--%>
Assignment Help - homework help

Use of setjmp and longjmp

Use of setjmp() and longjmp(): In C/C++, setjmp() saves the contents of the registers at a particular state in the program and longjmp() will restore that state later. In this way, longjmp() “returns” to the state of the program when setjmp() was called.

In general these functions are problematic for C++ because they do not support C++ object semantics. In particular, they do not ensure the proper destructor calls and so objects may not be cleaned up properly, leaving the system in a bad state.

Using these functions may also degrade performance by preventing optimization on local variables. For C++ exception handling, try/catch constructs are recommended instead.

214_serjmp.jpg

For model checking in particular, non-hierarchical long jumps are difficult to model with modeling languages like Java. These functions need to do register restoration which requires modeling of registers and their related operations, adding considerable overhead to model-checking effort.

   Related Questions in Programming Languages

  • Q : Explain the applications of testing

    Explain the applications of testing life cycle.

    		•
  • Q : Define Fully evaluating operator Fully

    Fully evaluating operator: An operator which computes all of its arguments to generate an outcome. Standard arithmetic operators, like +, are totally evaluating. In contrary, some Boolean operators, like &&, are short-circuit operators.

    		•
  • Q : Use of private Q. Explain the use of

    Q. Explain the use of private, public, protected access specifies.  

    		•
  • Q : Use of new operator What is the use of

    What is the use of new operator?

    		•
  • Q : Chown Explain the chown, chmod and

    Explain the chown, chmod and chgrp?

    		•
  • Q : Explain Decrement operator Decrement

    Decrement operator: It is an operator (--) which adds one to its operand. This has two forms: pre-decrement (--x) and post-decrement (x--). In its pre-decrement form, the outcome of the expression is the value of its argument subsequent to the decreme

    		•
  • Q : Define Sign bit Sign bit : In

    Sign bit: In 2s-complement notation, the most important bit in an integer value is employed to determine the sign of the value. A 1-bit point out a negative number and a 0 bit point out a positive number.

    		•
  • Q : ArrayLists I. The Assignment The

    I. The Assignment The Bashemin Parking Garage contains a single lane that can hold up to ten cars.  Arriving cars enter the garage at the rear and are parked in the empty space nearest to the front.  Departing cars exit only from the front.  If a cu

    		•
  • Q : Define the term Internet Define the

    Define the term Internet: It is a global network of numerous interconnected networks.

    		•
  • Q : Explain why java is so important for

    The internet aided java to the forefront of programming. And java consequently has had a deep effect on the internet. The reason for this is highly simple: java uses the universe of objects that can travel freely in cyber space. In a network, two broad categories of

    		•