On Wed, 22 May 2002, Peter J. Hunter wrote:

> The sleep code won't care as it just treats the ident as a key to a hash
> table, casting it as a u_long.  However, you'll lose the unique
> qualities of the key by using user space addresses (which can be shared
> between apps).  Therefore, you run the risk of being errantly woken up
> and errantly waking up others.

Also, some ports use a seperate kernel address space, so you might in
principle end up waking up other waiters waiting on a kernel address. :-)

Take care,

Bill