/* conn.h - network connection state */
#ifndef conn_h
#define conn_h
#include "event.h"
#include "job.h"
#define STATE_WANTCOMMAND 0
#define STATE_WANTDATA 1
#define STATE_SENDJOB 2
#define STATE_SENDWORD 3
#define STATE_WAIT 4
/* A command can be at most LINE_BUF_SIZE chars, including "\r\n". This value
* MUST be enough to hold the longest possible command or reply line, which is
* currently "release 18446744073709551615 4294967295 4294967295\r\n". */
#define LINE_BUF_SIZE 54
#define OP_UNKNOWN -1
#define OP_PUT 0
#define OP_PEEKJOB 1
#define OP_RESERVE 2
#define OP_DELETE 3
#define OP_RELEASE 4
#define OP_BURY 5
#define OP_KICK 6
#define OP_STATS 7
#define OP_JOBSTATS 8
#define OP_PEEK 9
/* CONN_TYPE_* are bit masks */
#define CONN_TYPE_PRODUCER 1
#define CONN_TYPE_WORKER 2
#define CONN_TYPE_WAITING 4
typedef struct conn *conn;
struct conn {
conn prev, next; /* linked list of connections */
int fd;
char state;
char type;
struct event evq;
/* we cannot share this buffer with the reply line because we might read in
* command line data for a subsequent command, and we need to store it
* here. */
char cmd[LINE_BUF_SIZE]; /* this string is NOT NUL-terminated */
int cmd_len;
int cmd_read;
char *reply;
int reply_len;
int reply_sent;
char reply_buf[LINE_BUF_SIZE]; /* this string IS NUL-terminated */
job in_job;
int in_job_read;
job out_job;
int out_job_sent;
struct job reserved_jobs; /* doubly-linked list header */
};
void conn_init();
conn make_conn(int fd, char start_state);
int conn_set_evq(conn c, const int events, evh handler);
int conn_update_evq(conn c, const int flags);
void conn_close(conn c);
int conn_list_any_p(conn head);
conn conn_remove(conn c);
void conn_insert(conn head, conn c);
int count_cur_conns();
int count_cur_producers();
int count_cur_workers();
void conn_set_producer(conn c);
void conn_set_worker(conn c);
#endif /*conn_h*/
