等待所有子线程完成（在C中）

Question

Code first

while(running)
{
    memset(&tcp_client, 0, tcp_client_len);

    FD_ZERO(&readFDs);
    FD_SET(tcp_server_s, &readFDs);
    tv.tv_sec = 1;
    if(select(0, &readFDs, NULL, NULL, &tv))
    {
        if( (tcp_client_s = accept(tcp_server_s, (struct sockaddr *)&tcp_client,&tcp_client_len)) == INVALID_SOCKET )
        {
            cli_log(PROTO_TCP, LOG_ERROR, "(%d) accept() failed\n", WSAGetLastError());
            continue;
        }
        cli_log(PROTO_TCP, LOG_COMM, "(%s:%d) accepted connection\n", inet_ntoa(tcp_client.sin_addr), ntohs(tcp_client.sin_port));

        CreateThread(NULL, 0, tcp_thread, (LPVOID)tcp_client_s, 0, NULL);
    }
}

This is part of my TCP threads handler. What i would like to know is how to make it wait for all his child thread to finish before exiting when not running anymore (CTRL+C signal).

Answer 1

1. Maintain a list of HANDLE s containing the handles of the successfully created threads (a HANDLE is the result of CreateThread() if successful).
2. Use WaitForMultipleObjects() to join on each of the threads prior to application exit.