void getload(load_list *loadavgs)
{
sgt_cookie_t cookie;
SGT_COOKIE_INIT(&cookie);
SGT_COOKIE_SET_KSYM(&cookie, "avenrun");
/* since IRIX uses an integer data type for this stuff, which is
* 1024 times the floating-point equiv, we don't need to do any
* conversions, because that's what load_list uses (since ttyload
* was originally written for IRIX in the first place). */
if(sysget(SGT_KSYM, (char*)loadavgs, 3 * sizeof(load_t),
SGT_READ | SGT_SUM, &cookie) != (3 * sizeof(load_t)))
{
perror("Couldn't read load data, sysget failed");
exit(1);
}
}
/*
* try to get load average
* Inputs: pointer to array of doubles, number of elements in array
* Returns: 0=array has values, -1=error occurred.
*/
int
try_getloadavg(double *r_ave, size_t s_ave)
{
#ifndef HAVE_GETLOADAVG
#ifdef HAVE_SYS_FIXPOINT_H
fix favenrun[3];
#endif
#if (defined(ultrix) || defined(sun) || defined(__alpha) || defined(dynix))
int i;
#if (defined(sun) || defined(__alpha) || defined(dynix))
long favenrun[3];
if (s_ave > 3) /* bounds check */
return (-1);
#define FIX_TO_DBL(_IN) (((double) _IN)/((double) FSCALE))
#endif
#endif
#if defined(aix4) || defined(aix5) || defined(aix6) || defined(aix7)
perfstat_cpu_total_t cs;
#endif
#if defined(hpux10) || defined(hpux11)
struct pst_dynamic pst_buf;
#endif
#ifdef irix6
int i, favenrun[3];
sgt_cookie_t cookie;
#endif
#endif /* !HAVE_GETLOADAVG */
#ifdef HAVE_GETLOADAVG
if (getloadavg(r_ave, s_ave) == -1)
return (-1);
#elif defined(linux)
{
FILE *in = fopen("/proc/loadavg", "r");
if (!in) {
NETSNMP_LOGONCE((LOG_ERR, "snmpd: cannot open /proc/loadavg\n"));
return (-1);
}
fscanf(in, "%lf %lf %lf", r_ave, (r_ave + 1), (r_ave + 2));
fclose(in);
}
#elif (defined(ultrix) || defined(sun) || defined(__alpha) || defined(dynix))
if (auto_nlist(LOADAVE_SYMBOL, (char *) favenrun, sizeof(favenrun)) ==
0)
return (-1);
for (i = 0; i < s_ave; i++)
*(r_ave + i) = FIX_TO_DBL(favenrun[i]);
#elif defined(hpux10) || defined(hpux11)
if (pstat_getdynamic(&pst_buf, sizeof(struct pst_dynamic), 1, 0) < 0)
return(-1);
r_ave[0] = pst_buf.psd_avg_1_min;
r_ave[1] = pst_buf.psd_avg_5_min;
r_ave[2] = pst_buf.psd_avg_15_min;
#elif defined(aix4) || defined(aix5) || defined(aix6) || defined(aix7)
if(perfstat_cpu_total((perfstat_id_t *)NULL, &cs, sizeof(perfstat_cpu_total_t), 1) > 0) {
r_ave[0] = cs.loadavg[0] / 65536.0;
r_ave[1] = cs.loadavg[1] / 65536.0;
r_ave[2] = cs.loadavg[2] / 65536.0;
}
#elif defined(irix6)
SGT_COOKIE_INIT(&cookie);
SGT_COOKIE_SET_KSYM(&cookie, "avenrun");
sysget(SGT_KSYM, (char*)favenrun, sizeof(favenrun), SGT_READ, &cookie);
for (i = 0; i < s_ave; i++)
r_ave[i] = favenrun[i] / 1000.0;
DEBUGMSGTL(("ucd-snmp/loadave", "irix6: %d %d %d\n", favenrun[0], favenrun[1], favenrun[2]));
#elif !defined(cygwin)
#if defined(NETSNMP_CAN_USE_NLIST) && defined(LOADAVE_SYMBOL)
if (auto_nlist(LOADAVE_SYMBOL, (char *) r_ave, sizeof(double) * s_ave)
== 0)
#endif
return (-1);
#endif
/*
* XXX
* To calculate this, we need to compare
* successive values of the kernel array
* '_cp_times', and calculate the resulting
* percentage changes.
* This calculation needs to be performed
* regularly - perhaps as a background process.
*
* See the source to 'top' for full details.
*
* The linux SNMP HostRes implementation
* uses 'avenrun[0]*100' as an approximation.
* This is less than accurate, but has the
* advantage of being simple to implement!
*
* I'm also assuming a single processor
*/
return 0;
}
void
get_loadavg (uint16_t *loadavg) {
#if defined(__LINUX) /* __LINUX */
FILE *f_loadavg;
float a,b,c;
if ((f_loadavg = fopen("/proc/loadavg","r")) == NULL) {
perror ("get_loadavg: fopen");
exit (1);
}
fscanf (f_loadavg,"%f %f %f",&a,&b,&c);
loadavg[0] = (uint16_t) (a * 100);
loadavg[1] = (uint16_t) (b * 100);
loadavg[2] = (uint16_t) (c * 100);
fclose (f_loadavg);
#elif defined(__IRIX) /* __IRIX */
sgt_cookie_t cookie;
uint32_t tla[3];
SGT_COOKIE_SET_KSYM (&cookie,KSYM_AVENRUN);
if (sysget (SGT_KSYM,(char *)tla,sizeof(uint32_t)*3,SGT_READ,&cookie) == -1) {
FILE *uptime;
char buf[BUFFERLEN];
char *fd; /* first digit */
float f1,f2,f3;
if ((uptime = popen ("/usr/bsd/uptime","r")) == NULL) {
fprintf (stderr,"Warning: Problems executing '/usr/bsd/uptime'\n");
tla[0] = tla[1] = tla[2] = 0;
}
while (fgets (buf,BUFFERLEN,uptime) != NULL) {
if ((fd = strstr(buf,"average:")) != NULL) {
while (!isdigit((int)*fd))
fd++;
if (sscanf (fd,"%f, %f, %f",&f1,&f2,&f3) != 3) {
log_auto (L_WARNING,"Problems on get_loadavg\n");
f1 = f2 = f3 = 0;
}
tla[0] = f1 * 1000;
tla[1] = f2 * 1000;
tla[2] = f3 * 1000;
}
}
pclose (uptime);
}
loadavg[0] = (uint16_t) (tla[0]/10);
loadavg[1] = (uint16_t) (tla[1]/10);
loadavg[2] = (uint16_t) (tla[2]/10);
#elif defined(__OSX) || defined(__FREEBSD)
double fls[3];
if (getloadavg(fls,3)<3) {
log_auto (L_WARNING,"Problems on getloadavg\n");
fls[0]=fls[1]=fls[2]=0.0;
}
loadavg[0] = (uint16_t) (fls[0] * 100);
loadavg[1] = (uint16_t) (fls[1] * 100);
loadavg[2] = (uint16_t) (fls[2] * 100);
#elif defined(__CYGWIN) /* __CYGWIN */
FILE *f_loadavg;
float a,b,c;
if ((f_loadavg = fopen("/proc/loadavg","r")) == NULL) {
perror ("get_loadavg: fopen");
exit (1);
}
fscanf (f_loadavg,"%f %f %f",&a,&b,&c);
loadavg[0] = a * 100;
loadavg[1] = b * 100;
loadavg[2] = c * 100;
fclose (f_loadavg);
#else
# error You need to define the OS, or OS defined not supported
#endif
}