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Is there a way of knowing (through an application's code)if a process is still running or it hanged?
I'm trying to design a watchdog that has to monitor some processes. Except for killing/starting them, i have no other access to these processes.
Thanks
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Can you see them on the Task Manager and did you test ProcessMonitor?
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I can, the problem is that those processes might hang and i need to know when this happens and restart them from a watchdog.
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If you can write code for the critical process, have it send a message to your watchdog on a regular basis. If the watchdog misses two or three messages, it kills and restarts the process. If you do not have access to the code, you will have to look for something the process does on a regular basis and maybe key off that. What does it do that makes it critical? That may help you find something to monitor. Can you write code to check the program counter? Where is the PC when the process hangs. What about I/O count?
Thanks for your time
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bkelly13 wrote: If you can write code for the critical process, have it send a message to your watchdog on a regular basis. If the watchdog misses two or three messages, it kills and restarts the process. If you do not have access to the code, you will have to look for something the process does on a regular basis and maybe key off that.
Thank you. Actually this answers my question. I was wondering if there was some kind of an OS/kernel way of testing if a project is still active or not. I've done some reading and didn't find any reference to what i needed. The options you've posted above gave me the answer i was looking for.
Thanks,
Eugen
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Hi everyone,
I have three OS's on my system Xp,server 2003 Pack2 and Vista now I want to delete and reinstall these Os's of my system,my drivers are NTFS.When I was trying to boot my system with driver A: I cant format any drive and it shows me c: or d: are not exist
how can I do it?
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Boot your system from CDROM or DVDROM.
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Hi,
Please know that when we boot the system with Drive A: it does not recognize the NTFS partitions of the HardDrive. The better option is Boot the system with CDROM or DVDROM.
Hope this helps 
Regards,
John Adams
ComponentOne LLC
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Hi,
I was wondering if it is possible to simulate a file in windows? i.e. The file doesn't actually exist in the file system but i can open it in any application and my executable (or dll/fsd) provides run time data to that application for that file?
e.g.
C:\Windows\notepad non-existent-file.txt
The above command will open notepad and the notepad will try to access the file 'non-existent-file.txt' in the current directory. This file as the name implies doesn't actually exist and i want the OS to provide my application's dynamically provided data?
What i am really interested is the right direction? Is it possible? and do i need to write a File System Driver or some hooking is available in Windows?
Thanks in advance.
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I believe it could be possible.. One way you could do it would be to API hook Kernel32, where the OpenFile function is stored.. Most files use this function to open a file so you could potentially get the file parameter passed to it and then do whatever you want with it then pass your newly created handle back to the calling process.
Conveniently there is an article on API hooking on The Code Project here.
Hope this helps,
--Perspx
"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." - Bill Gates
BSoD during a Win98 presentation
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Hi,
yes, you can develop your own "file system", and have it mount its files (real or virtual)
under a (so far unused) drive letter, so they become available to all programs.
It will not be an easy task though; I would not consider doing it if I can avoid it.
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Luc Pattyn wrote: It will not be an easy task though; I would not consider doing it if I can avoid it.
Lets just say i don't seem to have a choice  and i have to do it :@. Now how to go about it? 
Thanks.
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Searching CP I stumbled on this article.[^] Maybe it could be useful to you?
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Thanks alot, i guess this will work
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Can anyone show me a way to get system cpu usage from a batch file and return it as a percentage so I can display it in an HMI software package?
Thanks
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You might try WMI[^]
We are a big screwed up dysfunctional psychotic happy family - some more screwed up, others more happy, but everybody's psychotic joint venture definition of CP
blog: TDD - the Aha! | Linkify!| FoldWithUs! | sighist
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We are trying to get an interactive command prompt,running with 'SYSTEM' user credentials
The sequence of steps are as follows:
1) Get the local time (through the TIME shell command, for example)
2) Add one minute to this time
3) Run the AT command with this new time.
4) Wait one minute for the command window to appear.
An example set is as below:
E:\Documents and Settings\Adi>time
The current time is: *16:29*:00.96
Enter the new time:
E:\Documents and Settings\Adi>at *16:30* /interactive cmd.exe
Added a new job with job ID = 1
We do get a command prompt with 'SYSTEM' privileges.
Next,we attempt to do this on a remote w2003 host through REMOTE login.
In this case,though we find the cmd.exe running in the task manager,we DO NOT see the command prompt in the foreground.
What service/security setting prevents the command prompt to interact with the desktop in this case?
We also confirmed that in certain other environments ,we do see the command prompt on the foreground ,even via remote login.
Unfortunately,we have not been able to work out the security 'tweak',which obstructs our first environment from doing so.
Any help will be much appreciated.
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rana74 wrote: What service/security setting prevents the command prompt to interact with the desktop in this case?
Everything. Because of the MASSIVE security risk, interactive processes are not allowed to be visible when launched on remote systems.
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Well this definitely does not seem to be the case for all hosts - as we have this 'interactivity' working even for remote login into most of our w2003 host environments,where we have out-of-box security settings.
So,there is some security switch which 'hardens' this property - as we see in some other environments.
We are eager to find out what that 'switch' is.
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rana74 wrote: Well this definitely does not seem to be the case for all hosts - as we have this 'interactivity' working even for remote login into most of our w2003 host environments,where we have out-of-box security settings.
Not out of the box you don't. Unless you're using a third party tool that does this to get around the limitation, like PSEXEC. Using the Win32 API, you cannot launch an interactive remote process and there is no "switch" to get around it.
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It's very straightforward: 'interactive' services display in session 0, the 'console' session. This is the session you see when you log on on the physical keyboard/mouse/screen (or emulation of it, if you're using a virtual machine).
Normally, a remote connection with Remote Desktop (Terminal Services Client) to a Windows Server OS gives you a new session. Windows Server 2003 allows you to connect to the console session by passing the /console switch to mstsc. You can also specify '/console' after the computer name in the connection dialog. This feature is only supported in Windows Server 2003; Windows 2000 ignores the setting.
Other 'remote desktop' tools like VNC and LogMeIn actually give you the console session.
Windows Vista and Windows Server 2008 have 'session 0 lockdown' - users log on to session 1 and above, even if logging on at the physical computer. UI created by 'interactive' services is not shown - session 0 is now only used to allow interactive services to communicate with each other. See Impact of Session 0 Isolation on Services and Drivers in Windows Vista[^].
DoEvents: Generating unexpected recursion since 1991
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On Windows XP, I've observed that modifying in-memory code in system DLL's only affects the current process. Does the same hold true on all versions of Windows from Windows 95 to the present?
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zildjohn01 wrote: On Windows XP, I've observed that modifying in-memory code in system DLL's only affects the current process. Does the same hold true on all versions of Windows from Windows 95 to the present?
Yes. Each process gets it's own copy of the operating system environment.
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In Win 9x, all memory from 0x80000000-0xFFFFFFFF is shared and writable to all processes. System DLLs (and other interesting bits like shared memory sections) reside there. This is not the case on NT-based OSes.
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Is there some way to modify the Internet Explorer security settings for the 'LocalSystem' account.
'Local System' account is the user under which all windows services run by default.
We need to achieve this either programmatically or through edit of registry settings.
Internet security privileges for the 'LocalSystem' account (like allowign download of unsigned activex controls) cannot be modified from the browser.,unlike an interactive user.
We also do not have the option to launch the browser programmatically by impersonatign as this user.
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