* fhandler.h (fhandler_tty_slave::archetype): Make public.

(report_tty_counts): New macro.  Use throughout for reporting tty use counts.
* dtable.cc (dtable::vfork_child_dup): Add debugging output for usecount
increment.  Increment open_fhs if appropriate.
(dtable::vfork_parent_restore): "Close" artificially bumped ctty.
(dtable::vfork_child_fixup): Close ctty since it was bumped prior to vfork.
Save open_fhs around close since the closing of these handles has no effect on
the console.
* fhandler_tty.cc (fhandler_tty_slave::open): Reorganize calls to allow for
easier tracking of usecount modification.
(fhandler_tty_slave::open): Ditto.

6 files changed, 47 insertions, 16 deletions

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 3452248..b838327 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,18 @@
+2003-12-27  Christopher Faylor  <cgf@redhat.com>
+
+	* fhandler.h (fhandler_tty_slave::archetype): Make public.
+	(report_tty_counts): New macro.  Use throughout for reporting tty use
+	counts.
+	* dtable.cc (dtable::vfork_child_dup): Add debugging output for
+	usecount increment.  Increment open_fhs if appropriate.
+	(dtable::vfork_parent_restore): "Close" artificially bumped ctty.
+	(dtable::vfork_child_fixup): Close ctty since it was bumped prior to
+	vfork.  Save open_fhs around close since the closing of these handles
+	has no effect on the console.
+	* fhandler_tty.cc (fhandler_tty_slave::open): Reorganize calls to allow
+	for easier tracking of usecount modification.
+	(fhandler_tty_slave::open): Ditto.
+
 2003-12-26  Christopher Faylor  <cgf@redhat.com>
 
 	* syscalls.cc (close_all_files): Simplify logic around closing ctty.
diff --git a/winsup/cygwin/cygheap.cc b/winsup/cygwin/cygheap.cc
index 16a95f4..54b645f 100644
--- a/winsup/cygwin/cygheap.cc
+++ b/winsup/cygwin/cygheap.cc
@@ -215,9 +215,7 @@ cygheap_init ()
   if (cygheap->ctty)
     {
       fhandler_console::open_fhs++;
-      debug_printf ("tty%d, open_fhs %d, arch usecount %d",
-		    cygheap->ctty->get_ttyp ()->ntty,
-		    fhandler_console::open_fhs, cygheap->ctty->usecount);
+      report_tty_counts (cygheap->ctty, "inherited", "incremented ", "unchanged ");
     }
 }
 
diff --git a/winsup/cygwin/dtable.cc b/winsup/cygwin/dtable.cc
index b4c5db0..a7095c5 100644
--- a/winsup/cygwin/dtable.cc
+++ b/winsup/cygwin/dtable.cc
@@ -31,6 +31,7 @@ details. */
 #include "dtable.h"
 #include "cygheap.h"
 #include "ntdll.h"
+#include "tty.h"
 
 static const NO_COPY DWORD std_consts[] = {STD_INPUT_HANDLE, STD_OUTPUT_HANDLE,
 					   STD_ERROR_HANDLE};
@@ -701,7 +702,11 @@ dtable::vfork_child_dup ()
   /* Remove impersonation */
   cygheap->user.deimpersonate ();
   if (cygheap->ctty)
-    cygheap->ctty->usecount++;
+    {
+      cygheap->ctty->usecount++;
+      fhandler_console::open_fhs++;
+      report_tty_counts (cygheap->ctty, "vfork dup", "incremented ", "");
+    }
 
   for (size_t i = 0; i < size; i++)
     if (not_open (i))
@@ -737,6 +742,9 @@ dtable::vfork_parent_restore ()
   fds_on_hold = NULL;
   cfree (deleteme);
 
+  if (cygheap->ctty)
+    cygheap->ctty->close ();
+
   ReleaseResourceLock (LOCK_FD_LIST, WRITE_LOCK | READ_LOCK, "restore");
   return;
 }
@@ -750,6 +758,7 @@ dtable::vfork_child_fixup ()
   fhandler_base **saveme = fds;
   fds = fds_on_hold;
 
+  int old_open_fhs = fhandler_console::open_fhs;
   fhandler_base *fh;
   for (int i = 0; i < (int) size; i++)
     if ((fh = fds[i]) != NULL)
@@ -764,6 +773,10 @@ dtable::vfork_child_fixup ()
 	  }
       }
 
+  fhandler_console::open_fhs = old_open_fhs;
+  if (cygheap->ctty)
+    cygheap->ctty->close ();
+
   fds = saveme;
   cfree (fds_on_hold);
   fds_on_hold = NULL;
diff --git a/winsup/cygwin/fhandler.h b/winsup/cygwin/fhandler.h
index 5cbf387..a064e24 100644
--- a/winsup/cygwin/fhandler.h
+++ b/winsup/cygwin/fhandler.h
@@ -122,9 +122,9 @@ class fhandler_base
   DWORD fs_flags;
   HANDLE read_state;
   path_conv pc;
-  class fhandler_base *archetype;
 
  public:
+  class fhandler_base *archetype;
   int usecount;
 
   void set_name (path_conv &pc);
@@ -1194,6 +1194,12 @@ struct fhandler_nodevice: public fhandler_base
   // int __stdcall fstat (struct __stat64 *buf, path_conv *);
 };
 
+#define report_tty_counts(fh, call, fhs_op, use_op) \
+  termios_printf ("%s %s, %sopen_fhs %d, %susecount %d",\
+		  fh->ttyname (), call,\
+		  fhs_op, fhandler_console::open_fhs,\
+		  use_op, ((fhandler_tty_slave *) fh)->archetype->usecount);
+
 typedef union
 {
   char __base[sizeof (fhandler_base)];
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index ff1d48f..69d03a9 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -601,9 +601,8 @@ fhandler_tty_slave::open (int flags, mode_t)
 out:
   usecount = 0;
   archetype->usecount++;
+  report_tty_counts (this, "opened", "incremented ", "");
   myself->set_ctty (get_ttyp (), flags, arch);
-  termios_printf ("%s opened, incremented open_fhs %d, archetype usecount %d",
-		  pc.dev.name, fhandler_console::open_fhs, archetype->usecount);
 
   return 1;
 }
@@ -613,9 +612,11 @@ fhandler_tty_slave::close ()
 {
   if (!--fhandler_console::open_fhs && myself->ctty == -1)
     FreeConsole ();
-  termios_printf ("decremented open_fhs %d, archetype usecount %d",
-		  fhandler_console::open_fhs, archetype->usecount);
-  if (--archetype->usecount)
+
+  archetype->usecount--;
+  report_tty_counts (this, "closed", "decremented ", "");
+
+  if (archetype->usecount)
     {
 #ifdef DEBUGGING
       if (archetype->usecount < 0)
@@ -909,14 +910,13 @@ fhandler_tty_slave::read (void *ptr, size_t& len)
 int
 fhandler_tty_slave::dup (fhandler_base *child)
 {
-  fhandler_console::open_fhs++;
   fhandler_tty_slave *arch = (fhandler_tty_slave *) archetype;
   *(fhandler_tty_slave *) child = *arch;
-  arch->usecount++;
   child->usecount = 0;
+  arch->usecount++;
+  fhandler_console::open_fhs++;
+  report_tty_counts (child, "duped", "incremented ", "");
   myself->set_ctty (get_ttyp (), openflags, arch);
-  termios_printf ("incremented open_fhs %d, archetype usecount %d",
-		  fhandler_console::open_fhs, archetype->usecount);
   return 0;
 }
 
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index 92a9ea9..0472145 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -293,8 +293,7 @@ _pinfo::set_ctty (tty_min *tc, int flags, fhandler_tty_slave *arch)
 	    {
 	      arch->usecount++;
 	      fhandler_console::open_fhs++;
-	      debug_printf ("tty%d, open_fhs %d, arch usecount %d", tc->ntty,
-			    fhandler_console::open_fhs, arch->usecount);
+	      report_tty_counts (cygheap->ctty, "ctty", "incremented ", "");
 	    }
 	}
     }