37 lines
697 B
Go
37 lines
697 B
Go
// +build !windows
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package bbolt
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import "golang.org/x/sys/unix"
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// mlock locks memory of db file
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func mlock(db *DB, fileSize int) error {
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sizeToLock := fileSize
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if sizeToLock > db.datasz {
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// Can't lock more than mmaped slice
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sizeToLock = db.datasz
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}
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if err := unix.Mlock(db.dataref[:sizeToLock]); err != nil {
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return err
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}
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return nil
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}
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//munlock unlocks memory of db file
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func munlock(db *DB, fileSize int) error {
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if db.dataref == nil {
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return nil
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}
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sizeToUnlock := fileSize
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if sizeToUnlock > db.datasz {
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// Can't unlock more than mmaped slice
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sizeToUnlock = db.datasz
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}
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if err := unix.Munlock(db.dataref[:sizeToUnlock]); err != nil {
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return err
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}
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return nil
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}
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