 // an exception if necessary. Eventually we may want to change this so | |
2874 // that we only grab the lock if the thread was created successfully - | |
2875 // then we can also do this check and throw the exception in the | |
2876 // JavaThread constructor. | |
2877 if (native_thread->osthread() != NULL) { | |
2878 // Note: the current thread is not being used within "prepare". | |
2879 native_thread->prepare(jthread); | |
2880 } | |
2881 } | |
2882 } | |
2883 | |
2884 if (throw_illegal_thread_state) { | |
2885 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2886 } | |
2887 | |
2888 assert(native_thread != NULL, "Starting null thread?"); | |
2889 | |
2890 if (native_thread->osthread() == NULL) { | |
2891 // No one should hold a reference to the 'native_thread'. | |
2892 delete native_thread; | |
2893 if (JvmtiExport::should_post_resource_exhausted()) { | |
2894 JvmtiExport::post_resource_exhausted( | |
2895 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
14909 | 2896 "unable to create new native thread"); |
0 | 2897 } |
2898 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
14909 | 2899 "unable to create new native thread"); |
0 | 2900 } |
2901 | |
2902 Thread::start(native_thread); | |
2903 | |
2904 JVM_END | |
2905 | |
2906 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2907 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2908 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2909 // same thread as the sender, no safepoint is needed. |
0 | 2910 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2911 JVMWrapper("JVM_StopThread"); | |
2912 | |
2913 oop java_throwable = JNIHandles::resolve(throwable); | |
2914 if (java_throwable == NULL) { | |
2915 THROW(vmSymbols::java_lang_NullPointerException()); | |
2916 } | |
2917 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2918 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2919 Events::log_exception(JavaThread::current(), |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2920 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2921 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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1980
diff
changeset
|
2922 // First check if thread is alive |
0 | 2923 if (receiver != NULL) { |
2924 // Check if exception is getting thrown at self (use oop equality, since the | |
2925 // target object might exit) | |
2926 if (java_thread == thread->threadObj()) { | |
2927 THROW_OOP(java_throwable); | |
2928 } else { | |
2929 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2930 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2931 } | |
2932 } | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2933 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2934 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2935 // - 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
|
2936 // - target thread already terminated |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2937 // 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
|
2938 // 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
|
2939 // stillborn flag for the first case, and if the thread has already |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2940 // exited setting this flag has no affect |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2941 java_lang_Thread::set_stillborn(java_thread); |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2942 } |
0 | 2943 JVM_END |
2944 | |
2945 | |
2946 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2947 JVMWrapper("JVM_IsThreadAlive"); | |
2948 | |
2949 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2950 return java_lang_Thread::is_alive(thread_oop); | |
2951 JVM_END | |
2952 | |
2953 | |
2954 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2955 JVMWrapper("JVM_SuspendThread"); | |
2956 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2957 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2958 | |
2959 if (receiver != NULL) { | |
2960 // thread has run and has not exited (still on threads list) | |
2961 | |
2962 { | |
2963 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2964 if (receiver->is_external_suspend()) { | |
2965 // Don't allow nested external suspend requests. We can't return | |
2966 // an error from this interface so just ignore the problem. | |
2967 return; | |
2968 } | |
2969 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2970 return; | |
2971 } | |
2972 receiver->set_external_suspend(); | |
2973 } | |
2974 | |
2975 // java_suspend() will catch threads in the process of exiting | |
2976 // and will ignore them. | |
2977 receiver->java_suspend(); | |
2978 | |
2979 // It would be nice to have the following assertion in all the | |
2980 // time, but it is possible for a racing resume request to have | |
2981 // resumed this thread right after we suspended it. Temporarily | |
2982 // enable this assertion if you are chasing a different kind of | |
2983 // bug. | |
2984 // | |
2985 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2986 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2987 } | |
2988 JVM_END | |
2989 | |
2990 | |
2991 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2992 JVMWrapper("JVM_ResumeThread"); | |
2993 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2994 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2995 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2996 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2997 // looks at it. | |
2998 MutexLocker ml(Threads_lock); | |
2999 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3000 if (thr != NULL) { | |
3001 // the thread has run and is not in the process of exiting | |
3002 thr->java_resume(); | |
3003 } | |
3004 JVM_END | |
3005 | |
3006 | |
3007 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
3008 JVMWrapper("JVM_SetThreadPriority"); | |
3009 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3010 MutexLocker ml(Threads_lock); | |
3011 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3012 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
3013 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3014 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
3015 Thread::set_priority(thr, (ThreadPriority)prio); | |
3016 } | |
3017 JVM_END | |
3018 | |
3019 | |
3020 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
3021 JVMWrapper("JVM_Yield"); | |
3022 if (os::dont_yield()) return; | |
14909 | 3023 #ifndef USDT2 |
3024 HS_DTRACE_PROBE0(hotspot, thread__yield); | |
3025 #else /* USDT2 */ | |
4006 | 3026 HOTSPOT_THREAD_YIELD(); |
14909 | 3027 #endif /* USDT2 */ |
0 | 3028 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
3029 // Critical for similar threading behaviour | |
3030 if (ConvertYieldToSleep) { | |
3031 os::sleep(thread, MinSleepInterval, false); | |
3032 } else { | |
3033 os::yield(); | |
3034 } | |
3035 JVM_END | |
3036 | |
3037 | |
3038 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
3039 JVMWrapper("JVM_Sleep"); | |
3040 | |
3041 if (millis < 0) { | |
3042 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
3043 } | |
3044 | |
3045 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
3046 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3047 } | |
3048 | |
3049 // Save current thread state and restore it at the end of this block. | |
3050 // And set new thread state to SLEEPING. | |
3051 JavaThreadSleepState jtss(thread); | |
3052 | |
14909 | 3053 #ifndef USDT2 |
3054 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); | |
3055 #else /* USDT2 */ | |
3056 HOTSPOT_THREAD_SLEEP_BEGIN( | |
3057 millis); | |
3058 #endif /* USDT2 */ | |
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3059 |
10405 | 3060 EventThreadSleep event; |
3061 | |
0 | 3062 if (millis == 0) { |
3063 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
3064 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
3065 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
3066 // for SOLARIS | |
3067 if (ConvertSleepToYield) { | |
3068 os::yield(); | |
3069 } else { | |
3070 ThreadState old_state = thread->osthread()->get_state(); | |
3071 thread->osthread()->set_state(SLEEPING); | |
3072 os::sleep(thread, MinSleepInterval, false); | |
3073 thread->osthread()->set_state(old_state); | |
3074 } | |
3075 } else { | |
3076 ThreadState old_state = thread->osthread()->get_state(); | |
3077 thread->osthread()->set_state(SLEEPING); | |
3078 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
3079 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
3080 // us while we were sleeping. We do not overwrite those. | |
3081 if (!HAS_PENDING_EXCEPTION) { | |
10405 | 3082 if (event.should_commit()) { |
3083 event.set_time(millis); | |
3084 event.commit(); | |
3085 } | |
14909 | 3086 #ifndef USDT2 |
3087 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); | |
3088 #else /* USDT2 */ | |
3089 HOTSPOT_THREAD_SLEEP_END( | |
3090 1); | |
3091 #endif /* USDT2 */ | |
0 | 3092 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
3093 // to properly restore the thread state. That's likely wrong. | |
3094 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
3095 } | |
3096 } | |
3097 thread->osthread()->set_state(old_state); | |
3098 } | |
10405 | 3099 if (event.should_commit()) { |
3100 event.set_time(millis); | |
3101 event.commit(); | |
3102 } | |
14909 | 3103 #ifndef USDT2 |
3104 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); | |
3105 #else /* USDT2 */ | |
3106 HOTSPOT_THREAD_SLEEP_END( | |
3107 0); | |
3108 #endif /* USDT2 */ | |
0 | 3109 JVM_END |
3110 | |
3111 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
3112 JVMWrapper("JVM_CurrentThread"); | |
3113 oop jthread = thread->threadObj(); | |
3114 assert (thread != NULL, "no current thread!"); | |
3115 return JNIHandles::make_local(env, jthread); | |
3116 JVM_END | |
3117 | |
3118 | |
3119 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
3120 JVMWrapper("JVM_CountStackFrames"); | |
3121 | |
3122 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3123 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3124 bool throw_illegal_thread_state = false; | |
3125 int count = 0; | |
3126 | |
3127 { | |
3128 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3129 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3130 // acquire of the lock | |
3131 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3132 | |
3133 if (thr == NULL) { | |
3134 // do nothing | |
3135 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
3136 // Check whether this java thread has been suspended already. If not, throws | |
3137 // IllegalThreadStateException. We defer to throw that exception until | |
3138 // Threads_lock is released since loading exception class has to leave VM. | |
3139 // The correct way to test a thread is actually suspended is | |
3140 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
3141 // the Threads_lock. The above tests are sufficient for our purposes | |
3142 // provided the walkability of the stack is stable - which it isn't | |
3143 // 100% but close enough for most practical purposes. | |
3144 throw_illegal_thread_state = true; | |
3145 } else { | |
3146 // Count all java activation, i.e., number of vframes | |
3147 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
3148 // Native frames are not counted | |
3149 if (!vfst.method()->is_native()) count++; | |
3150 } | |
3151 } | |
3152 } | |
3153 | |
3154 if (throw_illegal_thread_state) { | |
3155 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
3156 "this thread is not suspended"); | |
3157 } | |
3158 return count; | |
3159 JVM_END | |
3160 | |
3161 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
3162 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
3163 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
3164 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
3165 // outside the critical section. Threads_lock is hot so we want to minimize | |
3166 // the hold-time. A cleaner interface would be to decompose interrupt into | |
3167 // two steps. The 1st phase, performed under Threads_lock, would return | |
3168 // a closure that'd be invoked after Threads_lock was dropped. | |
3169 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
3170 // admit spurious wakeups. | |
3171 | |
3172 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
3173 JVMWrapper("JVM_Interrupt"); | |
3174 | |
3175 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3176 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3177 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3178 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3179 // acquire of the lock | |
3180 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3181 if (thr != NULL) { | |
3182 Thread::interrupt(thr); | |
3183 } | |
3184 JVM_END | |
3185 | |
3186 | |
3187 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
3188 JVMWrapper("JVM_IsInterrupted"); | |
3189 | |
3190 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
3191 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3192 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
3193 // We need to re-resolve the java_thread, since a GC might have happened during the | |
3194 // acquire of the lock | |
3195 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
3196 if (thr == NULL) { | |
3197 return JNI_FALSE; | |
3198 } else { | |
3199 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
3200 } | |
3201 JVM_END | |
3202 | |
3203 | |
3204 // Return true iff the current thread has locked the object passed in | |
3205 | |
3206 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
3207 JVMWrapper("JVM_HoldsLock"); | |
3208 assert(THREAD->is_Java_thread(), "sanity check"); | |
3209 if (obj == NULL) { | |
3210 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
3211 } | |
3212 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
3213 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
3214 JVM_END | |
3215 | |
3216 | |
3217 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
3218 JVMWrapper("JVM_DumpAllStacks"); | |
3219 VM_PrintThreads op; | |
3220 VMThread::execute(&op); | |
3221 if (JvmtiExport::should_post_data_dump()) { | |
3222 JvmtiExport::post_data_dump(); | |
3223 } | |
3224 JVM_END | |
3225 | |
4006 | 3226 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
3227 JVMWrapper("JVM_SetNativeThreadName"); | |
3228 ResourceMark rm(THREAD); | |
3229 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
3230 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
3231 // Thread naming only supported for the current thread, doesn't work for | |
3232 // target threads. | |
3233 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
3234 // we don't set the name of an attached thread to avoid stepping | |
3235 // on other programs | |
3236 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3237 os::set_native_thread_name(thread_name); | |
3238 } | |
3239 JVM_END | |
0 | 3240 |
3241 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
3242 | |
3243 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
3244 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
3245 if (jthread->privileged_stack_top() == NULL) return false; | |
3246 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
3247 oop loader = jthread->privileged_stack_top()->class_loader(); | |
3248 if (loader == NULL) return true; | |
3249 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3250 if (trusted) return true; | |
3251 } | |
3252 return false; | |
3253 } | |
3254 | |
3255 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3256 JVMWrapper("JVM_CurrentLoadedClass"); | |
3257 ResourceMark rm(THREAD); | |
3258 | |
3259 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3260 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3261 bool trusted = is_trusted_frame(thread, &vfst); | |
3262 if (trusted) return NULL; | |
3263 | |
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3264 Method* m = vfst.method(); |
0 | 3265 if (!m->is_native()) { |
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3266 InstanceKlass* holder = m->method_holder(); |
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3267 oop loader = holder->class_loader(); |
0 | 3268 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
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3269 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
0 | 3270 } |
3271 } | |
3272 } | |
3273 return NULL; | |
3274 JVM_END | |
3275 | |
3276 | |
3277 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3278 JVMWrapper("JVM_CurrentClassLoader"); | |
3279 ResourceMark rm(THREAD); | |
3280 | |
3281 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3282 | |
3283 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3284 bool trusted = is_trusted_frame(thread, &vfst); | |
3285 if (trusted) return NULL; | |
3286 | |
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3287 Method* m = vfst.method(); |
0 | 3288 if (!m->is_native()) { |
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3289 InstanceKlass* holder = m->method_holder(); |
0 | 3290 assert(holder->is_klass(), "just checking"); |
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3291 oop loader = holder->class_loader(); |
0 | 3292 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3293 return JNIHandles::make_local(env, loader); | |
3294 } | |
3295 } | |
3296 } | |
3297 return NULL; | |
3298 JVM_END | |
3299 | |
3300 | |
3301 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3302 JVMWrapper("JVM_GetClassContext"); | |
3303 ResourceMark rm(THREAD); | |
3304 JvmtiVMObjectAllocEventCollector oam; | |
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3305 vframeStream vfst(thread); |
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|
3306 |
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|
3307 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
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3308 // This must only be called from SecurityManager.getClassContext |
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3309 Method* m = vfst.method(); |
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3310 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
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3311 m->name() == vmSymbols::getClassContext_name() && |
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3312 m->signature() == vmSymbols::void_class_array_signature())) { |
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3313 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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3314 } |
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|
3315 } |
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|
3316 |
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|
3317 // Collect method holders |
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|
3318 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
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3319 for (; !vfst.at_end(); vfst.security_next()) { |
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3320 Method* m = vfst.method(); |
0 | 3321 // Native frames are not returned |
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3322 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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3323 Klass* holder = m->method_holder(); |
0 | 3324 assert(holder->is_klass(), "just checking"); |
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3325 klass_array->append(holder); |
0 | 3326 } |
3327 } | |
3328 | |
3329 // Create result array of type [Ljava/lang/Class; | |
11001
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3330 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
0 | 3331 // Fill in mirrors corresponding to method holders |
11001
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|
3332 for (int i = 0; i < klass_array->length(); i++) { |
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3333 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
0 | 3334 } |
3335 | |
3336 return (jobjectArray) JNIHandles::make_local(env, result); | |
3337 JVM_END | |
3338 | |
3339 | |
3340 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3341 JVMWrapper("JVM_ClassDepth"); | |
3342 ResourceMark rm(THREAD); | |
3343 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3344 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3345 | |
3346 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
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diff
changeset
|
3347 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
3582bf76420e
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changeset
|
3348 if (class_name_sym == NULL) { |
0 | 3349 return -1; |
3350 } | |
3351 | |
3352 int depth = 0; | |
3353 | |
3354 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3355 if (!vfst.method()->is_native()) { | |
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|
3356 InstanceKlass* holder = vfst.method()->method_holder(); |
0 | 3357 assert(holder->is_klass(), "just checking"); |
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|
3358 if (holder->name() == class_name_sym) { |
0 | 3359 return depth; |
3360 } | |
3361 depth++; | |
3362 } | |
3363 } | |
3364 return -1; | |
3365 JVM_END | |
3366 | |
3367 | |
3368 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3369 JVMWrapper("JVM_ClassLoaderDepth"); | |
3370 ResourceMark rm(THREAD); | |
3371 int depth = 0; | |
3372 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3373 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3374 bool trusted = is_trusted_frame(thread, &vfst); | |
3375 if (trusted) return -1; | |
3376 | |
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3377 Method* m = vfst.method(); |
0 | 3378 if (!m->is_native()) { |
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3379 InstanceKlass* holder = m->method_holder(); |
0 | 3380 assert(holder->is_klass(), "just checking"); |
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3381 oop loader = holder->class_loader(); |
0 | 3382 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
3383 return depth; | |
3384 } | |
3385 depth++; | |
3386 } | |
3387 } | |
3388 return -1; | |
3389 JVM_END | |
3390 | |
3391 | |
3392 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3393 | |
3394 | |
3395 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3396 JVMWrapper("JVM_GetSystemPackage"); | |
3397 ResourceMark rm(THREAD); | |
3398 JvmtiVMObjectAllocEventCollector oam; | |
3399 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3400 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3401 return (jstring) JNIHandles::make_local(result); | |
3402 JVM_END | |
3403 | |
3404 | |
3405 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3406 JVMWrapper("JVM_GetSystemPackages"); | |
3407 JvmtiVMObjectAllocEventCollector oam; | |
3408 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3409 return (jobjectArray) JNIHandles::make_local(result); | |
3410 JVM_END | |
3411 | |
3412 | |
3413 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3414 | |
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3415 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
0 | 3416 if (current_class == NULL) { |
3417 return true; | |
3418 } | |
3419 if ((current_class == field_class) || access.is_public()) { | |
3420 return true; | |
3421 } | |
3422 | |
3423 if (access.is_protected()) { | |
3424 // See if current_class is a subclass of field_class | |
6983 | 3425 if (current_class->is_subclass_of(field_class)) { |
0 | 3426 return true; |
3427 } | |
3428 } | |
3429 | |
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3430 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
0 | 3431 } |
3432 | |
3433 | |
3434 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3435 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3436 JVMWrapper("JVM_AllocateNewObject"); | |
3437 JvmtiVMObjectAllocEventCollector oam; | |
3438 // Receiver is not used | |
3439 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3440 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3441 | |
3442 // Cannot instantiate primitive types | |
3443 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3444 ResourceMark rm(THREAD); | |
3445 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3446 } | |
3447 | |
3448 // Arrays not allowed here, must use JVM_AllocateNewArray | |
6983 | 3449 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
3450 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
0 | 3451 ResourceMark rm(THREAD); |
3452 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3453 } | |
3454 | |
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3455 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3456 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
0 | 3457 |
3458 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3459 | |
3460 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3461 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3462 | |
3463 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3464 curr_klass->initialize(CHECK_NULL); | |
3465 | |
3466 methodHandle m (THREAD, | |
3467 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3468 vmSymbols::void_method_signature())); | |
3469 if (m.is_null()) { | |
3470 ResourceMark rm(THREAD); | |
3471 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 3472 Method::name_and_sig_as_C_string(init_klass(), |
0 | 3473 vmSymbols::object_initializer_name(), |
3474 vmSymbols::void_method_signature())); | |
3475 } | |
3476 | |
3477 if (curr_klass == init_klass && !m->is_public()) { | |
3478 // Calling the constructor for class 'curr_klass'. | |
3479 // Only allow calls to a public no-arg constructor. | |
3480 // This path corresponds to creating an Externalizable object. | |
3481 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3482 } | |
3483 | |
3484 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3485 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3486 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3487 } | |
3488 | |
3489 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3490 // Call constructor m. This might call a constructor higher up in the hierachy | |
3491 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3492 | |
3493 return JNIHandles::make_local(obj()); | |
3494 JVM_END | |
3495 | |
3496 | |
3497 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3498 JVMWrapper("JVM_AllocateNewArray"); | |
3499 JvmtiVMObjectAllocEventCollector oam; | |
3500 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3501 | |
3502 if (java_lang_Class::is_primitive(mirror)) { | |
3503 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3504 } | |
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3505 Klass* k = java_lang_Class::as_Klass(mirror); |
0 | 3506 oop result; |
3507 | |
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3508 if (k->oop_is_typeArray()) { |
0 | 3509 // typeArray |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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changeset
|
3510 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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|
3511 } else if (k->oop_is_objArray()) { |
0 | 3512 // objArray |
6831
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coleenp
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changeset
|
3513 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
0 | 3514 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
3515 result = oak->allocate(length, CHECK_NULL); | |
3516 } else { | |
3517 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3518 } | |
3519 return JNIHandles::make_local(env, result); | |
3520 JVM_END | |
3521 | |
3522 | |
3523 // Return the first non-null class loader up the execution stack, or null | |
3524 // if only code from the null class loader is on the stack. | |
3525 | |
3526 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3527 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3528 // UseNewReflection | |
3529 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
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diff
changeset
|
3530 oop loader = vfst.method()->method_holder()->class_loader(); |
0 | 3531 if (loader != NULL) { |
3532 return JNIHandles::make_local(env, loader); | |
3533 } | |
3534 } | |
3535 return NULL; | |
3536 JVM_END | |
3537 | |
3538 | |
3539 // Load a class relative to the most recent class on the stack with a non-null | |
3540 // classloader. | |
3541 // This function has been deprecated and should not be considered part of the | |
3542 // specified JVM interface. | |
3543 | |
3544 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3545 jclass currClass, jstring currClassName)) | |
3546 JVMWrapper("JVM_LoadClass0"); | |
3547 // Receiver is not used | |
3548 ResourceMark rm(THREAD); | |
3549 | |
3550 // Class name argument is not guaranteed to be in internal format | |
3551 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3552 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3553 | |
3554 const char* str = java_lang_String::as_utf8_string(string()); | |
3555 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3556 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3557 // It's impossible to create this class; the name cannot fit |
3558 // into the constant pool. | |
3559 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3560 } | |
3561 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3562 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3563 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3564 // Find the most recent class on the stack with a non-null classloader | |
3565 oop loader = NULL; | |
3566 oop protection_domain = NULL; | |
3567 if (curr_klass.is_null()) { | |
3568 for (vframeStream vfst(thread); | |
3569 !vfst.at_end() && loader == NULL; | |
3570 vfst.next()) { | |
3571 if (!vfst.method()->is_native()) { | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3572 InstanceKlass* holder = vfst.method()->method_holder(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3573 loader = holder->class_loader(); |
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3574 protection_domain = holder->protection_domain(); |
0 | 3575 } |
3576 } | |
3577 } else { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3578 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3579 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3580 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
0 | 3581 } |
3582 Handle h_loader(THREAD, loader); | |
3583 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3584 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3585 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3586 if (TraceClassResolution && result != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3587 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3588 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3589 return result; |
0 | 3590 JVM_END |
3591 | |
3592 | |
3593 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3594 | |
3595 | |
3596 // resolve array handle and check arguments | |
3597 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3598 if (arr == NULL) { | |
3599 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3600 } | |
3601 oop a = JNIHandles::resolve_non_null(arr); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6271
diff
changeset
|
3602 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
0 | 3603 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
3604 } | |
3605 return arrayOop(a); | |
3606 } | |
3607 | |
3608 | |
3609 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3610 JVMWrapper("JVM_GetArrayLength"); | |
3611 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3612 return a->length(); | |
3613 JVM_END | |
3614 | |
3615 | |
3616 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3617 JVMWrapper("JVM_Array_Get"); | |
3618 JvmtiVMObjectAllocEventCollector oam; | |
3619 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3620 jvalue value; | |
3621 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3622 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3623 return JNIHandles::make_local(env, box); | |
3624 JVM_END | |
3625 | |
3626 | |
3627 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3628 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3629 jvalue value; | |
3630 value.i = 0; // to initialize value before getting used in CHECK | |
3631 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3632 assert(a->is_typeArray(), "just checking"); | |
3633 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3634 BasicType wide_type = (BasicType) wCode; | |
3635 if (type != wide_type) { | |
3636 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3637 } | |
3638 return value; | |
3639 JVM_END | |
3640 | |
3641 | |
3642 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3643 JVMWrapper("JVM_SetArrayElement"); | |
3644 arrayOop a = check_array(env, arr, false, CHECK); | |
3645 oop box = JNIHandles::resolve(val); | |
3646 jvalue value; | |
3647 value.i = 0; // to initialize value before getting used in CHECK | |
3648 BasicType value_type; | |
3649 if (a->is_objArray()) { | |
3650 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3651 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3652 } else { | |
3653 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3654 } | |
3655 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3656 JVM_END | |
3657 | |
3658 | |
3659 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3660 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3661 arrayOop a = check_array(env, arr, true, CHECK); | |
3662 assert(a->is_typeArray(), "just checking"); | |
3663 BasicType value_type = (BasicType) vCode; | |
3664 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3665 JVM_END | |
3666 | |
3667 | |
3668 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3669 JVMWrapper("JVM_NewArray"); | |
3670 JvmtiVMObjectAllocEventCollector oam; | |
3671 oop element_mirror = JNIHandles::resolve(eltClass); | |
3672 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3673 return JNIHandles::make_local(env, result); | |
3674 JVM_END | |
3675 | |
3676 | |
3677 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3678 JVMWrapper("JVM_NewMultiArray"); | |
3679 JvmtiVMObjectAllocEventCollector oam; | |
3680 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3681 oop element_mirror = JNIHandles::resolve(eltClass); | |
3682 assert(dim_array->is_typeArray(), "just checking"); | |
3683 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3684 return JNIHandles::make_local(env, result); | |
3685 JVM_END | |
3686 | |
3687 | |
3688 // Networking library support //////////////////////////////////////////////////////////////////// | |
3689 | |
3690 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3691 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3692 return 0; |
0 | 3693 JVM_END |
3694 | |
3695 | |
3696 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3697 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3698 return os::socket(domain, type, protocol); |
0 | 3699 JVM_END |
3700 | |
3701 | |
3702 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3703 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3704 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3705 return os::socket_close(fd); |
0 | 3706 JVM_END |
3707 | |
3708 | |
3709 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3710 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3711 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3712 return os::socket_shutdown(fd, howto); |
0 | 3713 JVM_END |
3714 | |
3715 | |
3716 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3717 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3718 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3719 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3720 JVM_END |
3721 | |
3722 | |
3723 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3724 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3725 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3726 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
0 | 3727 JVM_END |
3728 | |
3729 | |
3730 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3731 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3732 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3733 return os::timeout(fd, timeout); |
0 | 3734 JVM_END |
3735 | |
3736 | |
3737 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3738 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3739 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3740 return os::listen(fd, count); |
0 | 3741 JVM_END |
3742 | |
3743 | |
3744 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3745 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3746 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3747 return os::connect(fd, him, (socklen_t)len); |
0 | 3748 JVM_END |
3749 | |
3750 | |
3751 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3752 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3753 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3754 return os::bind(fd, him, (socklen_t)len); |
0 | 3755 JVM_END |
3756 | |
3757 | |
3758 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3759 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3760 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3761 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3762 jint result = os::accept(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3763 *len = (jint)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3764 return result; |
0 | 3765 JVM_END |
3766 | |
3767 | |
3768 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3769 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3770 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3771 socklen_t socklen = (socklen_t)(*fromlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3772 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3773 *fromlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3774 return result; |
0 | 3775 JVM_END |
3776 | |
3777 | |
3778 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3779 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3780 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3781 socklen_t socklen = (socklen_t)(*len); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3782 jint result = os::get_sock_name(fd, him, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3783 *len = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3784 return result; |
0 | 3785 JVM_END |
3786 | |
3787 | |
3788 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3789 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3790 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3791 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
0 | 3792 JVM_END |
3793 | |
3794 | |
3795 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3796 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3797 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3798 return os::socket_available(fd, pbytes); |
0 | 3799 JVM_END |
3800 | |
3801 | |
3802 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3803 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3804 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3805 socklen_t socklen = (socklen_t)(*optlen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3806 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3807 *optlen = (int)socklen; |
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3808 return result; |
0 | 3809 JVM_END |
3810 | |
3811 | |
3812 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3813 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3814 //%note jvm_r6 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3815 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
0 | 3816 JVM_END |
3817 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3818 |
0 | 3819 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
3820 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3821 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3822 JVM_END |
0 | 3823 |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3824 |
0 | 3825 // Library support /////////////////////////////////////////////////////////////////////////// |
3826 | |
3827 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3828 //%note jvm_ct | |
3829 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3830 char ebuf[1024]; | |
3831 void *load_result; | |
3832 { | |
3833 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3834 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3835 } |
3836 if (load_result == NULL) { | |
3837 char msg[1024]; | |
3838 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3839 // Since 'ebuf' may contain a string encoded using | |
3840 // platform encoding scheme, we need to pass | |
3841 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3842 // as the last argument. See bug 6367357. | |
3843 Handle h_exception = | |
3844 Exceptions::new_exception(thread, | |
3845 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3846 msg, Exceptions::unsafe_to_utf8); | |
3847 | |
3848 THROW_HANDLE_0(h_exception); | |
3849 } | |
3850 return load_result; | |
3851 JVM_END | |
3852 | |
3853 | |
3854 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3855 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3856 os::dll_unload(handle); |
0 | 3857 JVM_END |
3858 | |
3859 | |
3860 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3861 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3862 return os::dll_lookup(handle, name); |
0 | 3863 JVM_END |
3864 | |
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3865 |
0 | 3866 // Floating point support //////////////////////////////////////////////////////////////////// |
3867 | |
3868 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3869 JVMWrapper("JVM_IsNaN"); | |
3870 return g_isnan(a); | |
3871 JVM_END | |
3872 | |
3873 | |
3874 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3875 | |
3876 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3877 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3878 return Threads::is_supported_jni_version_including_1_1(version); | |
3879 JVM_END | |
3880 | |
3881 | |
3882 // String support /////////////////////////////////////////////////////////////////////////// | |
3883 | |
3884 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3885 JVMWrapper("JVM_InternString"); | |
3886 JvmtiVMObjectAllocEventCollector oam; | |
3887 if (str == NULL) return NULL; | |
3888 oop string = JNIHandles::resolve_non_null(str); | |
3889 oop result = StringTable::intern(string, CHECK_NULL); | |
3890 return (jstring) JNIHandles::make_local(env, result); | |
3891 JVM_END | |
3892 | |
3893 | |
3894 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3895 | |
3896 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3897 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3898 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3899 // that only works with java threads. | |
3900 | |
3901 | |
3902 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3903 VM_Exit::block_if_vm_exited(); | |
3904 JVMWrapper("JVM_RawMonitorCreate"); | |
3905 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3906 } | |
3907 | |
3908 | |
3909 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3910 VM_Exit::block_if_vm_exited(); | |
3911 JVMWrapper("JVM_RawMonitorDestroy"); | |
3912 delete ((Mutex*) mon); | |
3913 } | |
3914 | |
3915 | |
3916 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3917 VM_Exit::block_if_vm_exited(); | |
3918 JVMWrapper("JVM_RawMonitorEnter"); | |
3919 ((Mutex*) mon)->jvm_raw_lock(); | |
3920 return 0; | |
3921 } | |
3922 | |
3923 | |
3924 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3925 VM_Exit::block_if_vm_exited(); | |
3926 JVMWrapper("JVM_RawMonitorExit"); | |
3927 ((Mutex*) mon)->jvm_raw_unlock(); | |
3928 } | |
3929 | |
3930 | |
3931 // Support for Serialization | |
3932 | |
3933 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3934 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3935 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3936 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3937 | |
3938 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3939 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3940 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3941 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3942 | |
3943 | |
3944 void initialize_converter_functions() { | |
3945 if (JDK_Version::is_gte_jdk14x_version()) { | |
3946 // These functions only exist for compatibility with 1.3.1 and earlier | |
3947 return; | |
3948 } | |
3949 | |
3950 // called from universe_post_init() | |
3951 assert( | |
3952 int_bits_to_float_fn == NULL && | |
3953 long_bits_to_double_fn == NULL && | |
3954 float_to_int_bits_fn == NULL && | |
3955 double_to_long_bits_fn == NULL , | |
3956 "initialization done twice" | |
3957 ); | |
3958 // initialize | |
3959 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3960 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3961 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3962 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3963 // verify | |
3964 assert( | |
3965 int_bits_to_float_fn != NULL && | |
3966 long_bits_to_double_fn != NULL && | |
3967 float_to_int_bits_fn != NULL && | |
3968 double_to_long_bits_fn != NULL , | |
3969 "initialization failed" | |
3970 ); | |
3971 } | |
3972 | |
3973 | |
3974 | |
3975 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3976 | |
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3977 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 3978 // Security Note: |
3979 // The Java level wrapper will perform the necessary security check allowing | |
3980 // us to pass the NULL as the initiating class loader. | |
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3981 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
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3982 |
0 | 3983 KlassHandle klass_handle(THREAD, klass); |
3984 // Check if we should initialize the class | |
3985 if (init && klass_handle->oop_is_instance()) { | |
3986 klass_handle->initialize(CHECK_NULL); | |
3987 } | |
3988 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3989 } | |
3990 | |
3991 | |
14909 | 3992 // Internal SQE debugging support /////////////////////////////////////////////////////////// |
3993 | |
3994 #ifndef PRODUCT | |
3995 | |
3996 extern "C" { | |
3997 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
3998 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
3999 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
4000 } | |
4001 | |
4002 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
4003 JVMWrapper("JVM_AccessBoolVMFlag"); | |
4004 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); | |
4005 JVM_END | |
4006 | |
4007 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
4008 JVMWrapper("JVM_AccessVMIntFlag"); | |
4009 intx v; | |
4010 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); | |
4011 *value = (jint)v; | |
4012 return result; | |
4013 JVM_END | |
4014 | |
4015 | |
4016 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4017 JVMWrapper("JVM_VMBreakPoint"); | |
4018 oop the_obj = JNIHandles::resolve(obj); | |
4019 BREAKPOINT; | |
4020 JVM_END | |
4021 | |
4022 | |
4023 #endif | |
4024 | |
4025 | |
0 | 4026 // Method /////////////////////////////////////////////////////////////////////////////////////////// |
4027 | |
4028 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4029 JVMWrapper("JVM_InvokeMethod"); | |
4030 Handle method_handle; | |
4031 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4032 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4033 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4034 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4035 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4036 jobject res = JNIHandles::make_local(env, result); | |
4037 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4038 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4039 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4040 if (java_lang_Class::is_primitive(ret_type)) { | |
4041 // Only for primitive type vm allocates memory for java object. | |
4042 // See box() method. | |
4043 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4044 } | |
4045 } | |
4046 return res; | |
4047 } else { | |
4048 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4049 } | |
4050 JVM_END | |
4051 | |
4052 | |
4053 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4054 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4055 oop constructor_mirror = JNIHandles::resolve(c); | |
4056 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4057 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4058 jobject res = JNIHandles::make_local(env, result); | |
4059 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4060 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4061 } | |
4062 return res; | |
4063 JVM_END | |
4064 | |
4065 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4066 | |
4067 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4068 JVMWrapper("JVM_SupportsCX8"); | |
4069 return VM_Version::supports_cx8(); | |
4070 JVM_END | |
4071 | |
4072 | |
4073 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4074 JVMWrapper("JVM_CX8Field"); | |
4075 jlong res; | |
4076 oop o = JNIHandles::resolve(obj); | |
4077 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4078 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4079 | |
4080 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4081 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4082 | |
4083 return res == oldVal; | |
4084 JVM_END | |
4085 | |
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4086 // DTrace /////////////////////////////////////////////////////////////////// |
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4087 |
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4088 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4089 JVMWrapper("JVM_DTraceGetVersion"); |
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4090 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4091 JVM_END |
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4092 |
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4093 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4094 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4095 JVM_DTraceProvider* providers)) |
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4096 JVMWrapper("JVM_DTraceActivate"); |
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4097 return DTraceJSDT::activate( |
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4098 version, module_name, providers_count, providers, CHECK_0); |
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4099 JVM_END |
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4100 |
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4101 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4102 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4103 return DTraceJSDT::is_probe_enabled(method); |
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4104 JVM_END |
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4105 |
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4106 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4107 JVMWrapper("JVM_DTraceDispose"); |
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4108 DTraceJSDT::dispose(handle); |
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4109 JVM_END |
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4110 |
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4111 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4112 JVMWrapper("JVM_DTraceIsSupported"); |
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4113 return DTraceJSDT::is_supported(); |
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4114 JVM_END |
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4115 |
0 | 4116 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4117 // jvmti agent threads, and JNI attaching threads are skipped) | |
4118 // See CR 6404306 regarding JNI attaching threads | |
4119 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4120 ResourceMark rm(THREAD); | |
4121 ThreadsListEnumerator tle(THREAD, false, false); | |
4122 JvmtiVMObjectAllocEventCollector oam; | |
4123 | |
4124 int num_threads = tle.num_threads(); | |
1142 | 4125 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4126 objArrayHandle threads_ah(THREAD, r); |
4127 | |
4128 for (int i = 0; i < num_threads; i++) { | |
4129 Handle h = tle.get_threadObj(i); | |
4130 threads_ah->obj_at_put(i, h()); | |
4131 } | |
4132 | |
4133 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4134 JVM_END | |
4135 | |
4136 | |
4137 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4138 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4139 // the corresponding entry in the given threads array | |
4140 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4141 JVMWrapper("JVM_DumpThreads"); | |
4142 JvmtiVMObjectAllocEventCollector oam; | |
4143 | |
4144 // Check if threads is null | |
4145 if (threads == NULL) { | |
4146 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4147 } | |
4148 | |
4149 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4150 objArrayHandle ah(THREAD, a); | |
4151 int num_threads = ah->length(); | |
4152 // check if threads is non-empty array | |
4153 if (num_threads == 0) { | |
4154 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4155 } | |
4156 | |
4157 // check if threads is not an array of objects of Thread class | |
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4158 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
1142 | 4159 if (k != SystemDictionary::Thread_klass()) { |
0 | 4160 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4161 } | |
4162 | |
4163 ResourceMark rm(THREAD); | |
4164 | |
4165 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4166 for (int i = 0; i < num_threads; i++) { | |
4167 oop thread_obj = ah->obj_at(i); | |
4168 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4169 thread_handle_array->append(h); | |
4170 } | |
4171 | |
4172 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4173 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4174 | |
4175 JVM_END | |
4176 | |
4177 // JVM monitoring and management support | |
4178 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4179 return Management::get_jmm_interface(version); | |
4180 JVM_END | |
4181 | |
4182 // com.sun.tools.attach.VirtualMachine agent properties support | |
4183 // | |
4184 // Initialize the agent properties with the properties maintained in the VM | |
4185 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4186 JVMWrapper("JVM_InitAgentProperties"); | |
4187 ResourceMark rm; | |
4188 | |
4189 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4190 | |
4191 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4192 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4193 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4194 return properties; | |
4195 JVM_END | |
4196 | |
4197 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4198 { | |
4199 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4200 JvmtiVMObjectAllocEventCollector oam; | |
4201 | |
4202 if (ofClass == NULL) { | |
4203 return NULL; | |
4204 } | |
4205 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4206 // Special handling for primitive objects | |
4207 if (java_lang_Class::is_primitive(mirror())) { | |
4208 return NULL; | |
4209 } | |
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4210 Klass* k = java_lang_Class::as_Klass(mirror()); |
6983 | 4211 if (!k->oop_is_instance()) { |
0 | 4212 return NULL; |
4213 } | |
4214 instanceKlassHandle ik_h(THREAD, k); | |
4215 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4216 if (encl_method_class_idx == 0) { | |
4217 return NULL; | |
4218 } | |
1142 | 4219 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4220 objArrayHandle dest(THREAD, dest_o); |
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4221 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
6983 | 4222 dest->obj_at_put(0, enc_k->java_mirror()); |
0 | 4223 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
4224 if (encl_method_method_idx != 0) { | |
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4225 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4226 extract_low_short_from_int( |
4227 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4228 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4229 dest->obj_at_put(1, str()); | |
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|
4230 sym = ik_h->constants()->symbol_at( |
0 | 4231 extract_high_short_from_int( |
4232 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4233 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4234 dest->obj_at_put(2, str()); | |
4235 } | |
4236 return (jobjectArray) JNIHandles::make_local(dest()); | |
4237 } | |
4238 JVM_END | |
4239 | |
4240 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4241 jint javaThreadState)) | |
4242 { | |
4243 // If new thread states are added in future JDK and VM versions, | |
4244 // this should check if the JDK version is compatible with thread | |
4245 // states supported by the VM. Return NULL if not compatible. | |
4246 // | |
4247 // This function must map the VM java_lang_Thread::ThreadStatus | |
4248 // to the Java thread state that the JDK supports. | |
4249 // | |
4250 | |
4251 typeArrayHandle values_h; | |
4252 switch (javaThreadState) { | |
4253 case JAVA_THREAD_STATE_NEW : { | |
4254 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4255 values_h = typeArrayHandle(THREAD, r); | |
4256 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4257 break; | |
4258 } | |
4259 case JAVA_THREAD_STATE_RUNNABLE : { | |
4260 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4261 values_h = typeArrayHandle(THREAD, r); | |
4262 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4263 break; | |
4264 } | |
4265 case JAVA_THREAD_STATE_BLOCKED : { | |
4266 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4267 values_h = typeArrayHandle(THREAD, r); | |
4268 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4269 break; | |
4270 } | |
4271 case JAVA_THREAD_STATE_WAITING : { | |
4272 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4273 values_h = typeArrayHandle(THREAD, r); | |
4274 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4275 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4276 break; | |
4277 } | |
4278 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4279 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4280 values_h = typeArrayHandle(THREAD, r); | |
4281 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4282 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4283 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4284 break; | |
4285 } | |
4286 case JAVA_THREAD_STATE_TERMINATED : { | |
4287 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4288 values_h = typeArrayHandle(THREAD, r); | |
4289 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4290 break; | |
4291 } | |
4292 default: | |
4293 // Unknown state - probably incompatible JDK version | |
4294 return NULL; | |
4295 } | |
4296 | |
4297 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4298 } | |
4299 JVM_END | |
4300 | |
4301 | |
4302 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4303 jint javaThreadState, | |
4304 jintArray values)) | |
4305 { | |
4306 // If new thread states are added in future JDK and VM versions, | |
4307 // this should check if the JDK version is compatible with thread | |
4308 // states supported by the VM. Return NULL if not compatible. | |
4309 // | |
4310 // This function must map the VM java_lang_Thread::ThreadStatus | |
4311 // to the Java thread state that the JDK supports. | |
4312 // | |
4313 | |
4314 ResourceMark rm; | |
4315 | |
4316 // Check if threads is null | |
4317 if (values == NULL) { | |
4318 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4319 } | |
4320 | |
4321 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4322 typeArrayHandle values_h(THREAD, v); | |
4323 | |
4324 objArrayHandle names_h; | |
4325 switch (javaThreadState) { | |
4326 case JAVA_THREAD_STATE_NEW : { | |
4327 assert(values_h->length() == 1 && | |
4328 values_h->int_at(0) == java_lang_Thread::NEW, | |
4329 "Invalid threadStatus value"); | |
4330 | |
1142 | 4331 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4332 1, /* only 1 substate */ |
4333 CHECK_NULL); | |
4334 names_h = objArrayHandle(THREAD, r); | |
4335 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4336 names_h->obj_at_put(0, name()); | |
4337 break; | |
4338 } | |
4339 case JAVA_THREAD_STATE_RUNNABLE : { | |
4340 assert(values_h->length() == 1 && | |
4341 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4342 "Invalid threadStatus value"); | |
4343 | |
1142 | 4344 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4345 1, /* only 1 substate */ |
4346 CHECK_NULL); | |
4347 names_h = objArrayHandle(THREAD, r); | |
4348 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4349 names_h->obj_at_put(0, name()); | |
4350 break; | |
4351 } | |
4352 case JAVA_THREAD_STATE_BLOCKED : { | |
4353 assert(values_h->length() == 1 && | |
4354 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4355 "Invalid threadStatus value"); | |
4356 | |
1142 | 4357 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4358 1, /* only 1 substate */ |
4359 CHECK_NULL); | |
4360 names_h = objArrayHandle(THREAD, r); | |
4361 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4362 names_h->obj_at_put(0, name()); | |
4363 break; | |
4364 } | |
4365 case JAVA_THREAD_STATE_WAITING : { | |
4366 assert(values_h->length() == 2 && | |
4367 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4368 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4369 "Invalid threadStatus value"); | |
1142 | 4370 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4371 2, /* number of substates */ |
4372 CHECK_NULL); | |
4373 names_h = objArrayHandle(THREAD, r); | |
4374 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4375 CHECK_NULL); | |
4376 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4377 CHECK_NULL); | |
4378 names_h->obj_at_put(0, name0()); | |
4379 names_h->obj_at_put(1, name1()); | |
4380 break; | |
4381 } | |
4382 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4383 assert(values_h->length() == 3 && | |
4384 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4385 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4386 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4387 "Invalid threadStatus value"); | |
1142 | 4388 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4389 3, /* number of substates */ |
4390 CHECK_NULL); | |
4391 names_h = objArrayHandle(THREAD, r); | |
4392 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4393 CHECK_NULL); | |
4394 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4395 CHECK_NULL); | |
4396 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4397 CHECK_NULL); | |
4398 names_h->obj_at_put(0, name0()); | |
4399 names_h->obj_at_put(1, name1()); | |
4400 names_h->obj_at_put(2, name2()); | |
4401 break; | |
4402 } | |
4403 case JAVA_THREAD_STATE_TERMINATED : { | |
4404 assert(values_h->length() == 1 && | |
4405 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4406 "Invalid threadStatus value"); | |
1142 | 4407 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4408 1, /* only 1 substate */ |
4409 CHECK_NULL); | |
4410 names_h = objArrayHandle(THREAD, r); | |
4411 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4412 names_h->obj_at_put(0, name()); | |
4413 break; | |
4414 } | |
4415 default: | |
4416 // Unknown state - probably incompatible JDK version | |
4417 return NULL; | |
4418 } | |
4419 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4420 } | |
4421 JVM_END | |
4422 | |
4423 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4424 { | |
4425 memset(info, 0, sizeof(info_size)); | |
4426 | |
4427 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4428 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4429 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4430 | |
4431 // when we add a new capability in the jvm_version_info struct, we should also | |
4432 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4433 // counter defined in runtimeService.cpp. | |
4434 info->is_attachable = AttachListener::is_attach_supported(); | |
4435 } | |
4436 JVM_END |