--%>
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 HyperText Markup Language

    HyperText Markup Language: The HyperText Markup Language (abbreviated as HTML) is a simple presentation language employed to markup the content of the Web pages. Its tags appear frequently in pairs to mark sections of text which must be represented in

    		•
  • Q : Define Protocol Protocol : It is a set

    Protocol: It is a set of rules for interaction between two processes. The protocol is generally specified in a Uniform Resource Locator (abbreviated as URL) to point out how a specific resource must be transferred from a Web server to the requesting c

    		•
  • Q : What is Boolean expression Boolean

    Boolean expression: It is an expression whose outcome is of type Boolean, that is, gives a value of either true or false. The operators like && and || take Boolean operands and generate a Boolean outcome. The relational operators obtain operan

    		•
  • Q : What are the applications of testing

    What are the applications of testing life cycle?

    		•
  • Q : ERD What is the meaning ofDerive the

    What is the meaning ofDerive the department and staff relations from the following ERD.

    		•
  • Q : Explain Method overriding Method

    Method overriding: It is a method stated in a super class might be overridden by a method of similar name stated in a sub class. The two methods should have similar name and number and types of formal arguments. Any checked exception thrown by sub-cla

    		•
  • Q : Use Finite-State Space Abstractions Use

    Use Finite-State Space Abstractions: In order to successfully apply explicit-state model checking, defects must be detectable in a sufficiently small state space. This can be achieved either by means of heuristics that constrain the way the state spac

    		•
  • Q : Limit the Scope of Data Declarations

    Limit the Scope of Data Declarations at the smallest possible level is consistent with the well known principle of data hiding. It stops one module from inadvertently referencing and modifying data values which are only meant to be used by another mod

    		•
  • Q : Explain win 3.1 supports which form of

    Explain win 3.1 supports which form of multi tasking?

    		•
  • Q : What is Kernel Write about the Kernel?

    Write about the Kernel?

    		•