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interprocess: Shared memory and control structures for IPC

[ bsd3, library, system ] [ Propose Tags ]

Provides portable shared memory allocator and semaphores. Can be used for interprocess communication. Refer to README.md for further information.

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Versions [RSS] 0.1.0.0, 0.2.0.0, 0.2.0.1, 0.2.1.0
Dependencies base (>=4.7 && <5), interprocess, typed-process (>=0.2) [details]
License BSD-3-Clause
Copyright (c) 2018 Artem Chirkin
Author Artem Chirkin
Maintainer chirkin@arch.ethz.ch
Category system
Home page https://github.com/achirkin/interprocess
Uploaded by achirkin at 2018-06-01T11:32:15Z
Distributions NixOS:0.2.1.0
Reverse Dependencies 1 direct, 0 indirect [details]
Executables interprocess-wait-qsem, interprocess-concurrent-malloc
Downloads 1808 total (12 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2018-06-01 [all 1 reports]

Readme for interprocess-0.1.0.0

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interprocess

WIP: platform-independent interprocess communication.

The core feature is shared memory allocator implemented using POSIX mmap and Windows CreateFileMapping. You can create as many allocators as you want (as your RAM can afford) and concurrently malloc and free memory in different processes using them.

Features and TODO:

  • Foreign.SharedPtr -- malloc, realloc and free in the shared memory region that can be accessed by multiple processes.
  • Semaphores
  • Mutexes (not sure if need this)
  • Mutable variables via Storable instance plus garbage collection.
  • Proper error messages
  • Debug, verbose mode

The idea of the library is to address GHC stop-the-world GC problem:

  1. Create several instances of your program in different isolated processes using e.g. typed-process library.
  2. Establish shared memory and semaphore usage via this program
  3. Garbage collection events in one process do not affect another one at all. Profit!