/* * 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 . */ #pragma once #include namespace ams::fssystem { /* ACCURATE_TO_VERSION: 13.4.0.0 */ class IAsynchronousAccessSplitter { public: static IAsynchronousAccessSplitter *GetDefaultAsynchronousAccessSplitter(); public: constexpr IAsynchronousAccessSplitter() = default; constexpr virtual ~IAsynchronousAccessSplitter() { /* ... */ } public: Result QueryNextOffset(s64 *out, s64 start_offset, s64 end_offset, s64 access_size, s64 alignment_size); public: virtual Result QueryAppropriateOffset(s64 *out, s64 offset, s64 access_size, s64 alignment_size) = 0; 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"); } }; /* ACCURATE_TO_VERSION: 13.4.0.0 */ class DefaultAsynchronousAccessSplitter final : public IAsynchronousAccessSplitter { public: constexpr DefaultAsynchronousAccessSplitter() = default; public: virtual Result QueryAppropriateOffset(s64 *out, s64 offset, s64 access_size, s64 alignment_size) override { /* Align the access. */ *out = util::AlignDown(offset + access_size, alignment_size); return ResultSuccess(); } virtual Result QueryInvocationCount(s64 *out, s64 start_offset, s64 end_offset, s64 access_size, s64 alignment_size) override { /* Determine aligned access count. */ *out = util::DivideUp(end_offset - util::AlignDown(start_offset, alignment_size), access_size); return ResultSuccess(); } }; /* ACCURATE_TO_VERSION: 13.4.0.0 */ inline IAsynchronousAccessSplitter *IAsynchronousAccessSplitter::GetDefaultAsynchronousAccessSplitter() { static constinit DefaultAsynchronousAccessSplitter s_default_access_splitter; return std::addressof(s_default_access_splitter); } }