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Atmosphere/libraries/libstratosphere/include/stratosphere/os/os_system_event.hpp

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3 KiB
C++

/*
* 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 "os_event.hpp"
namespace ams::os {
class WaitableHolder;
namespace impl {
class InterProcessEvent;
}
enum class SystemEventState {
Uninitialized,
Event,
InterProcessEvent,
};
class SystemEvent {
friend class WaitableHolder;
NON_COPYABLE(SystemEvent);
NON_MOVEABLE(SystemEvent);
private:
union {
util::TypedStorage<Event, sizeof(Event), alignof(Event)> storage_for_event;
util::TypedStorage<impl::InterProcessEvent, 3 * sizeof(Handle), alignof(Handle)> storage_for_inter_process_event;
};
SystemEventState state;
private:
Event &GetEvent();
const Event &GetEvent() const;
impl::InterProcessEvent &GetInterProcessEvent();
const impl::InterProcessEvent &GetInterProcessEvent() const;
public:
SystemEvent() : state(SystemEventState::Uninitialized) { /* ... */ }
SystemEvent(bool inter_process, bool autoclear = true);
SystemEvent(Handle read_handle, bool manage_read_handle, Handle write_handle, bool manage_write_handle, bool autoclear = true);
SystemEvent(Handle read_handle, bool manage_read_handle, bool autoclear = true) : SystemEvent(read_handle, manage_read_handle, INVALID_HANDLE, false, autoclear) { /* ... */ }
~SystemEvent();
Result InitializeAsEvent(bool autoclear = true);
Result InitializeAsInterProcessEvent(bool autoclear = true);
void AttachHandles(Handle read_handle, bool manage_read_handle, Handle write_handle, bool manage_write_handle, bool autoclear = true);
void AttachReadableHandle(Handle read_handle, bool manage_read_handle, bool autoclear = true);
void AttachWritableHandle(Handle write_handle, bool manage_write_handle, bool autoclear = true);
Handle DetachReadableHandle();
Handle DetachWritableHandle();
Handle GetReadableHandle() const;
Handle GetWritableHandle() const;
void Finalize();
SystemEventState GetState() const {
return this->state;
}
void Signal();
void Reset();
void Wait();
bool TryWait();
bool TimedWait(u64 ns);
};
}