346     size_t result_size = 0;  in GetChildrenFileAttributes()
347     for (size_t i = 0; i < child_fnames.size(); ++i) {  in GetChildrenFileAttributes()
371   virtual IOStatus Truncate(const std::string& /*fname*/, size_t /*size*/,  in Truncate()  argument
546   virtual IOStatus Read(size_t n, const IOOptions& options, Slice* result,
564   virtual size_t GetRequiredBufferAlignment() const { return kDefaultPageSize; }  in GetRequiredBufferAlignment()
569   virtual IOStatus InvalidateCache(size_t /*offset*/, size_t /*length*/) {  in InvalidateCache()  argument
575   virtual IOStatus PositionedRead(uint64_t /*offset*/, size_t /*n*/,  in PositionedRead()  argument
592   size_t len;
623   virtual IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,
628   virtual IOStatus Prefetch(uint64_t /*offset*/, size_t /*n*/,  in Prefetch()  argument
641   virtual IOStatus MultiRead(FSReadRequest* reqs, size_t num_reqs,  in MultiRead()
644     for (size_t i = 0; i < num_reqs; ++i) {  in MultiRead()
667   virtual size_t GetUniqueId(char* /*id*/, size_t /*max_size*/) const {  in GetUniqueId()  argument
682   virtual size_t GetRequiredBufferAlignment() const { return kDefaultPageSize; }  in GetRequiredBufferAlignment()
687   virtual IOStatus InvalidateCache(size_t /*offset*/, size_t /*length*/) {  in InvalidateCache()  argument
782   virtual size_t GetRequiredBufferAlignment() const { return kDefaultPageSize; }  in GetRequiredBufferAlignment()
807   virtual void SetPreallocationBlockSize(size_t size) {  in SetPreallocationBlockSize()
811   virtual void GetPreallocationStatus(size_t* block_size,  in GetPreallocationStatus()
812                                       size_t* last_allocated_block) {  in GetPreallocationStatus()
818   virtual size_t GetUniqueId(char* /*id*/, size_t /*max_size*/) const {  in GetUniqueId()  argument
826   virtual IOStatus InvalidateCache(size_t /*offset*/, size_t /*length*/) {  in InvalidateCache()  argument
849   virtual void PrepareWrite(size_t offset, size_t len, const IOOptions& options,  in PrepareWrite()
858     size_t new_last_preallocated_block =  in PrepareWrite()
861       size_t num_spanned_blocks =  in PrepareWrite()
880   size_t preallocation_block_size() { return preallocation_block_size_; }  in preallocation_block_size()
883   size_t last_preallocated_block_;
884   size_t preallocation_block_size_;
908   virtual size_t GetRequiredBufferAlignment() const { return kDefaultPageSize; }  in GetRequiredBufferAlignment()
918   virtual IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,
944   FSMemoryMappedFileBuffer(void* _base, size_t _length)  in FSMemoryMappedFileBuffer()
955   size_t GetLen() const { return length_; }  in GetLen()
959   const size_t length_;
970   virtual size_t GetUniqueId(char* /*id*/, size_t /*max_size*/) const {  in GetUniqueId()  argument
1086   IOStatus Truncate(const std::string& fname, size_t size,  in Truncate()
1206   IOStatus Read(size_t n, const IOOptions& options, Slice* result,  in Read()
1212   size_t GetRequiredBufferAlignment() const override {  in GetRequiredBufferAlignment()
1215   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
1218   IOStatus PositionedRead(uint64_t offset, size_t n, const IOOptions& options,  in PositionedRead()
1233   IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,  in Read()
1238   IOStatus MultiRead(FSReadRequest* reqs, size_t num_reqs,  in MultiRead()
1242   IOStatus Prefetch(uint64_t offset, size_t n, const IOOptions& options,  in Prefetch()
1246   size_t GetUniqueId(char* id, size_t max_size) const override {  in GetUniqueId()
1251   size_t GetRequiredBufferAlignment() const override {  in GetRequiredBufferAlignment()
1254   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
1295   size_t GetRequiredBufferAlignment() const override {  in GetRequiredBufferAlignment()
1311   void SetPreallocationBlockSize(size_t size) override {  in SetPreallocationBlockSize()
1315   void GetPreallocationStatus(size_t* block_size,  in GetPreallocationStatus()
1316                               size_t* last_allocated_block) override {  in GetPreallocationStatus()
1320   size_t GetUniqueId(char* id, size_t max_size) const override {  in GetUniqueId()
1324   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
1333   void PrepareWrite(size_t offset, size_t len, const IOOptions& options,  in PrepareWrite()
1352   size_t GetRequiredBufferAlignment() const override {  in GetRequiredBufferAlignment()
1359   IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,  in Read()
1388   size_t GetUniqueId(char* id, size_t max_size) const override {  in GetUniqueId()