🚀 go-pugleaf

In article <DEVEN.90Apr13060332@netserv2.rpi.edu> deven@rpi.edu (Deven T. Corzine) writes:
>It also says that locks can also be used for asynchronous I/O, but
>does not describe HOW.  Can you Lock() a file and use packets to the
>filesystem handler to do asynchronous I/O to AmigaDOS files without
>even having to call Open()?  If so, how do you do this?

There's no way as of 1.3 to flip flop from a file handle to a file lock and
back from the perspective of the user of a handler.

The best way to do async file system IO is to first open the file using the
normal Open() call, then use the data contained in the FileHandle to
communicate with the file system directly. When you're done, you can then
use the normal Close() to terminate access to the file. I do this all
the time and it works great.

I first implemented this scheme in the M2Sprint compiler. While the compiler
is busy compiling a section of code, an asynchronous file system request
is busy loading the next section of code in memory. This really increases
performance quite a bit with DMA devices.


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Martin Taillefer   INTERNET: martin@pnt.CAM.ORG
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