winblock.c revision 35c4bbdf 
1/*
2 *Copyright (C) 2001-2004 Harold L Hunt II All Rights Reserved.
3 *
4 *Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 *"Software"), to deal in the Software without restriction, including
7 *without limitation the rights to use, copy, modify, merge, publish,
8 *distribute, sublicense, and/or sell copies of the Software, and to
9 *permit persons to whom the Software is furnished to do so, subject to
10 *the following conditions:
11 *
12 *The above copyright notice and this permission notice shall be
13 *included in all copies or substantial portions of the Software.
14 *
15 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 *NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
19 *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
20 *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21 *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 *Except as contained in this notice, the name of Harold L Hunt II
24 *shall not be used in advertising or otherwise to promote the sale, use
25 *or other dealings in this Software without prior written authorization
26 *from Harold L Hunt II.
27 *
28 * Authors:	Harold L Hunt II
29 */
30
31#ifdef HAVE_XWIN_CONFIG_H
32#include <xwin-config.h>
33#endif
34#include "win.h"
35#include "winmsg.h"
36
37/* See Porting Layer Definition - p. 6 */
38void
39winBlockHandler(ScreenPtr pScreen,
40                void *pTimeout, void *pReadMask)
41{
42#if defined(XWIN_CLIPBOARD) || defined(XWIN_MULTIWINDOW)
43    winScreenPriv(pScreen);
44#endif
45
46#ifndef HAS_DEVWINDOWS
47    struct timeval **tvp = pTimeout;
48
49    if (*tvp != NULL) {
50      if (GetQueueStatus(QS_ALLINPUT | QS_ALLPOSTMESSAGE) != 0) {
51        /* If there are still messages to process on the Windows message
52           queue, make sure select() just polls rather than blocking.
53        */
54        (*tvp)->tv_sec = 0;
55        (*tvp)->tv_usec = 0;
56      }
57      else {
58        /* Otherwise, lacking /dev/windows, we must wake up again in
59           a reasonable time to check the Windows message queue. without
60           noticeable delay.
61         */
62        (*tvp)->tv_sec = 0;
63        (*tvp)->tv_usec = 100;
64      }
65    }
66#endif
67
68#if defined(XWIN_CLIPBOARD) || defined(XWIN_MULTIWINDOW)
69    /* Signal threaded modules to begin */
70    if (pScreenPriv != NULL && !pScreenPriv->fServerStarted) {
71        int iReturn;
72
73        ErrorF("winBlockHandler - pthread_mutex_unlock()\n");
74
75        /* Flag that modules are to be started */
76        pScreenPriv->fServerStarted = TRUE;
77
78        /* Unlock the mutex for threaded modules */
79        iReturn = pthread_mutex_unlock(&pScreenPriv->pmServerStarted);
80        if (iReturn != 0) {
81            ErrorF("winBlockHandler - pthread_mutex_unlock () failed: %d\n",
82                   iReturn);
83        }
84        else {
85            winDebug("winBlockHandler - pthread_mutex_unlock () returned\n");
86        }
87    }
88#endif
89
90  /*
91    At least one X client has asked to suspend the screensaver, so
92    reset Windows' display idle timer
93  */
94#ifdef SCREENSAVER
95  if (screenSaverSuspended)
96    SetThreadExecutionState(ES_DISPLAY_REQUIRED);
97#endif
98}
99