refactor: rename the atom directory to shell
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117
shell/common/node_bindings.h
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117
shell/common/node_bindings.h
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// Copyright (c) 2013 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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#ifndef ATOM_COMMON_NODE_BINDINGS_H_
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#define ATOM_COMMON_NODE_BINDINGS_H_
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#include "base/files/file_path.h"
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#include "base/macros.h"
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#include "base/memory/weak_ptr.h"
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#include "base/single_thread_task_runner.h"
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#include "uv.h" // NOLINT(build/include)
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#include "v8/include/v8.h"
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namespace base {
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class MessageLoop;
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}
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namespace node {
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class Environment;
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class MultiIsolatePlatform;
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} // namespace node
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namespace atom {
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class NodeBindings {
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public:
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enum class BrowserEnvironment {
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BROWSER,
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RENDERER,
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WORKER,
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};
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static NodeBindings* Create(BrowserEnvironment browser_env);
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static void RegisterBuiltinModules();
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static bool IsInitialized();
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static base::FilePath::StringType GetHelperResourcesPath();
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virtual ~NodeBindings();
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// Setup V8, libuv.
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void Initialize();
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// Create the environment and load node.js.
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node::Environment* CreateEnvironment(
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v8::Handle<v8::Context> context,
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node::MultiIsolatePlatform* platform = nullptr);
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// Load node.js in the environment.
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void LoadEnvironment(node::Environment* env);
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// Prepare for message loop integration.
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void PrepareMessageLoop();
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// Do message loop integration.
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virtual void RunMessageLoop();
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// Gets/sets the environment to wrap uv loop.
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void set_uv_env(node::Environment* env) { uv_env_ = env; }
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node::Environment* uv_env() const { return uv_env_; }
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uv_loop_t* uv_loop() const { return uv_loop_; }
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protected:
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explicit NodeBindings(BrowserEnvironment browser_env);
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// Called to poll events in new thread.
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virtual void PollEvents() = 0;
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// Run the libuv loop for once.
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void UvRunOnce();
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// Make the main thread run libuv loop.
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void WakeupMainThread();
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// Interrupt the PollEvents.
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void WakeupEmbedThread();
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// Which environment we are running.
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const BrowserEnvironment browser_env_;
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// Current thread's MessageLoop.
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scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
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// Current thread's libuv loop.
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uv_loop_t* uv_loop_;
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private:
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// Thread to poll uv events.
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static void EmbedThreadRunner(void* arg);
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// Whether the libuv loop has ended.
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bool embed_closed_ = false;
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// Loop used when constructed in WORKER mode
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uv_loop_t worker_loop_;
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// Dummy handle to make uv's loop not quit.
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uv_async_t dummy_uv_handle_;
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// Thread for polling events.
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uv_thread_t embed_thread_;
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// Semaphore to wait for main loop in the embed thread.
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uv_sem_t embed_sem_;
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// Environment that to wrap the uv loop.
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node::Environment* uv_env_ = nullptr;
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base::WeakPtrFactory<NodeBindings> weak_factory_;
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DISALLOW_COPY_AND_ASSIGN(NodeBindings);
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};
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} // namespace atom
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#endif // ATOM_COMMON_NODE_BINDINGS_H_
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