Retrieving open COM handles from arbitrary PIDs
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From: SamCPP on 30 Jun 2008 21:30 Hi, I am trying to build a diagnostic utility for an application that I have written in C++ (Win32). The application uses a COM port but on occasion, the COM port may be locked by another application. I can successfully retrieve all currently running PIDs (and their associated image names) but is there any way to retrieve any open handles to COM ports that they may have? The sysinternals program "handle" does not retrieve handles to COM ports. Thanks, Sam
From: Kerem G�mr�kc� on 30 Jun 2008 21:40 Hi Sam, try "Process Explorer",... Press Ctrl+H for handles in lower pane and Ctrl+D for loaded libaries,... You can also search for handles by pressing Ctrl+F Regards Kerem -- -- ----------------------- Beste Gr�sse / Best regards / Votre bien devoue Kerem G�mr�kc� Microsoft Live Space: http://kerem-g.spaces.live.com/ Latest Open-Source Projects: http://entwicklung.junetz.de ----------------------- "This reply is provided as is, without warranty express or implied." "SamCPP" <SamCPP(a)discussions.microsoft.com> schrieb im Newsbeitrag news:81901330-6456-4E6F-A8F6-9AF12F079D38(a)microsoft.com... > Hi, > > I am trying to build a diagnostic utility for an application that I have > written in C++ (Win32). The application uses a COM port but on occasion, the > COM port may be locked by another application. > > I can successfully retrieve all currently running PIDs (and their associated > image names) but is there any way to retrieve any open handles to COM ports > that they may have? The sysinternals program "handle" does not retrieve > handles to COM ports. > > Thanks, > Sam
From: SamCPP on 30 Jun 2008 23:26 Hi Kerem, Thanks for your reply. I see that I can locate the file through process explorer but how can I obtain that information programmatically (in my Win32 application)? Thanks, Sam "Kerem Gümrükcü" wrote: > Hi Sam, > > try "Process Explorer",... > > Press Ctrl+H for handles in lower pane > and Ctrl+D for loaded libaries,... > > You can also search for handles by > pressing Ctrl+F > > Regards > > Kerem > > -- > -- > ----------------------- > Beste Grüsse / Best regards / Votre bien devoue > Kerem Gümrükcü > Microsoft Live Space: http://kerem-g.spaces.live.com/ > Latest Open-Source Projects: http://entwicklung.junetz.de > ----------------------- > "This reply is provided as is, without warranty express or implied." > > "SamCPP" <SamCPP(a)discussions.microsoft.com> schrieb im Newsbeitrag > news:81901330-6456-4E6F-A8F6-9AF12F079D38(a)microsoft.com... > > Hi, > > > > I am trying to build a diagnostic utility for an application that I have > > written in C++ (Win32). The application uses a COM port but on occasion, > the > > COM port may be locked by another application. > > > > I can successfully retrieve all currently running PIDs (and their > associated > > image names) but is there any way to retrieve any open handles to COM > ports > > that they may have? The sysinternals program "handle" does not retrieve > > handles to COM ports. > > > > Thanks, > > Sam > > >
From: Kerem G�mr�kc� on 30 Jun 2008 23:44 Hi Sam, there are some "partially" undocumented apis for this: http://www.woodmann.com/forum/showthread.php?t=6318 http://forum.sysinternals.com/forum_posts.asp?TID=14546&KW=open+handles http://forum.sysinternals.com/forum_posts.asp?TID=14268&KW=open+handles I see you are a member of sysinternals forum. You will find a lot of information about this topic there, you also can ask individuals there how they did something,... But these examples are good enough,... Hope this Helps,... Regards Kerem -- -- ----------------------- Beste Gr�sse / Best regards / Votre bien devoue Kerem G�mr�kc� Microsoft Live Space: http://kerem-g.spaces.live.com/ Latest Open-Source Projects: http://entwicklung.junetz.de ----------------------- "This reply is provided as is, without warranty express or implied." "SamCPP" <SamCPP(a)discussions.microsoft.com> schrieb im Newsbeitrag news:C432B69C-8B68-41AC-BA32-577EAF0BD291(a)microsoft.com... > Hi Kerem, > > Thanks for your reply. I see that I can locate the file through process > explorer but how can I obtain that information programmatically (in my Win32 > application)? > > Thanks, > Sam > > "Kerem G�mr�kc�" wrote: > > > Hi Sam, > > > > try "Process Explorer",... > > > > Press Ctrl+H for handles in lower pane > > and Ctrl+D for loaded libaries,... > > > > You can also search for handles by > > pressing Ctrl+F > > > > Regards > > > > Kerem > > > > -- > > -- > > ----------------------- > > Beste Gr�sse / Best regards / Votre bien devoue > > Kerem G�mr�kc� > > Microsoft Live Space: http://kerem-g.spaces.live.com/ > > Latest Open-Source Projects: http://entwicklung.junetz.de > > ----------------------- > > "This reply is provided as is, without warranty express or implied." > > > > "SamCPP" <SamCPP(a)discussions.microsoft.com> schrieb im Newsbeitrag > > news:81901330-6456-4E6F-A8F6-9AF12F079D38(a)microsoft.com... > > > Hi, > > > > > > I am trying to build a diagnostic utility for an application that I ha ve > > > written in C++ (Win32). The application uses a COM port but on occasion, > > the > > > COM port may be locked by another application. > > > > > > I can successfully retrieve all currently running PIDs (and their > > associated > > > image names) but is there any way to retrieve any open handles to COM > > ports > > > that they may have? The sysinternals program "handle" does not retrieve > > > handles to COM ports. > > > > > > Thanks, > > > Sam > > > > > >
From: SamCPP on 1 Jul 2008 01:08
Thanks Kerem. I obviously didn't find those threads but I think that is what I was looking for. Cheers, Sam "Kerem Gümrükcü" wrote: > Hi Sam, > > there are some "partially" undocumented apis for this: > http://www.woodmann.com/forum/showthread.php?t=6318 > http://forum.sysinternals.com/forum_posts.asp?TID=14546&KW=open+handles > http://forum.sysinternals.com/forum_posts.asp?TID=14268&KW=open+handles > > I see you are a member of sysinternals forum. You will > find a lot of information about this topic there, you also can > ask individuals there how they did something,... > > But these examples are good enough,... > > Hope this Helps,... > > Regards > > Kerem > > -- > -- > ----------------------- > Beste Grüsse / Best regards / Votre bien devoue > Kerem Gümrükcü > Microsoft Live Space: http://kerem-g.spaces.live.com/ > Latest Open-Source Projects: http://entwicklung.junetz.de > ----------------------- > "This reply is provided as is, without warranty express or implied." > > "SamCPP" <SamCPP(a)discussions.microsoft.com> schrieb im Newsbeitrag > news:C432B69C-8B68-41AC-BA32-577EAF0BD291(a)microsoft.com... > > Hi Kerem, > > > > Thanks for your reply. I see that I can locate the file through process > > explorer but how can I obtain that information programmatically (in my > Win32 > > application)? > > > > Thanks, > > Sam > > > > "Kerem Gümrükcü" wrote: > > > > > Hi Sam, > > > > > > try "Process Explorer",... > > > > > > Press Ctrl+H for handles in lower pane > > > and Ctrl+D for loaded libaries,... > > > > > > You can also search for handles by > > > pressing Ctrl+F > > > > > > Regards > > > > > > Kerem > > > > > > -- > > > -- > > > ----------------------- > > > Beste Grüsse / Best regards / Votre bien devoue > > > Kerem Gümrükcü > > > Microsoft Live Space: http://kerem-g.spaces.live.com/ > > > Latest Open-Source Projects: http://entwicklung.junetz.de > > > ----------------------- > > > "This reply is provided as is, without warranty express or implied." > > > > > > "SamCPP" <SamCPP(a)discussions.microsoft.com> schrieb im Newsbeitrag > > > news:81901330-6456-4E6F-A8F6-9AF12F079D38(a)microsoft.com... > > > > Hi, > > > > > > > > I am trying to build a diagnostic utility for an application that I ha > ve > > > > written in C++ (Win32). The application uses a COM port but on > occasion, > > > the > > > > COM port may be locked by another application. > > > > > > > > I can successfully retrieve all currently running PIDs (and their > > > associated > > > > image names) but is there any way to retrieve any open handles to COM > > > ports > > > > that they may have? The sysinternals program "handle" does not > retrieve > > > > handles to COM ports. > > > > > > > > Thanks, > > > > Sam > > > > > > > > > > > > |