Re: Draft of generation 2 thread class

From: terekhov (terekhov_at_[hidden])
Date: 2002-01-25 05:14:37

--- In boost_at_y..., "bill_kempf" <williamkempf_at_h...> wrote:
> --- In boost_at_y..., "terekhov" <terekhov_at_d...> wrote:
> > [...]
> > > > May I just repost 
> > > > the last message I've sent to you yesterday (you did not 
reply 
> > > > yet)?
> > > 
> > > Feel free to.  I haven't replied because there wasn't much new 
> that 
> > I 
> > > felt required replies, and I'm hip deep in other things :).
> > 
> > To:	"William Kempf" <williamkempf_at_h...>
> > cc:	bdawes_at_a..., pdimov_at_m... 
> > From:	Alexander Terekhov/Germany/IBM_at_IBMDE
> > Subject:	Re: Boost.Thread/thread_ptr ?!
> 
> [snip]
> 
> Like I said before, I don't see too much that needs an immediate 
> reply, though I'm looking forward to hearing other voices on this.  
> However, I'd like to ask an important question: is there anything 
in 
> the redesign I've posted that makes building your thread_ptr design 
> on top of it either difficult or impossible? The answer to this, I 
> think, will help to illuminate problems in the direction I'm 
leaning 
> towards now, as well as to decide whether or not either of us is 
> totally off base here. 

The answer would be definitely:

"no, there's nothing in the posted design that makes things 
 difficult or impossible to use it as the basis for implementing 
 my design"

*IF* the posted design would fully support (and be 
compatible wrt C-level cancel/exit/etc functions in 
my OLD code) the full functionality (*100%*) of the 
following *mandatory* (not optional) POSIX threading 
calls (thread/mutex/cond attributes aside for now, 
these are just pthread_* calls used in the current 
version of mythread.c):

pthread_mutex_init
pthread_mutex_lock
pthread_mutex_unlock
pthread_mutex_destroy

pthread_cond_init
pthread_cond_wait
pthread_cond_signal
pthread_cond_broadcast
pthread_cond_destroy***

pthread_key_create
pthread_key_delete
pthread_setspecific
pthread_getspecific

pthread_create
pthread_detach
pthread_join
pthread_self
pthread_exit
pthread_once

pthread_cleanup_push
pthread_cleanup_pop
pthread_cancel
pthread_setcancelstate
pthread_setcanceltype

regards,
alexander.

[***] BTW, the last time I've looked at it,
WIN32 version was lacking proper sync. in 
boost::condition's destructor.

P.S. Perhaps you already know it, but
apropos your recent "standardization",
POSIX++ vs WIN32, lowest common denominator, 
etc discussions, I just would like to 
briefly mention that MS-WIN threading++ 
MODEL/API is now THE ECMA-*STANDARD*:
(doc.list w/o Mutex/Auto-/Manual-events,etc stuff)

 Directory of G:\C#\tr-084\2001tc39-020b\System\Threading

10/02/2001  12:44p             546,816 Interlocked.doc
11/14/2001  05:38p              40,519 Interlocked.pdf
10/02/2001  12:44p             568,832 Monitor.doc
11/14/2001  05:36p              56,873 Monitor.pdf
10/02/2001  12:44p              30,208 
SynchronizationLockException.doc
11/14/2001  05:36p              20,093 
SynchronizationLockException.pdf
10/02/2001  12:44p             686,080 Thread.doc
11/14/2001  05:36p             138,010 Thread.pdf
10/02/2001  12:45p              26,624 ThreadAbortException.doc
11/14/2001  05:36p              17,664 ThreadAbortException.pdf
10/02/2001  12:44p              26,624 ThreadPriority.doc
11/14/2001  05:36p              18,577 ThreadPriority.pdf
10/02/2001  12:45p              21,504 ThreadStart.doc
11/14/2001  05:37p              13,391 ThreadStart.pdf
10/02/2001  12:44p              34,816 ThreadState.doc
11/14/2001  05:37p              23,926 ThreadState.pdf
10/02/2001  12:45p              32,256 ThreadStateException.doc
11/14/2001  05:37p              21,215 ThreadStateException.pdf
10/02/2001  12:45p              22,016 Timeout.doc
11/14/2001  05:37p              14,015 Timeout.pdf
10/02/2001  12:45p             546,816 Timer.doc
11/14/2001  05:37p              41,480 Timer.pdf
10/02/2001  12:45p              23,552 TimerCallback.doc
11/14/2001  05:37p              14,747 TimerCallback.pdf
10/02/2001  12:43p             530,944 WaitHandle.doc
11/14/2001  05:35p              30,514 WaitHandle.pdf
              26 File(s)      3,548,112 bytes

more info:

http://www.cs.umd.edu/~pugh/java/memoryModel/archive/0938.html