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