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(mysql.info) libmysqld-overview

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 22.1.1 Overview of the Embedded MySQL Server Library
 ----------------------------------------------------
 
 The embedded MySQL server library makes it possible to run a
 full-featured MySQL server inside a client application. The main
 benefits are increased speed and more simple management for embedded
 applications.
 
 The embedded server library is based on the client/server version of
 MySQL, which is written in C/C++. Consequently, the embedded server
 also is written in C/C++. There is no embedded server available in
 other languages.
 
 The API is identical for the embedded MySQL version and the
 client/server version. To change an old threaded application to use the
 embedded library, you normally only have to add calls to the following
 functions:
 
 *Function*         *When to Call*
 `mysql_server_init()'Should be called before any other MySQL function
                    is called, preferably early in the `main()'
                    function.
 `mysql_server_end()'Should be called before your program exits.
 `mysql_thread_init()'Should be called in each thread you create that
                    accesses MySQL.
 `mysql_thread_end()'Should be called before calling `pthread_exit()'
 
 Then you must link your code with `libmysqld.a' instead of
 `libmysqlclient.a'.
 
 The `mysql_server_XXX()' functions are also included in
 `libmysqlclient.a' to allow you to change between the embedded and the
 client/server version by just linking your application with the right
 library. See  mysql-server-init.
 
 One difference between the embedded server and the standalone server is
 that for the embedded server, authentication for connections is
 disabled by default. To use authentication for the embedded server,
 specify the -with-embedded-privilege-control option when you invoke
 `configure' to configure your MySQL distribution.
 
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