Relocate power and placement events

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/gpu/placement/GpuDatacenterEx.java

@@ -14,8 +14,6 @@ import org.cloudbus.cloudsim.VmAllocationPolicy;
 import org.cloudbus.cloudsim.core.CloudSim;
 import org.cloudbus.cloudsim.core.CloudSimTags;
 import org.cloudbus.cloudsim.core.SimEvent;
-import org.cloudbus.cloudsim.core.predicates.PredicateType;
-import org.cloudbus.cloudsim.gpu.GpuDatacenter;
 import org.cloudbus.cloudsim.gpu.GpuVm;
 import org.cloudbus.cloudsim.gpu.GpuVmAllocationPolicy;
 import org.cloudbus.cloudsim.gpu.Vgpu;
@@ -59,13 +57,9 @@ public class GpuDatacenterEx extends PowerGpuDatacenter {
 	}
 	
 	@Override
-	public void processEvent(SimEvent ev) {
-		// if this is the first time processing happens
-		if (CloudSim.clock() == 0.0
-				&& CloudSim.select(getId(), new PredicateType(GpuCloudSimTags.GPU_VM_DATACENTER_PLACEMENT)) == null) {
+	public void startEntity() {
 		schedule(getId(), getSchedulingInterval(), GpuCloudSimTags.GPU_VM_DATACENTER_PLACEMENT);
-		}
-		super.processEvent(ev);
+		super.startEntity();
 	}
 
 	@Override

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/gpu/power/PowerGpuDatacenter.java

@@ -9,9 +9,7 @@ import org.cloudbus.cloudsim.DatacenterCharacteristics;
 import org.cloudbus.cloudsim.Host;
 import org.cloudbus.cloudsim.Storage;
 import org.cloudbus.cloudsim.VmAllocationPolicy;
-import org.cloudbus.cloudsim.core.CloudSim;
 import org.cloudbus.cloudsim.core.SimEvent;
-import org.cloudbus.cloudsim.core.predicates.PredicateType;
 import org.cloudbus.cloudsim.gpu.GpuDatacenter;
 import org.cloudbus.cloudsim.gpu.VideoCard;
 import org.cloudbus.cloudsim.gpu.allocation.VideoCardAllocationPolicy;
@@ -94,13 +92,9 @@ public class PowerGpuDatacenter extends GpuDatacenter {
 	}
 	
 	@Override
-	public void processEvent(SimEvent ev) {
-		// if this is the first time processing happens
-		if (CloudSim.clock() == 0.0
-				&& CloudSim.select(getId(), new PredicateType(GpuCloudSimTags.GPU_VM_DATACENTER_POWER_EVENT)) == null) {
+	public void startEntity() {
 		schedule(getId(), getSchedulingInterval(), GpuCloudSimTags.GPU_VM_DATACENTER_POWER_EVENT);
-		}
-		super.processEvent(ev);
+		super.startEntity();
 	}
 
 	@Override