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Atmosphere/libraries/libstratosphere/source/fssrv/fssrv_retry_utility.hpp

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1.4 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::fssrv::impl {
template<typename F>
ALWAYS_INLINE Result RetryFinitelyForDataCorrupted(F f) {
/* All official uses of this retry once, for two tries total. */
constexpr auto MaxTryCount = 2;
/* Perform the operation, retrying on fs::ResultDataCorrupted. */
auto tries = 0;
while (true) {
/* Try to perform the operation. */
const auto rc = f();
/* If we should, retry. */
if (fs::ResultDataCorrupted::Includes(rc)) {
if ((++tries) < MaxTryCount) {
continue;
}
}
/* Ensure the current attempt succeeded. */
R_TRY(rc);
/* Return success. */
R_SUCCEED();
}
}
}