1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
#ifndef _ma_pvio_h_
#define _ma_pvio_h_
#define cio_defined
#ifdef HAVE_TLS
#include <ma_tls.h>
#else
#define MARIADB_TLS void
#endif
/* CONC-492: Allow to build plugins outside of MariaDB Connector/C
source tree wnen ma_global.h was not included. */
#if !defined(_global_h) && !defined(MY_GLOBAL_INCLUDED)
typedef unsigned char uchar;
#endif
#define PVIO_SET_ERROR if (pvio->set_error) \
pvio->set_error
#define PVIO_READ_AHEAD_CACHE_SIZE 16384
#define PVIO_READ_AHEAD_CACHE_MIN_SIZE 2048
#define PVIO_EINTR_TRIES 2
struct st_ma_pvio_methods;
typedef struct st_ma_pvio_methods PVIO_METHODS;
#define IS_PVIO_ASYNC(a) \
((a)->mysql && (a)->mysql->options.extension && (a)->mysql->options.extension->async_context)
#define IS_PVIO_ASYNC_ACTIVE(a) \
(IS_PVIO_ASYNC(a)&& (a)->mysql->options.extension->async_context->active)
#define IS_MYSQL_ASYNC(a) \
((a)->options.extension && (a)->options.extension->async_context)
#define IS_MYSQL_ASYNC_ACTIVE(a) \
(IS_MYSQL_ASYNC(a)&& (a)->options.extension->async_context->active)
enum enum_pvio_timeout {
PVIO_CONNECT_TIMEOUT= 0,
PVIO_READ_TIMEOUT,
PVIO_WRITE_TIMEOUT
};
enum enum_pvio_io_event
{
VIO_IO_EVENT_READ,
VIO_IO_EVENT_WRITE,
VIO_IO_EVENT_CONNECT
};
enum enum_pvio_type {
PVIO_TYPE_UNIXSOCKET= 0,
PVIO_TYPE_SOCKET,
PVIO_TYPE_NAMEDPIPE,
PVIO_TYPE_SHAREDMEM,
};
enum enum_pvio_operation {
PVIO_READ= 0,
PVIO_WRITE=1
};
#define SHM_DEFAULT_NAME "MYSQL"
struct st_pvio_callback;
typedef struct st_pvio_callback {
void (*callback)(MYSQL *mysql, uchar *buffer, size_t size);
struct st_pvio_callback *next;
} PVIO_CALLBACK;
struct st_ma_pvio {
void *data;
/* read ahead cache */
uchar *cache;
uchar *cache_pos;
size_t cache_size;
enum enum_pvio_type type;
int timeout[3];
int ssl_type; /* todo: change to enum (ssl plugins) */
MARIADB_TLS *ctls;
MYSQL *mysql;
PVIO_METHODS *methods;
void (*set_error)(MYSQL *mysql, unsigned int error_nr, const char *sqlstate, const char *format, ...);
void (*callback)(MARIADB_PVIO *pvio, my_bool is_read, const uchar *buffer, size_t length);
size_t bytes_read;
size_t bytes_sent;
};
typedef struct st_ma_pvio_cinfo
{
const char *host;
const char *unix_socket;
int port;
enum enum_pvio_type type;
MYSQL *mysql;
} MA_PVIO_CINFO;
struct st_ma_pvio_methods
{
my_bool (*set_timeout)(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout);
int (*get_timeout)(MARIADB_PVIO *pvio, enum enum_pvio_timeout type);
ssize_t (*read)(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
ssize_t (*async_read)(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
ssize_t (*write)(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
ssize_t (*async_write)(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
int (*wait_io_or_timeout)(MARIADB_PVIO *pvio, my_bool is_read, int timeout);
int (*blocking)(MARIADB_PVIO *pvio, my_bool value, my_bool *old_value);
my_bool (*connect)(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo);
my_bool (*close)(MARIADB_PVIO *pvio);
int (*fast_send)(MARIADB_PVIO *pvio);
int (*keepalive)(MARIADB_PVIO *pvio);
my_bool (*get_handle)(MARIADB_PVIO *pvio, void *handle);
my_bool (*is_blocking)(MARIADB_PVIO *pvio);
my_bool (*is_alive)(MARIADB_PVIO *pvio);
my_bool (*has_data)(MARIADB_PVIO *pvio, ssize_t *data_len);
int(*shutdown)(MARIADB_PVIO *pvio);
};
/* Function prototypes */
MARIADB_PVIO *ma_pvio_init(MA_PVIO_CINFO *cinfo);
void ma_pvio_close(MARIADB_PVIO *pvio);
ssize_t ma_pvio_cache_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
ssize_t ma_pvio_read(MARIADB_PVIO *pvio, uchar *buffer, size_t length);
ssize_t ma_pvio_write(MARIADB_PVIO *pvio, const uchar *buffer, size_t length);
int ma_pvio_get_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type);
my_bool ma_pvio_set_timeout(MARIADB_PVIO *pvio, enum enum_pvio_timeout type, int timeout);
int ma_pvio_fast_send(MARIADB_PVIO *pvio);
int ma_pvio_keepalive(MARIADB_PVIO *pvio);
my_socket ma_pvio_get_socket(MARIADB_PVIO *pvio);
my_bool ma_pvio_is_blocking(MARIADB_PVIO *pvio);
my_bool ma_pvio_blocking(MARIADB_PVIO *pvio, my_bool block, my_bool *previous_mode);
my_bool ma_pvio_is_blocking(MARIADB_PVIO *pvio);
int ma_pvio_wait_io_or_timeout(MARIADB_PVIO *pvio, my_bool is_read, int timeout);
my_bool ma_pvio_connect(MARIADB_PVIO *pvio, MA_PVIO_CINFO *cinfo);
my_bool ma_pvio_is_alive(MARIADB_PVIO *pvio);
my_bool ma_pvio_get_handle(MARIADB_PVIO *pvio, void *handle);
my_bool ma_pvio_has_data(MARIADB_PVIO *pvio, ssize_t *length);
#endif /* _ma_pvio_h_ */
|
