my_init() initializes some global variables that MySQL needs. It also calls mysql_thread_init() for this thread.

It is necessary for my_init() to be called early in the initialization phase of a program's use of the MySQL client library. However, my_init() is automatically called by mysql_init(), mysql_library_init(), mysql_server_init(), and mysql_connect(). If you ensure that your program invokes one of those functions before any other MySQL calls, there is no need to invoke my_init() explicitly.

To access the prototype for my_init(), your program should include these header files:

#include <my_global.h>
#include <my_sys.h>

None.