--%>
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 Test Object Model Define the

    Define the terms Test Object Model, Test Object and Run-Time object?

    		•
  • Q : What is Bounded repetition Bounded

    Bounded repetition: The Repetition where statements within a loop's body are executed a fixed number of times and the number of times is established whenever the loop began. There is no control structure in Java which guarantees the bounded repetition

    		•
  • Q : Automaton distributed in the class

    Write a code in a c++/java  for the automaton distributed in the class which accepts keywords(cat,bat,cab). Create an input file with these words may be two or three copies of these words scattered in a paragraph and show that your program does accept these words and gives an output to that

    		•
  • Q : Define Divide and conquer Divide and

    Divide and conquer: An approach to trouble solving which attempts to decrease an overall single big trouble into multiple simpler troubles.

    		•
  • Q : Define the term Interface inheritance

    Interface inheritance: Whenever a class implements an interface, the interface inheritance relationship exists among them. The class inherits no implementation from interface, just method signatures and static variables. It is as well possible for one

    		•
  • Q : Explain Primitive Type Abstractions

    Primitive Type Abstractions: An effective way to reduce the state space of a program is to replace the primitive types with the corresponding abstractions that encapsulate all the possible operations that are performed on these types.

    Q : Describe Overriding for restriction

    Overriding for restriction: It is a form of method overriding in which the sub-class version of a method calls the super-class version first of all and then employs or manipulates the outcome or consequences of that call in some manner.

    		•
  • Q : Explain Synchronized statement

    Synchronized statement: It is a statement in which an object-lock should be obtained for the target object prior to the body of the statement and can be entered. Employed to enclose a critical section in order to save a race hazard.

    		•
  • Q : Define the term Heterogeneous collection

    Define the term Heterogeneous collection: It is a collection of objects with distinct dynamic types

    		•
  • Q : Define Thread starvation Thread

    Thread starvation: It is a condition which applies to a thread which is prevented from running by other threads which do not yield or turn into blocked.

    		•