Symisc UnQLite

An Embeddable NoSQL Database Engine

UnQLite C/C++ API Reference - Foreign function private data.


void * unqlite_context_user_data(unqlite_context *pCtx);

Extract foreign function private data.


The unqlite_context_user_data() interface returns a copy of the pointer that was the pUserData parameter (the last parameter) of the unqlite_create_function() that originally registered the application defined function.

This routine accepts as its first argument a pointer to a unqlite_context which mean that it is designed to be invoked only from a foreign function.

This routine must be called from the same thread in which the application-defined function is running.



Foreign function Call Context.

Return value

A copy of the pointer untouched or NULL if no private data were associated within this foreign function.

See also

Installing Foreign Functions.

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