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QmlProfiler: Add a QmlTypedEvent and extend QmlEvent

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The QmlTypedEvent is mainly useful to read a generic QmlEvent and
QmlEventType from a QPacket. QmlEventType has a stream operator to do
exactly that. QmlEvent also gets further options to store 32-bit data
in addition to 64- and 8-bit data. Also, with the more generic storage
layout we can reduce the memory consumption of range events by 50%.
This comes at the cost of additional memory allocations for non-range
events, but as non-range events are significantly less frequent than
range events, this is a good tradeoff. Finally the new storage layout
lends itself to efficient serialization, which will help when
developing new storage and transfer formats for QML traces.

Change-Id: I420de68b0142f23c8fb2ca8b329d7ffe69c83fe0
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
This commit is contained in:
Ulf Hermann
2016-04-28 15:57:12 +02:00
parent 61d94c5ccd
commit 8d15633a22
13 changed files with 541 additions and 160 deletions
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8
src/plugins/qmlprofiler/qmlprofileranimationsmodel.cpp
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@@ -78,10 +78,10 @@ void QmlProfilerAnimationsModel::loadData()
if (!accepted(type))
continue;
lastThread = (AnimationThread)event.numericData(2);
lastThread = (AnimationThread)event.number<qint32>(2);
// initial estimation of the event duration: 1/framerate
qint64 estimatedDuration = event.numericData(0) > 0 ? 1e9/event.numericData(0) : 1;
qint64 estimatedDuration = event.number<qint32>(0) > 0 ? 1e9 / event.number<qint32>(0) : 1;
// the profiler registers the animation events at the end of them
qint64 realEndTime = event.timestamp();
@@ -97,8 +97,8 @@ void QmlProfilerAnimationsModel::loadData()
// Don't "fix" the framerate even if we've fixed the duration.
// The server should know better after all and if it doesn't we want to see that.
lastEvent.typeId = event.typeIndex();
lastEvent.framerate = (int)event.numericData(0);
lastEvent.animationcount = (int)event.numericData(1);
lastEvent.framerate = event.number<qint32>(0);
lastEvent.animationcount = event.number<qint32>(1);
QTC_ASSERT(lastEvent.animationcount > 0, continue);
m_data.insert(insert(realStartTime, realEndTime - realStartTime, lastThread), lastEvent);