3 import static org.testng.Assert.assertEquals;
4 import static org.testng.Assert.assertTrue;
6 import jalview.analysis.AlignmentGenerator;
7 import jalview.bin.Cache;
8 import jalview.bin.Jalview;
9 import jalview.datamodel.AlignmentI;
10 import jalview.datamodel.SequenceGroup;
11 import jalview.io.DataSourceType;
12 import jalview.io.FileLoader;
15 import java.io.IOException;
16 import java.io.PrintStream;
18 import org.testng.annotations.BeforeClass;
19 import org.testng.annotations.Test;
21 public class FreeUpMemoryTest
23 private static final int ONE_MB = 1000 * 1000;
26 * Configure (read-only) Jalview property settings for test
28 @BeforeClass(alwaysRun = true)
31 Jalview.main(new String[] { "-nonews", "-props",
32 "test/jalview/testProps.jvprops" });
33 Cache.applicationProperties.setProperty("SHOW_ANNOTATIONS",
34 Boolean.TRUE.toString());
35 Cache.applicationProperties.setProperty("SHOW_QUALITY",
36 Boolean.TRUE.toString());
37 Cache.applicationProperties.setProperty("SHOW_CONSERVATION",
38 Boolean.TRUE.toString());
39 Cache.applicationProperties.setProperty("SHOW_OCCUPANCY",
40 Boolean.TRUE.toString());
41 Cache.applicationProperties.setProperty("SHOW_IDENTITY",
42 Boolean.TRUE.toString());
46 * A simple test that memory is released when all windows are closed.
48 * <li>generates a reasonably large alignment and loads it</li>
49 * <li>performs various operations on the alignment</li>
50 * <li>closes all windows</li>
51 * <li>requests garbage collection</li>
52 * <li>asserts that the remaining memory footprint (heap usage) is 'not large'
55 * If the test fails, this suggests that a reference to some large object
56 * (perhaps the alignment data, or some annotation / Tree / PCA data) has
57 * failed to be garbage collected. If this is the case, the heap will need to
58 * be inspected manually (suggest using jvisualvm) in order to track down
59 * where large objects are still referenced. The code (for example
60 * AlignmentViewport.dispose()) should then be updated to ensure references to
61 * large objects are set to null when they are no longer required.
65 @Test(groups = "Memory")
66 public void testFreeMemoryOnClose() throws IOException
68 File f = generateAlignment();
73 Desktop.instance.closeAll_actionPerformed(null);
79 * Requests garbage collection and then checks whether remaining memory in use
80 * is less than the expected value (in Megabytes)
84 protected void checkUsedMemory(long expectedMax)
87 * request garbage collection and wait briefly for it to run;
88 * NB there is no guarantee when, or whether, it will do so
94 * a second gc() call should not be necessary - but it is!
95 * the test passes with it, and fails without it
101 * check used memory is 'reasonably low'
103 long availableMemory = Runtime.getRuntime().totalMemory() / ONE_MB;
104 long freeMemory = Runtime.getRuntime().freeMemory() / ONE_MB;
105 long usedMemory = availableMemory - freeMemory;
108 * sanity check - fails if any frame was added after
109 * closeAll_actionPerformed
111 assertEquals(Desktop.instance.getAllFrames().length, 0);
114 * if this assertion fails
115 * - set a breakpoint here
116 * - run jvisualvm to inspect a heap dump of Jalview
117 * - identify large objects in the heap and their referers
118 * - fix code as necessary to null the references on close
120 System.out.println("Used memory after gc = " + usedMemory + "MB");
121 assertTrue(usedMemory < expectedMax, String.format(
122 "Used memory %d should be less than %d (Recommend running test manually to verify)",
128 * Loads an alignment from file and exercises various operations in Jalview
132 protected void doStuffInJalview(File f)
135 * load alignment, wait for consensus and other threads to complete
137 AlignFrame af = new FileLoader().LoadFileWaitTillLoaded(f.getPath(),
138 DataSourceType.FILE);
139 while (af.getViewport().isCalcInProgress())
145 * set a selection group - potential memory leak if it retains
146 * a reference to the alignment
148 SequenceGroup sg = new SequenceGroup();
151 AlignmentI al = af.viewport.getAlignment();
152 for (int i = 0; i < al.getHeight(); i++)
154 sg.addSequence(al.getSequenceAt(i), false);
156 af.viewport.setSelectionGroup(sg);
159 * compute Tree and PCA (on all sequences, 100 columns)
161 af.openTreePcaDialog();
162 CalculationChooser dialog = af.alignPanel.getCalculationDialog();
163 dialog.openPcaPanel("BLOSUM62", dialog.getSimilarityParameters(true));
164 dialog.openTreePanel("BLOSUM62", dialog.getSimilarityParameters(false));
167 * wait until Tree and PCA have been computed
169 while (af.viewport.getCurrentTree() == null
170 && dialog.getPcaPanel().isWorking())
176 * give Swing time to add the PCA panel (?!?)
182 * Wait for waitMs miliseconds
186 protected void waitFor(int waitMs)
190 Thread.sleep(waitMs);
191 } catch (InterruptedException e)
197 * Generates an alignment and saves it in a temporary file, to be loaded by
198 * Jalview. We use a peptide alignment (so Conservation and Quality are
199 * calculated), which is wide enough to ensure Consensus, Conservation and
200 * Occupancy have a significant memory footprint (if not removed from the
204 * @throws IOException
206 private File generateAlignment() throws IOException
208 File f = File.createTempFile("MemoryTest", "fa");
209 PrintStream ps = new PrintStream(f);
210 AlignmentGenerator ag = new AlignmentGenerator(false, ps);
213 ag.generate(width, height, 0, 10, 15);