search for: v_result

...rtual ~item_iterator(); > virtual bool next( item *result ) = 0; > }; > > I'm aware that LLVM doesn't know anything about C++ and that one way to call C++ functions is to wrap them in C thunks: > > extern "C" bool thunk_iterator_M_next( void *v_that, void *v_result ) { > item_iterator *const that = static_cast<item_iterator*>( v_that ); > item *const result = static_cast<item*>( v_result ); > return that->next( result ); > } > > extern "C" void thunk_iterator_M_delete( void *v_that ) { > item_iterat...

My project has a C++ library that I want to allow the user to use via some programming language to be JIT'd to call functions in said library. For the sake of simplicity, assume the library has classes like: class item { public: item(); item( int ); ~item(); // ... }; class item_iterator { public: virtual ~item_iterator(); virtual bool next( item *result ) = 0; };

...>> virtual bool next( item *result ) = 0; >> }; >> >> I'm aware that LLVM doesn't know anything about C++ and that one way to call C++ functions is to wrap them in C thunks: >> >> extern "C" bool thunk_iterator_M_next( void *v_that, void *v_result ) { >> item_iterator *const that = static_cast<item_iterator*>( v_that ); >> item *const result = static_cast<item*>( v_result ); >> return that->next( result ); >> } >> >> extern "C" void thunk_iterator_M_delete( void *v_that...

...ing. How is having the code that catches all exceptions in a separate function different from what I proposed (putting the try/catch in the thunks)? (Ideally, I want to minimize layers of function calls.) Again for reference: extern "C" bool thunk_iterator_M_next( void *v_that, void *v_result, dtor_pairs *dtors ) { try { item_iterator *const that = static_cast<item_iterator*>( v_that ); item *const result = static_cast<item*>( v_result ); return that->next( result ); } catch ( ... ) { run_dtors( dtors );...

...n calls.) Again for reference: > No reason. But if you have the 'try{}catch(...){}', then it should run the d'tors for you. There's no reason for you to have a "run_dtors" function there. -bw > extern "C" bool thunk_iterator_M_next( void *v_that, void *v_result, > dtor_pairs *dtors ) { > try { > item_iterator *const that = static_cast<item_iterator*>( v_that ); > item *const result = static_cast<item*>( v_result ); > return that->next( result ); > } > catch...