public void PutTile <T>(TileIdentify tile, int bandNo, T[] buffer)
{
long id = long.Parse(bandNo.ToString() + tile.TileNo.ToString());
if (_cachedFiles.Contains(id))
{
return;
}
string fname = GetTileBufferFileName(tile, bandNo);
int len = tile.Width * tile.Height * DataTypeHelper.SizeOf(_dataProvider.DataType);
byte[] dstBuffer = new byte[len];
GCHandle srcHandle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
GCHandle dstHandle = GCHandle.Alloc(dstBuffer, GCHandleType.Pinned);
try
{
WinAPI.MemoryCopy(dstHandle.AddrOfPinnedObject(), srcHandle.AddrOfPinnedObject(), len);
tryAgainLine:
try
{
File.WriteAllBytes(fname, dstBuffer);
}
catch (DirectoryNotFoundException)//缓存目录被删除
{
Directory.CreateDirectory(_fDir);
goto tryAgainLine;
}
catch (IOException ioex)
{
if (ioex.Message.Contains("磁盘空间"))
{
FileDiskCacheManagerFactory.TryFreeDiskspace(_fDir);
}
return;
}
_cachedFiles.Add(id);
}
finally
{
srcHandle.Free();
dstHandle.Free();
}
}
private void ActiveFileDiskCacheManager()
{
_fileDiskCacheManager = FileDiskCacheManagerFactory.Active(_dataProvider);
_enableDiskCache = _fileDiskCacheManager != null;
}
