693 WB_END |
693 WB_END |
694 |
694 |
695 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) |
695 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) |
696 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); |
696 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); |
697 Universe::heap()->collect(GCCause::_last_ditch_collection); |
697 Universe::heap()->collect(GCCause::_last_ditch_collection); |
|
698 #if INCLUDE_ALL_GCS |
|
699 if (UseG1GC) { |
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700 // Needs to be cleared explicitly for G1 |
|
701 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); |
|
702 } |
|
703 #endif // INCLUDE_ALL_GCS |
698 WB_END |
704 WB_END |
699 |
705 |
700 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) |
706 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) |
701 Universe::heap()->collect(GCCause::_wb_young_gc); |
707 Universe::heap()->collect(GCCause::_wb_young_gc); |
702 WB_END |
708 WB_END |
836 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
842 offset_for_field(field_name, object, vmSymbols::bool_signature()); |
837 bool ret = (object->bool_field(offset) == JNI_TRUE); |
843 bool ret = (object->bool_field(offset) == JNI_TRUE); |
838 return ret; |
844 return ret; |
839 } |
845 } |
840 |
846 |
|
847 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { |
|
848 ResourceMark rm; |
|
849 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
|
850 |
|
851 // one by one registration natives for exception catching |
|
852 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); |
|
853 CHECK_JNI_EXCEPTION(env); |
|
854 for (int i = 0, n = method_count; i < n; ++i) { |
|
855 // Skip dummy entries |
|
856 if (method_array[i].fnPtr == NULL) continue; |
|
857 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { |
|
858 jthrowable throwable_obj = env->ExceptionOccurred(); |
|
859 if (throwable_obj != NULL) { |
|
860 env->ExceptionClear(); |
|
861 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { |
|
862 // NoSuchMethodError is thrown when a method can't be found or a method is not native. |
|
863 // Ignoring the exception since it is not preventing use of other WhiteBox methods. |
|
864 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", |
|
865 method_array[i].name, method_array[i].signature); |
|
866 } |
|
867 } else { |
|
868 // Registration failed unexpectedly. |
|
869 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", |
|
870 method_array[i].name, method_array[i].signature); |
|
871 env->UnregisterNatives(wbclass); |
|
872 break; |
|
873 } |
|
874 } |
|
875 } |
|
876 } |
841 |
877 |
842 #define CC (char*) |
878 #define CC (char*) |
843 |
879 |
844 static JNINativeMethod methods[] = { |
880 static JNINativeMethod methods[] = { |
845 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, |
881 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, |
938 if (WhiteBoxAPI) { |
974 if (WhiteBoxAPI) { |
939 // Make sure that wbclass is loaded by the null classloader |
975 // Make sure that wbclass is loaded by the null classloader |
940 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); |
976 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); |
941 Handle loader(ikh->class_loader()); |
977 Handle loader(ikh->class_loader()); |
942 if (loader.is_null()) { |
978 if (loader.is_null()) { |
943 ResourceMark rm; |
979 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); |
944 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI |
980 WhiteBox::register_extended(env, wbclass, thread); |
945 bool result = true; |
981 WhiteBox::set_used(); |
946 // one by one registration natives for exception catching |
|
947 jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); |
|
948 CHECK_JNI_EXCEPTION(env); |
|
949 for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) { |
|
950 if (env->RegisterNatives(wbclass, methods + i, 1) != 0) { |
|
951 result = false; |
|
952 jthrowable throwable_obj = env->ExceptionOccurred(); |
|
953 if (throwable_obj != NULL) { |
|
954 env->ExceptionClear(); |
|
955 if (env->IsInstanceOf(throwable_obj, exceptionKlass)) { |
|
956 // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native |
|
957 // ignoring the exception |
|
958 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature); |
|
959 } |
|
960 } else { |
|
961 // register is failed w/o exception or w/ unexpected exception |
|
962 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", methods[i].name, methods[i].signature); |
|
963 env->UnregisterNatives(wbclass); |
|
964 break; |
|
965 } |
|
966 } |
|
967 } |
|
968 |
|
969 if (result) { |
|
970 WhiteBox::set_used(); |
|
971 } |
|
972 } |
982 } |
973 } |
983 } |
974 } |
984 } |
975 JVM_END |
985 JVM_END |