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Questions - memory-mapped-files

Are multiple memory mapped files bugged?

when adding a second memory mapped file to my project the first one no longer works cross processes. Imports System.IO.MemoryMappedFiles Module IPC Private ReadOnly _QlCtxOpen As MemoryMappedView...
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smoorke

.net

vb.net

shared-memory

memory-mapped-files

Votes: 0

Answers: 1

Latest Answer

Turns out garbage collection is the culprit here. To fix this behavior make sure to have a reference to the memory-mapped file for as long as you need the value to be read by other processes. Why it s...
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smoorke

What happens if you read from an unloaded MappedByteBuffer?

What happens if you read/write into MappedByteBuffer that is unloaded? Will the operation fail? Will it read/write the underlying file more slowly than it would if the file was memory-mapped? Will it ...
test-img

Gili

java

memory-mapped-files

Votes: 0

Answers: 1

Latest Answer

Re-reading the specification, isLoaded() does not indicate whether the file was "unmapped" but rather that the memory-map might have been swapped out. So, assuming I understand this correctl...
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Gili

Inter-process communication (C++ to C#) using Memory mapped file (IOException)

There are two processes: one written in C++ and the other written in C#. Simply, C++ process will create a file name "test.dat", map the file to its memory, and keep on writing on it. C# pro...
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vaska11

c#

c++

memory-mapped-files

Votes: 0

Answers: 1

Latest Answer

FileStream defaults to only allowing read sharing which is not compatible with how you've opened your c++ file. You need to request write sharing too: File.Open(@"...", FileMode.Open, FileAc...
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Alan Birtles

C# MemoryMappedFile not enough resources

I'm doing operations on images. Some of these operations require me to create 3 different versions of the pixel data from the image and then later on combine them and do operantions on it. For regular...
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juFo

c#

memory-mapped-files

Votes: 0

Answers: 0

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