author | Dario Sestito <darios@symbian.org> |
Fri, 17 Sep 2010 17:50:17 +0100 | |
branch | RCL_3 |
changeset 73 | 461e71b327da |
parent 19 | 04becd199f91 |
permissions | -rw-r--r-- |
19
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/* |
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* Copyright (c) 2002-2007 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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* |
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*/ |
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|
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|
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package com.nokia.mj.impl.rt.legacy; |
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|
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import java.io.IOException; |
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|
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/** |
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* A utility class for declaring and handling native SymbianOS error codes. |
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* All error codes that are used in Java from native code should be |
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* declared here and referenced from this class. Also if a new error code |
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* is added, it should be added to the list of compile-time asserts in |
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* NativeError.cpp. |
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*/ |
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public final class NativeError |
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{ |
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public static final String NATIVE_ERROR_MESSAGE = "SymbianOS error = "; |
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private static final int BUFFER_SIZE = 256; |
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|
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// SymbianOS error codes |
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public static final int KErrNone = 0; |
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public static final int KErrNotFound = -1; |
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public static final int KErrGeneral = -2; |
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public static final int KErrCancel = -3; |
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public static final int KErrNoMemory = -4; |
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public static final int KErrNotSupported = -5; |
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public static final int KErrArgument = -6; |
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public static final int KErrOverflow = -9; |
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public static final int KErrAlreadyExists = -11; |
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public static final int KErrPathNotFound = -12; |
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public static final int KErrDied = -13; |
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public static final int KErrNotReady = -18; |
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public static final int KErrCorrupt = -20; |
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public static final int KErrAccessDenied = -21; |
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public static final int KErrWrite = -23; |
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public static final int KErrEof = -25; |
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public static final int KErrDiskFull = -26; |
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public static final int KErrBadName = -28; |
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public static final int KErrCommsLineFail = -29; |
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public static final int KErrTimedOut = -33; |
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public static final int KErrDisconnected = -36; |
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public static final int KErrTooBig = -40; |
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public static final int KErrDivideByZero = -41; |
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public static final int KErrHardwareNotAvailable = -44; |
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|
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|
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// Not intended to be constructed |
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private NativeError() |
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{ |
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} |
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|
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|
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|
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/** |
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* Checks for basic native error codes that map to standard Java |
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* exceptions and throws the exception if the error code matches. |
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* Otherwise just returns the error. |
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* |
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* @param aError Possible error code. |
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* @return Value passed in is returned if not an error. |
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* @throws OutOfMemoryError If aError equals KErrNoMemory. |
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* @throws IllegalArgumentException If aError equals KErrArgument |
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* @throws ArithmeticException If aError equals KErrDivideByZero |
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*/ |
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public static int checkExplicitOnly(int aError) |
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{ |
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if (aError < KErrNone) |
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{ |
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switch (aError) |
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{ |
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case KErrNoMemory: |
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throw new OutOfMemoryError(); |
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// KErrArgument must throw IllegalArgumentException |
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// otherwise lcdui will break, so don't change this. |
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case KErrArgument: |
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throw new IllegalArgumentException(); |
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case KErrDivideByZero: |
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throw new ArithmeticException(); |
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default: |
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// Do nothing |
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} |
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} |
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return aError; |
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} |
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100 |
|
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|
101 |
|
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Revision: v2.1.22
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|
102 |
|
04becd199f91
Revision: v2.1.22
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|
103 |
/** |
04becd199f91
Revision: v2.1.22
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|
104 |
* Checks for basic native error codes that map to standard Java |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
105 |
* exceptions and throws the exception if the error code matches. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
106 |
* Otherwise throws basic Error class. |
04becd199f91
Revision: v2.1.22
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|
107 |
* |
04becd199f91
Revision: v2.1.22
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|
108 |
* @param aError Possible error code. |
04becd199f91
Revision: v2.1.22
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|
109 |
* @param aThrowAlways Determines whether a default exception is thrown |
04becd199f91
Revision: v2.1.22
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|
110 |
* if the error code is not recognised. |
04becd199f91
Revision: v2.1.22
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diff
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|
111 |
* @return Value passed in is returned if not an error. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
112 |
* @throws Error If the error code does not match any exception thrown |
04becd199f91
Revision: v2.1.22
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|
113 |
* in checkExplicitOnly, a default exception is thrown here. |
04becd199f91
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|
114 |
*/ |
04becd199f91
Revision: v2.1.22
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|
115 |
public static int check(int aError) |
04becd199f91
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|
116 |
{ |
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|
117 |
if (aError < KErrNone) |
04becd199f91
Revision: v2.1.22
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|
118 |
{ |
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|
119 |
checkExplicitOnly(aError); |
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|
120 |
throw new Error(errorMessage(aError)); |
04becd199f91
Revision: v2.1.22
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|
121 |
} |
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|
122 |
return aError; |
04becd199f91
Revision: v2.1.22
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|
123 |
} |
04becd199f91
Revision: v2.1.22
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|
124 |
|
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Revision: v2.1.22
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|
125 |
|
04becd199f91
Revision: v2.1.22
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|
126 |
|
04becd199f91
Revision: v2.1.22
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|
127 |
/** |
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Revision: v2.1.22
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|
128 |
* Version of check that uses a long rather than an int. |
04becd199f91
Revision: v2.1.22
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|
129 |
*/ |
04becd199f91
Revision: v2.1.22
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|
130 |
public static long check(long aError) |
04becd199f91
Revision: v2.1.22
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|
131 |
{ |
04becd199f91
Revision: v2.1.22
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|
132 |
check((int)aError); |
04becd199f91
Revision: v2.1.22
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|
133 |
return aError; |
04becd199f91
Revision: v2.1.22
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|
134 |
} |
04becd199f91
Revision: v2.1.22
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|
135 |
|
04becd199f91
Revision: v2.1.22
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|
136 |
|
04becd199f91
Revision: v2.1.22
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|
137 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
138 |
/** |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
139 |
* Checks for basic native error codes that map to standard Java |
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
140 |
* exceptions and throws the exception if the error code matches. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
141 |
* Otherwise throws an IOException. |
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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|
142 |
* |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
143 |
* @param aError Possible error code. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
144 |
* @return Value passed in is returned if not an error. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
145 |
*/ |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
146 |
public static int checkIO(int aError) |
04becd199f91
Revision: v2.1.22
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|
147 |
throws IOException |
04becd199f91
Revision: v2.1.22
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|
148 |
{ |
04becd199f91
Revision: v2.1.22
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|
149 |
if (aError < KErrNone) |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
150 |
{ |
04becd199f91
Revision: v2.1.22
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|
151 |
checkExplicitOnly(aError); |
04becd199f91
Revision: v2.1.22
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|
152 |
throw new IOException(errorMessage(aError)); |
04becd199f91
Revision: v2.1.22
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|
153 |
} |
04becd199f91
Revision: v2.1.22
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|
154 |
return aError; |
04becd199f91
Revision: v2.1.22
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parents:
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|
155 |
} |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
156 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
157 |
|
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
158 |
|
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
159 |
/** |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
160 |
* Checks if the error code represents out of memory, and throws Java Error |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
161 |
* if true. Otherwise throws basic Error class. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
162 |
* |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
163 |
* @param aError Possible error code. |
04becd199f91
Revision: v2.1.22
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parents:
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|
164 |
* @return Value passed in is returned if not an error. |
04becd199f91
Revision: v2.1.22
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parents:
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|
165 |
*/ |
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
166 |
public static int checkOOM(int aError) |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
167 |
{ |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
168 |
if (aError < KErrNone) |
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
169 |
{ |
04becd199f91
Revision: v2.1.22
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|
170 |
if (aError == KErrNoMemory) |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
171 |
{ |
04becd199f91
Revision: v2.1.22
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parents:
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|
172 |
throw new OutOfMemoryError(); |
04becd199f91
Revision: v2.1.22
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parents:
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|
173 |
} |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
174 |
throw new Error(errorMessage(aError)); |
04becd199f91
Revision: v2.1.22
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parents:
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|
175 |
} |
04becd199f91
Revision: v2.1.22
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|
176 |
return aError; |
04becd199f91
Revision: v2.1.22
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parents:
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|
177 |
} |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
178 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
179 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
180 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
181 |
/** |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
182 |
* Checks if the object is a null reference, and throws OutOfMemoryError |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
183 |
* if this is the case. Useful for checking for OOM when Java objects |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
184 |
* returned from a native method. |
04becd199f91
Revision: v2.1.22
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parents:
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|
185 |
* |
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Revision: v2.1.22
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diff
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|
186 |
* @param aObject Object that may be null. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
187 |
* @return Value passed in is returned if not an error. |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
188 |
*/ |
04becd199f91
Revision: v2.1.22
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parents:
diff
changeset
|
189 |
public static Object checkOOM(Object aObject) |
04becd199f91
Revision: v2.1.22
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parents:
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|
190 |
{ |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
191 |
if (aObject == null) |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
192 |
{ |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
193 |
throw new OutOfMemoryError(); |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
194 |
} |
04becd199f91
Revision: v2.1.22
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parents:
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|
195 |
return aObject; |
04becd199f91
Revision: v2.1.22
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|
196 |
} |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
197 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
198 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
changeset
|
199 |
|
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
200 |
/** |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
201 |
* Checks if the error code represents out of memory, and throws Java Error |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
202 |
* if true. Does not throw anything otherwise. |
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
203 |
* |
04becd199f91
Revision: v2.1.22
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parents:
diff
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|
204 |
* @param aError Possible error code. |
04becd199f91
Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
205 |
* @return Value passed in is returned if not an out of memory error. |
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*/ |
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public static int checkOOMOnly(int aError) |
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{ |
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if (aError == KErrNoMemory) |
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{ |
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throw new OutOfMemoryError(); |
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} |
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return aError; |
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} |
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|
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/** |
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* Returns a string formatted with generic text to indicate where the error |
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* code comes from and the error code given. |
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* |
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* @param A native error code. |
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* @return A string containing the error code and explanatory text. |
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*/ |
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public static String errorMessage(int aError) |
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{ |
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final String message = _getNativeErrorMessage(aError); |
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String result = NATIVE_ERROR_MESSAGE.concat(Integer.toString(aError)); |
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if (message != null && message.length() > 0) |
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result = result.concat(" : ").concat(message); |
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return result; |
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} |
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|
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/** |
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* Returns a string formatted with generic text to indicate where the error |
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* code comes from and the error code given. |
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* |
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* @param A native error code. |
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* @param An extra text message for more information. |
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* @return A string containing the error code and explanatory text. |
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*/ |
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public static String errorMessage(int aError, String aExtraText) |
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{ |
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final StringBuffer messageBuf = new StringBuffer(BUFFER_SIZE); // use native max as base |
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messageBuf.append(aExtraText); |
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messageBuf.append(", "); |
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messageBuf.append(errorMessage(aError)); |
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return messageBuf.toString(); |
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} |
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private static native String _getNativeErrorMessage(int aError); |
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} |
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