--%>
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 : Define Double buffering Double

    Double buffering: A graphics method employed to smooth animation. The later version of an image is drawn `at the back the scenes' and then exhibited in its totality whenever the drawing is finished. The supposition is that it will be relatively fast t

    		•
  • Q : Explain the way to start a Web Service

    Explain the way to start a Web Service.

    		•
  • Q : Define Livelock Livelock : It is a

    Livelock: It is a situation in which a thread waits to be notified of a condition however, on waking, finds that the other thread has inverted the condition another time. The primary thread is forced to wait again. Whenever this occurs for an indefini

    		•
  • Q : Define the term Identifier Define the

    Define the term Identifier: It is a programmer-defined name for a method, variable, class and interface.

    		•
  • Q : Basic features of OOPs Illustrate the

    Illustrate the basic features of OOPs?

    		•
  • Q : Explain Decrement operator Decrement

    Decrement operator: It is an operator (--) which adds one to its operand. This has two forms: pre-decrement (--x) and post-decrement (x--). In its pre-decrement form, the outcome of the expression is the value of its argument subsequent to the decreme

    		•
  • Q : Explain different cursors types in ADO

    What are the different cursors types in ADO and illustrated them?

    		•
  • Q : What is Random Access Memory Random

    Random Access Memory: Random access memory, or RAM, is the memory whose contents are simply accessible to the processing components of a computer. In specific, the time it takes to read and write to a particular portion of the memory does not based on

    		•
  • Q : Define the term Module Module : It is a

    Module: It is a group of program components, usually with restricted visibility to program components in other modules. Java employs packages to implement this perception.

    		•
  • Q : Platform security of S60 third Edition

    How do I know that platform security abilities my S60 3rd Edition application needs?

    		•