Bug: JVMTI's NativeMethodBind never called for Class.getSuperclass() method

This issue is specific to the JRockit JVM only, since it doesnt occur in the HotSpotVM.
The JRockit JVM version is:
jrockit-jdk1.6.0_29-R28.2.0-4.1.0
I am using the JVMTI's NativeMethodBind function to instrument the getSuperClass() method.
However, it seems all the other native methods of java.lang.Class are indeed passed through the NativeMethodBind event, except for getSuperClass().
Here is a bit of code:
void JNICALL
NativeMethodBind(jvmtiEnv *jvmti_env,
                    JNIEnv* jni_env,
                    jthread thread,
                    jmethodID method,
                    void* address,
                    void** new_address_ptr)
     jvmtiPhase phase;
     jvmtiError status=jvmti_env->GetPhase(&phase);
     if((phase==JVMTI_PHASE_PRIMORDIAL) || (phase== JVMTI_PHASE_ONLOAD))
//store method info in vectors
          nativeMethodIdVector.push_back(method);
          nativeMethodAddressVector.push_back(address);
          return;
     if(!nativeBound)
          if(!checkedNativeList)
               checkedNativeList= true;
               if(doCheckNativeList(jvmti_env))
                    nativeBound = true;
                    return;
          char * name;
          char* sig;
          char* genericP;
          jvmtiError status= jvmti_env->GetMethodName(method,&name,&sig,&genericP);
          const char* a = name;
          printf("%s\n",a);
bool doCheckNativeList(jvmtiEnv *jvmti_env)
     bool foundSuperClassMethod = false;
     for(std::vector<int>::size_type i = 0; i != nativeMethodIdVector.size(); i++)
          jmethodID currentmethodid= nativeMethodIdVector;
          void* currentmethodAddress= nativeMethodAddressVector[i];
          char * name;
          char* sig;
          char* genericP;
          jvmti_env->GetMethodName(currentmethodid,&name,&sig,&genericP);
          const char* a = name;
          printf("%s\n",a);
     return foundSuperClassMethod;
The output of this is the following. Note that even though methods like Class.forName0() are included, getSuperclass() is not
debuggerEvent
enterExceptionHandler
generateVirtualCode
generateFixedCode
throwPendingType
registerNatives
initializeClass
fillInStackTrace0
registerNatives
currentTimeMillis
nanoTime
registerNatives
start0
stop0
isAlive
suspend0
resume0
setPriority0
yield
sleep
currentThread
countStackFrames
interrupt0
isInterrupted
holdsLock
getThreads
dumpThreads
registerNatives
getName0
getInterfaces
getSigners
setSigners
getModifiers
getDeclaredFields0
getDeclaredMethods0
getDeclaredConstructors0
getProtectionDomain0
setProtectionDomain0
getDeclaredClasses0
getDeclaringClass
getGenericSignature
getRawAnnotations
getConstantPool
desiredAssertionStatus0
getEnclosingMethod0
getPrimitiveClass
getStackAccessControlContext
getCallerClass
initProperties
initialize
getFileSystem
initIDs
initIDs
registerNatives
retrieveDirectives
getPrimitiveHashCode0
forName0
intern0
getFieldOffset
getBooleanAttributes
mapLibraryName
canonicalize0
registerFinalizer
load
initIDs
initIDs
set
initIDs
allocLargeObjectOrArray
setIn0
invokeMethod
setOut0
setErr0
findSignal
handle0
setErrorMode
open
readBytesPinned
available
isJDK15OrBetter
getNewTla
initNative
close0
list
canonicalizeWithPrefix0
getFinalizeeArraySize
waitForFinalizees
waitForActivatedQueue
findLoadedClass0
isRetransformClassesSupported0
availableProcessors
delete0
VMSupportsCS8
checkIfThreadOwnsLock
convertThinLockedToFatLocked
waitForNotifySignal
throwException
clone0
find
getVersion0
initOptionalSupportFields
getStartupTime
getVmArguments0
maxMemory
getSystemTimeZoneID
getLength
getClassContext
initIDs
open
length
seek
writeBytesPinned
initIDs
initIDs
initIDs
initIDs
read0
read1
pread0
pread1
readv0
write0
write1
pwrite0
pwrite1
writev0
preClose0
close0
force0
close0
checkAndTransferLazyLocked
checkAndTransferLazyLocked
finalize
getUTF8At0
getIntAt0
defineClass0
runClinit
initIDs
init
deflateBytes
defineClass0
end
init
inflateFast
latestUserDefinedLoader
end
park0
park0
park0
park0
setHasRetransformableTransformers
getAllLoadedClasses0
retransformClasses0
unpark0
yield
sleep
options
init
classID
stackTraceID
threadID
rotate
shutdown
start
stop
onCloneRecording
onStartRecording
onStopRecording
add
remove
buffer
flush
write
setEnabled
setThreshold
setPeriod
getPeriod
descriptors
addConstPool
removeConstPool
storeConstPool
getSystemPackage0
defineClass1
hasStaticInitializer
d2i
open
close0
Edited by: user11362013 on Jan 11, 2012 4:56 PM
Edited by: user11362013 on Jan 11, 2012 4:57 PM
Edited by: user11362013 on Jan 11, 2012 4:58 PM

Can somebody please look at this. The formatting options in the forum dont seem to support code styles.
I am willing to provide more samples or a full on reproducible code zip if somebody is willing to take a look at this.
This issue is really hampering our development.

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Well the long and probably verbotten way is to fix the design.
The shorter, possibly (and only in the short term because in the long term the bad design will cost you dearly when it comes to making changes and maintaining this application) allowed method is that you are going to have to have instances of both Dialogs available at the same time in your application. Now as you said they are dialogs so you can't display them both at the same time but you need to display them both. You only need to have them both in existence and then show and hide them as desired.
This is going to take some code tweaking both inside these classes and with other classes as well. You have no choice in this matter. If you cannot change calling classes then you'll have to give up because it's hopeless.
You must be able to access one instance from the other (and vice versa) perhaps through the parent class. I don't know what works best for you.

TABLE for Class the methods

Hi ALL,
Can anyone tell me the DB table where all the Classs and its methods are stored..?
Also if one could tell me that for any enhancement class implementation where are the OVERWRITE exit methods stored..
Regards
Rajivb Kanoria

Hi Ill give u the complete steps for what im looking for...
Go to sfw1(switch transaction).
enter a switch like MILL_EHP_01A and execute.
A new transaction in which we get the package for the switch.
double click on the package name 'MILL_EHP_01A_SWITCH'.
traverse to Utilities->display_object list.
u will go to package builder.
click on dropdown 'enhancement' on the browser window,
click on 'Enhancement implementations' dropdown.U will get all the implementations name.
Double click on any one.
Now in the Right side u will see a class name on the button in the attributes tab.
click on the overwrite methods tab.
U will see the overwrite method dere( I want the tables where these methods are stored).
Click on the button with the class name.GO TO METHODS TAB.
u will reach the class builder.
There is a overwrite-EXIT column.
In that some methods will have a botton for overwrite exit , some will not.
Where this info is stored about Overwrite Exits./?
Regards
Rajiv Kanoria

Sample Javadoc comments for classes or methods using generics?

Can anyone show me a sample Javadoc comment for a class or a method that uses generics. All my attempts so far ended up in warnings from the Javadoc tool..
I also looked in the Sun forums, in the Javadoc documentation, but nowhere could I find anything that would help me write correct javadoc comments.
Any luck for you guys?
Thanks a lot,
-Laurent

Thanks man, sorry it must seem obvious to you, but
for some reason I couldn't get it to work.No. The first time I also had to ask.
Now an even more difficult (for me) question: how
would you refer to that method in a @see or {@link
..} javadoc comment?Manually erase the method:
* The see tag refers to this method
* @param <T> a type variable
* @see #foo(Object)
<T> void foo(T t) {}

[svn:bz-trunk] 21111: Bug: BLZ-578 - [Coverity] potential race condition for class flex.messaging.MessageBroker

Revision: 21111
Revision: 21111
Author:   [email protected]
Date:     2011-04-21 06:12:37 -0700 (Thu, 21 Apr 2011)
Log Message:
Bug: BLZ-578 - potential race condition for class flex.messaging.MessageBroker
QA: Yes
Doc: No
Details: The bug was fixed by change 19598 already, but also adding a minor fix to not call setSystemSettings in initThreadLocal method becuase there are no thread local variables in MessageBroker anymore.
Ticket Links:
    http://bugs.adobe.com/jira/browse/BLZ-578
Modified Paths:
    blazeds/trunk/modules/core/src/flex/messaging/MessageBroker.java

Table name for list of methods for given class

Hi Experts,
Is there any table where I can get list of methods in the class?
Req: Input parameter: Class Name
Output: List of all methods in it
Note: As we know, we will have different program names and method names for Classes and Methods. I am okay if I can find table which contains method programs for given class program name.
Regards,
Naveen Inuganti

Hi,
Check table TMDIR.
Thanks,
Venkatesh

Runtime Analysis For Classes

Hi All,
Can we do runtime analysis for Classes and Methods in the same way as program and function module?
Thanks & Regards,
Samir

You can have a look at this thread Transaction SAT - Analyze Performance of Classes in which the OP has written a blog for the question.

Discussion -- Call for answers : Class and Component

Dear all,
1. Component has a clear seperation between the specification and implementation? I can't understand here.The interface define some operations,but eventually we need coding to realize it. Where is the speration?
A class also has methods and coding to realize it. But why we never say a class has a seperation between the specification and implementation?
2. Component has interface; Java has interface. Are they the same idea or different?
Call for answers.
Thanks
Kevin

Hi, Kevin,
First of all, I need to clarify some terminologies and then try to anwser your questions.
(1) Interface only defines operations, but does not specifies how to implement those operations. In Java, abstract class and interface are interfaces. In CORBA, IDL is interface which can be implemented by differenct programming languages.
(2) Java class is both an interface and an implementation, because it not only defines operations, but also implements the operations.
(3) Component provides some specific functionalities, but is not a full-featured application. Usually, a full-featured application consists of many different components. A component can be large or small. A component can be as large as consisting of tens or hundreds of interfaces and classes, like EJB container and server. On the other hand, a component can be as small as comprising only one class; suppose you write a component to calculate foreign currancy conversion.
(4)Specification is a written document that tries to standardize the development of a large component. A specification specififies each party's responsibilities, such as application developers'responsibilities, vendor's responsibilities, administrtor's responsibilities and so on. Also, it specifies the contracts (interfaces) between each party. In doing so, a component can be made very reuseful and can be plug-in and play; changing different vendor's component without breaking application developer's owner code.
In Java world, you see a lot of specifications, such as JDBC, EJB and JMS. When SUN defines those specifications, they use Java interfaces rather other classes to specify interfaces. Here, clear seperation between interface and implementation is very important. (1) If a class is used to specify an interface, SUN must provide implementation for the class. But, the purpose of the specification to allow different vendors to provide implementation.(2) Implementation details can very complex and different vendors may implement the same component very differently. A specification only specifies interfaces but not the implementation. The implementation is up to the vendors. Any implementation is ok as long as they comply to the contracts (interfaces). For instance, one vendor may implement a specified interface using one class and another vendor may implement the same interface using three classes. If a class is used to specify an interface, you restrict vendors' implementation. Usually, in a specification, if you find a class that is used to defines an interface, it means that SUN will provide common implementation for it and vendors do not need to implement it.
In OO design and programing, clearly seperating interfaces from implementations is vital. We should program interface rather than program implementation.
Thanks.
Tommy

Never once has my phone updated without deleting everything. It says "iTunes has detected an iPhone in recovery mode. You must restore this iPhone before it can be used with iTunes. I can't call for help because my phone is frozen on the screen with iTune

Never once has my phone updated without deleting everything. It says "iTunes has detected an iPhone in recovery mode. You must restore this iPhone before it can be used with iTunes. I can't call for help because my phone is frozen on the screen with iTunes. On line live chat won't chat until I give them my serial number which I can't get to because its frozen and can't call for the same reason!! Omg! Someone please help me!?

Morning AppleHlumamkhululi,
Thanks for using Apple Support Communities.
In most cases, the connected iPod needs to be restored.
For more information on this, take a look at this article:
iTunes has detected an iPod in recovery mode - Use iTunes to restore
http://support.apple.com/kb/ts1456
Best of luck,
Mario

Technician never showed up, never called & now can't come out for 3 more days???

Yesterday afternoon I lost my TV, phone and internet service (X1 Platform). There were no outages in the area so customer service was called. After spending 45 minutes on the phone going through all the troubleshooting, the rep said a tech would have to come out. She said they could come out the next day, gave us our choice of times and we picked 8:30am-12:30pm. She said the tech would call 30 minutes before he showed up. Today the tech never calls, never shows and my husband stayed home all morning for this. He called customer service and they told him we didn't have an appointment scheduled. I called and was told the same thing and then the rep said in order to make another appointment we would have to do the troubleshooting again. I told her there was no way that was happening. She said she could see that troubleshooting had already been done, but for some reason the last rep never made an appointment for the tech to come out. I asked her if that made any sense at all, that they would just leave the issue unresolved like that. Magically, she suddenly found where the last rep had requested that a truck come out, but she still couldn't find the date and time. Then she tried to find the tech, but she couldn't - apparently he disappeared into a black hole. The rep then tells me I have to set up a new appointment (which she can now suddenly do without troubleshooting) and the earliest available is Sunday from 5-7. Are you kidding me??? Because either customer service at Comcast or the tech screwed up, my time without service went from 1 day to 4 days??? She said she would make the appointment and then transfer me to a supervisor because only a supervisor is able to change the appointment date. At this point, I've been on the phone for 45 minutes and then I spent an additional 15 minutes waiting for a supervisor. The rep did come back every few minutes and tell me that the line was still busy and she hadn't forgotten about me...until the point where she disconnected me. I know very well that she had my phone number to call back because it's on my account. Did she? No. So, I called back again. Explained the entire situation to a different rep. She said that a supervisor can't change the appointment time - only a dispatcher can. She took my husband's number and said that a dispatcher would call if a time becomes available for a tech to come out. If none becomes available, we're out of luck until Sunday night. I asked to talk to a supervisor. She had the nerve to ask why. She transferred me to someone who, of course, didn't answer the phone and I got to leave a voice message. That person (whoever it was) hasn't called me back. I don't think it's too much to ask that, when the mistake is Comcast's, you do whatever you can to make it right. It's not as if the tech showed up and nobody was home. My husband sat there for 4 hours waiting. We have also spent a good portion of our day on the phone trying to get someone to come out today or tomorrow at the latest. If I switched to a different company, they would be able to come out before Sunday to install new service, but you can't be bothered to make things right for an existing customer when you screw up.

Fun update (no, not really). Called back numerous times since my last post with no luck. I'm pretty sure I've talked to every department conceivable at least once to try to get someone at Comcast to live up to the term "customer service" and get someone out to my house ASAP since they were a no-show today. One of the more entertaining conversations was with a supposed supervisor who informed me that she looked at my account and could see where I talked to a rep yesterday about my phone service being out and they had me check for a dial tone. I told her that absolutely never happened - we only tried troubleshooting the error code on the TV. This model employee proceeded to argue with me and kept repeating that we had checked for a dial tone. She refused to stop talking when I tried to correct her and proceeded to talk non-stop for a full minute before I pretty much screamed into the phone that, while we have the phone service, we don't use it, and we don't even have a phone hooked up in the house, so how in the world could we possibly have checked for a dial tone??? If someone isn't out tomorrow to fix this, I'm switching to U-verse. Nobody should be have to deal with customer service that doesn't care about the customer and can't admit to or fix their mistakes.

Bug: JVMTI's NativeMethodBind never called for Class.getSuperclass() method

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