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// Copyright 2016 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_COMMON_SERVICE_MANAGER_CHILD_CONNECTION_H_
#define CONTENT_COMMON_SERVICE_MANAGER_CHILD_CONNECTION_H_
#include <memory>
#include <string>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/process/process_handle.h"
#include "base/sequenced_task_runner.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/system/invitation.h"
#include "services/service_manager/public/cpp/identity.h"
#include "services/service_manager/public/mojom/connector.mojom.h"
namespace service_manager {
class Connector;
}
namespace content {
// Helper class to establish a connection between the Service Manager and a
// single child process. Process hosts can use this when launching new processes
// which should be registered with the service manager.
class CONTENT_EXPORT ChildConnection {
public:
// Prepares a new child connection for a child process which will be
// identified to the service manager as |child_identity|. |child_identity|'s
// instance field must be unique among all child connections using the same
// service name. |connector| is the connector to use to establish the
// connection.
ChildConnection(const service_manager::Identity& child_identity,
mojo::OutgoingInvitation* invitation,
service_manager::Connector* connector,
scoped_refptr<base::SequencedTaskRunner> io_task_runner);
~ChildConnection();
// Binds an implementation of |interface_name| to |interface_pipe| in the
// child.
void BindInterface(const std::string& interface_name,
mojo::ScopedMessagePipeHandle interface_pipe);
const service_manager::Identity& child_identity() const {
return child_identity_;
}
// A token which must be passed to the child process via
// |service_manager::switches::kServicePipeToken| in order for the child to
// initialize its end of the Service Manager connection pipe.
std::string service_token() const { return service_token_; }
// Sets the child connection's process handle. This should be called as soon
// as the process has been launched, and the connection will not be fully
// functional until this is called.
void SetProcessHandle(base::ProcessHandle handle);
private:
class IOThreadContext;
scoped_refptr<IOThreadContext> context_;
service_manager::Identity child_identity_;
std::string service_token_;
base::ProcessHandle process_handle_ = base::kNullProcessHandle;
base::WeakPtrFactory<ChildConnection> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ChildConnection);
};
} // namespace content
#endif // CONTENT_COMMON_SERVICE_MANAGER_CHILD_CONNECTION_H_
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