3 import static org.testng.Assert.assertEquals;
4 import static org.testng.Assert.assertNotNull;
5 import static org.testng.Assert.assertTrue;
7 import jalview.analysis.AlignmentGenerator;
8 import jalview.bin.Cache;
9 import jalview.bin.Instance;
10 import jalview.bin.Jalview;
11 import jalview.datamodel.AlignmentI;
12 import jalview.datamodel.SequenceGroup;
13 import jalview.io.DataSourceType;
14 import jalview.io.FileLoader;
16 import java.awt.event.MouseEvent;
18 import java.io.IOException;
19 import java.io.PrintStream;
21 import org.testng.annotations.BeforeClass;
22 import org.testng.annotations.Test;
24 import junit.extensions.PA;
26 public class FreeUpMemoryTest
28 private static final int ONE_MB = 1000 * 1000;
31 * Configure (read-only) Jalview property settings for test
33 @BeforeClass(alwaysRun = true)
36 Jalview.main(new String[] { "-nonews", "-props",
37 "test/jalview/testProps.jvprops" });
38 String True = Boolean.TRUE.toString();
39 Cache.setPropertyNoSave("SHOW_ANNOTATIONS", True);
40 Cache.setPropertyNoSave("SHOW_QUALITY", True);
41 Cache.setPropertyNoSave("SHOW_CONSERVATION", True);
42 Cache.setPropertyNoSave("SHOW_OCCUPANCY", True);
43 Cache.setPropertyNoSave("SHOW_IDENTITY", True);
47 * A simple test that memory is released when all windows are closed.
49 * <li>generates a reasonably large alignment and loads it</li>
50 * <li>performs various operations on the alignment</li>
51 * <li>closes all windows</li>
52 * <li>requests garbage collection</li>
53 * <li>asserts that the remaining memory footprint (heap usage) is 'not large'
56 * If the test fails, this suggests that a reference to some large object
57 * (perhaps the alignment data, or some annotation / Tree / PCA data) has
58 * failed to be garbage collected. If this is the case, the heap will need to
59 * be inspected manually (suggest using jvisualvm) in order to track down
60 * where large objects are still referenced. The code (for example
61 * AlignmentViewport.dispose()) should then be updated to ensure references to
62 * large objects are set to null when they are no longer required.
66 @Test(groups = "Memory")
67 public void testFreeMemoryOnClose() throws IOException
69 File f = generateAlignment();
74 Instance.getDesktop().closeAll_actionPerformed(null);
80 * Requests garbage collection and then checks whether remaining memory in use
81 * is less than the expected value (in Megabytes)
85 protected void checkUsedMemory(long expectedMax)
88 * request garbage collection and wait for it to run;
89 * NB there is no guarantee when, or whether, it will do so
90 * wait time depends on JRE/processor, generous allowance here
96 * a second gc() call should not be necessary - but it is!
97 * the test passes with it, and fails without it
103 * check used memory is 'reasonably low'
105 long availableMemory = Runtime.getRuntime().totalMemory() / ONE_MB;
106 long freeMemory = Runtime.getRuntime().freeMemory() / ONE_MB;
107 long usedMemory = availableMemory - freeMemory;
110 * sanity check - fails if any frame was added after
111 * closeAll_actionPerformed
113 assertEquals(Instance.getDesktop().getAllFrames().length, 0);
116 * if this assertion fails
117 * - set a breakpoint here
118 * - run jvisualvm to inspect a heap dump of Jalview
119 * - identify large objects in the heap and their referers
120 * - fix code as necessary to null the references on close
122 System.out.println("Used memory after gc = " + usedMemory + "MB");
123 assertTrue(usedMemory < expectedMax, String.format(
124 "Used memory %d should be less than %d (Recommend running test manually to verify)",
130 * Loads an alignment from file and exercises various operations in Jalview
134 protected void doStuffInJalview(File f)
137 * load alignment, wait for consensus and other threads to complete
139 AlignFrame af = new FileLoader().LoadFileWaitTillLoaded(f.getPath(),
140 DataSourceType.FILE);
141 while (af.getViewport().isCalcInProgress())
147 * open an Overview window
149 af.overviewMenuItem_actionPerformed(null);
150 assertNotNull(af.alignPanel.overviewPanel);
153 * exercise the pop-up menu in the Overview Panel (JAL-2864)
155 Object[] args = new Object[] {
156 new MouseEvent(af, 0, 0, 0, 0, 0, 1, true) };
157 PA.invokeMethod(af.alignPanel.overviewPanel,
158 "showPopupMenu(java.awt.event.MouseEvent)", args);
161 * set a selection group - potential memory leak if it retains
162 * a reference to the alignment
164 SequenceGroup sg = new SequenceGroup();
167 AlignmentI al = af.viewport.getAlignment();
168 for (int i = 0; i < al.getHeight(); i++)
170 sg.addSequence(al.getSequenceAt(i), false);
172 af.viewport.setSelectionGroup(sg);
175 * compute Tree and PCA (on all sequences, 100 columns)
177 af.openTreePcaDialog();
178 CalculationChooser dialog = af.alignPanel.getCalculationDialog();
179 dialog.openPcaPanel("BLOSUM62", dialog.getSimilarityParameters(true));
180 dialog.openTreePanel("BLOSUM62", dialog.getSimilarityParameters(false));
183 * wait until Tree and PCA have been computed
185 while (af.viewport.getCurrentTree() == null
186 && dialog.getPcaPanel().isWorking())
192 * give Swing time to add the PCA panel (?!?)
198 * Wait for waitMs miliseconds
202 protected void waitFor(int waitMs)
206 Thread.sleep(waitMs);
207 } catch (InterruptedException e)
213 * Generates an alignment and saves it in a temporary file, to be loaded by
214 * Jalview. We use a peptide alignment (so Conservation and Quality are
215 * calculated), which is wide enough to ensure Consensus, Conservation and
216 * Occupancy have a significant memory footprint (if not removed from the
220 * @throws IOException
222 private File generateAlignment() throws IOException
224 File f = File.createTempFile("MemoryTest", "fa");
225 PrintStream ps = new PrintStream(f);
226 AlignmentGenerator ag = new AlignmentGenerator(false, ps);
229 ag.generate(width, height, 0, 10, 15);