--%>

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 the term soft real-time Explain

    Explain the term soft real-time.

  • Q : Define Software engineering Software

    Software engineering: It is the system of applying of an engineering discipline to the implementation, design and maintenance of the software systems.

  • Q : Define the term Graphical User Interface

    Graphical User Interface: A Graphical User Interface (abbreviated as GUI) is a part of a program which permits user interaction through graphical components, like menus, buttons, text areas, and so forth. Interaction frequently includes the usage of a

  • Q : What is an Instruction set Instruction

    Instruction set: The set of instructions which characterize a specific Central Processing Unit. The programs written in the instruction set of one type of CPU can’t usually be run on any other kind of CPU.

  • Q : Define the term Catching exceptions

    Catching exceptions: Exceptions are caught in the catch clause of the try statement. Catching an exception provides the program a chance to recover from the trouble or attempt a repair for whatsoever caused it.

  • Q : Restrictions implied on API functions

    What are the restrictions implied on API functions?

  • Q : Explain Call-by-value Call-by-value:

    Call-by-value: The semantics of passing an argument to a method in which a copy of actual argument value is taken and positioned in a separate memory location, symbolized by the corresponding formal argument. As an outcome, assignment to the formal ar

  • Q : Security Manager on Applets Write down

    Write down some of the restrictions imposed by using a Security Manager on Applets?

  • Q : Define Radio buttons Radio buttons : It

    Radio buttons: It is a group of selectable components in which merely one component might be selected. The selection of one of the group that causes the previously chosen component to be deselected.

  • Q : Ways in which Java program is less

    Give two ways in which a Java program is less likely to be compromised than the same program written in C++.