Example usage for java.lang System gc

List of usage examples for java.lang System gc

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Introduction

In this page you can find the example usage for java.lang System gc.

Prototype

public static void gc()

Source Link

Document

Runs the garbage collector in the Java Virtual Machine.

Usage

From source file:com.thesmartweb.swebrank.Total_analysis.java

/**
 * Method to call search analysis for every query and to save the wordlists
 * @param wordList_previous the previous wordlist to check convergence
 * @param iteration_counter the iteration number
 * @param example_dir the directory to save the files
 * @param domain the domain we analyze//from   w  ww  .j  a  va 2  s .  c  o m
 * @param enginechoice the search engines chosen
 * @param queries the queries we search for
 * @param results_number the amount of results for each query
 * @param top_visible the amount of results if we use Visibility Score  (http://www.advancedwebranking.com/user-guide/html/en/ch08s06.html)
 * @param mozMetrics the metrics of Moz chosen
 * @param moz_threshold_option flag if we are going to use Moz threshold or not
 * @param moz_threshold the threshold to moz metrics
 * @param top_count_moz the amount of links to keep if we use Moz for evaluation
 * @param ContentSemantics get the choice of Content Semantic Analysis algorithm that we are going to use
 * @param SensebotConcepts the amount of concepts to be recognized if Sensebot is used
 * @param SWebRankSettings the settings for LDA and SwebRank in general (check the ReadInput Class)
 * @param config_path the configuration path to get all the api keys
 */
public void perform(List<String> wordList_previous, int iteration_counter, String example_dir, String domain,
        List<Boolean> enginechoice, List<String> queries, int results_number, int top_visible,
        List<Boolean> mozMetrics, boolean moz_threshold_option, double moz_threshold, int top_count_moz,
        List<Boolean> ContentSemantics, int SensebotConcepts, List<Double> SWebRankSettings,
        String config_path) {
    //for every term of the query String[] it performs the search analysis function
    //which includes sumbission of the term to the search engines, getting the results according to the options selected
    //parsing the websites and getting the content and the running LDA on them and getting the top content
    for (String query : queries) {
        System.gc();
        System.gc();
        System.gc();
        List<String> wordList = new ArrayList<>();
        //we call search analysis that is doing all the work needed and returns to us the wordlists
        Search_analysis sa = new Search_analysis();
        //the following string represents the directory for each query
        String example_directory = example_dir + query + "-query//";
        //we set the alpha variable of the LDA algorithm to the value that is said to be optimal in the paper of LDA, alpha
        double alpha = 50 / SWebRankSettings.get(1);
        //we call perform method of search analysis
        wordList = sa.perform(iteration_counter, example_directory, domain, enginechoice, query, results_number,
                top_visible, SWebRankSettings, alpha, mozMetrics, top_count_moz, moz_threshold_option,
                moz_threshold, ContentSemantics, SensebotConcepts, config_path);
        //we add the wordlist to the vector of word list
        ArrayList<String> wordArrayList = new ArrayList<>(wordList);
        array_wordLists.add(wordArrayList);
        //we add the wordlist and to the total wordlist
        wordList_total.addAll(wordList);
    }
    //we are going to check the convergence rate
    CheckConvergence cc = new CheckConvergence(); // here we check the convergence between the two wordLists, the new and the previous
    //the concergence percentage of this iteration, we save it in Elastic Search
    convergence = cc.ConvergenceCalc(wordList_total, wordList_previous);
    //Node node = nodeBuilder().client(true).clusterName("lshrankldacluster").node();
    //Client client = node.client();
    ReadInput ri = new ReadInput();
    List<String> elasticIndexes = ri.GetKeyFile(config_path, "elasticSearchIndexes");
    Settings settings = ImmutableSettings.settingsBuilder().put("cluster.name", "lshrankldacluster").build();
    Client client = new TransportClient(settings)
            .addTransportAddress(new InetSocketTransportAddress("localhost", 9300));
    JSONObject objEngineLevel = new JSONObject();
    objEngineLevel.put("RoundContent", wordList_total);
    objEngineLevel.put("Round", iteration_counter);
    objEngineLevel.put("Convergence", convergence);
    String id = domain + "/" + iteration_counter;
    IndexRequest indexReq = new IndexRequest(elasticIndexes.get(1), "content", id);
    indexReq.source(objEngineLevel);
    IndexResponse indexRes = client.index(indexReq).actionGet();
    client.close();
    //node.close();
}

From source file:com.vaadin.server.AbstractClientConnectorTest.java

@Test
public void stateTypeCacheDoesNotLeakMemory() throws IllegalArgumentException, IllegalAccessException,
        NoSuchFieldException, SecurityException, InterruptedException, ClassNotFoundException {
    Field stateTypeCacheField = AbstractClientConnector.class.getDeclaredField("STATE_TYPE_CACHE");
    stateTypeCacheField.setAccessible(true);
    Map<Class<?>, ?> stateTypeCache = (Map<Class<?>, ?>) stateTypeCacheField.get(null);

    WeakReference<Class<?>> classRef = loadClass("com.vaadin.server.AbstractClientConnector");
    stateTypeCache.put(classRef.get(), null);
    int size = stateTypeCache.size();
    assertNotNull("Class should not yet be garbage collected", classRef.get());

    for (int i = 0; i < 100; ++i) {
        System.gc();
        if (stateTypeCache.size() < size) {
            break;
        }//from  w  w  w .j  a v  a  2  s.c  o  m
        Thread.sleep(100);
    }
    assertTrue(stateTypeCache.size() < size);
    assertNull("Class should be garbage collected", classRef.get());
}

From source file:com.imagelake.control.KeyWordsDAOImp.java

@Override
public List<KeyWords> listKeyWords(String key) {
    List<KeyWords> lis = new ArrayList<KeyWords>();

    try {//from  w w w .  java  2  s.c  o  m
        String sql = "SELECT * FROM key_words WHERE key_word LIKE '%" + key
                + "%' ORDER BY images_images_id DESC";
        PreparedStatement ps = DBFactory.getConnection().prepareStatement(sql);

        ResultSet rs = ps.executeQuery();
        while (rs.next()) {
            System.gc();
            KeyWords w = new KeyWords();
            w.setKey_words_id(rs.getInt(1));
            w.setKey_word(rs.getString(2));
            w.setImages_images_id(rs.getInt(3));
            System.out.println("image id:" + rs.getInt(3));
            lis.add(w);
        }
    } catch (Exception e) {
        e.printStackTrace();

    }
    return lis;
}

From source file:es.udc.gii.rosamituscma.ConstrainedMotionEvolutionaryAlgorithm.java

@Override
protected synchronized void replace(Population toPopulation) {

    //La "toPopulation" es una sub-poblacin de buffer_population:

    while (buffer_population.size() < this.getPopulation().getSize()) {
        try {/*from w ww. j a  va2s.  c o  m*/
            wait(10);
        } catch (InterruptedException ex) {
            System.out.println(
                    "Exception at CMARosaMitusEvolutionaryAlgorithm reproduce phase: " + ex.getMessage());
            System.exit(0);
        }
    }

    //La poblacin buffer es la que tiene la informacin de la calidad:
    Population sub_population = new Population(
            this.buffer_population.subList(0, this.getPopulation().getSize()));
    if (this.getReplaceChain() != null) {
        super.replace(sub_population);
    }
    synchronized (this.buffer_population) {
        for (int i = 0; i < this.getPopulation().getSize(); i++) {
            this.buffer_population.remove(0);
        }
        System.gc();
    }
}

From source file:br.com.hslife.orcamento.controller.ArquivoController.java

@Override
public String startUp() {
    initializeEntity();/*from  w ww.  jav  a 2  s. co  m*/

    // Invoca o Garbage Collector
    System.gc();

    return "/pages/Arquivo/listArquivo";
}

From source file:com.gargoylesoftware.htmlunit.javascript.configuration.JavaScriptConfigurationTest.java

/**
 * Regression test for bug 2854240./*from  w ww  .  j a  v a  2  s. c o m*/
 * This test was throwing an OutOfMemoryError when the bug existed.
 * @throws Exception if an error occurs
 */
@Test
public void memoryLeak() throws Exception {
    long count = 0;
    while (count++ < 3000) {
        final BrowserVersion browserVersion = new BrowserVersion(
                "App" + RandomStringUtils.randomAlphanumeric(20),
                "Version" + RandomStringUtils.randomAlphanumeric(20),
                "User Agent" + RandomStringUtils.randomAlphanumeric(20), 1);
        JavaScriptConfiguration.getInstance(browserVersion);
        if (LOG.isInfoEnabled()) {
            LOG.info("count: " + count + "; memory stats: " + getMemoryStats());
        }
    }
    System.gc();
}

From source file:interfazGrafica.frmMoverRFC.java

public void mostrarPDF() {
    String curp = "";
    curp = txtCapturaCurp.getText();/* www. j ava2  s  .  co  m*/
    ArrayList<DocumentoRFC> Docs = new ArrayList<>();
    DocumentoRFC sigExp;
    DocumentoRFC temporal;
    RFCescaneado tempo = new RFCescaneado();

    //tempo.borrartemporal();
    sigExp = expe.obtenerArchivosExp();
    Nombre_Archivo = sigExp.getNombre();
    nombreArchivo.setText(Nombre_Archivo);

    if (Nombre_Archivo != "") {
        doc = sigExp;
        System.out.println("Obtuvo el nombre del archivo.");
        System.out.println(doc.ruta + doc.nombre);
        String file = "C:\\escaneos\\Local\\Temporal\\" + doc.nombre;
        File arch = new File(file);
        System.out.println("Encontr el siguiente archivo:");
        System.out.println(file);
        System.out.println("");
        if (arch.exists()) {
            System.out.println("El archivo existe");
        }
        try {
            System.out.println("Entr al try");
            RandomAccessFile raf = new RandomAccessFile(file, "r");
            System.out.println("Reconoc el archivo" + file);
            FileChannel channel = raf.getChannel();
            System.out.println("Se abrio el canal");
            ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
            System.out.println("Channel map");
            PDFFile pdffile = new PDFFile(buf);
            System.out.println("Creando un pdf file");
            PDFPage page = pdffile.getPage(0);
            System.out.println("Obteniendo la pagina con " + 0);

            panelpdf2.showPage(page);
            System.out.println("mostrando el panel pdf2");
            repaint();
            System.gc();

            buf.clear();
            raf.close();

            System.gc();

        } catch (Exception ioe) {
            JOptionPane.showMessageDialog(null, "Error al abrir el archivo");
            ioe.printStackTrace();
        }

    }
    // tempo.borrartemporal();
}

From source file:dbs_project.storage.performance.MemoryEfficiencyTest.java

private static void printMemory() {
    for (int i = 0; i < 5; ++i) {
        System.gc();
    }/*from  w w w . j  a  va 2s  .  c  om*/

    double memory = ((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / 1024f / 1024f);
    Utils.getOut().println("Memory footprint: " + memory + " MB");
    Utils.getOut().println();

    Utils.getOut()
            .println("<measurements layer=\"storage\">\r\n"
                    + "<measurement><name>footprint</name><scale>2000</scale><value>" + memory
                    + "</value></measurement>\r\n" + "</measurements>");
    Utils.getOut().println();
}

From source file:com.android.yijiang.kzx.http.DataAsyncHttpResponseHandler.java

/**
 * Returns byte array of response HttpEntity contents
 *
 * @param entity can be null/*  ww w  . ja  v a  2s.  c  om*/
 * @return response entity body or null
 * @throws java.io.IOException if reading entity or creating byte array failed
 */
@Override
byte[] getResponseData(HttpEntity entity) throws IOException {

    byte[] responseBody = null;
    if (entity != null) {
        InputStream instream = entity.getContent();
        if (instream != null) {
            long contentLength = entity.getContentLength();
            if (contentLength > Integer.MAX_VALUE) {
                throw new IllegalArgumentException("HTTP entity too large to be buffered in memory");
            }
            if (contentLength < 0) {
                contentLength = BUFFER_SIZE;
            }
            try {
                ByteArrayBuffer buffer = new ByteArrayBuffer((int) contentLength);
                try {
                    byte[] tmp = new byte[BUFFER_SIZE];
                    int l;
                    // do not send messages if request has been cancelled
                    while ((l = instream.read(tmp)) != -1 && !Thread.currentThread().isInterrupted()) {
                        buffer.append(tmp, 0, l);
                        sendProgressDataMessage(copyOfRange(tmp, 0, l));
                    }
                } finally {
                    AsyncHttpClient.silentCloseInputStream(instream);
                }
                responseBody = buffer.toByteArray();
            } catch (OutOfMemoryError e) {
                System.gc();
                throw new IOException("File too large to fit into available memory");
            }
        }
    }
    return responseBody;
}

From source file:gov.nih.nci.cabig.caaers.CaaersDbTestCase.java

@Override
protected void setUp() throws Exception {
    super.setUp();
    applicationContext = getDeployedApplicationContext();
    ((CaaersJavaMailSender) applicationContext.getBean("mailer")).SUPRESS_MAIL_SEND_EXCEPTION = true;
    setUpAuthorization();/*from ww w .  j av a2  s.c o  m*/
    setUpAuditing();
    setUpSession();
    System.gc();

}