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#include "async-wrap.h"
#include "async-wrap-inl.h"
#include "env.h"
#include "env-inl.h"
#include "util.h"
#include "util-inl.h"
#include "v8.h"
using v8::Context;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::Handle;
using v8::HandleScope;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::Object;
using v8::TryCatch;
using v8::Value;
using v8::kExternalUint32Array;
namespace node {
static void SetupHooks(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args.GetIsolate());
CHECK(args[0]->IsObject());
CHECK(args[1]->IsFunction());
CHECK(args[2]->IsFunction());
CHECK(args[3]->IsFunction());
// Attach Fields enum from Environment::AsyncHooks.
// Flags attached to this object are:
// - kCallInitHook (0): Tells the AsyncWrap constructor whether it should
// make a call to the init JS callback. This is disabled by default, so
// even after setting the callbacks the flag will have to be set to
// non-zero to have those callbacks called. This only affects the init
// callback. If the init callback was called, then the pre/post callbacks
// will automatically be called.
Local<Object> async_hooks_obj = args[0].As<Object>();
Environment::AsyncHooks* async_hooks = env->async_hooks();
async_hooks_obj->SetIndexedPropertiesToExternalArrayData(
async_hooks->fields(),
kExternalUint32Array,
async_hooks->fields_count());
env->set_async_hooks_init_function(args[1].As<Function>());
env->set_async_hooks_pre_function(args[2].As<Function>());
env->set_async_hooks_post_function(args[3].As<Function>());
}
static void Initialize(Handle<Object> target,
Handle<Value> unused,
Handle<Context> context) {
Environment* env = Environment::GetCurrent(context);
Isolate* isolate = env->isolate();
HandleScope scope(isolate);
NODE_SET_METHOD(target, "setupHooks", SetupHooks);
Local<Object> async_providers = Object::New(isolate);
#define V(PROVIDER) \
async_providers->Set(FIXED_ONE_BYTE_STRING(isolate, #PROVIDER), \
Integer::New(isolate, AsyncWrap::PROVIDER_ ## PROVIDER));
NODE_ASYNC_PROVIDER_TYPES(V)
#undef V
target->Set(FIXED_ONE_BYTE_STRING(isolate, "Providers"), async_providers);
}
Handle<Value> AsyncWrap::MakeCallback(const Handle<Function> cb,
int argc,
Handle<Value>* argv) {
CHECK(env()->context() == env()->isolate()->GetCurrentContext());
Local<Object> context = object();
Local<Object> process = env()->process_object();
Local<Object> domain;
bool has_domain = false;
if (env()->using_domains()) {
Local<Value> domain_v = context->Get(env()->domain_string());
has_domain = domain_v->IsObject();
if (has_domain) {
domain = domain_v.As<Object>();
if (domain->Get(env()->disposed_string())->IsTrue())
return Undefined(env()->isolate());
}
}
TryCatch try_catch;
try_catch.SetVerbose(true);
if (has_domain) {
Local<Value> enter_v = domain->Get(env()->enter_string());
if (enter_v->IsFunction()) {
enter_v.As<Function>()->Call(domain, 0, nullptr);
if (try_catch.HasCaught())
return Undefined(env()->isolate());
}
}
if (has_async_queue_) {
try_catch.SetVerbose(false);
env()->async_hooks_pre_function()->Call(context, 0, nullptr);
if (try_catch.HasCaught())
FatalError("node::AsyncWrap::MakeCallback", "pre hook threw");
try_catch.SetVerbose(true);
}
Local<Value> ret = cb->Call(context, argc, argv);
if (try_catch.HasCaught()) {
return Undefined(env()->isolate());
}
if (has_async_queue_) {
try_catch.SetVerbose(false);
env()->async_hooks_post_function()->Call(context, 0, nullptr);
if (try_catch.HasCaught())
FatalError("node::AsyncWrap::MakeCallback", "post hook threw");
try_catch.SetVerbose(true);
}
if (has_domain) {
Local<Value> exit_v = domain->Get(env()->exit_string());
if (exit_v->IsFunction()) {
exit_v.As<Function>()->Call(domain, 0, nullptr);
if (try_catch.HasCaught())
return Undefined(env()->isolate());
}
}
Environment::TickInfo* tick_info = env()->tick_info();
if (tick_info->in_tick()) {
return ret;
}
if (tick_info->length() == 0) {
env()->isolate()->RunMicrotasks();
}
if (tick_info->length() == 0) {
tick_info->set_index(0);
return ret;
}
tick_info->set_in_tick(true);
env()->tick_callback_function()->Call(process, 0, nullptr);
tick_info->set_in_tick(false);
if (try_catch.HasCaught()) {
tick_info->set_last_threw(true);
return Undefined(env()->isolate());
}
return ret;
}
} // namespace node
NODE_MODULE_CONTEXT_AWARE_BUILTIN(async_wrap, node::Initialize)
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