98 lines
3.5 KiB
C
98 lines
3.5 KiB
C
/*
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* Copyright 1997 Massachusetts Institute of Technology
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*
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* Permission to use, copy, modify, and distribute this software and
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* its documentation for any purpose and without fee is hereby
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* granted, provided that both the above copyright notice and this
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* permission notice appear in all copies, that both the above
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* copyright notice and this permission notice appear in all
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* supporting documentation, and that the name of M.I.T. not be used
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* in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission. M.I.T. makes
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* no representations about the suitability of this software for any
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* purpose. It is provided "as is" without express or implied
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* warranty.
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*
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* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
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* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
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* SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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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* $Id$
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*/
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/*
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* mode.c - mechanisms for dealing with SGI-style modal displays.
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*
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* There are four generally-understood useful modes for status displays
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* of the sort exemplified by the IRIX ``netstat -C'' and ``osview''
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* programs. We try to follow their example, although the user interface
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* and terminology slightly differ.
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*
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* RATE - the default mode - displays the precise rate of change in
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* each statistic in units per second, regardless of the actual display
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* update interval.
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*
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* DELTA - displays the change in each statistic over the entire
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* display update interval (i.e., RATE * interval).
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*
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* SINCE - displays the total change in each statistic since the module
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* was last initialized or reset.
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*
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* ABSOLUTE - displays the current value of each statistic.
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*
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* In the SGI programs, these modes are selected by the single-character
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* commands D, W, N, and A. In systat, they are the slightly-harder-to-type
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* ``mode delta'', etc. The initial value for SINCE mode is initialized
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* when the module is first started and can be reset using the ``reset''
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* command (as opposed to the SGI way where changing modes implicitly
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* resets). A ``mode'' command with no arguments displays the current
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* mode in the command line.
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*/
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#include <sys/types.h>
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#include "systat.h"
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#include "extern.h"
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#include "mode.h"
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enum mode currentmode = display_RATE;
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static const char *const modes[] = { "rate", "delta", "since", "absolute" };
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int
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cmdmode(char *cmd, char *args)
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{
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if (prefix(cmd, "mode")) {
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if (args[0] == '\0') {
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move(CMDLINE, 0);
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clrtoeol();
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printw("%s", modes[currentmode]);
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} else if (prefix(args, "rate")) {
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currentmode = display_RATE;
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} else if (prefix(args, "delta")) {
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currentmode = display_DELTA;
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} else if (prefix(args, "since")) {
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currentmode = display_SINCE;
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} else if (prefix(args, "absolute")) {
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currentmode = display_ABS;
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} else {
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printw("unknown mode `%s'", args);
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}
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return 1;
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}
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if(prefix(cmd, "reset")) {
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curcmd->c_reset();
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return 1;
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}
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return 0;
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}
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