21. Some of these are based on message passing , while others have different mechanisms for concurrency. 22. However, the message passing of Smalltalk-72 was quite complex. 23. Synchronous message passing is what typical object-oriented programming languages such as Java and Smalltalk use. 24. Message passing , via MPI, is the presumptive programming model.25. Along with messages passed from the lawyer, the families occasionally receive faxes from their children. 26. Software on the Orion communicated with the microcomputer using a high level message passing protocol. 27. Message passing is used ubiquitously in modern computer software.28. Examples are PVM ( Parallel Virtual Machine ) and MPI ( Message Passing Interface ). 29. The distributed version currently runs in any environment supported by the PVM message passing protocol. 30. ;Message passing communication : Concurrent components communicate by exchanging messages ( exemplified by occam ).
