--%>
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 the benefits of DLR Write the

    Write the benefits of DLR?

    		•
  • Q : Explain Infinite loop Infinite loop :

    Infinite loop: The loop whose termination test never computes to false. At times this is a deliberate act on the portion of the programmer, employing a construct like:         whi

    		•
  • Q : Explain Cohesion Cohesion : The level

    Cohesion: The level to which a component executes a single well-stated task. A strongly cohesive technique, for example, will execute a single task, like adding an item to a data structure, or sorting several data, while a weakly cohesive technique wi

    		•
  • Q : Software Quality Assurance and Software

    What real-life experience have you gained along with Software Quality Assurance as well as Software Quality Control?

    		•
  • Q : How you explain binding in WSDL How you

    How you explain binding in WSDL?

    		•
  • Q : How authorities save their Private Keys

    How do certifying authorities save their Private Keys?

    		•
  • Q : Explain the term packing life cycle

    Explain the term packing life cycle.

    		•
  • Q : Computer science 1. Here is a short

    1. Here is a short program. It prints out the value of a variable "x". Ernie and Bert disagree about what will be printed: Ernie says, the value gets changed in "changeX" so it will print "7", and Bert says, no, when the function exits the changes get reversed and the value goes back to "5". Explain

    		•
  • Q : Explain Redundant value Redundant value

    Redundant value: The value of a data type which has no use or meaning in a particular context. For example, negative values would be redundant a class employing integer attributes to the model assignment marks. In several applications, redundant patte

    		•
  • Q : What is Protected access Protected

    Protected access: Protected access is accessible to a class member prefixed with protected access modifier. This member is accessible to all classes stated within the enclosing package, and any sub-classes expanding the enclosing class.

    		•