114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "shared/sockets.h"
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#include "main.h"
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#include "mode.h"
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#include "machine.h"
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#include "load.h"
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///////////////////////////////////////////////////////////////////////////
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// Shows a display very similar to "xload"'s histogram.
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//
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// +--------------------+ +--------------------+
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// |## LOAD 0.44: myh #@| |myhost 0.24 1|
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// | 1| | |||||||||||0|
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// | |||||| | +--------------------+
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// | |||| |||||||| 0|
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// +--------------------+
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//
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int
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xload_screen (int rep, int display, int *flags_ptr)
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{
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static int gauge_hgt = 0;
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static double loads[LCD_MAX_WIDTH];
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int loadtop, i;
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double loadmax = 0, factor;
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int status = 0;
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if ((*flags_ptr & INITIALIZED) == 0) {
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*flags_ptr |= INITIALIZED;
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gauge_hgt = (lcd_hgt > 2) ? (lcd_hgt - 1) : lcd_hgt;
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memset (loads, '\0', sizeof (double) * LCD_MAX_WIDTH);
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sock_send_string (sock, "screen_add X\n");
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sprintf (buffer, "screen_set X -name {X-Load: %s}\n", get_hostname());
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sock_send_string (sock, buffer);
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// Add the vbars...
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for (i = 1; i < lcd_wid; i++) {
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sprintf (tmp, "widget_add X bar%i vbar\n", i);
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sock_send_string (sock, tmp);
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sprintf (tmp, "widget_set X bar%i %i %i 0\n", i, i, lcd_hgt);
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sock_send_string (sock, tmp);
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}
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// And add a title...
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if (lcd_hgt > 2) {
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sock_send_string (sock, "widget_add X title title\n");
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sock_send_string (sock, "widget_set X title {LOAD }\n");
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} else {
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sock_send_string (sock, "widget_add X title string\n");
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sock_send_string (sock, "widget_set X title 1 1 {LOAD}\n");
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sock_send_string (sock, "screen_set X -heartbeat off\n");
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}
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sock_send_string (sock, "widget_add X zero string\n");
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sock_send_string (sock, "widget_add X top string\n");
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sprintf (tmp, "widget_set X zero %i %i 0\n", lcd_wid, lcd_hgt);
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sock_send_string (sock, tmp);
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sprintf (tmp, "widget_set X top %i %i 1\n", lcd_wid, (lcd_hgt + 1 - gauge_hgt));
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sock_send_string (sock, tmp);
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}
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// shift load history
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for (i = 0; i < (lcd_wid - 2); i++)
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loads[i] = loads[i + 1];
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// get new load value
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machine_get_loadavg(&(loads[lcd_wid - 2]));
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// determine max. load from history
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for (i = 0; i < lcd_wid - 1; i++)
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loadmax = max(loadmax, loads[i]);
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// poor man's ceil()
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loadtop = (int) loadmax;
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if (loadtop < loadmax)
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loadtop++;
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loadtop = max(1, loadtop);
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factor = (double) (lcd_cellhgt * gauge_hgt) / (double) loadtop;
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// display load
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sprintf (tmp, "widget_set X top %i %i %i\n", lcd_wid, (lcd_hgt + 1 - gauge_hgt), loadtop);
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sock_send_string (sock, tmp);
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for (i = 0; i < lcd_wid - 1; i++) {
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double x = loads[i] * factor;
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sprintf (tmp, "widget_set X bar%i %i %i %i\n", i + 1, i + 1, lcd_hgt, (int) x);
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sock_send_string (sock, tmp);
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}
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// And now the title...
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if (lcd_hgt > 2)
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sprintf (tmp, "widget_set X title {LOAD %2.2f: %s}\n", loads[lcd_wid - 2], get_hostname());
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else
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sprintf (tmp, "widget_set X title 1 1 {%s %2.2f}\n", get_hostname(), loads[lcd_wid - 2]);
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sock_send_string (sock, tmp);
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// set return status depending on max & current load
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status = (loadmax > LOAD_MIN) ? BACKLIGHT_ON : BACKLIGHT_OFF;
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if (loads[lcd_wid - 2] > LOAD_MAX)
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status = BLINK_ON;
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return status;
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} // End xload_screen()
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