system-posix.cpp revision 19b33b266340b2f4aedecb982edb9957d4ee1afa
/* $Id$ */
/** @file
* IPRT - System, POSIX.
*/
/*
* Copyright (C) 2006-2007 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#include <unistd.h>
#include <stdio.h>
#if !defined(RT_OS_SOLARIS)
#endif
/**
* Gets the number of logical (not physical) processors in the system.
*
* @returns Number of logical processors in the system.
*/
RTR3DECL(unsigned) RTSystemProcessorGetCount(void)
{
/*
* The sysconf way (linux and others).
*/
#ifdef _SC_NPROCESSORS_ONLN
if (cCpus >= 1)
return cCpus;
#endif
/*
* The BSD 4.4 way.
*/
int aiMib[2];
cCpus = -1;
return cCpus;
#endif
return 1;
}
/**
* Gets the active logical processor mask.
*
* @returns Active logical processor mask. (bit 0 == logical cpu 0)
*/
{
int cCpus = RTSystemProcessorGetCount();
}
/**
* Gets the current figures of overall system processor usage.
*
* @remarks To get meaningful stats this function has to be
* called twice with a bit of delay between calls. This
* is due to the fact that at least two samples of
* system usage stats are needed to calculate the load.
*
* @returns None.
*/
{
int rc = VINF_SUCCESS;
if (f)
{
{
/* Update the base. */
}
else
fclose(f);
}
else
return rc;
}
/**
* Gets the current processor usage for a partucilar process.
*
* @remarks To get meaningful stats this function has to be
* called twice with a bit of delay between calls. This
* is due to the fact that at least two samples of
* system usage stats are needed to calculate the load.
*
* @returns None.
*/
{
int rc = VINF_SUCCESS;
if (f)
{
{
char *pszName;
char c;
int iTmp;
unsigned uTmp;
fclose(f);
//printf("Opening %s...\n", pszName);
if (f)
{
if (fscanf(f, "%d %s %c %d %d %d %d %d %u %lu %lu %lu %lu %lu %lu",
{
// printf("%d: user=%u%% system=%u%% / raw user=%u raw system=%u total delta=%u\n", pid,
// pStats->u32User / 10000000, pStats->u32System / 10000000,
// pStats->u32RawProcUser, pStats->u32RawProcSystem, u64TotalDelta);
/* Update the base. */
// printf("%d: updated raw user=%u raw system=%u raw total=%u\n", pid,
// pStats->u32RawProcUser, pStats->u32RawProcSystem, pStats->u64RawTotal);
}
else
}
else
}
else
fclose(f);
}
else
return rc;
}