IP vars inside a component does that make any reference to the component code (or at least methods that use/reference the IPVars) NOT thread safe? or is the component 'walled off' for this consideration?
On Tue, 10 Jul 2018 13:30:27 -0400, Charles Miller via 4D_Tech wrote: > Further you need to use pointers into the compnent to get value. That is a > guard against the following > > In host db you have a variable named Version_txt which is set to “10.5 4D > version x.x” > > You can have a variable named Version_txt in the component with a different > setting for example “1.5 4D version x.y” > > regards > > Chuck > > On Tue, Jul 10, 2018 at 1:15 PM, Dani Beaubien via 4D_Tech < > 4d_tech@lists.4d.com> wrote: > >> Each component has it’s own namespace for it’s variables. They behave >> exactly as they would as per 4D Rules. Interprocess vars have a scope >> across all processes, process vars only have scope with the specific >> process. >> >> So in your example, that process var in process 1 would be “A” and in >> process 2 it would be “” since it had not been set. >> >> The host structure would not be able to access those vars unless the >> component has a method that the host can call and returns the value of the >> var. >> >> Hopefully that helps. >> >> Dani >> >> >> >>> On Jul 10, 2018, at 11:02 AM, Chip Scheide via 4D_Tech < >> 4d_tech@lists.4d.com> wrote: >>> >>> In a multi-process 4D, less then version v16, environment (not >>> multi-threaded), >>> 4D stand alone (single user) or C/S (client side), >>> >>> - a component is loaded. >>> - In process 1 the component is called, and (internal to the component) >>> a process var (x) is set to value "A" >>> - In process 2 the component is called, and (internal to the component) >>> the process var (x) is referenced. What is the value in of x inside the >>> component, in process 2? >>> -- "A" >>> -- "" >>> ??? >>> >>> >>> Thanks >>> Chip >>> >>> --------------- >>> Gas is for washing parts >>> Alcohol is for drinkin' >>> Nitromethane is for racing >>> ********************************************************************** >>> 4D Internet Users Group (4D iNUG) >>> FAQ: http://lists.4d.com/faqnug.html >>> Archive: http://lists.4d.com/archives.html >>> Options: https://lists.4d.com/mailman/options/4d_tech >>> Unsub: mailto:4d_tech-unsubscr...@lists.4d.com >>> ********************************************************************** >> >> ********************************************************************** >> 4D Internet Users Group (4D iNUG) >> FAQ: http://lists.4d.com/faqnug.html >> Archive: http://lists.4d.com/archives.html >> Options: https://lists.4d.com/mailman/options/4d_tech >> Unsub: mailto:4d_tech-unsubscr...@lists.4d.com >> ********************************************************************** >> > > > > -- > ----------------------------------------------------------------------------------------- > Chuck Miller Voice: (617) 739-0306 Fax: (617) 232-1064 > Informed Solutions, Inc. > Brookline, MA 02446 USA Registered 4D Developer > Providers of 4D, Sybase & SQL Server connectivity > http://www.informed-solutions.com > ----------------------------------------------------------------------------------------- > This message and any attached documents contain information which may be > confidential, subject to privilege or exempt from disclosure under > applicable law. These materials are intended only for the use of the > intended recipient. If you are not the intended recipient of this > transmission, you are hereby notified that any distribution, disclosure, > printing, copying, storage, modification or the taking of any action in > reliance upon this transmission is strictly prohibited. Delivery of this > message to any person other than the intended recipient shall not > compromise or waive such confidentiality, privilege or exemption > from disclosure as to this communication. > ********************************************************************** > 4D Internet Users Group (4D iNUG) > FAQ: http://lists.4d.com/faqnug.html > Archive: http://lists.4d.com/archives.html > Options: https://lists.4d.com/mailman/options/4d_tech > Unsub: mailto:4d_tech-unsubscr...@lists.4d.com > ********************************************************************** --------------- Gas is for washing parts Alcohol is for drinkin' Nitromethane is for racing ********************************************************************** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **********************************************************************
