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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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20
Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
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@ -638,31 +638,31 @@ ThrowCompletionOr<Value> perform_eval(VM& vm, Value x, CallerMode strict_caller,
// FIXME: We don't have this concept yet.
// 20. Let evalContext be a new ECMAScript code execution context.
ExecutionContext eval_context(vm.heap());
auto eval_context = ExecutionContext::create(vm.heap());
// 21. Set evalContext's Function to null.
// NOTE: This was done in the construction of eval_context.
// 22. Set evalContext's Realm to evalRealm.
eval_context.realm = &eval_realm;
eval_context->realm = &eval_realm;
// 23. Set evalContext's ScriptOrModule to runningContext's ScriptOrModule.
eval_context.script_or_module = running_context.script_or_module;
eval_context->script_or_module = running_context.script_or_module;
// 24. Set evalContext's VariableEnvironment to varEnv.
eval_context.variable_environment = variable_environment;
eval_context->variable_environment = variable_environment;
// 25. Set evalContext's LexicalEnvironment to lexEnv.
eval_context.lexical_environment = lexical_environment;
eval_context->lexical_environment = lexical_environment;
// 26. Set evalContext's PrivateEnvironment to privateEnv.
eval_context.private_environment = private_environment;
eval_context->private_environment = private_environment;
// NOTE: This isn't in the spec, but we require it.
eval_context.is_strict_mode = strict_eval;
eval_context->is_strict_mode = strict_eval;
// 27. Push evalContext onto the execution context stack; evalContext is now the running execution context.
TRY(vm.push_execution_context(eval_context, {}));
TRY(vm.push_execution_context(*eval_context, {}));
// NOTE: We use a ScopeGuard to automatically pop the execution context when any of the `TRY`s below return a throw completion.
ScopeGuard pop_guard = [&] {
@ -1025,7 +1025,7 @@ ThrowCompletionOr<void> eval_declaration_instantiation(VM& vm, Program const& pr
}
// 10.4.4.6 CreateUnmappedArgumentsObject ( argumentsList ), https://tc39.es/ecma262/#sec-createunmappedargumentsobject
Object* create_unmapped_arguments_object(VM& vm, Span<Value> arguments)
Object* create_unmapped_arguments_object(VM& vm, ReadonlySpan<Value> arguments)
{
auto& realm = *vm.current_realm();
@ -1065,7 +1065,7 @@ Object* create_unmapped_arguments_object(VM& vm, Span<Value> arguments)
}
// 10.4.4.7 CreateMappedArgumentsObject ( func, formals, argumentsList, env ), https://tc39.es/ecma262/#sec-createmappedargumentsobject
Object* create_mapped_arguments_object(VM& vm, FunctionObject& function, Vector<FunctionParameter> const& formals, Span<Value> arguments, Environment& environment)
Object* create_mapped_arguments_object(VM& vm, FunctionObject& function, Vector<FunctionParameter> const& formals, ReadonlySpan<Value> arguments, Environment& environment)
{
auto& realm = *vm.current_realm();