FUState.icc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
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/**
 * @file FUState.icc
 *
 * Inline definition of FUState class.
 *
 * @author Pekka Jääskeläinen 2005 (pjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
/**
 * Set function unit to triggered state.
 *
 * It means that an operation was triggered in the current clock cycle.
 */
inline void
FUState::setTriggered() {
    trigger_ = true;
    idle_ = false;
}
 
/**
 * Set next triggered operation.
 *
 * We do not check that executor for the operation is found, it is left
 * for client's responsibility. Executor is searched for in endClock().
 *
 * @param operation Operation to be triggered next.
 */
inline void
FUState::setOperation(Operation& operation) {
    nextOperation_ = &operation;
    nextExecutor_ = NULL;
}
 
/**
 * Set next triggered operation.
 *
 * Version in which the client has searched in advance the executor to be 
 * used for the operation.
 *
 * @param operation Operation to be triggered next.
 * @param executor The executor to be used.
 */
inline void
FUState::setOperation(Operation& operation, OperationExecutor& executor) {
    nextOperation_ = &operation;
    nextExecutor_ = &executor;
}
 
/**
 * A function for checking whether the FU is in idle state.
 *
 * If an FU is in idle state, its endClock() or advanceClock() need not
 * be called. This saves some time in simulation loop.
 *
 * @return True in case the FU is in idle state, that is, no operations are
 *         pending and there are no operations with clocked state.
 */
inline bool
FUState::isIdle() {
    return idle_ && context().isEmpty();
}