Examples with SoftReference java.lang.ref.SoftReference used on opensource projects

Example 6 with SoftReference

use of java.lang.ref.SoftReference in project android_frameworks_base by ParanoidAndroid.

the class HeapTest method xxtestSoftRefPartialClean.

public void xxtestSoftRefPartialClean() throws Exception {
    final int NUM_REFS = 128;
    Object[] objects = new Object[NUM_REFS];
    SoftReference<Object>[] refs = new SoftReference[objects.length];
    /* Create a bunch of objects and a parallel array
        * of SoftReferences.
        */
    makeRefs(objects, refs);
    Runtime.getRuntime().gc();
    /* Let go of the hard references to the objects so that
        * the references can be cleared.
        */
    clearRefs(objects);
    /* Start creating a bunch of temporary and permanent objects
        * to drive GC.
        */
    final int NUM_OBJECTS = 64 * 1024;
    Object[] junk = new Object[NUM_OBJECTS];
    Random random = new Random();
    int i = 0;
    int mod = 0;
    int totalSize = 0;
    int cleared = -1;
    while (i < junk.length && totalSize < 8 * 1024 * 1024) {
        int r = random.nextInt(64 * 1024) + 128;
        Object o = (Object) new byte[r];
        if (++mod % 16 == 0) {
            junk[i++] = o;
            totalSize += r * 4;
        }
        cleared = checkRefs(refs, cleared);
    }
}

Example 7 with SoftReference

use of java.lang.ref.SoftReference in project joda-time-android by dlew.

the class ResourceZoneInfoProvider method getZone.

//-----------------------------------------------------------------------
/**
     * If an error is thrown while loading zone data, the exception is logged
     * to system error and null is returned for this and all future requests.
     *
     * @param id  the id to load
     * @return the loaded zone
     */
public DateTimeZone getZone(String id) {
    if (id == null) {
        return null;
    }
    Object obj = iZoneInfoMap.get(id);
    if (obj == null) {
        return null;
    }
    if (id.equals(obj)) {
        // Load zone data for the first time.
        return loadZoneData(id);
    }
    if (obj instanceof SoftReference<?>) {
        @SuppressWarnings("unchecked") SoftReference<DateTimeZone> ref = (SoftReference<DateTimeZone>) obj;
        DateTimeZone tz = ref.get();
        if (tz != null) {
            return tz;
        }
        // Reference cleared; load data again.
        return loadZoneData(id);
    }
    // If this point is reached, mapping must link to another.
    return getZone((String) obj);
}

Example 8 with SoftReference

use of java.lang.ref.SoftReference in project android_frameworks_base by ResurrectionRemix.

the class HeapTest method xxtestSoftRefPartialClean.

public void xxtestSoftRefPartialClean() throws Exception {
    final int NUM_REFS = 128;
    Object[] objects = new Object[NUM_REFS];
    SoftReference<Object>[] refs = new SoftReference[objects.length];
    /* Create a bunch of objects and a parallel array
        * of SoftReferences.
        */
    makeRefs(objects, refs);
    Runtime.getRuntime().gc();
    /* Let go of the hard references to the objects so that
        * the references can be cleared.
        */
    clearRefs(objects);
    /* Start creating a bunch of temporary and permanent objects
        * to drive GC.
        */
    final int NUM_OBJECTS = 64 * 1024;
    Object[] junk = new Object[NUM_OBJECTS];
    Random random = new Random();
    int i = 0;
    int mod = 0;
    int totalSize = 0;
    int cleared = -1;
    while (i < junk.length && totalSize < 8 * 1024 * 1024) {
        int r = random.nextInt(64 * 1024) + 128;
        Object o = (Object) new byte[r];
        if (++mod % 16 == 0) {
            junk[i++] = o;
            totalSize += r * 4;
        }
        cleared = checkRefs(refs, cleared);
    }
}

Example 9 with SoftReference

use of java.lang.ref.SoftReference in project android_packages_inputmethods_LatinIME by CyanogenMod.

the class PersonalizationHelper method removeAllUserHistoryDictionaries.

public static void removeAllUserHistoryDictionaries(final Context context) {
    synchronized (sLangUserHistoryDictCache) {
        for (final ConcurrentHashMap.Entry<String, SoftReference<UserHistoryDictionary>> entry : sLangUserHistoryDictCache.entrySet()) {
            if (entry.getValue() != null) {
                final UserHistoryDictionary dict = entry.getValue().get();
                if (dict != null) {
                    dict.clear();
                }
            }
        }
        sLangUserHistoryDictCache.clear();
        final File filesDir = context.getFilesDir();
        if (filesDir == null) {
            Log.e(TAG, "context.getFilesDir() returned null.");
            return;
        }
        final boolean filesDeleted = FileUtils.deleteFilteredFiles(filesDir, new DictFilter(UserHistoryDictionary.NAME));
        if (!filesDeleted) {
            Log.e(TAG, "Cannot remove dictionary files. filesDir: " + filesDir.getAbsolutePath() + ", dictNamePrefix: " + UserHistoryDictionary.NAME);
        }
    }
}

Example 10 with SoftReference

use of java.lang.ref.SoftReference in project DanmakuFlameMaster by Bilibili.

the class SpannedCacheStuffer method drawText.

@Override
public void drawText(BaseDanmaku danmaku, String lineText, Canvas canvas, float left, float top, TextPaint paint, boolean fromWorkerThread) {
    if (danmaku.obj == null) {
        super.drawText(danmaku, lineText, canvas, left, top, paint, fromWorkerThread);
        return;
    }
    SoftReference<StaticLayout> reference = (SoftReference<StaticLayout>) danmaku.obj;
    StaticLayout staticLayout = reference.get();
    boolean requestRemeasure = 0 != (danmaku.requestFlags & BaseDanmaku.FLAG_REQUEST_REMEASURE);
    boolean requestInvalidate = 0 != (danmaku.requestFlags & BaseDanmaku.FLAG_REQUEST_INVALIDATE);
    if (requestInvalidate || staticLayout == null) {
        if (requestInvalidate) {
            danmaku.requestFlags &= ~BaseDanmaku.FLAG_REQUEST_INVALIDATE;
        }
        CharSequence text = danmaku.text;
        if (text != null) {
            if (requestRemeasure) {
                staticLayout = new StaticLayout(text, paint, (int) Math.ceil(StaticLayout.getDesiredWidth(danmaku.text, paint)), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, true);
                danmaku.paintWidth = staticLayout.getWidth();
                danmaku.paintHeight = staticLayout.getHeight();
                danmaku.requestFlags &= ~BaseDanmaku.FLAG_REQUEST_REMEASURE;
            } else {
                staticLayout = new StaticLayout(text, paint, (int) danmaku.paintWidth, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, true);
            }
            danmaku.obj = new SoftReference<>(staticLayout);
        } else {
            return;
        }
    }
    boolean needRestore = false;
    if (left != 0 && top != 0) {
        canvas.save();
        canvas.translate(left, top + paint.ascent());
        needRestore = true;
    }
    staticLayout.draw(canvas);
    if (needRestore) {
        canvas.restore();
    }
}