thread_safe_script_container.h | Explore in Territory

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_SERVICE_WORKER_THREAD_SAFE_SCRIPT_CONTAINER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_SERVICE_WORKER_THREAD_SAFE_SCRIPT_CONTAINER_H_

#include <memory>
#include <utility>

#include "base/synchronization/condition_variable.h"
#include "base/synchronization/lock.h"
#include "base/thread_annotations.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/network/http_header_map.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/kurl_hash.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/thread_safe_ref_counted.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"

namespace blink {

// ThreadSafeScriptContainer stores the scripts of a service worker for
// startup. This container is created for each service worker. The IO thread
// adds scripts to the container, and the worker thread takes the scripts.
// Note: Due to the above explanations about multi-threads access on this
// container, all the non-thread-safe members like KURL and String need to be
// deep-copied.
//
// This class uses explicit synchronization because it needs to support
// synchronous importScripts() from the worker thread.
//
// This class is RefCounted because there is no ordering guarantee of lifetime
// of its owners, i.e. ServiceWorkerInstalledScriptsManager and its
// Internal class. ServiceWorkerInstalledScriptsManager is destroyed earlier
// than Internal if the worker is terminated before all scripts are streamed,
// and Internal is destroyed earlier if all of scripts are received before
// finishing script evaluation.
class MODULES_EXPORT ThreadSafeScriptContainer
    : public WTF::ThreadSafeRefCounted<ThreadSafeScriptContainer> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_SERVICE_WORKER_THREAD_SAFE_SCRIPT_CONTAINER_H_
chromium/third_party/blink/renderer/modules/service_worker/thread_safe_script_container.h
