PtPreventExit()

Prevent a Photon application from exiting

Synopsis:

void PtPreventExit( void );

Library:

ph

Description:

PtPreventExit() lets Photon know that it isn't safe to exit your application.

In a multithreaded application, any thread can call PtExit(), but another thread might be in the middle of an important operation, such as writing a file. To prevent this situation from arising, call PtPreventExit() before starting the operation, and call PtAllowExit() when it's done.

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Instead of calling PtPreventExit() and PtAllowExit() directly, you're better off calling PtEnter() and PtLeave() with Pt_DELAY_EXIT set in the flags. For a discussion of the difference between these functions and using Pt_DELAY_EXIT, see “Exiting a multithreaded program” in the Parallel Operations chapter of the Photon Programmer's Guide.

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Classification:

Photon

See also:

PtAllowExit(), PtEnter(), PtExit(), PtLeave()

Parallel Operations chapter of the Photon Programmer's Guide