Blame sysdeps/freebsd/mem.c

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/* Copyright (C) 1998 Joshua Sled
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   This file is part of LibGTop 1.0.
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   Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 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.h>
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#include <glibtop/error.h>
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#include <glibtop/mem.h>
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#include <sys/types.h>
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#include <sys/sysctl.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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/* these are for getting the memory statistics */
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static int pagesize;
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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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	pagesize = getpagesize ();
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	server->sysdeps.mem = _glibtop_sysdeps_mem;
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}
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static gulong mem_get_by_bytes (glibtop *server, const char *name) {
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	gulong result = 0;
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	size_t len = sizeof (result);
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	if (sysctlbyname (name, &result, &len, NULL, 0)) {
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		glibtop_warn_io_r (server, "sysctl (%s)", name);
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	}
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	return result;
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}
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static gulong mem_get_by_pages (glibtop *server, const char *name) {
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	guint result = 0;
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	size_t len = sizeof (result);
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	if (sysctlbyname (name, &result, &len, NULL, 0)) {
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		glibtop_warn_io_r (server, "sysctl (%s)", name);
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	}
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	return (gulong) result * pagesize;
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}
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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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	gulong memtotal;
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	gulong memactive;
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	gulong meminactive;
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	gulong memwired;
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	gulong memcached;
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	gulong membuffer;
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	gulong memfree;
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	memset (buf, 0, sizeof *buf);
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	memtotal = mem_get_by_bytes (server, "hw.physmem");
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	memactive = mem_get_by_pages (server, "vm.stats.vm.v_active_count");
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	meminactive = mem_get_by_pages (server, "vm.stats.vm.v_inactive_count");
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	memwired = mem_get_by_pages (server, "vm.stats.vm.v_wire_count");
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	memcached = mem_get_by_pages (server, "vm.stats.vm.v_cache_count");
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	membuffer = mem_get_by_bytes (server, "vfs.bufspace");
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	memfree = mem_get_by_pages (server, "vm.stats.vm.v_free_count");
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	buf->total = memtotal;
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	buf->used = memtotal - memfree;
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	buf->free = memfree;
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	buf->shared = 0;
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	buf->buffer = membuffer;
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	buf->cached = memcached;
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	buf->locked = 0;
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	buf->user = memactive + memwired;
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	buf->flags = _glibtop_sysdeps_mem;
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}