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/* From wmload.c, v0.9.2, licensed under the GPL. */
#include <config.h>
#include <sys/types.h>
#include <sys/statvfs.h>
#include <math.h>
#include <fcntl.h>
#include <unistd.h>
#include <glibtop.h>
#include <glibtop/cpu.h>
#include <glibtop/mem.h>
#include <glibtop/swap.h>
#include <glibtop/loadavg.h>
#include <glibtop/netload.h>
#include <glibtop/netlist.h>
#include <glibtop/mountlist.h>
#include <glibtop/fsusage.h>
#include "linux-proc.h"
#include "autoscaler.h"
static const unsigned needed_cpu_flags =
(1 << GLIBTOP_CPU_USER) +
(1 << GLIBTOP_CPU_IDLE) +
(1 << GLIBTOP_CPU_SYS) +
(1 << GLIBTOP_CPU_NICE);
#if 0
static const unsigned needed_page_flags =
(1 << GLIBTOP_SWAP_PAGEIN) +
(1 << GLIBTOP_SWAP_PAGEOUT);
#endif
static const unsigned needed_mem_flags =
(1 << GLIBTOP_MEM_USED) +
(1 << GLIBTOP_MEM_FREE);
static const unsigned needed_swap_flags =
(1 << GLIBTOP_SWAP_USED) +
(1 << GLIBTOP_SWAP_FREE);
static const unsigned needed_loadavg_flags =
(1 << GLIBTOP_LOADAVG_LOADAVG);
static const unsigned needed_netload_flags =
(1 << GLIBTOP_NETLOAD_IF_FLAGS) +
(1 << GLIBTOP_NETLOAD_BYTES_TOTAL);
void
GetLoad (int Maximum,
int data [cpuload_n],
LoadGraph *g)
{
MultiloadApplet *multiload;
glibtop_cpu cpu;
long cpu_aux [cpuload_n], used = 0, total = 0;
int current_scaled, used_scaled = 0;
int i;
glibtop_get_cpu (&cpu);
g_return_if_fail ((cpu.flags & needed_cpu_flags) == needed_cpu_flags);
multiload = g->multiload;
multiload->cpu_time [cpuload_usr] = cpu.user;
multiload->cpu_time [cpuload_nice] = cpu.nice;
multiload->cpu_time [cpuload_sys] = cpu.sys;
multiload->cpu_time [cpuload_iowait] = cpu.iowait + cpu.irq + cpu.softirq;
multiload->cpu_time [cpuload_free] = cpu.idle;
if (!multiload->cpu_initialized) {
memcpy (multiload->cpu_last, multiload->cpu_time, sizeof (multiload->cpu_last));
multiload->cpu_initialized = 1;
}
for (i = 0; i < cpuload_n; i++) {
cpu_aux [i] = multiload->cpu_time [i] - multiload->cpu_last [i];
total += cpu_aux [i];
}
for (i = 0; i < cpuload_free; i++) {
used += cpu_aux [i];
current_scaled = rint ((float)(cpu_aux [i] * Maximum) / (float)total);
used_scaled += current_scaled;
data [i] = current_scaled;
}
data [cpuload_free] = Maximum - used_scaled;
multiload->cpu_used_ratio = (float)(used) / (float)total;
memcpy (multiload->cpu_last, multiload->cpu_time, sizeof multiload->cpu_last);
}
void
GetDiskLoad (int Maximum,
int data [diskload_n],
LoadGraph *g)
{
static gboolean first_call = TRUE;
static guint64 lastread = 0, lastwrite = 0;
static AutoScaler scaler;
guint i;
int max;
gboolean nvme_diskstats;
guint64 read, write;
guint64 readdiff, writediff;
MultiloadApplet *multiload;
multiload = g->multiload;
nvme_diskstats = g_settings_get_boolean (multiload->settings, "diskload-nvme-diskstats");
if(first_call)
{
autoscaler_init(&scaler, 60, 500);
}
read = write = 0;
if (nvme_diskstats)
{
FILE *fdr;
char line[255];
guint64 s_read, s_write;
fdr = fopen("/proc/diskstats", "r");
if (!fdr)
{
g_settings_set_boolean (multiload->settings, "diskload-nvme-diskstats", FALSE);
return;
}
while (fgets(line, 255, fdr))
{
/* Match main device, rather than individual partitions (e.g. nvme0n1) */
if (!g_regex_match_simple("\\snvme\\d+\\w+\\d+\\s", line, 0, 0))
{
continue;
}
/*
6 - sectors read
10 - sectors written
*/
if (sscanf(line, "%*d %*d %*s %*d %*d %ld %*d %*d %*d %ld", &s_read, &s_write) == 2)
{
read += 512 * s_read;
write += 512 * s_write;
}
}
fclose(fdr);
}
else
{
glibtop_mountlist mountlist;
glibtop_mountentry *mountentries;
mountentries = glibtop_get_mountlist (&mountlist, FALSE);
for (i = 0; i < mountlist.number; i++)
{
struct statvfs statresult;
glibtop_fsusage fsusage;
if (strstr (mountentries[i].devname, "/dev/") == NULL)
continue;
if (strstr (mountentries[i].mountdir, "/media/") != NULL)
continue;
if (statvfs (mountentries[i].mountdir, &statresult) < 0)
{
g_debug ("Failed to get statistics for mount entry: %s. Reason: %s. Skipping entry.",
mountentries[i].mountdir, strerror(errno));
continue;
}
glibtop_get_fsusage(&fsusage, mountentries[i].mountdir);
read += fsusage.read; write += fsusage.write;
}
g_free(mountentries);
}
readdiff = read - lastread;
writediff = write - lastwrite;
lastread = read;
lastwrite = write;
if(first_call)
{
first_call = FALSE;
memset(data, 0, 3 * sizeof data[0]);
return;
}
max = autoscaler_get_max(&scaler, readdiff + writediff);
multiload->diskload_used_ratio = (float)(readdiff + writediff) / (float)max;
data [diskload_read] = rint ((float)Maximum * (float)readdiff / (float)max);
data [diskload_write] = rint ((float)Maximum * (float)writediff / (float)max);
data [diskload_free] = Maximum - (data [0] + data[1]);
}
#if 0
void
GetPage (int Maximum, int data [3], LoadGraph *g)
{
static int max = 100; /* guess at maximum page rate (= in + out) */
static u_int64_t lastin = 0;
static u_int64_t lastout = 0;
int in, out, idle;
glibtop_swap swap;
glibtop_get_swap (&swap);
assert ((swap.flags & needed_page_flags) == needed_page_flags);
if ((lastin > 0) && (lastin < swap.pagein)) {
in = swap.pagein - lastin;
}
else {
in = 0;
}
lastin = swap.pagein;
if ((lastout > 0) && (lastout < swap.pageout)) {
out = swap.pageout - lastout;
}
else {
out = 0;
}
lastout = swap.pageout;
if ((in + out) > max) {
/* Maximum page rate has increased. Change the scale without
any indication whatsoever to the user (not a nice thing to
do). */
max = in + out;
}
in = rint (Maximum * ((float)in / max));
out = rint (Maximum * ((float)out / max));
idle = Maximum - in - out;
data [0] = in;
data [1] = out;
data [2] = idle;
}
#endif /* 0 */
void
GetMemory (int Maximum,
int data [memload_n],
LoadGraph *g)
{
MultiloadApplet *multiload;
glibtop_mem mem;
guint64 aux [memload_n], cache = 0;
int current_scaled, used_scaled = 0;
int i;
glibtop_get_mem (&mem);
g_return_if_fail ((mem.flags & needed_mem_flags) == needed_mem_flags);
multiload = g->multiload;
multiload->memload_user = mem.user;
multiload->memload_cache = mem.cached;
multiload->memload_total = mem.total;
aux [memload_user] = mem.user;
aux [memload_shared] = mem.shared;
aux [memload_buffer] = mem.buffer;
aux [memload_cached] = mem.cached;
for (i = 0; i < memload_free; i++) {
current_scaled = rint ((float)(aux [i] * Maximum) / (float)mem.total);
if (i != memload_user) {
cache += aux [i];
}
used_scaled += current_scaled;
data [i] = current_scaled;
}
data [memload_free] = MAX (Maximum - used_scaled, 0);
}
void
GetSwap (int Maximum,
int data [swapload_n],
LoadGraph *g)
{
int used;
MultiloadApplet *multiload;
glibtop_swap swap;
glibtop_get_swap (&swap);
g_return_if_fail ((swap.flags & needed_swap_flags) == needed_swap_flags);
multiload = g->multiload;
if (swap.total == 0) {
used = 0;
multiload->swapload_used_ratio = 0.0f;
}
else {
float ratio;
ratio = (float)swap.used / (float)swap.total;
used = rint ((float) Maximum * ratio);
multiload->swapload_used_ratio = ratio;
}
data [0] = used;
data [1] = Maximum - used;
}
void
GetLoadAvg (int Maximum,
int data [2],
LoadGraph *g)
{
glibtop_loadavg loadavg;
MultiloadApplet *multiload;
glibtop_get_loadavg (&loadavg);
g_return_if_fail ((loadavg.flags & needed_loadavg_flags) == needed_loadavg_flags);
multiload = g->multiload;
multiload->loadavg1 = loadavg.loadavg[0];
data [0] = rint ((float) Maximum * loadavg.loadavg[0]);
data [1] = Maximum - data[0];
}
/*
* Return true if a network device (identified by its name) is virtual
* (ie: not corresponding to a physical device). In case it is a physical
* device or unknown, returns false.
*/
static gboolean
is_net_device_virtual(char *device)
{
/*
* There is not definitive way to find out. On some systems (Linux
* kernels ≳ 2.19 without option SYSFS_DEPRECATED), there exist a
* directory /sys/devices/virtual/net which only contains virtual
* devices. It's also possible to detect by the fact that virtual
* devices do not have a symlink "device" in
* /sys/class/net/name-of-dev/ . This second method is more complex
* but more reliable.
*/
gboolean ret = FALSE;
char *path = malloc (strlen (device) + strlen ("/sys/class/net//device") + 1);
if (path == NULL)
return FALSE;
/* Check if /sys/class/net/name-of-dev/ exists (may be old linux kernel
* or not linux at all). */
do {
if (sprintf(path, "/sys/class/net/%s", device) < 0)
break;
if (access(path, F_OK) != 0)
break; /* unknown */
if (sprintf(path, "/sys/class/net/%s/device", device) < 0)
break;
if (access(path, F_OK) != 0)
ret = TRUE;
} while (0);
free (path);
return ret;
}
void
GetNet (int Maximum,
int data [4],
LoadGraph *g)
{
enum Types {
IN_COUNT = 0,
OUT_COUNT = 1,
LOCAL_COUNT = 2,
COUNT_TYPES = 3
};
static int ticks = 0;
static gulong past[COUNT_TYPES] = {0};
static AutoScaler scaler;
gulong present[COUNT_TYPES] = {0};
guint i;
gchar **devices;
glibtop_netlist netlist;
MultiloadApplet *multiload;
multiload = g->multiload;
if(ticks == 0)
{
autoscaler_init(&scaler, 60, 501);
}
devices = glibtop_get_netlist(&netlist);
for(i = 0; i < netlist.number; ++i)
{
glibtop_netload netload;
glibtop_get_netload(&netload, devices[i]);
g_return_if_fail((netload.flags & needed_netload_flags) == needed_netload_flags);
if (!(netload.if_flags & (1L << GLIBTOP_IF_FLAGS_UP)))
continue;
if (netload.if_flags & (1L << GLIBTOP_IF_FLAGS_LOOPBACK)) {
/* for loopback in and out are identical, so only count in */
present[LOCAL_COUNT] += netload.bytes_in;
continue;
}
/*
* Do not include virtual devices (VPN, PPPOE...) to avoid
* counting the same throughput several times.
*/
if (is_net_device_virtual(devices[i]))
continue;
present[IN_COUNT] += netload.bytes_in;
present[OUT_COUNT] += netload.bytes_out;
}
g_strfreev(devices);
netspeed_add (multiload->netspeed_in, present[IN_COUNT]);
netspeed_add (multiload->netspeed_out, present[OUT_COUNT]);
if(ticks < 2) /* avoid initial spike */
{
ticks++;
memset(data, 0, COUNT_TYPES * sizeof data[0]);
}
else
{
int delta[COUNT_TYPES];
for (i = 0; i < COUNT_TYPES; i++)
{
/* protect against weirdness */
if (present[i] >= past[i])
delta[i] = (present[i] - past[i]);
else
delta[i] = 0;
}
for (i = 0; i < COUNT_TYPES; i++)
data[i] = delta[i];
}
memcpy(past, present, sizeof past);
}
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