github.com/fibonacci-chain/fbc@v0.0.0-20231124064014-c7636198c1e9/libs/cosmos-sdk/store/mpt/params.go (about)

     1  package mpt
     2  
     3  import (
     4  	ethcmn "github.com/ethereum/go-ethereum/common"
     5  	ethtypes "github.com/ethereum/go-ethereum/core/types"
     6  	"github.com/ethereum/go-ethereum/crypto"
     7  	"github.com/fibonacci-chain/fbc/libs/cosmos-sdk/types"
     8  )
     9  
    10  const (
    11  	StoreTypeMPT = types.StoreTypeMPT
    12  
    13  	TriesInMemory = 100
    14  
    15  	// StoreKey is string representation of the store key for mpt
    16  	StoreKey = "mpt"
    17  )
    18  
    19  const (
    20  	FlagTrieWriteAhead    = "trie.write-ahead"
    21  	FlagTrieDirtyDisabled = "trie.dirty-disabled"
    22  	FlagTrieCacheSize     = "trie.cache-size"
    23  	FlagTrieNodesLimit    = "trie.nodes-limit"
    24  	FlagTrieImgsLimit     = "trie.imgs-limit"
    25  )
    26  
    27  var (
    28  	TrieWriteAhead          = false
    29  	TrieDirtyDisabled       = false
    30  	TrieCacheSize     uint  = 2048 // MB
    31  	TrieNodesLimit    uint  = 256  // MB
    32  	TrieImgsLimit     uint  = 4    // MB
    33  	TrieCommitGap     int64 = 100
    34  )
    35  
    36  var (
    37  	KeyPrefixAccRootMptHash        = []byte{0x11}
    38  	KeyPrefixAccLatestStoredHeight = []byte{0x12}
    39  	KeyPrefixEvmRootMptHash        = []byte{0x13}
    40  	KeyPrefixEvmLatestStoredHeight = []byte{0x14}
    41  
    42  	GAccToPrefetchChannel    = make(chan [][]byte, 2000)
    43  	GAccTryUpdateTrieChannel = make(chan struct{})
    44  	GAccTrieUpdatedChannel   = make(chan struct{})
    45  )
    46  
    47  var (
    48  	NilHash = ethcmn.Hash{}
    49  
    50  	// EmptyCodeHash is the known hash of an empty code.
    51  	EmptyCodeHash      = crypto.Keccak256Hash(nil)
    52  	EmptyCodeHashBytes = crypto.Keccak256(nil)
    53  
    54  	// EmptyRootHash is the known root hash of an empty trie.
    55  	EmptyRootHash      = ethtypes.EmptyRootHash
    56  	EmptyRootHashBytes = EmptyRootHash.Bytes()
    57  )