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#include "async-wrap.h" |
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#include "async-wrap-inl.h" |
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#include "env.h" |
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#include "env-inl.h" |
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#include "util.h" |
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#include "util-inl.h" |
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#include "v8.h" |
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#include "v8-profiler.h" |
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using v8::Boolean; |
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using v8::Context; |
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using v8::Function; |
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using v8::FunctionCallbackInfo; |
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using v8::HandleScope; |
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using v8::HeapProfiler; |
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using v8::Integer; |
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using v8::Isolate; |
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using v8::Local; |
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using v8::MaybeLocal; |
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using v8::Number; |
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using v8::Object; |
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using v8::RetainedObjectInfo; |
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using v8::TryCatch; |
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using v8::Value; |
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namespace node { |
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static const char* const provider_names[] = { |
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#define V(PROVIDER) \ |
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#PROVIDER, |
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NODE_ASYNC_PROVIDER_TYPES(V) |
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#undef V |
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}; |
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class RetainedAsyncInfo: public RetainedObjectInfo { |
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public: |
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explicit RetainedAsyncInfo(uint16_t class_id, AsyncWrap* wrap); |
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void Dispose() override; |
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bool IsEquivalent(RetainedObjectInfo* other) override; |
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intptr_t GetHash() override; |
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const char* GetLabel() override; |
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intptr_t GetSizeInBytes() override; |
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private: |
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const char* label_; |
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const AsyncWrap* wrap_; |
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const int length_; |
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}; |
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RetainedAsyncInfo::RetainedAsyncInfo(uint16_t class_id, AsyncWrap* wrap) |
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: label_(provider_names[class_id - NODE_ASYNC_ID_OFFSET]), |
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wrap_(wrap), |
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length_(wrap->self_size()) { |
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} |
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void RetainedAsyncInfo::Dispose() { |
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delete this; |
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} |
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bool RetainedAsyncInfo::IsEquivalent(RetainedObjectInfo* other) { |
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return label_ == other->GetLabel() && |
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wrap_ == static_cast<RetainedAsyncInfo*>(other)->wrap_; |
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} |
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intptr_t RetainedAsyncInfo::GetHash() { |
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return reinterpret_cast<intptr_t>(wrap_); |
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} |
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const char* RetainedAsyncInfo::GetLabel() { |
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return label_; |
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} |
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intptr_t RetainedAsyncInfo::GetSizeInBytes() { |
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return length_; |
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} |
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RetainedObjectInfo* WrapperInfo(uint16_t class_id, Local<Value> wrapper) { |
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// No class_id should be the provider type of NONE. |
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CHECK_NE(NODE_ASYNC_ID_OFFSET, class_id); |
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CHECK(wrapper->IsObject()); |
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CHECK(!wrapper.IsEmpty()); |
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Local<Object> object = wrapper.As<Object>(); |
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CHECK_GT(object->InternalFieldCount(), 0); |
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AsyncWrap* wrap = Unwrap<AsyncWrap>(object); |
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CHECK_NE(nullptr, wrap); |
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return new RetainedAsyncInfo(class_id, wrap); |
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} |
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// end RetainedAsyncInfo |
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static void EnableHooksJS(const FunctionCallbackInfo<Value>& args) { |
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Environment* env = Environment::GetCurrent(args); |
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Local<Function> init_fn = env->async_hooks_init_function(); |
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if (init_fn.IsEmpty() || !init_fn->IsFunction()) |
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return env->ThrowTypeError("init callback is not assigned to a function"); |
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env->async_hooks()->set_enable_callbacks(1); |
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} |
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static void DisableHooksJS(const FunctionCallbackInfo<Value>& args) { |
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Environment* env = Environment::GetCurrent(args); |
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env->async_hooks()->set_enable_callbacks(0); |
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} |
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static void SetupHooks(const FunctionCallbackInfo<Value>& args) { |
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Environment* env = Environment::GetCurrent(args); |
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if (env->async_hooks()->callbacks_enabled()) |
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return env->ThrowError("hooks should not be set while also enabled"); |
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if (!args[0]->IsObject()) |
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return env->ThrowTypeError("first argument must be an object"); |
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Local<Object> fn_obj = args[0].As<Object>(); |
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Local<Value> init_v = fn_obj->Get( |
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env->context(), |
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FIXED_ONE_BYTE_STRING(env->isolate(), "init")).ToLocalChecked(); |
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Local<Value> pre_v = fn_obj->Get( |
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env->context(), |
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FIXED_ONE_BYTE_STRING(env->isolate(), "pre")).ToLocalChecked(); |
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Local<Value> post_v = fn_obj->Get( |
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env->context(), |
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FIXED_ONE_BYTE_STRING(env->isolate(), "post")).ToLocalChecked(); |
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Local<Value> destroy_v = fn_obj->Get( |
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env->context(), |
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FIXED_ONE_BYTE_STRING(env->isolate(), "destroy")).ToLocalChecked(); |
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if (!init_v->IsFunction()) |
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return env->ThrowTypeError("init callback must be a function"); |
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env->set_async_hooks_init_function(init_v.As<Function>()); |
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if (pre_v->IsFunction()) |
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env->set_async_hooks_pre_function(pre_v.As<Function>()); |
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if (post_v->IsFunction()) |
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env->set_async_hooks_post_function(post_v.As<Function>()); |
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if (destroy_v->IsFunction()) |
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env->set_async_hooks_destroy_function(destroy_v.As<Function>()); |
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} |
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static void Initialize(Local<Object> target, |
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Local<Value> unused, |
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Local<Context> context) { |
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Environment* env = Environment::GetCurrent(context); |
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Isolate* isolate = env->isolate(); |
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HandleScope scope(isolate); |
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env->SetMethod(target, "setupHooks", SetupHooks); |
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env->SetMethod(target, "disable", DisableHooksJS); |
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env->SetMethod(target, "enable", EnableHooksJS); |
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Local<Object> async_providers = Object::New(isolate); |
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#define V(PROVIDER) \ |
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async_providers->Set(FIXED_ONE_BYTE_STRING(isolate, #PROVIDER), \ |
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Integer::New(isolate, AsyncWrap::PROVIDER_ ## PROVIDER)); |
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NODE_ASYNC_PROVIDER_TYPES(V) |
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#undef V |
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target->Set(FIXED_ONE_BYTE_STRING(isolate, "Providers"), async_providers); |
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env->set_async_hooks_init_function(Local<Function>()); |
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env->set_async_hooks_pre_function(Local<Function>()); |
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env->set_async_hooks_post_function(Local<Function>()); |
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env->set_async_hooks_destroy_function(Local<Function>()); |
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} |
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void LoadAsyncWrapperInfo(Environment* env) { |
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HeapProfiler* heap_profiler = env->isolate()->GetHeapProfiler(); |
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#define V(PROVIDER) \ |
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heap_profiler->SetWrapperClassInfoProvider( \ |
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(NODE_ASYNC_ID_OFFSET + AsyncWrap::PROVIDER_ ## PROVIDER), WrapperInfo); |
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NODE_ASYNC_PROVIDER_TYPES(V) |
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#undef V |
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} |
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Local<Value> AsyncWrap::MakeCallback(const Local<Function> cb, |
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int argc, |
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Local<Value>* argv) { |
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CHECK(env()->context() == env()->isolate()->GetCurrentContext()); |
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Local<Function> pre_fn = env()->async_hooks_pre_function(); |
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Local<Function> post_fn = env()->async_hooks_post_function(); |
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Local<Value> uid = Number::New(env()->isolate(), get_uid()); |
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Local<Object> context = object(); |
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Local<Object> domain; |
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bool has_domain = false; |
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Environment::AsyncCallbackScope callback_scope(env()); |
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if (env()->using_domains()) { |
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Local<Value> domain_v = context->Get(env()->domain_string()); |
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has_domain = domain_v->IsObject(); |
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if (has_domain) { |
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domain = domain_v.As<Object>(); |
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if (domain->Get(env()->disposed_string())->IsTrue()) |
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return Local<Value>(); |
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} |
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} |
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if (has_domain) { |
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Local<Value> enter_v = domain->Get(env()->enter_string()); |
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if (enter_v->IsFunction()) { |
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if (enter_v.As<Function>()->Call(domain, 0, nullptr).IsEmpty()) { |
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FatalError("node::AsyncWrap::MakeCallback", |
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"domain enter callback threw, please report this"); |
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} |
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} |
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} |
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if (ran_init_callback() && !pre_fn.IsEmpty()) { |
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TryCatch try_catch(env()->isolate()); |
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MaybeLocal<Value> ar = pre_fn->Call(env()->context(), context, 1, &uid); |
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if (ar.IsEmpty()) { |
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ClearFatalExceptionHandlers(env()); |
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FatalException(env()->isolate(), try_catch); |
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return Local<Value>(); |
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} |
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} |
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Local<Value> ret = cb->Call(context, argc, argv); |
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if (ran_init_callback() && !post_fn.IsEmpty()) { |
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Local<Value> did_throw = Boolean::New(env()->isolate(), ret.IsEmpty()); |
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Local<Value> vals[] = { uid, did_throw }; |
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TryCatch try_catch(env()->isolate()); |
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MaybeLocal<Value> ar = |
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post_fn->Call(env()->context(), context, arraysize(vals), vals); |
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if (ar.IsEmpty()) { |
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ClearFatalExceptionHandlers(env()); |
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FatalException(env()->isolate(), try_catch); |
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return Local<Value>(); |
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} |
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} |
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if (ret.IsEmpty()) { |
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return ret; |
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} |
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if (has_domain) { |
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Local<Value> exit_v = domain->Get(env()->exit_string()); |
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if (exit_v->IsFunction()) { |
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if (exit_v.As<Function>()->Call(domain, 0, nullptr).IsEmpty()) { |
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FatalError("node::AsyncWrap::MakeCallback", |
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"domain exit callback threw, please report this"); |
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} |
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} |
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} |
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if (callback_scope.in_makecallback()) { |
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return ret; |
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} |
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Environment::TickInfo* tick_info = env()->tick_info(); |
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if (tick_info->length() == 0) { |
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env()->isolate()->RunMicrotasks(); |
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} |
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Local<Object> process = env()->process_object(); |
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if (tick_info->length() == 0) { |
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tick_info->set_index(0); |
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return ret; |
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} |
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if (env()->tick_callback_function()->Call(process, 0, nullptr).IsEmpty()) { |
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return Local<Value>(); |
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} |
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return ret; |
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} |
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} // namespace node |
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NODE_MODULE_CONTEXT_AWARE_BUILTIN(async_wrap, node::Initialize) |