On Wed, 28 Feb 2007, Chris Friesen wrote: > Davide Libenzi wrote: > > > struct async_syscall { > > unsigned long nr_sysc; > > unsigned long params[8]; > > long *result; > > }; > > > > And what would async_wait() return bak? Pointers to "struct async_syscall" > > or pointers to "result"? > > Either one has downsides. Pointer to struct async_syscall requires that the > caller keep the struct around. Pointer to result requires that the caller > always reserve a location for the result. > > Does the kernel care about the (possibly rare) case of callers that don't want > to pay attention to result? If so, what about adding some kind of > caller-specified handle to struct async_syscall, and having async_wait() > return the handle? In the case where the caller does care about the result, > the handle could just be the address of result.
Something like this (with async_wait() returning asynid's)? struct async_syscall { long *result; unsigned long asynid; unsigned long nr_sysc; unsigned long params[8]; }; - Davide - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/