86a3ef2709
This dodges a heap allocation when sending 0 or 1 fd across the IPC boundary (which covers every message.)
58 lines
1 KiB
C++
58 lines
1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@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/NonnullRefPtrVector.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <unistd.h>
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namespace IPC {
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class AutoCloseFileDescriptor : public RefCounted<AutoCloseFileDescriptor> {
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public:
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AutoCloseFileDescriptor(int fd)
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: m_fd(fd)
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{
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}
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~AutoCloseFileDescriptor()
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{
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if (m_fd != -1)
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close(m_fd);
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}
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int value() const { return m_fd; }
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private:
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int m_fd;
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};
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struct MessageBuffer {
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Vector<u8, 1024> data;
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NonnullRefPtrVector<AutoCloseFileDescriptor, 1> fds;
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};
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enum class ErrorCode : u32 {
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PeerDisconnected
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};
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class Message {
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public:
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virtual ~Message();
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virtual u32 endpoint_magic() const = 0;
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virtual int message_id() const = 0;
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virtual const char* message_name() const = 0;
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virtual bool valid() const = 0;
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virtual MessageBuffer encode() const = 0;
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protected:
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Message();
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};
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}
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