when i run top, i think uptime would be interesting info to include. there's
some space on the second line under the hostname and time. i tried to squeeze
it on the first line, but there isn't much room with 80 columns.
Index: display.c
===================================================================
RCS file: /cvs/src/usr.bin/top/display.c,v
retrieving revision 1.49
diff -u -p -r1.49 display.c
--- display.c 6 May 2015 07:53:29 -0000 1.49
+++ display.c 26 Oct 2015 10:26:04 -0000
@@ -56,6 +56,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <sys/sysctl.h>
#include "screen.h" /* interface to screen package */
#include "layout.h" /* defines for screen position layout */
@@ -204,6 +205,40 @@ display_init(struct statics * statics)
/* return number of lines available */
return (display_lines);
}
+static void
+format_uptime(char *buf, size_t buflen)
+{
+ time_t now, uptime;
+ int days, hrs, mins;
+ int mib[2];
+ size_t size;
+ struct timeval boottime;
+
+ now = time(NULL);
+ /*
+ * Print how long system has been up.
+ * (Found by getting "boottime" from the kernel)
+ */
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_BOOTTIME;
+ size = sizeof(boottime);
+ if (sysctl(mib, 2, &boottime, &size, NULL, 0) != -1) {
+ uptime = now - boottime.tv_sec;
+ uptime += 30;
+ days = uptime / (3600 * 24);
+ uptime %= (3600 * 24);
+ hrs = uptime / 3600;
+ uptime %= 3600;
+ mins = uptime / 60;
+ if (days > 0)
+ snprintf(buf, buflen, "up %d day%s, %2d:%02d",
+ days, days > 1 ? "s" : "", hrs, mins);
+ else
+ snprintf(buf, buflen, "up %2d:%02d",
+ hrs, mins);
+ }
+}
+
void
i_loadave(pid_t mpid, double *avenrun)
@@ -222,6 +257,7 @@ i_loadave(pid_t mpid, double *avenrun)
for (i = 0; i < 3; i++)
printwp("%c %5.2f", i == 0 ? ':' : ',', avenrun[i]);
}
+
}
/*
@@ -272,6 +308,7 @@ i_procstates(int total, int *states, int
{
if (screen_length > 2 || !smart_terminal) {
char procstates_buffer[MAX_COLS];
+ char uptime[40];
move(1, 0);
clrtoeol();
@@ -286,6 +323,13 @@ i_procstates(int total, int *states, int
states, procstate_names);
addstrp(procstates_buffer);
+
+ format_uptime(uptime, sizeof(uptime));
+ if (smart_terminal)
+ move(1, screen_width - strlen(uptime));
+ else
+ printwp(" ");
+ printwp("%s", uptime);
putn();
}
}
