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vfs_real: lock concurrent accesses

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This commit is contained in:
Liam
2023-06-22 22:05:08 -04:00
parent 2fc5dedf69
commit 1dd166f766
2 changed files with 45 additions and 25 deletions
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15
src/core/file_sys/vfs_real.h
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@ -4,6 +4,7 @@
#pragma once
#include <map>
#include <mutex>
#include <optional>
#include <string_view>
#include "common/intrusive_list.h"
@ -48,22 +49,24 @@ private:
std::map<std::string, std::weak_ptr<VfsFile>, std::less<>> cache;
ReferenceListType open_references;
ReferenceListType closed_references;
std::mutex list_lock;
size_t num_open_files{};
private:
friend class RealVfsFile;
void RefreshReference(const std::string& path, Mode perms, FileReference& reference);
std::unique_lock<std::mutex> RefreshReference(const std::string& path, Mode perms,
FileReference& reference);
void DropReference(std::unique_ptr<FileReference>&& reference);
void EvictSingleReference();
private:
void InsertReferenceIntoList(FileReference& reference);
void RemoveReferenceFromList(FileReference& reference);
private:
friend class RealVfsDirectory;
VirtualFile OpenFileFromEntry(std::string_view path, std::optional<u64> size,
Mode perms = Mode::Read);
private:
void EvictSingleReferenceLocked();
void InsertReferenceIntoListLocked(FileReference& reference);
void RemoveReferenceFromListLocked(FileReference& reference);
};
// An implementation of VfsFile that represents a file on the user's computer.