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//go:build !windows
// +build !windows
package bbolt_test
import (
"fmt"
"testing"
"golang.org/x/sys/unix"
bolt "go.etcd.io/bbolt"
"go.etcd.io/bbolt/internal/btesting"
)
func TestMlock_DbOpen(t *testing.T) {
// 32KB
skipOnMemlockLimitBelow(t, 32*1024)
btesting.MustCreateDBWithOption(t, &bolt.Options{Mlock: true})
}
// Test change between "empty" (16KB) and "non-empty" db
func TestMlock_DbCanGrow_Small(t *testing.T) {
// 32KB
skipOnMemlockLimitBelow(t, 32*1024)
db := btesting.MustCreateDBWithOption(t, &bolt.Options{Mlock: true})
if err := db.Update(func(tx *bolt.Tx) error {
b, err := tx.CreateBucketIfNotExists([]byte("bucket"))
if err != nil {
t.Fatal(err)
}
key := []byte("key")
value := []byte("value")
if err := b.Put(key, value); err != nil {
t.Fatal(err)
}
return nil
}); err != nil {
t.Fatal(err)
}
}
// Test crossing of 16MB (AllocSize) of db size
func TestMlock_DbCanGrow_Big(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode")
}
// 32MB
skipOnMemlockLimitBelow(t, 32*1024*1024)
chunksBefore := 64
chunksAfter := 64
db := btesting.MustCreateDBWithOption(t, &bolt.Options{Mlock: true})
for chunk := 0; chunk < chunksBefore; chunk++ {
insertChunk(t, db, chunk)
}
dbSize := fileSize(db.Path())
for chunk := 0; chunk < chunksAfter; chunk++ {
insertChunk(t, db, chunksBefore+chunk)
}
newDbSize := fileSize(db.Path())
if newDbSize <= dbSize {
t.Errorf("db didn't grow: %v <= %v", newDbSize, dbSize)
}
}
func insertChunk(t *testing.T, db *btesting.DB, chunkId int) {
chunkSize := 1024
if err := db.Update(func(tx *bolt.Tx) error {
b, err := tx.CreateBucketIfNotExists([]byte("bucket"))
if err != nil {
t.Fatal(err)
}
for i := 0; i < chunkSize; i++ {
key := []byte(fmt.Sprintf("key-%d-%d", chunkId, i))
value := []byte("value")
if err := b.Put(key, value); err != nil {
t.Fatal(err)
}
}
return nil
}); err != nil {
t.Fatal(err)
}
}
// Main reason for this check is travis limiting mlockable memory to 64KB
// https://github.com/travis-ci/travis-ci/issues/2462
func skipOnMemlockLimitBelow(t *testing.T, memlockLimitRequest uint64) {
var info unix.Rlimit
if err := unix.Getrlimit(unix.RLIMIT_MEMLOCK, &info); err != nil {
t.Fatal(err)
}
if info.Cur < memlockLimitRequest {
t.Skipf(
"skipping as RLIMIT_MEMLOCK is insufficient: %v < %v",
info.Cur,
memlockLimitRequest,
)
}
}
|
