initial commit

slstatus/components/uptime.c

@@ -0,0 +1,34 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdint.h>
+#include <stdio.h>
+#include <time.h>
+
+#include "../slstatus.h"
+#include "../util.h"
+
+#if defined(CLOCK_BOOTTIME)
+	#define UPTIME_FLAG CLOCK_BOOTTIME
+#elif defined(CLOCK_UPTIME)
+	#define UPTIME_FLAG CLOCK_UPTIME
+#else
+	#define UPTIME_FLAG CLOCK_MONOTONIC
+#endif
+
+const char *
+uptime(const char *unused)
+{
+	char warn_buf[256];
+	uintmax_t h, m;
+	struct timespec uptime;
+
+	if (clock_gettime(UPTIME_FLAG, &uptime) < 0) {
+		snprintf(warn_buf, 256, "clock_gettime %d", UPTIME_FLAG);
+		warn(warn_buf);
+		return NULL;
+	}
+
+	h = uptime.tv_sec / 3600;
+	m = uptime.tv_sec % 3600 / 60;
+
+	return bprintf("%juh %jum", h, m);
+}