OperationExecutor.hh

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/*
    Copyright (c) 2002-2010 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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    copy of this software and associated documentation files (the "Software"),
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/**
 * @file OperationExecutor.hh
 *
 * Declaration of OperationExecutor class.
 *
 * @author Jussi Nykänen 2004 (nykanen-no.spam-cs.tut.fi)
 * @author Pekka Jääskeläinen 2006,2010 (pjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#ifndef TTA_OPERATION_EXECUTOR_HH
#define TTA_OPERATION_EXECUTOR_HH
 
#include <vector>
#include "Exception.hh"
 
class SimValue;
class Operation;
class FUState;
class PortState;
class OperationContext;
 
/**
 * Executes operations in function units.
 */
class OperationExecutor {
public:
    OperationExecutor() : hasPendingOperations_(false), parent_(NULL) {}
    explicit OperationExecutor(FUState& parent);
    virtual ~OperationExecutor();
 
    FUState& parent() const;
    void setParent(FUState& parent) { parent_ = &parent; }
 
    void addBinding(int io, PortState& port);
    PortState& binding(int io) const;
 
    virtual void startOperation(Operation& op) = 0;
    bool hasPendingOperations() const;
    virtual void advanceClock() = 0;
    virtual OperationExecutor* copy() = 0;
    virtual void setContext(OperationContext& context) = 0;
    virtual void reset();
 
protected:
    /// PortStates that are bound to a certain input or output operand.
    std::vector<PortState*> bindings_;
    /// This is set to true if the OperationExecutor is not in 'idle'
    /// mode.
    bool hasPendingOperations_;
private:
    /// Assignment not allowed.
    OperationExecutor& operator=(const OperationExecutor&);
 
    /// Parent of the executor.
    FUState* parent_;
};
 
/// Maximum count of operation operands supported by the executors.
/// This is used to allocate some static arrays, etc.
#define EXECUTOR_MAX_OPERAND_COUNT 512
 
#include "OperationExecutor.icc"
 
#endif