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vfs_real: misc optimizations

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This commit is contained in:
Liam
2023-06-16 15:12:46 -04:00
parent 4112031c81
commit 734242c5bc
4 changed files with 41 additions and 24 deletions
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44
src/core/file_sys/vfs_real.cpp
View File

@@ -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
@@ -72,7 +73,8 @@ 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);
if (auto it = cache.find(path); it != cache.end()) {
@@ -81,20 +83,24 @@ 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);
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);
@@ -243,10 +249,10 @@ 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));
@@ -257,8 +263,10 @@ 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) {
@@ -309,10 +317,11 @@ 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 +339,9 @@ 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 +493,10 @@ 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;
};

11
src/core/file_sys/vfs_real.h
View File

@@ -4,6 +4,7 @@
#pragma once
#include <map>
#include <optional>
#include <string_view>
#include "common/intrusive_list.h"
#include "core/file_sys/mode.h"
@@ -20,6 +21,8 @@ struct FileReference : public Common::IntrusiveListBaseNode<FileReference> {
};
class RealVfsFile;
class RealVfsDirectory;
class RealVfsFilesystem : public VfsFilesystem {
public:
RealVfsFilesystem();
@@ -56,6 +59,11 @@ private:
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);
};
// An implementation of VfsFile that represents a file on the user's computer.
@@ -78,13 +86,14 @@ public:
private:
RealVfsFile(RealVfsFilesystem& base, std::unique_ptr<FileReference> reference,
const std::string& path, Mode perms = Mode::Read);
const std::string& path, Mode perms = Mode::Read, std::optional<u64> size = {});
RealVfsFilesystem& base;
std::unique_ptr<FileReference> reference;
std::string path;
std::string parent_path;
std::vector<std::string> path_components;
std::optional<u64> size;
Mode perms;
};