PerlFAQ sync.

[p5sagit/p5-mst-13.2.git] / pod / perlthrtut.pod

diff --git a/pod/perlthrtut.pod b/pod/perlthrtut.pod
index 7cac46f..8e4e4f6 100644 (file)
--- a/pod/perlthrtut.pod
+++ b/pod/perlthrtut.pod
@@ -602,7 +602,7 @@ communications between threads.
 =head2 Semaphores: Synchronizing Data Access
 
 Semaphores are a kind of generic locking mechanism. In their most basic
-form, they behave very much like lockable scalars, except that thay
+form, they behave very much like lockable scalars, except that they
 can't hold data, and that they must be explicitly unlocked. In their
 advanced form, they act like a kind of counter, and can allow multiple
 threads to have the 'lock' at any one time.
@@ -985,9 +985,10 @@ Further examples of process-scope changes include umask() and
 changing uids/gids.
 
 Thinking of mixing fork() and threads?  Please lie down and wait
-until the feeling passes-- but in case you really want to know,
-the semantics is that fork() duplicates all the threads.
-(In UNIX, at least, other platforms will do something different.)
+until the feeling passes.  Be aware that the semantics of fork() vary
+between platforms.  For example, some UNIX systems copy all the current
+threads into the child process, while others only copy the thread that
+called fork(). You have been warned!
 
 Similarly, mixing signals and threads should not be attempted.
 Implementations are platform-dependent, and even the POSIX