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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <glibtop/error.h>
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#include <glibtop/mem.h>
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#include "glibtop_private.h"
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static const unsigned long _glibtop_sysdeps_mem =
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(1L << GLIBTOP_MEM_TOTAL) + (1L << GLIBTOP_MEM_USED) +
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(1L << GLIBTOP_MEM_FREE) + (1L << GLIBTOP_MEM_SHARED) +
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(1L << GLIBTOP_MEM_BUFFER) + (1L << GLIBTOP_MEM_CACHED) +
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(1L << GLIBTOP_MEM_USER);
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/* Init function. */
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void
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_glibtop_init_mem_s (glibtop *server)
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{
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server->sysdeps.mem = _glibtop_sysdeps_mem;
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}
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/* Provides information about memory usage. */
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#define FILENAME "/proc/meminfo"
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void
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glibtop_get_mem_s (glibtop *server, glibtop_mem *buf)
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{
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char buffer [BUFSIZ];
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memset(buf, 0, sizeof *buf);
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file_to_buffer(server, buffer, sizeof buffer, FILENAME);
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/* try to match procps's `free` */
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buf->total = get_scaled(buffer, "MemTotal:");
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buf->free = get_scaled(buffer, "MemFree:");
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buf->used = buf->total - buf->free;
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buf->shared = get_scaled(buffer, "Shmem:");
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buf->buffer = get_scaled(buffer, "Buffers:");
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buf->cached = get_scaled(buffer, "Cached:") + get_scaled(buffer, "Slab:");
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if (server->os_version_code >= LINUX_VERSION_CODE(3, 14, 0)) {
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buf->user = buf->total - get_scaled(buffer, "MemAvailable:");
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}
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else {
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buf->user = buf->total - buf->free - buf->cached - buf->buffer;
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}
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buf->flags = _glibtop_sysdeps_mem;
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}
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