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// $Id: Stacks.cpp 94312 2011-07-11 00:39:42Z schmidt $
#include "ace/OS_Memory.h"
#include "ace/Log_Msg.h"
#include "ace/Containers.h"
#include "DataElement.h"
class StackExample
{
public:
StackExample (): privateStack_(100) {}
// Illustrate all the differnet
// types of stacks provided by ACE.
int run (void);
private:
// Illustrate the use of a bounded stack.
int runBoundedStack (void);
// Illustrate the use of an unbounded stack.
int runUnboundedStack (void);
// Illustrate the use of a compile time fixed stack.
int runFixedStack (void);
private:
ACE_Bounded_Stack<DataElement*> privateStack_;
};
int StackExample::run (void)
{
ACE_TRACE ("StackExample::run");
ACE_ASSERT(!this->runBoundedStack());
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n# of live objects %d\n"),
DataElement::numOfActiveObjects()));
ACE_ASSERT(!this->runFixedStack());
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n# of live objects %d\n"),
DataElement::numOfActiveObjects()));
ACE_ASSERT(!this->runUnboundedStack());
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\n# of live objects %d\n"),
DataElement::numOfActiveObjects()));
return 0;
}
// Listing 1 code/ch05
int StackExample::runBoundedStack (void)
{
ACE_TRACE ("StackExample::runBoundedStack");
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Using a bounded stack\n")));
ACE_Bounded_Stack<DataElement> bstack1 (100);
// The element array is constrained to this scope.
{
DataElement elem[100];
for (int i = 0; i < 100; i++)
{
elem[i].setData(i);
// Push the element on the stack.
bstack1.push (elem[i]);
}
}
ACE_Bounded_Stack<DataElement> bstack2 (100);
// Make a copy!
bstack2 = bstack1;
for (int j = 0; j < 100; j++)
{
DataElement elem;
bstack2.pop (elem);
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"), elem.getData ()));
}
return 0;
}
// Listing 1
// Listing 2 code/ch05
int StackExample::runFixedStack (void)
{
ACE_TRACE ("StackExample::runFixedStack");
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Using a fixed stack\n")));
ACE_Fixed_Stack<DataElement*, 100> fstack;
for (int k = 0; k < 100; k++)
{
DataElement* elem;
ACE_NEW_RETURN(elem, DataElement (k), -1);
fstack.push (elem); // Push the element on the stack.
}
for (int l = 0; l < 100; l++)
{
DataElement* elem = 0;
fstack.pop (elem);
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"), elem->getData ()));
delete elem;
}
return 0;
}
int StackExample::runUnboundedStack (void)
{
ACE_TRACE ("StackExample::runUnboundedStack");
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Using an unbounded stack\n")));
ACE_Unbounded_Stack<DataElement*> ustack;
for (int m = 0; m < 100; m++)
{
DataElement *elem;
ACE_NEW_RETURN(elem, DataElement (m), -1);
// Push the element on both stacks.
ustack.push (elem);
privateStack_.push (elem);
}
// Oddly enough, you can actually iterate through an
// unbounded stack! This is because underneath the covers
// the unbounded stack is a linked list.
// This will cause the elements in the private stack to
// also disappear!
ACE_Unbounded_Stack_Iterator<DataElement*> iter (ustack);
for (iter.first (); !iter.done (); iter.advance ())
{
DataElement** elem = 0;
iter.next (elem);
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("%d:"),
(*elem)->getData ()));
delete (*elem);
}
return 0;
}
// Listing 2
int ACE_TMAIN (int, ACE_TCHAR *[])
{
StackExample se;
return se.run ();
}
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