procmem.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 65 行

/* $Id: procmem.c,v 1.11 2003/10/19 16:55:46 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 <glibtop.h>
#include <glibtop/procmem.h>

static const unsigned long _glibtop_sysdeps_proc_mem =
(1L << GLIBTOP_PROC_MEM_SIZE) + (1L << GLIBTOP_PROC_MEM_VSIZE) +
(1L << GLIBTOP_PROC_MEM_RESIDENT) + (1L << GLIBTOP_PROC_MEM_RSS);

/* Init function. */

void
glibtop_init_proc_mem_s (glibtop *server)
{
	server->sysdeps.proc_mem = _glibtop_sysdeps_proc_mem;
}

/* Provides detailed information about a process. */

void
glibtop_get_proc_mem_s (glibtop *server, glibtop_proc_mem *buf, pid_t pid)
{
#ifdef HAVE_PROCFS_H
   	struct psinfo psinfo;
#else
	struct prpsinfo psinfo;
	int pagesize = server->machine.pagesize;
#endif

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

	if(glibtop_get_proc_data_psinfo_s(server, &psinfo, pid))
	   	return;

#ifdef HAVE_PROCFS_H
	buf->size = buf->vsize = psinfo.pr_size << 10;
	buf->resident = buf->rss = psinfo.pr_rssize << 10;
#else
	buf->size = buf->vsize = psinfo.pr_size << pagesize << 10;
	buf->resident = buf->rss = psinfo.pr_rssize << pagesize << 10;
#endif
	buf->flags = _glibtop_sysdeps_proc_mem;
}