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QDBusSlotCache: Include flags into the hash key

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This removes the need for doing two separate iteration to find
entries in the hash. Also QMultyHash can now be replaced by
plain QHash.

Change-Id: Ie704e74c1dbb0c8e40d22a7cd572fcc8a3bfcd5d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Ievgenii Meshcheriakov 2023-08-29 15:25:49 +02:00
parent 9aaeb1bb3d
commit 588700dbfa
2 changed files with 24 additions and 12 deletions
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14
src/dbus/qdbusintegrator.cpp
View File

@ -857,19 +857,15 @@ bool QDBusConnectionPrivate::activateCall(QObject* object, int flags, const QDBu
cacheKey += signature;
}
QDBusSlotCache::Hash::ConstIterator cacheIt = slotCache.hash.constFind(cacheKey);
while (cacheIt != slotCache.hash.constEnd() && cacheIt->flags != flags &&
cacheIt.key() == cacheKey)
++cacheIt;
if (cacheIt == slotCache.hash.constEnd() || cacheIt.key() != cacheKey)
{
QDBusSlotCache::Key compoundKey{ std::move(cacheKey), flags };
QDBusSlotCache::Hash::ConstIterator cacheIt = slotCache.hash.constFind(compoundKey);
if (cacheIt == slotCache.hash.constEnd()) {
// not cached, analyze the meta object
const QMetaObject *mo = object->metaObject();
QByteArray memberName = msg.member().toUtf8();
// find a slot that matches according to the rules above
QDBusSlotCache::Data slotData;
slotData.flags = flags;
slotData.slotIdx = ::findSlot(mo, memberName, flags, msg.signature(), slotData.metaTypes);
if (slotData.slotIdx == -1) {
// ### this is where we want to add the connection as an arg too
@ -881,7 +877,7 @@ bool QDBusConnectionPrivate::activateCall(QObject* object, int flags, const QDBu
// save the negative lookup
slotData.slotIdx = -1;
slotData.metaTypes.clear();
slotCache.hash.insert(cacheKey, slotData);
slotCache.hash.insert(compoundKey, slotData);
object->setProperty(cachePropertyName, QVariant::fromValue(slotCache));
qCWarning(dbusIntegration).nospace() << "Could not find slot " << mo->className()
@ -891,7 +887,7 @@ bool QDBusConnectionPrivate::activateCall(QObject* object, int flags, const QDBu
}
// save to the cache
slotCache.hash.insert(cacheKey, slotData);
slotCache.hash.insert(compoundKey, slotData);
object->setProperty(cachePropertyName, QVariant::fromValue(slotCache));
// found the slot to be called

22
src/dbus/qdbusintegrator_p.h
View File

@ -46,18 +46,34 @@ struct QDBusSlotCache
{
struct Data
{
int flags;
int slotIdx;
QList<QMetaType> metaTypes;
void swap(Data &other) noexcept
{
qSwap(flags, other.flags);
qSwap(slotIdx, other.slotIdx);
qSwap(metaTypes, other.metaTypes);
}
};
typedef QMultiHash<QString, Data> Hash;
struct Key
{
QString memberWithSignature;
int flags;
friend bool operator==(const Key &lhs, const Key &rhs) noexcept
{
return lhs.memberWithSignature == rhs.memberWithSignature && lhs.flags == rhs.flags;
}
friend size_t qHash(const QDBusSlotCache::Key &key, size_t seed = 0) noexcept
{
return qHashMulti(seed, key.memberWithSignature, key.flags);
}
};
using Hash = QHash<Key, Data>;
Hash hash;
void swap(QDBusSlotCache &other) noexcept { qSwap(hash, other.hash); }