Android Open Source - Jello Space Module

From Project

Back to project page Jello.

License

The source code is released under:

Apache License

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Java Source Code

package com.atteo.jello.space;
//from w w w.j a  va  2  s.  c o m
import java.util.HashMap;

import com.atteo.jello.store.PageSizeProvider;
import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.name.Names;

public class SpaceModule implements Module {
  // ---- SETTINGS

  private final int histogramClasses = 8;

  private final short blockSize = 64;
  private final short blocksPerPage;
  private final short freeSpaceInfoSize;
  private final short freeSpaceInfosPerPage;
  private final short freeSpaceInfoPageCapacity;

  // --------------

  private final short pageSize;

  private final HashMap<String, String> properties;

  public SpaceModule(final HashMap<String, String> properties) {
    pageSize = new PageSizeProvider().get();

    blocksPerPage = (short) (pageSize / blockSize);
    freeSpaceInfoSize = (short) (blocksPerPage / (short) Byte.SIZE);
    freeSpaceInfoPageCapacity = (short) (pageSize - 4);
    freeSpaceInfosPerPage = (short) (freeSpaceInfoPageCapacity / freeSpaceInfoSize);

    this.properties = getDefaultProperties();
    if (properties != null)
      this.properties.putAll(properties);

  }

  public void configure(final Binder binder) {
    Names.bindProperties(binder, properties);

    binder.bind(SpaceManagerPolicy.class).to(Hybrid.class);
  }

  private HashMap<String, String> getDefaultProperties() {
    final HashMap<String, String> p = new HashMap<String, String>();
    p.put("nextFitHistogramClasses", String.valueOf(histogramClasses));
    p.put("blockSize", String.valueOf(blockSize));
    p.put("blockPerPage", String.valueOf(blocksPerPage));
    p.put("freeSpaceInfoSize", String.valueOf(freeSpaceInfoSize));
    p.put("freeSpaceInfoPageCapacity", String
        .valueOf(freeSpaceInfoPageCapacity));
    p.put("freeSpaceInfosPerPage", String.valueOf(freeSpaceInfosPerPage));

    return p;
  }
}

Java Source Code List