MySQL 8.2.0
Source Code Documentation
transparent_file.h
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1/* Copyright (c) 2003, 2023, Oracle and/or its affiliates.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License, version 2.0,
5 as published by the Free Software Foundation.
6
7 This program is also distributed with certain software (including
8 but not limited to OpenSSL) that is licensed under separate terms,
9 as designated in a particular file or component or in included license
10 documentation. The authors of MySQL hereby grant you an additional
11 permission to link the program and your derivative works with the
12 separately licensed software that they have included with MySQL.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License, version 2.0, for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23#include <sys/stat.h>
24#include <sys/types.h>
25
26#include "my_dir.h"
27#include "my_inttypes.h"
28#include "my_io.h"
29
30typedef unsigned int PSI_memory_key;
31
33
36 uchar *buff; /* in-memory window to the file or mmaped area */
37 /* current window sizes */
41
42 public:
45
46 void init_buff(File filedes_arg);
47 uchar *ptr();
49 my_off_t end();
50 char get_value(my_off_t offset);
52};
Definition: transparent_file.h:34
uint buff_size
Definition: transparent_file.h:40
File filedes
Definition: transparent_file.h:35
void init_buff(File filedes_arg)
Definition: transparent_file.cc:38
Transparent_file()
Definition: transparent_file.cc:31
~Transparent_file()
Definition: transparent_file.cc:36
my_off_t end()
Definition: transparent_file.cc:51
uchar * buff
Definition: transparent_file.h:36
char get_value(my_off_t offset)
Definition: transparent_file.cc:73
uchar * ptr()
Definition: transparent_file.cc:47
my_off_t start()
Definition: transparent_file.cc:49
my_off_t upper_bound
Definition: transparent_file.h:39
my_off_t lower_bound
Definition: transparent_file.h:38
my_off_t read_next()
Definition: transparent_file.cc:53
unsigned int PSI_memory_key
Instrumented memory key.
Definition: psi_memory_bits.h:48
Some integer typedefs for easier portability.
ulonglong my_off_t
Definition: my_inttypes.h:71
unsigned char uchar
Definition: my_inttypes.h:51
Common #defines and includes for file and socket I/O.
int File
Definition: my_io_bits.h:50
PSI_memory_key csv_key_memory_Transparent_file
Definition: transparent_file.cc:29
unsigned int PSI_memory_key
Definition: transparent_file.h:30