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GeezerVison is showing github.com — ios/NativeScript/runtime/Runtime.mm at main · NativeScript/ios Expand file tree/ Copy pathRuntime.mmMore file actions 831 lines (735 loc) · 32.7 KB / Copy pathRuntime.mmFile metadata and controls831 lines (735 loc) · 32.7 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 #include "Runtime.h" #include <chrono> #include <string> #include "ArgConverter.h" #include "BuiltinLoader.h" #include "Caches.h" #include "Console.h" #include "Constants.h" #include "ErrorEvents.h" #include "Events.h" #include "ExternalMemory.h" #include "Helpers.h" #include "InlineFunctions.h" #include "Interop.h" #include "IsolateTracked.h" #include "LazyGlobals.h" #include "Messaging.h" #include "NativeScriptException.h" #include "NativeScriptPlatform.h" #include "ObjectManager.h" #include "Performance.h" #include "PromiseProxy.h" #include "RuntimeConfig.h" #include "SimpleAllocator.h" #include "SpinLock.h" #include "StructuredClone.h" #include "TSHelpers.h" #include "WeakRef.h" #include "Worker.h" #include "generated/Version.h" #include "IsolateWrapper.h" #include <mutex> #include <unordered_map> #include <vector> #include "HttpLoader.h" #include "ModuleBinding.hpp" #include "ModuleInternalCallbacks.h" #include "napi/NapiEnv.h" #include "URLImpl.h" #include "URLPatternImpl.h" #include "URLSearchParamsImpl.h" using namespace v8; using namespace std; // Import meta callback to support import.meta.url // // `g_moduleRegistry` keys are normalized by `CanonicalizeRegistryKey` // (in ModuleInternalCallbacks.mm) to one of: // // 1. HTTP / HTTPS URL — `http://host:port/path` or `https://...`. // The URL IS the module identity; // `import.meta.url` should be the URL verbatim. // // 2. Custom scheme — `node:fs`, `blob:...`. // Synthetic / built-in modules that aren't backed by the local // filesystem. Their identity is the scheme + body itself; // `import.meta.url` keeps that string unchanged. // // 3. Absolute filesystem path — `/Users/.../app/src/foo.js`. The // production / non-HMR dev shape. Strip the runtime base dir to // recover the canonical "/app/<rel>" shape JS consumers see, then // prepend `file://` so the result is a well-formed URL. // static void InitializeImportMetaObject(Local<Context> context, Local<Module> module, Local<Object> meta) { Isolate* isolate = v8::Isolate::GetCurrent(); std::string modulePath = tns::LookupModuleKeyForModule(isolate, module); auto hasUrlScheme = [](const std::string& s) -> bool { if (s.empty()) return false; size_t colonPos = s.find(':'); if (colonPos == 0 || colonPos == std::string::npos) return false; size_t slashPos = s.find('/'); if (slashPos != std::string::npos && slashPos < colonPos) return false; for (size_t i = 0; i < colonPos; i++) { char c = s[i]; const bool ok = (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '+' || c == '-' || c == '.'; if (!ok) return false; } return true; }; // Compute import.meta.url. std::string moduleUrl; if (modulePath.empty()) { moduleUrl = "file:///app/"; } else if (hasUrlScheme(modulePath)) { moduleUrl = modulePath; } else { std::string base = tns::ReplaceAll(modulePath, RuntimeConfig.BaseDir, ""); moduleUrl = "file://" + base; } Local<String> url = String::NewFromUtf8(isolate, moduleUrl.c_str(), NewStringType::kNormal).ToLocalChecked(); // Set import.meta.url property meta->CreateDataProperty( context, String::NewFromUtf8(isolate, "url", NewStringType::kNormal).ToLocalChecked(), url) .Check(); // Compute import.meta.dirname. // // Spec (Node.js): `import.meta.dirname` is the OS-path of the // directory containing the module — equivalent to `path.dirname( // fileURLToPath(import.meta.url))`. It only makes sense for modules // backed by the local filesystem. // // For URL-backed modules (HTTP, blob, etc.) there is no // filesystem directory. We return the URL with the final segment // stripped — a best-effort answer that's stable across cycles and // useful for log lines / source maps. Consumers that genuinely need // a filesystem path should already be guarding on `meta.url`'s // scheme before using `meta.dirname`. std::string dirname; if (modulePath.empty()) { dirname = "/app"; } else if (hasUrlScheme(modulePath)) { size_t schemeEnd = modulePath.find("://"); size_t pathStart = (schemeEnd == std::string::npos) ? std::string::npos : modulePath.find('/', schemeEnd + 3); size_t lastSlash = modulePath.find_last_of('/'); if (pathStart != std::string::npos && lastSlash != std::string::npos && lastSlash > pathStart) { dirname = modulePath.substr(0, lastSlash); } else { // No path beyond the host (`http://host`) or scheme without `//` // (`node:fs`, `blob:abc`). Keep the identity intact. dirname = modulePath; } } else { // Derived from the same base-stripped path `import.meta.url` reports, so // the documented equivalence holds: dirname is // `path.dirname(fileURLToPath(import.meta.url))`. Taking it from the raw // path instead reported a container-absolute directory for a module whose // url said `file:///app/…`. const std::string appRelative = tns::ReplaceAll(modulePath, RuntimeConfig.BaseDir, ""); size_t lastSlash = appRelative.find_last_of("/\\"); if (lastSlash != std::string::npos && lastSlash > 0) { dirname = appRelative.substr(0, lastSlash); } else { dirname = "/app"; // fallback } } Local<String> dirnameStr = String::NewFromUtf8(isolate, dirname.c_str(), NewStringType::kNormal).ToLocalChecked(); // Set import.meta.dirname property meta->CreateDataProperty( context, String::NewFromUtf8(isolate, "dirname", NewStringType::kNormal).ToLocalChecked(), dirnameStr) .Check(); } namespace tns { std::atomic<int> Runtime::nextIsolateId{0}; SimpleAllocator allocator_; NSDictionary* AppPackageJson = nil; static std::unordered_map<std::string, id> AppConfigCache; // generic cache for app config values static std::mutex AppConfigCacheMutex; // Global flag to track if error display is currently showing bool isErrorDisplayShowing = false; // TODO: consider listening to timezone changes and automatically reseting the DateTime. Probably // makes more sense to move it to its own file // void UpdateTimezoneNotificationCallback(CFNotificationCenterRef center, // void *observer, // CFStringRef name, // const void *object, // CFDictionaryRef userInfo) { // Runtime* r = (Runtime*)observer; // auto isolate = r->GetIsolate(); // // CFRunLoopPerformBlock(r->RuntimeLoop(), kCFRunLoopDefaultMode, ^() { // TODO: lock isolate here? // isolate->DateTimeConfigurationChangeNotification(Isolate::TimeZoneDetection::kRedetect); // }); //} // add this to register (most likely on setting up isolate // CFNotificationCenterAddObserver(CFNotificationCenterGetLocalCenter(), this, // &UpdateTimezoneNotificationCallback, kCFTimeZoneSystemTimeZoneDidChangeNotification, nullptr, // CFNotificationSuspensionBehaviorDeliverImmediately); // add this to remove the observer // CFNotificationCenterRemoveObserver(CFNotificationCenterGetLocalCenter(), this, // kCFTimeZoneSystemTimeZoneDidChangeNotification, NULL); void DisposeIsolateWhenPossible(Isolate* isolate, int gateId) { // Disposal is deferred while the isolate is still entered, which happens // when the runtime is deleted by code running inside its own isolate: an // embedder calling shutdownRuntime from a JS callback. It is also deferred // while another thread holds a pin to wait for or use the isolate's Locker. // Never block here instead: the pin holder may be waiting for a Locker this // thread still holds further up the stack. exit() never deletes a runtime, // so a process that is dying leaves its isolates to the OS. if (isolate->IsInUse() || !IsolateGates::RetireIfUnpinned(gateId)) { dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10.0 * NSEC_PER_MSEC)), dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0), ^{ DisposeIsolateWhenPossible(isolate, gateId); }); } else { isolate->Dispose(); } } void Runtime::Initialize() { // Before anything worth tracing runs, so NS_DEBUG covers boot itself. tns::InitializeLogCategoriesFromEnvironment(); MetaFile::setInstance(RuntimeConfig.MetadataPtr); ExternalMemory::StartMemoryPressureMonitoring(); } Runtime::Runtime(const RuntimeOptions& options) : workerId_(options.workerId) { currentRuntime_ = this; workerCache_ = Caches::Workers; const IsolateLimits& limits = options.limits; if (!v8Initialized_) { // Runtime::platform_ = RuntimeConfig.IsDebug // ? v8_inspector::V8InspectorPlatform::CreateDefaultPlatform() // : platform::NewDefaultPlatform(); // Flags must be set before V8::Initialize(), which freezes them; changing a // flag afterwards aborts the process. Don't pass --jitless either: // v8_enable_lite_mode already implies it and makes the flag read-only, // which is likewise fatal to set. std::string flags = RuntimeConfig.IsDebug ? "--expose_gc" : "--expose_gc --no-lazy"; V8::SetFlagsFromString(flags.c_str(), flags.size()); // wrap the default platform so foreground tasks ride each runtime // thread's CFRunLoop instead of sitting in never-pumped libplatform queues Runtime::platform_ = new NativeScriptPlatform(platform::NewDefaultPlatform()); V8::InitializePlatform(Runtime::platform_); V8::Initialize(); v8Initialized_ = true; } timeOriginMonotonic_ = platform_->MonotonicallyIncreasingTime(); timeOriginRealtimeMs_ = platform_->CurrentClockTimeMillis(); // auto version = v8::V8::GetVersion(); Isolate::CreateParams create_params; create_params.array_buffer_allocator = &allocator_; if (limits.maxOldGenerationSizeBytes.has_value()) { create_params.constraints.set_max_old_generation_size_in_bytes( *limits.maxOldGenerationSizeBytes); } if (limits.maxYoungGenerationSizeBytes.has_value()) { create_params.constraints.set_max_young_generation_size_in_bytes( *limits.maxYoungGenerationSizeBytes); } #ifdef V8_HAS_JS_DISPATCH_TABLE_RESERVATION_PARAM if (limits.jsDispatchTableReservationBytes.has_value()) { create_params.js_dispatch_table_reservation_size = *limits.jsDispatchTableReservationBytes; } #endif Isolate* isolate = Isolate::New(create_params); runtimeLoop_ = CFRunLoopGetCurrent(); // v8 already asked for this isolate's task runner during Isolate::New, so // the registry may hold an unbound loop - or a stopped one, when a worker // isolate reuses a disposed isolate's address. Refresh, then attach to this // thread; foreground tasks buffered so far start flowing from here on. // (In the reused-address case, tasks v8 posted DURING Isolate::New landed // in the stale stopped loop and were dropped - refreshing any earlier is // impossible (the address isn't known) and refreshing on runner lookup // would defeat the matched-erase teardown protection.) eventLoop_ = NativeScriptPlatform::Instance()->RefreshEventLoop(isolate); eventLoop_->BindToCurrentThread(); isolate->SetData(Constants::RUNTIME_SLOT, this); isolate_ = isolate; } Runtime::~Runtime() { if (!initialized_) { // Never published: no other thread can know this isolate, and it holds no // caches, gate or wrappers. isolate_->Dispose(); NativeScriptPlatform::Instance()->IsolateDisposed(isolate_, eventLoop_); currentRuntime_ = nullptr; return; } // Tear the rejection observer down before any isolate teardown: it references // the isolate and reads Caches, both of which are invalidated below. if (rejectionObserver_ != nullptr) { CFRunLoopObserverInvalidate(rejectionObserver_); CFRelease(rejectionObserver_); rejectionObserver_ = nullptr; } // Drop any pending uncaughtErrorPolicy "throw" deposit for this isolate so a // stale entry can't outlive the isolate it keys on. NativeScriptException::OnIsolateTeardown(isolate_); auto currentIsolate = this->isolate_; int gateId = Caches::Get(this->isolate_)->getGateId(); { // First, so IsAlive turns false: native callbacks arriving from here on // bail before taking the Locker. A block's dispose still pins and locks // until the gate closes below. SpinLock lock(isolatesMutex_); Runtime::isolates_.erase( std::remove(Runtime::isolates_.begin(), Runtime::isolates_.end(), this->isolate_), Runtime::isolates_.end()); Caches::Get(isolate_)->InvalidateIsolate(); } this->isolate_->TerminateExecution(); // TODO: fix race condition on workers where a queue can leak (maybe calling Terminate before // Initialize?) Caches::Workers->ForEach([currentIsolate](int& key, std::shared_ptr<Caches::WorkerState>& value) { auto childWorkerWrapper = static_cast<WorkerWrapper*>(value->UserData()); if (childWorkerWrapper->GetMainIsolate() == currentIsolate) { childWorkerWrapper->Terminate(); } return false; }); { v8::Locker lock(isolate_); // Flag this isolate's in-flight async graph loads dead and Reset their // context Globals — while the isolate is still alive, under the Locker // above — so fetch completions still queued on background NSURLSession // queues become no-ops. This MUST precede the event-loop Shutdown: a // post the loop drops is destroyed on the POSTING (background) thread, // and quiescing first guarantees such a task holds only already-Reset // Globals by then. The rest of the loader state (registry / waiters) // lives in a Caches state slot and is destroyed with the isolate's // Caches below. Worker isolates quiesce the same way. tns::QuiesceModuleLoadsForIsolate(isolate_); // Stop the event loop before any handle disposal: queued entries touch // caches and persistents that go away below, and posts from other threads // must start dropping now. if (eventLoop_ != nullptr) { eventLoop_->Shutdown(); } // Before DisposeAllRegistered: the env's reference lists hold v8::Globals, // so its teardown needs the isolate alive and locked. NapiEnv::Destroy(static_cast<NapiEnv*>(this->napiEnv_)); this->napiEnv_ = nullptr; ObjectManager::DisposeAllRegistered(isolate_); IsolateTracked::SweepAll(isolate_); // After the loop stopped: a port force-closed here can no longer be woken, // and the disentangle both delivers the close sentinels this isolate's // siblings are owed and puts each port's queue beyond the reach of the // threads that were filling it. messaging::CloseAllPorts(isolate_); if (IsRuntimeWorker()) { // Only the registry entry: the wrapper outlives this runtime, and the // worker thread lets go of it once this destructor has returned. Caches::Workers->Remove(this->workerId_); } Caches::Remove(this->isolate_); this->isolate_->SetData(Constants::RUNTIME_SLOT, nullptr); // Last, and under the Locker: from here on nothing reads a wrapper through // a JS object, so threads that never pinned may free theirs without the // lock, and threads already pinned see the gate closed once they get it. IsolateGates::Close(gateId); } DisposeIsolateWhenPossible(this->isolate_, gateId); // Matched erase: only removes the registry entry while it still maps to // this runtime's loop, so a worker isolate that reuses this pointer after // the (possibly deferred) Dispose can't be evicted by us. if (eventLoop_ != nullptr) { NativeScriptPlatform::Instance()->IsolateDisposed(currentIsolate, eventLoop_); } currentRuntime_ = nullptr; } Runtime* Runtime::GetRuntime(v8::Isolate* isolate) { return static_cast<Runtime*>(isolate->GetData(Constants::RUNTIME_SLOT)); } void Runtime::Init() { Isolate* isolate = isolate_; bool isWorker = IsRuntimeWorker(); std::shared_ptr<Caches> cache = Caches::Init(isolate, nextIsolateId.fetch_add(1, std::memory_order_relaxed)); { SpinLock lock(isolatesMutex_); Runtime::isolates_.emplace_back(isolate); } initialized_ = true; // Before anything can build an IsolateWrapper for this isolate. IsolateGates::Open(cache->getGateId()); cache->isWorker = isWorker; cache->ObjectCtorInitializer = MetadataBuilder::GetOrCreateConstructorFunctionTemplate; cache->StructInstanceFactory = MetadataBuilder::NewStructInstance; Isolate::Scope isolate_scope(isolate); HandleScope handle_scope(isolate); Local<FunctionTemplate> globalTemplateFunction = FunctionTemplate::New(isolate); globalTemplateFunction->SetClassName(tns::ToV8String(isolate, "NativeScriptGlobalObject")); tns::binding::CreateInternalBindingTemplates(isolate, globalTemplateFunction); Local<ObjectTemplate> globalTemplate = ObjectTemplate::New(isolate, globalTemplateFunction); DefineNativeScriptVersion(isolate, globalTemplate); // Worker::Init(isolate, globalTemplate, isWorker); DefineTimeMethod(isolate, globalTemplate); DefineDrainMicrotaskMethod(isolate, globalTemplate); DefineQueueMacrotaskMethod(isolate, globalTemplate); // queueMicrotask(callback) per spec { Local<FunctionTemplate> qmtTemplate = FunctionTemplate::New(isolate, [](const FunctionCallbackInfo<Value>& info) { auto* isolate = info.GetIsolate(); if (info.Length() < 1 || !info[0]->IsFunction()) { isolate->ThrowException(Exception::TypeError( tns::ToV8String(isolate, "queueMicrotask: callback must be a function"))); return; } v8::Local<v8::Function> cb = info[0].As<v8::Function>(); isolate->EnqueueMicrotask(cb); }); globalTemplate->Set(tns::ToV8String(isolate, "queueMicrotask"), qmtTemplate); } ObjectManager::Init(isolate, globalTemplate); LazyGlobals::Init(isolate, globalTemplate); MetadataBuilder::RegisterConstantsOnGlobalObject(isolate, globalTemplate, isWorker); isolate->SetCaptureStackTraceForUncaughtExceptions(true, 100, StackTrace::kOverview); // Enable dynamic import() support (handle API rename across V8 versions) #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wdeprecated-declarations" isolate->SetHostImportModuleDynamicallyCallback(tns::ImportModuleDynamicallyCallback); #pragma clang diagnostic pop // Set up import.meta callback isolate->SetHostInitializeImportMetaObjectCallback(InitializeImportMetaObject); isolate->AddMessageListener(NativeScriptException::OnUncaughtError); isolate->SetPromiseRejectCallback(NativeScriptException::OnPromiseRejected); Local<Context> context = Context::New(isolate, nullptr, globalTemplate); context->Enter(); // Drain tracked unhandled promise rejections once per runloop turn, just // before the loop sleeps. The info pointer is the isolate; the callback // re-validates liveness because the isolate may be torn down between turns. CFRunLoopObserverContext observerContext = {0, isolate, nullptr, nullptr, nullptr}; rejectionObserver_ = CFRunLoopObserverCreate(kCFAllocatorDefault, kCFRunLoopBeforeWaiting, /*repeats*/ true, /*order*/ 0, Runtime::DrainRejectionsObserver, &observerContext); CFRunLoopAddObserver(runtimeLoop_, rejectionObserver_, kCFRunLoopCommonModes); DefineGlobalObject(context, isWorker); DefineCollectFunction(context); PromiseProxy::Init(context); Events::Init(context); Worker::InitEvents(context); ErrorEvents::Init(context); StructuredClone::Init(context); Performance::Init(context); Console::Init(context); WeakRef::Init(context); // The dev primitives (configureLoader, invalidateModules, …) live in the // `ns:module` builtin module, materialized lazily per realm on first // resolution (see `BuildNsModuleBinding` in ModuleInternalCallbacks.mm for // the member list) — nothing to install here. // URL blob support (internal/blob-url.js); failures are tolerated — // compile-and-run-if-possible. v8::Local<v8::Value> blobMethodsResult; bool blobMethodsOk = BuiltinLoader::RunBuiltin(context, BuiltinId::kBlobUrl).ToLocal(&blobMethodsResult); (void)blobMethodsOk; this->moduleInternal_ = std::make_unique<ModuleInternal>(context); ArgConverter::Init(context); ClassBuilder::RegisterBaseTypeScriptExtendsFunction( context); // Register the __extends function to the global object ClassBuilder::RegisterNativeTypeScriptExtendsFunction( context); // Override the __extends function for native objects TSHelpers::Init(context); InlineFunctions::Init(context); cache->SetContext(context); this->napiEnv_ = NapiEnv::Create(context); } void Runtime::RunMainScript() { Isolate* isolate = this->GetIsolate(); v8::Locker locker(isolate); Isolate::Scope isolate_scope(isolate); HandleScope handle_scope(isolate); try { this->moduleInternal_->RunModule(isolate, "./"); } catch (NativeScriptException& ex) { // A failed entry module is fatal in every build — an app whose main // module did not run has no defined state to continue in. Log the cause // before unwinding so it survives even if the terminate handler doesn't // print exception details. Log(@"Fatal: the main module failed to run: %s", ex.getMessage().c_str()); throw; } } void Runtime::RunModule(const std::string moduleName) { Isolate* isolate = this->GetIsolate(); Isolate::Scope isolate_scope(isolate); HandleScope handle_scope(isolate); this->moduleInternal_->RunModule(isolate, moduleName); } EntryEvaluationState Runtime::PollMainEntryEvaluation(std::string* rejectionReason) { Isolate* isolate = this->GetIsolate(); if (isolate == nullptr || this->moduleInternal_ == nullptr) { return EntryEvaluationState::kNone; } v8::Locker locker(isolate); Isolate::Scope isolate_scope(isolate); HandleScope handle_scope(isolate); Local<Context> context = Caches::Get(isolate)->GetContext(); if (context.IsEmpty()) { return EntryEvaluationState::kNone; } Context::Scope context_scope(context); // RunMainScript launches "./"; the promise lives under the resolved path. const std::string entryPath = ResolveMainEntryFromPackageJson(RuntimeConfig.ApplicationPath); return ModuleInternal::PollEntryEvaluation(isolate, entryPath, rejectionReason); } void Runtime::EvictMainEntry() { Isolate* isolate = this->GetIsolate(); if (isolate == nullptr || this->moduleInternal_ == nullptr) { return; } v8::Locker locker(isolate); Isolate::Scope isolate_scope(isolate); HandleScope handle_scope(isolate); Local<Context> context = Caches::Get(isolate)->GetContext(); if (context.IsEmpty()) { return; } Context::Scope context_scope(context); RemoveModuleFromRegistry(isolate, ResolveMainEntryFromPackageJson(RuntimeConfig.ApplicationPath)); } bool Runtime::IsExecutionTerminating() { Isolate* isolate = this->GetIsolate(); if (isolate == nullptr) { return false; } v8::Locker locker(isolate); Isolate::Scope isolate_scope(isolate); return isolate->IsExecutionTerminating(); } void Runtime::RunScript(const std::string script) { Isolate* isolate = this->GetIsolate(); v8::Locker locker(isolate); Isolate::Scope isolate_scope(isolate); HandleScope handle_scope(isolate); this->moduleInternal_->RunScript(isolate, script); } Isolate* Runtime::GetIsolate() { return this->isolate_; } const int Runtime::WorkerId() { return this->workerId_; } id Runtime::GetAppConfigValue(std::string key) { if (AppPackageJson == nil) { NSString* packageJsonPath = [[NSString stringWithUTF8String:RuntimeConfig.ApplicationPath.c_str()] stringByAppendingPathComponent:@"package.json"]; NSData* data = [NSData dataWithContentsOfFile:packageJsonPath]; if (data) { NSError* error = nil; NSDictionary* dict = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error]; AppPackageJson = [[NSDictionary alloc] initWithDictionary:dict]; } } // Generic cache for all keys to avoid repeated NSString conversion and NSDictionary hashing { std::lock_guard<std::mutex> lock(AppConfigCacheMutex); auto it = AppConfigCache.find(key); if (it != AppConfigCache.end()) { return it->second; } } id result = nil; if (AppPackageJson != nil) { NSString* nsKey = [NSString stringWithUTF8String:key.c_str()]; result = AppPackageJson[nsKey]; } // Store in cache (can cache nil as NSNull to differentiate presence if desired; for now, cache // as-is) { std::lock_guard<std::mutex> lock(AppConfigCacheMutex); AppConfigCache[key] = result; } return result; } bool Runtime::showErrorDisplay() { id value = GetAppConfigValue("showErrorDisplay"); return value ? [value boolValue] : false; } void Runtime::DefineGlobalObject(Local<Context> context, bool isWorker) { Isolate* isolate = v8::Isolate::GetCurrent(); Local<Object> global = context->Global(); const PropertyAttribute readOnlyFlags = static_cast<PropertyAttribute>(PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly); if (!global ->DefineOwnProperty(context, ToV8String(v8::Isolate::GetCurrent(), "global"), global, readOnlyFlags) .FromMaybe(false)) { tns::Assert(false, isolate); } if (isWorker && !global ->DefineOwnProperty(context, ToV8String(v8::Isolate::GetCurrent(), "self"), global, readOnlyFlags) .FromMaybe(false)) { tns::Assert(false, isolate); } } void Runtime::DefineCollectFunction(Local<Context> context) { Isolate* isolate = v8::Isolate::GetCurrent(); Local<Object> global = context->Global(); Local<Value> value; bool success = global->Get(context, tns::ToV8String(isolate, "gc")).ToLocal(&value); tns::Assert(success, isolate); if (value.IsEmpty() || !value->IsFunction()) { return; } Local<v8::Function> gcFunc = value.As<v8::Function>(); const PropertyAttribute readOnlyFlags = static_cast<PropertyAttribute>(PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly); success = global ->DefineOwnProperty(context, tns::ToV8String(isolate, "__collect"), gcFunc, readOnlyFlags) .FromMaybe(false); tns::Assert(success, isolate); } double Runtime::PerformanceNowMillis() { return (platform_->MonotonicallyIncreasingTime() - timeOriginMonotonic_) * 1000.0; } void Runtime::DefineNativeScriptVersion(Isolate* isolate, Local<ObjectTemplate> globalTemplate) { const PropertyAttribute readOnlyFlags = static_cast<PropertyAttribute>(PropertyAttribute::DontDelete | PropertyAttribute::ReadOnly); globalTemplate->Set(ToV8String(isolate, "__runtimeVersion"), ToV8String(isolate, NATIVESCRIPT_VERSION), readOnlyFlags); } void Runtime::DefineTimeMethod(v8::Isolate* isolate, v8::Local<v8::ObjectTemplate> globalTemplate) { Local<FunctionTemplate> timeFunctionTemplate = FunctionTemplate::New(isolate, [](const FunctionCallbackInfo<Value>& info) { auto nano = std::chrono::time_point_cast<std::chrono::nanoseconds>( std::chrono::steady_clock::now()); double duration = nano.time_since_epoch().count() / 1000000.0; info.GetReturnValue().Set(duration); }); globalTemplate->Set(ToV8String(isolate, "__time"), timeFunctionTemplate); } void Runtime::DefineDrainMicrotaskMethod(v8::Isolate* isolate, v8::Local<v8::ObjectTemplate> globalTemplate) { Local<FunctionTemplate> drainMicrotaskTemplate = FunctionTemplate::New(isolate, [](const FunctionCallbackInfo<Value>& info) { info.GetIsolate()->PerformMicrotaskCheckpoint(); }); globalTemplate->Set(ToV8String(isolate, "__drainMicrotaskQueue"), drainMicrotaskTemplate); } // TODO: remove the __ns__ prefix once the event loop's ordered lane backs // public macrotask APIs (performance observers etc.) void Runtime::DefineQueueMacrotaskMethod(v8::Isolate* isolate, v8::Local<v8::ObjectTemplate> globalTemplate) { Local<FunctionTemplate> queueMacrotaskTemplate = FunctionTemplate::New(isolate, [](const FunctionCallbackInfo<Value>& info) { auto* isolate = info.GetIsolate(); if (info.Length() < 1 || !info[0]->IsFunction()) { isolate->ThrowException(Exception::TypeError( tns::ToV8String(isolate, "__ns__queueMacrotask: callback must be a function"))); return; } Runtime* runtime = Runtime::GetRuntime(isolate); if (runtime == nullptr || runtime->GetEventLoop() == nullptr) { return; } auto callback = std::make_shared<Persistent<v8::Function>>(isolate, info[0].As<v8::Function>()); // the ordered lane is one due-ordered domain with JS timers, so the // callback runs as a macrotask in strict FIFO order with them runtime->GetEventLoop()->PostOrdered([isolate, callback]() { auto cache = Caches::Get(isolate); Local<Context> context = cache->GetContext(); Context::Scope context_scope(context); Local<v8::Function> cb = callback->Get(isolate); callback->Reset(); // no TryCatch: like timer callbacks, uncaught errors surface // through the isolate's message listener (void)cb->Call(context, context->Global(), 0, nullptr); }); }); globalTemplate->Set(ToV8String(isolate, "__ns__queueMacrotask"), queueMacrotaskTemplate); } void Runtime::DefineDateTimeConfigurationChangeNotificationMethod( v8::Isolate* isolate, v8::Local<v8::ObjectTemplate> globalTemplate) { Local<FunctionTemplate> drainMicrotaskTemplate = FunctionTemplate::New(isolate, [](const FunctionCallbackInfo<Value>& info) { info.GetIsolate()->DateTimeConfigurationChangeNotification( Isolate::TimeZoneDetection::kRedetect); }); globalTemplate->Set(ToV8String(isolate, "__dateTimeConfigurationChangeNotification"), drainMicrotaskTemplate); } void Runtime::DrainRejectionsObserver(CFRunLoopObserverRef observer, CFRunLoopActivity activity, void* info) { Isolate* isolate = static_cast<Isolate*>(info); if (!Runtime::IsAlive(isolate)) { return; } auto cache = Caches::Get(isolate); // HasPending is an atomic read: OnReject can run on any thread holding the // v8::Locker, so pending_ itself must only be touched under the lock below. if (!cache->IsValid() || cache->PromiseRejections == nullptr || !cache->PromiseRejections->HasPending()) { return; } v8::Locker locker(isolate); Isolate::Scope isolate_scope(isolate); HandleScope handle_scope(isolate); Local<Context> context = cache->GetContext(); Context::Scope context_scope(context); cache->PromiseRejections->Drain(context); } bool Runtime::IsAlive(const Isolate* isolate) { // speedup lookup by avoiding locking if thread locals match // note: this can be a problem when the Runtime is deleted in a different thread that it was // created which could happen under some specific embedding scenarios if ((Isolate::TryGetCurrent() == isolate || (currentRuntime_ != nullptr && currentRuntime_->GetIsolate() == isolate)) && Caches::Get((Isolate*)isolate)->IsValid()) { return true; } SpinLock lock(isolatesMutex_); return std::find(Runtime::isolates_.begin(), Runtime::isolates_.end(), isolate) != Runtime::isolates_.end(); } void Runtime::NotifyMemoryPressure(MemoryPressureLevel level) { std::vector<std::pair<Isolate*, int>> targets; { SpinLock lock(isolatesMutex_); targets.reserve(Runtime::isolates_.size()); for (Isolate* isolate : Runtime::isolates_) { targets.emplace_back(isolate, Caches::Get(isolate)->getGateId()); } } // Notified outside the registry lock: off its own thread V8 posts a task to // the isolate's runner. The pin keeps the isolate from being disposed. for (auto& [isolate, gateId] : targets) { if (IsolateGates::TryPin(gateId)) { isolate->MemoryPressureNotification(level); IsolateGates::Unpin(gateId); } } } napi_env Runtime::GetNapiEnvIfAlive(const Runtime* runtime) { if (runtime == nullptr) { return nullptr; } SpinLock lock(isolatesMutex_); for (Isolate* isolate : Runtime::isolates_) { Runtime* candidate = GetRuntime(isolate); // The home-loop comparison closes the allocator-reuse (ABA) hole: a stale // thread-local can only exist on the dead runtime's home thread, and a // recycled same-address Runtime homed on this thread would have // overwritten that thread-local — so an address match with a foreign home // loop can only be a recycled pointer. if (candidate == runtime && candidate->RuntimeLoop() == CFRunLoopGetCurrent()) { return candidate->GetNapiEnv(); } } return nullptr; } Platform* Runtime::platform_ = nullptr; std::vector<Isolate*> Runtime::isolates_; bool Runtime::v8Initialized_ = false; thread_local Runtime* Runtime::currentRuntime_ = nullptr; SpinMutex Runtime::isolatesMutex_; } // namespace tns |
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