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Ulf Hermann authored
Some features, like the memory profiler, create huge amounts of data. Often enough, we're not actually interested in all the data available from the profiler and collecting it all can lead to excessive memory consumption. This change enables us to optionally turn various aspects of QML profiling off. Task-number: QTBUG-41118 Change-Id: I7bb223414e24eb903124ffa6e0896af6ce974e49 Reviewed-by:
Gunnar Sletta <gunnar@sletta.org>
1de6e7b8
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#include "qv4profiling_p.h"
#include "qv4mm_p.h"
QT_BEGIN_NAMESPACE
using namespace QV4;
using namespace QV4::Profiling;
FunctionCallProperties FunctionCall::resolve() const
{
FunctionCallProperties props = {
m_start,
m_end,
m_function->name()->toQString(),
m_function->compilationUnit->fileName(),
m_function->compiledFunction->location.line,
m_function->compiledFunction->location.column
};
return props;
}
Profiler::Profiler(QV4::ExecutionEngine *engine) : featuresEnabled(0), m_engine(engine)
{
static int metatype = qRegisterMetaType<QList<QV4::Profiling::FunctionCallProperties> >();
static int metatype2 = qRegisterMetaType<QList<QV4::Profiling::MemoryAllocationProperties> >();
Q_UNUSED(metatype);
Q_UNUSED(metatype2);
m_timer.start();
}
struct FunctionCallComparator {
bool operator()(const FunctionCallProperties &p1, const FunctionCallProperties &p2)
{ return p1.start < p2.start; }
};
void Profiler::stopProfiling()
7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115
{
featuresEnabled = 0;
reportData();
}
void Profiler::reportData()
{
QList<FunctionCallProperties> resolved;
resolved.reserve(m_data.size());
FunctionCallComparator comp;
foreach (const FunctionCall &call, m_data) {
FunctionCallProperties props = call.resolve();
resolved.insert(std::upper_bound(resolved.begin(), resolved.end(), props, comp), props);
}
emit dataReady(resolved, m_memory_data);
}
void Profiler::startProfiling(quint64 features)
{
if (featuresEnabled == 0) {
m_data.clear();
m_memory_data.clear();
if (features & (1 << FeatureMemoryAllocation)) {
qint64 timestamp = m_timer.nsecsElapsed();
MemoryAllocationProperties heap = {timestamp,
(qint64)m_engine->memoryManager->getAllocatedMem(),
HeapPage};
m_memory_data.append(heap);
MemoryAllocationProperties small = {timestamp,
(qint64)m_engine->memoryManager->getUsedMem(),
SmallItem};
m_memory_data.append(small);
MemoryAllocationProperties large = {timestamp,
(qint64)m_engine->memoryManager->getLargeItemsMem(),
LargeItem};
m_memory_data.append(large);
}
featuresEnabled = features;
}
}
QT_END_NAMESPACE