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LibJS: Always allocate ExecutionContext objects on the malloc heap

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Instead of allocating these in a mixture of ways, we now always put
them on the malloc heap, and keep an intrusive linked list of them
that we can iterate for GC marking purposes.
This commit is contained in:
Andreas Kling 2023-11-27 16:45:45 +01:00
parent 845da3901d
commit 3dc5f467a8
38 changed files with 251 additions and 217 deletions
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9
Userland/Libraries/LibJS/Runtime/AsyncFunctionDriverWrapper.cpp
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@ -45,7 +45,8 @@ ThrowCompletionOr<void> AsyncFunctionDriverWrapper::await(JS::Value value)
auto& realm = *vm.current_realm();
// 1. Let asyncContext be the running execution context.
m_suspended_execution_context = vm.running_execution_context().copy();
if (!m_suspended_execution_context)
m_suspended_execution_context = vm.running_execution_context().copy();
// 2. Let promise be ? PromiseResolve(%Promise%, value).
auto* promise_object = TRY(promise_resolve(vm, realm.intrinsics().promise_constructor(), value));
@ -61,7 +62,7 @@ ThrowCompletionOr<void> AsyncFunctionDriverWrapper::await(JS::Value value)
// FIXME: b. Suspend prevContext.
// c. Push asyncContext onto the execution context stack; asyncContext is now the running execution context.
TRY(vm.push_execution_context(m_suspended_execution_context.value(), {}));
TRY(vm.push_execution_context(*m_suspended_execution_context, {}));
// d. Resume the suspended evaluation of asyncContext using NormalCompletion(v) as the result of the operation that
// suspended it.
@ -89,7 +90,7 @@ ThrowCompletionOr<void> AsyncFunctionDriverWrapper::await(JS::Value value)
// FIXME: b. Suspend prevContext.
// c. Push asyncContext onto the execution context stack; asyncContext is now the running execution context.
TRY(vm.push_execution_context(m_suspended_execution_context.value(), {}));
TRY(vm.push_execution_context(*m_suspended_execution_context, {}));
// d. Resume the suspended evaluation of asyncContext using ThrowCompletion(reason) as the result of the operation that
// suspended it.
@ -191,8 +192,6 @@ void AsyncFunctionDriverWrapper::visit_edges(Cell::Visitor& visitor)
visitor.visit(m_top_level_promise);
if (m_current_promise)
visitor.visit(m_current_promise);
if (m_suspended_execution_context.has_value())
m_suspended_execution_context->visit_edges(visitor);
}
}