进程通信-有名管道

常规C/C++编程

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开发语言：C/C++
实例大小：0.32M
下载次数：13
浏览次数：369
发布时间：2019-07-20
实例类别：常规C/C++编程
发布人：_cl_20190720
文件格式：.zip
所需积分：2

实例介绍

【实例简介】进程通信技术之一，解决本机32位进程与64位进程通讯。使用了有名管道、完型端口
【实例截图】
【核心代码】

int _tmain(int argc, char **args)
{
/*LOGFUNC("%s\n", "Debug 测试模式");
printf("文件:%s\n函数名称:%s\n行数:%d, 参数:1=>%d,2=>%s,3=>%u\n", __FILE__, __FUNCTION__, __LINE__,1,"hello",1000);
system("pause");
return 0;*/

DWORD dwErr;
BOOL fSuccess;
DWORD dwNoOfBytes = 0;
ULONG_PTR ulKey = 0;
OVERLAPPED* pov = NULL;

// Create one event object for the connect operation.
hIocp = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 0);

// Call a subroutine to create one instance, and wait for
// the client to connect.

CreateAndConnectInstance();
while (1)
{
  // Wait for a completion notification.
  pov = NULL;
  fSuccess = GetQueuedCompletionStatus(
   hIocp,         // Completion port handle
   &dwNoOfBytes, // Bytes transferred
   &ulKey,
   &pov,          // OVERLAPPED structure
   INFINITE       // Notification time-out interval
   );

  if (FALSE == fSuccess) {
   dwErr = GetLastError();
   printf("GetQueuedCompletionStatus: dwErr=%x.\n", dwErr);
  }

  // Get the base address of the RECEIVE_CONTEXT structure
  // containing the OVERLAPPED structure received.
  LPPIPEINST ppi = CONTAINING_RECORD(pov, PIPEINST, oOverlap);
  DWORD opType = ppi->opType;
  printf("GetQueuedCompletionStatus: opType=%s,dwNoOfBytes=%d.\n", op_names[opType], dwNoOfBytes);

  if (OP_ACCEPT == opType) {
   // Allocate storage for this instance.
   ppi->cbToWrite = 0;
   CompletedWriteRoutine(0, 0, (LPOVERLAPPED)ppi);

// Create new pipe instance for the next client.
CreateAndConnectInstance();

   // The wait is satisfied by a completed read or write
   // operation. This allows the system to execute the
   // completion routine.

}

  else if (OP_RECV == opType) {
   if (!dwNoOfBytes) {
    DisconnectAndClose(ppi);
   }
   else {
    CompletedReadRoutine(0, dwNoOfBytes, (LPOVERLAPPED)ppi);
   }
  }
  else {
   CompletedWriteRoutine(0, dwNoOfBytes, (LPOVERLAPPED)ppi);
  }
}

return 0;

}

标签： 有名管道完成端口

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