Parallel objects in distributed Ada95 compiler and running system-PDEFA

Ada95 is an object-oriented concurrent programming language. PDEFA is a distributed Ada95 system. In PDEFA, task and protected objects in Ada95 are turned into independent and service objects respectively, and run under the control of a daemon program. Independent and service objects in PDEFA are called parallel objects. An independent object performs operations of its own, while a service object provides service to other parallel objects. A daemon manages all parallel objects and regulates their creation and termination.