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馃洡 threads #14

binji opened this Issue Oct 16, 2018 · 0 comments


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binji commented Oct 16, 2018

This is a tracking issue for a post-MVP feature
It will be updated as the issue progresses.

Topic threads
Champion Ben Smith @binji
Status in progress
Phase Feature proposal
Linked issues WebAssembly/design#992, WebAssembly/design#950, WebAssembly/design#730, WebAssembly/design#485, WebAssembly/design#314, WebAssembly/design#300, WebAssembly/design#104
Linked repositories


Provide low-level buildings blocks for pthreads-style shared memory: shared memory between threads, atomics and futexes.

New atomic memory operators, including loads/stores annotated with their atomic ordering property, will follow a model compatible with the C++11 memory model (with some differences), similarly to the PNaCl atomic support and the SharedArrayBuffer support in JavaScript. Even when there are data races, WebAssembly will ensure that the nondeterminism remains limited and local.

There is ongoing work to formalize the memory model used by SharedArrayBuffer. This can be used by WebAssembly threads, since both JavaScript and WebAssembly are intended to be able to communicate through SharedArrayBuffer.

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