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Keep an immutable copy for every scanned Device* to avoid rescans.

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This commit is contained in:
Teo Mrnjavac 2016-09-09 11:25:04 +02:00 committed by Philip
parent 44368db30a
commit 6d0965ef3f
3 changed files with 20 additions and 15 deletions
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26
src/modules/partition/core/PartitionCoreModule.cpp
View File

@ -97,6 +97,7 @@ isIso9660( const Device* device )
PartitionCoreModule::DeviceInfo::DeviceInfo( Device* _device )
: device( _device )
, partitionModel( new PartitionModel )
, immutableDevice( new Device( *_device ) )
{}
PartitionCoreModule::DeviceInfo::~DeviceInfo()
@ -235,7 +236,7 @@ PartitionCoreModule::bootLoaderModel() const
}
PartitionModel*
PartitionCoreModule::partitionModelForDevice( Device* device ) const
PartitionCoreModule::partitionModelForDevice( const Device* device ) const
{
DeviceInfo* info = infoForDevice( device );
Q_ASSERT( info );
@ -244,14 +245,14 @@ PartitionCoreModule::partitionModelForDevice( Device* device ) const
Device*
PartitionCoreModule::createImmutableDeviceCopy( Device* device )
PartitionCoreModule::immutableDeviceCopy( const Device* device )
{
CoreBackend* backend = CoreBackendManager::self()->backend();
Q_ASSERT( device );
DeviceInfo* info = infoForDevice( device );
if ( !info )
return nullptr;
QString node = device->deviceNode();
cDebug() << "Creating immutable copy for node:" << node;
Device* deviceBefore = backend->scanDevice( node );
return deviceBefore;
return info->immutableDevice.data();
}
@ -566,12 +567,15 @@ PartitionCoreModule::scanForEfiSystemPartitions()
}
PartitionCoreModule::DeviceInfo*
PartitionCoreModule::infoForDevice( Device* device ) const
PartitionCoreModule::infoForDevice( const Device* device ) const
{
for ( auto deviceInfo : m_deviceInfos )
for ( auto it = m_deviceInfos.constBegin();
it != m_deviceInfos.constEnd(); ++it )
{
if ( deviceInfo->device.data() == device )
return deviceInfo;
if ( ( *it )->device.data() == device )
return *it;
if ( ( *it )->immutableDevice.data() == device )
return *it;
}
return nullptr;
}

7
src/modules/partition/core/PartitionCoreModule.h
View File

@ -68,7 +68,7 @@ public:
DeviceModel* deviceModel() const;
PartitionModel* partitionModelForDevice( Device* device ) const;
PartitionModel* partitionModelForDevice( const Device* device ) const;
//HACK: all devices change over time, and together make up the state of the CoreModule.
// However this makes it hard to show the *original* state of a device.
@ -77,7 +77,7 @@ public:
// This should probably be redone some other way.
// -- Teo 4/2015
//FIXME: make this horrible method private. -- Teo 12/2015
static Device* createImmutableDeviceCopy( Device* device );
Device* immutableDeviceCopy( const Device* device );
QAbstractItemModel* bootLoaderModel() const;
@ -147,6 +147,7 @@ private:
~DeviceInfo();
QScopedPointer< Device > device;
QScopedPointer< PartitionModel > partitionModel;
const QScopedPointer< Device > immutableDevice;
QList< Calamares::job_ptr > jobs;
void forgetChanges();
@ -166,7 +167,7 @@ private:
void updateIsDirty();
void scanForEfiSystemPartitions();
DeviceInfo* infoForDevice( Device* ) const;
DeviceInfo* infoForDevice( const Device* ) const;
OsproberEntryList m_osproberLines;

2
src/modules/partition/gui/ChoicePage.cpp
View File

@ -817,7 +817,7 @@ ChoicePage::updateDeviceStatePreview()
m_beforePartitionLabelsView = new PartitionLabelsView( m_previewBeforeFrame );
m_beforePartitionLabelsView->setExtendedPartitionHidden( mode == PartitionBarsView::NoNestedPartitions );
Device* deviceBefore = m_core->createImmutableDeviceCopy( currentDevice );
Device* deviceBefore = m_core->immutableDeviceCopy( currentDevice );
PartitionModel* model = new PartitionModel( m_beforePartitionBarsView );
model->init( deviceBefore, m_core->osproberEntries() );