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Support multi-threaded Wasm (#3236)

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Replace `atomic_refcell` with `parking_lot` on wasm32.

`parking_lot` has had problems running on wasm32 before
(https://github.com/emilk/egui/issues/1401)
but it works these days.
If we have problems again we can always switch to `std::sync::Mutex`.

Closes https://github.com/emilk/egui/issues/3102
This commit is contained in:
Emil Ernerfeldt
2023-08-11 15:08:00 +02:00
committed by GitHub
parent 08fb447fb5
commit dd5285cccb
3 changed files with 19 additions and 98 deletions
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6
crates/epaint/Cargo.toml
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@@ -79,6 +79,7 @@ ahash = { version = "0.8.1", default-features = false, features = [
"std",
] }
nohash-hasher = "0.2"
parking_lot = "0.12" # Using parking_lot over std::sync::Mutex gives 50% speedups in some real-world scenarios.
#! ### Optional dependencies
bytemuck = { version = "1.7.2", optional = true, features = ["derive"] }
@@ -94,11 +95,6 @@ serde = { version = "1", optional = true, features = ["derive", "rc"] }
# native:
[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
backtrace = { version = "0.3", optional = true }
parking_lot = "0.12" # Using parking_lot over std::sync::Mutex gives 50% speedups in some real-world scenarios.
# web:
[target.'cfg(target_arch = "wasm32")'.dependencies]
atomic_refcell = "0.1" # Used instead of parking_lot on on wasm. See https://github.com/emilk/egui/issues/1401
[dev-dependencies]