- Add support for filtering the the list of providers by a regular
expression, which makes it possible to only see interesting
providers. "f" is used inside gstat to set a filter, "F" is used to
remove current filter.
- Do not print some uninteresting values in the gstat title line.
- Do not print past the end of the screen.
- Read multiple keystrokes per "wait" when gstat is running.
- Remove a redundant != check, right after check of NULL against the
same variable ("gid").
- Use sysexits.h.
- Do not link against libkvm and libsbuf, they are not actually used.
- Fix a few style(9) issues where I had to touch nearby code anyway.
Approved by: cperciva (mentor)
MFC after: 2 weeks
This commit is contained in:
Simon L. B. Nielsen
parent
95708c5fe3
commit
711385c9d0
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=158771
@ -3,7 +3,7 @@
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PROG= gstat
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MAN= gstat.8
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WARNS?= 5
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DPADD= ${LIBGEOM} ${LIBDEVSTAT} ${LIBKVM} ${LIBBSDXML} ${LIBCURSES} ${LIBSBUF}
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LDADD= -lgeom -ldevstat -lkvm -lbsdxml -lcurses -lsbuf
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DPADD= ${LIBGEOM} ${LIBDEVSTAT} ${LIBBSDXML} ${LIBCURSES} ${LIBEDIT}
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LDADD= -lgeom -ldevstat -lbsdxml -lcurses -ledit
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.include <bsd.prog.mk>
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@ -24,7 +24,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd March 3, 2003
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.Dd May 20, 2006
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.Dt GSTAT 8
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.Os
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.Sh NAME
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@ -33,6 +33,7 @@
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.Sh SYNOPSIS
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.Nm
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.Op Fl acd
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.Op Fl f Ar filter
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.Op Fl I Ar interval
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.Sh DESCRIPTION
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The
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@ -56,6 +57,14 @@ producers.
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Enable display of statistics for delete
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.Pq Dv BIO_DELETE
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operations.
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.It Fl f Ar filter
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A regular expression that can be used to only show statistics for some
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devices.
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Only devices which name match
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.Ar filter
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will be displayed.
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The format of the regular expression is described in
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.Xr re_format 7 .
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.It Fl I Ar interval
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Refresh the
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.Nm
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@ -30,32 +30,44 @@
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*/
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#include <stdio.h>
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#include <sys/devicestat.h>
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#include <sys/mman.h>
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#include <sys/resource.h>
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#include <sys/time.h>
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#include <curses.h>
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#include <devstat.h>
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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 <histedit.h>
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#include <libgeom.h>
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#include <paths.h>
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#include <regex.h>
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#include <stdint.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 <paths.h>
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#include <curses.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <err.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include <libgeom.h>
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#include <sys/resource.h>
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#include <devstat.h>
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#include <sys/devicestat.h>
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static int flag_a, flag_c, flag_d;
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static int flag_I = 500000;
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static void usage(void);
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static const char*
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el_prompt(void)
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{
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return ("Filter: ");
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}
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int
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main(int argc, char **argv)
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{
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int error, i, quit;
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int curx, cury, maxx, maxy, line_len, max_flen;
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struct devstat *gsp, *gsq;
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void *sp, *sq;
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double dt;
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@ -64,12 +76,19 @@ main(int argc, char **argv)
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struct gprovider *pp;
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struct gconsumer *cp;
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struct gident *gid;
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regex_t f_re, tmp_f_re;
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short cf, cb;
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char *p;
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char f_s[100], pf_s[100], tmp_f_s[100];
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const char *line;
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long double ld[11];
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uint64_t u64;
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EditLine *el;
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History *hist;
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HistEvent hist_ev;
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while ((i = getopt(argc, argv, "adcI:")) != -1) {
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f_s[0] = '\0';
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while ((i = getopt(argc, argv, "adcf:I:")) != -1) {
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switch (i) {
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case 'a':
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flag_a = 1;
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@ -80,6 +99,14 @@ main(int argc, char **argv)
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case 'd':
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flag_d = 1;
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break;
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case 'f':
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if (strlen(optarg) > sizeof(f_s) - 1)
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errx(EX_USAGE, "Filter string too long");
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if (regcomp(&f_re, optarg, REG_EXTENDED) != 0)
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errx(EX_USAGE,
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"Invalid filter - see re_format(7)");
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strncpy(f_s, optarg, sizeof(f_s));
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break;
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case 'I':
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p = NULL;
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i = strtoul(optarg, &p, 0);
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@ -114,6 +141,7 @@ main(int argc, char **argv)
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sq = geom_stats_snapshot_get();
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if (sq == NULL)
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err(1, "geom_stats_snapshot()");
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/* Setup curses */
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initscr();
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start_color();
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use_default_colors();
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@ -127,6 +155,20 @@ main(int argc, char **argv)
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nodelay(stdscr, 1);
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intrflush(stdscr, FALSE);
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keypad(stdscr, TRUE);
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/* Setup libedit */
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hist = history_init();
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if (hist == NULL)
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err(EX_SOFTWARE, "history_init()");
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history(hist, &hist_ev, H_SETSIZE, 100);
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el = el_init("gstat", stdin, stdout, stderr);
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if (el == NULL)
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err(EX_SOFTWARE, "el_init");
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el_set(el, EL_EDITOR, "emacs");
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el_set(el, EL_SIGNAL, 1);
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el_set(el, EL_HIST, history, hist);
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el_set(el, EL_PROMPT, el_prompt);
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if (f_s[0] != '\0')
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history(hist, &hist_ev, H_ENTER, f_s);
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geom_stats_snapshot_timestamp(sq, &tq);
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for (quit = 0; !quit;) {
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sp = geom_stats_snapshot_get();
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@ -140,8 +182,26 @@ main(int argc, char **argv)
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geom_stats_snapshot_reset(sp);
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geom_stats_snapshot_reset(sq);
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move(0,0);
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printw("dT: %5.3f flag_I %dus sizeof %d i %d\n",
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dt, flag_I, sizeof(*gsp), i);
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printw("dT: %5.3fs w: %.3fs",
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dt, (float)flag_I / 1000000);
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if (f_s[0] != '\0') {
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printw(" filter: ");
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getyx(stdscr, cury, curx);
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getmaxyx(stdscr, maxy, maxx);
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strncpy(pf_s, f_s, sizeof(pf_s));
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max_flen = maxx - curx - 1;
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if ((int)strlen(f_s) > max_flen && max_flen >= 0) {
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if (max_flen > 3)
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pf_s[max_flen - 3] = '.';
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if (max_flen > 2)
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pf_s[max_flen - 2] = '.';
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if (max_flen > 1)
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pf_s[max_flen - 1] = '.';
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pf_s[max_flen] = '\0';
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}
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printw("%s", pf_s);
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}
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printw("\n");
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printw(" L(q) ops/s ");
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printw(" r/s kBps ms/r ");
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printw(" w/s kBps ms/w ");
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@ -165,9 +225,19 @@ main(int argc, char **argv)
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}
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if (gid == NULL)
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continue;
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if (gid != NULL && gid->lg_what == ISCONSUMER &&
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!flag_c)
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if (gid->lg_what == ISCONSUMER && !flag_c)
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continue;
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/* Do not print past end of window */
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getyx(stdscr, cury, curx);
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if (curx > 0)
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continue;
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if ((gid->lg_what == ISPROVIDER
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|| gid->lg_what == ISCONSUMER) && f_s[0] != '\0') {
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pp = gid->lg_ptr;
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if ((regexec(&f_re, pp->lg_name, 0, NULL, 0)
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!= 0))
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continue;
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}
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if (gsp->sequence0 != gsp->sequence1) {
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printw("*\n");
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continue;
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@ -237,38 +307,77 @@ main(int argc, char **argv)
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*gsq = *gsp;
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}
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geom_stats_snapshot_free(sp);
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getyx(stdscr, cury, curx);
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getmaxyx(stdscr, maxy, maxx);
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clrtobot();
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if (maxy - 1 <= cury)
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move(maxy - 1, 0);
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refresh();
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usleep(flag_I);
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i = getch();
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switch (i) {
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case '>':
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flag_I *= 2;
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break;
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case '<':
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flag_I /= 2;
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if (flag_I < 1000)
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flag_I = 1000;
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break;
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case 'c':
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flag_c = !flag_c;
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break;
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case 'q':
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quit = 1;
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break;
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default:
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break;
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while((i = getch()) != ERR) {
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switch (i) {
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case '>':
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flag_I *= 2;
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break;
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case '<':
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flag_I /= 2;
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if (flag_I < 1000)
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flag_I = 1000;
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break;
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case 'c':
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flag_c = !flag_c;
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break;
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case 'f':
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move(0,0);
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clrtoeol();
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refresh();
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line = el_gets(el, &line_len);
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if (line == NULL)
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err(1, "el_gets");
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if (line_len > 1)
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history(hist, &hist_ev, H_ENTER, line);
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strncpy(tmp_f_s, line, sizeof(f_s));
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if ((p = strchr(tmp_f_s, '\n')) != NULL)
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*p = '\0';
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/*
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* We have to clear since we messed up
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* curses idea of the screen by using
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* libedit.
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*/
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clear();
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refresh();
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if (regcomp(&tmp_f_re, tmp_f_s, REG_EXTENDED)
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!= 0) {
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move(0, 0);
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printw("Invalid filter");
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refresh();
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sleep(1);
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} else {
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strncpy(f_s, tmp_f_s, sizeof(f_s));
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f_re = tmp_f_re;
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}
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break;
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case 'F':
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f_s[0] = '\0';
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break;
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case 'q':
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quit = 1;
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break;
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default:
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break;
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}
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}
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}
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endwin();
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exit (0);
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el_end(el);
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exit(EX_OK);
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: gstat [-acd] [-I interval]\n");
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exit(1);
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fprintf(stderr, "usage: gstat [-acd] [-f filter] [-I interval]\n");
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exit(EX_USAGE);
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/* NOTREACHED */
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}
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