import org.eclipse.core.resources.IWorkspaceRunnable;

/*

 * Ensures that the performance of reconcile after creating a package fragment in a batch operation is acceptable

 * (regression test for bug 234718 JarPackageFragmentRoot.computeChildren(..) is slow )

 */

public void testPerfBatchCreatePackageAndReconcile() throws CoreException {

	tagAsSummary("Reconcile editor change after creating a package fragment in a batch operation", false); // do NOT put in fingerprint

	IJavaProject project = null;

	try {

		project = createJavaProject("P234718");

		IFile bigJar1 = BIG_PROJECT.getProject().getFile(BIG_JAR1_NAME);

		IFile bigJar2 = BIG_PROJECT.getProject().getFile(BIG_JAR2_NAME);

		project.setRawClasspath(

			new IClasspathEntry[] {

				JavaCore.newSourceEntry(project.getPath()),

				JavaCore.newLibraryEntry(bigJar1.getFullPath(), null, null),

				JavaCore.newLibraryEntry(bigJar2.getFullPath(), null, null),

			}, null);

		final IPackageFragmentRoot root = project.getPackageFragmentRoot(project.getProject());

		ICompilationUnit workingCopy  = root.getPackageFragment("").createCompilationUnit(

			"X.java", 

			"public class  {\n" +

			"}"

			, false, null);

		workingCopy.becomeWorkingCopy(null);

		AbstractJavaModelTests.waitUntilIndexesReady();

		AbstractJavaModelTests.waitForAutoBuild();

		// Warm up

		try {

			final ICompilationUnit copy = workingCopy;

			IWorkspaceRunnable runnable = new IWorkspaceRunnable(){

				public void run(IProgressMonitor monitor) throws CoreException {

					root.createPackageFragment("p2", false/*don't force*/, monitor);

					copy.reconcile(AST.JLS3, true, null, monitor);

					int warmup = WARMUP_COUNT / 5;

					for (int i=0; i<warmup; i++) {

						copy.reconcile(AST.JLS3, true, null, monitor);

					}

				}

			};

			try {

				JavaCore.run(runnable, null);

			} finally {

				root.getPackageFragment("p2").delete(false/*don't force*/, null);

			}

			// Measures

			resetCounters();

			runnable = new IWorkspaceRunnable(){

				public void run(IProgressMonitor monitor) throws CoreException {

					root.createPackageFragment("p2", false/*don't force*/, monitor);

					copy.reconcile(AST.JLS3, true, null, monitor);

					int iterations = 10;

					startMeasuring();

					for (int n=0; n<iterations; n++) {

						copy.reconcile(AST.JLS3, true, null, monitor);

					}

					stopMeasuring();

				}

			};

			for (int i=0; i<MEASURES_COUNT; i++) {

				runGc();

				try {

					JavaCore.run(runnable, null);

				} finally {

					root.getPackageFragment("p2").delete(false/*don't force*/, null);

				}

			}

		}

		finally {

			workingCopy.discardWorkingCopy();

		}

		// Commit

		commitMeasurements();

		assertPerformance();

	} finally {

		if (project != null)

			project.getProject().delete(true, null);

	}

}