--%>
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 Virtual memory Virtual memory :

    Virtual memory: It is computer will comprise a limited amount of real memory accessible to it. Programs frequently need more memory than the quantity of real memory. Moreover, in a multiprogramming system, various processes will be competing for simil

    		•
  • Q : Restrictions implied on API functions

    What are the restrictions implied on API functions?

    		•
  • Q : Explain Message passing Message passing

    Message passing: We characterize the object interactions as message passing. The client object sends a message to a server object by invoking a technique from the server's class. Arguments might be passed with the message, and a outcome is returned by

    		•
  • Q : What is an Exception handler Exception

    Exception handler: It is a try statement which acts as an exception handler - a place where exception objects are dealt and caught with.

    		•
  • Q : Define the term core validation Define

    Define the term core validation?

    		•
  • Q : Explain Array initializer Array

    Array initializer: This is an initializer for an array. The initializer takes the position of separate creation and initialization steps. For example, the initializer int[] pair = { 4, 2, };

    Q : Image reconstruction in CT using MATLAB

    What is Image reconstruction in CT using MATLAB?

    		•
  • Q : Define the term Mutual recursion Define

    Define the term Mutual recursion: Recursion which outcomes from two methods calling one other recursively.

    		•
  • Q : What is Carriage return Carriage return

    Carriage return: The \r character. It is also used as a synonym for the `Return' or `Enter' key employed to terminate a line of text and the name derives from the carriage on mechanical typewriter.

    		•
  • Q : What is Hash function Hash function : A

    Hash function: A function employed to generate a hash code from the random contents of an object. The classes can override the hash Value method, inherited from the Object class, to state their own hash function.

    		•