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#include "stat.h"
#include <ncurses.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/statvfs.h>
#include <unistd.h>
#include "display.h"
#include "err.h"
#include "log.h"
#include "mem.h"
stat* stat_init() {
stat* s = xmalloc(sizeof(stat));
*s = (stat){
.sysver = "",
.meminfo = {.mem_available = 0, .mem_total = 0},
.diskinfo = {.disk_available = 0, .disk_total = 0},
};
return s;
}
void stat_get_sysver(stat* s) {
FILE* fp = fopen(PROC_PATH_VERSION, "r");
if (!fp) die("Cannot open %s", PROC_PATH_VERSION);
if (fgets(s->sysver, sizeof(s->sysver), fp) != NULL) {
s->sysver[strcspn(s->sysver, "\n")] = '\0';
}
fclose(fp);
}
void stat_print_cpu_info(WINDOW* w, int y, int maxx, stat* s) {
mvwprintw(w, y, maxx - STAT_INFO_WIDTH, " %.2f %%", s->cpu_occupy.cpu);
}
void stat_print_info(WINDOW* w, int y, int maxx, const char* label,
unsigned long total, unsigned long ava) {
unsigned long long t_bytes = total;
unsigned long long a_bytes = ava;
if (strcmp(label, "Mem") == 0 || strcmp(label, "Mem ") == 0) {
t_bytes *= 1024;
a_bytes *= 1024;
}
const char* units[] = {"B", "K", "M", "G", "T"};
int t_idx = 0;
int a_idx = 0;
double d_total = (double)t_bytes;
double d_ava = (double)a_bytes;
while (d_total >= 1024.0 && t_idx < 4) {
d_total /= 1024.0;
t_idx++;
}
while (d_ava >= 1024.0 && a_idx < 4) {
d_ava /= 1024.0;
a_idx++;
}
int startx = maxx - STAT_INFO_WIDTH;
mvwprintw(w, y, startx, " %.2f%s/%.2f%s", d_ava, units[t_idx], d_total,
units[t_idx]);
/* wrefresh(w); */
}
int stat_get_bar_ticks(int maxx, unsigned long long total,
unsigned long long ava) {
if (total == 0) return 0;
if (ava >= total) return 0;
unsigned long long used = total - ava;
unsigned long long slots = (unsigned long long)(maxx);
return (int)((slots * used) / total);
}
void stat_draw_cpu_bar(WINDOW* w, int maxx, int y, int x, stat* s) {
int ava_to_draw_x = maxx - STAT_INFO_WIDTH - BAR_LABEL_WIDTH;
int total_hashes = ava_to_draw_x * s->cpu_occupy.cpu;
log_write(LOG_INFO, "stat_draw_cpu_bar: ava_to_draw = %d", ava_to_draw_x);
log_write(LOG_INFO, "s->cpu_occupy.cpu = %f", s->cpu_occupy.cpu);
log_write(LOG_INFO, "CPU Hashes = %d", total_hashes);
char hashes[2048] = {0};
if (total_hashes > ava_to_draw_x) total_hashes = ava_to_draw_x;
memset(hashes, '#', total_hashes);
hashes[total_hashes] = '\0';
mvwprintw(w, y, x, "%-*s [", 4, "CPU");
wprintw_colorful(w, COLOR_PAIR_PROGRESS, "%.*s", total_hashes, hashes);
int remaining_spaces = ava_to_draw_x - total_hashes;
if (remaining_spaces > 0) {
wprintw(w, "%*s", remaining_spaces, "");
}
waddch(w, ']');
}
void stat_draw_bar(WINDOW* w, const char* label, int maxx, int y, int x,
unsigned long total, unsigned long ava) {
int ava_to_draw_x = maxx - STAT_INFO_WIDTH - BAR_LABEL_WIDTH;
int total_hashes = stat_get_bar_ticks(ava_to_draw_x, total, ava);
char hashes[2048] = {0};
init_pair(COLOR_PAIR_PROGRESS, COLOR_GREEN, COLOR_BLACK);
if (total_hashes > ava_to_draw_x) total_hashes = ava_to_draw_x;
memset(hashes, '#', total_hashes);
hashes[total_hashes] = '\0';
mvwprintw(w, y, x, "%-*s [", 4, label);
wprintw_colorful(w, COLOR_PAIR_PROGRESS, "%.*s", total_hashes, hashes);
int remaining_spaces = ava_to_draw_x - total_hashes;
if (remaining_spaces > 0) {
wprintw(w, "%*s", remaining_spaces, "");
}
waddch(w, ']');
/* wrefresh(w); */
}
void stat_get_meminfo(stat* s) {
static char buf[128];
char key[32] = "";
unsigned long long val = 0;
FILE* fp = fopen(PROC_PATH_MEMINFO, "r");
if (!fp) die("Cannot open %s", PROC_PATH_MEMINFO);
while (fgets(buf, sizeof(buf), fp)) {
if (sscanf(buf, "%31[^:]: %llu", key, &val) == 2) {
if (strcmp(key, "MemTotal") == 0) {
s->meminfo.mem_total = val;
} else if (strcmp(key, "MemAvailable") == 0) {
s->meminfo.mem_available = val;
break;
}
}
}
fclose(fp);
}
void stat_get_diskinfo(stat* s) {
struct statvfs vfs;
if (statvfs("/", &vfs) != 0) {
s->diskinfo.disk_total = 0;
s->diskinfo.disk_available = 0;
log_write(LOG_WARN, "Cannot get disk info");
}
s->diskinfo.disk_total = (unsigned long long)vfs.f_blocks * vfs.f_frsize;
s->diskinfo.disk_available =
(unsigned long long)vfs.f_bavail * vfs.f_frsize;
}
void stat_get_cpuinfo(stat* s) {
char buf[128];
FILE* fp = fopen(PROC_PATH_STAT, "r");
if (!fp) {
log_write(LOG_WARN, "Cannot open %s", PROC_PATH_STAT);
return;
}
fgets(buf, sizeof(buf), fp);
sscanf(buf, "%s %llu %llu %llu %llu", s->cpu_occupy.name,
&s->cpu_occupy.user, &s->cpu_occupy.nice, &s->cpu_occupy.system,
&s->cpu_occupy.idle);
fclose(fp);
}
void stat_calc_cpuocc(stat* s) {
cpu_occupy* co = xmalloc(sizeof(cpu_occupy));
stat_get_cpuinfo(s);
co->idle = s->cpu_occupy.idle;
co->nice = s->cpu_occupy.nice;
co->system = s->cpu_occupy.system;
co->user = s->cpu_occupy.user;
usleep(200000);
stat_get_cpuinfo(s);
unsigned long long t1 = co->user + co->nice + co->system + co->idle;
unsigned long long t2 = s->cpu_occupy.user + s->cpu_occupy.nice +
s->cpu_occupy.system + s->cpu_occupy.idle;
unsigned long long user = s->cpu_occupy.user - co->user;
unsigned long long system = s->cpu_occupy.system - co->system;
s->cpu_occupy.cpu = (user + system) * 1.0 / (t2 - t1);
free(co);
}
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