mirror of
https://github.com/nspcc-dev/neo-go.git
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9a06995460
Turns out, it's almost always allocating because we're mostly dealing with small integers while the buffer size is calculated in 8-byte chunks here, so preallocated buffer is always insufficient. name old time/op new time/op delta ToPreallocatedBytes-8 28.5ns ± 7% 19.7ns ± 5% -30.72% (p=0.000 n=10+10) name old alloc/op new alloc/op delta ToPreallocatedBytes-8 16.0B ± 0% 0.0B -100.00% (p=0.000 n=10+10) name old allocs/op new allocs/op delta ToPreallocatedBytes-8 1.00 ± 0% 0.00 -100.00% (p=0.000 n=10+10) Fix StorageItem reuse at the same time. We don't copy when getting values from the storage, but we don when we're putting them, so buffer reuse could corrupt old values.
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package native
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import (
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"encoding/hex"
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"fmt"
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"math/big"
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"github.com/nspcc-dev/neo-go/pkg/core/dao"
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"github.com/nspcc-dev/neo-go/pkg/core/storage"
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"github.com/nspcc-dev/neo-go/pkg/encoding/bigint"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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var intOne = big.NewInt(1)
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var intTwo = big.NewInt(2)
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func getConvertibleFromDAO(id int32, d *dao.Simple, key []byte, conv stackitem.Convertible) error {
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si := d.GetStorageItem(id, key)
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if si == nil {
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return storage.ErrKeyNotFound
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}
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return stackitem.DeserializeConvertible(si, conv)
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}
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func putConvertibleToDAO(id int32, d *dao.Simple, key []byte, conv stackitem.Convertible) error {
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item, err := conv.ToStackItem()
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if err != nil {
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return err
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}
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data, err := d.GetItemCtx().Serialize(item, false)
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if err != nil {
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return err
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}
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d.PutStorageItem(id, key, data)
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return nil
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}
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func setIntWithKey(id int32, dao *dao.Simple, key []byte, value int64) {
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dao.PutBigInt(id, key, big.NewInt(value))
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}
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func getIntWithKey(id int32, dao *dao.Simple, key []byte) int64 {
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si := dao.GetStorageItem(id, key)
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if si == nil {
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panic(fmt.Errorf("item with id = %d and key = %s is not initialized", id, hex.EncodeToString(key)))
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}
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return bigint.FromBytes(si).Int64()
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}
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// makeUint160Key creates a key from the account script hash.
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func makeUint160Key(prefix byte, h util.Uint160) []byte {
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k := make([]byte, util.Uint160Size+1)
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k[0] = prefix
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copy(k[1:], h.BytesBE())
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return k
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}
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func toString(item stackitem.Item) string {
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s, err := stackitem.ToString(item)
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if err != nil {
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panic(err)
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}
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return s
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}
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