本文整理匯總了Java中java.io.FileDescriptor.sync方法的典型用法代碼示例。如果您正苦於以下問題：Java FileDescriptor.sync方法的具體用法？Java FileDescriptor.sync怎麽用？Java FileDescriptor.sync使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類java.io.FileDescriptor的用法示例。
在下文中一共展示了FileDescriptor.sync方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: sync
import java.io.FileDescriptor; //導入方法依賴的package包/類
private void sync(BufferedOutputStream outputStream, FileDescriptor fileDescriptor) {
boolean success;
try {
outputStream.flush();
fileDescriptor.sync();
success = true;
} catch (IOException e) {
success = false;
e.printStackTrace();
}
if (success && isResumeSupported) {
ComponentHolder.getInstance().getDbHelper()
.updateProgress(request.getDownloadId(),
request.getDownloadedBytes(),
System.currentTimeMillis());
}
}
示例2: updateProgress
import java.io.FileDescriptor; //導入方法依賴的package包/類
/**
* Report download progress through the database if necessary.
*/
private void updateProgress(FileDescriptor outFd) throws IOException, StopRequestException {
final long now = SystemClock.elapsedRealtime();
final long currentBytes = mInfoDelta.mCurrentBytes;
final long sampleDelta = now - mSpeedSampleStart;
if (sampleDelta > 500) {
final long sampleSpeed = ((currentBytes - mSpeedSampleBytes) * 1000)
/ sampleDelta;
if (mSpeed == 0) {
mSpeed = sampleSpeed;
} else {
mSpeed = ((mSpeed * 3) + sampleSpeed) / 4;
}
// Only notify once we have a full sample window
if (mSpeedSampleStart != 0) {
mNotifier.notifyDownloadSpeed(mId, mSpeed);
}
mSpeedSampleStart = now;
mSpeedSampleBytes = currentBytes;
}
final long bytesDelta = currentBytes - mLastUpdateBytes;
final long timeDelta = now - mLastUpdateTime;
if (bytesDelta > Constants.MIN_PROGRESS_STEP && timeDelta > Constants.MIN_PROGRESS_TIME) {
// fsync() to ensure that current progress has been flushed to disk,
// so we can always resume based on latest database information.
outFd.sync();
mInfoDelta.writeToDatabaseOrThrow();
mLastUpdateBytes = currentBytes;
mLastUpdateTime = now;
}
}
示例3: sync
import java.io.FileDescriptor; //導入方法依賴的package包/類
/**
* ファイルディスクリプタの同期.
* @param fd ファイルディスクリプタ
* @throws SyncFailedException 同期に失敗
*/
public void sync(FileDescriptor fd) throws SyncFailedException {
fd.sync();
}