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comparison src/share/vm/prims/whitebox.cpp @ 10196:dc7db03f5aa2

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8012337: Change Whitebox implementation to make absence of method in Whitebox.class not fatal Reviewed-by: kvn, vlivanov
author iignatyev
date Thu, 25 Apr 2013 11:04:36 -0700
parents 2a9d97b57920
children 9ce110b1d14a
comparison
equal deleted inserted replaced
10195:e12c9b3740db 10196:dc7db03f5aa2
434 if (WhiteBoxAPI) { 434 if (WhiteBoxAPI) {
435 // Make sure that wbclass is loaded by the null classloader 435 // Make sure that wbclass is loaded by the null classloader
436 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); 436 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
437 Handle loader(ikh->class_loader()); 437 Handle loader(ikh->class_loader());
438 if (loader.is_null()) { 438 if (loader.is_null()) {
439 ResourceMark rm;
439 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 440 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
440 jint result = env->RegisterNatives(wbclass, methods, sizeof(methods)/sizeof(methods[0])); 441 bool result = true;
441 if (result == 0) { 442 // one by one registration natives for exception catching
443 jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
444 for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) {
445 if (env->RegisterNatives(wbclass, methods + i, 1) != 0) {
446 result = false;
447 if (env->ExceptionCheck() && env->IsInstanceOf(env->ExceptionOccurred(), exceptionKlass)) {
448 // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native
449 // ignoring the exception
450 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature);
451 env->ExceptionClear();
452 } else {
453 // register is failed w/o exception or w/ unexpected exception
454 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);
455 env->UnregisterNatives(wbclass);
456 break;
457 }
458 }
459 }
460
461 if (result) {
442 WhiteBox::set_used(); 462 WhiteBox::set_used();
443 } 463 }
444 } 464 }
445 } 465 }
446 } 466 }