c# shared memory between managed and unmanaged code

Question

Is it possible on windows for unmanaged code (c++ / c) to write to an area in memory that is then accessed by managed .Net code (c#) (separate processes) I have a c program that is writing data to an circular memory buffer and I want to process the buffer with unmanaged code.

Stephen Cleary · Accepted Answer · 2011-02-22 01:48:29Z

4

If you're looking for a solution where an unmanaged process and managed process can share memory, then you can use the MemoryMappedFile class (introduced in .NET 4.0).

If you're looking to share memory between unmaanged and managed code in the same process, then you can use GCHandle to pin a managed array in memory, and pass it to unmanaged code which can access it.

answered Feb 22, 2011 at 1:48

Stephen Cleary

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Nate Noonen · Accepted Answer · 2011-02-21 20:01:55Z

3

I think you're looking for Marshaling

answered Feb 21, 2011 at 20:01

Nate Noonen

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Michael Stoll · Accepted Answer · 2011-02-21 20:03:27Z

1

Yes,

you should use the Marshall class, especially Marshal.AllocHGlobal..

answered Feb 21, 2011 at 20:03

Michael Stoll

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Kent Boogaart · Accepted Answer · 2011-09-28 01:02:30Z

1

Yes, take a look at the unsafe and fixed keywords.

edited Sep 28, 2011 at 1:02

user142162

answered Feb 21, 2011 at 20:02

Kent Boogaart

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