thermal.c

/* See LICENSE file for copyright and license details. */

#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include <time.h>
#if defined(__OpenBSD__) || defined(__FreeBSD__)
# include <sys/types.h>
# include <sys/sysctl.h>
#endif

#include "bspwmbar.h"
#include "util.h"

void
thermal(draw_context_t *dc, module_option_t *opts)
{
#if defined(__linux)
	static time_t prevtime;
	static unsigned long temp;
	static int thermal_found = -1;

	if (thermal_found == -1) {
		if (access(opts->thermal.sensor, F_OK) != -1)
			thermal_found = 1;
		else
			thermal_found = 0;
	}
	if (!thermal_found)
		return;

	time_t curtime = time(NULL);
	if (curtime - prevtime < 1)
		goto DRAW_THERMAL;
	prevtime = curtime;

	if (pscanf(opts->thermal.sensor, "%ju", &temp) == -1)
		return;

DRAW_THERMAL:
	if (!opts->thermal.prefix)
		opts->thermal.prefix = "";
	if (!opts->thermal.suffix)
		opts->thermal.suffix = "";

	sprintf(buf, "%s%lu%s", opts->thermal.prefix, temp / 1000,
	        opts->thermal.suffix);
#elif defined(__OpenBSD__)
	//int mib[3] = { HW_SENSORS, 0 };
	sprintf(buf, "%sNOIMPL%s", opts->thermal.prefix, opts->thermal.suffix);
#elif defined(__FreeBSD__)
	int temp;
	size_t templen = sizeof(temp);

	char ctlname[64] = { 0 };
	sprintf(ctlname, "hw.acpi.thermal.%s.temperature", opts->thermal.sensor);
	if (sysctlbyname(ctlname, &temp, &templen, NULL, 0) < 0) {
		return;
	}

	double atemp = (double)temp / 10 - 273.15;
	sprintf(buf, "%s%.*f%s", opts->thermal.prefix, 1, atemp,
	        opts->thermal.suffix);
#endif

	draw_text(dc, buf);
}