46c4540dd2
These functions take the raw number and a unit and automatically print it out "scaled down" to a proper SI-prefix, for powers of 2 and 10 respectively. Apply them to the 2-power cases and keep the 10-power for a later commit.
129 lines
2.7 KiB
C
129 lines
2.7 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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const char *
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ram_free(void)
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{
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long free;
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return (pscanf("/proc/meminfo",
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"MemTotal: %ld kB\n"
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"MemFree: %ld kB\n"
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"MemAvailable: %ld kB\n",
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&free, &free, &free) == 3) ?
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fmt_human_2(free * 1024, "B") : 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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long total, free, buffers, cached;
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return (pscanf("/proc/meminfo",
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"MemTotal: %ld kB\n"
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"MemFree: %ld kB\n"
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"MemAvailable: %ld kB\nBuffers: %ld kB\n"
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"Cached: %ld kB\n",
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&total, &free, &buffers, &buffers, &cached) == 5) ?
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bprintf("%d%%", 100 * ((total - free) - (buffers + cached)) /
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total) :
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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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long total;
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return (pscanf("/proc/meminfo", "MemTotal: %ld kB\n", &total) == 1) ?
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fmt_human_2(total * 1024, "B") : 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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long total, free, buffers, cached;
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return (pscanf("/proc/meminfo",
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"MemTotal: %ld kB\n"
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"MemFree: %ld kB\n"
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"MemAvailable: %ld kB\nBuffers: %ld kB\n"
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"Cached: %ld kB\n",
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&total, &free, &buffers, &buffers, &cached) == 5) ?
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fmt_human_2((total - free - buffers - cached) * 1024, "B") : NULL;
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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) << (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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return sysctl(uvmexp_mib, 2, uvmexp, &size, NULL, 0) >= 0 ? 1 : 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_2(pagetok(free_pages, uvmexp.pageshift) * 1024, "B");
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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_2(pagetok(uvmexp.npages, uvmexp.pageshift) * 1024, "B");
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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_2(pagetok(uvmexp.active, uvmexp.pageshift) * 1024, "B");
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}
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return NULL;
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}
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#endif
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