Example usage for java.lang System nanoTime

List of usage examples for java.lang System nanoTime

  1. HOME
  2. Java
  3. java
  4. java.lang.*
  5. System
  6. nanoTime

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public static native long nanoTime();

Source Link

Document

Returns the current value of the running Java Virtual Machine's high-resolution time source, in nanoseconds.

Usage

From source file:gridool.util.GridUtils.java

@Nonnull
public static String generateTaskId(@Nonnull final String jobId, @Nonnull final GridTask task) {
    final long time = System.nanoTime();
    final int hashcode = System.identityHashCode(task);
    long tid = Thread.currentThread().getId();
    return jobId + '#' + Long.toString(time) + '/' + Integer.toString(hashcode) + 'T' + Long.toString(tid);
}

From source file:de.zib.sfs.WrappedFSDataInputStream.java

@Override
public int read(byte[] b, int off, int len) throws IOException {
    long startTime = System.nanoTime();
    int result = this.in.read(b, off, len);
    String datanodeHostname = getDatanodeHostNameString();
    this.aggregator.aggregateReadDataOperationStatistics(OperationSource.SFS, OperationCategory.READ, startTime,
            System.nanoTime(), this.fd, result == -1 ? 0 : result,
            this.hostname.equals(datanodeHostname) || "localhost".equals(datanodeHostname));
    return result;
}

From source file:at.alladin.rmbt.controlServer.QoSResultResource.java

@Post("json")
public String request(final String entity) {
    addAllowOrigin();/*from w  w  w  .j  a  v a 2  s.com*/

    JSONObject request = null;

    final ErrorList errorList = new ErrorList();
    final JSONObject answer = new JSONObject();
    String answerString;

    System.out.println(MessageFormat.format(labels.getString("NEW_QOS_TESTRESULT_DETAIL"), getIP()));

    if (entity != null && !entity.isEmpty())
        // try parse the string to a JSON object
        try {
            request = new JSONObject(entity);

            String lang = request.optString("language");

            // Load Language Files for Client

            final List<String> langs = Arrays
                    .asList(settings.getString("RMBT_SUPPORTED_LANGUAGES").split(",\\s*"));

            if (langs.contains(lang)) {
                errorList.setLanguage(lang);
                labels = (PropertyResourceBundle) ResourceBundle.getBundle("at.alladin.rmbt.res.SystemMessages",
                        new Locale(lang));
            } else
                lang = settings.getString("RMBT_DEFAULT_LANGUAGE");

            if (conn != null) {
                final String testUuid = request.optString("test_uuid");
                long ts = System.nanoTime();
                QoSUtil.evaluate(settings, conn, new TestUuid(testUuid, UuidType.TEST_UUID), answer, lang,
                        errorList);
                long endTs = System.nanoTime() - ts;
                answer.put("evaluation",
                        "Time needed to evaluate test result: " + ((float) endTs / 1000000f) + " ms");
            } else {
                errorList.addError("ERROR_DB_CONNECTION");
            }

        } catch (final JSONException e) {
            errorList.addError("ERROR_REQUEST_JSON");
            e.printStackTrace();
        } catch (SQLException e) {
            errorList.addError("ERROR_DB_CONNECTION");
            e.printStackTrace();
        } catch (HstoreParseException e) {
            errorList.addErrorString(e.getMessage());
            e.printStackTrace();
        } catch (IllegalArgumentException e) {
            errorList.addError("ERROR_REQUEST_JSON");
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (UnsupportedOperationException e) {
            e.printStackTrace();
            errorList.addError("ERROR_REQUEST_QOS_RESULT_DETAIL_NO_UUID");
        }

    else
        errorList.addErrorString("Expected request is missing.");

    try {
        answer.putOpt("error", errorList.getList());
    } catch (final JSONException e) {
        System.out.println("Error saving ErrorList: " + e.toString());
    }

    answerString = answer.toString();

    //System.out.println(answerString);

    return answerString;
}

From source file:org.terracotta.offheapstore.paging.TableStealingFromStorageIT.java

@Test
public void testStealingFromOwnStorage() {
    PageSource source = new UpfrontAllocatingPageSource(new HeapBufferSource(), MEGABYTES.toBytes(1),
            MEGABYTES.toBytes(1));/*from   w w w. j  ava2 s .co  m*/

    OffHeapHashMap<Integer, byte[]> selfStealer = new WriteLockedOffHeapClockCache<>(source, true,
            new SplitStorageEngine<>(new IntegerStorageEngine(), new OffHeapBufferHalfStorageEngine<>(source,
                    KILOBYTES.toBytes(16), ByteArrayPortability.INSTANCE, false, true)));

    long seed = System.nanoTime();
    System.err.println("Random Seed = " + seed);
    Random rndm = new Random(seed);

    int terminalKey = 0;
    for (int key = 0; true; key++) {
        int size = selfStealer.size();
        byte[] payload = new byte[rndm.nextInt(KILOBYTES.toBytes(1))];
        Arrays.fill(payload, (byte) key);
        selfStealer.put(key, payload);
        if (size >= selfStealer.size()) {
            terminalKey = key;
            break;
        }
    }

    System.err.println("Terminal Key = " + terminalKey);

    for (int key = terminalKey + 1; key < 10 * terminalKey; key++) {
        byte[] payload = new byte[rndm.nextInt(KILOBYTES.toBytes(1))];
        Arrays.fill(payload, (byte) key);
        selfStealer.put(key, payload);
        selfStealer.remove(rndm.nextInt(key));
    }

    long measuredSize = 0;
    for (Entry<Integer, byte[]> e : selfStealer.entrySet()) {
        int key = e.getKey();
        byte[] payload = e.getValue();
        for (byte b : payload) {
            assertThat(b, is((byte) key));
        }
        assertThat(selfStealer, hasKey(e.getKey()));
        measuredSize++;
    }
    assertThat(selfStealer.size(), is((int) measuredSize));
    assertThat(selfStealer.getUsedSlotCount(), is(measuredSize));
}

From source file:ezbake.discovery.stethoscope.server.StethoscopeServiceHandler.java

@Override
public boolean checkin(String applicationName, String serviceName, Endpoint endpoint) {
    this.serviceCache.put(endpointToString(endpoint),
            new StethoscopeCacheEntry(applicationName, serviceName, System.nanoTime()));
    // Just make sure we access to make Guava happy
    this.serviceCache.getIfPresent(endpointToString(endpoint));
    logger.info("{} for {}{} just checked in!", endpointToString(endpoint), applicationName, serviceName);
    return true;//from w ww . j a  va2 s .c o  m
}

From source file:com.carrotgarden.maven.scr.CarrotOsgiScrGenerate.java

/**
 * {@inheritDoc}/*ww w  .j a  va 2s.  c  o  m*/
 */
@Override
public void execute() throws MojoFailureException {
    try {

        contextMessageClear(pomFile());

        logInfo("generate");
        logInfo("incremental: " + isContextIncremental());

        if (!isProperPackaging()) {
            logInfo("skip for packaging=" + project.getPackaging());
            return;
        }

        final File folder = outputDirectorySCR();
        if (!folder.exists()) {
            logDebug("");
            if (folder.mkdirs()) {
                logDebug("folder created : " + folder);
            } else {
                logError("failed to create folder : " + folder);
            }
        }

        logDebug("");
        logDebug("excludedServices");
        for (final String service : excludedServices) {
            logDebug("\t service=" + service);
        }

        logDebug("");
        logDebug("properPackaging");
        for (final String packaging : properPackaging) {
            logDebug("\t packaging=" + packaging);
        }

        descriptorCounter = 0;
        allclassesCounter = 0;

        final long timeStart = System.nanoTime();

        if (!isProcessMainClasses && !isProcessTestClasses) {
            logError("you have not selected neither main nor test classes");
        }

        if (isProcessMainClasses) {
            processClassFolder(ClassesSelector.COMPILE);
        }

        if (isProcessTestClasses) {
            processClassFolder(ClassesSelector.TESTING);
        }

        if (isIncludeEmptyDescriptor) {
            includeEmptyDescriptor();
        }

        if (isIncludeGeneratedDescritors) {
            includeDescriptorResource();
        }

        final long timeFinish = System.nanoTime();

        logDebug("");

        final long timeDiff = timeFinish - timeStart;
        final long timeRate = descriptorCounter == 0 ? 0 : timeDiff / descriptorCounter;
        logDebug("combined classes count = " + allclassesCounter);
        logDebug("descriptor class count = " + descriptorCounter);
        logDebug("time, millis total     = " + timeDiff / 1000 / 1000);
        logDebug("rate, millis per descr = " + timeRate / 1000 / 1000);

    } catch (final Throwable e) {
        final String message = "generate failure: " + e;
        logError(message);
        contextMessageError(pomFile(), message, e);
        throw new MojoFailureException("bada-boom", e);
    }
}

From source file:com.netflix.genie.web.security.saml.SAMLUserDetailsServiceImpl.java

/**
 * {@inheritDoc}//  w ww  .ja  va  2s  . com
 */
@Override
public Object loadUserBySAML(final SAMLCredential credential) throws UsernameNotFoundException {
    final long start = System.nanoTime();
    try {
        if (credential == null) {
            throw new UsernameNotFoundException("No credential entered. Unable to get username.");
        }

        final String userAttributeName = this.samlProperties.getAttributes().getUser().getName();
        final String userId = credential.getAttributeAsString(userAttributeName);
        if (StringUtils.isBlank(userId)) {
            throw new UsernameNotFoundException("No user id found using attribute: " + userAttributeName);
        }

        // User exists. Give them at least USER role
        final List<GrantedAuthority> authorities = Lists.newArrayList(USER);

        // See if we can get any other roles
        final String groupAttributeName = this.samlProperties.getAttributes().getGroups().getName();
        final String adminGroup = this.samlProperties.getAttributes().getGroups().getAdmin();
        final String[] groups = credential.getAttributeAsStringArray(groupAttributeName);
        if (groups == null) {
            log.warn("No groups found. User will only get ROLE_USER by default.");
        } else if (Arrays.asList(groups).contains(adminGroup)) {
            authorities.add(ADMIN);
        }

        // For debugging what's available in the credential from the IDP
        if (log.isDebugEnabled()) {
            log.debug("Attributes:");
            credential.getAttributes().forEach(attribute -> {
                log.debug("Attribute: {}", attribute.getName());
                log.debug("Values: {}",
                        StringUtils.join(credential.getAttributeAsStringArray(attribute.getName()), ','));
            });
        }

        log.info("{} is logged in with authorities {}", userId, authorities);
        return new User(userId, "DUMMY", authorities);
    } finally {
        final long finished = System.nanoTime();
        this.loadTimer.record(finished - start, TimeUnit.NANOSECONDS);
    }
}

From source file:ch.algotrader.dao.HibernateInitializer.java

@Override
public <T extends BaseEntityI, C extends Collection<T>> C initializeCollection(BaseEntityI entity,
        String context, C col) {// w  ww.  j  ava2s  .  co  m

    if (col instanceof AbstractPersistentCollection) {

        AbstractPersistentCollection persistentCol = (AbstractPersistentCollection) col;
        if (!persistentCol.wasInitialized()) {
            if (persistentCol.getSession() != null) {

                long before = System.nanoTime();
                persistentCol.forceInitialization();
                MetricsUtil.account(ClassUtils.getShortClassName(entity.getClass()) + context, (before));
            } else {
                throw new IllegalStateException("no hibernate session available");
            }
        }
    }

    return col;
}

From source file:com.yahoo.ycsb.db.RedisClient.java

public static String decompressWithLog(String st) {
    // System.out.println("decompress");
    // System.out.println(st.substring(0, 20));
    long start_time = System.nanoTime();
    String ret = decompress(st);/*from   ww  w  .j  a  va  2  s .c  om*/
    try {
        long end_time = System.nanoTime();
        long time = end_time - start_time;
        BufferedWriter bw = new BufferedWriter(new FileWriter("decompress_time.txt", true));
        bw.write("" + time);
        bw.newLine();
        bw.flush();
    } catch (Exception e) {
    }
    // System.out.println("decompressed");
    // System.out.println(ret.substring(0, 20));
    return ret;
}

From source file:com.diversityarrays.dal.db.bms.GenusStore.java

private void createGenusTable(Connection conn, Closure<String> progress) throws SQLException {

    progress.execute("Creating Genus TEMPORARY table...");

    SqlUtil.executeUpdate(conn, CREATE_GENUS_TABLE);

    String insertGenusRecords = StringTemplate.buildString(INSERT_GENUS_RECORDS_TEMPLATE)
            .replace("fldno", fldNoForGenus).build();

    progress.execute("Populating Genus TEMPORARY table...");
    long startNanos = System.nanoTime();
    int statusCode = SqlUtil.executeUpdate(conn, insertGenusRecords);
    long elapsedNanos = System.nanoTime() - startNanos;
    progress.execute("Population of Genus table took " + (elapsedNanos / 1_000_000.0) + " millis, statusCode="
            + statusCode);/*from   w ww .  ja va 2s. co  m*/
}