[M3devel] cloning headers vs. indirection/win32?

[Jay K]

cloning headers vs. indirection/win32

 


So..I've been a champion of pushing code into C to avoid cloning headers.

 


I'm not sure the following statement is logical:
  It is easier to clone "windows.h" than "libc.h".

 


The possible logic is that there is less variation.
There is very little #ifdef in windows.h, whereas "libc.h" contains
both #ifdefs and there are to some extent n different versions.

 


Another possible explanation is that windows.h was cloned long ago
not by me and "libc.h" I've had to deal with more, on "new" systems.

 


It is an exaggeration to say OpenBSD/NetBSD/FreeBSD/Linux/Solaris/Darwin etc.
are "completely" different independent rewrites but it is also an
exaggeration to say they are "the same".
It is tempting to say the stat struct is the only problem, but it isn't.

 

 

If it IS logical, then some of this could/should be undone for Windows.
In particular I'm pretty sympathetic to having the Modula-3 code
use Initialize/Enter/LeaveCriticalSection directly.


 

With the following caveats:
  - maybe it isn't logical
  - as things are currently, there is more opportunity to merge pthreads and Win32 implementation

 


Going "back" to a somewhat more optimized Win32 implementation is a bit of a barrier
to merging them.

 


I'll probably things asis in this regard.

 


You know..to be "consistent", I should go through ThreadWin32.m3's:

 


FROM WinNT IMPORT LONG, HANDLE, DWORD, UINT32;
FROM WinBase IMPORT WaitForSingleObject, INFINITE,
    CloseHandle, CreateThread, ResumeThread, Sleep,
    SuspendThread, GetThreadContext, SetLastError, GetLastError,
    CREATE_SUSPENDED, GetCurrentThreadId, InterlockedCompareExchange,
    InterlockedExchange, InterlockedIncrement, InterlockedDecrement,
    SetEvent, WAIT_OBJECT_0, CreateEvent, WaitForMultipleObjects;
FROM ThreadContext IMPORT PCONTEXT;

 

 

and reduce those and/or wrap them in C like is done for m3core/unix.

 


Well, maybe. Constants are easy, plus statically link a la hand.obj/Uconstants.obj.
Functions are easy.
"base" types like LONG, HANDLE, DWORD, UINT32 we just go ahead and clone.

 


 - Jay

 		 	   		  
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