Package org.jacop.jasat.modules

Class StatModule

java.lang.Object
org.jacop.jasat.modules.StatModule
All Implemented Interfaces:
SolverComponent, AssertionListener, BackjumpListener, ClauseListener, ConflictListener, ForgetListener, PropagateListener, StartStopListener
public final class StatModule extends Object implements AssertionListener, BackjumpListener, ConflictListener, ForgetListener, ClauseListener, PropagateListener, StartStopListener
collects statistics about the solver
Version:
4.10

  • Field Details

    • core

      private Core core

    • numRestarts

      private long numRestarts

    • numConflicts

      private long numConflicts

    • numBackjumps

      private long numBackjumps

    • numAssertions

      private long numAssertions

    • numForget

      private long numForget

    • numClauseAdd

      private long numClauseAdd

    • numLearntClauses

      private long numLearntClauses

    • numClauseRemoved

      private long numClauseRemoved

    • numPropagate

      private long numPropagate

    • threaded

      private final boolean threaded

    • task

      private TimerTask task

  • Constructor Details

    • StatModule

      public StatModule(boolean threaded)
      Create a StatModule. It can schedule
      Parameters:
      threaded - true if threaded

  • Method Details

    • onRestart

      public void onRestart(int oldLevel)
      Description copied from interface: BackjumpListener
      called when the solver restarts.

      components that want to be warned about restarts should put themselves in Core.restartModules.

      Specified by:
      onRestart in interface BackjumpListener
      Parameters:
      oldLevel - the level at which the solver was before restarting

    • onConflict

      public void onConflict(MapClause clause, int level)
      Description copied from interface: ConflictListener
      called when a conflict occurs
      Specified by:
      onConflict in interface ConflictListener
      Parameters:
      clause - the conflict (unsatisfiable) clause
      level - the level at which the conflict occurred

    • onBackjump

      public void onBackjump(int oldLevel, int newLevel)
      Description copied from interface: BackjumpListener
      Called when the solver backtracks. It will also be called when the solver restarts.

      components that want to be warned about backjumps should put themselves in Core.backjumpModules.

      Specified by:
      onBackjump in interface BackjumpListener
      Parameters:
      oldLevel - the level at which the solver was before backtracking
      newLevel - the level to which the solver backtracks

    • onAssertion

      public void onAssertion(int literal, int level)
      Description copied from interface: AssertionListener
      Called when a variable is set
      Specified by:
      onAssertion in interface AssertionListener
      Parameters:
      literal - the literal that is set propagation, false otherwise
      level - the search level

    • onForget

      public void onForget()
      Description copied from interface: ForgetListener
      called when the solver's forget() method is applied.
      Specified by:
      onForget in interface ForgetListener

    • onPropagate

      public void onPropagate(int literal, int clauseId)
      Description copied from interface: PropagateListener
      called when a propagation occurs
      Specified by:
      onPropagate in interface PropagateListener
      Parameters:
      literal - the literal propagated
      clauseId - the unique ID of the unit clause

    • onClauseAdd

      public void onClauseAdd(int[] clause, int clauseId, boolean isModelClause)
      Description copied from interface: ClauseListener
      called when the given clause is added.
      Specified by:
      onClauseAdd in interface ClauseListener
      Parameters:
      clause - the clause
      clauseId - the clause's unique Id
      isModelClause - is this clause a model clause ?

    • onClauseRemoval

      public void onClauseRemoval(int clauseId)
      Description copied from interface: ClauseListener
      called when the clause with unique Id @param clauseId is removed
      Specified by:
      onClauseRemoval in interface ClauseListener
      Parameters:
      clauseId - the id

    • onStop

      public void onStop()
      Description copied from interface: StartStopListener
      called when the solver stop search, for any reason
      Specified by:
      onStop in interface StartStopListener

    • onStart

      public void onStart()
      Description copied from interface: StartStopListener
      called when the solver starts search. It will be called only once.
      Specified by:
      onStart in interface StartStopListener

    • logStats

      public final void logStats()
      print current stats with solver's logc2 method

    • logStat

      private final void logStat(String stat, long num, long timeDiff)
      logs one line of stat (for one parameter)

    • printLine

      private void printLine(boolean start)
      prints a line, starting a block if @param start is true, ending the block otherwise

    • printBlank

      private void printBlank()

    • initialize

      public void initialize(Core core)
      Description copied from interface: SolverComponent
      initializes the component with the given solver. May be called only once. This method must register the component to the solver for the run.
      Specified by:
      initialize in interface SolverComponent
      Parameters:
      core - core component to initialize