--%>
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 : Describe MCP or Model Checker for C plus

    MCP: Model Checker for C++ (MCP) is an explicit-state software model checker being introduced by the Robust Software Engineering group at NASA Ames Research Center (Thompson and Brat, 2008). MCP was constructed specifically to allow programs written i

    		•
  • Q : Explain Coupling Coupling : Coupling

    Coupling: Coupling occurs whenever classes are aware of each of other as their instances should interact. The linkage between two classes which might be either weak or strong. Stronger coupling occurs whenever one class has a thorough knowledge of the

    		•
  • Q : Define Class scope Class scope :

    Class scope: Private variables stated outside the methods in a class contain class scope. They are available from all methods within a class, in spite of the order in which they are stated. The private methods too contain class scope. Variables and me

    		•
  • Q : Mission Critical Systems or a real-time

    Determine the important aspect of Mission Critical Systems or a real-time system.

    		•
  • Q : Generating uniform random numbers using

    In .NET, write a simple web service in C# to generate uniform random numbers. Use the class System.Random to generate the random numbers. What part of the code is specifically associated with web services? How could you deploy the web service?

    		•
  • Q : Different file types Specify the

    Specify the different file types?

    		•
  • Q : Define the term Monitor Define the term

    Define the term Monitor: It is an object with one or more synchronized techniques.

    		•
  • Q : Explain Hot spot Hot spot : This is an

    Hot spot: This is an area in an image map with a specific significance. A program usually monitors movements of the mouse, and reacts according to the actions related with the hot spots over which it passes. This may comprise displaying various status

    		•
  • Q : What is a Sub class Sub class : It is a

    Sub class: It is a class which extends its super class. The sub-class inherits all the members of its super class. All Java classes are the sub-classes of Object class, which is at the root of inheritance hierarchy.

    		•
  • Q : Template class and class template in

    Illustrate the difference between a template class and class template in the programming?

    		•