30ac756798
The current SIGIO signal handler method, used at generation of input events,
has a bunch of oddities. This patch introduces an alternative way using a
thread, which is used to select() all input device file descriptors.
A mutex was used to control the access to input structures by the main and input
threads. Two pipes to emit alert events (such hotplug ones) and guarantee the
proper communication between them was also used.
Co-authored-by: Fernando Carrijo <fcarrijo@freedesktop.org>
Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com>
v2: Fix non-Xorg link. Enable where supported by default.
This also splits out the actual enabling of input threads to
DDX-specific patches which follow
v3: Make the input lock recursive
v4: Use regular RECURSIVE_MUTEXes instead of rolling our own
Respect the --disable-input-thread configuration option by
providing stubs that expose the same API/ABI.
Respond to style comments from Peter Hutterer.
v5: use __func__ in inputthread debug and error mesages.
Respond to style comments from Peter Hutterer.
v6: use AX_PTHREAD instead of inlining pthread tests.
Suggested by Emil Velikov <emil.l.velikov@gmail.com>
v7: Use pthread_sigmask instead of sigprocmask when using threads
Suggested by Adam Jackson <ajax@redhat.com>
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
144 lines
4.6 KiB
C
144 lines
4.6 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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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include "misc.h"
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#include "windowstr.h"
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#include "scrnintstr.h"
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#include "input.h"
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#include "dixfont.h"
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#include "site.h"
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#include "dixstruct.h"
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#include "os.h"
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ScreenInfo screenInfo;
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KeybdCtrl defaultKeyboardControl = {
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DEFAULT_KEYBOARD_CLICK,
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DEFAULT_BELL,
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DEFAULT_BELL_PITCH,
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DEFAULT_BELL_DURATION,
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DEFAULT_AUTOREPEAT,
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DEFAULT_AUTOREPEATS,
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DEFAULT_LEDS,
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0
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};
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PtrCtrl defaultPointerControl = {
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DEFAULT_PTR_NUMERATOR,
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DEFAULT_PTR_DENOMINATOR,
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DEFAULT_PTR_THRESHOLD,
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0
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};
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ClientPtr clients[MAXCLIENTS];
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ClientPtr serverClient;
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int currentMaxClients; /* current size of clients array */
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long maxBigRequestSize = MAX_BIG_REQUEST_SIZE;
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unsigned long globalSerialNumber = 0;
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unsigned long serverGeneration = 0;
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/* these next four are initialized in main.c */
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CARD32 ScreenSaverTime;
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CARD32 ScreenSaverInterval;
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int ScreenSaverBlanking;
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int ScreenSaverAllowExposures;
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#ifdef DPMSExtension
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CARD16 DPMSPowerLevel = 0;
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Bool DPMSDisabledSwitch = FALSE;
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Bool DPMSCapableFlag = FALSE;
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CARD32 DPMSStandbyTime;
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CARD32 DPMSSuspendTime;
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CARD32 DPMSOffTime;
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Bool DPMSEnabled;
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#endif
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CARD32 defaultScreenSaverTime = DEFAULT_SCREEN_SAVER_TIME;
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CARD32 defaultScreenSaverInterval = DEFAULT_SCREEN_SAVER_INTERVAL;
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int defaultScreenSaverBlanking = DEFAULT_SCREEN_SAVER_BLANKING;
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int defaultScreenSaverAllowExposures = DEFAULT_SCREEN_SAVER_EXPOSURES;
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#ifdef SCREENSAVER
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Bool screenSaverSuspended = FALSE;
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#endif
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const char *defaultFontPath = COMPILEDDEFAULTFONTPATH;
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const char *defaultTextFont = COMPILEDDEFAULTFONT;
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const char *defaultCursorFont = COMPILEDCURSORFONT;
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FontPtr defaultFont; /* not declared in dix.h to avoid including font.h in
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every compilation of dix code */
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CursorPtr rootCursor;
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Bool party_like_its_1989 = FALSE;
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Bool whiteRoot = FALSE;
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TimeStamp currentTime;
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int defaultColorVisualClass = -1;
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int monitorResolution = 0;
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const char *display;
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int displayfd = -1;
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Bool explicit_display = FALSE;
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char *ConnectionInfo;
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CARD32 TimeOutValue = DEFAULT_TIMEOUT * MILLI_PER_SECOND;
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#if DEBUG_INPUT_MUTEX
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#define INPUT_MUTEX_INITIALIZER PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
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#else
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#define INPUT_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
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#endif
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pthread_mutex_t input_mutex = INPUT_MUTEX_INITIALIZER;
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__thread int input_mutex_count;
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