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Merge pull request #4 from m2049r/features
lots of tweaks
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161 changes: 161 additions & 0 deletions
161
app/src/main/java/com/m2049r/xmrwallet/service/MoneroHandlerThread.java
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (C) 2006 The Android Open Source Project | ||
| * Copyright (c) 2017 m2049r | ||
| * | ||
| * 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. | ||
| */ | ||
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|
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| package com.m2049r.xmrwallet.service; | ||
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| import android.os.Handler; | ||
| import android.os.Looper; | ||
| import android.os.Message; | ||
| import android.os.Process; | ||
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| /** | ||
| * Handy class for starting a new thread that has a looper. The looper can then be | ||
| * used to create handler classes. Note that start() must still be called. | ||
| * The started Thread has a stck size of STACK_SIZE (=3MB) | ||
| */ | ||
| public class MoneroHandlerThread extends Thread { | ||
| // from src/cryptonote_config.h | ||
| static public final long THREAD_STACK_SIZE = 5 * 1024 * 1024; | ||
| int mPriority; | ||
| int mTid = -1; | ||
| Looper mLooper; | ||
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|
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| public MoneroHandlerThread(String name) { | ||
| super(null, null, name, THREAD_STACK_SIZE); | ||
| mPriority = Process.THREAD_PRIORITY_DEFAULT; | ||
| } | ||
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|
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| /** | ||
| * Constructs a MoneroHandlerThread. | ||
| * | ||
| * @param name | ||
| * @param priority The priority to run the thread at. The value supplied must be from | ||
| * {@link android.os.Process} and not from java.lang.Thread. | ||
| */ | ||
| public MoneroHandlerThread(String name, int priority) { | ||
| super(null, null, name, THREAD_STACK_SIZE); | ||
| mPriority = priority; | ||
| } | ||
|
|
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| /** | ||
| * Call back method that can be explicitly overridden if needed to execute some | ||
| * setup before Looper loops. | ||
| */ | ||
|
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| protected void onLooperPrepared() { | ||
| } | ||
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| @Override | ||
| public void run() { | ||
| mTid = Process.myTid(); | ||
| Looper.prepare(); | ||
| synchronized (this) { | ||
| mLooper = Looper.myLooper(); | ||
| notifyAll(); | ||
| } | ||
| Process.setThreadPriority(mPriority); | ||
| onLooperPrepared(); | ||
| Looper.loop(); | ||
| mTid = -1; | ||
| } | ||
|
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| /** | ||
| * This method returns the Looper associated with this thread. If this thread not been started | ||
| * or for any reason is isAlive() returns false, this method will return null. If this thread | ||
| * has been started, this method will block until the looper has been initialized. | ||
| * | ||
| * @return The looper. | ||
| */ | ||
| public Looper getLooper() { | ||
| if (!isAlive()) { | ||
| return null; | ||
| } | ||
|
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| // If the thread has been started, wait until the looper has been created. | ||
| synchronized (this) { | ||
| while (isAlive() && mLooper == null) { | ||
| try { | ||
| wait(); | ||
| } catch (InterruptedException e) { | ||
| } | ||
| } | ||
| } | ||
| return mLooper; | ||
| } | ||
|
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| /** | ||
| * Quits the handler thread's looper. | ||
| * <p> | ||
| * Causes the handler thread's looper to terminate without processing any | ||
| * more messages in the message queue. | ||
| * </p><p> | ||
| * Any attempt to post messages to the queue after the looper is asked to quit will fail. | ||
| * For example, the {@link Handler#sendMessage(Message)} method will return false. | ||
| * </p><p class="note"> | ||
| * Using this method may be unsafe because some messages may not be delivered | ||
| * before the looper terminates. Consider using {@link #quitSafely} instead to ensure | ||
| * that all pending work is completed in an orderly manner. | ||
| * </p> | ||
| * | ||
| * @return True if the looper looper has been asked to quit or false if the | ||
| * thread had not yet started running. | ||
| * @see #quitSafely | ||
| */ | ||
| public boolean quit() { | ||
| Looper looper = getLooper(); | ||
| if (looper != null) { | ||
| looper.quit(); | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
|
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| /** | ||
| * Quits the handler thread's looper safely. | ||
| * <p> | ||
| * Causes the handler thread's looper to terminate as soon as all remaining messages | ||
| * in the message queue that are already due to be delivered have been handled. | ||
| * Pending delayed messages with due times in the future will not be delivered. | ||
| * </p><p> | ||
| * Any attempt to post messages to the queue after the looper is asked to quit will fail. | ||
| * For example, the {@link Handler#sendMessage(Message)} method will return false. | ||
| * </p><p> | ||
| * If the thread has not been started or has finished (that is if | ||
| * {@link #getLooper} returns null), then false is returned. | ||
| * Otherwise the looper is asked to quit and true is returned. | ||
| * </p> | ||
| * | ||
| * @return True if the looper looper has been asked to quit or false if the | ||
| * thread had not yet started running. | ||
| */ | ||
| public boolean quitSafely() { | ||
| Looper looper = getLooper(); | ||
| if (looper != null) { | ||
| looper.quitSafely(); | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
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| /** | ||
| * Returns the identifier of this thread. See Process.myTid(). | ||
| */ | ||
| public int getThreadId() { | ||
| return mTid; | ||
| } | ||
| } |
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