Network servers are traditionally implemented using a separate process or thread per connection. For high performance applications that need to handle a very large number of clients simultaneously, this approach won't work well, because factors such as resource usage and context-switching time influence the ability to handle many clients at a time. An alternate method is to perform non-blocking I/
This page is a little out of date, and since it was written: GHC's IO manager has been rewritten to use epoll/kqueue/poll, which should mean all the forkIO examples will run faster than they did in this benchmark. network-bytestring has been merged into the network package, so you don't need to get the two libraries separately. Some example of simple web server designs in Haskell, using preemptive
自分用メモ。epoll & Non-Blocking IO による echo サーバの例。 使い方のテスト以上のものではないので、そのままではいろいろまずい。epoll_create や socket で取得した file descriptor を close してなかったり。まねしないように。 #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <sys/socket.h> #include <sys/types.h> #include <sys/epoll.h> #include <netinet/in.h> #define SERVER_PORT 10007 #define MAX_EVENTS 10 #define BAC
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