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:edu.harvard.i2b2.eclipse.plugins.metadataLoader.ws.OntServiceDriver.java

public static String sendREST(EndpointReference restEPR, String requestString, String type) throws Exception {

    //      requestString.replaceAll("\\p{Cntrl}", "");  did not fix illegal control char error
    OMElement getOnt = getOntPayLoad(requestString);
    MessageUtil.getInstance().setNavRequest("URL: " + restEPR + "\n" + getOnt.toString());

    Options options = new Options();
    log.debug(restEPR.toString());//  w w w  .  j  a  v  a 2 s  . c  o  m
    options.setTo(restEPR);
    options.setTransportInProtocol(Constants.TRANSPORT_HTTP);

    options.setProperty(Constants.Configuration.ENABLE_REST, Constants.VALUE_TRUE);
    options.setProperty(HTTPConstants.SO_TIMEOUT, new Integer(125000));
    options.setProperty(HTTPConstants.CONNECTION_TIMEOUT, new Integer(125000));

    ServiceClient sender = OntServiceClient.getServiceClient();
    sender.setOptions(options);

    OMElement result;
    try {
        result = sender.sendReceive(getOnt);
    } catch (java.lang.OutOfMemoryError e) {
        System.gc();
        throw new I2B2Exception("Out of memory");
        //         return null;
    }
    String response = result.toString();
    MessageUtil.getInstance().setNavResponse("URL: " + restEPR + "\n" + response);

    return response;

}

From source file:de.blizzy.backup.restore.RestoreDialog.java

@Override
public boolean close() {
    IRunnableWithProgress runnable = new IRunnableWithProgress() {
        @Override//w  ww. j  a  v a  2  s.  c  om
        public void run(IProgressMonitor monitor) {
            monitor.beginTask(Messages.Title_CloseBackupDatabase, IProgressMonitor.UNKNOWN);
            try {
                database.close();
                for (final IStorageInterceptor interceptor : storageInterceptors) {
                    SafeRunner.run(new ISafeRunnable() {
                        @Override
                        public void run() {
                            interceptor.destroy();
                        }

                        @Override
                        public void handleException(Throwable t) {
                            BackupPlugin.getDefault().logError("error while destroying storage interceptor", t); //$NON-NLS-1$
                        }
                    });
                }
            } finally {
                monitor.done();
            }
        }
    };
    ProgressMonitorDialog dlg = new ProgressMonitorDialog(getShell());
    try {
        dlg.run(true, false, runnable);
    } catch (InvocationTargetException e) {
        // TODO
        BackupPlugin.getDefault().logError("Error while closing backup database", e); //$NON-NLS-1$
    } catch (InterruptedException e) {
        // not cancelable
    }

    System.gc();

    return super.close();
}

From source file:edmondskarp.Controller.EdmondsKarpController.java

public void openState(String s) throws JSONException {
    if (s == null || s.equals("")) {
        graph.clearGraph();//from ww  w . java  2s .c  om
        gui.getCircles().clear();
        name = 0;
        gui.update();
        return;
    }

    Map<String, Circle> circles = new HashMap<>();
    graph.clearGraph();

    int maxIndex = 0;
    JSONObject jNodeEdge = new JSONObject(s); // Parse the JSON to a JSONObject
    JSONArray jNodes = jNodeEdge.getJSONArray("Node");
    JSONArray jEdges = jNodeEdge.getJSONArray("Edge");

    for (int i = 0; i < jNodes.length(); i++) { // Loop over each each row of node
        Circle circle = new Circle();
        Point point = new Point();

        JSONObject jNode = jNodes.getJSONObject(i);

        point.setLocation(jNode.getInt("PosX"), jNode.getInt("PosY"));
        circle.setFirstPoint(point);
        circle.addNode(graph.addNode("" + jNode.getString("ID")));

        circles.put(jNode.getString("ID"), circle);
        if (jNode.getInt("ID") > maxIndex) {
            maxIndex = jNode.getInt("ID");
        }
    }

    name = ++maxIndex;

    for (int i = 0; i < jEdges.length(); i++) { // Loop over each each row of edge
        JSONObject jEdge = jEdges.getJSONObject(i);
        Edge e = graph.connect(jEdge.getString("From"), jEdge.getString("To"), jEdge.getInt("Capacity"), 0);
        if (e == null) {
            graph.checkInverseArrowConnection(jEdge.getString("From"), jEdge.getString("To"),
                    jEdge.getInt("Capacity"));
        } else {
            Arrow arrow = new Arrow(circles.get(jEdge.getString("From")), circles.get(jEdge.getString("To")));
            arrow.setEdge(e);
            circles.get(jEdge.getString("From")).addArrowFrom(arrow);
            circles.get(jEdge.getString("To")).addArrowTo(arrow);
        }

    }

    if (!jNodeEdge.getString("Source").equals("")) {
        graph.setSource(graph.getNode(jNodeEdge.getString("Source")));
    }
    if (!jNodeEdge.getString("Sink").equals("")) {
        graph.setSink(graph.getNode(jNodeEdge.getString("Sink")));
    }

    gui.setCircles(new ArrayList(circles.values()));
    gui.update();
    System.gc();
}

From source file:org.ofbiz.common.CommonServices.java

public static Map<String, Object> forceGc(DispatchContext dctx, Map<String, ?> context) {
    System.gc();
    return ServiceUtil.returnSuccess();
}

From source file:br.com.carlosrafaelgn.fplay.ActivityBrowserRadio.java

private void addPlaySelectedItem(final boolean play) {
    if (radioStationList.getSelection() < 0)
        return;//from  www.  ja  v  a2s.c om
    try {
        final RadioStation radioStation = radioStationList.getItemT(radioStationList.getSelection());
        if (radioStation.m3uUri == null || radioStation.m3uUri.length() < 0) {
            UI.toast(getApplication(), R.string.error_file_not_found);
            return;
        }
        Player.songs.addingStarted();
        SongAddingMonitor.start(getHostActivity());
        (new Thread("Checked Radio Station Adder Thread") {
            @Override
            public void run() {
                AndroidHttpClient client = null;
                HttpResponse response = null;
                InputStream is = null;
                InputStreamReader isr = null;
                BufferedReader br = null;
                try {
                    if (Player.getState() == Player.STATE_TERMINATED
                            || Player.getState() == Player.STATE_TERMINATING) {
                        Player.songs.addingEnded();
                        return;
                    }
                    client = AndroidHttpClient.newInstance(
                            "Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2049.0 Safari/537.36 Debian");
                    response = client.execute(new HttpGet(radioStation.m3uUri));
                    final StatusLine statusLine = response.getStatusLine();
                    final int s = statusLine.getStatusCode();
                    if (s == HttpStatus.SC_OK) {
                        is = response.getEntity().getContent();
                        isr = new InputStreamReader(is, "UTF-8");
                        br = new BufferedReader(isr, 1024);
                        ArrayList<String> lines = new ArrayList<String>(8);
                        String line;
                        while ((line = br.readLine()) != null) {
                            line = line.trim();
                            if (line.length() > 0 && line.charAt(0) != '#'
                                    && (line.regionMatches(true, 0, "http://", 0, 7)
                                            || line.regionMatches(true, 0, "https://", 0, 8)))
                                lines.add(line);
                        }
                        if (Player.getState() == Player.STATE_TERMINATED
                                || Player.getState() == Player.STATE_TERMINATING) {
                            Player.songs.addingEnded();
                            return;
                        }
                        if (lines.size() == 0) {
                            Player.songs.addingEnded();
                            MainHandler.toast(R.string.error_gen);
                        } else {
                            //instead of just using the first available address, let's use
                            //one from the middle ;)
                            Player.songs.addFiles(new FileSt[] {
                                    new FileSt(lines.get(lines.size() >> 1), radioStation.title, null, 0) },
                                    null, 1, play, false, true);
                        }
                    } else {
                        Player.songs.addingEnded();
                        MainHandler.toast(
                                (s >= 400 && s < 500) ? R.string.error_file_not_found : R.string.error_gen);
                    }
                } catch (Throwable ex) {
                    Player.songs.addingEnded();
                    MainHandler.toast(ex);
                } finally {
                    try {
                        if (client != null)
                            client.close();
                    } catch (Throwable ex) {
                    }
                    try {
                        if (is != null)
                            is.close();
                    } catch (Throwable ex) {
                    }
                    try {
                        if (isr != null)
                            isr.close();
                    } catch (Throwable ex) {
                    }
                    try {
                        if (br != null)
                            br.close();
                    } catch (Throwable ex) {
                    }
                    br = null;
                    isr = null;
                    is = null;
                    client = null;
                    response = null;
                    System.gc();
                }
            }
        }).start();
    } catch (Throwable ex) {
        Player.songs.addingEnded();
        UI.toast(getApplication(), ex.getMessage());
    }
}

From source file:com.ettrema.zsync.IntegrationTests.java

/**
 * Creates the zsync File for servercopy, and saves it to a File with name fileName
 * @param fileName The name of the file in which to save the zsync data
 * @param blocksize The block size to use in MetaFileMaker
 * @return The created zsync File/*  ww w .  j  a va 2s  .  c o  m*/
 * @throws FileNotFoundException
 */
private File createMetaFile(String fileName, int blocksize, File serverFile) throws FileNotFoundException {
    System.out.println("---------------- createMetaFile -------------------");

    System.gc();
    Runtime rt = Runtime.getRuntime();
    startUsed = rt.totalMemory() - rt.freeMemory();

    MetaFileMaker mkr = new MetaFileMaker();
    File zsfile = mkr.make(null, blocksize, serverFile);
    System.gc();
    System.out.println("Memory stats: " + formatBytes(rt.maxMemory()) + " - " + formatBytes(rt.totalMemory())
            + " - " + formatBytes(rt.freeMemory()));
    long endUsed = (rt.totalMemory() - rt.freeMemory());
    System.out.println("Start used memory: " + formatBytes(startUsed) + " end used memory: "
            + formatBytes(endUsed) + " - delta: " + formatBytes(endUsed - startUsed));

    File dest = new File(filepath + fileName);
    if (dest.exists()) {
        if (!dest.delete()) {
            throw new RuntimeException("Failed to delete previous meta file: " + dest.getAbsolutePath());
        }
    }
    System.out.println("rename meta file to: " + dest.getAbsolutePath());
    if (!zsfile.renameTo(dest)) {
        throw new RuntimeException("Failed to rename to: " + dest.getAbsolutePath());
    }
    System.out.println("Created meta file of size: " + formatBytes(dest.length())
            + " from source file of size: " + formatBytes(serverFile.length()));
    System.out.println("");
    return dest;
}

From source file:com.chuannuo.tangguo.net.TGHttpResponseHandler.java

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");
            }// w  w w.j  a va2 s .  co  m
            int buffersize = (contentLength <= 0) ? BUFFER_SIZE : (int) contentLength;
            try {
                ByteArrayBuffer buffer = new ByteArrayBuffer(buffersize);
                try {
                    byte[] tmp = new byte[BUFFER_SIZE];
                    long count = 0;
                    int l;
                    // do not send messages if request has been cancelled
                    while ((l = instream.read(tmp)) != -1 && !Thread.currentThread().isInterrupted()) {
                        count += l;
                        buffer.append(tmp, 0, l);
                        sendProgressMessage(count, (contentLength <= 0 ? 1 : contentLength));
                    }
                } finally {
                    TGHttpClient.silentCloseInputStream(instream);
                    TGHttpClient.endEntityViaReflection(entity);
                }
                responseBody = buffer.toByteArray();
            } catch (OutOfMemoryError e) {
                System.gc();
                throw new IOException("File too large to fit into available memory");
            }
        }
    }
    return responseBody;
}

From source file:eu.planets_project.pp.plato.action.ProjectExportAction.java

/**
 * Adds all enlisted plans to an XML document, but does NOT write binary data.
 * Instead the Id's of all referenced uploads and sample records are added to the provided lists,
 * this way they can be added later.//from w w  w.  j a  v  a  2 s . co m
 *   
 * @param ppids
 * @param uploadIDs
 * @param recordIDs
 * @return
 */
public Document exportToXml(List<Integer> ppids, List<Integer> uploadIDs, List<Integer> recordIDs) {
    ProjectExporter exporter = new ProjectExporter();
    Document doc = exporter.createProjectDoc();

    int i = 0;
    for (Integer id : ppids) {
        // load one plan after the other:
        List<Plan> list = em.createQuery("select p from Plan p where p.planProperties.id = " + id)
                .getResultList();
        if (list.size() != 1) {
            FacesMessages.instance().add(FacesMessage.SEVERITY_ERROR,
                    "Skipping the export of the plan with properties" + id + ": Couldnt load.");
        } else {
            //log.debug("adding project "+p.getplanProperties().getName()+" to XML...");
            exporter.addProject(list.get(0), doc, uploadIDs, recordIDs);
        }
        list.clear();
        list = null;

        log.info("XMLExport: addString destinationed project ppid=" + id);
        i++;
        if ((i % 10 == 0)) {
            em.clear();
            System.gc();
        }
    }
    return doc;
}

From source file:edu.uc.rphash.tests.kmeanspp.KMeansPlusPlus.java

public static void main(String[] args) {
    GenerateData gen = new GenerateData(3, 5000, 2, .1f);
    KMeansPlusPlus<DoublePoint> kk = new KMeansPlusPlus<>(gen.data(), 3);

    System.out.println(StatTests.WCSSECentroidsFloat(kk.getCentroids(), gen.getData()));
    System.gc();
}

From source file:com.panet.imeta.job.entries.deletefiles.JobEntryDeleteFiles.java

private boolean ProcessFile(String filename, String wildcard, Job parentJob) {
    LogWriter log = LogWriter.getInstance();

    boolean rcode = false;
    FileObject filefolder = null;
    String realFilefoldername = environmentSubstitute(filename);
    String realwildcard = environmentSubstitute(wildcard);

    try {/* w w w .  ja  v  a2 s.  co m*/
        filefolder = KettleVFS.getFileObject(realFilefoldername);

        // Here gc() is explicitly called if e.g. createfile is used in the
        // same
        // job for the same file. The problem is that after creating the
        // file the
        // file object is not properly garbaged collected and thus the file
        // cannot
        // be deleted anymore. This is a known problem in the JVM.

        System.gc();

        if (filefolder.exists()) {
            // the file or folder exists
            if (filefolder.getType() == FileType.FOLDER) {
                // It's a folder
                if (log.isDetailed())
                    log.logDetailed(toString(),
                            Messages.getString("JobEntryDeleteFiles.ProcessingFolder", realFilefoldername)); //$NON-NLS-1$
                // Delete Files

                int Nr = filefolder
                        .delete(new TextFileSelector(filefolder.toString(), realwildcard, parentJob));

                if (log.isDetailed())
                    log.logDetailed(toString(),
                            Messages.getString("JobEntryDeleteFiles.TotalDeleted", String.valueOf(Nr))); //$NON-NLS-1$
                rcode = true;
            } else {
                // It's a file
                if (log.isDetailed())
                    log.logDetailed(toString(),
                            Messages.getString("JobEntryDeleteFiles.ProcessingFile", realFilefoldername)); //$NON-NLS-1$
                boolean deleted = filefolder.delete();
                if (!deleted) {
                    log.logError(toString(),
                            Messages.getString("JobEntryDeleteFiles.CouldNotDeleteFile", realFilefoldername)); //$NON-NLS-1$
                } else {
                    if (log.isBasic())
                        log.logBasic(toString(),
                                Messages.getString("JobEntryDeleteFiles.FileDeleted", filename)); //$NON-NLS-1$
                    rcode = true;
                }
            }
        } else {
            // File already deleted, no reason to try to delete it
            if (log.isBasic())
                log.logBasic(toString(),
                        Messages.getString("JobEntryDeleteFiles.FileAlreadyDeleted", realFilefoldername)); //$NON-NLS-1$
            rcode = true;
        }
    } catch (IOException e) {
        log.logError(toString(),
                Messages.getString("JobEntryDeleteFiles.CouldNotProcess", realFilefoldername, e.getMessage())); //$NON-NLS-1$
    } finally {
        if (filefolder != null) {
            try {
                filefolder.close();
            } catch (IOException ex) {
            }
            ;
        }
    }

    return rcode;
}