[M3devel] [M3commit] CVS Update: cm3

[Jay]

Note that I've been avoiding touching "mainstream" or already existant platforms -- FreeBSD, LINUXLIBC6, *_DARWIN.
 
Perhaps I should go ahead and cross that line, as my testability/testing allows?
 
Slightly linked question is if user threads should remain.
They don't work, I believe on any platform, but I understand could easily be made to.
 
 - Jay

----------------------------------------
> From: jay.krell at cornell.edu
> To: hosking at cs.purdue.edu; jkrell at elego.de
> Date: Sun, 28 Dec 2008 23:49:25 +0000
> CC: m3devel at elegosoft.com; m3commit at elegosoft.com
> Subject: Re: [M3commit] CVS Update: cm3
>
>
> This one I can undo and still feel ok -- just push sem_t into Utypes.i3 and expose it from a common Usem.i3.
> There is only one sem_t in the system.
> It is global. This change just makes it usually larger and more aligned than necessary.
>
>
> The danger would be if sem_t is ever embedded in something else OS-defined, or if the OS ever returned a pointer to one that Modula-3 code copied.
>
>
> In general, I'm thinking either Utypes.i3 or some new Uinternal.i3 or Usysdep.i3 or Utypes.i3 + Uconstants.i3 should be where most/all system-dependent stuff.
> Even existant Utypes.i3 have much redundancy -- all the ulong/ushort/int8/int16/int32/int64 types are always the same, just stuff like nlink_t, mode_t, gid_t, uid_t, off_t vary. Though imho off_t should always be INT64 or UINT64.
>
>
> Usysdep.i3 seems best?
>
>
> - Jay
>
>
> ----------------------------------------
>> From: hosking at cs.purdue.edu
>> To: jkrell at elego.de
>> Date: Mon, 29 Dec 2008 09:50:37 +1100
>> CC: m3devel at elegosoft.com; m3commit at elegosoft.com
>> Subject: Re: [M3commit] CVS Update: cm3
>>
>> This change makes me uneasy -- do you mean to say we have a uniform
>> definition of sem_t when the different targets have different
>> definitions? :-O
>>
>> On 28 Dec 2008, at 11:03, Jay Krell wrote:
>>
>>> CVSROOT: /usr/cvs
>>> Changes by: jkrell at birch. 08/12/28 11:03:34
>>>
>>> Modified files:
>>> cm3/m3-libs/m3core/src/unix/Common/: m3makefile
>>> cm3/m3-libs/m3core/src/unix/linux-common/: m3makefile
>>> cm3/m3-libs/m3core/src/unix/openbsd-common/: m3makefile
>>> Added files:
>>> cm3/m3-libs/m3core/src/unix/Common/: Usem.i3
>>> Removed files:
>>> cm3/m3-libs/m3core/src/unix/linux-common/: Usem.i3
>>> cm3/m3-libs/m3core/src/unix/openbsd-common/: Usem.i3
>>>
>>> Log message:
>>> another common header file -- however this bought by defining sem_t
>>> to have the maximum size and alignment of any system;
>>> Solaris's 48 byte 64bit aligned version
>>> The CM3 code base has one static sem_t in the pthread code.
>>