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.

Debian                                            June 1, 2016                                       THR_SELF(2)