NAME
_lwp_getprivate,
_lwp_setprivate —
get and set light-weight process
private data
LIBRARY
library “libc”
SYNOPSIS
#include
<lwp.h>
void *
_lwp_getprivate(void);
void
_lwp_setprivate(void
*ptr);
DESCRIPTION
_lwp_setprivate()
stores the pointer to private data ptr in a location
private to the LWP.
_lwp_getprivate()
returns the pointer to private data for the LWP.
Some platforms provide alternative ways
quicker than
_lwp_getprivate()
to use the pointer.
- alpha
- The pointer can be retrieved by call_pal PAL_rdunique.
- amd64
- The base address of
%fsregister is set to the pointer so that the private data can be accessed using the selector. - i386
- The base address of
%gsregister is set to the pointer so that the private data can be accessed using the selector. - sparc
%g7register is set to the pointer.
ERRORS
The _lwp_getprivate() and
_lwp_setprivate() functions are always successful,
and no return value is reserved to indicate an error.
SEE ALSO
HISTORY
The _lwp_getprivate() and
_lwp_setprivate() system calls first appeared in
NetBSD 2.0.