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author | Sunny Goyal <sunnygoyal@google.com> | 2017-02-14 15:03:45 -0800 |
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committer | Sunny Goyal <sunnygoyal@google.com> | 2017-03-07 13:44:52 -0800 |
commit | b265ba74490d8ded8659db0d63f50c471d793802 (patch) | |
tree | 8df180bf85b621dc380b9723e769333eebe819ff /src/com/android/launcher3/util/LooperIdleLock.java | |
parent | 7adec0ea5b7505bcf6c689e500bfd579f4083f15 (diff) | |
download | android_packages_apps_Trebuchet-b265ba74490d8ded8659db0d63f50c471d793802.tar.gz android_packages_apps_Trebuchet-b265ba74490d8ded8659db0d63f50c471d793802.tar.bz2 android_packages_apps_Trebuchet-b265ba74490d8ded8659db0d63f50c471d793802.zip |
Removing DeferredHandler and using a simple Handler to post callbacks
DeferredHandler was added when we were posting each icon separately,
to prevent starvation. But since then we have moved to binding batct
items during bind.
Also fixing waitForIdle not waiting the second time. waitForIdle was
using a global variable to maintain state, and was not waiting properly
when its called the second time before binding deep shortcuts
Original Change-Id: I9c1289cb3bfb74f86e53ec7ac6dd76bb39666b2d
Change-Id: I9e6b3ae65fbd3aec3a46092efc5249c4525efedf
Diffstat (limited to 'src/com/android/launcher3/util/LooperIdleLock.java')
-rw-r--r-- | src/com/android/launcher3/util/LooperIdleLock.java | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/com/android/launcher3/util/LooperIdleLock.java b/src/com/android/launcher3/util/LooperIdleLock.java new file mode 100644 index 000000000..35cac14e3 --- /dev/null +++ b/src/com/android/launcher3/util/LooperIdleLock.java @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2017 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.launcher3.util; + +import android.os.Looper; +import android.os.MessageQueue; + +import com.android.launcher3.Utilities; + +/** + * Utility class to block execution until the UI looper is idle. + */ +public class LooperIdleLock implements MessageQueue.IdleHandler, Runnable { + + private final Object mLock; + + private boolean mIsLocked; + + public LooperIdleLock(Object lock, Looper looper) { + mLock = lock; + mIsLocked = true; + if (Utilities.ATLEAST_MARSHMALLOW) { + looper.getQueue().addIdleHandler(this); + } else { + // Looper.myQueue() only gives the current queue. Move the execution to the UI thread + // so that the IdleHandler is attached to the correct message queue. + new LooperExecutor(looper).execute(this); + } + } + + @Override + public void run() { + Looper.myQueue().addIdleHandler(this); + } + + @Override + public boolean queueIdle() { + synchronized (mLock) { + mIsLocked = false; + mLock.notify(); + } + return false; + } + + public boolean awaitLocked(long ms) { + if (mIsLocked) { + try { + // Just in case mFlushingWorkerThread changes but we aren't woken up, + // wait no longer than 1sec at a time + mLock.wait(ms); + } catch (InterruptedException ex) { + // Ignore + } + } + return mIsLocked; + } +} |