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Hi,
I need to implement fast ring buffer for my application.
I try to use the example from the MSDN page here: https://learn.microsoft.com/en-us/windows/win32/api/memoryapi/nf-memoryapi-virtualalloc2
Example of "Scenario 1. Create a circular buffer by mapping two adjacent views of the same shared memory section."
This example work perfectly fine when I run it under the debugger of Visual Studio (2022 & 2019).
But without the Visual Studio (at cmd) call to MapViewOfFile3 ends with the error 0x3e6 (998) - "Invalid access to memory location."
What is it and what to do?
I could not reproduce your issue. I built the Scenario 1 example code using VS2022. All combinations of Platform/Configuration ran without error outside of the Visual Studio debugger in a command prompt window.
Could you please try to run your build twice or more (same combination of Platform/Configuration).
I found that in my case first application run after rebooting is successful and others are not.
The issue does not reproduce in my second test as you requested.
Thank you. I'm sure that example is quite correct. Something with my system (AntiVirus software, etc.). But I'm desperate to find what exactly is wrong.
Upd: Booting in Safe Mode eliminates this problem.
OK, I have ESET NOD32 and disabling it's HIPS "solves" this problem.
Obviously for a production use it needs some workaround.