Re: JNI/CNI Revisited

[Tom Tromey]

>>>>> "Aaron" == Aaron M Renn <address@hidden> writes:

Aaron> Right now Classpath just hardcodes these as FD 0, 1, and 2.
Aaron> Probably not a good idea.  The nativeInit() method was one I
Aaron> envisioned being called as part of static initialization a la
Aaron> gcj, and thus it could set up these values.

For some reason I assumed your `nativeInit' method had to do with
initializing an instance -- but of course open() can be used for that.

Aaron> Interesting that it was done for performance reason.  I thought
Aaron> perhaps it was becuase we could not always guarantee that we
Aaron> could determine the current file position without tracking it.
Aaron> I think Classpath does something like lseek(fd, 0, SEEK_CUR)
Aaron> but this may not be portable.

Here's the thread:

    http://gcc.gnu.org/ml/java-patches/2003-q1/msg00013.html

We were doing 3 lseek()s per FileDescriptor.seek operation.

Tom