rss-tools: vendor/go.etcd.io/bbolt/mlock_unix.go (a5ac52722b131734c74504b6e6f4d9900536cac7)

rss-tools/vendor/go.etcd.io/bbolt/mlock_unix.go (view raw)

Oleksandr Smirnov we're vendoring now, 7 days ago

//go:build !windows

package bbolt

import "golang.org/x/sys/unix"

// mlock locks memory of db file
func mlock(db *DB, fileSize int) error {
	sizeToLock := fileSize
	if sizeToLock > db.datasz {
		// Can't lock more than mmaped slice
		sizeToLock = db.datasz
	}
	if err := unix.Mlock(db.dataref[:sizeToLock]); err != nil {
		return err
	}
	return nil
}

// munlock unlocks memory of db file
func munlock(db *DB, fileSize int) error {
	if db.dataref == nil {
		return nil
	}

	sizeToUnlock := fileSize
	if sizeToUnlock > db.datasz {
		// Can't unlock more than mmaped slice
		sizeToUnlock = db.datasz
	}

	if err := unix.Munlock(db.dataref[:sizeToUnlock]); err != nil {
		return err
	}
	return nil
}

1	//go:build !windows
2
3	package bbolt
4
5	import "golang.org/x/sys/unix"
6
7	// mlock locks memory of db file
8	func mlock(db *DB, fileSize int) error {
9	sizeToLock := fileSize
10	if sizeToLock > db.datasz {
11	// Can't lock more than mmaped slice
12	sizeToLock = db.datasz
13	}
14	if err := unix.Mlock(db.dataref[:sizeToLock]); err != nil {
15	return err
16	}
17	return nil
18	}
19
20	// munlock unlocks memory of db file
21	func munlock(db *DB, fileSize int) error {
22	if db.dataref == nil {
23	return nil
24	}
25
26	sizeToUnlock := fileSize
27	if sizeToUnlock > db.datasz {
28	// Can't unlock more than mmaped slice
29	sizeToUnlock = db.datasz
30	}
31
32	if err := unix.Munlock(db.dataref[:sizeToUnlock]); err != nil {
33	return err
34	}
35	return nil
36	}