9143668887
IPCUnixSocket::create() creates two file descriptors. One of them is stored in IPCUnixSocket and the other is returned to a caller. This clarifies the ownership using UniqueFD. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
60 lines
1.0 KiB
C++
60 lines
1.0 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* ipc_unixsocket.h - IPC mechanism based on Unix sockets
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*/
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#pragma once
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#include <stdint.h>
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#include <sys/types.h>
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#include <vector>
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#include <libcamera/base/signal.h>
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#include <libcamera/base/unique_fd.h>
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namespace libcamera {
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class EventNotifier;
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class IPCUnixSocket
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{
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public:
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struct Payload {
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std::vector<uint8_t> data;
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std::vector<int32_t> fds;
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};
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IPCUnixSocket();
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~IPCUnixSocket();
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UniqueFD create();
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int bind(UniqueFD fd);
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void close();
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bool isBound() const;
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int send(const Payload &payload);
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int receive(Payload *payload);
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Signal<> readyRead;
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private:
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struct Header {
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uint32_t data;
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uint8_t fds;
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};
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int sendData(const void *buffer, size_t length, const int32_t *fds, unsigned int num);
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int recvData(void *buffer, size_t length, int32_t *fds, unsigned int num);
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void dataNotifier();
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UniqueFD fd_;
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bool headerReceived_;
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struct Header header_;
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EventNotifier *notifier_;
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};
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} /* namespace libcamera */
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