Win32 libpq and ecpg thread safety

Started by Qingqing Zhouover 20 years ago4 messagesgeneral
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#1Qingqing Zhou
zhouqq@cs.toronto.edu

Hi,

Is there a paragraph in the document talking about this? I've tried to look
into it, but can't find it. Can anybody point me to it?

Thanks,
Qingqing

#2Bruce Momjian
bruce@momjian.us
In reply to: Qingqing Zhou (#1)
Re: Win32 libpq and ecpg thread safety

Qingqing Zhou wrote:

Hi,

Is there a paragraph in the document talking about this? I've tried to look
into it, but can't find it. Can anybody point me to it?

Well, libpq has a section:

http://candle.pha.pa.us/main/writings/pgsql/sgml/libpq-threading.html

I don't see a thread section for ecpg, but I see several mentions of
threading in ecpg.sgml.

If you are asking about Win32-specific threading, there is no
documentation about it because it works just like Unix threading. At
least, that is what I am told.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073
#3Qingqing Zhou
zhouqq@cs.toronto.edu
In reply to: Bruce Momjian (#2)
Re: Win32 libpq and ecpg thread safety

On Wed, 26 Oct 2005, Bruce Momjian wrote:

If you are asking about Win32-specific threading, there is no
documentation about it because it works just like Unix threading. At
least, that is what I am told.

So both libpq and ecpg are thread-safe in Win32? I look into the code,
seems at least ecpg is not, and there is some possible improvements of
libpq (esp. PTHREAD_MUTEX_INITIALIZER).

Regards,
Qingqing

#4Bruce Momjian
bruce@momjian.us
In reply to: Qingqing Zhou (#3)
Re: Win32 libpq and ecpg thread safety

Qingqing Zhou wrote:

On Wed, 26 Oct 2005, Bruce Momjian wrote:

If you are asking about Win32-specific threading, there is no
documentation about it because it works just like Unix threading. At
least, that is what I am told.

So both libpq and ecpg are thread-safe in Win32? I look into the code,
seems at least ecpg is not, and there is some possible improvements of
libpq (esp. PTHREAD_MUTEX_INITIALIZER).

As far as I know, both are thread safe, except you have to read the
documention limitations for both of them. If you have improvements, we
would love to see them.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073