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/*-------------------------------------------------------------------------
*
* poolcomm.h
*
* Definitions for the Pooler-Seesion communications.
*
*
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
*
* src/include/pgxc/poolcomm.h
*
*-------------------------------------------------------------------------
*/
#ifndef POOLCOMM_H
#define POOLCOMM_H
#include "lib/stringinfo.h"
#define POOL_BUFFER_SIZE 1024
#define Socket(port) (port).fdsock
typedef struct
{
/* file descriptors */
int fdsock;
/* receive buffer */
int RecvLength;
int RecvPointer;
char RecvBuffer[POOL_BUFFER_SIZE];
/* send buffer */
int SendPointer;
char SendBuffer[POOL_BUFFER_SIZE];
} PoolPort;
extern int pool_listen(unsigned short port, const char *unixSocketName);
extern int pool_connect(unsigned short port, const char *unixSocketName);
extern int pool_getbyte(PoolPort *port);
extern int pool_pollbyte(PoolPort *port);
extern int pool_getmessage(PoolPort *port, StringInfo s, int maxlen);
extern int pool_getbytes(PoolPort *port, char *s, size_t len);
extern int pool_putmessage(PoolPort *port, char msgtype, const char *s, size_t len);
extern int pool_putbytes(PoolPort *port, const char *s, size_t len);
extern int pool_flush(PoolPort *port);
extern int pool_sendfds(PoolPort *port, int *fds, int count);
extern int pool_recvfds(PoolPort *port, int *fds, int count);
extern int pool_sendres(PoolPort *port, int res);
extern int pool_recvres(PoolPort *port);
extern int pool_sendpids(PoolPort *port, int *pids, int count);
extern int pool_recvpids(PoolPort *port, int **pids);
#endif /* POOLCOMM_H */
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