143 lines
2.7 KiB
C
143 lines
2.7 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <stdio.h>
|
|
|
|
#include "../util.h"
|
|
|
|
#if defined(__linux__)
|
|
const char *
|
|
ram_free(void)
|
|
{
|
|
long free;
|
|
|
|
if (pscanf("/proc/meminfo",
|
|
"MemTotal: %ld kB\n"
|
|
"MemFree: %ld kB\n"
|
|
"MemAvailable: %ld kB\n",
|
|
&free, &free, &free) != 3) {
|
|
return NULL;
|
|
}
|
|
|
|
return fmt_human_2(free * 1024, "B");
|
|
}
|
|
|
|
const char *
|
|
ram_perc(void)
|
|
{
|
|
long total, free, buffers, cached;
|
|
|
|
if (pscanf("/proc/meminfo",
|
|
"MemTotal: %ld kB\n"
|
|
"MemFree: %ld kB\n"
|
|
"MemAvailable: %ld kB\nBuffers: %ld kB\n"
|
|
"Cached: %ld kB\n",
|
|
&total, &free, &buffers, &buffers, &cached) != 5) {
|
|
return NULL;
|
|
}
|
|
|
|
return bprintf("%d%%", 100 * ((total - free) -
|
|
(buffers + cached)) / total);
|
|
}
|
|
|
|
const char *
|
|
ram_total(void)
|
|
{
|
|
long total;
|
|
|
|
if (pscanf("/proc/meminfo", "MemTotal: %ld kB\n",
|
|
&total) != 1) {
|
|
return NULL;
|
|
}
|
|
|
|
return fmt_human_2(total * 1024, "B");
|
|
}
|
|
|
|
const char *
|
|
ram_used(void)
|
|
{
|
|
long total, free, buffers, cached;
|
|
|
|
if (pscanf("/proc/meminfo",
|
|
"MemTotal: %ld kB\n"
|
|
"MemFree: %ld kB\n"
|
|
"MemAvailable: %ld kB\nBuffers: %ld kB\n"
|
|
"Cached: %ld kB\n",
|
|
&total, &free, &buffers, &buffers, &cached) != 5) {
|
|
return NULL;
|
|
}
|
|
|
|
return fmt_human_2((total - free - buffers - cached) * 1024,
|
|
"B");
|
|
}
|
|
#elif defined(__OpenBSD__)
|
|
#include <stdlib.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
#define LOG1024 10
|
|
#define pagetok(size, pageshift) ((size) << (pageshift - LOG1024))
|
|
|
|
inline int
|
|
load_uvmexp(struct uvmexp *uvmexp)
|
|
{
|
|
int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
|
|
size_t size;
|
|
|
|
size = sizeof(*uvmexp);
|
|
|
|
return sysctl(uvmexp_mib, 2, uvmexp, &size, NULL, 0) >= 0 ? 1 : 0;
|
|
}
|
|
|
|
const char *
|
|
ram_free(void)
|
|
{
|
|
struct uvmexp uvmexp;
|
|
int free_pages;
|
|
|
|
if (load_uvmexp(&uvmexp)) {
|
|
free_pages = uvmexp.npages - uvmexp.active;
|
|
return fmt_human_2(pagetok(free_pages, uvmexp.pageshift) * 1024, "B");
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char *
|
|
ram_perc(void)
|
|
{
|
|
struct uvmexp uvmexp;
|
|
int percent;
|
|
|
|
if (load_uvmexp(&uvmexp)) {
|
|
percent = uvmexp.active * 100 / uvmexp.npages;
|
|
return bprintf("%d%%", percent);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char *
|
|
ram_total(void)
|
|
{
|
|
struct uvmexp uvmexp;
|
|
|
|
if (load_uvmexp(&uvmexp)) {
|
|
return fmt_human_2(pagetok(uvmexp.npages, uvmexp.pageshift) * 1024, "B");
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
const char *
|
|
ram_used(void)
|
|
{
|
|
struct uvmexp uvmexp;
|
|
|
|
if (load_uvmexp(&uvmexp)) {
|
|
return fmt_human_2(pagetok(uvmexp.active, uvmexp.pageshift) * 1024, "B");
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
#endif
|