| // Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "bin/dartdev_isolate.h" |
| |
| #if !defined(DART_PRECOMPILED_RUNTIME) |
| |
| #include <functional> |
| #include <memory> |
| |
| #include "bin/directory.h" |
| #include "bin/error_exit.h" |
| #include "bin/exe_utils.h" |
| #include "bin/file.h" |
| #include "bin/lockers.h" |
| #include "bin/platform.h" |
| #include "bin/process.h" |
| #include "include/dart_embedder_api.h" |
| #include "platform/utils.h" |
| |
| #define CHECK_RESULT(result) \ |
| if (Dart_IsError(result)) { \ |
| ProcessError(Dart_GetError(result), kErrorExitCode); \ |
| if (send_port_id != ILLEGAL_PORT) { \ |
| Dart_CloseNativePort(send_port_id); \ |
| } \ |
| Dart_ExitScope(); \ |
| Dart_ShutdownIsolate(); \ |
| return; \ |
| } |
| |
| namespace dart { |
| namespace bin { |
| |
| DartDevIsolate::DartDevRunner DartDevIsolate::runner_ = |
| DartDevIsolate::DartDevRunner(); |
| bool DartDevIsolate::should_run_dart_dev_ = false; |
| bool DartDevIsolate::print_usage_error_ = false; |
| Monitor* DartDevIsolate::DartDevRunner::monitor_ = new Monitor(); |
| DartDevIsolate::DartDev_Result DartDevIsolate::DartDevRunner::result_ = |
| DartDevIsolate::DartDev_Result_Unknown; |
| char** DartDevIsolate::DartDevRunner::script_ = nullptr; |
| char** DartDevIsolate::DartDevRunner::package_config_override_ = nullptr; |
| std::unique_ptr<char*[], void (*)(char*[])> |
| DartDevIsolate::DartDevRunner::argv_ = |
| std::unique_ptr<char*[], void (*)(char**)>(nullptr, [](char**) {}); |
| intptr_t DartDevIsolate::DartDevRunner::argc_ = 0; |
| |
| bool DartDevIsolate::ShouldParseCommand(const char* script_uri) { |
| // If script_uri is not a file path or of a known URI scheme, we can assume |
| // that this is a DartDev command. |
| return (!File::ExistsUri(nullptr, script_uri) && |
| (strncmp(script_uri, "http://", 7) != 0) && |
| (strncmp(script_uri, "https://", 8) != 0) && |
| (strncmp(script_uri, "file://", 7) != 0) && |
| (strncmp(script_uri, "package:", 8) != 0) && |
| (strncmp(script_uri, "google3://", 10) != 0)); |
| } |
| |
| Utils::CStringUniquePtr DartDevIsolate::TryResolveArtifactPath( |
| const char* filename) { |
| // |dir_prefix| includes the last path seperator. |
| auto dir_prefix = EXEUtils::GetDirectoryPrefixFromExeName(); |
| |
| // First assume we're in dart-sdk/bin. |
| char* snapshot_path = |
| Utils::SCreate("%ssnapshots/%s", dir_prefix.get(), filename); |
| if (File::Exists(nullptr, snapshot_path)) { |
| return Utils::CreateCStringUniquePtr(snapshot_path); |
| } |
| free(snapshot_path); |
| |
| // If we're not in dart-sdk/bin, we might be in one of the $SDK/out/* |
| // directories. Try to use a snapshot from a previously built SDK. |
| snapshot_path = Utils::SCreate("%s%s", dir_prefix.get(), filename); |
| if (File::Exists(nullptr, snapshot_path)) { |
| return Utils::CreateCStringUniquePtr(snapshot_path); |
| } |
| free(snapshot_path); |
| return Utils::CreateCStringUniquePtr(nullptr); |
| } |
| |
| Utils::CStringUniquePtr DartDevIsolate::TryResolveDartDevSnapshotPath() { |
| return TryResolveArtifactPath("dartdev.dart.snapshot"); |
| } |
| |
| Utils::CStringUniquePtr DartDevIsolate::TryResolveDartDevKernelPath() { |
| return TryResolveArtifactPath("dartdev.dill"); |
| } |
| |
| void DartDevIsolate::DartDevRunner::Run( |
| Dart_IsolateGroupCreateCallback create_isolate, |
| char** packages_file, |
| char** script, |
| CommandLineOptions* dart_options) { |
| create_isolate_ = create_isolate; |
| dart_options_ = dart_options; |
| package_config_override_ = packages_file; |
| script_ = script; |
| |
| // We've encountered an error during preliminary argument parsing so we'll |
| // output the standard help message and exit with an error code. |
| if (print_usage_error_) { |
| dart_options_->Reset(); |
| dart_options_->AddArgument("--help"); |
| } |
| |
| MonitorLocker locker(monitor_); |
| int result = Thread::Start("DartDev Runner", RunCallback, |
| reinterpret_cast<uword>(this)); |
| if (result != 0) { |
| FATAL1("Failed to start DartDev thread: %d", result); |
| } |
| monitor_->WaitMicros(Monitor::kNoTimeout); |
| |
| if (result_ == DartDevIsolate::DartDev_Result_Run) { |
| // Clear the DartDev dart_options and replace them with the processed |
| // options provided by DartDev. |
| dart_options_->Reset(); |
| dart_options_->AddArguments(const_cast<const char**>(argv_.get()), argc_); |
| } |
| } |
| |
| static Dart_CObject* GetArrayItem(Dart_CObject* message, intptr_t index) { |
| return message->value.as_array.values[index]; |
| } |
| |
| void DartDevIsolate::DartDevRunner::DartDevResultCallback( |
| Dart_Port dest_port_id, |
| Dart_CObject* message) { |
| // These messages are produced in pkg/dartdev/lib/src/vm_interop_handler.dart. |
| ASSERT(message->type == Dart_CObject_kArray); |
| int32_t type = GetArrayItem(message, 0)->value.as_int32; |
| switch (type) { |
| case DartDevIsolate::DartDev_Result_Run: { |
| result_ = DartDevIsolate::DartDev_Result_Run; |
| ASSERT(GetArrayItem(message, 1)->type == Dart_CObject_kString); |
| auto item2 = GetArrayItem(message, 2); |
| |
| ASSERT(item2->type == Dart_CObject_kString || |
| item2->type == Dart_CObject_kNull); |
| |
| if (*script_ != nullptr) { |
| free(*script_); |
| } |
| if (*package_config_override_ != nullptr) { |
| free(*package_config_override_); |
| *package_config_override_ = nullptr; |
| } |
| *script_ = Utils::StrDup(GetArrayItem(message, 1)->value.as_string); |
| |
| if (item2->type == Dart_CObject_kString) { |
| *package_config_override_ = Utils::StrDup(item2->value.as_string); |
| } |
| |
| ASSERT(GetArrayItem(message, 3)->type == Dart_CObject_kArray); |
| Dart_CObject* args = GetArrayItem(message, 3); |
| argc_ = args->value.as_array.length; |
| Dart_CObject** dart_args = args->value.as_array.values; |
| |
| auto deleter = [](char** args) { |
| for (intptr_t i = 0; i < argc_; ++i) { |
| free(args[i]); |
| } |
| delete[] args; |
| }; |
| argv_ = |
| std::unique_ptr<char*[], void (*)(char**)>(new char*[argc_], deleter); |
| for (intptr_t i = 0; i < argc_; ++i) { |
| argv_[i] = Utils::StrDup(dart_args[i]->value.as_string); |
| } |
| break; |
| } |
| case DartDevIsolate::DartDev_Result_Exit: { |
| ASSERT(GetArrayItem(message, 1)->type == Dart_CObject_kInt32); |
| int32_t dartdev_exit_code = GetArrayItem(message, 1)->value.as_int32; |
| |
| // If we're given a non-zero exit code, DartDev is signaling for us to |
| // shutdown. |
| int32_t exit_code = |
| print_usage_error_ ? kErrorExitCode : dartdev_exit_code; |
| Process::SetGlobalExitCode(exit_code); |
| |
| // If DartDev hasn't signaled for us to do anything else, we can assume |
| // there's nothing else for the VM to run and that we can exit. |
| if (result_ == DartDevIsolate::DartDev_Result_Unknown) { |
| result_ = DartDevIsolate::DartDev_Result_Exit; |
| } |
| |
| // DartDev is done processing the command. Unblock the main thread and |
| // continue the launch procedure. |
| DartDevRunner::monitor_->Notify(); |
| break; |
| } |
| default: |
| UNREACHABLE(); |
| } |
| } |
| |
| void DartDevIsolate::DartDevRunner::RunCallback(uword args) { |
| MonitorLocker locker_(DartDevRunner::monitor_); |
| DartDevRunner* runner = reinterpret_cast<DartDevRunner*>(args); |
| |
| // Hardcode flags to match those used to generate the DartDev snapshot. |
| Dart_IsolateFlags flags; |
| Dart_IsolateFlagsInitialize(&flags); |
| flags.enable_asserts = false; |
| flags.null_safety = true; |
| flags.use_field_guards = true; |
| flags.use_osr = true; |
| flags.is_system_isolate = true; |
| flags.branch_coverage = false; |
| |
| char* error; |
| Dart_Isolate dartdev_isolate = runner->create_isolate_( |
| DART_DEV_ISOLATE_NAME, DART_DEV_ISOLATE_NAME, nullptr, |
| runner->packages_file_, &flags, /* callback_data */ nullptr, |
| const_cast<char**>(&error)); |
| |
| if (dartdev_isolate == nullptr) { |
| ProcessError(error, kErrorExitCode); |
| free(error); |
| return; |
| } |
| |
| Dart_EnterIsolate(dartdev_isolate); |
| Dart_EnterScope(); |
| |
| // Retrieve the DartDev entrypoint. |
| Dart_Port send_port_id = ILLEGAL_PORT; |
| Dart_Handle root_lib = Dart_RootLibrary(); |
| Dart_Handle main_closure = |
| Dart_GetField(root_lib, Dart_NewStringFromCString("main")); |
| CHECK_RESULT(main_closure); |
| |
| if (!Dart_IsClosure(main_closure)) { |
| ProcessError("Unable to find 'main' in root library 'dartdev'", |
| kErrorExitCode); |
| Dart_ExitScope(); |
| Dart_ShutdownIsolate(); |
| return; |
| } |
| |
| // Create a SendPort that DartDev can use to communicate its results over. |
| send_port_id = |
| Dart_NewNativePort(DART_DEV_ISOLATE_NAME, DartDevResultCallback, false); |
| ASSERT(send_port_id != ILLEGAL_PORT); |
| Dart_Handle send_port = Dart_NewSendPort(send_port_id); |
| CHECK_RESULT(send_port); |
| |
| const intptr_t kNumIsolateArgs = 4; |
| Dart_Handle isolate_args[kNumIsolateArgs]; |
| isolate_args[0] = main_closure; // entryPoint |
| isolate_args[1] = runner->dart_options_->CreateRuntimeOptions(); // args |
| isolate_args[2] = send_port; // message |
| isolate_args[3] = Dart_True(); // isSpawnUri |
| |
| Dart_Handle isolate_lib = |
| Dart_LookupLibrary(Dart_NewStringFromCString("dart:isolate")); |
| Dart_Handle result = |
| Dart_Invoke(isolate_lib, Dart_NewStringFromCString("_startIsolate"), |
| kNumIsolateArgs, isolate_args); |
| CHECK_RESULT(result); |
| CHECK_RESULT(Dart_RunLoop()); |
| |
| Dart_CloseNativePort(send_port_id); |
| |
| Dart_ExitScope(); |
| Dart_ShutdownIsolate(); |
| } |
| |
| void DartDevIsolate::DartDevRunner::ProcessError(const char* msg, |
| int32_t exit_code) { |
| Syslog::PrintErr("%s.\n", msg); |
| Process::SetGlobalExitCode(exit_code); |
| result_ = DartDevIsolate::DartDev_Result_Exit; |
| DartDevRunner::monitor_->Notify(); |
| } |
| |
| DartDevIsolate::DartDev_Result DartDevIsolate::RunDartDev( |
| Dart_IsolateGroupCreateCallback create_isolate, |
| char** packages_file, |
| char** script, |
| CommandLineOptions* dart_options) { |
| runner_.Run(create_isolate, packages_file, script, dart_options); |
| return runner_.result(); |
| } |
| |
| #endif // if !defined(DART_PRECOMPILED_RUNTIME) |
| |
| } // namespace bin |
| } // namespace dart |