set_thread_area: Nastavte oblast TLS (Thread Local Storage)

Originální popis anglicky: set_thread_area - Set a Thread Local Storage (TLS) area

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <linux/unistd.h> #include <asm/ldt.h> int set_thread_area (struct user_desc *u_info);

POPIS / INSTRUKCE

set_thread_area sets an entry in the current thread's Thread Local Storage (TLS) array. The TLS array entry set by set_thread_area corresponds to the value of u_info->entry_number passed in by the user. If this value is in bounds, set_thread_area copies the TLS descriptor pointed to by u_info into the thread's TLS array. When set_thread_area is passed an entry_number of -1, it uses a free TLS entry. If set_thread_area finds a free TLS entry, the value of u_info->entry_number is set upon return to show which entry was changed.

NÁVRATOVÁ HODNOTA

set_thread_area returns 0 on success, and -1 on failure, with errno set appropriately.

CHYBY / ERRORY

EINVAL

u_info->entry_number is out of bounds.

EFAULT

u_info is an invalid pointer.

ESRCH

A free TLS entry could not be located.

 

ODPOVÍDAJÍCÍ

set_thread_area is Linux specific and should not be used in programs that are intended to be portable.

VERSIONS

A version of set_thread_area first appeared in Linux 2.5.29.

SOUVISEJÍCÍ

get_thread_area(2).