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  • Server high CPU load issue! ( Cpanel + CentOS 5)

    - by kenby
    Our server cpu load is high todays sometimes reaches to 560! .. We have the lastest Cpanel/whm and the kernel is update!while the load average is : Load Averages: 39.05 75.01 45.33 the apache log is: Current Time: Sunday, 30-Jan-2011 01:50:13 EST Restart Time: Saturday, 29-Jan-2011 21:51:20 EST Parent Server Generation: 2 Server uptime: 3 hours 58 minutes 53 seconds Total accesses: 149493 - Total Traffic: 2.4 GB CPU Usage: u9.17 s10.66 cu42.82 cs0 - .437% CPU load 10.4 requests/sec - 174.6 kB/second - 16.7 kB/request 121 requests currently being processed, 42 idle workers W_WWW.W_..W.W_W_WCWW..W...W.WWW.WWWW.WW.C_W_.W.WW.WC..W.WW.WW .W.W.W...WWWW...WW.CC.C.._W.WC.WW_WW._W....W.WWW.W.WWW.W..W WW.....WW.W_WWWWW..WCRW..WWCW.WWW__.WWWWCW_W._._WW_W...W...W _W..W..WW.W...._W..._WW.W.WWW.._W.WWW.WWW....WW_.C...W._ Scoreboard Key: "_" Waiting for Connection, "S" Starting up, "R" Reading Request, "W" Sending Reply, "K" Keepalive (read), "D" DNS Lookup, "C" Closing connection, "L" Logging, "G" Gracefully finishing, "I" Idle cleanup of worker, "." Open slot with no current process What cause this high cpu load while the apache cpu load is fine? the mysql process is also fine.. the cpu load is still high even if I stop mail-http-mysql services!

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  • Windows 7 computer apparently connected to working wireless network but can't access router page or internet

    - by Hemmer
    I can consistently connect successfully to both the router and the internet using both my phone and two different computers which strongly suggests that the issue is at the desktop end. Only my Windows 7 desktop machine has stopped getting internet connectivity. It manages to connect to the router's network using the Windows 7 wireless dialog, but can't access either the router configuration page (192.168.1.1) or the internet in general once connected. The strange thing is the wireless network icon in the notification bar shows a full strength signal, sometimes with the yellow warning triangle. The output of ipconfig /all is: Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter Physical Address. . . . . . . . . : 00-12-17-94-98-90 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.1.102(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 08 June 2011 10:32:16 Lease Expires . . . . . . . . . . : 08 June 2011 12:32:16 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 194.168.4.100 194.168.8.100 NetBIOS over Tcpip. . . . . . . . : Enabled I've tried renewing DCHP settings disabling IPv6 resetting TCP stack uninstalling and reinstalling WLAN card drivers I've not installed anything new or made any changes to my knowledge, this just happened out of the blue. The only possible change is my friend connected his macbook to the network, but that has gone now and shouldn't have any lasting effects? TCP/IPv4 is set to automatically find an IP address. Antivirus is MSE (up to date) and doesn't detect anything unusual. Any ideas where to go next? Any help is greatly appreciated. For reference, the results of ipconfig /all on one of the working computers is: Ethernet adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom 802.11g Network Adapter Physical Address. . . . . . . . . : 00-16-CF-67-E5-97 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.1.100 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 194.168.4.100 194.168.8.100 Lease Obtained. . . . . . . . . . : 08 June 2011 10:26:38 Lease Expires . . . . . . . . . . : 08 June 2011 12:26:38 UPDATE: Still not working, but I've managed to find a temporary workaround by tethering my Android phone, effectively becoming a new wifi adapter. Will be moving to a new flat so will test if it is a network specific thing - maybe the card has got damaged somehow? Also will see if the card is working with Linux soon.

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  • Silverlight Cream for June 17, 2010 -- #885

    - by Dave Campbell
    In this Issue: Zoltan Arvai, Antoni Dol, Jeff Prosise, David Anson, and John Papa. Shoutouts: Rob Davis has a World Cup Football Stadium tour in Silverlight, Azure, and Bing Maps up: The World Cup Map... cruise around this... tons of features. The Silverlight Team Blog reports that NBC sports is streaming the US Open in Silverlight Adam Kinney announced Expression Studio 4 Launch keynote videos are available From SilverlightCream.com: Data Driven Applications with MVVM Part III: Validation, Bringing the UI Closer Zoltan Arvai's 3rd (and final) part of the Data-Driven MVVM apps is up at SilverlightShow. In this final section he is focusing on validation, and discussion of closer integration to the view. Focus on FocusVisualElement in Silverlight buttons Antoni Dol has a cool post up about the FocusVisualElement, and uses a button to demonstrate how it can be used. Dynamic XAP Discovery with Silverlight MEF Jeff Prosise is discussing Silverlight and MEF ... but better than the normal loading XAP files ... he's doing dynamic discovery of XAP files ... and makes it look easy! Updated analysis of two ways to create a full-size Popup in Silverlight David Anson revisits a prior post with an eye toward Silverlight 4. The feature he's discussing is that you can now hook the Resized event without having browser zoom disabled... and he demonstrates it's use in the code from the old post. Silverlight as a Transmedia Platform (Silverlight TV #33) Jesse Liberty joins John Papa this week with Silverlight TV #33, discussing Transmedia and Silverlight as a Transmedia Platform. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Desktop Fun: Music Icon Packs

    - by Asian Angel
    If you really love music and want to liven up your desktop then get ready to create a desktop concert with our Music Icon Packs collection. Note: To customize the icon setup on your Windows 7 & Vista systems see our article here. Using Windows XP? We have you covered here. Sneak Preview For our desktop example we decided to go with a touch of anime musical fun. The icons used are from the Guitar Icons set shown below. Note: Wallpaper can be found here. An up close look at the icons that we used… Notes icon set 1 *.png format only Download Notes icon set 2 *.png format only Download Notes icon set 3 *.png format only Download Notes icon set 4 *.png format only Download Big Band Set 1 *.ico format only Download Big Band Set 2 *.ico format only Download Acoustic Guitars *.ico and .png format Download Acoustic Guitar *.ico format only Download Guitar Icons *.ico format only Download Guiter Skulll *.ico format only Download Dented Music *.ico format only Download Music Icons *.ico format only Download Ipod Mini *.ico format only Download MP3 Players Icons *.ico format only Download MusicPhones icon *.ico and .png format Download Wanting more great icon sets to look through? Be certain to visit our Desktop Fun section for more icon goodness! Similar Articles Productive Geek Tips Desktop Fun: Video Game Icon PacksDesktop Fun: Sci-Fi Icons Packs Series 2Why Did Windows Vista’s Music Folder Icon Turn Yellow?Restore Missing Desktop Icons in Windows 7 or VistaAdd Home Directory Icon to the Desktop in Windows 7 or Vista TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Download Songs From MySpace Steve Jobs’ iPhone 4 Keynote Video Watch World Cup Online On These Sites Speed Up Windows With ReadyBoost Awesome World Cup Soccer Calendar Nice Websites To Watch TV Shows Online

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  • [MINI HOW-TO] Remove the Search Helper Extension from Firefox

    - by Asian Angel
    If you found a new surprise extension added to Firefox after the June Patch from Microsoft, then you are likely to be rather unhappy right now. Join us as we show you how to remove the Search Helper extension from your browser. An Unexpected Addition to Your Extensions You may be wondering what the new mysterious extension that showed up is for. Its’ purpose is to help the Bing Toolbar better integrate with your browser. Unless you have the Bing Toolbar installed you really do not need this cluttering your browser up. So how do you get rid of it? Removing the Extension In order to remove the extension you will need to navigate to the following location: C:\Program Files\Microsoft\Search Enhancement Pack\Search Helper Once there delete the “firefoxextension folder”…that is all there is to it. If you want to remove the search helper add-on for Internet Explorer then delete the “SEPsearchhelperie.dll file” while you are here. Note: You may need to have administrator rights in order to delete the folder. No more Search Helper Extension! If you are unhappy about this update being snuck into your system, following these instructions will remove it. Microsoft Support Page About Update KB982217 Similar Articles Productive Geek Tips Remove the New Tab Button in FirefoxAdd Search Forms to the Firefox Search BarAdd Notes to Zoho Notebook in FirefoxOrganize Your Firefox Search Engines Into FoldersManually Remove Skype Extension from Firefox TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Steve Jobs’ iPhone 4 Keynote Video Watch World Cup Online On These Sites Speed Up Windows With ReadyBoost Awesome World Cup Soccer Calendar Nice Websites To Watch TV Shows Online 24 Million Sites

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  • Desktop Fun: Moody Skies Wallpapers

    - by Asian Angel
    The sky can personify a multitude of moods and emotions based on its’ appearance. Inspire your own thoughts and feelings with our Moody Skies Wallpaper collection. Note: Click on the picture to see the full-size image—these wallpapers vary in size so you may need to crop, stretch, or place them on a colored background in order to best match them to your screen’s resolution. For more wallpapers be certain to see our great collections in the Desktop Fun section. Similar Articles Productive Geek Tips Windows 7 Welcome Screen Taking Forever? Here’s the Fix (Maybe)Desktop Fun: Starship Theme WallpapersDesktop Fun: Underwater Theme WallpapersDesktop Fun: Starscape Theme WallpapersDesktop Fun: Fantasy Theme Wallpapers TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Download Songs From MySpace Steve Jobs’ iPhone 4 Keynote Video Watch World Cup Online On These Sites Speed Up Windows With ReadyBoost Awesome World Cup Soccer Calendar Nice Websites To Watch TV Shows Online

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  • High Jinks, Hi Jacks, Exceptional DBA Awards and PASS

    - by Rodney
    The countdown to PASS has counted down.  The day after tomorrow I will board a plane, like many others, on my way for the 4th year in a row to SQL PASS Summit.  The anticipation has been excruciating but luckily I have this little thing called a day job as a DBA that has kept me busy and not thinking too much about the event. Well that is not exactly true since my beautiful wife works for PASS so we get to talk about SQL from the time we wake up until late in the evening. I would not have it any other way and I feel very fortunate to be a part of this great event and to have been chosen as the Exceptional DBA Award judge also for the 4th year in a row.  This year, I will have been again tasked with presenting the award to the winner, Mr. Jeff Moden and it will be a true honor to meet him in person as I have read many of his articles on SSC and have attended his session at PASS previously.  The speech is all ready but one item remains, which will be a surprise to all who attend the party on Tuesday night in Seattle (see links below).  Let's face it, Exceptional DBAs everywhere work very hard protecting our data stores, tuning queries, mentoring, saving money, installing clusters, etc and once in a while there is time to be exceptionally non-professional and have a bit of fun. Once incident that happened this year that falls under the High Jinks category was when my network admin asked if I could Telnet into a SQL instance and see if I could make the connection through the firewall that he had just configured. I was able to establish a connection on port 1433 and it occurred to me that it would be very interesting if I could actually run T-SQL queries via a Telnet session much like you might do with an SMTP server. With that thought, I proceeded to demonstrate this could be possible by convincing my senior DBA Shawn McGehee that I was able to do so. At first he did not believe me. It shook his world view.  It was inconceivable.  What I had done, behind the scenes, of course, was to copy and rename SQLCMD.exe to Telnet.exe and used it to connect and run a simple, "Select * from sys.databases" on the SQL instance. I think if it had been anyone other than Shawn I could have extended this ruse indefinitely but he caught on within 30 seconds. It was a fun thirty seconds though. On the High Jacks side of the house, which is really merged to be SQL HACKS, I finally, after several years of struggling with how to connect to an untrusted domain like in a DMZ with a windows account in SSMS, I stumbled upon a solution that does away with the requirement to use SQL Authentication.  While "Runas" is a great command to use to run an application with a higher privileged account, I had not previously been able to figure out how to connect to the remote domain with SSMS and "Runsas". It never connected and caused a login failure every time for the remote windows domain account. Then I ran across an option for "Runas",   "/netonly".  This option postpones the login until a connection is made and only then passes the remote login you supply when you first launch SSMS with the "Runas" command. So a typical shortcut would look like: "C:\Windows\System32\runas.exe /netonly /user:remotedomain.com\rodlandrum "C:\Program Files\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\Ssms.exe" You will want to make sure the passwords are synced between the two domains, your local domain and the remote domain, otherwise you may have account lockout issues, but I have found in weeks of testing this is a stable solution. Now it is time to get ready to head for Seattle. Please, if you see me (@SQLBeat) or my wife (@Karlakay22) please run up and high five me (wait..High Jinks.High Jacks.High Fives.Need to change the title) or give me a big bear hug if you are strong enough to lift me off the ground. And if you do actually do that, I will think you are awesome and will not embarrass you by crying out for help or complaining of a broken back or sciatic nerve damage. And now the links to others who have all of the details. First, for the MVP Deep Dives 2, of which, like John, I was lucky enough to be able to participate in this year. http://www.simple-talk.com/community/blogs/johnm/archive/2011/09/29/103577.aspx And the details of the SSC party where the Exceptional DBA of 2011, Jeff Moden, will be awarded. http://www.simple-talk.com/community/blogs/rebecca_amos/archive/2011/10/05/103661.aspx   Cheers! Rodney

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  • VS 11 Beta merge tool is awesome, except for resovling conflicts

    - by deadlydog
    If you've downloaded the new VS 11 Beta and done any merging, then you've probably seen the new diff and merge tools built into VS 11.  They are awesome, and by far a vast improvement over the ones included in VS 2010.  There is one problem with the merge tool though, and in my opinion it is huge.Basically the problem with the new VS 11 Beta merge tool is that when you are resolving conflicts after performing a merge, you cannot tell what changes were made in each file where the code is conflicting.  Was the conflicting code added, deleted, or modified in the source and target branches?  I don't know (without explicitly opening up the history of both the source and target files), and the merge tool doesn't tell me.  In my opinion this is a huge fail on the part of the designers/developers of the merge tool, as it actually forces me to either spend an extra minute for every conflict to view the source and target file history, or to go back to use the merge tool in VS 2010 to properly assess which changes I should take.I submitted this as a bug to Microsoft, but they say that this is intentional by design. WHAT?! So they purposely crippled their tool in order to make it pretty and keep the look consistent with the new diff tool?  That's like purposely putting a little hole in the bottom of your cup for design reasons to make it look cool.  Sure, the cup looks cool, but I'm not going to use it if it leaks all over the place and doesn't do the job that it is intended for. Bah! but I digress.Because this bug is apparently a feature, they asked me to open up a "feature request" to have the problem fixed. Please go vote up both my bug submission and the feature request so that this tool will actually be useful by the time the final VS 11 product is released.

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  • how do you make a "concurrent queue safe" lazy loader (singleton manager) in objective-c

    - by Rich
    Hi, I made this class that turns any object into a singleton, but I know that it's not "concurrent queue safe." Could someone please explain to me how to do this, or better yet, show me the code. To be clear I want to know how to use this with operation queues and dispatch queues (NSOperationQueue and Grand Central Dispatch) on iOS. Thanks in advance, Rich EDIT: I had an idea for how to do it. If someone could confirm it for me I'll do it and post the code. The idea is that proxies make queues all on their own. So if I make a mutable proxy (like Apple does in key-value coding/observing) for any object that it's supposed to return, and always return the same proxy for the same object/identifier pair (using the same kind of lazy loading technique as I used to create the singletons), the proxies would automatically queue up the any messages to the singletons, and make it totally thread safe. IMHO this seems like a lot of work to do, so I don't want to do it if it's not gonna work, or if it's gonna slow my apps down to a crawl. Here's my non-thread safe code: RMSingletonCollector.h // // RMSingletonCollector.h // RMSingletonCollector // // Created by Rich Meade-Miller on 2/11/11. // Copyright 2011 Rich Meade-Miller. All rights reserved. // #import <Foundation/Foundation.h> #import "RMWeakObjectRef.h" struct RMInitializerData { // The method may take one argument. // required SEL designatedInitializer; // data to pass to the initializer or nil. id data; }; typedef struct RMInitializerData RMInitializerData; RMInitializerData RMInitializerDataMake(SEL initializer, id data); @interface NSObject (SingletonCollector) // Returns the selector and data to pass to it (if the selector takes an argument) for use when initializing the singleton. // If you override this DO NOT call super. + (RMInitializerData)designatedInitializerForIdentifier:(NSString *)identifier; @end @interface RMSingletonCollector : NSObject { } + (id)collectionObjectForType:(NSString *)className identifier:(NSString *)identifier; + (id<RMWeakObjectReference>)referenceForObjectOfType:(NSString *)className identifier:(NSString *)identifier; + (void)destroyCollection; + (void)destroyCollectionObjectForType:(NSString *)className identifier:(NSString *)identifier; @end // ==--==--==--==--==Notifications==--==--==--==--== extern NSString *const willDestroySingletonCollection; extern NSString *const willDestroySingletonCollectionObject; RMSingletonCollector.m // // RMSingletonCollector.m // RMSingletonCollector // // Created by Rich Meade-Miller on 2/11/11. // Copyright 2011 Rich Meade-Miller. All rights reserved. // #import "RMSingletonCollector.h" #import <objc/objc-runtime.h> NSString *const willDestroySingletonCollection = @"willDestroySingletonCollection"; NSString *const willDestroySingletonCollectionObject = @"willDestroySingletonCollectionObject"; RMInitializerData RMInitializerDataMake(SEL initializer, id data) { RMInitializerData newData; newData.designatedInitializer = initializer; newData.data = data; return newData; } @implementation NSObject (SingletonCollector) + (RMInitializerData)designatedInitializerForIdentifier:(NSString *)identifier { return RMInitializerDataMake(@selector(init), nil); } @end @interface RMSingletonCollector () + (NSMutableDictionary *)singletonCollection; + (void)setSingletonCollection:(NSMutableDictionary *)newSingletonCollection; @end @implementation RMSingletonCollector static NSMutableDictionary *singletonCollection = nil; + (NSMutableDictionary *)singletonCollection { if (singletonCollection != nil) { return singletonCollection; } NSMutableDictionary *collection = [[NSMutableDictionary alloc] initWithCapacity:1]; [self setSingletonCollection:collection]; [collection release]; return singletonCollection; } + (void)setSingletonCollection:(NSMutableDictionary *)newSingletonCollection { if (newSingletonCollection != singletonCollection) { [singletonCollection release]; singletonCollection = [newSingletonCollection retain]; } } + (id)collectionObjectForType:(NSString *)className identifier:(NSString *)identifier { id obj; NSString *key; if (identifier) { key = [className stringByAppendingFormat:@".%@", identifier]; } else { key = className; } if (obj = [[self singletonCollection] objectForKey:key]) { return obj; } // dynamic creation. // get a class for Class classForName = NSClassFromString(className); if (classForName) { obj = objc_msgSend(classForName, @selector(alloc)); // if the initializer takes an argument... RMInitializerData initializerData = [classForName designatedInitializerForIdentifier:identifier]; if (initializerData.data) { // pass it. obj = objc_msgSend(obj, initializerData.designatedInitializer, initializerData.data); } else { obj = objc_msgSend(obj, initializerData.designatedInitializer); } [singletonCollection setObject:obj forKey:key]; [obj release]; } else { // raise an exception if there is no class for the specified name. NSException *exception = [NSException exceptionWithName:@"com.RMDev.RMSingletonCollector.failed_to_find_class" reason:[NSString stringWithFormat:@"SingletonCollector couldn't find class for name: %@", [className description]] userInfo:nil]; [exception raise]; [exception release]; } return obj; } + (id<RMWeakObjectReference>)referenceForObjectOfType:(NSString *)className identifier:(NSString *)identifier { id obj = [self collectionObjectForType:className identifier:identifier]; RMWeakObjectRef *objectRef = [[RMWeakObjectRef alloc] initWithObject:obj identifier:identifier]; return [objectRef autorelease]; } + (void)destroyCollection { NSDictionary *userInfo = [singletonCollection copy]; [[NSNotificationCenter defaultCenter] postNotificationName:willDestroySingletonCollection object:self userInfo:userInfo]; [userInfo release]; // release the collection and set it to nil. [self setSingletonCollection:nil]; } + (void)destroyCollectionObjectForType:(NSString *)className identifier:(NSString *)identifier { NSString *key; if (identifier) { key = [className stringByAppendingFormat:@".%@", identifier]; } else { key = className; } [[NSNotificationCenter defaultCenter] postNotificationName:willDestroySingletonCollectionObject object:[singletonCollection objectForKey:key] userInfo:nil]; [singletonCollection removeObjectForKey:key]; } @end RMWeakObjectRef.h // // RMWeakObjectRef.h // RMSingletonCollector // // Created by Rich Meade-Miller on 2/12/11. // Copyright 2011 Rich Meade-Miller. All rights reserved. // // In order to offset the performance loss from always having to search the dictionary, I made a retainable, weak object reference class. #import <Foundation/Foundation.h> @protocol RMWeakObjectReference <NSObject> @property (nonatomic, assign, readonly) id objectRef; @property (nonatomic, retain, readonly) NSString *className; @property (nonatomic, retain, readonly) NSString *objectIdentifier; @end @interface RMWeakObjectRef : NSObject <RMWeakObjectReference> { id objectRef; NSString *className; NSString *objectIdentifier; } - (RMWeakObjectRef *)initWithObject:(id)object identifier:(NSString *)identifier; - (void)objectWillBeDestroyed:(NSNotification *)notification; @end RMWeakObjectRef.m // // RMWeakObjectRef.m // RMSingletonCollector // // Created by Rich Meade-Miller on 2/12/11. // Copyright 2011 Rich Meade-Miller. All rights reserved. // #import "RMWeakObjectRef.h" #import "RMSingletonCollector.h" @implementation RMWeakObjectRef @dynamic objectRef; @synthesize className, objectIdentifier; - (RMWeakObjectRef *)initWithObject:(id)object identifier:(NSString *)identifier { if (self = [super init]) { NSString *classNameForObject = NSStringFromClass([object class]); className = classNameForObject; objectIdentifier = identifier; objectRef = object; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(objectWillBeDestroyed:) name:willDestroySingletonCollectionObject object:object]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(objectWillBeDestroyed:) name:willDestroySingletonCollection object:[RMSingletonCollector class]]; } return self; } - (id)objectRef { if (objectRef) { return objectRef; } objectRef = [RMSingletonCollector collectionObjectForType:className identifier:objectIdentifier]; return objectRef; } - (void)objectWillBeDestroyed:(NSNotification *)notification { objectRef = nil; } - (void)dealloc { [[NSNotificationCenter defaultCenter] removeObserver:self]; [className release]; [super dealloc]; } @end

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  • Efficient inline templates and C++

    - by Darryl Gove
    I've talked before about calling inline templates from C++, I've also talked about calling inline templates efficiently. This time I want to talk about efficiently calling inline templates from C++. The obvious starting point is that I need to declare the inline templates as being extern "C": extern "C" { int mytemplate(int); } This enables us to call it, but the call may not be very efficient because the compiler will treat it as a function call, and may produce suboptimal code based on that premise. So we need to add the no_side_effect pragma: extern "C" { int mytemplate(int); #pragma no_side_effect(mytemplate) } However, this may still not produce optimal code. We've discussed how the no_side_effect pragma cannot be combined with exceptions, well we know that the code cannot produce exceptions, but the compiler doesn't know that. If we tell the compiler that information it may be able to produce even better code. We can do this by adding the "throw()" keyword to the template declaration: extern "C" { int mytemplate(int) throw(); #pragma no_side_effect(mytemplate) } The following is an example of how these changes might improve performance. We can take our previous example code and migrate it to C++, adding the use of a try...catch construct: #include <iostream extern "C" { int lzd(int); #pragma no_side_effect(lzd) } int a; int c=0; class myclass { int routine(); }; int myclass::routine() { try { for(a=0; a<1000; a++) { c=lzd(c); } } catch(...) { std::cout << "Something happened" << std::endl; } return 0; } Compiling this produces a slightly suboptimal code sequence in the hot loop: $ CC -O -xtarget=T4 -S t.cpp t.il ... /* 0x0014 23 */ lzd %o0,%o0 /* 0x0018 21 */ add %l6,1,%l6 /* 0x001c */ cmp %l6,1000 /* 0x0020 */ bl,pt %icc,.L77000033 /* 0x0024 23 */ st %o0,[%l7] There's a store in the delay slot of the branch, so we're repeatedly storing data back to memory. If we change the function declaration to include "throw()", we get better code: $ CC -O -xtarget=T4 -S t.cpp t.il ... /* 0x0014 21 */ add %i1,1,%i1 /* 0x0018 23 */ lzd %o0,%o0 /* 0x001c 21 */ cmp %i1,999 /* 0x0020 */ ble,pt %icc,.L77000019 /* 0x0024 */ nop The store has gone, but the code is still suboptimal - there's a nop in the delay slot rather than useful work. However, it's good enough for this example. The point I'm making is that the compiler produces the better code with both the "throw()" and the no side effect pragma.

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  • Inline template efficiency

    - by Darryl Gove
    I like inline templates, and use them quite extensively. Whenever I write code with them I'm always careful to check the disassembly to see that the resulting output is efficient. Here's a potential cause of inefficiency. Suppose we want to use the mis-named Leading Zero Detect (LZD) instruction on T4 (this instruction does a count of the number of leading zero bits in an integer register - so it should really be called leading zero count). So we put together an inline template called lzd.il looking like: .inline lzd lzd %o0,%o0 .end And we throw together some code that uses it: int lzd(int); int a; int c=0; int main() { for(a=0; a<1000; a++) { c=lzd(c); } return 0; } We compile the code with some amount of optimisation, and look at the resulting code: $ cc -O -xtarget=T4 -S lzd.c lzd.il $ more lzd.s .L77000018: /* 0x001c 11 */ lzd %o0,%o0 /* 0x0020 9 */ ld [%i1],%i3 /* 0x0024 11 */ st %o0,[%i2] /* 0x0028 9 */ add %i3,1,%i0 /* 0x002c */ cmp %i0,999 /* 0x0030 */ ble,pt %icc,.L77000018 /* 0x0034 */ st %i0,[%i1] What is surprising is that we're seeing a number of loads and stores in the code. Everything could be held in registers, so why is this happening? The problem is that the code is only inlined at the code generation stage - when the actual instructions are generated. Earlier compiler phases see a function call. The called functions can do all kinds of nastiness to global variables (like 'a' in this code) so we need to load them from memory after the function call, and store them to memory before the function call. Fortunately we can use a #pragma directive to tell the compiler that the routine lzd() has no side effects - meaning that it does not read or write to memory. The directive to do that is #pragma no_side_effect(<routine name), and it needs to be placed after the declaration of the function. The new code looks like: int lzd(int); #pragma no_side_effect(lzd) int a; int c=0; int main() { for(a=0; a<1000; a++) { c=lzd(c); } return 0; } Now the loop looks much neater: /* 0x0014 10 */ add %i1,1,%i1 ! 11 ! { ! 12 ! c=lzd(c); /* 0x0018 12 */ lzd %o0,%o0 /* 0x001c 10 */ cmp %i1,999 /* 0x0020 */ ble,pt %icc,.L77000018 /* 0x0024 */ nop

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  • Customers Go On Record About Oracle ERP and HCM Cloud Services

    - by Kathryn Perry
    Listen to these Oracle customers from Red Robin, Herbalife, LendingClub, and Cricket.talk about how they're using Oracle ERP and HCM Cloud Services. Collectively they're driving cost savings, managing global, fast paced growth, automating processes, implementing quickly in the cloud, and much more. Here's the video link: http://www.youtube.com/user/FusionAppsAtOracle

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  • Oracle UK Technology "Tech Fest"

    - by rituchhibber
    ** As a priority partner, we are sending you advance notice of these exclusive “Technology Test Fest” free examination sessions. Please note that this communication will be sent out to the wider community one week from today, so please register immediately to secure your place! ** We are delighted to offer you the exclusive opportunity to register and attend the Oracle UK “Technology Test Fest” being held as Part of the UKOUG Conference at the ICC in Birmingham in the Drawing Room at the Hyatt Regency hotel adjacent to the ICC venue, from 3rd to 5th December  2012. This is your opportunity to sit your chosen Oracle Technology Specialist Implementation Exam free of charge on this day. Four sessions are being run (10.00AM and 14.00PM), with just 15 places at each session – so register now to avoid disappointment! (Exams take about 1.5 hours to complete.) Which Implementation Specialist Exams are available to take? Click here to see the list of exams available for you to sit for free at the Oracle UKOUG “Technology Test Fest”. The links also include the study guide for the particular exam. Please review the Specialization Guide as well. How do I register for the Oracle UK “Technology Test Fest”? Fill out the Pearson Vue profile here and complete it with your OPN Company ID. NB: Instructions on how to create/update the profile can be found here. Register for one of the 4 sessions using the registration links at the top of this page. 03rd December, 2012 at 14:00 04th December, 2012 at 10:00 am (Morning Session) 04th December, 2012 at 14:00 (Afternoon Session) 05th December, 2012 at 10:00 am (Morning Session) VENUE DETAILS: The Drawing Room Hyatt Regency Hotel Birmingham, 2 Bridge Street Birmingham, BI 2JZ 3 - 5 December 2012 You will need to bring your own laptop with 'Windows OS' and a form of identification to be able to take any of the exams. Need Help or Advice? For more information about the tests and Get Specialized programme, please contact: Ishacq Nada. For issues with your profile or any other OPN-related problems, please contact our: Oracle Partner Business Centre or call 08705 194 194. We look forward to welcoming you to the Oracle UK “Technology Test Fest” on the 3rd- 5thDecember 2012! Book early to avoid disappointment.

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  • SharePoint 2010 release date - is it that important?

    - by CharlesLee
    There has been lots of excitement in the SharePoint community over the last few days as Microsoft have announced the official release date of SharePoint 2010. May 12th is the date for your diaries (RTM in April.) The twittersphere has been telling everyone for the last few days about this news and there is much excitement. The major conferences this year all seem to have a SharePoint 2010 focus and some are entirely focussed on the new product (e.g. SharePoint Evolution Conference.)  Now by all accounts Microsoft have plugged some significant functionality gaps that exist in WSS 3.0 and MOSS 2007 and provided some exciting new functionality.  You don't need me to tell you about these as the MVPs (and other community members) are doing a sterling job, after all that is why Microsoft has MVPs in the first place. Lets get real for a second though as there is a significant investment involved in moving to SharePoint 2010:  Firstly you need 64 bit architecture across the board, now for some environments that is no inconsequential hurdle, that's a pretty significant roadblock.   The development farm, test farm and UAT farm are all going to require the same infrastructure upgrades. To take advantage of the tooling for SP2010 you will need to upgrade to Visual Studio 2010 and your development team is going to require 64 bit hardware/OS too.  I would not recommend installing SP 2010 in client installation mode (i.e. for Windows 7) on your developer machines, I would use this for demo machines only. Something that lots of people seem to forget in all their whooping and hollering about the new release is that there is a large amount of end user training going to be required as the browser UI has now adopted the omnipotent ribbon interface and there are other new and more complicated features. SharePoint Designer has also entirely changed in both look and feel and some significant feature changes have taken place. Lest we should forget that some companies have not long upgraded to MOSS 2007 and are yet to see a significant ROI for that project. And the reticence that most companies feel about implementing v1 Microsoft products.  This is only the surface of the deeper issues which would be involved in any upgrade process, so I guess I share a small part of the concern voiced by Mark Miller of EndUserSharePoint.com.  Is SharePoint 2010 relevant? I don't share this sentiment in its entirety as I firmly believe that all companies should be looking at SharePoint 2010 from day one, however most large scale existing implementations of MOSS 2007 are going to be several years away from a serious upgrade project.  So should the conference organisers and the SharePoint community as a whole be a little more understanding of the real world issues?  It's easy to get carried away in the excitement of a new product and new tools to play with but there needs to be a focus on the real world issues that most people are facing day to day and at the moment and for the short term future (at the very least the next 12 months) that is fairly and squarely in the WSS 2.0/3.0 and SPS 2003/MOSS 2007 camps. Don't get me wrong, I am very very excited about getting to grips with SharePoint 2010 in the real world and I cannot wait for my first real project to come along, but for now I am just being realistic about the reality for most people who work with SharePoint. I have been spending a lot of time on www.sharepointoverflow.com recently as there is a community of people building up who are committed to answering the real world questions that folks are dealing with every day.  I urge you to take a look and either ask or answer some questions direct from the front line of the SharePoint world.

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  • 24 hours to pass until 24 Hours of PASS

    - by Rob Farley
    There’s a bunch of stuff going on at the moment in the SQL world, so if you’ve missed this particular piece of news, let me tell you a bit about it. Twice a year, the SQL community puts on its biggest virtual event – 24 Hours of PASS. And the next one is tomorrow – March 21st, 2012. Twenty-four sessions, back-to-back, featuring a selection of some of the best presenters in the SQL world, speakers from all over the world, coming together in an online collaboration that so far has well over thirty thousand registrations across the presentations. Some people are signed up for all 24 sessions, some only one. Traditionally, LiveMeeting has been used as the platform for this event, but this year we’re going with a new platform – IBTalk. It promises big, and we’re hoping it won’t let us down. LiveMeeting has been great, and we thank Microsoft for providing it as a platform for the past few years. However, as the event has grown, we’ve found that a new idea is necessary. Last year a search was done for a new platform, and IBTalk ticked the right boxes. The feedback from the presenters and moderators so far has been overwhelmingly positive, and we’re hoping that this is going to really enhance the user experience. One of my favourite features of the platform is the language side. It provides a pretty good translation service. Users who join a session will see a flag on the left of the screen. If they click it, they can change the language to one of 15 on offer. Picking this changes all the labels on everything. It even translates the text in the Q&A window. What this means is that someone from Brazil can ask their question in Portuguese, and the presenter will see it in English. Then if the answer is typed in English, the questioner will be able to see the answer, also in Portuguese. Or they can switch to English to see it as the answerer typed it. I know there’s always the risk of bad translations going on, but I’ve heard good things about this translation service. But there’s more – IBTalk are providing staff to type up closed captioning live during the event. So if English isn’t your first language, don’t worry! Picking your language will also let you see subtitles in your chosen language. I’m hoping that this event is the start of PASS being able to reach people from all corners of the world. Wouldn’t it be great to find that this event is successful, and that the next 24HOP (later in the year, our Summit Preview event) has just as many non-English speakers tuning in as English speakers? If you haven’t been planning which sessions you’re going to attend, you really should get over to sqlpass.org/24hours and have a look through what’s on offer. There’s some amazing material from some of the industry’s brightest, covering a wide range of topics, from classic SQL areas to the brand new SQL 2012 features. There really should be something for every SQL professional. Check the time zones though – if you’re in the US you might be on Summer time, and an hour closer to GMT than normal. Massive thanks must go to Microsoft, SQL Sentry and Idera for sponsoring this event. Without sponsors we wouldn’t be able to put any of this on. These companies are helping 24HOP continue to grow into an event for the whole world. See you tomorrow! @rob_farley | #24hop | #sqlpass

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  • 24 hours to pass until 24 Hours of PASS

    - by Rob Farley
    There’s a bunch of stuff going on at the moment in the SQL world, so if you’ve missed this particular piece of news, let me tell you a bit about it. Twice a year, the SQL community puts on its biggest virtual event – 24 Hours of PASS. And the next one is tomorrow – March 21st, 2012. Twenty-four sessions, back-to-back, featuring a selection of some of the best presenters in the SQL world, speakers from all over the world, coming together in an online collaboration that so far has well over thirty thousand registrations across the presentations. Some people are signed up for all 24 sessions, some only one. Traditionally, LiveMeeting has been used as the platform for this event, but this year we’re going with a new platform – IBTalk. It promises big, and we’re hoping it won’t let us down. LiveMeeting has been great, and we thank Microsoft for providing it as a platform for the past few years. However, as the event has grown, we’ve found that a new idea is necessary. Last year a search was done for a new platform, and IBTalk ticked the right boxes. The feedback from the presenters and moderators so far has been overwhelmingly positive, and we’re hoping that this is going to really enhance the user experience. One of my favourite features of the platform is the language side. It provides a pretty good translation service. Users who join a session will see a flag on the left of the screen. If they click it, they can change the language to one of 15 on offer. Picking this changes all the labels on everything. It even translates the text in the Q&A window. What this means is that someone from Brazil can ask their question in Portuguese, and the presenter will see it in English. Then if the answer is typed in English, the questioner will be able to see the answer, also in Portuguese. Or they can switch to English to see it as the answerer typed it. I know there’s always the risk of bad translations going on, but I’ve heard good things about this translation service. But there’s more – IBTalk are providing staff to type up closed captioning live during the event. So if English isn’t your first language, don’t worry! Picking your language will also let you see subtitles in your chosen language. I’m hoping that this event is the start of PASS being able to reach people from all corners of the world. Wouldn’t it be great to find that this event is successful, and that the next 24HOP (later in the year, our Summit Preview event) has just as many non-English speakers tuning in as English speakers? If you haven’t been planning which sessions you’re going to attend, you really should get over to sqlpass.org/24hours and have a look through what’s on offer. There’s some amazing material from some of the industry’s brightest, covering a wide range of topics, from classic SQL areas to the brand new SQL 2012 features. There really should be something for every SQL professional. Check the time zones though – if you’re in the US you might be on Summer time, and an hour closer to GMT than normal. Massive thanks must go to Microsoft, SQL Sentry and Idera for sponsoring this event. Without sponsors we wouldn’t be able to put any of this on. These companies are helping 24HOP continue to grow into an event for the whole world. See you tomorrow! @rob_farley | #24hop | #sqlpass

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  • Welcome to the Oracle Retail International Blog

    - by sarah.taylor(at)oracle.com
    Welcome to the first post of the new Oracle Retail International Blog. Retail is an international business and today's successful retailers view themselves in the context of a global market. A niche fashion business in Tokyo will learn marketing strategies from the luxury brands of Milan, an independent grocer in Oslo will source the same global brands as a supermarket in Oklahoma, and every retailer in the world will measure their multi-channel operation against the international e-commerce giant Amazon.  Why? Because today's customer is a global customer with unparalleled expectations on choice, price and service. Today's consumers have access to more information on retail than ever before. Technology allows people to shop from their home, their office or from the phone in their pocket, wherever they are and at whatever time suits them. Customers are using the web to search for products and promotions. They are also using the web to develop their voice in commenting on products and services that have delighted or disappointed. In an information rich industry, this customer element creates a new world of data. The best retailers are developing eagle eyes for reading customer activity and turning it into profitable decisions. Ultimately, whether you choose to compete or shop on price, service, product innovation, excellent operations or all of the above - the international world of retail has become an inspiration for all - retailer and consumer alike.  Retail as an industry is growing and diversifying at a faster rate than ever before. Yet it is still the customer who picks the winners and the losers on the retail field. Economic circumstances transform the rules, but it is still the customer who dictates the game, the pace, the price, and the perception of the brand. Wise retailers never rest on their laurels. They are always shopping for ideas on how to improve and differentiate the offer at every touch point to meet the customer's needs better than anyone else and to gain each customer's loyalty at a time when loyalty can be cheap. With this blog, I hope that we might provide a hub for discussion around what unifies retail and how technology supports both the retailer and customer experience. Despite the competitive nature of this market, we hope that this will provide an opportunity to share experiences and lessons learnt with a view that knowledge can only help this industry to grow and develop. At Oracle we've been supporting retailers for many years. Many of us have worked within retail organisations all over the world, myself included. With this in mind, I don't feel it is too bold a statement to say that Oracle understands retail. We wouldn't be so heavily integrated in some of the biggest and most well-known names in retail if we didn't. With this blog, we intend to create a community of international retailers that can exchange ideas and experiences, debate collective challenges and drive a better understanding of this continually evolving industry. Events such as the World Retail Congress and NRF's Big Show bring enormous value to the retail industry providing platforms for discussion and learning but they happen once a year. We wanted to create a platform for discussion on a different level and that like retail, is always on. We hope not only to bring commitment to being not only the infrastructure that brings all of their systems together within a retail business, but an infrastructure that supports the industry internationally to grow and flourish through creating a platform for networking, discussion, creativity, vision and strategy. Please feel free to ask questions or comment using the comments functionality.  You might also want to visit our other Oracle Retail social media sites: Facebook - http://www.facebook.com/oracleretail YouTube - http://www.youtube.com/user/oracleretail Twitter - http://twitter.com/#!/oracleretailInsight-Driven Retailing Blog - http://blogs.oracle.com/retail/

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  • Dark Sun Dispatch 001

    - by Chris Williams
    If you aren't into tabletop (aka pen & paper) RPGs, you might as well click to the next post now... Still here? Awesome. I've recently started running a new D&D 4.0 Dark Sun campaign. If you don't know anything about Dark Sun, here's a quick intro: The campaign take place on the world of Athas, formerly a lush green world that is now a desert wasteland. Forests are rare in the extreme, as is water and metal. Coins are made of ceramic and weapons are often made of hardened wood, bone or obsidian. The green age of Athas was centuries ago and the current state was brought about through the reckless use of sorcerous magic. (In this world, you can augment spells by drawing on the life force of the world & people around you. This is called defiling. Preserving magic draws upon the casters life force and does not damage the surrounding world, but it isn't as powerful.) Humans are pretty much unchanged, but the traditional fantasy races have changed quite a bit. Elves don't live in the forest, they are shifty and untrustworthy desert traders known for their ability to run long distances through the wastes. Halflings are not short, fat, pleasant little riverside people. Instead they are bloodthirsty feral cannibals that roam the few remaining forests and ride reptilians beasts akin to raptors. Gnomes are extinct, as are orcs. Dwarves are mostly farmers and gladiators, and live out in the sun instead of staying under the mountains. Goliaths are half-giants, not known for their intellect. Muls are a Dwarf & Human crossbreed that displays the best traits of both races (human height and dwarven stoutness.) Thri-Kreen are sentient mantis people that are extremely fast. Most of the same character classes are available, with a few new twists. There are no divine characters (such as Priests, Paladins, etc) because the gods are gone. Nobody alive today can remember a time when they were still around. Instead, some folks worship the elemental forces (although they don't give out spells.) The cities are all ruled by Sorcerer King tyrants (except one city: Tyr) who are hundreds of years old and still practice defiling magic whenever they please. Serving the Sorcerer Kings are the Templars, who are also defilers and psionicists. Crossing them is as bad, in many cases, as crossing the Kings themselves. Between the cities you have small towns and trading outposts, and mostly barren desert with sometimes 4-5 days on foot between towns and the nearest oasis. Being caught out in the desert without adequate supplies and protection from the elements is pretty much a death sentence for even the toughest heroes. When you add in the natural (and unnatural) predators that roam the wastes, often in packs, most people don't last long alone. In this campaign, the adventure begins in the (small) trading fortress of Altaruk, a couple weeks walking distance from the newly freed city of Tyr. A caravan carrying trade goods from Altaruk has not made it to Tyr and the local merchant house has dispatched the heroes to find out what happened and to retrieve the goods (and drivers) if possible. The unlikely heroes consist of a human shaman, a thri-kreen monk, a human wizard, a kenku assassin and a (void aspect) genasi swordmage. Gathering up supplies and a little liquid courage, they set out into the desert and manage to find the northbound tracks of the wagon. Shortly after finding the tracks, they are ambushed by a pack of silt-runners (small lizard people with very large teeth and poisoned pointy spears.) The party makes short work of the creatures, taking a few minor wounds in the process. Proceeding onward without resting, they find the remains of the wagon and manage to sneak up on a pack of Kruthiks picking through the rubble and spilled goods. Unfortunately, they failed to take advantage of the opportunity and had a hard fight ahead of them. The party defeated the kruthiks, but took heavy damage (and almost lost a couple of their own) in the process. Once the kruthiks were dispatched, they followed a set of tracks further north to a ruined tower...

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  • Converting openGl code to DirectX

    - by Fredrik Boston Westman
    First of all, this is kind of a follow up question on @byte56 excellent anwser on this question concerning picking algorithms. I'm trying to convert one of his code examples to directX 11 however I have run in to some problems ( I can pick but the picking is way off), and I wanted to make sure I had done it rigth before moving on and checking the rest of my code. I am not that familiar with openGl but I can imagine openGl has diffrent coordinations systems, and functions that alters how you must implement to code abit. This is his code example: public Ray GetPickRay() { int mouseX = Mouse.getX(); int mouseY = WORLD.Byte56Game.getHeight() - Mouse.getY(); float windowWidth = WORLD.Byte56Game.getWidth(); float windowHeight = WORLD.Byte56Game.getHeight(); //get the mouse position in screenSpace coords double screenSpaceX = ((float) mouseX / (windowWidth / 2) - 1.0f) * aspectRatio; double screenSpaceY = (1.0f - (float) mouseY / (windowHeight / 2)); double viewRatio = Math.tan(((float) Math.PI / (180.f/ViewAngle) / 2.00f))* zoomFactor; screenSpaceX = screenSpaceX * viewRatio; screenSpaceY = screenSpaceY * viewRatio; //Find the far and near camera spaces Vector4f cameraSpaceNear = new Vector4f((float) (screenSpaceX * NearPlane), (float) (screenSpaceY * NearPlane), (float) (-NearPlane), 1); Vector4f cameraSpaceFar = new Vector4f((float) (screenSpaceX * FarPlane), (float) (screenSpaceY * FarPlane), (float) (-FarPlane), 1); //Unproject the 2D window into 3D to see where in 3D we're actually clicking Matrix4f tmpView = Matrix4f(view); Matrix4f invView = (Matrix4f) tmpView.invert(); Vector4f worldSpaceNear = new Vector4f(); Matrix4f.transform(invView, cameraSpaceNear, worldSpaceNear); Vector4f worldSpaceFar = new Vector4f(); Matrix4f.transform(invView, cameraSpaceFar, worldSpaceFar); //calculate the ray position and direction Vector3f rayPosition = new Vector3f(worldSpaceNear.x, worldSpaceNear.y, worldSpaceNear.z); Vector3f rayDirection = new Vector3f(worldSpaceFar.x - worldSpaceNear.x, worldSpaceFar.y - worldSpaceNear.y, worldSpaceFar.z - worldSpaceNear.z); rayDirection.normalise(); return new Ray(rayPosition, rayDirection); } All rigths reserved to him of course This is my DirectX 11 code : void GraphicEngine::pickRayVector(float mouseX, float mouseY,XMVECTOR& pickRayInWorldSpacePos, XMVECTOR& pickRayInWorldSpaceDir) { float PRVecX, PRVecY; float nearPlane = 0.1f; float farPlane = 200.0f; floar viewAngle = 0.4 * 3.14; PRVecX = ((( 2.0f * mouseX) / ClientWidth ) - 1 ) * tan((viewAngle)/2); PRVecY = (1-(( 2.0f * mouseY) / ClientHeight)) * tan((viewAngle)/2); XMVECTOR cameraSpaceNear = XMVectorSet(PRVecX * nearPlane,PRVecY * nearPlane, -nearPlane, 1.0f); XMVECTOR cameraSpaceFar = XMVectorSet(PRVecX * farPlane,PRVecY * farPlane, -farPlane, 1.0f); // Transform 3D Ray from View space to 3D ray in World space XMMATRIX invMat; XMVECTOR matInvDeter; invMat = XMMatrixInverse(&matInvDeter, cam->getCameraView()); //Inverse of View Space matrix is World space matrix XMVECTOR worldSpaceNear = XMVector3TransformCoord(cameraSpaceNear, invMat); XMVECTOR worldSpaceFar = XMVector3TransformCoord(cameraSpaceFar, invMat); pickRayInWorldSpacePos = worldSpaceNear; pickRayInWorldSpaceDir = worldSpaceFar-worldSpaceNear; pickRayInWorldSpaceDir = XMVector3Normalize(pickRayInWorldSpaceDir); } A couple of notes: The mouse coordinates are already converted so that the top left corner of the client window would be (0,0) and the bottom rigth (800,600) ( or whatever resolution you would have) I hadn't used any far or near plane before, so i just made some arbitrary number up for them. To my understanding it shouldnt matter as long as the object you are trying to pick is in between the range of thoese numbers The viewAngle is the same angle that I used when setting the camera view with XMMatrixPerspectiveFovLH , I just hadn't made it a member variable of my Camera class yet. I removed the variable aspectRation and zoomFactor because I assumed that they where related to some specific function of his game. Now I'm not sure, but I think the problems lies either withing the mouse to viewspace conversion, maby that we use diffrent coordinations systems. Either that or how i transform the matrixes in the the end, because i know order is important when it comes to matrixes. Any help is appriciated! Thanks in advance. Edit: One more note, my code is in c++

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  • WebCenter Customer Spotlight: Hyundai Motor Company

    - by me
    Author: Peter Reiser - Social Business Evangelist, Oracle WebCenter  Solution SummaryHyundai Motor Company is one of the world’s fastest-growing car manufacturers, ranked as the fifth-largest in 2011. The company also operates the world’s largest integrated automobile manufacturing facility in Ulsan, Republic of Korea, which can produce 1.6 million units per year. They  undertook a project to improve business efficiency and reinforce data security by centralizing the company’s sales, financial, and car manufacturing documents into a single repository. Hyundai Motor Company chose Oracle Exalogic, Oracle Exadata, Oracle WebLogic Sever, and Oracle WebCenter Content 11g, as they provided better performance, stability, storage, and scalability than their competitors.  Hyundai Motor Company cut the overall time spent each day on document-related work by around 85%, saved more than US$1 million in paper and printing costs, laid the foundation for a smart work environment, and supported their future growth in the competitive car industry. Company OverviewHyundai Motor Company is one of the world’s fastest-growing car manufacturers, ranked as the fifth-largest in 2011. The company also operates the world’s largest integrated automobile manufacturing facility in Ulsan, Republic of Korea, which can produce 1.6 million units per year. The company strives to enhance its brand image and market recognition by continuously improving the quality and design of its cars. Business Challenges To maximize the company’s growth potential, Hyundai Motor Company undertook a project to improve business efficiency and reinforce data security by centralizing the company’s sales, financial, and car manufacturing documents into a single repository. Specifically, they wanted to: Introduce a smart work environment to improve staff productivity and efficiency, and take advantage of rapid company growth due to new, enhanced car designs Replace a legacy document system managed by individual staff to improve collaboration, the visibility of corporate documents, and sharing of work-related files between employees Improve the security and storage of documents containing corporate intellectual property, and prevent intellectual property loss when staff leaves the company Eliminate delays when downloading files from the central server to a PC Build a large, single document repository to more efficiently manage and share data between 30,000 staff at the company’s headquarters Establish a scalable system that can be extended to Hyundai offices around the world Solution DeployedAfter conducting a large-scale benchmark test, Hyundai Motor Company chose Oracle Exalogic, Oracle Exadata, Oracle WebLogic Sever, and Oracle WebCenter Content 11g, as they provided better performance, stability, storage, and scalability than their competitors. Business Results Lowered the overall time spent each day on all document-related work by approximately 85%—from 4.5 hours to around 42 minutes on an average day Saved more than US$1 million per year in printer, paper, and toner costs, and laid the foundation for a completely paperless environment Reduced staff’s time spent requesting and receiving documents about car sales or designs from supervisors by 50%, by storing and managing all documents across the corporation in a single repository Cut the time required to draft new-car manufacturing, sales, and design documents by 20%, by allowing employees to reference high-quality data, such as marketing strategy and product planning documents already in the system Enhanced staff productivity at company headquarters by 9% by reducing the document-related tasks of 30,000 administrative and research and development staff Ensured the system could scale to hold 3 petabytes of car sales, manufacturing, and design data by 2013 and be deployed at branches worldwide We chose Oracle Exalogic, Oracle Exadata, and Oracle WebCenter Content to support our new document-centralization system over their competitors as Oracle offers stable storage for petabytes of data and high processing speeds. We have cut the overall time spent each day on document-related work by around 85%, saved more than US$1 million in paper and printing costs, laid the foundation for a smart work environment, and supported our future growth in the competitive car industry. Kang Tae-jin, Manager, General Affairs Team, Hyundai Motor Company Additional Information Hyundai Motor Company Customer Snapshot Oracle WebCenter Content

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  • HLSL 5 interpolation issues

    - by metredigm
    I'm having issues with the depth components of my shadowmapping shaders. The shadow map rendering shader is fine, and works very well. The world rendering shader is more problematic. The only value which seems to definitely be off is the pixel's position from the light's perspective, which I pass in parallel to the position. struct Pixel { float4 position : SV_Position; float4 light_pos : TEXCOORD2; float3 normal : NORMAL; float2 texcoord : TEXCOORD; }; The reason that I used the semantic 'TEXCOORD2' on the light's pixel position is because I believe that the problem lies with Direct3D's interpolation of values between shaders, and I started trying random semantics and also forcing linear and noperspective interpolations. In the world rendering shader, I observed in the pixel shader that the Z value of light_pos was always extremely close to, but less than the W value. This resulted in a depth result of 0.999 or similar for every pixel. Here is the vertex shader code : struct Vertex { float3 position : POSITION; float3 normal : NORMAL; float2 texcoord : TEXCOORD; }; struct Pixel { float4 position : SV_Position; float4 light_pos : TEXCOORD2; float3 normal : NORMAL; float2 texcoord : TEXCOORD; }; cbuffer Camera : register (b0) { matrix world; matrix view; matrix projection; }; cbuffer Light : register (b1) { matrix light_world; matrix light_view; matrix light_projection; }; Pixel RenderVertexShader(Vertex input) { Pixel output; output.position = mul(float4(input.position, 1.0f), world); output.position = mul(output.position, view); output.position = mul(output.position, projection); output.world_pos = mul(float4(input.position, 1.0f), world); output.world_pos = mul(output.world_pos, light_view); output.world_pos = mul(output.world_pos, light_projection); output.texcoord = input.texcoord; output.normal = input.normal; return output; } I suspect interpolation to be the culprit, as I used the camera matrices in place of the light matrices in the vertex shader, and had the same problem. The problem is evident as both of the same vectors were passed to a pixel from the VS, but only one of them showed a change in the PS. I have already thoroughly debugged the matrices' validity, the cbuffers' validity, and the multiplicative validity. I'm very stumped and have been trying to solve this for quite some time. Misc info : The light projection matrix and the camera projection matrix are the same, generated from D3DXMatrixPerspectiveFovLH(), with an FOV of 60.0f * 3.141f / 180.0f, a near clipping plane of 0.1f, and a far clipping plane of 1000.0f. Any ideas on what is happening? (This is a repost from my question on Stack Overflow)

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  • Direct3D - Zooming into Mouse Position

    - by roohan
    I'm trying to implement my camera class for a simulation. But I cant figure out how to zoom into my world based on the mouse position. I mean the object under the mouse cursor should remain at the same screen position. My zooming looks like this: VOID ZoomIn(D3DXMATRIX& WorldMatrix, FLOAT const& MouseX, FLOAT const& MouseY) { this->Position.z = this->Position.z * 0.9f; D3DXMatrixLookAtLH(&this->ViewMatrix, &this->Position, &this->Target, &this->UpDirection); } I passed the world matrix to the function because I had the idea to move my drawing origin according to the mouse position. But I cant find out how to calculate the offset in to move my drawing origin. Anyone got an idea how to calculate this? Thanks in advance. SOLVED Ok I solved my problem. Here is the code if anyone is interested: VOID CAMERA2D::ZoomIn(FLOAT const& MouseX, FLOAT const& MouseY) { // Get the setting of the current view port. D3DVIEWPORT9 ViewPort; this->Direct3DDevice->GetViewport(&ViewPort); // Convert the screen coordinates of the mouse to world space coordinates. D3DXVECTOR3 VectorOne; D3DXVECTOR3 VectorTwo; D3DXVec3Unproject(&VectorOne, &D3DXVECTOR3(MouseX, MouseY, 0.0f), &ViewPort, &this->ProjectionMatrix, &this->ViewMatrix, &WorldMatrix); D3DXVec3Unproject(&VectorTwo, &D3DXVECTOR3(MouseX, MouseY, 1.0f), &ViewPort, &this->ProjectionMatrix, &this->ViewMatrix, &WorldMatrix); // Calculate the resulting vector components. float WorldZ = 0.0f; float WorldX = ((WorldZ - VectorOne.z) * (VectorTwo.x - VectorOne.x)) / (VectorTwo.z - VectorOne.z) + VectorOne.x; float WorldY = ((WorldZ - VectorOne.z) * (VectorTwo.y - VectorOne.y)) / (VectorTwo.z - VectorOne.z) + VectorOne.y; // Move the camera into the screen. this->Position.z = this->Position.z * 0.9f; D3DXMatrixLookAtLH(&this->ViewMatrix, &this->Position, &this->Target, &this->UpDirection); // Calculate the world space vector again based on the new view matrix, D3DXVec3Unproject(&VectorOne, &D3DXVECTOR3(MouseX, MouseY, 0.0f), &ViewPort, &this->ProjectionMatrix, &this->ViewMatrix, &WorldMatrix); D3DXVec3Unproject(&VectorTwo, &D3DXVECTOR3(MouseX, MouseY, 1.0f), &ViewPort, &this->ProjectionMatrix, &this->ViewMatrix, &WorldMatrix); // Calculate the resulting vector components. float WorldZ2 = 0.0f; float WorldX2 = ((WorldZ2 - VectorOne.z) * (VectorTwo.x - VectorOne.x)) / (VectorTwo.z - VectorOne.z) + VectorOne.x; float WorldY2 = ((WorldZ2 - VectorOne.z) * (VectorTwo.y - VectorOne.y)) / (VectorTwo.z - VectorOne.z) + VectorOne.y; // Create a temporary translation matrix for calculating the origin offset. D3DXMATRIX TranslationMatrix; D3DXMatrixIdentity(&TranslationMatrix); // Calculate the origin offset. D3DXMatrixTranslation(&TranslationMatrix, WorldX2 - WorldX, WorldY2 - WorldY, 0.0f); // At the offset to the cameras world matrix. this->WorldMatrix = this->WorldMatrix * TranslationMatrix; } Maybe someone has even a better solution than mine.

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  • shift reduce&& reduce reduce errors in build parser for python garmmer

    - by user366580
    i wanna build buttom up parser by java cup i write code in java cup , it is for python language so i used grammer was written in this site : but not all grammer , i choice partial set ,just while , identifer also i smiplified them when i did compile for the java cup that i write by write this command in command prompt window : java java_cup.Main -parser CalcParser -symbols CalcSymbol < javacupfile.cup i get conflict errors ,they are of type reduce-shift conflict and reduce-reduce conflict you can see to print screen of the errors in these links image 1 click here to see imge1 the grammer was in EBNF form in as refernce site and i convert it to BNF form maybe i make mistake in converting so i get such errors the origanl grammmer was // grammer in EBNF form identifier ::= (letter|"_") (letter | digit | "_")* letter ::= lowercase | uppercase lowercase ::= "a"..."z" uppercase ::= "A"..."Z" digit ::= "0"..."9 compound_stmt ::= if_stmt | while_stmt for_stmt ::= "for" target_list "in" expression_list ":" suite ["else" ":" suite] while_stmt ::= "while" expression ":" suite ["else" ":" suite] suite ::= stmt_list NEWLINE stmt_list ::= simple_stmt (";" simple_stmt)* [";"] simple_stmt ::= expression_stmt expression_stmt ::= expression_list expression_list ::= expression ( "," expression )* [","] expression ::= conditional_expression conditional_expression ::= or_test ["if" or_test "else" expression] or_test ::= and_test | or_test "or" and_test and_test ::= not_test | and_test "and" not_test not_test ::= comparison | "not" not_test comparison ::= or_expr ( comp_operator or_expr )* comp_operator ::= "<" | ">" | "==" | ">=" | "<=" | "<>" | "!=" | "is" ["not"] | ["not"] "in" or_expr ::= xor_expr | or_expr "|" xor_expr xor_expr ::= and_expr | xor_expr "^" and_expr and_expr ::= "&" | and_expr the grammer after converting to BNF form identifier ::=letterletter| letterdigit| letter"_"| "_"letter | "_"digit | "_""_" letter ::= lowercase | uppercase lowercase ::= "a"..."z" uppercase ::= "A"..."Z" digit ::= "0"..."9 while_stmt ::= "while" expression ":" suite "else" ":" suite |"while" expression ":" suite suite ::= stmt_list NEWLINE stmt_list ::= simple_stmt ";" simple_stmt stmt_list|";" simple_stmt ::= expression_stmt expression_stmt ::= expression_list expression_list ::= expression "," expression expression_list| "," expression ::= conditional_expression conditional_expression ::= or_test "if" or_test "else" expression |or_test or_test ::= and_test | or_test "or" and_test and_test ::= not_test | and_test "and" not_test not_test ::= comparison | "not" not_test comparison ::= or_expr comp_operator or_expr comp_operator ::= "<" | ">" | "==" | ">=" | "<=" | "<>" | "!=" | "is" ["not"] | ["not"] "in" or_expr ::= xor_expr | or_expr "|" xor_expr xor_expr ::= and_expr | xor_expr "^" and_expr and_expr ::= "&" | and_expr and the java cup file that i compile and get those errors is import java.io.*; terminal COMA; terminal ELSE; terminal WHILE; terminal NEWLINE; terminal SEMCOLON; terminal CAMMA; terminal IF; terminal OR; terminal AND; terminal NOT; terminal LESS; terminal GREATER; terminal EQUAL; terminal GREATERorE; terminal LESSorE; terminal NEQUAL; terminal OROP; terminal XOROP; terminal ANDOP; terminal Integer DIGIT; terminal java.lang.String LOWERCASE; terminal java.lang.String UPPERCASE; non terminal java.lang.String IDENTIFIER; non terminal java.lang.String LETTER; non terminal COMPOUND_STMT; non terminal WHILE_STMT; non terminal EXPRESSION; non terminal SUITE ; non terminal STMT_LIST; non terminal SIMPLE_STMT; non terminal EXPRESSION_STMT; non terminal EXPRESSION_LIST; non terminal CONDITITONAL_EXPRESSION; non terminal OR_TEST; non terminal AND_TEST; non terminal NOT_TEST; non terminal COMPARISON; non terminal COMP_OPERATOR; non terminal OR_EXPR; non terminal XOR_EXPR; non terminal AND_EXPR; IDENTIFIER ::=LETTER{: System.out.printf("lowercase"); :}| {: System.out.printf("uppercase"); :} LETTER{: System.out.printf("lowercase"); :}| {: System.out.printf("uppercase"); :}| LETTER{: System.out.printf("lowercase"); :}| {: System.out.printf("uppercase"); :} DIGIT; LETTER ::= LOWERCASE | UPPERCASE; COMPOUND_STMT ::=WHILE_STMT; WHILE_STMT ::= WHILE{: System.out.printf( "while"); :} EXPRESSION COMA {: System.out.printf(":"); :} SUITE ELSE {: System.out.printf("else" ); :} COMA{: System.out.printf( ":" ); :} SUITE |WHILE{: System.out.printf( "while" ); :} EXPRESSION COMA{: System.out.printf( ":" ); :} SUITE; SUITE ::= STMT_LIST NEWLINE{: System.out.printf( "newline" ); :}; STMT_LIST ::= SIMPLE_STMT SEMCOLON{: System.out.printf( ";" ); :} SIMPLE_STMT STMT_LIST|SEMCOLON{: System.out.printf( ";" ); :}; SIMPLE_STMT ::=EXPRESSION_STMT; EXPRESSION_STMT ::=EXPRESSION_LIST; EXPRESSION_LIST ::= EXPRESSION CAMMA{: System.out.printf( "," ); :} EXPRESSION EXPRESSION_LIST| CAMMA{: System.out.printf( "," ); :}; EXPRESSION ::= CONDITITONAL_EXPRESSION; CONDITITONAL_EXPRESSION ::= OR_TEST IF{: System.out.printf( "if"); :} OR_TEST ELSE{: System.out.printf("else"); :} EXPRESSION |OR_TEST; OR_TEST ::= AND_TEST | OR_TEST OR{: System.out.printf( "or"); :} AND_TEST; AND_TEST ::= NOT_TEST | AND_TEST AND{: System.out.printf( "and"); :} NOT_TEST; NOT_TEST ::= COMPARISON | NOT{: System.out.printf("not"); :} NOT_TEST; COMPARISON ::= OR_EXPR COMP_OPERATOR OR_EXPR ; COMP_OPERATOR ::= LESS{: System.out.printf( "<"); :} | GREATER{: System.out.printf(">"); :} | EQUAL{: System.out.printf("=="); :} | GREATERorE{: System.out.printf(">="); :} | LESSorE{: System.out.printf("<="); :} | NEQUAL{: System.out.printf("!="); :}; OR_EXPR ::= XOR_EXPR | OR_EXPR OROP{: System.out.printf("|"); :} XOR_EXPR; XOR_EXPR ::= AND_EXPR | XOR_EXPR XOROP {: System.out.printf("^"); :}XOR_EXPR; AND_EXPR ::= ANDOP{: System.out.printf("&"); :} | AND_EXPR; can any one told me how can solve this errors to build parser correcrtly??

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  • Simple libxml2 HTML parsing example, using Objective-c, Xcode, and HTMLparser.h

    - by Stu
    Please can somebody show me a simple example of parsing some HTML using libxml. #import <libxml2/libxml/HTMLparser.h> NSString *html = @"<ul><li><input type=\"image\" name=\"input1\" value=\"string1value\" /></li><li><input type=\"image\" name=\"input2\" value=\"string2value\" /></li></ul><span class=\"spantext\"><b>Hello World 1</b></span><span class=\"spantext\"><b>Hello World 2</b></span>"; 1) Say I want to parse the value of the input whose name = input2. Should output "string2value". 2) Say I want to parse the inner contents of each span tag whose class = spantext. Should output: "Hello World 1" and "Hello World 2".

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  • Delphi Speech recognition delphi

    - by XBasic3000
    I need create a programatic equivalent using delphi language... or could someone post a link on how to do grammars in peech recogniton using the delphi. sorry for my english... XML Grammar Sample(s): <GRAMMAR> <!-- Create a simple "hello world" rule --> <RULE NAME="HelloWorld" TOPLEVEL="ACTIVE"> <P>hello world</P> </RULE> <!-- Create a more advanced "hello world" rule that changes the display form. When the user says "hello world" the display text will be "Hiya there!" --> <RULE NAME="HelloWorld_Disp" TOPLEVEL="ACTIVE"> <P DISP="Hiya there!">hello world</P> </RULE> <!-- Create a rule that changes the pronunciation and the display form of the phrase. When the user says "eh" the display text will be "I don't understand?". Note the user didn't say "huh". The pronunciation for "what" is specific to this phrase tag and is not changed for the user or application lexicon, or even other instances of "what" in the grammar --> <RULE NAME="Question_Pron" TOPLEVEL="ACTIVE"> <P DISP="I don't understand" PRON="eh">what</P> </RULE> <!-- Create a rule demonstrating repetition --> <!-- the rule will only be recognized if the user says "hey diddle diddle" --> <RULE NAME="NurseryRhyme" TOPLEVEL="ACTIVE"> <P>hey</P> <P MIN="2" MAX="2">diddle</P> </RULE> <!-- Create a list with variable phrase weights --> <!-- If the user says similar phrases, the recognizer will use the weights to pick a match --> <RULE NAME="UseWeights" TOPLEVEL="ACTIVE"> <LIST> <!-- Note the higher likelihood that the user is expected to say "recognizer speech" --> <P WEIGHT=".95">recognize speech</P> <P WEIGHT=".05">wreck a nice beach</P> </LIST> </RULE> <!-- Create a phrase with an attached semantic property --> <!-- Speaking "one two three" will return three different unique semantic properties, with different names, and different values --> <RULE NAME="UseProps" TOPLEVEL="ACTIVE"> <!-- named property, without value --> <P PROPNAME="NOVALUE">one</P> <!-- named property, with numeric value --> <P PROPNAME="NUMBER" VAL="2">two</P> <!-- named property, with string value --> <P PROPNAME="STRING" VALSTR="three">three</P> </RULE> </GRAMMAR> **Programmatic Equivalent:** To add a phrase to a rule, SAPI provides an API called ISpGrammarBuilder::AddWordTransition. The application developer can add the sentences as follows: SPSTATEHANDLE hsHelloWorld; // Create new top-level rule called "HelloWorld" hr = cpRecoGrammar->GetRule(L"HelloWorld", NULL, SPRAF_TopLevel | SPRAF_Active, TRUE, &hsHelloWorld); // Check hr // Add the command words "hello world" // Note that the lexical delimiter is " ", a space character. // By using a space delimiter, the entire phrase can be added // in one method call hr = cpRecoGrammar->AddWordTransition(hsHelloWorld, NULL, L"hello world", L" ", SPWT_LEXICAL, NULL, NULL); // Check hr // Add the command words "hiya there" // Note that the lexical delimiter is "|", a pipe character. // By using a pipe delimiter, the entire phrase can be added // in one method call hr = cpRecoGrammar->AddWordTransition(hsHelloWorld, NULL, L"hiya|there", L"|", SPWT_LEXICAL, NULL, NULL); // Check hr // save/commit changes hr = cpRecoGrammar->Commit(NULL); // Check hr

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