DragonFly BSD
DragonFly commits List (threaded) for 2005-06
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Re: cvs commit: src/sys/kern imgact_elf.c init_main.c kern_checkpoint.c kern_descrip.c kern_event.c sys_generic.c sys_pipe.c uipc_syscalls.c uipc_usrreq.c vfs_aio.c vfs_syscalls.c src/sys/sys filedesc.h src/sys/dev/misc/streams streams.c ...

From: Joerg Sonnenberger <joerg@xxxxxxxxxxxxxxxxx>
Date: Wed, 22 Jun 2005 13:59:57 +0200
Mail-followup-to: commits@crater.dragonflybsd.org

On Wed, Jun 22, 2005 at 01:13:01PM +0200, Simon 'corecode' Schubert wrote:
> Lately Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxxxxx> said:
> >   Log:
> >   File descriptor cleanup stage 2, remove the separate arrays for file
> >   pointers, fileflags, and allocation counts and replace the mess with a
> >   single structural array.  Also revamp the code that checks whether the
> >   file descriptor array is built-in or allocated.
> can anybody enlighten me why this was done in the first place?
> this way it's much clearer anyways

But it is also slower because the amount of data which has to be copied when
the array is extended is now doubled. (pointer vs. struct fdnode)


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