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Atmosphere/stratosphere/dmnt.gen2/source/dmnt2_htcs_receive_buffer.hpp
2021-09-11 19:41:47 -07:00

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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stratosphere.hpp>
namespace ams::dmnt {
class HtcsReceiveBuffer {
public:
static constexpr size_t ReceiveBufferSize = 4_KB;
private:
u8 m_buffer[ReceiveBufferSize];
os::Event m_readable_event;
os::Event m_writable_event;
os::SdkMutex m_mutex;
size_t m_readable_size;
size_t m_offset;
bool m_valid;
public:
HtcsReceiveBuffer() : m_readable_event(os::EventClearMode_ManualClear), m_writable_event(os::EventClearMode_ManualClear), m_mutex(), m_readable_size(), m_offset(), m_valid(true) { /* ... */ }
ALWAYS_INLINE bool IsReadable() const { return m_readable_size != 0; }
ALWAYS_INLINE bool IsWritable() const { return m_readable_size == 0; }
ALWAYS_INLINE bool IsValid() const { return m_valid; }
ssize_t Read(void *dst, size_t size);
ssize_t Write(const void *src, size_t size);
bool WaitToBeReadable();
bool WaitToBeReadable(TimeSpan timeout);
bool WaitToBeWritable();
void Invalidate();
};
}