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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef IPC_MACH_PORT_ATTACHMENT_MAC_H_
#define IPC_MACH_PORT_ATTACHMENT_MAC_H_
#include <mach/mach.h>
#include <stdint.h>
#include "base/process/process_handle.h"
#include "ipc/ipc_message_attachment.h"
#include "ipc/ipc_message_support_export.h"
#include "ipc/mach_port_mac.h"
namespace IPC {
namespace internal {
// This class represents an OSX mach_port_t attached to a Chrome IPC message.
class IPC_MESSAGE_SUPPORT_EXPORT MachPortAttachmentMac
: public MessageAttachment {
public:
// This constructor increments the ref count of |mach_port_| and takes
// ownership of the result. Should only be called by the sender of a Chrome
// IPC message.
explicit MachPortAttachmentMac(mach_port_t mach_port);
MachPortAttachmentMac(const MachPortAttachmentMac&) = delete;
MachPortAttachmentMac& operator=(const MachPortAttachmentMac&) = delete;
enum FromWire {
FROM_WIRE,
};
// This constructor takes ownership of |mach_port|, but does not modify its
// ref count. Should only be called by the receiver of a Chrome IPC message.
MachPortAttachmentMac(mach_port_t mach_port, FromWire from_wire);
Type GetType() const override;
mach_port_t get_mach_port() const { return mach_port_; }
// The caller of this method has taken ownership of |mach_port_|.
void reset_mach_port_ownership() { owns_mach_port_ = false; }
private:
~MachPortAttachmentMac() override;
const mach_port_t mach_port_;
// In the sender process, the attachment owns the Mach port of a newly created
// message. The attachment broker will eventually take ownership of
// |mach_port_|.
// In the destination process, the attachment owns |mach_port_| until
// ParamTraits<MachPortMac>::Read() is called, which takes ownership.
bool owns_mach_port_;
};
} // namespace internal
} // namespace IPC
#endif // IPC_MACH_PORT_ATTACHMENT_MAC_H_
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