Dear All,
I am using mysql C API for my multi-thread program development (using
C++ to develop, Using Redhat 7.2 with 2.4.18-3 kernel version,
MySQL-devel-4.0.18-0). In some threads, I will open a new mysql database
connection to get the data. While sometime I have the problem in
mysql_real_connect() function. It hangs in the __libc_read() function
inside mysql_real_connect(). Here is the gdb bt result when the problem
occur:
#0 0x40217544 in __libc_read () from /lib/i686/libc.so.6
#1 0x400b25f8 in __DTOR_END__ () at eval.c:41
#2 0x400516da in vio_read () at OutQueue.cc:272
#3 0x40052210 in my_real_read () at OutQueue.cc:272
#4 0x400523c2 in my_net_read () at OutQueue.cc:272
#5 0x4003d64a in net_safe_read () at OutQueue.cc:272
#6 0x4003f614 in mysql_real_connect () at OutQueue.cc:272
#7 0x400355f8 in CBase::ConnectDB (this=0x826ce38) at Base.cc:81
Here is the code of ConnectDB:
int CBase::ConnectDB()
{
if (isConnected)
return 0;
if ( mysql_init(&connection) == NULL)
{
return -1;
}
if(
mysql_real_connect(&connection,MYSQL_HOST,MYSQL_USER,MYSQL_PASSWORD,MYSQ
L_DBNAME,0,NULL,0) == NULL )
{
return -2;
}
else
{
isConnected = true;
}
return 0;
}
Actually this problem (__libc_read() hangs) occurs not only in this part
of code, but also occur when I execute some query using mysql_query(). I
have searched around the web and the mailing list but can't find anyone
that has this problem. Can anyone help? Thank you
Regards,
Lung
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
