# HG changeset patch
# User Francisco J Ballesteros <nemo.mbox@gmail.com>
# Date 1317751427 0
# Node ID cdc421aa99b2a65fb40571e86fa6d4342edbb500
# Parent  e675e51ce089f6ce5f61ad08a90ab2381dd8ca50
thread: make Channel an implementation type.
Declare it as an incomplete type. That way we
can use Channel* as incomplete, needed by liberror.

R=nix-dev, rminnich
CC=nix-dev
http://codereview.appspot.com/5150051

diff -r e675e51ce089 -r cdc421aa99b2 sys/include/thread.h
--- a/sys/include/thread.h	Tue Oct 04 18:02:48 2011 +0000
+++ b/sys/include/thread.h	Tue Oct 04 18:03:47 2011 +0000
@@ -6,6 +6,7 @@
 typedef struct Alt	Alt;
 typedef struct Channel	Channel;
 typedef struct Ref	Ref;
+#pragma incomplete	Channel
 
 /*
  * Channel structure.  S is the size of the buffer.  For unbuffered channels
@@ -20,18 +21,6 @@
 	Nqbits = (1 << Nqshift) * 2,
 };
 
-struct Channel {
-	int	s;		/* Size of the channel (may be zero) */
-	uint	f;		/* Extraction point (insertion pt: (f+n) % s) */
-	uint	n;		/* Number of values in the channel */
-	int	e;		/* Element size */
-	int	freed;		/* Set when channel is being deleted */
-	volatile Alt **qentry;	/* Receivers/senders waiting (malloc) */
-	volatile int nentry;	/* # of entries malloc-ed */
-	volatile int closed;	/* channel is closed */
-	uchar	v[1];		/* Array of s values in the channel */
-};
-
 
 /* Channel operations for alt: */
 typedef enum {
diff -r e675e51ce089 -r cdc421aa99b2 sys/src/libthread/threadimpl.h
--- a/sys/src/libthread/threadimpl.h	Tue Oct 04 18:02:48 2011 +0000
+++ b/sys/src/libthread/threadimpl.h	Tue Oct 04 18:03:47 2011 +0000
@@ -26,6 +26,18 @@
 typedef struct Execargs	Execargs;
 typedef struct Proc		Proc;
 
+struct Channel {
+	int	s;		/* Size of the channel (may be zero) */
+	uint	f;		/* Extraction point (insertion pt: (f+n) % s) */
+	uint	n;		/* Number of values in the channel */
+	int	e;		/* Element size */
+	int	freed;		/* Set when channel is being deleted */
+	volatile Alt **qentry;	/* Receivers/senders waiting (malloc) */
+	volatile int nentry;	/* # of entries malloc-ed */
+	volatile int closed;	/* channel is closed */
+	uchar	v[1];		/* Array of s values in the channel */
+};
+
 /* must match list in sched.c */
 typedef enum
 {