Disabling range checking during array access.

I believe there should be a way to accomplish the above via some javac option.
Context: I'm writing a pure Java-based volume renderer (i.e., no JNI), with emphasis on speed. I'm not happy with the fact that even though I can trivially guarantee legal array indices to my 3D-array accesses (say, via outer for-loops covering the volume extents... a construct I can't escape anyways in the context of my application), Java continues to distrust my programming abilities and goes on 'needlessly' performing range checking for me!
I fully appreciate the fact that in 99% of the cases, most developers would want it the way we have it currently. However, the language should not constrain everybody unnecessarily all the time.
Anyone, any insights on how to work this around (in Java)? Thanks!
Harry

>
Anyone, any insights on how to work this around (in
Java)? Thanks!Short of writing your own VM implementation this won't be happening.
Alternatively you can change your approach in a way that this is not a bottleneck for you.
But honestly this question has come up before and while you may not want to hear it the short answer is no. So I would recommend you look in a different direction to solve your problem.

Similar Messages

  • How to insure range check elimination optimization is occurring

    I'm wondering if there is a way to tell whether or not the optimizer is employing the range check elimination optimization on a particular loop. Although I'd rather not, I can generate the assembly code via -XX:+PrintOptoAssembly, but I'm not exactly sure what I'm looking for. Any help is greatly appreciated.
    I'm also wondering if the range check optimization only occurs for arrays, or if it is used when the object being accessed is a List for example, although once I have an answer to my first question, I can investigate this on my own.
    Thanks!

    I suspect it's left deliberately unspecified to allow flexibility among versions and platforms, and even within a given run on a given JVM. However, everything I've read strongly suggests that [url http://java.sun.com/developer/technicalArticles/Interviews/devinsight_1/]writing dumb code, such as your basic, standard array loop, will enable that optimization to be performed (as hotspot is specifically tuned to common idioms):
    for (int i = 0; i < arr.length; i++) {
      // do stuff that does change the value of i or arr
    }Alternatively, using a foreach loop should be expected to generate this kind of code.
    As for the bottleneck, is what you're doing in one loop iteration so small that it's reasonable to expect that that operation, plus incrementing i will not dwarf the array bounds comparison? Or have you been able to determine that the check itself is the bottleneck?

  • Preventing disabling of check box - item okay in MIGO

    Dear all,
    In the MIGO transaction - during goods receipt for subcontractor material, when the item (incoming) is checked as item okay - automatically the child material (Material sent to subcontractor) is also activated thereby to enable 543 movement.
    Unfortunately some of the users are disabling the check box (for the material sent to the subcontractor). This prevents depletion of stock from the subcontractor but inflates the stock of the incoming material.
    Is there any way - either by authorisation check to prevent users disabling the check box or other methods?
    Experts suggestion is required in this regard.
    Thanks in advance.
    Regards,
    M.M

    Hi Magesh,
    it is possible. use Badi enhancement
    MB_MIGO_BADI goto
    IF_EX_MB_MIGO_BADI~POST_DOCUMENT
    tell your abaper to put the logic like
    parent ID and subcomponent ID need to select
    if either of two is not selected
    then error message will prompt not to save the GR doc since subcomponent is unselected.
    reference field EKPO check PSTYP
    hope this help you.
    regards,
    Maia
    Edited by: Maia on Apr 18, 2008 3:07 PM

  • Disable duplicate check for address in customer creation

    we use OE_HEADERS_IFACE_ALL, OE_LINES_IFACE_ALL, and OE_CUSTOMER_INFO_IFACE_ALL to upload sales order from third party system into OFS. For every sales order, we would like the system to create 1 new ship-to address and 1 new bill-to address.
    However, when the address has been created in OFS, subsequent creation of the address will fail with the following error message.
    Duplicate SHIP_TO ADDRESS found for SOSHMI003_S. Please correct the data.
    1) how can we disable to address duplicate checking.
    problem background
    Our third party system need to pass to OFS the customer info, address info and sales order info. For customer info, we can use the customer_number as reference key between 2 systems, so we can control if the customer already created in third party system (ie: created in OFS also), the third party system will not create the customer again.
    However, for address, there is no such a reference key that we can use, unless we are sending back the invoice_to_org_id and ship_to_org_id to the third party system, which we dun want. we want a one way data flow.
    please share us if you have a solution on this. many many thanks.

    Hi Ankur,
    please note that only duplicated IDs are being checked during the C4C data migration or migration simulation step.
    The system will not perform in the migration workbench the duplicate check logic which considers and weights the content of different fields of the customer (name, address, etc).
    Kind regards
    Bernd

  • Authorization Check during PR creation

    Hi,
    I would like to put authorization check in PR creation,particularly
    in the account assignment category. I have created a customized authorization object ZX with the field activity and knttp. My problem now is what userexit i can put this authorization check during PR creation/change...
    i have 2 kind of user, 1st is have access to all and 2nd user is create/change/display to kntpp = K. how can i accomplish this?
    appreciate all the help.points will be given. thanks
    she

    thanks. at the moment, we dont have abaper to work on the coding and to check userexit..so i was hitting this by all the help i can get from this forum. anyone had tried or worked with the same requirement? appreciate if i can have the abap coding at the same time the userexit being used.
    the requirement is to restrict user to create/edit PR to a certain account assignment KNTTP.
    i have created the customized auth object (knttp  -( actvy, knttp)..the customized auth object is maintained to each user role.
    Eg. user1 - knttp (acvtyt =*, knttp=KNTTP)
           user2- knttp(actvt = *, knttp=K)
    so if user2 try to create/change PR with account assigment not equal to K - cost center.
    error message will be trigger during authorization check.
    appreciate all the help.. thanks in advance.

  • SaaS Sharepoint, ADFS claims and internal AD-CA: How to disable CRL check in Sharepoint?

    Hi all,
    We have an external SaaS provider with a Sharepoint 2010 server. In our AD, there is an ADFS server providing ADFS claims to Sharepoint and thus giving SSO functionality. For the ADFS service and its token-signing and encrypting, there is one certificate
    drawn from an internal AD Enterprise CA server.
    The problem is that, when the company user opens the Sharepoint URL, it is extreamly slow to open, however it does eventualy open. The SaaS provider has indicated its an issue with the CRL checking. I know on other Microsoft products there are ways to disable
    CRL checking but haven't found such information for sharepoint.
    We have provided the CRL files and the provider has added these and for as long as they are valid things work as expected. However the CRL then expires and we are back to square one.
    Can anyone help?
    I have found this question has been asked before here:
    https://social.technet.microsoft.com/Forums/sharepoint/en-US/431bae5c-c502-4723-9de7-663abd46658e/saas-sharepoint-adfs-claims-and-internal-adca-how-to-disable-crl-check-in-sharepoint?forum=sharepointgeneralprevious
    Unfortunately the answer doesn't satisfy my situation. Also not sure I agree that self signed certificates should be used and it's quite a topic for debate in ADFS circles... However in my situation we don't have the option to change ADFS to use self signed
    certificates as the ADFS service is in use with 12+ other service providers all who have no issue using the Token Signing Certificate even though they cant access the CRL either.
    Thanks for your help,
    James

    Hi,
    As I understand, you want to disable CRL check in SharePoint.
    There are four workarounds:
    1. Give your servers an outbound Internet connection
    2. Edit the hosts file at “%SYSTEMROOT%\\System32\\drivers\\etc\\hosts” to fool the CRL check into thinking your local machine is crl.microsoft.com by pointing it at 127.0.0.1 (localhost).
    3. Edit the registry to disable CRL checking by setting the State DWORD to 146944 decimal (SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\WinTrust\\Trust Providers\\Software Publishing for both HKEY_USERS\\.DEFAULT and HKEY_CURRENT_USER) PowerShell.
    4. Edit the machine.configs and disable it there.
    The article gives you the details about the four workaround.
    More reference:
    http://basementjack.com/uncategorized/powershell-script-to-disable-certificate-revocation-list-crl/
    https://kb4sp.wordpress.com/2013/10/08/certificate-revocation-list-disable-check/
    Best regards,
    Sara Fan

  • Disable Availability Check on Sales Order  But Activate on Outbound Delv

    Greetings all experts !
    Currently, there's a new request to create a new processes whereby during the sales order creation, no availability check will be in place but material will still be posted to production planning ( TOR ).
    Availability check instead should be activated  during the creation of outbound delivery.
    I have already configured in such a way that the relevant sch line item ( VOV6 ) - availability check is unchecked and TOR is checked.
    But during creation of sales order, availability check is still in place for material specified.
    I have check on the necessary requirement class and requirement type settings. Fyi, requirement class used - availability check is ticked. Could this be the reason even though i have disabled availability check on sch line ?
    I have tried to untick the availability check setting in requirement class  ( OVZG ), and while this can disable the availability check in Sales order, but that configuration will also disable availability check in outbound delivery.
    My queries :
    1 ) What are the configurations that I need to look into to cater to the above request. To disable availabilty in sales order but instead, run availability in outbound delivery ?
    2 ) Is there any way I can disable the availability check on based on sales order type using userexit or function module ?
    3 ) Is there any additional function module/bapi/userexit that i can implement to force outbound delivery to run availability check ?
    My apologies for such lenghty message here but really really need some valuable feedback here as I'm totally at lost with the new requirement for now.
    Many thanks in advance.
    Warmest Regards,
    Edie O

    In SPRO
    goto SD>Schedule line>Define schedule line categories
    here check if the schedule line category associated with your mentioned order has a flag ticked for Availability.
    Availability check for sales
    You must carry out an availability check for the following transaction.
    The indicator is determined as a proposal in conjunction with the respective requirements type. It can be changed in individual shipping transactions. However, only one restriction is effective.
    Example
    You do not set an indicator for maintaining the requirements type. In this case, no availability check is carried out. This is independent of the selection in the respective transaction.
    You set an indicator for maintaining the requirements type. In this case you can decide whether or not you require an availability check for the relevant transaction.
    reward points if it helps
    regards
    Biju

  • Error during table access in SRM portal

    Hello Experts,
    Recently we have upgraded the R/3 System 4.6C to ECC 6.0. We are trying to change the quantity of PO and order again in SRM 7.0 portal , but it is throwing an error 'Error during table access'. This happens only when we try to change the ordered PO and only after the R3 system is upgraded.I have checked across SDN forum before posting, but was not able to get relevant information.
    Let me know if any configuration at the basis/functional level or any BADI needs to be checked, or if any OSS notes is there for ECC 6.0.
    I checked two of them and it was not relevant to ECC.
    Could you please help me in solving the issue?
    Thanks in Advance,
    M M Jaffer.

    Hi Mathweus,
    the namespace seems to be standard SAP name space with pre delivered content. So i think you can not regenerate the proxy in the same namespace. you need to copy the data type, message type and service interface to custom SWCV and namespace and then regenerate the proxy.
    regards,
    Harish

  • Check during Excise Invoice J1IIN

    Check during Excise Invoice J1IIN
    While using J1IIN transaction for excise i want to check the posting date entered by the user with the
    actual GI date during PGI ... so i try to find badi or user exit called when we click  form billing and enter billing doc and posting date in J1IIN transaction , but i could not find any enhancement ,  please suggest me any badi/userexit or what shud i do apply this check.
    The check is that excise posting date shud note be greater than actual PGI date .
    Ankesh

    Hi Ankesh,
    You can use this function module - J_1I7_USEREXIT_EXCISE_BEF_SAVE

  • I have multiple devices that have my iCloud E-mail, I want to disable the E-Mail on some of the devices but keep it on others, I do not have physical access to the ones I want to disable but I do have access to the devices I want to keep receiving mc

    I have multiple devices that have my iCloud E-mail, I want to disable the E-Mail on some of the devices but keep it on others, I do not have physical access to the ones I want to disable but I do have access to the devices I want to keep receiving mail, can I do this with a simple password reset or will that still leave all devices enabled?

    The simple way would be to uncheck 'Mail' in System Preferences (or Settings)>iCloud, but as you would need access to the devices in question to do that you will have to change your password, at http://appleid.apple.com. You will then need to sign out and back on all the devices you want to be able to receive mail, and it's important that you follow this procedure and note the warning:
    Firstly, if you have 'Find My iPhone/iPad/iMac' enabled on any of your devices, turn it off.
    Go to http://appleid.apple.com and click 'Manage your Apple ID'. Sign in with the current ID.
    Where it says 'Password & Security' and gives your current ID email address, click 'edit'.
    Enter your new password and click 'Save changes'.
    Now you will need to go to each of your devices and sign out in System Preferences (or Settings)>iCloud - 'Sign out' on a Mac, 'Delete this account' on an iOS device (this will not delete the account from the server).
    Then sign back in with your new ID. Your iCloud data will disappear from your devices when you sign out, but reappear when you sign back in.
    I re-iterate: before you start, turn off 'Find My Mac' (or whatever) or you will need the services of Support.
    The devices on which you have not changed the password will throw up continual error messages as they attempt to contact iCloud and fail.

  • The user name or password is incorrect in the CRM system checks during installation

    Hi everyone
    I'm installing CRM 2013 on 2 servers (server 2012) - CRM Full server + SQL Server 2012.
    I created 2 service accounts for this - CRMSVC + CRMSANDBOX (one for sandbox and another one for all the rest).
    I'm getting the following error in the system checks during setup:
    I've verified a billion times that the service accounts and passwords are valid - I even tried using different service accounts - same problem. As for now I also added the service accounts to the local admins groups just to be sure that it's not some permissions
    issue (I also added them to the 'log on as service' & performance logs groups). 
    If i try to use NETWORK SERVICES instead of a service account - the installation goes through flawlessly - no issues at all.
    I'm also gonna say that i tried another installation on a fresh server - SAME ISSUE.
    So for now my ideas are either it's a GPO somehow blocking the service accounts - or some kind of other security issue.
    I also found out that the security event log shows these two errors when these show up in the system checks:
    Inside i found 'NULL SID' entry - it does not recognize the service accounts account and 0xC0000064 in the Sub
    Status Codes
    It's not a typo issue so don't bother - if i write a wrong password in purpose - it actually says that the password i typed for domain\service account is incorrect - here it seems that the service account is not being recognized.
    Any ideas anyone?
    Thanks
    Please vote if you find my post helpful - Thanks

    Not sure you understood my point.
    The installation process necessarily runs under the account of the installing user. The installation will query AD to identify information about the service accounts, and will add them to the relevant CRM AD groups. It is possible that the installing user
    account does not have sufficient privileges on the AD objects for the service accounts to be able to identify them, and to add them to groups. This scenario is consistent with the errors that you get, and also with being able to install CRM to run under NetworkServices
    (which doesn't have its own AD object)
    Microsoft CRM MVP - http://mscrmuk.blogspot.com/ http://www.excitation.co.uk
    Hi David
    I understand this, but as far as i know running it under NETWORK SERVICES will add the machine names to the OU security groups - hence the user installing still needs to have delegated permissions on that OU. Anyway as mentioned above - ignoring the checks
    and running the installation solved this and also added the accounts to the security groups - so this whole mess looks like some bug to me - not sure i will ever find out what it was :)
    Please vote if you find my post helpful - Thanks

  • Disabling the Check for Update feature in 10.1.3

    Hi,
    I work at a government facility that has tight security restrictions regarding downloading software. We are about to prepare a software delivery package for JDeveloper 10.1.3 that will let our IT department install JDeveloper on all of our developer workstations. One thing we would like to do as part of this deployment package is to disable the Check for Updates and PlugIn feature of JDeveloper. Is there a setting in a configuration file that controls this menu item?
    Thanks,
    Richard

    Hi,
    Is the requirement to disable the check for updates feature altogether (i.e. remove the menu item), or to just disable the automatic check that happens on startup?
    There isn't currently a documented way to totally disable the feature altogether, however it's possible to add such a feature in a future service update if necessary.
    There is a potential way in which you can modify the behavior of the wizard such that it will always find no updates (the menu item will still be present, however). If this is an acceptable solution to you, let me know and I'll fill you in on the details.
    Thanks,
    Brian

  • Disabling a Check box

    In my BSP View am using two check box.
    I want to disable one check box when the other one gets checked and vice versa.
    Right now am doing with some logics and with server side events.I want to do this in the client side.
    In <b>Java script</b> how i can code this in my BSP page where the checkbox is created with the help of htmlb.
    Kindly help me in this regards.

    Hi,
    put this in your documentHead:
    <script language="javascript">
         function uncheckyes(){
          document.form_id.yes.disabled='TRUE';
          </script>
    <script language="javascript">
         function uncheckno(){
          document.form_id.no.disabled='TRUE';
          </script>
    and this in your layout (documentBody):
           <htmlb:checkboxGroup columnCount = "2"
                                         id          = "expense" >
                      <htmlb:checkbox text          = "Yes"
                                      id            = "yes"
                                      onClientClick = "javascript:uncheckno()" >
                      </htmlb:checkbox>
                      <htmlb:checkbox text          = "no"
                                      id            = "no"
                                      onClientClick = "javascript:uncheckyes()" >
                      </htmlb:checkbox>
                    </htmlb:checkboxGroup>
    grtz
    Koen

  • Sales BOM - Delivery Quantity check during post goods issue

    I am working on a problem in my company.  We are running ECC6.0 ehp 4.  We are using standard ERLA functionality with sales bom (5) for product kits.  Delivery manager has requested that we investigate a system check during delivery post goods issue.  THe problem is that when shipper processes delivery, if they have to backorder they update pick and delivery quanity on the TAE item.  They should also update TAQ delivery quantity, so that backorder amount is correct.  If they make data entry error, backorder quantity is incorrect.  The delivery manager has tried a number of attempts to re-train and correct mistakes.  He is now asking that SAP issue a hard error if TAQ and TAE delivery item quantities are not the same.
    I have searched on SAP Notes, Forms, and Google and do not see solution.  I know that at delviery item category there is a minimum qty check for the item category.  I've not found a user exit or configuration point that checks quanities.  Does anyone know of out of the box solution?  Or where would I put in custom user exit?
    Test Case
    Create Standard Order
    Enter Material with Sales BOM
    ITEM A     Qty 10
    BOM explodes with Item categories
    ITEM A     TAQ parent
    ITEM B     TAE child
    Create Delivery
    Delivery has item categories TAQ and TAE
    TAE is pickable, TAQ no pick
    Process TAE
         Pick quantity of 5 items
         Change delivery quantity to 5 items
         Forget to change TAQ delivery quantity
         Pack 5 items
    Post Goods Issue the delivery.
    Is there are requirement/routine than can be run at time of PGI that checks TAQ delivery quantity is the same as TAE delivery quantity.  If quanities are not the same, show hard error and message do not allow PGI to complete.
    Thank you
    Tony Romain

    I tried setting that field in the sale order this morning.  By defaulting it to "C"; I was able to get warning message for TAE line.  I was able to post goods with TAE and TAQ, being different quantities.  I need the check to determine if TAE and TAQ delivery quantity are different.  Using this fields seems to be line specific.  Thanks for the suggestion.  I now know what that field does to the delivery.
    I rewarded points.
    Thanks,
    Tony

  • Hard Check During Delivery Creation

    Hello Experts,
    Need your advice. I am stuck up in a enhancement issue during delivery creation. i am working for passenger vehicle company.
    Back ground Info.
    the company procures chassis from vendor & builds bus body over it. there are various types of chassis & each is uniquely identified in SAP by Material No. & also mentioned in BOM created for bus. when chassis is received , equipment is created using T-code IE01. After this one more equipment is created for bus which is called BBD Serial No. The equipment for BBD serial no holds chassis serial no. My issue is at the time of creation of delivery using T-code VL01N the user puts the BBD Serial No manually in a dialog box provided, This BBD Serial No is not capturing in the importing structure IT_XLIPS of BADI "LE_SHP_DELIVERY_PROC" Method "Delivery_Final_Check".
    I have to put a check during delivery creation for consumption of Chassis , if the Chassis is consumed during production phase a Mat Doc will be generated with movement Type 261. As such we don't knew the Mat Doc for Chassis Serial no Consumed during prod phase. so to derive chassis no in the BADI against which we have to check for it's consumption. The user provide BBD Serial no in a standard dialog box in VL01N.
    Can we use Field Exit for this or any other BADI Should work.
    Best Regards
    Priyesh Shah

    Hi Priyesh,
    Below steps may help you to get the value of the standard dialog box provided in the screen.
    1. Find the field name of the standard dialog box provided in the the screen for BBD Serial no.
    2. Implement below code in the BAdI "LE_SHP_DELIVERY_PROC" method.
    FIELD-SYMBOLS: <fs> TYPE BBDFIELDTYPE.
    ASSIGN ('(SAPMV50A)BBDFIELDNAME') TO <fs>.
    Now the field symbol <fs> will hold the value passed in the dialog box.
    Please try and let me know if it is working or not.
    Thanks
    Gangadhar

Maybe you are looking for