mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-24 21:02:03 +00:00
73 lines
2.7 KiB
C++
73 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 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::lm::srv {
|
|
|
|
class LogBuffer {
|
|
NON_COPYABLE(LogBuffer);
|
|
NON_MOVEABLE(LogBuffer);
|
|
private:
|
|
struct BufferInfo {
|
|
u8 *m_head;
|
|
size_t m_stored_size;
|
|
size_t m_reference_count;
|
|
};
|
|
public:
|
|
using FlushFunction = bool (*)(const u8 *data, size_t size);
|
|
private:
|
|
BufferInfo m_buffers[2];
|
|
BufferInfo *m_push_buffer;
|
|
BufferInfo *m_flush_buffer;
|
|
size_t m_buffer_size;
|
|
FlushFunction m_flush_function;
|
|
os::SdkMutex m_push_buffer_mutex;
|
|
os::SdkMutex m_flush_buffer_mutex;
|
|
os::SdkConditionVariable m_cv_push_ready;
|
|
os::SdkConditionVariable m_cv_flush_ready;
|
|
bool m_push_canceled;
|
|
size_t m_push_ready_wait_count;
|
|
public:
|
|
constexpr explicit LogBuffer(u8 *buffer, size_t buffer_size, FlushFunction f)
|
|
: m_buffers{}, m_push_buffer(m_buffers + 0), m_flush_buffer(m_buffers + 1),
|
|
m_buffer_size(buffer_size / 2), m_flush_function(f), m_push_buffer_mutex{},
|
|
m_flush_buffer_mutex{}, m_cv_push_ready{}, m_cv_flush_ready{},
|
|
m_push_canceled(false), m_push_ready_wait_count(0)
|
|
{
|
|
AMS_ASSERT(buffer != nullptr);
|
|
AMS_ASSERT(buffer_size > 0);
|
|
AMS_ASSERT(f != nullptr);
|
|
|
|
m_buffers[0].m_head = buffer;
|
|
m_buffers[1].m_head = buffer + (buffer_size / 2);
|
|
}
|
|
|
|
static LogBuffer &GetDefaultInstance();
|
|
|
|
bool Push(const void *data, size_t size) { return this->PushImpl(data, size, true); }
|
|
bool TryPush(const void *data, size_t size) { return this->PushImpl(data, size, false); }
|
|
|
|
void CancelPush();
|
|
|
|
bool Flush() { return this->FlushImpl(true); }
|
|
bool TryFlush() { return this->FlushImpl(false); }
|
|
private:
|
|
bool PushImpl(const void *data, size_t size, bool blocking);
|
|
bool FlushImpl(bool blocking);
|
|
};
|
|
|
|
}
|