Category : Files from Magazines
Archive   : SCBENCH.ZIP
Filename : SCBIGRD.C

/*
** BYTE Large File Read Benchmark
** Version 1 for 8088/8086/80286/80386
** Feb. 17, 1988
** Written in BYTE Small-C
** Based on Small-C by J.E. Hendrix
**
** Routine times reading of a 1000000 byte file.
**
*/

#include stdio.h

#define BUFSIZ 10000 /* Size of read buffer */
#define LOOPS 100 /* Number of times to read BUFSIZ characters
to get 1000000 bytes read. */
char *rbuff; /* Pointer to read buffer */
int tblock[4]; /* Timer block */

main()
{
int i;
int fd;

/* Announce program */
printf("BYTE Large File Read Benchmark\n\n");

/* Now allocate (if you can) space for the read */
rbuff=malloc(BUFSIZ);
if(rbuff==NULL) {
printf("Not enough memory for rbuff\n");
exit(0);
}

/* Open the file */
fd=fopen("BIGFILE.DAT","r");

/* Turn on the timer */
gtime(tblock);

/* Loop and read the file */
for(i=0;i read(fd,rbuff,BUFSIZ);

/* Turn off timer and close file */
calctim(tblock);
fclose(fd);

/* Report results */
printf("Results: (HH:MM:SS:1/100ths)\n");
printf("Time to read file: %d:%d:%d:%d\n",tblock[0],tblock[1],
tblock[2],tblock[3]);

exit(0);
}