Do I need to lock a table during a FLUSH when using VSDK C++ API in multi-threaded app?

[Matthew Jew]

On Aug 16, 2006, at 3:35 AM, Ivan Smahin wrote:

> Hello Matthew,
>
> Wednesday, August 16, 2006, 1:32:49 PM, you wrote:
>
>> On Aug 16, 2006, at 3:27 AM, Ivan Smahin wrote:
>
>>> Hello Matthew,
>>>
>>> Wednesday, August 16, 2006, 1:24:34 PM, you wrote:
>>>
>>>> On Aug 16, 2006, at 3:16 AM, Ivan Smahin wrote:
>>>
>>>>> Hello Matthew,
>>>>>
>>>>> Wednesday, August 16, 2006, 1:06:55 PM, you wrote:
>>>>>
>>>>>> My understanding was that there was some support for multiple
>>>>>> threads
>>>>>> in version 2 of Valentina. If not, what is the point of record
>>>>>> locking?
>>>>>
>>>>> Record  locking prevent to get access to locked records using
>>>>> different
>>>>> cursors.
>>>>>
>>>>>> What exactly has changed from version 1 to version 2 of VSDK
>>>>>> related
>>>>>> to multi-thread support? Anything? Version 1 required me to lock
>>>>>> the
>>>>>> entire Valentina engine, so that only one thread at a time  
>>>>>> could do
>>>>>> a Valentina call. Has this changed in version 2 or not? It was my
>>>>>> understanding
>>>>>> that it had. What is the story?
>>>>>
>>>>> This  task (and transactions) is still in process. Where have you
>>>>> read
>>>>> about multithreading in V2?
>>>>>
>>>
>>>> So is it still true that I must have a global lock/semaphore to
>>>> control access
>>>> to the entire Valentina engine? (So that only one thread at a time
>>>> can make
>>>> any calls to Valentina?)
>>>
>>> It will be 100% safe.
>>> We hope we will get the multi-threaded solution ASAP.
>>>
>
>> What does "It will be 100% safe" mean?
>
>> I asked if I still need to lock the entire engine, and I was hoping
>> for either "yes" or "no".
>
> Currently the answer is - Yes.
>

Okay... thank you for the information.

I will restore to my code the global semaphore/lock for the Valentina  
engine.
(I had been commenting it out when converting my applications from  
VSDK 1 to VSDK 2.)

Do you know when work will done to add multi-threading support?
Were there ANY improvements made to VSDK from 1 to 2 regarding multi- 
thread support?

- Matthew