0
|
1 /*
|
|
2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
|
|
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 *
|
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
25 # include "incls/_precompiled.incl"
|
|
26 # include "incls/_jni.cpp.incl"
|
|
27
|
|
28 static jint CurrentVersion = JNI_VERSION_1_6;
|
|
29
|
|
30
|
|
31 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
|
|
32 // '-return' probe regardless of the return path is taken out of the function.
|
|
33 // Methods that have multiple return paths use this to avoid having to
|
|
34 // instrument each return path. Methods that use CHECK or THROW must use this
|
|
35 // since those macros can cause an immedate uninstrumented return.
|
|
36 //
|
|
37 // In order to get the return value, a reference to the variable containing
|
|
38 // the return value must be passed to the contructor of the object, and
|
|
39 // the return value must be set before return (since the mark object has
|
|
40 // a reference to it).
|
|
41 //
|
|
42 // Example:
|
|
43 // DT_RETURN_MARK_DECL(SomeFunc, int);
|
|
44 // JNI_ENTRY(int, SomeFunc, ...)
|
|
45 // int return_value = 0;
|
|
46 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
|
|
47 // foo(CHECK_0)
|
|
48 // return_value = 5;
|
|
49 // return return_value;
|
|
50 // JNI_END
|
|
51 #define DT_RETURN_MARK_DECL(name, type) \
|
|
52 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
|
|
53 DTRACE_ONLY( \
|
|
54 class DTraceReturnProbeMark_##name { \
|
|
55 public: \
|
|
56 const type& _ret_ref; \
|
|
57 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
|
|
58 ~DTraceReturnProbeMark_##name() { \
|
|
59 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
|
|
60 } \
|
|
61 } \
|
|
62 )
|
|
63 // Void functions are simpler since there's no return value
|
|
64 #define DT_VOID_RETURN_MARK_DECL(name) \
|
|
65 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
|
|
66 DTRACE_ONLY( \
|
|
67 class DTraceReturnProbeMark_##name { \
|
|
68 public: \
|
|
69 ~DTraceReturnProbeMark_##name() { \
|
|
70 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
|
|
71 } \
|
|
72 } \
|
|
73 )
|
|
74
|
|
75
|
|
76 // Place these macros in the function to mark the return. Non-void
|
|
77 // functions need the type and address of the return value.
|
|
78 #define DT_RETURN_MARK(name, type, ref) \
|
|
79 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
|
|
80 #define DT_VOID_RETURN_MARK(name) \
|
|
81 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
|
|
82
|
|
83
|
|
84 // Use these to select distinct code for floating-point vs. non-floating point
|
|
85 // situations. Used from within common macros where we need slightly
|
|
86 // different behavior for Float/Double
|
|
87 #define FP_SELECT_Boolean(intcode, fpcode) intcode
|
|
88 #define FP_SELECT_Byte(intcode, fpcode) intcode
|
|
89 #define FP_SELECT_Char(intcode, fpcode) intcode
|
|
90 #define FP_SELECT_Short(intcode, fpcode) intcode
|
|
91 #define FP_SELECT_Object(intcode, fpcode) intcode
|
|
92 #define FP_SELECT_Int(intcode, fpcode) intcode
|
|
93 #define FP_SELECT_Long(intcode, fpcode) intcode
|
|
94 #define FP_SELECT_Float(intcode, fpcode) fpcode
|
|
95 #define FP_SELECT_Double(intcode, fpcode) fpcode
|
|
96 #define FP_SELECT(TypeName, intcode, fpcode) \
|
|
97 FP_SELECT_##TypeName(intcode, fpcode)
|
|
98
|
|
99 #define COMMA ,
|
|
100
|
|
101 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
|
|
102 // (dtrace doesn't do FP yet)
|
|
103 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
|
|
104 FP_SELECT(TypeName, \
|
|
105 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
|
|
106 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
|
|
107 FP_SELECT(TypeName, \
|
|
108 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
|
|
109
|
|
110
|
|
111 // out-of-line helpers for class jfieldIDWorkaround:
|
|
112
|
|
113 bool jfieldIDWorkaround::is_valid_jfieldID(klassOop k, jfieldID id) {
|
|
114 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
|
|
115 uintptr_t as_uint = (uintptr_t) id;
|
|
116 intptr_t offset = raw_instance_offset(id);
|
|
117 if (is_checked_jfieldID(id)) {
|
|
118 if (!klass_hash_ok(k, id)) {
|
|
119 return false;
|
|
120 }
|
|
121 }
|
|
122 return instanceKlass::cast(k)->contains_field_offset(offset);
|
|
123 } else {
|
|
124 JNIid* result = (JNIid*) id;
|
|
125 #ifdef ASSERT
|
|
126 return result != NULL && result->is_static_field_id();
|
|
127 #else
|
|
128 return result != NULL;
|
|
129 #endif
|
|
130 }
|
|
131 }
|
|
132
|
|
133
|
|
134 intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) {
|
|
135 if (offset <= small_offset_mask) {
|
|
136 klassOop field_klass = k;
|
|
137 klassOop super_klass = Klass::cast(field_klass)->super();
|
|
138 while (instanceKlass::cast(super_klass)->contains_field_offset(offset)) {
|
|
139 field_klass = super_klass; // super contains the field also
|
|
140 super_klass = Klass::cast(field_klass)->super();
|
|
141 }
|
|
142 debug_only(No_Safepoint_Verifier nosafepoint;)
|
|
143 uintptr_t klass_hash = field_klass->identity_hash();
|
|
144 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
|
|
145 } else {
|
|
146 #if 0
|
|
147 #ifndef PRODUCT
|
|
148 {
|
|
149 ResourceMark rm;
|
|
150 warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
|
|
151 }
|
|
152 #endif
|
|
153 #endif
|
|
154 return 0;
|
|
155 }
|
|
156 }
|
|
157
|
|
158 bool jfieldIDWorkaround::klass_hash_ok(klassOop k, jfieldID id) {
|
|
159 uintptr_t as_uint = (uintptr_t) id;
|
|
160 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
|
|
161 do {
|
|
162 debug_only(No_Safepoint_Verifier nosafepoint;)
|
|
163 // Could use a non-blocking query for identity_hash here...
|
|
164 if ((k->identity_hash() & klass_mask) == klass_hash)
|
|
165 return true;
|
|
166 k = Klass::cast(k)->super();
|
|
167 } while (k != NULL);
|
|
168 return false;
|
|
169 }
|
|
170
|
|
171 void jfieldIDWorkaround::verify_instance_jfieldID(klassOop k, jfieldID id) {
|
|
172 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
|
|
173 uintptr_t as_uint = (uintptr_t) id;
|
|
174 intptr_t offset = raw_instance_offset(id);
|
|
175 if (VerifyJNIFields) {
|
|
176 if (is_checked_jfieldID(id)) {
|
|
177 guarantee(klass_hash_ok(k, id),
|
|
178 "Bug in native code: jfieldID class must match object");
|
|
179 } else {
|
|
180 #if 0
|
|
181 #ifndef PRODUCT
|
|
182 if (Verbose) {
|
|
183 ResourceMark rm;
|
|
184 warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
|
|
185 }
|
|
186 #endif
|
|
187 #endif
|
|
188 }
|
|
189 }
|
|
190 guarantee(instanceKlass::cast(k)->contains_field_offset(offset),
|
|
191 "Bug in native code: jfieldID offset must address interior of object");
|
|
192 }
|
|
193
|
|
194 // Pick a reasonable higher bound for local capacity requested
|
|
195 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
|
|
196 // high because a test (or very unusual application) may try to allocate
|
|
197 // that many handles and run out of swap space. An implementation is
|
|
198 // permitted to allocate more handles than the ensured capacity, so this
|
|
199 // value is set high enough to prevent compatibility problems.
|
|
200 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
|
|
201
|
|
202
|
|
203 // Wrapper to trace JNI functions
|
|
204
|
|
205 #ifdef ASSERT
|
|
206 Histogram* JNIHistogram;
|
|
207 static volatile jint JNIHistogram_lock = 0;
|
|
208
|
|
209 class JNITraceWrapper : public StackObj {
|
|
210 public:
|
|
211 JNITraceWrapper(const char* format, ...) {
|
|
212 if (TraceJNICalls) {
|
|
213 va_list ap;
|
|
214 va_start(ap, format);
|
|
215 tty->print("JNI ");
|
|
216 tty->vprint_cr(format, ap);
|
|
217 va_end(ap);
|
|
218 }
|
|
219 }
|
|
220 };
|
|
221
|
|
222 class JNIHistogramElement : public HistogramElement {
|
|
223 public:
|
|
224 JNIHistogramElement(const char* name);
|
|
225 };
|
|
226
|
|
227 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
|
|
228 _name = elementName;
|
|
229 uintx count = 0;
|
|
230
|
|
231 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
|
|
232 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
|
|
233 count +=1;
|
|
234 if ( (WarnOnStalledSpinLock > 0)
|
|
235 && (count % WarnOnStalledSpinLock == 0)) {
|
|
236 warning("JNIHistogram_lock seems to be stalled");
|
|
237 }
|
|
238 }
|
|
239 }
|
|
240
|
|
241
|
|
242 if(JNIHistogram == NULL)
|
|
243 JNIHistogram = new Histogram("JNI Call Counts",100);
|
|
244
|
|
245 JNIHistogram->add_element(this);
|
|
246 Atomic::dec(&JNIHistogram_lock);
|
|
247 }
|
|
248
|
|
249 #define JNICountWrapper(arg) \
|
|
250 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
|
|
251 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
|
|
252 if (e != NULL) e->increment_count()
|
|
253 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
|
|
254 #else
|
|
255 #define JNIWrapper(arg)
|
|
256 #endif
|
|
257
|
|
258
|
|
259 // Implementation of JNI entries
|
|
260
|
|
261 DT_RETURN_MARK_DECL(DefineClass, jclass);
|
|
262
|
|
263 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
|
|
264 const jbyte *buf, jsize bufLen))
|
|
265 JNIWrapper("DefineClass");
|
|
266
|
|
267 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
|
|
268 env, name, loaderRef, buf, bufLen);
|
|
269 jclass cls = NULL;
|
|
270 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
|
|
271
|
|
272 // Since exceptions can be thrown, class initialization can take place
|
|
273 // if name is NULL no check for class name in .class stream has to be made.
|
|
274 symbolHandle class_name;
|
|
275 if (name != NULL) {
|
|
276 const int str_len = (int)strlen(name);
|
|
277 if (str_len > symbolOopDesc::max_length()) {
|
|
278 // It's impossible to create this class; the name cannot fit
|
|
279 // into the constant pool.
|
|
280 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
|
|
281 }
|
|
282 class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL);
|
|
283 }
|
|
284
|
|
285 ResourceMark rm(THREAD);
|
|
286 ClassFileStream st((u1*) buf, bufLen, NULL);
|
|
287 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
|
|
288
|
|
289 if (UsePerfData && !class_loader.is_null()) {
|
|
290 // check whether the current caller thread holds the lock or not.
|
|
291 // If not, increment the corresponding counter
|
|
292 if (ObjectSynchronizer::
|
|
293 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
|
|
294 ObjectSynchronizer::owner_self) {
|
|
295 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
|
|
296 }
|
|
297 }
|
|
298 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
|
|
299 Handle(), &st, CHECK_NULL);
|
|
300
|
|
301 cls = (jclass)JNIHandles::make_local(
|
|
302 env, Klass::cast(k)->java_mirror());
|
|
303 return cls;
|
|
304 JNI_END
|
|
305
|
|
306
|
|
307
|
|
308 static bool first_time_FindClass = true;
|
|
309
|
|
310 DT_RETURN_MARK_DECL(FindClass, jclass);
|
|
311
|
|
312 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
|
|
313 JNIWrapper("FindClass");
|
|
314 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
|
|
315
|
|
316 jclass result = NULL;
|
|
317 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
|
|
318
|
|
319 // Remember if we are the first invocation of jni_FindClass
|
|
320 bool first_time = first_time_FindClass;
|
|
321 first_time_FindClass = false;
|
|
322
|
|
323 // Sanity check the name: it cannot be null or larger than the maximum size
|
|
324 // name we can fit in the constant pool.
|
|
325 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) {
|
|
326 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
|
|
327 }
|
|
328
|
|
329 //%note jni_3
|
|
330 Handle loader;
|
|
331 Handle protection_domain;
|
|
332 // Find calling class
|
|
333 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
|
|
334 if (k.not_null()) {
|
|
335 loader = Handle(THREAD, k->class_loader());
|
|
336 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
|
|
337 // in the correct class context.
|
|
338 if (loader.is_null() &&
|
|
339 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
|
|
340 JavaValue result(T_OBJECT);
|
|
341 JavaCalls::call_static(&result, k,
|
|
342 vmSymbolHandles::getFromClass_name(),
|
|
343 vmSymbolHandles::void_class_signature(),
|
|
344 thread);
|
|
345 if (HAS_PENDING_EXCEPTION) {
|
|
346 Handle ex(thread, thread->pending_exception());
|
|
347 CLEAR_PENDING_EXCEPTION;
|
|
348 THROW_HANDLE_0(ex);
|
|
349 }
|
|
350 oop mirror = (oop) result.get_jobject();
|
|
351 loader = Handle(THREAD,
|
|
352 instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->class_loader());
|
|
353 protection_domain = Handle(THREAD,
|
|
354 instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->protection_domain());
|
|
355 }
|
|
356 } else {
|
|
357 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
|
|
358 loader = Handle(THREAD, SystemDictionary::java_system_loader());
|
|
359 }
|
|
360
|
|
361 symbolHandle sym = oopFactory::new_symbol_handle(name, CHECK_NULL);
|
|
362 result = find_class_from_class_loader(env, sym, true, loader,
|
|
363 protection_domain, true, thread);
|
|
364
|
|
365 // If we were the first invocation of jni_FindClass, we enable compilation again
|
|
366 // rather than just allowing invocation counter to overflow and decay.
|
|
367 // Controlled by flag DelayCompilationDuringStartup.
|
|
368 if (first_time && !CompileTheWorld)
|
|
369 CompilationPolicy::completed_vm_startup();
|
|
370
|
|
371 return result;
|
|
372 JNI_END
|
|
373
|
|
374 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
|
|
375
|
|
376 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
|
|
377 JNIWrapper("FromReflectedMethod");
|
|
378 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
|
|
379 jmethodID ret = NULL;
|
|
380 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
|
|
381
|
|
382 // method is a handle to a java.lang.reflect.Method object
|
|
383 oop reflected = JNIHandles::resolve_non_null(method);
|
|
384 oop mirror = NULL;
|
|
385 int slot = 0;
|
|
386
|
|
387 if (reflected->klass() == SystemDictionary::reflect_constructor_klass()) {
|
|
388 mirror = java_lang_reflect_Constructor::clazz(reflected);
|
|
389 slot = java_lang_reflect_Constructor::slot(reflected);
|
|
390 } else {
|
|
391 assert(reflected->klass() == SystemDictionary::reflect_method_klass(), "wrong type");
|
|
392 mirror = java_lang_reflect_Method::clazz(reflected);
|
|
393 slot = java_lang_reflect_Method::slot(reflected);
|
|
394 }
|
|
395 klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
396
|
|
397 KlassHandle k1(THREAD, k);
|
|
398 // Make sure class is initialized before handing id's out to methods
|
|
399 Klass::cast(k1())->initialize(CHECK_NULL);
|
|
400 methodOop m = instanceKlass::cast(k1())->method_with_idnum(slot);
|
|
401 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
|
|
402 return ret;
|
|
403 JNI_END
|
|
404
|
|
405 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
|
|
406
|
|
407 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
|
|
408 JNIWrapper("FromReflectedField");
|
|
409 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
|
|
410 jfieldID ret = NULL;
|
|
411 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
|
|
412
|
|
413 // field is a handle to a java.lang.reflect.Field object
|
|
414 oop reflected = JNIHandles::resolve_non_null(field);
|
|
415 oop mirror = java_lang_reflect_Field::clazz(reflected);
|
|
416 klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
417 int slot = java_lang_reflect_Field::slot(reflected);
|
|
418 int modifiers = java_lang_reflect_Field::modifiers(reflected);
|
|
419
|
|
420 KlassHandle k1(THREAD, k);
|
|
421 // Make sure class is initialized before handing id's out to fields
|
|
422 Klass::cast(k1())->initialize(CHECK_NULL);
|
|
423
|
|
424 // First check if this is a static field
|
|
425 if (modifiers & JVM_ACC_STATIC) {
|
|
426 intptr_t offset = instanceKlass::cast(k1())->offset_from_fields( slot );
|
|
427 JNIid* id = instanceKlass::cast(k1())->jni_id_for(offset);
|
|
428 assert(id != NULL, "corrupt Field object");
|
|
429 debug_only(id->set_is_static_field_id();)
|
|
430 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
|
|
431 ret = jfieldIDWorkaround::to_static_jfieldID(id);
|
|
432 return ret;
|
|
433 }
|
|
434
|
|
435 // The slot is the index of the field description in the field-array
|
|
436 // The jfieldID is the offset of the field within the object
|
|
437 // It may also have hash bits for k, if VerifyJNIFields is turned on.
|
|
438 intptr_t offset = instanceKlass::cast(k1())->offset_from_fields( slot );
|
|
439 assert(instanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
|
|
440 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
|
|
441 return ret;
|
|
442 JNI_END
|
|
443
|
|
444 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
|
|
445
|
|
446 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
|
|
447 JNIWrapper("ToReflectedMethod");
|
|
448 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
|
|
449 jobject ret = NULL;
|
|
450 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
|
|
451
|
|
452 methodHandle m (THREAD, JNIHandles::resolve_jmethod_id(method_id));
|
|
453 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
|
|
454 oop reflection_method;
|
|
455 if (m->is_initializer()) {
|
|
456 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
|
|
457 } else {
|
|
458 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
|
|
459 }
|
|
460 ret = JNIHandles::make_local(env, reflection_method);
|
|
461 return ret;
|
|
462 JNI_END
|
|
463
|
|
464 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
|
|
465
|
|
466 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
|
|
467 JNIWrapper("GetSuperclass");
|
|
468 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
|
|
469 jclass obj = NULL;
|
|
470 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
|
|
471
|
|
472 oop mirror = JNIHandles::resolve_non_null(sub);
|
|
473 // primitive classes return NULL
|
|
474 if (java_lang_Class::is_primitive(mirror)) return NULL;
|
|
475
|
|
476 // Rules of Class.getSuperClass as implemented by KLass::java_super:
|
|
477 // arrays return Object
|
|
478 // interfaces return NULL
|
|
479 // proper classes return Klass::super()
|
|
480 klassOop k = java_lang_Class::as_klassOop(mirror);
|
|
481 if (Klass::cast(k)->is_interface()) return NULL;
|
|
482
|
|
483 // return mirror for superclass
|
|
484 klassOop super = Klass::cast(k)->java_super();
|
|
485 // super2 is the value computed by the compiler's getSuperClass intrinsic:
|
|
486 debug_only(klassOop super2 = ( Klass::cast(k)->oop_is_javaArray()
|
|
487 ? SystemDictionary::object_klass()
|
|
488 : Klass::cast(k)->super() ) );
|
|
489 assert(super == super2,
|
|
490 "java_super computation depends on interface, array, other super");
|
|
491 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
|
|
492 return obj;
|
|
493 JNI_END
|
|
494
|
|
495 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
|
|
496 JNIWrapper("IsSubclassOf");
|
|
497 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
|
|
498 oop sub_mirror = JNIHandles::resolve_non_null(sub);
|
|
499 oop super_mirror = JNIHandles::resolve_non_null(super);
|
|
500 if (java_lang_Class::is_primitive(sub_mirror) ||
|
|
501 java_lang_Class::is_primitive(super_mirror)) {
|
|
502 jboolean ret = (sub_mirror == super_mirror);
|
|
503 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
|
|
504 return ret;
|
|
505 }
|
|
506 klassOop sub_klass = java_lang_Class::as_klassOop(sub_mirror);
|
|
507 klassOop super_klass = java_lang_Class::as_klassOop(super_mirror);
|
|
508 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
|
|
509 jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
|
|
510 JNI_TRUE : JNI_FALSE;
|
|
511 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
|
|
512 return ret;
|
|
513 JNI_END
|
|
514
|
|
515 DT_RETURN_MARK_DECL(Throw, jint);
|
|
516
|
|
517 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
|
|
518 JNIWrapper("Throw");
|
|
519 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
|
|
520 jint ret = JNI_OK;
|
|
521 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
|
|
522
|
|
523 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
|
|
524 ShouldNotReachHere();
|
|
525 JNI_END
|
|
526
|
|
527 DT_RETURN_MARK_DECL(ThrowNew, jint);
|
|
528
|
|
529 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
|
|
530 JNIWrapper("ThrowNew");
|
|
531 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
|
|
532 jint ret = JNI_OK;
|
|
533 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
|
|
534
|
|
535 instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
536 symbolHandle name = symbolHandle(THREAD, k->name());
|
|
537 Handle class_loader (THREAD, k->class_loader());
|
|
538 Handle protection_domain (THREAD, k->protection_domain());
|
|
539 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
|
|
540 ShouldNotReachHere();
|
|
541 JNI_END
|
|
542
|
|
543
|
|
544 // JNI functions only transform a pending async exception to a synchronous
|
|
545 // exception in ExceptionOccurred and ExceptionCheck calls, since
|
|
546 // delivering an async exception in other places won't change the native
|
|
547 // code's control flow and would be harmful when native code further calls
|
|
548 // JNI functions with a pending exception. Async exception is also checked
|
|
549 // during the call, so ExceptionOccurred/ExceptionCheck won't return
|
|
550 // false but deliver the async exception at the very end during
|
|
551 // state transition.
|
|
552
|
|
553 static void jni_check_async_exceptions(JavaThread *thread) {
|
|
554 assert(thread == Thread::current(), "must be itself");
|
|
555 thread->check_and_handle_async_exceptions();
|
|
556 }
|
|
557
|
|
558 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
|
|
559 JNIWrapper("ExceptionOccurred");
|
|
560 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
|
|
561 jni_check_async_exceptions(thread);
|
|
562 oop exception = thread->pending_exception();
|
|
563 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
|
|
564 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
|
|
565 return ret;
|
|
566 JNI_END
|
|
567
|
|
568
|
|
569 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
|
|
570 JNIWrapper("ExceptionDescribe");
|
|
571 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
|
|
572 if (thread->has_pending_exception()) {
|
|
573 Handle ex(thread, thread->pending_exception());
|
|
574 thread->clear_pending_exception();
|
|
575 if (ex->is_a(SystemDictionary::threaddeath_klass())) {
|
|
576 // Don't print anything if we are being killed.
|
|
577 } else {
|
|
578 jio_fprintf(defaultStream::error_stream(), "Exception ");
|
|
579 if (thread != NULL && thread->threadObj() != NULL) {
|
|
580 ResourceMark rm(THREAD);
|
|
581 jio_fprintf(defaultStream::error_stream(),
|
|
582 "in thread \"%s\" ", thread->get_thread_name());
|
|
583 }
|
|
584 if (ex->is_a(SystemDictionary::throwable_klass())) {
|
|
585 JavaValue result(T_VOID);
|
|
586 JavaCalls::call_virtual(&result,
|
|
587 ex,
|
|
588 KlassHandle(THREAD,
|
|
589 SystemDictionary::throwable_klass()),
|
|
590 vmSymbolHandles::printStackTrace_name(),
|
|
591 vmSymbolHandles::void_method_signature(),
|
|
592 THREAD);
|
|
593 // If an exception is thrown in the call it gets thrown away. Not much
|
|
594 // we can do with it. The native code that calls this, does not check
|
|
595 // for the exception - hence, it might still be in the thread when DestroyVM gets
|
|
596 // called, potentially causing a few asserts to trigger - since no pending exception
|
|
597 // is expected.
|
|
598 CLEAR_PENDING_EXCEPTION;
|
|
599 } else {
|
|
600 ResourceMark rm(THREAD);
|
|
601 jio_fprintf(defaultStream::error_stream(),
|
|
602 ". Uncaught exception of type %s.",
|
|
603 Klass::cast(ex->klass())->external_name());
|
|
604 }
|
|
605 }
|
|
606 }
|
|
607 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
|
|
608 JNI_END
|
|
609
|
|
610
|
|
611 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
|
|
612 JNIWrapper("ExceptionClear");
|
|
613 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
|
|
614
|
|
615 // The jni code might be using this API to clear java thrown exception.
|
|
616 // So just mark jvmti thread exception state as exception caught.
|
|
617 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
|
|
618 if (state != NULL && state->is_exception_detected()) {
|
|
619 state->set_exception_caught();
|
|
620 }
|
|
621 thread->clear_pending_exception();
|
|
622 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
|
|
623 JNI_END
|
|
624
|
|
625
|
|
626 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
|
|
627 JNIWrapper("FatalError");
|
|
628 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
|
|
629 tty->print_cr("FATAL ERROR in native method: %s", msg);
|
|
630 thread->print_stack();
|
|
631 os::abort(false); // Prevent core dump, causes a jck failure.
|
|
632 JNI_END
|
|
633
|
|
634
|
|
635 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
|
|
636 JNIWrapper("PushLocalFrame");
|
|
637 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
|
|
638 //%note jni_11
|
|
639 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
|
|
640 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
|
|
641 return JNI_ERR;
|
|
642 }
|
|
643 JNIHandleBlock* old_handles = thread->active_handles();
|
|
644 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
|
|
645 assert(new_handles != NULL, "should not be NULL");
|
|
646 new_handles->set_pop_frame_link(old_handles);
|
|
647 thread->set_active_handles(new_handles);
|
|
648 jint ret = JNI_OK;
|
|
649 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
|
|
650 return ret;
|
|
651 JNI_END
|
|
652
|
|
653
|
|
654 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
|
|
655 JNIWrapper("PopLocalFrame");
|
|
656 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
|
|
657 //%note jni_11
|
|
658 Handle result_handle(thread, JNIHandles::resolve(result));
|
|
659 JNIHandleBlock* old_handles = thread->active_handles();
|
|
660 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
|
|
661 if (new_handles != NULL) {
|
|
662 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
|
|
663 // This way code will still work if PopLocalFrame is called without a corresponding
|
|
664 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
|
|
665 // the release_block call will release the blocks.
|
|
666 thread->set_active_handles(new_handles);
|
|
667 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
|
|
668 JNIHandleBlock::release_block(old_handles, thread); // may block
|
|
669 result = JNIHandles::make_local(thread, result_handle());
|
|
670 }
|
|
671 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
|
|
672 return result;
|
|
673 JNI_END
|
|
674
|
|
675
|
|
676 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
|
|
677 JNIWrapper("NewGlobalRef");
|
|
678 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
|
|
679 Handle ref_handle(thread, JNIHandles::resolve(ref));
|
|
680 jobject ret = JNIHandles::make_global(ref_handle);
|
|
681 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
|
|
682 return ret;
|
|
683 JNI_END
|
|
684
|
|
685 // Must be JNI_ENTRY (with HandleMark)
|
|
686 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
|
|
687 JNIWrapper("DeleteGlobalRef");
|
|
688 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
|
|
689 JNIHandles::destroy_global(ref);
|
|
690 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
|
|
691 JNI_END
|
|
692
|
|
693 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
|
|
694 JNIWrapper("DeleteLocalRef");
|
|
695 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
|
|
696 JNIHandles::destroy_local(obj);
|
|
697 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
|
|
698 JNI_END
|
|
699
|
|
700 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
|
|
701 JNIWrapper("IsSameObject");
|
|
702 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
|
|
703 oop a = JNIHandles::resolve(r1);
|
|
704 oop b = JNIHandles::resolve(r2);
|
|
705 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
|
|
706 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
|
|
707 return ret;
|
|
708 JNI_END
|
|
709
|
|
710
|
|
711 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
|
|
712 JNIWrapper("NewLocalRef");
|
|
713 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
|
|
714 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
|
|
715 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
|
|
716 return ret;
|
|
717 JNI_END
|
|
718
|
|
719 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
|
|
720 JNIWrapper("EnsureLocalCapacity");
|
|
721 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
|
|
722 jint ret;
|
|
723 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
|
|
724 ret = JNI_OK;
|
|
725 } else {
|
|
726 ret = JNI_ERR;
|
|
727 }
|
|
728 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
|
|
729 return ret;
|
|
730 JNI_END
|
|
731
|
|
732 // Return the Handle Type
|
|
733 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
|
|
734 JNIWrapper("GetObjectRefType");
|
|
735 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
|
|
736 jobjectRefType ret;
|
|
737 if (JNIHandles::is_local_handle(thread, obj) ||
|
|
738 JNIHandles::is_frame_handle(thread, obj))
|
|
739 ret = JNILocalRefType;
|
|
740 else if (JNIHandles::is_global_handle(obj))
|
|
741 ret = JNIGlobalRefType;
|
|
742 else if (JNIHandles::is_weak_global_handle(obj))
|
|
743 ret = JNIWeakGlobalRefType;
|
|
744 else
|
|
745 ret = JNIInvalidRefType;
|
|
746 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
|
|
747 return ret;
|
|
748 JNI_END
|
|
749
|
|
750
|
|
751 class JNI_ArgumentPusher : public SignatureIterator {
|
|
752 protected:
|
|
753 JavaCallArguments* _arguments;
|
|
754
|
|
755 virtual void get_bool () = 0;
|
|
756 virtual void get_char () = 0;
|
|
757 virtual void get_short () = 0;
|
|
758 virtual void get_byte () = 0;
|
|
759 virtual void get_int () = 0;
|
|
760 virtual void get_long () = 0;
|
|
761 virtual void get_float () = 0;
|
|
762 virtual void get_double () = 0;
|
|
763 virtual void get_object () = 0;
|
|
764
|
|
765 JNI_ArgumentPusher(Thread *thread, symbolOop signature)
|
|
766 : SignatureIterator(thread, signature) {
|
|
767 this->_return_type = T_ILLEGAL;
|
|
768 _arguments = NULL;
|
|
769 }
|
|
770
|
|
771 public:
|
|
772 virtual void iterate( uint64_t fingerprint ) = 0;
|
|
773
|
|
774 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
|
|
775
|
|
776 inline void do_bool() { if (!is_return_type()) get_bool(); }
|
|
777 inline void do_char() { if (!is_return_type()) get_char(); }
|
|
778 inline void do_short() { if (!is_return_type()) get_short(); }
|
|
779 inline void do_byte() { if (!is_return_type()) get_byte(); }
|
|
780 inline void do_int() { if (!is_return_type()) get_int(); }
|
|
781 inline void do_long() { if (!is_return_type()) get_long(); }
|
|
782 inline void do_float() { if (!is_return_type()) get_float(); }
|
|
783 inline void do_double() { if (!is_return_type()) get_double(); }
|
|
784 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
|
|
785 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
|
|
786 inline void do_void() { }
|
|
787
|
|
788 JavaCallArguments* arguments() { return _arguments; }
|
|
789 void push_receiver(Handle h) { _arguments->push_oop(h); }
|
|
790 };
|
|
791
|
|
792
|
|
793 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
|
|
794 protected:
|
|
795 va_list _ap;
|
|
796
|
|
797 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
|
|
798 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
|
|
799 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
|
|
800 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
|
|
801 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
|
|
802
|
|
803 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
|
|
804
|
|
805 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
|
|
806 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
|
|
807 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
|
|
808 inline void get_object() { jobject l = va_arg(_ap, jobject);
|
|
809 _arguments->push_oop(Handle((oop *)l, false)); }
|
|
810
|
|
811 inline void set_ap(va_list rap) {
|
|
812 #ifdef va_copy
|
|
813 va_copy(_ap, rap);
|
|
814 #elif defined (__va_copy)
|
|
815 __va_copy(_ap, rap);
|
|
816 #else
|
|
817 _ap = rap;
|
|
818 #endif
|
|
819 }
|
|
820
|
|
821 public:
|
|
822 JNI_ArgumentPusherVaArg(Thread *thread, symbolOop signature, va_list rap)
|
|
823 : JNI_ArgumentPusher(thread, signature) {
|
|
824 set_ap(rap);
|
|
825 }
|
|
826 JNI_ArgumentPusherVaArg(Thread *thread, jmethodID method_id, va_list rap)
|
|
827 : JNI_ArgumentPusher(thread, JNIHandles::resolve_jmethod_id(method_id)->signature()) {
|
|
828 set_ap(rap);
|
|
829 }
|
|
830
|
|
831 // Optimized path if we have the bitvector form of signature
|
|
832 void iterate( uint64_t fingerprint ) {
|
|
833 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
|
|
834 else {
|
|
835 _return_type = (BasicType)((fingerprint >> static_feature_size) &
|
|
836 result_feature_mask);
|
|
837
|
|
838 assert(fingerprint, "Fingerprint should not be 0");
|
|
839 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
|
|
840 while ( 1 ) {
|
|
841 switch ( fingerprint & parameter_feature_mask ) {
|
|
842 case bool_parm:
|
|
843 case char_parm:
|
|
844 case short_parm:
|
|
845 case byte_parm:
|
|
846 case int_parm:
|
|
847 get_int();
|
|
848 break;
|
|
849 case obj_parm:
|
|
850 get_object();
|
|
851 break;
|
|
852 case long_parm:
|
|
853 get_long();
|
|
854 break;
|
|
855 case float_parm:
|
|
856 get_float();
|
|
857 break;
|
|
858 case double_parm:
|
|
859 get_double();
|
|
860 break;
|
|
861 case done_parm:
|
|
862 return;
|
|
863 break;
|
|
864 default:
|
|
865 ShouldNotReachHere();
|
|
866 break;
|
|
867 }
|
|
868 fingerprint >>= parameter_feature_size;
|
|
869 }
|
|
870 }
|
|
871 }
|
|
872 };
|
|
873
|
|
874
|
|
875 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
|
|
876 protected:
|
|
877 const jvalue *_ap;
|
|
878
|
|
879 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
|
|
880 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
|
|
881 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
|
|
882 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
|
|
883 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
|
|
884
|
|
885 inline void get_long() { _arguments->push_long((_ap++)->j); }
|
|
886 inline void get_float() { _arguments->push_float((_ap++)->f); }
|
|
887 inline void get_double() { _arguments->push_double((_ap++)->d);}
|
|
888 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
|
|
889
|
|
890 inline void set_ap(const jvalue *rap) { _ap = rap; }
|
|
891
|
|
892 public:
|
|
893 JNI_ArgumentPusherArray(Thread *thread, symbolOop signature, const jvalue *rap)
|
|
894 : JNI_ArgumentPusher(thread, signature) {
|
|
895 set_ap(rap);
|
|
896 }
|
|
897 JNI_ArgumentPusherArray(Thread *thread, jmethodID method_id, const jvalue *rap)
|
|
898 : JNI_ArgumentPusher(thread, JNIHandles::resolve_jmethod_id(method_id)->signature()) {
|
|
899 set_ap(rap);
|
|
900 }
|
|
901
|
|
902 // Optimized path if we have the bitvector form of signature
|
|
903 void iterate( uint64_t fingerprint ) {
|
|
904 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
|
|
905 else {
|
|
906 _return_type = (BasicType)((fingerprint >> static_feature_size) &
|
|
907 result_feature_mask);
|
|
908 assert(fingerprint, "Fingerprint should not be 0");
|
|
909 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
|
|
910 while ( 1 ) {
|
|
911 switch ( fingerprint & parameter_feature_mask ) {
|
|
912 case bool_parm:
|
|
913 get_bool();
|
|
914 break;
|
|
915 case char_parm:
|
|
916 get_char();
|
|
917 break;
|
|
918 case short_parm:
|
|
919 get_short();
|
|
920 break;
|
|
921 case byte_parm:
|
|
922 get_byte();
|
|
923 break;
|
|
924 case int_parm:
|
|
925 get_int();
|
|
926 break;
|
|
927 case obj_parm:
|
|
928 get_object();
|
|
929 break;
|
|
930 case long_parm:
|
|
931 get_long();
|
|
932 break;
|
|
933 case float_parm:
|
|
934 get_float();
|
|
935 break;
|
|
936 case double_parm:
|
|
937 get_double();
|
|
938 break;
|
|
939 case done_parm:
|
|
940 return;
|
|
941 break;
|
|
942 default:
|
|
943 ShouldNotReachHere();
|
|
944 break;
|
|
945 }
|
|
946 fingerprint >>= parameter_feature_size;
|
|
947 }
|
|
948 }
|
|
949 }
|
|
950 };
|
|
951
|
|
952
|
|
953 enum JNICallType {
|
|
954 JNI_STATIC,
|
|
955 JNI_VIRTUAL,
|
|
956 JNI_NONVIRTUAL
|
|
957 };
|
|
958
|
|
959 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
|
|
960 assert(!method.is_null() , "method should not be null");
|
|
961
|
|
962 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
|
|
963 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
|
|
964 KlassHandle spec_klass (THREAD, method->method_holder());
|
|
965 symbolHandle name (THREAD, method->name());
|
|
966 symbolHandle signature (THREAD, method->signature());
|
|
967 CallInfo info;
|
|
968 LinkResolver::resolve_interface_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
|
|
969 return info.selected_method();
|
|
970 }
|
|
971
|
|
972 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
|
|
973 assert(!method.is_null() , "method should not be null");
|
|
974
|
|
975 KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
|
|
976 if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
|
|
977 KlassHandle spec_klass (THREAD, method->method_holder());
|
|
978 symbolHandle name (THREAD, method->name());
|
|
979 symbolHandle signature (THREAD, method->signature());
|
|
980 CallInfo info;
|
|
981 LinkResolver::resolve_virtual_call(info, recv, recv_klass, spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
|
|
982 return info.selected_method();
|
|
983 }
|
|
984
|
|
985
|
|
986
|
|
987 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
|
|
988 methodHandle method(THREAD, JNIHandles::resolve_jmethod_id(method_id));
|
|
989
|
|
990 // Create object to hold arguments for the JavaCall, and associate it with
|
|
991 // the jni parser
|
|
992 ResourceMark rm(THREAD);
|
|
993 int number_of_parameters = method->size_of_parameters();
|
|
994 JavaCallArguments java_args(number_of_parameters);
|
|
995 args->set_java_argument_object(&java_args);
|
|
996
|
|
997 assert(method->is_static(), "method should be static");
|
|
998
|
|
999 // Fill out JavaCallArguments object
|
|
1000 args->iterate( Fingerprinter(THREAD, method).fingerprint() );
|
|
1001 // Initialize result type
|
|
1002 result->set_type(args->get_ret_type());
|
|
1003
|
|
1004 // Invoke the method. Result is returned as oop.
|
|
1005 JavaCalls::call(result, method, &java_args, CHECK);
|
|
1006
|
|
1007 // Convert result
|
|
1008 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
|
|
1009 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
|
|
1010 }
|
|
1011 }
|
|
1012
|
|
1013
|
|
1014 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
|
|
1015 oop recv = JNIHandles::resolve(receiver);
|
|
1016 if (recv == NULL) {
|
|
1017 THROW(vmSymbols::java_lang_NullPointerException());
|
|
1018 }
|
|
1019 Handle h_recv(THREAD, recv);
|
|
1020
|
|
1021 int number_of_parameters;
|
|
1022 methodOop selected_method;
|
|
1023 {
|
|
1024 methodOop m = JNIHandles::resolve_jmethod_id(method_id);
|
|
1025 number_of_parameters = m->size_of_parameters();
|
|
1026 klassOop holder = m->method_holder();
|
|
1027 if (!(Klass::cast(holder))->is_interface()) {
|
|
1028 // non-interface call -- for that little speed boost, don't handlize
|
|
1029 debug_only(No_Safepoint_Verifier nosafepoint;)
|
|
1030 if (call_type == JNI_VIRTUAL) {
|
|
1031 // jni_GetMethodID makes sure class is linked and initialized
|
|
1032 // so m should have a valid vtable index.
|
|
1033 int vtbl_index = m->vtable_index();
|
|
1034 if (vtbl_index != methodOopDesc::nonvirtual_vtable_index) {
|
|
1035 klassOop k = h_recv->klass();
|
|
1036 // k might be an arrayKlassOop but all vtables start at
|
|
1037 // the same place. The cast is to avoid virtual call and assertion.
|
|
1038 instanceKlass *ik = (instanceKlass*)k->klass_part();
|
|
1039 selected_method = ik->method_at_vtable(vtbl_index);
|
|
1040 } else {
|
|
1041 // final method
|
|
1042 selected_method = m;
|
|
1043 }
|
|
1044 } else {
|
|
1045 // JNI_NONVIRTUAL call
|
|
1046 selected_method = m;
|
|
1047 }
|
|
1048 } else {
|
|
1049 // interface call
|
|
1050 KlassHandle h_holder(THREAD, holder);
|
|
1051
|
|
1052 int itbl_index = m->cached_itable_index();
|
|
1053 if (itbl_index == -1) {
|
|
1054 itbl_index = klassItable::compute_itable_index(m);
|
|
1055 m->set_cached_itable_index(itbl_index);
|
|
1056 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
|
|
1057 }
|
|
1058 klassOop k = h_recv->klass();
|
|
1059 selected_method = instanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
|
|
1060 }
|
|
1061 }
|
|
1062
|
|
1063 methodHandle method(THREAD, selected_method);
|
|
1064
|
|
1065 // Create object to hold arguments for the JavaCall, and associate it with
|
|
1066 // the jni parser
|
|
1067 ResourceMark rm(THREAD);
|
|
1068 JavaCallArguments java_args(number_of_parameters);
|
|
1069 args->set_java_argument_object(&java_args);
|
|
1070
|
|
1071 // handle arguments
|
|
1072 assert(!method->is_static(), "method should not be static");
|
|
1073 args->push_receiver(h_recv); // Push jobject handle
|
|
1074
|
|
1075 // Fill out JavaCallArguments object
|
|
1076 args->iterate( Fingerprinter(THREAD, method).fingerprint() );
|
|
1077 // Initialize result type
|
|
1078 result->set_type(args->get_ret_type());
|
|
1079
|
|
1080 // Invoke the method. Result is returned as oop.
|
|
1081 JavaCalls::call(result, method, &java_args, CHECK);
|
|
1082
|
|
1083 // Convert result
|
|
1084 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
|
|
1085 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
|
|
1086 }
|
|
1087 }
|
|
1088
|
|
1089
|
|
1090 static instanceOop alloc_object(jclass clazz, TRAPS) {
|
|
1091 KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1092 Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
|
|
1093 instanceKlass::cast(k())->initialize(CHECK_NULL);
|
|
1094 instanceOop ih = instanceKlass::cast(k())->allocate_instance(THREAD);
|
|
1095 return ih;
|
|
1096 }
|
|
1097
|
|
1098 DT_RETURN_MARK_DECL(AllocObject, jobject);
|
|
1099
|
|
1100 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
|
|
1101 JNIWrapper("AllocObject");
|
|
1102
|
|
1103 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
|
|
1104 jobject ret = NULL;
|
|
1105 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
|
|
1106
|
|
1107 instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1108 ret = JNIHandles::make_local(env, i);
|
|
1109 return ret;
|
|
1110 JNI_END
|
|
1111
|
|
1112 DT_RETURN_MARK_DECL(NewObjectA, jobject);
|
|
1113
|
|
1114 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
|
|
1115 JNIWrapper("NewObjectA");
|
|
1116 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
|
|
1117 jobject obj = NULL;
|
|
1118 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
|
|
1119
|
|
1120 instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1121 obj = JNIHandles::make_local(env, i);
|
|
1122 JavaValue jvalue(T_VOID);
|
|
1123 JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1124 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
|
|
1125 return obj;
|
|
1126 JNI_END
|
|
1127
|
|
1128 DT_RETURN_MARK_DECL(NewObjectV, jobject);
|
|
1129
|
|
1130 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
|
|
1131 JNIWrapper("NewObjectV");
|
|
1132 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
|
|
1133 jobject obj = NULL;
|
|
1134 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
|
|
1135
|
|
1136 instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1137 obj = JNIHandles::make_local(env, i);
|
|
1138 JavaValue jvalue(T_VOID);
|
|
1139 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1140 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
|
|
1141 return obj;
|
|
1142 JNI_END
|
|
1143
|
|
1144 DT_RETURN_MARK_DECL(NewObject, jobject);
|
|
1145
|
|
1146 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
|
|
1147 JNIWrapper("NewObject");
|
|
1148 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
|
|
1149 jobject obj = NULL;
|
|
1150 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
|
|
1151
|
|
1152 instanceOop i = alloc_object(clazz, CHECK_NULL);
|
|
1153 obj = JNIHandles::make_local(env, i);
|
|
1154 va_list args;
|
|
1155 va_start(args, methodID);
|
|
1156 JavaValue jvalue(T_VOID);
|
|
1157 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1158 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
|
|
1159 va_end(args);
|
|
1160 return obj;
|
|
1161 JNI_END
|
|
1162
|
|
1163
|
|
1164 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
|
|
1165 JNIWrapper("GetObjectClass");
|
|
1166 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
|
|
1167 klassOop k = JNIHandles::resolve_non_null(obj)->klass();
|
|
1168 jclass ret =
|
|
1169 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
|
|
1170 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
|
|
1171 return ret;
|
|
1172 JNI_END
|
|
1173
|
|
1174 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
|
|
1175 JNIWrapper("IsInstanceOf");
|
|
1176 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
|
|
1177 jboolean ret = JNI_TRUE;
|
|
1178 if (obj != NULL) {
|
|
1179 ret = JNI_FALSE;
|
|
1180 klassOop k = java_lang_Class::as_klassOop(
|
|
1181 JNIHandles::resolve_non_null(clazz));
|
|
1182 if (k != NULL) {
|
|
1183 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
|
|
1184 }
|
|
1185 }
|
|
1186 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
|
|
1187 return ret;
|
|
1188 JNI_END
|
|
1189
|
|
1190
|
|
1191 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
|
|
1192 const char *sig, bool is_static, TRAPS) {
|
|
1193 // %%%% This code should probably just call into a method in the LinkResolver
|
|
1194 //
|
|
1195 // The class should have been loaded (we have an instance of the class
|
|
1196 // passed in) so the method and signature should already be in the symbol
|
|
1197 // table. If they're not there, the method doesn't exist.
|
|
1198 symbolHandle signature =
|
|
1199 symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig)));
|
|
1200 symbolHandle name;
|
|
1201 if (name_str == NULL) {
|
|
1202 name = vmSymbolHandles::object_initializer_name();
|
|
1203 } else {
|
|
1204 name = symbolHandle(THREAD,
|
|
1205 SymbolTable::probe(name_str, (int)strlen(name_str)));
|
|
1206 }
|
|
1207 if (name.is_null() || signature.is_null()) {
|
|
1208 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
|
|
1209 }
|
|
1210
|
|
1211 // Throw a NoSuchMethodError exception if we have an instance of a
|
|
1212 // primitive java.lang.Class
|
|
1213 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
|
|
1214 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
|
|
1215 }
|
|
1216
|
|
1217 KlassHandle klass(THREAD,
|
|
1218 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1219
|
|
1220 // Make sure class is linked and initialized before handing id's out to
|
|
1221 // methodOops.
|
|
1222 Klass::cast(klass())->initialize(CHECK_NULL);
|
|
1223
|
|
1224 methodOop m;
|
|
1225 if (name() == vmSymbols::object_initializer_name() ||
|
|
1226 name() == vmSymbols::class_initializer_name()) {
|
|
1227 // Never search superclasses for constructors
|
|
1228 if (klass->oop_is_instance()) {
|
|
1229 m = instanceKlass::cast(klass())->find_method(name(), signature());
|
|
1230 } else {
|
|
1231 m = NULL;
|
|
1232 }
|
|
1233 } else {
|
|
1234 m = klass->lookup_method(name(), signature());
|
|
1235 // Look up interfaces
|
|
1236 if (m == NULL && klass->oop_is_instance()) {
|
|
1237 m = instanceKlass::cast(klass())->lookup_method_in_all_interfaces(name(),
|
|
1238 signature());
|
|
1239 }
|
|
1240 }
|
|
1241 if (m == NULL || (m->is_static() != is_static)) {
|
|
1242 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
|
|
1243 }
|
|
1244 return m->jmethod_id();
|
|
1245 }
|
|
1246
|
|
1247
|
|
1248 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
|
|
1249 const char *name, const char *sig))
|
|
1250 JNIWrapper("GetMethodID");
|
|
1251 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
|
|
1252 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
|
|
1253 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
|
|
1254 return ret;
|
|
1255 JNI_END
|
|
1256
|
|
1257
|
|
1258 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
|
|
1259 const char *name, const char *sig))
|
|
1260 JNIWrapper("GetStaticMethodID");
|
|
1261 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
|
|
1262 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
|
|
1263 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
|
|
1264 return ret;
|
|
1265 JNI_END
|
|
1266
|
|
1267
|
|
1268
|
|
1269 //
|
|
1270 // Calling Methods
|
|
1271 //
|
|
1272
|
|
1273
|
|
1274 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
|
|
1275 \
|
|
1276 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
|
|
1277 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
|
|
1278 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
|
|
1279 \
|
|
1280 JNI_ENTRY(ResultType, \
|
|
1281 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
|
|
1282 JNIWrapper("Call" XSTR(Result) "Method"); \
|
|
1283 \
|
|
1284 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID);\
|
|
1285 ResultType ret = 0;\
|
|
1286 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
|
|
1287 (const ResultType&)ret);\
|
|
1288 \
|
|
1289 va_list args; \
|
|
1290 va_start(args, methodID); \
|
|
1291 JavaValue jvalue(Tag); \
|
|
1292 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1293 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
|
|
1294 va_end(args); \
|
|
1295 ret = jvalue.get_##ResultType(); \
|
|
1296 return ret;\
|
|
1297 JNI_END \
|
|
1298 \
|
|
1299 \
|
|
1300 JNI_ENTRY(ResultType, \
|
|
1301 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
|
|
1302 JNIWrapper("Call" XSTR(Result) "MethodV"); \
|
|
1303 \
|
|
1304 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID);\
|
|
1305 ResultType ret = 0;\
|
|
1306 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
|
|
1307 (const ResultType&)ret);\
|
|
1308 \
|
|
1309 JavaValue jvalue(Tag); \
|
|
1310 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1311 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
|
|
1312 ret = jvalue.get_##ResultType(); \
|
|
1313 return ret;\
|
|
1314 JNI_END \
|
|
1315 \
|
|
1316 \
|
|
1317 JNI_ENTRY(ResultType, \
|
|
1318 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
|
|
1319 JNIWrapper("Call" XSTR(Result) "MethodA"); \
|
|
1320 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID);\
|
|
1321 ResultType ret = 0;\
|
|
1322 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
|
|
1323 (const ResultType&)ret);\
|
|
1324 \
|
|
1325 JavaValue jvalue(Tag); \
|
|
1326 JNI_ArgumentPusherArray ap(THREAD, methodID, args); \
|
|
1327 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
|
|
1328 ret = jvalue.get_##ResultType(); \
|
|
1329 return ret;\
|
|
1330 JNI_END
|
|
1331
|
|
1332 // the runtime type of subword integral basic types is integer
|
|
1333 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
|
|
1334 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
|
|
1335 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
|
|
1336 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
|
|
1337
|
|
1338 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
|
|
1339 DEFINE_CALLMETHOD(jint, Int, T_INT)
|
|
1340 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
|
|
1341 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
|
|
1342 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
|
|
1343
|
|
1344 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
|
|
1345 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
|
|
1346 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
|
|
1347
|
|
1348 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
|
|
1349 JNIWrapper("CallVoidMethod");
|
|
1350 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
|
|
1351 DT_VOID_RETURN_MARK(CallVoidMethod);
|
|
1352
|
|
1353 va_list args;
|
|
1354 va_start(args, methodID);
|
|
1355 JavaValue jvalue(T_VOID);
|
|
1356 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1357 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
|
|
1358 va_end(args);
|
|
1359 JNI_END
|
|
1360
|
|
1361
|
|
1362 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
|
|
1363 JNIWrapper("CallVoidMethodV");
|
|
1364 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
|
|
1365 DT_VOID_RETURN_MARK(CallVoidMethodV);
|
|
1366
|
|
1367 JavaValue jvalue(T_VOID);
|
|
1368 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1369 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
|
|
1370 JNI_END
|
|
1371
|
|
1372
|
|
1373 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
|
|
1374 JNIWrapper("CallVoidMethodA");
|
|
1375 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
|
|
1376 DT_VOID_RETURN_MARK(CallVoidMethodA);
|
|
1377
|
|
1378 JavaValue jvalue(T_VOID);
|
|
1379 JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1380 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
|
|
1381 JNI_END
|
|
1382
|
|
1383
|
|
1384 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
|
|
1385 \
|
|
1386 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
|
|
1387 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
|
|
1388 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
|
|
1389 \
|
|
1390 JNI_ENTRY(ResultType, \
|
|
1391 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
|
|
1392 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
|
|
1393 \
|
|
1394 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
|
|
1395 ResultType ret;\
|
|
1396 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
|
|
1397 (const ResultType&)ret);\
|
|
1398 \
|
|
1399 va_list args; \
|
|
1400 va_start(args, methodID); \
|
|
1401 JavaValue jvalue(Tag); \
|
|
1402 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1403 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
|
|
1404 va_end(args); \
|
|
1405 ret = jvalue.get_##ResultType(); \
|
|
1406 return ret;\
|
|
1407 JNI_END \
|
|
1408 \
|
|
1409 JNI_ENTRY(ResultType, \
|
|
1410 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
|
|
1411 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
|
|
1412 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
|
|
1413 ResultType ret;\
|
|
1414 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
|
|
1415 (const ResultType&)ret);\
|
|
1416 \
|
|
1417 JavaValue jvalue(Tag); \
|
|
1418 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1419 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
|
|
1420 ret = jvalue.get_##ResultType(); \
|
|
1421 return ret;\
|
|
1422 JNI_END \
|
|
1423 \
|
|
1424 JNI_ENTRY(ResultType, \
|
|
1425 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
|
|
1426 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
|
|
1427 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
|
|
1428 ResultType ret;\
|
|
1429 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
|
|
1430 (const ResultType&)ret);\
|
|
1431 \
|
|
1432 JavaValue jvalue(Tag); \
|
|
1433 JNI_ArgumentPusherArray ap(THREAD, methodID, args); \
|
|
1434 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
|
|
1435 ret = jvalue.get_##ResultType(); \
|
|
1436 return ret;\
|
|
1437 JNI_END
|
|
1438
|
|
1439 // the runtime type of subword integral basic types is integer
|
|
1440 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
|
|
1441 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
|
|
1442 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
|
|
1443 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
|
|
1444
|
|
1445 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
|
|
1446 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
|
|
1447 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
|
|
1448 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
|
|
1449 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
|
|
1450
|
|
1451
|
|
1452 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
|
|
1453 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
|
|
1454 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
|
|
1455
|
|
1456 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
|
|
1457 JNIWrapper("CallNonvirtualVoidMethod");
|
|
1458
|
|
1459 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
|
|
1460 env, obj, cls, methodID);
|
|
1461 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
|
|
1462
|
|
1463 va_list args;
|
|
1464 va_start(args, methodID);
|
|
1465 JavaValue jvalue(T_VOID);
|
|
1466 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1467 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
|
|
1468 va_end(args);
|
|
1469 JNI_END
|
|
1470
|
|
1471
|
|
1472 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
|
|
1473 JNIWrapper("CallNonvirtualVoidMethodV");
|
|
1474
|
|
1475 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
|
|
1476 env, obj, cls, methodID);
|
|
1477 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
|
|
1478
|
|
1479 JavaValue jvalue(T_VOID);
|
|
1480 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1481 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
|
|
1482 JNI_END
|
|
1483
|
|
1484
|
|
1485 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
|
|
1486 JNIWrapper("CallNonvirtualVoidMethodA");
|
|
1487 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
|
|
1488 env, obj, cls, methodID);
|
|
1489 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
|
|
1490 JavaValue jvalue(T_VOID);
|
|
1491 JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1492 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
|
|
1493 JNI_END
|
|
1494
|
|
1495
|
|
1496 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
|
|
1497 \
|
|
1498 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
|
|
1499 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
|
|
1500 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
|
|
1501 \
|
|
1502 JNI_ENTRY(ResultType, \
|
|
1503 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
|
|
1504 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
|
|
1505 \
|
|
1506 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
|
|
1507 ResultType ret = 0;\
|
|
1508 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
|
|
1509 (const ResultType&)ret);\
|
|
1510 \
|
|
1511 va_list args; \
|
|
1512 va_start(args, methodID); \
|
|
1513 JavaValue jvalue(Tag); \
|
|
1514 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1515 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
|
|
1516 va_end(args); \
|
|
1517 ret = jvalue.get_##ResultType(); \
|
|
1518 return ret;\
|
|
1519 JNI_END \
|
|
1520 \
|
|
1521 JNI_ENTRY(ResultType, \
|
|
1522 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
|
|
1523 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
|
|
1524 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
|
|
1525 ResultType ret = 0;\
|
|
1526 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
|
|
1527 (const ResultType&)ret);\
|
|
1528 \
|
|
1529 JavaValue jvalue(Tag); \
|
|
1530 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args); \
|
|
1531 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
|
|
1532 ret = jvalue.get_##ResultType(); \
|
|
1533 return ret;\
|
|
1534 JNI_END \
|
|
1535 \
|
|
1536 JNI_ENTRY(ResultType, \
|
|
1537 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
|
|
1538 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
|
|
1539 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
|
|
1540 ResultType ret = 0;\
|
|
1541 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
|
|
1542 (const ResultType&)ret);\
|
|
1543 \
|
|
1544 JavaValue jvalue(Tag); \
|
|
1545 JNI_ArgumentPusherArray ap(THREAD, methodID, args); \
|
|
1546 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
|
|
1547 ret = jvalue.get_##ResultType(); \
|
|
1548 return ret;\
|
|
1549 JNI_END
|
|
1550
|
|
1551 // the runtime type of subword integral basic types is integer
|
|
1552 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
|
|
1553 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
|
|
1554 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
|
|
1555 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
|
|
1556
|
|
1557 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
|
|
1558 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
|
|
1559 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
|
|
1560 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
|
|
1561 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
|
|
1562
|
|
1563
|
|
1564 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
|
|
1565 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
|
|
1566 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
|
|
1567
|
|
1568 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
|
|
1569 JNIWrapper("CallStaticVoidMethod");
|
|
1570 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
|
|
1571 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
|
|
1572
|
|
1573 va_list args;
|
|
1574 va_start(args, methodID);
|
|
1575 JavaValue jvalue(T_VOID);
|
|
1576 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1577 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
|
|
1578 va_end(args);
|
|
1579 JNI_END
|
|
1580
|
|
1581
|
|
1582 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
|
|
1583 JNIWrapper("CallStaticVoidMethodV");
|
|
1584 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
|
|
1585 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
|
|
1586
|
|
1587 JavaValue jvalue(T_VOID);
|
|
1588 JNI_ArgumentPusherVaArg ap(THREAD, methodID, args);
|
|
1589 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
|
|
1590 JNI_END
|
|
1591
|
|
1592
|
|
1593 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
|
|
1594 JNIWrapper("CallStaticVoidMethodA");
|
|
1595 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
|
|
1596 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
|
|
1597
|
|
1598 JavaValue jvalue(T_VOID);
|
|
1599 JNI_ArgumentPusherArray ap(THREAD, methodID, args);
|
|
1600 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
|
|
1601 JNI_END
|
|
1602
|
|
1603
|
|
1604 //
|
|
1605 // Accessing Fields
|
|
1606 //
|
|
1607
|
|
1608
|
|
1609 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
|
|
1610
|
|
1611 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
|
|
1612 const char *name, const char *sig))
|
|
1613 JNIWrapper("GetFieldID");
|
|
1614 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
|
|
1615 jfieldID ret = 0;
|
|
1616 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
|
|
1617
|
|
1618 // The class should have been loaded (we have an instance of the class
|
|
1619 // passed in) so the field and signature should already be in the symbol
|
|
1620 // table. If they're not there, the field doesn't exist.
|
|
1621 symbolHandle fieldname =
|
|
1622 symbolHandle(THREAD, SymbolTable::probe(name, (int)strlen(name)));
|
|
1623 symbolHandle signame =
|
|
1624 symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig)));
|
|
1625 if (fieldname.is_null() || signame.is_null()) {
|
|
1626 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1627 }
|
|
1628 KlassHandle k(THREAD,
|
|
1629 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1630 // Make sure class is initialized before handing id's out to fields
|
|
1631 Klass::cast(k())->initialize(CHECK_NULL);
|
|
1632
|
|
1633 fieldDescriptor fd;
|
|
1634 if (!Klass::cast(k())->oop_is_instance() ||
|
|
1635 !instanceKlass::cast(k())->find_field(fieldname(), signame(), false, &fd)) {
|
|
1636 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1637 }
|
|
1638
|
|
1639 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
|
|
1640 // It may also have hash bits for k, if VerifyJNIFields is turned on.
|
|
1641 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
|
|
1642 return ret;
|
|
1643 JNI_END
|
|
1644
|
|
1645
|
|
1646 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
|
|
1647 JNIWrapper("GetObjectField");
|
|
1648 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
|
|
1649 oop o = JNIHandles::resolve_non_null(obj);
|
|
1650 klassOop k = o->klass();
|
|
1651 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
|
|
1652 // Keep JVMTI addition small and only check enabled flag here.
|
|
1653 // jni_GetField_probe() assumes that is okay to create handles.
|
|
1654 if (JvmtiExport::should_post_field_access()) {
|
|
1655 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
|
|
1656 }
|
|
1657 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
|
|
1658 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
|
|
1659 return ret;
|
|
1660 JNI_END
|
|
1661
|
|
1662
|
|
1663 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
|
|
1664 \
|
|
1665 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
|
|
1666 \
|
|
1667 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
|
|
1668 JNIWrapper("Get" XSTR(Result) "Field"); \
|
|
1669 \
|
|
1670 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
|
|
1671 Return ret = 0;\
|
|
1672 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
|
|
1673 \
|
|
1674 oop o = JNIHandles::resolve_non_null(obj); \
|
|
1675 klassOop k = o->klass(); \
|
|
1676 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
|
|
1677 /* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1678 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
|
|
1679 /* and creates a ResetNoHandleMark. */ \
|
|
1680 if (JvmtiExport::should_post_field_access()) { \
|
|
1681 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
|
|
1682 } \
|
|
1683 ret = o->Fieldname##_field(offset); \
|
|
1684 return ret; \
|
|
1685 JNI_END
|
|
1686
|
|
1687 DEFINE_GETFIELD(jboolean, bool, Boolean)
|
|
1688 DEFINE_GETFIELD(jbyte, byte, Byte)
|
|
1689 DEFINE_GETFIELD(jchar, char, Char)
|
|
1690 DEFINE_GETFIELD(jshort, short, Short)
|
|
1691 DEFINE_GETFIELD(jint, int, Int)
|
|
1692 DEFINE_GETFIELD(jlong, long, Long)
|
|
1693 DEFINE_GETFIELD(jfloat, float, Float)
|
|
1694 DEFINE_GETFIELD(jdouble, double, Double)
|
|
1695
|
|
1696 address jni_GetBooleanField_addr() {
|
|
1697 return (address)jni_GetBooleanField;
|
|
1698 }
|
|
1699 address jni_GetByteField_addr() {
|
|
1700 return (address)jni_GetByteField;
|
|
1701 }
|
|
1702 address jni_GetCharField_addr() {
|
|
1703 return (address)jni_GetCharField;
|
|
1704 }
|
|
1705 address jni_GetShortField_addr() {
|
|
1706 return (address)jni_GetShortField;
|
|
1707 }
|
|
1708 address jni_GetIntField_addr() {
|
|
1709 return (address)jni_GetIntField;
|
|
1710 }
|
|
1711 address jni_GetLongField_addr() {
|
|
1712 return (address)jni_GetLongField;
|
|
1713 }
|
|
1714 address jni_GetFloatField_addr() {
|
|
1715 return (address)jni_GetFloatField;
|
|
1716 }
|
|
1717 address jni_GetDoubleField_addr() {
|
|
1718 return (address)jni_GetDoubleField;
|
|
1719 }
|
|
1720
|
|
1721 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
|
|
1722 JNIWrapper("SetObjectField");
|
|
1723 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
|
|
1724 oop o = JNIHandles::resolve_non_null(obj);
|
|
1725 klassOop k = o->klass();
|
|
1726 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
|
|
1727 // Keep JVMTI addition small and only check enabled flag here.
|
|
1728 // jni_SetField_probe_nh() assumes that is not okay to create handles
|
|
1729 // and creates a ResetNoHandleMark.
|
|
1730 if (JvmtiExport::should_post_field_modification()) {
|
|
1731 jvalue field_value;
|
|
1732 field_value.l = value;
|
|
1733 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
|
|
1734 }
|
|
1735 o->obj_field_put(offset, JNIHandles::resolve(value));
|
|
1736 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
|
|
1737 JNI_END
|
|
1738
|
|
1739 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
|
|
1740 \
|
|
1741 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
|
|
1742 JNIWrapper("Set" XSTR(Result) "Field"); \
|
|
1743 \
|
|
1744 HS_DTRACE_PROBE_CDECL_N(hotspot_jni, Set##Result##Field__entry, \
|
|
1745 ( JNIEnv*, jobject, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
|
|
1746 HS_DTRACE_PROBE_N(hotspot_jni, Set##Result##Field__entry, \
|
|
1747 ( env, obj, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
|
|
1748 \
|
|
1749 oop o = JNIHandles::resolve_non_null(obj); \
|
|
1750 klassOop k = o->klass(); \
|
|
1751 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
|
|
1752 /* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1753 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
|
|
1754 /* and creates a ResetNoHandleMark. */ \
|
|
1755 if (JvmtiExport::should_post_field_modification()) { \
|
|
1756 jvalue field_value; \
|
|
1757 field_value.unionType = value; \
|
|
1758 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
|
|
1759 } \
|
|
1760 o->Fieldname##_field_put(offset, value); \
|
|
1761 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
|
|
1762 JNI_END
|
|
1763
|
|
1764 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
|
|
1765 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
|
|
1766 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
|
|
1767 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
|
|
1768 DEFINE_SETFIELD(jint, int, Int, 'I', i)
|
|
1769 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
|
|
1770 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
|
|
1771 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
|
|
1772
|
|
1773 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
|
|
1774
|
|
1775 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
|
|
1776 JNIWrapper("ToReflectedField");
|
|
1777 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
|
|
1778 env, cls, fieldID, isStatic);
|
|
1779 jobject ret = NULL;
|
|
1780 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
|
|
1781
|
|
1782 fieldDescriptor fd;
|
|
1783 bool found = false;
|
|
1784 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
|
|
1785
|
|
1786 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
|
|
1787
|
|
1788 if (isStatic) {
|
|
1789 // Static field. The fieldID a JNIid specifying the field holder and the offset within the klassOop.
|
|
1790 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
|
|
1791 assert(id->is_static_field_id(), "invalid static field id");
|
|
1792 found = instanceKlass::cast(id->holder())->find_local_field_from_offset(id->offset(), true, &fd);
|
|
1793 } else {
|
|
1794 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
|
|
1795 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
|
|
1796 found = instanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
|
|
1797 }
|
|
1798 assert(found, "bad fieldID passed into jni_ToReflectedField");
|
|
1799 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
|
|
1800 ret = JNIHandles::make_local(env, reflected);
|
|
1801 return ret;
|
|
1802 JNI_END
|
|
1803
|
|
1804
|
|
1805 //
|
|
1806 // Accessing Static Fields
|
|
1807 //
|
|
1808 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
|
|
1809
|
|
1810 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
|
|
1811 const char *name, const char *sig))
|
|
1812 JNIWrapper("GetStaticFieldID");
|
|
1813 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
|
|
1814 jfieldID ret = NULL;
|
|
1815 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
|
|
1816
|
|
1817 // The class should have been loaded (we have an instance of the class
|
|
1818 // passed in) so the field and signature should already be in the symbol
|
|
1819 // table. If they're not there, the field doesn't exist.
|
|
1820 symbolHandle fieldname =
|
|
1821 symbolHandle(THREAD, SymbolTable::probe(name, (int)strlen(name)));
|
|
1822 symbolHandle signame =
|
|
1823 symbolHandle(THREAD, SymbolTable::probe(sig, (int)strlen(sig)));
|
|
1824 if (fieldname.is_null() || signame.is_null()) {
|
|
1825 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1826 }
|
|
1827 KlassHandle k(THREAD,
|
|
1828 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
1829 // Make sure class is initialized before handing id's out to static fields
|
|
1830 Klass::cast(k())->initialize(CHECK_NULL);
|
|
1831
|
|
1832 fieldDescriptor fd;
|
|
1833 if (!Klass::cast(k())->oop_is_instance() ||
|
|
1834 !instanceKlass::cast(k())->find_field(fieldname(), signame(), true, &fd)) {
|
|
1835 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
|
|
1836 }
|
|
1837
|
|
1838 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
|
|
1839 JNIid* id = instanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset());
|
|
1840 debug_only(id->set_is_static_field_id();)
|
|
1841
|
|
1842 debug_only(int first_offset = instanceKlass::cast(fd.field_holder())->offset_of_static_fields();)
|
|
1843 debug_only(int end_offset = first_offset + (instanceKlass::cast(fd.field_holder())->static_field_size() * wordSize);)
|
|
1844 assert(id->offset() >= first_offset && id->offset() < end_offset, "invalid static field offset");
|
|
1845
|
|
1846 ret = jfieldIDWorkaround::to_static_jfieldID(id);
|
|
1847 return ret;
|
|
1848 JNI_END
|
|
1849
|
|
1850
|
|
1851 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
|
|
1852 JNIWrapper("GetStaticObjectField");
|
|
1853 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
|
|
1854 #ifndef JNICHECK_KERNEL
|
|
1855 DEBUG_ONLY(klassOop param_k = jniCheck::validate_class(thread, clazz);)
|
|
1856 #endif // JNICHECK_KERNEL
|
|
1857 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
|
|
1858 assert(id->is_static_field_id(), "invalid static field id");
|
|
1859 // Keep JVMTI addition small and only check enabled flag here.
|
|
1860 // jni_GetField_probe() assumes that is okay to create handles.
|
|
1861 if (JvmtiExport::should_post_field_access()) {
|
|
1862 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
|
|
1863 }
|
|
1864 jobject ret = JNIHandles::make_local(id->holder()->obj_field(id->offset()));
|
|
1865 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
|
|
1866 return ret;
|
|
1867 JNI_END
|
|
1868
|
|
1869 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
|
|
1870 \
|
|
1871 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
|
|
1872 \
|
|
1873 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
|
|
1874 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
|
|
1875 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
|
|
1876 Return ret = 0;\
|
|
1877 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
|
|
1878 (const Return&)ret);\
|
|
1879 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
|
|
1880 assert(id->is_static_field_id(), "invalid static field id"); \
|
|
1881 /* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1882 /* jni_GetField_probe() assumes that is okay to create handles. */ \
|
|
1883 if (JvmtiExport::should_post_field_access()) { \
|
|
1884 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
|
|
1885 } \
|
|
1886 ret = id->holder()-> Fieldname##_field (id->offset()); \
|
|
1887 return ret;\
|
|
1888 JNI_END
|
|
1889
|
|
1890 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
|
|
1891 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
|
|
1892 DEFINE_GETSTATICFIELD(jchar, char, Char)
|
|
1893 DEFINE_GETSTATICFIELD(jshort, short, Short)
|
|
1894 DEFINE_GETSTATICFIELD(jint, int, Int)
|
|
1895 DEFINE_GETSTATICFIELD(jlong, long, Long)
|
|
1896 DEFINE_GETSTATICFIELD(jfloat, float, Float)
|
|
1897 DEFINE_GETSTATICFIELD(jdouble, double, Double)
|
|
1898
|
|
1899
|
|
1900 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
|
|
1901 JNIWrapper("SetStaticObjectField");
|
|
1902 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
|
|
1903 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
|
|
1904 assert(id->is_static_field_id(), "invalid static field id");
|
|
1905 // Keep JVMTI addition small and only check enabled flag here.
|
|
1906 // jni_SetField_probe() assumes that is okay to create handles.
|
|
1907 if (JvmtiExport::should_post_field_modification()) {
|
|
1908 jvalue field_value;
|
|
1909 field_value.l = value;
|
|
1910 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
|
|
1911 }
|
|
1912 id->holder()->obj_field_put(id->offset(), JNIHandles::resolve(value));
|
|
1913 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
|
|
1914 JNI_END
|
|
1915
|
|
1916
|
|
1917 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
|
|
1918 \
|
|
1919 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
|
|
1920 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
|
|
1921 HS_DTRACE_PROBE_CDECL_N(hotspot_jni, SetStatic##Result##Field__entry,\
|
|
1922 ( JNIEnv*, jclass, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
|
|
1923 HS_DTRACE_PROBE_N(hotspot_jni, SetStatic##Result##Field__entry, \
|
|
1924 ( env, clazz, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
|
|
1925 \
|
|
1926 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
|
|
1927 assert(id->is_static_field_id(), "invalid static field id"); \
|
|
1928 /* Keep JVMTI addition small and only check enabled flag here. */ \
|
|
1929 /* jni_SetField_probe() assumes that is okay to create handles. */ \
|
|
1930 if (JvmtiExport::should_post_field_modification()) { \
|
|
1931 jvalue field_value; \
|
|
1932 field_value.unionType = value; \
|
|
1933 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
|
|
1934 } \
|
|
1935 id->holder()-> Fieldname##_field_put (id->offset(), value); \
|
|
1936 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
|
|
1937 JNI_END
|
|
1938
|
|
1939 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
|
|
1940 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
|
|
1941 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
|
|
1942 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
|
|
1943 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
|
|
1944 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
|
|
1945 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
|
|
1946 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
|
|
1947
|
|
1948
|
|
1949 //
|
|
1950 // String Operations
|
|
1951 //
|
|
1952
|
|
1953 // Unicode Interface
|
|
1954
|
|
1955 DT_RETURN_MARK_DECL(NewString, jstring);
|
|
1956
|
|
1957 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
|
|
1958 JNIWrapper("NewString");
|
|
1959 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
|
|
1960 jstring ret = NULL;
|
|
1961 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
|
|
1962 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
|
|
1963 ret = (jstring) JNIHandles::make_local(env, string);
|
|
1964 return ret;
|
|
1965 JNI_END
|
|
1966
|
|
1967
|
|
1968 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
|
|
1969 JNIWrapper("GetStringLength");
|
|
1970 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
|
|
1971 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
|
|
1972 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
|
|
1973 return ret;
|
|
1974 JNI_END
|
|
1975
|
|
1976
|
|
1977 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
|
|
1978 JNIEnv *env, jstring string, jboolean *isCopy))
|
|
1979 JNIWrapper("GetStringChars");
|
|
1980 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
|
|
1981 //%note jni_5
|
|
1982 if (isCopy != NULL) {
|
|
1983 *isCopy = JNI_TRUE;
|
|
1984 }
|
|
1985 oop s = JNIHandles::resolve_non_null(string);
|
|
1986 int s_len = java_lang_String::length(s);
|
|
1987 typeArrayOop s_value = java_lang_String::value(s);
|
|
1988 int s_offset = java_lang_String::offset(s);
|
|
1989 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1); // add one for zero termination
|
|
1990 if (s_len > 0) {
|
|
1991 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
|
|
1992 }
|
|
1993 buf[s_len] = 0;
|
|
1994 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
|
|
1995 return buf;
|
|
1996 JNI_END
|
|
1997
|
|
1998
|
|
1999 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
|
|
2000 JNIWrapper("ReleaseStringChars");
|
|
2001 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
|
|
2002 //%note jni_6
|
|
2003 if (chars != NULL) {
|
|
2004 // Since String objects are supposed to be immutable, don't copy any
|
|
2005 // new data back. A bad user will have to go after the char array.
|
|
2006 FreeHeap((void*) chars);
|
|
2007 }
|
|
2008 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
|
|
2009 JNI_END
|
|
2010
|
|
2011
|
|
2012 // UTF Interface
|
|
2013
|
|
2014 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
|
|
2015
|
|
2016 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
|
|
2017 JNIWrapper("NewStringUTF");
|
|
2018 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
|
|
2019 jstring ret;
|
|
2020 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
|
|
2021
|
|
2022 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
|
|
2023 ret = (jstring) JNIHandles::make_local(env, result);
|
|
2024 return ret;
|
|
2025 JNI_END
|
|
2026
|
|
2027
|
|
2028 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
|
|
2029 JNIWrapper("GetStringUTFLength");
|
|
2030 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
|
|
2031 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
|
|
2032 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
|
|
2033 return ret;
|
|
2034 JNI_END
|
|
2035
|
|
2036
|
|
2037 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
|
|
2038 JNIWrapper("GetStringUTFChars");
|
|
2039 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
|
|
2040 ResourceMark rm;
|
|
2041 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(string));
|
|
2042 int length = (int)strlen(str);
|
|
2043 char* result = AllocateHeap(length+1, "GetStringUTFChars");
|
|
2044 strcpy(result, str);
|
|
2045 if (isCopy != NULL) *isCopy = JNI_TRUE;
|
|
2046 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
|
|
2047 return result;
|
|
2048 JNI_END
|
|
2049
|
|
2050
|
|
2051 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
|
|
2052 JNIWrapper("ReleaseStringUTFChars");
|
|
2053 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
|
|
2054 if (chars != NULL) {
|
|
2055 FreeHeap((char*) chars);
|
|
2056 }
|
|
2057 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
|
|
2058 JNI_END
|
|
2059
|
|
2060
|
|
2061 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
|
|
2062 JNIWrapper("GetArrayLength");
|
|
2063 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
|
|
2064 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
|
|
2065 assert(a->is_array(), "must be array");
|
|
2066 jsize ret = a->length();
|
|
2067 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
|
|
2068 return ret;
|
|
2069 JNI_END
|
|
2070
|
|
2071
|
|
2072 //
|
|
2073 // Object Array Operations
|
|
2074 //
|
|
2075
|
|
2076 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
|
|
2077
|
|
2078 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
|
|
2079 JNIWrapper("NewObjectArray");
|
|
2080 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
|
|
2081 jobjectArray ret = NULL;
|
|
2082 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
|
|
2083 KlassHandle ek(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(elementClass)));
|
|
2084 klassOop ako = Klass::cast(ek())->array_klass(CHECK_NULL);
|
|
2085 KlassHandle ak = KlassHandle(THREAD, ako);
|
|
2086 objArrayKlass::cast(ak())->initialize(CHECK_NULL);
|
|
2087 objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
|
|
2088 oop initial_value = JNIHandles::resolve(initialElement);
|
|
2089 if (initial_value != NULL) { // array already initialized with NULL
|
|
2090 for (int index = 0; index < length; index++) {
|
|
2091 result->obj_at_put(index, initial_value);
|
|
2092 }
|
|
2093 }
|
|
2094 ret = (jobjectArray) JNIHandles::make_local(env, result);
|
|
2095 return ret;
|
|
2096 JNI_END
|
|
2097
|
|
2098 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
|
|
2099
|
|
2100 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
|
|
2101 JNIWrapper("GetObjectArrayElement");
|
|
2102 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
|
|
2103 jobject ret = NULL;
|
|
2104 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
|
|
2105 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
|
|
2106 if (a->is_within_bounds(index)) {
|
|
2107 jobject ret = JNIHandles::make_local(env, a->obj_at(index));
|
|
2108 return ret;
|
|
2109 } else {
|
|
2110 char buf[jintAsStringSize];
|
|
2111 sprintf(buf, "%d", index);
|
|
2112 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
|
|
2113 }
|
|
2114 JNI_END
|
|
2115
|
|
2116 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
|
|
2117
|
|
2118 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
|
|
2119 JNIWrapper("SetObjectArrayElement");
|
|
2120 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
|
|
2121 DT_VOID_RETURN_MARK(SetObjectArrayElement);
|
|
2122
|
|
2123 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
|
|
2124 oop v = JNIHandles::resolve(value);
|
|
2125 if (a->is_within_bounds(index)) {
|
|
2126 if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) {
|
|
2127 a->obj_at_put(index, v);
|
|
2128 } else {
|
|
2129 THROW(vmSymbols::java_lang_ArrayStoreException());
|
|
2130 }
|
|
2131 } else {
|
|
2132 char buf[jintAsStringSize];
|
|
2133 sprintf(buf, "%d", index);
|
|
2134 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
|
|
2135 }
|
|
2136 JNI_END
|
|
2137
|
|
2138
|
|
2139 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
|
|
2140 \
|
|
2141 DT_RETURN_MARK_DECL_FOR(Result, New##Result##Array, Return);\
|
|
2142 \
|
|
2143 JNI_ENTRY(Return, \
|
|
2144 jni_New##Result##Array(JNIEnv *env, jsize len)) \
|
|
2145 JNIWrapper("New" XSTR(Result) "Array"); \
|
|
2146 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
|
|
2147 Return ret = NULL;\
|
|
2148 DT_RETURN_MARK_FOR(Result, New##Result##Array, Return, (const Return&)ret);\
|
|
2149 \
|
|
2150 oop obj= oopFactory::Allocator(len, CHECK_0); \
|
|
2151 ret = (Return) JNIHandles::make_local(env, obj); \
|
|
2152 return ret;\
|
|
2153 JNI_END
|
|
2154
|
|
2155 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
|
|
2156 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
|
|
2157 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
|
|
2158 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
|
|
2159 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
|
|
2160 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
|
|
2161 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
|
|
2162 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
|
|
2163
|
|
2164
|
|
2165 // Return an address which will fault if the caller writes to it.
|
|
2166
|
|
2167 static char* get_bad_address() {
|
|
2168 static char* bad_address = NULL;
|
|
2169 if (bad_address == NULL) {
|
|
2170 size_t size = os::vm_allocation_granularity();
|
|
2171 bad_address = os::reserve_memory(size);
|
|
2172 if (bad_address != NULL) {
|
|
2173 os::commit_memory(bad_address, size);
|
|
2174 os::protect_memory(bad_address, size);
|
|
2175 }
|
|
2176 }
|
|
2177 return bad_address;
|
|
2178 }
|
|
2179
|
|
2180
|
|
2181 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
|
|
2182 \
|
|
2183 JNI_QUICK_ENTRY(ElementType*, \
|
|
2184 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
|
|
2185 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
|
|
2186 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
|
|
2187 /* allocate an chunk of memory in c land */ \
|
|
2188 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2189 ElementType* result; \
|
|
2190 int len = a->length(); \
|
|
2191 if (len == 0) { \
|
|
2192 /* Empty array: legal but useless, can't return NULL. \
|
|
2193 * Return a pointer to something useless. \
|
|
2194 * Avoid asserts in typeArrayOop. */ \
|
|
2195 result = (ElementType*)get_bad_address(); \
|
|
2196 } else { \
|
|
2197 result = NEW_C_HEAP_ARRAY(ElementType, len); \
|
|
2198 /* copy the array to the c chunk */ \
|
|
2199 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
|
|
2200 } \
|
|
2201 if (isCopy) *isCopy = JNI_TRUE; \
|
|
2202 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
|
|
2203 return result; \
|
|
2204 JNI_END
|
|
2205
|
|
2206 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
|
|
2207 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
|
|
2208 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
|
|
2209 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
|
|
2210 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
|
|
2211 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
|
|
2212 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
|
|
2213 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
|
|
2214
|
|
2215
|
|
2216 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
|
|
2217 \
|
|
2218 JNI_QUICK_ENTRY(void, \
|
|
2219 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
|
|
2220 ElementType *buf, jint mode)) \
|
|
2221 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
|
|
2222 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
|
|
2223 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2224 int len = a->length(); \
|
|
2225 if (len != 0) { /* Empty array: nothing to free or copy. */ \
|
|
2226 if ((mode == 0) || (mode == JNI_COMMIT)) { \
|
|
2227 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
|
|
2228 } \
|
|
2229 if ((mode == 0) || (mode == JNI_ABORT)) { \
|
|
2230 FreeHeap(buf); \
|
|
2231 } \
|
|
2232 } \
|
|
2233 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
|
|
2234 JNI_END
|
|
2235
|
|
2236 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
|
|
2237 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
|
|
2238 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
|
|
2239 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
|
|
2240 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
|
|
2241 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
|
|
2242 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
|
|
2243 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
|
|
2244
|
|
2245 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
|
|
2246 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
|
|
2247 \
|
|
2248 JNI_ENTRY(void, \
|
|
2249 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
|
|
2250 jsize len, ElementType *buf)) \
|
|
2251 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
|
|
2252 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
|
|
2253 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
|
|
2254 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2255 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
|
|
2256 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
|
|
2257 } else { \
|
|
2258 if (len > 0) { \
|
|
2259 int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
|
|
2260 memcpy((u_char*) buf, \
|
|
2261 (u_char*) src->Tag##_at_addr(start), \
|
|
2262 len << sc); \
|
|
2263 } \
|
|
2264 } \
|
|
2265 JNI_END
|
|
2266
|
|
2267 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
|
|
2268 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
|
|
2269 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
|
|
2270 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
|
|
2271 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
|
|
2272 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
|
|
2273 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
|
|
2274 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
|
|
2275
|
|
2276 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
|
|
2277 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
|
|
2278 \
|
|
2279 JNI_ENTRY(void, \
|
|
2280 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
|
|
2281 jsize len, const ElementType *buf)) \
|
|
2282 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
|
|
2283 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
|
|
2284 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
|
|
2285 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
|
|
2286 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
|
|
2287 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
|
|
2288 } else { \
|
|
2289 if (len > 0) { \
|
|
2290 int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
|
|
2291 memcpy((u_char*) dst->Tag##_at_addr(start), \
|
|
2292 (u_char*) buf, \
|
|
2293 len << sc); \
|
|
2294 } \
|
|
2295 } \
|
|
2296 JNI_END
|
|
2297
|
|
2298 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
|
|
2299 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
|
|
2300 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
|
|
2301 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
|
|
2302 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
|
|
2303 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
|
|
2304 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
|
|
2305 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
|
|
2306
|
|
2307
|
|
2308 //
|
|
2309 // Interception of natives
|
|
2310 //
|
|
2311
|
|
2312 // The RegisterNatives call being attempted tried to register with a method that
|
|
2313 // is not native. Ask JVM TI what prefixes have been specified. Then check
|
|
2314 // to see if the native method is now wrapped with the prefixes. See the
|
|
2315 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
|
|
2316 static methodOop find_prefixed_native(KlassHandle k,
|
|
2317 symbolHandle name, symbolHandle signature, TRAPS) {
|
|
2318 ResourceMark rm(THREAD);
|
|
2319 methodOop method;
|
|
2320 int name_len = name->utf8_length();
|
|
2321 char* name_str = name->as_utf8();
|
|
2322 int prefix_count;
|
|
2323 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
|
|
2324 for (int i = 0; i < prefix_count; i++) {
|
|
2325 char* prefix = prefixes[i];
|
|
2326 int prefix_len = (int)strlen(prefix);
|
|
2327
|
|
2328 // try adding this prefix to the method name and see if it matches another method name
|
|
2329 int trial_len = name_len + prefix_len;
|
|
2330 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
|
|
2331 strcpy(trial_name_str, prefix);
|
|
2332 strcat(trial_name_str, name_str);
|
|
2333 symbolHandle trial_name(THREAD, SymbolTable::probe(trial_name_str, trial_len));
|
|
2334 if (trial_name.is_null()) {
|
|
2335 continue; // no such symbol, so this prefix wasn't used, try the next prefix
|
|
2336 }
|
|
2337 method = Klass::cast(k())->lookup_method(trial_name(), signature());
|
|
2338 if (method == NULL) {
|
|
2339 continue; // signature doesn't match, try the next prefix
|
|
2340 }
|
|
2341 if (method->is_native()) {
|
|
2342 method->set_is_prefixed_native();
|
|
2343 return method; // wahoo, we found a prefixed version of the method, return it
|
|
2344 }
|
|
2345 // found as non-native, so prefix is good, add it, probably just need more prefixes
|
|
2346 name_len = trial_len;
|
|
2347 name_str = trial_name_str;
|
|
2348 }
|
|
2349 return NULL; // not found
|
|
2350 }
|
|
2351
|
|
2352 static bool register_native(KlassHandle k, symbolHandle name, symbolHandle signature, address entry, TRAPS) {
|
|
2353 methodOop method = Klass::cast(k())->lookup_method(name(), signature());
|
|
2354 if (method == NULL) {
|
|
2355 ResourceMark rm;
|
|
2356 stringStream st;
|
|
2357 st.print("Method %s name or signature does not match",
|
|
2358 methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name(), signature()));
|
|
2359 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
|
|
2360 }
|
|
2361 if (!method->is_native()) {
|
|
2362 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
|
|
2363 method = find_prefixed_native(k, name, signature, THREAD);
|
|
2364 if (method == NULL) {
|
|
2365 ResourceMark rm;
|
|
2366 stringStream st;
|
|
2367 st.print("Method %s is not declared as native",
|
|
2368 methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name(), signature()));
|
|
2369 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
|
|
2370 }
|
|
2371 }
|
|
2372
|
|
2373 if (entry != NULL) {
|
|
2374 method->set_native_function(entry,
|
|
2375 methodOopDesc::native_bind_event_is_interesting);
|
|
2376 } else {
|
|
2377 method->clear_native_function();
|
|
2378 }
|
|
2379 if (PrintJNIResolving) {
|
|
2380 ResourceMark rm(THREAD);
|
|
2381 tty->print_cr("[Registering JNI native method %s.%s]",
|
|
2382 Klass::cast(method->method_holder())->external_name(),
|
|
2383 method->name()->as_C_string());
|
|
2384 }
|
|
2385 return true;
|
|
2386 }
|
|
2387
|
|
2388 DT_RETURN_MARK_DECL(RegisterNatives, jint);
|
|
2389
|
|
2390 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
|
|
2391 const JNINativeMethod *methods,
|
|
2392 jint nMethods))
|
|
2393 JNIWrapper("RegisterNatives");
|
|
2394 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
|
|
2395 jint ret = 0;
|
|
2396 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
|
|
2397
|
|
2398 KlassHandle h_k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
|
|
2399
|
|
2400 for (int index = 0; index < nMethods; index++) {
|
|
2401 const char* meth_name = methods[index].name;
|
|
2402 const char* meth_sig = methods[index].signature;
|
|
2403 int meth_name_len = (int)strlen(meth_name);
|
|
2404
|
|
2405 // The class should have been loaded (we have an instance of the class
|
|
2406 // passed in) so the method and signature should already be in the symbol
|
|
2407 // table. If they're not there, the method doesn't exist.
|
|
2408 symbolHandle name(THREAD, SymbolTable::probe(meth_name, meth_name_len));
|
|
2409 symbolHandle signature(THREAD, SymbolTable::probe(meth_sig, (int)strlen(meth_sig)));
|
|
2410
|
|
2411 if (name.is_null() || signature.is_null()) {
|
|
2412 ResourceMark rm;
|
|
2413 stringStream st;
|
|
2414 st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
|
|
2415 // Must return negative value on failure
|
|
2416 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
|
|
2417 }
|
|
2418
|
|
2419 bool res = register_native(h_k, name, signature,
|
|
2420 (address) methods[index].fnPtr, THREAD);
|
|
2421 if (!res) {
|
|
2422 ret = -1;
|
|
2423 break;
|
|
2424 }
|
|
2425 }
|
|
2426 return ret;
|
|
2427 JNI_END
|
|
2428
|
|
2429
|
|
2430 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
|
|
2431 JNIWrapper("UnregisterNatives");
|
|
2432 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
|
|
2433 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz));
|
|
2434 //%note jni_2
|
|
2435 if (Klass::cast(k)->oop_is_instance()) {
|
|
2436 for (int index = 0; index < instanceKlass::cast(k)->methods()->length(); index++) {
|
|
2437 methodOop m = methodOop(instanceKlass::cast(k)->methods()->obj_at(index));
|
|
2438 if (m->is_native()) {
|
|
2439 m->clear_native_function();
|
|
2440 m->set_signature_handler(NULL);
|
|
2441 }
|
|
2442 }
|
|
2443 }
|
|
2444 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
|
|
2445 return 0;
|
|
2446 JNI_END
|
|
2447
|
|
2448 //
|
|
2449 // Monitor functions
|
|
2450 //
|
|
2451
|
|
2452 DT_RETURN_MARK_DECL(MonitorEnter, jint);
|
|
2453
|
|
2454 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
|
|
2455 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
|
|
2456 jint ret = JNI_ERR;
|
|
2457 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
|
|
2458
|
|
2459 // If the object is null, we can't do anything with it
|
|
2460 if (jobj == NULL) {
|
|
2461 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
|
|
2462 }
|
|
2463
|
|
2464 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
|
|
2465 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
|
|
2466 ret = JNI_OK;
|
|
2467 return ret;
|
|
2468 JNI_END
|
|
2469
|
|
2470 DT_RETURN_MARK_DECL(MonitorExit, jint);
|
|
2471
|
|
2472 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
|
|
2473 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
|
|
2474 jint ret = JNI_ERR;
|
|
2475 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
|
|
2476
|
|
2477 // Don't do anything with a null object
|
|
2478 if (jobj == NULL) {
|
|
2479 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
|
|
2480 }
|
|
2481
|
|
2482 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
|
|
2483 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
|
|
2484
|
|
2485 ret = JNI_OK;
|
|
2486 return ret;
|
|
2487 JNI_END
|
|
2488
|
|
2489 //
|
|
2490 // Extensions
|
|
2491 //
|
|
2492
|
|
2493 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
|
|
2494
|
|
2495 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
|
|
2496 JNIWrapper("GetStringRegion");
|
|
2497 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
|
|
2498 DT_VOID_RETURN_MARK(GetStringRegion);
|
|
2499 oop s = JNIHandles::resolve_non_null(string);
|
|
2500 int s_len = java_lang_String::length(s);
|
|
2501 if (start < 0 || len < 0 || start + len > s_len) {
|
|
2502 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
|
|
2503 } else {
|
|
2504 if (len > 0) {
|
|
2505 int s_offset = java_lang_String::offset(s);
|
|
2506 typeArrayOop s_value = java_lang_String::value(s);
|
|
2507 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
|
|
2508 }
|
|
2509 }
|
|
2510 JNI_END
|
|
2511
|
|
2512 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
|
|
2513
|
|
2514 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
|
|
2515 JNIWrapper("GetStringUTFRegion");
|
|
2516 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
|
|
2517 DT_VOID_RETURN_MARK(GetStringUTFRegion);
|
|
2518 oop s = JNIHandles::resolve_non_null(string);
|
|
2519 int s_len = java_lang_String::length(s);
|
|
2520 if (start < 0 || len < 0 || start + len > s_len) {
|
|
2521 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
|
|
2522 } else {
|
|
2523 //%note jni_7
|
|
2524 if (len > 0) {
|
|
2525 ResourceMark rm(THREAD);
|
|
2526 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
|
|
2527 int utf_len = (int)strlen(utf_region);
|
|
2528 memcpy(buf, utf_region, utf_len);
|
|
2529 buf[utf_len] = 0;
|
|
2530 } else {
|
|
2531 // JDK null-terminates the buffer even in len is zero
|
|
2532 if (buf != NULL) {
|
|
2533 buf[0] = 0;
|
|
2534 }
|
|
2535 }
|
|
2536 }
|
|
2537 JNI_END
|
|
2538
|
|
2539
|
|
2540 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
|
|
2541 JNIWrapper("GetPrimitiveArrayCritical");
|
|
2542 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
|
|
2543 GC_locker::lock_critical(thread);
|
|
2544 if (isCopy != NULL) {
|
|
2545 *isCopy = JNI_FALSE;
|
|
2546 }
|
|
2547 oop a = JNIHandles::resolve_non_null(array);
|
|
2548 assert(a->is_array(), "just checking");
|
|
2549 BasicType type;
|
|
2550 if (a->is_objArray()) {
|
|
2551 type = T_OBJECT;
|
|
2552 } else {
|
|
2553 type = typeArrayKlass::cast(a->klass())->element_type();
|
|
2554 }
|
|
2555 void* ret = arrayOop(a)->base(type);
|
|
2556 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
|
|
2557 return ret;
|
|
2558 JNI_END
|
|
2559
|
|
2560
|
|
2561 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
|
|
2562 JNIWrapper("ReleasePrimitiveArrayCritical");
|
|
2563 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
|
|
2564 // The array, carray and mode arguments are ignored
|
|
2565 GC_locker::unlock_critical(thread);
|
|
2566 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
|
|
2567 JNI_END
|
|
2568
|
|
2569
|
|
2570 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
|
|
2571 JNIWrapper("GetStringCritical");
|
|
2572 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
|
|
2573 GC_locker::lock_critical(thread);
|
|
2574 if (isCopy != NULL) {
|
|
2575 *isCopy = JNI_FALSE;
|
|
2576 }
|
|
2577 oop s = JNIHandles::resolve_non_null(string);
|
|
2578 int s_len = java_lang_String::length(s);
|
|
2579 typeArrayOop s_value = java_lang_String::value(s);
|
|
2580 int s_offset = java_lang_String::offset(s);
|
|
2581 const jchar* ret;
|
|
2582 if (s_len > 0) {
|
|
2583 ret = s_value->char_at_addr(s_offset);
|
|
2584 } else {
|
|
2585 ret = (jchar*) s_value->base(T_CHAR);
|
|
2586 }
|
|
2587 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
|
|
2588 return ret;
|
|
2589 JNI_END
|
|
2590
|
|
2591
|
|
2592 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
|
|
2593 JNIWrapper("ReleaseStringCritical");
|
|
2594 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
|
|
2595 // The str and chars arguments are ignored
|
|
2596 GC_locker::unlock_critical(thread);
|
|
2597 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
|
|
2598 JNI_END
|
|
2599
|
|
2600
|
|
2601 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
|
|
2602 JNIWrapper("jni_NewWeakGlobalRef");
|
|
2603 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
|
|
2604 Handle ref_handle(thread, JNIHandles::resolve(ref));
|
|
2605 jweak ret = JNIHandles::make_weak_global(ref_handle);
|
|
2606 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
|
|
2607 return ret;
|
|
2608 JNI_END
|
|
2609
|
|
2610 // Must be JNI_ENTRY (with HandleMark)
|
|
2611 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
|
|
2612 JNIWrapper("jni_DeleteWeakGlobalRef");
|
|
2613 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
|
|
2614 JNIHandles::destroy_weak_global(ref);
|
|
2615 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
|
|
2616 JNI_END
|
|
2617
|
|
2618
|
|
2619 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
|
|
2620 JNIWrapper("jni_ExceptionCheck");
|
|
2621 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
|
|
2622 jni_check_async_exceptions(thread);
|
|
2623 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
|
|
2624 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
|
|
2625 return ret;
|
|
2626 JNI_END
|
|
2627
|
|
2628
|
|
2629 // Initialization state for three routines below relating to
|
|
2630 // java.nio.DirectBuffers
|
|
2631 static jint directBufferSupportInitializeStarted = 0;
|
|
2632 static volatile jint directBufferSupportInitializeEnded = 0;
|
|
2633 static volatile jint directBufferSupportInitializeFailed = 0;
|
|
2634 static jclass bufferClass = NULL;
|
|
2635 static jclass directBufferClass = NULL;
|
|
2636 static jclass directByteBufferClass = NULL;
|
|
2637 static jmethodID directByteBufferConstructor = NULL;
|
|
2638 static jfieldID directBufferAddressField = NULL;
|
|
2639 static jfieldID bufferCapacityField = NULL;
|
|
2640
|
|
2641 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
|
|
2642 Handle loader; // null (bootstrap) loader
|
|
2643 Handle protection_domain; // null protection domain
|
|
2644
|
|
2645 symbolHandle sym = oopFactory::new_symbol_handle(name, CHECK_NULL);
|
|
2646 return find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
|
|
2647 }
|
|
2648
|
|
2649 // These lookups are done with the NULL (bootstrap) ClassLoader to
|
|
2650 // circumvent any security checks that would be done by jni_FindClass.
|
|
2651 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
|
|
2652 {
|
|
2653 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
|
|
2654 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
|
|
2655 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
|
|
2656 return true;
|
|
2657 }
|
|
2658 JNI_END
|
|
2659
|
|
2660
|
|
2661 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
|
|
2662 if (directBufferSupportInitializeFailed) {
|
|
2663 return false;
|
|
2664 }
|
|
2665
|
|
2666 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
|
|
2667 if (!lookupDirectBufferClasses(env)) {
|
|
2668 directBufferSupportInitializeFailed = 1;
|
|
2669 return false;
|
|
2670 }
|
|
2671
|
|
2672 // Make global references for these
|
|
2673 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
|
|
2674 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
|
|
2675 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
|
|
2676
|
|
2677 // Get needed field and method IDs
|
|
2678 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
|
|
2679 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
|
|
2680 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
|
|
2681
|
|
2682 if ((directByteBufferConstructor == NULL) ||
|
|
2683 (directBufferAddressField == NULL) ||
|
|
2684 (bufferCapacityField == NULL)) {
|
|
2685 directBufferSupportInitializeFailed = 1;
|
|
2686 return false;
|
|
2687 }
|
|
2688
|
|
2689 directBufferSupportInitializeEnded = 1;
|
|
2690 } else {
|
|
2691 ThreadInVMfromNative tivn(thread); // set state as yield_all can call os:sleep
|
|
2692 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
|
|
2693 os::yield_all();
|
|
2694 }
|
|
2695 }
|
|
2696
|
|
2697 return !directBufferSupportInitializeFailed;
|
|
2698 }
|
|
2699
|
|
2700 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
|
|
2701 {
|
|
2702 // thread_from_jni_environment() will block if VM is gone.
|
|
2703 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
|
|
2704
|
|
2705 JNIWrapper("jni_NewDirectByteBuffer");
|
|
2706 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
|
|
2707
|
|
2708 if (!directBufferSupportInitializeEnded) {
|
|
2709 if (!initializeDirectBufferSupport(env, thread)) {
|
|
2710 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
|
|
2711 return NULL;
|
|
2712 }
|
|
2713 }
|
|
2714
|
|
2715 // Being paranoid about accidental sign extension on address
|
|
2716 jlong addr = (jlong) ((uintptr_t) address);
|
|
2717 // NOTE that package-private DirectByteBuffer constructor currently
|
|
2718 // takes int capacity
|
|
2719 jint cap = (jint) capacity;
|
|
2720 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
|
|
2721 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
|
|
2722 return ret;
|
|
2723 }
|
|
2724
|
|
2725 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
|
|
2726
|
|
2727 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
|
|
2728 {
|
|
2729 // thread_from_jni_environment() will block if VM is gone.
|
|
2730 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
|
|
2731
|
|
2732 JNIWrapper("jni_GetDirectBufferAddress");
|
|
2733 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
|
|
2734 void* ret = NULL;
|
|
2735 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
|
|
2736
|
|
2737 if (!directBufferSupportInitializeEnded) {
|
|
2738 if (!initializeDirectBufferSupport(env, thread)) {
|
|
2739 return 0;
|
|
2740 }
|
|
2741 }
|
|
2742
|
|
2743 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
|
|
2744 return 0;
|
|
2745 }
|
|
2746
|
|
2747 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
|
|
2748 return ret;
|
|
2749 }
|
|
2750
|
|
2751 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
|
|
2752
|
|
2753 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
|
|
2754 {
|
|
2755 // thread_from_jni_environment() will block if VM is gone.
|
|
2756 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
|
|
2757
|
|
2758 JNIWrapper("jni_GetDirectBufferCapacity");
|
|
2759 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
|
|
2760 jlong ret = -1;
|
|
2761 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
|
|
2762
|
|
2763 if (!directBufferSupportInitializeEnded) {
|
|
2764 if (!initializeDirectBufferSupport(env, thread)) {
|
|
2765 ret = 0;
|
|
2766 return ret;
|
|
2767 }
|
|
2768 }
|
|
2769
|
|
2770 if (buf == NULL) {
|
|
2771 return -1;
|
|
2772 }
|
|
2773
|
|
2774 if (!env->IsInstanceOf(buf, directBufferClass)) {
|
|
2775 return -1;
|
|
2776 }
|
|
2777
|
|
2778 // NOTE that capacity is currently an int in the implementation
|
|
2779 ret = env->GetIntField(buf, bufferCapacityField);
|
|
2780 return ret;
|
|
2781 }
|
|
2782
|
|
2783
|
|
2784 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
|
|
2785 JNIWrapper("GetVersion");
|
|
2786 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
|
|
2787 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
|
|
2788 return CurrentVersion;
|
|
2789 JNI_END
|
|
2790
|
|
2791 extern struct JavaVM_ main_vm;
|
|
2792
|
|
2793 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
|
|
2794 JNIWrapper("jni_GetJavaVM");
|
|
2795 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
|
|
2796 *vm = (JavaVM *)(&main_vm);
|
|
2797 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
|
|
2798 return JNI_OK;
|
|
2799 JNI_END
|
|
2800
|
|
2801 // Structure containing all jni functions
|
|
2802 struct JNINativeInterface_ jni_NativeInterface = {
|
|
2803 NULL,
|
|
2804 NULL,
|
|
2805 NULL,
|
|
2806
|
|
2807 NULL,
|
|
2808
|
|
2809 jni_GetVersion,
|
|
2810
|
|
2811 jni_DefineClass,
|
|
2812 jni_FindClass,
|
|
2813
|
|
2814 jni_FromReflectedMethod,
|
|
2815 jni_FromReflectedField,
|
|
2816
|
|
2817 jni_ToReflectedMethod,
|
|
2818
|
|
2819 jni_GetSuperclass,
|
|
2820 jni_IsAssignableFrom,
|
|
2821
|
|
2822 jni_ToReflectedField,
|
|
2823
|
|
2824 jni_Throw,
|
|
2825 jni_ThrowNew,
|
|
2826 jni_ExceptionOccurred,
|
|
2827 jni_ExceptionDescribe,
|
|
2828 jni_ExceptionClear,
|
|
2829 jni_FatalError,
|
|
2830
|
|
2831 jni_PushLocalFrame,
|
|
2832 jni_PopLocalFrame,
|
|
2833
|
|
2834 jni_NewGlobalRef,
|
|
2835 jni_DeleteGlobalRef,
|
|
2836 jni_DeleteLocalRef,
|
|
2837 jni_IsSameObject,
|
|
2838
|
|
2839 jni_NewLocalRef,
|
|
2840 jni_EnsureLocalCapacity,
|
|
2841
|
|
2842 jni_AllocObject,
|
|
2843 jni_NewObject,
|
|
2844 jni_NewObjectV,
|
|
2845 jni_NewObjectA,
|
|
2846
|
|
2847 jni_GetObjectClass,
|
|
2848 jni_IsInstanceOf,
|
|
2849
|
|
2850 jni_GetMethodID,
|
|
2851
|
|
2852 jni_CallObjectMethod,
|
|
2853 jni_CallObjectMethodV,
|
|
2854 jni_CallObjectMethodA,
|
|
2855 jni_CallBooleanMethod,
|
|
2856 jni_CallBooleanMethodV,
|
|
2857 jni_CallBooleanMethodA,
|
|
2858 jni_CallByteMethod,
|
|
2859 jni_CallByteMethodV,
|
|
2860 jni_CallByteMethodA,
|
|
2861 jni_CallCharMethod,
|
|
2862 jni_CallCharMethodV,
|
|
2863 jni_CallCharMethodA,
|
|
2864 jni_CallShortMethod,
|
|
2865 jni_CallShortMethodV,
|
|
2866 jni_CallShortMethodA,
|
|
2867 jni_CallIntMethod,
|
|
2868 jni_CallIntMethodV,
|
|
2869 jni_CallIntMethodA,
|
|
2870 jni_CallLongMethod,
|
|
2871 jni_CallLongMethodV,
|
|
2872 jni_CallLongMethodA,
|
|
2873 jni_CallFloatMethod,
|
|
2874 jni_CallFloatMethodV,
|
|
2875 jni_CallFloatMethodA,
|
|
2876 jni_CallDoubleMethod,
|
|
2877 jni_CallDoubleMethodV,
|
|
2878 jni_CallDoubleMethodA,
|
|
2879 jni_CallVoidMethod,
|
|
2880 jni_CallVoidMethodV,
|
|
2881 jni_CallVoidMethodA,
|
|
2882
|
|
2883 jni_CallNonvirtualObjectMethod,
|
|
2884 jni_CallNonvirtualObjectMethodV,
|
|
2885 jni_CallNonvirtualObjectMethodA,
|
|
2886 jni_CallNonvirtualBooleanMethod,
|
|
2887 jni_CallNonvirtualBooleanMethodV,
|
|
2888 jni_CallNonvirtualBooleanMethodA,
|
|
2889 jni_CallNonvirtualByteMethod,
|
|
2890 jni_CallNonvirtualByteMethodV,
|
|
2891 jni_CallNonvirtualByteMethodA,
|
|
2892 jni_CallNonvirtualCharMethod,
|
|
2893 jni_CallNonvirtualCharMethodV,
|
|
2894 jni_CallNonvirtualCharMethodA,
|
|
2895 jni_CallNonvirtualShortMethod,
|
|
2896 jni_CallNonvirtualShortMethodV,
|
|
2897 jni_CallNonvirtualShortMethodA,
|
|
2898 jni_CallNonvirtualIntMethod,
|
|
2899 jni_CallNonvirtualIntMethodV,
|
|
2900 jni_CallNonvirtualIntMethodA,
|
|
2901 jni_CallNonvirtualLongMethod,
|
|
2902 jni_CallNonvirtualLongMethodV,
|
|
2903 jni_CallNonvirtualLongMethodA,
|
|
2904 jni_CallNonvirtualFloatMethod,
|
|
2905 jni_CallNonvirtualFloatMethodV,
|
|
2906 jni_CallNonvirtualFloatMethodA,
|
|
2907 jni_CallNonvirtualDoubleMethod,
|
|
2908 jni_CallNonvirtualDoubleMethodV,
|
|
2909 jni_CallNonvirtualDoubleMethodA,
|
|
2910 jni_CallNonvirtualVoidMethod,
|
|
2911 jni_CallNonvirtualVoidMethodV,
|
|
2912 jni_CallNonvirtualVoidMethodA,
|
|
2913
|
|
2914 jni_GetFieldID,
|
|
2915
|
|
2916 jni_GetObjectField,
|
|
2917 jni_GetBooleanField,
|
|
2918 jni_GetByteField,
|
|
2919 jni_GetCharField,
|
|
2920 jni_GetShortField,
|
|
2921 jni_GetIntField,
|
|
2922 jni_GetLongField,
|
|
2923 jni_GetFloatField,
|
|
2924 jni_GetDoubleField,
|
|
2925
|
|
2926 jni_SetObjectField,
|
|
2927 jni_SetBooleanField,
|
|
2928 jni_SetByteField,
|
|
2929 jni_SetCharField,
|
|
2930 jni_SetShortField,
|
|
2931 jni_SetIntField,
|
|
2932 jni_SetLongField,
|
|
2933 jni_SetFloatField,
|
|
2934 jni_SetDoubleField,
|
|
2935
|
|
2936 jni_GetStaticMethodID,
|
|
2937
|
|
2938 jni_CallStaticObjectMethod,
|
|
2939 jni_CallStaticObjectMethodV,
|
|
2940 jni_CallStaticObjectMethodA,
|
|
2941 jni_CallStaticBooleanMethod,
|
|
2942 jni_CallStaticBooleanMethodV,
|
|
2943 jni_CallStaticBooleanMethodA,
|
|
2944 jni_CallStaticByteMethod,
|
|
2945 jni_CallStaticByteMethodV,
|
|
2946 jni_CallStaticByteMethodA,
|
|
2947 jni_CallStaticCharMethod,
|
|
2948 jni_CallStaticCharMethodV,
|
|
2949 jni_CallStaticCharMethodA,
|
|
2950 jni_CallStaticShortMethod,
|
|
2951 jni_CallStaticShortMethodV,
|
|
2952 jni_CallStaticShortMethodA,
|
|
2953 jni_CallStaticIntMethod,
|
|
2954 jni_CallStaticIntMethodV,
|
|
2955 jni_CallStaticIntMethodA,
|
|
2956 jni_CallStaticLongMethod,
|
|
2957 jni_CallStaticLongMethodV,
|
|
2958 jni_CallStaticLongMethodA,
|
|
2959 jni_CallStaticFloatMethod,
|
|
2960 jni_CallStaticFloatMethodV,
|
|
2961 jni_CallStaticFloatMethodA,
|
|
2962 jni_CallStaticDoubleMethod,
|
|
2963 jni_CallStaticDoubleMethodV,
|
|
2964 jni_CallStaticDoubleMethodA,
|
|
2965 jni_CallStaticVoidMethod,
|
|
2966 jni_CallStaticVoidMethodV,
|
|
2967 jni_CallStaticVoidMethodA,
|
|
2968
|
|
2969 jni_GetStaticFieldID,
|
|
2970
|
|
2971 jni_GetStaticObjectField,
|
|
2972 jni_GetStaticBooleanField,
|
|
2973 jni_GetStaticByteField,
|
|
2974 jni_GetStaticCharField,
|
|
2975 jni_GetStaticShortField,
|
|
2976 jni_GetStaticIntField,
|
|
2977 jni_GetStaticLongField,
|
|
2978 jni_GetStaticFloatField,
|
|
2979 jni_GetStaticDoubleField,
|
|
2980
|
|
2981 jni_SetStaticObjectField,
|
|
2982 jni_SetStaticBooleanField,
|
|
2983 jni_SetStaticByteField,
|
|
2984 jni_SetStaticCharField,
|
|
2985 jni_SetStaticShortField,
|
|
2986 jni_SetStaticIntField,
|
|
2987 jni_SetStaticLongField,
|
|
2988 jni_SetStaticFloatField,
|
|
2989 jni_SetStaticDoubleField,
|
|
2990
|
|
2991 jni_NewString,
|
|
2992 jni_GetStringLength,
|
|
2993 jni_GetStringChars,
|
|
2994 jni_ReleaseStringChars,
|
|
2995
|
|
2996 jni_NewStringUTF,
|
|
2997 jni_GetStringUTFLength,
|
|
2998 jni_GetStringUTFChars,
|
|
2999 jni_ReleaseStringUTFChars,
|
|
3000
|
|
3001 jni_GetArrayLength,
|
|
3002
|
|
3003 jni_NewObjectArray,
|
|
3004 jni_GetObjectArrayElement,
|
|
3005 jni_SetObjectArrayElement,
|
|
3006
|
|
3007 jni_NewBooleanArray,
|
|
3008 jni_NewByteArray,
|
|
3009 jni_NewCharArray,
|
|
3010 jni_NewShortArray,
|
|
3011 jni_NewIntArray,
|
|
3012 jni_NewLongArray,
|
|
3013 jni_NewFloatArray,
|
|
3014 jni_NewDoubleArray,
|
|
3015
|
|
3016 jni_GetBooleanArrayElements,
|
|
3017 jni_GetByteArrayElements,
|
|
3018 jni_GetCharArrayElements,
|
|
3019 jni_GetShortArrayElements,
|
|
3020 jni_GetIntArrayElements,
|
|
3021 jni_GetLongArrayElements,
|
|
3022 jni_GetFloatArrayElements,
|
|
3023 jni_GetDoubleArrayElements,
|
|
3024
|
|
3025 jni_ReleaseBooleanArrayElements,
|
|
3026 jni_ReleaseByteArrayElements,
|
|
3027 jni_ReleaseCharArrayElements,
|
|
3028 jni_ReleaseShortArrayElements,
|
|
3029 jni_ReleaseIntArrayElements,
|
|
3030 jni_ReleaseLongArrayElements,
|
|
3031 jni_ReleaseFloatArrayElements,
|
|
3032 jni_ReleaseDoubleArrayElements,
|
|
3033
|
|
3034 jni_GetBooleanArrayRegion,
|
|
3035 jni_GetByteArrayRegion,
|
|
3036 jni_GetCharArrayRegion,
|
|
3037 jni_GetShortArrayRegion,
|
|
3038 jni_GetIntArrayRegion,
|
|
3039 jni_GetLongArrayRegion,
|
|
3040 jni_GetFloatArrayRegion,
|
|
3041 jni_GetDoubleArrayRegion,
|
|
3042
|
|
3043 jni_SetBooleanArrayRegion,
|
|
3044 jni_SetByteArrayRegion,
|
|
3045 jni_SetCharArrayRegion,
|
|
3046 jni_SetShortArrayRegion,
|
|
3047 jni_SetIntArrayRegion,
|
|
3048 jni_SetLongArrayRegion,
|
|
3049 jni_SetFloatArrayRegion,
|
|
3050 jni_SetDoubleArrayRegion,
|
|
3051
|
|
3052 jni_RegisterNatives,
|
|
3053 jni_UnregisterNatives,
|
|
3054
|
|
3055 jni_MonitorEnter,
|
|
3056 jni_MonitorExit,
|
|
3057
|
|
3058 jni_GetJavaVM,
|
|
3059
|
|
3060 jni_GetStringRegion,
|
|
3061 jni_GetStringUTFRegion,
|
|
3062
|
|
3063 jni_GetPrimitiveArrayCritical,
|
|
3064 jni_ReleasePrimitiveArrayCritical,
|
|
3065
|
|
3066 jni_GetStringCritical,
|
|
3067 jni_ReleaseStringCritical,
|
|
3068
|
|
3069 jni_NewWeakGlobalRef,
|
|
3070 jni_DeleteWeakGlobalRef,
|
|
3071
|
|
3072 jni_ExceptionCheck,
|
|
3073
|
|
3074 jni_NewDirectByteBuffer,
|
|
3075 jni_GetDirectBufferAddress,
|
|
3076 jni_GetDirectBufferCapacity,
|
|
3077
|
|
3078 // New 1_6 features
|
|
3079
|
|
3080 jni_GetObjectRefType
|
|
3081 };
|
|
3082
|
|
3083
|
|
3084 // For jvmti use to modify jni function table.
|
|
3085 // Java threads in native contiues to run until it is transitioned
|
|
3086 // to VM at safepoint. Before the transition or before it is blocked
|
|
3087 // for safepoint it may access jni function table. VM could crash if
|
|
3088 // any java thread access the jni function table in the middle of memcpy.
|
|
3089 // To avoid this each function pointers are copied automically.
|
|
3090 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
|
|
3091 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
|
|
3092 intptr_t *a = (intptr_t *) jni_functions();
|
|
3093 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
|
|
3094 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
|
|
3095 Atomic::store_ptr(*b++, a++);
|
|
3096 }
|
|
3097 }
|
|
3098
|
|
3099 void quicken_jni_functions() {
|
|
3100 // Replace Get<Primitive>Field with fast versions
|
|
3101 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
|
|
3102 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
|
|
3103 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
|
|
3104 // windows x86 currently needs SEH wrapper and the gain of the fast
|
|
3105 // versions currently isn't certain for server vm on uniprocessor.
|
|
3106 && os::is_MP()
|
|
3107 #endif
|
|
3108 ) {
|
|
3109 address func;
|
|
3110 func = JNI_FastGetField::generate_fast_get_boolean_field();
|
|
3111 if (func != (address)-1) {
|
|
3112 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
|
|
3113 }
|
|
3114 func = JNI_FastGetField::generate_fast_get_byte_field();
|
|
3115 if (func != (address)-1) {
|
|
3116 jni_NativeInterface.GetByteField = (GetByteField_t)func;
|
|
3117 }
|
|
3118 func = JNI_FastGetField::generate_fast_get_char_field();
|
|
3119 if (func != (address)-1) {
|
|
3120 jni_NativeInterface.GetCharField = (GetCharField_t)func;
|
|
3121 }
|
|
3122 func = JNI_FastGetField::generate_fast_get_short_field();
|
|
3123 if (func != (address)-1) {
|
|
3124 jni_NativeInterface.GetShortField = (GetShortField_t)func;
|
|
3125 }
|
|
3126 func = JNI_FastGetField::generate_fast_get_int_field();
|
|
3127 if (func != (address)-1) {
|
|
3128 jni_NativeInterface.GetIntField = (GetIntField_t)func;
|
|
3129 }
|
|
3130 func = JNI_FastGetField::generate_fast_get_long_field();
|
|
3131 if (func != (address)-1) {
|
|
3132 jni_NativeInterface.GetLongField = (GetLongField_t)func;
|
|
3133 }
|
|
3134 func = JNI_FastGetField::generate_fast_get_float_field();
|
|
3135 if (func != (address)-1) {
|
|
3136 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
|
|
3137 }
|
|
3138 func = JNI_FastGetField::generate_fast_get_double_field();
|
|
3139 if (func != (address)-1) {
|
|
3140 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
|
|
3141 }
|
|
3142 }
|
|
3143 }
|
|
3144
|
|
3145 // Returns the function structure
|
|
3146 struct JNINativeInterface_* jni_functions() {
|
|
3147 #ifndef JNICHECK_KERNEL
|
|
3148 if (CheckJNICalls) return jni_functions_check();
|
|
3149 #else // JNICHECK_KERNEL
|
|
3150 if (CheckJNICalls) warning("-Xcheck:jni is not supported in kernel vm.");
|
|
3151 #endif // JNICHECK_KERNEL
|
|
3152 return &jni_NativeInterface;
|
|
3153 }
|
|
3154
|
|
3155 // Returns the function structure
|
|
3156 struct JNINativeInterface_* jni_functions_nocheck() {
|
|
3157 return &jni_NativeInterface;
|
|
3158 }
|
|
3159
|
|
3160
|
|
3161 // Invocation API
|
|
3162
|
|
3163
|
|
3164 // Forward declaration
|
|
3165 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
|
|
3166
|
|
3167 // Global invocation API vars
|
|
3168 volatile jint vm_created = 0;
|
|
3169 // Indicate whether it is safe to recreate VM
|
|
3170 volatile jint safe_to_recreate_vm = 1;
|
|
3171 struct JavaVM_ main_vm = {&jni_InvokeInterface};
|
|
3172
|
|
3173
|
|
3174 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
|
|
3175 #define PROCSTACKSIZE 0 /* 0 means default size in HPI */
|
|
3176 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
|
|
3177
|
|
3178 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
|
|
3179 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
|
|
3180
|
|
3181 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
|
|
3182 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
|
|
3183 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
|
|
3184 jint ret = JNI_ERR;
|
|
3185 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
|
|
3186
|
|
3187 if (Threads::is_supported_jni_version(args->version)) {
|
|
3188 ret = JNI_OK;
|
|
3189 }
|
|
3190 // 1.1 style no longer supported in hotspot.
|
|
3191 // According the JNI spec, we should update args->version on return.
|
|
3192 // We also use the structure to communicate with launcher about default
|
|
3193 // stack size.
|
|
3194 if (args->version == JNI_VERSION_1_1) {
|
|
3195 args->version = JNI_VERSION_1_2;
|
|
3196 // javaStackSize is int in arguments structure
|
|
3197 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
|
|
3198 args->javaStackSize = (jint)(ThreadStackSize * K);
|
|
3199 }
|
|
3200 return ret;
|
|
3201 }
|
|
3202
|
|
3203 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
|
|
3204 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
|
|
3205
|
|
3206 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
|
|
3207 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
|
|
3208
|
|
3209 jint result = JNI_ERR;
|
|
3210 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
|
|
3211
|
|
3212 // At the moment it's only possible to have one Java VM,
|
|
3213 // since some of the runtime state is in global variables.
|
|
3214
|
|
3215 // We cannot use our mutex locks here, since they only work on
|
|
3216 // Threads. We do an atomic compare and exchange to ensure only
|
|
3217 // one thread can call this method at a time
|
|
3218
|
|
3219 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
|
|
3220 // the add/dec implementations are dependent on whether we are running
|
|
3221 // on a multiprocessor, and at this stage of initialization the os::is_MP
|
|
3222 // function used to determine this will always return false. Atomic::xchg
|
|
3223 // does not have this problem.
|
|
3224 if (Atomic::xchg(1, &vm_created) == 1) {
|
|
3225 return JNI_ERR; // already created, or create attempt in progress
|
|
3226 }
|
|
3227 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
|
|
3228 return JNI_ERR; // someone tried and failed and retry not allowed.
|
|
3229 }
|
|
3230
|
|
3231 assert(vm_created == 1, "vm_created is true during the creation");
|
|
3232
|
|
3233 /**
|
|
3234 * Certain errors during initialization are recoverable and do not
|
|
3235 * prevent this method from being called again at a later time
|
|
3236 * (perhaps with different arguments). However, at a certain
|
|
3237 * point during initialization if an error occurs we cannot allow
|
|
3238 * this function to be called again (or it will crash). In those
|
|
3239 * situations, the 'canTryAgain' flag is set to false, which atomically
|
|
3240 * sets safe_to_recreate_vm to 1, such that any new call to
|
|
3241 * JNI_CreateJavaVM will immediately fail using the above logic.
|
|
3242 */
|
|
3243 bool can_try_again = true;
|
|
3244
|
|
3245 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
|
|
3246 if (result == JNI_OK) {
|
|
3247 JavaThread *thread = JavaThread::current();
|
|
3248 /* thread is thread_in_vm here */
|
|
3249 *vm = (JavaVM *)(&main_vm);
|
|
3250 *(JNIEnv**)penv = thread->jni_environment();
|
|
3251
|
|
3252 // Tracks the time application was running before GC
|
|
3253 RuntimeService::record_application_start();
|
|
3254
|
|
3255 // Notify JVMTI
|
|
3256 if (JvmtiExport::should_post_thread_life()) {
|
|
3257 JvmtiExport::post_thread_start(thread);
|
|
3258 }
|
|
3259 // Check if we should compile all classes on bootclasspath
|
|
3260 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
|
|
3261 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
|
|
3262 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
|
|
3263 } else {
|
|
3264 if (can_try_again) {
|
|
3265 // reset safe_to_recreate_vm to 1 so that retrial would be possible
|
|
3266 safe_to_recreate_vm = 1;
|
|
3267 }
|
|
3268
|
|
3269 // Creation failed. We must reset vm_created
|
|
3270 *vm = 0;
|
|
3271 *(JNIEnv**)penv = 0;
|
|
3272 // reset vm_created last to avoid race condition. Use OrderAccess to
|
|
3273 // control both compiler and architectural-based reordering.
|
|
3274 OrderAccess::release_store(&vm_created, 0);
|
|
3275 }
|
|
3276
|
|
3277 return result;
|
|
3278 }
|
|
3279
|
|
3280 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
|
|
3281 JavaVM**, jsize, jsize*);
|
|
3282 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
|
|
3283
|
|
3284 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
|
|
3285 // See bug 4367188, the wrapper can sometimes cause VM crashes
|
|
3286 // JNIWrapper("GetCreatedJavaVMs");
|
|
3287 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
|
|
3288 vm_buf, bufLen, numVMs);
|
|
3289 if (vm_created) {
|
|
3290 if (numVMs != NULL) *numVMs = 1;
|
|
3291 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
|
|
3292 } else {
|
|
3293 if (numVMs != NULL) *numVMs = 0;
|
|
3294 }
|
|
3295 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
|
|
3296 return JNI_OK;
|
|
3297 }
|
|
3298
|
|
3299 extern "C" {
|
|
3300
|
|
3301 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
|
|
3302
|
|
3303 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
|
|
3304 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
|
|
3305 jint res = JNI_ERR;
|
|
3306 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
|
|
3307
|
|
3308 if (!vm_created) {
|
|
3309 res = JNI_ERR;
|
|
3310 return res;
|
|
3311 }
|
|
3312
|
|
3313 JNIWrapper("DestroyJavaVM");
|
|
3314 JNIEnv *env;
|
|
3315 JavaVMAttachArgs destroyargs;
|
|
3316 destroyargs.version = CurrentVersion;
|
|
3317 destroyargs.name = (char *)"DestroyJavaVM";
|
|
3318 destroyargs.group = NULL;
|
|
3319 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
|
|
3320 if (res != JNI_OK) {
|
|
3321 return res;
|
|
3322 }
|
|
3323
|
|
3324 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
|
|
3325 JavaThread* thread = JavaThread::current();
|
|
3326 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
|
|
3327 if (Threads::destroy_vm()) {
|
|
3328 // Should not change thread state, VM is gone
|
|
3329 vm_created = false;
|
|
3330 res = JNI_OK;
|
|
3331 return res;
|
|
3332 } else {
|
|
3333 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
|
|
3334 res = JNI_ERR;
|
|
3335 return res;
|
|
3336 }
|
|
3337 }
|
|
3338
|
|
3339
|
|
3340 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
|
|
3341 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
|
|
3342
|
|
3343 // Check below commented out from JDK1.2fcs as well
|
|
3344 /*
|
|
3345 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
|
|
3346 return JNI_EVERSION;
|
|
3347 }
|
|
3348 */
|
|
3349
|
|
3350 Thread* t = ThreadLocalStorage::get_thread_slow();
|
|
3351 if (t != NULL) {
|
|
3352 // If the thread has been attached this operation is a no-op
|
|
3353 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
|
|
3354 return JNI_OK;
|
|
3355 }
|
|
3356
|
|
3357 // Create a thread and mark it as attaching so it will be skipped by the
|
|
3358 // ThreadsListEnumerator - see CR 6404306
|
|
3359 JavaThread* thread = new JavaThread(true);
|
|
3360
|
|
3361 // Set correct safepoint info. The thread is going to call into Java when
|
|
3362 // initializing the Java level thread object. Hence, the correct state must
|
|
3363 // be set in order for the Safepoint code to deal with it correctly.
|
|
3364 thread->set_thread_state(_thread_in_vm);
|
|
3365 // Must do this before initialize_thread_local_storage
|
|
3366 thread->record_stack_base_and_size();
|
|
3367 thread->initialize_thread_local_storage();
|
|
3368
|
|
3369 if (!os::create_attached_thread(thread)) {
|
|
3370 delete thread;
|
|
3371 return JNI_ERR;
|
|
3372 }
|
|
3373 thread->initialize_tlab();
|
|
3374
|
|
3375 // Crucial that we do not have a safepoint check for this thread, since it has
|
|
3376 // not been added to the Thread list yet.
|
|
3377 { Threads_lock->lock_without_safepoint_check();
|
|
3378 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
|
|
3379 // avoid this thread trying to do a GC before it is added to the thread-list
|
|
3380 thread->set_active_handles(JNIHandleBlock::allocate_block());
|
|
3381 Threads::add(thread, daemon);
|
|
3382 Threads_lock->unlock();
|
|
3383 }
|
|
3384 // Create thread group and name info from attach arguments
|
|
3385 oop group = NULL;
|
|
3386 char* thread_name = NULL;
|
|
3387 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
|
|
3388 group = JNIHandles::resolve(args->group);
|
|
3389 thread_name = args->name; // may be NULL
|
|
3390 }
|
|
3391 if (group == NULL) group = Universe::main_thread_group();
|
|
3392
|
|
3393 // Create Java level thread object and attach it to this thread
|
|
3394 bool attach_failed = false;
|
|
3395 {
|
|
3396 EXCEPTION_MARK;
|
|
3397 HandleMark hm(THREAD);
|
|
3398 Handle thread_group(THREAD, group);
|
|
3399 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
|
|
3400 if (HAS_PENDING_EXCEPTION) {
|
|
3401 CLEAR_PENDING_EXCEPTION;
|
|
3402 // cleanup outside the handle mark.
|
|
3403 attach_failed = true;
|
|
3404 }
|
|
3405 }
|
|
3406
|
|
3407 if (attach_failed) {
|
|
3408 // Added missing cleanup
|
|
3409 thread->cleanup_failed_attach_current_thread();
|
|
3410 return JNI_ERR;
|
|
3411 }
|
|
3412
|
|
3413 // mark the thread as no longer attaching
|
|
3414 // this uses a fence to push the change through so we don't have
|
|
3415 // to regrab the threads_lock
|
|
3416 thread->set_attached();
|
|
3417
|
|
3418 // Enable stack overflow checks
|
|
3419 thread->create_stack_guard_pages();
|
|
3420
|
|
3421 // Set java thread status.
|
|
3422 java_lang_Thread::set_thread_status(thread->threadObj(),
|
|
3423 java_lang_Thread::RUNNABLE);
|
|
3424
|
|
3425 // Notify the debugger
|
|
3426 if (JvmtiExport::should_post_thread_life()) {
|
|
3427 JvmtiExport::post_thread_start(thread);
|
|
3428 }
|
|
3429
|
|
3430 *(JNIEnv**)penv = thread->jni_environment();
|
|
3431
|
|
3432 // Now leaving the VM, so change thread_state. This is normally automatically taken care
|
|
3433 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
|
|
3434 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
|
|
3435 // needed.
|
|
3436
|
|
3437 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
|
|
3438
|
|
3439 // Perform any platform dependent FPU setup
|
|
3440 os::setup_fpu();
|
|
3441
|
|
3442 return JNI_OK;
|
|
3443 }
|
|
3444
|
|
3445
|
|
3446 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
|
|
3447 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
|
|
3448 if (!vm_created) {
|
|
3449 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
|
|
3450 return JNI_ERR;
|
|
3451 }
|
|
3452
|
|
3453 JNIWrapper("AttachCurrentThread");
|
|
3454 jint ret = attach_current_thread(vm, penv, _args, false);
|
|
3455 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
|
|
3456 return ret;
|
|
3457 }
|
|
3458
|
|
3459
|
|
3460 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
|
|
3461 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
|
|
3462 VM_Exit::block_if_vm_exited();
|
|
3463
|
|
3464 JNIWrapper("DetachCurrentThread");
|
|
3465
|
|
3466 // If the thread has been deattacted the operations is a no-op
|
|
3467 if (ThreadLocalStorage::thread() == NULL) {
|
|
3468 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
|
|
3469 return JNI_OK;
|
|
3470 }
|
|
3471
|
|
3472 JavaThread* thread = JavaThread::current();
|
|
3473 if (thread->has_last_Java_frame()) {
|
|
3474 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
|
|
3475 // Can't detach a thread that's running java, that can't work.
|
|
3476 return JNI_ERR;
|
|
3477 }
|
|
3478
|
|
3479 // Safepoint support. Have to do call-back to safepoint code, if in the
|
|
3480 // middel of a safepoint operation
|
|
3481 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
|
|
3482
|
|
3483 // XXX: Note that JavaThread::exit() call below removes the guards on the
|
|
3484 // stack pages set up via enable_stack_{red,yellow}_zone() calls
|
|
3485 // above in jni_AttachCurrentThread. Unfortunately, while the setting
|
|
3486 // of the guards is visible in jni_AttachCurrentThread above,
|
|
3487 // the removal of the guards is buried below in JavaThread::exit()
|
|
3488 // here. The abstraction should be more symmetrically either exposed
|
|
3489 // or hidden (e.g. it could probably be hidden in the same
|
|
3490 // (platform-dependent) methods where we do alternate stack
|
|
3491 // maintenance work?)
|
|
3492 thread->exit(false, JavaThread::jni_detach);
|
|
3493 delete thread;
|
|
3494
|
|
3495 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
|
|
3496 return JNI_OK;
|
|
3497 }
|
|
3498
|
|
3499 DT_RETURN_MARK_DECL(GetEnv, jint);
|
|
3500
|
|
3501 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
|
|
3502 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
|
|
3503 jint ret = JNI_ERR;
|
|
3504 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
|
|
3505
|
|
3506 if (!vm_created) {
|
|
3507 *penv = NULL;
|
|
3508 ret = JNI_EDETACHED;
|
|
3509 return ret;
|
|
3510 }
|
|
3511
|
|
3512 if (JvmtiExport::is_jvmti_version(version)) {
|
|
3513 ret = JvmtiExport::get_jvmti_interface(vm, penv, version);
|
|
3514 return ret;
|
|
3515 }
|
|
3516
|
|
3517 #ifndef JVMPI_VERSION_1
|
|
3518 // need these in order to be polite about older agents
|
|
3519 #define JVMPI_VERSION_1 ((jint)0x10000001)
|
|
3520 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
|
|
3521 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
|
|
3522 #endif // !JVMPI_VERSION_1
|
|
3523
|
|
3524 Thread* thread = ThreadLocalStorage::thread();
|
|
3525 if (thread != NULL && thread->is_Java_thread()) {
|
|
3526 if (Threads::is_supported_jni_version_including_1_1(version)) {
|
|
3527 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
|
|
3528 ret = JNI_OK;
|
|
3529 return ret;
|
|
3530
|
|
3531 } else if (version == JVMPI_VERSION_1 ||
|
|
3532 version == JVMPI_VERSION_1_1 ||
|
|
3533 version == JVMPI_VERSION_1_2) {
|
|
3534 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
|
|
3535 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
|
|
3536 ret = JNI_EVERSION;
|
|
3537 return ret;
|
|
3538 } else if (JvmtiExport::is_jvmdi_version(version)) {
|
|
3539 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
|
|
3540 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
|
|
3541 ret = JNI_EVERSION;
|
|
3542 return ret;
|
|
3543 } else {
|
|
3544 *penv = NULL;
|
|
3545 ret = JNI_EVERSION;
|
|
3546 return ret;
|
|
3547 }
|
|
3548 } else {
|
|
3549 *penv = NULL;
|
|
3550 ret = JNI_EDETACHED;
|
|
3551 return ret;
|
|
3552 }
|
|
3553 }
|
|
3554
|
|
3555
|
|
3556 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
|
|
3557 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
|
|
3558 if (!vm_created) {
|
|
3559 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
|
|
3560 return JNI_ERR;
|
|
3561 }
|
|
3562
|
|
3563 JNIWrapper("AttachCurrentThreadAsDaemon");
|
|
3564 jint ret = attach_current_thread(vm, penv, _args, true);
|
|
3565 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
|
|
3566 return ret;
|
|
3567 }
|
|
3568
|
|
3569
|
|
3570 } // End extern "C"
|
|
3571
|
|
3572 const struct JNIInvokeInterface_ jni_InvokeInterface = {
|
|
3573 NULL,
|
|
3574 NULL,
|
|
3575 NULL,
|
|
3576
|
|
3577 jni_DestroyJavaVM,
|
|
3578 jni_AttachCurrentThread,
|
|
3579 jni_DetachCurrentThread,
|
|
3580 jni_GetEnv,
|
|
3581 jni_AttachCurrentThreadAsDaemon
|
|
3582 };
|