fhcache

Documentation

Index

• type FileHandleCache
  • func New(ctx context.Context, cfg *config.Config, metrics *cgm.CirconusMetrics) (*FileHandleCache, error)
  • func (fhc *FileHandleCache) PrefaultPage(ioCacheKey structs.IOCacheKey) error
  • func (fhc *FileHandleCache) Purge()

Types

type FileHandleCache

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

FileHandleCache is a file descriptor cache to prevent re-open(2)'ing files continually.

func New

func New(ctx context.Context, cfg *config.Config, metrics *cgm.CirconusMetrics) (*FileHandleCache, error)

New creates a new FileHandleCache

func (*FileHandleCache) PrefaultPage

func (fhc *FileHandleCache) PrefaultPage(ioCacheKey structs.IOCacheKey) error

PrefaultPage uses the given IOCacheKey to:

1) open a relation's segment, if necessary 2) pre-fault a given heap page into the OS's filesystem cache using pread(2)

func (*FileHandleCache) Purge

func (fhc *FileHandleCache) Purge()

Purge purges the FileHandleCache of its cache (and all downstream caches)