unplugged-system/device/google/cuttlefish/host/libs/msg_queue/msg_queue.h

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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <string>
namespace cuttlefish {
class SysVMessageQueue {
public:
static std::unique_ptr<SysVMessageQueue> Create(const std::string& path,
char proj_id,
bool auto_close = true);
~SysVMessageQueue();
int Send(void* data, size_t size, bool block);
ssize_t Receive(void* data, size_t size, long msgtyp, bool block);
private:
SysVMessageQueue(int msgid, bool auto_close);
int msgid_;
bool auto_close_;
};
} // namespace cuttlefish