1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/openenvcore/libc/src/nice.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,62 @@
     1.4 +// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +// Name        : nice.cpp
    1.18 +// Part of     : LIBC
    1.19 +// Contains the source for fchdir
    1.20 +// Version     : 1.0
    1.21 +//
    1.22 +
    1.23 +
    1.24 +
    1.25 +#include <sys/time.h>
    1.26 +#include <sys/resource.h>
    1.27 +#include <errno.h>
    1.28 +#include <e32std.h>
    1.29 +#include <e32const.h>
    1.30 +#include <unistd.h>
    1.31 +
    1.32 +extern "C" {
    1.33 +
    1.34 +/*
    1.35 +The function nice() increases or decreases the priority value by
    1.36 +adding the value 'incr' to the current priority.
    1.37 +It internally uses getpriority and setpriority to set the priority 
    1.38 +to new value.
    1.39 +It returns the new value of the priority, which shall be in the range 
    1.40 +of -15 to 19. -1 is a legitimate return value, so the user has to check 
    1.41 +the errno to be sure of failure.
    1.42 +*/
    1.43 +EXPORT_C int nice(int incr)
    1.44 +	{
    1.45 +	
    1.46 +	int retGetPri = -1;
    1.47 +	int retSetPri = -1;
    1.48 +	int retVal 	  = -1;
    1.49 +	
    1.50 +	if(((retGetPri = getpriority(PRIO_PROCESS, 0)) == -1) && (errno))
    1.51 +		{
    1.52 +		errno = ENOSYS;
    1.53 +		}
    1.54 +	else
    1.55 +		{
    1.56 +		retSetPri = setpriority(PRIO_PROCESS, 0, retGetPri + incr);
    1.57 +		if(!retSetPri)
    1.58 +			{
    1.59 +			retVal = 0;
    1.60 +			}
    1.61 +		}
    1.62 +	return retVal;
    1.63 +	}
    1.64 +
    1.65 +} //extern "C"