CreateMutex replacment using pthread_mutex ?

[Methedrine]

because as far as I see there is no way to make the mutex on system level, it is only for the pid of the application.

To quote the docs:

"Unlike QSemaphore, a QSystemSemaphore can also be accessed from multiple processes."

[afail]

To quote the docs:

"Unlike QSemaphore, a QSystemSemaphore can also be accessed from multiple processes."

ahm.. what I used to read was Qt 4.4.3.
Is there some kind of workaround for Qt < 4.5 ?

[Methedrine]

ahm.. what I used to read was Qt 4.4.3.
Is there some kind of workaround for Qt < 4.5 ?

To quote the docs again...

"This class was introduced in Qt 4.4."

[afail]

Sorry to reopen this issue but the semaphore behaves a little bit strange.

If I start 2 processes one after another, all is fine and the lock is done correctly. If I start 10 processes one after another (i.e. in GNU/Linux: # ./exefile & ./exefile & ./exefile & ./exefile) then either some of the instances crashes or starts as separate instance (which shouldn't).

Any ideas?

[wysota]

Separate instance of what? What is exactly that you are trying to do and how are you trying to do it?