--- a/kerneltest/e32test/stack/t_stacksize.cpp Mon Oct 19 15:55:17 2009 +0100
+++ b/kerneltest/e32test/stack/t_stacksize.cpp Mon Dec 21 16:14:42 2009 +0000
@@ -63,8 +63,14 @@
LOCAL_D RTest test(_L("T_STACKSIZE"));
LOCAL_D RTest test2(_L("*** T_STACKSIZE SLAVE ***"));
-const TInt KNumberOfFitIteration = KDefaultStackSize / 2048 - 1;
-const TInt KNumberOfUnfitIteration = (KDefaultStackSize + 2047) / 2048;
+// We are here making the assumption that one quarter of the stack should be sufficient
+// to accommodate for the overhead generated by the recursive calls as well as
+// unpredictable compiler optimisations.
+const TInt KStackGobbleSize = KDefaultStackSize / 4 - 8;
+const TInt KNumberOfFitIteration = 3;
+const TInt KNumberOfUnfitIteration = 4;
+
+const TInt KImageStackSize = 0x2000; // Test app image stack size (epocstacksize in MMP file)
enum TTestProcessFunctions
{
@@ -86,9 +92,7 @@
TInt RTestProcess::Create(TTestProcessFunctions aFunction, TInt aStackSize, TInt aArg1,TInt aArg2)
{
- test.Printf(_L("RTestProcess::Create started with stack size:%d bytes\n")
- , (0 == aStackSize ? KDefaultStackSize : aStackSize )
- );
+ test.Printf(_L("RTestProcess::Create started with stack size:%d bytes\n"), aStackSize);
if(aArg1==-1)
aArg1 = RProcess().Id();
TBuf<512> commandLine;
@@ -153,24 +157,32 @@
TInt DummyRecursion(TInt aA)
{
- TBuf8<2040> gobble; // gobble 2K of stack
+ TBuf8<KStackGobbleSize> gobble; // gobble 1/4 of the stack
gobble.Append(TChar(aA)); // stop compiler optimising out gobble buffer
if (aA <= 1)
return aA;
return 1 + DummyRecursion(aA-1);
}
+// Make these global so we don't push too much stuff on the stack
+TThreadStackInfo ThreadStackInfo;
+_LIT(KStackSizeText, "Stack size is %d bytes\n");
+
TInt DoTestProcess(TInt aTestNum,TInt aArg1,TInt aArg2)
{
(void)aArg1;
(void)aArg2;
-
+ RThread().StackInfo(ThreadStackInfo);
switch(aTestNum)
{
case ETestProcess1:
{
test2.Printf(_L("ETestProcess1 started with %d recursion...\n"), KNumberOfFitIteration);
+ test2.Printf(KStackSizeText, ThreadStackInfo.iBase - ThreadStackInfo.iLimit);
+#ifndef __WINS__
+ test2((TInt) (ThreadStackInfo.iBase - ThreadStackInfo.iLimit) == KDefaultStackSize);
+#endif
test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
break;
}
@@ -178,6 +190,10 @@
case ETestProcess2:
{
test2.Printf(_L("ETestProcess2 started with %d recursion...\n"), KNumberOfFitIteration);
+ test2.Printf(KStackSizeText, ThreadStackInfo.iBase - ThreadStackInfo.iLimit);
+#ifndef __WINS__
+ test2((TInt) (ThreadStackInfo.iBase - ThreadStackInfo.iLimit) == KDefaultStackSize);
+#endif
test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
break;
}
@@ -185,6 +201,10 @@
case ETestProcess3:
{
test2.Printf(_L("ETestProcess3 started with %d recusion...\n"), KNumberOfUnfitIteration);
+ test2.Printf(KStackSizeText, ThreadStackInfo.iBase - ThreadStackInfo.iLimit);
+#ifndef __WINS__
+ test2((TInt) (ThreadStackInfo.iBase - ThreadStackInfo.iLimit) == KDefaultStackSize);
+#endif
test2(DummyRecursion(KNumberOfUnfitIteration)==KNumberOfUnfitIteration);
break;
}
@@ -192,6 +212,10 @@
case ETestProcess4:
{
test2.Printf(_L("ETestProcess4 started with %d recursion...\n"), KNumberOfUnfitIteration);
+ test2.Printf(KStackSizeText, ThreadStackInfo.iBase - ThreadStackInfo.iLimit);
+#ifndef __WINS__
+ test2((TInt) (ThreadStackInfo.iBase - ThreadStackInfo.iLimit) == KDefaultStackSize);
+#endif
test2(DummyRecursion(KNumberOfUnfitIteration)==KNumberOfUnfitIteration);
break;
}
@@ -199,23 +223,30 @@
case ETestProcess5:
{
test2.Printf(_L("ETestProcess5 started with %d recursion...\n"), KNumberOfUnfitIteration);
+ test2.Printf(KStackSizeText, ThreadStackInfo.iBase - ThreadStackInfo.iLimit);
+#ifndef __WINS__
+ test2((TInt) (ThreadStackInfo.iBase - ThreadStackInfo.iLimit) == KDefaultStackSize * 2);
+#endif
test2(DummyRecursion(KNumberOfUnfitIteration)==KNumberOfUnfitIteration);
break;
}
case ETestProcess6:
{
- test2.Printf(_L("ETestProcess6 started with %d recursion...\n"), KNumberOfFitIteration);
- test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
- break;
+ test2(EFalse); // Process creation should have failed
}
case ETestProcess7:
{
-
test2.Printf(_L("ETestProcess7 started with %d recursion\n"), KNumberOfFitIteration);
- test2.Printf(_L("(it is raised a Panic with %d bytes stack)...\n"), KDefaultStackSize/2);
- test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
+ test2.Printf(KStackSizeText, ThreadStackInfo.iBase - ThreadStackInfo.iLimit);
+#ifndef __WINS__
+ test2((TInt) (ThreadStackInfo.iBase - ThreadStackInfo.iLimit) == KImageStackSize); // Should default to stack size set in image header
+ if (KImageStackSize == KDefaultStackSize) // If this is not the case, results can be a bit unpredictable
+ {
+ test2(DummyRecursion(KNumberOfFitIteration)==KNumberOfFitIteration);
+ }
+#endif
break;
}
@@ -258,25 +289,27 @@
TRequestStatus rendezvous;
test.Start(_L("Create process with original Create and default stack size"));
- TInt r = rogueP.Create(ETestProcess1, 0 );
+ TInt r = rogueP.Create(ETestProcess1, KDefaultStackSize);
test(r==KErrNone);
rogueP.Rendezvous(rendezvous);
rogueP.Resume();
User::WaitForRequest(rendezvous);
test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
test(rogueP.ExitType()==EExitKill);
+ CLOSE_AND_WAIT(rogueP);
test.Next(_L("Create process with CreateWithStackOverride and default stack size"));
- r = rogueP.Create(ETestProcess2, 0 );
+ r = rogueP.Create(ETestProcess2, KDefaultStackSize);
test(r==KErrNone);
rogueP.Rendezvous(rendezvous);
rogueP.Resume();
User::WaitForRequest(rendezvous);
test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
test(rogueP.ExitType()==EExitKill);
+ CLOSE_AND_WAIT(rogueP);
test.Next(_L("Create process with original Create and default stack size"));
- r = rogueP.Create(ETestProcess3, 0 );
+ r = rogueP.Create(ETestProcess3, KDefaultStackSize);
test(r==KErrNone);
rogueP.Rendezvous(rendezvous);
rogueP.Resume();
@@ -287,22 +320,22 @@
#else
test(rogueP.ExitType()==EExitKill);
#endif
+ CLOSE_AND_WAIT(rogueP);
test.Next(_L("Create process with CreateWithStackOverride and default stack size"));
- r = rogueP.Create(ETestProcess4, 0 );
+ r = rogueP.Create(ETestProcess4, KDefaultStackSize);
test(r==KErrNone);
rogueP.Rendezvous(rendezvous);
rogueP.Resume();
User::WaitForRequest(rendezvous);
- test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
-
+ test.Printf(_L("ExitType:%d\n"),rogueP.ExitType());
#if !defined(__WINS__)
test(rogueP.ExitType()==EExitPanic);
#else
test(rogueP.ExitType()==EExitKill);
#endif
-
-
+ CLOSE_AND_WAIT(rogueP);
+
test.Next(_L("Create process with CreateWithStackOverride and 2 * KDefaultStackSize stack size"));
r = rogueP.Create(ETestProcess5, 2 * KDefaultStackSize );
test(r==KErrNone);
@@ -311,6 +344,7 @@
User::WaitForRequest(rendezvous);
test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
test(rogueP.ExitType()==EExitKill);
+ CLOSE_AND_WAIT(rogueP);
#if !defined(__WINS__)
test.Next(_L("Create process with CreateWithStackOverride and negative stack size"));
@@ -318,14 +352,15 @@
test(r==KErrArgument);
#endif
- test.Next(_L("Create process with CreateWithStackOverride and KDefaultStackSize/2 stack size"));
- r = rogueP.Create(ETestProcess7, KDefaultStackSize / 2 );
+ test.Next(_L("Create process with CreateWithStackOverride and KImageStackSize/2 stack size"));
+ r = rogueP.Create(ETestProcess7, KImageStackSize / 2 );
test(r==KErrNone);
rogueP.Rendezvous(rendezvous);
rogueP.Resume();
User::WaitForRequest(rendezvous);
test.Printf(_L("ExitType:%d\n"),rogueP.ExitType() );
test(rogueP.ExitType()==EExitKill);
+ CLOSE_AND_WAIT(rogueP);
test.Printf(_L("Test finished.\n"));
test.End();