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• Overriding MSBuildExtensionsPath in the MSBuild task is flaky

  - by Stuart Lange

  This is already cross-posted at MS Connect: https://connect.microsoft.com/VisualStudio/feedback/details/560451 I am attempting to override the property $(MSBuildExtensionsPath) when building a solution containing a C# web application project via msbuild. I am doing this because a web application csproj file imports the file "$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v9.0\WebApplications\Microsoft.WebApplication.targets". This file is installed by Visual Studio to the standard $(MSBuildExtensionsPath) location (C:\Program Files\MSBuild). I would like to eliminate the dependency on this file being installed on the machine (I would like to keep my build servers as "clean" as possible). In order to do this, I would like to include the Microsoft.WebApplication.targets in source control with my project, and then override $(MSBuildExtensionsPath) so that the csproj will import this included version of Microsoft.WebApplication.targets. This approach allows me to remove the dependency without requiring me to manually modify the web application csproj file. This scheme works fine when I build my solution file from the command line, supplying the custom value of $(MSBuildExtensionsPath) at the command line to msbuild via the /p flag. However, if I attempt to build the solution using the MSBuild task in a custom msbuild project file (overriding MSBuildExtensionsPath using the "Properties" attribute), it fails because the web app csproj file is attempting to import the Microsoft.WebApplication.targets from the "standard" Microsoft.WebApplication.targets location (C:\Program Files\MSBuild). Notably, if I run msbuild using the "Exec" task in my custom project file, it works. Even more notably, the FIRST time I run the build using the "MSBuild" task AFTER I have run the build using the "EXEC" task (or directly from the command line), the build works. Has anyone seen behavior like this before? Am I crazy? Is anyone aware of the root cause of this problem, a possible workaround, or whether this is a legitimate bug in MSBuild?

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• Parallelism in .NET – Part 20, Using Task with Existing APIs

  - by Reed

  Although the Task class provides a huge amount of flexibility for handling asynchronous actions, the .NET Framework still contains a large number of APIs that are based on the previous asynchronous programming model.  While Task and Task<T> provide a much nicer syntax as well as extending the flexibility, allowing features such as continuations based on multiple tasks, the existing APIs don’t directly support this workflow. There is a method in the TaskFactory class which can be used to adapt the existing APIs to the new Task class: TaskFactory.FromAsync.  This method provides a way to convert from the BeginOperation/EndOperation method pair syntax common through .NET Framework directly to a Task<T> containing the results of the operation in the task’s Result parameter. While this method does exist, it unfortunately comes at a cost – the method overloads are far from simple to decipher, and the resulting code is not always as easily understood as newer code based directly on the Task class.  For example, a single call to handle WebRequest.BeginGetResponse/EndGetReponse, one of the easiest “pairs” of methods to use, looks like the following: var task = Task.Factory.FromAsync<WebResponse>( request.BeginGetResponse, request.EndGetResponse, null); .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } The compiler is unfortunately unable to infer the correct type, and, as a result, the WebReponse must be explicitly mentioned in the method call.  As a result, I typically recommend wrapping this into an extension method to ease use.  For example, I would place the above in an extension method like: public static class WebRequestExtensions { public static Task<WebResponse> GetReponseAsync(this WebRequest request) { return Task.Factory.FromAsync<WebResponse>( request.BeginGetResponse, request.EndGetResponse, null); } } This dramatically simplifies usage.  For example, if we wanted to asynchronously check to see if this blog supported XHTML 1.0, and report that in a text box to the user, we could do: var webRequest = WebRequest.Create("http://www.reedcopsey.com"); webRequest.GetReponseAsync().ContinueWith(t => { using (var sr = new StreamReader(t.Result.GetResponseStream())) { string str = sr.ReadLine();; this.textBox1.Text = string.Format("Page at {0} supports XHTML 1.0: {1}", t.Result.ResponseUri, str.Contains("XHTML 1.0")); } }, TaskScheduler.FromCurrentSynchronizationContext());   By using a continuation with a TaskScheduler based on the current synchronization context, we can keep this request asynchronous, check based on the first line of the response string, and report the results back on our UI directly.

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• Killing a deadlocked Task in .NET 4 TPL

  - by Dan Bryant

  I'd like to start using the Task Parallel Library, as this is the recommended framework going forward for performing asynchronous operations. One thing I haven't been able to find is any means of forcible Abort, such as what Thread.Abort provides. My particular concern is that I schedule tasks running code that I don't wish to completely trust. In particular, I can't be sure this untrusted code won't deadlock and therefore I can't be certain if a Task I schedule using this code will ever complete. I want to stay away from true AppDomain isolation (due to the overhead and complexity of marshaling), but I also don't want to leave a Task thread hanging around, deadlocked. Is there a way to do this in TPL?

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• Problem with autocommit in ANT SQL task

  - by Alex Stamper

  I have an SQL script and want to apply it witn ANT task. This script clears out schema, creates new tables and views. The ANT defined task as follows: <sql driver="com.mysql.jdbc.Driver" url="jdbc:mysql://host:3306/smth" userid="smth" password="smth" expandProperties="false" autocommit="true" src="all.sql" > </sql> When this task launches, it shows in log that tables are cleared and created. But when it tries to create first view, it fails with: Failed to execute: CREATE VIEW component... AS SELECT component_raw.id AS MySQLSyntaxErrorException: Table 'component_raw' doesn't exist I have no idea why it fails here. Running this all.sql from MySQL query browser gives no errors. When I launched ANT with -v option, I didn't see any "COMMIT" messages.. Please, help to resolve the problem.

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• Using SalesForce's Web Service to create and set the type of a Task

  - by Alan Williamson

  I am successfully creating a Task using the SalesForce API SOAP API through Java. However, my problem is that I can't seem to set the Type of it. They all default to "Call" but I really want them to be "Email". Can someone point me in the direction of where I can do this? I think it is to do with RecordTypeMapping, but i am somewhat confused as to how to use this in my Java code to look up the particular one for Task type. I feel I have got so close with this. I have the correct WSDL that is giving me the extra method on the Task.java class, but no matter what I pass in, it dies. This doesn't seem to be a huge ask, yet i am perplexed as to which dots to join to get it to work Any help would be appreciated. thanks

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• How does Windows Task Scheduler in Win7 recognize a failed task?

  - by lakeman

  Hello, I am working with Windows 7 and I have an application that returns zero (0x0) when successful and one (0x1) on error situations. I have scheduled this app using Windows Task Scheduler. I have checked the option boxes "If the task fails, restart every" and "Attempt to restart up to:". I thought that a non-zero return code from the app would be enough to trigger the task to be restarted after the given interval. But nothing happens. Any ideas what could be the issue? I tried to google it but did not found anything relevant.

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• Looking for personal scheduling software / todo list with rather particular requirements

  - by Cthulhu

  I've been scouring the web for a couple of (my boss') hours, looking for a piece of software that can organize my tasks in two ways. First, I have a list of bullet points / todo items I can do at any given time. Think of stuff like solve issue X, ask X about Y, write documentation about Z, etcetera. Second, I have a number of running projects I'd like to organize better, as in schedule for a certain part of a day of the week. Ideally (I think), my day would be organized as 50% spent on projects and 50% on the other small things. Now, I don't like most calendar applications (such as Outlook & friends), their UI is too 'official', not really easy to move stuff around (in my experience). I don't like most todo lists either, too static and things. I like new, fast and hip software. I've looked at GTD versions of Tiddlywiki, and I like mGSD for one particular feature. You can make lists of tasks and basically give them one of three statusses - Now (nothing required, you can do it right away), Waiting (you need someone or something before you can work on this), or the most gratifying of all, Done. I like that feature because it's a simple todo list, but indicates more accurately the things you can do right now and the things you depend on someone else for to do. Anyways, that's just a small aspect of that program - most of the other things in there I can't find a particularly good use for. If there's something like that (maybe something that works even snappier, cleaner UI), combined with an easy to use bit of scheduling software (optionally separated into two applications, but preferrably not), I think I'd like that. (Besides something like that, I also use several instances of Trac to monitor tasks and bugs and things for the various clients and projects I have to serve, and TaskCoach to monitor the amount of time I spend on each task / each client. An easy / low-maintenance time tracking software would be neat too) Of course, the software has to be free to use. I don't like shareware, trials, limited software and the like. I could develop my own too, but I'm lazy like that and there's a dozen other projects I'd like to do in my free time (neither of which I actually do). Edit: I like David Seah's printable CEO stuff, if something like that (with some video game / instant achievement / gratification) exists in software, it'd be awesome.

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• Does RVM "failover" to another ruby instance on error?

  - by JohnMetta

  Have a strange problem in that I have a Rake task that seems to be using multiple versions of Ruby. When one fails, it seems to try another one. Details MacBook running 10.6.5 rvm 1.1.0 Rubies: 1.8.7-p302, ree-1.8.7-2010.02, ruby-1.9.2-p0 Rake 0.8.7 Gem 1.3.7 Veewee (provisioning Virtual Machines using Opcode.com, Vagrant and Chef) I'm not entirely sure the specific details of the error matter, but since it might be an issue with Veewee itself. So, what I'm trying to do is build a new box base on a veewee definition. The command fails with an error about a missing method- but what's interesting is how it fails. Errors I managed to figure out that if I only have one Ruby installed with RVM, it just fails. If I have more than one Ruby install, it fails at the same place, but execution seems to continue in another interpreter. Here are two different clipped console outputs. I've clipped them for size. The full outputs of each error are available as a gist. One Ruby version installed Here is the command run when I only have a single version of Ruby (1.8.7) available in RVM boudica:veewee john$ rvm rake build['mettabox'] --trace rvm 1.1.0 by Wayne E. Seguin ([email protected]) [http://rvm.beginrescueend.com/] (in /Users/john/Work/veewee) ** Invoke build (first_time) ** Execute build … creating new harddrive rake aborted! undefined method `max_vdi_size' for #<VirtualBox::SystemProperties:0x102d6af80> /Users/john/.rvm/gems/ruby-1.8.7-p302/gems/virtualbox-0.8.3/lib/virtualbox/abstract_model/dirty.rb:172:in `method_missing' <------ stacktraces cut ----------> /Users/john/.rvm/gems/ruby-1.8.7-p302/gems/rake-0.8.7/bin/rake:31 /Users/john/.rvm/gems/ruby-1.8.7-p302@global/bin/rake:19:in `load' /Users/john/.rvm/gems/ruby-1.8.7-p302@global/bin/rake:19 Multiple Ruby Versions Here is the same command run with three versions of Ruby available in RVM. Prior to doing this, I used "rvm use 1.8.7." Again, I don't know how important the details of the specific errors are- what's interesting to me is that there are three separate errors- each with it's own stacktrace- and each in a different Ruby interpreter. Look at the bottom of each stacktrace and you'll see that they are all sourced from different interpreter locations- First ree-1.8.7, then ruby-1.8.7, then ruby-1.9.2: boudica:veewee john$ rvm rake build['mettabox'] --trace rvm 1.1.0 by Wayne E. Seguin ([email protected]) [http://rvm.beginrescueend.com/] (in /Users/john/Work/veewee) ** Invoke build (first_time) ** Execute build … creating new harddrive rake aborted! undefined method `max_vdi_size' for #<VirtualBox::SystemProperties:0x1059dd608> /Users/john/.rvm/gems/ree-1.8.7-2010.02/gems/virtualbox-0.8.3/lib/virtualbox/abstract_model/dirty.rb:172:in `method_missing' … /Users/john/.rvm/gems/ree-1.8.7-2010.02/gems/rake-0.8.7/bin/rake:31 /Users/john/.rvm/gems/ree-1.8.7-2010.02@global/bin/rake:19:in `load' /Users/john/.rvm/gems/ree-1.8.7-2010.02@global/bin/rake:19 (in /Users/john/Work/veewee) ** Invoke build (first_time) ** Execute build isofile ubuntu-10.04.1-server-amd64.iso is available ["a1b857f92eecaf9f0a31ecfc39dee906", "30b5c6fdddbfe7b397fe506400be698d"] [] Last good state: -1 Current step: 0 last good state -1 destroying machine+disks (re-)executing step 0-initial-a1b857f92eecaf9f0a31ecfc39dee906 VBoxManage: error: Machine settings file '/Users/john/VirtualBox VMs/mettabox/mettabox.vbox' already exists VBoxManage: error: Details: code VBOX_E_FILE_ERROR (0x80bb0004), component Machine, interface IMachine, callee nsISupports Context: "CreateMachine(bstrSettingsFile.raw(), name.raw(), osTypeId.raw(), Guid(id).toUtf16().raw(), FALSE , machine.asOutParam())" at line 247 of file VBoxManageMisc.cpp rake aborted! undefined method `memory_size=' for nil:NilClass /Users/john/Work/veewee/lib/veewee/session.rb:303:in `create_vm' /Users/john/Work/veewee/lib/veewee/session.rb:166:in `build' /Users/john/Work/veewee/lib/veewee/session.rb:560:in `transaction' /Users/john/Work/veewee/lib/veewee/session.rb:163:in `build' /Users/john/Work/veewee/Rakefile:87 /Users/john/.rvm/gems/ruby-1.8.7-p302/gems/rake-0.8.7/lib/rake.rb:636:in `call' /Users/john/.rvm/gems/ruby-1.8.7-p302/gems/rake-0.8.7/lib/rake.rb:636:in `execute' /Users/john/.rvm/gems/ruby-1.8.7-p302/gems/rake-0.8.7/lib/rake.rb:631:in `each' … /Users/john/.rvm/gems/ruby-1.8.7-p302/gems/rake-0.8.7/bin/rake:31 /Users/john/.rvm/gems/ruby-1.8.7-p302@global/bin/rake:19:in `load' /Users/john/.rvm/gems/ruby-1.8.7-p302@global/bin/rake:19 (in /Users/john/Work/veewee) ** Invoke build (first_time) ** Execute build isofile ubuntu-10.04.1-server-amd64.iso is available ["a9c4ab3257e1da3479c984eae9905c2a", "30b5c6fdddbfe7b397fe506400be698d"] [] Last good state: -1 Current step: 0 last good state -1 (re-)executing step 0-initial-a9c4ab3257e1da3479c984eae9905c2a VBoxManage: error: Machine settings file '/Users/john/VirtualBox VMs/mettabox/mettabox.vbox' already exists VBoxManage: error: Details: code VBOX_E_FILE_ERROR (0x80bb0004), component Machine, interface IMachine, callee nsISupports Context: "CreateMachine(bstrSettingsFile.raw(), name.raw(), osTypeId.raw(), Guid(id).toUtf16().raw(), FALSE , machine.asOutParam())" at line 247 of file VBoxManageMisc.cpp rake aborted! undefined method `memory_size=' for nil:NilClass /Users/john/Work/veewee/lib/veewee/session.rb:303:in `create_vm' /Users/john/Work/veewee/lib/veewee/session.rb:166:in `block in build' /Users/john/Work/veewee/lib/veewee/session.rb:560:in `transaction' /Users/john/Work/veewee/lib/veewee/session.rb:163:in `build' /Users/john/Work/veewee/Rakefile:87:in `block in <top (required)>' /Users/john/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rake.rb:634:in `call' /Users/john/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rake.rb:634:in `block in execute' … /Users/john/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rake.rb:2013:in `top_level' /Users/john/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/rake.rb:1992:in `run' /Users/john/.rvm/rubies/ruby-1.9.2-p0/bin/rake:35:in `<main>' It isn't until we reach the last installed version of Ruby that execution halts. Discussion Does anyone have any idea what's going on here? Has anyone seen this "failover"-like behavior before? It seems strange to me that the first exception would not halt execution as it did with one interpreter, but I wonder if there are things happening when RVM is installed that we Ruby developers are not considering.

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• What is your bug/task tracking tool?

  - by Ilya

  This is a placeholder for overviews of bug/task tracking systems. What i want to do here is: List all tools used in the industry (please provide a link to the tool discussed) Gather opinions on each tool (please back up your opinion with facts i.e provide advantages and disadvantages) Please put each tool in separate answer and please make it community owned wiki to give an option to add/edit to as many people as possible. Related posts: What is your tool for version control (FAQ) Free/Cheap Task/Bug Management software What bug tracking software do you use?

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• Sharepoint edit task from outlook on windows7

  - by Alex

  I have sharepoint approval workflow on Moss2007. Windows XP users are able to approve the task from their outlook. But in windows 7, outlook would not open the task edit form at all and no error message either. is there anything need to be turned off/on in windows 7 outlook in order to approve an item from their inbox?

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• VS2010 Build Definitions - Creating a MSBuild task for JS/CSS Minification

  - by RPM1984

  Hi guys, We've recently upgraded from VS2008 - VS2010 (and hence upgrading from Web Deployment Project to proper deployment templates). Alas - my Workflow skills arent quite up to scratch. Previously, we used a MSBuild task to execute the Yahoo YUI Javascript/CSS compression module to minify/compress javascript and css files. Anyone manage to accomplish this task with Visual Studio 2010 / TFS 2010 ?

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• Why does the task name contain "now / 30"?

  - by Jaroslav Záruba

  In the video/PDF from "Data pipelines with Google App Engine" Brett puts "now / 30" into the task name noting that he will explain the reason later, but somehow he never does. :) http://www.youtube.com/watch?v=zSDC_TU7rtc#t=41m35 task_name = '%s-%d-%d' % (sum_name, int(now / 30), index) Do you have any idea about the reason? Does it have anything to do with the 7 day period in which one can't re-use task names? URL to the session page: http://tinyurl.com/3523mej

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• how to cancel an awaiting task c#

  - by user1748906

  I am trying to cancel a task awaiting for network IO using CancellationTokenSource, but I have to wait until TcpClient connects: try { while (true) { token.Token.ThrowIfCancellationRequested(); Thread.Sleep(int.MaxValue); //simulating a TcpListener waiting for request } } any ideas ? Secondly, is it OK to start each client in a separate task ?

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• GAE Task Queue oddness

  - by b3nw

  I have been testing the taskqueue with mixed success. Currently I am using the default queue, in default settings ect ect.... I have a test url setup which inserts about 8 tasks into the queue. With short order, all 8 are completed properly. So far so good. The problem comes up when I re-load that url twice under say a minute. Now watching the task queue, all the tasks are added properly, but only the first batch execute it seems. But the "Run in Last Minute" # shows the right number of tasks being run.... The request logs tell a different story. They show only the first set of 8 running, but all task creation urls working successfully. The oddness of this is that if I wait say a minute between the task creation url requests, it will work fine. Oddly enough changing the bucket_size or execution speed does not seem to help. Only the first batch are executed. I have also reduced the number of requests all the way down to 2, and still found only the first 2 execute. Any others added display the same issues as above. Any suggestions? Thanks

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• Windows Task Scheduler: IAction.QueryInterface() returns an error I cannot find a definition for

  - by Sascha

  Hello I am attempting to schedule a task (to open an .exe at a specific time) using C++ win32. But at one specific point I am getting an error, I have searched & searched to try & find the definition of this error but I cannot find it? Do you know what this error means: Hexadecimal: 80004003 Decimal: 2147500035 I wont post the whole function because its rather long (unless you may need it to determine the error context?). The code I am using (that causes the error) is the following: // QI for the executable task pointer. hr = action -> QueryInterface( IID_IExecAction, (void**) execAction ); action -> Release(); if( FAILED(hr) ) { printf("QueryInterface call failed for IExecAction: %x %X %u \n", hr, hr, hr ); rootFolder -> Release(); task -> Release(); CoUninitialize(); return false; } The output is: QueryInterface call failed for IExecAction: 80004003 80004003 2147500035

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• Cannot implicity convert type void to System.Threading.Tasks.Task<bool>

  - by sagesky36

  I have a WCF Service that contains the following method. All the methods in the service are asynchrounous and compile just fine. public async Task<Boolean> ValidateRegistrationAsync(String strUserName) { try { using (YeagerTechEntities DbContext = new YeagerTechEntities()) { DbContext.Configuration.ProxyCreationEnabled = false; DbContext.Database.Connection.Open(); var reg = await DbContext.aspnet_Users.FirstOrDefaultAsync(f => f.UserName == strUserName); if (reg != null) return true; else return false; } } catch (Exception) { throw; } } My client application was set to access the WCF service with the check box for the "Allow generation of asynchronous operations" and it generated the proxy just fine. I am receiving the above subject error when trying to call this WCF service method from my client with the following code. Mind you, I know what the error message means, but this is my first time trying to call an asynchronous task in a WCF service from a client. Task<Boolean> blnMbrShip = db.ValidateRegistrationAsync(FormsAuthentication.Decrypt(cn.Value).Name); What do I need to do to properly call the method so the design time compile error disappears? Thanks so much in advance...

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• environment change in rake task

  - by Mellon

  I am developing Rails v2.3 app with MySQL database and mysql2 gem. I faced a weird situation which is about changing the environment in rake task. (all my setting and configurations for environment and database are correct, no problem for that.) Here is my simple story : I have a rake task like following: namespace :db do task :do_something => :environment do #1. run under 'development' environment my_helper.run_under_development_env #2. change to 'custom' environment RAILS_ENV='custom' Rake::Task['db:create'] Rake::Task['db:migrate'] #3. change back to 'development' environment RAILS_ENV='development' #4. But it still run in 'customer' environment, why? my_helper.run_under_development_env end end The rake task is quite simple, what it does is: 1. Firstly, run a method from my_helper under "development" environment 2. Then, change to "custom" environment and run db:create and db:migrate until now, everything is fine, the environment did change to "custom" 3. Then, change it back again to "development" environment 4. run helper method again under "development" environment But, though I have changed the environment back to "development" in step 3, the last method still run in "custom" environment, why? and how to get rid of it? --- P.S. --- I have also checked a post with the similar situation here, and tried to use the solution there like (in step 2): ActiveRecord::Base.establish_connection('custom') Rake::Task['db:create'] Rake::Task['db:migrate'] to change the database connection instead of changing environment but, the db:create and db:migrate will still run under "development" database, though the linked post said it should run for "custom" database... weird

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• How do you change the default collation of MySql for rake db:create:all in rails?

  - by Matt

  In my rails app I am running rake db:create:all in order to create the databases and I am prompted that the collations do not match. Is there a way to change the default MySQL collation? If not what is the best way around this? Thanks

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• How can I get a scheduled task to run for a user regardless of which computer the user is logged onto?

  - by Ernst

  I've got a scheduled task that needs to run for a user at a specific time. However, the user sometimes logs onto one machine, the next day onto another, then next week onto yet another. At some pint during the day, the user might have to log onto another machine. How do I get the scheduled task to run regardless of which computer the user is using? I could of course create the task on all computers, but that seems a bit overkill. Running a script on log on (or a group policy) to create the task doesn't seem a good method either. Any ideas? Basically I want the scheduled task to be defined on the user instead of on the computer. If in the end I need to choose between the two options above, which is best?

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• can server 2008's task scheduler run a php file?

  - by rg89

  Hello. I have a server 2008 64 bit machine with php5 via fastcgi installed. I want to run a .php script every day at 3 AM. I set up a task and "Last Run Result" says "%1 is not a valid Win32 application" The event properties describe more failure: "Task Scheduler failed to launch action "D:\InetPub\tools\something\build.php" in instance "{88cc01f4-9554-4b8f-9836-34d806337d7f}" of task "\Something". Additional Data: Error Value: 2147942593." Task Category: Action failed to start Is it possible to run scripts using the task scheduler? If not, how should I go about automating the execution of a php script? Thanks

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• windows 2008 task scheduled batch file runs forever

  - by phill

  I currently have the following batch running in windows 2008 task scheduler. mysql --user=bobdb --password=letmein --force --named-commands --local-infile=1 --execute="insert into bobdb.attendees (name) values ('bob');insert into bobdb.attendees (name) values ('rick');" It executes nicely when I run it from a command prompt and it executes when I force it to run and it executes when it is scheduled to run. My issue is when it does run, the task scheduler seems to keep it running until it hits a timeout. Is there a command to tell it when it is finished running in the batch file so it doesn't throw a timeout error? thanks in advance

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• "Mem Usage" higher than "VM Size" in WinXP Task Manager

  - by Frederick

  In my Windows XP Task Manager, some processes display a higher value in the Mem Usage column than the VMSize. My Firefox instance, for example shows 111544 K as mem usage and 100576 K as VMSize. According to the help file of Task Manager Mem Usage is the working set of the process and VMSize is the committed memory in the Virtual address space. My question is, if the number of committed pages for a process is A and the number of pages in physical memory for the same process is B, shouldn't it always be B = A? Isn't the number of pages in physical memory per process a subset of the committed pages? Or is this something to do with sharing of memory among processes? Please explain. (Perhaps my definition of 'Working Set' is off the mark). Thanks.

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• 'foreach' failing when using Parallel Task Library

  - by Chris Arnold

  The following code creates the correct number of files, but every file contains the contents of the first list. Can anyone spot what I've done wrong please? private IList<List<string>> GetLists() { // Code omitted for brevity... } private void DoSomethingInParallel() { var lists = GetLists(); var tasks = new List<Task>(); var factory = new TaskFactory(); foreach (var list in lists) { tasks.Add(factory.StartNew(() => { WriteListToLogFile(list); })); } Task.WaitAll(tasks.ToArray()); }

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• What is TombstonedTaskError from App Engine's Task Queue?

  - by dbr

  That does the TombstonedTaskError mean? It is being raised while trying to add a task to the queue, from a cron-job: Traceback (most recent call last): File "/base/python_lib/versions/1/google/appengine/ext/webapp/__init__.py", line 501, in __call__ handler.get(*groups) File "/base/data/home/apps/.../tasks.py", line 132, in get ).add(queue_name = 'userfeedcheck') File "/base/python_lib/versions/1/google/appengine/api/labs/taskqueue/taskqueue.py", line 495, in add return Queue(queue_name).add(self) File "/base/python_lib/versions/1/google/appengine/api/labs/taskqueue/taskqueue.py", line 563, in add self.__TranslateError(e) File "/base/python_lib/versions/1/google/appengine/api/labs/taskqueue/taskqueue.py", line 619, in __TranslateError raise TombstonedTaskError(error.error_detail) TombstonedTaskError Searching the documentation only has the following to say: exception TombstonedTaskError(InvalidTaskError) Task has been tombstoned. ..which isn't particularly helpful. I couldn't find anything useful in the App Engine code either..

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• Change only Revision number in AssemblyInfo.cs with msbuild FileUpdate task

  - by Divya mohan Singh

  I need to change only the revision number of an AssemblyInfo.cs file. The version number is in the format Major.Minor.Build.Revision e.g. 1.4.6.0. Currently I change the version with the FileUpdate task (from the MSBuild Community Tasks Project) and the following regex: <FileUpdate Files="@(AssemblyResult)" Regex='(\[\s*assembly:\s*AssemblyVersion\(\s*"[^\.]+\.[^\.]+)\.([^\.]+)(\.)([^\.]+)("\)\s*\])' ReplacementText='[assembly: AssemblyVersion("$(AssemblyMajorNumber).$(AssemblyMinorNumber).$(AssemblyBuildNumber).$(Revision)")]' /> Now I need to update only the revision number and leave major,minor and build unchanged. So, is there any task to do this? Or can it be done with a regex? What would be the regular expression then?

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