tail head cat sleep
QR code linking to this page

Manual Pages  — DUPLOCALE

NAME

duplocale – duplicate an locale

CONTENTS

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <locale.h>

locale_t
duplocale(locale_t locale);

DESCRIPTION

Duplicates an existing locale_t returning a new locale_t that refers to the same locale values but has an independent internal state. Various functions, such as mblen(3) require a persistent state. These functions formerly used static variables and calls to them from multiple threads had undefined behavior. They now use fields in the locale_t associated with the current thread by uselocale(3). These calls are therefore only thread safe on threads with a unique per-thread locale. The locale returned by this call must be freed with freelocale(3).

SEE ALSO

freelocale(3), localeconv(3), newlocale(3), querylocale(3), uselocale(3), xlocale(3)

STANDARDS

This function conforms to IEEE Std 1003.1-2008 ("POSIX.1").

BUGS

Ideally, uselocale(3) should make a copy of the locale_t implicitly to ensure thread safety, and a copy of the global locale should be installed lazily on each thread. The FreeBSD implementation does not do this, for compatibility with Darwin.

DUPLOCALE (3) September 17, 2011

tail head cat sleep
QR code linking to this page


Please direct any comments about this manual page service to Ben Bullock. Privacy policy.

There are 10 types of people in the world: those who understand binary, and those who don't.