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  • iPhone/iPad fatal error in C++ code produces no output in the log

    - by morgancodes
    I'm trying to move away from Objective-C to C++ for audio in my iPad programming, due to the a few reports I've heard of Objective-C selectors sometimes causing audio glitches. So I'm starting to use pure C++ files. When a fatal error happens in one of the C++ files, I get no output from the log. The app just crashes. For example, if I do this in my C++ file: env = new ADSR(); cout << "setting env to null\n"; env = NULL; env->setSustainLevel(1); cout << "called function on non-initialized env\n"; I get the following output: setting env to null After that, there's a method called on NULL, which apparently kills the app, but absolutely nothing to that effect is reported. What do I need to do to have useful information logged when there's an error in my C++ code?

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  • Visually [Diagrams/movies] Display events and states of System using old logs of Application to trac

    - by singh
    Hi In My Application many process runs. Having multiple threads in each process. Whenever any bug comes, I have to analyze thousands of lines of logs to know exact root-cause. I am thinking of an idea, Please guide me if it is feasible and good enough Each log have Process name , Thread id , and Time stamp along with message. If I can create a intelligence to capture what is happing with time and display in a movie which user can view it like a normal video. Forward – backward etc. It will help to reach root cause fast and bug tracing will become easy. Please guide me on library in c++ using which I can draw diagrams and display as movie

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  • c# error when using the Database.cs files

    - by Kumu
    Inconsistent accessibility: parameter type 'FoolballLeague.FootballLeagueDatabase' is less accessible than method 'FoolballLeague.MainMenu.MainMenu(FoolballLeague.FootballLeagueDatabase)' C:\Users\achini\Desktop\FootballLeague\FootballLeague\MainMenu.cs I have got this error when I insert this part to the code //public MainMenu(FootballLeagueDatabase footballLeagueDatabaseIn) //{ //InitializeComponent(); //footballLeagueDatabase = footballLeagueDatabaseIn; //} The whole code of the first part is as following, But I dont know what do I need to do to sort out this error. public partial class MainMenu : Form { FootballLeagueDatabase footballLeagueDatabase; Game game; Login login; public MainMenu() { InitializeComponent(); changePanel(1); } //public MainMenu(FootballLeagueDatabase footballLeagueDatabaseIn) //{ //InitializeComponent(); //footballLeagueDatabase = footballLeagueDatabaseIn; //} If you have any idea please let me know, I need this part to the system.

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  • C semaphores: sem_wait throwing inexplicable error

    - by tocapa
    I'm working on a problem which we have to use semaphores to solve. I have an array which contains two semaphores, gsem, and given certain conditions call sem_wait(&(gsem[me])), which is supposed to waiting until that particular process is woken up. However, for some reason it gives me the error Bad file descriptor. I looked up sem_wait and the Open Group spec says this is not an error sem_wait can cause. This is making my whole program crazy and I have no idea why this is failing.

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  • send datas to php with ajax - Internal Server Error(500)

    - by user1277467
    i try to send my datas to php with ajax but there's strange mistake. this is my ajax script, function deleteData2() { var artistIds = new Array(); $(".p16 input:checked").each(function(){ artistIds.push($(this).attr('id')); }); $.post('/json/crewonly/deleteDataAjax2', { json: JSON.stringify({'artistIds': artistIds}) }, function(response){ alert(response); }); } i think this works correctly but in php side, i face 500 internal server error(500). public function deleteDataAjax2() { $json = $_POST['json']; $data = json_decode($json); $artistIds = $data['artistIds']; $this->sendJSONResponse($artistIds); } Above code is my php. For example, when i try to send $data to ajax, i print my ids in json mode: However, when i try to send $artistIds to ajax side, i gives 500 error why?

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  • error in copy/ paste of image

    - by sayyad
    I am getting an error by implementing this simple code. I donot understand where I am doing mistake. // ERROR An unhandled exception of type 'System.NullReferenceException' occurred in ImageCSharp.exe Additional information: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. I can get clipboard text but why i can't get /set image. //CODE public void copy() { // Determine the active child form. fImage activeChild = this.ActiveMdiChild as fImage; if (activeChild != null) { PictureBox mypicbox = activeChild.picbox; string win_name = activeChild.Tag.ToString(); Clipboard.SetImage(mypicbox.Image); Clipboard.SetText(win_name); } } private void paste() { Image im= Clipboard.GetImage(); this.pictureBox1.Image = im; MessageBox.Show(im.Size.ToString()); } regards,

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  • What's a good, threadsafe, way to pass error strings back from a C shared library

    - by PerilousApricot
    Hello, all- I'm writing a C shared library for internal use (I'll be dlopen()'ing it to a c++ application, if that matters). The shared library loads (amongst other things) some java code through a JNI module, which means all manners of nightmare error modes can come out of the JVM that I need to handle intelligently in the application. Additionally, this library needs to be re-entrant. Is there in idiom for passing error strings back in this case, or am I stuck mapping errors to integers and using printfs to debug things? Thanks!

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  • MySQL Rating system (calculating average from two tables).

    - by MussuR
    I have two tables, videos and videos_ratings. The videos table has an int videoid field (and many others but those fields are not important I think) and many records. The videos_ratings table has 3 int fields: videoid, rating, rated_by which has many records (multiple records for each fields from the videos table) but not for all records from the videos table. Currently I have the following mysql query: SELECT `videos`.*, avg(`videos_ratings`.`vote`) FROM `videos`, `videos_ratings` WHERE `videos_ratings`.`videoid` = `videos`.`videoid` GROUP BY `videos_ratings`.`videoid` ORDER BY RAND() LIMIT 0, 12 It selects all the records from table videos that have a rating in table video_ratings and calculates the average correctly. But what I need is to select all records from the videos table, no matter if there is a rating for that record or not. And if there aren't any records in the videos_ratings table for that particular videos record, the average function should show 0. Hope someone could understand what I want... :) Thanks!

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  • DataGridView error when set DataSource

    - by user264464
    I got an error when run datagridview.DataSource = dataView; dataview is correct. I can see data inside it when I debug program. I got next error "Object reference not set to an instance of an object." Any Ideas? code: this.datagridview = new System.Windows.Forms.DataGridView(); ... DataSet ds = new DataSet(); XmlReaderSettings settings = new XmlReaderSettings(); StringReader stringReader = new StringReader(retString); XmlReader xmlReader = XmlReader.Create(stringReader, settings); ds.ReadXml(xmlReader); DataView dataView = ds.Tables[0].DefaultView; dataView is not null. I am able to view it when debug

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  • error in running recursion

    - by GOsha
    if running function returns server misconfiguration error function build_path($cid) { $result = array(); $DB = new MySQLTable; $DB->TblName = 'shop_categories'; $where['cat_id']['='] = $DB->CleanQuest($cid); $res = $DB->Select('cat_id,cat_name,cat_parent', $where); if($res !== 'false') { $pid = mysql_fetch_array($res); if($pid['cat_parent'] !== 0) { Echo $pid['cat_parent']; build_path($pid['cat_parent']); } else { Echo $pid['cat_id']; return true; } } return false; } I can't find an error here. Please help. Sorry for disturbing you all. The trouble was in comparison 'if($pid['cat_parent'] !== 0)': $pid['cat_parent'] was a string with int(0) Can i build this function to store full path without using GLOBALS and SESSION vars?

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  • Error 1005 when adding a foreign key constraint on mysql table

    - by luc
    Hello, I have a problem when upgrading a django and mysql app with south. I've tried to make a sql-based upgrade with the code generated by the django sqlall command and I have a similar problem. Here is the sql code: CREATE TABLE `programmations_basissupport` ( `id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `value` numeric(6, 0) NOT NULL ) ALTER TABLE `programmations_concert` ADD `basis_support_id` integer AFTER program_status_id; ALTER TABLE `programmations_concert` ADD CONSTRAINT `basis_support_id_refs_id_1e4ed8d7` FOREIGN KEY (`basis_support_id`) REFERENCES `programmations_basissupport` (`id`); An error is raised when adding the FK constraint: ERROR 1005 (HY000): Can't create table 'apidev_mnl.#sql-106e_632b00a' (errno: 150) Does anybody have an idea? Update: DEFAULT values where missing but even if I add the default='' in the django model, the creation of foreign keys fails. Thanks for your help

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  • jQuery jqXHR - cancel chained calls, trigger error chain

    - by m0sa
    I am creating a ajax utility for interfacing with my server methods. I would like to leverage jQuery 1.5+ deferred methods from the object returned from the jQuery.ajax() call. The situation is following. The serverside method always returns a JSON object: { success: true|false, data: ... } The client-side utility initiates the ajax call like this var jqxhr = $.ajax({ ... }); And the problem area: jqxhr.success(function(data, textStatus, xhr) { if(!data || !data.success) { ???? // abort processing, trigger error } }); return jqxhr; // return to caller so he can attach his own handlers So the question is how to cancel invocation of all the callers appended success callbacks an trigger his error handler in the place mentioned with ???? ? The documentation says the deferred function invocation lists are FIFO, so my success handler is definitely the first one.

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  • Create Static Library iOS Error

    - by bit-whacker
    This is FIrst time i try to create Cocoa Touch Static Library and follow these steps. Create New Project with Cocoa Touch Static Library named it By default i got single class with Demo.h and Demo.m. 2.Create a public function in .h and implement it in .m. 3.Select iOS Device and press cmd + B. 4.Copy Demo.a from products and the .h file drop it in my iOS App where i want to use it. 5.Then Import Demo.h and try to call the function that i wrote. Issue When try to Run the project showing this error. ld: warning: ignoring file /Users/Zenga/Documents/iOS/Static Library/myAppwithLib/Demo.a, file was built for archive which is not the architecture being linked (i386): /Users/Zenga/Documents/iOS/Static Library/myAppwithLib/Demo.a Undefined symbols for architecture i386: "_OBJC_CLASS_$_Demo", referenced from: objc-class-ref in ViewController.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) Please help if anyone have any idea about it.

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  • Getting "too many rows" error inside a "for" cursor loop

    - by Will
    I have a trigger that contains two cursors loops, one nested inside the other like this: FOR outer_rec IN outer_cursor LOOP FOR inner_rec IN inner_cursor LOOP -- Do some calculations END LOOP; END LOOP; Somewhere in this it is throwing the following error: ORA-01422: exact fetch returns more than requested number of rows I've been trying to determine where it's coming from for an hour or so.. but should this error never happen? Also.. I am assuming the inner loop automatically closes and opens itself again every time the outer loop goes the next record, i hope this is correct.

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  • python - selenium script syntax error

    - by William Hawkes
    Okay, I used selenium to test some automation, which I got to work. I did an export of the script for python. When I tried to run the python script it generated, it gave me a "SyntaxError: invalid syntax" error message. Here's the python script in question: from selenium import selenium import unittest, time, re class WakeupCall(unittest.TestCase): def setUp(self): self.verificationErrors = [] self.selenium = selenium("localhost", 4444, "*chrome", "http://the.web.site") self.selenium.start() def test_wakeup_call(self): sel = self.selenium sel.open("/index.php#deposit") sel.wait_for_page_to_load("30000") sel.click("link=History") sel.wait_for_page_to_load("30000") try: self.failUnless(sel.is_text_present("key phrase number 1.")) except AssertionError, e: self.verificationErrors.append(str(e)) The last line is what generated the "SyntaxError: invalid syntax" error message. A "^" was under the comma. The rest of the script goes as follows: def tearDown(self): self.selenium.stop() self.assertEqual([], self.verificationErrors) if name == "main": unittest.main()

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  • strange SQL Server attach database error

    - by George2
    Hello everyone, I am using SQL Server 2008 Enterprise with VSTS 2008, and I am developing a simple web application using ASP.Net and Forms Authentication. When I am using the configuration tool/menu of VSTS of my ASP.Net project (I want to use this tool to manually add some Forms authentication users), I met with the following error (SqlException), Trying to attach file D:\Projects\MyTest\App_Data\aspnetdb.mdf to automatically named database failed. It may be caused by existing the same name database, or may be caused by specified file can not be opened or caused by the specified file exists in UNC share. In my computer, there is no aspnetdb.mdf under dir D:\Projects\MyTest\App_Data, and I have used aspnet_regsql to generate database successfully before I run the configuration tool. Why there is such error? How to fix it? thanks in advance, George

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  • paperclipt get error can't dump File when upload video in rails

    - by user3510728
    when i try to upload video using paperclipt, i get error message can't dump File? model video : class Video < ActiveRecord::Base has_attached_file :avatar, :storage => :s3, :styles => { :mp4 => { :geometry => "640x480", :format => 'mp4' }, :thumb => { :geometry => "300x300>", :format => 'jpg', :time => 5 } }, :processors => [:ffmpeg] validates_attachment_presence :avatar validates_attachment_content_type :avatar, :content_type => /video/, :message => "Video not supported" end when i try to create video, im get this error?

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  • Compilation Error related

    - by aparna
    Given: 11. public static void test(String str) { 12. int check = 4; 13. if (check = str.length()) { 14. System.out.print(str.charAt(check -= 1) +", "); 15. } else { 16. System.out.print(str.charAt(0) + ", "); 17. } 18. } and the invocation: 21. test("four"); 22. test("tee"); 23. test("to"); What is the result? A. r, t, t, B. r, e, o, C. Compilation fails. D. An exception is thrown at runtime. Answer: C Can you explain why the compilation fails please?

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  • Linking error in OMNeT++ using Boost serialization library

    - by astriffe
    I'm very new to OMNeT++ and I'd like to use the serialization-library contained in the boost framework. However, when trying to use it, I get quite many errors such as: Description Resource Path Location Type undefined reference to `boost::archive::archive_exception::~archive_exception()' OmCCN line 36, external location: /home/alexander/UniBE/BT/simulator/boost-compiledLibs /include/boost/serialization/throw_exception.hpp C/C++ Problem . I guess the problem is that I didn't yet link the compiled library in OMNeT. I've had a look at the makefile but any changes there are worthless since it is generated automatically by makemake. Furthermore, trying to access the menu item 'makemake' in project properties OMNeT++ IDE throws an error (The currently displayed page contains invalid values). Can anyone give me a hint concerning what the error could cause or how to link the compiled library correctly? Any hints are very appreciated! cheers alex

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  • SQL Server Operating System

    - by NDeveloper
    Hi, I found an interesting article about Platform layer for SQL Server. It talks about SQLOS. As I understand it is an abstraction layer between the hardware and SQL Server. So does it mean that we can have SQL Server installed without installing windows? It sounds very strange to me... Please tell me where it is possible to find more info on this. And also whoever have used SQLOS and for what reason? What are the main advantages from developers view?

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