3228 } |
3228 } |
3229 return NULL; |
3229 return NULL; |
3230 JVM_END |
3230 JVM_END |
3231 |
3231 |
3232 |
3232 |
3233 // Utility object for collecting method holders walking down the stack |
|
3234 class KlassLink: public ResourceObj { |
|
3235 public: |
|
3236 KlassHandle klass; |
|
3237 KlassLink* next; |
|
3238 |
|
3239 KlassLink(KlassHandle k) { klass = k; next = NULL; } |
|
3240 }; |
|
3241 |
|
3242 |
|
3243 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) |
3233 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) |
3244 JVMWrapper("JVM_GetClassContext"); |
3234 JVMWrapper("JVM_GetClassContext"); |
3245 ResourceMark rm(THREAD); |
3235 ResourceMark rm(THREAD); |
3246 JvmtiVMObjectAllocEventCollector oam; |
3236 JvmtiVMObjectAllocEventCollector oam; |
3247 // Collect linked list of (handles to) method holders |
|
3248 KlassLink* first = NULL; |
|
3249 KlassLink* last = NULL; |
|
3250 int depth = 0; |
|
3251 vframeStream vfst(thread); |
3237 vframeStream vfst(thread); |
3252 |
3238 |
3253 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
3239 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
3254 // This must only be called from SecurityManager.getClassContext |
3240 // This must only be called from SecurityManager.getClassContext |
3255 Method* m = vfst.method(); |
3241 Method* m = vfst.method(); |
3259 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
3245 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
3260 } |
3246 } |
3261 } |
3247 } |
3262 |
3248 |
3263 // Collect method holders |
3249 // Collect method holders |
|
3250 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
3264 for (; !vfst.at_end(); vfst.security_next()) { |
3251 for (; !vfst.at_end(); vfst.security_next()) { |
3265 Method* m = vfst.method(); |
3252 Method* m = vfst.method(); |
3266 // Native frames are not returned |
3253 // Native frames are not returned |
3267 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
3254 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
3268 Klass* holder = m->method_holder(); |
3255 Klass* holder = m->method_holder(); |
3269 assert(holder->is_klass(), "just checking"); |
3256 assert(holder->is_klass(), "just checking"); |
3270 depth++; |
3257 klass_array->append(holder); |
3271 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); |
|
3272 if (first == NULL) { |
|
3273 first = last = l; |
|
3274 } else { |
|
3275 last->next = l; |
|
3276 last = l; |
|
3277 } |
|
3278 } |
3258 } |
3279 } |
3259 } |
3280 |
3260 |
3281 // Create result array of type [Ljava/lang/Class; |
3261 // Create result array of type [Ljava/lang/Class; |
3282 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
3262 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
3283 // Fill in mirrors corresponding to method holders |
3263 // Fill in mirrors corresponding to method holders |
3284 int index = 0; |
3264 for (int i = 0; i < klass_array->length(); i++) { |
3285 while (first != NULL) { |
3265 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
3286 result->obj_at_put(index++, first->klass()->java_mirror()); |
3266 } |
3287 first = first->next; |
|
3288 } |
|
3289 assert(index == depth, "just checking"); |
|
3290 |
3267 |
3291 return (jobjectArray) JNIHandles::make_local(env, result); |
3268 return (jobjectArray) JNIHandles::make_local(env, result); |
3292 JVM_END |
3269 JVM_END |
3293 |
3270 |
3294 |
3271 |