Raku Land

Unix::errno

zef:lizmat

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NAME

Unix::errno - Provide transparent access to errno

SYNOPSIS

use Unix::errno;  # exports errno, set_errno

set_errno(2);

say errno;              # No such file or directory (errno = 2)
say "failed: {errno}";  # failed: No such file or directory
say +errno;             # 2

DESCRIPTION

This module provides access to the errno variable that is available on all Unix-like systems. Please note that in a threaded environment such as Raku is, the value of errno is even more volatile than it has been already. For now, this issue is ignored.

CAVEATS

Since setting of any "extern" variables is not supported yet by NativeCall, the setting of errno is faked. If set_errno is called, it will set the value only in a shadow copy. That value will be returned As long as the underlying "real" errno doesn't change (at which point that value will be returned.

AUTHOR

Elizabeth Mattijsen liz@raku.rocks

Source can be located at: https://github.com/lizmat/Unix-errno . Comments and Pull Requests are welcome.

COPYRIGHT AND LICENSE

Copyright 2018, 2021 Elizabeth Mattijsen

This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.