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LibJS: Implement Atomics.exchange
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4 changed files with 95 additions and 0 deletions
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@ -119,6 +119,7 @@ void AtomicsObject::initialize(GlobalObject& global_object)
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u8 attr = Attribute::Writable | Attribute::Configurable;
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define_native_function(vm.names.add, add, 3, attr);
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define_native_function(vm.names.and_, and_, 3, attr);
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define_native_function(vm.names.exchange, exchange, 3, attr);
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define_native_function(vm.names.load, load, 2, attr);
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define_native_function(vm.names.or_, or_, 3, attr);
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define_native_function(vm.names.store, store, 3, attr);
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@ -165,6 +166,24 @@ JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::and_)
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VERIFY_NOT_REACHED();
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}
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// 25.4.6 Atomics.exchange ( typedArray, index, value ), https://tc39.es/ecma262/#sec-atomics.exchange
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JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::exchange)
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{
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auto* typed_array = typed_array_from(global_object, vm.argument(0));
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if (!typed_array)
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return {};
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auto atomic_exchange = [](auto* storage, auto value) { return AK::atomic_exchange(storage, value); };
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#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, Type) \
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if (is<ClassName>(typed_array)) \
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return perform_atomic_operation<Type>(global_object, *typed_array, move(atomic_exchange));
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JS_ENUMERATE_TYPED_ARRAYS
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#undef __JS_ENUMERATE
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VERIFY_NOT_REACHED();
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}
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// 25.4.8 Atomics.load ( typedArray, index ), https://tc39.es/ecma262/#sec-atomics.load
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JS_DEFINE_NATIVE_FUNCTION(AtomicsObject::load)
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{
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