NAME

       explain_wait4_or_die - wait for process to change state and report errors

SYNOPSIS

       #include <libexplain/wait4.h>
       void explain_wait4_or_die(int pid, int *status, int options, struct rusage *rusage);

DESCRIPTION

       The explain_wait4_or_die function is used to call the wait4(2) system call.  On failure an
       explanation will be printed to  stderr,  obtained  from  explain_wait4(3),  and  then  the
       process terminates by calling exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
              explain_wait4_or_die(pid, status, options, rusage);

       pid     The pid, exactly as to be passed to the wait4(2) system call.

       status  The status, exactly as to be passed to the wait4(2) system call.

       options The options, exactly as to be passed to the wait4(2) system call.

       rusage  The rusage, exactly as to be passed to the wait4(2) system call.

       Returns:
               This  function  only  returns  on  success, see wait4(2) for more information.  On
               failure, prints an explanation and exits.

SEE ALSO

       wait4(2)
               wait for process to change state

       explain_wait4(3)
               explain wait4(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2008 Peter Miller

                                                                          explain_wait4_or_die(3)