--%>
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 the term Instance Define the

    Define the term Instance: It is a synonym for object. The objects of a class are instantiated whenever a class constructor is invoked through the new operator.

    		•
  • Q : What is Hostname What is Hostname : It

    What is Hostname: It is the name of a host system.

    		•
  • Q : Explain the term Web Services

    Explain the term Web Services Description Language.

    		•
  • Q : What is a Sub class Sub class : It is a

    Sub class: It is a class which extends its super class. The sub-class inherits all the members of its super class. All Java classes are the sub-classes of Object class, which is at the root of inheritance hierarchy.

    		•
  • Q : Risks associated while porting a c pre

    Q. 1 Explain number of issues which are faced while porting a c pre processor in java. These issues always have the probability that the code will show errors while trying to execute the code in java.  Q.2 : Software Requirement Specification or Requirements for the studen

    		•
  • Q : Block Started by Symbol What is the

    What is the Block Started by the Symbol?

    		•
  • Q : What is Runtime stack Runtime stack :

    Runtime stack: It is a stack structure maintained by the Java Virtual Machine which records that methods are presently being executed. The most of late entered technique will be at the top of the stack and the main technique of an application will be

    		•
  • Q : What is Quotient Quotient: Whenever

    Quotient: Whenever integer division is executed, the outcome comprises of a quotient and a remainder. The quotient symbolizes the integer number of times which the divisor divides into the dividend. For example, in 5/3, 5 is the dividend and 3 is the

    		•
  • Q : ERD What is the meaning ofDerive the

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

    		•
  • Q : Explain the benefits of distributed

    Explain the benefits of distributed systems.

    		•