Re: Attempting to create file i task

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On 2021-03-17 15:17, reinert wrote:
> onsdag 17. mars 2021 kl. 13:49:23 UTC+1 skrev J-P. Rosen:
>> Le 17/03/2021 à 13:39, reinert a écrit :
> .......
>>>
>> Create always "creates" the file, i.e. if it exists, it is overwritten.
>> What would you expect?
> 
> Sorry to be imprecise. The files for two instances of the task have different names.
> For example "name_1" and "name_2" respectively. My problem is that the (external) file "name_1" is overwritten.
> When I run the two task separately (with various tasks between) then "name_1" is not overwritten.

Look how you pass the file name to the tasks. Normally there must be an 
entry point that *copies* the parameter during rendezvous to a 
task-local string and opens the file with the copy after leaving the 
rendezvous.

But if you come to an idea of using a global variable, an unbounded 
string or anything alike with *referential* semantics, you will get 
bitten, if that is updated concurrently.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de