--%>
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 : Write a programme in C++ to write and

    		•
  • Q : Define Unconditional Jumps

    Unconditional Jumps: Jumps which are not strictly upwards in the block hierarchy can require extensive control-flow manipulation, including creation of redundant code, and should be avoided if possible. Such jumps add considerable modeling overhead fo

    		•
  • Q : Explain the term Test Fusion Report of

    Explain the term Test Fusion Report of QTP?

    		•
  • Q : Write a program using simple loop

    Objective:  The purpose of this problem is to gain experience with the principles necessary to write a program using simple loop, decision processing, counters and accumulators Save the Barns, a bi-partisan po

    		•
  • Q : Define Passing by value Passing by

    Passing by value: In this process separate memory builds for formal arguments and when any modifications done on formal variables, it will not influence the real variables. Therefore actual variables are preserved in this situation.

    		•
  • Q : Learning File system with operations

    Program 1. Purpose of this assignment is to learn to work with files.Assignment: The file, data.txt, is provided on the class website. Each line of the file consists of a binary operator followed by two operands. Your program wi

    		•
  • Q : Explain Declaration and initialization

    Declaration and initialization: It is a statement in which a variable is declared and instantly given its initial value. Three illustrations of declaration and initialization are as follows:     int

    		•
  • Q : Define Deadlock Deadlock : A situation

    Deadlock: A situation which occurs whenever two threads each acquires the lock to one of a set of resources which they both require.

    		•
  • Q : Define Out of scope Out of scope : It

    Out of scope: It is a variable is in scope as long as the program's flow of control is in the variable's defining block. Or else, this is out of scope.

    		•
  • Q : Difference between the choice and list

    Illustrate the difference between the choice and list?

    		•