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#include "node.h"
#include "env-inl.h"
#include "node_internals.h"
#include "v8.h"
#include <atomic>
namespace node {
using v8::Array;
using v8::Context;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::Isolate;
using v8::kPromiseHandlerAddedAfterReject;
using v8::kPromiseRejectAfterResolved;
using v8::kPromiseRejectWithNoHandler;
using v8::kPromiseResolveAfterResolved;
using v8::Local;
using v8::MaybeLocal;
using v8::Number;
using v8::Object;
using v8::Promise;
using v8::PromiseRejectEvent;
using v8::PromiseRejectMessage;
using v8::String;
using v8::Value;
void RunMicrotasks(const FunctionCallbackInfo<Value>& args) {
args.GetIsolate()->RunMicrotasks();
}
void SetupTraceCategoryState(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
CHECK(args[0]->IsFunction());
env->set_trace_category_state_function(args[0].As<Function>());
}
void SetupNextTick(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Isolate* isolate = env->isolate();
Local<Context> context = env->context();
CHECK(args[0]->IsFunction());
env->set_tick_callback_function(args[0].As<Function>());
Local<Function> run_microtasks_fn =
env->NewFunctionTemplate(RunMicrotasks)->GetFunction(context)
.ToLocalChecked();
run_microtasks_fn->SetName(FIXED_ONE_BYTE_STRING(isolate, "runMicrotasks"));
Local<Value> ret[] = {
env->tick_info()->fields().GetJSArray(),
run_microtasks_fn
};
args.GetReturnValue().Set(Array::New(isolate, ret, arraysize(ret)));
}
void PromiseRejectCallback(PromiseRejectMessage message) {
static std::atomic<uint64_t> unhandledRejections{0};
static std::atomic<uint64_t> rejectionsHandledAfter{0};
Local<Promise> promise = message.GetPromise();
Isolate* isolate = promise->GetIsolate();
PromiseRejectEvent event = message.GetEvent();
Environment* env = Environment::GetCurrent(isolate);
if (env == nullptr) return;
Local<Function> callback = env->promise_handler_function();
Local<Value> value;
Local<Value> type = Number::New(env->isolate(), event);
if (event == kPromiseRejectWithNoHandler) {
value = message.GetValue();
unhandledRejections++;
TRACE_COUNTER2(TRACING_CATEGORY_NODE2(promises, rejections),
"rejections",
"unhandled", unhandledRejections,
"handledAfter", rejectionsHandledAfter);
} else if (event == kPromiseHandlerAddedAfterReject) {
value = Undefined(isolate);
rejectionsHandledAfter++;
TRACE_COUNTER2(TRACING_CATEGORY_NODE2(promises, rejections),
"rejections",
"unhandled", unhandledRejections,
"handledAfter", rejectionsHandledAfter);
} else if (event == kPromiseResolveAfterResolved) {
value = message.GetValue();
} else if (event == kPromiseRejectAfterResolved) {
value = message.GetValue();
} else {
return;
}
if (value.IsEmpty()) {
value = Undefined(isolate);
}
Local<Value> args[] = { type, promise, value };
MaybeLocal<Value> ret = callback->Call(env->context(),
Undefined(isolate),
arraysize(args),
args);
if (!ret.IsEmpty() && ret.ToLocalChecked()->IsTrue())
env->tick_info()->promise_rejections_toggle_on();
}
void SetupPromises(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
Isolate* isolate = env->isolate();
CHECK(args[0]->IsFunction());
CHECK(args[1]->IsObject());
Local<Object> constants = args[1].As<Object>();
NODE_DEFINE_CONSTANT(constants, kPromiseRejectWithNoHandler);
NODE_DEFINE_CONSTANT(constants, kPromiseHandlerAddedAfterReject);
NODE_DEFINE_CONSTANT(constants, kPromiseResolveAfterResolved);
NODE_DEFINE_CONSTANT(constants, kPromiseRejectAfterResolved);
isolate->SetPromiseRejectCallback(PromiseRejectCallback);
env->set_promise_handler_function(args[0].As<Function>());
}
#define BOOTSTRAP_METHOD(name, fn) env->SetMethod(bootstrapper, #name, fn)
// The Bootstrapper object is an ephemeral object that is used only during
// the bootstrap process of the Node.js environment. A reference to the
// bootstrap object must not be kept around after the bootstrap process
// completes so that it can be gc'd as soon as possible.
void SetupBootstrapObject(Environment* env,
Local<Object> bootstrapper) {
BOOTSTRAP_METHOD(_setupTraceCategoryState, SetupTraceCategoryState);
BOOTSTRAP_METHOD(_setupNextTick, SetupNextTick);
BOOTSTRAP_METHOD(_setupPromises, SetupPromises);
BOOTSTRAP_METHOD(_chdir, Chdir);
BOOTSTRAP_METHOD(_cpuUsage, CPUUsage);
BOOTSTRAP_METHOD(_hrtime, Hrtime);
BOOTSTRAP_METHOD(_hrtimeBigInt, HrtimeBigInt);
BOOTSTRAP_METHOD(_memoryUsage, MemoryUsage);
BOOTSTRAP_METHOD(_rawDebug, RawDebug);
BOOTSTRAP_METHOD(_umask, Umask);
#if defined(__POSIX__) && !defined(__ANDROID__) && !defined(__CloudABI__)
if (env->is_main_thread()) {
BOOTSTRAP_METHOD(_initgroups, InitGroups);
BOOTSTRAP_METHOD(_setegid, SetEGid);
BOOTSTRAP_METHOD(_seteuid, SetEUid);
BOOTSTRAP_METHOD(_setgid, SetGid);
BOOTSTRAP_METHOD(_setuid, SetUid);
BOOTSTRAP_METHOD(_setgroups, SetGroups);
}
#endif // __POSIX__ && !defined(__ANDROID__) && !defined(__CloudABI__)
Local<String> should_abort_on_uncaught_toggle =
FIXED_ONE_BYTE_STRING(env->isolate(), "_shouldAbortOnUncaughtToggle");
CHECK(bootstrapper->Set(env->context(),
should_abort_on_uncaught_toggle,
env->should_abort_on_uncaught_toggle().GetJSArray())
.FromJust());
}
#undef BOOTSTRAP_METHOD
namespace symbols {
void Initialize(Local<Object> target,
Local<Value> unused,
Local<Context> context,
void* priv) {
Environment* env = Environment::GetCurrent(context);
#define V(PropertyName, StringValue) \
target->Set(env->context(), \
env->PropertyName()->Name(), \
env->PropertyName()).FromJust();
PER_ISOLATE_SYMBOL_PROPERTIES(V)
#undef V
}
} // namespace symbols
} // namespace node
NODE_MODULE_CONTEXT_AWARE_INTERNAL(symbols, node::symbols::Initialize)
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