Here are a few question-based titles that fit your article description, along with a brief explanation of why they work: **Option 1:** **Need to Share Memory Between Applications? Explore Memory Map

How to Share Memory Between Two Applications

In a scenario where two separate applications (written in different languages, such as C and C#) need to share data in memory, utilizing Memory Mapped Files (MMFs) proves to be an effective and fast solution.

Memory Mapped Files Explained

MMFs are a Windows feature that allows different processes to share a region of memory. By mapping the file into the address space of each application, both can directly access and manipulate the shared data without the need for inter-process communication mechanisms.

Implementation

1. Create the MMF: The application writing the data must create an MMF using the CreateFileMapping function. This specifies the size of the shared memory and permissions for access.
2. Map the MMF: Both the writing and reading applications map the MMF into their address spaces using the MapViewOfFile function. This creates a pointer to the shared memory region.
3. Write and Read Data: The writing application can access and modify the data in the shared memory directly using the pointer. The reading application can retrieve the data by accessing the same pointer in its own address space.

Advantages of MMFs

• Fast and efficient data transfer
• Avoids costly copying between processes
• Supports large shared memory segments
• Works across different programming languages

Example

The following article provides detailed instructions on using MMFs in applications:

• [Sharing Memory Between Multiple Processes Using Memory Mapped Files](https://docs.microsoft.com/en-us/windows/win32/memory/using-memory-mapped-files)

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