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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-09-27 00:07:33 +0300
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2021-09-27 23:41:18 +0300
commit348df7bc4b5d5281e50c42b5c44b125d7049eb57 (patch)
treed8e3f80a7a6ea356bdf109d4c3bd0f55479bfcaa /src/qcam/assets/feathericons/list.svg
parent1ec7072827931ac8a5ec7cf46292ff9510d10249 (diff)
Documentation: application-developer: Use correct type to store size
The return type of std::vector::size() is size_t. Use the same type, instead of unsigned int, to store its return value when retrieving the number of allocated buffers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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generated by cgit v1.2.1 (git 2.18.0) at 2025-02-25 11:16:06 +0000
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2020, Google Inc.
 *
 * unixsocket_ipc.cpp - Unix socket IPC test
 */

#include <algorithm>
#include <fcntl.h>
#include <iostream>
#include <limits.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#include <libcamera/base/event_dispatcher.h>
#include <libcamera/base/thread.h>
#include <libcamera/base/timer.h>
#include <libcamera/base/utils.h>

#include "libcamera/internal/ipa_data_serializer.h"
#include "libcamera/internal/ipc_pipe.h"
#include "libcamera/internal/ipc_pipe_unixsocket.h"
#include "libcamera/internal/process.h"

#include "test.h"

using namespace std;
using namespace libcamera;

enum {
	CmdExit = 0,
	CmdGetSync = 1,
	CmdSetAsync = 2,
};

const int32_t kInitialValue = 1337;
const int32_t kChangedValue = 9001;

class UnixSocketTestIPCSlave
{
public:
	UnixSocketTestIPCSlave()
		: value_(kInitialValue), exitCode_(EXIT_FAILURE), exit_(false)
	{
		dispatcher_ = Thread::current()->eventDispatcher();
		ipc_.readyRead.connect(this, &UnixSocketTestIPCSlave::readyRead);
	}

	int run(UniqueFD fd)
	{
		if (ipc_.bind(std::move(fd))) {
			cerr << "Failed to connect to IPC channel" << endl;
			return EXIT_FAILURE;
		}

		while (!exit_)
			dispatcher_->processEvents();

		ipc_.close();

		return exitCode_;
	}

private:
	void readyRead()
	{
		IPCUnixSocket::Payload message;
		int ret;

		ret = ipc_.receive(&message);
		if (ret) {
			cerr << "Receive message failed: " << ret << endl;
			return;
		}

		IPCMessage ipcMessage(message);
		uint32_t cmd = ipcMessage.header().cmd;

		switch (cmd) {
		case CmdExit: {
			exit_ = true;
			break;
		}

		case CmdGetSync: {
			IPCMessage::Header header = { cmd, ipcMessage.header().cookie };
			IPCMessage response(header);

			vector<uint8_t> buf;
			tie(buf, ignore) = IPADataSerializer<int32_t>::serialize(value_);
			response.data().insert(response.data().end(), buf.begin(), buf.end());

			ret = ipc_.send(response.payload());
			if (ret < 0) {
				cerr << "Reply failed" << endl;
				stop(ret);
			}
			break;
		}

		case CmdSetAsync: {
			value_ = IPADataSerializer<int32_t>::deserialize(ipcMessage.data());
			break;
		}
		}
	}

	void stop(int code)
	{
		exitCode_ = code;
		exit_ = true;
	}

	int32_t value_;

	IPCUnixSocket ipc_;
	EventDispatcher *dispatcher_;
	int exitCode_;
	bool exit_;
};

class UnixSocketTestIPC : public Test
{
protected:
	int init()
	{
		return 0;
	}