Bruce says: "You have been programming in the kernel for too long :-)."
and he's right ... I forgot about this floating point stuff you can use in user-land :-) Increase precision of duration to microseconds. No heuristics to avoid overflow in calculation needed - just depend on DBL_MAX being a bit larger than LONG_MAX. Use double instead of `struct timeval' in dd.h so that everything doesn't have to include <sys/time.h>. Fixed style bugs in recent and old FreeBSD changes. Reviewed by: phk Submitted by: bde
This commit is contained in:
Poul-Henning Kamp
parent
ac55eca46c
commit
ad66f7ee71
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=19720
@ -34,7 +34,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: args.c,v 1.3 1994/09/24 02:54:42 davidg Exp $
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* $Id: args.c,v 1.4 1996/11/12 23:08:58 phk Exp $
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*/
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#ifndef lint
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@ -49,7 +49,6 @@ static char sccsid[] = "@(#)args.c 8.3 (Berkeley) 4/2/94";
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include "dd.h"
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#include "extern.h"
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@ -101,7 +100,7 @@ jcl(argv)
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in.dbsz = out.dbsz = 512;
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while ((oper = *++argv)) {/* JEAG */
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while ((oper = *++argv) != NULL) {
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if ((arg = strchr(oper, '=')) == NULL)
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errx(1, "unknown operand %s", oper);
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*arg++ = '\0';
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@ -34,7 +34,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: conv.c,v 1.3 1994/09/24 02:54:44 davidg Exp $
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* $Id: conv.c,v 1.4 1996/11/12 23:09:04 phk Exp $
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*/
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#ifndef lint
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@ -45,7 +45,6 @@ static char sccsid[] = "@(#)conv.c 8.3 (Berkeley) 4/2/94";
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#include <err.h>
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#include <string.h>
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#include <sys/time.h>
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#include "dd.h"
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#include "extern.h"
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@ -62,7 +61,7 @@ def()
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int cnt;
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u_char *inp, *t;
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if ((t = ctab))
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if ((t = ctab) != NULL)
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for (inp = in.dbp - (cnt = in.dbrcnt); cnt--; ++inp)
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*inp = t[*inp];
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@ -106,7 +105,6 @@ block()
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int ch, cnt, maxlen;
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u_char *inp, *outp, *t;
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ch = 0;
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/*
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* Record truncation can cross block boundaries. If currently in a
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* truncation state, keep tossing characters until reach a newline.
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@ -131,9 +129,10 @@ block()
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* Copy records (max cbsz size chunks) into the output buffer. The
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* translation is done as we copy into the output buffer.
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*/
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ch = 0; /* Help the compiler. */
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for (inp = in.dbp - in.dbcnt, outp = out.dbp; in.dbcnt;) {
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maxlen = MIN(cbsz, in.dbcnt);
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if ((t = ctab))
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if ((t = ctab) != NULL)
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for (cnt = 0;
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cnt < maxlen && (ch = *inp++) != '\n'; ++cnt)
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*outp++ = t[ch];
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@ -217,7 +216,7 @@ unblock()
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u_char *inp, *t;
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/* Translation and case conversion. */
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if ((t = ctab))
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if ((t = ctab) != NULL)
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for (cnt = in.dbrcnt, inp = in.dbp; cnt--;)
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*--inp = t[*inp];
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/*
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10
bin/dd/dd.c
10
bin/dd/dd.c
@ -34,7 +34,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: dd.c,v 1.5 1995/10/23 21:31:48 ache Exp $
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* $Id: dd.c,v 1.6 1996/11/12 23:09:09 phk Exp $
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*/
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#ifndef lint
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@ -56,12 +56,12 @@ static char sccsid[] = "@(#)dd.c 8.5 (Berkeley) 4/2/94";
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <locale.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <locale.h>
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#include "dd.h"
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#include "extern.h"
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@ -85,7 +85,7 @@ main(argc, argv)
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int argc;
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char *argv[];
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{
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(void) setlocale(LC_CTYPE, "");
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(void)setlocale(LC_CTYPE, "");
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jcl(argv);
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setup();
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@ -105,6 +105,7 @@ static void
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setup()
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{
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u_int cnt;
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struct timeval tv;
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if (in.name == NULL) {
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in.name = "stdin";
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@ -213,7 +214,8 @@ setup()
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ctab[cnt] = cnt;
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}
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}
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(void)gettimeofday(&st.start, 0); /* Statistics timestamp. */
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(void)gettimeofday(&tv, (struct timezone *)NULL);
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st.start = tv.tv_sec + tv.tv_usec * 1e-6;
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}
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static void
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@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* @(#)dd.h 8.3 (Berkeley) 4/2/94
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* $Id: dd.h,v 1.2 1994/09/24 02:54:54 davidg Exp $
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* $Id: dd.h,v 1.3 1996/11/12 23:09:12 phk Exp $
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*/
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/* Input/output stream state. */
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@ -70,7 +70,7 @@ typedef struct {
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u_long trunc; /* # of truncated records */
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u_long swab; /* # of odd-length swab blocks */
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u_long bytes; /* # of bytes written */
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struct timeval start; /* start time of dd */
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double start; /* start time of dd */
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} STAT;
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/* Flags (in ddflags). */
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@ -34,7 +34,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: misc.c,v 1.2 1994/09/24 02:55:01 davidg Exp $
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* $Id: misc.c,v 1.3 1996/11/12 23:09:15 phk Exp $
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*/
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#ifndef lint
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@ -42,6 +42,7 @@ static char sccsid[] = "@(#)misc.c 8.3 (Berkeley) 4/2/94";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/time.h>
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#include <err.h>
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#include <stdio.h>
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@ -49,7 +50,6 @@ static char sccsid[] = "@(#)misc.c 8.3 (Berkeley) 4/2/94";
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include "dd.h"
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#include "extern.h"
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@ -58,22 +58,13 @@ void
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summary()
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{
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struct timeval tv;
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long msec;
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double secs;
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char buf[100];
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(void)gettimeofday(&tv, 0);
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tv.tv_sec -= st.start.tv_sec;
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tv.tv_usec -= st.start.tv_usec;
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if (tv.tv_usec < 0) {
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tv.tv_usec += 1000000;
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tv.tv_sec--;
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}
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msec = tv.tv_sec * 1000;
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msec += tv.tv_usec / 1000;
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if (msec == 0)
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msec = 1;
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(void)gettimeofday(&tv, (struct timezone *)NULL);
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secs = tv.tv_sec + tv.tv_usec * 1e-6 - st.start;
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if (secs < 1e-6)
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secs = 1e-6;
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/* Use snprintf(3) so that we don't reenter stdio(3). */
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(void)snprintf(buf, sizeof(buf),
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"%u+%u records in\n%u+%u records out\n",
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@ -89,15 +80,9 @@ summary()
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st.trunc, (st.trunc == 1) ? "block" : "blocks");
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(void)write(STDERR_FILENO, buf, strlen(buf));
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}
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if (msec > 1000000) {
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(void)snprintf(buf, sizeof(buf),
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"%u bytes transferred in %u.%03d secs (%u bytes/sec)\n",
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st.bytes, tv.tv_sec, 0, st.bytes / tv.tv_sec);
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} else {
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(void)snprintf(buf, sizeof(buf),
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"%u bytes transferred in %u.%03d secs (%u bytes/sec)\n",
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st.bytes, msec/1000, msec%1000, st.bytes*1000 / msec);
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}
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(void)snprintf(buf, sizeof(buf),
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"%u bytes transferred in %.6f secs (%.0f bytes/sec)\n",
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st.bytes, secs, st.bytes / secs);
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(void)write(STDERR_FILENO, buf, strlen(buf));
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}
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