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f5a5e9653b44273ebeeedf043d30352fd2d6003e
lcdproc/clients/lcdproc/cpu.c
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William Ferrell f5a5e9653b Removed lcddriver.c (doesn't do anything, isn't in any makefiles, etc.). 
Passed *every* piece of source in this project through indent. I'm setting
things up with ctags soon and am actually going to *gasp* use a nice
programming environment to continue development in. :)
2000-03-30 20:20:41 +00:00

373 lines
10 KiB
C
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include "../../shared/sockets.h"
#include "../../shared/debug.h"
#include "main.h"
#include "mode.h"
#include "cpu.h"
struct load {
unsigned long total, user, system, nice, idle;
};
int load_fd = 0;
static void get_load (struct load *result);
static void
get_load (struct load *result)
{
static struct load last_load = { 0, 0, 0, 0, 0 };
struct load curr_load;
reread (load_fd, "get_load:");
sscanf (buffer, "%*s %lu %lu %lu %lu\n", &curr_load.user, &curr_load.nice, &curr_load.system, &curr_load.idle);
curr_load.total = curr_load.user + curr_load.nice + curr_load.system + curr_load.idle;
result->total = curr_load.total - last_load.total;
result->user = curr_load.user - last_load.user;
result->nice = curr_load.nice - last_load.nice;
result->system = curr_load.system - last_load.system;
result->idle = curr_load.idle - last_load.idle;
last_load.total = curr_load.total;
last_load.user = curr_load.user;
last_load.nice = curr_load.nice;
last_load.system = curr_load.system;
last_load.idle = curr_load.idle;
}
int
cpu_init ()
{
if (!load_fd) {
load_fd = open ("/proc/stat", O_RDONLY);
}
return 0;
}
int
cpu_close ()
{
if (load_fd)
close (load_fd);
load_fd = 0;
return 0;
}
//////////////////////////////////////////////////////////////////////////
// CPU screen shows info about percentage of the CPU being used
//
int
cpu_screen (int rep, int display)
{
#undef CPU_BUF_SIZE
#define CPU_BUF_SIZE 4
int i, j, n;
static int first = 1;
float value;
static float cpu[CPU_BUF_SIZE + 1][5]; // last buffer is scratch
struct load load;
if (first) {
first = 0;
sock_send_string (sock, "screen_add C\n");
sprintf (buffer, "screen_set C -name {CPU Use: %s}\n", host);
sock_send_string (sock, buffer);
if (lcd_hgt >= 4) {
sock_send_string (sock, "widget_add C title title\n");
sock_send_string (sock, "widget_set C title {CPU LOAD}\n");
sock_send_string (sock, "widget_add C one string\n");
sock_send_string (sock, "widget_set C one 1 2 {0 1 Sys 0.0%}\n");
sock_send_string (sock, "widget_add C two string\n");
sock_send_string (sock, "widget_add C three string\n");
sock_send_string (sock, "widget_set C one 1 2 {Usr 0.0% Nice 0.0%}\n");
sock_send_string (sock, "widget_set C two 1 3 {Sys 0.0% Idle 0.0%}\n");
sock_send_string (sock, "widget_set C three 1 4 {0% 100%}\n");
sock_send_string (sock, "widget_add C usr string\n");
sock_send_string (sock, "widget_add C nice string\n");
sock_send_string (sock, "widget_add C idle string\n");
sock_send_string (sock, "widget_add C sys string\n");
sock_send_string (sock, "widget_add C bar hbar\n");
sock_send_string (sock, "widget_set C bar 3 4 0\n");
} else {
sock_send_string (sock, "widget_add C cpu0 string\n");
if (lcd_wid >= 20)
sock_send_string (sock, "widget_set C cpu0 1 1 {CPU0[ ]}\n");
else
sock_send_string (sock, "widget_set C cpu0 1 1 {CPU0[ ]}\n");
sock_send_string (sock, "widget_add C cpu0% string\n");
sprintf (buffer, "widget_set C cpu0%% 1 %i { 0.0%%}\n", lcd_wid - 4);
sock_send_string (sock, buffer);
sock_send_string (sock, "widget_add C usni string\n");
sock_send_string (sock, "widget_set C usni 1 2 { U S N I}\n");
sock_send_string (sock, "widget_add C usr hbar\n");
sock_send_string (sock, "widget_add C sys hbar\n");
sock_send_string (sock, "widget_add C nice hbar\n");
sock_send_string (sock, "widget_add C idle hbar\n");
sock_send_string (sock, "widget_add C total hbar\n");
sock_send_string (sock, "widget_set C total 6 1 0\n");
}
return 0;
}
//else return 0;
get_load (&load);
// Shift values over by one
for (i = 0; i < (CPU_BUF_SIZE - 1); i++)
for (j = 0; j < 5; j++)
cpu[i][j] = cpu[i + 1][j];
// Read new data
cpu[CPU_BUF_SIZE - 1][0] = ((float) load.user / (float) load.total) * 100.0;
cpu[CPU_BUF_SIZE - 1][1] = ((float) load.system / (float) load.total) * 100.0;
cpu[CPU_BUF_SIZE - 1][2] = ((float) load.nice / (float) load.total) * 100.0;
cpu[CPU_BUF_SIZE - 1][3] = ((float) load.idle / (float) load.total) * 100.0;
cpu[CPU_BUF_SIZE - 1][4] = (((float) load.user + (float) load.system + (float) load.nice) / (float) load.total) * 100.0;
// Only clear on first display...
if (!rep) {
/*
// Make all the same, if this is the first time...
for(i=0; i<CPU_BUF_SIZE-1; i++)
for(j=0; j<5; j++)
cpu[i][j] = cpu[CPU_BUF_SIZE-1][j];
*/
}
// Average values for final result
for (i = 0; i < 5; i++) {
value = 0;
for (j = 0; j < CPU_BUF_SIZE; j++) {
value += cpu[j][i];
}
value /= CPU_BUF_SIZE;
cpu[CPU_BUF_SIZE][i] = value;
}
if (lcd_hgt >= 4) {
value = cpu[CPU_BUF_SIZE][4];
n = (int) (value * 70.0);
if (value >= 99.9) {
sprintf (tmp, "100%%");
} else {
sprintf (tmp, "%4.1f%%", value);
}
sprintf (buffer, "widget_set C title {CPU %s: %s}\n", tmp, host);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][0];
if (value >= 99.9) {
sprintf (tmp, " 100%%");
} else {
sprintf (tmp, "%4.1f%%", value);
}
sprintf (buffer, "widget_set C usr 5 2 {%s}\n", tmp);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][1];
if (value >= 99.9) {
sprintf (tmp, " 100%%");
} else {
sprintf (tmp, "%4.1f%%", value);
}
sprintf (buffer, "widget_set C sys 5 3 {%s}\n", tmp);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][2];
if (value >= 99.9) {
sprintf (tmp, " 100%%");
} else {
sprintf (tmp, "%4.1f%%", value);
}
sprintf (buffer, "widget_set C nice 16 2 {%s}\n", tmp);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][3];
if (value >= 99.9) {
sprintf (tmp, " 100%%");
} else {
sprintf (tmp, "%4.1f%%", value);
}
sprintf (buffer, "widget_set C idle 16 3 {%s}\n", tmp);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][4];
n = (int) (value * (lcd_cellwid * 14) / 100.0);
sprintf (buffer, "widget_set C bar 3 4 %i\n", n);
if (display)
sock_send_string (sock, buffer);
} // end if(lcd_hgt >= 4)
else // 20x2 version
{
value = cpu[CPU_BUF_SIZE][4];
if (value >= 99.9) {
sprintf (tmp, "100%%");
} else {
sprintf (tmp, "%4.1f%%", value);
}
sprintf (buffer, "widget_set C cpu0%% %i 1 {%s}\n", lcd_wid - 4, tmp);
if (display)
sock_send_string (sock, buffer);
n = (float) (value * lcd_cellwid * (float) (lcd_wid - 11)) / 100.0;
sprintf (buffer, "widget_set C total 6 1 %i\n", n);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][0];
n = (float) (value * lcd_cellwid * 4.0) / 100.0;
sprintf (buffer, "widget_set C usr 1 2 %i\n", n);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][1];
n = (float) (value * lcd_cellwid * 3.0) / 100.0;
sprintf (buffer, "widget_set C sys 7 2 %i\n", n);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][2];
n = (float) (value * lcd_cellwid * 3.0) / 100.0;
sprintf (buffer, "widget_set C nice 12 2 %i\n", n);
if (display)
sock_send_string (sock, buffer);
value = cpu[CPU_BUF_SIZE][3];
n = (float) (value * lcd_cellwid * 3.0) / 100.0;
sprintf (buffer, "widget_set C idle 17 2 %i\n", n);
if (display)
sock_send_string (sock, buffer);
}
return 0;
} // End cpu_screen()
//////////////////////////////////////////////////////////////////////////
// Cpu Graph Screen shows a quick-moving histogram of CPU use.
//
int
cpu_graph_screen (int rep, int display)
{
int i, j, n = 0;
static int first = 1;
float value, maxload;
#undef CPU_BUF_SIZE
#define CPU_BUF_SIZE 2
static float cpu[CPU_BUF_SIZE + 1]; // last buffer is scratch
static int cpu_past[LCD_MAX_WIDTH];
struct load load;
int status = 0;
if (first) {
first = 0;
sock_send_string (sock, "screen_add G\n");
sprintf (buffer, "screen_set G -name {CPU Graph: %s}\n", host);
sock_send_string (sock, buffer);
if (lcd_hgt >= 4) {
sock_send_string (sock, "widget_add G title title\n");
sprintf (buffer, "widget_set G title {CPU: %s}\n", host);
} else {
sock_send_string (sock, "widget_add G title string\n");
sprintf (buffer, "widget_set G title 1 1 {CPU: %s}\n", host);
}
sock_send_string (sock, buffer);
for (i = 1; i <= lcd_wid; i++) {
sprintf (tmp, "widget_add G %i vbar\n", i);
sock_send_string (sock, tmp);
sprintf (tmp, "widget_set G %i %i %i 0\n", i, i, lcd_hgt);
sock_send_string (sock, tmp);
}
}
get_load (&load);
// Shift values over by one
for (i = 0; i < (CPU_BUF_SIZE - 1); i++)
cpu[i] = cpu[i + 1];
// Read new data
cpu[CPU_BUF_SIZE - 1] = ((float) load.user + (float) load.system + (float) load.nice) / (float) load.total;
// Only clear on first display...
if (!rep) {
/*
// Make all the same, if this is the first time...
for(i=0; i<CPU_BUF_SIZE-1; i++)
cpu[i] = cpu[CPU_BUF_SIZE-1];
*/
}
// Average values for final result
value = 0;
for (j = 0; j < CPU_BUF_SIZE; j++) {
value += cpu[j];
}
value /= (float) CPU_BUF_SIZE;
cpu[CPU_BUF_SIZE] = value;
maxload = 0;
for (i = 0; i < lcd_wid - 1; i++) {
cpu_past[i] = cpu_past[i + 1];
j = cpu_past[i];
sprintf (tmp, "widget_set G %i %i %i %i\n", i + 1, i + 1, lcd_hgt, j);
if (display)
sock_send_string (sock, tmp);
if (cpu_past[i] > maxload)
maxload = cpu_past[i];
}
value = cpu[CPU_BUF_SIZE];
if (lcd_hgt > 2)
n = (int) (value * (float) (lcd_cellhgt) * (float) (lcd_hgt - 1));
else
n = (int) (value * (float) (lcd_cellhgt) * (float) (lcd_hgt));
cpu_past[lcd_wid - 1] = n;
sprintf (tmp, "widget_set G %i %i %i %i\n", lcd_wid, lcd_wid, lcd_hgt, n);
if (display)
sock_send_string (sock, tmp);
if (n > maxload)
maxload = n;
if (cpu_past[lcd_wid - 1] > 0)
status = BACKLIGHT_ON;
if (maxload < 1)
status = BACKLIGHT_OFF;
// return status;
return 0;
} // End cpu_graph_screen()
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