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Ref T397, sort by timestamp, then adjust offset + function which ignores overlapping situations

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This commit is contained in:
Klaus Basan
2018-10-18 17:43:24 +02:00
parent c010149686
commit 0b74493eeb
2 changed files with 45 additions and 20 deletions
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62
src/blackmisc/timestampobjectlist.cpp
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@@ -274,15 +274,22 @@ namespace BlackMisc
{
c[0] = value;
if (maxElements > 0) { c.truncate(maxElements); }
return;
}
else
{
if (maxElements > 0) { c.truncate(maxElements - 1); }
const bool needSort = !c.isEmpty() && value.isOlderThan(c.front());
c.push_front(value);
if (needSort)
{
ITimestampObjectList::sortLatestFirst();
}
}
if (maxElements > 0) { c.truncate(maxElements - 1); }
const bool needSort = !c.isEmpty() && value.isOlderThan(c.front());
c.push_front(value);
if (needSort)
// crosscheck
if (CBuildConfig::isLocalDeveloperDebugBuild())
{
ITimestampObjectList::sortLatestFirst();
Q_ASSERT_X(this->isSortedLatestFirst(), Q_FUNC_INFO, "Wrong sort order");
}
}
@@ -404,7 +411,7 @@ namespace BlackMisc
c++;
}
if (c >0) { mmm.mean = mean / c; }
if (c > 0) { mmm.mean = mean / c; }
return mmm;
}
@@ -498,31 +505,47 @@ namespace BlackMisc
template<class OBJ, class CONTAINER>
void ITimestampWithOffsetObjectList<OBJ, CONTAINER>::push_frontKeepLatestFirstAdjustOffset(const OBJ &value, bool replaceSameTimestamp, int maxElements)
{
ITimestampWithOffsetObjectList<OBJ, CONTAINER>::push_frontKeepLatestAdjustedFirst(value, replaceSameTimestamp, maxElements);
ITimestampWithOffsetObjectList<OBJ, CONTAINER>::push_frontKeepLatestFirst(value, replaceSameTimestamp, maxElements);
// now sorted by timestamp
// this reflects normally the incoming order
// ts
// 8: os 2 adj 10
// 6: os 2 adj 8
// 5: os 5 adj 10 => max os 3
// 8: os 2 adj 12 => min os 4
// 6: os 2 adj 11 => min os 5
// 5: os 5 adj 10
// 0: os 5 adj 5
CONTAINER &c = this->container();
if (c.size() < 2) { return; }
const ITimestampWithOffsetBased &front = c.front();
ITimestampWithOffsetBased &second = c[1];
if (front.isNewerThanAdjusted(second)) { return; }
const qint64 diffOs = front.getAdjustedMSecsSinceEpoch() - second.getMSecsSinceEpoch() - 1;
const qint64 avgOs = (diffOs + qMin(front.getTimeOffsetMs(), diffOs)) / 2;
second.setTimeOffsetMs(avgOs);
ITimestampWithOffsetBased &front = c.front();
const ITimestampWithOffsetBased &second = c[1];
if (!front.isNewerThanAdjusted(second))
{
// const qint64 minOs = qMin(front.getTimeOffsetMs(), second.getTimeOffsetMs());
const qint64 minReqOs = second.getAdjustedMSecsSinceEpoch() - front.getMSecsSinceEpoch(); // minimal required
const qint64 avgOs = (front.getTimeOffsetMs() + second.getTimeOffsetMs()) / 2;
const qint64 os = qMax(minReqOs + 1, avgOs); // at least +1, as value must be > (greater)
front.setTimeOffsetMs(os);
}
if (CBuildConfig::isLocalDeveloperDebugBuild())
{
Q_ASSERT_X(front.isNewerThanAdjusted(second), Q_FUNC_INFO, "Front/second timestamp");
Q_ASSERT_X(this->isSortedAdjustedLatestFirst(), Q_FUNC_INFO, "Wrong sort order");
BLACK_VERIFY_X(front.isNewerThanAdjusted(second), Q_FUNC_INFO, "Front/second timestamp");
BLACK_VERIFY_X(this->isSortedAdjustedLatestFirst(), Q_FUNC_INFO, "Wrong sort order");
}
}
template<class OBJ, class CONTAINER>
void ITimestampWithOffsetObjectList<OBJ, CONTAINER>::push_frontKeepLatestFirstIgnoreOverlapping(const OBJ &value, bool replaceSameTimestamp, int maxElements)
{
CONTAINER &c = this->container();
if (c.size() > 1)
{
const ITimestampWithOffsetBased front = c.front();
if (value.getAdjustedMSecsSinceEpoch() <= front.getAdjustedMSecsSinceEpoch()) { return; }
}
ITimestampWithOffsetObjectList<OBJ, CONTAINER>::push_frontKeepLatestFirst(value, replaceSameTimestamp, maxElements);
}
template<class OBJ, class CONTAINER>
void ITimestampWithOffsetObjectList<OBJ, CONTAINER>::prefillLatestAdjustedFirst(const OBJ &value, int elements, qint64 deltaTimeMs)
{
@@ -561,7 +584,6 @@ namespace BlackMisc
template<class OBJ, class CONTAINER>
bool ITimestampWithOffsetObjectList<OBJ, CONTAINER>::isSortedAdjustedLatestFirst() const
{
if (this->container().isEmpty()) { return false; }
if (this->container().size() < 2) { return true; }
qint64 min = std::numeric_limits <qint64>::max();
for (const ITimestampWithOffsetBased &obj : this->container())

3
src/blackmisc/timestampobjectlist.h
View File

@@ -206,6 +206,9 @@ namespace BlackMisc
//! \remark adjust offset to average offset of two adjacent elements so adjusted values are sorted
void push_frontKeepLatestFirstAdjustOffset(const OBJ &value, bool replaceSameTimestamp = true, int maxElements = -1);
//! Add value, but ignore overlapping (past) values
void push_frontKeepLatestFirstIgnoreOverlapping(const OBJ &value, bool replaceSameTimestamp = true, int maxElements = -1);
//! Prefill with elements
void prefillLatestAdjustedFirst(const OBJ &value, int elements, qint64 deltaTimeMs = -1);