cache

package

v0.12.0 Latest Latest Go to latest Published: Sep 28, 2021 License: Apache-2.0 Imports: 8 Imported by: 0

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Repository

github.com/Ptt-official-app/go-bbs

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Documentation ¶

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Index ¶

Constants
func RemoveKey(key int) error
func RemoveMmap(filePath string) error
func Shmat(shmid int, shmaddr uintptr, shmflg int) (uintptr, error)
func Shmctl(shmid int, cmd int, buf *ShmidDs) (int, error)
func Shmdt(shmaddr uintptr) (int, error)
func Shmget(key int, size int, flag int) (int, error)
type Cache
- func NewCache(connectionString string) (Cache, error)
type Mmap
- func CreateMmap(filePath string, size int64) (*Mmap, error)
- func OpenMmap(filePath string) (*Mmap, error)
- func (m *Mmap) Bytes() []byte
- func (m *Mmap) Close() error
type SHM
- func CreateKey(key int, size int) (*SHM, error)
- func OpenKey(key int) (*SHM, error)
- func (s *SHM) Bytes() []byte
- func (s *SHM) Close() error
type ShmidDs

Constants ¶

View Source

const (
	IPCCreate = 00001000

	IPCRMID = 0
	IPCSet  = 1
	IPCStat = 2
)

Variables ¶

This section is empty.

Functions ¶

func RemoveKey ¶

func RemoveKey(key int) error

func RemoveMmap ¶

func RemoveMmap(filePath string) error

func Shmat ¶

func Shmat(shmid int, shmaddr uintptr, shmflg int) (uintptr, error)

shmat: map/unmap shared memory, plase see man 2 shmat. golang gc won't affect on this.

func Shmctl ¶

func Shmctl(shmid int, cmd int, buf *ShmidDs) (int, error)

shmctl: shared memory control operations

func Shmdt ¶

func Shmdt(shmaddr uintptr) (int, error)

shmdt: map/unmap shared memory, plase see man 2 shmdt.

func Shmget ¶

func Shmget(key int, size int, flag int) (int, error)

shmget: get shared memort area identifier, please see man 2 shmget

Types ¶

type Cache ¶

type Cache interface {
	Bytes() []byte
	Close() error
}

func NewCache ¶

func NewCache(connectionString string) (Cache, error)

NewCache returns Cache (SHM) by connectionString, connectionString indicate the shm location with uri format eg. shmkey:1228 or file:/tmp/ramdisk/bbs.shm

type Mmap ¶

type Mmap struct {
	// contains filtered or unexported fields
}

func CreateMmap ¶

func CreateMmap(filePath string, size int64) (*Mmap, error)

func OpenMmap ¶

func OpenMmap(filePath string) (*Mmap, error)

func (*Mmap) Bytes ¶

func (m *Mmap) Bytes() []byte

func (*Mmap) Close ¶

func (m *Mmap) Close() error

type SHM ¶

type SHM struct {
	// contains filtered or unexported fields
}

func CreateKey ¶

func CreateKey(key int, size int) (*SHM, error)

func OpenKey ¶

func OpenKey(key int) (*SHM, error)

OpenKey open a shm which is already exists.

func (*SHM) Bytes ¶

func (s *SHM) Bytes() []byte

func (*SHM) Close ¶

func (s *SHM) Close() error

type ShmidDs ¶

type ShmidDs struct {
	ShmSegsz sizeT

	ShmCpid    int32
	ShmLpid    int32
	ShmNattach shmattT
	// contains filtered or unexported fields
}

Source Files ¶

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