GetQueuedCompletionStatus 永远阻塞
我正在编写一个服务器应用程序,我想使用 IOCompletion 端口,因此我为服务器编写了一个原型,但我遇到了 GetQueuedCompletionStatus 的问题,它永远不会返回(它会阻塞)。下面是我的代码: <代码>
bool CreateSocketOverlappedServer()
{
WSADATA wsaData;
SOCKADDR_IN sockaddr;
if(WSAStartup(MAKEWORD(2,2,),&wsaData)){
_tprintf(_T("Unable to start up\n"));
return false;
}
SrvSocket = WSASocket(AF_INET,SOCK_STREAM,0,NULL,NULL,WSA_FLAG_OVERLAPPED);
if(SrvSocket==INVALID_SOCKET){
_tprintf(_T("Unable to start socket\n"));
return false;
}
sockaddr.sin_family = AF_INET;
sockaddr.sin_port = htons(10000);
sockaddr.sin_addr.s_addr = INADDR_ANY;
/* now bind the socket */
if(bind(SrvSocket, (SOCKADDR *)&sockaddr, sizeof(SOCKADDR_IN))==SOCKET_ERROR){
_tprintf(_T("Unable to bind socket\n"));
return false;
}
if(listen(SrvSocket, 5)==SOCKET_ERROR){
_tprintf(_T("Error listening\n"));
return false;
}
return true;
}
<代码> <代码>
void WorkerThread(void *arg)
{
bool bret= false;
DWORD dwTransferedBytes=0;
CLIENTS *client;
PPER_IO_OPERATION_DATA data;
/* Just sleep for now */
while(true){
_tprintf(_T("Entering while\n"));
bret = GetQueuedCompletionStatus(hIocp,&dwTransferedBytes,(PULONG_PTR)&client,(LPOVERLAPPED *) &data,INFINITE);
if(!bret){
_tprintf(_T("Unable to process completion port\n"));
}
}
//Sleep(10000);
}
void AcceptClientConnections(void *arg)
{
SOCKET ClientSocket;
CLIENTS *c;
_tprintf(_T("Start accepting client connections\n"));
while(true){
ClientSocket = accept(SrvSocket, NULL,NULL);
if(ClientSocket==INVALID_SOCKET){
_tprintf(_T("Unable to accept connection\n"));
continue;
}
/* do an association with completion port */
c = (CLIENTS *)malloc(sizeof(CLIENTS));
c->sock = ClientSocket;
/* associate with completion port */
if(!CreateIoCompletionPort((HANDLE)ClientSocket, hIocp, (ULONG_PTR)c,0)){
_tprintf(_T("Unable to associate with completion port\n: %d"),GetLastError());
}
}
}
有什么想法吗? 提前致谢。
I'm writing a server application and I want to use IOCompletion ports, so I wrote a prototype for the server, but I'm facing a problem with GetQueuedCompletionStatus that it never returns(it blocks). Below is my code:
bool CreateSocketOverlappedServer()
{
WSADATA wsaData;
SOCKADDR_IN sockaddr;
if(WSAStartup(MAKEWORD(2,2,),&wsaData)){
_tprintf(_T("Unable to start up\n"));
return false;
}
SrvSocket = WSASocket(AF_INET,SOCK_STREAM,0,NULL,NULL,WSA_FLAG_OVERLAPPED);
if(SrvSocket==INVALID_SOCKET){
_tprintf(_T("Unable to start socket\n"));
return false;
}
sockaddr.sin_family = AF_INET;
sockaddr.sin_port = htons(10000);
sockaddr.sin_addr.s_addr = INADDR_ANY;
/* now bind the socket */
if(bind(SrvSocket, (SOCKADDR *)&sockaddr, sizeof(SOCKADDR_IN))==SOCKET_ERROR){
_tprintf(_T("Unable to bind socket\n"));
return false;
}
if(listen(SrvSocket, 5)==SOCKET_ERROR){
_tprintf(_T("Error listening\n"));
return false;
}
return true;
}
void WorkerThread(void *arg)
{
bool bret= false;
DWORD dwTransferedBytes=0;
CLIENTS *client;
PPER_IO_OPERATION_DATA data;
/* Just sleep for now */
while(true){
_tprintf(_T("Entering while\n"));
bret = GetQueuedCompletionStatus(hIocp,&dwTransferedBytes,(PULONG_PTR)&client,(LPOVERLAPPED *) &data,INFINITE);
if(!bret){
_tprintf(_T("Unable to process completion port\n"));
}
}
//Sleep(10000);
}
void AcceptClientConnections(void *arg) { SOCKET ClientSocket; CLIENTS *c; _tprintf(_T("Start accepting client connections\n")); while(true){ ClientSocket = accept(SrvSocket, NULL,NULL); if(ClientSocket==INVALID_SOCKET){ _tprintf(_T("Unable to accept connection\n")); continue; } /* do an association with completion port */ c = (CLIENTS *)malloc(sizeof(CLIENTS)); c->sock = ClientSocket; /* associate with completion port */ if(!CreateIoCompletionPort((HANDLE)ClientSocket, hIocp, (ULONG_PTR)c,0)){ _tprintf(_T("Unable to associate with completion port\n: %d"),GetLastError()); } } }
Any idea?
thanks in advance.
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您没有正确使用完成端口,因此它没有任何作用,因此没有要报告的状态。将完成端口与套接字一起使用是一个两步过程,但您只执行了一半步骤。
有关详细信息,请阅读以下 MSDN 文章:
Windows Sockets 2.0:使用完成端口编写可扩展的 Winsock 应用程序
You are not using the Completion Port correctly, so it has nothing to do, and thus no status to report. Using a Completion Port with sockets is a two-step process, but you are only doing half of the steps.
Read the following MSDN article for details:
Windows Sockets 2.0: Write Scalable Winsock Apps Using Completion Ports
一种可能性:检查您是否已将侦听器套接字与完成端口相关联(我自己也犯过这个错误)。如果没有,GetQueuedCompletionStatus() 将永远阻塞。
ONe possibility: Check if you have associated the listener socket with the completion port (made this mistake myself). If you haven't the GetQueuedCompletionStatus() will block forever.