1 files changed, 85 insertions, 0 deletions
diff --git a/statuses/cpuusage.c b/statuses/cpuusage.c
new file mode 100644
index 0000000..fa92829
--- /dev/null
+++ b/statuses/cpuusage.c
@@ -0,0 +1,85 @@
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include "cpuusage.h"
+#include "../config.h"
+
+#ifndef NUM_CPUS
+	#define NUM_CPUS 1
+#endif
+#ifndef CPU_HISTORY_SIZE
+	#define CPU_HISTORY_SIZE 1
+#endif
+#if CPU_HISTORY_SIZE < 1
+	#define CPU_HISTORY_SIZE 1
+#endif
+
+
+unsigned long last_cpu_used = 0;
+unsigned long last_cpu_total = 0;
+float cpu_history[CPU_HISTORY_SIZE]; // don't care about init values
+
+void status_cpuusage()
+{
+	double loadavg[3] = { -13.37, -13.37, -13.37 } ;
+	
+	char *stline = NULL;
+	size_t stlen;
+	FILE *stfile;
+	
+	unsigned long cpu_user;
+	unsigned long cpu_nice;
+	unsigned long cpu_sys;
+	unsigned long cpu_used;
+	unsigned long cpu_idle;
+	unsigned long cpu_total;
+	int i;
+	
+	
+	fputs("^fg(yellow)", stdout);	// Error signaling color
+	
+	stfile = fopen("/proc/stat", "r");
+	if (stfile != NULL)
+	{
+		for(i = CPU_HISTORY_SIZE - 1; i > 0; i--)
+			cpu_history[i] = cpu_history[i - 1];
+		
+		stlen = getline(&stline, &stlen, stfile);
+		fclose(stfile);
+		
+		if ( 4 == sscanf(stline, "%*s %ld %ld %ld %ld", &cpu_user, &cpu_nice, &cpu_sys, &cpu_idle) );
+		{
+			cpu_used = cpu_user + cpu_nice + cpu_sys;
+			cpu_total = cpu_used + cpu_idle;
+			
+			// Now do the percentage
+			cpu_history[0] = (float)(cpu_used - last_cpu_used) /
+						(float)(cpu_total - last_cpu_total);
+			
+			last_cpu_used = cpu_used;
+			last_cpu_total = cpu_total;
+			
+			
+			if (cpu_history[0] < 0.4)
+				fputs("^fg(#0077FF)", stdout);	// CPU idling OK
+			else
+				fputs("^fg(#FF00FF)", stdout);	// CPU busy
+			
+			//printf(" CPU: %.0f%% ", cpu_history[0] * 100);
+		}
+		
+		free(stline);
+	}
+	
+	
+	if (getloadavg(loadavg, 3) > 0);
+		printf(" %s%.0f,%.0f,%.0f,%.0f ",
+			cpu_history[0] < 0.1000 ? " " : "",
+			cpu_history[0] * 100,
+			loadavg[0] * (100 / 1),
+			loadavg[1] * (100 / 1),	// (100 / NUM_CPUS)
+			loadavg[2] * (100 / 1));
+	
+	//fputs(" CPU usage ", stdout);
+}