IORequests allocation and cloning

I want to send some requests to timer.device, but more than one at once. The usual way on OS 3.x is to allocate one request with CreateIORequest(), open a device with it, then, if more than one request is needed, make clones with just AllocMem() and CopyMem().

When I'm looking into "AmigaOS 4 migration guide", I can see that CreateMsgPort() and CreateIORequest() are replaced with AllocSysObject[Tags](). Does it mean the former functions do not work? As I compile for MorphOS and AmigaOS 3 from the same source, I want to reduce conditional compiling as much as possible.

Then request cloning. The example in the migration guide uses one request. How should I make clones? If in traditional way, what flags for AllocMem() (I guess MEMF_SHARED, but not sure)?

I wait for requests to be completed in a big loop, which checks multiple ports. Then I can't use WaitIO() but use Wait() and then check signal mask. The result is that request stays in the port queue. Can I remove it with GetMsg() just like an ordinary message?

@krashan

The proper OS4 way to allocate the first one is:



Then allocate the clone:

edit: duplicate post removed.

@xeron

It seems we need an updated SDK for that, in the latest public SDK we only have ASOIOR_Size and ASOIOR_ReplyPort

@abalaban

Really? Oh that sucks.

Well, in that case, carry on with the OS3.x way until the new SDK...

@xeron

As a remainder the latest public SDK was delivered on April, 10th. 2006 a while back. Since then I imagine there was a huge work

@krashan

Quote:

Of course they still work. They are just implemented as wrappers for the new extended functions much like f.e. OldOpenLibrary() in classic AmigaOS is implemented simply as a call to OpenLibrary(libname, 0).

Other similar cases are f.e. OpenWindow()/OpenWindowTagList(), OpenScreen()/OpenScreenTagList() and CreateProc()/CreateNewProc().

Any structures that need to be accessed by more than one program (like IORequests f.e.) should be allocated as MEMF_SHARED.