From 9f82de59a07da145c177648fe474f19cd9def7a1 Mon Sep 17 00:00:00 2001
From: John Hood <cgull@glup.org>
Date: Sat, 30 Jan 2016 17:37:33 -0500
Subject: [PATCH] Debug printfs.

	* fhandler.cc (fhandler_base::get_readahead): Add debug code.
	* fhandler_console.cc (fhandler_console::read): Add debug code.
	* select.cc (pselect): Add debug code.
	(peek_console): Add debug code.
---
 winsup/cygwin/fhandler.cc         |  1 +
 winsup/cygwin/fhandler_console.cc | 10 +++++++++-
 winsup/cygwin/select.cc           | 12 +++++++++++-
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc
index 33743d44d..86f77c3e8 100644
--- a/winsup/cygwin/fhandler.cc
+++ b/winsup/cygwin/fhandler.cc
@@ -90,6 +90,7 @@ fhandler_base::get_readahead ()
   /* FIXME - not thread safe */
   if (raixget >= ralen)
     raixget = raixput = ralen = 0;
+  debug_printf("available: %d", chret > -1);
   return chret;
 }
 
diff --git a/winsup/cygwin/fhandler_console.cc b/winsup/cygwin/fhandler_console.cc
index c510d7021..e0e2813ad 100644
--- a/winsup/cygwin/fhandler_console.cc
+++ b/winsup/cygwin/fhandler_console.cc
@@ -309,6 +309,8 @@ fhandler_console::read (void *pv, size_t& buflen)
   int ch;
   set_input_state ();
 
+  debug_printf("requested buflen %d", buflen);
+
   /* Check console read-ahead buffer filled from terminal requests */
   if (con.cons_rapoi && *con.cons_rapoi)
     {
@@ -318,6 +320,7 @@ fhandler_console::read (void *pv, size_t& buflen)
     }
 
   int copied_chars = get_readahead_into_buffer (buf, buflen);
+  debug_printf("copied_chars %d", copied_chars);
 
   if (copied_chars)
     {
@@ -695,9 +698,11 @@ fhandler_console::read (void *pv, size_t& buflen)
 	  continue;
 	}
 
+      debug_printf("toadd = %p, nread = %d", toadd, nread);
       if (toadd)
 	{
-	  line_edit_status res = line_edit (toadd, nread, ti);
+	  ssize_t bytes_read;
+	  line_edit_status res = line_edit (toadd, nread, ti, &bytes_read);
 	  if (res == line_edit_signalled)
 	    goto sig_exit;
 	  else if (res == line_edit_input_done)
@@ -705,6 +710,8 @@ fhandler_console::read (void *pv, size_t& buflen)
 	}
     }
 
+  debug_printf("ralen = %d, bytes = %d", ralen, ralen - raixget);
+
   while (buflen)
     if ((ch = get_readahead ()) < 0)
       break;
@@ -716,6 +723,7 @@ fhandler_console::read (void *pv, size_t& buflen)
 #undef buf
 
   buflen = copied_chars;
+  debug_printf("buflen set to %d", buflen);
   return;
 
 err:
diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc
index 10205a051..25b0c5a98 100644
--- a/winsup/cygwin/select.cc
+++ b/winsup/cygwin/select.cc
@@ -925,18 +925,28 @@ peek_console (select_record *me, bool)
 	    if (irec.Event.KeyEvent.bKeyDown
 		&& (irec.Event.KeyEvent.uChar.AsciiChar
 		    || fhandler_console::get_nonascii_key (irec, tmpbuf)))
-	      return me->read_ready = true;
+	      {
+		debug_printf("peeked KEY_EVENT");
+		return me->read_ready = true;
+	      }
 	  }
 	else
 	  {
 	    if (irec.EventType == MOUSE_EVENT
 		&& fh->mouse_aware (irec.Event.MouseEvent))
+	      {
+		debug_printf("peeked MOUSE_EVENT");
 		return me->read_ready = true;
+	      }
 	    if (irec.EventType == FOCUS_EVENT && fh->focus_aware ())
+	      {
+		debug_printf("peeked FOCUS_EVENT");
 		return me->read_ready = true;
+	      }
 	  }
 
 	/* Read and discard the event */
+	debug_printf("discarded other event");
 	ReadConsoleInput (h, &irec, 1, &events_read);
       }