How to make sure unmanaged memory release .net core ?

 In .NET Core, unmanaged memory is typically allocated and released through the use of pointers and the Marshal.AllocHGlobal and Marshal.FreeHGlobal methods. These methods are part of the System.Runtime.InteropServices namespace and are used to allocate and release unmanaged memory in the global heap.

To ensure that unmanaged memory is properly released, you should make sure to call the FreeHGlobal method when you are finished using the memory. You can do this in a finally block to ensure that the memory is released even if an exception is thrown. Here is an example of how you might use these methods to allocate and release unmanaged memory in .NET Core:

using System; using System.Runtime.InteropServices; namespace UnmanagedMemoryExample { class Program { static void Main(string[] args) { // Allocate unmanaged memory IntPtr ptr = Marshal.AllocHGlobal(1024); try { // Use the unmanaged memory here... } finally { // Release the unmanaged memory Marshal.FreeHGlobal(ptr); } } } }

Note that you should only use the global heap for small blocks of memory that are needed for a short period of time. For larger blocks of memory or for memory that is needed for a longer period of time, you should consider using the Marshal.AllocCoTaskMem method or creating a managed wrapper class that can be used to manage the memory.

It is also a good idea to use the using statement whenever possible to automatically release resources when they are no longer needed. This can help simplify your code and reduce the chances of resource leaks.