OpenASIP  2.0
FUState.icc
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1 /*
2  Copyright (c) 2002-2009 Tampere University.
3 
4  This file is part of TTA-Based Codesign Environment (TCE).
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24 /**
25  * @file FUState.icc
26  *
27  * Inline definition of FUState class.
28  *
29  * @author Pekka Jääskeläinen 2005 (pjaaskel-no.spam-cs.tut.fi)
30  * @note rating: red
31  */
32 
33 /**
34  * Set function unit to triggered state.
35  *
36  * It means that an operation was triggered in the current clock cycle.
37  */
38 inline void
39 FUState::setTriggered() {
40  trigger_ = true;
41  idle_ = false;
42 }
43 
44 /**
45  * Set next triggered operation.
46  *
47  * We do not check that executor for the operation is found, it is left
48  * for client's responsibility. Executor is searched for in endClock().
49  *
50  * @param operation Operation to be triggered next.
51  */
52 inline void
53 FUState::setOperation(Operation& operation) {
54  nextOperation_ = &operation;
55  nextExecutor_ = NULL;
56 }
57 
58 /**
59  * Set next triggered operation.
60  *
61  * Version in which the client has searched in advance the executor to be
62  * used for the operation.
63  *
64  * @param operation Operation to be triggered next.
65  * @param executor The executor to be used.
66  */
67 inline void
68 FUState::setOperation(Operation& operation, OperationExecutor& executor) {
69  nextOperation_ = &operation;
70  nextExecutor_ = &executor;
71 }
72 
73 /**
74  * A function for checking whether the FU is in idle state.
75  *
76  * If an FU is in idle state, its endClock() or advanceClock() need not
77  * be called. This saves some time in simulation loop.
78  *
79  * @return True in case the FU is in idle state, that is, no operations are
80  * pending and there are no operations with clocked state.
81  */
82 inline bool
83 FUState::isIdle() {
84  return idle_ && context().isEmpty();
85 }