Integrate mainline

[perl5.git] / pod / perldiag.pod

diff --git a/pod/perldiag.pod b/pod/perldiag.pod
index c10aa0e..a416b5a 100644 (file)
--- a/pod/perldiag.pod
+++ b/pod/perldiag.pod
@@ -44,6 +44,14 @@ letter.
 
 =over 4
 
+=item A thread exited while %d other threads were still running
+
+(W) When using threaded Perl, a thread (not necessarily the main
+thread) exited while there were still other threads running.
+Usually it's a good idea to first collect the return values of the
+created threads by joining them, and only then exit from then main
+thread.  See L<threads>.
+
 =item accept() on closed socket %s
 
 (W closed) You tried to do an accept on a closed socket.  Did you forget
@@ -809,6 +817,11 @@ the file, say, by doing C<make install>.
 functioning as a class, but that package doesn't define that particular
 method, nor does any of its base classes.  See L<perlobj>.
 
+=item Can't locate PerlIO%s
+
+(F) You tried to use in open() a PerlIO layer that does not exist,
+e.g. open(FH, ">:nosuchlayer", "somefile").
+
 =item (perhaps you forgot to load "%s"?)
 
 (F) This is an educated guess made in conjunction with the message
@@ -1134,13 +1147,6 @@ and so on) and not for Unicode characters, so Perl behaved as if you meant
 If you actually want to pack Unicode codepoints, use the C<"U"> format
 instead.
 
-=item Cleanup skipped %d active threads
-
-(W) When using threaded Perl, the main thread exited while there were
-still other threads running.  This is not a good sign: you should
-either explicitly join the threads, or somehow be certain that all
-the non-main threads have finished.  See L<threads>.
-
 =item close() on unopened filehandle %s
 
 (W unopened) You tried to close a filehandle that was never opened.
@@ -1168,6 +1174,29 @@ in the regular expression engine; or rewriting the regular expression so
 that it is simpler or backtracks less.  (See L<perlfaq2> for information
 on I<Mastering Regular Expressions>.)
 
+=item cond_broadcast() called on unlocked variable
+
+(W threads) Within a thread-enabled program, you tried to call
+cond_broadcast() on a variable which wasn't locked. The cond_broadcast()
+function  is used to wake up another thread that is waiting in a
+cond_wait(). To ensure that the signal isn't sent before the other thread
+has a chance to enter the wait, it is usual for the signaling thread to
+first wait for a lock on variable. This lock attempt will only succeed
+after the other thread has entered cond_wait() and thus relinquished the
+lock.
+
+
+=item cond_signal() called on unlocked variable
+
+(W threads) Within a thread-enabled program, you tried to call
+cond_signal() on a variable which wasn't locked. The cond_signal()
+function  is used to wake up another thread that is waiting in a
+cond_wait(). To ensure that the signal isn't sent before the other thread
+has a chance to enter the wait, it is usual for the signaling thread to
+first wait for a lock on variable. This lock attempt will only succeed
+after the other thread has entered cond_wait() and thus relinquished the
+lock.
+
 =item connect() on closed socket %s
 
 (W closed) You tried to do a connect on a closed socket.  Did you forget
@@ -1192,7 +1221,7 @@ See L<perlsub/"Constant Functions"> and L<constant>.
 
 =item Constant subroutine %s redefined
 
-(S|W redefine) You redefined a subroutine which had previously been
+(S) You redefined a subroutine which had previously been
 eligible for inlining.  See L<perlsub/"Constant Functions"> for
 commentary and workarounds.
 
@@ -3748,7 +3777,7 @@ discovered.  See L<perlre>.
 
 (F) The second argument of 3-argument open() is not among the list
 of valid modes: C<< < >>, C<< > >>, C<<< >> >>>, C<< +< >>,
-C<< +> >>, C<<< +>> >>>, C<-|>, C<|->.
+C<< +> >>, C<<< +>> >>>, C<-|>, C<|->, C<< <& >>, C<< >& >>.
 
 =item Unknown process %x sent message to prime_env_iter: %s