--%>
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 Cast Cast : Where Java does not

    Cast: Where Java does not allow the utilization of a source value of one type, it is essential to use a cast to force the compiler to admit the use for the target type. The care must be taken with casting values of primitive types, as this frequently

    		•
  • Q : Overriding a base class method in

    Explain the way to overriding a base class method in Visual Studio .NET and in Visual Studio 2005.

    		•
  • Q : Describe Unnamed package Unnamed

    Unnamed package: All classes defined in the files without a package declaration are placed in an unnamed package.

    		•
  • Q : Define Container Abstractions Container

    Container Abstractions: Abstractions for containers (such as lists, stacks, sets, or queues) may represent just the state of a container—e.g., full or empty—and abstract away from the actual container content. The list operations also need

    		•
  • Q : What is Logical error Logical error :

    Logical error: It is an error in the logical of a class or method. Such an error may not lead to an instant runtime error, however could have a noteworthy impact on overall program exactness.

    		•
  • Q : Active Server Pages Briefly describe

    Briefly describe how Active Server Pages work. How, when, and where they are used.

    		•
  • Q : Concept of object oriented analysis

    Q. Explain the concept of object oriented analysis with explanation of all steps of analysis. 

    Q : Meaning of active and passive objects

    Illustrate in brief the meaning of active and passive objects?

    		•
  • Q : Long lock in the tibco iProcess

    Describe the term Long lock in the tibco iProcess in brief.

    		•
  • Q : Explain Window manager Window manager :

    Window manager: This is a window manager which provides a computer user with a virtual desktop having one or more windows and working regions in which individual programs might be run. Window managers permit the contents of a user's desktop to be arra

    		•