getpgrp()

Get the process group

Synopsis:

#include <sys/types.h>
#include <unistd.h>

pid_t getpgrp( void );

This function is declared in <process.h>, which <unistd.h> includes.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The getpgrp() function gets the ID of the process group to which the calling process belongs.

Returns:

The calling process's process group ID.

Examples:

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>

int main( void )
  {
    printf( "I am in process group %d\n", (int) getpgrp() );
    return EXIT_SUCCESS;
  }

Classification:

POSIX 1003.1

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	Yes
Thread	Yes