Add isGpuEquipped method to GpuHost

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/gpu/GpuHost.java

@@ -76,7 +76,7 @@ public class GpuHost extends Host {
 	@Override
 	public boolean isSuitableForVm(Vm vm) {
 		boolean result = vmCreate(vm);
-		if(result) {
+		if (result) {
 			vmDestroy(vm);
 		}
 		return result;
@@ -103,7 +103,7 @@ public class GpuHost extends Host {
 	 * @return
 	 */
 	public boolean hasVideoCard(int videoCardId) {
-		if (getVideoCardAllocationPolicy() == null || getVideoCardAllocationPolicy().getVideoCards().isEmpty()) {
+		if (!isGpuEquipped()) {
 			return false;
 		}
 		for (VideoCard videoCard : getVideoCardAllocationPolicy().getVideoCards()) {
@@ -121,7 +121,7 @@ public class GpuHost extends Host {
 	 * @return
 	 */
 	public boolean hasPgpu(int pgpuId) {
-		if (getVideoCardAllocationPolicy() == null || getVideoCardAllocationPolicy().getVideoCards().isEmpty()) {
+		if (!isGpuEquipped()) {
 			return false;
 		}
 		for (VideoCard videoCard : getVideoCardAllocationPolicy().getVideoCards()) {
@@ -134,6 +134,10 @@ public class GpuHost extends Host {
 		return false;
 	}
 
+	public boolean isGpuEquipped() {
+		return getVideoCardAllocationPolicy() != null && !getVideoCardAllocationPolicy().getVideoCards().isEmpty();
+	}
+
 	public void vgpuDestroy(Vgpu vgpu) {
 		if (vgpu != null) {
 			getVideoCardAllocationPolicy().deallocate(vgpu);
@@ -163,9 +167,7 @@ public class GpuHost extends Host {
 	}
 
 	public Set<Vgpu> getVgpuSet() {
-		if (getVideoCardAllocationPolicy() == null) {
-			return null;
-		} else if (getVideoCardAllocationPolicy().getVideoCards().isEmpty()) {
+		if (!isGpuEquipped()) {
 			return null;
 		}
 		return getVideoCardAllocationPolicy().getVgpuVideoCardMap().keySet();

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/gpu/GpuVmAllocationPolicy.java

@@ -149,8 +149,7 @@ public abstract class GpuVmAllocationPolicy extends VmAllocationPolicy {
 	protected void setGpuHostList(List<GpuHost> gpuHostList) {
 		this.gpuHostList = new ArrayList<GpuHost>();
 		for (GpuHost host : gpuHostList) {
-			if (host.getVideoCardAllocationPolicy() != null
-					&& !host.getVideoCardAllocationPolicy().getVideoCards().isEmpty()) {
+			if (host.isGpuEquipped()) {
 				getGpuHostList().add(host);
 			}
 		}

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/gpu/hardware_assisted/grid/GridGpuVmAllocationPolicyBestFit.java

@@ -43,8 +43,7 @@ public class GridGpuVmAllocationPolicyBestFit extends GpuVmAllocationPolicy {
 		// Create nonGpuHost list
 		for (Host host : list) {
 			GpuHost pm = (GpuHost) host;
-			if (pm.getVideoCardAllocationPolicy() == null
-					|| pm.getVideoCardAllocationPolicy().getVideoCards().isEmpty()) {
+			if (!pm.isGpuEquipped()) {
 				nonGpuHostList.add(pm);
 			}
 		}