Sincronização de atividades em sistemas gerenciadores de workflow

AUTOR(ES)

Gustavo Kasprzak

DATA DE PUBLICAÇÃO

2003

RESUMO

Traditional Workflow Management Systems (WfMSs) manage workflow instances and their respective activities in a independent formo Activities usually have coarse granularity, are long-lived and are highly process-dependent. Moreover, they use shared applications and other resources (ex., files and data bases). The semantics of the activities, including their respective applications and shared resources, is not known by the WfMS. As a result, it is possible that the concurrent execution of conflicting workflow activities generates data inconsistencies, in addition to improper invocation and access to applications and resources. Thus, using WorkToDo as the WfMS of study, we present in this work two activity synchronization mechanisms that allow the execution of activities in a mutually exclusive form and the maintenance of ordering requirements between these activities. We still present some extensions to activity failure detectionjhandling mechanisms oí the WorkToDo to make them more powerful and robusto

ASSUNTO(S)

corba (arquitetura de computador) sincronização fluxo de trabalho processamento distribuido

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