NAME

     thr_self — return thread identifier for the calling thread

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/thr.h>

     int
     thr_self(long *id);

DESCRIPTION

     The thr_self() system call stores the system-wide thread identifier for the current kernel-
     scheduled thread in the variable pointed by the argument id.

     The thread identifier is an integer in the range from PID_MAX + 2 (10002) to INT_MAX.  The
     thread identifier is guaranteed to be unique at any given time, for each running thread in
     the system.  After the thread exits, the identifier may be reused.

RETURN VALUES

     If successful, thr_self() will return zero, otherwise -1 is returned, and errno is set to
     indicate the error.

ERRORS

     The thr_self() operation may return the following errors:

     [EFAULT]           The memory pointed to by the id argument is not valid.

SEE ALSO

     thr_exit(2), thr_kill(2), thr_kill2(2), thr_new(2), thr_set_name(2), _umtx_op(2),
     pthread_getthreadid_np(3), pthread_self(3)

STANDARDS

     The thr_self() system call is non-standard and is used by 1:1 Threading Library (libthr,
     -lthr) to implement IEEE Std 1003.1-2001 (“POSIX.1”) pthread(3) functionality.