/
node_main.cc
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/
node_main.cc
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// Copyright (c) 2015 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/app/node_main.h"
#include <memory>
#include <string>
#include <utility>
#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/task/thread_pool/thread_pool_instance.h"
#include "base/threading/thread_task_runner_handle.h"
#include "electron/electron_version.h"
#include "gin/array_buffer.h"
#include "gin/public/isolate_holder.h"
#include "gin/v8_initializer.h"
#include "native_mate/dictionary.h"
#include "shell/app/uv_task_runner.h"
#include "shell/browser/javascript_environment.h"
#include "shell/browser/node_debugger.h"
#include "shell/common/api/electron_bindings.h"
#include "shell/common/crash_reporter/crash_reporter.h"
#include "shell/common/native_mate_converters/string16_converter.h"
#include "shell/common/node_bindings.h"
#include "shell/common/node_includes.h"
#if defined(_WIN64)
#include "shell/common/crash_reporter/crash_reporter_win.h"
#endif
namespace electron {
#if !defined(OS_LINUX)
void AddExtraParameter(const std::string& key, const std::string& value) {
crash_reporter::CrashReporter::GetInstance()->AddExtraParameter(key, value);
}
void RemoveExtraParameter(const std::string& key) {
crash_reporter::CrashReporter::GetInstance()->RemoveExtraParameter(key);
}
#endif
int NodeMain(int argc, char* argv[]) {
base::CommandLine::Init(argc, argv);
int exit_code = 1;
{
// Feed gin::PerIsolateData with a task runner.
argv = uv_setup_args(argc, argv);
uv_loop_t* loop = uv_default_loop();
scoped_refptr<UvTaskRunner> uv_task_runner(new UvTaskRunner(loop));
base::ThreadTaskRunnerHandle handle(uv_task_runner);
// Initialize feature list.
auto feature_list = std::make_unique<base::FeatureList>();
feature_list->InitializeFromCommandLine("", "");
base::FeatureList::SetInstance(std::move(feature_list));
#if defined(_WIN64)
crash_reporter::CrashReporterWin::SetUnhandledExceptionFilter();
#endif
// Explicitly register electron's builtin modules.
NodeBindings::RegisterBuiltinModules();
int exec_argc;
const char** exec_argv;
node::Init(&argc, const_cast<const char**>(argv), &exec_argc, &exec_argv);
gin::V8Initializer::LoadV8Snapshot(
gin::V8Initializer::V8SnapshotFileType::kWithAdditionalContext);
gin::V8Initializer::LoadV8Natives();
// V8 requires a task scheduler apparently
base::ThreadPoolInstance::CreateAndStartWithDefaultParams("Electron");
// Initialize gin::IsolateHolder.
JavascriptEnvironment gin_env(loop);
gin_env.isolate()->SetMicrotasksPolicy(v8::MicrotasksPolicy::kExplicit);
node::IsolateData* isolate_data =
node::CreateIsolateData(gin_env.isolate(), loop, gin_env.platform());
CHECK_NE(nullptr, isolate_data);
node::Environment* env =
node::CreateEnvironment(isolate_data, gin_env.context(), argc, argv,
exec_argc, exec_argv, false);
CHECK_NE(nullptr, env);
// Enable support for v8 inspector.
NodeDebugger node_debugger(env);
node_debugger.Start();
node::BootstrapEnvironment(env);
mate::Dictionary process(gin_env.isolate(), env->process_object());
#if defined(OS_WIN)
process.SetMethod("log", &ElectronBindings::Log);
#endif
process.SetMethod("crash", &ElectronBindings::Crash);
// Setup process.crashReporter.start in child node processes
auto reporter = mate::Dictionary::CreateEmpty(gin_env.isolate());
reporter.SetMethod("start", &crash_reporter::CrashReporter::StartInstance);
#if !defined(OS_LINUX)
reporter.SetMethod("addExtraParameter", &AddExtraParameter);
reporter.SetMethod("removeExtraParameter", &RemoveExtraParameter);
#endif
process.Set("crashReporter", reporter);
mate::Dictionary versions;
if (process.Get("versions", &versions)) {
versions.SetReadOnly(ELECTRON_PROJECT_NAME, ELECTRON_VERSION_STRING);
}
node::LoadEnvironment(env);
bool more;
do {
more = uv_run(env->event_loop(), UV_RUN_ONCE);
gin_env.platform()->DrainTasks(env->isolate());
if (more == false) {
node::EmitBeforeExit(env);
// Emit `beforeExit` if the loop became alive either after emitting
// event, or after running some callbacks.
more = uv_loop_alive(env->event_loop());
if (uv_run(env->event_loop(), UV_RUN_NOWAIT) != 0)
more = true;
}
} while (more == true);
node_debugger.Stop();
exit_code = node::EmitExit(env);
env->set_can_call_into_js(false);
node::RunAtExit(env);
v8::Isolate* isolate = env->isolate();
node::FreeEnvironment(env);
node::FreeIsolateData(isolate_data);
gin_env.platform()->DrainTasks(isolate);
gin_env.platform()->CancelPendingDelayedTasks(isolate);
gin_env.platform()->UnregisterIsolate(isolate);
}
// According to "src/gin/shell/gin_main.cc":
//
// gin::IsolateHolder waits for tasks running in ThreadPool in its
// destructor and thus must be destroyed before ThreadPool starts skipping
// CONTINUE_ON_SHUTDOWN tasks.
base::ThreadPoolInstance::Get()->Shutdown();
v8::V8::Dispose();
return exit_code;
}
} // namespace electron