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03cc353af63a012acc1126b9d2bfb636ccc085f4
lcdproc/clients/lcdproc/cpu.c
T

298 lines
8.3 KiB
C
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#include <sys/types.h>
#include <sys/param.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include "shared/sockets.h"
#include "shared/debug.h"
#include "main.h"
#include "mode.h"
#include "machine.h"
#include "cpu.h"
//////////////////////////////////////////////////////////////////////////
// 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
static int first = TRUE;
static float cpu[CPU_BUF_SIZE + 1][5]; // last buffer is scratch
int i, j, n;
float value;
load_type load;
if(first)
{
first = FALSE;
sock_send_string(sock, "screen_add C\n");
sprintf(buffer, "screen_set C -name {CPU Use: %s}\n", get_hostname());
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 %d { 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);
}
machine_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(!display)
return(0);
if(lcd_hgt >= 4)
{
value = cpu[CPU_BUF_SIZE][4];
if(value >= 99.9)
sprintf(tmp, "100%%");
else
sprintf(tmp, "%4.1f%%", value);
sprintf(buffer, "widget_set C title {CPU %s: %s}\n", tmp, get_hostname());
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);
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);
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);
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);
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 %d\n", n);
sock_send_string(sock, buffer);
}
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%% %d 1 {%s}\n", lcd_wid - 4, tmp);
sock_send_string(sock, buffer);
n = (float)(value * lcd_cellwid * (float) (lcd_wid - 11)) / 100.0;
sprintf(buffer, "widget_set C total 6 1 %d\n", n);
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 %d\n", n);
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 %d\n", n);
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 %d\n", n);
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 %d\n", n);
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)
{
#undef CPU_BUF_SIZE
#define CPU_BUF_SIZE 2
static int first = TRUE;
static float cpu[CPU_BUF_SIZE];
static int cpu_past[LCD_MAX_WIDTH];
int i, j, n = 0;
float value ;
load_type load;
if(first)
{
first = FALSE;
sock_send_string(sock, "screen_add G\n");
sprintf(buffer, "screen_set G -name {CPU Graph: %s}\n", get_hostname());
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", get_hostname());
}
else
{
sock_send_string(sock, "widget_add G title string\n");
sprintf(buffer, "widget_set G title 1 1 {CPU: %s}\n", get_hostname());
}
sock_send_string(sock, buffer);
for(i = 1; i <= lcd_wid; i++)
{
sprintf(buffer, "widget_add G %d vbar\n", i);
sock_send_string(sock, buffer);
sprintf(buffer, "widget_set G %d %d %d 0\n", i, i, lcd_hgt);
sock_send_string(sock, buffer);
cpu_past[i-1] = 0;
};
// Clear out CPU averaging array
for(i = 0; i < CPU_BUF_SIZE ; i++)
cpu[i] = 0.;
}
// Shift values over by one
for(i = 0; i < (CPU_BUF_SIZE-1); i++)
cpu[i] = cpu[i+1];
// Read and save new data
machine_get_load(&load);
cpu[CPU_BUF_SIZE-1] = ((float) load.user + (float) load.system + (float) load.nice) / (float) load.total;
// Average values for final result
value = 0;
for(j = 0; j < CPU_BUF_SIZE; j++)
value += cpu[j];
value /= (float) CPU_BUF_SIZE;
// Scale result to available height
if(lcd_hgt > 2)
n = (int)(value * (float)(lcd_cellhgt) * (float)(lcd_hgt - 1));
else
n = (int)(value * (float)(lcd_cellhgt) * (float)(lcd_hgt));
// Shift and update display the graph
for(i = 0; i < lcd_wid - 1; i++)
{
cpu_past[i] = cpu_past[i + 1];
if(display)
{
sprintf(buffer, "widget_set G %d %d %d %d\n",
i + 1, i + 1, lcd_hgt, cpu_past[i]);
sock_send_string(sock, buffer);
}
}
// Save the newest entry and display it
cpu_past[lcd_wid - 1] = n;
if(display)
{
sprintf(buffer, "widget_set G %d %d %d %d\n", lcd_wid, lcd_wid, lcd_hgt, n);
sock_send_string(sock, buffer);
}
return(0);
} // End cpu_graph_screen()
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