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MFC r204248,r204249 - "fancy snake_saver" with color coded load averages

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This commit is contained in:
ivoras 2010-03-26 14:03:42 +00:00
parent 34dd3613f5
commit a6d2161b94
1 changed files with 49 additions and 6 deletions
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55
sys/dev/syscons/snake/snake_saver.c
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@ -36,6 +36,8 @@
#include <sys/sysctl.h>
#include <sys/consio.h>
#include <sys/fbio.h>
#include <sys/resourcevar.h>
#include <sys/smp.h>
#include <machine/pc/display.h>
@ -48,11 +50,22 @@ static int *messagep;
static int messagelen;
static int blanked;
#define MSGBUF_LEN 70
static int nofancy = 0;
TUNABLE_INT("hw.syscons.saver_snake_nofancy", &nofancy);
#define FANCY_SNAKE (!nofancy)
#define LOAD_HIGH(ld) (((ld * 100 + FSCALE / 2) >> FSHIFT) / 100)
#define LOAD_LOW(ld) (((ld * 100 + FSCALE / 2) >> FSHIFT) % 100)
static inline void update_msg(void);
static int
snake_saver(video_adapter_t *adp, int blank)
{
static int dirx, diry;
int f;
int f, color, load;
sc_softc_t *sc;
scr_stat *scp;
@ -99,22 +112,52 @@ snake_saver(video_adapter_t *adp, int blank)
(random() % 20) == 0)
diry = -diry;
savs[0] += dirx + diry;
if (FANCY_SNAKE) {
update_msg();
load = ((averunnable.ldavg[0] * 100 + FSCALE / 2) >> FSHIFT);
if (load == 0)
color = FG_LIGHTGREY | BG_BLACK;
else if (load / mp_ncpus <= 50)
color = FG_LIGHTGREEN | BG_BLACK;
else if (load / mp_ncpus <= 75)
color = FG_YELLOW | BG_BLACK;
else if (load / mp_ncpus <= 99)
color = FG_LIGHTRED | BG_BLACK;
else
color = FG_RED | FG_BLINK | BG_BLACK;
} else
color = FG_LIGHTGREY | BG_BLACK;
for (f=messagelen-1; f>=0; f--)
sc_vtb_putc(&scp->scr, savs[f], sc->scr_map[save[f]],
(FG_LIGHTGREY | BG_BLACK) << 8);
color << 8);
} else
blanked = 0;
return 0;
}
static inline void
update_msg(void)
{
if (!FANCY_SNAKE) {
messagelen = sprintf(message, "%s %s", ostype, osrelease);
return;
}
messagelen = snprintf(message, MSGBUF_LEN,
"%s %s (%d.%02d %d.%02d, %d.%02d)",
ostype, osrelease,
LOAD_HIGH(averunnable.ldavg[0]), LOAD_LOW(averunnable.ldavg[0]),
LOAD_HIGH(averunnable.ldavg[1]), LOAD_LOW(averunnable.ldavg[1]),
LOAD_HIGH(averunnable.ldavg[2]), LOAD_LOW(averunnable.ldavg[2]));
}
static int
snake_init(video_adapter_t *adp)
{
messagelen = strlen(ostype) + 1 + strlen(osrelease);
message = malloc(messagelen + 1, M_DEVBUF, M_WAITOK);
sprintf(message, "%s %s", ostype, osrelease);
messagep = malloc(messagelen * sizeof *messagep, M_DEVBUF, M_WAITOK);
message = malloc(MSGBUF_LEN, M_DEVBUF, M_WAITOK);
messagep = malloc(MSGBUF_LEN * sizeof *messagep, M_DEVBUF, M_WAITOK);
update_msg();
return 0;
}