By Peter A. Buhr, Roy Krischer (auth.), Christophe Dony, Jørgen Lindskov Knudsen, Alexander Romanovsky, Anand Tripathi (eds.)
Modern software program platforms have gotten extra advanced in lots of methods and are having to deal with increasingly more irregular events which, in flip, are more and more complicated to deal with. Exception dealing with is a necessary a part of software program and procedure architectures and an important aspect within the tool-set that permits the construction of resilient, strong and secure software program platforms. ECOOP workshops on exception dealing with have been held in 2003 and 2005. This booklet is basically an end result of those occasions - numerous workshop contributors in addition to a few different best researchers within the box have been invited to give a contribution a bankruptcy each.
This booklet consists of 5 components; the 1st 4 care for issues regarding exception dealing with within the context of programming languages, concurrency and working platforms, pervasive computing structures, and specifications and requisites. The final half specializes in case experiences, experimentation and qualitative comparisons. The sixteen coherently written chapters through major researchers safely handle a variety of concerns in exception handling.
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Additional resources for Advanced Topics in Exception Handling Techniques
Sample text
2001) 22. : Pinpoint: Problem determination in large, dynamic Internet services. In: International Conference on Dependable Systems and Networks, IEEE Computer Society (2002) 595–604 Exception Handling in the Choices Operating System Francis M. David, Jeffrey C. Carlyle, Ellick M. Chan, David K. Raila, and Roy H. edu/ Abstract. Exception handling is a powerful abstraction that can be used to help manage errors and support the construction of reliable operating systems. Using exceptions to notify system components about exceptional conditions also reduces coupling of error handling code and increases the modularity of the system.
Meth ∈ / Σ) then we propagate the symbolic state f directly. If the method is in the policy and the incoming dataflow fact f contains a state s that could transition on that method we apply that transition δ and then append the path label L. This is similar to the way tracked resources are handled in the Vault type system [11]. Exception-Handling Bugs in Java f f L: meth() L: if fthen f felse fn fe L: other fother 27 fᙵ f L: join fjoin fthen = extend(f, L) felse = extend(f, L) extend(f, L) if meth ∈ /Σ extend( {s } ∪ T , L , L) if f = T ∪ {s}, L and δ( s, meth ) = s fn = extend( {s} ∪ T , L , L) else if f = T , L and δ( s0 , meth ) = s ∅ otherwise (indicates a policy violation) extend( {s } ∪ T , L , L) if f = T ∪ {s}, L and δ( s, meth ) = s and s ∈ F fe = extend(f, L) otherwise fother = extend(f, L) extend(shorter(f, f ), L) if f = T , L and f = T , L fjoin = extend(f, L) ∪ extend(f , L) otherwise extend( T , L , L) = { T ,L • L } T , L if |L| ≤ |L | shorter( T , L , T , L ) = T , L otherwise Fig.
Sockets, Streams, file handles and JDBC database connections) to all programs. In addition, a total of 69 program-specific policies (found via specification mining [13]) were also used where applicable. All of the reported methods were then manually inspected to verify that they contained at least one error along a reported path. Simple heuristics eliminated all false positive reports for these programs. All paths in Figure 3 arose in the presence of exceptions the program did not handle correctly.
