electron/atom/renderer/web_worker_observer.cc
2017-03-20 12:52:46 -07:00

73 lines
2 KiB
C++

// Copyright (c) 2017 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "atom/renderer/web_worker_observer.h"
#include "atom/common/api/atom_bindings.h"
#include "atom/common/api/event_emitter_caller.h"
#include "atom/common/asar/asar_util.h"
#include "atom/common/node_bindings.h"
#include "base/lazy_instance.h"
#include "base/threading/thread_local.h"
#include "atom/common/node_includes.h"
namespace atom {
namespace {
static base::LazyInstance<base::ThreadLocalPointer<WebWorkerObserver>>
lazy_tls = LAZY_INSTANCE_INITIALIZER;
} // namespace
// static
WebWorkerObserver* WebWorkerObserver::GetCurrent() {
WebWorkerObserver* self = lazy_tls.Pointer()->Get();
return self ? self : new WebWorkerObserver;
}
WebWorkerObserver::WebWorkerObserver()
: node_bindings_(NodeBindings::Create(NodeBindings::WORKER)),
atom_bindings_(new AtomBindings(node_bindings_->uv_loop())) {
lazy_tls.Pointer()->Set(this);
}
WebWorkerObserver::~WebWorkerObserver() {
lazy_tls.Pointer()->Set(nullptr);
node::FreeEnvironment(node_bindings_->uv_env());
asar::ClearArchives();
}
void WebWorkerObserver::ContextCreated(v8::Local<v8::Context> context) {
v8::Context::Scope context_scope(context);
// Start the embed thread.
node_bindings_->PrepareMessageLoop();
// Setup node environment for each window.
node::Environment* env = node_bindings_->CreateEnvironment(context);
// Add Electron extended APIs.
atom_bindings_->BindTo(env->isolate(), env->process_object());
// Load everything.
node_bindings_->LoadEnvironment(env);
// Make uv loop being wrapped by window context.
node_bindings_->set_uv_env(env);
// Give the node loop a run to make sure everything is ready.
node_bindings_->RunMessageLoop();
}
void WebWorkerObserver::ContextWillDestroy(v8::Local<v8::Context> context) {
node::Environment* env = node::Environment::GetCurrent(context);
if (env)
mate::EmitEvent(env->isolate(), env->process_object(), "exit");
delete this;
}
} // namespace atom