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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
#define CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
#include <map>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
class GURL;
namespace IPC {
class Message;
class Sender;
}
namespace content {
class EmbeddedWorkerInstance;
class ServiceWorkerContextCore;
// Acts as a thin stub between MessageFilter and each EmbeddedWorkerInstance,
// which sends/receives messages to/from each EmbeddedWorker in child process.
//
// Hangs off ServiceWorkerContextCore (its reference is also held by each
// EmbeddedWorkerInstance). Operated only on IO thread.
class CONTENT_EXPORT EmbeddedWorkerRegistry
: public NON_EXPORTED_BASE(base::RefCounted<EmbeddedWorkerRegistry>) {
public:
explicit EmbeddedWorkerRegistry(
base::WeakPtr<ServiceWorkerContextCore> context);
// Creates and removes a new worker instance entry for bookkeeping.
// This doesn't actually start or stop the worker.
scoped_ptr<EmbeddedWorkerInstance> CreateWorker();
void RemoveWorker(int embedded_worker_id);
// Called from EmbeddedWorkerInstance, relayed to the child process.
bool StartWorker(int process_id,
int embedded_worker_id,
int64 service_worker_version_id,
const GURL& script_url);
bool StopWorker(int process_id,
int embedded_worker_id);
// Keeps a map from process_id to sender information.
void AddChildProcessSender(int process_id, IPC::Sender* sender);
void RemoveChildProcessSender(int process_id);
private:
friend class base::RefCounted<EmbeddedWorkerRegistry>;
~EmbeddedWorkerRegistry();
bool Send(int process_id, IPC::Message* message);
typedef std::map<int, EmbeddedWorkerInstance*> WorkerInstanceMap;
typedef std::map<int, IPC::Sender*> ProcessToSenderMap;
base::WeakPtr<ServiceWorkerContextCore> context_;
WorkerInstanceMap worker_map_;
ProcessToSenderMap process_sender_map_;
int next_embedded_worker_id_;
DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerRegistry);
};
} // namespace content
#endif // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_REGISTRY_H_
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