Developer Guide and Reference

ID 767251
Date 10/31/2024
Public
Document Table of Contents

PXFGETPID

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

Module

USE IFPOSIX

CALL PXFGETPID (ipid,ierror)

ipid

(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