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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) sys- tem 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, ob- tained 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 1.3 Copyright (C) 2009 Peter Miller explain_eventfd_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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