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  • System.Threading.Timer keep reference to it.

    - by Daniel Bryars
    According to [http://msdn.microsoft.com/en-us/library/system.threading.timer.aspx][1] you need to keep a reference to a System.Threading.Timer to prevent it from being disposed. I've got a method like this: private void Delay(Action action, Int32 ms) { if (ms <= 0) { action(); } System.Threading.Timer timer = new System.Threading.Timer( (o) => action(), null, ms, System.Threading.Timeout.Infinite); } Which I don't think keeps a reference to the timer, I've not seen any problems so far, but that's probably because the delay periods used have been pretty small. Is the code above wrong? And if it is, how to I keep a reference to the Timer? I'm thinking something like this might work: class timerstate { internal volatile System.Threading.Timer Timer; }; private void Delay2(Action action, Int32 ms) { if (ms <= 0) { action(); } timerstate state = new timerstate(); lock (state) { state.Timer = new System.Threading.Timer( (o) => { lock (o) { action(); ((timerstate)o).Timer.Dispose(); } }, state, ms, System.Threading.Timeout.Infinite); } The locking business is so I can get the timer into the timerstate class before the delegate gets invoked. It all looks a little clunky to me. Perhaps I should regard the chance of the timer firing before it's finished constructing and assigned to the property in the timerstace instance as negligible and leave the locking out.

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  • SecurityNegotiationException in WCF Service Hosted on IIS

    - by Ram
    Hi, I have hosted a WCF service on IIS. The configuration file is as follows <?xml version="1.0"?> <!-- Note: As an alternative to hand editing this file you can use the web admin tool to configure settings for your application. Use the Website->Asp.Net Configuration option in Visual Studio. A full list of settings and comments can be found in machine.config.comments usually located in \Windows\Microsoft.Net\Framework\v2.x\Config --> <configuration> <configSections> <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/> <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere" /> <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> <section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> </sectionGroup> </sectionGroup> </sectionGroup> </configSections> <appSettings/> <connectionStrings/> <system.web> <!-- Set compilation debug="true" to insert debugging symbols into the compiled page. Because this affects performance, set this value to true only during development. --> <compilation debug="false"> <assemblies> <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/> <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> </assemblies> </compilation> <!-- The <authentication> section enables configuration of the security authentication mode used by ASP.NET to identify an incoming user. --> <authentication mode="Windows" /> <!-- The <customErrors> section enables configuration of what to do if/when an unhandled error occurs during the execution of a request. Specifically, it enables developers to configure html error pages to be displayed in place of a error stack trace. <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm"> <error statusCode="403" redirect="NoAccess.htm" /> <error statusCode="404" redirect="FileNotFound.htm" /> </customErrors> --> <pages> <controls> <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> </controls> </pages> <httpHandlers> <remove verb="*" path="*.asmx"/> <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/> </httpHandlers> <httpModules> <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> </httpModules> </system.web> <system.codedom> <compilers> <compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <providerOption name="CompilerVersion" value="v3.5"/> <providerOption name="WarnAsError" value="false"/> </compiler> </compilers> </system.codedom> <system.web.extensions> <scripting> <webServices> <!-- Uncomment this section to enable the authentication service. Include requireSSL="true" if appropriate. <authenticationService enabled="true" requireSSL = "true|false"/> --> <!-- Uncomment these lines to enable the profile service, and to choose the profile properties that can be retrieved and modified in ASP.NET AJAX applications. <profileService enabled="true" readAccessProperties="propertyname1,propertyname2" writeAccessProperties="propertyname1,propertyname2" /> --> <!-- Uncomment this section to enable the role service. <roleService enabled="true"/> --> </webServices> <!-- <scriptResourceHandler enableCompression="true" enableCaching="true" /> --> </scripting> </system.web.extensions> <!-- The system.webServer section is required for running ASP.NET AJAX under Internet Information Services 7.0. It is not necessary for previous version of IIS. --> <system.webServer> <validation validateIntegratedModeConfiguration="false"/> <modules> <add name="ScriptModule" preCondition="integratedMode" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> </modules> <handlers> <remove name="WebServiceHandlerFactory-Integrated"/> <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </handlers> </system.webServer> <system.serviceModel> <services> <service name="IISTest2.Service1" behaviorConfiguration="IISTest2.Service1Behavior"> <!-- Service Endpoints --> <endpoint address="" binding="wsHttpBinding" contract="IISTest2.IService1"> <!-- Upon deployment, the following identity element should be removed or replaced to reflect the identity under which the deployed service runs. If removed, WCF will infer an appropriate identity automatically. --> <identity> <dns value="localhost"/> </identity> </endpoint> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> </services> <behaviors> <serviceBehaviors> <behavior name="IISTest2.Service1Behavior"> <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --> <serviceMetadata httpGetEnabled="true"/> <!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information --> <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration> The client configuration file is as follows <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <bindings> <wsHttpBinding> <binding name="WSHttpBinding_IService1" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" /> <security mode="Message"> <transport clientCredentialType="Windows" proxyCredentialType="None" realm="" /> <message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" establishSecurityContext="true" /> </security> </binding> </wsHttpBinding> </bindings> <client> <endpoint address="http://yyy.zzz.xxx.net/IISTest2/Service1.svc" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IService1" contract="ServTest.IService1" name="WSHttpBinding_IService1"> <identity> <dns value="localhost" /> </identity> </endpoint> </client> </system.serviceModel> </configuration> When I tried to access the service from client application, I got SecurityNegotiationException and details are Secure channel cannot be opened because security negotiation with the remote endpoint has failed. This may be due to absent or incorrectly specified EndpointIdentity in the EndpointAddress used to create the channel. Please verify the EndpointIdentity specified or implied by the EndpointAddress correctly identifies the remote endpoint. If I host the service on ASP .NET Dev server, it work well but if I host on IIS above mentioned error occurs. Thanks, Ram

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  • Issues with Server 2012 using DFSR running on Hyper-V 2012

    - by Bryan
    We have a number of Server 2012 systems, all of which run virtualised on Hyper-V 2012 server. We are having problems with two such virtual instances, both of which are used as file servers, whereby they occasionally stop responding to requests to serve files to clients. After logging on to the server, attempts to shut it down gracefully fail (no error, it just fails to acknowledge a shutdown request). Recovery is a case of power cycling the server(s) from the Hyper-V console. These two servers don't server a large number of users (one serves no more than 6 users, and the other serves around 20 users), they are in the same domain, but on different physical hardware (and at different sites). They don't lock up at the same time. They both use DFSR to replicate a fairly large amount of data between themselves (200GB) over ADSL connections, this is working fine, and we have been using DFSR to do this on the previous two generations of server OS we have used (Server 2008 R2 and Server 2003 - both of which were physical installs however). Today, when one of the servers crashed, I noticed an entry in the event log, which looked similar to the following: Log Name: Application Source: ESENT Date: 27/11/2012 10:25:55 Event ID: 533 Task Category: General Level: Warning Keywords: Classic User: N/A Computer: HAL-FS-01.example.com Description: DFSRs (1500) \\.\E:\System Volume Information\DFSR\database_C8CC_101_CC00_EC0E\ dfsr.db: A request to write to the file "\\.\E:\System Volume Information\ DFSR\database_C8CC_101_CC00_EC0E\fsr.log" at offset 4423680 (0x0000000000438000) for 4096 (0x00001000) bytes has not completed for 36 second(s). This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem. When the server started up again, I went to find the event log entry to investigate further and found that the event log entry was no longer there (I assume it was in memory but failed to write to disk before the server was powered off, for the reason mentioned in the message). I found the above message by searching back further in the event log. Both of these virtual servers have their E: volumes fully allocated as opposed to dynamically expanding, and there are no other issues on any of the other virtual servers (which include server 2012, server 2008 R2 and Ubuntu 12.04 x64). There are no signs of IO, memory or CPU starvation on the host systems. I've used performance counters on the affected virtual servers to monitor memory usage (including non paged pool usage), as well as CPU and network utilisation, and none of these show any signs of trouble when the issue arises. I would have thought our configuration isn't that uncommon, so I'm wondering if anyone else has seen this, and managed to resolve the problem?

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  • Quantifying the effects of partition mis-alignment

    - by Matt
    I'm experiencing some significant performance issues on an NFS server. I've been reading up a bit on partition alignment, and I think I have my partitions mis-aligned. I can't find anything that tells me how to actually quantify the effects of mis-aligned partitions. Some of the general information I found suggests the performance penalty can be quite high (upwards of 60%) and others say it's negligible. What I want to do is determine if partition alignment is a factor in this server's performance problems or not; and if so, to what degree? So I'll put my info out here, and hopefully the community can confirm if my partitions are indeed mis-aligned, and if so, help me put a number to what the performance cost is. Server is a Dell R510 with dual E5620 CPUs and 8 GB RAM. There are eight 15k 2.5” 600 GB drives (Seagate ST3600057SS) configured in hardware RAID-6 with a single hot spare. RAID controller is a Dell PERC H700 w/512MB cache (Linux sees this as a LSI MegaSAS 9260). OS is CentOS 5.6, home directory partition is ext3, with options “rw,data=journal,usrquota”. I have the HW RAID configured to present two virtual disks to the OS: /dev/sda for the OS (boot, root and swap partitions), and /dev/sdb for a big NFS share: [root@lnxutil1 ~]# parted -s /dev/sda unit s print Model: DELL PERC H700 (scsi) Disk /dev/sda: 134217599s Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 63s 465884s 465822s primary ext2 boot 2 465885s 134207009s 133741125s primary lvm [root@lnxutil1 ~]# parted -s /dev/sdb unit s print Model: DELL PERC H700 (scsi) Disk /dev/sdb: 5720768639s Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 34s 5720768606s 5720768573s lvm Edit 1 Using the cfq IO scheduler (default for CentOS 5.6): # cat /sys/block/sd{a,b}/queue/scheduler noop anticipatory deadline [cfq] noop anticipatory deadline [cfq] Chunk size is the same as strip size, right? If so, then 64kB: # /opt/MegaCli -LDInfo -Lall -aALL -NoLog Adapter #0 Number of Virtual Disks: 2 Virtual Disk: 0 (target id: 0) Name:os RAID Level: Primary-6, Secondary-0, RAID Level Qualifier-3 Size:65535MB State: Optimal Stripe Size: 64kB Number Of Drives:7 Span Depth:1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, Direct, No Write Cache if Bad BBU Access Policy: Read/Write Disk Cache Policy: Disk's Default Number of Spans: 1 Span: 0 - Number of PDs: 7 ... physical disk info removed for brevity ... Virtual Disk: 1 (target id: 1) Name:share RAID Level: Primary-6, Secondary-0, RAID Level Qualifier-3 Size:2793344MB State: Optimal Stripe Size: 64kB Number Of Drives:7 Span Depth:1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, Direct, No Write Cache if Bad BBU Access Policy: Read/Write Disk Cache Policy: Disk's Default Number of Spans: 1 Span: 0 - Number of PDs: 7 If it's not obvious, virtual disk 0 corresponds to /dev/sda, for the OS; virtual disk 1 is /dev/sdb (the exported home directory tree).

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  • High I/O latency with software RAID, LUKS encrypted and LVM partitioned KVM setup

    - by aef
    I found out a performance problems with a Mumble server, which I described in a previous question are caused by an I/O latency problem of unknown origin. As I have no idea what is causing this and how to further debug it, I'm asking for your ideas on the topic. I'm running a Hetzner EX4S root server as KVM hypervisor. The server is running Debian Wheezy Beta 4 and KVM virtualisation is utilized through LibVirt. The server has two different 3TB hard drives as one of the hard drives was replaced after S.M.A.R.T. errors were reported. The first hard disk is a Seagate Barracuda XT ST33000651AS (512 bytes logical, 4096 bytes physical sector size), the other one a Seagate Barracuda 7200.14 (AF) ST3000DM001-9YN166 (512 bytes logical and physical sector size). There are two Linux software RAID1 devices. One for the unencrypted boot partition and one as container for the encrypted rest, using both hard drives. Inside the latter RAID device lies an AES encrypted LUKS container. Inside the LUKS container there is a LVM physical volume. The hypervisor's VFS is split on three logical volumes on the described LVM physical volume: one for /, one for /home and one for swap. Here is a diagram of the block device configuration stack: sda (Physical HDD) - md0 (RAID1) - md1 (RAID1) sdb (Physical HDD) - md0 (RAID1) - md1 (RAID1) md0 (Boot RAID) - ext4 (/boot) md1 (Data RAID) - LUKS container - LVM Physical volume - LVM volume hypervisor-root - LVM volume hypervisor-home - LVM volume hypervisor-swap - … (Virtual machine volumes) The guest systems (virtual machines) are mostly running Debian Wheezy Beta 4 too. We have one additional Ubuntu Precise instance. They get their block devices from the LVM physical volume, too. The volumes are accessed through Virtio drivers in native writethrough mode. The IO scheduler (elevator) on both the hypervisor and the guest system is set to deadline instead of the default cfs as that happened to be the most performant setup according to our bonnie++ test series. The I/O latency problem is experienced not only inside the guest systems but is also affecting services running on the hypervisor system itself. The setup seems complex, but I'm sure that not the basic structure causes the latency problems, as my previous server ran four years with almost the same basic setup, without any of the performance problems. On the old setup the following things were different: Debian Lenny was the OS for both hypervisor and almost all guests Xen software virtualisation (therefore no Virtio, also) no LibVirt management Different hard drives, each 1.5TB in size (one of them was a Seagate Barracuda 7200.11 ST31500341AS, the other one I can't tell anymore) We had no IPv6 connectivity Neither in the hypervisor nor in guests we had noticable I/O latency problems According the the datasheets, the current hard drives and the one of the old machine have an average latency of 4.12ms.

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  • How can I extract the original image stream from a System.Drawing.Bitmap object?

    - by skolima
    I am embedding images into my assembly using .resx files. Upon runtime, I need to save the images into standalone files, restoring the original content. How can I extract the original file stream from an System.Drawing.Bitmap instance? I know I can create a stream using Bitmap.Save(), but this transcodes (and in effect - inflates) the images, even when saving a PNG back as PNG. Or perhaps my mistake is reading them from Resource as Bitmap in the first place?

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  • How to check the system is Windows 7 or Windows Server 2008 RC in Wix Installer?

    - by Ray
    Hi there, I am working on a windows installer project. And now I only want the software only can be installed on Windows 7 or Windows Server 2008 RC system, I tried to use this: <Condition Message='Windows Server 2008 R2 or Windows 7 is required'>(VersionNT = 600 AND ServicePackLevel = 1) OR VersionNT = 601 </Condition> but it can still be installed on Windows Vista. Please help! Thank you!

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  • How to check the system is Windows 7 or Windows Server 2008 R2 in Wix Installer?

    - by Ray
    Hi there, I am working on a windows installer project. And now I only want the software only can be installed on Windows 7 or Windows Server 2008 R2 system, I tried to use this: <Condition Message='Windows Server 2008 R2 or Windows 7 is required'>(VersionNT = 600 AND ServicePackLevel = 1) OR VersionNT = 601 </Condition> but it can still be installed on Windows Vista. Please help! Thank you!

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  • How to prevent leaving an Icon in System Tray on exit?

    - by Malfist
    My program puts an icon in the system tray because the user may minimize to it. However, if the application crashes, or I stop the app from running in VS it leaves the icon in it until I hover over it with the mouse. Sometimes I'll look down there and there will be 10 or so icons. I can I make sure the icon goes away?

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  • What difference between Web Apps & Descktop app shoud one keep in mind to model the system right?

    - by simple
    Sometimes it seems like some architectural techniques are not for the Web application I am building and then I just go and code =(, Though I really want to make a habit to architect system before moving to the code, as when I just code I endup writing some useless components which then I rewrite =(, So can you just point out some differences between web apps and desktop ones ?

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  • Software Architecture: Quality Attributes

    Quality is what all software engineers should strive for when building a new system or adding new functionality. Dictonary.com ambiguously defines quality as a grade of excellence. Unfortunately, quality must be defined within the context of a situation in that each engineer must extract quality attributes from a project’s requirements. Because quality is defined by project requirements the meaning of quality is constantly changing base on the project. Software architecture factors that indicate the relevance and effectiveness The relevance and effectiveness of architecture can vary based on the context in which it was conceived and the quality attributes that are required to meet. Typically when evaluating architecture for a specific system regarding relevance and effectiveness the following questions should be asked.   Architectural relevance and effectiveness questions: Does the architectural concept meet the needs of the system for which it was designed? Out of the competing architectures for a system, which one is the most suitable? If we look at the first question regarding meeting the needs of a system for which it was designed. A system that answers yes to this question must meet all of its quality goals. This means that it consistently meets or exceeds performance goals for the system. In addition, the system meets all the other required system attributers based on the systems requirements. The suitability of a system is based on several factors. In order for a project to be suitable the necessary resources must be available to complete the task. Standard Project Resources: Money Trained Staff Time Life cycle factors that affect the system and design The development life cycle used on a project can drastically affect how a system’s architecture is created as well as influence its design. In the case of using the software development life cycle (SDLC) each phase must be completed before the next can begin.  This waterfall approach does not allow for changes in a system’s architecture after that phase is completed. This can lead to major system issues when the architecture for the system is not as optimal because of missed quality attributes. This can occur when a project has poor requirements and makes misguided architectural decisions to name a few examples. Once the architectural phase is complete the concepts established in this phase must move on to the design phase that is bound to use the concepts and guidelines defined in the previous phase regardless of any missing quality attributes needed for the project. If any issues arise during this phase regarding the selected architectural concepts they cannot be corrected during the current project. This directly has an effect on the design of a system because the proper qualities required for the project where not used when the architectural concepts were approved. When this is identified nothing can be done to fix the architectural issues and system design must use the existing architectural concepts regardless of its missing quality properties because the architectural concepts for the project cannot be altered. The decisions made in the design phase then preceded to fall down to the implementation phase where the actual system is coded based on the approved architectural concepts established in the architecture phase regardless of its architectural quality. Conversely projects using more of an iterative or agile methodology to implement a system has more flexibility to correct architectural decisions based on missing quality attributes. This is due to each phase of the SDLC is executed more than once so any issues identified in architecture of a system can be corrected in the next architectural phase. Subsequently the corresponding changes will then be adjusted in the following design phase so that when the project is completed the optimal architectural and design decision are applied to the solution. Architecture factors that indicate functional suitability Systems that have function shortcomings do not have the proper functionality based on the project’s driving quality attributes. What this means in English is that the system does not live up to what is required of it by the stakeholders as identified by the missing quality attributes and requirements. One way to prevent functional shortcomings is to test the project’s architecture, design, and implementation against the project’s driving quality attributes to ensure that none of the attributes were missed in any of the phases. Another way to ensure a system has functional suitability is to certify that all its requirements are fully articulated so that there is no chance for misconceptions or misinterpretations by all stakeholders. This will help prevent any issues regarding interpreting the system requirements during the initial architectural concept phase, design phase and implementation phase. Consider the applicability of other architectural models When considering an architectural model for a project is also important to consider other alternative architectural models to ensure that the model that is selected will meet the systems required functionality and high quality attributes. Recently I can remember talking about a project that I was working on and a coworker suggested a different architectural approach that I had never considered. This new model will allow for the same functionally that is offered by the existing model but will allow for a higher quality project because it fulfills more quality attributes. It is always important to seek alternatives prior to committing to an architectural model. Factors used to identify high-risk components A high risk component can be defined as a component that fulfills 2 or more quality attributes for a system. An example of this can be seen in a web application that utilizes a remote database. One high-risk component in this system is the TCIP component because it allows for HTTP connections to handle by a web server and as well as allows for the server to also connect to a remote database server so that it can import data into the system. This component allows for the assurance of data quality attribute and the accessibility quality attribute because the system is available on the network. If for some reason the TCIP component was to fail the web application would fail on two quality attributes accessibility and data assurance in that the web site is not accessible and data cannot be update as needed. Summary As stated previously, quality is what all software engineers should strive for when building a new system or adding new functionality. The quality of a system can be directly determined by how closely it is implemented when compared to its desired quality attributes. One way to insure a higher quality system is to enforce that all project requirements are fully articulated so that no assumptions or misunderstandings can be made by any of the stakeholders. By doing this a system has a better chance of becoming a high quality system based on its quality attributes

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  • How do developers verify that software requirement changes in one system do not violate a requirement of downstream software systems?

    - by Peter Smith
    In my work, I do requirements gathering, analysis and design of business solutions in addition to coding. There are multiple software systems and packages, and developers are expected to work on any of them, instead of being assigned to make changes to only 1 system or just a few systems. How developers ensure they have captured all of the necessary requirements and resolved any conflicting requirements? An example of this type of scenario: Bob the developer is asked to modify the problem ticket system for a hypothetical utility repair business. They contract with a local utility company to provide this service. The old system provides a mechanism for an external customer to create a ticket indicating a problem with utility service at a particular address. There is a scheduling system and an invoicing system that is dependent on this data. Bob's new project is to modify the ticket placement system to allow for multiple addresses to entered by a landlord or other end customer with multiple properties. The invoicing system bills per ticket, but should be modified to bill per address. What practices would help Bob discover that the invoicing system needs to be changed as well? How might Bob discover what other systems in his company might need to be changed in order to support the new changes\business model? Let's say there is a documented specification for each system involved, but there are many systems and Bob is not familiar with all of them. End of example. We're often in this scenario, and we do have design reviews but management places ultimate responsibility for any defects (business process or software process) on the developer who is doing the design and the work. Some organizations seem to be better at this than others. How do they manage to detect and solve conflicting or incomplete requirements across software systems? We currently have a lot of tribal knowledge and just a few developers who understand the entire business and software chain. This seems highly ineffective and leads to problems at the requirements level.

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  • Console Hangs when Attempting to Deploy Software Updates

    - by JCardenas
    When in the SCCM 2012 console under Software Updates, I click Deploy on a Software Update Group and the console hangs indefinitely. It just stops; I click away and back and Windows does not recognize that the console has stopped responding. I end up having to kill the console through Task Manager. I have left the console for hours and it never becomes responsive again. I have tried removing and reinstalling the SUP, without success. Server reboots do not help, either. The issue with the console occurs both on my desktop, and directly on the site server itself. Any ideas? I've checked server logs and found nothing that would be indicative of a problem. Update: I managed to find something from the SMSAdminUI.log file: [1, PID:820][10/12/2012 08:59:26] :Disposed ResultObject was passed to update delegate, ignoring but refresh operation may not complete correctly [14, PID:820][10/12/2012 13:53:57] :System.Management.ManagementException\r\nNot found \r\n at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObject.Initialize(Boolean getObject) at System.Management.ManagementBaseObject.get_wbemObject() at System.Management.PropertyData.RefreshPropertyInfo() at System.Management.PropertyDataCollection.get_Item(String propertyName) at System.Management.ManagementBaseObject.GetPropertyValue(String propertyName) at System.Management.ManagementBaseObject.get_Item(String propertyName) at Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine.WqlConnectionManager.GetInstance(String objectPath)\r\nManagementException details: instance of __ExtendedStatus { Operation = "GetObject"; ParameterInfo = "SMS_PackageToContent.ContentID=16794374,PackageID=\"CA100065\""; ProviderName = "WinMgmt"; }; \r\n [14, PID:820][10/12/2012 13:53:57] :(SMS_PackageToContent.ContentID=16794374,PackageID='CA100065') does not exist or its IsContentValid returns false. We will (re)download this content. [14, PID:820][10/12/2012 13:54:01] :Successfully validated or downloaded update fcadb0ea-90ce-4aad-bc95-192450f05211! [14, PID:820][10/12/2012 13:54:02] :System.Management.ManagementException\r\nNot found \r\n at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObject.Initialize(Boolean getObject) at System.Management.ManagementBaseObject.get_wbemObject() at System.Management.PropertyData.RefreshPropertyInfo() at System.Management.PropertyDataCollection.get_Item(String propertyName) at System.Management.ManagementBaseObject.GetPropertyValue(String propertyName) at System.Management.ManagementBaseObject.get_Item(String propertyName) at Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine.WqlConnectionManager.GetInstance(String objectPath)\r\nManagementException details: instance of __ExtendedStatus { Operation = "GetObject"; ParameterInfo = "SMS_PackageToContent.ContentID=16787459,PackageID=\"CA100065\""; ProviderName = "WinMgmt"; }; \r\n [14, PID:820][10/12/2012 13:54:02] :(SMS_PackageToContent.ContentID=16787459,PackageID='CA100065') does not exist or its IsContentValid returns false. We will (re)download this content. [14, PID:820][10/12/2012 13:54:03] :Successfully validated or downloaded update eec264ac-fbc7-4cc4-891b-7cc6ab5bfe0e! [14, PID:820][10/12/2012 13:54:03] :System.Management.ManagementException\r\nNot found \r\n at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObject.Initialize(Boolean getObject) at System.Management.ManagementBaseObject.get_wbemObject() at System.Management.PropertyData.RefreshPropertyInfo() at System.Management.PropertyDataCollection.get_Item(String propertyName) at System.Management.ManagementBaseObject.GetPropertyValue(String propertyName) at System.Management.ManagementBaseObject.get_Item(String propertyName) at Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine.WqlConnectionManager.GetInstance(String objectPath)\r\nManagementException details: instance of __ExtendedStatus { Operation = "GetObject"; ParameterInfo = "SMS_PackageToContent.ContentID=16784547,PackageID=\"CA100065\""; ProviderName = "WinMgmt"; }; \r\n [14, PID:820][10/12/2012 13:54:03] :(SMS_PackageToContent.ContentID=16784547,PackageID='CA100065') does not exist or its IsContentValid returns false. We will (re)download this content. [14, PID:820][10/12/2012 13:54:05] :Successfully validated or downloaded update 8d780338-eec1-4d31-b1cd-6187400c02f3! [14, PID:820][10/12/2012 13:54:05] :System.Management.ManagementException\r\nNot found \r\n at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode) at System.Management.ManagementObject.Initialize(Boolean getObject) at System.Management.ManagementBaseObject.get_wbemObject() at System.Management.PropertyData.RefreshPropertyInfo() at System.Management.PropertyDataCollection.get_Item(String propertyName) at System.Management.ManagementBaseObject.GetPropertyValue(String propertyName) at System.Management.ManagementBaseObject.get_Item(String propertyName) at Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine.WqlConnectionManager.GetInstance(String objectPath)\r\nManagementException details: instance of __ExtendedStatus { Operation = "GetObject"; ParameterInfo = "SMS_PackageToContent.ContentID=16787423,PackageID=\"CA100065\""; ProviderName = "WinMgmt"; }; \r\n [14, PID:820][10/12/2012 13:54:05] :(SMS_PackageToContent.ContentID=16787423,PackageID='CA100065') does not exist or its IsContentValid returns false. We will (re)download this content.

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  • Account Preferences Crashes

    - by Vivek Sundaram
    When I click on System Preferences Accounts, I get a crash [every single time]. Here are a few interesting snippets from the "Problem Report". Any ideas on how to tackle this? Process: System Preferences [607] Path: /Applications/System Preferences.app/Contents/MacOS/System Preferences Identifier: com.apple.systempreferences Version: 7.0 (7.0) Build Info: SystemPrefsApp-1750100~5 Code Type: X86-64 (Native) Parent Process: launchd [184] OS Version: Mac OS X 10.6.5 (10H574) Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x0000000117547860 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc_msgSend() selector name: willSelect objc[607]: garbage collection is ON Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff80fd211c objc_msgSend + 40 1 com.apple.systempreferences 0x0000000100008426 0x100000000 + 33830 2 com.apple.systempreferences 0x0000000100006fb8 0x100000000 + 28600 3 com.apple.Foundation 0x00007fff84ede23c __NSFireDelayedPerform + 404 4 com.apple.CoreFoundation 0x00007fff824acbe8 __CFRunLoopRun + 6488 5 com.apple.CoreFoundation 0x00007fff824aadbf CFRunLoopRunSpecific + 575 6 com.apple.HIToolbox 0x00007fff82ec691a RunCurrentEventLoopInMode + 333 7 com.apple.HIToolbox 0x00007fff82ec671f ReceiveNextEventCommon + 310 8 com.apple.HIToolbox 0x00007fff82ec65d8 BlockUntilNextEventMatchingListInMode + 59 9 com.apple.AppKit 0x00007fff866c0e64 _DPSNextEvent + 718 10 com.apple.AppKit 0x00007fff866c07a9 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155 11 com.apple.AppKit 0x00007fff8668648b -[NSApplication run] + 395 12 com.apple.AppKit 0x00007fff8667f1a8 NSApplicationMain + 364 13 com.apple.systempreferences 0x0000000100001cf4 0x100000000 + 7412 ... Thread 0 crashed with X86 Thread State (64-bit): rax: 0x0000000000000001 rbx: 0x0000000200037840 rcx: 0x0000000200058031 rdx: 0x00007fff5fbfe2c0 ... Binary Images: 0x100000000 - 0x10001eff7 com.apple.systempreferences 7.0 (7.0) <30C04F1A-7711-1359-8A0E-D707B8BF2EB4> /Applications/System Preferences.app/Contents/MacOS/System Preferences 0x100758000 - 0x10076dfff com.apple.frameworks.opendirectoryconfigui 10.6.4 (10.6.4) <4711F2E8-DFA5-4C81-BB2A-B1E39D5B1B91> /System/Library/PrivateFrameworks/OpenDirectoryConfigUI.framework/Versions/A/OpenDirectoryConfigUI ...

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  • Setting int more than once causes crash

    - by JulianB
    I'm doing a CABasicAnimation and getting the value from a nested NSMutableArray. Everything is great the first time it runs but crashes when called again either with custom functions or viewDidLoad. I've isolated it down to this line int int1 = [[[locationsArray objectAtIndex:0] objectAtIndex:0 ]integerValue] ; I assume it's to do with int not being a pointer but I'm lost as have to get the value without crashing the second time around Process: CEO Report 2011 [61880] Path: /Users/julian/Library/Application Support/iPhone Simulator/4.2/Applications/03CFB7BC-0722-4CA0-9E7D-39772AEEF444/CEO Report 2011.app/CEO Report 2011 Identifier: CEO Report 2011 Version: ??? (???) Code Type: X86 (Native) Parent Process: launchd [252] Date/Time: 2011-11-13 17:04:28.093 +0000 OS Version: Mac OS X 10.6.8 (10K549) Report Version: 6 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x000000005079706f Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc_msgSend() selector name: objectAtIndex: iPhone Simulator 235, iPhone OS 4.2 (iPad/8C134) Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x012f1a78 objc_msgSend + 44 1 CEO Report 2011 0x0001afbd -[TalentRVC doBoxes:] + 61 (TalentRVC.m:594) 2 CEO Report 2011 0x00017025 -[TalentRVC locationSelected:] + 1123 (TalentRVC.m:137) 3 CEO Report 2011 0x0001659f -[TalentRVC segmentedControlIndexChangedA] + 290 (TalentRVC.m:53) 4 UIKit 0x002fba6e -[UIApplication sendAction:to:from:forEvent:] + 119 5 UIKit 0x0038a1b5 -[UIControl sendAction:to:forEvent:] + 67 6 UIKit 0x0038c647 -[UIControl(Internal) _sendActionsForEvents:withEvent:] + 527 7 UIKit 0x0038a16c -[UIControl sendActionsForControlEvents:] + 49 8 UIKit 0x003c96b2 -[UISegmentedControl setSelectedSegmentIndex:] + 574 9 UIKit 0x003ce17e -[UISegmentedControl touchesBegan:withEvent:] + 971 10 UIKit 0x00320025 -[UIWindow _sendTouchesForEvent:] + 395 11 UIKit 0x0030137a -[UIApplication sendEvent:] + 447 12 UIKit 0x00306732 _UIApplicationHandleEvent + 7576 13 GraphicsServices 0x01a5ca36 PurpleEventCallback + 1550 14 CoreFoundation 0x01171064 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52 15 CoreFoundation 0x010d16f7 __CFRunLoopDoSource1 + 215 16 CoreFoundation 0x010ce983 __CFRunLoopRun + 979 17 CoreFoundation 0x010ce240 CFRunLoopRunSpecific + 208 18 CoreFoundation 0x010ce161 CFRunLoopRunInMode + 97 19 GraphicsServices 0x01a5b268 GSEventRunModal + 217 20 GraphicsServices 0x01a5b32d GSEventRun + 115 21 UIKit 0x0030a42e UIApplicationMain + 1160 22 CEO Report 2011 0x00002864 main + 102 (main.m:14) 23 CEO Report 2011 0x000027f5 start + 53 Thread 1: Dispatch queue: com.apple.libdispatch-manager 0 libSystem.B.dylib 0x98a10382 kevent + 10 1 libSystem.B.dylib 0x98a10a9c _dispatch_mgr_invoke + 215 2 libSystem.B.dylib 0x98a0ff59 _dispatch_queue_invoke + 163 3 libSystem.B.dylib 0x98a0fcfe _dispatch_worker_thread2 + 240 4 libSystem.B.dylib 0x98a0f781 _pthread_wqthread + 390 5 libSystem.B.dylib 0x98a0f5c6 start_wqthread + 30 Thread 2: WebThread 0 libSystem.B.dylib 0x989e9afa mach_msg_trap + 10 1 libSystem.B.dylib 0x989ea267 mach_msg + 68 2 CoreFoundation 0x011714a6 __CFRunLoopServiceMachPort + 150 3 CoreFoundation 0x010ce874 __CFRunLoopRun + 708 4 CoreFoundation 0x010ce240 CFRunLoopRunSpecific + 208 5 CoreFoundation 0x010ce161 CFRunLoopRunInMode + 97 6 WebCore 0x023e1423 RunWebThread(void*) + 499 7 libSystem.B.dylib 0x98a17259 _pthread_start + 345 8 libSystem.B.dylib 0x98a170de thread_start + 34 Thread 3: 0 libSystem.B.dylib 0x989e9afa mach_msg_trap + 10 1 libSystem.B.dylib 0x989ea267 mach_msg + 68 2 CoreFoundation 0x011714a6 __CFRunLoopServiceMachPort + 150 3 CoreFoundation 0x010ce874 __CFRunLoopRun + 708 4 CoreFoundation 0x010ce240 CFRunLoopRunSpecific + 208 5 CoreFoundation 0x010ce161 CFRunLoopRunInMode + 97 6 Foundation 0x0009b162 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 398 7 Foundation 0x00065d4c -[NSThread main] + 81 8 Foundation 0x00065cd8 __NSThread__main__ + 1387 9 libSystem.B.dylib 0x98a17259 _pthread_start + 345 10 libSystem.B.dylib 0x98a170de thread_start + 34 Thread 4: com.apple.CFSocket.private 0 libSystem.B.dylib 0x98a08ac6 select$DARWIN_EXTSN + 10 1 CoreFoundation 0x01102cbc __CFSocketManager + 812 2 libSystem.B.dylib 0x98a17259 _pthread_start + 345 3 libSystem.B.dylib 0x98a170de thread_start + 34 Thread 5: 0 libSystem.B.dylib 0x98a0f412 __workq_kernreturn + 10 1 libSystem.B.dylib 0x98a0f9a8 _pthread_wqthread + 941 2 libSystem.B.dylib 0x98a0f5c6 start_wqthread + 30 Thread 0 crashed with X86 Thread State (32-bit): eax: 0x5079706f ebx: 0x0001af8c ecx: 0x04c8a1ff edx: 0x00200855 edi: 0x010bfbd0 esi: 0x56e58955 ebp: 0xbfffd408 esp: 0xbfffd3d4 ss: 0x0000001f efl: 0x00010206 eip: 0x012f1a78 cs: 0x00000017 ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037 cr2: 0x5079706f Binary Images: 0x1000 - 0x29ffb +CEO Report 2011 ??? (???) <C5838026-29D3-AF1E-8C66-F7F5C18CDDD2> /Users/julian/Library/Application Support/iPhone Simulator/4.2/Applications/03CFB7BC-0722-4CA0-9E7D-39772AEEF444/CEO Report 2011.app/CEO Report 2011 0x4a000 - 0x4cff7 +PBGDBIntrospectionSupport.A.dylib 1760.0.0 (compatibility 1.0.0) <C80BE225-06F2-4CB3-BF89-84A1B0FDCDA2> /Developer-3/Applications/Xcode.app/Contents/PlugIns/GDBMIDebugging.xcplugin/Contents/Resources/PBGDBIntrospectionSupport.A.dylib 0x51000 - 0x212fe7 +Foundation 751.49.0 (compatibility 300.0.0) <DB9A4461-C768-9B7B-E463-4568E3FAA179> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/Foundation.framework/Foundation 0x2ef000 - 0x7fbff3 +UIKit 1400.0.0 (compatibility 1.0.0) <EE783C53-A647-D7F8-62CF-FB3F7DD16C54> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/UIKit.framework/UIKit 0xa40000 - 0xc73ff7 com.apple.CoreGraphics 1.600.0 (???) <78926D2F-9A6C-8B48-BD99-72B3373872BD> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreGraphics.framework/CoreGraphics 0xcdc000 - 0xe3affb +CoreData 320.15.0 (compatibility 1.0.0) <75D8B19C-E452-CB13-87FA-CBFD44D3A04F> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreData.framework/CoreData 0xeb3000 - 0xefdffb +SystemConfiguration 379.0.0 (compatibility 1.0.0) <5A1E5868-7B70-7184-F4F6-B0FC574E49A0> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration 0xf1c000 - 0x100efef +QuartzCore 1.7.0 (compatibility 1.2.0) <FCA6F109-11B7-B38B-4EBF-D5C2CA9D5CE7> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/QuartzCore.framework/QuartzCore 0x1079000 - 0x108aff7 +libSystem.dylib 125.0.0 (compatibility 1.0.0) <76CE85FC-AAC8-DE1C-B533-ABCEF8783B8F> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libSystem.dylib 0x109d000 - 0x11ecfef +CoreFoundation 550.52.0 (compatibility 150.0.0) <CDA305C1-38E1-514F-0EFB-4B6A58E296D5> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 0x12de000 - 0x13abfe3 +libobjc.A.dylib 227.0.0 (compatibility 1.0.0) <FEB8BB90-29E8-F87A-EA47-9395667DA191> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libobjc.A.dylib 0x13fd000 - 0x15a3fe7 +libicucore.A.dylib 45.0.0 (compatibility 1.0.0) <05674AB8-3A5A-0D89-79F8-EA0817A32D38> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libicucore.A.dylib 0x160f000 - 0x170efe7 +libxml2.2.dylib 10.3.0 (compatibility 10.0.0) <08B31BB7-E603-0C9A-1D7D-17637EFEDA54> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libxml2.2.dylib 0x1733000 - 0x1741ff7 +libz.1.dylib 1.2.3 (compatibility 1.0.0) <F91C1567-31B2-CEFD-2D61-1B76C9F89E6A> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libz.1.dylib 0x1746000 - 0x188cff7 +CFNetwork 485.12.7 (compatibility 1.0.0) <FCD41C21-04EF-CDBB-84AC-9017DC3BF552> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CFNetwork.framework/CFNetwork 0x190a000 - 0x196efeb +Security ??? (???) <1D093A0E-0E15-231C-F11D-0645230EF7A1> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/Security.framework/Security 0x1996000 - 0x1999ff7 +IOKit 275.0.0 (compatibility 1.0.0) <E244134E-FFD4-D9C4-BF8E-E1235C0C17B7> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/IOKit.framework/IOKit 0x19a1000 - 0x19b7ff7 +libSystem.override.dylib ??? (???) <477EA8CC-61D1-D179-A7B6-2BB7C377600B> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/system/libSystem.override.dylib 0x19c2000 - 0x1a43ffb +libsqlite3.dylib 9.6.0 (compatibility 9.0.0) <BCEA48F2-1BF3-BD41-F3D8-D905806BFA57> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libsqlite3.dylib 0x1a55000 - 0x1a65fe3 +GraphicsServices 14.0.0 (compatibility 1.0.0) <BA0B832B-2252-0434-BFD7-99415BEDF76B> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices 0x1a76000 - 0x1c13ff3 +JavaScriptCore 533.17.9 (compatibility 1.0.0) <8B97277F-F677-F9B0-F82F-5E1E608EFA84> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore 0x1c66000 - 0x1d47ffb +ImageIO ??? (???) <6FAE198A-EAC4-9FBF-A922-1DF8200FD269> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/ImageIO.framework/ImageIO 0x1d71000 - 0x1dbdff3 +AddressBook 30.0.0 (compatibility 1.0.0) <A011434A-1249-3B7D-97EF-08F0AA0EFBB3> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/AddressBook.framework/AddressBook 0x1de7000 - 0x1f7efe7 +AudioToolbox 296.0.0 (compatibility 1.0.0) <C35F6411-41EB-92EC-F0E1-E3328746061D> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/AudioToolbox.framework/AudioToolbox 0x1fd2000 - 0x1fe5fff +SpringBoardServices ??? (???) <AE58FA0A-B824-CF60-3F40-4CEBBFC2F236> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices 0x1ff1000 - 0x2034ffb +AppSupport 29.0.0 (compatibility 1.0.0) <1B38F0B4-36BB-5BEB-917A-A5CFBFCEDADA> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/AppSupport.framework/AppSupport 0x2059000 - 0x20c7fe3 +CoreText ??? (???) <EE0D05CA-772A-9D07-7931-06B948B209D5> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreText.framework/CoreText 0x20f4000 - 0x2136feb +MobileCoreServices 20.0.0 (compatibility 1.0.0) <0F2407B2-C515-C6AC-B72B-0BA21568B152> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices 0x2150000 - 0x2231ff7 +WebKit 533.17.9 (compatibility 1.0.0) <C2BA78C7-45EC-54AA-E020-D7FD6ECE06F9> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/WebKit.framework/WebKit 0x22a9000 - 0x3090ffb +WebCore 533.17.9 (compatibility 1.0.0) <D9EEBA8C-F9D4-FAF4-E0BF-58CE7DAAFB96> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/WebCore.framework/WebCore 0x358c000 - 0x363ffe3 +ProofReader 101.0.0 (compatibility 1.0.0) <196C8CFD-C6BA-A5DE-5785-7F6042DC6425> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/ProofReader.framework/ProofReader 0x3656000 - 0x3659ff7 +libAccessibility.dylib ??? (???) <BFB0EA39-9E6F-026C-0C23-66A12AB3D336> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libAccessibility.dylib 0x3661000 - 0x368fff7 +PrintKit 66.0.0 (compatibility 1.0.0) <F171F166-8B5C-FBC7-497E-9DCDEB158348> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/PrintKit.framework/PrintKit 0x36a3000 - 0x3724fe3 +CoreTelephony 383.8.3 (compatibility 1.0.0) <7BEDF930-9CA4-E6A2-BBCE-C6E7A14DEE69> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreTelephony.framework/CoreTelephony 0x3767000 - 0x3768fff +DataMigration ??? (???) <87E44081-5DCB-6597-6865-90780FEB8597> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/DataMigration.framework/DataMigration 0x376d000 - 0x3770ff7 +MobileInstallation ??? (???) <DFD90490-F485-6945-1ABE-F4D6C7A94574> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/MobileInstallation.framework/MobileInstallation 0x3776000 - 0x37aafff +Bom 157.0.0 (compatibility 2.0.0) <7FE61FCF-0E89-0744-F24C-2D1F6C1EAE89> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/Bom.framework/Bom 0x37b7000 - 0x37c4fe7 +libbz2.1.0.dylib 1.0.5 (compatibility 1.0.0) <BD82EE16-8FB3-A7F5-4CC0-EDE15AC18507> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libbz2.1.0.dylib 0x37c9000 - 0x37d4ff7 +AggregateDictionary ??? (???) <37904D52-6186-14BB-560B-D8B21316BB52> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/AggregateDictionary.framework/AggregateDictionary 0x37df000 - 0x3853ff7 +CoreAudio ??? (???) <0669925D-3993-07DC-9E76-369C1709553E> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreAudio.framework/CoreAudio 0x3888000 - 0x3cf8ff3 +libBLAS.dylib ??? (???) <3EE46AD9-7807-F326-E0AF-BAEF5939654B> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib 0x3d1e000 - 0x4160fe7 +libLAPACK.dylib ??? (???) <F66279A8-EE9C-5723-C3A0-E507ED462F8F> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib 0x418c000 - 0x4198ff7 +CoreVideo 1.6.1 (compatibility 1.2.0) <966447F0-FB24-EC43-006E-CD32F1924481> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreVideo.framework/CoreVideo 0x41a5000 - 0x41b6ff7 +OpenGLES ??? (???) <EC9C05E6-BC78-B1B0-2044-7189D39A06FE> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/OpenGLES.framework/OpenGLES 0x41bf000 - 0x41c4ff3 +libGFXShared.dylib ??? (???) <0694A0A1-F539-2856-C2BA-61D323D56DEF> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/OpenGLES.framework/libGFXShared.dylib 0x41ca000 - 0x4205ff7 +libGLImage.dylib ??? (???) <9318562A-FDB5-0722-FC9C-BA0057BD3F53> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/OpenGLES.framework/libGLImage.dylib 0x420e000 - 0x4319ff7 +libGLProgrammability.dylib ??? (???) <F7AC6198-8A35-5DC9-2BDD-AD03BEC21EF5> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/OpenGLES.framework/libGLProgrammability.dylib 0x4339000 - 0x4340fff +libCoreVMClient.dylib ??? (???) <785DDEAB-CB21-E1A6-35C2-A7A3E02E48B2> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/OpenGLES.framework/libCoreVMClient.dylib 0x4348000 - 0x4b2ef4f +libLLVMContainer.dylib ??? (???) <067A9A4D-1B73-B338-BD26-54D28AFCC04F> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/OpenGLES.framework/libLLVMContainer.dylib 0x4c85000 - 0x4c8aff3 +AssetsLibraryServices ??? (???) <5BC721E0-FB4E-B81B-4FED-DF7189AD8BA0> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices 0x4c90000 - 0x4c90ff7 +libresolv.dylib 41.0.0 (compatibility 1.0.0) <78A807DB-B13E-9550-9C2E-8DA1DCBFEE8A> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libresolv.dylib 0x4f52000 - 0x4f9ffe7 +libCGFreetype.A.dylib 600.0.0 (compatibility 64.0.0) <2DFF120B-1542-ED85-07DC-EE7394592B76> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreGraphics.framework/Resources/libCGFreetype.A.dylib 0x4fb7000 - 0x4fe0fe7 +libRIP.A.dylib 600.0.0 (compatibility 64.0.0) <0E986874-F95E-1CA2-C221-E99DBD2E6AB1> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/CoreGraphics.framework/Resources/libRIP.A.dylib 0xbeb0000 - 0xbeb9fff +WebUI ??? (???) <33AE9B5E-6083-2103-174B-2E6EC60A58A6> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/WebUI.framework/WebUI 0xbec3000 - 0xbec7ff3 +CertUI ??? (???) <5C86FEAC-C796-A9EA-076F-5A34B74B755E> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/CertUI.framework/CertUI 0xbece000 - 0xbed4ff3 +libMobileGestalt.dylib ??? (???) <1A9029E7-6BCA-46F5-0FAE-FB96EED30A05> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/usr/lib/libMobileGestalt.dylib 0xbedc000 - 0xbeefffb +PersistentConnection ??? (???) <E7C7258E-A316-B701-08C2-2A58A90211AB> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/PersistentConnection.framework/PersistentConnection 0xc210000 - 0xc26bff7 +ManagedConfiguration ??? (???) <85935272-F391-D5FF-9976-EFC8560AC1CB> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/ManagedConfiguration.framework/ManagedConfiguration 0xc2a9000 - 0xc2b7ff3 +AccountSettings ??? (???) <E77F2419-8ADC-3CC5-23A9-74F2CECA68B3> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/AccountSettings.framework/AccountSettings 0xc2c1000 - 0xc2c5fff +ApplePushService ??? (???) <218FD678-275F-0EDC-C9FF-D03062736212> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/ApplePushService.framework/ApplePushService 0xc2cb000 - 0xc2dcffb +DataDetectorsUI 52.0.0 (compatibility 1.0.0) <A2C9C080-84D0-5B51-40BE-4B6A7C512D91> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/DataDetectorsUI.framework/DataDetectorsUI 0xc2e9000 - 0xc2fdfe7 +DataDetectorsCore 154.0.0 (compatibility 1.0.0) <113CA3D9-474B-1223-ACA7-EB4D473C1583> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/PrivateFrameworks/DataDetectorsCore.framework/DataDetectorsCore 0xcdbd000 - 0xce00ff3 +QuickLook ??? (???) <94F8984E-BCEA-ADED-7749-C29CE5E04C68> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/Frameworks/QuickLook.framework/QuickLook 0xce29000 - 0xcf75fff +RawCamera 1.0.1 (compatibility 1.0.0) <33F076B3-56FC-6978-3FD7-DF5B1A416D02> /Developer-3/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.2.sdk/System/Library/CoreServices/RawCamera.bundle/RawCamera 0x8fe00000 - 0x8fe4163b dyld 132.1 (???) <4CDE4F04-0DD6-224E-ACE5-3C06E169A801> /usr/lib/dyld 0x91590000 - 0x91593fe7 libmathCommon.A.dylib 315.0.0 (compatibility 1.0.0) <1622A54F-1A98-2CBE-B6A4-2122981A500E> /usr/lib/system/libmathCommon.A.dylib 0x91681000 - 0x91681ff7 com.apple.Accelerate 1.6 (Accelerate 1.6) <3891A689-4F38-FACD-38B2-4BF937DE30CF> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate 0x92ff7000 - 0x930ebff7 libiconv.2.dylib 7.0.0 (compatibility 7.0.0) <061ABF36-8BA9-79C1-6CE7-EC69A4998F51> /usr/lib/libiconv.2.dylib 0x9352d000 - 0x93541fe7 libbsm.0.dylib ??? (???) <821E415B-6C42-D359-78FF-E892792F8C52> /usr/lib/libbsm.0.dylib 0x9554f000 - 0x9562ffe7 com.apple.vImage 4.1 (4.1) <D029C515-08E1-93A6-3705-DD062A3A672C> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage 0x95630000 - 0x9569afe7 libstdc++.6.dylib 7.9.0 (compatibility 7.0.0) <411D87F4-B7E1-44EB-F201-F8B4F9227213> /usr/lib/libstdc++.6.dylib 0x97f72000 - 0x97f7eff7 libkxld.dylib ??? (???) <9A441C48-2D18-E716-5F38-CBEAE6A0BB3E> /usr/lib/system/libkxld.dylib 0x97f7f000 - 0x97f7fff7 com.apple.vecLib 3.6 (vecLib 3.6) <FF4DC8B6-0AB0-DEE8-ADA8-7B57645A1F36> /System/Library/Frameworks/vecLib.framework/Versions/A/vecLib 0x9869b000 - 0x986bbfe7 libresolv.9.dylib 41.0.0 (compatibility 1.0.0) <BF7FF2F6-5FD3-D78F-77BC-9E2CB2A5E309> /usr/lib/libresolv.9.dylib 0x98704000 - 0x98746ff7 libvDSP.dylib 268.0.1 (compatibility 1.0.0) <8A4721DE-25C4-C8AA-EA90-9DA7812E3EBA> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib 0x98747000 - 0x987b6ff7 libvMisc.dylib 268.0.1 (compatibility 1.0.0) <595A5539-9F54-63E6-7AAC-C04E1574B050> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib 0x989e9000 - 0x98b90ff7 libSystem.B.dylib 125.2.11 (compatibility 1.0.0) <2DCD13E3-1BD1-6F25-119A-3863A3848B90> /usr/lib/libSystem.B.dylib 0x9a4e5000 - 0x9a542ff7 com.apple.framework.IOKit 2.0 (???) <3DABAB9C-4949-F441-B077-0498F8E47A35> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit 0xffff0000 - 0xffff1fff libSystem.B.dylib ??? (???) <2DCD13E3-1BD1-6F25-119A-3863A3848B90> /usr/lib/libSystem.B.dylib EDIT: After turning on NSZombieEnabled looks like my NSMutableArray is being deallocated? .h @interface TalentRVC : UIViewController <locationGlobalMenuDelegate, industryGlobalMenuDelegate>{ NSMutableArray *locationsArray; } @property (nonatomic, retain) NSMutableArray *locationsArray; @end .m -(void)buildArrays { locationsArray = [NSMutableArray arrayWithCapacity: 8]; for (int i = 0; i!=8; i++){ NSMutableArray *array = [NSMutableArray arrayWithCapacity: 8]; [locationsArray addObject: array]; } //Africa [[locationsArray objectAtIndex:0] addObject: [NSNumber numberWithInt: 83]]; ... //Middle East [[locationsArray objectAtIndex:1] addObject: [NSNumber numberWithInt: 89]]; ... NSLog(@"Built locationsArray"); } So after running the first time locationsArray is dumped from memory? If so, how do I can it?

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  • How to know whether to create a general system or to hack a solution

    - by Andy K
    I'm new to coding , learning it since last year actually. One of my worst habits is the following: Often I'm trying to create a solution that is too big , too complex and doesn't achieve what needs to be achieved, when a hacky kludge can make the fit. One last example was the following (see paste bin link below) http://pastebin.com/WzR3zsLn After explaining my issue, one nice person at stackoverflow came with this solution instead http://stackoverflow.com/questions/25304170/update-a-field-by-removing-quarter-or-removing-month When should I keep my code simple and when should I create a 'big', general solution? I feel stupid sometimes for building something so big, so awkward, just to solve a simple problem. It did not occur to me that there would be an easier solution. Any tips are welcomed. Best

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