author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 16:34:26 +0300 | |
branch | RCL_3 |
changeset 256 | c1f20ce4abcf |
child 271 | dc268b18d709 |
permissions | -rw-r--r-- |
256
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// Copyright (c) 2003-2009 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 the License "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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// e32test\system\t_atomicu.cpp |
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// Overview: |
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// Simple test for class User atomic operations |
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// API Information: |
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// User::SafeInc(), User::SafeDec(), User::LockedInc(), |
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// User::LockedDec() |
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// Details: |
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// - Tests SafeInc, SafeDec, LockedInc and LockedDec |
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// functions in single thread and determines that counts |
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// match after finished |
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// - Tests SafeInc, SafeDec, LockedInc and LockedDec |
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// functions in multithreaded configuration and determines |
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// that counts match after finished |
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// Platforms/Drives/Compatibility: |
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// All. |
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// Assumptions/Requirement/Pre-requisites: |
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// Failures and causes: |
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// Base Port information: |
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// |
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// |
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|
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#define __E32TEST_EXTENSION__ |
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#include <e32test.h> |
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#include <e32svr.h> |
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#include <e32def.h> |
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|
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LOCAL_D RTest test(_L("T_ATOMICU")); |
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const TInt KMaxOps=20000; |
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#define KNumThreads 20 |
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TInt gValue=0; |
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|
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void TestSafeIncAndSafeDec() |
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{ |
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gValue=0; |
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// increasing when 0, should return 0 |
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test(User::SafeInc(gValue)==0); |
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// value also should be 0 |
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test(gValue==0); |
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gValue=1; |
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TInt expected=0; |
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// gValue should vary only between 1 and 2 |
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for (TInt i=0; i<KMaxOps; i++) |
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{ |
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expected=User::SafeInc(gValue)+1; |
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test(expected==User::SafeDec(gValue)); |
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} |
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// after running these, it should be 1 |
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test(gValue==1); |
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|
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// should stay zero after decreasing from 1 multiple times |
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test(User::SafeDec(gValue)==1); |
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test(User::SafeDec(gValue)==0); |
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test(User::SafeDec(gValue)==0); |
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test(gValue==0); |
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} |
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void TestLockedIncAndLockedDec() |
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{ |
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gValue=0; |
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// increasing when 0, should return 0 as old value |
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test(User::LockedInc(gValue)==0); |
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// new value should be 1 |
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test(gValue==1); |
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gValue=-1; |
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|
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// gValue should vary only between 1 and 2 |
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for (TInt i=0; i<KMaxOps; i++) |
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{ |
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test((User::LockedInc(gValue)+1)==User::LockedDec(gValue)); |
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} |
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|
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// after running these, it should be back in -1 |
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test(gValue==-1); |
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} |
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|
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TInt MultiThreadSafeIncAndSafeDec_FUNC(TAny*) |
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{ |
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for (TInt i=0; i<KMaxOps; i++) |
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{ |
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User::SafeInc(gValue); |
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User::SafeDec(gValue); |
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} |
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return KErrNone; |
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} |
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|
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TInt MultiThreadLockedIncAndLockedDec_FUNC(TAny*) |
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|
104 |
{ |
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|
105 |
for (TInt i=0; i<KMaxOps; i++) |
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|
106 |
{ |
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|
107 |
User::LockedInc(gValue); |
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User::LockedDec(gValue); |
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|
109 |
} |
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return KErrNone; |
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111 |
} |
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|
112 |
|
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113 |
void MultiThreadSafeIncAndSafeDec() |
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114 |
{ |
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gValue=1; // start value 1 |
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RThread threads[KNumThreads]; |
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TRequestStatus stats[KNumThreads]; |
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118 |
TInt i; |
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119 |
|
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for (i=0;i<KNumThreads;i++) |
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121 |
{ |
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122 |
test_KErrNone(threads[i].Create(KNullDesC,MultiThreadSafeIncAndSafeDec_FUNC,KDefaultStackSize,NULL,NULL)); |
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threads[i].Logon(stats[i]); |
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124 |
} |
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125 |
|
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126 |
//lets increase our priority first, so that all the threads start |
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RThread().SetPriority(EPriorityMore); |
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128 |
|
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test.Printf(_L("Resuming threads...\n")); |
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for(i=0; i<KNumThreads; i++) |
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threads[i].Resume(); |
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132 |
|
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133 |
for(i=0; i<KNumThreads; i++) |
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134 |
{ |
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135 |
User::WaitForRequest(stats[i]); |
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test_KErrNone(stats[i].Int()); |
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CLOSE_AND_WAIT(threads[i]); |
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138 |
} |
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|
139 |
|
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test.Printf(_L("...Threads finished\n")); |
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|
141 |
|
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142 |
// back to normal |
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143 |
RThread().SetPriority(EPriorityNormal); |
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|
144 |
|
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// test that we returned to the startvalue |
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146 |
test(gValue==1); |
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147 |
} |
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|
148 |
|
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149 |
void MultiThreadLockedIncAndLockedDec() |
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150 |
{ |
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151 |
gValue=-1; // set start value to -1 |
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152 |
RThread threads[KNumThreads]; |
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TRequestStatus stats[KNumThreads]; |
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154 |
TInt i; |
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|
155 |
|
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156 |
for (i=0;i<KNumThreads;i++) |
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|
157 |
{ |
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158 |
test_KErrNone(threads[i].Create(KNullDesC,MultiThreadLockedIncAndLockedDec_FUNC,KDefaultStackSize,NULL,NULL)); |
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159 |
threads[i].Logon(stats[i]); |
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160 |
} |
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|
161 |
|
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|
162 |
//lets increase our priority first, so that all the threads start |
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163 |
RThread().SetPriority(EPriorityMore); |
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|
164 |
|
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|
165 |
test.Printf(_L("Resuming threads...\n")); |
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|
166 |
for(i=0; i<KNumThreads; i++) |
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|
167 |
threads[i].Resume(); |
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|
168 |
|
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|
169 |
for(i=0; i<KNumThreads; i++) |
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|
170 |
{ |
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Revision: 201035
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|
171 |
User::WaitForRequest(stats[i]); |
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|
172 |
test_KErrNone(stats[i].Int()); |
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173 |
CLOSE_AND_WAIT(threads[i]); |
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|
174 |
} |
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|
175 |
|
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|
176 |
test.Printf(_L("...Threads finished\n")); |
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|
177 |
|
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|
178 |
// back to normal |
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|
179 |
RThread().SetPriority(EPriorityNormal); |
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|
180 |
|
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|
181 |
// test that we returned to the startvalue |
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|
182 |
test(gValue==-1); |
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|
183 |
} |
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|
184 |
|
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|
185 |
|
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|
186 |
TInt E32Main() |
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|
187 |
{ |
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|
188 |
test.Title(); |
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|
189 |
|
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|
190 |
test.Start(_L("Test single thread User::SafeInc and User::SafeDec")); |
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|
191 |
TestSafeIncAndSafeDec(); |
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|
192 |
|
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|
193 |
test.Next(_L("Test single thread User::LockedInc and User::LockedDec")); |
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|
194 |
TestLockedIncAndLockedDec(); |
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|
195 |
|
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|
196 |
test.Next(_L("Test multiple thread User::SafeInc and User::SafeDec")); |
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|
197 |
MultiThreadSafeIncAndSafeDec(); |
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|
198 |
|
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|
199 |
test.Next(_L("Test multiple thread User::LockedInc and User::LockedDec")); |
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|
200 |
MultiThreadLockedIncAndLockedDec(); |
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|
201 |
|
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202 |
test.End(); |
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|
203 |
|
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|
204 |
return KErrNone; |
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|
205 |
} |