Rework C source files to avoid ^(

[gnu-emacs] / src / w32xfns.c

diff --git a/src/w32xfns.c b/src/w32xfns.c
index 018dd14cb80f1475f51f88d56b3bea3252d56841..04bf5ce733e45dcb57a1e58a63dc83e6cf1c7a44 100644 (file)
--- a/src/w32xfns.c
+++ b/src/w32xfns.c
@@ -1,12 +1,13 @@
 /* Functions taken directly from X sources for use with the Microsoft Windows API.
-   Copyright (C) 1989, 1992-1995, 1999, 2001-2012  Free Software Foundation, Inc.
+   Copyright (C) 1989, 1992-1995, 1999, 2001-2016 Free Software
+   Foundation, Inc.
 
 This file is part of GNU Emacs.
 
 GNU Emacs is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
 
 GNU Emacs is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -19,20 +20,22 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <config.h>
 #include <signal.h>
 #include <stdio.h>
+#include <windows.h>
+#include <windowsx.h>
+
 #include "lisp.h"
-#include "keyboard.h"
 #include "frame.h"
-#include "charset.h"
-#include "fontset.h"
-#include "blockinput.h"
 #include "w32term.h"
-#include "windowsx.h"
 
 #define myalloc(cb) GlobalAllocPtr (GPTR, cb)
 #define myfree(lp) GlobalFreePtr (lp)
 
 CRITICAL_SECTION critsect;
+
+#ifdef WINDOWSNT
 extern HANDLE keyboard_handle;
+#endif /* WINDOWSNT */
+
 HANDLE input_available = NULL;
 HANDLE interrupt_handle = NULL;
 
@@ -43,7 +46,11 @@ init_crit (void)
 
   /* For safety, input_available should only be reset by get_next_msg
      when the input queue is empty, so make it a manual reset event. */
-  keyboard_handle = input_available = CreateEvent (NULL, TRUE, FALSE, NULL);
+  input_available = CreateEvent (NULL, TRUE, FALSE, NULL);
+
+#ifdef WINDOWSNT
+  keyboard_handle = input_available;
+#endif /* WINDOWSNT */
 
   /* interrupt_handle is signaled when quit (C-g) is detected, so that
      blocking system calls can be interrupted.  We make it a manual
@@ -80,9 +87,9 @@ signal_quit (void)
 }
 
 void
-select_palette (FRAME_PTR f, HDC hdc)
+select_palette (struct frame *f, HDC hdc)
 {
-  struct w32_display_info *display_info = FRAME_W32_DISPLAY_INFO (f);
+  struct w32_display_info *display_info = FRAME_DISPLAY_INFO (f);
 
   if (!display_info->has_palette)
     return;
@@ -107,7 +114,7 @@ select_palette (FRAME_PTR f, HDC hdc)
 }
 
 void
-deselect_palette (FRAME_PTR f, HDC hdc)
+deselect_palette (struct frame *f, HDC hdc)
 {
   if (f->output_data.w32->old_palette)
     SelectPalette (hdc, f->output_data.w32->old_palette, FALSE);
@@ -116,7 +123,7 @@ deselect_palette (FRAME_PTR f, HDC hdc)
 /* Get a DC for frame and select palette for drawing; force an update of
    all frames if palette's mapping changes.  */
 HDC
-get_frame_dc (FRAME_PTR f)
+get_frame_dc (struct frame *f)
 {
   HDC hdc;
 
@@ -136,7 +143,7 @@ get_frame_dc (FRAME_PTR f)
 }
 
 int
-release_frame_dc (FRAME_PTR f, HDC hdc)
+release_frame_dc (struct frame *f, HDC hdc)
 {
   int ret;
 
@@ -240,6 +247,22 @@ get_next_msg (W32Msg * lpmsg, BOOL bWait)
   return (bRet);
 }
 
+extern char * w32_strerror (int error_no);
+
+/* Tell the main thread that we have input available; if the main
+   thread is blocked in select(), we wake it up here.  */
+static void
+notify_msg_ready (void)
+{
+  SetEvent (input_available);
+
+#ifdef CYGWIN
+  /* Wakes up the main thread, which is blocked select()ing for /dev/windows,
+     among other files.  */
+  (void) PostThreadMessage (dwMainThreadId, WM_EMACS_INPUT_READY, 0, 0);
+#endif /* CYGWIN */
+}
+
 BOOL
 post_msg (W32Msg * lpmsg)
 {
@@ -263,8 +286,7 @@ post_msg (W32Msg * lpmsg)
     }
 
   lpTail = lpNew;
-  SetEvent (input_available);
-
+  notify_msg_ready ();
   leave_crit ();
 
   return (TRUE);
@@ -285,26 +307,26 @@ prepend_msg (W32Msg *lpmsg)
   nQueue++;
   lpNew->lpNext = lpHead;
   lpHead = lpNew;
-
+  notify_msg_ready ();
   leave_crit ();
 
   return (TRUE);
 }
 
-/* Process all messages in the current thread's queue.  */
-void
+/* Process all messages in the current thread's queue.  Value is 1 if
+   one of these messages was WM_EMACS_FILENOTIFY, zero otherwise.  */
+int
 drain_message_queue (void)
 {
   MSG msg;
+  int retval = 0;
+
   while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
     {
+      if (msg.message == WM_EMACS_FILENOTIFY)
+       retval = 1;
       TranslateMessage (&msg);
       DispatchMessage (&msg);
     }
-}
-
-/* x_sync is a no-op on W32.  */
-void
-x_sync (struct frame *f)
-{
+  return retval;
 }