C++ std::线程引发未处理的异常:访问冲突读取位置
我正在尝试在我的简单服务器项目中使用多线程。它在我的笔记本电脑上运行良好,但当我将项目文件夹移动到桌面时,它在std::thread调用中给了我一个未处理的异常 我有一个方法startaceptingclients(),它在取消线程并自己调用时工作良好。但是,当我通过新线程调用它时: std::thread clientsThread(startaceptingclients); 它抛出: WinsockServer.exe中0x62E50BD0处未处理的异常:0xC0000005:访问冲突读取位置0x62E50BD0 MCVE:C++ std::线程引发未处理的异常:访问冲突读取位置,c++,multithreading,exception,access-violation,C++,Multithreading,Exception,Access Violation,我正在尝试在我的简单服务器项目中使用多线程。它在我的笔记本电脑上运行良好,但当我将项目文件夹移动到桌面时,它在std::thread调用中给了我一个未处理的异常 我有一个方法startaceptingclients(),它在取消线程并自己调用时工作良好。但是,当我通过新线程调用它时: std::thread clientsThread(startaceptingclients); 它抛出: WinsockServer.exe中0x62E50BD0处未处理的异常:0xC0000005:访问冲突读取
#pragma一次
#未定义UNICODE
#定义WIN32_精益_和_平均值
#包括
#包括
#包括
#包括
#包括
#包括
#包括
#包括
//需要链接到Ws2_32.lib
#pragma注释(lib,“Ws2_32.lib”)
//#pragma注释(lib,“Mswsock.lib”)
#定义默认值\u BUFLEN 512
#定义默认_端口“27015”
#包括“Client.h”
WSADATA WSADATA;
国际结果;
套接字ListenSocket=无效的\u套接字;
套接字ClientSocket=无效的\u套接字;
struct addrinfo*result=NULL;
结构addrinfo提示;
int iSendResult;
char recvbuf[默认值];
int recvbuflen=默认值;
const int MAXUSERS=8;
客户端*客户端[最大用户];
void ListenForNewClient()
{
//听插座
printf(“侦听连接…\n”);
iResult=侦听(ListenSocket,SOMAXCONN);
if(iResult==SOCKET\u错误){
printf(“侦听失败,错误为:%d\n”,WSAGetLastError());
闭合插座(ListenSocket);
WSACleanup();
std::cin.get();
return;//1;
}
}
客户机*AcceptNewClient()
{
//接受客户端套接字
ClientSocket=accept(ListenSocket,NULL,NULL);
if(ClientSocket==无效的_SOCKET){
printf(“接受失败,错误:%d\n”,WSAGetLastError());
闭合插座(ListenSocket);
WSACleanup();
std::cin.get();
返回NULL;//1;
}
Client*Client=newclient();Client->socket=ClientSocket;
对于(int i=0;iclientID=i;
printf(“客户端%i已加入。\n”,i);
打破
}
}
//不再需要服务器套接字
闭合插座(ListenSocket);
返回客户;
}
void StartReceivingFromClient(客户端*客户端)
{
//接收,直到对等方关闭连接
做{
iResult=recv(客户端->套接字,recvbuf,recvbuflen,0);
如果(iResult>0){
printf(“收到的字节数:%d\n”,iResult);
//将缓冲区回显给发送方
iSendResult=send(客户端->套接字,recvbuf,iResult,0);
if(iSendResult==套接字错误){
printf(“发送失败,错误:%d\n”,WSAGetLastError());
closesocket(客户端->套接字);
WSACleanup();
std::cin.get();
return;//1;
}
printf(“发送的字节数:%d\n”,iSendResult);
}
else if(iResult==0)
printf(“客户端%i已断开连接。\n”,客户端->客户端ID);
否则{
printf(“recv失败,错误:%d\n”,WSAGetLastError());
closesocket(客户端->套接字);
WSACleanup();
std::cin.get();
return;//1;
}
}而(iResult>0);
}
void startaceptingclients()
{
ListenForNewClient();
Client*Client=AcceptNewClient();
client->listenThread=newstd::thread(StartRecievingFromClient,client);
}
//内部cdecl干管(无效)
int main()
{
//初始化Winsock
iResult=WSAStartup(MAKEWORD(2,2)和wsaData);
如果(iResult!=0){
printf(“WSAStartup失败,错误:%d\n”,iResult);
std::cin.get();
返回1;
}
零内存(&提示,sizeof(提示));
hits.ai_family=AF_INET;
hits.ai_socktype=SOCK_流;
hits.ai_protocol=IPPROTO_TCP;
hits.ai_flags=ai_被动;
//解析服务器地址和端口
iResult=getaddrinfo(NULL、默认端口、提示和结果);
如果(iResult!=0){
printf(“getaddrinfo失败,错误:%d\n”,iResult);
WSACleanup();
std::cin.get();
返回1;
}
//创建用于连接到服务器的套接字
ListenSocket=socket(结果->ai_族,结果->ai_socktype,结果->ai_协议);
if(ListenSocket==无效的_套接字){
printf(“套接字失败,错误:%ld\n”,WSAGetLastError());
freeaddrinfo(结果);
WSACleanup();
std::cin.get();
返回1;
}
//设置TCP侦听套接字
iResult=bind(ListenSocket,result->ai_addr,(int)result->ai_addrlen);
if(iResult==SOCKET\u错误){
printf(“绑定失败,错误:%d\n”,WSAGetLastError());
freeaddrinfo(结果);
闭合插座(ListenSocket);
WSACleanup();
std::cin.get();
返回1;
}
freeaddrinfo(结果);
std::thread clientsThread(startaceptingclients);
printf(“游戏循环开始。\n”);
//游戏循环
while(true)
{
std::string命令;
std::getline(std::cin,命令);
}
printf(“游戏循环结束。\n”);
//完成后关闭连接
iResult=关机(客户端套接字,SD\U发送);
if(iResult==SOCKET\u错误){
printf(“关闭失败,错误:%d\n”,WSAGetLastError());
闭合插座(ClientSocket);
WSACleanup();
std::cin.get();
返回1;
}
//清理
闭合插座(ClientSocket);
WSACleanup();
std::cin.get();
返回0;
}
在这里查看实现可能会很有用。您是否能够提供一个最小的、完整的、可验证的示例?请参阅stackoverflow.com/help/mcveDone。希望足够了。clientThread
是否没有join
或detach?clientThread
是否仍在main中时留在作用域块中?(而且,不,这还不够
#pragma once
#undef UNICODE
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <string>
#include <thread>
// Need to link with Ws2_32.lib
#pragma comment (lib, "Ws2_32.lib")
// #pragma comment (lib, "Mswsock.lib")
#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "27015"
#include "Client.h"
WSADATA wsaData;
int iResult;
SOCKET ListenSocket = INVALID_SOCKET;
SOCKET ClientSocket = INVALID_SOCKET;
struct addrinfo *result = NULL;
struct addrinfo hints;
int iSendResult;
char recvbuf[DEFAULT_BUFLEN];
int recvbuflen = DEFAULT_BUFLEN;
const int MAXUSERS = 8;
Client* clients[MAXUSERS];
void ListenForNewClient()
{
//Listen to socket
printf("Listening for connections...\n");
iResult = listen(ListenSocket, SOMAXCONN);
if (iResult == SOCKET_ERROR) {
printf("listen failed with error: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
std::cin.get();
return;// 1;
}
}
Client* AcceptNewClient()
{
// Accept a client socket
ClientSocket = accept(ListenSocket, NULL, NULL);
if (ClientSocket == INVALID_SOCKET) {
printf("accept failed with error: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
std::cin.get();
return NULL;// 1;
}
Client* client = new Client(); client->socket = ClientSocket;
for (int i = 0; i < MAXUSERS; i++)
{
if (clients[i] == NULL)
{
clients[i] = client;
clients[i]->clientID = i;
printf("Client %i has joined.\n", i);
break;
}
}
// No longer need server socket
closesocket(ListenSocket);
return client;
}
void StartRecievingFromClient(Client* client)
{
// Receive until the peer shuts down the connection
do {
iResult = recv(client->socket, recvbuf, recvbuflen, 0);
if (iResult > 0) {
printf("Bytes received: %d\n", iResult);
// Echo the buffer back to the sender
iSendResult = send(client->socket, recvbuf, iResult, 0);
if (iSendResult == SOCKET_ERROR) {
printf("send failed with error: %d\n", WSAGetLastError());
closesocket(client->socket);
WSACleanup();
std::cin.get();
return;// 1;
}
printf("Bytes sent: %d\n", iSendResult);
}
else if (iResult == 0)
printf("Client %i has disconnected.\n", client->clientID);
else {
printf("recv failed with error: %d\n", WSAGetLastError());
closesocket(client->socket);
WSACleanup();
std::cin.get();
return;// 1;
}
} while (iResult > 0);
}
void StartAcceptingClients()
{
ListenForNewClient();
Client* client = AcceptNewClient();
client->listenThread = new std::thread(StartRecievingFromClient, client);
}
//int __cdecl main(void)
int main()
{
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iResult != 0) {
printf("WSAStartup failed with error: %d\n", iResult);
std::cin.get();
return 1;
}
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
// Resolve the server address and port
iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result);
if (iResult != 0) {
printf("getaddrinfo failed with error: %d\n", iResult);
WSACleanup();
std::cin.get();
return 1;
}
// Create a SOCKET for connecting to server
ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if (ListenSocket == INVALID_SOCKET) {
printf("socket failed with error: %ld\n", WSAGetLastError());
freeaddrinfo(result);
WSACleanup();
std::cin.get();
return 1;
}
// Setup the TCP listening socket
iResult = bind(ListenSocket, result->ai_addr, (int)result->ai_addrlen);
if (iResult == SOCKET_ERROR) {
printf("bind failed with error: %d\n", WSAGetLastError());
freeaddrinfo(result);
closesocket(ListenSocket);
WSACleanup();
std::cin.get();
return 1;
}
freeaddrinfo(result);
std::thread clientsThread(StartAcceptingClients);
printf("Game Loop Started.\n");
//Game Loop
while (true)
{
std::string Command;
std::getline(std::cin, Command);
}
printf("Game Loop Ended.\n");
// shutdown the connection since we're done
iResult = shutdown(ClientSocket, SD_SEND);
if (iResult == SOCKET_ERROR) {
printf("shutdown failed with error: %d\n", WSAGetLastError());
closesocket(ClientSocket);
WSACleanup();
std::cin.get();
return 1;
}
// cleanup
closesocket(ClientSocket);
WSACleanup();
std::cin.get();
return 0;
}