diff options
Diffstat (limited to 'connectivity/source/drivers/jdbc/jservices.cxx')
| -rw-r--r-- | connectivity/source/drivers/jdbc/jservices.cxx | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/connectivity/source/drivers/jdbc/jservices.cxx b/connectivity/source/drivers/jdbc/jservices.cxx index 59c73ff6cbc5..85df77190783 100644 --- a/connectivity/source/drivers/jdbc/jservices.cxx +++ b/connectivity/source/drivers/jdbc/jservices.cxx @@ -83,7 +83,21 @@ struct ProviderRequest void* getProvider() const { return xRet.get(); } }; -//--------------------------------------------------------------------------------------- +extern "C" SAL_DLLPUBLIC_EXPORT void SAL_CALL +component_getImplementationEnvironment( + char const ** ppEnvTypeName, uno_Environment **) +{ + // Recent Java 6 VMs make calls to JNI Attach/DetachCurrentThread (which + // this code does extensively) very expensive. A follow-up JVM fix reduced + // the overhead significantly again for all threads but the main thread. So + // a quick hack to improve performance of this component again is to confine + // it in the affine apartment (where all code will run on a single, + // dedicated thread that is guaranteed no to be the main thread). However, + // a better fix would still be to redesign the code so that it does not call + // Attach/DetachCurrentThread so frequently: + *ppEnvTypeName = CPPU_CURRENT_LANGUAGE_BINDING_NAME ":affine"; +} + extern "C" SAL_DLLPUBLIC_EXPORT void* SAL_CALL component_getFactory( const sal_Char* pImplementationName, void* pServiceManager, |