428261197a
Tested by ajacoutot@, krw@, shadchin@ and jasper@ on various configurations including multihead with both zaphod and xrandr.
682 lines
16 KiB
C
682 lines
16 KiB
C
/***********************************************************
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Copyright 1987, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/*****************************************************************
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* OS Dependent input routines:
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*
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* WaitForSomething
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* TimerForce, TimerSet, TimerCheck, TimerFree
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*
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*****************************************************************/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#ifdef WIN32
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#include <X11/Xwinsock.h>
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#endif
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#include <X11/Xos.h> /* for strings, fcntl, time */
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#include <errno.h>
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#include <stdio.h>
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#include <X11/X.h>
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#include "misc.h"
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#include "osdep.h"
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#include <X11/Xpoll.h>
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#include "dixstruct.h"
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#include "opaque.h"
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#ifdef DPMSExtension
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#include "dpmsproc.h"
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#endif
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#ifdef WIN32
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/* Error codes from windows sockets differ from fileio error codes */
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#undef EINTR
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#define EINTR WSAEINTR
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#undef EINVAL
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#define EINVAL WSAEINVAL
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#undef EBADF
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#define EBADF WSAENOTSOCK
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/* Windows select does not set errno. Use GetErrno as wrapper for
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WSAGetLastError */
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#define GetErrno WSAGetLastError
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#else
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/* This is just a fallback to errno to hide the differences between unix and
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Windows in the code */
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#define GetErrno() errno
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#endif
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/* like ffs, but uses fd_mask instead of int as argument, so it works
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when fd_mask is longer than an int, such as common 64-bit platforms */
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/* modifications by raphael */
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int
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mffs(fd_mask mask)
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{
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int i;
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if (!mask) return 0;
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i = 1;
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while (!(mask & 1))
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{
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i++;
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mask >>= 1;
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}
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return i;
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}
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#ifdef DPMSExtension
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#include <X11/extensions/dpmsconst.h>
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#endif
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struct _OsTimerRec {
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OsTimerPtr next;
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CARD32 expires;
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CARD32 delta;
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OsTimerCallback callback;
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pointer arg;
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};
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static void DoTimer(OsTimerPtr timer, CARD32 now, OsTimerPtr *prev);
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static void CheckAllTimers(void);
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static OsTimerPtr timers = NULL;
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/*****************
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* WaitForSomething:
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* Make the server suspend until there is
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* 1. data from clients or
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* 2. input events available or
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* 3. ddx notices something of interest (graphics
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* queue ready, etc.) or
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* 4. clients that have buffered replies/events are ready
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*
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* If the time between INPUT events is
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* greater than ScreenSaverTime, the display is turned off (or
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* saved, depending on the hardware). So, WaitForSomething()
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* has to handle this also (that's why the select() has a timeout.
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* For more info on ClientsWithInput, see ReadRequestFromClient().
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* pClientsReady is an array to store ready client->index values into.
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*****************/
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int
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WaitForSomething(int *pClientsReady)
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{
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int i;
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struct timeval waittime, *wt;
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INT32 timeout = 0;
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fd_set clientsReadable;
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fd_set clientsWritable;
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int curclient;
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int selecterr;
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int nready;
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fd_set devicesReadable;
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CARD32 now = 0;
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Bool someReady = FALSE;
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FD_ZERO(&clientsReadable);
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/* We need a while loop here to handle
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crashed connections and the screen saver timeout */
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while (1)
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{
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/* deal with any blocked jobs */
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if (workQueue)
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ProcessWorkQueue();
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if (XFD_ANYSET (&ClientsWithInput))
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{
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if (!SmartScheduleDisable)
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{
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someReady = TRUE;
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waittime.tv_sec = 0;
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waittime.tv_usec = 0;
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wt = &waittime;
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}
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else
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{
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XFD_COPYSET (&ClientsWithInput, &clientsReadable);
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break;
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}
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}
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if (someReady)
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{
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XFD_COPYSET(&AllSockets, &LastSelectMask);
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XFD_UNSET(&LastSelectMask, &ClientsWithInput);
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}
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else
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{
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wt = NULL;
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if (timers)
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{
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now = GetTimeInMillis();
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timeout = timers->expires - now;
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if (timeout > 0 && timeout > timers->delta + 250) {
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/* time has rewound. reset the timers. */
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CheckAllTimers();
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}
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if (timers) {
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timeout = timers->expires - now;
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if (timeout < 0)
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timeout = 0;
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waittime.tv_sec = timeout / MILLI_PER_SECOND;
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waittime.tv_usec = (timeout % MILLI_PER_SECOND) *
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(1000000 / MILLI_PER_SECOND);
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wt = &waittime;
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}
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}
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XFD_COPYSET(&AllSockets, &LastSelectMask);
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}
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SmartScheduleStopTimer ();
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BlockHandler((pointer)&wt, (pointer)&LastSelectMask);
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if (NewOutputPending)
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FlushAllOutput();
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/* keep this check close to select() call to minimize race */
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if (dispatchException)
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i = -1;
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else if (AnyClientsWriteBlocked)
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{
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XFD_COPYSET(&ClientsWriteBlocked, &clientsWritable);
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i = Select (MaxClients, &LastSelectMask, &clientsWritable, NULL, wt);
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}
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else
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{
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i = Select (MaxClients, &LastSelectMask, NULL, NULL, wt);
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}
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selecterr = GetErrno();
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WakeupHandler(i, (pointer)&LastSelectMask);
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SmartScheduleStartTimer ();
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if (i <= 0) /* An error or timeout occurred */
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{
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if (dispatchException)
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return 0;
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if (i < 0)
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{
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if (selecterr == EBADF) /* Some client disconnected */
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{
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CheckConnections ();
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if (! XFD_ANYSET (&AllClients))
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return 0;
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}
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else if (selecterr == EINVAL)
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{
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FatalError("WaitForSomething(): select: %s\n",
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strerror(selecterr));
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}
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else if (selecterr != EINTR && selecterr != EAGAIN)
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{
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ErrorF("WaitForSomething(): select: %s\n",
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strerror(selecterr));
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}
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}
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else if (someReady)
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{
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/*
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* If no-one else is home, bail quickly
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*/
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XFD_COPYSET(&ClientsWithInput, &LastSelectMask);
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XFD_COPYSET(&ClientsWithInput, &clientsReadable);
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break;
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}
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if (*checkForInput[0] != *checkForInput[1])
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return 0;
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if (timers)
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{
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int expired = 0;
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now = GetTimeInMillis();
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if ((int) (timers->expires - now) <= 0)
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expired = 1;
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while (timers && (int) (timers->expires - now) <= 0)
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DoTimer(timers, now, &timers);
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if (expired)
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return 0;
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}
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}
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else
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{
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fd_set tmp_set;
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if (*checkForInput[0] == *checkForInput[1]) {
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if (timers)
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{
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int expired = 0;
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now = GetTimeInMillis();
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if ((int) (timers->expires - now) <= 0)
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expired = 1;
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while (timers && (int) (timers->expires - now) <= 0)
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DoTimer(timers, now, &timers);
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if (expired)
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return 0;
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}
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}
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if (someReady)
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XFD_ORSET(&LastSelectMask, &ClientsWithInput, &LastSelectMask);
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if (AnyClientsWriteBlocked && XFD_ANYSET (&clientsWritable))
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{
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NewOutputPending = TRUE;
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XFD_ORSET(&OutputPending, &clientsWritable, &OutputPending);
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XFD_UNSET(&ClientsWriteBlocked, &clientsWritable);
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if (! XFD_ANYSET(&ClientsWriteBlocked))
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AnyClientsWriteBlocked = FALSE;
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}
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XFD_ANDSET(&devicesReadable, &LastSelectMask, &EnabledDevices);
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XFD_ANDSET(&clientsReadable, &LastSelectMask, &AllClients);
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XFD_ANDSET(&tmp_set, &LastSelectMask, &WellKnownConnections);
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if (XFD_ANYSET(&tmp_set))
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QueueWorkProc(EstablishNewConnections, NULL,
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(pointer)&LastSelectMask);
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if (XFD_ANYSET (&devicesReadable) || XFD_ANYSET (&clientsReadable))
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break;
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/* check here for DDXes that queue events during Block/Wakeup */
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if (*checkForInput[0] != *checkForInput[1])
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return 0;
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}
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}
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nready = 0;
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if (XFD_ANYSET (&clientsReadable))
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{
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#ifndef WIN32
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for (i=0; i<howmany(XFD_SETSIZE, NFDBITS); i++)
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{
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int highest_priority = 0;
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while (clientsReadable.fds_bits[i])
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{
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int client_priority, client_index;
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curclient = mffs (clientsReadable.fds_bits[i]) - 1;
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client_index = /* raphael: modified */
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ConnectionTranslation[curclient + (i * (sizeof(fd_mask) * 8))];
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#else
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int highest_priority = 0;
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fd_set savedClientsReadable;
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XFD_COPYSET(&clientsReadable, &savedClientsReadable);
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for (i = 0; i < XFD_SETCOUNT(&savedClientsReadable); i++)
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{
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int client_priority, client_index;
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curclient = XFD_FD(&savedClientsReadable, i);
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client_index = GetConnectionTranslation(curclient);
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#endif
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/* We implement "strict" priorities.
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* Only the highest priority client is returned to
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* dix. If multiple clients at the same priority are
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* ready, they are all returned. This means that an
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* aggressive client could take over the server.
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* This was not considered a big problem because
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* aggressive clients can hose the server in so many
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* other ways :)
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*/
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client_priority = clients[client_index]->priority;
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if (nready == 0 || client_priority > highest_priority)
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{
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/* Either we found the first client, or we found
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* a client whose priority is greater than all others
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* that have been found so far. Either way, we want
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* to initialize the list of clients to contain just
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* this client.
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*/
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pClientsReady[0] = client_index;
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highest_priority = client_priority;
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nready = 1;
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}
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/* the following if makes sure that multiple same-priority
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* clients get batched together
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*/
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else if (client_priority == highest_priority)
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{
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pClientsReady[nready++] = client_index;
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}
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#ifndef WIN32
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clientsReadable.fds_bits[i] &= ~(((fd_mask)1L) << curclient);
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}
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#else
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FD_CLR(curclient, &clientsReadable);
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#endif
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}
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}
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return nready;
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}
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/* If time has rewound, re-run every affected timer.
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* Timers might drop out of the list, so we have to restart every time. */
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static void
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CheckAllTimers(void)
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{
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OsTimerPtr timer;
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CARD32 now;
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start:
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now = GetTimeInMillis();
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for (timer = timers; timer; timer = timer->next) {
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if (timer->expires - now > timer->delta + 250) {
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TimerForce(timer);
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goto start;
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}
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}
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}
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static void
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DoTimer(OsTimerPtr timer, CARD32 now, OsTimerPtr *prev)
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{
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CARD32 newTime;
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*prev = timer->next;
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timer->next = NULL;
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newTime = (*timer->callback)(timer, now, timer->arg);
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if (newTime)
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TimerSet(timer, 0, newTime, timer->callback, timer->arg);
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}
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OsTimerPtr
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TimerSet(OsTimerPtr timer, int flags, CARD32 millis,
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OsTimerCallback func, pointer arg)
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{
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register OsTimerPtr *prev;
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CARD32 now = GetTimeInMillis();
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if (!timer)
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{
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timer = malloc(sizeof(struct _OsTimerRec));
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if (!timer)
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return NULL;
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}
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else
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{
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for (prev = &timers; *prev; prev = &(*prev)->next)
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{
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if (*prev == timer)
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{
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*prev = timer->next;
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if (flags & TimerForceOld)
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(void)(*timer->callback)(timer, now, timer->arg);
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break;
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}
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}
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}
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if (!millis)
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return timer;
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if (flags & TimerAbsolute) {
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timer->delta = millis - now;
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}
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else {
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timer->delta = millis;
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millis += now;
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}
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timer->expires = millis;
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timer->callback = func;
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timer->arg = arg;
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if ((int) (millis - now) <= 0)
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{
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timer->next = NULL;
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millis = (*timer->callback)(timer, now, timer->arg);
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if (!millis)
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return timer;
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}
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for (prev = &timers;
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*prev && (int) ((*prev)->expires - millis) <= 0;
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prev = &(*prev)->next)
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;
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timer->next = *prev;
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*prev = timer;
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return timer;
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}
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Bool
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TimerForce(OsTimerPtr timer)
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{
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OsTimerPtr *prev;
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for (prev = &timers; *prev; prev = &(*prev)->next)
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{
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if (*prev == timer)
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{
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DoTimer(timer, GetTimeInMillis(), prev);
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return TRUE;
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}
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}
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return FALSE;
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}
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void
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TimerCancel(OsTimerPtr timer)
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{
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OsTimerPtr *prev;
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if (!timer)
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return;
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for (prev = &timers; *prev; prev = &(*prev)->next)
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{
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if (*prev == timer)
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{
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*prev = timer->next;
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break;
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}
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}
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}
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void
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TimerFree(OsTimerPtr timer)
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{
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if (!timer)
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return;
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TimerCancel(timer);
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free(timer);
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}
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void
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TimerCheck(void)
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{
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CARD32 now = GetTimeInMillis();
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while (timers && (int) (timers->expires - now) <= 0)
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DoTimer(timers, now, &timers);
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}
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void
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TimerInit(void)
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{
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OsTimerPtr timer;
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while ((timer = timers))
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{
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timers = timer->next;
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free(timer);
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}
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}
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#ifdef DPMSExtension
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#define DPMS_CHECK_MODE(mode,time)\
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if (time > 0 && DPMSPowerLevel < mode && timeout >= time)\
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DPMSSet(serverClient, mode);
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#define DPMS_CHECK_TIMEOUT(time)\
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if (time > 0 && (time - timeout) > 0)\
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return time - timeout;
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static CARD32
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NextDPMSTimeout(INT32 timeout)
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{
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/*
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* Return the amount of time remaining until we should set
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* the next power level. Fallthroughs are intentional.
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*/
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switch (DPMSPowerLevel)
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{
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case DPMSModeOn:
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DPMS_CHECK_TIMEOUT(DPMSStandbyTime)
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case DPMSModeStandby:
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DPMS_CHECK_TIMEOUT(DPMSSuspendTime)
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case DPMSModeSuspend:
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DPMS_CHECK_TIMEOUT(DPMSOffTime)
|
|
|
|
default: /* DPMSModeOff */
|
|
return 0;
|
|
}
|
|
}
|
|
#endif /* DPMSExtension */
|
|
|
|
static CARD32
|
|
ScreenSaverTimeoutExpire(OsTimerPtr timer,CARD32 now,pointer arg)
|
|
{
|
|
INT32 timeout = now - lastDeviceEventTime.milliseconds;
|
|
CARD32 nextTimeout = 0;
|
|
|
|
#ifdef DPMSExtension
|
|
/*
|
|
* Check each mode lowest to highest, since a lower mode can
|
|
* have the same timeout as a higher one.
|
|
*/
|
|
if (DPMSEnabled)
|
|
{
|
|
DPMS_CHECK_MODE(DPMSModeOff, DPMSOffTime)
|
|
DPMS_CHECK_MODE(DPMSModeSuspend, DPMSSuspendTime)
|
|
DPMS_CHECK_MODE(DPMSModeStandby, DPMSStandbyTime)
|
|
|
|
nextTimeout = NextDPMSTimeout(timeout);
|
|
}
|
|
|
|
/*
|
|
* Only do the screensaver checks if we're not in a DPMS
|
|
* power saving mode
|
|
*/
|
|
if (DPMSPowerLevel != DPMSModeOn)
|
|
return nextTimeout;
|
|
#endif /* DPMSExtension */
|
|
|
|
if (!ScreenSaverTime)
|
|
return nextTimeout;
|
|
|
|
if (timeout < ScreenSaverTime)
|
|
{
|
|
return nextTimeout > 0 ?
|
|
min(ScreenSaverTime - timeout, nextTimeout) :
|
|
ScreenSaverTime - timeout;
|
|
}
|
|
|
|
ResetOsBuffers(); /* not ideal, but better than nothing */
|
|
dixSaveScreens(serverClient, SCREEN_SAVER_ON, ScreenSaverActive);
|
|
|
|
if (ScreenSaverInterval > 0)
|
|
{
|
|
nextTimeout = nextTimeout > 0 ?
|
|
min(ScreenSaverInterval, nextTimeout) :
|
|
ScreenSaverInterval;
|
|
}
|
|
|
|
return nextTimeout;
|
|
}
|
|
|
|
static OsTimerPtr ScreenSaverTimer = NULL;
|
|
|
|
void
|
|
FreeScreenSaverTimer(void)
|
|
{
|
|
if (ScreenSaverTimer) {
|
|
TimerFree(ScreenSaverTimer);
|
|
ScreenSaverTimer = NULL;
|
|
}
|
|
}
|
|
|
|
void
|
|
SetScreenSaverTimer(void)
|
|
{
|
|
CARD32 timeout = 0;
|
|
|
|
#ifdef DPMSExtension
|
|
if (DPMSEnabled)
|
|
{
|
|
/*
|
|
* A higher DPMS level has a timeout that's either less
|
|
* than or equal to that of a lower DPMS level.
|
|
*/
|
|
if (DPMSStandbyTime > 0)
|
|
timeout = DPMSStandbyTime;
|
|
|
|
else if (DPMSSuspendTime > 0)
|
|
timeout = DPMSSuspendTime;
|
|
|
|
else if (DPMSOffTime > 0)
|
|
timeout = DPMSOffTime;
|
|
}
|
|
#endif
|
|
|
|
if (ScreenSaverTime > 0)
|
|
{
|
|
timeout = timeout > 0 ?
|
|
min(ScreenSaverTime, timeout) :
|
|
ScreenSaverTime;
|
|
}
|
|
|
|
#ifdef SCREENSAVER
|
|
if (timeout && !screenSaverSuspended) {
|
|
#else
|
|
if (timeout) {
|
|
#endif
|
|
ScreenSaverTimer = TimerSet(ScreenSaverTimer, 0, timeout,
|
|
ScreenSaverTimeoutExpire, NULL);
|
|
}
|
|
else if (ScreenSaverTimer) {
|
|
FreeScreenSaverTimer();
|
|
}
|
|
}
|
|
|