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xserver-multidpi/include
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Keith Packard 30ac756798 Create a threaded mechanism for input [v7] 
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>
2016-05-26 16:07:54 -07:00
..
.gitignore .gitignore: use common defaults with custom section #24239 2009-11-11 21:40:20 -08:00
busfault.h Trap SIGBUS to handle truncated shared memory segments 2013-11-11 15:16:07 -08:00
callback.h Avoid starting a comment with */* 2014-07-17 10:19:52 -07:00
client.h Introduce a consistent coding style 2012-03-21 13:54:42 -07:00
closestr.h Replace 'pointer' type with 'void *' 2014-01-12 10:24:11 -08:00
closure.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
colormap.h dix: Unexport various implementation details 2015-07-08 16:40:57 -04:00
colormapst.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
cursor.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
cursorstr.h cursor: drop ARGB_CURSOR 2015-06-30 12:17:51 +10:00
dbus-core.h xfree86: drop double-typedef of DBusConnection 2014-11-12 10:25:00 +10:00
displaymode.h vidmode: move display mode definitions 2016-02-29 16:28:57 -05:00
dix-config-apple-verbatim.h Move the apple fat binary hacks back to a header file, and make it apple-only. 2009-01-30 16:36:45 -08:00
dix-config.h.in Create a threaded mechanism for input [v7] 2016-05-26 16:07:54 -07:00
dix.h dix: Add RootWindowFinalizeCallback 2016-04-18 11:22:58 -04:00
dixaccess.h Introduce a consistent coding style 2012-03-21 13:54:42 -07:00
dixevents.h dix: Remove redundant declarations. 2012-05-14 13:31:00 +01:00
dixfont.h dixfont.h: Include fontutil.h before GetGlyphs is #defined 2015-08-17 18:50:00 -07:00
dixfontstr.h Introduce a consistent coding style 2012-03-21 13:54:42 -07:00
dixfontstubs.h include: GetClientResolutions is declared in font.h 2014-01-22 19:56:31 -08:00
dixgrabs.h Avoid starting a comment with */* 2014-07-17 10:19:52 -07:00
dixstruct.h Remove non-smart scheduler. Don't require setitimer. 2015-12-01 13:54:54 -05:00
eventconvert.h input: drop FP1616 macro 2012-11-19 12:12:23 +10:00
events.h Add support for XI2.3: Pointer barrier events and releases. 2012-12-17 15:01:45 +10:00
eventstr.h Input: Add focus-in event source 2015-11-24 11:36:34 +10:00
exevents.h dix: Move DeviceFocusEvent from Xi into enterleave.c 2012-05-17 08:50:44 +10:00
extension.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
extinit.h Make PseudoramiXExtensionInit() prototype more generally available 2015-03-16 16:56:17 +00:00
extnsionst.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
gc.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
gcstruct.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
globals.h Clean up warnings in DIX 2014-01-12 10:14:49 -08:00
glx_extinit.h glx: drop GLX_LIBS from X server and workaround sdksyms. 2012-07-25 23:30:53 -07:00
hotplug.h config: Replace OdevAttributes linked list with struct 2014-07-17 17:10:48 -07:00
input.h Create a threaded mechanism for input [v7] 2016-05-26 16:07:54 -07:00
inputstr.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
inpututils.h Input: Add DeviceEventSource enum 2015-11-24 11:36:32 +10:00
kdrive-config.h.in kdrive: Delete unused TOUCHSCREEN define. 2015-10-06 10:43:05 -04:00
list.h Fix uninitialized variable warnings reported by clang 2016-01-06 09:42:59 -05:00
Makefile.am vidmode: move to a separate library of its own 2016-02-29 16:29:01 -05:00
misc.h Create a threaded mechanism for input [v7] 2016-05-26 16:07:54 -07:00
miscstruct.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
nonsdk_extinit.h Make PseudoramiXExtensionInit() prototype more generally available 2015-03-16 16:56:17 +00:00
opaque.h configurable maximum number of clients 2015-08-24 00:00:18 -07:00
optionstr.h Introduce a consistent coding style 2012-03-21 13:54:42 -07:00
os.h Create a threaded mechanism for input [v7] 2016-05-26 16:07:54 -07:00
pixmap.h prime: add rotation support for offloaded outputs (v2) 2015-07-08 11:13:09 -07:00
pixmapstr.h prime: add rotation support for offloaded outputs (v2) 2015-07-08 11:13:09 -07:00
privates.h Replace 'pointer' type with 'void *' 2014-01-12 10:24:11 -08:00
probes.h Get rid of const warnings in XSERVER_INPUT_EVENT dtrace probe calls 2015-02-10 18:14:44 -08:00
property.h dix: Remove redundant ChangeWindowProperty 2015-11-30 10:24:53 -05:00
propertyst.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
protocol-versions.h randr: Add Monitor support (v1.1) 2015-03-31 12:32:04 +10:00
ptrveloc.h dix: indentation fixes for pointer acceleration 2012-05-16 10:59:35 +10:00
region.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
regionstr.h dix: make RegionInit legal C++ 2015-01-23 10:35:49 -08:00
registry.h XSERVER_DTRACE needs request names from registry too 2014-09-22 12:00:46 -07:00
resource.h dix: export ResourceClientBits() 2015-09-01 20:11:26 -07:00
rgb.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
screenint.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
scrnintstr.h dix: Restore PaintWindow screen hook 2015-07-08 16:41:28 -04:00
selection.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
servermd.h dix: Fix image byte order on big endian hardware 2015-05-07 14:03:50 -04:00
site.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
swaprep.h dix: Unexport various implementation details 2015-07-08 16:40:57 -04:00
swapreq.h dix: Unexport various implementation details 2015-07-08 16:40:57 -04:00
systemd-logind.h systemd-logind: let the logind code decided whether to close an fd 2014-05-05 07:26:33 +10:00
validate.h Introduce a consistent coding style 2012-03-21 13:54:42 -07:00
version-config.h.in Move VENDOR_* defines from AC_SUBST to a header to avoid angering shave. 2009-04-14 10:35:44 -04:00
vidmodestr.h vidmode: build without xf86vidmodeproto 2016-03-01 11:25:59 -05:00
window.h dix: Add hybrid full-size/empty-clip mode to SetRootClip 2016-02-22 13:26:31 -05:00
windowstr.h dix: unifdef pWin->rootlessUnhittable 2015-07-08 16:41:28 -04:00
XIstubs.h Introduce a consistent coding style 2012-03-21 13:54:42 -07:00
xkb-config.h.in Move to autoconf standard function name checks & defines 2011-12-05 14:32:45 -08:00
xkbfile.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
xkbrules.h xkb: add a call to init an XkbRMLVOSet from const chars 2014-02-04 10:53:59 +10:00
xkbsrv.h xkb: after changing the keymap, force an indicator update 2016-05-04 10:55:09 -04:00
xkbstr.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
xorg-config.h.in Remove SIGIO support for input [v5] 2016-05-26 16:07:54 -07:00
xorg-server.h.in kdrive: Delete unused TOUCHSCREEN define. 2015-10-06 10:43:05 -04:00
Xprintf.h os/xprintf: add Xvscnprintf and Xscnprintf 2012-05-03 14:59:23 +10:00
xserver-properties.h Add missing labels for multitouch valuators 2012-10-30 15:11:10 +10:00
xsha1.h Drop trailing whitespaces 2014-11-12 10:25:00 +10:00
xwin-config.h.in configure: Restore DEFAULT_LOGDIR to xwin-config.h, it is used 2014-06-02 13:07:46 +01:00