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946 :: How do I get the process ID of the current program?

• jtgd (orginal) [2015-03-01T08:15:31+01:00] view original

  The docs are a little thin. Module osproc has

  
    proc processID(p: Process): int
  Run

  but I have no idea what to provide as a parameter.

  TIA

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• Varriount (orginal) [2015-03-01T10:35:23+01:00] view original

  presumably, you need to give it a process object, which is usually created/given by one of the other procedures in the same module.

  as of yet that module does not provide a way to get the own processes id, likely because it's not something that is usually needed. A quick search shows that Windows uses GetCurrentProcessId from kernel32.dll, while OpenBSD, Linux, Mac OSX, and the other Posix systens use getpid from unistd.h - It shouldn't be too hard to wrap those into one procedure.

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• jtgd (orginal) [2015-03-01T11:27:32+01:00] view original

  Thanks for the clue. getpid() was in module posix already.

  The pid is handy for unique filenames, like $$ in bash.

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• Varriount (orginal) [2015-03-01T12:17:23+01:00] view original

  If it isn't too much trouble, it might be worth it to wrap getpid and GetCurrentProcessId in a single procedure, and add that to the osproc module.

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• timothee (orginal) [2018-12-03T21:07:53+01:00] view original

  https://github.com/nim-lang/Nim/pull/9846

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• Schelz (orginal) [2024-02-06T13:13:05+01:00] view original

  This is how I managed to get current process id:

  
  import winim
  proc vGetCurrentProcID*(): int32 =
    var
      hwnd: HWND = GetForegroundWindow()
      pid: int32
    GetWindowThreadProcessId(hwnd, pid.addr)
    
    return pid
  Run

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• ggibson (orginal) [2024-02-07T01:37:54+01:00] view original

  That looks involved. Just dropping this here because the thread got revived without mentioning this. https://nim-lang.org/docs/os.html#getCurrentProcessId

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