xref: /xsrc/external/mit/xorg-server/dist/hw/xwin/winblock.c

/*
 *Copyright (C) 2001-2004 Harold L Hunt II All Rights Reserved.
 *
 *Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 *"Software"), to deal in the Software without restriction, including
 *without limitation the rights to use, copy, modify, merge, publish,
 *distribute, sublicense, and/or sell copies of the Software, and to
 *permit persons to whom the Software is furnished to do so, subject to
 *the following conditions:
 *
 *The above copyright notice and this permission notice shall be
 *included in all copies or substantial portions of the Software.
 *
 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 *Except as contained in this notice, the name of Harold L Hunt II
 *shall not be used in advertising or otherwise to promote the sale, use
 *or other dealings in this Software without prior written authorization
 *from Harold L Hunt II.
 *
 * Authors:	Harold L Hunt II
 */

#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#include "win.h"
#include "winmsg.h"


/*
 * References to external symbols
 */

extern HWND			g_hDlgDepthChange;
extern HWND			g_hDlgExit;
extern HWND			g_hDlgAbout;


/* See Porting Layer Definition - p. 6 */
void
winBlockHandler (int nScreen,
		 pointer pBlockData,
		 pointer pTimeout,
		 pointer pReadMask)
{
#if defined(XWIN_CLIPBOARD) || defined(XWIN_MULTIWINDOW)
  winScreenPriv((ScreenPtr)pBlockData);
#endif
  MSG			msg;
#ifndef HAS_DEVWINDOWS
  struct timeval **tvp = pTimeout;
  if (*tvp != NULL)
  {
    (*tvp)->tv_sec = 0;
    (*tvp)->tv_usec = 100;
  }
#endif

#if defined(XWIN_CLIPBOARD) || defined(XWIN_MULTIWINDOW)
  /* Signal threaded modules to begin */
  if (pScreenPriv != NULL && !pScreenPriv->fServerStarted)
    {
      int		iReturn;

      winDebug ("winBlockHandler - Releasing pmServerStarted\n");

      /* Flag that modules are to be started */
      pScreenPriv->fServerStarted = TRUE;

      /* Unlock the mutex for threaded modules */
      iReturn = pthread_mutex_unlock (&pScreenPriv->pmServerStarted);
      if (iReturn != 0)
	{
	  ErrorF ("winBlockHandler - pthread_mutex_unlock () failed: %d\n",
		  iReturn);
	  goto winBlockHandler_ProcessMessages;
	}

      winDebug ("winBlockHandler - pthread_mutex_unlock () returned\n");
    }

winBlockHandler_ProcessMessages:
#endif

  /* Process all messages on our queue */
  while (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
    {
      if ((g_hDlgDepthChange == 0
	   || !IsDialogMessage (g_hDlgDepthChange, &msg))
	  && (g_hDlgExit == 0
	      || !IsDialogMessage (g_hDlgExit, &msg))
	  && (g_hDlgAbout == 0
	      || !IsDialogMessage (g_hDlgAbout, &msg)))
	{
	  DispatchMessage (&msg);
	}
    }
}