procsegment.c

来自「linux 操作系统下对系统资源监控程序的编写」· C语言 代码 · 共 78 行

/* $Id: procsegment.c,v 1.21 2003/10/19 16:55:35 carlos Exp $ */

/* Copyright (C) 1998-99 Martin Baulig
   This file is part of LibGTop 1.0.

   Contributed by Martin Baulig <[e-mail]>, April 1998.

   LibGTop is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License,
   or (at your option) any later version.

   LibGTop is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   for more details.

   You should have received a copy of the GNU General Public License
   along with LibGTop; see the file COPYING. If not, write to the
   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#include <config.h>
#include <glibtop/error.h>
#include <glibtop/procsegment.h>

#include "kernel.h"

static const unsigned long _glibtop_sysdeps_proc_segment =
(1 << GLIBTOP_PROC_SEGMENT_TEXT_RSS) +
(1 << GLIBTOP_PROC_SEGMENT_SHLIB_RSS) +
(1 << GLIBTOP_PROC_SEGMENT_DATA_RSS) +
(1 << GLIBTOP_PROC_SEGMENT_STACK_RSS) +
(1 << GLIBTOP_PROC_SEGMENT_DIRTY_SIZE) +
(1 << GLIBTOP_PROC_SEGMENT_START_CODE) +
(1 << GLIBTOP_PROC_SEGMENT_END_CODE) +
(1 << GLIBTOP_PROC_SEGMENT_START_STACK);

/* Init function. */

void
glibtop_init_proc_segment_s (glibtop *server)
{
	server->sysdeps.proc_segment = _glibtop_sysdeps_proc_segment;
}

/* Provides detailed information about a process. */

void
glibtop_get_proc_segment_s (glibtop *server, glibtop_proc_segment *buf,
			    pid_t pid)
{
	union table tbl;

	glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_SEGMENT, 0);

	memset (buf, 0, sizeof (glibtop_proc_segment));

	if (table (TABLE_PROC_MEM, &tbl, &pid))
		glibtop_error_io_r (server, "table(TABLE_PROC_MEM)");
	
	buf->start_code = tbl.proc_mem.start_code;
	buf->end_code = tbl.proc_mem.end_code;
	buf->start_stack = tbl.proc_mem.start_stack;

	if (table (TABLE_PROC_SEGMENT, &tbl, &pid))
		glibtop_error_io_r (server, "table(TABLE_PROC_SEGMENT)");

	buf->flags = _glibtop_sysdeps_proc_segment;

	buf->text_rss	= tbl.proc_segment.trs;
	buf->shlib_rss	= tbl.proc_segment.lrs;
	buf->data_rss	= tbl.proc_segment.drs;
	buf->stack_rss	= tbl.proc_segment.srs;
	buf->dirty_size	= tbl.proc_segment.dt;
}