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