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POHow to Implement the Server Waiting Loop(s) for Multiple Client Connections
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copied!<p>I'm working on a Client-Server project. It should be able to handle multiple (>1000) client connections.</p> <p>The main skeleton of my server-side waiting loop looks like this:</p> <pre><code>while(server->running) { // If I remove this, my CPU use will be very intensive // but putting 10 milliseconds sleep will cause a significant delay // What's is the best practice? boost::this_thread::sleep(boost::posix_time::milliseconds(10)); if (server->connectionQueue.empty()) continue; Connection* conn = server->connectionQueue.front(); server->connectionQueue.pop(); Stream* stream = conn->HandleData(); // More steps if needed here server->connectionQueue.push(conn); } </code></pre> <p>My questions are:</p> <ol> <li><p>Currently I'm using one waiting loop for all connections. Is this correct? or what's the best practice? Should I use a waiting loop for each connection?</p></li> <li><p>If I remove the <code>thread::sleep</code>, my CPU use will be very intensive. But putting 10 milliseconds sleep will cause a significant delay, especially, if there are multiple connections. So what's is the best practice?</p></li> <li><p>I googled, and found something called <code>FD_ISSET</code>: <a href="http://linux.die.net/man/3/fd_isset" rel="nofollow">http://linux.die.net/man/3/fd_isset</a></p></li> </ol> <blockquote> <pre><code>/* According to POSIX.1-2001 */ #include <sys/select.h> /* According to earlier standards */ #include <sys/time.h> #include <sys/types.h> #include <unistd.h> int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout); void FD_CLR(int fd, fd_set *set); int FD_ISSET(int fd, fd_set *set); void FD_SET(int fd, fd_set *set); void FD_ZERO(fd_set *set); #define _XOPEN_SOURCE 600 #include <sys/select.h> int pselect(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, const struct timespec *timeout, const sigset_t *sigmask); </code></pre> </blockquote> <p>But I don't know how to use? How can I use it for my Socket File Descriptor?</p> <p>Not sure If I made myself clear.</p>

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