-/* $Id: system.c,v 1.2 2000/03/06 06:04:06 reinelt Exp $
+/* $Id: system.c,v 1.3 2000/03/07 11:01:34 reinelt Exp $
*
* system status retreivement
*
*
*
* $Log: system.c,v $
+ * Revision 1.3 2000/03/07 11:01:34 reinelt
+ *
+ * system.c cleanup
+ *
* Revision 1.2 2000/03/06 06:04:06 reinelt
*
* minor cleanups
* int Memory (void);
* returns main memory (Megabytes)
*
- * double Load (void);
- * returns load average
+ * int Load (double *load1, double *load2, double *load3)
+ * sets load average during thwe last 1, 5 and 15 minutes
+ * retuns 0 if ok, -1 on error
*
- * double Busy (void);
- * returns CPU utilization
+ * int Busy (double *user, double *nice, double *system, double *idle)
+ * sets percentage of CPU time spent in user processes, nice'd processes
+ * system calls and idle state
+ * returns 0 if ok, -1 on error
*
* int Disk (int *r, int *w);
- * returns disk utilization
+ * sets number of read and write accesses to all disks
+ * returns 0 if ok, -1 on error
*
- * int Net (int *r, int *w);
- * returns network utilization
+ * int Net (int *rx, int *tx);
+ * sets number of packets received and transmitted
+ * returns 0 if ok, -1 on error
*
- * double Temperature (void);
- * returns temperature
- * a sensor must be specified with a 'temperature'-line
- * in the config file
+ * int Sensor (int index, double *val, double *min, double *max)
+ * sets the current value of the index'th sensor and
+ * the minimum and maximum values from the config file
+ * returns 0 if ok, -1 on error
*
*/
#include <asm/param.h>
#include "system.h"
+#include "config.h"
#include "filter.h"
-#include "lcd4linux.h"
char *System(void)
{
}
-double Load (void)
+int Load (double *load1, double *load2, double *load3)
{
static int fd=-2;
char buffer[16];
- static double value=0;
+ static double val1=0;
+ static double val2=0;
+ static double val3=0;
static time_t now=0;
- if (fd==-1) return 0;
+ *load1=val1;
+ *load2=val2;
+ *load3=val3;
+
+ if (fd==-1) return -1;
- if (time(NULL)==now) return value;
+ if (time(NULL)==now) return 0;
time(&now);
if (fd==-2) {
fd=open("/proc/loadavg", O_RDONLY);
if (fd==-1) {
perror ("open(/proc/loadavg) failed");
- return 0;
+ return -1;
}
}
if (lseek(fd, 0L, SEEK_SET)!=0) {
perror("lseek(/proc/loadavg) failed");
fd=-1;
- return 0;
+ return -1;
}
if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
perror("read(/proc/loadavg) failed");
fd=-1;
- return 0;
+ return -1;
}
- if (sscanf(buffer, "%lf", &value)<1) {
+ if (sscanf(buffer, "%lf %lf %lf", &val1, &val2, &val3)<3) {
fprintf(stderr, "scanf(/proc/loadavg) failed\n");
fd=-1;
- return 0;
+ return -1;
}
- return (value);
+
+ *load1=val1;
+ *load2=val2;
+ *load3=val3;
+
+ return 0;
}
-double Busy (void)
+int Busy (double *user, double *nice, double *system, double *idle)
{
static int fd=-2;
char buffer[64];
unsigned long v1, v2, v3, v4;
- double busy, idle;
+ double d1, d2, d3, d4, d5;
+
+ *user=0.0;
+ *nice=0.0;
+ *system=0.0;
+ *idle=0.0;
- if (fd==-1) return 0;
+ if (fd==-1) return -1;
if (fd==-2) {
fd=open("/proc/stat", O_RDONLY);
if (fd==-1) {
perror ("open(proc/stat) failed");
- return 0;
+ return -1;
}
}
if (lseek(fd, 0L, SEEK_SET)!=0) {
perror ("lseek(/proc/stat) failed");
fd=-1;
- return 0;
+ return -1;
}
if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
perror ("read(/proc/stat) failed");
fd=-1;
- return 0;
+ return -1;
}
if (sscanf(buffer, "%*s %lu %lu %lu %lu\n", &v1, &v2, &v3, &v4)<4) {
fprintf (stderr, "scanf(/proc/stat) failed\n");
fd=-1;
- return 0;
+ return -1;
}
- busy=smooth("cpu_busy", 500, v1+v2+v3);
- idle=smooth("cpu_idle", 500, v4);
-
- if (busy+idle==0.0)
- return 0.0;
- else
- return busy/(busy+idle);
+ d1=smooth("cpu_user", 500, v1);
+ d2=smooth("cpu_nice", 500, v2);
+ d3=smooth("cpu_sys", 500, v3);
+ d4=smooth("cpu_idle", 500, v4);
+ d5=d1+d2+d3+d4;
+
+ if (d5!=0.0) {
+ *user=(d1+d2)/d5;
+ *nice=d2/d5;
+ *system=d3/d5;
+ *idle=d4/d5;
+ }
+ return 0;
}
*r=0;
*w=0;
- if (fd==-1) return 0;
+ if (fd==-1) return -1;
if (fd==-2) {
fd = open("/proc/stat", O_RDONLY | O_NDELAY);
if (fd==-1) {
perror ("open(/proc/stat) failed");
- return 0;
+ return -1;
}
}
if (lseek(fd, 0L, SEEK_SET)!=0) {
perror ("lseek(/proc/stat) failed");
fd=-1;
- return 0;
+ return -1;
}
if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
perror ("read(/proc/stat) failed");
fd=-1;
- return 0;
+ return -1;
}
p=strstr(buffer, "disk_rblk");
if (p==NULL) {
fprintf (stderr, "parse(/proc/stat) failed: no disk_rblk line\n");
fd=-1;
- return 0;
+ return -1;
}
if (sscanf(p+9, "%lu %lu %lu %lu\n", &r1, &r2, &r3, &r4)<4) {
fprintf (stderr, "scanf(/proc/stat) failed\n");
fd=-1;
- return 0;
+ return -1;
}
p=strstr(buffer, "disk_wblk");
if (p==NULL) {
fprintf (stderr, "parse(/proc/stat) failed: no disk_wblk line\n");
fd=-1;
- return 0;
+ return -1;
}
if (sscanf(p+9, "%lu %lu %lu %lu\n", &w1, &w2, &w3, &w4)<4) {
fprintf (stderr, "scanf(/proc/stat) failed\n");
fd=-1;
- return 0;
+ return -1;
}
*r=smooth ("disk_r", 500, r1+r2+r3+r4);
*w=smooth ("disk_w", 500, w1+w2+w3+w4);
- return *r+*w;
+ return 0;
}
*rx=0;
*tx=0;
- if (fd==-1) return 0;
+ if (fd==-1) return -1;
if (fd==-2) {
fd = open("/proc/net/dev", O_RDONLY | O_NDELAY);
if (fd==-1) {
perror ("open(/proc/net/dev) failed");
- return 0;
+ return -1;
}
}
if (lseek(fd, 0L, SEEK_SET)!=0) {
perror ("lseek(/proc/net/dev) failed");
fd=-1;
- return 0;
+ return -1;
}
if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
perror ("read(/proc/net/dev) failed");
fd=-1;
- return 0;
+ return -1;
}
pkg_rx=0;
pkg_tx=0;
*rx=smooth("net_rx", 500, pkg_rx);
*tx=smooth("net_tx", 500, pkg_tx);
- return *rx+*tx;
+ return 0;
}
-double Temperature (void)
+int Sensor (int index, double *val, double *min, double *max)
{
- static int fd=-2;
char buffer[32];
- static double value=0.0;
- static time_t now=0;
-
- if (fd==-1) return 0;
-
- if (time(NULL)==now) return value;
- time(&now);
+ double value;
+ static int fd[SENSORS]={[0 ... SENSORS]=-2,};
+ static char *sensor[SENSORS]={NULL,};
+ static double val_buf[SENSORS]={0.0,};
+ static double min_buf[SENSORS]={0.0,};
+ static double max_buf[SENSORS]={0.0,};
+ static time_t now[SENSORS]={0,};
+
+ if (index<0 || index>=SENSORS) return -1;
+
+ *val=val_buf[index];
+ *min=min_buf[index];
+ *max=max_buf[index];
+
+ if (fd[index]==-1) return -1;
+
+ if (time(NULL)==now[index]) return 0;
+ time(&now[index]);
+
+ if (fd[index]==-2) {
+ snprintf(buffer, 32, "Sensor%d", index);
+ sensor[index]=cfg_get(buffer);
+ if (sensor[index]==NULL || *sensor[index]=='\0') {
+ fprintf (stderr, "%s: no entry for '%s'\n", cfg_file(), buffer);
+ fd[index]=-1;
+ return -1;
+ }
- if (fd==-2) {
- fd=open(sensor, O_RDONLY);
- if (fd==-1) {
- fprintf (stderr, "open (%s) failed: %s\n", sensor, strerror(errno));
- return 0;
+ snprintf(buffer, 32, "Sensor%d_min", index);
+ min_buf[index]=atof(cfg_get(buffer));
+ snprintf(buffer, 32, "Sensor%d_max", index);
+ max_buf[index]=atof(cfg_get(buffer));
+ if (max_buf[index]==0.0) max_buf[index]=100.0;
+
+ fd[index]=open(sensor[index], O_RDONLY);
+ if (fd[index]==-1) {
+ fprintf (stderr, "open (%s) failed: %s\n", sensor[index], strerror(errno));
+ return -1;
}
}
- if (lseek(fd, 0L, SEEK_SET)!=0) {
- fprintf (stderr, "lseek(%s) failed: %s\n", sensor, strerror(errno));
- fd=-1;
- return 0;
+ if (lseek(fd[index], 0L, SEEK_SET)!=0) {
+ fprintf (stderr, "lseek(%s) failed: %s\n", sensor[index], strerror(errno));
+ fd[index]=-1;
+ return -1;
}
- if (read (fd, &buffer, sizeof(buffer)-1)==-1) {
- fprintf (stderr, "read(%s) failed: %s\n", sensor, strerror(errno));
- fd=-1;
- return 0;
+ if (read (fd[index], &buffer, sizeof(buffer)-1)==-1) {
+ fprintf (stderr, "read(%s) failed: %s\n", sensor[index], strerror(errno));
+ fd[index]=-1;
+ return -1;
}
if (sscanf(buffer, "%*f %*f %lf", &value)<1) {
- fprintf (stderr, "scanf(%s) failed\n", sensor);
- fd=-1;
- return 0;
+ fprintf (stderr, "scanf(%s) failed\n", sensor[index]);
+ fd[index]=-1;
+ return -1;
}
- return (value);
+ val_buf[index]=value;
+ *val=value;
+ return 0;
}
+
+
+#ifdef STANDALONE
+
+int tick, tack, tau;
+
+void main (void)
+{
+ char *cfg_file="./lcd4linux.conf.sample";
+ double load1, load2, load3;
+ double user, nice, system, idle;
+ int r, w;
+ int rx, tx;
+ double val, min, max;
+
+ if (cfg_read (cfg_file)==-1)
+ exit (1);
+
+ tick=atoi(cfg_get("tick"));
+ tack=atoi(cfg_get("tack"));
+ tau=atoi(cfg_get("tau"));
+
+ printf ("System : %s\n", System());
+ printf ("Release : %s\n", Release ());
+ printf ("Processor : %s\n", Processor ());
+ printf ("Memory : %d MB\n", Memory ());
+
+ while (1) {
+
+ Load (&load1, &load2, &load3);
+ printf ("Load : %f %f %f\n", load1, load2, load3);
+
+ Busy (&user, &nice, &system, &idle);
+ printf ("Busy : %f %f %f %f\n", user, nice, system, idle);
+
+ Disk (&r, &w);
+ printf ("Disk : %d %d\n", r, w);
+
+ Net (&rx, &tx);
+ printf ("Net : %d %d\n", rx, tx);
+
+ Sensor (1, &val, &min, &max);
+ printf ("Sensor 1 : %f %f %f\n", val, min, max);
+
+ Sensor (2, &val, &min, &max);
+ printf ("Sensor 2 : %f %f %f\n", val, min, max);
+
+ usleep(tack*1000);
+ }
+
+}
+
+#endif
projects / lcd4linux.git / commitdiff