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

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/*
* 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 <vapours.hpp>
#include <stratosphere/os/os_message_queue_common.hpp>
#include <stratosphere/os/os_multiple_wait_api.hpp>
#include <stratosphere/os/os_multiple_wait_types.hpp>
namespace ams::os {
namespace impl {
class AutoMultiWaitHolder {
private:
MultiWaitHolderType m_holder;
public:
template<typename T>
ALWAYS_INLINE explicit AutoMultiWaitHolder(MultiWaitType *multi_wait, T &&arg) {
InitializeMultiWaitHolder(std::addressof(m_holder), std::forward<T>(arg));
LinkMultiWaitHolder(multi_wait, std::addressof(m_holder));
}
ALWAYS_INLINE ~AutoMultiWaitHolder() {
UnlinkMultiWaitHolder(std::addressof(m_holder));
FinalizeMultiWaitHolder(std::addressof(m_holder));
}
ALWAYS_INLINE std::pair<MultiWaitHolderType *, int> ConvertResult(const std::pair<MultiWaitHolderType *, int> result, int index) {
if (result.first == std::addressof(m_holder)) {
return std::make_pair(static_cast<MultiWaitHolderType *>(nullptr), index);
} else {
return result;
}
}
};
template<typename F>
inline std::pair<MultiWaitHolderType *, int> WaitAnyImpl(F &&func, MultiWaitType *multi_wait, int) {
return std::pair<MultiWaitHolderType *, int>(func(multi_wait), -1);
}
template<typename F, typename T, typename... Args>
inline std::pair<MultiWaitHolderType *, int> WaitAnyImpl(F &&func, MultiWaitType *multi_wait, int index, T &&x, Args &&... args) {
AutoMultiWaitHolder holder(multi_wait, std::forward<T>(x));
return holder.ConvertResult(WaitAnyImpl(std::forward<F>(func), multi_wait, index + 1, std::forward<Args>(args)...), index);
}
template<typename F, typename... Args>
inline std::pair<MultiWaitHolderType *, int> WaitAnyImpl(F &&func, MultiWaitType *multi_wait, Args &&... args) {
return WaitAnyImpl(std::forward<F>(func), multi_wait, 0, std::forward<Args>(args)...);
}
class TempMultiWait {
private:
MultiWaitType m_multi_wait;
public:
ALWAYS_INLINE TempMultiWait() {
os::InitializeMultiWait(std::addressof(m_multi_wait));
}
ALWAYS_INLINE ~TempMultiWait() {
os::FinalizeMultiWait(std::addressof(m_multi_wait));
}
MultiWaitType *Get() {
return std::addressof(m_multi_wait);
}
};
template<typename F, typename... Args>
inline std::pair<MultiWaitHolderType *, int> WaitAnyImpl(F &&func, Args &&... args) {
TempMultiWait temp_multi_wait;
return WaitAnyImpl(std::forward<F>(func), temp_multi_wait.Get(), 0, std::forward<Args>(args)...);
}
using WaitAnyFunction = MultiWaitHolderType * (*)(MultiWaitType *);
class NotBoolButInt {
private:
int m_value;
public:
constexpr ALWAYS_INLINE NotBoolButInt(int v) : m_value(v) { /* ... */ }
constexpr ALWAYS_INLINE operator int() const { return m_value; }
explicit operator bool() const = delete;
};
}
template<typename... Args> requires (sizeof...(Args) > 0)
inline std::pair<MultiWaitHolderType *, int> WaitAny(MultiWaitType *multi_wait, Args &&... args) {
return impl::WaitAnyImpl(static_cast<impl::WaitAnyFunction>(&::ams::os::WaitAny), multi_wait, std::forward<Args>(args)...);
}
template<typename... Args> requires (sizeof...(Args) > 0)
inline int WaitAny(Args &&... args) {
return impl::WaitAnyImpl(static_cast<impl::WaitAnyFunction>(&::ams::os::WaitAny), std::forward<Args>(args)...).second;
}
template<typename... Args> requires (sizeof...(Args) > 0)
inline std::pair<MultiWaitHolderType *, int> TryWaitAny(MultiWaitType *multi_wait, Args &&... args) {
return impl::WaitAnyImpl(static_cast<impl::WaitAnyFunction>(&::ams::os::TryWaitAny), multi_wait, std::forward<Args>(args)...);
}
template<typename... Args> requires (sizeof...(Args) > 0)
inline impl::NotBoolButInt TryWaitAny(Args &&... args) {
return impl::WaitAnyImpl(static_cast<impl::WaitAnyFunction>(&::ams::os::TryWaitAny), std::forward<Args>(args)...).second;
}
}