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Add print_cpu_usage

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Peter Bui 2011-02-26 17:45:12 -05:00 committed by Michael Stapelberg
parent 0a13d30465
commit 8b18e8e33c
3 changed files with 60 additions and 0 deletions
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9
i3status.c
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@ -226,6 +226,11 @@ int main(int argc, char *argv[]) {
CFG_STR("format", "%5min %10min %15min", CFGF_NONE),
CFG_END()
};
cfg_opt_t usage_opts[] = {
CFG_STR("format", "%usage", CFGF_NONE),
CFG_END()
};
cfg_opt_t temp_opts[] = {
CFG_STR("format", "%degrees C", CFGF_NONE),
@ -260,6 +265,7 @@ int main(int argc, char *argv[]) {
CFG_SEC("time", time_opts, CFGF_NONE),
CFG_SEC("ddate", ddate_opts, CFGF_NONE),
CFG_SEC("load", load_opts, CFGF_NONE),
CFG_SEC("cpu_usage", usage_opts, CFGF_NONE),
CFG_END()
};
@ -370,6 +376,9 @@ int main(int argc, char *argv[]) {
CASE_SEC_TITLE("cpu_temperature")
print_cpu_temperature_info(atoi(title), cfg_getstr(sec, "path"), cfg_getstr(sec, "format"));
CASE_SEC("cpu_usage")
print_cpu_usage(cfg_getstr(sec, "format"));
}
printf("\n");
fflush(stdout);

1
include/i3status.h
View File

@ -68,6 +68,7 @@ const char *get_ip_addr();
void print_wireless_info(const char *interface, const char *format_up, const char *format_down);
void print_run_watch(const char *title, const char *pidfile, const char *format);
void print_cpu_temperature_info(int zone, const char *path, const char *format);
void print_cpu_usage(const char *format);
void print_eth_info(const char *interface, const char *format_up, const char *format_down);
void print_load();
void print_volume(const char *fmt, const char *device, const char *mixer, int mixer_idx);

50
src/print_cpu_usage.c Normal file
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@ -0,0 +1,50 @@
// vim:sw=8:sts=8:ts=8:expandtab
#include <stdlib.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include "i3status.h"
static int prev_total = 0;
static int prev_idle = 0;
/*
* Reads the CPU utilization from /proc/stat and returns the usage as a
* percentage.
*
*/
void print_cpu_usage(const char *format) {
const char *walk;
char buf[1024];
int curr_user, curr_nice, curr_system, curr_idle, curr_total;
int diff_idle, diff_total, diff_usage;
#if defined(LINUX)
static char statpath[512];
strcpy(statpath, "/proc/stat");
if (!slurp(statpath, buf, sizeof(buf)))
die("could not read %s\n", statpath);
if (sscanf(buf, "cpu %d %d %d %d", &curr_user, &curr_nice, &curr_system, &curr_idle) != 4)
die("could not read cpu utilization\n");
curr_total = curr_user + curr_nice + curr_system + curr_idle;
diff_idle = curr_idle - prev_idle;
diff_total = curr_total - prev_total;
diff_usage = (1000 * (diff_total - diff_idle)/diff_total + 5)/10;
prev_total = curr_total;
prev_idle = curr_idle;
#endif
for (walk = format; *walk != '\0'; walk++) {
if (*walk != '%') {
putchar(*walk);
continue;
}
if (strncmp(walk+1, "usage", strlen("usage")) == 0) {
printf("%02d%%", diff_usage);
walk += strlen("usage");
}
}
}