/*

 * Ensures that the performance of reconcile on a CU with lots of duplicates is acceptable.

 * (regression test for bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=135906 )

 */

public void testReconcileDuplicates() throws JavaModelException {

	tagAsSummary("Reconcile editor change on file with lots of duplicates", false); // do NOT put in fingerprint

	// build big file contents

	StringBuffer contents = new StringBuffer();

	contents.append("public class CUWithDuplicates {\n");

	int fooIndex = 0;

	while (fooIndex < 2000) { // add 2000 duplicate methods

		contents.append("  void foo() {}\n");

		contents.append(fooIndex++);

	}

	contents.append("} //"); // ensure it ends with a line comment that is edited below

	ICompilationUnit workingCopy = null;

	try {

		// Setup

		workingCopy = (ICompilationUnit) JavaCore.create(ResourcesPlugin.getWorkspace().getRoot().getFile(new Path("/BigProject/src/CUWithDuplicates.java")));

		workingCopy.becomeWorkingCopy(null);

		// Warm up

		int warmup = WARMUP_COUNT / 10;

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

			workingCopy.getBuffer().setContents(contents.append('a').toString());

			workingCopy.reconcile(AST.JLS3, false/*no pb detection*/, null/*no owner*/, null/*no progress*/);

		}

		// Measures

		resetCounters();

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

			workingCopy.getBuffer().setContents(contents.append('a').toString());

			runGc();

			startMeasuring();

			workingCopy.reconcile(AST.JLS3, false/*no pb detection*/, null/*no owner*/, null/*no progress*/);

			stopMeasuring();

		}

		// Commit

		commitMeasurements();

		assertPerformance();		

	} finally {

		if (workingCopy != null)

			workingCopy.discardWorkingCopy();

	}

}

import org.eclipse.jdt.internal.compiler.util.HashtableOfObjectToInt;

	/*

	 * A table from a handle (with occurenceCount == 1) to the current occurence count for this handle

	 */

	private HashtableOfObjectToInt occurenceCounts;

	this.occurenceCounts = new HashtableOfObjectToInt();