6月 10 2015

erlang_mysql_driver源码分析(三)

#mysql_recv:start_link

init(Host, Port, User, Password, Database, LogFun, Encoding, PoolId, Parent) ->
    case mysql_recv:start_link(Host, Port, LogFun, self()) of
	{ok, RecvPid, Sock} ->
	    case mysql_init(Sock, RecvPid, User, Password, LogFun) of
		{ok, Version} ->

上次在mysql_conn:init里面调用了mysql_recv:start_link,我们知道返回一个RecvPid接收进程的Pid和Sock套接字。mysql_recv:start_link过程如下

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6月 9 2015

erlang_mysql_driver　源码分析(二)

#mysql_conn:start
回到mysql:start_link这个最开始这个地方

LogFun1 = if LogFun == undefined -> fun log/4; true -> LogFun end,
   case mysql_conn:start(Host, Port, User, Password, Database, LogFun1,
		  Encoding, PoolId) of
{ok, ConnPid} ->