The following is an example of a program that performs user processing while reading three files.

 [Example]
/ * Number of sectors read from each file * /
#define NSCT1  1
#define NSCT2  2
#define NSCT3  3
/ * Size of data storage area of ​​each file (unit: bytes) * /
#define BSIZE1 2048*NSCT1
#define BSIZE2 2048*NSCT2
#define BSIZE3 2048*NSCT3

Sint32 fid1, fid2, fid3; / * File identifier of each file * /
GfsHn gfs1, gfs2, gfs3; / * File handle of each file * /
Uint32 buf1 [BSIZE1 / 4]; / ​​* Data storage area for each file * /
Uint32 buf2[BSIZE2/4];
Uint32 buf3[BSIZE3/4];
GfsHn now_gfs; / * File handle being accessed * /
Sint32 stat; / * Server status * / 

gfs1 = GFS_Open (fid1); / * File open * /
gfs2 = GFS_Open(fid2);
gfs3 = GFS_Open(fid3);
GFS_NwFread (gfs1, NSCT1, buf1, BSIZE1); / * Start of read operation * /
GFS_NwFread(gfs2, NSCT2, buf2, BSIZE2);
GFS_NwFread(gfs3, NSCT3, buf3, BSIZE3);
for (;;) {
    stat = GFS_NwExecServer (& now_gfs); / * Execution of reading * /
    if (stat == GFS_SVR_COMPLETED) {/ * Is there any work to do? * /
              break;
    }
    user (); / * Arbitrary user processing * /
}
GFS_Close(gfs1);
GFS_Close(gfs2);
GFS_Close(gfs3);