Re: async file IO
John Rohlf (jrohlf++at++tubes)
Wed, 14 Sep 94 10:54:50 PDT
>
> Greetings, I'm having some problem with async file io.
> I cannot write anything to it. There *must* be something
> I did not do. Thanks for the advice in advance.
>
> below is the code
> desmond
>
> /*________________________________________________________________*/
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <fcntl.h>
> #include <Performer/pf.h>
> #include <pr.h>
>
> main()
> {
> pfFile *oFile;
> int Fstatus;
>
> oFile = pfOpenFile("test.open",O_WRONLY|O_CREAT|O_APPEND,0644);
>
> Fstatus = pfWriteFile(oFile,"first line\n",11);
> printf("status of file %d\n",Fstatus);
> /* returns 0 !!! */
>
> Fstatus = pfGetFileStatus(oFile,PFRTF_STATUS);
> printf("status of file %d\n",Fstatus);
> /* return 1 */
>
> Fstatus = pfCloseFile(oFile);
> printf("status of file %d\n",Fstatus);
> /* return 0 */
> }
>
There are indeed a few bugs in pfFile. However, pfFile was
intended as a temporary fix for async I/O which is now
supported by IRIX 5.2 I believe. Look at the aio_init() and
related man pages to see if this satisfies your requirement.
Otherwise we can get you pfFile fixes/workarounds.
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on Mon Aug 10 1998 - 17:50:32 PDT