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  • Are "EXC_BREAKPOINT (SIGTRAP)" exceptions caused by debugging breakpoints?

    - by Dennis
    I have a multithreaded app that is very stable on all my test machines and seems to be stable for almost every one of my users (based on no complaints of crashes). The app crashes frequently for one user, though, who was kind enough to send crash reports. All the crash reports (~10 consecutive reports) look essentially identical: Date/Time: 2010-04-06 11:44:56.106 -0700 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6 Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 com.apple.CoreFoundation 0x90ab98d4 __CFBasicHashRehash + 3348 1 com.apple.CoreFoundation 0x90adf610 CFBasicHashRemoveValue + 1264 2 com.apple.CoreText 0x94e0069c TCFMutableSet::Intersect(__CFSet const*) const + 126 3 com.apple.CoreText 0x94dfe465 TDescriptorSource::CopyMandatoryMatchableRequest(__CFDictionary const*, __CFSet const*) + 115 4 com.apple.CoreText 0x94dfdda6 TDescriptorSource::CopyDescriptorsForRequest(__CFDictionary const*, __CFSet const*, long (*)(void const*, void const*, void*), void*, unsigned long) const + 40 5 com.apple.CoreText 0x94e00377 TDescriptor::CreateMatchingDescriptors(__CFSet const*, unsigned long) const + 135 6 com.apple.AppKit 0x961f5952 __NSFontFactoryWithName + 904 7 com.apple.AppKit 0x961f54f0 +[NSFont fontWithName:size:] + 39 (....more text follows) First, I spent a long time investigating [NSFont fontWithName:size:]. I figured that maybe the user's fonts were screwed up somehow, so that [NSFont fontWithName:size:] was requesting something non-existent and failing for that reason. I added a bunch of code using [[NSFontManager sharedFontManager] availableFontNamesWithTraits:NSItalicFontMask] to check for font availability in advance. Sadly, these changes didn't fix the problem. I've now noticed that I forgot to remove some debugging breakpoints, including _NSLockError, [NSException raise], and objc_exception_throw. However, the app was definitely built using "Release" as the active build configuration. I assume that using the "Release" configuration prevents setting of any breakpoints--but then again I am not sure exactly how breakpoints work or whether the program needs to be run from within gdb for breakpoints to have any effect. My questions are: could my having left the breakpoints set be the cause of the crashes observed by the user? If so, why would the breakpoints cause a problem only for this one user? If not, has anybody else had similar problems with [NSFont fontWithName:size:]? I will probably just try removing the breakpoints and sending back to the user, but I'm not sure how much currency I have left with that user. And I'd like to understand more generally whether leaving the breakpoints set could possibly cause a problem (when the app is built using "Release" configuration).

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  • .NET: Interface Problem VB.net Getter Only Interface

    - by snmcdonald
    Why does an interface override a class definition and violate class encapsulation? I have included two samples below, one in C# and one in VB.net? VB.net Module Module1 Sub Main() Dim testInterface As ITest = New TestMe Console.WriteLine(testInterface.Testable) ''// Prints False testInterface.Testable = True ''// Access to Private!!! Console.WriteLine(testInterface.Testable) ''// Prints True Dim testClass As TestMe = New TestMe Console.WriteLine(testClass.Testable) ''// Prints False ''//testClass.Testable = True ''// Compile Error Console.WriteLine(testClass.Testable) ''// Prints False End Sub End Module Public Class TestMe : Implements ITest Private m_testable As Boolean = False Public Property Testable As Boolean Implements ITest.Testable Get Return m_testable End Get Private Set(ByVal value As Boolean) m_testable = value End Set End Property End Class Interface ITest Property Testable As Boolean End Interface C# using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace InterfaceCSTest { class Program { static void Main(string[] args) { ITest testInterface = new TestMe(); Console.WriteLine(testInterface.Testable); testInterface.Testable = true; Console.WriteLine(testInterface.Testable); TestMe testClass = new TestMe(); Console.WriteLine(testClass.Testable); //testClass.Testable = true; Console.WriteLine(testClass.Testable); } } class TestMe : ITest { private bool m_testable = false; public bool Testable { get { return m_testable; } private set { m_testable = value; } } } interface ITest { bool Testable { get; set; } } } More Specifically How do I implement a interface in VB.net that will allow for a private setter. For example in C# I can declare: class TestMe : ITest { private bool m_testable = false; public bool Testable { get { return m_testable; } private set //No Compile Error here! { m_testable = value; } } } interface ITest { bool Testable { get; } } However, if I declare an interface property as readonly in VB.net I cannot create a setter. If I create a VB.net interface as just a plain old property then interface declarations will violate my encapsulation. Public Class TestMe : Implements ITest Private m_testable As Boolean = False Public ReadOnly Property Testable As Boolean Implements ITest.Testable Get Return m_testable End Get Private Set(ByVal value As Boolean) ''//Compile Error m_testable = value End Set End Property End Class Interface ITest ReadOnly Property Testable As Boolean End Interface So my question is, how do I define a getter only Interface in VB.net with proper encapsulation? I figured the first example would have been the best method. However, it appears as if interface definitions overrule class definitions. So I tried to create a getter only (Readonly) property like in C# but it does not work for VB.net. Maybe this is just a limitation of the language?

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  • for big website's CSS what we should use IE conditional sheets or CSS hacks, in multiple people envi

    - by metal-gear-solid
    for big website's CSS what we should use IE condition sheets ( IE6, IE7, IE8 if needed) or CSS hacks in multiple people environment? and CSS will be handled by multiple people. I'm thinking to use hacks with proper comments because there are chanceh to forgot for other to make any changes in both css. For example : #ab { width:200px} in main css and #ab { width:210px} in IE css. Need your view on this. Thanks in advance.

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  • Utility methods in objective-c

    - by Josh P.
    Where should I place utility methods in objective-c? E.g. additional path handling utility methods which are called by multiple classes. I have seen examples where they are placed in the main appdelegate file and are therefore available to all. This seems a bit weird to me though however...

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  • WHich Implemtation of JSF 1.1 to USe MyFaces or Sun RI

    - by Macvin
    Hi, We want make a choice between SUN RI 1.1 JSF implementaiton and MyFaces . Appserver we will be using is Weblogic 8.1. Could you please rpovide main points for Comparison between the two Which one is better. Can we USe Facelets in SUN RI 1.1_02 . Which is the better choice if want to move the Application to JSF 1.2 and JDK 1.5 in Future. Thanks Mac

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  • how to use an mdf in App_Data with shared hosting

    - by name
    If I create a website that uses an mdf in App_Data with the connection string: Server=.\SQLExpress;AttachDbFilename=|DataDirectory|mydbfile.mdf;Database=dbname; Trusted_Connection=Yes; what do I need to do to run the site in a shared hosting environment? Do I need to copy the contents of my mdf to the main SQL Server engine of my host? Is there a way to use the non-SQLExpress engine of my host and still keep my mdf in my App_Data?

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  • Performance implications of BeginInvoke

    - by AngryHacker
    I've inherited code where BeginInvoke is called from the main thread (not a background thread, which is usually the pattern). I am trying to understand what it actually does in this scenario. Does the method being called in the BeginInvoke get in line of messages that come down to the window? The docs say asynchronously, so that is my assumption. How does the framework prioritize when to kick off the method called by BeginInvoke?

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  • Why do i need PUT or DELETE Http Verbs ?

    - by Barbaros Alp
    After the release of MVC 2, i have started to check and play with the new features. But i couldnt understand that why do i need to use PUT or DELETE verbs ? I have searched about it and read some articles but i couldnt get it. What is the main purpose of DELETE and PUT (and do they have any advantages rather than using a GET or POST method) even though i can handle all of the requests with GET and POST...

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  • professor of Java not knowing Groovy or Scala, normal or abnormal

    - by user311884
    i went to a prestigeous software conference (as dominant in its own field as MS in general), one main speaker is a professor of computer science who has been teaching Java for 20 years. During question session, he seems never heard of Groovy or Scala.... He is from a decent University in US... Is Groovy or Scala too new to attract academic attention or is this professor abnormal? thanks.

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  • FileReader File not Found Java

    - by Lucas Camargo de Carvalho
    I have done everything I know. The file is not a ".filetype.filetype". It is in the same folder as the .settings and the other project files. Why is this not working? Full path isn't working either, but strangely, a Scanner is working. import java.io.FileReader; public class test { public static void main(String[] args) { FileReader testFileReader = new FileReader("hotels.json"); } }

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  • What are the Tags Around Default iPhone Address Book People Phone Number Labels?

    - by rnistuk
    My question concerns markup that surrounds some of the default phone number labels in the Person entries of the Contact list on the iPhone. I have created an iPhone contact list address book entry for a person, "John Smith" with the following phone number entries: Mobile (604) 123-4567 iPhone (778) 123-4567 Home (604) 789-4561 Work (604) 456-7891 Main (604) 789-1234 megaphone (234) 567-8990 Note that the first five labels are default labels provided by the Contacts application and the last label, "megaphone", is a custom label. I wrote the following method to retrieve and display the labels and phone numbers for each person in the address book: -(void)displayPhoneNumbersForAddressBook { ABAddressBookRef book = ABAddressBookCreate(); CFArrayRef people = ABAddressBookCopyArrayOfAllPeople(book); ABRecordRef record = CFArrayGetValueAtIndex(people, 0); ABMultiValueRef multi = ABRecordCopyValue(record, kABPersonPhoneProperty); NSLog(@"---------" ); NSLog(@"displayPhoneNumbersForAddressBook" ); CFStringRef label, phone; for (CFIndex i = 0; i < ABMultiValueGetCount(multi); ++i) { label = ABMultiValueCopyLabelAtIndex(multi, i); phone = ABMultiValueCopyValueAtIndex(multi, i); NSLog(@"label: \"%@\" number: \"%@\"", (NSString*)label, (NSString*)phone); CFRelease(label); CFRelease(phone); } NSLog(@"---------" ); CFRelease(multi); CFRelease(people); CFRelease(book); } and here is the output for the address book entry that I entered: 2010-03-08 13:24:28.789 test2m[2479:207] --------- 2010-03-08 13:24:28.789 test2m[2479:207] displayPhoneNumbersForAddressBook 2010-03-08 13:24:28.790 test2m[2479:207] label: "_$!<Mobile>!$_" number: "(604) 123-4567" 2010-03-08 13:24:28.790 test2m[2479:207] label: "iPhone" number: "(778) 123-4567" 2010-03-08 13:24:28.791 test2m[2479:207] label: "_$!<Home>!$_" number: "(604) 789-4561" 2010-03-08 13:24:28.791 test2m[2479:207] label: "_$!<Work>!$_" number: "(604) 456-7891" 2010-03-08 13:24:28.792 test2m[2479:207] label: "_$!<Main>!$_" number: "(604) 789-1234" 2010-03-08 13:24:28.792 test2m[2479:207] label: "megaphone" number: "(234) 567-8990" 2010-03-08 13:24:28.793 test2m[2479:207] --------- What are the markup characters _$!< and >!$_ surrounding most, save for iPhone, of the default labels for? Can you point me to where in the "Address Book Programming Guide for iPhone OS" I can find the information? Thank you for your help.

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  • What is the difference between JSON and Object Literal Notation?

    - by burak ozdogan
    Hi, Can someone tell me what is the main difference between a Javascript object defined by using "Object Literal Notation" and JSON object? According to a Javascript book it says this is an object defined by using Object Notation: var newObject = { prop1 : true, showMessage : function (msg) {alert(msg)} }; Why it is not a JSON object in this case? Just because it is not defined by using quotation marks? Thanks,

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  • Handling national language prefix for checkconstraints

    - by Chris Chilvers
    I'm trying to create a check constraint such as CHECK Type IN (N'Create', N'Remove') for an enumeration's value. Sqlite complains about this syntax and only accepts CHECK Type IN ('Create', 'Remove'). The main database will be Sql Server 2005, but I use sqlite's in memory database for unit tests. Is there any way to get sqlite to recognise the national language (N) prefix? Alternatively, is there an easy way when using FluentNHibernate to adapt an nvarchar constant to match the database's dialect?

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  • Why Joda DateTimeFormatter cannot parse timezone names ('z')

    - by dimitrisli
    From DateTimeFormatter javadoc: Zone names: Time zone names ('z') cannot be parsed. Therefore timezone parsing like: System.out.println(new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy").parse("Fri Nov 11 12:13:14 JST 2010")); cannot be done in Joda: DateTimeFormatter dtf = DateTimeFormat.forPattern("EEE MMM dd HH:mm:ss z yyyy"); System.out.println(dtf.parseDateTime("Fri Nov 11 12:13:14 JST 2010")); //Exception in thread "main" java.lang.IllegalArgumentException: Invalid format: "Fri Nov 11 12:13:14 JST 2010" is malformed at "JST 2010" //at org.joda.time.format.DateTimeFormatter.parseDateTime(DateTimeFormatter.java:673)

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  • iPhone: Speeding up a search that's polling 17,000 Core Data objects

    - by randombits
    I have a class that conforms to UISearchDisplayDelegate and contains a UISearchBar. This view is responsible for allowing the user to poll a store of about 17,000 objects that are currently managed by Core Data. Everytime the user types in a character, I created an instance of a SearchOperation (subclasses NSOperation) that queries Core Data to find results that might match the search. The code in the search controller looks something like: - (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope { // Update the filtered array based on the search text and scope in a secondary thread if ([searchText length] < 3) { [filteredList removeAllObjects]; // First clear the filtered array. [self setFilteredList:NULL]; [self.tableView reloadData]; return; } NSDictionary *searchdict = [NSDictionary dictionaryWithObjectsAndKeys:scope, @"scope", searchText, @"searchText", nil]; [aSearchQueue cancelAllOperations]; SearchOperation *searchOp = [[SearchOperation alloc] initWithDelegate:self dataDict:searchdict]; [aSearchQueue addOperation:searchOp]; } And my search is rather straight forward. SearchOperation is a subclass of NSOperation. I overwrote the main method with the following code: - (void)main { if ([self isCancelled]) { return; } NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"MyEntity" inManagedObjectContext:managedObjectContext]; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; [fetchRequest setEntity:entity]; NSPredicate *predicate = NULL; predicate = [NSPredicate predicateWithFormat:@"(someattr contains[cd] %@)", searchText]; [fetchRequest setPredicate:predicate]; NSError *error = NULL; NSArray *fetchResults = [managedObjectContext executeFetchRequest:fetchRequest error:&error]; [fetchRequest release]; if (self.delegate != nil) [self.delegate didFinishSearching:fetchResults]; [pool drain]; } This code works, but it has several issues. It's slow. Even though I have the search happening in a separate thread other than the UI thread, querying 17,000 objects is clearly not optimal. If I'm not careful, crashes can happen. I set the max concurrent searches in my NSOperationQueue to 1 to avoid this. What else can I do to make this search faster? I think preloading all 17,000 objects into memory might be risky. There has to be a smarter way to conduct this search to give results back to the user faster.

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  • GIT Exclude Specific Files when Pushing to Specific Repository

    - by Kevin Sylvestre
    Is it possible to exclude specific files (*.ai, *.psd) when pushing to certain repositories with GIT? My need comes from trying to use GIT for both version control and deployment to Heroku. If I include my graphic assets in the deploy, they slug size is larger than desired. However, I do need to include all project files in my main github repository. Thanks, Kevin

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  • create a cab file in visual studio 2008

    - by nuttynibbles
    hi, i did my project in c# compact framework with visual studio 2008. now i wanna create a cab file. i follow the instructions at [http://www.mobilepractices.com/2008/02/how-to-create-windows-mobile-smart.html] but im having trouble. the part that says "Browse and find SampleKindOfResourceFile.xml and press OK.", i cant find any xml in my main folder list. the only xml is found is app.config is this the correct one?

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  • Why doesn't ADL find function templates?

    - by Huw Giddens
    What part of the C++ specification restricts argument dependent lookup from finding function templates in the set of associated namespaces? In other words, why won't the following compile? namespace ns { struct foo {}; template<int i> void frob(foo const&) {} } int main() { ns::foo f; frob<0>(f); }

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  • Error while launching soapUi 3.01

    - by Ayrad
    soapui.bat Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/cl i/CommandLineParser Where can I find this library? I already put JAVA HOME to my sdk and I am using windows XP. Any ideas how I can resolve this?

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  • How do I get apache RewriteRule working correctly for a subdomain?

    - by mike
    I just setup a subdomain with the following RewriteCond: RewriteCond $1 !^search.php$ RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^/?([^/]+)$ search.php?q=$1 [L,NS] I'm using the same rewrite condition on my main domain and it works perfectly. However, when I set it up on the subdomain, it simply outputs "index.php" when going to http://sub.domain.com Every page on the subdomain outputs the page name in the body instead of processing the code, except for the search page, which appears to be working correctly. What can I do to correct this issue?

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