Re: Lua VM Exception Handling

[Matt Campbell <mattc@...>]

Hello Andrew:

The correct solution is to wrap the library-allocated data in a 
userdatum whose __gc metamethod frees the data.  This way, the data is 
under the control of the Lua garbage collector.  Then you no longer have 
to explicitly free it at the end of your C function; just make sure the 
userdatum stays on the Lua stack.  And you'll know that the data will 
always eventually be freed when it's no longer needed, even if a Lua 
error occurred.  For more information, see the chapter on managing 
resources in the book _Programming in Lua_, the first edition of which 
is available at no charge online.

--
Matt Campbell
Lead Programmer
Serotek Corporation
www.freedombox.info
"The Accessibility Anywhere People"