cache

package

v0.0.20 Latest Latest Go to latest Published: Mar 16, 2025 License: Apache-2.0 Imports: 8 Imported by: 0

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/quant1x/x

Documentation ¶

Rendered for

Overview ¶

mmap_common.go

Index ¶

Constants
Variables
type Cache
- func OpenCache[E any](name string) (*Cache[E], error)
type MemObject
type Pool
- func (p *Pool[E]) Acquire() *E
- func (p *Pool[E]) Release(obj *E)

Constants ¶

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const (
	DefaultSize = 1 << 20 // 1MB
	THRESHOLD   = 0.8     // 80%使用率触发扩容
)

Variables ¶

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var (
	ErrInvalidFile   = fmt.Errorf("invalid cache file")
	ErrInvalidAccess = fmt.Errorf("invalid memory access")
	ErrChecksum      = fmt.Errorf("data checksum mismatch")
	ErrOutOfSpace    = fmt.Errorf("out of space")
)

Functions ¶

This section is empty.

Types ¶

type Cache ¶ added in v0.0.11

type Cache[E any] struct {
	// contains filtered or unexported fields
}

Cache 使用内存映射的跨进程安全缓存

func OpenCache ¶ added in v0.0.11

func OpenCache[E any](name string) (*Cache[E], error)

OpenCache 创建或打开内存映射缓存

func (*Cache[E]) Add ¶ added in v0.0.11

func (c *Cache[E]) Add(delta int) error

func (*Cache[E]) Close ¶ added in v0.0.11

func (c *Cache[E]) Close() error

Close 安全关闭

func (*Cache[E]) ToSlice ¶ added in v0.0.12

func (c *Cache[E]) ToSlice() ([]E, error)

ToSlice 安全转换为类型切片

func (*Cache[E]) WriteData ¶ added in v0.0.11

func (c *Cache[E]) WriteData(offset uint32, src []byte) error

WriteData 类型安全写入

type MemObject ¶ added in v0.0.11

type MemObject interface {
	Flush() error
	Unmap() error
	Bytes() []byte
}

MemObject 封装内存映射操作接口

type Pool ¶

type Pool[E any] struct {
	// contains filtered or unexported fields
}

Pool 是一个泛型化的 sync.Pool 封装，用于缓存和复用对象。对象在释放回池时会被重置为零值。

func (*Pool[E]) Acquire ¶

func (p *Pool[E]) Acquire() *E

Acquire 从池中获取一个对象。如果池为空则创建新对象。返回的对象会被重置为零值（通过 Release 时的重置保证）。

func (*Pool[E]) Release ¶

func (p *Pool[E]) Release(obj *E)

Release 将对象放回池中。如果对象为 nil 则直接返回。放回前会将对象重置为零值以保证下次获取时的状态。

Source Files ¶

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