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| author | rbyers@chromium.org <rbyers@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-06-10 19:01:02 +0000 |
|---|---|---|
| committer | rbyers@chromium.org <rbyers@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-06-10 19:01:02 +0000 |
| commit | a38c64e3c5b18bacb2af9abe24bc940ef15744f9 (patch) | |
| tree | 8c0d114a8f49eb62a5dfd0aa24811a32e8ae91ef /ui | |
| parent | 3085128ee0b77d67afc1c4f51c4fda569033d82c (diff) | |
| download | chromium_src-a38c64e3c5b18bacb2af9abe24bc940ef15744f9.zip chromium_src-a38c64e3c5b18bacb2af9abe24bc940ef15744f9.tar.gz chromium_src-a38c64e3c5b18bacb2af9abe24bc940ef15744f9.tar.bz2 | |
Improve tracing for input events - especially Aura touch
Put a number of key trace messages into an "input" category to make
it easy to see how they relate and flow through the system (I'll make
some similar changes on the blink side too).
Add an async trace tracking the TouchEventQueue so that it's easy
to see the latency caused by touch events waiting around in the
queue.
Add a trace near the point when X events first get into Aura, and
include as a parameter the additional latency from the driver timestamp.
BUG=None
R=ben@chromium.org, nduca@chromium.org, sadrul@chromium.org
Review URL: https://codereview.chromium.org/16190012
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@205258 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'ui')
| -rw-r--r-- | ui/aura/root_window_host_x11.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/ui/aura/root_window_host_x11.cc b/ui/aura/root_window_host_x11.cc index 5c5c6ba..7d2c850 100644 --- a/ui/aura/root_window_host_x11.cc +++ b/ui/aura/root_window_host_x11.cc @@ -18,6 +18,7 @@ #include <string> #include "base/command_line.h" +#include "base/debug/trace_event.h" #include "base/message_loop.h" #include "base/message_pump_aurax11.h" #include "base/stl_util.h" @@ -939,6 +940,11 @@ void RootWindowHostX11::DispatchXI2Event(const base::NativeEvent& event) { if (!factory->ShouldProcessXI2Event(xev)) return; + TRACE_EVENT1("input", "RootWindowHostX11::DispatchXI2Event", + "event_latency_us", + (ui::EventTimeForNow() - ui::EventTimeFromNative(event)). + InMicroseconds()); + ui::EventType type = ui::EventTypeFromNative(xev); XEvent last_event; int num_coalesced = 0; |