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public:
static long GetTotalMemory(bool forceFullCollection);
public static long GetTotalMemory (bool forceFullCollection);
static member GetTotalMemory : bool -> int64
Public Shared Function GetTotalMemory (forceFullCollection As Boolean) As Long
Paramètres
true
pour indiquer que cette méthode peut attendre le garbage collection avant de retourner une réponse ; sinon,
false
.
Retours
Exemples
L’exemple suivant montre comment utiliser la
GetTotalMemory
méthode pour obtenir et afficher le nombre d’octets actuellement alloués dans la mémoire managée.
using namespace System;
const long maxGarbage = 1000;
ref class MyGCCollectClass
public:
void MakeSomeGarbage()
Version^ vt;
for ( int i = 0; i < maxGarbage; i++ )
// Create objects and release them to fill up memory
// with unused objects.
vt = gcnew Version;
int main()
MyGCCollectClass^ myGCCol = gcnew MyGCCollectClass;
// Determine the maximum number of generations the system
// garbage collector currently supports.
Console::WriteLine( "The highest generation is {0}", GC::MaxGeneration );
myGCCol->MakeSomeGarbage();
// Determine which generation myGCCol object is stored in.
Console::WriteLine( "Generation: {0}", GC::GetGeneration( myGCCol ) );
// Determine the best available approximation of the number
// of bytes currently allocated in managed memory.
Console::WriteLine( "Total Memory: {0}", GC::GetTotalMemory( false ) );
// Perform a collection of generation 0 only.
GC::Collect( 0 );
// Determine which generation myGCCol object is stored in.
Console::WriteLine( "Generation: {0}", GC::GetGeneration( myGCCol ) );
Console::WriteLine( "Total Memory: {0}", GC::GetTotalMemory( false ) );
// Perform a collection of all generations up to and including 2.
GC::Collect( 2 );
// Determine which generation myGCCol object is stored in.
Console::WriteLine( "Generation: {0}", GC::GetGeneration( myGCCol ) );
Console::WriteLine( "Total Memory: {0}", GC::GetTotalMemory( false ) );
using System;
namespace GCCollectIntExample
class MyGCCollectClass
private const long maxGarbage = 1000;
static void Main()
MyGCCollectClass myGCCol = new MyGCCollectClass();
// Determine the maximum number of generations the system
// garbage collector currently supports.
Console.WriteLine("The highest generation is {0}", GC.MaxGeneration);
myGCCol.MakeSomeGarbage();
// Determine which generation myGCCol object is stored in.
Console.WriteLine("Generation: {0}", GC.GetGeneration(myGCCol));
// Determine the best available approximation of the number
// of bytes currently allocated in managed memory.
Console.WriteLine("Total Memory: {0}", GC.GetTotalMemory(false));
// Perform a collection of generation 0 only.
GC.Collect(0);
// Determine which generation myGCCol object is stored in.
Console.WriteLine("Generation: {0}", GC.GetGeneration(myGCCol));
Console.WriteLine("Total Memory: {0}", GC.GetTotalMemory(false));
// Perform a collection of all generations up to and including 2.
GC.Collect(2);
// Determine which generation myGCCol object is stored in.
Console.WriteLine("Generation: {0}", GC.GetGeneration(myGCCol));
Console.WriteLine("Total Memory: {0}", GC.GetTotalMemory(false));
Console.Read();
void MakeSomeGarbage()
Version vt;
for(int i = 0; i < maxGarbage; i++)
// Create objects and release them to fill up memory
// with unused objects.
vt = new Version();
open System
let maxGarbage = 1000
type MyGCCollectClass() =
member _.MakeSomeGarbage() =
for _ = 1 to maxGarbage do
// Create objects and release them to fill up memory with unused objects.
Version() |> ignore
[<EntryPoint>]
let main _ =
let myGCCol = MyGCCollectClass()
// Determine the maximum number of generations the system
// garbage collector currently supports.
printfn $"The highest generation is {GC.MaxGeneration}"
myGCCol.MakeSomeGarbage()
// Determine which generation myGCCol object is stored in.
printfn $"Generation: {GC.GetGeneration myGCCol}"
// Determine the best available approximation of the number
// of bytes currently allocated in managed memory.
printfn $"Total Memory: {GC.GetTotalMemory false}"
// Perform a collection of generation 0 only.
GC.Collect 0
// Determine which generation myGCCol object is stored in.
printfn $"Generation: {GC.GetGeneration myGCCol}"
printfn $"Total Memory: {GC.GetTotalMemory false}"
// Perform a collection of all generations up to and including 2.
GC.Collect 2
// Determine which generation myGCCol object is stored in.
printfn $"Generation: {GC.GetGeneration myGCCol}"
printfn $"Total Memory: {GC.GetTotalMemory false}"
Namespace GCCollectInt_Example
Class MyGCCollectClass
Private maxGarbage As Long = 10000
Public Shared Sub Main()
Dim myGCCol As New MyGCCollectClass
'Determine the maximum number of generations the system
'garbage collector currently supports.
Console.WriteLine("The highest generation is {0}", GC.MaxGeneration)
myGCCol.MakeSomeGarbage()
'Determine which generation myGCCol object is stored in.
Console.WriteLine("Generation: {0}", GC.GetGeneration(myGCCol))
'Determine the best available approximation of the number
'of bytes currently allocated in managed memory.
Console.WriteLine("Total Memory: {0}", GC.GetTotalMemory(False))
'Perform a collection of generation 0 only.
GC.Collect(0)
'Determine which generation myGCCol object is stored in.
Console.WriteLine("Generation: {0}", GC.GetGeneration(myGCCol))
Console.WriteLine("Total Memory: {0}", GC.GetTotalMemory(False))
'Perform a collection of all generations up to and including 2.
GC.Collect(2)
'Determine which generation myGCCol object is stored in.
Console.WriteLine("Generation: {0}", GC.GetGeneration(myGCCol))
Console.WriteLine("Total Memory: {0}", GC.GetTotalMemory(False))
Console.Read()
End Sub
Sub MakeSomeGarbage()
Dim vt As Version
Dim i As Integer
For i = 0 To maxGarbage - 1
'Create objects and release them to fill up memory
'with unused objects.
vt = New Version
Next i
End Sub
End Class
End Namespace
Remarques
Si le
forceFullCollection
paramètre est
true
, cette méthode attend un court intervalle avant de retourner pendant que le système collecte la mémoire et finalise les objets. La durée de l’intervalle est une limite spécifiée en interne, déterminée par le nombre de cycles de garbage collection terminés et la modification de la quantité de mémoire récupérée entre les cycles. Le récupérateur de mémoire ne garantit pas que toute la mémoire inaccessible est collectée.
