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author | comex <comexk@gmail.com> | 2023-07-02 00:01:11 +0200 |
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committer | comex <comexk@gmail.com> | 2023-07-02 00:01:11 +0200 |
commit | 98685d48e3cb9f25f6919f004ec62cadf33afad2 (patch) | |
tree | 9df2ce7f57370641589bfae7196c77b090bcbe0f /src/core/file_sys/vfs_real.cpp | |
parent | PR feedback + constification (diff) | |
parent | Update translations (2023-07-01) (#10972) (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/file_sys/vfs_real.cpp | 101 |
1 files changed, 64 insertions, 37 deletions
diff --git a/src/core/file_sys/vfs_real.cpp b/src/core/file_sys/vfs_real.cpp index 7a15d8438..b0515ec05 100644 --- a/src/core/file_sys/vfs_real.cpp +++ b/src/core/file_sys/vfs_real.cpp @@ -10,6 +10,7 @@ #include "common/fs/fs.h" #include "common/fs/path_util.h" #include "common/logging/log.h" +#include "core/file_sys/vfs.h" #include "core/file_sys/vfs_real.h" // For FileTimeStampRaw @@ -72,8 +73,10 @@ VfsEntryType RealVfsFilesystem::GetEntryType(std::string_view path_) const { return VfsEntryType::File; } -VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) { +VirtualFile RealVfsFilesystem::OpenFileFromEntry(std::string_view path_, std::optional<u64> size, + Mode perms) { const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault); + std::scoped_lock lk{list_lock}; if (auto it = cache.find(path); it != cache.end()) { if (auto file = it->second.lock(); file) { @@ -81,23 +84,30 @@ VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) { } } - if (!FS::Exists(path) || !FS::IsFile(path)) { + if (!size && !FS::IsFile(path)) { return nullptr; } auto reference = std::make_unique<FileReference>(); - this->InsertReferenceIntoList(*reference); + this->InsertReferenceIntoListLocked(*reference); - auto file = - std::shared_ptr<RealVfsFile>(new RealVfsFile(*this, std::move(reference), path, perms)); + auto file = std::shared_ptr<RealVfsFile>( + new RealVfsFile(*this, std::move(reference), path, perms, size)); cache[path] = file; return file; } +VirtualFile RealVfsFilesystem::OpenFile(std::string_view path_, Mode perms) { + return OpenFileFromEntry(path_, {}, perms); +} + VirtualFile RealVfsFilesystem::CreateFile(std::string_view path_, Mode perms) { const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault); - cache.erase(path); + { + std::scoped_lock lk{list_lock}; + cache.erase(path); + } // Current usages of CreateFile expect to delete the contents of an existing file. if (FS::IsFile(path)) { @@ -127,8 +137,11 @@ VirtualFile RealVfsFilesystem::CopyFile(std::string_view old_path_, std::string_ VirtualFile RealVfsFilesystem::MoveFile(std::string_view old_path_, std::string_view new_path_) { const auto old_path = FS::SanitizePath(old_path_, FS::DirectorySeparator::PlatformDefault); const auto new_path = FS::SanitizePath(new_path_, FS::DirectorySeparator::PlatformDefault); - cache.erase(old_path); - cache.erase(new_path); + { + std::scoped_lock lk{list_lock}; + cache.erase(old_path); + cache.erase(new_path); + } if (!FS::RenameFile(old_path, new_path)) { return nullptr; } @@ -137,7 +150,10 @@ VirtualFile RealVfsFilesystem::MoveFile(std::string_view old_path_, std::string_ bool RealVfsFilesystem::DeleteFile(std::string_view path_) { const auto path = FS::SanitizePath(path_, FS::DirectorySeparator::PlatformDefault); - cache.erase(path); + { + std::scoped_lock lk{list_lock}; + cache.erase(path); + } return FS::RemoveFile(path); } @@ -176,14 +192,17 @@ bool RealVfsFilesystem::DeleteDirectory(std::string_view path_) { return FS::RemoveDirRecursively(path); } -void RealVfsFilesystem::RefreshReference(const std::string& path, Mode perms, - FileReference& reference) { +std::unique_lock<std::mutex> RealVfsFilesystem::RefreshReference(const std::string& path, + Mode perms, + FileReference& reference) { + std::unique_lock lk{list_lock}; + // Temporarily remove from list. - this->RemoveReferenceFromList(reference); + this->RemoveReferenceFromListLocked(reference); // Restore file if needed. if (!reference.file) { - this->EvictSingleReference(); + this->EvictSingleReferenceLocked(); reference.file = FS::FileOpen(path, ModeFlagsToFileAccessMode(perms), FS::FileType::BinaryFile); @@ -193,12 +212,16 @@ void RealVfsFilesystem::RefreshReference(const std::string& path, Mode perms, } // Reinsert into list. - this->InsertReferenceIntoList(reference); + this->InsertReferenceIntoListLocked(reference); + + return lk; } void RealVfsFilesystem::DropReference(std::unique_ptr<FileReference>&& reference) { + std::scoped_lock lk{list_lock}; + // Remove from list. - this->RemoveReferenceFromList(*reference); + this->RemoveReferenceFromListLocked(*reference); // Close the file. if (reference->file) { @@ -207,14 +230,14 @@ void RealVfsFilesystem::DropReference(std::unique_ptr<FileReference>&& reference } } -void RealVfsFilesystem::EvictSingleReference() { +void RealVfsFilesystem::EvictSingleReferenceLocked() { if (num_open_files < MaxOpenFiles || open_references.empty()) { return; } // Get and remove from list. auto& reference = open_references.back(); - this->RemoveReferenceFromList(reference); + this->RemoveReferenceFromListLocked(reference); // Close the file. if (reference.file) { @@ -223,10 +246,10 @@ void RealVfsFilesystem::EvictSingleReference() { } // Reinsert into closed list. - this->InsertReferenceIntoList(reference); + this->InsertReferenceIntoListLocked(reference); } -void RealVfsFilesystem::InsertReferenceIntoList(FileReference& reference) { +void RealVfsFilesystem::InsertReferenceIntoListLocked(FileReference& reference) { if (reference.file) { open_references.push_front(reference); } else { @@ -234,7 +257,7 @@ void RealVfsFilesystem::InsertReferenceIntoList(FileReference& reference) { } } -void RealVfsFilesystem::RemoveReferenceFromList(FileReference& reference) { +void RealVfsFilesystem::RemoveReferenceFromListLocked(FileReference& reference) { if (reference.file) { open_references.erase(open_references.iterator_to(reference)); } else { @@ -243,10 +266,10 @@ void RealVfsFilesystem::RemoveReferenceFromList(FileReference& reference) { } RealVfsFile::RealVfsFile(RealVfsFilesystem& base_, std::unique_ptr<FileReference> reference_, - const std::string& path_, Mode perms_) + const std::string& path_, Mode perms_, std::optional<u64> size_) : base(base_), reference(std::move(reference_)), path(path_), parent_path(FS::GetParentPath(path_)), path_components(FS::SplitPathComponents(path_)), - perms(perms_) {} + size(size_), perms(perms_) {} RealVfsFile::~RealVfsFile() { base.DropReference(std::move(reference)); @@ -257,12 +280,15 @@ std::string RealVfsFile::GetName() const { } std::size_t RealVfsFile::GetSize() const { - base.RefreshReference(path, perms, *reference); - return reference->file ? reference->file->GetSize() : 0; + if (size) { + return *size; + } + return FS::GetSize(path); } bool RealVfsFile::Resize(std::size_t new_size) { - base.RefreshReference(path, perms, *reference); + size.reset(); + auto lk = base.RefreshReference(path, perms, *reference); return reference->file ? reference->file->SetSize(new_size) : false; } @@ -279,7 +305,7 @@ bool RealVfsFile::IsReadable() const { } std::size_t RealVfsFile::Read(u8* data, std::size_t length, std::size_t offset) const { - base.RefreshReference(path, perms, *reference); + auto lk = base.RefreshReference(path, perms, *reference); if (!reference->file || !reference->file->Seek(static_cast<s64>(offset))) { return 0; } @@ -287,7 +313,8 @@ std::size_t RealVfsFile::Read(u8* data, std::size_t length, std::size_t offset) } std::size_t RealVfsFile::Write(const u8* data, std::size_t length, std::size_t offset) { - base.RefreshReference(path, perms, *reference); + size.reset(); + auto lk = base.RefreshReference(path, perms, *reference); if (!reference->file || !reference->file->Seek(static_cast<s64>(offset))) { return 0; } @@ -309,10 +336,11 @@ std::vector<VirtualFile> RealVfsDirectory::IterateEntries<RealVfsFile, VfsFile>( std::vector<VirtualFile> out; - const FS::DirEntryCallable callback = [this, &out](const std::filesystem::path& full_path) { - const auto full_path_string = FS::PathToUTF8String(full_path); + const FS::DirEntryCallable callback = [this, + &out](const std::filesystem::directory_entry& entry) { + const auto full_path_string = FS::PathToUTF8String(entry.path()); - out.emplace_back(base.OpenFile(full_path_string, perms)); + out.emplace_back(base.OpenFileFromEntry(full_path_string, entry.file_size(), perms)); return true; }; @@ -330,8 +358,9 @@ std::vector<VirtualDir> RealVfsDirectory::IterateEntries<RealVfsDirectory, VfsDi std::vector<VirtualDir> out; - const FS::DirEntryCallable callback = [this, &out](const std::filesystem::path& full_path) { - const auto full_path_string = FS::PathToUTF8String(full_path); + const FS::DirEntryCallable callback = [this, + &out](const std::filesystem::directory_entry& entry) { + const auto full_path_string = FS::PathToUTF8String(entry.path()); out.emplace_back(base.OpenDirectory(full_path_string, perms)); @@ -483,12 +512,10 @@ std::map<std::string, VfsEntryType, std::less<>> RealVfsDirectory::GetEntries() std::map<std::string, VfsEntryType, std::less<>> out; - const FS::DirEntryCallable callback = [&out](const std::filesystem::path& full_path) { - const auto filename = FS::PathToUTF8String(full_path.filename()); - + const FS::DirEntryCallable callback = [&out](const std::filesystem::directory_entry& entry) { + const auto filename = FS::PathToUTF8String(entry.path().filename()); out.insert_or_assign(filename, - FS::IsDir(full_path) ? VfsEntryType::Directory : VfsEntryType::File); - + entry.is_directory() ? VfsEntryType::Directory : VfsEntryType::File); return true; }; |