thr_self — return thread identifier for the calling thread

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.

The thr_self() operation may return the following errors: [EFAULT] The memory pointed to by the id argument is not valid.

Standard C Library (libc, -lc)

thr_self — return thread identifier for the calling thread

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

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)

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)

#include<sys/thr.h>intthr_self(long*id);