[Sqlrelay-discussion] a couple of patches

[Renat S. <sr...@st...>]

Hello David and others!

I made a some of patches for sqlrelay and believe that you find them useful.

09_sessioncount_correction.patch - prevents sessioncount to go below zero

10_signal_handler_exit.patch - _exit() usage instead of exit() in signal 
handlers prevents double free on exit

11_status_more_info.patch - more status (totalconnections and 
sessioncount, semaphores)

12_scale_by_fork.patch - when scaler started with -fork option, it uses 
fork() instead of system() to open new connections. When connection 
died, scaler reap it with waitpid() and maintain connection counter by 
himself, so connection counter in shm does not affect scaler.

I made this patch because connection counter in shm always get corrupted 
after two or three days running sqlrelay under heavy load with periods 
of no load at all. I'll try to find out why this happen, but i believe 
that this patch will greatly increase the stability of sqlrelay with 
dynamic scaling.

-- 
Renat Sabitov   e-mail: sr...@st...
Stack Soft         jid: sr...@ja...