Coro-Mysql/violite.h

/* adapted from violite.h from mysql 5.0.51 and many others */
/* all modifications public domain */
/* Copyright (C) 2000 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/*
 * Vio Lite.
 * Purpose: include file for Vio that will work with C and C++
 */

#ifndef vio_violite_h_
#define vio_violite_h_

/* Simple vio interface in C;  The functions are implemented in violite.c */

#ifdef  __cplusplus
extern "C" {
#endif /* __cplusplus */

#if MYSQL_VERSION_ID < 50100
typedef       I8 *xgptr;
typedef       I8 *const cxgptr;
typedef int    xlen;
#else
typedef       U8 *xgptr;
typedef const U8 *cxgptr;
typedef size_t xlen;
#endif

enum enum_vio_type
{
  VIO_CLOSED, VIO_TYPE_TCPIP, VIO_TYPE_SOCKET, VIO_TYPE_NAMEDPIPE,
  VIO_TYPE_SSL, VIO_TYPE_SHARED_MEMORY
};


#define VIO_LOCALHOST 1                         /* a localhost connection */
#define VIO_BUFFERED_READ 2                     /* use buffered read */
#define VIO_READ_BUFFER_SIZE 16384              /* size of read buffer */

Vio*    vio_new(my_socket sd, enum enum_vio_type type, uint flags);
#ifdef __WIN__
Vio* vio_new_win32pipe(HANDLE hPipe);
Vio* vio_new_win32shared_memory(NET *net,HANDLE handle_file_map,
                                HANDLE handle_map,
                                HANDLE event_server_wrote,
                                HANDLE event_server_read,
                                HANDLE event_client_wrote,
                                HANDLE event_client_read,
                                HANDLE event_conn_closed);
xlen vio_read_pipe(Vio *vio, xgptr buf, xlen size);
xlen vio_write_pipe(Vio *vio, xcgptr buf, xlen size);
xlen vio_close_pipe(Vio * vio);
#else
#define HANDLE void *
#endif /* __WIN__ */

void    vio_delete(Vio* vio);
int     vio_close(Vio* vio);
void    vio_reset(Vio* vio, enum enum_vio_type type,
                  my_socket sd, HANDLE hPipe, uint flags);
xlen    vio_read(Vio *vio, xgptr buf, xlen size);
xlen    vio_read_buff(Vio *vio, xgptr buf, xlen size);
xlen    vio_write(Vio *vio, cxgptr buf, xlen size);
int     vio_blocking(Vio *vio, my_bool onoff, my_bool *old_mode);
my_bool vio_is_blocking(Vio *vio);
/* setsockopt TCP_NODELAY at IPPROTO_TCP level, when possible */
int     vio_fastsend(Vio *vio);
/* setsockopt SO_KEEPALIVE at SOL_SOCKET level, when possible */
int     vio_keepalive(Vio *vio, my_bool onoff);
/* Whenever we should retry the last read/write operation. */
my_bool vio_should_retry(Vio *vio);
/* Check that operation was timed out */
my_bool vio_was_interrupted(Vio *vio);
/* Short text description of the socket for those, who are curious.. */
const char* vio_description(Vio *vio);
/* Return the type of the connection */
enum enum_vio_type vio_type(Vio* vio);
/* Return last error number */
int     vio_errno(Vio*vio);
/* Get socket number */
my_socket vio_fd(Vio*vio);
/* Remote peer's address and name in text form */
my_bool vio_peer_addr(Vio* vio, char *buf, uint16 *port);
/* Remotes in_addr */
void    vio_in_addr(Vio *vio, struct in_addr *in);
my_bool vio_poll_read(Vio *vio,uint timeout);

void vio_end(void);

#ifdef  __cplusplus
}
#endif

#if !defined(DONT_MAP_VIO)
#define vio_delete(vio)                         (vio)->viodelete(vio)
#define vio_errno(vio)                          (vio)->vioerrno(vio)
#define vio_read(vio, buf, size)                ((vio)->read)(vio,buf,size)
#define vio_write(vio, buf, size)               ((vio)->write)(vio, buf, size)
#define vio_blocking(vio, set_blocking_mode, old_mode)\
        (vio)->vioblocking(vio, set_blocking_mode, old_mode)
#define vio_is_blocking(vio)                    (vio)->is_blocking(vio)
#define vio_fastsend(vio)                       (vio)->fastsend(vio)
#define vio_keepalive(vio, set_keep_alive)      (vio)->viokeepalive(vio, set_keep_alive)
#define vio_should_retry(vio)                   (vio)->should_retry(vio)
#define vio_was_interrupted(vio)                (vio)->was_interrupted(vio)
#define vio_close(vio)                          ((vio)->vioclose)(vio)
#define vio_peer_addr(vio, buf, prt)            (vio)->peer_addr(vio, buf, prt)
#define vio_in_addr(vio, in)                    (vio)->in_addr(vio, in)
#define vio_timeout(vio, which, seconds)        (vio)->timeout(vio, which, seconds)
#endif /* !defined(DONT_MAP_VIO) */

/* This enumerator is used in parser - should be always visible */
enum SSL_type
{
  SSL_TYPE_NOT_SPECIFIED= -1,
  SSL_TYPE_NONE,
  SSL_TYPE_ANY,
  SSL_TYPE_X509,
  SSL_TYPE_SPECIFIED
};

typedef unsigned char uchar;

/* HFTODO - hide this if we don't want client in embedded server */
/* This structure is for every connection on both sides */
#if defined(MARIADB_BASE_VERSION) && MYSQL_VERSION_ID >= 100010

#define DESC_IS_PTR 1

struct st_vio
{
  my_socket             sd;             /* my_socket - real or imaginary */
  void *m_psi;
  my_bool               localhost;      /* Are we from localhost? */
  int                   fcntl_mode;     /* Buffered fcntl(sd,F_GETFL) */
  struct sockaddr_storage local;        /* Local internet address */
  struct sockaddr_storage remote;       /* Remote internet address */
  int addrLen;                          /* Length of remote address */
  enum enum_vio_type    type;           /* Type of connection */
  const char            *desc;          /* String description */
  char                  *read_buffer;   /* buffer for vio_read_buff */
  char                  *read_pos;      /* start of unfetched data in the
                                           read buffer */
  char                  *read_end;      /* end of unfetched data */
  struct mysql_async_context *async_context; /* For non-blocking API */
  int                   read_timeout;   /* Timeout value (ms) for read ops. */
  int                   write_timeout;  /* Timeout value (ms) for write ops. */
  /* function pointers. They are similar for socket/SSL/whatever */
  void    (*viodelete)(Vio*);
  int     (*vioerrno)(Vio*);
  size_t  (*read)(Vio*, uchar *, size_t);
  size_t  (*write)(Vio*, const uchar *, size_t);
  int     (*timeout)(Vio*, uint, my_bool);
  int     (*vioblocking)(Vio*, my_bool, my_bool *);
  my_bool (*is_blocking)(Vio*);
  int     (*viokeepalive)(Vio*, my_bool);
  int     (*fastsend)(Vio*);
  my_bool (*peer_addr)(Vio*, char *, uint16*, size_t);
  void    (*in_addr)(Vio*, struct sockaddr_storage*);
  my_bool (*should_retry)(Vio*);
  my_bool (*was_timeout)(Vio*);
  int     (*vioclose)(Vio*);
  my_bool (*is_connected)(Vio*);
  int (*shutdown)(Vio *, int);
  my_bool (*has_data) (Vio*);
};

#elif MYSQL_VERSION_ID < 50500

struct st_vio
{
  my_socket             sd;             /* my_socket - real or imaginary */
  HANDLE hPipe;
  my_bool               localhost;      /* Are we from localhost? */
  int                   fcntl_mode;     /* Buffered fcntl(sd,F_GETFL) */
  struct sockaddr_in    local;          /* Local internet address */
  struct sockaddr_in    remote;         /* Remote internet address */
  enum enum_vio_type    type;           /* Type of connection */
  char                  desc[30];       /* String description */
  char                  *read_buffer;   /* buffer for vio_read_buff */
  char                  *read_pos;      /* start of unfetched data in the
                                           read buffer */
  char                  *read_end;      /* end of unfetched data */
  /* function pointers. They are similar for socket/SSL/whatever */
  void    (*viodelete)(Vio*);
  int     (*vioerrno)(Vio*);
  xlen    (*read)(Vio*, xgptr, xlen);
  xlen    (*write)(Vio*, cxgptr, xlen);
  int     (*vioblocking)(Vio*, my_bool, my_bool *);
  my_bool (*is_blocking)(Vio*);
  int     (*viokeepalive)(Vio*, my_bool);
  int     (*fastsend)(Vio*);
  my_bool (*peer_addr)(Vio*, char *, uint16*);
  void    (*in_addr)(Vio*, struct in_addr*);
  my_bool (*should_retry)(Vio*);
  my_bool (*was_interrupted)(Vio*);
  int     (*vioclose)(Vio*);
  void    (*timeout)(Vio*, unsigned int which, unsigned int timeout);
};

#elif MYSQL_VERSION_ID < 50600

struct st_vio
{
  my_socket             sd;             /* my_socket - real or imaginary */
  HANDLE hPipe;
  my_bool               localhost;      /* Are we from localhost? */
  int                   fcntl_mode;     /* Buffered fcntl(sd,F_GETFL) */
  struct sockaddr_storage       local;          /* Local internet address */
  struct sockaddr_storage       remote;         /* Remote internet address */
  int addrLen;                          /* Length of remote address */
  enum enum_vio_type    type;           /* Type of connection */
  char                  desc[30];       /* String description */
  char                  *read_buffer;   /* buffer for vio_read_buff */
  char                  *read_pos;      /* start of unfetched data in the
                                           read buffer */
  char                  *read_end;      /* end of unfetched data */
  /* function pointers. They are similar for socket/SSL/whatever */
  void    (*viodelete)(Vio*);
  int     (*vioerrno)(Vio*);
  size_t  (*read)(Vio*, unsigned char *, size_t);
  size_t  (*write)(Vio*, const unsigned char *, size_t);
  int     (*vioblocking)(Vio*, my_bool, my_bool *);
  my_bool (*is_blocking)(Vio*);
  int     (*viokeepalive)(Vio*, my_bool);
  int     (*fastsend)(Vio*);
  my_bool (*peer_addr)(Vio*, char *, uint16*, size_t);
  void    (*in_addr)(Vio*, struct sockaddr_storage*);
  my_bool (*should_retry)(Vio*);
  my_bool (*was_interrupted)(Vio*);
  int     (*vioclose)(Vio*);
  void    (*timeout)(Vio*, unsigned int which, unsigned int timeout);
  my_bool (*poll_read)(Vio *vio, uint timeout);
  my_bool (*is_connected)(Vio*);
  my_bool (*has_data) (Vio*);
};

#else

/* this is not supposed to work, but it's a start
 * one needs to look into MYSQL_SOCKET, missing
 * vioblocking and this io_wait stuff, at the least. */

/**
  VIO I/O events.
*/
enum enum_vio_io_event
{
  VIO_IO_EVENT_READ,
  VIO_IO_EVENT_WRITE,
  VIO_IO_EVENT_CONNECT
};

struct st_vio
{
  MYSQL_SOCKET  mysql_socket;           /* Instrumented socket */
  my_bool       localhost;              /* Are we from localhost? */
  struct sockaddr_storage   local;      /* Local internet address */
  struct sockaddr_storage   remote;     /* Remote internet address */
  int addrLen;                          /* Length of remote address */
  enum enum_vio_type    type;           /* Type of connection */
  my_bool               inactive; /* Connection inactive (has been shutdown) */
  char                  desc[30]; /* Description string. This
                                                      member MUST NOT be
                                                      used directly, but only
                                                      via function
                                                      "vio_description" */
  char                  *read_buffer;   /* buffer for vio_read_buff */
  char                  *read_pos;      /* start of unfetched data in the
                                           read buffer */
  char                  *read_end;      /* end of unfetched data */
  int                   read_timeout;   /* Timeout value (ms) for read ops. */
  int                   write_timeout;  /* Timeout value (ms) for write ops. */
  
  /* 
     VIO vtable interface to be implemented by VIO's like SSL, Socket,
     Named Pipe, etc.
  */
  
  /* 
     viodelete is responsible for cleaning up the VIO object by freeing 
     internal buffers, closing descriptors, handles. 
  */
  void    (*viodelete)(Vio*);
  int     (*vioerrno)(Vio*);
  size_t  (*read)(Vio*, uchar *, size_t);
  size_t  (*write)(Vio*, const uchar *, size_t);
  int     (*timeout)(Vio*, uint, my_bool);
  int     (*viokeepalive)(Vio*, my_bool);
  int     (*fastsend)(Vio*);
  my_bool (*peer_addr)(Vio*, char *, uint16*, size_t);
  void    (*in_addr)(Vio*, struct sockaddr_storage*);
  my_bool (*should_retry)(Vio*);
  my_bool (*was_timeout)(Vio*);
  /* 
     vioshutdown is resposnible to shutdown/close the channel, so that no 
     further communications can take place, however any related buffers,
     descriptors, handles can remain valid after a shutdown.
  */
  int     (*vioshutdown)(Vio*);
  my_bool (*is_connected)(Vio*);
  my_bool (*has_data) (Vio*);
  int (*io_wait)(Vio*, enum enum_vio_io_event, int);
  my_bool (*connect)(Vio*, struct sockaddr *, socklen_t, int);
};

#endif

#endif /* vio_violite_h_ */
Revision:	1.7
Committed:	Tue Jun 3 03:08:34 2014 UTC (9 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-1_24
Changes since 1.6:	+1 -1 lines
Log Message:	1.24
#	User	Rev	Content
1	root	1.4	/* adapted from violite.h from mysql 5.0.51 and many others */
2	root	1.1	/* all modifications public domain */
3			/* Copyright (C) 2000 MySQL AB
4
5			This program is free software; you can redistribute it and/or modify
6			it under the terms of the GNU General Public License as published by
7			the Free Software Foundation; version 2 of the License.
8
9			This program is distributed in the hope that it will be useful,
10			but WITHOUT ANY WARRANTY; without even the implied warranty of
11			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12			GNU General Public License for more details.
13
14			You should have received a copy of the GNU General Public License
15			along with this program; if not, write to the Free Software
16			Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
17
18			/*
19			* Vio Lite.
20			* Purpose: include file for Vio that will work with C and C++
21			*/
22
23			#ifndef vio_violite_h_
24			#define vio_violite_h_
25
26			/* Simple vio interface in C; The functions are implemented in violite.c */
27
28			#ifdef __cplusplus
29			extern "C" {
30			#endif /* __cplusplus */
31
32	root	1.3	#if MYSQL_VERSION_ID < 50100
33			typedef I8 *xgptr;
34			typedef I8 *const cxgptr;
35			typedef int xlen;
36			#else
37			typedef U8 *xgptr;
38			typedef const U8 *cxgptr;
39			typedef size_t xlen;
40			#endif
41	root	1.2
42	root	1.1	enum enum_vio_type
43			{
44			VIO_CLOSED, VIO_TYPE_TCPIP, VIO_TYPE_SOCKET, VIO_TYPE_NAMEDPIPE,
45			VIO_TYPE_SSL, VIO_TYPE_SHARED_MEMORY
46			};
47
48
49			#define VIO_LOCALHOST 1 /* a localhost connection */
50			#define VIO_BUFFERED_READ 2 /* use buffered read */
51			#define VIO_READ_BUFFER_SIZE 16384 /* size of read buffer */
52
53			Vio* vio_new(my_socket sd, enum enum_vio_type type, uint flags);
54			#ifdef __WIN__
55			Vio* vio_new_win32pipe(HANDLE hPipe);
56			Vio* vio_new_win32shared_memory(NET *net,HANDLE handle_file_map,
57			HANDLE handle_map,
58			HANDLE event_server_wrote,
59			HANDLE event_server_read,
60			HANDLE event_client_wrote,
61			HANDLE event_client_read,
62			HANDLE event_conn_closed);
63	root	1.3	xlen vio_read_pipe(Vio *vio, xgptr buf, xlen size);
64			xlen vio_write_pipe(Vio *vio, xcgptr buf, xlen size);
65			xlen vio_close_pipe(Vio * vio);
66	root	1.1	#else
67			#define HANDLE void *
68			#endif /* __WIN__ */
69
70			void vio_delete(Vio* vio);
71			int vio_close(Vio* vio);
72			void vio_reset(Vio* vio, enum enum_vio_type type,
73			my_socket sd, HANDLE hPipe, uint flags);
74	root	1.3	xlen vio_read(Vio *vio, xgptr buf, xlen size);
75			xlen vio_read_buff(Vio *vio, xgptr buf, xlen size);
76			xlen vio_write(Vio *vio, cxgptr buf, xlen size);
77	root	1.1	int vio_blocking(Vio vio, my_bool onoff, my_bool old_mode);
78			my_bool vio_is_blocking(Vio *vio);
79			/* setsockopt TCP_NODELAY at IPPROTO_TCP level, when possible */
80			int vio_fastsend(Vio *vio);
81			/* setsockopt SO_KEEPALIVE at SOL_SOCKET level, when possible */
82			int vio_keepalive(Vio *vio, my_bool onoff);
83			/* Whenever we should retry the last read/write operation. */
84			my_bool vio_should_retry(Vio *vio);
85			/* Check that operation was timed out */
86			my_bool vio_was_interrupted(Vio *vio);
87			/* Short text description of the socket for those, who are curious.. */
88			const char* vio_description(Vio *vio);
89			/* Return the type of the connection */
90			enum enum_vio_type vio_type(Vio* vio);
91			/* Return last error number */
92			int vio_errno(Vio*vio);
93			/* Get socket number */
94			my_socket vio_fd(Vio*vio);
95			/* Remote peer's address and name in text form */
96			my_bool vio_peer_addr(Vio* vio, char buf, uint16 port);
97			/* Remotes in_addr */
98			void vio_in_addr(Vio vio, struct in_addr in);
99			my_bool vio_poll_read(Vio *vio,uint timeout);
100
101			void vio_end(void);
102
103			#ifdef __cplusplus
104			}
105			#endif
106
107			#if !defined(DONT_MAP_VIO)
108			#define vio_delete(vio) (vio)->viodelete(vio)
109			#define vio_errno(vio) (vio)->vioerrno(vio)
110			#define vio_read(vio, buf, size) ((vio)->read)(vio,buf,size)
111			#define vio_write(vio, buf, size) ((vio)->write)(vio, buf, size)
112			#define vio_blocking(vio, set_blocking_mode, old_mode)\
113			(vio)->vioblocking(vio, set_blocking_mode, old_mode)
114			#define vio_is_blocking(vio) (vio)->is_blocking(vio)
115			#define vio_fastsend(vio) (vio)->fastsend(vio)
116			#define vio_keepalive(vio, set_keep_alive) (vio)->viokeepalive(vio, set_keep_alive)
117			#define vio_should_retry(vio) (vio)->should_retry(vio)
118			#define vio_was_interrupted(vio) (vio)->was_interrupted(vio)
119			#define vio_close(vio) ((vio)->vioclose)(vio)
120			#define vio_peer_addr(vio, buf, prt) (vio)->peer_addr(vio, buf, prt)
121			#define vio_in_addr(vio, in) (vio)->in_addr(vio, in)
122			#define vio_timeout(vio, which, seconds) (vio)->timeout(vio, which, seconds)
123			#endif /* !defined(DONT_MAP_VIO) */
124
125			/* This enumerator is used in parser - should be always visible */
126			enum SSL_type
127			{
128			SSL_TYPE_NOT_SPECIFIED= -1,
129			SSL_TYPE_NONE,
130			SSL_TYPE_ANY,
131			SSL_TYPE_X509,
132			SSL_TYPE_SPECIFIED
133			};
134
135	root	1.5	typedef unsigned char uchar;
136	root	1.1
137			/* HFTODO - hide this if we don't want client in embedded server */
138			/* This structure is for every connection on both sides */
139	root	1.7	#if defined(MARIADB_BASE_VERSION) && MYSQL_VERSION_ID >= 100010
140	root	1.4
141			#define DESC_IS_PTR 1
142
143			struct st_vio
144			{
145			my_socket sd; /* my_socket - real or imaginary */
146			void *m_psi;
147			my_bool localhost; /* Are we from localhost? */
148			int fcntl_mode; /* Buffered fcntl(sd,F_GETFL) */
149			struct sockaddr_storage local; /* Local internet address */
150			struct sockaddr_storage remote; /* Remote internet address */
151			int addrLen; /* Length of remote address */
152			enum enum_vio_type type; /* Type of connection */
153			const char desc; / String description */
154			char read_buffer; / buffer for vio_read_buff */
155			char read_pos; / start of unfetched data in the
156			read buffer */
157			char read_end; / end of unfetched data */
158			struct mysql_async_context async_context; / For non-blocking API */
159			int read_timeout; /* Timeout value (ms) for read ops. */
160			int write_timeout; /* Timeout value (ms) for write ops. */
161			/* function pointers. They are similar for socket/SSL/whatever */
162			void (viodelete)(Vio);
163			int (vioerrno)(Vio);
164			size_t (read)(Vio, uchar *, size_t);
165			size_t (write)(Vio, const uchar *, size_t);
166			int (timeout)(Vio, uint, my_bool);
167			int (vioblocking)(Vio, my_bool, my_bool *);
168			my_bool (is_blocking)(Vio);
169			int (viokeepalive)(Vio, my_bool);
170			int (fastsend)(Vio);
171			my_bool (peer_addr)(Vio, char , uint16, size_t);
172			void (in_addr)(Vio, struct sockaddr_storage*);
173			my_bool (should_retry)(Vio);
174			my_bool (was_timeout)(Vio);
175			int (vioclose)(Vio);
176			my_bool (is_connected)(Vio);
177			int (shutdown)(Vio , int);
178			my_bool (has_data) (Vio);
179			};
180
181			#elif MYSQL_VERSION_ID < 50500
182	root	1.3
183	root	1.1	struct st_vio
184			{
185			my_socket sd; /* my_socket - real or imaginary */
186			HANDLE hPipe;
187			my_bool localhost; /* Are we from localhost? */
188			int fcntl_mode; /* Buffered fcntl(sd,F_GETFL) */
189			struct sockaddr_in local; /* Local internet address */
190			struct sockaddr_in remote; /* Remote internet address */
191			enum enum_vio_type type; /* Type of connection */
192			char desc[30]; /* String description */
193			char read_buffer; / buffer for vio_read_buff */
194			char read_pos; / start of unfetched data in the
195			read buffer */
196			char read_end; / end of unfetched data */
197			/* function pointers. They are similar for socket/SSL/whatever */
198			void (viodelete)(Vio);
199			int (vioerrno)(Vio);
200	root	1.3	xlen (read)(Vio, xgptr, xlen);
201			xlen (write)(Vio, cxgptr, xlen);
202	root	1.1	int (vioblocking)(Vio, my_bool, my_bool *);
203			my_bool (is_blocking)(Vio);
204			int (viokeepalive)(Vio, my_bool);
205			int (fastsend)(Vio);
206			my_bool (peer_addr)(Vio, char , uint16);
207			void (in_addr)(Vio, struct in_addr*);
208			my_bool (should_retry)(Vio);
209			my_bool (was_interrupted)(Vio);
210			int (vioclose)(Vio);
211			void (timeout)(Vio, unsigned int which, unsigned int timeout);
212	root	1.3	};
213
214	root	1.5	#elif MYSQL_VERSION_ID < 50600
215	root	1.3
216			struct st_vio
217			{
218			my_socket sd; /* my_socket - real or imaginary */
219			HANDLE hPipe;
220			my_bool localhost; /* Are we from localhost? */
221			int fcntl_mode; /* Buffered fcntl(sd,F_GETFL) */
222			struct sockaddr_storage local; /* Local internet address */
223			struct sockaddr_storage remote; /* Remote internet address */
224			int addrLen; /* Length of remote address */
225			enum enum_vio_type type; /* Type of connection */
226			char desc[30]; /* String description */
227			char read_buffer; / buffer for vio_read_buff */
228			char read_pos; / start of unfetched data in the
229			read buffer */
230			char read_end; / end of unfetched data */
231			/* function pointers. They are similar for socket/SSL/whatever */
232			void (viodelete)(Vio);
233			int (vioerrno)(Vio);
234			size_t (read)(Vio, unsigned char *, size_t);
235			size_t (write)(Vio, const unsigned char *, size_t);
236			int (vioblocking)(Vio, my_bool, my_bool *);
237			my_bool (is_blocking)(Vio);
238			int (viokeepalive)(Vio, my_bool);
239			int (fastsend)(Vio);
240			my_bool (peer_addr)(Vio, char , uint16, size_t);
241			void (in_addr)(Vio, struct sockaddr_storage*);
242			my_bool (should_retry)(Vio);
243			my_bool (was_interrupted)(Vio);
244			int (vioclose)(Vio);
245			void (timeout)(Vio, unsigned int which, unsigned int timeout);
246			my_bool (poll_read)(Vio vio, uint timeout);
247			my_bool (is_connected)(Vio);
248			my_bool (has_data) (Vio);
249			};
250
251	root	1.5	#else
252
253			/* this is not supposed to work, but it's a start
254			* one needs to look into MYSQL_SOCKET, missing
255			* vioblocking and this io_wait stuff, at the least. */
256
257			/**
258			VIO I/O events.
259			*/
260			enum enum_vio_io_event
261			{
262			VIO_IO_EVENT_READ,
263			VIO_IO_EVENT_WRITE,
264			VIO_IO_EVENT_CONNECT
265			};
266
267			struct st_vio
268			{
269			MYSQL_SOCKET mysql_socket; /* Instrumented socket */
270			my_bool localhost; /* Are we from localhost? */
271			struct sockaddr_storage local; /* Local internet address */
272			struct sockaddr_storage remote; /* Remote internet address */
273			int addrLen; /* Length of remote address */
274			enum enum_vio_type type; /* Type of connection */
275			my_bool inactive; /* Connection inactive (has been shutdown) */
276			char desc[30]; /* Description string. This
277			member MUST NOT be
278			used directly, but only
279			via function
280			"vio_description" */
281			char read_buffer; / buffer for vio_read_buff */
282			char read_pos; / start of unfetched data in the
283			read buffer */
284			char read_end; / end of unfetched data */
285			int read_timeout; /* Timeout value (ms) for read ops. */
286			int write_timeout; /* Timeout value (ms) for write ops. */
287
288			/*
289			VIO vtable interface to be implemented by VIO's like SSL, Socket,
290			Named Pipe, etc.
291			*/
292
293			/*
294			viodelete is responsible for cleaning up the VIO object by freeing
295			internal buffers, closing descriptors, handles.
296			*/
297			void (viodelete)(Vio);
298			int (vioerrno)(Vio);
299			size_t (read)(Vio, uchar *, size_t);
300			size_t (write)(Vio, const uchar *, size_t);
301			int (timeout)(Vio, uint, my_bool);
302			int (viokeepalive)(Vio, my_bool);
303			int (fastsend)(Vio);
304			my_bool (peer_addr)(Vio, char , uint16, size_t);
305			void (in_addr)(Vio, struct sockaddr_storage*);
306			my_bool (should_retry)(Vio);
307			my_bool (was_timeout)(Vio);
308			/*
309			vioshutdown is resposnible to shutdown/close the channel, so that no
310			further communications can take place, however any related buffers,
311			descriptors, handles can remain valid after a shutdown.
312			*/
313			int (vioshutdown)(Vio);
314			my_bool (is_connected)(Vio);
315			my_bool (has_data) (Vio);
316			int (io_wait)(Vio, enum enum_vio_io_event, int);
317			my_bool (connect)(Vio, struct sockaddr *, socklen_t, int);
318			};
319
320	root	1.1	#endif
321	root	1.3
322	root	1.1	#endif /* vio_violite_h_ */