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123 lines
3.3 KiB
123 lines
3.3 KiB
#ifndef SRC_ASYNC_WRAP_INL_H_
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#define SRC_ASYNC_WRAP_INL_H_
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#include "async-wrap.h"
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#include "base-object.h"
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#include "base-object-inl.h"
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#include "env.h"
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#include "env-inl.h"
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#include "node_internals.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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namespace node {
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inline AsyncWrap::AsyncWrap(Environment* env,
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v8::Local<v8::Object> object,
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ProviderType provider,
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AsyncWrap* parent)
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: BaseObject(env, object), bits_(static_cast<uint32_t>(provider) << 1),
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uid_(env->get_async_wrap_uid()) {
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CHECK_NE(provider, PROVIDER_NONE);
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CHECK_GE(object->InternalFieldCount(), 1);
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// Shift provider value over to prevent id collision.
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persistent().SetWrapperClassId(NODE_ASYNC_ID_OFFSET + provider);
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v8::Local<v8::Function> init_fn = env->async_hooks_init_function();
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// No init callback exists, no reason to go on.
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if (init_fn.IsEmpty())
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return;
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// If async wrap callbacks are disabled and no parent was passed that has
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// run the init callback then return.
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if (!env->async_wrap_callbacks_enabled() &&
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(parent == nullptr || !parent->ran_init_callback()))
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return;
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v8::HandleScope scope(env->isolate());
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v8::Local<v8::Value> argv[] = {
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v8::Integer::New(env->isolate(), get_uid()),
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v8::Int32::New(env->isolate(), provider),
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Null(env->isolate()),
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Null(env->isolate())
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};
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if (parent != nullptr) {
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argv[2] = v8::Integer::New(env->isolate(), parent->get_uid());
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argv[3] = parent->object();
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}
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v8::TryCatch try_catch(env->isolate());
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v8::MaybeLocal<v8::Value> ret =
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init_fn->Call(env->context(), object, arraysize(argv), argv);
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if (ret.IsEmpty()) {
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ClearFatalExceptionHandlers(env);
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FatalException(env->isolate(), try_catch);
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}
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bits_ |= 1; // ran_init_callback() is true now.
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}
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inline AsyncWrap::~AsyncWrap() {
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if (!ran_init_callback())
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return;
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v8::Local<v8::Function> fn = env()->async_hooks_destroy_function();
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if (!fn.IsEmpty()) {
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v8::HandleScope scope(env()->isolate());
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v8::Local<v8::Value> uid = v8::Integer::New(env()->isolate(), get_uid());
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v8::TryCatch try_catch(env()->isolate());
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v8::MaybeLocal<v8::Value> ret =
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fn->Call(env()->context(), v8::Null(env()->isolate()), 1, &uid);
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if (ret.IsEmpty()) {
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ClearFatalExceptionHandlers(env());
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FatalException(env()->isolate(), try_catch);
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}
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}
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}
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inline bool AsyncWrap::ran_init_callback() const {
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return static_cast<bool>(bits_ & 1);
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}
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inline AsyncWrap::ProviderType AsyncWrap::provider_type() const {
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return static_cast<ProviderType>(bits_ >> 1);
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}
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inline int64_t AsyncWrap::get_uid() const {
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return uid_;
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}
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inline v8::Local<v8::Value> AsyncWrap::MakeCallback(
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const v8::Local<v8::String> symbol,
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int argc,
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v8::Local<v8::Value>* argv) {
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v8::Local<v8::Value> cb_v = object()->Get(symbol);
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CHECK(cb_v->IsFunction());
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return MakeCallback(cb_v.As<v8::Function>(), argc, argv);
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}
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inline v8::Local<v8::Value> AsyncWrap::MakeCallback(
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uint32_t index,
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int argc,
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v8::Local<v8::Value>* argv) {
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v8::Local<v8::Value> cb_v = object()->Get(index);
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CHECK(cb_v->IsFunction());
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return MakeCallback(cb_v.As<v8::Function>(), argc, argv);
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}
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} // namespace node
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#endif // SRC_ASYNC_WRAP_INL_H_
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