Ejemplo n.º 1
0
  @Test
  public void testGC() throws Exception {
    int gcRuns = PictureTilingCacheGCManager.getGCRuns();

    PictureTilingService pts = Framework.getLocalService(PictureTilingService.class);
    assertNotNull(pts);
    benchTiler(pts, new MagickTiler());
    testMagick2();
    testMagick2();
    long cacheSize = PictureTilingCacheGCManager.getCacheSizeInKBs();
    // System.out.println("CacheSize = " + cacheSize + "KB");
    assertTrue(cacheSize > 0);

    int reduceSize = 500;
    // System.out.println("performing GC with " + reduceSize
    // + " KB target reduction");
    PictureTilingCacheGCManager.doGC(reduceSize);

    int gcRuns2 = PictureTilingCacheGCManager.getGCRuns();

    assertEquals(1, gcRuns2 - gcRuns);

    long newCacheSize = PictureTilingCacheGCManager.getCacheSizeInKBs();
    // System.out.println("new cacheSize = " + newCacheSize + "KB");
    // System.out.println("effective delta = " + (cacheSize - newCacheSize)
    // + "KB");
    assertTrue(cacheSize - newCacheSize > reduceSize);
  }
  public static boolean gcIfNeeded() {
    gcCalls += 1;
    log.debug("GC Thread awake, see if there is some work to be done");

    long totalSize = getCacheSizeInKBs();
    long limit = getMaxDiskSpaceUsageKB();

    if (totalSize < limit) {
      log.debug("No GC needed, go back to sleep for now");
      return false;
    }

    // do the GC
    long deltaInKB = totalSize - limit;
    log.debug("GC needed to free " + deltaInKB + " KB of data");
    doGC(deltaInKB);
    log.debug("GC terminated");

    return true;
  }