--%>
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 : Storing the CSS Definitions in external

    Describe the code in order to store CSS Definitions within the external Files.

    		•
  • Q : Define Binary search Binary search :

    Binary search: This is a search of sorted data, in which the middle place is examined first. The search continues with either the right or the left part of the data, therefore removing half the remaining search space. This procedure is repeated at eac

    		•
  • Q : Explain win 3.1 supports which form of

    Explain win 3.1 supports which form of multi tasking?

    		•
  • Q : Explain the term Test Fusion Report of

    Explain the term Test Fusion Report of QTP?

    		•
  • Q : What is an Attribute Attribute : It is

    Attribute: It is a particular usage of an instance variable. The set of attribute values held in a specific instance of a class state the current state of that instance. A class definition might impose specific constraints on the valid states of its i

    		•
  • Q : Explain Constructor Constructor : A

    Constructor: A constructor is automatically called whenever an instance of its class is formed. A constructor always has similar name as its class, and encompass no return type. For example: public

    		•
  • Q : Is a XML replacing HTML Is a XML

    Is a XML replacing HTML?

    		•
  • Q : What is an Initializer Initializer : A

    Initializer: A block stated at the outermost level of a class - identical to a method devoid of a header. The initializer blocks are executed, in order, whenever an instance is formed. They are executed prior to the constructor of the defining class,

    		•
  • Q : Depths of categories-subcategories

    Normal 0 false false

  • Q : What is Datagram Datagram : It is a

    Datagram: It is a packet of information passed between the two communicating procedures across a network. Both the Transmission Control Protocol (abbreviated as TCP) and the User Datagram Protocol (abbreviated as UDP) are indirectly comprised in sendi

    		•