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59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
// Copyright (c) 2017 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 ELECTRON_SHELL_RENDERER_WEB_WORKER_OBSERVER_H_
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#define ELECTRON_SHELL_RENDERER_WEB_WORKER_OBSERVER_H_
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#include <memory>
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#include "base/containers/flat_set.h"
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#include "v8/include/v8-forward.h"
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namespace node {
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class Environment;
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} // namespace node
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namespace electron {
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class ElectronBindings;
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class NodeBindings;
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// Watches for WebWorker and insert node integration to it.
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class WebWorkerObserver {
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public:
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WebWorkerObserver();
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~WebWorkerObserver();
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// Returns the WebWorkerObserver for current worker thread.
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static WebWorkerObserver* GetCurrent();
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// Creates a new WebWorkerObserver for a given context.
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static WebWorkerObserver* Create();
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// disable copy
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WebWorkerObserver(const WebWorkerObserver&) = delete;
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WebWorkerObserver& operator=(const WebWorkerObserver&) = delete;
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void WorkerScriptReadyForEvaluation(v8::Local<v8::Context> context);
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void ContextWillDestroy(v8::Local<v8::Context> context);
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private:
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// Full initialization for the first context on a thread.
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void InitializeNewEnvironment(v8::Local<v8::Context> context);
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// Share existing environment with a new context on a reused thread.
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void ShareEnvironmentWithContext(v8::Local<v8::Context> context);
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std::unique_ptr<NodeBindings> node_bindings_;
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std::unique_ptr<ElectronBindings> electron_bindings_;
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base::flat_set<std::shared_ptr<node::Environment>> environments_;
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// Number of active contexts using the environment on this thread.
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size_t active_context_count_ = 0;
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};
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} // namespace electron
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#endif // ELECTRON_SHELL_RENDERER_WEB_WORKER_OBSERVER_H_
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