git_一些备注

core/state_processor.go

@@ -59,7 +59,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 		usedGas  = new(uint64)
 		header   = block.Header()
 		allLogs  []*types.Log
-		gp       = new(GasPool).AddGas(block.GasLimit())
+		gp       = new(GasPool).AddGas(block.GasLimit()) //gaspool初始值均为0，通过block_gaslimit完成初始化
 	)
 	// Mutate the the block and state according to any hard-fork specs
 	if p.config.DAOForkSupport && p.config.DAOForkBlock != nil && p.config.DAOForkBlock.Cmp(block.Number()) == 0 {
@@ -90,13 +90,14 @@ func ApplyTransaction(config *params.ChainConfig, bc *BlockChain, author *common
 	if err != nil {
 		return nil, 0, err
 	}
+
 	// Create a new context to be used in the EVM environment
 	context := NewEVMContext(msg, header, bc, author)
 	// Create a new environment which holds all relevant information
 	// about the transaction and calling mechanisms.
-	vmenv := vm.NewEVM(context, statedb, config, cfg)
+	vmenv := vm.NewEVM(context, statedb, config, cfg) // core/evm.go 包括interpretor的建立
 	// Apply the transaction to the current state (included in the env)
-	_, gas, failed, err := ApplyMessage(vmenv, msg, gp)
+	_, gas, failed, err := ApplyMessage(vmenv, msg, gp) //TransitionDb() 执行交易 transition state
 	if err != nil {
 		return nil, 0, err
 	}
@@ -107,7 +108,7 @@ func ApplyTransaction(config *params.ChainConfig, bc *BlockChain, author *common
 	} else {
 		root = statedb.IntermediateRoot(config.IsEIP158(header.Number)).Bytes()
 	}
-	*usedGas += gas
+	*usedGas += gas //将单笔交易的gas累计
 
 	// Create a new receipt for the transaction, storing the intermediate root and gas used by the tx
 	// based on the eip phase, we're passing wether the root touch-delete accounts.

core/vm/evm.go

@@ -320,7 +320,7 @@ func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.I
 	if evm.depth > int(params.CallCreateDepth) {
 		return nil, common.Address{}, gas, ErrDepth
 	}
-	if !evm.CanTransfer(evm.StateDB, caller.Address(), value) {
+	if !evm.CanTransfer(evm.StateDB, caller.Address(), value) { //检测账户余额
 		return nil, common.Address{}, gas, ErrInsufficientBalance
 	}
 	// Ensure there's no existing contract already at the designated address
@@ -334,12 +334,14 @@ func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.I
 	}
 	// Create a new account on the state
 	snapshot := evm.StateDB.Snapshot()
-	evm.StateDB.CreateAccount(contractAddr)
+	evm.StateDB.CreateAccount(contractAddr) //合约账户
 	if evm.ChainConfig().IsEIP158(evm.BlockNumber) {
 		evm.StateDB.SetNonce(contractAddr, 1)
 	}
 	evm.Transfer(evm.StateDB, caller.Address(), contractAddr, value)
-
+	//向合约账户转账，但transfer（）具体实现未找到
+	// 还有一个core/evm.go 包含静态方法
+	//value即为amount
 	// initialise a new contract and set the code that is to be used by the
 	// E The contract is a scoped evmironment for this execution context
 	// only.
@@ -351,11 +353,11 @@ func (evm *EVM) Create(caller ContractRef, code []byte, gas uint64, value *big.I
 	}
 
 	if evm.vmConfig.Debug && evm.depth == 0 {
-		evm.vmConfig.Tracer.CaptureStart(caller.Address(), contractAddr, true, code, gas, value)
+		evm.vmConfig.Tracer.CaptureStart(caller.Address(), contractAddr, true, code, gas, value) // contract.code为caller.Address？
 	}
 	start := time.Now()
 
-	ret, err = run(evm, contract, nil)
+	ret, err = run(evm, contract, nil) //开始执行code
 
 	// check whether the max code size has been exceeded
 	maxCodeSizeExceeded := evm.ChainConfig().IsEIP158(evm.BlockNumber) && len(ret) > params.MaxCodeSize

internal/ethapi/api.go

@@ -1087,7 +1087,7 @@ func (s *PublicTransactionPoolAPI) sign(addr common.Address, tx *types.Transacti
 	// Look up the wallet containing the requested signer
 	account := accounts.Account{Address: addr}
 
-	wallet, err := s.b.AccountManager().Find(account)
+	wallet, err := s.b.AccountManager().Find(account) //manage.go  Find attempts to locate the wallet corresponding to a specific account
 	if err != nil {
 		return nil, err
 	}
@@ -1193,7 +1193,7 @@ func (s *PublicTransactionPoolAPI) SendTransaction(ctx context.Context, args Sen
 	// Look up the wallet containing the requested signer
 	account := accounts.Account{Address: args.From}
 
-	wallet, err := s.b.AccountManager().Find(account)
+	wallet, err := s.b.AccountManager().Find(account)  // accounts/manage.go Find attempts to locate the wallet corresponding to a specific account
 	if err != nil {
 		return common.Hash{}, err
 	}
@@ -1201,7 +1201,7 @@ func (s *PublicTransactionPoolAPI) SendTransaction(ctx context.Context, args Sen
 	if args.Nonce == nil {
 		// Hold the addresse's mutex around signing to prevent concurrent assignment of
 		// the same nonce to multiple accounts.
-		s.nonceLock.LockAddr(args.From)
+		s.nonceLock.LockAddr(args.From)  
 		defer s.nonceLock.UnlockAddr(args.From)
 	}
 
@@ -1213,11 +1213,10 @@ func (s *PublicTransactionPoolAPI) SendTransaction(ctx context.Context, args Sen
 	tx := args.toTransaction()
 
 	var chainID *big.Int
-	if config := s.b.ChainConfig(); config.IsEIP155(s.b.CurrentBlock().Number()) {
+	if config := s.b.ChainConfig(); config.IsEIP155(s.b.CurrentBlock().Number()) {  // param/config.go  type/Block.go
-		chainID = config.ChainId
+		chainID = config.ChainId  //Choose fork
 	}
-	signed, err := wallet.SignTx(account, tx, chainID)
+	signed, err := wallet.SignTx(account, tx, chainID)  // accounts/acount.go wallet.go
-	if err != nil {
 		return common.Hash{}, err
 	}
 	return submitTransaction(ctx, s.b, signed)
@@ -1267,6 +1266,8 @@ type SignTransactionResult struct {
 // SignTransaction will sign the given transaction with the from account.
 // The node needs to have the private key of the account corresponding with
 // the given from address and it needs to be unlocked.
+
+//对发送来的交易进行签名
 func (s *PublicTransactionPoolAPI) SignTransaction(ctx context.Context, args SendTxArgs) (*SignTransactionResult, error) {
 	if args.Gas == nil {
 		return nil, fmt.Errorf("gas not specified")