gcc/fortran/doc/gfortran/intrinsic-procedures/getpid.rst

   1 ..
   2   Copyright 1988-2022 Free Software Foundation, Inc.
   3   This is part of the GCC manual.
   4   For copying conditions, see the copyright.rst file.
   5
   6 .. index:: GETPID, system, process ID, process ID
   7
   8 .. _getpid:
   9
  10 GETPID --- Process ID function
  11 ******************************
  12
  13 .. function:: GETPID()
  14
  15   Returns the numerical process identifier of the current process.
  16
  17   :return:
  18     The return value of ``GETPID`` is an ``INTEGER`` of the default
  19     kind.
  20
  21   Standard:
  22     GNU extension
  23
  24   Class:
  25     Function
  26
  27   Syntax:
  28     .. code-block:: fortran
  29
  30       RESULT = GETPID()
  31
  32   Example:
  33     .. code-block:: fortran
  34
  35       program info
  36         print *, "The current process ID is ", getpid()
  37         print *, "Your numerical user ID is ", getuid()
  38         print *, "Your numerical group ID is ", getgid()
  39       end program info
  40
  41   See also:
  42     :ref:`GETGID`,
  43     :ref:`GETUID`