.\" Copyright (c) 2016 The FreeBSD Foundation, Inc.
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.\" This documentation was written by
.\" Konstantin Belousov <kib@FreeBSD.org> under sponsorship
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.Dd May 5, 2020
.Dt THR_EXIT 2
.Nd terminate current thread
.Fn thr_exit "long *state"
This function is intended for implementing threading.
Normal applications should call
.Xr pthread_exit 3
system call terminates the current kernel-scheduled thread.
argument is not
.Dv NULL ,
the location pointed to by the argument is
updated with an arbitrary non-zero value, and an
.Xr _umtx_op 2
operation is consequently performed on the location.
Attempts to terminate the last thread in the process are silently ignored.
.Xr _exit 2
syscall to terminate the process.
.Sh RETURN VALUES
The function does not return a value.
A return from the function indicates that the calling thread was the
last one in the process.
.Sh SEE ALSO
.Xr _exit 2 ,
.Xr thr_kill 2 ,
.Xr thr_kill2 2 ,
.Xr thr_new 2 ,
.Xr thr_self 2 ,
.Xr thr_set_name 2 ,
.Xr _umtx_op 2 ,
.Xr pthread_exit 3
system call is non-standard and is used by
.Xr pthread 3
system call first appeared in
.Fx 5.2 .