On Thu, Apr 25, 2013 at 7:38 AM, arun.pradeep <[email protected]> wrote:
>
> Hi Geoff
>
> I am currently working on porting of SQLITE to MQX RTOS in MPC5125
> Platform.
>
> I am trying to rewrite the sqlite_os_init() for MQX and I have taken Win32
> VFS implementation as the reference.
>
Have you considered using the (much simpler) test_demovfs.c VFS as a
reference implementation?
>
> But I am not able to map all of the Win32 file system calls with that of
> MQX
> functions.
>
> Please advise me on the list of file system functions that can be
> implemented as part of VFS for MQX.
>
>
>
> Regards,
> Arun
>
>
> GeoffW wrote:
> >
> > hello
> >
> > I thought I had better update this and confess to my sins. Good job no
> one
> > is reading this thread as it is an embarassingly stupid mistake :rules:
> >
> > I cant believe I did this and then took so long to spot it.
> >
> > int sqlite3_os_init(void)
> > {
> > static sqlite3_vfs mqxVfs = {
> > 1, /* iVersion */
> > 0, /* szOsFile ------------->ARRRGGGGGGGH <------------*/
> > MAX_PATH, /* mxPathname */
> > etc ....
> >
> > I started creating the ported file from osWin.c, I had quite a struggle
> > getting it to compile initially using CodeWarrior, so I was making
> several
> > temporary hacks to allow it to compile, which I then revisited later to
> > correct. I had replaced the sizeof(winFile) with a zero, and then forgot
> > to change it to sizeof(mqxFile).
> > This caused a fun crash down in the bowels of the paging code.
> >
> > Once I corrected this one liner it fixed the crash and sqlite is
> basically
> > up and running now. I still have a fair bit of work left to implement
> some
> > interface functions which are just dummy stubs at present, but I am
> making
> > progress now.
> >
> > Regards Geoff
> >
> >
> >
> >
> >
>
> --
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> http://old.nabble.com/Porting-Sqlite-to-MQX-Operating-system-tp27792715p35333159.html
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--
D. Richard Hipp
[email protected]
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