awol

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v0.0.0-...-cd2353e Latest Latest Go to latest Published: Apr 27, 2021 License: MIT Imports: 3 Imported by: 0

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const MaxTxnWrites uint64 = 10 // 10 is completely arbitrary

MaxTxnWrites is a guaranteed reservation for each transaction.

This section is empty.

This section is empty.

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

func New() Log

New initializes a fresh log

func Open() Log

Open recovers the log following a crash or shutdown

func (l Log) Apply()

Apply all the committed transactions.

Frees all the space in the log.

func (l Log) BeginTxn() bool

BeginTxn allocates space for a new transaction in the log.

Returns true if the allocation succeeded.

func (l Log) Commit()

Commit the current transaction.

func (l Log) Read(a uint64) disk.Block

Read from the logical disk.

Reads must go through the log to return committed but un-applied writes.

func (l Log) Size() uint64

func (l Log) Write(a uint64, v disk.Block)

Write to the disk through the log.