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769 lines (658 loc) · 24.5 KB
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#include "node.h"
#include "node_context_data.h"
#include "node_errors.h"
#include "node_internals.h"
#include "node_native_module_env.h"
#include "node_platform.h"
#include "node_v8_platform-inl.h"
#include "uv.h"
#if HAVE_INSPECTOR
#include "inspector/worker_inspector.h" // ParentInspectorHandle
#endif
namespace node {
using errors::TryCatchScope;
using v8::Array;
using v8::Context;
using v8::EscapableHandleScope;
using v8::Function;
using v8::FunctionCallbackInfo;
using v8::HandleScope;
using v8::Isolate;
using v8::Just;
using v8::Local;
using v8::Maybe;
using v8::MaybeLocal;
using v8::Nothing;
using v8::Null;
using v8::Object;
using v8::ObjectTemplate;
using v8::Private;
using v8::PropertyDescriptor;
using v8::SealHandleScope;
using v8::String;
using v8::Value;
bool AllowWasmCodeGenerationCallback(Local<Context> context,
Local<String>) {
Local<Value> wasm_code_gen =
context->GetEmbedderData(ContextEmbedderIndex::kAllowWasmCodeGeneration);
return wasm_code_gen->IsUndefined() || wasm_code_gen->IsTrue();
}
bool ShouldAbortOnUncaughtException(Isolate* isolate) {
DebugSealHandleScope scope(isolate);
Environment* env = Environment::GetCurrent(isolate);
return env != nullptr &&
(env->is_main_thread() || !env->is_stopping()) &&
env->abort_on_uncaught_exception() &&
env->should_abort_on_uncaught_toggle()[0] &&
!env->inside_should_not_abort_on_uncaught_scope();
}
MaybeLocal<Value> PrepareStackTraceCallback(Local<Context> context,
Local<Value> exception,
Local<Array> trace) {
Environment* env = Environment::GetCurrent(context);
if (env == nullptr) {
return exception->ToString(context).FromMaybe(Local<Value>());
}
Local<Function> prepare = env->prepare_stack_trace_callback();
if (prepare.IsEmpty()) {
return exception->ToString(context).FromMaybe(Local<Value>());
}
Local<Value> args[] = {
context->Global(),
exception,
trace,
};
// This TryCatch + Rethrow is required by V8 due to details around exception
// handling there. For C++ callbacks, V8 expects a scheduled exception (which
// is what ReThrow gives us). Just returning the empty MaybeLocal would leave
// us with a pending exception.
TryCatchScope try_catch(env);
MaybeLocal<Value> result = prepare->Call(
context, Undefined(env->isolate()), arraysize(args), args);
if (try_catch.HasCaught() && !try_catch.HasTerminated()) {
try_catch.ReThrow();
}
return result;
}
void* NodeArrayBufferAllocator::Allocate(size_t size) {
void* ret;
if (zero_fill_field_ || per_process::cli_options->zero_fill_all_buffers)
ret = UncheckedCalloc(size);
else
ret = UncheckedMalloc(size);
if (LIKELY(ret != nullptr))
total_mem_usage_.fetch_add(size, std::memory_order_relaxed);
return ret;
}
void* NodeArrayBufferAllocator::AllocateUninitialized(size_t size) {
void* ret = node::UncheckedMalloc(size);
if (LIKELY(ret != nullptr))
total_mem_usage_.fetch_add(size, std::memory_order_relaxed);
return ret;
}
void* NodeArrayBufferAllocator::Reallocate(
void* data, size_t old_size, size_t size) {
void* ret = UncheckedRealloc<char>(static_cast<char*>(data), size);
if (LIKELY(ret != nullptr) || UNLIKELY(size == 0))
total_mem_usage_.fetch_add(size - old_size, std::memory_order_relaxed);
return ret;
}
void NodeArrayBufferAllocator::Free(void* data, size_t size) {
total_mem_usage_.fetch_sub(size, std::memory_order_relaxed);
free(data);
}
DebuggingArrayBufferAllocator::~DebuggingArrayBufferAllocator() {
CHECK(allocations_.empty());
}
void* DebuggingArrayBufferAllocator::Allocate(size_t size) {
Mutex::ScopedLock lock(mutex_);
void* data = NodeArrayBufferAllocator::Allocate(size);
RegisterPointerInternal(data, size);
return data;
}
void* DebuggingArrayBufferAllocator::AllocateUninitialized(size_t size) {
Mutex::ScopedLock lock(mutex_);
void* data = NodeArrayBufferAllocator::AllocateUninitialized(size);
RegisterPointerInternal(data, size);
return data;
}
void DebuggingArrayBufferAllocator::Free(void* data, size_t size) {
Mutex::ScopedLock lock(mutex_);
UnregisterPointerInternal(data, size);
NodeArrayBufferAllocator::Free(data, size);
}
void* DebuggingArrayBufferAllocator::Reallocate(void* data,
size_t old_size,
size_t size) {
Mutex::ScopedLock lock(mutex_);
void* ret = NodeArrayBufferAllocator::Reallocate(data, old_size, size);
if (ret == nullptr) {
if (size == 0) // i.e. equivalent to free().
UnregisterPointerInternal(data, old_size);
return nullptr;
}
if (data != nullptr) {
auto it = allocations_.find(data);
CHECK_NE(it, allocations_.end());
allocations_.erase(it);
}
RegisterPointerInternal(ret, size);
return ret;
}
void DebuggingArrayBufferAllocator::RegisterPointer(void* data, size_t size) {
Mutex::ScopedLock lock(mutex_);
NodeArrayBufferAllocator::RegisterPointer(data, size);
RegisterPointerInternal(data, size);
}
void DebuggingArrayBufferAllocator::UnregisterPointer(void* data, size_t size) {
Mutex::ScopedLock lock(mutex_);
NodeArrayBufferAllocator::UnregisterPointer(data, size);
UnregisterPointerInternal(data, size);
}
void DebuggingArrayBufferAllocator::UnregisterPointerInternal(void* data,
size_t size) {
if (data == nullptr) return;
auto it = allocations_.find(data);
CHECK_NE(it, allocations_.end());
if (size > 0) {
// We allow allocations with size 1 for 0-length buffers to avoid having
// to deal with nullptr values.
CHECK_EQ(it->second, size);
}
allocations_.erase(it);
}
void DebuggingArrayBufferAllocator::RegisterPointerInternal(void* data,
size_t size) {
if (data == nullptr) return;
CHECK_EQ(allocations_.count(data), 0);
allocations_[data] = size;
}
std::unique_ptr<ArrayBufferAllocator> ArrayBufferAllocator::Create(bool debug) {
if (debug || per_process::cli_options->debug_arraybuffer_allocations)
return std::make_unique<DebuggingArrayBufferAllocator>();
else
return std::make_unique<NodeArrayBufferAllocator>();
}
ArrayBufferAllocator* CreateArrayBufferAllocator() {
return ArrayBufferAllocator::Create().release();
}
void FreeArrayBufferAllocator(ArrayBufferAllocator* allocator) {
delete allocator;
}
void SetIsolateCreateParamsForNode(Isolate::CreateParams* params) {
const uint64_t constrained_memory = uv_get_constrained_memory();
const uint64_t total_memory = constrained_memory > 0 ?
std::min(uv_get_total_memory(), constrained_memory) :
uv_get_total_memory();
if (total_memory > 0) {
// V8 defaults to 700MB or 1.4GB on 32 and 64 bit platforms respectively.
// This default is based on browser use-cases. Tell V8 to configure the
// heap based on the actual physical memory.
params->constraints.ConfigureDefaults(total_memory, 0);
}
params->embedder_wrapper_object_index = BaseObject::InternalFields::kSlot;
params->embedder_wrapper_type_index = std::numeric_limits<int>::max();
}
void SetIsolateErrorHandlers(v8::Isolate* isolate, const IsolateSettings& s) {
if (s.flags & MESSAGE_LISTENER_WITH_ERROR_LEVEL)
isolate->AddMessageListenerWithErrorLevel(
errors::PerIsolateMessageListener,
Isolate::MessageErrorLevel::kMessageError |
Isolate::MessageErrorLevel::kMessageWarning);
auto* abort_callback = s.should_abort_on_uncaught_exception_callback ?
s.should_abort_on_uncaught_exception_callback :
ShouldAbortOnUncaughtException;
isolate->SetAbortOnUncaughtExceptionCallback(abort_callback);
auto* fatal_error_cb = s.fatal_error_callback ?
s.fatal_error_callback : OnFatalError;
isolate->SetFatalErrorHandler(fatal_error_cb);
if ((s.flags & SHOULD_NOT_SET_PREPARE_STACK_TRACE_CALLBACK) == 0) {
auto* prepare_stack_trace_cb = s.prepare_stack_trace_callback ?
s.prepare_stack_trace_callback : PrepareStackTraceCallback;
isolate->SetPrepareStackTraceCallback(prepare_stack_trace_cb);
}
}
void SetIsolateMiscHandlers(v8::Isolate* isolate, const IsolateSettings& s) {
isolate->SetMicrotasksPolicy(s.policy);
auto* allow_wasm_codegen_cb = s.allow_wasm_code_generation_callback ?
s.allow_wasm_code_generation_callback : AllowWasmCodeGenerationCallback;
isolate->SetAllowWasmCodeGenerationCallback(allow_wasm_codegen_cb);
if ((s.flags & SHOULD_NOT_SET_PROMISE_REJECTION_CALLBACK) == 0) {
auto* promise_reject_cb = s.promise_reject_callback ?
s.promise_reject_callback : PromiseRejectCallback;
isolate->SetPromiseRejectCallback(promise_reject_cb);
}
if (s.flags & DETAILED_SOURCE_POSITIONS_FOR_PROFILING)
v8::CpuProfiler::UseDetailedSourcePositionsForProfiling(isolate);
}
void SetIsolateUpForNode(v8::Isolate* isolate,
const IsolateSettings& settings) {
SetIsolateErrorHandlers(isolate, settings);
SetIsolateMiscHandlers(isolate, settings);
}
void SetIsolateUpForNode(v8::Isolate* isolate) {
IsolateSettings settings;
SetIsolateUpForNode(isolate, settings);
}
// TODO(joyeecheung): we may want to expose this, but then we need to be
// careful about what we override in the params.
Isolate* NewIsolate(Isolate::CreateParams* params,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform) {
Isolate* isolate = Isolate::Allocate();
if (isolate == nullptr) return nullptr;
// Register the isolate on the platform before the isolate gets initialized,
// so that the isolate can access the platform during initialization.
platform->RegisterIsolate(isolate, event_loop);
SetIsolateCreateParamsForNode(params);
Isolate::Initialize(isolate, *params);
SetIsolateUpForNode(isolate);
return isolate;
}
Isolate* NewIsolate(ArrayBufferAllocator* allocator,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform) {
Isolate::CreateParams params;
if (allocator != nullptr) params.array_buffer_allocator = allocator;
return NewIsolate(¶ms, event_loop, platform);
}
Isolate* NewIsolate(std::shared_ptr<ArrayBufferAllocator> allocator,
uv_loop_t* event_loop,
MultiIsolatePlatform* platform) {
Isolate::CreateParams params;
if (allocator) params.array_buffer_allocator_shared = allocator;
return NewIsolate(¶ms, event_loop, platform);
}
IsolateData* CreateIsolateData(Isolate* isolate,
uv_loop_t* loop,
MultiIsolatePlatform* platform,
ArrayBufferAllocator* allocator) {
return new IsolateData(isolate, loop, platform, allocator);
}
void FreeIsolateData(IsolateData* isolate_data) {
delete isolate_data;
}
InspectorParentHandle::~InspectorParentHandle() {}
// Hide the internal handle class from the public API.
#if HAVE_INSPECTOR
struct InspectorParentHandleImpl : public InspectorParentHandle {
std::unique_ptr<inspector::ParentInspectorHandle> impl;
explicit InspectorParentHandleImpl(
std::unique_ptr<inspector::ParentInspectorHandle>&& impl)
: impl(std::move(impl)) {}
};
#endif
Environment* CreateEnvironment(
IsolateData* isolate_data,
Local<Context> context,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args,
EnvironmentFlags::Flags flags,
ThreadId thread_id,
std::unique_ptr<InspectorParentHandle> inspector_parent_handle) {
Isolate* isolate = context->GetIsolate();
HandleScope handle_scope(isolate);
Context::Scope context_scope(context);
// TODO(addaleax): This is a much better place for parsing per-Environment
// options than the global parse call.
Environment* env = new Environment(
isolate_data, context, args, exec_args, nullptr, flags, thread_id);
#if HAVE_INSPECTOR
if (env->should_create_inspector()) {
if (inspector_parent_handle) {
env->InitializeInspector(
std::move(static_cast<InspectorParentHandleImpl*>(
inspector_parent_handle.get())->impl));
} else {
env->InitializeInspector({});
}
}
#endif
if (env->RunBootstrapping().IsEmpty()) {
FreeEnvironment(env);
return nullptr;
}
return env;
}
void FreeEnvironment(Environment* env) {
Isolate* isolate = env->isolate();
Isolate::DisallowJavascriptExecutionScope disallow_js(isolate,
Isolate::DisallowJavascriptExecutionScope::THROW_ON_FAILURE);
{
HandleScope handle_scope(isolate); // For env->context().
Context::Scope context_scope(env->context());
SealHandleScope seal_handle_scope(isolate);
env->set_stopping(true);
env->stop_sub_worker_contexts();
env->RunCleanup();
RunAtExit(env);
}
// This call needs to be made while the `Environment` is still alive
// because we assume that it is available for async tracking in the
// NodePlatform implementation.
MultiIsolatePlatform* platform = env->isolate_data()->platform();
if (platform != nullptr)
platform->DrainTasks(isolate);
delete env;
}
NODE_EXTERN std::unique_ptr<InspectorParentHandle> GetInspectorParentHandle(
Environment* env,
ThreadId thread_id,
const char* url) {
CHECK_NOT_NULL(env);
CHECK_NE(thread_id.id, static_cast<uint64_t>(-1));
#if HAVE_INSPECTOR
return std::make_unique<InspectorParentHandleImpl>(
env->inspector_agent()->GetParentHandle(thread_id.id, url));
#else
return {};
#endif
}
MaybeLocal<Value> LoadEnvironment(
Environment* env,
StartExecutionCallback cb) {
env->InitializeLibuv();
env->InitializeDiagnostics();
return StartExecution(env, cb);
}
MaybeLocal<Value> LoadEnvironment(
Environment* env,
const char* main_script_source_utf8) {
CHECK_NOT_NULL(main_script_source_utf8);
Isolate* isolate = env->isolate();
return LoadEnvironment(
env,
[&](const StartExecutionCallbackInfo& info) -> MaybeLocal<Value> {
// This is a slightly hacky way to convert UTF-8 to UTF-16.
Local<String> str =
String::NewFromUtf8(isolate,
main_script_source_utf8).ToLocalChecked();
auto main_utf16 = std::make_unique<String::Value>(isolate, str);
// TODO(addaleax): Avoid having a global table for all scripts.
std::string name = "embedder_main_" + std::to_string(env->thread_id());
native_module::NativeModuleEnv::Add(
name.c_str(),
UnionBytes(**main_utf16, main_utf16->length()));
env->set_main_utf16(std::move(main_utf16));
std::vector<Local<String>> params = {
env->process_string(),
env->require_string()};
std::vector<Local<Value>> args = {
env->process_object(),
env->native_module_require()};
return ExecuteBootstrapper(env, name.c_str(), ¶ms, &args);
});
}
Environment* GetCurrentEnvironment(Local<Context> context) {
return Environment::GetCurrent(context);
}
IsolateData* GetEnvironmentIsolateData(Environment* env) {
return env->isolate_data();
}
ArrayBufferAllocator* GetArrayBufferAllocator(IsolateData* isolate_data) {
return isolate_data->node_allocator();
}
MultiIsolatePlatform* GetMultiIsolatePlatform(Environment* env) {
return GetMultiIsolatePlatform(env->isolate_data());
}
MultiIsolatePlatform* GetMultiIsolatePlatform(IsolateData* env) {
return env->platform();
}
MultiIsolatePlatform* CreatePlatform(
int thread_pool_size,
node::tracing::TracingController* tracing_controller) {
return CreatePlatform(
thread_pool_size,
static_cast<v8::TracingController*>(tracing_controller));
}
MultiIsolatePlatform* CreatePlatform(
int thread_pool_size,
v8::TracingController* tracing_controller) {
return MultiIsolatePlatform::Create(thread_pool_size,
tracing_controller)
.release();
}
void FreePlatform(MultiIsolatePlatform* platform) {
delete platform;
}
std::unique_ptr<MultiIsolatePlatform> MultiIsolatePlatform::Create(
int thread_pool_size,
v8::TracingController* tracing_controller,
v8::PageAllocator* page_allocator) {
return std::make_unique<NodePlatform>(thread_pool_size,
tracing_controller,
page_allocator);
}
MaybeLocal<Object> GetPerContextExports(Local<Context> context) {
Isolate* isolate = context->GetIsolate();
EscapableHandleScope handle_scope(isolate);
Local<Object> global = context->Global();
Local<Private> key = Private::ForApi(isolate,
FIXED_ONE_BYTE_STRING(isolate, "node:per_context_binding_exports"));
Local<Value> existing_value;
if (!global->GetPrivate(context, key).ToLocal(&existing_value))
return MaybeLocal<Object>();
if (existing_value->IsObject())
return handle_scope.Escape(existing_value.As<Object>());
Local<Object> exports = Object::New(isolate);
if (context->Global()->SetPrivate(context, key, exports).IsNothing() ||
InitializePrimordials(context).IsNothing())
return MaybeLocal<Object>();
return handle_scope.Escape(exports);
}
// Any initialization logic should be performed in
// InitializeContext, because embedders don't necessarily
// call NewContext and so they will experience breakages.
Local<Context> NewContext(Isolate* isolate,
Local<ObjectTemplate> object_template) {
auto context = Context::New(isolate, nullptr, object_template);
if (context.IsEmpty()) return context;
if (InitializeContext(context).IsNothing()) {
return Local<Context>();
}
return context;
}
void ProtoThrower(const FunctionCallbackInfo<Value>& info) {
THROW_ERR_PROTO_ACCESS(info.GetIsolate());
}
// This runs at runtime, regardless of whether the context
// is created from a snapshot.
Maybe<bool> InitializeContextRuntime(Local<Context> context) {
Isolate* isolate = context->GetIsolate();
HandleScope handle_scope(isolate);
// Delete `Intl.v8BreakIterator`
// https://github.com/nodejs/node/issues/14909
{
Local<String> intl_string =
FIXED_ONE_BYTE_STRING(isolate, "Intl");
Local<String> break_iter_string =
FIXED_ONE_BYTE_STRING(isolate, "v8BreakIterator");
Local<Value> intl_v;
if (!context->Global()
->Get(context, intl_string)
.ToLocal(&intl_v)) {
return Nothing<bool>();
}
if (intl_v->IsObject() &&
intl_v.As<Object>()
->Delete(context, break_iter_string)
.IsNothing()) {
return Nothing<bool>();
}
}
// Delete `Atomics.wake`
// https://github.com/nodejs/node/issues/21219
{
Local<String> atomics_string =
FIXED_ONE_BYTE_STRING(isolate, "Atomics");
Local<String> wake_string =
FIXED_ONE_BYTE_STRING(isolate, "wake");
Local<Value> atomics_v;
if (!context->Global()
->Get(context, atomics_string)
.ToLocal(&atomics_v)) {
return Nothing<bool>();
}
if (atomics_v->IsObject() &&
atomics_v.As<Object>()
->Delete(context, wake_string)
.IsNothing()) {
return Nothing<bool>();
}
}
// Remove __proto__
// https://github.com/nodejs/node/issues/31951
Local<Object> prototype;
{
Local<String> object_string =
FIXED_ONE_BYTE_STRING(isolate, "Object");
Local<String> prototype_string =
FIXED_ONE_BYTE_STRING(isolate, "prototype");
Local<Value> object_v;
if (!context->Global()
->Get(context, object_string)
.ToLocal(&object_v)) {
return Nothing<bool>();
}
Local<Value> prototype_v;
if (!object_v.As<Object>()
->Get(context, prototype_string)
.ToLocal(&prototype_v)) {
return Nothing<bool>();
}
prototype = prototype_v.As<Object>();
}
Local<String> proto_string =
FIXED_ONE_BYTE_STRING(isolate, "__proto__");
if (per_process::cli_options->disable_proto == "delete") {
if (prototype
->Delete(context, proto_string)
.IsNothing()) {
return Nothing<bool>();
}
} else if (per_process::cli_options->disable_proto == "throw") {
Local<Value> thrower;
if (!Function::New(context, ProtoThrower)
.ToLocal(&thrower)) {
return Nothing<bool>();
}
PropertyDescriptor descriptor(thrower, thrower);
descriptor.set_enumerable(false);
descriptor.set_configurable(true);
if (prototype
->DefineProperty(context, proto_string, descriptor)
.IsNothing()) {
return Nothing<bool>();
}
} else if (per_process::cli_options->disable_proto != "") {
// Validated in ProcessGlobalArgs
FatalError("InitializeContextRuntime()",
"invalid --disable-proto mode");
}
return Just(true);
}
Maybe<bool> InitializeContextForSnapshot(Local<Context> context) {
Isolate* isolate = context->GetIsolate();
HandleScope handle_scope(isolate);
context->SetEmbedderData(ContextEmbedderIndex::kAllowWasmCodeGeneration,
True(isolate));
return InitializePrimordials(context);
}
Maybe<bool> InitializePrimordials(Local<Context> context) {
// Run per-context JS files.
Isolate* isolate = context->GetIsolate();
Context::Scope context_scope(context);
Local<Object> exports;
Local<String> primordials_string =
FIXED_ONE_BYTE_STRING(isolate, "primordials");
Local<String> global_string = FIXED_ONE_BYTE_STRING(isolate, "global");
Local<String> exports_string = FIXED_ONE_BYTE_STRING(isolate, "exports");
// Create primordials first and make it available to per-context scripts.
Local<Object> primordials = Object::New(isolate);
if (primordials->SetPrototype(context, Null(isolate)).IsNothing() ||
!GetPerContextExports(context).ToLocal(&exports) ||
exports->Set(context, primordials_string, primordials).IsNothing()) {
return Nothing<bool>();
}
static const char* context_files[] = {"internal/per_context/primordials",
"internal/per_context/domexception",
"internal/per_context/messageport",
nullptr};
for (const char** module = context_files; *module != nullptr; module++) {
std::vector<Local<String>> parameters = {
global_string, exports_string, primordials_string};
Local<Value> arguments[] = {context->Global(), exports, primordials};
MaybeLocal<Function> maybe_fn =
native_module::NativeModuleEnv::LookupAndCompile(
context, *module, ¶meters, nullptr);
Local<Function> fn;
if (!maybe_fn.ToLocal(&fn)) {
return Nothing<bool>();
}
MaybeLocal<Value> result =
fn->Call(context, Undefined(isolate), arraysize(arguments), arguments);
// Execution failed during context creation.
if (result.IsEmpty()) {
return Nothing<bool>();
}
}
return Just(true);
}
Maybe<bool> InitializeContext(Local<Context> context) {
if (InitializeContextForSnapshot(context).IsNothing()) {
return Nothing<bool>();
}
return InitializeContextRuntime(context);
}
uv_loop_t* GetCurrentEventLoop(Isolate* isolate) {
HandleScope handle_scope(isolate);
Local<Context> context = isolate->GetCurrentContext();
if (context.IsEmpty()) return nullptr;
Environment* env = Environment::GetCurrent(context);
if (env == nullptr) return nullptr;
return env->event_loop();
}
void AddLinkedBinding(Environment* env, const node_module& mod) {
CHECK_NOT_NULL(env);
Mutex::ScopedLock lock(env->extra_linked_bindings_mutex());
node_module* prev_tail = env->extra_linked_bindings_tail();
env->extra_linked_bindings()->push_back(mod);
if (prev_tail != nullptr)
prev_tail->nm_link = &env->extra_linked_bindings()->back();
}
void AddLinkedBinding(Environment* env, const napi_module& mod) {
AddLinkedBinding(env, napi_module_to_node_module(&mod));
}
void AddLinkedBinding(Environment* env,
const char* name,
addon_context_register_func fn,
void* priv) {
node_module mod = {
NODE_MODULE_VERSION,
NM_F_LINKED,
nullptr, // nm_dso_handle
nullptr, // nm_filename
nullptr, // nm_register_func
fn,
name,
priv,
nullptr // nm_link
};
AddLinkedBinding(env, mod);
}
static std::atomic<uint64_t> next_thread_id{0};
ThreadId AllocateEnvironmentThreadId() {
return ThreadId { next_thread_id++ };
}
void DefaultProcessExitHandler(Environment* env, int exit_code) {
env->set_can_call_into_js(false);
env->stop_sub_worker_contexts();
DisposePlatform();
uv_library_shutdown();
exit(exit_code);
}
void SetProcessExitHandler(Environment* env,
std::function<void(Environment*, int)>&& handler) {
env->set_process_exit_handler(std::move(handler));
}
} // namespace node