mysql_library_init() 用于初始化 C API 库。 语法 int mysql_library_init(int argc, char **argv, char **groups) argc 和argv 参数类似于 main() 的参数。针对常规(非嵌入式)客户端的应用程序的常见情况,如果服务器没有命令行参数,则 argc 可能为 0,调用通常写为 mysql_library_init(0, NULL, NUL...
int mysql_library_init(int argc, char **argv, char **groups) Description Call this function to initialize the MySQL client library before you call any other MySQL function, whether your application is a regular client program or uses the embedded server. If the application uses the embedded ...
int mysql_library_init(int argc, char **argv, char **groups) Description Call this function to initialize the MySQL client library before you call any other MySQL function. Note To avoid memory leaks after the application is done using the library (for example, after closing the connection...
mysql_library_init()和mysql_library_end()实际上是#define符号,这类符号使得它们等效于mysql_server_init()和mysql_server_end(),但其名称更清楚地指明,无论应用程序使用的是mysqlclient或mysqld库,启动或结束MySQL库时,应调用它们。对于早期的MySQL版本,可调用mysql_server_init()和mysql_server_end()取而代之...
如果mysql 是NULL 指针,则该函数分配、初始化并返回一个新对象。否则,只初始化对象并返回对象的地址。如果 mysql_init() 分配了一个新对象,则在调用 mysql_close() 关闭连接时将其释放。 在非多线程环境中,mysql_init() 根据需要自动调用 mysql_library_init()。但是,mysql_library_init() 在多线程环境中不...
如果愿意,可省略对mysql_library_init()的调用,这是因为,必要时,mysql_init()会自动调用它。 二、相关函数介绍 1.mysql_init() 1 MYSQL *STDCALL mysql_init(MYSQL *mysql); 描述:分配或初始化与mysql_real_connect()相适应的MYSQL对象,如果mysql是NULL指针,该函数将分配、初始化、并返回新对象。否则,将...
mysql_library_end()最终确定MySQL C API库。 mysql_library_init()初始化MySQL C API库。 mysql_list_dbs()返回与简单正则表达式匹配的数据库名称。 mysql_list_fields()返回与简单正则表达式匹配的字段名称。 mysql_list_processes()返回当前服务器线程的列表。
{"embedded","server","this_program_SERVER",(char*)NULL};intmain(void){if(mysql_library_init(sizeof(server_args)/sizeof(char*),server_args,server_groups)){fprintf(stderr,"could not initialize MySQL client library\n");exit(1);}/* Use any MySQL API functions here */mysql_library_end(...
5.4.45 mysql_library_init() intmysql_library_init(intargc,char**argv,char**groups) Description Call this function to initialize the MySQL client library before you call any other MySQL function. Note To avoid memory leaks after the application is done using the library (for example, after clo...
Description:I have a program working fine with MySQL v5.1.51 embedded server. Then I tried to link it against MySQL v5.5.6 rc . The program fails during library init : mysql_library_init() returns 1, and the error file contains : InnoDB: The InnoDB memory heap is disabled InnoDB: Mute...