kerneltest/e32test/stack/t_stacksize.cpp
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     1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of the License "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 // e32test\stack\t_stacksize.cpp
       
    15 // Overview:
       
    16 // Verifies the correct implementation of CreateStackOverride method of RProcess.
       
    17 // Meanings of constants:
       
    18 // KDefaultStackSize: 
       
    19 // - System wide default stack size in actual version;
       
    20 // KNumberOfFitIteration: 
       
    21 // - Number of DummyRecursion which can fit in KDefaultStackSize. 
       
    22 // Value = KDefaultStackSize / 2KB - 1 
       
    23 // KNumberOfUnfitIteration: 
       
    24 // - Number of DummyRecursion which is raised a Panic based on stack overflow.
       
    25 // Value = KDefaultStackSize / 2KB rounded up to nearest integer
       
    26 // Details:
       
    27 // ETestProcess1: Create a process with original RProcess::Create() and start it
       
    28 // - it passes with KNumberOfFitIteration DummyRecursion .
       
    29 // ETestProcess2: Create a process with RProcess::CreateWithStackOverride(), default 
       
    30 // stack size and start it
       
    31 // - it passes with KNumberOfFitIteration DummyRecursion.
       
    32 // ETestProcess3: Create a process with original RProcess::Create() and start it
       
    33 // - it raised Panic on Stack overflow with KNumberOfUnfitIteration DummyRecursion.
       
    34 // ETestProcess4: Create a process with RProcess::CreateWithStackOverride(), default 
       
    35 // stack size and start it
       
    36 // - it raised Panic on Stack overflow with KNumberOfUnfitIteration DummyRecursion.
       
    37 // ETestProcess5: Create a process with RProcess::CreateWithStackOverride(), 2*KDefaultStackSize 
       
    38 // stack and start it
       
    39 // - it passes with KNumberOfUnfitIteration DummyRecursion.
       
    40 // ETestProcess6: Create a process with RProcess::CreateWithStackOverride(), -2*KDefaultStackSize 
       
    41 // stack.
       
    42 // - the process creation interrupted with KErrArgument error code
       
    43 // ETestProcess7: Create a process with RProcess::CreateWithStackOverride(), KDefaultStackSize/2 
       
    44 // stack and start it
       
    45 // - it passes with KNumberOfFitIteration DummyRecursion, because the process will be 
       
    46 // create with (App. image) default stack size.
       
    47 // Platforms/Drives/Compatibility:
       
    48 // It is won't work on emulator, because the unlimited stack size.
       
    49 // Assumptions/Requirement/Pre-requisites:
       
    50 // No
       
    51 // Failures and causes:
       
    52 // Failures of this test will indicate defects in the implementation of CreateWithStackOverride().
       
    53 // Base Port information:
       
    54 // No?
       
    55 // 
       
    56 //
       
    57 
       
    58 #include <e32test.h>
       
    59 #include "u32std.h"
       
    60 #include <u32hal.h>
       
    61 #include <e32svr.h>
       
    62 
       
    63 LOCAL_D RTest test(_L("T_STACKSIZE"));
       
    64 LOCAL_D RTest test2(_L("*** T_STACKSIZE SLAVE ***"));
       
    65 
       
    66 const TInt KNumberOfFitIteration = KDefaultStackSize / 2048 - 1;
       
    67 const TInt KNumberOfUnfitIteration = (KDefaultStackSize + 2047) / 2048;
       
    68 
       
    69 enum TTestProcessFunctions
       
    70 	{
       
    71 	ETestProcess1,
       
    72 	ETestProcess2,
       
    73 	ETestProcess3,
       
    74 	ETestProcess4,
       
    75 	ETestProcess5,
       
    76 	ETestProcess6,
       
    77 	ETestProcess7,
       
    78 	};
       
    79 
       
    80 class RTestProcess : public RProcess
       
    81 	{
       
    82 public:
       
    83 	TInt Create(TTestProcessFunctions aFunction, TInt aStackSize=0, TInt aArg1=-1,TInt aArg2=-1);
       
    84 	};
       
    85 
       
    86 TInt RTestProcess::Create(TTestProcessFunctions aFunction, TInt aStackSize, TInt aArg1,TInt aArg2)
       
    87 	{
       
    88 	
       
    89 	test.Printf(_L("RTestProcess::Create started with stack size:%d bytes\n") 
       
    90 								, (0 == aStackSize ? KDefaultStackSize : aStackSize )
       
    91 								);
       
    92 	if(aArg1==-1)
       
    93 		aArg1 = RProcess().Id();
       
    94 	TBuf<512> commandLine;
       
    95 	commandLine.Num((TInt)aFunction);
       
    96 	commandLine.Append(_L(" "));
       
    97 	commandLine.AppendNum(aArg1);
       
    98 	commandLine.Append(_L(" "));
       
    99 	commandLine.AppendNum(aArg2);
       
   100 
       
   101 	TFileName filename(RProcess().FileName());
       
   102 	TInt pos=filename.LocateReverse(TChar('\\'));
       
   103 	filename.SetLength(pos+1);
       
   104 	filename+=_L("T_STACKSIZE.EXE");
       
   105 	
       
   106 	TInt r=KErrNone;
       
   107 	switch (aFunction)
       
   108 		{
       
   109 		case ETestProcess1:
       
   110 			test.Printf(_L("Call original Create.\n"));
       
   111 			r = RProcess::Create(filename,commandLine); 
       
   112 			break;
       
   113 			
       
   114 		case ETestProcess2:
       
   115 			test.Printf(_L("Call CreateWithStackOverride\n"));	
       
   116 			r = RProcess::CreateWithStackOverride(filename, commandLine, TUidType(), aStackSize, EOwnerProcess);
       
   117 			break;
       
   118 			
       
   119 		case ETestProcess3:
       
   120 			test.Printf(_L("Call original Create.\n"));
       
   121 			r = RProcess::Create(filename,commandLine); 
       
   122 			break;
       
   123 			
       
   124 		case ETestProcess4:
       
   125 			test.Printf(_L("Call CreateWithStackOverride\n"));	
       
   126 			r = RProcess::CreateWithStackOverride(filename, commandLine, TUidType(), aStackSize, EOwnerProcess);
       
   127 			break;
       
   128 			
       
   129 		case ETestProcess5:
       
   130 			test.Printf(_L("Call CreateWithStackOverride\n"));	
       
   131 			r = RProcess::CreateWithStackOverride(filename, commandLine, TUidType(), aStackSize, EOwnerProcess);
       
   132 			break;
       
   133 			
       
   134 		case ETestProcess6:
       
   135 			test.Printf(_L("Call CreateWithStackOverride\n"));	
       
   136 			r = RProcess::CreateWithStackOverride(filename, commandLine, TUidType(), aStackSize, EOwnerProcess);
       
   137 			break;
       
   138 			
       
   139 		case ETestProcess7:
       
   140 			test.Printf(_L("Call CreateWithStackOverride\n"));	
       
   141 			r = RProcess::CreateWithStackOverride(filename, commandLine, TUidType(), aStackSize, EOwnerProcess);
       
   142 			break;
       
   143 
       
   144 		default:
       
   145 			User::Panic(_L("T_STACKSIZE"),1);
       
   146 			
       
   147 		}
       
   148 
       
   149 	test.Printf(_L("RTestProcess::Create end.\n"));
       
   150 	return r;
       
   151 	}
       
   152 
       
   153 
       
   154 TInt DummyRecursion(TInt aA)
       
   155 	{
       
   156 	TBuf8<2040> gobble;	// gobble 2K of stack
       
   157 	gobble.Append(TChar(aA));	// stop compiler optimising out gobble buffer
       
   158 	if (aA <= 1)
       
   159 		return aA;
       
   160 	return 1 + DummyRecursion(aA-1);
       
   161 	}
       
   162 
       
   163 TInt DoTestProcess(TInt aTestNum,TInt aArg1,TInt aArg2)
       
   164 	{
       
   165 	(void)aArg1;
       
   166 	(void)aArg2;
       
   167 
       
   168 
       
   169 	switch(aTestNum)
       
   170 		{
       
   171 	case ETestProcess1:
       
   172 		{
       
   173 		test2.Printf(_L("ETestProcess1 started with %d recursion...\n"), KNumberOfFitIteration);
       
   174 		test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
       
   175 		break;
       
   176 		}
       
   177 		
       
   178 	case ETestProcess2:
       
   179 		{
       
   180 		test2.Printf(_L("ETestProcess2 started with %d recursion...\n"), KNumberOfFitIteration);
       
   181 		test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
       
   182 		break;
       
   183 		}
       
   184 		
       
   185 	case ETestProcess3:
       
   186 		{
       
   187 		test2.Printf(_L("ETestProcess3 started with %d recusion...\n"), KNumberOfUnfitIteration);
       
   188 		test2(DummyRecursion(KNumberOfUnfitIteration)==KNumberOfUnfitIteration);
       
   189 		break;
       
   190 		}
       
   191 		
       
   192 	case ETestProcess4:
       
   193 		{
       
   194 		test2.Printf(_L("ETestProcess4 started with %d recursion...\n"), KNumberOfUnfitIteration);
       
   195 		test2(DummyRecursion(KNumberOfUnfitIteration)==KNumberOfUnfitIteration);
       
   196 		break;
       
   197 		}
       
   198 		
       
   199 	case ETestProcess5:
       
   200 		{
       
   201 		test2.Printf(_L("ETestProcess5 started with %d recursion...\n"), KNumberOfUnfitIteration);
       
   202 		test2(DummyRecursion(KNumberOfUnfitIteration)==KNumberOfUnfitIteration);
       
   203 		break;
       
   204 		}
       
   205 		
       
   206 	case ETestProcess6:
       
   207 		{
       
   208 		test2.Printf(_L("ETestProcess6 started with %d recursion...\n"), KNumberOfFitIteration);
       
   209 		test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
       
   210 		break;
       
   211 		}
       
   212 
       
   213 	case ETestProcess7:
       
   214 		{
       
   215 	
       
   216 		test2.Printf(_L("ETestProcess7 started with %d recursion\n"), KNumberOfFitIteration);
       
   217 		test2.Printf(_L("(it is raised a Panic with %d bytes stack)...\n"), KDefaultStackSize/2);
       
   218 		test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
       
   219 		break;
       
   220 		}
       
   221 		
       
   222 	default:
       
   223 		User::Panic(_L("T_STACKSIZE"),1);
       
   224 		}
       
   225 
       
   226 	test2.Printf(_L("\n\t finished.\n"));
       
   227 	
       
   228 	return KErrNone;
       
   229 	}
       
   230 
       
   231 GLDEF_C TInt E32Main()
       
   232     {
       
   233     
       
   234 	
       
   235 	TBuf16<512> cmd;
       
   236 	User::CommandLine(cmd);
       
   237 	if(cmd.Length() && TChar(cmd[0]).IsDigit())
       
   238 		{
       
   239 		test2.Title();
       
   240 		test2.Start(_L("Slave process started..."));
       
   241 		TInt function = -1;
       
   242 		TInt arg1 = -1;
       
   243 		TInt arg2 = -1;
       
   244 		TLex lex(cmd);
       
   245 		lex.Val(function);
       
   246 		lex.SkipSpace();
       
   247 		lex.Val(arg1);
       
   248 		lex.SkipSpace();
       
   249 		lex.Val(arg2);
       
   250 		int r = DoTestProcess(function,arg1,arg2); 
       
   251 		test2.End();
       
   252 		return r;
       
   253 		}
       
   254 
       
   255 	test.Title();
       
   256 
       
   257 	RTestProcess rogueP;
       
   258 	TRequestStatus rendezvous;
       
   259 
       
   260 	test.Start(_L("Create process with original Create and default stack size"));
       
   261 	TInt r = rogueP.Create(ETestProcess1, 0 );
       
   262 	test(r==KErrNone);
       
   263 	rogueP.Rendezvous(rendezvous);
       
   264 	rogueP.Resume();
       
   265 	User::WaitForRequest(rendezvous);
       
   266 	test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
       
   267 	test(rogueP.ExitType()==EExitKill);
       
   268 	
       
   269 	test.Next(_L("Create process with CreateWithStackOverride and default stack size"));
       
   270 	r = rogueP.Create(ETestProcess2, 0 );
       
   271 	test(r==KErrNone);
       
   272 	rogueP.Rendezvous(rendezvous);
       
   273 	rogueP.Resume();
       
   274 	User::WaitForRequest(rendezvous);
       
   275 	test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
       
   276 	test(rogueP.ExitType()==EExitKill);
       
   277 	
       
   278 	test.Next(_L("Create process with original Create and default stack size"));
       
   279 	r = rogueP.Create(ETestProcess3, 0 );
       
   280 	test(r==KErrNone);
       
   281 	rogueP.Rendezvous(rendezvous);
       
   282 	rogueP.Resume();
       
   283 	User::WaitForRequest(rendezvous);
       
   284 	test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
       
   285 #if !defined(__WINS__)
       
   286 	test(rogueP.ExitType()==EExitPanic);
       
   287 #else
       
   288 	test(rogueP.ExitType()==EExitKill);
       
   289 #endif
       
   290 	
       
   291 	test.Next(_L("Create process with CreateWithStackOverride and default stack size"));
       
   292 	r = rogueP.Create(ETestProcess4, 0 );
       
   293 	test(r==KErrNone);
       
   294 	rogueP.Rendezvous(rendezvous);
       
   295 	rogueP.Resume();
       
   296 	User::WaitForRequest(rendezvous);
       
   297 	test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
       
   298 	
       
   299 #if !defined(__WINS__)
       
   300 	test(rogueP.ExitType()==EExitPanic);
       
   301 #else
       
   302 	test(rogueP.ExitType()==EExitKill);
       
   303 #endif
       
   304 	
       
   305 	
       
   306 	test.Next(_L("Create process with CreateWithStackOverride and 2 * KDefaultStackSize stack size"));
       
   307 	r = rogueP.Create(ETestProcess5, 2 * KDefaultStackSize );
       
   308 	test(r==KErrNone);
       
   309 	rogueP.Rendezvous(rendezvous);
       
   310 	rogueP.Resume();
       
   311 	User::WaitForRequest(rendezvous);
       
   312 	test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
       
   313 	test(rogueP.ExitType()==EExitKill);
       
   314 
       
   315 #if !defined(__WINS__)
       
   316 	test.Next(_L("Create process with CreateWithStackOverride and negative stack size"));
       
   317 	r = rogueP.Create(ETestProcess6, - 2 * KDefaultStackSize );
       
   318 	test(r==KErrArgument);
       
   319 #endif
       
   320 
       
   321 	test.Next(_L("Create process with CreateWithStackOverride and KDefaultStackSize/2 stack size"));
       
   322 	r = rogueP.Create(ETestProcess7, KDefaultStackSize / 2 );
       
   323 	test(r==KErrNone);
       
   324 	rogueP.Rendezvous(rendezvous);
       
   325 	rogueP.Resume();
       
   326 	User::WaitForRequest(rendezvous);
       
   327 	test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
       
   328 	test(rogueP.ExitType()==EExitKill);
       
   329 	
       
   330 	test.Printf(_L("Test finished.\n"));
       
   331 	test.End();
       
   332 
       
   333 	return(0);
       
   334     }
       
   335