--%>
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 Base type Base type : The kind

    Base type: The kind of items that might be stored in an array - the arrays defined type. For example, in     int[] numbers; the base type

    		•
  • Q : Define Scope Scope : A language's scope

    Scope: A language's scope rules establish how broadly variables, methods and classes are visible in a class or program. The local variables contain a scope restricted to the block in which they are stated, for example. Private methods and variables co

    		•
  • Q : Why do I require TC Trustcenter

    Why do I require TC Trustcenter Publisher ID?

    		•
  • Q : Chown Explain the chown, chmod and

    Explain the chown, chmod and chgrp?

    		•
  • Q : Explain Command-line argument

    Command-line argument: The arguments passed to a program whenever it is run. The Java program receives such in the single formal argument to its major method: public static void main(String[] args)

    		•
  • Q : Explain Switch statement Switch

    Switch statement: It is a selection statement in which the value of an arithmetic expression {expression!arithmetic} is compared for the match alongside different case labels. When no match is found, the optional default label is chosen For example:

    		•
  • Q : What is Behavior Behavior : It is the

    Behavior: It is the methods of a class which implement its behavior. A particular object's behavior is a mixture of the method definitions of its class and the present state of the object.

    		•
  • Q : Fact table and dimension table describe

    describe the foreign key in fact table and dimension table

    		•
  • Q : Function overloading in C plus Function

    Function overloading in C++: The function name containing numerous definitions which are differentiable by the number or kinds of their arguments is termed as function overloading.

    		•
  • Q : Define the term Nested class Define the

    Define the term Nested class:  It is a class stated within an enclosing class.

    		•