Re: Alexandre Julliard : Take advantage of the __EXCEPT_PAGE_FAULT macro.

[Robert Shearman]

Alexandre Julliard wrote:
> Module: wine
> Branch: refs/heads/master
> Commit: ae964ac801b3077f5361559abd6645d21fc35d1f
> URL:    http://source.winehq.org/git/?p=wine.git;a=commit;h=ae964ac801b3077f5361559a...
>
> Author: Alexandre Julliard <julliard(a)winehq.org>
> Date:   Fri Dec 16 17:17:57 2005 +0100
>
> Take advantage of the __EXCEPT_PAGE_FAULT macro.

This change is wrong:
> --- dlls/ole32/rpc.c
> +++ dlls/ole32/rpc.c
> @@ -110,13 +110,6 @@ struct dispatch_params
> HRESULT hr; /* hresult (out) */
> };
> -static WINE_EXCEPTION_FILTER(ole_filter)
> -{
> - if (GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION)
> - return EXCEPTION_CONTINUE_SEARCH;
> - return EXCEPTION_EXECUTE_HANDLER;
> -}
> -
> static HRESULT WINAPI 
> RpcChannelBuffer_QueryInterface(LPRPCCHANNELBUFFER iface, REFIID riid, 
> LPVOID *ppv)
> {
> *ppv = NULL;
> @@ -453,7 +446,7 @@ void RPC_ExecuteCall(struct dispatch_par
> {
> params->hr = IRpcStubBuffer_Invoke(params->stub, params->msg, 
> params->chan);
> }
> - __EXCEPT(ole_filter)
> + __EXCEPT_PAGE_FAULT
> {
> params->hr = GetExceptionCode();
> }

The idea is that the ole_filter will catch all exceptions other than 
page faults so that we don't hide obvious programmer errors. However, 
there obviously should be cases for some other exceptions that we don't 
want to handle.

-- 
Rob Shearman

Alexandre Julliard : Take advantage of the __EXCEPT_PAGE_FAULT macro.

[Alexandre Julliard]

Robert Shearman <rob(a)codeweavers.com> writes:
> The idea is that the ole_filter will catch all exceptions other than 
> page faults so that we don't hide obvious programmer errors. However, 
> there obviously should be cases for some other exceptions that we don't 
> want to handle.

That doesn't sound right, we should have cases for exceptions that we
want to handle, not catching all of them. What sort of exceptions do
you expect to get here?

-- 
Alexandre Julliard
julliard(a)winehq.org

Alexandre Julliard : Take advantage of the __EXCEPT_PAGE_FAULT macro.

[Robert Shearman]

Alexandre Julliard wrote:
> Robert Shearman <rob(a)codeweavers.com> writes:
> > The idea is that the ole_filter will catch all exceptions other than 
> > page faults so that we don't hide obvious programmer errors. However, 
> > there obviously should be cases for some other exceptions that we don't 
> > want to handle.
>
> That doesn't sound right, we should have cases for exceptions that we
> want to handle, not catching all of them. What sort of exceptions do
> you expect to get here?

E_NOINTERFACE, RPC_E_DISCONNECTED, RPC_X_NULL_REF_POINTER, etc. I 
believe native also catches all but a few exceptions here, but I'll test 
this hypothesis. In the mean time, can you revert the patch? I think 
that it will have broken anything that uses MIDL generated proxies.

-- 
Rob Shearman