diff options
| -rw-r--r-- | lib/libc/gen/__tfork_thread.3 | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/lib/libc/gen/__tfork_thread.3 b/lib/libc/gen/__tfork_thread.3 index 57124f3c404..2f729d29d38 100644 --- a/lib/libc/gen/__tfork_thread.3 +++ b/lib/libc/gen/__tfork_thread.3 @@ -1,4 +1,4 @@ -.\" $OpenBSD: __tfork_thread.3,v 1.1 2014/07/10 13:46:31 guenther Exp $ +.\" $OpenBSD: __tfork_thread.3,v 1.2 2014/08/31 04:06:37 guenther Exp $ .\" .\" Copyright (c) 2011 Philip Guenther <guenther@openbsd.org> .\" @@ -14,7 +14,7 @@ .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: July 10 2014 $ +.Dd $Mdocdate: August 31 2014 $ .Dt __TFORK_THREAD 3 .Os .Sh NAME @@ -26,7 +26,7 @@ .Bd -literal struct __tfork { void *tf_tcb; /* TCB address for new thread */ - pid_t *tf_tid; /* where to write child's TID */ + pid_t *tf_tid; /* where to write child's thread ID */ void *tf_stack; /* stack address for new thread */ }; .Ed @@ -55,9 +55,9 @@ The new thread's thread control block (TCB) address is set to .Em tf_tcb . If .Em tf_tid -is not NULL, the new thread's PID is returned to the user at that +is not NULL, the new thread's thread ID is returned to the user at that address, with the guarantee that this is done before returning to -userspace in either the current thread or the new thread. +userspace in either the calling thread or the new thread. If .Em tf_stack is not NULL, the new thread's stack is initialized to start at that address. @@ -83,11 +83,11 @@ However, the syscall may show up in the output of .Sh RETURN VALUES Upon successful completion, .Fn __tfork_thread -returns in the current thread the PID of new thread. +returns in the calling thread the thread ID of new thread. The .Fn __tfork syscall itself, on success, returns a value of 0 in the new thread -and returns the PID of the new thread to the current thread. +and returns the thread ID of the new thread to the calling thread. Otherwise, a value of -1 is returned, no thread is created, and the global variable .Va errno |