refined DataSourceUtils to catch Throwable on "Connection.close()" * DataSourceUtils uses lower synchronization order for delegating handles (such as from TransactionAwareDataSourceProxy) * SingleConnectionDataSource's value) * reworked Hibernate JTA transaction synchronization to expose "beforeCompletion" exceptions to the caller * Hibernate JTA transaction synchronization does not call "setRollbackOnly" on WebLogic WebLogic, to preserve the root cause * reworked Hibernate session synchronization to properly work with WebSphereExtendedJTATransactionLookup on WAS 6.0/6.1 * removed special Session reconnection check for

org/z/vqnfvh9WxCppCon 2023 8 David Olsen - Back to Basics: Concurrency STD::COUNTING_SEMAPHORE Lightweight synchronization primitive that can control access to a shared resource Maintains an internal counter Calls Parent thread write Child thread readCppCon 2023 65 David Olsen - Back to Basics: Concurrency SYNCHRONIZATION: THREAD CREATION Creating a thread synchronizes the parent and child threads All memory changes thread write Parent thread readCppCon 2023 69 David Olsen - Back to Basics: Concurrency SYNCHRONIZATION: THREAD JOIN Joining a thread synchronizes the parent and child threads All memory changes

"setTargetClass" method, else determines target class on demand * refined ThreadLocalTargetSource's synchronization to guarantee thread-safe destruction on shutdown * deprecated AbstractLazyInitTargetSource in interface now, assuming that the contained disconnected data is serializable * refined JTA synchronization in DataSourceUtils to release JDBC Connection on suspend (for JBoss JTA compatibility) * relaxed LocalSessionFactoryBean, through SessionBrokerSessionFactory * added "isOpen" assertions to Hibernate Session synchronization, seamlessly removing dangling Sessions (fail-safe) * refined HibernateTransactionManager and

dathskovsky@speedata.io | www.linkedin.com/in/alexdathskovsky Volatile ● Volatile is not a synchronization tool ● Volatile doesn’t affect threading ● It's not an atomic value ● It doesn’t add barriersAlex about itAlex Dathskovsky | alex.dathskovsky@speedata.io | www.linkedin.com/in/alexdathskovsky Synchronization contAlex Dathskovsky | alex.dathskovsky@speedata.io | www.linkedin.com/in/alexdathskovsky Compiler ExampleAlex Dathskovsky | alex.dathskovsky@speedata.io | www.linkedin.com/in/alexdathskovsky Synchronization Tools ● std::mutex, std::conditional_variable ● std::lock_guard – RAII helper for lockingAlex

interface now, assuming that the contained disconnected data is serializable * refined JTA synchronization in DataSourceUtils to release JDBC Connection on suspend (for JBoss JTA compatibility) * relaxed LocalSessionFactoryBean, through SessionBrokerSessionFactory * added "isOpen" assertions to Hibernate Session synchronization, seamlessly removing dangling Sessions (fail-safe) * refined HibernateTransactionManager and Package org.springframework.transaction * optimized TransactionSynchronizationManager to perform synchronization sort lazily (in "getSynchronizations") * added "defaultTimeout" bean property to JotmFactoryBean

"setTargetClass" method, else determines target class on demand * refined ThreadLocalTargetSource's synchronization to guarantee thread-safe destruction on shutdown * deprecated AbstractLazyInitTargetSource in interface now, assuming that the contained disconnected data is serializable * refined JTA synchronization in DataSourceUtils to release JDBC Connection on suspend (for JBoss JTA compatibility) * relaxed LocalSessionFactoryBean, through SessionBrokerSessionFactory * added "isOpen" assertions to Hibernate Session synchronization, seamlessly removing dangling Sessions (fail-safe) * refined HibernateTransactionManager and

springframework.jca * added CCI section to the reference documentation * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * reworked CciDaoSupport error code in message, to indicate potential exception classification * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * JdbcTemplate releases JTA/Spring transactions * fixed SessionFactoryUtils for Hibernate 2.1 to not prevent transaction synchronization when allowCreate=false * fixed LocalSessionFactoryBean for Hibernate3 to use connection release

springframework.jca * added CCI section to the reference documentation * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * reworked CciDaoSupport error code in message, to indicate potential exception classification * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * JdbcTemplate releases JTA/Spring transactions * fixed SessionFactoryUtils for Hibernate 2.1 to not prevent transaction synchronization when allowCreate=false * fixed LocalSessionFactoryBean for Hibernate3 to use connection release

springframework.jca * added CCI section to the reference documentation * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * reworked CciDaoSupport error code in message, to indicate potential exception classification * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * JdbcTemplate releases JTA/Spring transactions * fixed SessionFactoryUtils for Hibernate 2.1 to not prevent transaction synchronization when allowCreate=false * fixed LocalSessionFactoryBean for Hibernate3 to use connection release

springframework.jca * added CCI section to the reference documentation * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * reworked CciDaoSupport error code in message, to indicate potential exception classification * reworked transaction synchronization to correctly handle suspension even from beforeCompletion/afterCompletion * JdbcTemplate releases JTA/Spring transactions * fixed SessionFactoryUtils for Hibernate 2.1 to not prevent transaction synchronization when allowCreate=false * fixed LocalSessionFactoryBean for Hibernate3 to use connection release