/// <summary>
/// download file with Multiple-threaded, resume-from-break
/// </summary>
/// <param name="url"></param>
/// <param name="filePath"></param>
/// <param name="totalSize"></param>
/// <param name="func"></param>
/// <returns></returns>
private bool RangeDownload(string url, string filePath, long totalSize, Func <long, long, bool> func)
{
if (!FileUtil.EnsureFileSize(filePath, totalSize))
{
return(false);
}
const int threadCount = 5;
long length = totalSize / threadCount;
var workers = new List <RangeDownloadWorker>();
long readSize = 0;
for (int i = 0; i < threadCount; ++i)
{
long start = i * length;
long end = (i + 1 == threadCount) ? (totalSize - 1) : (start + length);
var worker = new RangeDownloadWorker(url, filePath, start, end, count =>
{
if (func == null)
{
return(true);
}
lock (func)
{
readSize += count;
func(readSize, totalSize);
}
return(true);
});
workers.Add(worker);
if (!worker.Start())
{
break;
}
}
bool result = true;
for (int i = 0; i < workers.Count; ++i)
{
if (!result)
{
workers[i].Stop();
}
result = workers[i].Join();
}
return(true);
}
/// <summary>
/// download file with Multiple-threaded, resume-from-break
/// </summary>
/// <param name="url"></param>
/// <param name="filePath"></param>
/// <param name="totalSize"></param>
/// <param name="func"></param>
/// <returns></returns>
private bool RangeDownload(string url, string filePath, long totalSize, Func<long, long, bool> func)
{
if (!FileUtil.EnsureFileSize(filePath, totalSize))
return false;
const int threadCount = 5;
long length = totalSize/threadCount;
var workers = new List<RangeDownloadWorker>();
long readSize = 0;
for (int i = 0; i < threadCount; ++i)
{
long start = i*length;
long end = (i + 1 == threadCount) ? (totalSize - 1) : (start + length);
var worker = new RangeDownloadWorker(url, filePath, start, end, count =>
{
if (func == null)
return true;
lock (func)
{
readSize += count;
func(readSize, totalSize);
}
return true;
});
workers.Add(worker);
if (!worker.Start())
break;
}
bool result = true;
for (int i = 0; i < workers.Count; ++i)
{
if (!result)
{
workers[i].Stop();
}
result = workers[i].Join();
}
return true;
}
