119 lines
		
	
	
	
		
			3.8 KiB
			
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			119 lines
		
	
	
	
		
			3.8 KiB
			
		
	
	
	
		
			C++
		
	
	
	
	
	
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "atom/app/node_main.h"
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#include <memory>
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#include <utility>
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#include "atom/app/uv_task_runner.h"
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#include "atom/browser/javascript_environment.h"
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#include "atom/browser/node_debugger.h"
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#include "atom/common/api/atom_bindings.h"
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#include "atom/common/crash_reporter/crash_reporter.h"
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#include "atom/common/native_mate_converters/string16_converter.h"
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#include "atom/common/node_bindings.h"
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#include "base/command_line.h"
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#include "base/feature_list.h"
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#include "base/task_scheduler/task_scheduler.h"
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#include "base/threading/thread_task_runner_handle.h"
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#include "gin/array_buffer.h"
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#include "gin/public/isolate_holder.h"
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#include "gin/v8_initializer.h"
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#include "native_mate/dictionary.h"
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#include "atom/common/node_includes.h"
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namespace atom {
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int NodeMain(int argc, char* argv[]) {
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  base::CommandLine::Init(argc, argv);
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  int exit_code = 1;
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  {
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    // Feed gin::PerIsolateData with a task runner.
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    argv = uv_setup_args(argc, argv);
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    uv_loop_t* loop = uv_default_loop();
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    scoped_refptr<UvTaskRunner> uv_task_runner(new UvTaskRunner(loop));
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    base::ThreadTaskRunnerHandle handle(uv_task_runner);
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    // Initialize feature list.
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    auto feature_list = std::make_unique<base::FeatureList>();
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    feature_list->InitializeFromCommandLine("", "");
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    base::FeatureList::SetInstance(std::move(feature_list));
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    gin::V8Initializer::LoadV8Snapshot(
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        gin::V8Initializer::V8SnapshotFileType::kWithAdditionalContext);
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    gin::V8Initializer::LoadV8Natives();
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    // V8 requires a task scheduler apparently
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    base::TaskScheduler::CreateAndStartWithDefaultParams("Electron");
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    // Initialize gin::IsolateHolder.
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    JavascriptEnvironment gin_env;
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    // Explicitly register electron's builtin modules.
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    NodeBindings::RegisterBuiltinModules();
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    int exec_argc;
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    const char** exec_argv;
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    node::Init(&argc, const_cast<const char**>(argv), &exec_argc, &exec_argv);
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    node::Environment* env = node::CreateEnvironment(
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        node::CreateIsolateData(gin_env.isolate(), loop, gin_env.platform()),
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        gin_env.context(), argc, argv, exec_argc, exec_argv);
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    // Enable support for v8 inspector.
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    NodeDebugger node_debugger(env);
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    node_debugger.Start();
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    mate::Dictionary process(gin_env.isolate(), env->process_object());
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#if defined(OS_WIN)
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    process.SetMethod("log", &AtomBindings::Log);
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#endif
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    process.SetMethod("crash", &AtomBindings::Crash);
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    // Setup process.crashReporter.start in child node processes
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    auto reporter = mate::Dictionary::CreateEmpty(gin_env.isolate());
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    reporter.SetMethod("start", &crash_reporter::CrashReporter::StartInstance);
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    process.Set("crashReporter", reporter);
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    node::LoadEnvironment(env);
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    bool more;
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    do {
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      more = uv_run(env->event_loop(), UV_RUN_ONCE);
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      gin_env.platform()->DrainTasks(env->isolate());
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      if (more == false) {
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        node::EmitBeforeExit(env);
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        // Emit `beforeExit` if the loop became alive either after emitting
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        // event, or after running some callbacks.
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        more = uv_loop_alive(env->event_loop());
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        if (uv_run(env->event_loop(), UV_RUN_NOWAIT) != 0)
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          more = true;
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      }
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    } while (more == true);
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    exit_code = node::EmitExit(env);
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    node::RunAtExit(env);
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    gin_env.platform()->DrainTasks(env->isolate());
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    gin_env.platform()->CancelPendingDelayedTasks(env->isolate());
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    node::FreeEnvironment(env);
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  }
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  // According to "src/gin/shell/gin_main.cc":
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  //
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  // gin::IsolateHolder waits for tasks running in TaskScheduler in its
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  // destructor and thus must be destroyed before TaskScheduler starts skipping
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  // CONTINUE_ON_SHUTDOWN tasks.
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  base::TaskScheduler::GetInstance()->Shutdown();
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  v8::V8::Dispose();
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  return exit_code;
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}
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}  // namespace atom
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