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environment.go
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environment.go
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package meer
import (
qcommon "github.com/Qitmeer/qng/meerevm/common"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
)
type environment struct {
signer types.Signer
state *state.StateDB // apply state changes here
tcount int // tx count in cycle
gasPool *core.GasPool // available gas used to pack transactions
coinbase common.Address
header *types.Header
txs []*types.Transaction
receipts []*types.Receipt
sidecars []*types.BlobTxSidecar
blobs int
}
// copy creates a deep copy of environment.
func (env *environment) copy() *environment {
cpy := &environment{
signer: env.signer,
state: env.state.Copy(),
tcount: env.tcount,
coinbase: env.coinbase,
header: types.CopyHeader(env.header),
receipts: qcommon.CopyReceipts(env.receipts),
}
if env.gasPool != nil {
gasPool := *env.gasPool
cpy.gasPool = &gasPool
}
cpy.txs = make([]*types.Transaction, len(env.txs))
copy(cpy.txs, env.txs)
cpy.sidecars = make([]*types.BlobTxSidecar, len(env.sidecars))
copy(cpy.sidecars, env.sidecars)
return cpy
}
// discard terminates the background prefetcher go-routine. It should
// always be called for all created environment instances otherwise
// the go-routine leak can happen.
func (env *environment) discard() {
if env.state == nil {
return
}
env.state.StopPrefetcher()
}