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+/*-
+ * Copyright (c) 1980, 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#if __STDC__
+# include <stdarg.h>
+#else
+# include <varargs.h>
+#endif
+
+#include "csh.h"
+#include "extern.h"
+
+/*
+ * C Shell - routines handling process timing and niceing
+ */
+static void pdeltat __P((struct timeval *, struct timeval *));
+
+void
+settimes()
+{
+ struct rusage ruch;
+
+ (void) gettimeofday(&time0, NULL);
+ (void) getrusage(RUSAGE_SELF, &ru0);
+ (void) getrusage(RUSAGE_CHILDREN, &ruch);
+ ruadd(&ru0, &ruch);
+}
+
+/*
+ * dotime is only called if it is truly a builtin function and not a
+ * prefix to another command
+ */
+void
+/*ARGSUSED*/
+dotime(v, t)
+ Char **v;
+ struct command *t;
+{
+ struct timeval timedol;
+ struct rusage ru1, ruch;
+
+ (void) getrusage(RUSAGE_SELF, &ru1);
+ (void) getrusage(RUSAGE_CHILDREN, &ruch);
+ ruadd(&ru1, &ruch);
+ (void) gettimeofday(&timedol, NULL);
+ prusage(&ru0, &ru1, &timedol, &time0);
+}
+
+/*
+ * donice is only called when it on the line by itself or with a +- value
+ */
+void
+/*ARGSUSED*/
+donice(v, t)
+ Char **v;
+ struct command *t;
+{
+ register Char *cp;
+ int nval = 0;
+
+ v++, cp = *v++;
+ if (cp == 0)
+ nval = 4;
+ else if (*v == 0 && any("+-", cp[0]))
+ nval = getn(cp);
+ (void) setpriority(PRIO_PROCESS, 0, nval);
+}
+
+void
+ruadd(ru, ru2)
+ register struct rusage *ru, *ru2;
+{
+ tvadd(&ru->ru_utime, &ru2->ru_utime);
+ tvadd(&ru->ru_stime, &ru2->ru_stime);
+ if (ru2->ru_maxrss > ru->ru_maxrss)
+ ru->ru_maxrss = ru2->ru_maxrss;
+
+ ru->ru_ixrss += ru2->ru_ixrss;
+ ru->ru_idrss += ru2->ru_idrss;
+ ru->ru_isrss += ru2->ru_isrss;
+ ru->ru_minflt += ru2->ru_minflt;
+ ru->ru_majflt += ru2->ru_majflt;
+ ru->ru_nswap += ru2->ru_nswap;
+ ru->ru_inblock += ru2->ru_inblock;
+ ru->ru_oublock += ru2->ru_oublock;
+ ru->ru_msgsnd += ru2->ru_msgsnd;
+ ru->ru_msgrcv += ru2->ru_msgrcv;
+ ru->ru_nsignals += ru2->ru_nsignals;
+ ru->ru_nvcsw += ru2->ru_nvcsw;
+ ru->ru_nivcsw += ru2->ru_nivcsw;
+}
+
+void
+prusage(r0, r1, e, b)
+ register struct rusage *r0, *r1;
+ struct timeval *e, *b;
+{
+ register time_t t =
+ (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
+ (r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
+ (r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 +
+ (r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
+ register char *cp;
+ register long i;
+ register struct varent *vp = adrof(STRtime);
+
+ int ms =
+ (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000;
+
+ cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww";
+
+ if (vp && vp->vec[0] && vp->vec[1])
+ cp = short2str(vp->vec[1]);
+
+ for (; *cp; cp++)
+ if (*cp != '%')
+ (void) fputc(*cp, cshout);
+ else if (cp[1])
+ switch (*++cp) {
+
+ case 'U': /* user CPU time used */
+ pdeltat(&r1->ru_utime, &r0->ru_utime);
+ break;
+
+ case 'S': /* system CPU time used */
+ pdeltat(&r1->ru_stime, &r0->ru_stime);
+ break;
+
+ case 'E': /* elapsed (wall-clock) time */
+ pcsecs((long) ms);
+ break;
+
+ case 'P': /* percent time spent running */
+ /* check if it did not run at all */
+ i = (ms == 0) ? 0 : (t * 1000 / ms);
+ /* nn.n% */
+ (void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10);
+ break;
+
+ case 'W': /* number of swaps */
+ i = r1->ru_nswap - r0->ru_nswap;
+ (void) fprintf(cshout, "%ld", i);
+ break;
+
+ case 'X': /* (average) shared text size */
+ (void) fprintf(cshout, "%ld", t == 0 ? 0L :
+ (r1->ru_ixrss - r0->ru_ixrss) / t);
+ break;
+
+ case 'D': /* (average) unshared data size */
+ (void) fprintf(cshout, "%ld", t == 0 ? 0L :
+ (r1->ru_idrss + r1->ru_isrss -
+ (r0->ru_idrss + r0->ru_isrss)) / t);
+ break;
+
+ case 'K': /* (average) total data memory used */
+ (void) fprintf(cshout, "%ld", t == 0 ? 0L :
+ ((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) -
+ (r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t);
+ break;
+
+ case 'M': /* max. Resident Set Size */
+ (void) fprintf(cshout, "%ld", r1->ru_maxrss / 2L);
+ break;
+
+ case 'F': /* page faults */
+ (void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt);
+ break;
+
+ case 'R': /* page reclaims */
+ (void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt);
+ break;
+
+ case 'I': /* FS blocks in */
+ (void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock);
+ break;
+
+ case 'O': /* FS blocks out */
+ (void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock);
+ break;
+
+ case 'r': /* socket messages recieved */
+ (void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv);
+ break;
+
+ case 's': /* socket messages sent */
+ (void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd);
+ break;
+
+ case 'k': /* number of signals recieved */
+ (void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals);
+ break;
+
+ case 'w': /* num. voluntary context switches (waits) */
+ (void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw);
+ break;
+
+ case 'c': /* num. involuntary context switches */
+ (void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw);
+ break;
+ }
+ (void) fputc('\n', cshout);
+}
+
+static void
+pdeltat(t1, t0)
+ struct timeval *t1, *t0;
+{
+ struct timeval td;
+
+ tvsub(&td, t1, t0);
+ (void) fprintf(cshout, "%d.%01d", td.tv_sec, td.tv_usec / 100000);
+}
+
+void
+tvadd(tsum, t0)
+ struct timeval *tsum, *t0;
+{
+
+ tsum->tv_sec += t0->tv_sec;
+ tsum->tv_usec += t0->tv_usec;
+ if (tsum->tv_usec > 1000000)
+ tsum->tv_sec++, tsum->tv_usec -= 1000000;
+}
+
+void
+tvsub(tdiff, t1, t0)
+ struct timeval *tdiff, *t1, *t0;
+{
+
+ tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
+ tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
+ if (tdiff->tv_usec < 0)
+ tdiff->tv_sec--, tdiff->tv_usec += 1000000;
+}
+
+#define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10)
+
+void
+psecs(l)
+ long l;
+{
+ register int i;
+
+ i = l / 3600;
+ if (i) {
+ (void) fprintf(cshout, "%d:", i);
+ i = l % 3600;
+ P2DIG(i / 60);
+ goto minsec;
+ }
+ i = l;
+ (void) fprintf(cshout, "%d", i / 60);
+minsec:
+ i %= 60;
+ (void) fputc(':', cshout);
+ P2DIG(i);
+}
+
+void
+pcsecs(l) /* PWP: print mm:ss.dd, l is in sec*100 */
+ long l;
+{
+ register int i;
+
+ i = l / 360000;
+ if (i) {
+ (void) fprintf(cshout, "%d:", i);
+ i = (l % 360000) / 100;
+ P2DIG(i / 60);
+ goto minsec;
+ }
+ i = l / 100;
+ (void) fprintf(cshout, "%d", i / 60);
+minsec:
+ i %= 60;
+ (void) fputc(':', cshout);
+ P2DIG(i);
+ (void) fputc('.', cshout);
+ P2DIG((int) (l % 100));
+}
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