author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 13 Oct 2010 16:27:53 +0300 | |
branch | RCL_3 |
changeset 75 | 254b651f304e |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// Name : nice.cpp |
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// Part of : LIBC |
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// Contains the source for fchdir |
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// Version : 1.0 |
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// |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#include <errno.h> |
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#include <e32std.h> |
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#include <e32const.h> |
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#include <unistd.h> |
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extern "C" { |
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/* |
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The function nice() increases or decreases the priority value by |
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adding the value 'incr' to the current priority. |
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It internally uses getpriority and setpriority to set the priority |
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to new value. |
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It returns the new value of the priority, which shall be in the range |
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of -15 to 19. -1 is a legitimate return value, so the user has to check |
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the errno to be sure of failure. |
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*/ |
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EXPORT_C int nice(int incr) |
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{ |
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int retGetPri = -1; |
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int retSetPri = -1; |
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int retVal = -1; |
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if(((retGetPri = getpriority(PRIO_PROCESS, 0)) == -1) && (errno)) |
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{ |
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errno = ENOSYS; |
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} |
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else |
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{ |
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retSetPri = setpriority(PRIO_PROCESS, 0, retGetPri + incr); |
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if(!retSetPri) |
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{ |
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retVal = 0; |
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} |
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} |
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return retVal; |
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} |
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} //extern "C" |