win32 process name

[Keith Dart]

Fredrik Lundh wrote:
> "phil" <phillip.watts at anvilcom.com> wrote:
> 
> 
>>from win32all
>>EnumProcesses gives me the pids, then
>>OpenProcess(pid) gives me a handle.
>>Then what?
>>GetModuleFileNameEX?  It requires two handles as args
>>and I can't figure out which one is the handle from OpenProcess
>>and what it wants for the other one and I can't find any
>>Win32 SDK docs that help.
> 
> 
> http://msdn.microsoft.com/library/en-us/perfmon/base/getmodulefilenameex.asp
> 
> describes a function with two [in] arguments, and one [out] argument.
> the first argument is the process handle, the second a module handle;
> the second argument can be NULL.
> 
> 
>>This ought to be a nobrainer. But Nooo. Its Windows.
> 
> 
> it can be pretty tricky on other platforms too; that's why Unix programs usually
> solve this by writing their PID to a file in a known location, so that other programs
> can find them without having to resort to more or less stupid tricks.
> 
> </F> 

On Linux, you can just scan the /proc directory. This is what the procps 
package does. From the command line:

310 $ ps -o cmd --no-heading 867
metalog [MASTER]

In the pyNMS package on sourceforge 
(http://sourceforge.net/projects/pynms) there is a module called 
Linux.procfs, and in it there is an object called "ProcStat" that lets 
you get the process info easily (if running on Linux).

Python> import procfs
Python> procfs.ProcStat(1)
Python> pid1 = procfs.ProcStat(1)
Python> print pid1
         cmdline: init [3]
        cmaj_flt: 63690958
        cmin_flt: 186761321
          cnswap: 0
         command: (init)
             eip: 35
             esp: 43
     exit_signal: 0
           flags: 256
   it_real_value: 0
         maj_flt: 224
         min_flt: 1963
     mm_end_code: 134538444
   mm_start_code: 134512640
  mm_start_stack: 3221225232
            nice: 0
           nswap: 0
            pgrp: 0
             pid: 1
            ppid: 0
        priority: 15
       processor: 0
        rlim_cur: 4294967295
             rss: 117
         session: 0
     sig_blocked: 0
       sig_catch: 671819267
      sig_ignore: 1475401980
     sig_pending: 0
      start_time: 42
           state: S
      tms_cstime: 731277
      tms_cutime: 9593767
       tms_stime: 237
       tms_utime: 75
          tty_nr: 0
        tty_pgrp: -1
           vsize: 1429504
           wchan: 3222957162


-- 
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    Keith Dart <kdart at kdart.com>
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