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2012-03-22dix: add dtrace probes to input APIPeter Hutterer1-0/+2
For driver debugging, it is helpful to know whether the driver has actually submitted an event to the server. dtrace hooks can help here. Note that GetPointerEvents and friends may also be triggered by the server for other emulated devices, some care must be taken when analysing the results. Additional difficulty: proximity events have a run-time assigned type, so this may make automatic detection a tad harder. If in doubt, go for any event > 64 since the only two that can have that value are ProximityIn and ProximityOut. An example systemtap script is below: # Compile+run with # stap -g xorg.stp /usr/bin/Xorg # function print_valuators:string(nvaluators:long, mask_in:long, valuators_in:long) %{ int i; unsigned char *mask = (unsigned char*)THIS->mask_in; double *valuators = (double*)THIS->valuators_in; char str[128] = {0}; char *s = str; #define BitIsSet(ptr, bit) (((unsigned char*)(ptr))[(bit)>>3] & (1 << ((bit) & 7))) s += sprintf(s, "nval: %d ::", (int)THIS->nvaluators); for (i = 0; i < THIS->nvaluators; i++) { s += sprintf(s, " %d: ", i); if (BitIsSet(mask, i)) s += sprintf(s, "%d", (int)valuators[i]); } sprintf(THIS->__retvalue, "%s", str); %} probe process(@1).mark("input__event") { deviceid = $arg1 type = $arg2 detail = $arg3 flags = $arg4 nvaluators = $arg5 str = print_valuators(nvaluators, $arg6, $arg7) printf("Event: device %d type %d detail %d flags %#x %s\n", deviceid, type, detail, flags, str); } Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Acked-by: Jeremy Huddleston <jeremyhu@apple.com>
2010-12-07Sun's copyrights now belong to OracleAlan Coopersmith1-1/+1
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
2009-12-16Update Sun license notices to current X.Org standard formAlan Coopersmith1-23/+17
Signed-off-by: Alan Coopersmith <alan.coopersmith@sun.com> Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
2009-09-27Add (ok, fix) support for DTrace under OS XBen Byer1-1/+6
(cherry picked from commit 8428a57184f542941d2c8c90e97d18e111a69dd2)
2006-11-03Add DTrace probe points for X server <-> client communicationsAlan Coopersmith1-0/+59
See http://people.freedesktop.org/~alanc/dtrace/ for more details