On Mon, Jan 22, 2007 at 09:59:56AM -0600, John Stanton wrote: > A neat way to implement a pager is to memory map a file to make it > shared virtual memory. Then you need some form of mutex to synchronize > access to it. If you are sharing it between processes or threads you > need a lock flag on each page. If you make your shared area a named > file rather than an anonymous space and write through it your cache can > be persistent. > > You may need a free list of deleted pages to avoid checkerboarding. > > The benefit of the virtual memory approach is that you are not > constrained by available memory and your application becomes more portable.
But you would be constrained by memory model (i.e., 32-bit is too small), unless you move mmap windows about the file, which would be a pain. Nico -- ----------------------------------------------------------------------------- To unsubscribe, send email to [EMAIL PROTECTED] -----------------------------------------------------------------------------
