--%>
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 : What is Break statement Break statement

    Break statement: A statement employed to break out of a loop, switch statement or labeled block. In all situations, control continues with the statement instantly, subsequent to the containing block.

    		•
  • Q : Explain the relationship between XHTML

    Explain the relationship between XHTML and XML?

    		•
  • Q : Explain way to open one resistance of

    Explain the way to open just one resistance of vb application (.exe).

    		•
  • Q : State the term GPC and GPT State the

    State the term GPC and GPT.

    		•
  • Q : "This" Pointer "this" pointer: In C++

    "this" pointer: In C++ uses a unique keyword called "this" to represent a object that

    		•
  • Q : Define Arithmetic operator Arithmetic

    Arithmetic operator: The Operators, like +, -, *, / and %, which generate a numerical outcome, as a part of an arithmetic expression.

    		•
  • Q : Explain Operating system Operating

    Operating system: The operating system permits a computer's hardware devices to be accessed by the programs. For example, it permits data to be managed on a computer's disks in the form of a file system and it delivers the co-ordinate positions of a m

    		•
  • Q : Explain Cast Cast : Where Java does not

    Cast: Where Java does not allow the utilization of a source value of one type, it is essential to use a cast to force the compiler to admit the use for the target type. The care must be taken with casting values of primitive types, as this frequently

    		•
  • Q : Explain Sign extension Sign extension :

    Sign extension: Whenever an integer value from a type with a specific range is stored in a variable with a larger range, Java employs sign extension to determine the resultant value. The most important bit in the original value is employed to fill the

    		•
  • 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

    		•