--%>
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 Inheritance hierarchy

    Inheritance hierarchy: The relationship among super-classes and sub-classes is termed as an inheritance hierarchy. The single inheritance of classes means that each and every class has simply a single `parent' class and that Object class is the eventu

    		•
  • Q : Define Package Package : The named

    Package: The named grouping of classes and interfaces which gives a package namespace. Classes, interfaces and class members devoid of an explicit public, protected or private access modifier {access!modifier} encompass package visibility. The public

    		•
  • Q : Define the term Writer class Writer

    Writer class: It is a sub class of the Writer abstract, stated in the java.io package. The writer classes translate output from Unicode to the host-dependent character set encoding.

    		•
  • Q : Types of buffering supported by UNIX

    Explain different types of buffering which is supported by the UNIX?

    		•
  • Q : What is an Overriding for breadth

    Overriding for breadth: It is a form of method overriding in which the sub-class version of a technique implements its own behavior within the context of attributes and behavior of the sub-class and then calls the super-class version and hence it can

    		•
  • Q : Define Constant Constant : It is the

    Constant: It is the memory block where value can be stored once although can’t modify later on throughout program execution. Example: const int pi =3.14;

    		•
  • Q : Describe IEEE 754 IEEE 754 : The

    IEEE 754: The standard 754-1985 issued by Institute of Electrical and Electronic Engineers for the binary floating point arithmetic. It is the standard to which Java's arithmetic matches.

    		•
  • Q : Index value of the initial element in

    Write the index value of the initial element in an array?

    		•
  • Q : Explain the difference between a

    Explain the difference between a computer process and thread.

    		•
  • Q : Questions on java class Array 1.

    1. Suppose we have a class A which has a constructor that takes a single integer. (a) After the following statements have been executed, how many A objects will exist