Subject Re: [ib-support] Threads and GDS32.dll
Author Paul Reeves
On Fri, 03 May 2002 11:54:50 -0000, ryanb486 wrote:
>I've read somewhere that it is safe if each thread uses its own
>connection. Does anyone know if this is correct?


>If So - Should I ensure that only one thread at a time calls in to
>isc_attach_database - And if so is it then safe to call the other
>api function on mutiple threads simultaniously if each different
>thread is passing a different connection handle.

The way I would handle this is to give each thread its own handle to the library.

I guess you could share the libary handle - but then you may be advised to wrap the isc_attach_database call in a critical section.

What is your purpose of using threads? Overall I've never seen a performance gain that warrants the effort of multiple thread management. What is good, however, is to separate database activity from the UI, and then to synchronise the two when a query has completed. This is because the Firebird (and InterBase) API is synchronous. A long running query will appear to hang an application.

Paul Reeves
Supporting users of Firebird and InterBase