mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/*
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* Copyright (c) 2019-2020 Adubbz, 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 <switch.h>
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#include <stratosphere.hpp>
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#include "../ncm_path_utils.hpp"
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namespace ams::ncm::impl {
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class PlaceHolderAccessor {
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private:
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class CacheEntry {
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public:
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PlaceHolderId id;
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FILE *handle;
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u64 counter;
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};
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private:
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static constexpr size_t MaxCaches = 0x2;
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std::array<CacheEntry, MaxCaches> caches;
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PathString root_path;
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u64 cur_counter;
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os::Mutex cache_mutex;
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MakePlaceHolderPathFunc make_placeholder_path_func;
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bool delay_flush;
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private:
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Result Open(FILE** out_handle, PlaceHolderId placeholder_id);
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CacheEntry *FindInCache(PlaceHolderId placeholder_id);
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bool LoadFromCache(FILE** out_handle, PlaceHolderId placeholder_id);
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CacheEntry *GetFreeEntry();
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void StoreToCache(FILE *handle, PlaceHolderId placeholder_id);
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void Invalidate(CacheEntry *entry);
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public:
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PlaceHolderAccessor() : cur_counter(0), delay_flush(false) {
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for (size_t i = 0; i < MaxCaches; i++) {
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caches[i].id = InvalidPlaceHolderId;
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}
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}
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inline void MakeRootPath(PathString *placeholder_root) {
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path::GetPlaceHolderRootPath(placeholder_root, this->root_path);
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}
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inline void MakePath(PathString *placeholder_path, PlaceHolderId placeholder_id) {
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PathString root_path;
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this->MakeRootPath(std::addressof(root_path));
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this->make_placeholder_path_func(placeholder_path, placeholder_id, root_path);
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}
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void Initialize(const char *root, MakePlaceHolderPathFunc path_func, bool delay_flush);
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unsigned int GetDirectoryDepth();
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void GetPath(PathString *out_placeholder_path, PlaceHolderId placeholder_id);
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Result Create(PlaceHolderId placeholder_id, size_t size);
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Result Delete(PlaceHolderId placeholder_id);
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Result Write(PlaceHolderId placeholder_id, size_t offset, const void *buffer, size_t size);
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Result SetSize(PlaceHolderId placeholder_id, size_t size);
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Result GetSize(bool *found_in_cache, size_t *out_size, PlaceHolderId placeholder_id);
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Result EnsureRecursively(PlaceHolderId placeholder_id);
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void InvalidateAll();
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};
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}
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