static int
pread_f(
int argc,
char **argv)
{
size_t bsize;
off64_t offset;
unsigned int zeed = 0;
long long count, total, tmp;
size_t fsblocksize, fssectsize;
struct timeval t1, t2;
char s1[64], s2[64], ts[64];
char *sp;
int Cflag, qflag, uflag, vflag;
int eof = 0, direction = IO_FORWARD;
int c;
Cflag = qflag = uflag = vflag = 0;
init_cvtnum(&fsblocksize, &fssectsize);
bsize = fsblocksize;
while ((c = getopt(argc, argv, "b:BCFRquvV:Z:")) != EOF) {
switch (c) {
case 'b':
tmp = cvtnum(fsblocksize, fssectsize, optarg);
if (tmp < 0) {
printf(_("non-numeric bsize -- %s\n"), optarg);
return 0;
}
bsize = tmp;
break;
case 'C':
Cflag = 1;
break;
case 'F':
direction = IO_FORWARD;
break;
case 'B':
direction = IO_BACKWARD;
break;
case 'R':
direction = IO_RANDOM;
break;
case 'q':
qflag = 1;
break;
case 'u':
uflag = 1;
break;
case 'v':
vflag = 1;
break;
#ifdef HAVE_PREADV
case 'V':
vectors = strtoul(optarg, &sp, 0);
if (!sp || sp == optarg) {
printf(_("non-numeric vector count == %s\n"),
optarg);
return 0;
}
break;
#endif
case 'Z':
zeed = strtoul(optarg, &sp, 0);
if (!sp || sp == optarg) {
printf(_("non-numeric seed -- %s\n"), optarg);
return 0;
}
break;
default:
return command_usage(&pread_cmd);
}
}
if (optind != argc - 2)
return command_usage(&pread_cmd);
offset = cvtnum(fsblocksize, fssectsize, argv[optind]);
if (offset < 0 && (direction & (IO_RANDOM|IO_BACKWARD))) {
eof = -1; /* read from EOF */
} else if (offset < 0) {
printf(_("non-numeric length argument -- %s\n"), argv[optind]);
return 0;
}
optind++;
count = cvtnum(fsblocksize, fssectsize, argv[optind]);
if (count < 0 && (direction & (IO_RANDOM|IO_FORWARD))) {
eof = -1; /* read to EOF */
} else if (count < 0) {
printf(_("non-numeric length argument -- %s\n"), argv[optind]);
return 0;
}
if (alloc_buffer(bsize, uflag, 0xabababab) < 0)
return 0;
gettimeofday(&t1, NULL);
switch (direction) {
case IO_RANDOM:
if (!zeed) /* srandom seed */
zeed = time(NULL);
c = read_random(file->fd, offset, count, &total, zeed, eof);
break;
case IO_FORWARD:
c = read_forward(file->fd, offset, count, &total, vflag, 0, eof);
if (eof)
count = total;
break;
case IO_BACKWARD:
c = read_backward(file->fd, &offset, &count, &total, eof);
break;
default:
ASSERT(0);
}
if (c < 0)
return 0;
if (qflag)
return 0;
gettimeofday(&t2, NULL);
t2 = tsub(t2, t1);
/* Finally, report back -- -C gives a parsable format */
timestr(&t2, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0);
if (!Cflag) {
cvtstr((double)total, s1, sizeof(s1));
cvtstr(tdiv((double)total, t2), s2, sizeof(s2));
printf(_("read %lld/%lld bytes at offset %lld\n"),
total, count, (long long)offset);
printf(_("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n"),
s1, c, ts, s2, tdiv((double)c, t2));
} else {/* bytes,ops,time,bytes/sec,ops/sec */
printf("%lld,%d,%s,%.3f,%.3f\n",
total, c, ts,
tdiv((double)total, t2), tdiv((double)c, t2));
}
return 0;
}
static int
pread_f(
int argc,
char **argv)
{
size_t bsize;
off64_t offset;
unsigned int zeed = 0;
long long count, total, tmp;
size_t fsblocksize, fssectsize;
struct timeval t1, t2;
char *sp;
int Cflag, qflag, uflag, vflag;
int eof = 0, direction = IO_FORWARD;
int c;
Cflag = qflag = uflag = vflag = 0;
init_cvtnum(&fsblocksize, &fssectsize);
bsize = fsblocksize;
while ((c = getopt(argc, argv, "b:BCFRquvV:Z:")) != EOF) {
switch (c) {
case 'b':
tmp = cvtnum(fsblocksize, fssectsize, optarg);
if (tmp < 0) {
printf(_("non-numeric bsize -- %s\n"), optarg);
return 0;
}
bsize = tmp;
break;
case 'C':
Cflag = 1;
break;
case 'F':
direction = IO_FORWARD;
break;
case 'B':
direction = IO_BACKWARD;
break;
case 'R':
direction = IO_RANDOM;
break;
case 'q':
qflag = 1;
break;
case 'u':
uflag = 1;
break;
case 'v':
vflag = 1;
break;
#ifdef HAVE_PREADV
case 'V':
vectors = strtoul(optarg, &sp, 0);
if (!sp || sp == optarg) {
printf(_("non-numeric vector count == %s\n"),
optarg);
return 0;
}
break;
#endif
case 'Z':
zeed = strtoul(optarg, &sp, 0);
if (!sp || sp == optarg) {
printf(_("non-numeric seed -- %s\n"), optarg);
return 0;
}
break;
default:
return command_usage(&pread_cmd);
}
}
if (optind != argc - 2)
return command_usage(&pread_cmd);
offset = cvtnum(fsblocksize, fssectsize, argv[optind]);
if (offset < 0 && (direction & (IO_RANDOM|IO_BACKWARD))) {
eof = -1; /* read from EOF */
} else if (offset < 0) {
printf(_("non-numeric length argument -- %s\n"), argv[optind]);
return 0;
}
optind++;
count = cvtnum(fsblocksize, fssectsize, argv[optind]);
if (count < 0 && (direction & (IO_RANDOM|IO_FORWARD))) {
eof = -1; /* read to EOF */
} else if (count < 0) {
printf(_("non-numeric length argument -- %s\n"), argv[optind]);
return 0;
}
if (alloc_buffer(bsize, uflag, 0xabababab) < 0)
return 0;
gettimeofday(&t1, NULL);
switch (direction) {
case IO_RANDOM:
if (!zeed) /* srandom seed */
zeed = time(NULL);
c = read_random(file->fd, offset, count, &total, zeed, eof);
break;
case IO_FORWARD:
c = read_forward(file->fd, offset, count, &total, vflag, 0, eof);
if (eof)
count = total;
break;
case IO_BACKWARD:
c = read_backward(file->fd, &offset, &count, &total, eof);
break;
default:
ASSERT(0);
}
if (c < 0)
return 0;
if (qflag)
return 0;
gettimeofday(&t2, NULL);
t2 = tsub(t2, t1);
report_io_times("read", &t2, (long long)offset, count, total, c, Cflag);
return 0;
}
