Atmosphere/libraries/libstratosphere/include/stratosphere/os/os_managed_handle.hpp
2021-09-30 19:21:08 -07:00

88 lines
2.4 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 <stratosphere/os/os_common_types.hpp>
namespace ams::os {
class ManagedHandle {
NON_COPYABLE(ManagedHandle);
private:
Handle hnd;
public:
constexpr ManagedHandle() : hnd(INVALID_HANDLE) { /* ... */ }
constexpr ManagedHandle(Handle h) : hnd(h) { /* ... */ }
~ManagedHandle() {
if (this->hnd != INVALID_HANDLE) {
R_ABORT_UNLESS(svcCloseHandle(this->hnd));
this->hnd = INVALID_HANDLE;
}
}
ManagedHandle(ManagedHandle&& rhs) {
this->hnd = rhs.hnd;
rhs.hnd = INVALID_HANDLE;
}
ManagedHandle &operator=(ManagedHandle&& rhs) {
rhs.Swap(*this);
return *this;
}
explicit operator bool() const {
return this->hnd != INVALID_HANDLE;
}
void Swap(ManagedHandle &rhs) {
std::swap(this->hnd, rhs.hnd);
}
Handle Get() const {
return this->hnd;
}
Handle *GetPointer() {
return &this->hnd;
}
Handle *GetPointerAndClear() {
this->Clear();
return this->GetPointer();
}
Handle Move() {
const Handle h = this->hnd;
this->hnd = INVALID_HANDLE;
return h;
}
void Detach() {
const Handle h = this->Move();
AMS_UNUSED(h);
}
void Reset(Handle h) {
ManagedHandle(h).Swap(*this);
}
void Clear() {
this->Reset(INVALID_HANDLE);
}
};
}