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Update PeterG's internals documentation per Monty's comments; 

minor changes only.
parent 0f20bfa2
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Docs/internals.texi
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......@@ -273,7 +273,7 @@ and then we read the rows in the sorted order into a row buffer
@itemize @bullet
@item
We are using @uref{http://www.bitkeeper.com/, BitKeeper} for source management.
We use @uref{http://www.bitkeeper.com/, BitKeeper} for source management.
@item
You should use the @strong{MySQL} 4.0 source for all developments.
......@@ -3135,9 +3135,9 @@ bdb -- The Berkeley Database table handler
@item
BitKeeper -- BitKeeper administration (not part of the source distribution)
@item
BUILD -- Some very often used build scripts
BUILD -- Frequently used build scripts
@item
Build-tools -- Build tools
Build-tools -- Build tools (not part of the source distribution)
@item
client -- Client library
@item
......@@ -3145,28 +3145,24 @@ cmd-line-utils -- Command-line utilities (libedit and readline)
@item
dbug -- Fred Fish's dbug library
@item
Docs -- Preliminary documents about internals and new modules
Docs -- Preliminary documents about internals and new modules; will eventually be moved to the mysqldoc repository
@item
extra -- Some minor standalone utility programs
@item
heap -- The HEAP table handler
@item
include -- Include (*.h) files
include -- Header (*.h) files for most libraries; includes all header files distributed with the MySQL binary distribution
@item
innobase -- The Innobase (InnoDB) table handler
@item
isam -- The ISAM (MySQL) table handler
libmysql -- For producing MySQL as a library (e.g. a Windows .DLL)
@item
libmysql -- For producing a thread-safe libmysql library
@item
libmysql_r -- Only one file, a makefile
libmysql_r -- For building a thread-safe libmysql library
@item
libmysqld -- The MySQL Server as an embeddable library
@item
man -- Some user-contributed manual pages
@item
merge -- The MERGE table handler (see Reference Manual section 7.2)
@item
myisam -- The MyISAM table handler
@item
myisammrg -- The MyISAM Merge table handler
......@@ -3177,7 +3173,7 @@ mysys -- MySQL system library (Low level routines for file access etc.)
@item
netware -- Files related to the Novell NetWare version of MySQL
@item
NEW-RPMS -- Directory to place RPMS while making a distribution
NEW-RPMS -- Directory to place RPMs while making a distribution
@item
os2 -- Routines for working with the OS/2 operating system
@item
......@@ -3189,25 +3185,25 @@ SCCS -- Source Code Control System (not part of source distribution)
@item
scripts -- SQL batches, e.g. mysqlbug and mysql_install_db
@item
sql -- Programs for handling SQL commands. The "core" of MySQL
sql -- Programs for handling SQL commands; the "core" of MySQL
@item
sql-bench -- The MySQL benchmarks
@item
SSL -- Secure Sockets Layer
SSL -- Secure Sockets Layer; includes an example certification one can use to test an SSL (secure) database connection
@item
strings -- Library for C string routines, e.g. atof, strchr
@item
support-files -- Files used to build MySQL on different systems
@item
tests -- Tests in Perl
tests -- Tests in Perl and in C
@item
tools -- mysqlmanager.c (under development, not yet useful)
tools -- mysqlmanager.c (tool under development, not yet useful)
@item
VC++Files -- Includes this entire directory, repeated for VC++ (Windows) use
@item
vio -- Virtual I/O Library
@item
zlib -- data compression library, used on Windows
zlib -- Data compression library, used on Windows
@end itemize
@subsection bdb
......@@ -3231,19 +3227,21 @@ in this document.
BitKeeper administration.
@*@*
This directory may be present if you downloaded the MySQL source using
Bitkeeper administration is not part of the source distribution. This
directory may be present if you downloaded the MySQL source using
BitKeeper rather than via the mysql.com site. The files in the
BitKeeper directory are for maintenance purposes only -- they are not
part of the MySQL package.
@*@*
The MySQL Reference Manual explains how to use Bitkeeper to get the
MySQL source.
MySQL source. Please see @url{http://www.mysql.com/doc/en/Installing_source_tree.html}
for more information.
@*@*
@subsection BUILD
Build switches.
Frequently used build scripts.
@*@*
This directory contains the build switches for compilation on various
......@@ -3266,11 +3264,11 @@ solaris
Build tools.
@*@*
This directory contains batch files for extracting, making
directories, and making programs from source files. There are
several subdirectories with different scripts -- for building
Linux executables, for compiling, for performing all build steps,
and so on.
Build-tools is not part of the source distribution. This directory
contains batch files for extracting, making directories, and making
programs from source files. There are several subdirectories with
different scripts -- for building Linux executables, for compiling,
for performing all build steps, and so on.
@*@*
@subsection client
......@@ -3302,7 +3300,7 @@ mysqladmin.c -- maintenance of MYSQL databases
@item
mysqlcheck.c -- check all databases, check connect, etc.
@item
mysqldump.c -- dump table's contents as SQL statements
mysqldump.c -- dump table's contents as SQL statements, suitable to backup a MySQL database
@item
mysqlimport.c -- import text files in different formats into tables
@item
......@@ -3314,7 +3312,7 @@ mysqlshow.c -- show databases, tables or columns
@item
mysqltest.c -- test program used by the mysql-test suite, mysql-test-run
@item
password.c -- password checking routines
password.c -- password checking routines (version 4.1 and up)
@item
select_test.c -- test that a select is possible
@item
......@@ -3328,15 +3326,14 @@ thread_test.c -- test that threading is possible
@subsection cmd-line-utils
Command-line utilities.
Command-line utilities (libedit and readline).
@*@*
There are two subdirectories: \readline and \libedit. All the files
here are "non-MYSQL" files, in the sense that MySQL AB didn't produce
here are "non-MySQL" files, in the sense that MySQL AB didn't produce
them, it just uses them. It should be unnecessary to study the
programs in these files unless
you are writing or debugging a tty-like client for MySQL, such as
mysql.exe.
programs in these files unless you are writing or debugging a tty-like
client for MySQL, such as mysql.exe.
@*@*
The \readline subdirectory contains the files of the GNU Readline
......@@ -3442,14 +3439,15 @@ sanity.c -- Declaration of a variable
@subsection Docs
Preliminary documents about internals and new modules.
Preliminary documents about internals and new modules, which will eventually
be moved to the mysqldoc repository.
@*@*
This directory doesn't have much at present that's very useful to the
student, but the plan is that some documentation related to the source
files and the internal workings of MySQL, including perhaps some
documentation from developers themselves, will be placed here. Some of
these files will eventually be moved to the MySQL documentation repository.
documentation from developers themselves, will be placed here. Files in
this directory will eventually be moved to the MySQL documentation repository.
@*@*
These sub-directories are part of this directory:
......@@ -3480,16 +3478,16 @@ has any importance -- internals.texi -- The "MySQL Internals"
document.
@*@*
Despite the name, internals.texi is not really much of a description
of MySQL internals. However, there is some useful description of the
functions in the mysys directory (see below), and of the structure of
client/server messages (doubtless very useful for people who want to
make their own JDBC drivers, or just sniff).
Despite the name, internals.texi is not yet much of a description of MySQL
internals although work is in progress to make it so. However, there is
some useful description of the functions in the mysys directory (see below),
and of the structure of client/server messages (doubtless very useful for
eople who want to make their own JDBC drivers, or just sniff).
@*@*
@subsection extra
Eight minor standalone utility programs.
Some minor standalone utility programs.
@*@*
These programs are all standalone utilities, that is, they have
......@@ -3498,56 +3496,20 @@ MySQL server needs or produces. Most are unimportant. They are as
follows:
@itemize @bullet
@item
my_print_defaults.c -- print all parameters in a default file
my_print_defaults.c -- print parameters from my.ini files. Can also be used in scripts to enable processing of my.ini files.
@item
mysql_install.c -- startup: install MySQL server
@item
mysql_waitpid.c -- wait for a program to terminate
mysql_waitpid.c -- wait for a program to terminate. Useful for shell scripts when one needs to wait until a process terminates.
@item
perror.c -- "print error" -- given error number, display message
@item
replace.c -- replace strings in text files or pipe
@item
resolve_stack_dump.c -- show symbolic info from a stack dump
resolve_stack_dump.c -- show symbolic information from a MySQL stack dump, normally found in the mysql.err file
@item
resolveip.c -- convert an IP address to a hostname, or vice versa
@end itemize
@*@*
@subsection fs
File System.
@*@*
Here the word "File System" does not refer to the mere idea of a
directory of files on a disk drive, but to object-based access. The
concept has been compared with Oracle's Internet File System (iFS).
@*@*
The original developer of the files on this directory is Tonu Samuel,
a former MySQL AB employee. Here is a quote (somewhat edited) from
Tonu Samuel's web page (http://no.spam.ee/~tonu/index.php):
"Question: What is it?
Answer: Actually this is not filesystem in common terms. MySQL FS
makes it possible to make SQL tables and some functions available over
a filesystem. MySQL does not require disk space, it uses an ordinary
MySQL daemon to store data."
The descriptions imply that this is a development project.
@*@*
There are four program files in the directory:
@itemize @bullet
@item
database.c -- "emulate filesystem behaviour on top of SQL database"
@item
libmysqlfs.c -- Search/replace, show-functions, and parse routines
@item
mysqlcorbafs.c -- Connection with the CORBA "Object Request Broker"
@item
mysqlcorbafs_test.c -- Utility to test the working of mysqlcorbafs.c
@*@*
@subsection heap
The HEAP table handler.
......@@ -3622,7 +3584,8 @@ for a \myisam\mi_cache.c equivalent (to cache reads) or a
@subsection include
Include (*.h) files.
Header (*.h) files for most libraries; includes all header files distributed
with the MySQL binary distribution.
@*@*
These files may be included in C program files. Note that each
......@@ -3637,7 +3600,7 @@ rijndael.h. Looking further, you'll find that rijndael.h is also
included in other places: by my_aes.c and my_aes.h.
@*@*
The include directory contains 51 *.h (include) files.
The include directory contains 51 *.h (header) files.
@*@*
@subsection innobase
......@@ -3649,100 +3612,6 @@ A full description of these files can be found elsewhere in this
document.
@*@*
@subsection isam
The ISAM table handler.
@*@*
The C files in this directory are:
@itemize @bullet
@item
_cache.c -- for reading records from a cache
@item
changed.c -- a single routine for setting a "changed" flag (very
short)
@item
close.c -- close database
@item
create.c -- create a table
@item
_dbug.c -- support routines for use with "dbug" (see the \dbug
description)
@item
delete.c -- delete a row
@item
_dynrec.c -- functions to handle space-packed records and blobs
@item
extra.c -- setting options and buffer sizes when optimizing table
handling
@item
info.c -- Information about database status
@item
_key.c -- for handling keys
@item
_locking.c -- lock database
@item
log.c -- save commands in log file which myisamlog program can read
@item
_packrec.c -- compress records
@item
_page.c -- read and write pages containing keys
@item
panic.c -- the mi_panic routine, probably for sudden shutdowns
@item
range.c -- approximate count of how many records lie between two
keys
@item
rfirst.c -- read first row through a specific key (very short)
@item
rkey.c -- read a record using a key
@item
rlast.c -- read last row with same key as previously-read row
@item
rnext.c -- read next row with same key as previously-read row
@item
rprev.c -- read previous row with same key as previously-read row
@item
rrnd.c -- read a row based on position
@item
rsame.c -- find current row using positional read or key-based read
@item
rsamepos.c -- positional read
@item
_search.c -- key-handling functions
@item
static.c -- static variables (very short)
@item
_statrec.c -- functions to handle fixed-length records
@item
test1.c -- testing basic functions
@item
test2.c -- testing database and storing results
@item
test3.c -- testing locking
@item
update.c -- update an existing row
@item
write.c -- insert a new row
@item
pack_isam.c -- pack isam file (NOTE TO SELF ?? equivalent to
\myisam\myisampack.c)
@end itemize
@*@*
Except for one minor C file (pack_isam.c) every program in the ISAM
directory has a counterpart in the MyISAM directory. For example
\isam\update.c corresponds to \myisam\mi_update.c. However, the
reverse is not true -- there are many files in the MyISAM directory
which have no counterpart in the ISAM directory.
@*@*
The reason is simple -- it's because the ISAM files are becoming
obsolete. When MySQL programmers add new features, they add them for
MyISAM only. The student can therefore ignore all files in this
directory and study the MyISAM programs instead.
@*@*
@subsection libmysql
The MySQL Library, Part 1.
......@@ -3772,7 +3641,7 @@ errmsg.c -- English error messages, compare \mysys\errors.c
@item
get_password.c -- get password
@item
libmysql.c -- the main "packet-sending emulation" program
libmysql.c -- the code that implements the MySQL API, i.e. the functions a client that wants to connect to MySQL will call
@item
manager.c -- initialize/connect/fetch with MySQL manager
@end itemize
......@@ -3784,7 +3653,7 @@ The MySQL Library, Part 2.
@*@*
This is a continuation of the libmysql directory. There is only one
file here:
file here, used to build a thread-safe libmysql library:
@itemize @bullet
@item
makefile.am
......@@ -3796,8 +3665,9 @@ makefile.am
The MySQL library, Part 3.
@*@*
This is a continuation of the libmysql directory. The program files on
this directory are:
This is a continuation of the libmysql directory and contains the MySQL
Server as an embeddable library. The program files on this directory
are:
@itemize @bullet
@item
libmysqld.c -- The called side, compare the mysqld.exe source
......@@ -3808,73 +3678,13 @@ lib_vio.c -- Emulate the vio directory's communication buffer
@subsection man
Manual pages.
Some user-contributed manual pages
@*@*
These are not the actual "man" (manual) pages, they are switches for
the production.
@*@*
@subsection merge
The MERGE table handler.
@*@*
For a description of the MERGE table handler, see the MySQL Reference
Manual, section 7.2.
@*@*
You'll notice that there seem to be several directories with
similar-sounding names of C files in them. That's because the MySQL
table handlers are all quite similar.
@*@*
The related directories are:
@itemize @bullet
@item
\isam -- for ISAM
@item
\myisam -- for MyISAM
@item
\merge -- for ISAM MERGE (mostly call functions in \isam programs)
@item
\myisammrg -- for MyISAM MERGE (mostly call functions in \myisam
programs)
@end itemize
@*@*
To avoid duplication, only the \myisam program versions are discussed.
@*@*
The C programs in this (merge) directory are:
@itemize @bullet
@item
mrg_close.c -- compare \isam's close.c
@item
mrg_create.c -- "" create.c
@item
mrg_delete.c -- "" delete.c
@item
mrg_extra.c -- "" extra.c
@item
mrg_info.c -- "" info.c
@item
mrg_locking.c -- "" locking.c
@item
mrg_open.c -- "" open.c
@item
mrg_panic.c -- "" panic.c
@item
mrg_rrnd.c -- "" rrnd.c
@item
mrg_rsame.c -- "" rsame.c
@item
mrg_static.c -- "" static.c
@item
mrg_update.c -- "" update.c
@end itemize
@*@*
@subsection myisam
The MyISAM table handler.
......@@ -3910,10 +3720,9 @@ programs. They are:
@item
mi_cache.c -- for reading records from a cache
@item
mi_changed.c -- a single routine for setting a "changed" flag (very
short)
mi_changed.c -- a single routine for setting a "changed" flag (very short)
@item
mi_check.c -- doesn't just do checks, ?? for myisamchk program?
mi_check.c -- for checking and repairing tables. Used by the myisamchk program and by the MySQL server.
@item
mi_checksum.c -- calculates a checksum for a row
@item
......@@ -3921,8 +3730,7 @@ mi_close.c -- close database
@item
mi_create.c -- create a table
@item
mi_dbug.c -- support routines for use with "dbug" (see \dbug
description)
mi_dbug.c -- support routines for use with "dbug" (see \dbug description)
@item
mi_delete.c -- delete a row
@item
......@@ -3940,7 +3748,7 @@ mi_key.c -- for handling keys
@item
mi_locking.c -- lock database
@item
mi_log.c -- save commands in log file which myisamlog program can read
mi_log.c -- save commands in a log file which myisamlog program can read. Can be used to exactly replay a set of changes to a table.
@item
mi_open.c -- open database
@item
......@@ -3968,8 +3776,7 @@ mi_rprev.c -- read previous row with same key as previously-read row
@item
mi_rrnd.c -- read a row based on position
@item
mi_rsame.c -- find current row using positional read or key-based
read
mi_rsame.c -- find current row using positional read or key-based read
@item
mi_rsamepos.c -- positional read
@item
......@@ -4104,7 +3911,7 @@ tests
@subsection mysys
MySQL system library (Low level routines for file access etc.).
MySQL system library. Low level routines for file access and so on.
@*@*
There are 115 *.c programs in this directory:
......@@ -4112,13 +3919,11 @@ There are 115 *.c programs in this directory:
@item
array.c -- Dynamic array handling
@item
charset.c -- Using dynamic character sets, set default character
set, ...
charset.c -- Using dynamic character sets, set default character set, ...
@item
charset2html.c -- Checking what character set a browser is using
charset2html.c -- Check what character set a browser is using
@item
checksum.c -- Calculate checksum for a memory block, used for
pack_isam
checksum.c -- Calculate checksum for a memory block, used for pack_isam
@item
default.c -- Find defaults from *.cnf or *.ini files
@item
......@@ -4128,13 +3933,11 @@ hash.c -- Hash search/compare/free functions "for saving keys"
@item
list.c -- Double-linked lists
@item
make-conf.c -- "Make a charset .conf file out of a ctype-charset.c
file"
make-conf.c -- "Make a charset .conf file out of a ctype-charset.c file"
@item
md5.c -- MD5 ("Message Digest 5") algorithm from RSA Data Security
@item
mf_brkhant.c -- Prevent user from doing a Break during critical
execution
mf_brkhant.c -- Prevent user from doing a Break during critical execution (not used in MySQL; can be used by standalone MyISAM applications)
@item
mf_cache.c -- "Open a temporary file and cache it with io_cache"
@item
......@@ -4160,7 +3963,7 @@ mf_path.c -- Determine where a program can find its files
@item
mf_qsort.c -- Quicksort
@item
mf_qsort2.c -- Quicksort, part 2
mf_qsort2.c -- Quicksort, part 2 (allows the passing of an extra argument to the sort-compare routine)
@item
mf_radix.c -- Radix sort
@item
......@@ -4168,8 +3971,7 @@ mf_same.c -- Determine whether filenames are the same
@item
mf_sort.c -- Sort with choice of Quicksort or Radix sort
@item
mf_soundex.c -- Soundex algorithm derived from EDN Nov. 14, 1985
(pg. 36)
mf_soundex.c -- Soundex algorithm derived from EDN Nov. 14, 1985 (pg. 36)
@item
mf_strip.c -- Strip trail spaces from a string
@item
......@@ -4300,8 +4102,7 @@ my_rename.c -- Rename without delete
@item
my_seek.c -- Seek, i.e. point to a spot within a file
@item
my_semaphore.c -- Semaphore routines, for use on OS that doesn't
support them
my_semaphore.c -- Semaphore routines, for use on OS that doesn't support them
@item
my_sleep.c -- Wait n microseconds
@item
......@@ -4313,8 +4114,7 @@ my_symlink2.c -- Part 2 of my_symlink.c
@item
my_tempnam.c -- Obsolete temporary-filename routine used by ISAM table handler
@item
my_thr_init.c -- initialize/allocate "all mysys & debug thread
variables"
my_thr_init.c -- initialize/allocate "all mysys & debug thread variables"
@item
my_wincond.c -- Windows-specific: emulate Posix conditions
@item
......@@ -4330,23 +4130,19 @@ queues.c -- Handle priority queues as in Robert Sedgewick's book
@item
raid2.c -- RAID support (the true implementation is in raid.cc)
@item
rijndael.c -- "Optimised ANSI C code for the Rijndael cipher (now
AES")
rijndael.c -- "Optimised ANSI C code for the Rijndael cipher (now AES")
@item
safemalloc.c -- A version of the standard malloc() with safety
checking
safemalloc.c -- A version of the standard malloc() with safety checking
@item
sha1.c -- Implementation of Secure Hashing Algorithm 1
@item
string.c -- Initialize/append/free dynamically-sized strings
string.c -- Initialize/append/free dynamically-sized strings; see also sql_string.cc in the /sql directory
@item
testhash.c -- Standalone program: test the hash library routines
@item
test_charset.c -- Standalone program: display character set
information
test_charset.c -- Standalone program: display character set information
@item
test_dir.c -- Standalone program: placeholder for "test all
functions" idea
test_dir.c -- Standalone program: placeholder for "test all functions" idea
@item
test_fn.c -- Standalone program: apparently tests a function
@item
......@@ -4358,18 +4154,17 @@ thr_lock.c -- "Read and write locks for Posix threads"
@item
thr_mutex.c -- A wrapper for mutex functions
@item
thr_rwlock.c -- Synchronizes the readers' thread locks with the
writer's lock
thr_rwlock.c -- Synchronizes the readers' thread locks with the writer's lock
@item
tree.c -- Initialize/search/free binary trees
@item
typelib.c -- Determine what type a field has
typelib.c -- Find a string in a set of strings; returns the offset to the string found
@end itemize
@*@*
You can find documentation for the main functions in these files
elsewhere in this document.
For example, the main functions in my_getwd.c are described thus:
elsewhere in this document. For example, the main functions in my_getwd.c
are described thus:
@*@*
@example
......@@ -4425,7 +4220,7 @@ NetWare AMP" at:
@subsection NEW-RPMS
New "RPM Package Manager" files.
Directory to place RPMs while making a distribution.
@*@*
This directory is not part of the Windows distribution. It is
......@@ -4460,7 +4255,7 @@ there have been no updates for MySQL 4.0 for this section.
@subsection pstack
Process stack display.
Process stack display (not currently used).
@*@*
This is a set of publicly-available debugging aids which all do pretty
......@@ -4478,7 +4273,7 @@ and it crashes.
@subsection regex
Regular Expression library for support of REGEXP function.
Henry Spencer's Regular Expression library for support of REGEXP function.
@*@*
This is the copyrighted product of Henry Spencer from the University
......@@ -4504,7 +4299,7 @@ This program calls the 'regcomp' function, which is the entry point in
@subsection SCCS
Source Code Control System.
Source Code Control System (not part of source distribution).
@*@*
You will see this directory if and only if you used BitKeeper for
......@@ -4514,7 +4309,7 @@ administration and are not of interest to application programmers.
@subsection scripts
SQL batches, e.g. for converting msql to MySQL.
SQL batches, e.g. mysqlbug and mysql_install_db.
@*@*
The *.sh filename extension stands for "shell script". Linux
......@@ -4529,7 +4324,7 @@ fill_help_tables.sh -- Create help-information tables and insert
@item
make_binary_distribution.sh -- Get configure information, make, produce tar
@item
msql2mysql.sh -- Convert mSQL programs and scripts to MySQL, partly
msql2mysql.sh -- Convert (partly) mSQL programs and scripts to MySQL
@item
mysqlbug.sh -- Create a bug report and mail it
@item
......@@ -4553,15 +4348,14 @@ mysql_find_rows.sh -- Search for queries containing <regexp>
@item
mysql_fix_extensions.sh -- Renames some file extensions, not recommended
@item
mysql_fix_privilege_tables.sh -- Fix mysql.user etc. if upgrading to MySQL 3.23.14+
mysql_fix_privilege_tables.sh -- Fix mysql.user etc. when upgrading. Can be safely run during any upgrade to get the newest
MySQL privilege tables
@item
mysql_install_db.sh -- Create privilege tables and func table
@item
mysql_secure_installation.sh -- Disallow remote root login,
eliminate test, etc.
mysql_secure_installation.sh -- Disallow remote root login, eliminate test, etc.
@item
mysql_setpermission.sh -- Aid to add users or databases, sets
privileges
mysql_setpermission.sh -- Aid to add users or databases, sets privileges
@item
mysql_tableinfo.sh -- Puts info re MySQL tables into a MySQL table
@item
......@@ -4577,15 +4371,14 @@ Programs for handling SQL commands. The "core" of MySQL.
These are the .c and .cc files in the sql directory:
@itemize @bullet
@item
cache_manager.cc -- manages a number of blocks
@item
convert.cc -- convert tables between different character sets
@item
derror.cc -- read language-dependent message file
@item
des_key_file.cc -- load DES keys from plaintext file
@item
field.cc -- "implement classes defined in field.h" (long)
field.cc -- "implement classes defined in field.h" (long); defines all storage methods MySQL uses to store field information
into records that are then passed to handlers
@item
field_conv.cc -- functions to copy data between fields
@item
......@@ -4593,13 +4386,13 @@ filesort.cc -- sort a result set, using memory or temporary files
@item
frm_crypt.cc -- contains only one short function: get_crypt_for_frm
@item
gen_lex_hash.cc -- Knuth's algorithm from Vol 3 Sorting and Searching, Chapter 6.3
gen_lex_hash.cc -- Knuth's algorithm from Vol 3 Sorting and Searching, Chapter 6.3; used to search for SQL keywords in a query
@item
gstream.cc -- GTextReadStream, used to read GIS objects
@item
handler.cc -- handler-calling functions
@item
hash_filo.cc -- static-sized hash tables
hash_filo.cc -- static-sized hash tables, used to store info like hostname -> ip tables in a FIFO manner
@item
ha_berkeley.cc -- Handler: BDB
@item
......@@ -4641,7 +4434,7 @@ item_timefunc.cc -- Date/time functions, e.g. week of year
@item
item_uniq.cc -- Empty file, here for compatibility reasons
@item
key.cc -- Functions to handle keys and fields in forms
key.cc -- Functions to create keys from records and compare a key to a key in a record
@item
lock.cc -- Locks
@item
......@@ -4653,11 +4446,11 @@ matherr.c -- Handling overflow, underflow, etc.
@item
mf_iocache.cc -- Caching of (sequential) reads and writes
@item
mini_client.cc -- Client included in server for server-server messaging
mini_client.cc -- Client included in server for server-server messaging; used by the replication code
@item
mysqld.cc -- Source of mysqld.exe
mysqld.cc -- Source of mysqld.exe; includes the main() program that starts mysqld, handling of signals and connections
@item
my_lock.c -- Lock part of a file
my_lock.c -- Lock part of a file (like /mysys/my_lock.c, but with timeout handling for threads)
@item
net_serv.cc -- Read/write of packets on a network socket
@item
......@@ -4671,9 +4464,9 @@ opt_sum.cc -- Optimize functions in presence of (implied) GROUP BY
@item
password.c -- Password checking
@item
procedure.cc -- Procedure
procedure.cc -- Procedure interface, as used in SELECT * FROM Table_name PROCEDURE ANALYSE
@item
protocol.cc -- Low level functions for storing data to be sent to client
protocol.cc -- Low level functions for PACKING data that is sent to client; actual sending done with net_serv.cc
@item
records.cc -- Functions for easy reading of records, possible through a cache
@item
......@@ -4685,15 +4478,15 @@ slave.cc -- Procedures for a slave in a master/slave (replication) relation
@item
spatial.cc -- Geometry stuff (lines, points, etc.)
@item
sql_acl.cc -- Functions related to ACL security
sql_acl.cc -- Functions related to ACL security; checks, stores, retrieves, and deletes MySQL user level privileges
@item
sql_analyse.cc -- Analyse an input string (?)
sql_analyse.cc -- Implements the PROCEDURE analyse, which analyses a query result and returns the 'optimal' data type for each result column
@item
sql_base.cc -- Basic functions needed by many modules
@item
sql_cache.cc -- SQL query cache, with long comments about how caching works
@item
sql_class.cc -- SQL class
sql_class.cc -- SQL class; implements the SQL base classes, of which THD (THREAD object) is the most important
@item
sql_crypt.cc -- Encode / decode, very short
@item
......@@ -4707,26 +4500,26 @@ sql_do.cc -- The DO statement
@item
sql_error.cc -- Errors and warnings
@item
sql_handler.cc -- Direct access to ISAM
sql_handler.cc -- Implements the HANDLER interface, which gives direct access to rows in MyISAM and InnoDB
@item
sql_help.cc -- The HELP statement (if there is one?)
sql_help.cc -- The HELP statement
@item
sql_insert.cc -- The INSERT statement
@item
sql_lex.cc -- Related to lex or yacc
sql_lex.cc -- Does lexical analysis of a query; i.e. breaks a query string into pieces and determines the basic type (number,
string, keyword, etc.) of each piece
@item
sql_list.cc -- Only list_node_end_of_list, short
sql_list.cc -- Only list_node_end_of_list, short (the rest of the list class is implemented in sql_list.h)
@item
sql_load.cc -- The LOAD DATA statement?
sql_load.cc -- The LOAD DATA statement
@item
sql_map.cc -- Memory-mapped files?
sql_map.cc -- Memory-mapped files (not yet in use)
@item
sql_manager.cc -- Maintenance tasks, e.g. flushing the buffers
periodically
sql_manager.cc -- Maintenance tasks, e.g. flushing the buffers periodically
@item
sql_olap.cc -- ROLLUP
@item
sql_parse.cc -- Parse an SQL statement
sql_parse.cc -- Parse an SQL statement; do initial checks and then jump to the function that should execute the statement
@item
sql_prepare.cc -- Prepare an SQL statement
@item
......@@ -4738,8 +4531,7 @@ sql_select.cc -- Select and join optimisation
@item
sql_show.cc -- The SHOW statement
@item
sql_string.cc -- String functions: alloc, realloc, copy, convert,
etc.
sql_string.cc -- String functions: alloc, realloc, copy, convert, etc.
@item
sql_table.cc -- The DROP TABLE and ALTER TABLE statements
@item
......@@ -4751,11 +4543,11 @@ sql_union.cc -- The UNION operator
@item
sql_update.cc -- The UPDATE statement
@item
stacktrace.c -- Display stack trace (Linux/Intel only?)
stacktrace.c -- Display stack trace (Linux/Intel only)
@item
table.cc -- Table metadata retrieval, mostly
table.cc -- Table metadata retrieval; read the table definition from a .frm file and store it in a TABLE object
@item
thr_malloc.cc -- Mallocs used in threads
thr_malloc.cc -- Thread-safe interface to /mysys/my_alloc.c
@item
time.cc -- Date and time functions
@item
......@@ -4763,7 +4555,7 @@ udf_example.cc -- Example file of user-defined functions
@item
uniques.cc -- Function to handle quick removal of duplicates
@item
unireg.cc -- Create a unireg form file from a FIELD and field-info struct
unireg.cc -- Create a unireg form file (.frm) from a FIELD and field-info struct
@end itemize
@*@*
......@@ -4781,13 +4573,11 @@ available all the material necessary to reproduce all the tests.
There are five subdirectories and sub-subdirectories:
@itemize @bullet
@item
\Comments -- Comments about results from tests of Access, Adabas,
etc.
\Comments -- Comments about results from tests of Access, Adabas, etc.
@item
\Data\ATIS -- .txt files containing input data for the "ATIS" tests
@item
\Data\Wisconsin -- .txt files containing input data for the
"Wisconsin" tests
\Data\Wisconsin -- .txt files containing input data for the "Wisconsin" tests
@item
\Results -- old test results
@item
......@@ -4807,7 +4597,8 @@ There is one README file and one TODO file.
@subsection SSL
Secure Sockets Layer.
Secure Sockets Layer; includes an example certification one can use
test an SSL (secure) database connection.
@*@*
This isn't a code directory. It contains a short note from Tonu Samuel
......@@ -4885,7 +4676,7 @@ r_strinstr.c -- see if one string is within another
@item
str2int.c -- convert string to integer
@item
strappend.c -- append one string to another
strappend.c -- fill up a string to n characters
@item
strcat.c -- concatenate strings
@item
......@@ -4905,11 +4696,11 @@ strinstr.c -- find string within string
@item
strlen.c -- return length of string in bytes
@item
strmake.c -- move n characters, or move till end
strmake.c -- create new string from old string with fixed length, append end \0 if needed
@item
strmov.c -- move source to dest and return pointer to end
@item
strnlen.c -- return length of string, or return n
strnlen.c -- return min(length of string, n)
@item
strnmov.c -- move source to dest for source size, or for n bytes
@item
......@@ -4933,9 +4724,9 @@ strxnmov.c -- like strxmov.c but with a maximum length n
@item
str_test.c -- test of all the string functions encoded in assembler
@item
udiv.c -- unsigned long divide
udiv.c -- unsigned long divide, for operating systems that don't support these
@item
xml.c -- read and parse XML strings
xml.c -- read and parse XML strings; used to read character definition information stored in /sql/share/charsets
@end itemize
@*@*
......@@ -4947,17 +4738,19 @@ members of the Intel processor family.
@subsection support-files
Support files.
Files used to build MySQL on different systems.
@*@*
The files here are for building ("making") MySQL given a package
manager, compiler, linker, and other build tools. The support files
provide instructions and switches for the build processes.
provide instructions and switches for the build processes. They
include example my.cnf files one can use as a default setup for
MySQL.
@*@*
@subsection tests
Tests in Perl.
Tests in Perl and in C.
@*@*
These are tests that were run once to check for bugs in various
......@@ -4972,7 +4765,8 @@ Tools -- well, actually, one tool.
The only file is:
@itemize @bullet
@item
mysqlmanager.c -- A "server management daemon" by Sasha Pachev
mysqlmanager.c -- A "server management daemon" by Sasha Pachev. This
is a tool under development and is not yet useful.
@end itemize
@*@*
......@@ -4984,7 +4778,12 @@ Visual C++ Files.
Includes this entire directory, repeated for VC++ (Windows) use.
@*@*
VC++Files has subdirectories which are copies of the main directories.
VC++Files includes a complete environment to compile MySQL with the VC++
compiler. To use it, just copy the files on this directory; the make_win_src_distribution.sh
script uses these files to create a Windows source installation.
@*@*
This directory has subdirectories which are copies of the main directories.
For example there is a subdirectory \VC++Files\heap, which has the
same files as \heap. So for a description of the files in
\VC++Files\heap, see the description of the files in \heap. The same
......@@ -5003,7 +4802,7 @@ comp_err -- (nearly empty)
@item
contrib -- (nearly empty)
@item
InstallShield script files
InstallShield -- script files
@item
isamchk -- (nearly empty)
@item
......@@ -5047,6 +4846,12 @@ winmysqladmin -- the winmysqladmin.exe source. machine-generated?
@end itemize
@*@*
The "nearly empty" subdirectories noted above (e.g. comp_err and isamchk)
are needed because VC++ requires one directory per project (i.e. executable).
We are trying to keep to the MySQL standard source layout and compile only
to different directories.
@*@*
@subsection vio
Virtual I/O Library.
......@@ -5094,7 +4899,12 @@ obsolete.
@subsection zlib
Data compression library.
Data compression library, used on Windows.
@*@*
zlib is a data compression library used to support the compressed
protocol and the COMPRESS/UNCOMPRESS functions under Windows.
On Unix, MySQL uses the system libgz.a library for this purpose.
@*@*
Zlib -- which presumably stands for "Zip Library" -- is not a MySQL
......
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