handlemap

package

v1.1.3 Latest Latest Go to latest Published: Apr 11, 2024 License: MIT Imports: 7 Imported by: 0

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Repository

github.com/Seagate/cloudfuse

Links

Open Source Insights

Documentation ¶

Index ¶

Constants
func CreateCacheObject(capacity int64, handle *Handle)
func Delete(key HandleID)
func GetHandles() *sync.Map
type Buffers
type Cache
type Handle
type HandleID
- func Add(handle *Handle) HandleID

Constants ¶

View Source

const (
	HandleFlagUnknown uint16 = iota
	HandleFlagDirty          // File has been modified with write operation or is a new file
	HandleFlagFSynced        // User has called fsync on the file explicitly
	HandleFlagCached         // File is cached in the local system by cloudfuse
)

Flags represented in BitMap for various flags in the handle

Variables ¶

This section is empty.

Functions ¶

func CreateCacheObject ¶

func CreateCacheObject(capacity int64, handle *Handle)

func Delete ¶

func Delete(key HandleID)

Delete : Remove handle object from map

func GetHandles ¶

func GetHandles() *sync.Map

GetHandles : Get map of handles stored

Types ¶

type Buffers ¶

type Buffers struct {
	Cooked  *list.List
	Cooking *list.List
}

type Cache ¶

type Cache struct {
	sync.RWMutex
	*cache_policy.LRUCache
	*common.BlockOffsetList
	StreamOnly  bool
	HandleCount int64
}

Structure to hold in memory cache for streaming layer

type Handle ¶

type Handle struct {
	sync.RWMutex
	FObj     *os.File // File object being represented by this handle
	CacheObj *Cache   // Streaming layer cache for this handle
	Buffers  *Buffers
	ID       HandleID // Cloudfuse assigned unique ID to this handle
	Size     int64    // Size of the file being handled here
	Mtime    time.Time
	UnixFD   uint64          // Unix FD created by create/open syscall
	OptCnt   uint64          // Number of operations done on this file
	Flags    common.BitMap16 // Various states of the file
	Path     string          // Always holds path relative to mount dir
	// contains filtered or unexported fields
}

func Load ¶

func Load(key HandleID) (*Handle, bool)

Load : Search the handle object based on its id

func NewHandle ¶

func NewHandle(path string) *Handle

func Store ¶

func Store(key HandleID, path string, _ uintptr) *Handle

Store function must not be used in production application. This is a utility function present only for test scenarios.

func (*Handle) Cached ¶

func (handle *Handle) Cached() bool

Cached : File is cached on local disk or not

func (*Handle) Cleanup ¶

func (handle *Handle) Cleanup()

Cleanup : Delete all user defined parameter from handle

func (*Handle) Dirty ¶

func (handle *Handle) Dirty() bool

Dirty : Handle is dirty or not

func (*Handle) FD ¶

func (handle *Handle) FD() int

FD : Get Unix file descriptor

func (*Handle) Fsynced ¶

func (handle *Handle) Fsynced() bool

Fsynced : Handle is Fsynced or not

func (*Handle) GetFileObject ¶

func (handle *Handle) GetFileObject() *os.File

GetFileObject : Get the OS.File handle stored within

func (*Handle) GetValue ¶

func (handle *Handle) GetValue(key string) (interface{}, bool)

GetValue : Retrieve user defined parameter from handle

func (*Handle) RemoveValue ¶

func (handle *Handle) RemoveValue(key string) (interface{}, bool)

GetValue : Retrieve user defined parameter from handle

func (*Handle) SetFileObject ¶

func (handle *Handle) SetFileObject(f *os.File)

SetFileObject : Store the OS.File handle

func (*Handle) SetValue ¶

func (handle *Handle) SetValue(key string, value interface{})

SetValue : Store user defined parameter inside handle

type HandleID ¶

type HandleID uint64

const InvalidHandleID HandleID = 0

func Add ¶

func Add(handle *Handle) HandleID

Add : Add the newly created handle to map and allocate a handle id

Source Files ¶

View all Source files

handle_map.go

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