You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: worker.go
    path of file: ./repos/go-ethereum/miner
    
    the code of the file until where you have to start completion: // Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package miner

import (
	"errors"
	"fmt"
	"math/big"
	"sync/atomic"
	"time"

	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/consensus/misc/eip1559"
	"github.com/ethereum/go-ethereum/consensus/misc/eip4844"
	"github.com/ethereum/go-ethereum/core"
	"github.com/ethereum/go-ethereum/core/state"
	"github.com/ethereum/go-ethereum/core/txpool"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/core/vm"
	"github.com/ethereum/go-ethereum/log"
	"github.com/ethereum/go-ethereum/params"
	"github.com/holiman/uint256"
)

var (
	errBlockInterruptedByNewHead  = errors.New("new head arrived while building block")
	errBlockInterruptedByRecommit = errors.New("recommit interrupt while building block")
	errBlockInterruptedByTimeout  = errors.New("timeout while building block")
)

// environment is the worker's current environment and holds all
// information of the sealing block generation.
type environment struct {
	signer   types.Signer
	state    *state.StateDB // apply state changes here
	tcount   int          
    
func (miner *Miner) fillTransactions(interrupt *atomic.Int32, env *environment) error {
	miner.confMu.RLock()
	tip := miner.config.GasPrice
	miner.confMu.RUnlock()

	// Retrieve the pending transactions pre-filtered by the 1559/4844 dynamic fees
	filter := txpool.PendingFilter{
		MinTip: uint256.MustFromBig(tip),
	}
	if env.header.BaseFee != nil {
		filter.BaseFee = uint256.MustFromBig(env.header.BaseFee)
	}
	if env.header.ExcessBlobGas != nil {
		filter.BlobFee = uint256.MustFromBig(eip4844.CalcBlobFee(*env.header.ExcessBlobGas))
	}
	filter.OnlyPlainTxs, filter.OnlyBlobTxs = true, false
	pendingPlainTxs := miner.txpool.Pending(filter)

	filter.OnlyPlainTxs, filter.OnlyBlobTxs = false, true
	pendingBlobTxs := miner.txpool.Pending(filter)

	// Split the pending transactions into locals and remotes.
	localPlainTxs, remotePlainTxs := make(map[common.Address][]*txpool.LazyTransaction), pendingPlainTxs
	localBlobTxs, remoteBlobTxs := make(map[common.Address][]*txpool.LazyTransaction), pendingBlobTxs

	for _, account := range miner.txpool.Locals() {
		if txs := remotePlainTxs[account]; len(txs) > 0 {
			delete(remotePlainTxs, account)
			localPlainTxs[account] = txs
		}
		if txs := remoteBlobTxs[account]; len(txs) > 0 {
			delete(remoteBlobTxs, account)
			localBlobTxs[account] = txs
		}
	}
	// Fill the block with all available pending transactions.
	if len(localPlainTxs) > 0 || len(localBlobTxs) > 0 {
		plainTxs := newTransactionsByPriceAndNonce(env.signer, localPlainTxs, env.header.BaseFee)
		blobTxs := newTransactionsByPriceAndNonce(env.signer, localBlobTxs, env.header.BaseFee)

		if err := miner.commitTransactions(env, plainTxs, blobTxs, interrupt); err != nil {
			return err
		}
	}
	if len(remotePlainTxs) > 0 || len(remoteBlobTxs) > 0 {
		plainTxs := newTransactionsByPriceAndNonce(env.signer, remotePlainTxs, env.header.BaseFee)
		blobTxs := newTransactionsByPriceAndNonce(env.signer, remoteBlobTxs, env.header.BaseFee)

		if err := miner.commitTransactions(env, plainTxs, blobTxs, interrupt); err != nil {
			return err
		}
	}
	return nil
}