That is the idea I had from when Solaris introduced asynchronous IO, but I never used them in anger.<p>I wasn&#x27;t aware that Aix also had them.<p>As a side note to that, when we used to develop for Aix, it used the same programming model for shared libraries as Windows does, not what is nowadays common across UNIXes.<p>So Aix also had import libraries and export symbols descriptions.