MutexProtected: A C++ Pattern for Easier Concurrency

• serenity

  240 28,555 10.0 C++

  The Serenity Operating System 🐞

  

Another feature of the MutexProtected implementation in SerenityOS is the ability to either obtain an exclusive lock (writable) or a shared lock (read-only). A shared lock provides a const reference to the protected value and therefore enforces read-only access semantics at compile-time by leveraging the C++ type system (specifically, const-correctness).

The initial PR introducing the ancestor to MutexProtected has some details on the motivation behind it and also demonstrates a bunch of incorrect locking that the C++ compiler caught when introducing it: https://github.com/SerenityOS/serenity/pull/8851

• Folly

  90 27,072 9.8 C++

  An open-source C++ library developed and used at Facebook.

  

How does this compare with:

* Using std::atomic ? https://en.cppreference.com/w/cpp/atomic/atomic

* folly::Synchronized, mentioned by ot57? https://github.com/facebook/folly/blob/main/folly/docs/Synch...

* Boost synchronized data structures, -mentioned by mchicken 53? https://www.boost.org/doc/libs/1_81_0/doc/html/thread/sds.ht...

?

... it looks like the SerenityOS people developed this without considering the C++ ecosystem of today.

• WorkOS

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• rustex

  3 10 0.0 C++

  Rust-style mutex type for C++

Adding my favorite to the pile: https://github.com/dragazo/rustex

• sdk

  3 4 6.9 Shell

  SDK files for building i-score (by ossia)

  

Boost isn't gigabytes in size wat are you talking about. All the headers are here in this 14mb archive: https://github.com/ossia/sdk/releases/download/sdk25/boost_1... and that is enough to use 90% of the boost libs as they are mostly header only

• chromium

  224 17,574 10.0

  The official GitHub mirror of the Chromium source

  

Chrome does this, more or less, with different syntax. https://chromium.googlesource.com/chromium/src/+/main/docs/t...

• InfluxDB

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