Re: Leopard Questions

Greg Guerin wrote:

c) There is currently no such distinction visible for ppc vs i386, so I

would expect none for 64 vs 32 bit.  That said, the "os.arch" system

property is readable by untrusted JNLP apps, and it often signals

architecture width.  The reason I expect this is because of how the 'arch'

command works, and how architectures are signified in the sysctl values and

elsewhere.  I think the ppc-64 value is "ppc64", but I don't know what the

x86-64 value is.

The JNLP Resource tag allows differentiation of resource downloads based on architecture as well as system (using the arch="ppc" and arch="i386 x86" attribute, along with os="Mac\ OS\ X"). We currently use this to only download the appropriate flat binary JNI lib for the current client, and avoid the overhead of downloading a Universal Binary (our end-users are very bandwidth conscious, so the megabyte or so that we save is very important). I hope we can continue to use this technique. This issue is of lesser import, as changing the JNLP files is a much smaller deal than changing our JNI libs.