[Interest] QSqlDatabase and Multithreading
Philipp Kursawe
phil.kursawe at gmail.com
Wed Jan 22 16:52:22 CET 2014
The Win32 implementation uses a mutex, which is used for inter-process
sync. Inside a process its a waste. Better use CriticalSection, its a
kernel object and several times faster then a mutex on Win32.
On Wed, Jan 22, 2014 at 4:45 PM, Thiago Macieira
<thiago.macieira at intel.com>wrote:
> On quarta-feira, 22 de janeiro de 2014 16:39:24, Philipp Kursawe wrote:
> > Your database class uses a std::recursive_mutex (not the Qt mutex, its a
> > resource waster!)
>
> Do you have any numbers? QMutex is very small and optimised (on Linux).
>
> QWaitCondition suffers because QMutex is so small.
> --
> Thiago Macieira - thiago.macieira (AT) intel.com
> Software Architect - Intel Open Source Technology Center
>
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