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/* WMBubble dockapp 1.2 - FreeBSD specific code
* Copyright (C) 2001, oleg dashevskii <od@iclub.nsu.ru>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
*
*/
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/resource.h>
#include <sys/sysctl.h>
#include <time.h>
#include <sys/errno.h>
#include <string.h>
#include "include/bubblemon.h"
#include "include/sys_include.h"
extern BubbleMonData bm;
#define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var))
static void getsysctl(const char *name, void *ptr, size_t len)
{
size_t nlen = len;
if (sysctlbyname(name, ptr, &nlen, NULL, 0) == -1) {
fprintf(stderr, "sysctl(%s...) failed: %s\n", name,
strerror(errno));
exit(1);
}
if (nlen != len) {
fprintf(stderr, "sysctl(%s...) expected %lu, got %lu\n",
name, (unsigned long)len, (unsigned long)nlen);
exit(1);
}
}
/* Returns the current CPU load in percent */
int system_cpu(void)
{
int loadPercentage;
int previous_total, previous_load;
int total, load;
unsigned long int cpu_time[CPUSTATES];
int i;
GETSYSCTL("kern.cp_time", cpu_time);
load = cpu_time[CP_USER] + cpu_time[CP_SYS] + cpu_time[CP_NICE];
total = load + cpu_time[CP_IDLE];
i = bm.loadIndex;
previous_load = bm.load[i];
previous_total = bm.total[i];
bm.load[i] = load;
bm.total[i] = total;
bm.loadIndex = (i + 1) % bm.samples;
if (previous_total == 0)
loadPercentage = 0; /* first time here */
else
if (total == previous_total)
loadPercentage = 100;
else
loadPercentage = (100 * (load - previous_load)) /
(total - previous_total);
return loadPercentage;
}
void system_memory(void)
{
u_int new_swappgsin, new_swappgsout;
u_int my_mem_used, my_mem_max;
u_int pagesize;
static int swappgsin = -1;
static int swappgsout = -1;
static int swap_firsttime = 1;
static int swapavail = 0, swapused = 0;
static time_t last_time_swap = 0;
time_t curr_time;
GETSYSCTL("vm.stats.vm.v_page_count", my_mem_max);
GETSYSCTL("vm.stats.vm.v_active_count", my_mem_used);
GETSYSCTL("hw.pagesize", pagesize);
/* only calculate when first time or when changes took place */
/* do not call it more than 1 time per 2 seconds */
/* otherwise it can eat up to 50% of CPU time on heavy swap activity */
curr_time = time(NULL);
GETSYSCTL("vm.stats.vm.v_swappgsin", new_swappgsin);
GETSYSCTL("vm.stats.vm.v_swappgsout", new_swappgsout);
if (swap_firsttime ||
(((new_swappgsin > swappgsin) || (new_swappgsout > swappgsout)) &&
curr_time > last_time_swap + 1)) {
int mib[2], n;
size_t mibsize, size;
struct xswdev xsw;
mibsize = sizeof(mib) / sizeof(mib[0]);
if (sysctlnametomib("vm.swap_info", mib, &mibsize) == -1) {
fprintf(stderr, "sysctlnametomib() failed %s\n",
strerror(errno));
return;
}
swapavail = 0;
swapused = 0;
for (n = 0; ; n++) {
mib[mibsize] = n;
size = sizeof(xsw);
if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1) {
if (errno == ENOENT)
break;
fprintf(stderr, "sysctl() failed: %s\n",
strerror(errno));
return;
}
swapavail += xsw.xsw_nblks;
swapused += xsw.xsw_used;
}
swap_firsttime = 0;
last_time_swap = curr_time;
}
swappgsin = new_swappgsin;
swappgsout = new_swappgsout;
bm.mem_used = my_mem_used * pagesize;
bm.mem_max = my_mem_max * pagesize;
bm.swap_used = swapused * pagesize;
bm.swap_max = swapavail * pagesize;
}
void system_loadavg(void)
{
struct loadavg loadinfo;
int i, mib[2];
size_t size;
mib[0] = CTL_VM;
mib[1] = VM_LOADAVG;
size = sizeof (loadinfo);
if (sysctl(mib, 2, &loadinfo, &size, NULL, 0) >= 0)
for (i = 0; i < 3; i++) {
bm.loadavg[i].i = loadinfo.ldavg[i] / loadinfo.fscale;
bm.loadavg[i].f = ((loadinfo.ldavg[i] * 100 +
loadinfo.fscale / 2) / loadinfo.fscale) % 100;
}
}
/* ex:set ts=8: */
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