Bug 22376 - VS freezes when using Console.WriteLine in a Parallel.For loop in debug configuration.
Summary: VS freezes when using Console.WriteLine in a Parallel.For loop in debug confi...
Status: RESOLVED FIXED
Alias: None
Product: Visual Studio Extensions
Classification: Xamarin
Component: Debugger ()
Version: 3.3
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2014-08-26 15:54 UTC by Jon Goldberger [MSFT]
Modified: 2016-05-10 17:04 UTC (History)
7 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:


Attachments
Test Project (4.96 MB, application/zip)
2014-08-26 15:54 UTC, Jon Goldberger [MSFT]
Details
Visual Studio Logs (460.05 KB, application/zip)
2014-08-26 16:09 UTC, Jon Goldberger [MSFT]
Details
MTB Server logs (61.09 KB, application/zip)
2014-08-26 16:10 UTC, Jon Goldberger [MSFT]
Details


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Related Links:
Status:
RESOLVED FIXED

Comment 1 Jon Goldberger [MSFT] 2014-08-26 16:02:12 UTC
In Visual Studio, when deploying an iOS app in Debug configuration, Visual Studio freezes while running a Parallel.For loop with a Console.WriteLine statement in it. 

To reproduce:

1. Open test project in Visual Studio ( I tested in VS 2013 )
2. Set iOS project as the startup project.
3. Deploy to simulator or device.
4. Note that for Parallel.For loop runs without error (Console.WriteLine statement is commented out) and app launches on sim/device and UI is displayed
5. Stop debug session. 
6. Uncomment line 51, the Console.WriteLine statement in the Parallel.For loop
7.  Deploy to simulator or device.

Expected result: Parallel.For loop will run without error and the app will launch and display UI.
Actual Result: Visual Studio freezes. Have to kill it with Task Manager. App launches but no UI is displayed. 


---------------
VS2013 version info:
Microsoft Visual Studio Ultimate 2013
Version 12.0.30501.00 Update 2
Microsoft .NET Framework
Version 4.5.51641

Installed Version: Ultimate

Architecture and Modeling Tools   06181-004-0451031-02209
Microsoft Architecture and Modeling Tools
    
UML® and Unified Modeling Language™ are trademarks or registered trademarks of the Object Management Group, Inc. in the United States and other countries.

LightSwitch for Visual Studio 2013   06181-004-0451031-02209
Microsoft LightSwitch for Visual Studio 2013

Office Developer Tools - May 2014 Update ENU   06181-004-0451031-02209
Microsoft Office Developer Tools for Visual Studio 2013 - May 2014 Update ENU

Team Explorer for Visual Studio 2013   06181-004-0451031-02209
Microsoft Team Explorer for Visual Studio 2013

Visual Basic 2013   06181-004-0451031-02209
Microsoft Visual Basic 2013

Visual C# 2013   06181-004-0451031-02209
Microsoft Visual C# 2013

Visual C++ 2013   06181-004-0451031-02209
Microsoft Visual C++ 2013

Visual F# 2013   06181-004-0451031-02209
Microsoft Visual F# 2013

Visual Studio 2013 Code Analysis Spell Checker   06181-004-0451031-02209
Microsoft® Visual Studio® 2013 Code Analysis Spell Checker

Portions of International CorrectSpell™ spelling correction system © 1993 by Lernout & Hauspie Speech Products N.V. All rights reserved.

The American Heritage® Dictionary of the English Language, Third Edition Copyright © 1992 Houghton Mifflin Company. Electronic version licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

Windows Phone SDK 8.0 - ENU   06181-004-0451031-02209
Windows Phone SDK 8.0 - ENU

ASP.NET and Web Tools   2013.2.50425
Microsoft Web Developer Tools contains the following components:
Support for creating and opening ASP.NET web projects
Browser Link: A communication channel between Visual Studio and browsers
Editor extensions for HTML, CSS, and JavaScript
Page Inspector: Inspection tool for ASP.NET web projects
Scaffolding: A framework for building and running code generators
Server Explorer extensions for Windows Azure Web Sites
Web publishing: Extensions for publishing ASP.NET web projects to hosting providers, on-premises servers, or Windows Azure

ASP.NET Web Frameworks and Tools 2012.2   4.1.21001.0
For additional information, visit http://go.microsoft.com/fwlink/?LinkID=309563

ASP.NET Web Frameworks and Tools 2013   5.1.20409.0
For additional information, visit http://www.asp.net/

Common Azure Tools   1.1
Provides common services for use by Azure Mobile Services and Windows Azure Tools.

Microsoft Advertising SDK for Windows Phone   
Microsoft Advertising SDK for Windows Phone
Build 

NuGet Package Manager   2.8.50313.46
NuGet Package Manager in Visual Studio. For more information about NuGet, visit http://docs.nuget.org/.

PreEmptive Analytics Visualizer   1.2
Microsoft Visual Studio extension to visualize aggregated summaries from the PreEmptive Analytics product.

RemObjects Data Abstract   8.0.81.1131
RemObjects Data Abstract
Copyright 2002-2014 RemObjects Software, LLC. All rights reserved.
http://www.remobjects.com/da

RemObjects Everwood   4.3.57.563
RemObjects Everwood
Copyright 2003-2014 RemObjects Software, LLC. All rights reserved.
http://www.remobjects.com/everwood

RemObjects SDK   8.0.81.1131
RemObjects SDK
Copyright 2002-2012 RemObjects Software, LLC. All rights reserved.
http://www.remobjects.com/ro

SAPReferenceManager   1.0
Manages References to Shared Projects

SQL Server Data Tools   12.0.40706.0
Microsoft SQL Server Data Tools

Windows Azure Mobile Services Tools   1.1
Windows Azure Mobile Services Tools

Windows Azure Tools   2.3
Windows Azure Tools for Microsoft Visual Studio 2013 - v2.3.20320.1602

Windows Phone 8.1 SDK Integration   1.0
This package integrates the tools for the Windows Phone 8.1 SDK into the menus and controls of Visual Studio.

Workflow Manager Tools 1.0   1.0
This package contains the necessary Visual Studio integration components for Workflow Manager.

Xamarin   3.3.47.0 (0b2a123923812a88ed3091909478dbe9e0111f00)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android

-------------------------
XS Version info (Mac)
=== Xamarin Studio ===

Version 5.2.1 (build 1)
Installation UUID: 2dc9022f-f9a8-424f-8284-bf224cbbfde0
Runtime:
	Mono 3.6.0 ((no/f540f8a)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 306000039

=== Apple Developer Tools ===

Xcode 5.1.1 (5085)
Build 5B1008

=== Xamarin.Mac ===

Version: 1.8.1.6

=== Xamarin.Android ===

Version: 4.14.0 (Business Edition)
Android SDK: /Users/apple/Library/Developer/Xamarin/android-sdk-mac_x86
	Supported Android versions:
		2.2   (API level 8)
		2.3   (API level 10)
		3.1   (API level 12)
		3.2   (API level 13)
		4.0   (API level 14)
		4.0.3 (API level 15)
		4.1   (API level 16)
		4.2   (API level 17)
		4.3   (API level 18)
		4.4   (API level 19)
Java SDK: /usr
java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)

=== Xamarin.iOS ===

Version: 7.2.6.28 (Business Edition)
Hash: 606f31a
Branch: 
Build date: 2014-08-01 15:27:48-0400

=== Build Information ===

Release ID: 502010001
Git revision: d06832ce9807d6be24aca225457e8b37c7669f6f
Build date: 2014-08-07 12:10:47-04
Xamarin addins: 1de032531be4cecf2f39dbee3b87aac78204058c

=== Operating System ===

Mac OS X 10.9.4
Darwin Jonathans-MacBook-Pro.local 13.3.0 Darwin Kernel Version 13.3.0
    Tue Jun  3 21:27:35 PDT 2014
    root:xnu-2422.110.17~1/RELEASE_X86_64 x86_64
Comment 3 Jon Goldberger [MSFT] 2014-08-26 16:09:27 UTC
Created attachment 7809 [details]
Visual Studio Logs
Comment 4 Jon Goldberger [MSFT] 2014-08-26 16:10:05 UTC
Created attachment 7810 [details]
MTB Server logs
Comment 9 Tajinder Singh 2014-08-27 10:00:07 UTC
I have checked this issue and observed that when line 51 is commented and user deploy application on build host, VS gets hanged. This is the screencast for the same: http://screencast.com/t/69IVnn6o

VS Trace Logs: https://gist.github.com/saurabh360/59e14b514a691201c77c
Build host log: https://gist.github.com/saurabh360/155e5ac31212d9643ccc

VS 2013
XVS 3.5.55
X.iOS 7.0.4.108
Comment 10 Joaquin Jares 2015-10-06 17:01:15 UTC
This part of the code went through a complete redo recently and this bug looks like it's fixed. Marking as resolved for verification.