- /* 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(free * 1024, 1024);
- }
-
- 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(total * 1024, 1024);
- }
-
- 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((total - free - buffers - cached) * 1024,
- 1024);
- }
- #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_t)(size << (pageshift - LOG1024))
-
- inline int
- load_uvmexp(struct uvmexp *uvmexp)
- {
- int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
- size_t size;
-
- size = sizeof(*uvmexp);
-
- if (sysctl(uvmexp_mib, 2, uvmexp, &size, NULL, 0) >= 0) {
- return 1;
- }
-
- return 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(pagetok(free_pages, uvmexp.pageshift) *
- 1024, 1024);
- }
-
- 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(pagetok(uvmexp.npages,
- uvmexp.pageshift) * 1024,
- 1024);
- }
-
- return NULL;
- }
-
- const char *
- ram_used(void)
- {
- struct uvmexp uvmexp;
-
- if (load_uvmexp(&uvmexp)) {
- return fmt_human(pagetok(uvmexp.active,
- uvmexp.pageshift) * 1024,
- 1024);
- }
-
- return NULL;
- }
- #endif
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