mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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59 lines
2.6 KiB
C++
59 lines
2.6 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours.hpp>
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namespace ams::fssystem {
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/* ACCURATE_TO_VERSION: 13.4.0.0 */
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class IAsynchronousAccessSplitter {
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public:
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static IAsynchronousAccessSplitter *GetDefaultAsynchronousAccessSplitter();
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public:
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constexpr IAsynchronousAccessSplitter() = default;
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constexpr virtual ~IAsynchronousAccessSplitter() { /* ... */ }
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public:
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Result QueryNextOffset(s64 *out, s64 start_offset, s64 end_offset, s64 access_size, s64 alignment_size);
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public:
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virtual Result QueryAppropriateOffset(s64 *out, s64 offset, s64 access_size, s64 alignment_size) = 0;
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virtual Result QueryInvocationCount(s64 *out, s64 start_offset, s64 end_offset, s64 access_size, s64 alignment_size) { AMS_UNUSED(out, start_offset, end_offset, access_size, alignment_size); AMS_ABORT("TODO"); }
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};
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/* ACCURATE_TO_VERSION: 13.4.0.0 */
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class DefaultAsynchronousAccessSplitter final : public IAsynchronousAccessSplitter {
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public:
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constexpr DefaultAsynchronousAccessSplitter() = default;
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public:
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virtual Result QueryAppropriateOffset(s64 *out, s64 offset, s64 access_size, s64 alignment_size) override {
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/* Align the access. */
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*out = util::AlignDown(offset + access_size, alignment_size);
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R_SUCCEED();
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}
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virtual Result QueryInvocationCount(s64 *out, s64 start_offset, s64 end_offset, s64 access_size, s64 alignment_size) override {
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/* Determine aligned access count. */
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*out = util::DivideUp(end_offset - util::AlignDown(start_offset, alignment_size), access_size);
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R_SUCCEED();
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}
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};
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/* ACCURATE_TO_VERSION: 13.4.0.0 */
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inline IAsynchronousAccessSplitter *IAsynchronousAccessSplitter::GetDefaultAsynchronousAccessSplitter() {
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static constinit DefaultAsynchronousAccessSplitter s_default_access_splitter;
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return std::addressof(s_default_access_splitter);
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}
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}
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