Re: Getting the jBase DP (data pointer) of the current session when using pure C

[Peter Falson]

Still not entirely sure why though. If python is the starting point and you get 
a dp from jbase_getdpEX (you cant avoid at least one session) you could pass 
the dp down the chain. 

Sent from my iPhone

> On Mar 25, 2020, at 10:15 AM, Igor Osmolovskiy  wrote:
> 
> 
> Right. If a jBASE routine is the starting point - no new session is created.
> 
> But if python is the starting point then looks like we cannot avoid an 
> additional session
> 
> среда, 25 марта 2020 г., 14:25:33 UTC пользователь pfalson написал:
>> Not following. If your starting point is jsh or LOGTO or a jBASE program you 
>> should be able to call a python routine and convert the dp to a pylong and 
>> pass it down for reuse.
>> 
>> Sent from my iPhone
>> 
 On Mar 25, 2020, at 7:14 AM, Igor Osmolovskiy  wrote:
 
>>> 
>>> Thanks Peter for your help
>>> 
>>> Coming back to the initial question whether a DP could be initialized 
>>> without a new session - looks like it is not possible.
>>> When we compile and catalog a JBC routine then a dll will be placed into 
>>> bin. And when that JBC routine is called then it is actually called as a 
>>> dll rather than executable (which can be removed even). So the same address 
>>> space is used.
>>> On the contrary when we call python then it is always a separate executable 
>>> with its own address space..
>>> 
>>> вторник, 10 марта 2020 г., 19:03:45 UTC пользователь pfalson написал:
 https://github.com/pickmultivalue/jPython  
 
> On Tue, Mar 10, 2020 at 7:11 AM Igor Osmolovskiy  wrote:
> Would be interesting to have a look
> Thanks!
> 
> понедельник, 9 марта 2020 г., 19:31:07 UTC+1 пользователь pfalson написал:
>> 
>> Your only choices are start from jsh/jbc call python, call jbc etc or 
>> start with python call jbc. 
>> 
>> Either way the dp needs to be carried around. 
>> 
>> I can post an example of calling python (it needs jBASE 5).
>> 
>> Sent from my iPhone
>> 
 On Mar 9, 2020, at 10:36 AM, Igor Osmolovskiy  wrote:
 
>>> 
>>> Hello Dan
>>> Right, but is there a possibility to avoid creating a new thread? 
>>> One option proposed by Peter is to launch Pyhton from JBC e.g. But any 
>>> chance to achieve this for pure Pyhton?
>>> 
>>> понедельник, 9 марта 2020 г., 15:27:22 UTC+1 пользователь DanE написал:
 
 That would be because the jsh initiated the thread and the program 
 running under it is a shared object /dll beneath that thread.
 
  
 
 
 Dan Ell​| jBASE Technical Engineer
 jBASE International, Inc.
 813-498-2544 | 866‑582‑8447
 d...@jbase.com |   www.jbase.com
 1050 Calle Amanecer, Suite A | San Clemente, CA 92673
 From: jb...@googlegroups.com  On Behalf Of 
 Igor Osmolovskiy
 Sent: Monday, March 9, 2020 6:10 AM
 To: jBASE 
 Subject: Re: Getting the jBase DP (data pointer) of the current 
 session when using pure C
  
 
 Thank you Peter
 
  
 
 But do you think it is still possible to retrieve a DP for an existing 
 session? 
 
 It can be seen that no new session is created when a JBC program is 
 being called in jshell e.g. Therefore a DP initialization is happening 
 somehow for that case
 
 Thanks
 
 
 суббота, 7 марта 2020 г., 1:13:48 UTC+1 пользователь pfalson написал:
 
 That creates a regular jBASE session dp. The null args are more for 
 internal use. 
 
 Sent from my iPhone 
 
 > On Mar 6, 2020, at 2:56 PM, Igor Osmolovskiy  
 > wrote: 
 > 
 > Peter, thanks for the code sample 
 > 
 > Could you please elaborate on what exactly the next line means 
 > jbase_getdpEX(NULL,NULL,1,NULL) 
 > 
 > Thanks 
 > Igor 
 > 
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Re: Getting the jBase DP (data pointer) of the current session when using pure C

[Igor Osmolovskiy]

Right. If a jBASE routine is the starting point - no new session is created.

But if python is the starting point then looks like we cannot avoid an 
additional session

среда, 25 марта 2020 г., 14:25:33 UTC пользователь pfalson написал:

> Not following. If your starting point is jsh or LOGTO or a jBASE program 
> you should be able to call a python routine and convert the dp to a pylong 
> and pass it down for reuse.
>
> Sent from my iPhone
>
> On Mar 25, 2020, at 7:14 AM, Igor Osmolovskiy  > wrote:
>
> 
> Thanks Peter for your help
>
> Coming back to the initial question whether a DP could be initialized 
> without a new session - looks like it is not possible. 
> When we compile and catalog a JBC routine then a dll will be placed into 
> bin. And when that JBC routine is called then it is actually called as a 
> dll rather than executable (which can be removed even). So the same address 
> space is used.
> On the contrary when we call python then it is always a separate 
> executable with its own address space..
>
> вторник, 10 марта 2020 г., 19:03:45 UTC пользователь pfalson написал:
>
>> https://github.com/pickmultivalue/jPython  
>>
>> On Tue, Mar 10, 2020 at 7:11 AM Igor Osmolovskiy  
>> wrote:
>>
>>> Would be interesting to have a look
>>> Thanks!
>>>
>>> понедельник, 9 марта 2020 г., 19:31:07 UTC+1 пользователь pfalson 
>>> написал:

 Your only choices are start from jsh/jbc call python, call jbc etc or 
 start with python call jbc. 

 Either way the dp needs to be carried around. 

 I can post an example of calling python (it needs jBASE 5).

 Sent from my iPhone

 On Mar 9, 2020, at 10:36 AM, Igor Osmolovskiy  wrote:

 
 Hello Dan
 Right, but is there a possibility to avoid creating a new thread? 
 One option proposed by Peter is to launch Pyhton from JBC e.g. But any 
 chance to achieve this for pure Pyhton?

 понедельник, 9 марта 2020 г., 15:27:22 UTC+1 пользователь DanE написал:
>
> That would be because the jsh initiated the thread and the program 
> running under it is a shared object /dll beneath that thread.
>
>  
>
> Dan Ell​  | jBASE Technical Engineer
> jBASE International, Inc.
> *813-498-2544* |  866‑582‑8447
> *d...@jbase.com* |  www.jbase.com
> 1050 Calle Amanecer, Suite A | San Clemente, CA 92673
> *From:* jb...@googlegroups.com  *On Behalf Of 
> *Igor Osmolovskiy
> *Sent:* Monday, March 9, 2020 6:10 AM
> *To:* jBASE 
> *Subject:* Re: Getting the jBase DP (data pointer) of the current 
> session when using pure C
>
>  
>
> Thank you Peter
>
>  
>
> But do you think it is still possible to retrieve a DP for an existing 
> session? 
>
> It can be seen that no new session is created when a JBC program is 
> being called in jshell e.g. Therefore a DP initialization is happening 
> somehow for that case
>
> Thanks
>
>
> суббота, 7 марта 2020 г., 1:13:48 UTC+1 пользователь pfalson написал:
>
> That creates a regular jBASE session dp. The null args are more for 
> internal use. 
>
> Sent from my iPhone 
>
> > On Mar 6, 2020, at 2:56 PM, Igor Osmolovskiy  
> wrote: 
> > 
> > Peter, thanks for the code sample 
> > 
> > Could you please elaborate on what exactly the next line means 
> > jbase_getdpEX(NULL,NULL,1,NULL) 
> > 
> > Thanks 
> > Igor 
> > 
> > -- 
> > -- 
> > IMPORTANT: T24/Globus posts are no longer accepted on this forum. 
> > 
> > To post, send email to jb...@googlegroups.com 
> > To unsubscribe, send email to jbase-un...@googlegroups.com 
> > For more options, visit this group at 
> http://groups.google.com/group/jBASE?hl=en 
> 
>  
> > 
> > --- 
> > You received this message because you are subscribed to the Google 
> Groups "jBASE" group. 
> > To unsubscribe from this group and stop receiving emails from it, 
> send an email to jb...@googlegroups.com. 
> > To view this discussion on the web visit 
> https://groups.google.com/d/msgid/jbase/050fac31-e1aa-46e0-99bd-59d6f8dcdea7%40googlegroups.com
>  
> .
>  
>
>
> -- 
> -- 
> IM

Re: Getting the jBase DP (data pointer) of the current session when using pure C

[Peter Falson]

Not following. If your starting point is jsh or LOGTO or a jBASE program you 
should be able to call a python routine and convert the dp to a pylong and pass 
it down for reuse.

Sent from my iPhone

> On Mar 25, 2020, at 7:14 AM, Igor Osmolovskiy  wrote:
> 
> 
> Thanks Peter for your help
> 
> Coming back to the initial question whether a DP could be initialized without 
> a new session - looks like it is not possible.
> When we compile and catalog a JBC routine then a dll will be placed into bin. 
> And when that JBC routine is called then it is actually called as a dll 
> rather than executable (which can be removed even). So the same address space 
> is used.
> On the contrary when we call python then it is always a separate executable 
> with its own address space..
> 
> вторник, 10 марта 2020 г., 19:03:45 UTC пользователь pfalson написал:
>> https://github.com/pickmultivalue/jPython  
>> 
>>> On Tue, Mar 10, 2020 at 7:11 AM Igor Osmolovskiy  wrote:
>>> Would be interesting to have a look
>>> Thanks!
>>> 
>>> понедельник, 9 марта 2020 г., 19:31:07 UTC+1 пользователь pfalson написал:
 
 Your only choices are start from jsh/jbc call python, call jbc etc or 
 start with python call jbc. 
 
 Either way the dp needs to be carried around. 
 
 I can post an example of calling python (it needs jBASE 5).
 
 Sent from my iPhone
 
>> On Mar 9, 2020, at 10:36 AM, Igor Osmolovskiy  wrote:
>> 
> 
> Hello Dan
> Right, but is there a possibility to avoid creating a new thread? 
> One option proposed by Peter is to launch Pyhton from JBC e.g. But any 
> chance to achieve this for pure Pyhton?
> 
> понедельник, 9 марта 2020 г., 15:27:22 UTC+1 пользователь DanE написал:
>> 
>> That would be because the jsh initiated the thread and the program 
>> running under it is a shared object /dll beneath that thread.
>> 
>>  
>> 
>> 
>> Dan Ell​  | jBASE Technical Engineer
>> jBASE International, Inc.
>> 813-498-2544 |   866‑582‑8447
>> d...@jbase.com | www.jbase.com
>> 1050 Calle Amanecer, Suite A | San Clemente, CA 92673
>> From: jb...@googlegroups.com  On Behalf Of Igor 
>> Osmolovskiy
>> Sent: Monday, March 9, 2020 6:10 AM
>> To: jBASE 
>> Subject: Re: Getting the jBase DP (data pointer) of the current session 
>> when using pure C
>>  
>> 
>> Thank you Peter
>> 
>>  
>> 
>> But do you think it is still possible to retrieve a DP for an existing 
>> session? 
>> 
>> It can be seen that no new session is created when a JBC program is 
>> being called in jshell e.g. Therefore a DP initialization is happening 
>> somehow for that case
>> 
>> Thanks
>> 
>> 
>> суббота, 7 марта 2020 г., 1:13:48 UTC+1 пользователь pfalson написал:
>> 
>> That creates a regular jBASE session dp. The null args are more for 
>> internal use. 
>> 
>> Sent from my iPhone 
>> 
>> > On Mar 6, 2020, at 2:56 PM, Igor Osmolovskiy  wrote: 
>> > 
>> > Peter, thanks for the code sample 
>> > 
>> > Could you please elaborate on what exactly the next line means 
>> > jbase_getdpEX(NULL,NULL,1,NULL) 
>> > 
>> > Thanks 
>> > Igor 
>> > 
>> > -- 
>> > -- 
>> > IMPORTANT: T24/Globus posts are no longer accepted on this forum. 
>> > 
>> > To post, send email to jb...@googlegroups.com 
>> > To unsubscribe, send email to jbase-un...@googlegroups.com 
>> > For more options, visit this group at 
>> > http://groups.google.com/group/jBASE?hl=en 
>> > 
>> > --- 
>> > You received this message because you are subscribed to the Google 
>> > Groups "jBASE" group. 
>> > To unsubscribe from this group and stop receiving emails from it, send 
>> > an email to jb...@googlegroups.com. 
>> > To view this discussion on the web visit 
>> > https://groups.google.com/d/msgid/jbase/050fac31-e1aa-46e0-99bd-59d6f8dcdea7%40googlegroups.com.
>> 
>> -- 
>> -- 
>> IMPORTANT: T24/Globus posts are no longer accepted on this forum.
>>  
>> To post, send email to jb...@googlegroups.com
>> To unsubscribe, send email to jbase-un...@googlegroups.com
>> For more options, visit this group at 
>> http://groups.google.com/group/jBASE?hl=en
>> 
>> --- 
>> You received this message because you are subscribed to the Google 
>> Groups "jBASE" group.
>> To unsubscribe from this group and stop receiving emails from it, send 
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>> 
> 
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> To unsubscribe, send e

Re: Getting the jBase DP (data pointer) of the current session when using pure C

[Igor Osmolovskiy]

Thanks Peter for your help

Coming back to the initial question whether a DP could be initialized 
without a new session - looks like it is not possible. 
When we compile and catalog a JBC routine then a dll will be placed into 
bin. And when that JBC routine is called then it is actually called as a 
dll rather than executable (which can be removed even). So the same address 
space is used.
On the contrary when we call python then it is always a separate executable 
with its own address space..

вторник, 10 марта 2020 г., 19:03:45 UTC пользователь pfalson написал:

> https://github.com/pickmultivalue/jPython  
>
> On Tue, Mar 10, 2020 at 7:11 AM Igor Osmolovskiy  > wrote:
>
>> Would be interesting to have a look
>> Thanks!
>>
>> понедельник, 9 марта 2020 г., 19:31:07 UTC+1 пользователь pfalson написал:
>>>
>>> Your only choices are start from jsh/jbc call python, call jbc etc or 
>>> start with python call jbc. 
>>>
>>> Either way the dp needs to be carried around. 
>>>
>>> I can post an example of calling python (it needs jBASE 5).
>>>
>>> Sent from my iPhone
>>>
>>> On Mar 9, 2020, at 10:36 AM, Igor Osmolovskiy  wrote:
>>>
>>> 
>>> Hello Dan
>>> Right, but is there a possibility to avoid creating a new thread? 
>>> One option proposed by Peter is to launch Pyhton from JBC e.g. But any 
>>> chance to achieve this for pure Pyhton?
>>>
>>> понедельник, 9 марта 2020 г., 15:27:22 UTC+1 пользователь DanE написал:

 That would be because the jsh initiated the thread and the program 
 running under it is a shared object /dll beneath that thread.

  

 Dan Ell​  | jBASE Technical Engineer
 jBASE International, Inc.
 *813-498-2544* |  866‑582‑8447
 *d...@jbase.com* |  www.jbase.com
 1050 Calle Amanecer, Suite A | San Clemente, CA 92673
 *From:* jb...@googlegroups.com  *On Behalf Of 
 *Igor 
 Osmolovskiy
 *Sent:* Monday, March 9, 2020 6:10 AM
 *To:* jBASE 
 *Subject:* Re: Getting the jBase DP (data pointer) of the current 
 session when using pure C

  

 Thank you Peter

  

 But do you think it is still possible to retrieve a DP for an existing 
 session? 

 It can be seen that no new session is created when a JBC program is 
 being called in jshell e.g. Therefore a DP initialization is happening 
 somehow for that case

 Thanks


 суббота, 7 марта 2020 г., 1:13:48 UTC+1 пользователь pfalson написал:

 That creates a regular jBASE session dp. The null args are more for 
 internal use. 

 Sent from my iPhone 

 > On Mar 6, 2020, at 2:56 PM, Igor Osmolovskiy  
 wrote: 
 > 
 > Peter, thanks for the code sample 
 > 
 > Could you please elaborate on what exactly the next line means 
 > jbase_getdpEX(NULL,NULL,1,NULL) 
 > 
 > Thanks 
 > Igor 
 > 
 > -- 
 > -- 
 > IMPORTANT: T24/Globus posts are no longer accepted on this forum. 
 > 
 > To post, send email to jb...@googlegroups.com 
 > To unsubscribe, send email to jbase-un...@googlegroups.com 
 > For more options, visit this group at 
 http://groups.google.com/group/jBASE?hl=en 
 
  
 > 
 > --- 
 > You received this message because you are subscribed to the Google 
 Groups "jBASE" group. 
 > To unsubscribe from this group and stop receiving emails from it, 
 send an email to jb...@googlegroups.com. 
 > To view this discussion on the web visit 
 https://groups.google.com/d/msgid/jbase/050fac31-e1aa-46e0-99bd-59d6f8dcdea7%40googlegroups.com
  
 .
  


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