src/GraphExecutor/DataFlowExecutor_FiniteStateMachine.hxx

   1 //  SUPERV GraphExecutor : contains classes that permit execution of graphs and particularly the execution automaton
   2 //
   3 //  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 //  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   6 //  This library is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU Lesser General Public
   8 //  License as published by the Free Software Foundation; either
   9 //  version 2.1 of the License.
  10 //
  11 //  This library is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 //  Lesser General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU Lesser General Public
  17 //  License along with this library; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 //
  20 //  See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
  21 //
  22 //
  23 //
  24 //  File   : DataFlowBase_FiniteStateMachine.hxx
  25 //  Author : Jean Rahuel, CEA
  26 //  Module : SUPERV
  27 //  $Header:
  28
  29 #ifndef _DATAFLOWEXECUTOR_FINITESTATEMACHINE
  30 #define _DATAFLOWEXECUTOR_FINITESTATEMACHINE
  31
  32 #include <stdlib.h>
  33 #include <iostream>
  34 #include <unistd.h>
  35 #include <stdio.h>
  36
  37 #include "DataFlowBase_Base.hxx"
  38
  39 #include <SALOMEconfig.h>
  40 //#include CORBA_SERVER_HEADER(SUPERV)
  41 #include <SALOME_LifeCycleCORBA.hxx>
  42
  43 namespace GraphExecutor {
  44
  45   enum NodeEvent { UndefinedEvent , NewThreadEvent ,
  46                      SuspendEvent , ToResumeEvent  , ResumeEvent ,
  47                      KillEvent , StopEvent ,
  48                      ExecuteEvent , SuccessEvent , ErrorEvent ,
  49                      ToReStartEvent , ReStartEvent , ReStartAndSuspendEvent ,
  50                      EndExecuteEvent ,
  51                    NoDataReadyEvent , SomeDataReadyEvent ,
  52                    NotAllDataReadyEvent , AllDataReadyEvent ,
  53                      ReadyEvent , SuspendedReadyEvent ,ResumedReadyEvent ,
  54                      KilledReadyEvent , StoppedReadyEvent ,
  55                    ExecutingEvent , SuspendedExecutingEvent ,
  56                    ResumedExecutingEvent , KilledExecutingEvent ,
  57                    StoppedExecutingEvent ,
  58                      SuccessedExecutingEvent , ErroredExecutingEvent ,
  59                      SuspendedSuccessedEvent , SuspendedErroredEvent ,
  60                      ResumedSuccessedEvent , ResumedErroredEvent ,
  61                      KilledEvent , StoppedEvent ,
  62                    ReStartedEvent , ReStartedAndSuspendEvent ,
  63                      NumberOfEvents } ;
  64
  65   enum StateEventAction { ErrorAction ,
  66                           VoidAction ,
  67                           executeAction , // +- pthread_create
  68                           ExecuteAction , // +- pthread_create
  69                             DataWaiting_SomeDataReadyAction ,
  70                             DataUndef_NotAllDataReadyAction ,
  71                             DataUndef_AllDataReadyAction ,
  72                           DataReady_SuspendAction ,
  73                           SuspendedReady_ResumeAction ,
  74                           DataReady_KillAction ,
  75                           DataReady_StopAction ,
  76                             DataReady_ExecuteAction ,
  77                           Executing_SuspendAction ,
  78                           SuspendedExecuting_ResumeAction ,
  79                           Executing_KillAction ,
  80                           Executing_StopAction ,
  81                             Executing_SuccessAction ,
  82                             Executing_ErrorAction ,
  83                           Successed_SuccessAction ,
  84                           Errored_ErrorAction ,
  85                           Successed_SuspendAction ,
  86                           Errored_SuspendAction ,
  87                           SuspendedSuccessed_ResumeAction ,
  88                           SuspendedErrored_ResumeAction ,
  89                           Successed_KillAction ,
  90                           Errored_KillAction ,
  91                           Successed_StopAction ,
  92                           Errored_StopAction ,
  93                             SuspendedSuccessed_ReStartAction ,
  94                             SuspendedErrored_ReStartAction ,
  95                             SuspendedSuccessed_ReStartAndSuspendAction ,
  96                             SuspendedErrored_ReStartAndSuspendAction ,
  97                           NumberOfActions } ;
  98
  99   class FiniteStateMachine {
 100
 101     private :
 102
 103       char *              _ControlStateName[ SUPERV::NumberOfControlStates ] ;
 104       char *              _StateName[ SUPERV::NumberOfAutomatonStates ] ;
 105       char *              _GraphStateName[ SUPERV::NumberOfGraphStates ] ;
 106       char *              _EventName[ GraphExecutor::NumberOfEvents ] ;
 107       char *              _ActionName[ NumberOfActions ] ;
 108       SUPERV::AutomatonState _TransitionTable[ SUPERV::NumberOfAutomatonStates ]
 109                                           [ GraphExecutor::NumberOfEvents ] ;
 110       GraphExecutor::StateEventAction _ActionTable[ SUPERV::NumberOfAutomatonStates ]
 111                                                   [ GraphExecutor::NumberOfEvents ] ;
 112
 113       bool              _JoinThread ;
 114       pthread_t         _JoinThreadNo ;
 115       pthread_mutex_t   _MutexJoinWait ;
 116       pthread_cond_t    _JoinWait ;
 117       list< pthread_t > _ThreadList ;
 118
 119     public :
 120
 121       FiniteStateMachine() ;
 122       virtual ~FiniteStateMachine() {} ;
 123
 124       void JoinThread() ;
 125       void JoinThread( pthread_t aThread ) ;
 126
 127       const char * ControlStateName(
 128             const SUPERV::ControlState & aState ) const {
 129             return _ControlStateName[ aState ] ; } ;
 130       const char * StateName(
 131             const SUPERV::AutomatonState & aState ) const {
 132             return _StateName[ aState ] ; } ;
 133       const char * StateName(
 134             const SUPERV::GraphState & aState ) const {
 135             return _GraphStateName[ aState ] ; } ;
 136       const char * EventName(
 137             const GraphExecutor::NodeEvent & anEvent ) const {
 138             return _EventName[ anEvent ] ; } ;
 139       const char * ActionName(
 140             const GraphExecutor::StateEventAction & anAction ) const {
 141             return _ActionName[ anAction ] ; } ;
 142
 143       const SUPERV::AutomatonState NextState(
 144             const SUPERV::AutomatonState & aState ,
 145             const GraphExecutor::NodeEvent & anEvent ) const {
 146             return _TransitionTable[ aState ][ anEvent ] ; } ;
 147
 148       const GraphExecutor::StateEventAction NextAction(
 149             const SUPERV::AutomatonState & aState ,
 150             const GraphExecutor::NodeEvent & anEvent ) const {
 151             return _ActionTable[ aState ][ anEvent ] ; } ;
 152   };
 153
 154 };
 155
 156 #endif