src/share/vm/prims/whitebox.cpp
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@@ -432,12 +432,29 @@
// Make sure that wbclass is loaded by the null classloader
instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
Handle loader(ikh->class_loader());
if (loader.is_null()) {
ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
- jint result = env->RegisterNatives(wbclass, methods, sizeof(methods)/sizeof(methods[0]));
- if (result == 0) {
+ bool result = true;
+ // one by one registration natives for exception catching
+ for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) {
+ if (env->RegisterNatives(wbclass, methods + i, 1) != 0) {
+ result &= false;
+ if (env->ExceptionCheck()) {
+ tty->print_cr("Warning: exception on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature);
+ env->ExceptionClear();
+ result &= false;
+ } else {
+ // register is failed w/o exception
+ env->UnregisterNatives(wbclass);
+ result &= false;
+ break;
+ }
+ }
+ }
+
+ if (result) {
WhiteBox::set_used();
}
}
}
}