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C# what is the size of unmanaged object?


C# what is the size of unmanaged object?

By : DudeFromMars
Date : October 28 2020, 04:55 PM
I wish this helpful for you The only meaning of Marshal.SizeOf is size of unmanaged memory block required for Marshal.StructureToPtr method. SizeOf may not be equal to managed structure size, and to unmanaged structure size. StructureToPtr may serialize a structure with or without padding, it is internal details. SizeOf only reports how much memory this operation requires, and anything else.
code :


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Managed and unmanaged struct are not the same size

Managed and unmanaged struct are not the same size


By : Damian Grzybiński
Date : March 29 2020, 07:55 AM
I wish this helpful for you The difference is because of the declaration for u. The unmanaged declaration has this:
code :
Agraphinfo_t u;
public IntPtr u;
public struct Agraphinfo_t
{
  // fields go here as per unmanaged definition
}

public struct Agraph_t
{
  // ....
  public Agraphinfo_t u;
}
What is the difference in managed and unmanaged code, memory and size?

What is the difference in managed and unmanaged code, memory and size?


By : Goodies
Date : March 29 2020, 07:55 AM
Does that help Short answer:
Managed code is .NET code (VB.NET, C# etc.) that you write and compile to .NET CIL. Unmanaged code is code that is not under .NET that compiles to direct machine code.
Maximum size of unmanaged object in C#

Maximum size of unmanaged object in C#


By : Aibot
Date : March 29 2020, 07:55 AM
may help you . That's limited, in the end, by VirtualAlloc, and it depends how you use the memory, and which OS you're running. Accessing it via C#/.NET doesn't really change this. The Windows Internals book has a Testlimit[64] application which explores these limits. Read the linked post and try out the application for a complete answer.
unmanaged array marshaling and size as pointer

unmanaged array marshaling and size as pointer


By : Ajit Pandey
Date : March 29 2020, 07:55 AM
hop of those help? While I hoped for something better, the following workaround works ok:
code :
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
delegate int StreamRead(IntPtr ptr, byte* buffer, int* bytes);
How to analyze unmanaged heap size of a .NET process

How to analyze unmanaged heap size of a .NET process


By : BTum
Date : March 29 2020, 07:55 AM
hop of those help? !address -summary gives you an overview not focusing on individuals heaps.
Usage summary contains the following:
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