DCMFUResourceConflictDetector.cc

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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/**
 * @file DCMFUResourceConflictDetector.cc
 *
 * Definition of DCMFUResourceConflictDetector class.
 *
 * @author Pekka Jääskeläinen 2007 (pjaaskel-no.spam-cs.tut.fi)
 * @note rating: red
 */
 
#include "DCMFUResourceConflictDetector.hh"
#include "StringTools.hh"
#include "FunctionUnit.hh"
#include "HWOperation.hh"
#include "FUReservationTableIndex.hh"
#include "FUCollisionMatrixIndex.hh"
#include "TCEString.hh"
 
/**
 * Constructor.
 *
 * @param fu The function unit to detect conflicts for.
 * @exception InvalidData If the model could not be built from the given FU.
 */
DCMFUResourceConflictDetector::DCMFUResourceConflictDetector(
    const TTAMachine::FunctionUnit& fu)
    : collisionMatrices_(fu),
      globalCollisionMatrix_(
          collisionMatrices_.at(0).columnCount(),
          collisionMatrices_.at(0).rowCount(), false),
      fu_(fu) {}
 
/**
 * Destructor.
 */
DCMFUResourceConflictDetector::
~DCMFUResourceConflictDetector() {
}
 
/**
 * Issues an operation and reports a conflict if detected.
 *
 * @param id The id of the operation to issue.
 * @return False in case a conflict is detected, otherwise true.
 */
bool
DCMFUResourceConflictDetector::issueOperation(OperationID id) {
    return issueOperationInline(id);
}
 
/**
 * Simulates a cycle advance and reports a conflict if detected.
 *
 * @return False in case a conflict is detected, otherwise true.
 */
bool
DCMFUResourceConflictDetector::advanceCycle() {
    return advanceCycleInline();
}
 
/**
 * Returns an operation id for the given operation.
 *
 * Operation IDs are used in the interface for optimizing the access. This
 * method converts OSAL Operations to operation IDs. 
 *
 * @param operation The OSAL Operation to find ID for.
 * @return The operation ID.
 */
DCMFUResourceConflictDetector::OperationID 
DCMFUResourceConflictDetector::operationID(
    const TCEString& operationName) const {
 
    // find the index of the operation in the FU, it corresponds to the
    // operation ID
    for (int i = 0; i < fu_.operationCount(); ++i) {
        if (StringTools::ciEqual(fu_.operation(i)->name(), operationName)) {
            return i;
        }
    }
    throw KeyNotFound(__FILE__, __LINE__, __func__, "Operation not found.");
}
 
/**
 * Sets the state of the detector to its initial state.
 *
 * This means that the FU state is assumed to be what it is in powerup.
 */
void
DCMFUResourceConflictDetector::reset() {
    globalCollisionMatrix_.setAllToZero();
}