Lighty的jobs设计

本文原创为freas_1990，转载请标明出处：http://blog.csdn.net/freas_1990/article/details/18571411

Lighty把连接分为三类：conns,joblist,fdwaitqueue.

这三类都由connections描述。

其中jobs的添加filter如下：

int joblist_append(server *srv, connection *con) {  if (con->in_joblist) return 0;  if (srv->joblist->size == 0) {    srv->joblist->size  = 16;    srv->joblist->ptr   = malloc(sizeof(*srv->joblist->ptr) * srv->joblist->size);  } else if (srv->joblist->used == srv->joblist->size) {    srv->joblist->size += 16;    srv->joblist->ptr   = realloc(srv->joblist->ptr, sizeof(*srv->joblist->ptr) * srv->joblist->size);  }  srv->joblist->ptr[srv->joblist->used++] = con;  return 0;}

而fdwaitqueue添加的filter如下：

int fdwaitqueue_append(server *srv, connection *con) {  if (srv->fdwaitqueue->size == 0) {    srv->fdwaitqueue->size  = 16;    srv->fdwaitqueue->ptr   = malloc(sizeof(*(srv->fdwaitqueue->ptr)) * srv->fdwaitqueue->size);  } else if (srv->fdwaitqueue->used == srv->fdwaitqueue->size) {    srv->fdwaitqueue->size += 16;    srv->fdwaitqueue->ptr   = realloc(srv->fdwaitqueue->ptr, sizeof(*(srv->fdwaitqueue->ptr)) * srv->fdwaitqueue->size);  }  srv->fdwaitqueue->ptr[srv->fdwaitqueue->used++] = con;  return 0;}

至于connections的设计，如下：

typedef struct {  connection **ptr;  size_t size;  size_t used;} connections;

而connection设计如下：

typedef struct {  connection_state_t state;  /* timestamps */  time_t read_idle_ts;  time_t close_timeout_ts;  time_t write_request_ts;  time_t connection_start;  time_t request_start;  struct timeval start_tv;  size_t request_count;        /* number of requests handled in this connection */  size_t loops_per_request;    /* to catch endless loops in a single request              *              * used by mod_rewrite, mod_fastcgi, ... and others              * this is self-protection              */  int fd;                      /* the FD for this connection */  int fde_ndx;                 /* index for the fdevent-handler */  int ndx;                     /* reverse mapping to server->connection[ndx] */  /* fd states */  int is_readable;  int is_writable;  int keep_alive;              /* only request.c can enable it, all other just disable */  int keep_alive_idle;         /* remember max_keep_alive_idle from config */  int file_started;  int file_finished;  chunkqueue *write_queue;      /* a large queue for low-level write ( HTTP response ) [ file, mem ] */  chunkqueue *read_queue;       /* a small queue for low-level read ( HTTP request ) [ mem ] */  chunkqueue *request_content_queue; /* takes request-content into tempfile if necessary [ tempfile, mem ]*/  int traffic_limit_reached;  off_t bytes_written;          /* used by mod_accesslog, mod_rrd */  off_t bytes_written_cur_second; /* used by mod_accesslog, mod_rrd */  off_t bytes_read;             /* used by mod_accesslog, mod_rrd */  off_t bytes_header;  int http_status;  sock_addr dst_addr;  buffer *dst_addr_buf;  /* request */  buffer *parse_request;  unsigned int parsed_response; /* bitfield which contains the important header-fields of the parsed response header */  request  request;  request_uri uri;  physical physical;  response response;  size_t header_len;  buffer *authed_user;  array  *environment; /* used to pass lighttpd internal stuff to the FastCGI/CGI apps, setenv does that */  /* response */  int    got_response;  int    in_joblist;  connection_type mode;  void **plugin_ctx;           /* plugin connection specific config */  specific_config conf;        /* global connection specific config */  cond_cache_t *cond_cache;  buffer *server_name;  /* error-handler */  buffer *error_handler;  int error_handler_saved_status;  int in_error_handler;  void *srv_socket;   /* reference to the server-socket (typecast to server_socket) */#ifdef USE_OPENSSL  SSL *ssl;# ifndef OPENSSL_NO_TLSEXT  buffer *tlsext_server_name;# endif  unsigned int renegotiations; /* count of SSL_CB_HANDSHAKE_START */#endif  /* etag handling */  etag_flags_t etag_flags;  int conditional_is_valid[COMP_LAST_ELEMENT]; } connection;

源代码是最有营养的资源！放下意淫的书籍！enjoy the source code！