---
name: "explain_timerfd_create_or_die"
section: "3"
platform: "linux"
package: "libexplain-dev"
version: "1.4.D001-16"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/explain_timerfd_create_or_die"
---

# explain\_timerfd\_create\_or\_die(3)

create file descriptor timers and report errors

## NAME

explain\_timerfd\_create\_or\_die - create file descriptor timers and report errors

## SYNOPSIS

\#include \<libexplain/timerfd\_create.h\>

int explain\_timerfd\_create\_or\_die(int clockid, int flags);\
 int explain\_timerfd\_create\_on\_error(int clockid, int flags);

## DESCRIPTION

The **explain\_timerfd\_create\_or\_die** function is used to call the [*timerfd\_create*(2)](/timerfd_create/2.md) system call. On failure an explanation will be printed to *stderr*, obtained from the [*explain\_timerfd\_create*(3)](/explain_timerfd_create/3.md) function, and then the process terminates by calling `exit(EXIT_FAILURE)`.

The **explain\_timerfd\_create\_on\_error** function is used to call the [*timerfd\_create*(2)](/timerfd_create/2.md) system call. On failure an explanation will be printed to *stderr*, obtained from the [*explain\_timerfd\_create*(3)](/explain_timerfd_create/3.md) function, but still returns to the caller.

- *clockid*

  The clockid, exactly as to be passed to the [*timerfd\_create*(2)](/timerfd_create/2.md) system call.

- *flags*

  The flags, exactly as to be passed to the [*timerfd\_create*(2)](/timerfd_create/2.md) system call.

## RETURN VALUE

The **explain\_timerfd\_create\_or\_die** function only returns on success, see [*timerfd\_create*(2)](/timerfd_create/2.md) for more information. On failure, prints an explanation and exits, it does not return.

The **explain\_timerfd\_create\_on\_error** function always returns the value return by the wrapped [*timerfd\_create*(2)](/timerfd_create/2.md) system call.

## EXAMPLE

The **explain\_timerfd\_create\_or\_die** function is intended to be used in a fashion similar to the following example:

```
int result = explain_timerfd_create_or_die(clockid, flags);
```

## SEE ALSO

- [*timerfd\_create*(2)](/timerfd_create/2.md)

  timers that notify via file descriptors

- [*explain\_timerfd\_create*(3)](/explain_timerfd_create/3.md)

  explain [*timerfd\_create*(2)](/timerfd_create/2.md) errors

- [*exit*(2)](/exit/2.md)

  terminate the calling process

## COPYRIGHT

libexplain version 1.4\
 Copyright (C) 2009 Peter Miller