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86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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* Copyright (c) 2024, Andrew Kaster <akaster@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Platform.h>
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#ifndef AK_OS_MACH
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# error "MachPort is only available on Mach platforms"
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#endif
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#include <AK/Error.h>
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#include <AK/Noncopyable.h>
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extern "C" {
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#include <mach/mach.h>
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}
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namespace Core {
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// https://www.gnu.org/software/hurd/gnumach-doc/Major-Concepts.html#Major-Concepts
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class MachPort {
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AK_MAKE_NONCOPYABLE(MachPort);
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public:
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// https://www.gnu.org/software/hurd/gnumach-doc/Exchanging-Port-Rights.html#Exchanging-Port-Rights
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enum class PortRight : mach_port_right_t {
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Send = MACH_PORT_RIGHT_SEND,
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Receive = MACH_PORT_RIGHT_RECEIVE,
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SendOnce = MACH_PORT_RIGHT_SEND_ONCE,
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PortSet = MACH_PORT_RIGHT_PORT_SET,
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DeadName = MACH_PORT_RIGHT_DEAD_NAME,
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};
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enum class MessageRight : mach_msg_type_name_t {
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MoveReceive = MACH_MSG_TYPE_MOVE_RECEIVE,
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MoveSend = MACH_MSG_TYPE_MOVE_SEND,
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MoveSendOnce = MACH_MSG_TYPE_MOVE_SEND_ONCE,
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CopySend = MACH_MSG_TYPE_COPY_SEND,
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MakeSend = MACH_MSG_TYPE_MAKE_SEND,
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MakeSendOnce = MACH_MSG_TYPE_MAKE_SEND_ONCE,
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#if defined(AK_OS_MACOS)
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CopyReceive = MACH_MSG_TYPE_COPY_RECEIVE,
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DisposeReceive = MACH_MSG_TYPE_DISPOSE_RECEIVE,
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DisposeSend = MACH_MSG_TYPE_DISPOSE_SEND,
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DisposeSendOnce = MACH_MSG_TYPE_DISPOSE_SEND_ONCE,
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#endif
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};
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MachPort() = default;
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MachPort(MachPort&& other);
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MachPort& operator=(MachPort&& other);
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~MachPort();
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mach_port_t release();
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static ErrorOr<MachPort> create_with_right(PortRight);
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static MachPort adopt_right(mach_port_t, PortRight);
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ErrorOr<MachPort> insert_right(MessageRight);
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#if defined(AK_OS_MACOS)
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// https://opensource.apple.com/source/launchd/launchd-842.92.1/liblaunch/bootstrap.h.auto.html
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static ErrorOr<MachPort> look_up_from_bootstrap_server(ByteString const& service_name);
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ErrorOr<void> register_with_bootstrap_server(ByteString const& service_name);
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#endif
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// FIXME: mach_msg wrapper? For now just let the owner poke into the internals
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mach_port_t port() { return m_port; }
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private:
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MachPort(PortRight, mach_port_t);
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void unref_port();
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PortRight m_right { PortRight::DeadName };
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mach_port_t m_port { MACH_PORT_NULL };
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};
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Error mach_error_to_error(kern_return_t error);
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}
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