gc dispose

SqlConnection ()) {} method to create connection, because when the. Net Framwork automatically executes the Connection.dispose () method, so you can ensure that the connetion is closed in a timely manner.1) so timely call. Dispose () is really that heavy either, if an object goes beyond the living space, is it automatically cleaned up in. NET by the GC (garbage collector)?This problem is actually due to

resourcePrivateAnotherresource Managedresource =NewAnotherresource (); Privatebool disposed=false; /// ///implementing the Dispose method in IDisposable///publicvoid Dispose () {//must be TrueDispose (true); //notifies the garbage collection mechanism not to call finalizers (destructors)Gc. SuppressFinalize ( This); } /// ///not necessary, p

Abstract Class Mystream: idisposable 6 { 7 Public Mystream () 8 { 9 M_unmanagedresource = Marshal. alloccotaskmem ( 100 ); 10 M_bitmap = New Bitmap ( 50 , 50 ); 11 } 12 13 # Region Idisposable members 14 Void Idisposable. Dispose () 15 { 16 Dispose ( True ); 17 GC. suppressfinalize ( This ); 18 } 19

Valid tive C # item18: implement the standard dispose Pattern Releasing unmanaged resources is an important part. For custom types, if resources need to be released, we should use the standard mode of. NET Framework to release unmanaged resources. In standard mode, the idisposable interface is used to explicitly release resources, and the finalizer is used to release resources when users forget to release resources. Whether the object Terminator shoul

This article is the third of the GC expert series. In the first understanding of Java garbage Collection, we learned several different GC algorithm processing processes, the way GC works, the difference between the new generation and the old age. So, you should have known about the 5 GC types in JDK 7, and the performa

Http://www.cnblogs.com/eddyshn/archive/2009/08/19/1549961.htmlThere are actually two functions for freeing resources in. NET objects:Dispose and Finalize. The purpose of finalize is to release unmanaged Resources , while Dispose is used to free all resources, both managed and unmanaged.In this pattern, the void Dispose (bool disposing) function uses a disposing parameter to distinguish whether the current i

=Marshal.allochglobal (100); //Demo Creating a managed resource PrivateAnotherresource Managedresource= NewAnotherresource (); Private boolDisposed= False; /// ///Implementing the Dispose method in IDisposable /// Public voidDispose (){ //Must be TrueDispose (True); //Notifies the garbage collection mechanism not to call finalizers (destructors)Gc. SuppressFinalize (This);} /// ///Not necessary, provide

The destructor in C # actually overwrites the virtual method in system. object.Finalize The three most common methods are as follows: 1. destructor (called by GC, not sure when to call it) 2. inherit the idisposable interface to implement the dispose method. (You can call it manually. For example, the connection to the database, sqlconnection. Dispose (),

will analyze the structure and execute garbage collection.F. If an object has a Finalize method, the garbage collector will automatically call this method before it recovers its memory.G. In this way, we can clean up those (unmanaged resources ). From this point of view, the mechanism provided by the garbage collector is to better improve the. net automatic memory management function, so that we can also participate in the garbage collection. 10. Let's take a look at what

(bool disposing){So this method is called directly by the client, so both managed and unmanaged resources can be freedif (disposing){Releasing managed resourcesOthermanagedobject.dispose ();}Freeing unmanaged ResourcesDounmanagedobjectdispose (); This method is called directly by the customer, telling the garbage collector to purge itself from the finalization queue, thereby preventing the garbage collector from invoking the Finalize method.if (disposing)Gc