void JSStack::sanitizeStack()
{
ASSERT(getTopOfStack() <= getBaseOfStack());
if (m_lastStackTop < getTopOfStack()) {
char* begin = reinterpret_cast<char*>(m_lastStackTop);
char* end = reinterpret_cast<char*>(getTopOfStack());
memset(begin, 0, end - begin);
}
m_lastStackTop = getTopOfStack();
}
// compute final result of responding postfix
ElementType compute_postfix()
{
Stack output;
int i;
ElementType *p;
int value;
int operand1;
int operand2;
output = createStack(Size); // create stack with length Size
i = 0;
p = getArray(operand); // get operand->array
while(i < getTopOfStack(operand))
{
value = *(p+i++);
if(value == ' ')
continue;
if(isOperator(value))
{
operand1 = top(output);
pop(output);
operand2 = top(output);
pop(output);
value = computeResult(operand1, operand2, value);
push(value, output);
continue;
}
push(value - 48, output);
}
return getArray(output)[0];
}
void JSStack::gatherConservativeRoots(ConservativeRoots& conservativeRoots)
{
conservativeRoots.add(getBaseOfStack(), getTopOfStack());
}
void JSStack::gatherConservativeRoots(ConservativeRoots& conservativeRoots, JITStubRoutineSet& jitStubRoutines, CodeBlockSet& codeBlocks)
{
conservativeRoots.add(getBaseOfStack(), getTopOfStack(), jitStubRoutines, codeBlocks);
}
