Talking to C++ process through N-API

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#124 erstellt am 10.2.2020 3 Kommentare 0 Reaktionen 0 zugewiesene Personen Auf GitHub ansehen

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Bewertung

Schwierigkeit: 5/5
Geschätzter Aufwand: Über eine Woche
Anfängerfreundlichkeit: 20/100

Issue-Typ: Feature
Klarheit: Muss geklärt werden
Aktivitätsstatus: Veraltet
Tech-Stack: node.js
Bereich: api, distributed-systems, operating-systems

Rechercherichtung

The issue names no repository files or tests. Start by reviewing the N-API entry point and the C++ DLL, shared-memory file mapping, and separate-process communication described in the issue. Done would require a clearly scoped example or documented support path for the requested Node.js-to-C++ process communication.

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Beschreibung

Hello;
I want to send and receive data from a game simulation in a seperate C++ process, from Node.js. I want Node.js to connect to the outside internet and Node.js will need to communicate with a game simulation run in a seperate process.

Memory sharing seems to be the fastest way to do interprocess communication. Its faster than pipes or sockets, so I want to use memory sharing to do the IPC. I was thinking that N-API could be used to do this.

The question is can I use N-API to connect to a C++ DLL and create a shared memory object (file map). The DLL will be loaded into the Node.js process and it will load a DLL that has already been loaded by the C++ executable. The the file mapping of the system pagefile will be loaded into both the Node.js process and the seperate C++ process. To send something from Node.js to the C++ process, I would just call and required funtions., which would call a function in the DLL that wrote to the share memory map file. After the shared memory has been written to the, it would unblock a handle that the server has access to. The C++ process could then read the shared memory. Has anyone tried this? I mean N-API allows on to call C++ ftns in a DLL, but to call ftns in a seperate process is what I want.

Vorherrschende Sprache: C++
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