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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/memoryusagemodel.cpp
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@@ -177,12 +177,12 @@ void MemoryUsageModel::loadData()
type.detailType == selectionId(currentUsageIndex) &&
m_data[currentUsageIndex].originTypeIndex == rangeStack.top().originTypeIndex &&
rangeStack.top().startTime < startTime(currentUsageIndex)) {
m_data[currentUsageIndex].update(event.numericData(0));
m_data[currentUsageIndex].update(event.number<qint64>(0));
currentUsage = m_data[currentUsageIndex].size;
} else {
MemoryAllocationItem allocation(event.typeIndex(), currentUsage,
rangeStack.empty() ? -1 : rangeStack.top().originTypeIndex);
allocation.update(event.numericData(0));
allocation.update(event.number<qint64>(0));
currentUsage = allocation.size;
if (currentUsageIndex != -1) {
@@ -200,12 +200,12 @@ void MemoryUsageModel::loadData()
m_data[currentJSHeapIndex].originTypeIndex ==
rangeStack.top().originTypeIndex &&
rangeStack.top().startTime < startTime(currentJSHeapIndex)) {
m_data[currentJSHeapIndex].update(event.numericData(0));
m_data[currentJSHeapIndex].update(event.number<qint64>(0));
currentSize = m_data[currentJSHeapIndex].size;
} else {
MemoryAllocationItem allocation(event.typeIndex(), currentSize,
rangeStack.empty() ? -1 : rangeStack.top().originTypeIndex);
allocation.update(event.numericData(0));
allocation.update(event.number<qint64>(0));
currentSize = allocation.size;
if (currentSize > m_maxSize)