Page 21 - slides.dvi
P. 21

•
                                                          •
                      –
                                 –
                                       –
                                             –
                                                    –
                                                          As
   Operating
               The
                                                          a
                                                                                                               Process
                      Exit:
                                                    New:
                            does)
   Systems
                                       Ready:
   —
                                 Blocked:
                      the
                                             Running:
                                                    the
                                                          process
                                       the
               operating
                                 the
   Processes
                                                                                                               States
                      process
                                                    process
                                       process
               system
                                                    is
                                                          executes,
                                                                                                   New
                                 process
                      has
                                       is
               is
                                             instructions
                                                          it
                                 is
                                             are
                                                    being
                                                                                                     admit
                                       waiting
                      finished
                                                          changes
                                 waiting
                                             being
                                                                                         Ready
                                       for
               responsible
                                                                           event
                                                    created
                                 for
               for
                                       the
                                                          state:
                                                                                or yield
                                                                                  timeout
                                                                                                dispatch
                      execution.
                                 some
                                                                       Blocked
                                             executed
                                       CPU
                                 event
                                                                            event-wait
                                       (and
                                                                                         Running
               maintaining
                                 to
                                       is
                                                                                                     release
               the
                                 occur
                                                                                                   Exit
               state
                                       prepared
                                 (and
               of
                                       to
                                       run
               each
                                 cannot
                                       at
                                 run
                                       any
               process.
                                 until
                                       time)
   17
                                 it
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