mac环境下编译memcached源码

memcached源码有两个地方可以下载

1. https://github.com/memcached/memcached
2. http://www.memcached.org/downloads

要在mac环境下编译，只能从第二个地方下载。另外memcached依赖libevent，需要从https://libevent.org/下载libevent库。

编译

cd memeched
./configure --with-libevent=/path/to/libevent
make 
make install

从main函数开始

从文件memcached.c中找到main函数，可以发现main函数主要包含下面几个子函数

....
/* initialize other stuff */
    stats_init();
    logger_init();
    conn_init();

        restart_register("main", _mc_meta_load_cb,_mc_meta_save_cb, meta);
         restart_mmap_open(settings.maxbytes,  memory_file,                        &mem_base);
       
        assoc_init(settings.hashpower_init);
....
        slabs_set_storage(storage);
       memcached_thread_init(settings.num_threads, storage);
      init_lru_crawler(storage);
...
      server_sockets(settings.udpport, udp_transport,   portnumber_file)
....