Updated: 2022/Sep/29

Please read Privacy Policy. It's for your privacy.

_LWP_GETPRIVATE(2)            System Calls Manual           _LWP_GETPRIVATE(2)

NAME
     _lwp_getprivate, _lwp_setprivate - get and set light-weight process
     private data

LIBRARY
     Standard C Library (libc, -lc)

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 %fs register is set to the pointer so that the
            private data can be accessed using the selector.

     i386   The base address of %gs register is set to the pointer so that the
            private data can be accessed using the selector.

     sparc  %g7 register 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
     _lwp_makecontext(3)

HISTORY
     The _lwp_getprivate() and _lwp_setprivate() system calls first appeared
     in NetBSD 2.0.

NetBSD 10.99                   September 7, 2013                  NetBSD 10.99