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线程池

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This commit is contained in:
lyy
2016-10-18 18:30:02 +08:00
parent de3abbd28b
commit 08d662e053
1 changed files with 32 additions and 25 deletions
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57
downloadutil/src/main/java/com/arialyy/downloadutil/util/DownLoadUtil.java
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@ -43,7 +43,8 @@ final class DownLoadUtil {
private int mStopNum = 0; private int mStopNum = 0;
private Context mContext; private Context mContext;
private DownloadEntity mDownloadEntity; private DownloadEntity mDownloadEntity;
private ExecutorService mFixedThreadPool = Executors.newFixedThreadPool(THREAD_NUM); private ExecutorService mFixedThreadPool = Executors.newFixedThreadPool(THREAD_NUM);
private SparseArray<Runnable> mTask = new SparseArray<>();
public DownLoadUtil(Context context, DownloadEntity entity) { public DownLoadUtil(Context context, DownloadEntity entity) {
mContext = context.getApplicationContext(); mContext = context.getApplicationContext();
@ -84,7 +85,12 @@ final class DownLoadUtil {
Log.d(TAG, "++++++++++++++++ onStop +++++++++++++++++"); Log.d(TAG, "++++++++++++++++ onStop +++++++++++++++++");
isDownloading = false; isDownloading = false;
mFixedThreadPool.shutdown(); mFixedThreadPool.shutdown();
mListener.onStop(mCurrentLocation); for (int i = 0; i < THREAD_NUM; i++) {
DownLoadTask task = (DownLoadTask) mTask.get(i);
if (task != null) {
task.stop();
}
}
} }
/** /**
@ -189,10 +195,9 @@ final class DownLoadUtil {
} }
} }
} }
SparseArray<Thread> tasks = new SparseArray<>(); int blockSize = fileLength / THREAD_NUM;
int blockSize = fileLength / THREAD_NUM; int[] recordL = new int[THREAD_NUM];
int[] recordL = new int[THREAD_NUM]; int rl = 0;
int rl = 0;
for (int i = 0; i < THREAD_NUM; i++) { for (int i = 0; i < THREAD_NUM; i++) {
recordL[i] = -1; recordL[i] = -1;
} }
@ -241,7 +246,7 @@ final class DownLoadUtil {
ConfigEntity entity = ConfigEntity entity =
new ConfigEntity(mContext, fileLength, downloadUrl, dFile, i, startL, endL); new ConfigEntity(mContext, fileLength, downloadUrl, dFile, i, startL, endL);
DownLoadTask task = new DownLoadTask(entity); DownLoadTask task = new DownLoadTask(entity);
tasks.put(i, new Thread(task)); mTask.put(i, task);
} }
if (mCurrentLocation > 0) { if (mCurrentLocation > 0) {
mListener.onResume(mCurrentLocation); mListener.onResume(mCurrentLocation);
@ -250,10 +255,9 @@ final class DownLoadUtil {
} }
for (int l : recordL) { for (int l : recordL) {
if (l == -1) continue; if (l == -1) continue;
Thread task = tasks.get(l); Runnable task = mTask.get(l);
if (task != null) { if (task != null) {
mFixedThreadPool.execute(task); mFixedThreadPool.execute(task);
//task.start();
} }
} }
} else { } else {
@ -278,6 +282,7 @@ final class DownLoadUtil {
mListener.onFail(); mListener.onFail();
} }
/** /**
* 多线程下载任务类,不能使用AsyncTask来进行多线程下载，因为AsyncTask是串行执行的，这种方式下载速度太慢了 * 多线程下载任务类,不能使用AsyncTask来进行多线程下载，因为AsyncTask是串行执行的，这种方式下载速度太慢了
*/ */
@ -285,6 +290,7 @@ final class DownLoadUtil {
private static final String TAG = "DownLoadTask"; private static final String TAG = "DownLoadTask";
private ConfigEntity dEntity; private ConfigEntity dEntity;
private String configFPath; private String configFPath;
private long currentLocation = 0;
private DownLoadTask(ConfigEntity downloadInfo) { private DownLoadTask(ConfigEntity downloadInfo) {
this.dEntity = downloadInfo; this.dEntity = downloadInfo;
@ -295,9 +301,8 @@ final class DownLoadUtil {
} }
@Override public void run() { @Override public void run() {
long currentLocation = 0; HttpURLConnection conn = null;
HttpURLConnection conn = null; InputStream is = null;
InputStream is = null;
try { try {
Log.d(TAG, "线程_" Log.d(TAG, "线程_"
+ dEntity.threadId + dEntity.threadId
@ -352,7 +357,7 @@ final class DownLoadUtil {
} }
//停止状态不需要删除记录文件 //停止状态不需要删除记录文件
if (isStop) { if (isStop) {
stop(currentLocation); //stop();
return; return;
} }
Log.i(TAG, "线程【" + dEntity.threadId + "】下载完毕"); Log.i(TAG, "线程【" + dEntity.threadId + "】下载完毕");
@ -378,20 +383,22 @@ final class DownLoadUtil {
/** /**
* 停止下载 * 停止下载
*
* @throws IOException
*/ */
private void stop(long currentLocation) throws IOException { protected void stop() {
synchronized (LOCK) { synchronized (LOCK) {
mStopNum++; try {
String location = String.valueOf(currentLocation); mStopNum++;
Log.i(TAG, "thread_" + dEntity.threadId + "_stop, stop location ==> " + currentLocation); String location = String.valueOf(currentLocation);
writeConfig(dEntity.tempFile.getName() + "_record_" + dEntity.threadId, location); Log.i(TAG, "thread_" + dEntity.threadId + "_stop, stop location ==> " + currentLocation);
//if (mStopNum == THREAD_NUM) { writeConfig(dEntity.tempFile.getName() + "_record_" + dEntity.threadId, location);
// Log.d(TAG, "++++++++++++++++ onStop +++++++++++++++++"); if (mStopNum == THREAD_NUM) {
// isDownloading = false; Log.d(TAG, "++++++++++++++++ onStop +++++++++++++++++");
// mListener.onStop(mCurrentLocation); isDownloading = false;
//} mListener.onStop(mCurrentLocation);
}
} catch (IOException e) {
e.printStackTrace();
}
} }
} }