| 1 | package de.uka.ipd.sdq.pcmsolver.transformations.pcm2lqn; |
| 2 | |
| 3 | import java.math.BigInteger; |
| 4 | |
| 5 | import org.apache.log4j.Logger; |
| 6 | import org.eclipse.emf.common.util.EList; |
| 7 | |
| 8 | import LqnCore.ActivityPhasesType; |
| 9 | import LqnCore.EntryType; |
| 10 | import LqnCore.PhaseActivities; |
| 11 | import LqnCore.ProcessorType; |
| 12 | import LqnCore.SchedulingType; |
| 13 | import LqnCore.TaskType; |
| 14 | import LqnCore.TypeType; |
| 15 | import de.uka.ipd.sdq.pcm.core.PCMRandomVariable; |
| 16 | import de.uka.ipd.sdq.pcm.resourceenvironment.CommunicationLinkResourceSpecification; |
| 17 | import de.uka.ipd.sdq.pcm.resourceenvironment.LinkingResource; |
| 18 | import de.uka.ipd.sdq.pcm.resourceenvironment.ProcessingResourceSpecification; |
| 19 | import de.uka.ipd.sdq.pcm.resourceenvironment.ResourceContainer; |
| 20 | import de.uka.ipd.sdq.pcm.resourceenvironment.ResourceEnvironment; |
| 21 | import de.uka.ipd.sdq.pcm.resourceenvironment.util.ResourceenvironmentSwitch; |
| 22 | import de.uka.ipd.sdq.pcm.resourcetype.CommunicationLinkResourceType; |
| 23 | import de.uka.ipd.sdq.pcm.resourcetype.ProcessingResourceType; |
| 24 | import de.uka.ipd.sdq.pcmsolver.runconfig.PCMSolverWorkflowRunConfiguration; |
| 25 | import de.uka.ipd.sdq.pcmsolver.transformations.ExpressionToPDFWrapper; |
| 26 | import de.uka.ipd.sdq.pcmsolver.visitors.ExpressionHelper; |
| 27 | |
| 28 | public class ResourceEnvironment2Lqn extends ResourceenvironmentSwitch { |
| 29 | |
| 30 | private static Logger logger = Logger.getLogger(ResourceEnvironment2Lqn.class.getName()); |
| 31 | |
| 32 | private LqnBuilder lqnBuilder; |
| 33 | private PCMSolverWorkflowRunConfiguration config; |
| 34 | |
| 35 | public ResourceEnvironment2Lqn(LqnBuilder aLqnBuilder, PCMSolverWorkflowRunConfiguration aConfig) { |
| 36 | lqnBuilder = aLqnBuilder; |
| 37 | config = aConfig; |
| 38 | } |
| 39 | |
| 40 | @Override |
| 41 | public Object caseCommunicationLinkResourceSpecification( |
| 42 | CommunicationLinkResourceSpecification object) { |
| 43 | LinkingResource lr = (LinkingResource) object.eContainer(); |
| 44 | CommunicationLinkResourceType clrt = object |
| 45 | .getCommunicationLinkResourceType_CommunicationLinkResourceSpecification(); |
| 46 | String id = Pcm2LqnHelper.getIdForCommResource(lr,clrt); |
| 47 | |
| 48 | PCMRandomVariable throughputVariable = object.getThroughput_CommunicationLinkResourceSpecification(); |
| 49 | PCMRandomVariable latencyVariable = object.getLatency_CommunicationLinkResourceSpecification(); |
| 50 | |
| 51 | |
| 52 | if (throughputVariable != null || latencyVariable != null){ |
| 53 | //only handle linking resource if a throughput or latency is specified |
| 54 | |
| 55 | ProcessorType pt = lqnBuilder.addProcessor(id); |
| 56 | pt.setSpeedFactor("1"); |
| 57 | pt.setScheduling(SchedulingType.FCFS); |
| 58 | |
| 59 | TaskType tt = lqnBuilder.addTask(id, pt); |
| 60 | |
| 61 | // Throughput: Create throughput entry that can be called |
| 62 | // for remote external call with bytesize information |
| 63 | // FIXME: Calls to this need to be added with BYTESIZE info. Not yet supported. |
| 64 | if (throughputVariable != null){ |
| 65 | |
| 66 | String throughputID = Pcm2LqnHelper.getIdForThroughput(id); |
| 67 | ActivityPhasesType apt = lqnBuilder.addActivityPhases(throughputID); |
| 68 | PhaseActivities pa = lqnBuilder.addPhaseActivities(apt); |
| 69 | EntryType et = lqnBuilder.addEntry(throughputID, tt); |
| 70 | et.setType(TypeType.NONE); |
| 71 | et.setEntryPhaseActivities(pa); |
| 72 | |
| 73 | // callers must call this task BYTESIZE times, that should make no difference for the LQN mean value analysis |
| 74 | // we could thin about aggregating this to KB or so, but that might cause misunderstandings. |
| 75 | // alternatively, for each call using a BYTESIZE, a new entry of this processor must be created. |
| 76 | double throughputSpeedFactor = 1/ExpressionHelper.getMeanValue(throughputVariable); |
| 77 | apt.setHostDemandMean(""+throughputSpeedFactor); |
| 78 | |
| 79 | //TODO: each external call can create a new entry here with the demand (compare internal actions) |
| 80 | |
| 81 | } |
| 82 | if (latencyVariable != null){ |
| 83 | // careful: calls to the latency are generated only if latency is larger > 0 |
| 84 | |
| 85 | ExpressionToPDFWrapper expToPDF = ExpressionToPDFWrapper.createExpressionToPDFWrapper(latencyVariable.getExpression()); |
| 86 | double latency = expToPDF.getMeanValue(); |
| 87 | |
| 88 | CallType[] callTypes = CallType.values(); |
| 89 | // LQN does not allow to receive synchronous and asynchronous calls at one entry, |
| 90 | // so need to create one entry per call type. |
| 91 | for (int i = 0; i < callTypes.length; i++) { |
| 92 | CallType callType = callTypes[i]; |
| 93 | |
| 94 | String latencyID = Pcm2LqnHelper.getIdForLatency(id, callType); |
| 95 | ActivityPhasesType apt = lqnBuilder.addActivityPhases(latencyID); |
| 96 | PhaseActivities pa = lqnBuilder.addPhaseActivities(apt); |
| 97 | |
| 98 | EntryType et = lqnBuilder.addEntry(latencyID, tt); |
| 99 | et.setType(TypeType.PH1PH2); |
| 100 | et.setEntryPhaseActivities(pa); |
| 101 | |
| 102 | apt.setHostDemandMean(""+latency); |
| 103 | double stdev = expToPDF.getStandardDeviation(); |
| 104 | if (!Double.isNaN(stdev) && latency != 0){ |
| 105 | // squared coefficient of variation |
| 106 | apt.setHostDemandCvsq(""+(stdev*stdev/(latency*latency))); |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | } else { |
| 112 | logger.warn("Found linking resource with neither throughput specification nor latency specification, ignoring it."); |
| 113 | } |
| 114 | |
| 115 | return null; |
| 116 | } |
| 117 | |
| 118 | @Override |
| 119 | public Object caseLinkingResource(LinkingResource object) { |
| 120 | doSwitch(object |
| 121 | .getCommunicationLinkResourceSpecifications_LinkingResource()); |
| 122 | return null; |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public Object caseProcessingResourceSpecification( |
| 127 | ProcessingResourceSpecification object) { |
| 128 | ResourceContainer rc = (ResourceContainer) object.eContainer(); |
| 129 | ProcessingResourceType prt = object |
| 130 | .getActiveResourceType_ActiveResourceSpecification(); |
| 131 | String id = Pcm2LqnHelper.getIdForProcResource(rc, prt); |
| 132 | |
| 133 | ProcessorType pt = lqnBuilder.addProcessor(id); |
| 134 | setSchedulingPolicy(object, pt); |
| 135 | |
| 136 | // The speed of the processing resource is already considered in the resource demands, |
| 137 | // they are calculated in term of tiem spent on the processor. |
| 138 | /*String processingRate = object |
| 139 | .getProcessingRate_ProcessingResourceSpecification() |
| 140 | .getSpecification();*/ |
| 141 | pt.setSpeedFactor("1.0"); |
| 142 | //pt.setMultiplicity(new BigInteger("1")); |
| 143 | pt.setMultiplicity(new BigInteger(""+object.getNumberOfReplicas())); |
| 144 | |
| 145 | // String processingRateSolved = ExpressionHelper.getSolvedExpressionAsString(processingRate, null); |
| 146 | // |
| 147 | // pt.setSpeedFactor(processingRateSolved); |
| 148 | |
| 149 | TaskType tt = lqnBuilder.addTask(id,pt); |
| 150 | ActivityPhasesType apt = lqnBuilder.addActivityPhases(id); |
| 151 | PhaseActivities pa = lqnBuilder.addPhaseActivities(apt); |
| 152 | EntryType et = lqnBuilder.addEntry(id, tt); |
| 153 | et.setType(TypeType.NONE); |
| 154 | et.setEntryPhaseActivities(pa); |
| 155 | |
| 156 | return null; |
| 157 | } |
| 158 | |
| 159 | private void setSchedulingPolicy(ProcessingResourceSpecification object, |
| 160 | ProcessorType pt) { |
| 161 | switch (object.getSchedulingPolicy()) { |
| 162 | case FCFS: |
| 163 | pt.setScheduling(SchedulingType.FCFS); |
| 164 | break; |
| 165 | case DELAY: |
| 166 | // The SchedulingType.INF has been added manually to the generated code, so |
| 167 | // there may appear a compile error here if the LQN code is regenerated again. |
| 168 | // I purposefully did not set it to "generated not" so that this problem is |
| 169 | // brought to attention whenever the model is regenerated |
| 170 | // However, if the model is successfully regenerated from the LQN version 4.3 or later XML schema |
| 171 | // the inf value should be available in the generated code and this note can be deleted. |
| 172 | pt.setScheduling(SchedulingType.INF); |
| 173 | break; |
| 174 | case PROCESSOR_SHARING: |
| 175 | pt.setScheduling(SchedulingType.PS); |
| 176 | pt.setQuantum(config.getPsQuantum()); |
| 177 | break; |
| 178 | default : |
| 179 | logger.warn("Unknown scheduling strategy " |
| 180 | + object.getSchedulingPolicy().getName() |
| 181 | + ", using PROCESSOR_SHARING for " |
| 182 | + object |
| 183 | .getActiveResourceType_ActiveResourceSpecification() |
| 184 | .getEntityName() |
| 185 | + " of server " |
| 186 | + object |
| 187 | .getResourceContainer_ProcessingResourceSpecification() |
| 188 | .getEntityName() |
| 189 | + " (id: " |
| 190 | + object |
| 191 | .getResourceContainer_ProcessingResourceSpecification() |
| 192 | .getId() + ")"); |
| 193 | pt.setScheduling(SchedulingType.PS); |
| 194 | pt.setQuantum(config.getPsQuantum()); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | @Override |
| 199 | public Object caseResourceContainer(ResourceContainer object) { |
| 200 | EList<ProcessingResourceSpecification> procResList = object |
| 201 | .getActiveResourceSpecifications_ResourceContainer(); |
| 202 | for (ProcessingResourceSpecification prs : procResList) { |
| 203 | doSwitch(prs); |
| 204 | } |
| 205 | return null; |
| 206 | } |
| 207 | |
| 208 | @Override |
| 209 | public Object caseResourceEnvironment(ResourceEnvironment object) { |
| 210 | EList<ResourceContainer> resConList = object |
| 211 | .getResourceContainer_ResourceEnvironment(); |
| 212 | for (ResourceContainer rc : resConList) { |
| 213 | doSwitch(rc); //TODO |
| 214 | } |
| 215 | |
| 216 | EList<LinkingResource> linkResList = object.getLinkingResources__ResourceEnvironment(); |
| 217 | for (LinkingResource lr : linkResList) { |
| 218 | doSwitch(lr); |
| 219 | } |
| 220 | |
| 221 | return null; |
| 222 | } |
| 223 | |
| 224 | } |