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Minor updates to the documentation

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Minor bug fixes to chicken


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@7595 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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John Lenz 2005-10-06 01:20:05 +00:00
commit d635d48eb5
4 changed files with 19 additions and 7 deletions
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10
Doc/Devel/runtime.txt
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@ -140,6 +140,16 @@ a pointer to the swig_type_info structure, then the TypeCheckStruct function
should be called. The TypeCheckStruct is slightly faster, since it does a
pointer comparison instead of a strcmp.
The flag argument to ConvertPtr is used in some languages for disowning a
pointer. If the wrapped C function is taking ownership of the pointer (that
means, the wrapped C function is responsible for deleting the object), then that
pointer should be removed from the garbage collector. We do that in the
ConvertPtr function. The pointer is still valid in the target language, but
when the target language type is garbage collected, it will not call the
associated destructor. Languages have a special typemap called DISOWN that can be
applied which passes this argument. All the languages have the flags argument
for consistancy, and the flags argument can be ignored or used for some other
purpose.
void *SWIG_MustGetPtr(LangType obj, swig_type_info *type, int flags,