IPXC_Pages::InsertPagesFromDoc source document

[pschlan]

Hi,

is it safe to call InsertPagesFromDoc from multiple threads each with a separate destination document but a shared source document?

I.e. I open a single pSrcDoc in a thread, then I create a couple of worker threads which create new documents and call InsertPagesFromDoc using the same source doc.

Or do I have to use a dedicated instance of the source document in every worker thread, i.e. re-open it in every thread?

Thanks,

Patrick

[Lzcat - Tracker Supp]

Hi, pschlan

In theory it is safe to do this, but when inserting pages from one document to another both documents are exclusively locked, so while one thread will do work all other will wait for source document became unlocked. For best performance you should have one copy of source document per each thread. Be aware that InsertPagesFromDoc may require significant amount of memory (depending on source and destination documents), so it is not recommended to do this in parallel in 32-bit code or when you have limited amount of RAM.

Kind regards,
Lzcat - Tracker Supp

[pschlan]

This is very useful information, thank you!

[pschlan]

Follow-up question: Any easy way to clone an IPXC_Document, or do I have to load from file multiple times?

[Lzcat - Tracker Supp]

Hi, pschlan

There is no way to clone IPXC_Document, best solution is open multiple times.

Kind regards,
Lzcat - Tracker Supp

[pschlan]

Ok, even with the locking in place and shared documents I already see a tremendous speedup
Thanks again!

[Tracker Supp-Stefan]