debian man page for explain_wait4_or_die

explain_wait4_or_die(3) 				     Library Functions Manual					   explain_wait4_or_die(3)

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 0.52
       Copyright (C) 2008 Peter Miller

															   explain_wait4_or_die(3)