explain_eventfd_or_die(3) [debian man page]

explain_eventfd_or_die(3)				     Library Functions Manual					 explain_eventfd_or_die(3)

NAME

       explain_eventfd_or_die - create event notify file descriptor and report errors

SYNOPSIS

       #include <libexplain/eventfd.h>
       int explain_eventfd_or_die(unsigned int initval, int flags);
       int explain_eventfd_on_error(unsigned int initval, int flags);

DESCRIPTION

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

       The explain_eventfd_on_error function is used to call the eventfd(2) system call. On failure an explanation  will  be  printed  to  stderr,
       obtained from the explain_eventfd(3) function, but still returns to the caller.

       initval The initval, exactly as to be passed to the eventfd(2) system call.

       flags   The flags, exactly as to be passed to the eventfd(2) system call.

RETURN VALUE

       The  explain_eventfd_or_die  function  only  returns on success, see eventfd(2) for more information. On failure, prints an explanation and
       exits, it does not return.

       The explain_eventfd_on_error function always returns the value return by the wrapped eventfd(2) system call.

EXAMPLE

       The explain_eventfd_or_die function is intended to be used in a fashion similar to the following example:
	      int result = explain_eventfd_or_die(initval, flags);

SEE ALSO

       eventfd(2)
	       create a file descriptor for event notification

       explain_eventfd(3)
	       explain eventfd(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

															 explain_eventfd_or_die(3)

explain_pclose_or_die(3)				     Library Functions Manual					  explain_pclose_or_die(3)

NAME

       explain_pclose_or_die - process I/O and report errors

SYNOPSIS

       #include <libexplain/pclose.h>
       int explain_pclose_or_die(FILE *fp);
       int explain_pclose_success(FILE *fp);
       void explain_pclose_success_or_die(FILE *fp);

DESCRIPTION

       These functions may be used to wait for program termination, and then reprt errors returned by the pclose(3) system call.

   explain_pclose_or_die
       int explain_pclose_or_die(FILE *fp);

       The  explain_pclose_or_die  function  is  used  to  call  the  pclose(3) system call.  On failure an explanation will be printed to stderr,
       obtained from explain_pclose(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:
	      int status = explain_pclose_or_die(fp);

       fp      The fp, exactly as to be passed to the pclose(3) system call.

       Returns:
	       This function only returns on success, see pclose(3) for more information.  On failure, prints an explanation and exits.

   explain_pclose_success_or_die
       void explain_pclose_success_or_die(FILE *);

       The explain_pclose_success_or_die function is used to call the pclose(3) system call.  On failure, including any  exit  status  other  than
       EXIT_SUCCESS,  an  explanation  will  be  printed  to  stderr,  obtained from explain_pclose(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_pclose_success_or_die(fp);

       fp      The fp, exactly as to be passed to the pclose(3) system call.

       Returns:
	       This function only returns on success.  On failure, prints an explanation and exits.

   explain_pclose_success
       int explain_pclose_success(FILE *fp);

       The explain_pclose_success function is used to call the pclose(3) system call.  On failure, including any exit status other than  EXIT_SUC-
       CESS,  an explanation will be printed to stderr, obtained from explain_pclose(3).  However, the priniting of an error message does not also
       cause exit(2) to be called.

       This function is intended to be used in a fashion similar to the following example:
	      int status = explain_pclose_success(command);

       fp      The fp, exactly as to be passed to the pclose(3) system call.

       Returns:
	       the value returned by the pclose(3) system call.  In all cases other than EXIT_SUCCESS,	an  error  message  will  also	have  been
	       printed to stderr.

SEE ALSO

       pclose(3)
	       process I/O

       explain_pclose(3)
	       explain pclose(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

															  explain_pclose_or_die(3)