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• Optimizing multiple dispatch notification algorithm in C#?

  - by Robert Fraser

  Sorry about the title, I couldn't think of a better way to describe the problem. Basically, I'm trying to implement a collision system in a game. I want to be able to register a "collision handler" that handles any collision of two objects (given in either order) that can be cast to particular types. So if Player : Ship : Entity and Laser : Particle : Entity, and handlers for (Ship, Particle) and (Laser, Entity) are registered than for a collision of (Laser, Player), both handlers should be notified, with the arguments in the correct order, and a collision of (Laser, Laser) should notify only the second handler. A code snippet says a thousand words, so here's what I'm doing right now (naieve method): public IObservable<Collision<T1, T2>> onCollisionsOf<T1, T2>() where T1 : Entity where T2 : Entity { Type t1 = typeof(T1); Type t2 = typeof(T2); Subject<Collision<T1, T2>> obs = new Subject<Collision<T1, T2>>(); _onCollisionInternal += delegate(Entity obj1, Entity obj2) { if (t1.IsAssignableFrom(obj1.GetType()) && t2.IsAssignableFrom(obj2.GetType())) obs.OnNext(new Collision<T1, T2>((T1) obj1, (T2) obj2)); else if (t1.IsAssignableFrom(obj2.GetType()) && t2.IsAssignableFrom(obj1.GetType())) obs.OnNext(new Collision<T1, T2>((T1) obj2, (T2) obj1)); }; return obs; } However, this method is quite slow (measurable; I lost ~2 FPS after implementing this), so I'm looking for a way to shave a couple cycles/allocation off this. I thought about (as in, spent an hour implementing then slammed my head against a wall for being such an idiot) a method that put the types in an order based on their hash code, then put them into a dictionary, with each entry being a linked list of handlers for pairs of that type with a boolean indication whether the handler wanted the order of arguments reversed. Unfortunately, this doesn't work for derived types, since if a derived type is passed in, it won't notify a subscriber for the base type. Can anyone think of a way better than checking every type pair (twice) to see if it matches? Thanks, Robert

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• IE9 RC fixed the “Internet Explorer cannot display the webpage” error when running an ASP.NET application in Visual Studio

  - by Jon Galloway

  One of the obstacles ASP.NET developers faced in using the Internet Explorer 9 Beta was the dreaded “Internet Explorer cannot display the webpage” error when running an ASP.NET application in Visual Studio. In the bug information on Connect (issue 601047), Eric Lawrence said that the problem was due to “caused by failure to failover from IPv6 to IPv4 when the connection is local.” Robert MacLean gives some more information as what was going wrong: “The problem is Windows, especially since it assumes IPv6 is better than IPv4. Note […] that when you ping localhost you get an IPv6 address. So what appears to be happening is when IE9 tries to go to localhost it uses IPv6, and the ASP.NET Development Server is IPv4 only and so nothing loads and we get the error.” The Simple Fix - Install IE 9 RC Internet Explorer 9 RC fixes this bug, so if you had tried IE 9 Beta and stopped using it due to problems with ASP.NET development, install the RC. The Workaround in IE 9 Beta If you're stuck on IE 9 Beta for some reason, you can follow Robert's workaround, which involves a one character edit to your hosts file. I've been using it for months, and it works great. Open notepad (running as administrator) and edit the hosts file (found in %systemroot%\system32\drivers\etc) Remove the # comment character before the line starting with 127.0.0.1 Save the file - if you have problems saving, it's probably because you weren't running as administrator When you're done, your hosts file will end with the following lines (assuming you were using a default hosts file setup beforehand): # localhost name resolution is handled within DNS itself.     127.0.0.1       localhost #    ::1             localhost Note: more information on editing your hosts file here. This causes Windows to default to IPv4 when resolving localhost, which will point to 127.0.0.1, which is right where Cassini - I mean the ASP.NET Web Development Server - is waiting for it.

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• Obj-msg-send error in numberOfSectionsInTableView

  - by mukeshpawar

  import "AddBillerCategoryViewController.h" import "Globals.h" import "AddBillerViewController.h" import "AddBillerListViewController.h" import"KlinnkAppDelegate.h" @implementation AddBillerCategoryViewController @synthesize REASON, RESPVAR, currentAttribute,tbldata,strOptions; // This recipe adds a title for each section //Initialize the table view controller with the grouped style (AddBillerCategoryViewController *) init { if (self = [super initWithStyle:UITableViewStyleGrouped]);// self.title = @"Crayon Colors"; return self; } -(void)showBack { [[self navigationController] pushViewController:[[AddBillerViewController alloc] init] animated:YES]; } (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated { if ([viewController isKindOfClass:[AddBillerCategoryViewController class]]) { AddBillerCategoryViewController *controller = (AddBillerCategoryViewController *)viewController; [controller.tbldata reloadData]; } } (void)viewDidLoad { appDelegate = (KlinnkAppDelegate *)[[UIApplication sharedApplication] delegate]; appDelegate.catListArray.count; // Uncomment the following line to display an Edit button in the navigation bar for this view controller. // self.navigationItem.rightBarButtonItem = self.editButtonItem; //self.navigationItem.leftBarButtonItem = [[[UIBarButtonItem alloc] // initWithTitle:@"Back" // style:UIBarButtonItemStylePlain // target:self // action:@selector(showBack)] autorelease]; if(gotOK == 0) { //self.navigationItem.leftBarButtonItem.enabled = FALSE; dt = [[DateTime alloc] init]; strChannelID = @"IGLOO|MOBILE"; strDateTime = [dt findDateTime]; strTemp = [dt findSessionTime]; strSessionID = [appDelegate.KMobile stringByAppendingString:strTemp]; strResponseURL = @"http://115.113.110.139/Test/CbbpServerRequestHandler"; strResponseVar = @"serverResponseXML"; strRequestType = @"GETCATEGORY"; NSLog(@"Current Session id - %@", strSessionID); //conn = [[NSURLConnection alloc] init]; receivedData = [[NSMutableData data] retain]; //.................... currentAttribute = [[NSMutableString alloc] init]; // create XMl xmlData = [[NSData alloc] init]; xmlData = [self createXML]; // XMl has been created now convert it in to string xmlString = [[NSString alloc] initWithData:xmlData encoding:NSASCIIStringEncoding]; // Ataching other infromatin to he xml parameterString = [[NSString alloc] initWithString:@"mobileRequestXML="]; requestString = [[NSString alloc] init]; requestString = [parameterString stringByAppendingString:xmlString]; // give space betn two element. requestString = [requestString stringByReplacingOccurrencesOfString:@"<" withString:@" <"]; // Initalizing other parameters postData = [requestString dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; postLength = [NSString stringWithFormat:@"%d",[postData length]]; firstRequest = [[[NSMutableURLRequest alloc] init] autorelease]; REASON = [[NSMutableString alloc] init]; RESPVAR = [[NSMutableString alloc] init]; NSLog(@"\n \n Sending for 1st time........\n"); [self sendRequest]; NSLog(@"\n \n Sending for 2nd time........\n"); [self sendRequest]; NSLog(@"\n \n both request send........\n \n "); } //[tbldata reloadData]; [self retain]; [super viewDidLoad]; } -(void)sendRequest { finished = FALSE; NSLog(@"\n Sending Request \n\n %@", requestString); conn = [[NSURLConnection alloc] init]; if(gotOK == 0) [firstRequest setURL:[NSURL URLWithString:@"http://115.113.110.139/Test/CbbpMobileRequestHandler"]]; if(gotOK == 1) { [firstRequest setURL:[NSURL URLWithString:@"http://115.113.110.139//secure"]]; gotOK = 2; } [firstRequest setHTTPMethod:@"POST"]; [firstRequest setValue:postLength forHTTPHeaderField:@"Content-Length"]; [firstRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [firstRequest setHTTPBody:postData]; conn = [conn initWithRequest:firstRequest delegate:self startImmediately:YES]; [conn start]; while(!finished) { [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]; } if (conn) { //receivedData = [[NSMutableData data] retain]; NSLog(@"\n\n Received %d bytes of data",[receivedData length]); } else { NSLog(@"\n Not responding"); } } (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { NSLog(@" \n Send didReciveResponse"); [receivedData setLength:0]; } (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { NSLog(@" \n Send didReciveData"); [receivedData appendData:data]; } (void)connectionDidFinishLoading:(NSURLConnection *)connection { finished = TRUE; NSLog(@" \n Send didFinishLaunching"); // do something with the data // receivedData is declared as a method instance elsewhere NSLog(@"\n\n Succeeded! DIDFINISH Received %d bytes of data\n\n ",[receivedData length]); NSString *aStr = [[NSString alloc] initWithData:receivedData encoding:NSASCIIStringEncoding]; NSLog(aStr); //[conn release]; if([aStr isEqualToString:@"OK"]) gotOK = 1; NSLog(@" Value of gotOK - %d", gotOK); if(gotOK == 2) { responseData = [aStr dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; parser = [[NSXMLParser alloc] initWithData:responseData]; [parser setDelegate:self]; NSLog(@"\n start parsing"); [parser parse]; NSLog(@"\n PArsing over"); NSLog(@"\n check U / S and the RESVAR is - %@",RESPVAR); NSRange textRange; textRange =[aStr rangeOfString:@"<"]; if(textRange.location != NSNotFound) { if([RESPVAR isEqualToString:@"U"]) { self.navigationItem.rightBarButtonItem.enabled = TRUE; self.navigationItem.leftBarButtonItem.enabled = TRUE; NSLog(@" \n U......."); UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:REASON delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil]; [alert show]; [alert release]; } if([RESPVAR isEqualToString:@"S"]) { NSLog(@"\n S........"); [[self navigationController] pushViewController:[[AddBillerCategoryViewController alloc] init] animated:YES]; //[self viewDidLoad]; //[tbldata reloadData]; } } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Connection Problem" message:@"Enable to process your request at this time. Please try again." delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil]; [alert show]; [alert release]; //self.navigationItem.leftBarButtonItem.enabled = TRUE; } } NSLog(@"\n Last line of connectionDidFinish "); //[tableView reloadData]; } -(NSData *)createXML { NSString *strXmlNode = @" channel alliaceid session reqtype responseurl responsevar "; NSString *tempchannel = [strXmlNode stringByReplacingOccurrencesOfString:@"channel" withString:strChannelID options:NSBackwardsSearch range:NSMakeRange(0, [strXmlNode length])]; NSString *tempalliance = [tempchannel stringByReplacingOccurrencesOfString:@"alliaceid" withString:@"WALLET365" options:NSBackwardsSearch range:NSMakeRange(0, [tempchannel length])]; NSString *tempsession = [tempalliance stringByReplacingOccurrencesOfString:@"session" withString:strSessionID options:NSBackwardsSearch range:NSMakeRange(0, [tempalliance length])]; NSString *tempreqtype = [tempsession stringByReplacingOccurrencesOfString:@"reqtype" withString:strRequestType options:NSBackwardsSearch range:NSMakeRange(0,[tempsession length])]; NSString *tempresponseurl = [tempreqtype stringByReplacingOccurrencesOfString:@"responseurl" withString:strResponseURL options:NSBackwardsSearch range:NSMakeRange(0, [tempreqtype length])]; NSString *tempresponsevar = [tempresponseurl stringByReplacingOccurrencesOfString:@"responsevar" withString:strResponseVar options:NSBackwardsSearch range:NSMakeRange(0,[tempresponseurl length])]; NSData *data= [[NSString stringWithString:tempresponsevar] dataUsingEncoding:NSUTF8StringEncoding]; return data; } (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict { if([elementName isEqualToString:@"RESPVAL"]) currentAttribute = [NSMutableString string]; if([elementName isEqualToString:@"REASON"]) currentAttribute = [NSMutableString string]; if([elementName isEqualToString:@"COUNT"]) currentAttribute = [NSMutableString string]; if([elementName isEqualToString:@"CATNAME"]) currentAttribute = [NSMutableString string]; } (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName { if([elementName isEqualToString:@"RESPVAL"]) { [RESPVAR setString:currentAttribute]; //NSLog(@"\n Response VAR - %@", RESPVAR); } if([elementName isEqualToString:@"REASON"]) { [REASON setString:currentAttribute]; //NSLog(@"\n Reason - %@", REASON); } if([elementName isEqualToString:@"COUNT"]) { NSString *temp1 = [[NSString alloc] init]; temp1 = [temp1 stringByAppendingString:currentAttribute]; catCount = [temp1 intValue]; [temp1 release]; //NSLog(@"\n Cat Count - %d", catCount); } if([elementName isEqualToString:@"CATNAME"]) { [appDelegate.catListArray addObject:[NSString stringWithFormat:currentAttribute]]; //NSLog(@"%@", appDelegate.catListArray); } } (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string { if(self.currentAttribute) [self.currentAttribute setString:string]; } /* (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; } */ /* (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; } */ /* (void)viewWillDisappear:(BOOL)animated { [super viewWillDisappear:animated]; } */ /* (void)viewDidDisappear:(BOOL)animated { [super viewDidDisappear:animated]; } */ /* // Override to allow orientations other than the default portrait orientation. (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } */ (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview // Release anything that's not essential, such as cached data } pragma mark Table view methods -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; } // Customize the number of rows in the table view. -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { KlinnkAppDelegate *appDelegated = (KlinnkAppDelegate *)[[UIApplication sharedApplication] delegate]; return appDelegated.catListArray.count; } // Customize the appearance of table view cells. (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease]; } // Set up the cell... AddBillerCategoryViewController *mbvc = (AddBillerCategoryViewController *)[appDelegate.catListArray objectAtIndex:indexPath.row]; [cell setText:mbvc.strOptions]; return cell; } (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { // Navigation logic may go here. Create and push another view controller. // AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil]; // [self.navigationController pushViewController:anotherViewController]; // [anotherViewController release]; gotOK = 0; int j = indexPath.row; appDelegate.catName = [[NSString alloc] init]; appDelegate.catName = [appDelegate.catName stringByAppendingString:[appDelegate.catListArray objectAtIndex:j]]; [[self navigationController] pushViewController:[[AddBillerListViewController alloc] init] animated:YES]; } /* // Override to support conditional editing of the table view. (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { // Return NO if you do not want the specified item to be editable. return YES; } */ /* // Override to support editing the table view. (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { // Delete the row from the data source [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES]; } else if (editingStyle == UITableViewCellEditingStyleInsert) { // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view } } */ /* // Override to support rearranging the table view. (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath { } */ /* // Override to support conditional rearranging of the table view. (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath { // Return NO if you do not want the item to be re-orderable. return YES; } */ (void)dealloc { [REASON release]; [RESPVAR release]; [currentAttribute release]; [tbldata release]; [super dealloc]; } @end In the Above code .. numberOfSectionsInTableView ,i get error of obj-msg-send i have intialize the array catlist and even not released it anywhere still why i am getting this error please help me i am badly stuck' thanks in advacnce

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• Slowdowns when reading from an urlconnection's inputstream (even with byte[] and buffers)

  - by user342677

  Ok so after spending two days trying to figure out the problem, and reading about dizillion articles, i finally decided to man up and ask to for some advice(my first time here). Now to the issue at hand - I am writing a program which will parse api data from a game, namely battle logs. There will be A LOT of entries in the database(20+ million) and so the parsing speed for each battle log page matters quite a bit. The pages to be parsed look like this: http://api.erepublik.com/v1/feeds/battle_logs/10000/0. (see source code if using chrome, it doesnt display the page right). It has 1000 hit entries, followed by a little battle info(lastpage will have <1000 obviously). On average, a page contains 175000 characters, UTF-8 encoding, xml format(v 1.0). Program will run locally on a good PC, memory is virtually unlimited(so that creating byte[250000] is quite ok). The format never changes, which is quite convenient. Now, I started off as usual: //global vars,class declaration skipped public WebObject(String url_string, int connection_timeout, int read_timeout, boolean redirects_allowed, String user_agent) throws java.net.MalformedURLException, java.io.IOException { // Open a URL connection java.net.URL url = new java.net.URL(url_string); java.net.URLConnection uconn = url.openConnection(); if (!(uconn instanceof java.net.HttpURLConnection)) { throw new java.lang.IllegalArgumentException("URL protocol must be HTTP"); } conn = (java.net.HttpURLConnection) uconn; conn.setConnectTimeout(connection_timeout); conn.setReadTimeout(read_timeout); conn.setInstanceFollowRedirects(redirects_allowed); conn.setRequestProperty("User-agent", user_agent); } public void executeConnection() throws IOException { try { is = conn.getInputStream(); //global var l = conn.getContentLength(); //global var } catch (Exception e) { //handling code skipped } } //getContentStream and getLength methods which just return'is' and 'l' are skipped Here is where the fun part began. I ran some profiling (using System.currentTimeMillis()) to find out what takes long ,and what doesnt. The call to this method takes only 200ms on avg public InputStream getWebPageAsStream(int battle_id, int page) throws Exception { String url = "http://api.erepublik.com/v1/feeds/battle_logs/" + battle_id + "/" + page; WebObject wobj = new WebObject(url, 10000, 10000, true, "Mozilla/5.0 " + "(Windows; U; Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3 ( .NET CLR 3.5.30729)"); wobj.executeConnection(); l = wobj.getContentLength(); // global variable return wobj.getContentStream(); //returns 'is' stream } 200ms is quite expected from a network operation, and i am fine with it. BUT when i parse the inputStream in any way(read it into string/use java XML parser/read it into another ByteArrayStream) the process takes over 1000ms! for example, this code takes 1000ms IF i pass the stream i got('is') above from getContentStream() directly to this method: public static Document convertToXML(InputStream is) throws ParserConfigurationException, IOException, SAXException { DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder db = dbf.newDocumentBuilder(); Document doc = db.parse(is); doc.getDocumentElement().normalize(); return doc; } this code too, takes around 920ms IF the initial InputStream 'is' is passed in(dont read into the code itself - it just extracts the data i need by directly counting the characters, which can be done thanks to the rigid api feed format): public static parsedBattlePage convertBattleToXMLWithoutDOM(InputStream is) throws IOException { // Point A BufferedReader br = new BufferedReader(new InputStreamReader(is)); LinkedList ll = new LinkedList(); String str = br.readLine(); while (str != null) { ll.add(str); str = br.readLine(); } if (((String) ll.get(1)).indexOf("error") != -1) { return new parsedBattlePage(null, null, true, -1); } //Point B Iterator it = ll.iterator(); it.next(); it.next(); it.next(); it.next(); String[][] hits_arr = new String[1000][4]; String t_str = (String) it.next(); String tmp = null; int j = 0; for (int i = 0; t_str.indexOf("time") != -1; i++) { hits_arr[i][0] = t_str.substring(12, t_str.length() - 11); tmp = (String) it.next(); hits_arr[i][1] = tmp.substring(14, tmp.length() - 9); tmp = (String) it.next(); hits_arr[i][2] = tmp.substring(15, tmp.length() - 10); tmp = (String) it.next(); hits_arr[i][3] = tmp.substring(18, tmp.length() - 13); it.next(); it.next(); t_str = (String) it.next(); j++; } String[] b_info_arr = new String[9]; int[] space_nums = {13, 10, 13, 11, 11, 12, 5, 10, 13}; for (int i = 0; i < space_nums.length; i++) { tmp = (String) it.next(); b_info_arr[i] = tmp.substring(space_nums[i] + 4, tmp.length() - space_nums[i] - 1); } //Point C return new parsedBattlePage(hits_arr, b_info_arr, false, j); } I have tried replacing the default BufferedReader with BufferedReader br = new BufferedReader(new InputStreamReader(is), 250000); This didnt change much. My second try was to replace the code between A and B with: Iterator it = IOUtils.lineIterator(is, "UTF-8"); Same result, except this time A-B was 0ms, and B-C was 1000ms, so then every call to it.next() must have been consuming some significant time.(IOUtils is from apache-commons-io library). And here is the culprit - the time taken to parse the stream to string, be it by an iterator or BufferedReader in ALL cases was about 1000ms, while the rest of the code took 0ms(e.g. irrelevant). This means that parsing the stream to LinkedList, or iterating over it, for some reason was eating up a lot of my system resources. question was - why? Is it just the way java is made...no...thats just stupid, so I did another experiment. In my main method I added after the getWebPageAsStream(): //Point A ba = new byte[l]; // 'l' comes from wobj.getContentLength above bytesRead = is.read(ba); //'is' is our URLConnection original InputStream offset = bytesRead; while (bytesRead != -1) { bytesRead = is.read(ba, offset - 1, l - offset); offset += bytesRead; } //Point B InputStream is2 = new ByteArrayInputStream(ba); //Now just working with 'is2' - the "copied" stream The InputStream-byte[] conversion took again 1000ms - this is the way many ppl suggested to read an InputStream, and stil it is slow. And guess what - the 2 parser methods above (convertToXML() and convertBattlePagetoXMLWithoutDOM(), when passed 'is2' instead of 'is' took, in all 4 cases, under 50ms to complete. I read a suggestion that the stream waits for connection to close before unblocking, so i tried using HttpComponentsClient 4.0 (http://hc.apache.org/httpcomponents-client/index.html) instead, but the initial InputStream took just as long to parse. e.g. this code: public InputStream getWebPageAsStream2(int battle_id, int page) throws Exception { String url = "http://api.erepublik.com/v1/feeds/battle_logs/" + battle_id + "/" + page; HttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet(url); HttpParams p = new BasicHttpParams(); HttpConnectionParams.setSocketBufferSize(p, 250000); HttpConnectionParams.setStaleCheckingEnabled(p, false); HttpConnectionParams.setConnectionTimeout(p, 5000); httpget.setParams(p); HttpResponse response = httpclient.execute(httpget); HttpEntity entity = response.getEntity(); l = (int) entity.getContentLength(); return entity.getContent(); } took even longer to process(50ms more for just the network) and the stream parsing times remained the same. Obviously it can be instantiated so as to not create HttpClient and properties every time(faster network time), but the stream issue wont be affected by that. So we come to the center problem - why does the initial URLConnection InputStream(or HttpClient InputStream) take so long to process, while any stream of same size and content created locally is orders of magnitude faster? I mean, the initial response is already somewhere in RAM, and I cant see any good reasong why it is processed so slowly compared to when a same stream is just created from a byte[]. Considering I have to parse million of entries and thousands of pages like that, a total processing time of almost 1.5s/page seems WAY WAY too long. Any ideas? P.S. Please ask in any more code is required - the only thing I do after parsing is make a PreparedStatement and put the entries into JavaDB in packs of 1000+, and the perfomance is ok ~ 200ms/1000entries, prb could be optimized with more cache but I didnt look into it much.

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• Can you use SQLite 64 bit odbc from powershell

  - by Levin Magruder

  Basically, my question is "Does this combo work for anyone," and, "Can you see what I am doing wrong" I have installed 64 bit ODBC driver for sqlite, downloaded from this page. I am running powershell version 2 on window 7. In ODBC configuration I create a system DSN with name LoveBoat, pointing at a valid file. I don't have any "real" apps to test whether the ODBC connection works, but a simple program I list below works. However, with PowerShell, which is what I want: $x = new-object System.Data.Odbc.OdbcConnection("DSN=LoveBoat") $x.open() That yields the error: Exception calling "Open" with "0" argument(s): "The type initializer for 'System.Transactions.Diagnostics.DiagnosticTrace' threw an exception." At line:1 char:8 + $x.Open <<<< () + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : DotNetMethodException On the other hand the test program below runs and prints out the expected data. using System.Data.Odbc; using System.Data; using System; public class program { public static void Main(string[] args) { OdbcConnection conn = new OdbcConnection(@"DSN=LoveBoat"); conn.Open(); OdbcCommand comm = new OdbcCommand(); comm.CommandText= "SELECT Name From Myfavoritetable"; comm.Connection = conn; OdbcDataReader myReader = comm.ExecuteReader(CommandBehavior.CloseConnection); while(myReader.Read()) { Console.WriteLine(myReader[0]); } } }

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• php_ibm_db2.dll on IIS 7.5 using PHP 5.3 error message

  - by grmbl

  I'm trying to use ibm_db2 extension to access iSeries DB2 database. This is the testcode (taken from here) <?php $database = 'ALI452BFAL'; //library $user = 'STN452'; $password = '**********'; $hostname = 'myserverip'; $port = 50000; $conn_string = "DRIVER={IBM DB2 ODBC DRIVER};DATABASE=$database;" . "HOSTNAME=$hostname;PORT=$port;PROTOCOL=TCPIP;UID=$user;PWD=$password;"; $conn = db2_connect($conn_string, '', ''); if ($conn) { print "ok"; db2_close($conn); } else { echo db2_conn_error() . '<br>' . db2_conn_errormsg(); } ?> I have installed a very basic package containing the db2 driver and added this as an extension. (IBM Data Server Driver for ODBC, CLI, and .NET.msi) This is my result: 08001 [IBM][CLI Driver] SQL30081N A communication error has been detected. Communication protocol being used: "TCP/IP". Communication API being used: "SOCKETS". Location where the error was detected: "10.10.0.120". Communication function detecting the error: "connect". Protocol specific error code(s): "10061", "", "". SQLSTATE=08001 SQLCODE=-30081 Anybody tried this before??

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• hall.dll errors

  - by Robert Elliott

  I am getting frequent BSoDs, mostly with hall.dll errors. I have Dell Inspiron laptop running Windows 7 SP1. The following file, werfault, is shown below. Can anyone help me work out what is wrong? Version=1 EventType=BlueScreen EventTime=129987824768810026 ReportType=4 Consent=1 ReportIdentifier=1c3e1c58-3b30-11e2-9074-002219f61870 IntegratorReportIdentifier=113012-32557-01 Response.type=4 DynamicSig[1].Name=OS Version DynamicSig[1].Value=6.1.7601.2.1.0.768.3 DynamicSig[2].Name=Locale ID DynamicSig[2].Value=2057 UI[2]=C:\Windows\system32\wer.dll UI[3]=Windows has recovered from an unexpected shutdown UI[4]=Windows can check online for a solution to the problem. UI[5]=&Check for solution UI[6]=&Check later UI[7]=Cancel UI[8]=Windows has recovered from an unexpected shutdown UI[9]=A problem caused Windows to stop working correctly. Windows will notify you if a solution is available. UI[10]=Close Sec[0].Key=BCCode Sec[0].Value=a Sec[1].Key=BCP1 Sec[1].Value=0000000000000000 Sec[2].Key=BCP2 Sec[2].Value=0000000000000002 Sec[3].Key=BCP3 Sec[3].Value=0000000000000000 Sec[4].Key=BCP4 Sec[4].Value=FFFFF80002C0E477 Sec[5].Key=OS Version Sec[5].Value=6_1_7601 Sec[6].Key=Service Pack Sec[6].Value=1_0 Sec[7].Key=Product Sec[7].Value=768_1 File[0].CabName=113012-32557-01.dmp File[0].Path=113012-32557-01.dmp File[0].Flags=589826 File[0].Type=2 File[0].Original.Path=C:\Windows\Minidump\113012-32557-01.dmp File[1].CabName=sysdata.xml File[1].Path=WER-75941-0.sysdata.xml File[1].Flags=589826 File[1].Type=5 File[1].Original.Path=C:\Users\Robert\AppData\Local\Temp\WER-75941-0.sysdata.xml File[2].CabName=Report.cab File[2].Path=Report.cab File[2].Flags=196608 File[2].Type=7 File[2].Original.Path=Report.cab FriendlyEventName=Shut down unexpectedly ConsentKey=BlueScreen AppName=Windows AppPath=C:\Windows\System32\WerFault.exe *********From the minidump file**** RAX = fffff88002f22150 RBX = fffffa80074141f0 RCX = 000000000000000a RDX = 0000000000000000 RSI = fffffa8007278180 RDI = 0000000000000001 R9 = 0000000000000000 R10 = fffff80002c0e477 R11 = 0000000000000000 R12 = fffffa800523e7a0 R13 = 0000000000001000 R14 = 0000000000000028 R15 = fffffa80074141f0 RBP = fffff88002f22210 RIP = fffff80002cd3fc0 RSP = fffff88002f22048 SS = 0000 GS = 002b FS = 0053 ES = 002b DS = 002b CS = 0010 Flags = 00200286 fffff800`02e99ac0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99ad0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99ae0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99af0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b30 00 00 00 00 00 00 00 00 00 00 00 00 04 00 00 00 ................ fffff800`02e99b40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e99b50 00 00 00 00 00 00 00 00 00 00 00 00 ............ fffff800`02e81928 00 00 00 00 .... fffff800`02e81924 00 00 00 00 .... fffff800`02e0a880 37 36 30 31 2E 31 37 39 34 34 2E 61 6D 64 36 34 7601.17944.amd64 fffff800`02e0a890 66 72 65 2E 77 69 6E 37 73 70 31 5F 67 64 72 2E fre.win7sp1_gdr. fffff800`02e0a8a0 31 32 30 38 33 30 2D 30 33 33 33 00 00 00 00 00 120830-0333..... fffff800`02e0a8b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a8f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a900 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a910 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a920 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a930 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a940 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a950 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ fffff800`02e0a960 35 36 65 38 62 61 31 33 2D 37 30 32 39 2D 34 37 56e8ba13-7029-47 fffff800`02e0a970 32 38 2D 61 35 30 36 2D 32 64 64 62 34 61 30 63 28-a506-2ddb4a0c fffff800`02c0e000 C5 0F 85 79 02 00 00 8B 9C 24 90 00 00 00 E9 A5 ...y.....$...... fffff800`02c0e010 00 00 00 44 2B C3 45 33 C9 E8 5E 14 00 00 49 3B ...D+.E3..^...I; fffff800`02c0e020 C5 74 2B 44 8B 8C 24 90 00 00 00 48 8B C8 41 8D .t+D..$....H..A. fffff800`02c0e030 51 FF 41 3B D5 76 0D 44 8B C2 49 83 E8 01 48 8B Q.A;.v.D..I...H. fffff800`02c0e040 49 08 75 F6 48 89 79 08 41 03 D9 48 8B F8 3B DD I.u.H.y.A..H..;. fffff800`02c0e050 75 08 48 8B C7 E9 26 02 00 00 48 8B 96 98 00 00 u.H...&...H..... fffff800`02c0e060 00 48 8D 84 24 90 00 00 00 44 8B C5 48 89 44 24 .H..$....D..H.D$ fffff800`02c0e070 28 44 2B C3 45 33 C9 48 8B CE 44 88 6C 24 20 E8 (D+.E3.H..D.l$ . fffff800`02c0e080 CC 14 00 00 49 3B C5 74 2B 44 8B 8C 24 90 00 00 ....I;.t+D..$... fffff800`02c0e090 00 48 8B C8 41 8D 51 FF 41 3B D5 76 0D 44 8B C2 .H..A.Q.A;.v.D.. fffff800`02c0e0a0 49 83 E8 01 48 8B 49 08 75 F6 48 89 79 08 41 03 I...H.I.u.H.y.A. fffff800`02c0e0b0 D9 48 8B F8 3B DD 74 9A 44 38 AE 28 01 00 00 0F .H..;.t.D8.(.... fffff800`02c0e0c0 85 DF 00 00 00 48 8D 44 24 30 4C 8D 8C 24 A0 00 .....H.D$0L..$.. fffff800`02c0e0d0 00 00 4C 8D 84 24 A8 00 00 00 8B D5 48 8B CE 48 ..L..$......H..H fffff800`02c0e0e0 89 44 24 20 E8 F7 1F 00 00 8B F8 89 84 24 90 00 .D$ .........$.. fffff800`02c0e0f0 00 00 41 3B C5 0F 84 83 01 00 00 4C 8B A4 24 A8 ..A;.......L..$. fffff800`02c0e100 00 00 00 44 8B 84 24 A0 00 00 00 48 8B 8E 98 00 ...D..$....H.... fffff800`02c0e110 00 00 49 8B D4 44 8B C8 E8 DB 1B 00 00 49 3B C5 ..I..D.......I;. fffff800`02c0e120 74 35 48 8B 96 98 00 00 00 48 8D 84 24 90 00 00 t5H......H..$... fffff800`02c0e130 00 41 B1 01 48 89 44 24 28 44 8B C5 48 8B CE 44 .A..H.D$(D..H..D fffff800`02c0e140 88 6C 24 20 E8 43 12 00 00 49 3B C5 0F 84 2C 01 .l$ .C...I;...,. fffff800`02c0e150 00 00 E9 29 01 00 00 48 8B 5C 24 30 49 3B DD 74 ...)...H.\$0I;.t fffff800`02c0e160 2A 4D 3B E5 74 0C 48 8B D3 49 8B CC FF 15 AE CE *M;.t.H..I...... fffff800`02c0e170 01 00 48 8B CB FF 15 95 CF 01 00 33 D2 48 8B CB ..H........3.H.. fffff800`02c0e180 FF 15 AA CE 01 00 E9 F3 00 00 00 C1 E7 0C 41 B8 ..............A. fffff800`02c0e190 01 00 00 00 49 8B CC 8B D7 FF 15 99 CE 01 00 E9 ....I........... fffff800`02c0e1a0 DA 00 00 00 2B EB 33 C9 41 B8 48 61 6C 20 8B D5 ....+.3.A.Hal .. fffff800`02c0e1b0 44 8B FD 48 C1 E2 03 FF 15 33 D4 01 00 4C 8B F0 D..H.....3...L.. fffff800`02c0e1c0 49 3B C5 0F 84 8F 00 00 00 45 8B E5 41 3B ED 76 I;.......E..A;.v fffff800`02c0e1d0 3F 4C 8B E8 BA 00 10 00 00 B9 04 00 00 00 41 B8 ?L............A. fffff800`02c0e1e0 48 61 6C 20 FF 15 06 D4 01 00 49 89 45 00 48 85 Hal ......I.E.H. fffff800`02c0e1f0 C0 74 39 48 8B C8 FF 15 BC CE 01 00 48 C1 E8 20 .t9H........H.. fffff800`02c0e200 85 C0 75 28 41 FF C4 49 83 C5 08 44 3B E5 72 C4 ..u(A..I...D;.r. fffff800`02c0e210 48 8B 8E 98 00 00 00 44 8B C5 BA 01 00 00 00 E8 H......D........ fffff800`02c0e220 58 19 00 00 4C 8B E8 48 85 C0 75 6C 45 33 ED 45 X...L..H..ulE3.E fffff800`02c0e230 3B E5 76 19 49 8B EE 48 8B 4D 00 33 D2 FF 15 ED ;.v.I..H.M.3.... fffff800`02c0e240 CD 01 00 48 83 C5 08 49 83 EC 01 75 EA 33 D2 49 ...H...I...u.3.I fffff800`02c0e250 8B CE FF 15 D8 CD 01 00 41 3B DD 76 21 8B EB 48 ........A;.v!..H fffff800`02c0e260 8B 96 98 00 00 00 48 8B 5F 08 4C 8B C7 48 8B CE ......H._.L..H.. fffff800`02c0e270 E8 2B 15 00 00 48 83 ED 01 48 8B FB 75 E1 33 C0 .+...H...H..u.3. fffff800`02c0e280 48 8B 9C 24 98 00 00 00 48 83 C4 50 41 5F 41 5E H..$....H..PA_A^ fffff800`02c0e290 41 5D 41 5C 5F 5E 5D C3 8D 4D FF 85 C9 74 0C 8B A]A\_^]..M...t.. fffff800`02c0e2a0 D1 48 83 EA 01 48 8B 40 08 75 F6 48 89 78 08 49 [email protected] fffff800`02c0e2b0 8B FD 85 ED 74 29 49 8B DE 48 8B 0B FF 15 F6 CD ....t)I..H...... fffff800`02c0e2c0 01 00 41 89 45 00 48 8B 03 48 83 C3 08 48 83 C8 ..A.E.H..H...H.. fffff800`02c0e2d0 0F 49 83 EF 01 49 89 45 10 4D 8B 6D 08 75 DA 48 .I...I.E.M.m.u.H fffff800`02c0e2e0 8B 8E 98 00 00 00 48 8D 54 24 38 48 83 C1 78 FF ......H.T$8H..x. fffff800`02c0e2f0 15 83 CD 01 00 4C 8B 9E 98 00 00 00 48 8D 4C 24 .....L......H.L$ fffff800`02c0e300 38 41 01 AB D0 00 00 00 FF 15 3A CD 01 00 33 D2 8A........:...3. fffff800`02c0e310 49 8B CE FF 15 17 CD 01 00 E9 34 FD FF FF 90 90 I.........4..... fffff800`02c0e320 90 90 90 90 45 85 C0 74 43 48 89 5C 24 08 48 89 ....E..tCH.\$.H. fffff800`02c0e330 74 24 10 57 48 83 EC 20 48 8B F1 41 8B F8 48 8B t$.WH.. H..A..H. fffff800`02c0e340 5A 08 4C 8B C2 48 8B 96 98 00 00 00 48 8B CE E8 Z.L..H......H... fffff800`02c0e350 4C 14 00 00 48 83 EF 01 48 8B D3 75 E1 48 8B 5C L...H...H..u.H.\ fffff800`02c0e360 24 30 48 8B 74 24 38 48 83 C4 20 5F C3 90 90 90 $0H.t$8H.. _.... fffff800`02c0e370 90 90 90 90 48 8B C4 48 89 58 08 48 89 68 10 48 ....H..H.X.H.h.H fffff800`02c0e380 89 70 18 48 89 78 20 41 54 41 55 4C 8B D9 4D 8B .p.H.x ATAUL..M. fffff800`02c0e390 E0 48 8B F2 B9 FF 0F 00 00 4D 85 DB 75 08 4C 8B .H.......M..u.L. fffff800`02c0e3a0 D1 40 32 FF EB 12 4D 8B 93 88 00 00 00 41 8A BB [email protected].. fffff800`02c0e3b0 91 00 00 00 49 C1 EA 0C 44 8B 44 24 38 41 8B C1 ....I...D.D$8A.. fffff800`02c0e3c0 4C 2B 4E 20 23 C1 49 C1 E9 0C 41 BD 00 10 00 00 L+N #.I...A..... fffff800`02c0e3d0 41 8B D5 41 8B E9 2B D0 8B CA 4C 39 54 EE 30 76 A..A..+...L9T.0v fffff800`02c0e3e0 04 33 C9 EB 4F 41 3B D0 73 43 4C 8D 4C EE 38 4D .3..OA;.sCL.L.8M fffff800`02c0e3f0 39 11 77 39 49 8B 59 F8 48 8D 43 01 49 3B 01 75 9.w9I.Y.H.C.I;.u fffff800`02c0e400 2C 48 8B C3 49 33 01 48 A9 00 00 F0 FF 75 1E 40 ,H..I3.H.....u.@ fffff800`02c0e410 80 FF 01 74 0C 49 33 19 48 F7 C3 F0 FF FF FF 75 ...t.I3.H......u fffff800`02c0e420 0C 41 03 CD 49 83 C1 08 41 3B C8 72 C2 41 3B C8 .A..I...A;.r.A;. fffff800`02c0e430 41 0F 47 C8 4D 85 DB 0F 84 92 00 00 00 41 80 BB A.G.M........A.. fffff800`02c0e440 28 01 00 00 00 0F 84 84 00 00 00 4C 39 54 EE 30 (..........L9T.0 fffff800`02c0e450 76 7D 8B CA 48 8D 44 EE 38 41 3B D0 73 11 4C 39 v}..H.D.8A;.s.L9 fffff800`02c0e460 10 76 0C 41 03 CD 48 83 C0 08 41 3B C8 72 EF 49 .v.A..H...A;.r.I fffff800`02c0e470 8B 44 24 18 41 3B C8 44 8B 08 4C 8B 50 08 41 0F .D$.A;.D..L.P.A. fffff800`02c0e480 47 C8 41 C1 E9 0C EB 3A 45 8B 02 41 8D 41 01 41 G.A....:E..A.A.A fffff800`02c0e490 C1 E8 0C 44 3B C0 75 2E 41 8B C0 41 33 C1 A9 00 ...D;.u.A..A3... fffff800`02c0e4a0 00 F0 FF 75 21 40 80 FF 01 74 0D 41 8B C0 41 33 [email protected] fffff800`02c0e4b0 C1 A9 F0 FF FF FF 75 0E 4D 8B 52 08 45 8B C8 41 ......u.M.R.E..A fffff800`02c0e4c0 03 D5 3B D1 72 C2 3B D1 0F 47 D1 8B C2 EB 02 8B ..;.r.;..G...... fffff800`02c0e4d0 C1 48 8B 5C 24 18 48 8B 6C 24 20 48 8B 74 24 28 .H.\$.H.l$ H.t$( fffff800`02c0e4e0 48 8B 7C 24 30 41 5D 41 5C C3 90 90 90 90 90 90 H.|$0A]A\....... fffff800`02c0e4f0 48 89 5C 24 08 48 89 6C 24 10 48 89 74 24 18 57 H.\$.H.l$.H.t$.W fffff800`02c0e500 41 54 41 55 48 83 EC 30 48 8B 5C 24 70 4D 8B E1 ATAUH..0H.\$pM.. fffff800`02c0e510 49 8B F0 8B 03 4C 8B EA 48 8B E9 89 44 24 20 E8 I....L..H...D$ . fffff800`02c0e520 50 FE FF FF 49 8B CC 89 03 49 2B 4D 20 8B F8 48 P...I....I+M ..H fffff800`02c0e530 C1 E9 0C 8B C9 49 8B 54 CD 30 49 8B CC 48 C1 E2 .....I.T.0I..H.. fffff800`02c0e540 0C 81 E1 FF 0F 00 00 48 03 D1 48 85 F6 74 72 48 .......H..H..trH fffff800`02c0e550 39 95 88 00 00 00 73 69 4C 8B 4E 18 48 8B 84 24 9.....siL.N.H..$ fffff800`02c0e560 80 00 00 00 41 8B DC 41 8B 09 81 E3 FF 0F 00 00 ....A..A........ fffff800`02c0e570 03 CB 80 7C 24 78 01 48 89 08 75 17 4D 8B C4 49 ...|$x.H..u.M..I fffff800`02c0e580 8B D5 48 8B CD C6 44 24 28 01 89 7C 24 20 E8 C5 ..H...D$(..|$ .. fffff800`02c0e590 06 00 00 8B C7 C1 EF 0C 25 FF 0F 00 00 8D 8C 18 ........%....... fffff800`02c0e5a0 FF 0F 00 00 48 8B 46 18 C1 E9 0C 03 CF 74 0C 8B ....H.F......t.. fffff800`02c0e5b0 D1 48 83 EA 01 48 8B 40 08 75 F6 48 89 46 18 EB [email protected].. fffff800`02c0e5c0 0B 48 8B 84 24 80 00 00 00 48 89 10 48 8B 5C 24 .H..$....H..H.\$ fffff800`02c0e5d0 50 48 8B 6C 24 58 48 8B 74 24 60 48 83 C4 30 41 PH.l$XH.t$`H..0A fffff800`02c0e5e0 5D 41 5C 5F C3 90 90 90 90 90 90 90 4D 85 C0 0F ]A\_........M... fffff800`02c0e5f0 84 09 01 00 00 48 8B C4 48 89 58 08 48 89 68 10 .....H..H.X.H.h. fffff800`02c0e600 48 89 70 18 48 89 78 20 41 54 41 55 41 56 48 83 H.p.H.x ATAUAVH. fffff800`02c0e610 EC 30 44 8A 64 24 78 49 8B D8 49 8B F1 4C 8B EA .0D.d$xI..I..L.. fffff800`02c0e620 4C 8B F1 49 89 58 18 41 80 FC 01 0F 84 AF 00 00 L..I.X.A........ fffff800`02c0e630 00 8B 7C 24 70 85 FF 0F 84 9F 00 00 00 4C 8B CE ..|$p........L.. fffff800`02c0e640 4C 8B C3 49 8B D5 49 8B CE 89 7C 24 20 E8 22 FD L..I..I...|$ .". fffff800`02c0e650 FF FF 48 8B CE 49 2B 4D 20 8B E8 48 C1 E9 0C 8B ..H..I+M ..H.... fffff800`02c0e660 C9 49 8B 54 CD 30 48 8B CE 48 C1 E2 0C 81 E1 FF .I.T.0H..H...... fffff800`02c0e670 0F 00 00 48 03 D1 49 39 96 88 00 00 00 73 52 4C ...H..I9.....sRL fffff800`02c0e680 8B 4B 18 4C 8B C6 49 8B D5 49 8B CE 44 88 64 24 .K.L..I..I..D.d$ fffff800`02c0e690 28 89 6C 24 20 E8 BE 05 00 00 8B C5 44 8B DE 25 (.l$ .......D..% fffff800`02c0e6a0 FF 0F 00 00 41 81 E3 FF 0F 00 00 41 8D 8C 03 FF ....A......A.... fffff800`02c0e6b0 0F 00 00 8B C5 C1 E8 0C C1 E9 0C 03 C8 48 8B 43 .............H.C fffff800`02c0e6c0 18 74 0A 48 83 E9 01 48 8B 40 08 75 F6 48 89 43 [email protected] fffff800`02c0e6d0 18 48 03 F5 2B FD 0F 85 61 FF FF FF 48 89 5B 18 .H..+...a...H.[. fffff800`02c0e6e0 48 8B 5C 24 50 48 8B 6C 24 58 48 8B 74 24 60 48 H.\$PH.l$XH.t$`H fffff800`02c0e6f0 8B 7C 24 68 48 83 C4 30 41 5E 41 5D 41 5C C3 90 .|$hH..0A^A]A\.. fffff800`02c0e700 90 90 90 90 90 90 90 90 48 89 54 24 10 53 55 56 ........H.T$.SUV fffff800`02c0e710 57 41 54 41 55 41 56 41 57 48 83 EC 58 48 8B F2 WATAUAVAWH..XH.. fffff800`02c0e720 48 8B D9 48 8D 54 24 30 48 8D 0D B9 67 02 00 45 H..H.T$0H...g..E fffff800`02c0e730 8B E1 49 8B F8 4C 89 84 24 B0 00 00 00 FF 15 35 ..I..L..$......5 fffff800`02c0e740 C9 01 00 4C 8B 2D 86 67 02 00 4C 8B 35 77 67 02 ...L.-.g..L.5wg. fffff800`02c0e750 00 48 8B C6 44 8B C6 48 2B 43 20 41 81 E0 FF 0F .H..D..H+C A.... fffff800`02c0e760 00 00 BD 00 10 00 00 48 C1 E8 0C 45 89 45 2C 8B .......H...E.E,. fffff800`02c0e770 CD 8B C0 41 2B C8 41 89 4D 28 4C 8D 4C C3 30 48 ...A+.A.M(L.L.0H fffff800`02c0e780 8B C6 48 25 00 F0 FF FF 49 89 45 20 49 89 46 20 ..H%....I.E I.F fffff800`02c0e790 45 89 46 2C 41 89 4E 28 44 89 84 24 B8 00 00 00 E.F,A.N(D..$.... fffff800`02c0e7a0 4C 89 8C 24 A0 00 00 00 45 85 E4 0F 84 90 01 00 L..$....E....... fffff800`02c0e7b0 00 48 8B 5F 10 48 81 E3 00 F0 FF FF 75 3C 8B 07 .H._.H......u<.. fffff800`02c0e7c0 48 8B 0D 49 67 02 00 44 8D 4B 01 48 C1 E8 0C 4D H..Ig..D.K.H...M fffff800`02c0e7d0 8B C6 BA 48 61 6C 20 49 89 46 30 FF 15 DF C8 01 ...Hal I.F0..... fffff800`02c0e7e0 00 48 8B D8 48 85 C0 0F 84 36 01 00 00 4C 8B 8C .H..H....6...L.. fffff800`02c0e7f0 24 A0 00 00 00 41 B7 01 EB 09 41 8B C0 48 03 D8 $....A....A..H.. fffff800`02c0e800 45 32 FF 49 8B 01 33 FF 49 89 45 30 48 8B 0D C5 E2.I..3.I.E0H... fffff800`02c0e810 66 02 00 44 8B CF 4D 8B C5 BA 48 61 6C 20 FF 15 f..D..M...Hal .. fffff800`02c0e820 9C C8 01 00 48 8B F0 48 85 C0 75 24 FF C7 83 FF ....H..H..u$.... fffff800`02c0e830 06 7C D9 48 21 44 24 20 45 33 C9 41 B8 01 EF 00 .|.H!D$ E3.A.... fffff800`02c0e840 00 48 8B D5 B9 AC 00 00 00 FF 15 A1 CA 01 00 CC .H.............. fffff800`02c0e850 8B FD 2B BC 24 B8 00 00 00 44 3B E7 41 0F 42 FC ..+.$....D;.A.B. fffff800`02c0e860 80 BC 24 C0 00 00 00 01 8B EF 44 8B C7 75 0E 48 ..$.......D..u.H fffff800`02c0e870 8B D0 48 8B CB FF 15 AD 33 02 00 EB 0B 48 8B D3 ..H.....3....H.. fffff800`02c0e880 48 8B C8 E8 C8 A6 01 00 4D 8B C5 BA 48 61 6C 20 H.......M...Hal fffff800`02c0e890 48 8B CE FF 15 47 C8 01 00 41 80 FF 01 75 11 4D H....G...A...u.M fffff800`02c0e8a0 8B C6 BA 48 61 6C 20 48 8B CB FF 15 30 C8 01 00 ...Hal H....0... fffff800`02c0e8b0 48 8B 84 24 A8 00 00 00 4C 8B 8C 24 A0 00 00 00 H..$....L..$.... fffff800`02c0e8c0 44 2B E7 48 8B BC 24 B0 00 00 00 48 03 C5 BD 00 D+.H..$....H.... fffff800`02c0e8d0 10 00 00 48 8B 7F 08 49 83 C1 08 45 33 C0 44 3B ...H..I...E3.D; fffff800`02c0e8e0 E5 48 8B C8 41 8B D4 0F 47 D5 48 81 E1 00 F0 FF .H..A...G.H..... fffff800`02c0e8f0 FF 48 89 84 24 A8 00 00 00 49 89 4D 20 41 89 55 .H..$....I.M A.U fffff800`02c0e900 28 25 FF 0F 00 00 41 89 45 2C 49 89 4E 20 41 89 (%....A.E,I.N A. fffff800`02c0e910 46 2C 41 89 56 28 48 89 BC 24 B0 00 00 00 E9 75 F,A.V(H..$.....u fffff800`02c0e920 FE FF FF 48 83 64 24 20 00 45 33 C9 41 B8 00 EF ...H.d$ .E3.A... fffff800`02c0e930 00 00 48 8B D5 B9 AC 00 00 00 FF 15 B0 C9 01 00 ..H............. fffff800`02c0e940 CC 48 8D 4C 24 30 FF 15 FC C6 01 00 48 83 C4 58 .H.L$0......H..X fffff800`02c0e950 41 5F 41 5E 41 5D 41 5C 5F 5E 5D 5B C3 90 90 90 A_A^A]A\_^][.... fffff800`02c0e960 90 90 90 90 48 89 5C 24 08 48 89 6C 24 10 48 89 ....H.\$.H.l$.H. fffff800`02c0e970 74 24 18 57 41 54 41 55 48 83 EC 50 33 C0 49 8B t$.WATAUH..P3.I. fffff800`02c0e980 F9 41 8B F0 4C 8B E2 48 8B CA 49 C7 C3 00 F0 FF .A..L..H..I..... fffff800`02c0e990 FF 45 85 C0 74 10 4C 85 59 10 74 0A 48 8B 49 08 .E..t.L.Y.t.H.I. fffff800`02c0e9a0 FF C0 3B C6 72 F0 3B C6 75 09 49 83 21 00 E9 FB ..;.r.;.u.I.!... fffff800`02c0e9b0 00 00 00 65 48 8B 04 25 20 00 00 00 33 C9 44 8B ...eH..% ...3.D. fffff800`02c0e9c0 50 24 48 8B 05 F7 64 02 00 4A 8B 2C D0 4C 8D 4D P$H...d..J.,.L.M fffff800`02c0e9d0 30 45 85 C0 74 22 4C 8B C6 4C 85 5A 10 75 0F 8B 0E..t"L..L.Z.u.. fffff800`02c0e9e0 02 FF C1 48 C1 E8 0C 49 89 01 49 83 C1 08 49 83 ...H...I..I...I. fffff800`02c0e9f0 E8 01 48 8B 52 08 75 E1 33 DB C1 E1 0C 41 B5 01 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• Delphi - WndProc() in thread never called

  - by Robert Oschler

  I had code that worked fine when running in the context of the main VCL thread. This code allocated it's own WndProc() in order to handle SendMessage() calls. I am now trying to move it to a background thread because I am concerned that the SendMessage() traffic is affecting the main VCL thread adversely. So I created a worker thread with the sole purpose of allocating the WndProc() in its thread Execute() method to ensure that the WndProc() existed in the thread's execution context. The WndProc() handles the SendMessage() calls as they come in. The problem is that the worker thread's WndProc() method is never triggered. Note, doExecute() is part of a template method that is called by my TThreadExtended class which is a descendant of Delphi's TThread. TThreadExtended implements the thread Execute() method and calls doExecute() in a loop. I triple-checked and doExecute() is being called repeatedly. Also note that I call PeekMessage() right after I create the WndProc() in order to make sure that Windows creates a message queue for the thread. However something I am doing is wrong since the WndProc() method is never triggered. Here's the code below: // ========= BEGIN: CLASS - TWorkerThread ======================== constructor TWorkerThread.Create; begin FWndProcHandle := 0; inherited Create(false); end; // --------------------------------------------------------------- // This call is the thread's Execute() method. procedure TWorkerThread.doExecute; var Msg: TMsg; begin // Create the WndProc() in our thread's context. if FWndProcHandle = 0 then begin FWndProcHandle := AllocateHWND(WndProc); // Call PeekMessage() to make sure we have a window queue. PeekMessage(Msg, FWndProcHandle, 0, 0, PM_NOREMOVE); end; if Self.Terminated then begin // Get rid of the WndProc(). myDeallocateHWnd(FWndProcHandle); end; // Sleep a bit to avoid hogging the CPU. Sleep(5); end; // --------------------------------------------------------------- procedure TWorkerThread.WndProc(Var Msg: TMessage); begin // THIS CODE IS NEVER CALLED. try if Msg.Msg = WM_COPYDATA then begin // Is LParam assigned? if (Msg.LParam > 0) then begin // Yes. Treat it as a copy data structure. with PCopyDataStruct(Msg.LParam)^ do begin ... // Here is where I do my work. end; end; // if Assigned(Msg.LParam) then end; // if Msg.Msg = WM_COPYDATA then finally Msg.Result := 1; end; // try() end; // --------------------------------------------------------------- procedure TWorkerThread.myDeallocateHWnd(Wnd: HWND); var Instance: Pointer; begin Instance := Pointer(GetWindowLong(Wnd, GWL_WNDPROC)); if Instance <> @DefWindowProc then begin // Restore the default windows procedure before freeing memory. SetWindowLong(Wnd, GWL_WNDPROC, Longint(@DefWindowProc)); FreeObjectInstance(Instance); end; DestroyWindow(Wnd); end; // --------------------------------------------------------------- // ========= END : CLASS - TWorkerThread ======================== Thanks, Robert

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• Background changes by itself and procedure repeats many times until I release the mouse button

  - by Robert

  Dear community, I am a student, and I'm working on a little slots game (if the same random number comes up 3 timed, you win). I use Borland Pascal 7. I use graph to make this a bit more visual, but when I start the game my background turns from black to grey, and the other problem is that if I click the game start button, the game runs many times until I release the mouse button. How can I solve this? Here is my full program: program slots; uses mymouse,graph,crt; var gdriver,gmode,coin:integer; m:mouserec; a,b,c,coins:string; procedure gomb(x1,y1,x2,y2:integer;szoveg:string); var j,n:integer; begin setcolor(blue); rectangle(x1,y1,x2,y2); setfillstyle(1,blue); floodfill(x1+2,y1+2,blue); setcolor(0); outtextxy((x1+x2)div 2 -textwidth(szoveg) div 2 ,(y1+y2) div 2-textheight(szoveg) div 2,szoveg); end; procedure randomal(var a,b,c:string); begin randomize; STR(random(2)+1,a); STR(random(2)+1,b); STR(random(2)+1,c); end; procedure menu; begin; settextstyle(0,0,1); outtextxy(20,10,'Meno menu'); gomb(20,20,90,50,'Teglalap'); gomb(20,60,90,90,'Inditas'); gomb(20,100,90,130,'Harmadik'); gomb(20,140,90,170,'Negyedik'); end; procedure teglalap(x1,x2,y1,y2,tinta:integer); begin setcolor(tinta); rectangle(x1,x2,y1,y2); end; procedure jatek(var a,b,c:string;var coin:integer;coins:string); begin; clrscr; menu; randomal(a,b,c); if ((a=b) AND (b=c)) then coin:=coin+1 else coin:=coin-1; settextstyle(0,0,3); setbkcolor(black); outtextxy(200,20,a); outtextxy(240,20,b); outtextxy(280,20,c); STR(coin,coins); outtextxy(400,400,coins); end; procedure eger; begin; mouseinit; mouseon; menu; repeat getmouse(m); if (m.left) and (m.x20) ANd (m.x<90) and (m.y20) and (m.y<50) then teglalap(90,90,300,300,blue); if (m.left) and (m.x20) AND (m.x<90) and (m.y60) and (m.y<90) then jatek(a,b,c,coin,coins); until ((m.left) and (m.x20) ANd (m.x<140) and (m.y140) and (m.y<170)); end; begin coin:=50; gdriver:=detect; initgraph(gdriver, gmode, ''); eger; end. Thank you very much, Robert

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• Large number of soft page faults when assigning a TJpegImage to a TBitmap

  - by Robert Oschler

  I have a Delphi 6 Pro application that processes incoming jpeg frames from a streaming video server. The code works but I recently noticed that it generates a huge number of soft page faults over time. After doing some investigation, the page faults appear to be coming from one particular graphics operation. Note, the uncompressed bitmaps in question are 320 x 240 or about 300 KB in size so it's not due to the handling of large images. The number of page faults being generated isn't tolerable. Over an hour it can easily top 1000000 page faults. I created a stripped down test case that executes the code I have included below on a timer, 10 times a second. The page faults appear to happen when I try to assign the TJpegImage to a TBitmap in the GetBitmap() method. I know this because I commented out that line and the page faults do not occur. The assign() triggers a decompression operation on the part of TJpegImage as it pushes the decompressed bits into a newly created bitmap that GetBitmap() returns. When I run Microsoft's pfmon utility (page fault monitor), I get a huge number of soft page fault error lines concerning RtlFillMemoryUlong, so it appears to happen during a memory buffer fill operation. One puzzling note. The summary part of pfmon's report where it shows which DLL caused what page fault does not show any DLL names in the far left column. I tried this on another system and it happens there too. Can anyone suggest a fix or a workaround? Here's the code. Note, IReceiveBufferForClientSocket is a simple class object that holds bytes in an accumulating buffer. function GetBitmap(theJpegImage: TJpegImage): Graphics.TBitmap; begin Result := TBitmap.Create; Result.Assign(theJpegImage); end; // --------------------------------------------------------------- procedure processJpegFrame(intfReceiveBuffer: IReceiveBufferForClientSocket); var theBitmap: TBitmap; theJpegStream, theBitmapStream: TMemoryStream; theJpegImage: TJpegImage; begin theBitmap := nil; theJpegImage := TJPEGImage.Create; theJpegStream:= TMemoryStream.Create; theBitmapStream := TMemoryStream.Create; try // 2 // ************************ BEGIN JPEG FRAME PROCESSING // Load the JPEG image from the receive buffer. theJpegStream.Size := intfReceiveBuffer.numBytesInBuffer; Move(intfReceiveBuffer.bufPtr^, theJpegStream.Memory^, intfReceiveBuffer.numBytesInBuffer); theJpegImage.LoadFromStream(theJpegStream); // Convert to bitmap. theBitmap := GetBitmap(theJpegImage); finally // Free memory objects. if Assigned(theBitmap) then theBitmap.Free; if Assigned(theJpegImage) then theJpegImage.Free; if Assigned(theBitmapStream) then theBitmapStream.Free; if Assigned(theJpegStream) then theJpegStream.Free; end; // try() end; // --------------------------------------------------------------- procedure TForm1.Timer1Timer(Sender: TObject); begin processJpegFrame(FIntfReceiveBufferForClientSocket); end; // --------------------------------------------------------------- procedure TForm1.FormCreate(Sender: TObject); var S: string; begin FIntfReceiveBufferForClientSocket := TReceiveBufferForClientSocket.Create(1000000); S := loadStringFromFile('c:\test.jpg'); FIntfReceiveBufferForClientSocket.assign(S); end; // --------------------------------------------------------------- Thanks, Robert

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• push new value to mongodb inner array - mongodb/php

  - by Rizky Ramadhan

  hi i have this document in mongo: { "_id": ObjectId("4d0b9c7a8b012fe287547157"), "done_by": ["1"] } and i want to add another value to "done_by" field, so my expected document will be:: { "_id": ObjectId("4d0b9c7a8b012fe287547157"), "done_by": ["1","2","3"] } i try this: $conn = new Mongo(); $q = $conn->server->gameQueue; $id = new MongoId("4d0b9c7a8b012fe287547157"); $q->update(array("_id"=>$id),array('$push' => array("done_by","2"))); but nothing happens, anyone know how to do this?

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• python mysqldb string formatting

  - by Daniel

  How do I do this correctly: I want to do a query like this: query = """SELECT * FROM sometable order by %s %s limit %s, %s;""" conn = app_globals.pool.connection() cur = conn.cursor() cur.execute(query, (sortname, sortorder, limit1, limit2) ) results = cur.fetchall() All works fine but the order by %s %s is not putting the strings in correctly. It is putting the two substitutions in with quotes around them. So it ends up like: ORDER BY 'somecol' 'DESC' Which is wrong should be: ORDER BY somecol DESC Any help greatly appreciated!

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• Problem getting Java Streams in HP Tandem (Non-Stop)

  - by AndreaG

  Hi. We are porting a simple Java application between Tandem NonStop systems, from G-Series to H-Series. Java version is 1.5.0_02. When performing basic I/O tasks like getting output stream from or opening a client socket, we receive exceptions like java.io.IOException: Value out of range or java.net.SocketException: Value out of range ("value out of range" is Tandem native jargon for, well, quite everything I suppose). Has anybody got similar issues? i.e. I/O corruption while for example messing with JNI? I suppose there is something wrong with the system, but where might it be? Thank you. EDIT: adding snippets as requested sample snippet (a) - using Runtime.exec () (adapted) Properties envVars = new Properties(); Process p = r.exec("/bin/env"); envVars.load(p.getInputStream()); Stack trace (a): java.io.IOException: Value out of range (errno:4034) at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(FileInputStream.java:194) at java.lang.UNIXProcess$DeferredCloseInputStream.read(UNIXProcess.java:221) at java.io.BufferedInputStream.read1(BufferedInputStream.java:254) at java.io.BufferedInputStream.read(BufferedInputStream.java:313) at sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:411) at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:453) at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:183) at java.io.InputStreamReader.read(InputStreamReader.java:167) at java.io.BufferedReader.fill(BufferedReader.java:136) at java.io.BufferedReader.readLine(BufferedReader.java:299) at java.io.BufferedReader.readLine(BufferedReader.java:362) at util.Environment.getVariables(Environment.java:39) Last line fails, and output gets redirected to console (!). sample snippet (b) - using HttpURLConnection: public WorkerThread (HttpURLConnection conn, String requestData, Logger logger) { this.conn = conn; ... } public void run () { OutputStream out = conn.getOutputStream (); } Stack trace (b): java.net.SocketException: Value out of range (errno:4034) at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182) at java.net.Socket.connect(Socket.java:507) at sun.net.NetworkClient.doConnect(NetworkClient.java:155) at sun.net.www.http.HttpClient.openServer(HttpClient.java:365) at sun.net.www.http.HttpClient.openServer(HttpClient.java:477) at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:280) at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:337) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:176) at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:736) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:162) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:828) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:230) Case (a) can be avoided because it was a workaround for other issues with previous JRE version (!), but same behaviour with sockets is really nasty.

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• How to make multiple instances of RCVR, RQSTR and CLUSRCVR channels in WMQ?

  - by Dr. Xray

  This is a follow up on the question below, but it deserves another question. http://stackoverflow.com/questions/1821514/are-server-conn-and-client-conn-channels-the-only-channels-that-could-have-more-t To my understanding, a receiver (or cluster receiver) channel usually pair up with a single sender (or cluster sender) channel. How can one side being single instance while the other side being multiple instances? Thanks.

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• How to get the Output value of SP using C#

  - by karthik

  I am using the following Code to execute the SP of MySql and get the output value. I need to get the output value to my c# after SP is executed. How ? Thanks. Code : public static string GetInsertStatement(string DBName, string TblName, string ColName, string ColValue) { string strData = ""; MySqlConnection conn = new MySqlConnection(ConfigurationSettings.AppSettings["Con_Admin"]); MySqlCommand cmd = conn.CreateCommand(); try { cmd.CommandType = System.Data.CommandType.StoredProcedure; cmd.CommandText = "InsGen"; cmd.Parameters.Clear(); cmd.Parameters.Add("in_db", MySqlDbType.VarChar, 20); cmd.Parameters["in_db"].Value = DBName; cmd.Parameters.Add("in_table", MySqlDbType.VarChar, 20); cmd.Parameters["in_table"].Value = TblName; cmd.Parameters.Add("in_ColumnName", MySqlDbType.VarChar, 20); cmd.Parameters["in_ColumnName"].Value = ColName; cmd.Parameters.Add("in_ColumnValue", MySqlDbType.VarChar, 20); cmd.Parameters["in_ColumnValue"].Value = ColValue; conn.Open(); cmd.ExecuteNonQuery(); conn.Close(); } catch (System.Exception e) { Console.WriteLine(e.Message); } return strData; } SP : DELIMITER $$ DROP PROCEDURE IF EXISTS `InsGen` $$ CREATE DEFINER=`root`@`localhost` PROCEDURE `InsGen` ( in_db varchar(20), in_table varchar(20), in_ColumnName varchar(20), in_ColumnValue varchar(20) ) BEGIN declare Whrs varchar(500); declare Sels varchar(500); declare Inserts varchar(2000); declare tablename varchar(20); declare ColName varchar(20); set tablename=in_table; # Comma separated column names - used for Select select group_concat(concat('concat(\'"\',','ifnull(',column_name,','''')',',\'"\')')) INTO @Sels from information_schema.columns where table_schema=in_db and table_name=tablename; # Comma separated column names - used for Group By select group_concat('`',column_name,'`') INTO @Whrs from information_schema.columns where table_schema=in_db and table_name=tablename; #Main Select Statement for fetching comma separated table values set @Inserts=concat("select concat('insert into ", in_db,".",tablename," values(',concat_ws(',',",@Sels,"),');') from ", in_db,".",tablename, " where ", in_ColumnName, " = " , in_ColumnValue, " group by ",@Whrs, ";"); PREPARE Inserts FROM @Inserts; select Inserts; EXECUTE Inserts; END $$ DELIMITER ;

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• How can I call VC# webservice methods without ArgumentException?

  - by Zarius

  Currently, I'm trying to write a small tray application that will show the status and provide control of a server-side application exposed over webservice. The webservice only has 3 operations: start, stop and status. When I call any of these operations in code, they throw an ArgumentException citing "An item with the same key has already been added". I am compiling the webservice on Visual C# Express 2008, and .NET 3.5. The Code: private TelnetConnClient Conn { get { return new TelnetConnClient(); } } private bool Connected //call webservice operations { get { return Conn.Status(); } set { if(value) Conn.Start(); else Conn.Stop(); } } The Stacktrace: A first chance exception of type 'System.ArgumentException' occurred in mscorlib.dll at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at System.ServiceModel.TransactionFlowAttribute.ApplyBehavior(OperationDescription description, BindingParameterCollection parameters) at System.ServiceModel.TransactionFlowAttribute.System.ServiceModel.Description.IOperationBehavior.AddBindingParameters(OperationDescription description, BindingParameterCollection parameters) at System.ServiceModel.Description.DispatcherBuilder.AddBindingParameters(ServiceEndpoint endpoint, BindingParameterCollection parameters) at System.ServiceModel.Description.DispatcherBuilder.BuildProxyBehavior(ServiceEndpoint serviceEndpoint, BindingParameterCollection& parameters) at System.ServiceModel.Channels.ServiceChannelFactory.BuildChannelFactory(ServiceEndpoint serviceEndpoint) at System.ServiceModel.ChannelFactory.CreateFactory() at System.ServiceModel.ChannelFactory.OnOpening() at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) at System.ServiceModel.ChannelFactory.EnsureOpened() at System.ServiceModel.ChannelFactory`1.CreateChannel(EndpointAddress address, Uri via) at System.ServiceModel.ChannelFactory`1.CreateChannel() at System.ServiceModel.ClientBase`1.CreateChannel() at System.ServiceModel.ClientBase`1.CreateChannelInternal() at System.ServiceModel.ClientBase`1.get_Channel() at KordiaConnect.ferries.TelnetConnClient.Start() in C:\My Dropbox\Coding\RTF\KordiaConnect\KordiaConnect\Service References\ferries\Reference.cs:line 86 at coldshark.ferries.Main.set_Connected(Boolean value) in C:\My Dropbox\Coding\RTF\KordiaConnect\KordiaConnect\Main.cs:line 22 at coldshark.ferries.Main.<.ctor>b__0(Object sender, EventArgs e) in C:\My Dropbox\Coding\RTF\KordiaConnect\KordiaConnect\Main.cs:line 43 at System.Windows.Forms.NotifyIcon.OnClick(EventArgs e) at System.Windows.Forms.NotifyIcon.WmMouseUp(Message& m, MouseButtons button) at System.Windows.Forms.NotifyIcon.WndProc(Message& msg) at System.Windows.Forms.NotifyIcon.NotifyIconNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.PeekMessage(MSG& msg, HandleRef hwnd, Int32 msgMin, Int32 msgMax, Int32 remove) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run() at coldshark.ferries.Main..ctor() in C:\My Dropbox\Coding\RTF\KordiaConnect\KordiaConnect\Main.cs:line 55 I can just call the webservice from the web interface, but this application will give me a handy status notification icon, and I'd really love to know why the out-of-the-box auto-generated code fails for no particular reason.

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• ActiveMQ 5.2.0 + REST + HTTP POST = java.lang.OutOfMemoryError

  - by Bruce Loth

  First off, I am a newbie when it comes to JMS & ActiveMQ. I have been looking into a messaging solution to serve as middleware for a message producer that will insert XML messages into a queue via HTTP POST. The producer is an existing system written in C++ that cannot be modified (so Java and the C++ API are out). Using the "demo" examples and some trial and error, I have cobbled together a working example of what I want to do (on a windows box). The web.xml I configured in a test directory under "webapps" specifies that the HTTP POST messages received from the producer are to be handled by the MessageServlet. I added a line for the text app in "activemq.xml" ('ow' is the test app dir): I created a test script to "insert" messages into the queue which works well. The problem I am running into is that it as I continue to insert messages via REST/HTTP POST, the memory consumption and thread count used by ActiveMQ continues to rise (It happens when I have timely consumers as well as slow or non-existent consumers). When memory consumption gets around 250MB's and the thread count exceeds 5000 (as shown in windows task manager), ActiveMQ crashes and I see this in the log: Exception in thread "ActiveMQ Transport Initiator: vm://localhost#3564" java.lang.OutOfMemoryError: unable to create new native thread It is as if Jetty is spawning a new thread to handle each HTTP POST and the thread never dies. I did look at this page: http://activemq.apache.org/javalangoutofmemory.html and tried but that didn't fix the problem (although I didn't fully understand the implications of the change either). Does anyone have any ideas? Thanks! Bruce Loth PS - I included the "test message producer" python script below for what it is worth. I created batches of 100 messages and continued to run the script manually from the command line while watching the memory consumption and thread count of ActiveMQ in task manager. def foo(): import httplib, urllib body = "<?xml version='1.0' encoding='UTF-8'?>\n \ <ROOT>\n \ [snip: xml deleted to save space] </ROOT>" headers = {"content-type": "text/xml", "content-length": str(len(body))} conn = httplib.HTTPConnection("127.0.0.1:8161") conn.request("POST", "/ow/message/RDRCP_Inbox?type=queue", body, headers) response = conn.getresponse() print response.status, response.reason data = response.read() conn.close() ## end method definition ## Begin test code count = 0; while(count < 100): # Test with batches of 100 msgs count += 1 foo()

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• Newbie's problems with MySQL and php

  - by Mirage81

  I'm a real newbie with php and MySQL. Now I'm working on the following code which should search the database for eg. all the Lennons living in Liverpool. 1) How should I modify "get.php" to get the text "no results" to appear if there are no search results. 2) How should I modify "index.php" to get the option values (city and lastname) straight from the database instead of having to type them one by one? 3) Am I using mysql_real_escape_string the right way? 4) Any other mistakes in the code? index.php: <form action="get.php" method="post"> <p> <select name="city"> <option value="Birmingham">Birmingham</option> <option value="Liverpool">Liverpool</option> <option value="London">London</option> </select> </p> <p> <select name="lastname"> <option value="Lennon">Lennon</option> <option value="McCartney">McCartney</option> <option value="Osbourne">Osbourne</option> </select> </p> <p> <input value="Search" type="submit"> </p> </form> get.php: <?php $city = $_POST['city']; $lastname = $_POST['lastname']; $conn = mysql_connect('localhost', 'user', 'password'); mysql_select_db("database", $conn) or die("connection failed"); $query = "SELECT * FROM users WHERE city = '$city' AND lastname = '$lastname'"; $result = mysql_query($query, $conn); $city = mysql_real_escape_string($_POST['city']); $lastname = mysql_real_escape_string($_POST['lastname']); echo $rowcount; while ($row = mysql_fetch_row($result)) { if ($rowcount == '0') echo 'no results'; else { echo '<b>City: </b>'.htmlspecialchars($row[0]).'<br />'; echo '<b>Last name: </b>'.htmlspecialchars($row[1]).'<br />'; echo '<b>Information: </b>'.htmlspecialchars($row[2]); } } mysql_close($conn);

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• delete row from selected gridview and database

  - by user175084

  i am trying to delete a row from the gridview and database... It should be deleted if a delte linkbutton is clicked in the gridview.. I am gettin the row index as follows: protected void LinkButton1_Click(object sender, EventArgs e) { LinkButton btn = (LinkButton)sender; GridViewRow row = (GridViewRow)btn.NamingContainer; if (row != null) { LinkButton LinkButton1 = (LinkButton)sender; // Get reference to the row that hold the button GridViewRow gvr = (GridViewRow)LinkButton1.NamingContainer; // Get row index from the row int rowIndex = gvr.RowIndex; string str = rowIndex.ToString(); //string str = GridView1.DataKeys[row.RowIndex].Value.ToString(); RemoveData(str); //call the delete method } } now i want to delete it... so i am having problems with this code.. i get an error Must declare the scalar variable "@original_MachineGroupName"... any suggestions private void RemoveData(string item) { SqlConnection conn = new SqlConnection(@"Data Source=JAGMIT-PC\SQLEXPRESS; Initial Catalog=SumooHAgentDB;Integrated Security=True"); string sql = "DELETE FROM [MachineGroups] WHERE [MachineGroupID] = @original_MachineGroupID; SqlCommand cmd = new SqlCommand(sql, conn); cmd.Parameters.AddWithValue("@original_MachineGroupID", item); conn.Open(); cmd.ExecuteNonQuery(); conn.Close(); } Blockquote <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:SumooHAgentDBConnectionString %>" SelectCommand="SELECT MachineGroups.MachineGroupID, MachineGroups.MachineGroupName, MachineGroups.MachineGroupDesc, MachineGroups.TimeAdded, MachineGroups.CanBeDeleted, COUNT(Machines.MachineName) AS Expr1, DATENAME(month, (MachineGroups.TimeAdded - 599266080000000000) / 864000000000) + SPACE(1) + DATENAME(d, (MachineGroups.TimeAdded - 599266080000000000) / 864000000000) + ', ' + DATENAME(year, (MachineGroups.TimeAdded - 599266080000000000) / 864000000000) AS Expr2 FROM MachineGroups FULL OUTER JOIN Machines ON Machines.MachineGroupID = MachineGroups.MachineGroupID GROUP BY MachineGroups.MachineGroupID, MachineGroups.MachineGroupName, MachineGroups.MachineGroupDesc, MachineGroups.TimeAdded, MachineGroups.CanBeDeleted" DeleteCommand="DELETE FROM [MachineGroups] WHERE [MachineGroupID] =@original_MachineGroupID" > <DeleteParameters> <asp:Parameter Name="@original_MachineGroupID" Type="Int16" /> <asp:Parameter Name="@original_MachineGroupName" Type="String" /> <asp:Parameter Name="@original_MachineGroupDesc" Type="String" /> <asp:Parameter Name="@original_CanBeDeleted" Type="Boolean" /> <asp:Parameter Name="@original_TimeAdded" Type="Int64" /> </DeleteParameters> </asp:SqlDataSource> I still get an error : Must declare the scalar variable "@original_MachineGroupID"

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• GridView in ASP.NET 2.0

  - by Subho

  How can I populate an editable Grid with data from different tables from MSSQL Server'05 writing a code behind function??? I have used: Dim conn As New SqlConnection(conn_web) Dim objCmd As New SqlDataAdapter(sql, conn) Dim oDS As New DataSet objCmd.Fill(oDS, "TAB") Dim dt As DataTable = oDS.Tables(0) Dim rowCount As Integer = dt.Rows.Count Dim dr As DataRow = dt.NewRow() If rowCount = 0 Then e.DataSource = Nothing e.DataBind() e.Focus() Else e.DataSource = dt e.DataBind() End If

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• [Zend Framework] How to automatically set and atribute to controller

  - by rasouza

  Maybe the question is not self-explanatory, so I will explain it through. The deal is: I got the variable $conn in the bootstrap class file. I'd like to make it global for every controller so that I just have to call $this-conn in the controller action scope in order to access the data inside. How would I do it? Thx

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• Help with IF THEN breaking when comparing results from MYSQL query.

  - by roydukkey

  I'm have a problem with an invite system. The if statement seems to break. It shows the message "Fail" but the UPDATE statement still executes. Why do both the THEN and the ELSE excute? $dbConn = new dbConn(); // Check if POST user_username and user_hash are matching and valid; both are hidden for fields $sql = "SELECT user_username " . "FROM table_users " . "WHERE user_id=".mysql_real_escape_string($_POST["user_id"])." " . "AND user_hash='".mysql_real_escape_string($_POST["user_hash"])."' " . "AND user_enabled=0;"; $objUser = $dbConn->query($sql); // If result contains 1 or more rows if( mysql_num_rows($objUser) != NULL ){ $objUser = mysql_fetch_assoc($objUser); $ssnUser->login( $objUser["user_username"] ); $sql = "UPDATE table_users SET " . "user_enabled=1, " . "user_first_name='".mysql_real_escape_string($_POST["user_first_name"])."', " . "user_last_name='".mysql_real_escape_string($_POST["user_last_name"])."', " . "user_password='".mysql_real_escape_string( md5($_POST["user_password"]) )."' " . "WHERE user_id=".mysql_real_escape_string($_POST["user_id"]).";"; $dbConn->query($sql); echo "Success"; header( "Refresh: 5; url=/account/?action=domains" ); } else { echo "Fail"; } This dbConn Class is as follows: class dbConn{ var $username = "xxxx_admin"; var $password = "xxxxxxxx"; var $server = "localhost"; var $database = "xxxx"; var $objConn; function __construct(){ $conn = mysql_connect( $this->server, $this->username, $this->password, true ); if( !$conn ){ die("Could not connect: ".mysql_error() ); } else { $this->objConn = $conn; } unset($conn); } function __destruct(){ mysql_close( $this->objConn ); unset( $this ); } function query( $query, $db = false ){ mysql_select_db( $db != false ? $db : $this->database, $this->objConn ); $result = mysql_query( $query ); unset($query,$db); return $result; } }

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• is TransactionScope usable for sql operations, is it doing the same thing as Sqltransaction ?

  - by Omu

  can I do something like this: using (var scope = new TransactionScope()) { using (var conn = new SqlConnection(Cs)) { using (var cmd = conn.CreateCommand()) { cmd.CommandType = CommandType.StoredProcedure; ... scope.complete(); } } } is going to be the same thing as using the SqlTransaction with catch(){rollback;}

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• Issues querying Access '07 database in C#

  - by Kye

  I'm doing a .NET unit as part of my studies. I've only just started, with a lecturer that as kinda failed to give me the most solid foundation with .NET, so excuse the noobishness. I'm making a pretty simple and generic database-driven application. I'm using C# and I'm accessing a Microsoft Access 2007 database. I've put the database-ish stuff in its own class with the methods just spitting out OleDbDataAdapters that I use for committing. I feed any methods which preform a query a DataSet object from the main program, which is where I'm keeping the data (multiple tables in the db). I've made a very generic private method that I use to perform SQL SELECT queries and have some public methods wrapping that method to get products, orders.etc (it's a generic retail database). The generic method uses a separate Connect method to actually make the connection, and it is as follows: private static OleDbConnection Connect() { OleDbConnection conn = new OleDbConnection( @"Provider=Microsoft.ACE.OLEDB.12.0; Data Source=C:\Temp\db.accdb"); return conn; } The generic method is as follows: private static OleDbDataAdapter GenericSelectQuery( DataSet ds, string namedTable, String selectString) { OleDbCommand oleCommand = new OleDbCommand(); OleDbConnection conn = Connect(); oleCommand.CommandText = selectString; oleCommand.Connection = conn; oleCommand.CommandType = CommandType.Text; OleDbDataAdapter adapter = new OleDbDataAdapter(); adapter.SelectCommand = oleCommand; adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey; adapter.Fill(ds, namedTable); return adapter; } The wrapper methods just pass along the DataSet that they received from the main program, the namedtable string is the name of the table in the dataset, and you pass in the query you wish to make. It doesn't matter which query I give it (even something simple like SELECT * FROM TableName) I still get thrown an OleDbException, stating that there was en error with the FROM clause of the query. I've just resorted to building the queries with Access, but there's still no use. Obviously there's something wrong with my code, which wouldn't actually surprise me. Here are some wrapper methods I'm using. public static OleDbDataAdapter GetOrderLines(DataSet ds) { OleDbDataAdapter adapter = GenericSelectQuery( ds, "orderlines", "SELECT OrderLine.* FROM OrderLine;"); return adapter; } They all look the same, it's just the SQL that changes.

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• [Errno 10061] No connection could be made because the target machine actively refused it

  - by user551717

  I've tried to connect to my local machine every time I try and run my program. I am a nub, so it's probably a simple mistake somewhere. def connect(self): self.conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.conn.connect((self.host,self.port)) That is the code causing the error. The host and port are defined. Why is it giving me this error report? [Errno 10061] No connection could be made because the target machine actively refused it

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