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async_hooks: remove destroyed symbol on Promises #42402

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merged 1 commit into from
Mar 21, 2022
Merged

async_hooks: remove destroyed symbol on Promises #42402

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6 changes: 1 addition & 5 deletions lib/internal/async_hooks.js
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Original file line number Diff line number Diff line change
Expand Up @@ -326,14 +326,10 @@ function promiseInitHookWithDestroyTracking(promise, parent) {
destroyTracking(promise, parent);
}

const destroyedSymbol = Symbol('destroyed');

function destroyTracking(promise, parent) {
trackPromise(promise, parent);
const asyncId = promise[async_id_symbol];
const destroyed = { destroyed: false };
promise[destroyedSymbol] = destroyed;
registerDestroyHook(promise, asyncId, destroyed);
registerDestroyHook(promise, asyncId);
}

function promiseBeforeHook(promise) {
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11 changes: 7 additions & 4 deletions src/async_wrap.cc
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Expand Up @@ -214,12 +214,13 @@ void AsyncWrap::WeakCallback(const WeakCallbackInfo<DestroyParam>& info) {

p->env->RemoveCleanupHook(DestroyParamCleanupHook, p.get());

if (!prop_bag->Get(p->env->context(), p->env->destroyed_string())
if (!prop_bag.IsEmpty() &&
!prop_bag->Get(p->env->context(), p->env->destroyed_string())
.ToLocal(&val)) {
return;
}

if (val->IsFalse()) {
if (val.IsEmpty() || val->IsFalse()) {
AsyncWrap::EmitDestroy(p->env, p->asyncId);
}
// unique_ptr goes out of scope here and pointer is deleted.
Expand All @@ -229,14 +230,16 @@ void AsyncWrap::WeakCallback(const WeakCallbackInfo<DestroyParam>& info) {
static void RegisterDestroyHook(const FunctionCallbackInfo<Value>& args) {
CHECK(args[0]->IsObject());
CHECK(args[1]->IsNumber());
CHECK(args[2]->IsObject());
CHECK(args.Length() == 2 || args[2]->IsObject());

Isolate* isolate = args.GetIsolate();
DestroyParam* p = new DestroyParam();
p->asyncId = args[1].As<Number>()->Value();
p->env = Environment::GetCurrent(args);
p->target.Reset(isolate, args[0].As<Object>());
p->propBag.Reset(isolate, args[2].As<Object>());
if (args.Length() > 2) {
p->propBag.Reset(isolate, args[2].As<Object>());
}
p->target.SetWeak(p, AsyncWrap::WeakCallback, WeakCallbackType::kParameter);
p->env->AddCleanupHook(DestroyParamCleanupHook, p);
}
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2 changes: 1 addition & 1 deletion typings/internalBinding/async_wrap.d.ts
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Expand Up @@ -107,7 +107,7 @@ declare function InternalBinding(binding: 'async_wrap'): {
promiseAfterHook: InternalAsyncWrapBinding.PromiseHook | undefined,
promiseResolveHook: InternalAsyncWrapBinding.PromiseHook | undefined
): void;
registerDestroyHook(promise: Promise<unknown>, asyncId: number, destroyed: { destroyed: boolean }): void;
registerDestroyHook(resource: object, asyncId: number, destroyed?: { destroyed: boolean }): void;
async_hook_fields: Uint32Array;
async_id_fields: Float64Array;
async_ids_stack: Float64Array;
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