| /******************************************************************************* |
| * Copyright (c) 2019 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.tests.internal.resources; |
| |
| import java.io.ByteArrayInputStream; |
| import junit.framework.TestCase; |
| import org.eclipse.core.internal.resources.Workspace; |
| import org.eclipse.core.resources.*; |
| import org.eclipse.core.runtime.*; |
| |
| /** |
| * A benchmark for bug 552185. |
| * |
| * Not included in actual tests, since performance is only printed and not |
| * asserted. |
| */ |
| public class Bug552185PerformanceTest extends TestCase { |
| |
| public void testBug552185Performance() throws Exception { |
| // run inside a WorkspaceJob, in case there are listeners on workspace changes |
| WorkspaceJob testJob = new WorkspaceJob(Bug552185PerformanceTest.class.getName()) { |
| @Override |
| public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException { |
| if (monitor.isCanceled()) { |
| return Status.CANCEL_STATUS; |
| } |
| try { |
| runBenchmark(monitor); |
| } catch (CoreException e) { |
| return new Status(IStatus.ERROR, ResourcesPlugin.PI_RESOURCES, "Benchmark failed.", e); |
| } |
| |
| return Status.OK_STATUS; |
| } |
| |
| }; |
| testJob.schedule(); |
| testJob.join(); |
| } |
| |
| static void runBenchmark(IProgressMonitor monitor) throws CoreException { |
| runBenchmark(1, 10_000, monitor); // 1 directory with 10k files |
| runBenchmark(10_000, 1, monitor); // 10k directories with 1 file each |
| runBenchmark(10, 1_000, monitor); // 10 directories with 1k files each |
| runBenchmark(1, 100_000, monitor); // 1 directory with 100k files |
| runBenchmark(100_000, 1, monitor); // 100k directories with 1 file each |
| } |
| |
| static void runBenchmark(int directoriesCount, int fileCountPerDirectory, IProgressMonitor monitor) |
| throws CoreException { |
| Workspace workspace = (Workspace) ResourcesPlugin.getWorkspace(); |
| IWorkspaceRoot root = workspace.getRoot(); |
| boolean local = false; |
| |
| IProject project = root.getProject("TestBug552185ResourcesIO"); |
| |
| try { |
| project.create(monitor); |
| project.open(monitor); |
| System.out.println( |
| "Creating " + directoriesCount + " directories with " + fileCountPerDirectory + " files each"); |
| long start = System.currentTimeMillis(); |
| |
| SubMonitor subMonitor = SubMonitor.convert(monitor, directoriesCount); |
| for (int i = 0; i < directoriesCount; ++i) { |
| IFolder folder = project.getFolder("folder" + i); |
| SubMonitor subMonitor2 = SubMonitor.convert(subMonitor, "Creating directory " + folder.getName(), |
| fileCountPerDirectory); |
| folder.create(IResource.FORCE, local, subMonitor); |
| for (int j = 0; j < fileCountPerDirectory; ++j) { |
| subMonitor2.checkCanceled(); |
| IFile file = folder.getFile("file" + j); |
| String content = "file content " + j; |
| ByteArrayInputStream contentStream = new ByteArrayInputStream(content.getBytes()); |
| file.create(contentStream, IResource.FORCE, subMonitor2); |
| subMonitor2.worked(1); |
| } |
| subMonitor.worked(1); |
| } |
| subMonitor.done(); |
| |
| long end = System.currentTimeMillis(); |
| long elapsed = end - start; |
| System.out.println("Elapsed: " + elapsed + " ms"); |
| } finally { |
| if (project.exists()) { |
| project.delete(IResource.FORCE, monitor); |
| } |
| } |
| } |
| } |