Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

ID 767251
Date 9/08/2022
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

PXFGETPPID

POSIX Subroutine: Gets the process ID of the parent of the calling process.

Module

USE IFPOSIX

CALL PXFGETPPID (ippid,ierror)

ippid

(Output) INTEGER(4). The returned process ID.

ierror

(Output) INTEGER(4). The error status.

If successful, ierror is set to zero; otherwise, an error code.

Example
program t1 use ifposix integer(4) ipid, istat, ierror, ipid_ret, istat_ret print *," the child process will be born" call PXFFORK(IPID, IERROR) call PXFGETPID(IPID_RET,IERROR) if(IPID.EQ.0) then print *," I am a child process" print *," My child's pid is", IPID_RET call PXFGETPPID(IPID_RET,IERROR) print *," The pid of my parent is",IPID_RET print *," Now I have exited with code 0xABCD" call PXFEXIT(Z'ABCD') else print *," I am a parent process" print *," My parent pid is ", IPID_RET print *," I am creating the process with pid", IPID print *," Now I am waiting for the end of the child process" call PXFWAIT(ISTAT, IPID_RET, IERROR) print *," The child with pid ", IPID_RET," has exited" if( PXFWIFEXITED(ISTAT) ) then print *, " The child exited normally" istat_ret = IPXFWEXITSTATUS(ISTAT) print 10," The low byte of the child exit code is", istat_ret end if end if 10 FORMAT (A,Z) end program