node/src/node_binding.cc at main · nodejs/node · GitHub

History

737 lines (637 loc) · 26.5 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

#include "node_binding.h"

#include <atomic>

#include "env-inl.h"

#include "node_builtins.h"

#include "node_errors.h"

#include "node_external_reference.h"

#include "node_url_pattern.h"

#include "permission/permission.h"

#include "util.h"

#include <string>

#if HAVE_OPENSSL

#define NODE_BUILTIN_OPENSSL_BINDINGS(V) V(crypto) V(tls_wrap)

#else

#define NODE_BUILTIN_OPENSSL_BINDINGS(V)

#endif

#if HAVE_INSPECTOR

#define NODE_BUILTIN_PROFILER_BINDINGS(V) V(profiler)

#else

#define NODE_BUILTIN_PROFILER_BINDINGS(V)

#endif

#ifdef DEBUG

#define NODE_BUILTIN_DEBUG_BINDINGS(V) V(debug)

#else

#define NODE_BUILTIN_DEBUG_BINDINGS(V)

#endif

// A list of built-in bindings. In order to do binding registration

// in node::Init(), need to add built-in bindings in the following list.

// Then in binding::RegisterBuiltinBindings(), it calls bindings' registration

// function. This helps the built-in bindings are loaded properly when

// node is built as static library. No need to depend on the

// __attribute__((constructor)) like mechanism in GCC.

// The binding IDs that start with 'internal_only' are not exposed to the user

// land even from internal/test/binding module under --expose-internals.

#define NODE_BUILTIN_STANDARD_BINDINGS(V) \

V(async_context_frame) \

V(async_wrap) \

V(blob) \

V(block_list) \

V(buffer) \

V(builtins) \

V(cares_wrap) \

V(cjs_lexer) \

V(config) \

V(constants) \

V(contextify) \

V(credentials) \

V(diagnostics_channel) \

V(encoding_binding) \

V(errors) \

V(fs) \

V(fs_dir) \

V(fs_event_wrap) \

V(heap_utils) \

V(http2) \

V(http_parser) \

V(inspector) \

V(internal_only_v8) \

V(ipc_serdes) \

V(js_stream) \

V(js_udp_wrap) \

V(locks) \

V(messaging) \

V(modules) \

V(module_wrap) \

V(mksnapshot) \

V(options) \

V(os) \

V(performance) \

V(permission) \

V(pipe_wrap) \

V(process_wrap) \

V(process_methods) \

V(report) \

V(sea) \

V(serdes) \

V(signal_wrap) \

V(spawn_sync) \

V(stream_pipe) \

V(stream_wrap) \

V(string_decoder) \

V(symbols) \

V(task_queue) \

V(tcp_wrap) \

V(timers) \

V(trace_events) \

V(tty_wrap) \

V(types) \

V(udp_wrap) \

V(url) \

V(url_pattern) \

V(util) \

V(uv) \

V(v8) \

V(wasi) \

V(wasm_web_api) \

V(watchdog) \

V(worker) \

V(zlib)

#define NODE_BUILTIN_BINDINGS(V) \

NODE_BUILTIN_STANDARD_BINDINGS(V) \

NODE_BUILTIN_OPENSSL_BINDINGS(V) \

NODE_BUILTIN_ICU_BINDINGS(V) \

NODE_BUILTIN_PROFILER_BINDINGS(V) \

NODE_BUILTIN_DEBUG_BINDINGS(V) \

NODE_BUILTIN_DTLS_BINDINGS(V) \

NODE_BUILTIN_QUIC_BINDINGS(V) \

NODE_BUILTIN_SQLITE_BINDINGS(V) \

NODE_BUILTIN_FFI_BINDINGS(V)

// This is used to load built-in bindings. Instead of using

// __attribute__((constructor)), we call the _register_<modname>

// function for each built-in bindings explicitly in

// binding::RegisterBuiltinBindings(). This is only forward declaration.

// The definitions are in each binding's implementation when calling

// the NODE_BINDING_CONTEXT_AWARE_INTERNAL.

#define V(modname) void _register_##modname();

NODE_BUILTIN_BINDINGS(V)

#undef V

#define V(modname) \

void _register_isolate_##modname(node::IsolateData* isolate_data, \

v8::Local<v8::ObjectTemplate> target);

NODE_BINDINGS_WITH_PER_ISOLATE_INIT(V)

#undef V

#ifdef _AIX

// On AIX, dlopen() behaves differently from other operating systems, in that

// it returns unique values from each call, rather than identical values, when

// loading the same handle.

// We try to work around that by providing wrappers for the dlopen() family of

// functions, and using st_dev and st_ino for the file that is to be loaded

// as keys for a cache.

namespace node {

namespace dlwrapper {

struct dl_wrap {

uint64_t st_dev;

uint64_t st_ino;

uint64_t refcount;

void* real_handle;

struct hash {

size_t operator()(const dl_wrap* wrap) const {

return std::hash<uint64_t>()(wrap->st_dev) ^

std::hash<uint64_t>()(wrap->st_ino);

}

};

struct equal {

bool operator()(const dl_wrap* a,

const dl_wrap* b) const {

return a->st_dev == b->st_dev && a->st_ino == b->st_ino;

}

};

static Mutex dlhandles_mutex;

static std::unordered_set<dl_wrap*, dl_wrap::hash, dl_wrap::equal>

dlhandles;

static thread_local std::string dlerror_storage;

char* wrapped_dlerror() {

return &dlerror_storage[0];

}

void* wrapped_dlopen(const char* filename, int flags) {

CHECK_NOT_NULL(filename); // This deviates from the 'real' dlopen().

Mutex::ScopedLock lock(dlhandles_mutex);

uv_fs_t req;

auto cleanup = OnScopeLeave([&]() { uv_fs_req_cleanup(&req); });

int rc = uv_fs_stat(nullptr, &req, filename, nullptr);

if (rc != 0) {

dlerror_storage = uv_strerror(rc);

return nullptr;

}

dl_wrap search = {

req.statbuf.st_dev,

req.statbuf.st_ino,

0, nullptr

};

auto it = dlhandles.find(&search);

if (it != dlhandles.end()) {

(*it)->refcount++;

return *it;

}

void* real_handle = dlopen(filename, flags);

if (real_handle == nullptr) {

dlerror_storage = dlerror();

return nullptr;

}

dl_wrap* wrap = new dl_wrap();

wrap->st_dev = req.statbuf.st_dev;

wrap->st_ino = req.statbuf.st_ino;

wrap->refcount = 1;

wrap->real_handle = real_handle;

dlhandles.insert(wrap);

return wrap;

}

int wrapped_dlclose(void* handle) {

Mutex::ScopedLock lock(dlhandles_mutex);

dl_wrap* wrap = static_cast<dl_wrap*>(handle);

int ret = 0;

CHECK_GE(wrap->refcount, 1);

if (--wrap->refcount == 0) {

ret = dlclose(wrap->real_handle);

if (ret != 0) dlerror_storage = dlerror();

dlhandles.erase(wrap);

delete wrap;

}

return ret;

}

void* wrapped_dlsym(void* handle, const char* symbol) {

if (handle == RTLD_DEFAULT || handle == RTLD_NEXT)

return dlsym(handle, symbol);

dl_wrap* wrap = static_cast<dl_wrap*>(handle);

return dlsym(wrap->real_handle, symbol);

}

#define dlopen node::dlwrapper::wrapped_dlopen

#define dlerror node::dlwrapper::wrapped_dlerror

#define dlclose node::dlwrapper::wrapped_dlclose

#define dlsym node::dlwrapper::wrapped_dlsym

} // namespace dlwrapper

} // namespace node

#endif // _AIX

#ifdef __linux__

static bool libc_may_be_musl() {

static std::atomic_bool retval; // Cache the return value.

static std::atomic_bool has_cached_retval { false };

if (has_cached_retval) return retval;

retval = dlsym(RTLD_DEFAULT, "gnu_get_libc_version") == nullptr;

has_cached_retval = true;

return retval;

}

#elif defined(__POSIX__)

static bool libc_may_be_musl() { return false; }

#endif // __linux__

namespace node {

using v8::Context;

using v8::EscapableHandleScope;

using v8::Exception;

using v8::FunctionCallbackInfo;

using v8::HandleScope;

using v8::Isolate;

using v8::Local;

using v8::Object;

using v8::ObjectTemplate;

using v8::String;

using v8::Value;

// Globals per process

static node_module* modlist_internal;

static node_module* modlist_linked;

static thread_local node_module* thread_local_modpending;

// This is set by node::Init() which is used by embedders

bool node_is_initialized = false;

extern "C" void node_module_register(void* m) {

struct node_module* mp = reinterpret_cast<struct node_module*>(m);

if (mp->nm_flags & NM_F_INTERNAL) {

mp->nm_link = modlist_internal;

modlist_internal = mp;

} else if (!node_is_initialized) {

// "Linked" modules are included as part of the node project.

// Like builtins they are registered *before* node::Init runs.

mp->nm_flags = NM_F_LINKED;

mp->nm_link = modlist_linked;

modlist_linked = mp;

} else {

thread_local_modpending = mp;

}

namespace binding {

static struct global_handle_map_t {

public:

void set(void* handle, node_module* mod) {

CHECK_NE(handle, nullptr);

Mutex::ScopedLock lock(mutex_);

map_[handle].module = mod;

// We need to store this flag internally to avoid a chicken-and-egg problem

// during cleanup. By the time we actually use the flag's value,

// the shared object has been unloaded, and its memory would be gone,

// making it impossible to access fields of `mod` --

// unless `mod` *is* dynamically allocated, but we cannot know that

// without checking the flag.

map_[handle].wants_delete_module = mod->nm_flags & NM_F_DELETEME;

map_[handle].refcount++;

}

node_module* get_and_increase_refcount(void* handle) {

CHECK_NE(handle, nullptr);

Mutex::ScopedLock lock(mutex_);

auto it = map_.find(handle);

if (it == map_.end()) return nullptr;

it->second.refcount++;

return it->second.module;

}

void erase(void* handle) {

CHECK_NE(handle, nullptr);

Mutex::ScopedLock lock(mutex_);

auto it = map_.find(handle);

if (it == map_.end()) return;

CHECK_GE(it->second.refcount, 1);

if (--it->second.refcount == 0) {

if (it->second.wants_delete_module)

delete it->second.module;

map_.erase(handle);

}

private:

Mutex mutex_;

struct Entry {

unsigned int refcount;

bool wants_delete_module;

node_module* module;

};

std::unordered_map<void*, Entry> map_;

} global_handle_map;

DLib::DLib(const char* filename, int flags)

: filename_(filename), flags_(flags), handle_(nullptr) {}

#ifdef __POSIX__

bool DLib::Open() {

handle_ = dlopen(filename_.c_str(), flags_);

if (handle_ != nullptr) return true;

errmsg_ = dlerror();

return false;

}

void DLib::Close() {

if (handle_ == nullptr) return;

if (libc_may_be_musl()) {

// musl libc implements dlclose() as a no-op which returns 0.

// As a consequence, trying to re-load a previously closed addon at a later

// point will not call its static constructors, which Node.js uses.

// Therefore, when we may be using musl libc, we assume that the shared

// object exists indefinitely and keep it in our handle map.

return;

}

int err = dlclose(handle_);

if (err == 0) {

if (has_entry_in_global_handle_map_)

global_handle_map.erase(handle_);

}

handle_ = nullptr;

}

void* DLib::GetSymbolAddress(const char* name) {

return dlsym(handle_, name);

}

#else // !__POSIX__

bool DLib::Open() {

int ret = uv_dlopen(filename_.c_str(), &lib_);

if (ret == 0) {

handle_ = static_cast<void*>(lib_.handle);

return true;

}

errmsg_ = uv_dlerror(&lib_);

uv_dlclose(&lib_);

return false;

}

void DLib::Close() {

if (handle_ == nullptr) return;

if (has_entry_in_global_handle_map_)

global_handle_map.erase(handle_);

uv_dlclose(&lib_);

handle_ = nullptr;

}

void* DLib::GetSymbolAddress(const char* name) {

void* address;

if (0 == uv_dlsym(&lib_, name, &address)) return address;

return nullptr;

}

#endif // !__POSIX__

void DLib::SaveInGlobalHandleMap(node_module* mp) {

has_entry_in_global_handle_map_ = true;

global_handle_map.set(handle_, mp);

}

node_module* DLib::GetSavedModuleFromGlobalHandleMap() {

has_entry_in_global_handle_map_ = true;

return global_handle_map.get_and_increase_refcount(handle_);

}

using InitializerCallback = void (*)(Local<Object> exports,

Local<Value> module,

Local<Context> context);

inline InitializerCallback GetInitializerCallback(DLib* dlib) {

const char* name = "node_register_module_v" STRINGIFY(NODE_MODULE_VERSION);

return reinterpret_cast<InitializerCallback>(dlib->GetSymbolAddress(name));

}

inline napi_addon_register_func GetNapiInitializerCallback(DLib* dlib) {

const char* name =

STRINGIFY(NAPI_MODULE_INITIALIZER_BASE) STRINGIFY(NAPI_MODULE_VERSION);

return reinterpret_cast<napi_addon_register_func>(

dlib->GetSymbolAddress(name));

}

inline node_api_addon_get_api_version_func GetNapiAddonGetApiVersionCallback(

DLib* dlib) {

return reinterpret_cast<node_api_addon_get_api_version_func>(

dlib->GetSymbolAddress(STRINGIFY(NODE_API_MODULE_GET_API_VERSION)));

}

// DLOpen is process.dlopen(module, filename, flags).

// Used to load 'module.node' dynamically shared objects.

// FIXME(bnoordhuis) Not multi-context ready. TBD how to resolve the conflict

// when two contexts try to load the same shared object. Maybe have a shadow

// cache that's a plain C list or hash table that's shared across contexts?

void DLOpen(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

if (env->no_native_addons()) {

return THROW_ERR_DLOPEN_DISABLED(

env, "Cannot load native addon because loading addons is disabled.");

}

THROW_IF_INSUFFICIENT_PERMISSIONS(

env, permission::PermissionScope::kAddon, "");

auto context = env->context();

CHECK_NULL(thread_local_modpending);

if (args.Length() < 2) {

return THROW_ERR_MISSING_ARGS(

env, "process.dlopen needs at least 2 arguments");

}

int32_t flags = DLib::kDefaultFlags;

if (args.Length() > 2 && !args[2]->Int32Value(context).To(&flags)) {

return THROW_ERR_INVALID_ARG_TYPE(env, "flag argument must be an integer.");

}

Local<Object> module;

Local<Object> exports;

Local<Value> exports_v;

if (!args[0]->ToObject(context).ToLocal(&module) ||

!module->Get(context, env->exports_string()).ToLocal(&exports_v) ||

!exports_v->ToObject(context).ToLocal(&exports)) {

return; // Exception pending.

}

node::Utf8Value filename(env->isolate(), args[1]); // Cast

env->TryLoadAddon(*filename, flags, [&](DLib* dlib) {

static Mutex dlib_load_mutex;

Mutex::ScopedLock lock(dlib_load_mutex);

const bool is_opened = dlib->Open();

// Objects containing v14 or later modules will have registered themselves

// on the pending list. Activate all of them now. At present, only one

// module per object is supported.

node_module* mp = thread_local_modpending;

thread_local_modpending = nullptr;

if (!is_opened) {

std::string errmsg = dlib->errmsg_.c_str();

dlib->Close();

#ifdef _WIN32

// Windows needs to add the filename into the error message

errmsg += filename.ToStringView();

#endif // _WIN32

THROW_ERR_DLOPEN_FAILED(env, "%s", errmsg);

return false;

}

if (mp != nullptr) {

if (mp->nm_context_register_func == nullptr) {

if (env->force_context_aware()) {

dlib->Close();

THROW_ERR_NON_CONTEXT_AWARE_DISABLED(env);

return false;

}

mp->nm_dso_handle = dlib->handle_;

dlib->SaveInGlobalHandleMap(mp);

} else {

if (auto callback = GetInitializerCallback(dlib)) {

callback(exports, module, context);

return true;

} else if (auto napi_callback = GetNapiInitializerCallback(dlib)) {

int32_t module_api_version = NODE_API_DEFAULT_MODULE_API_VERSION;

if (auto get_version = GetNapiAddonGetApiVersionCallback(dlib)) {

module_api_version = get_version();

}

napi_module_register_by_symbol(

exports, module, context, napi_callback, module_api_version);

return true;

} else {

mp = dlib->GetSavedModuleFromGlobalHandleMap();

if (mp == nullptr || mp->nm_context_register_func == nullptr) {

dlib->Close();

THROW_ERR_DLOPEN_FAILED(

env, "Module did not self-register: '%s'.", filename);

return false;

}

// -1 is used for Node-API modules

if ((mp->nm_version != -1) && (mp->nm_version != NODE_MODULE_VERSION)) {

// Even if the module did self-register, it may have done so with the

// wrong version. We must only give up after having checked to see if it

// has an appropriate initializer callback.

if (auto callback = GetInitializerCallback(dlib)) {

callback(exports, module, context);

return true;

}

const int actual_nm_version = mp->nm_version;

// NOTE: `mp` is allocated inside of the shared library's memory, calling

// `dlclose` will deallocate it

dlib->Close();

THROW_ERR_DLOPEN_FAILED(

env,

"The module '%s'"

"\nwas compiled against a different Node.js version using"

"\nNODE_MODULE_VERSION %d. This version of Node.js requires"

"\nNODE_MODULE_VERSION %d. Please try re-compiling or "

"re-installing\nthe module (for instance, using `npm rebuild` "

"or `npm install`).",

*filename,

actual_nm_version,

NODE_MODULE_VERSION);

return false;

}

CHECK_EQ(mp->nm_flags & NM_F_BUILTIN, 0);

// Do not keep the lock while running userland addon loading code.

Mutex::ScopedUnlock unlock(lock);

if (mp->nm_context_register_func != nullptr) {

mp->nm_context_register_func(exports, module, context, mp->nm_priv);

} else if (mp->nm_register_func != nullptr) {

mp->nm_register_func(exports, module, mp->nm_priv);

} else {

dlib->Close();

THROW_ERR_DLOPEN_FAILED(env, "Module has no declared entry point.");

return false;

}

return true;

});

// Tell coverity that 'handle' should not be freed when we return.

// coverity[leaked_storage]

}

inline struct node_module* FindModule(struct node_module* list,

const char* name,

int flag) {

struct node_module* mp;

for (mp = list; mp != nullptr; mp = mp->nm_link) {

if (strcmp(mp->nm_modname, name) == 0) break;

}

CHECK(mp == nullptr || (mp->nm_flags & flag) != 0);

return mp;

}

void CreateInternalBindingTemplates(IsolateData* isolate_data) {

#define V(modname) \

do { \

Local<ObjectTemplate> templ = \

ObjectTemplate::New(isolate_data->isolate()); \

templ->SetInternalFieldCount(BaseObject::kInternalFieldCount); \

_register_isolate_##modname(isolate_data, templ); \

isolate_data->set_##modname##_binding_template(templ); \

} while (0);

NODE_BINDINGS_WITH_PER_ISOLATE_INIT(V)

#undef V

}

static Local<Object> GetInternalBindingExportObject(IsolateData* isolate_data,

const char* mod_name,

Local<Context> context) {

Local<ObjectTemplate> templ;

#define V(name) \

if (strcmp(mod_name, #name) == 0) { \

templ = isolate_data->name##_binding_template(); \

} else // NOLINT(readability/braces)

NODE_BINDINGS_WITH_PER_ISOLATE_INIT(V)

#undef V

{

// Default template.

templ = isolate_data->binding_data_default_template();

}

Local<Object> obj = templ->NewInstance(context).ToLocalChecked();

return obj;

}

static Local<Object> InitInternalBinding(Realm* realm, node_module* mod) {

EscapableHandleScope scope(realm->isolate());

Local<Context> context = realm->context();

Local<Object> exports = GetInternalBindingExportObject(

realm->isolate_data(), mod->nm_modname, context);

CHECK_NULL(mod->nm_register_func);

CHECK_NOT_NULL(mod->nm_context_register_func);

Local<Value> unused = Undefined(realm->isolate());

// Internal bindings don't have a "module" object, only exports.

mod->nm_context_register_func(exports, unused, context, mod->nm_priv);

return scope.Escape(exports);

}

void GetInternalBinding(const FunctionCallbackInfo<Value>& args) {

Realm* realm = Realm::GetCurrent(args);

Isolate* isolate = realm->isolate();

HandleScope scope(isolate);

CHECK(args[0]->IsString());

Local<String> module = args[0].As<String>();

node::Utf8Value module_v(isolate, module);

Local<Object> exports;

node_module* mod = FindModule(modlist_internal, *module_v, NM_F_INTERNAL);

if (mod != nullptr) {

exports = InitInternalBinding(realm, mod);

realm->internal_bindings.insert(mod);

} else {

return THROW_ERR_INVALID_MODULE(isolate, "No such binding: %s", module_v);

}

args.GetReturnValue().Set(exports);

}

void GetLinkedBinding(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

CHECK(args[0]->IsString());

Local<String> module_name = args[0].As<String>();

node::Utf8Value module_name_v(env->isolate(), module_name);

const char* name = *module_name_v;

THROW_IF_INSUFFICIENT_PERMISSIONS(

env, permission::PermissionScope::kAddon, module_name_v.ToStringView());

node_module* mod = nullptr;

// Iterate from here to the nearest non-Worker Environment to see if there's

// a linked binding defined locally rather than through the global list.

Environment* cur_env = env;

while (mod == nullptr && cur_env != nullptr) {

Mutex::ScopedLock lock(cur_env->extra_linked_bindings_mutex());

mod = FindModule(cur_env->extra_linked_bindings_head(), name, NM_F_LINKED);

cur_env = cur_env->worker_parent_env();

}

if (mod == nullptr)

mod = FindModule(modlist_linked, name, NM_F_LINKED);

if (mod == nullptr) {

return THROW_ERR_INVALID_MODULE(

env, "No such binding was linked: %s", module_name_v);

}

Local<Object> module = Object::New(env->isolate());

Local<Object> exports = Object::New(env->isolate());

if (module->Set(env->context(), env->exports_string(), exports).IsNothing()) {

return;

}

if (mod->nm_context_register_func != nullptr) {

mod->nm_context_register_func(

exports, module, env->context(), mod->nm_priv);

} else if (mod->nm_register_func != nullptr) {

mod->nm_register_func(exports, module, mod->nm_priv);

} else {

return THROW_ERR_INVALID_MODULE(

env, "Linked binding has no declared entry point.");

}

Local<Value> effective_exports;

if (module->Get(env->context(), env->exports_string())

.ToLocal(&effective_exports)) {

args.GetReturnValue().Set(effective_exports);

}

// Call built-in bindings' _register_<module name> function to

// do binding registration explicitly.

void RegisterBuiltinBindings() {

#define V(modname) _register_##modname();

NODE_BUILTIN_BINDINGS(V)

#undef V

}

void RegisterExternalReferences(ExternalReferenceRegistry* registry) {

registry->Register(GetLinkedBinding);

registry->Register(GetInternalBinding);

}

} // namespace binding

} // namespace node

NODE_BINDING_EXTERNAL_REFERENCE(binding,

node::binding::RegisterExternalReferences)

node/src/node_binding.cc at main · nodejs/node · GitHub

Uh oh!

Uh oh!

node/src/node_binding.cc at main · nodejs/node · GitHub

Uh oh!

Uh oh!

Expand file tree

Breadcrumbs

node_binding.cc

Latest commit

History

Breadcrumbs

node_binding.cc

File metadata and controls