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Improved graceful shutdown, added "m_shutdownInProgress"

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* no assert when wait is called in same thread, just ignore wait
* quitAndWait readers, also works if not already noved in new thread (see above)
This commit is contained in:
Klaus Basan
2018-03-19 21:04:17 +01:00
parent 9dabef447f
commit d6fd53287f
8 changed files with 71 additions and 29 deletions
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17
src/blackcore/application.cpp
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@@ -105,7 +105,7 @@ namespace BlackCore
CApplication::CApplication(const QString &applicationName, CApplicationInfo::Application application, bool init) :
m_accessManager(new QNetworkAccessManager(this)),
m_applicationInfo(application),
m_cookieManager( {}, this), m_applicationName(applicationName), m_coreFacadeConfig(CCoreFacadeConfig::allEmpty())
m_cookieManager({}, this), m_applicationName(applicationName), m_coreFacadeConfig(CCoreFacadeConfig::allEmpty())
{
Q_ASSERT_X(!sApp, Q_FUNC_INFO, "already initialized");
Q_ASSERT_X(QCoreApplication::instance(), Q_FUNC_INFO, "no application object");
@@ -125,7 +125,13 @@ namespace BlackCore
{
if (!sApp)
{
// notify when app goes down
connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, this, &CApplication::gracefulShutdown);
// metadata
if (withMetadata) { CApplication::registerMetadata(); }
// unit test
if (this->getApplicationInfo().application() == CApplicationInfo::UnitTest)
{
const QString tempPath(this->getTemporaryDirectory());
@@ -174,9 +180,6 @@ namespace BlackCore
// startup done
connect(this, &CApplication::startUpCompleted, this, &CApplication::onStartUpCompleted, Qt::QueuedConnection);
connect(this, &CApplication::coreFacadeStarted, this, &CApplication::onCoreFacadeStarted, Qt::QueuedConnection);
// notify when app goes down
connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, this, &CApplication::gracefulShutdown);
}
}
@@ -751,7 +754,7 @@ namespace BlackCore
void CApplication::exit(int retcode)
{
if (instance()) { instance()->gracefulShutdown(); }
if (sApp) { instance()->gracefulShutdown(); }
// when the event loop is not running, this does nothing
QCoreApplication::exit(retcode);
@@ -956,8 +959,10 @@ namespace BlackCore
void CApplication::gracefulShutdown()
{
if (m_shutdown) { return; }
if (m_shutdownInProgress) { return; }
m_shutdownInProgress = true;
// before marked as shutdown
// before marked as shutdown, otherwise URL
if (m_networkWatchDog)
{
m_networkWatchDog->gracefulShutdown();

3
src/blackcore/application.h
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@@ -564,6 +564,8 @@ namespace BlackCore
bool m_started = false; //!< started with success?
bool m_singleApplication = true; //!< only one instance of that application
bool m_alreadyRunning = false; //!< Application already running
std::atomic_bool m_shutdown { false }; //!< is being shutdown?
std::atomic_bool m_shutdownInProgress { false }; //!< shutdown in progress?
private:
//! Problem with network access manager
@@ -611,7 +613,6 @@ namespace BlackCore
CCoreFacadeConfig m_coreFacadeConfig; //!< Core facade config if any
CWebReaderFlags::WebReader m_webReadersUsed; //!< Readers to be used
Db::CDatabaseReaderConfigList m_dbReaderConfig; //!< Load or used caching?
std::atomic<bool> m_shutdown { false }; //!< is being shutdown?
bool m_useContexts = false; //!< use contexts
bool m_useWebData = false; //!< use web data
bool m_signalStartup = true; //!< signal startup automatically

1
src/blackcore/db/networkwatchdog.cpp
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@@ -207,6 +207,7 @@ namespace BlackCore
void CNetworkWatchdog::gracefulShutdown()
{
this->pingDbClientService(PingCompleteShutdown);
this->quit();
}
void CNetworkWatchdog::pingDbClientService(CNetworkWatchdog::PingType type, bool force)

29
src/blackcore/webdataservices.cpp
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@@ -892,19 +892,20 @@ namespace BlackCore
void CWebDataServices::gracefulShutdown()
{
if (m_shuttingDown) { return; }
m_shuttingDown = true;
this->disconnect(); // all signals
if (m_vatsimMetarReader) { m_vatsimMetarReader->setEnabled(false); }
if (m_vatsimBookingReader) { m_vatsimBookingReader->setEnabled(false); }
if (m_vatsimDataFileReader) { m_vatsimDataFileReader->setEnabled(false); }
if (m_vatsimStatusReader) { m_vatsimStatusReader->setEnabled(false); }
if (m_modelDataReader) { m_modelDataReader->setEnabled(false); }
if (m_airportDataReader) { m_airportDataReader->setEnabled(false); }
if (m_icaoDataReader) { m_icaoDataReader->setEnabled(false); }
if (m_dbInfoDataReader) { m_dbInfoDataReader->setEnabled(false); }
if (m_vatsimMetarReader) { m_vatsimMetarReader->quitAndWait(); m_vatsimMetarReader = nullptr; }
if (m_vatsimBookingReader) { m_vatsimBookingReader->quitAndWait(); m_vatsimBookingReader = nullptr; }
if (m_vatsimDataFileReader) { m_vatsimDataFileReader->quitAndWait(); m_vatsimDataFileReader = nullptr; }
if (m_vatsimStatusReader) { m_vatsimStatusReader->quitAndWait(); m_vatsimStatusReader = nullptr; }
if (m_modelDataReader) { m_modelDataReader->quitAndWait(); m_modelDataReader = nullptr; }
if (m_airportDataReader) { m_airportDataReader->quitAndWait(); m_airportDataReader = nullptr; }
if (m_icaoDataReader) { m_icaoDataReader->quitAndWait(); m_icaoDataReader = nullptr; }
if (m_dbInfoDataReader) { m_dbInfoDataReader->quitAndWait(); m_dbInfoDataReader = nullptr; }
// DB writer is no threaded reader, it has a special role
if (m_databaseWriter) { m_databaseWriter->gracefulShutdown(); }
if (m_databaseWriter) { m_databaseWriter->gracefulShutdown(); m_databaseWriter = nullptr; }
}
CEntityFlags::Entity CWebDataServices::allDbEntitiesForUsedReaders() const
@@ -1287,6 +1288,7 @@ namespace BlackCore
void CWebDataServices::readDeferredInBackground(CEntityFlags::Entity entities, int delayMs)
{
if (m_shuttingDown) { return; }
if (entities == CEntityFlags::NoEntity) { return; }
QTimer::singleShot(delayMs, [ = ]()
{
@@ -1296,6 +1298,8 @@ namespace BlackCore
void CWebDataServices::readInBackground(CEntityFlags::Entity entities)
{
if (m_shuttingDown) { return; }
m_initialRead = true; // read started
if (CEntityFlags::anySwiftDbEntity(entities))
{
@@ -1324,6 +1328,8 @@ namespace BlackCore
bool CWebDataServices::waitForDbInfoObjectsThenRead(CEntityFlags::Entity entities)
{
if (m_shuttingDown) { return false; }
Q_ASSERT_X(m_dbInfoDataReader, Q_FUNC_INFO, "need reader");
if (m_dbInfoDataReader->areAllInfoObjectsRead()) { return true; }
if (!m_dbInfoObjectTimeout.isValid()) { m_dbInfoObjectTimeout = QDateTime::currentDateTimeUtc().addMSecs(10 * 1000); }
@@ -1333,6 +1339,8 @@ namespace BlackCore
bool CWebDataServices::waitForSharedInfoObjectsThenRead(CEntityFlags::Entity entities)
{
if (m_shuttingDown) { return false; }
Q_ASSERT_X(m_sharedInfoDataReader, Q_FUNC_INFO, "need reader");
if (m_sharedInfoDataReader->areAllInfoObjectsRead()) { return true; }
if (!m_sharedInfoObjectsTimeout.isValid()) { m_sharedInfoObjectsTimeout = QDateTime::currentDateTimeUtc().addMSecs(10 * 1000); }
@@ -1342,9 +1350,10 @@ namespace BlackCore
bool CWebDataServices::waitForInfoObjectsThenRead(CEntityFlags::Entity entities, const QString &info, CInfoDataReader *infoReader, QDateTime &timeOut)
{
Q_ASSERT_X(infoReader, Q_FUNC_INFO, "Need info data reader");
if (m_shuttingDown) { return false; }
// this will called for each entity readers, i.e. model reader, ICAO reader ...
Q_ASSERT_X(infoReader, Q_FUNC_INFO, "Need info data reader");
const int waitForInfoObjectsMs = 1000; // ms
if (infoReader->areAllInfoObjectsRead())

3
src/blackcore/webdataservices.h
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@@ -42,6 +42,7 @@
#include <QObject>
#include <QString>
#include <QStringList>
#include <atomic>
namespace BlackMisc
{
@@ -580,7 +581,7 @@ namespace BlackCore
BlackCore::Db::CDatabaseReaderConfigList m_dbReaderConfig; //!< how to read DB data
bool m_initialRead = false; //!< initial read started
bool m_signalledHeaders = false; //!< headers loading has been signalled
bool m_shuttingDown = false; //!< shutting down?
std::atomic_bool m_shuttingDown { false }; //!< shutting down?
QDateTime m_dbInfoObjectTimeout; //!< started reading DB info objects
QDateTime m_sharedInfoObjectsTimeout; //!< started reading shared info objects
QSet<BlackMisc::Network::CEntityFlags::Entity> m_signalledEntities; //!< remember signalled entites