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我有一個Visual Studio C＃應用程序，它的任務是下載圖片，進行一些操作，如旋轉和翻轉和Finnaly將新圖片存儲在外部HD中。在執行過程中沒有內存的應用程序
我有幾個線程正在做同樣的工作。
當應用程序運行了幾個小時後，就會出現一個異常，表明缺少存儲空間。
下圖顯示了應用程序啓動時的進程內存，但當它運行一段時間後，此類內存增加到3Gb。
在我關閉所有流，memorystreams，位圖，實例等程序。 因此，問題是，如何在執行過程中釋放內存或避免內存增加？
try
{
request = (HttpWebRequest)WebRequest.Create(new Uri(this._url, UriKind.Absolute));
request.UserAgent = UserAgent.get_user_agent();
noCachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
request.CachePolicy = noCachePolicy;
response = request.GetResponse();
responseStream = response.GetResponseStream();
reader = new BinaryReader(responseStream);
memoryStream = new MemoryStream();
byte[] bytebuffer = new byte[BytesToRead];
int bytesRead = reader.Read(bytebuffer, 0, BytesToRead);
while (bytesRead > 0)
{
memoryStream.Write(bytebuffer, 0, bytesRead);
bytesRead = reader.Read(bytebuffer, 0, BytesToRead);
}
image.BeginInit();
memoryStream.Seek(0, SeekOrigin.Begin);
image.StreamSource = memoryStream;
image.EndInit();
if (image.Width < 100 || image.Height < 50)
{
_parent.working_image = "Error procesado imagen";
_parent.isWorking = false;
return false;
}
Bitmap image_rotated = CropImage(RotateFlipImage(BitmapImage2Bitmap(image)));
if (image_rotated == null)
{
_parent.working_image = "Error procesado imagen";
_parent.isWorking = false;
return false;
}
BitmapFrame image200 = CreateResizedImage(Bitmap2BitmapImage(image_rotated), "large");
BitmapFrame image100 = CreateResizedImage(Bitmap2BitmapImage(image_rotated), "short");
// Directorio
int directory_main = (int)(this._Id/10000);
// Generamos la imagen de 200px
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
String photolocation = @"D:\hilo_" + hilo + "_200.jpg"; //file name
encoder.Frames.Add(BitmapFrame.Create(image200));
FileStream filestream = null;
try
{
using (filestream = new FileStream(photolocation, FileMode.Create))
{
encoder.Save(filestream);
}
// creamos directorio si no existe
System.IO.Directory.CreateDirectory(@"D:\backoffice\originales\" + directory_main + @"\" + this._Id);
if (!this.saveImage(photolocation, @"D:\backoffice\originales\" + directory_main + @"\" + this._Id + @"\" + _filename + "_200.jpg"))
{
_parent.working_image = "Error procesado imagen";
_parent.isWorking = false;
image = null;
memoryStream.Close();
filestream.Close();
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
return false;
}
filestream.Close();
// Generamos la imagen de 100px
encoder = new JpegBitmapEncoder();
photolocation = @"D:\hilo_" + hilo + "_100.jpg"; //file name
encoder.Frames.Add(BitmapFrame.Create(image100));
using (filestream = new FileStream(photolocation, FileMode.Create))
{
encoder.Save(filestream);
}
// creamos directorio si no existe
if (!this.saveImage(photolocation, @"D:\backoffice\originales\" + directory_main + @"\" + this._Id + @"\" + _filename + "_100.jpg"))
{
_parent.working_image = "Error procesado imagen";
_parent.isWorking = false;
image = null;
memoryStream.Close();
filestream.Close();
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
return false;
}
filestream.Close();
encoder = null;
image100 = null;
image200 = null;
SqlConnection con = new SqlConnection(@"Data Source=DESKTOP-UC7AQ3V\SQLEXPRESS;Integrated Security=SSPI;User ID=frank;password=jungla");
SqlCommand cmd = new SqlCommand("UPDATE dbo.image_objects_download_log SET locked=0, worked=1, isWorking=1 WHERE [email protected]", con);
cmd.Parameters.AddWithValue("@id", Id);
con.Open();
cmd.ExecuteNonQuery();
cmd.Dispose();
con.Close();
_parent.working_image = "Trabajo finalizado con éxito";
_parent.isWorking = false;
image = null;
memoryStream.Close();
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
return true;
}
catch (IOException e)
{
Console.WriteLine("---------> " + e.Message);
_parent.working_image = "Error procesado imagen";
_parent.isWorking = false;
image = null;
memoryStream.Close();
filestream.Close();
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
return false;
}
catch (UriFormatException e)
{
_parent.working_image = "Error procesado imagen";
_parent.isWorking = false;
image = null;
memoryStream.Close();
filestream.Close();
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
return false;
}
}
你需要顯示代碼在哪裏通過內存咀嚼 –
我有應用程序正在運行。一旦出現異常，我會拍照。 – Apalabrados
你也處置這些對象嗎？ –