Re: Python recompile

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Sujet : Re: Python recompile
De : chris.m.thomasson.1 (at) *nospam* gmail.com (Chris M. Thomasson)
Groupes : comp.lang.c
Date : 11. Mar 2025, 01:56:55
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vqo1oo$1kkf3$4@dont-email.me>
References : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
User-Agent : Mozilla Thunderbird
On 3/10/2025 2:55 PM, Kaz Kylheku wrote:
On 2025-03-10, Chris M. Thomasson <chris.m.thomasson.1@gmail.com> wrote:
On 3/10/2025 2:36 PM, Lawrence D'Oliveiro wrote:
On Mon, 10 Mar 2025 15:20:00 +0200, Michael S wrote:
>
Similar to poll(), yes. Not so similar to super-ugly select(). I
hope that Unix people stopped using select in new programs two or
more decades ago.
>
Seems like WaitForMultipleObjects is more similar to select() than
poll(), though: it has a fixed limit (MAXIMUM_WAIT_OBJECTS) on the
number of objects you can wait on at once.
>
But WaitForMultipleObjects can do things that poll can not, like
waiting on semaphore or on event or on thread (for completion, which
POSIX people, in their eternal fondness for idiotic names call
'join').
>
[...]
>
For some damn reason I am remembering that the array that
WaitForMultipleObjects waits on should be "shifted" or even randomized
per call in a server loop that is using EVENTS. IIRC, this was way back
in late 90's and early 2000's.
 You remember correctly. I remember coding this.
 The problem is that the function has no way to indicate which individual
objects are signaled, when used with the "or" semantics (any one object
being signaled can wake it up).
 The function cannot indicate to the caller anything like:
you successfully acquired mutexes [3] and [4], and were
signaled by event [7].
 It identifies a single object that was signaled, in spite of
the "Multiple" in its name.
 When multiple objects are in some signaled state (e.g. unlocked
mutexes), the function favors the leftmost ones in the array,
leading to starvation problems in event dispatch.
 The application must permute the array in order to ensure
fairness in servicing all the objects.
Ahhh! I knew I was not hallucinating! lol. ;^D

 The current documentation still notes that:
    When bWaitAll is FALSE, this function checks the handles in the array
   in order starting with index 0, until one of the objects is signaled.
   If multiple objects become signaled, the function returns the index of
   the first handle in the array whose object was signaled.
 Amazingly, it still doesn't caution the programmer against the
issue this can cause and the doesn't recommend permuting the array.
 
Big time! Wow.

Date Sujet#  Auteur
3 Mar 25 * Re: Python recompile337Muttley
3 Mar 25 +* Re: Python recompile3David Brown
4 Mar 25 i`* Re: Python recompile2Muttley
4 Mar 25 i `- Re: Python recompile1Kaz Kylheku
3 Mar 25 +* Re: Python recompile332Richard Heathfield
4 Mar 25 i`* Re: Python recompile331Muttley
4 Mar 25 i `* Re: Python recompile330Richard Heathfield
4 Mar 25 i  +* Re: Python recompile328Muttley
4 Mar 25 i  i`* Re: Python recompile327Richard Heathfield
4 Mar 25 i  i `* Re: Python recompile326Muttley
4 Mar 25 i  i  +* Re: Python recompile5Richard Heathfield
4 Mar 25 i  i  i`* Re: Python recompile4Muttley
4 Mar 25 i  i  i `* Re: Python recompile3bart
4 Mar 25 i  i  i  `* Re: Python recompile2Muttley
4 Mar 25 i  i  i   `- Re: Python recompile1Kaz Kylheku
4 Mar 25 i  i  `* Re: Python recompile320Kaz Kylheku
4 Mar 25 i  i   `* Re: Python recompile319bart
5 Mar 25 i  i    +* Re: Python recompile27Lawrence D'Oliveiro
5 Mar 25 i  i    i`* Re: Python recompile26bart
5 Mar 25 i  i    i `* Re: Python recompile25Lawrence D'Oliveiro
5 Mar 25 i  i    i  `* Re: Python recompile24bart
5 Mar 25 i  i    i   +* Re: Python recompile8Muttley
6 Mar 25 i  i    i   i`* Re: Python recompile7Lawrence D'Oliveiro
6 Mar 25 i  i    i   i `* Re: Python recompile6Muttley
6 Mar 25 i  i    i   i  +* Re: Python recompile2Kaz Kylheku
7 Mar 25 i  i    i   i  i`- Re: Python recompile1Mark Bourne
6 Mar 25 i  i    i   i  `* Re: Python recompile3Lawrence D'Oliveiro
7 Mar 25 i  i    i   i   `* Re: Python recompile2Muttley
7 Mar 25 i  i    i   i    `- Re: Python recompile1Lawrence D'Oliveiro
6 Mar 25 i  i    i   +* Re: Python recompile11Tim Rentsch
6 Mar 25 i  i    i   i`* Re: Python recompile10bart
6 Mar 25 i  i    i   i `* Re: Python recompile9Tim Rentsch
7 Mar 25 i  i    i   i  +* Re: Python recompile6bart
13 Mar 25 i  i    i   i  i`* Re: Python recompile5Tim Rentsch
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19 Mar 25 i  i    i   i  i  `* Re: Python recompile3Tim Rentsch
19 Mar 25 i  i    i   i  i   `* Re: Python recompile2bart
21 Mar 25 i  i    i   i  i    `- Re: Python recompile1Tim Rentsch
7 Mar 25 i  i    i   i  `* Re: Python recompile2Waldek Hebisch
13 Mar 25 i  i    i   i   `- Re: Python recompile1Tim Rentsch
6 Mar 25 i  i    i   `* Re: Python recompile4Lawrence D'Oliveiro
6 Mar 25 i  i    i    `* Re: Python recompile3bart
6 Mar 25 i  i    i     `* Re: Python recompile2Lawrence D'Oliveiro
7 Mar 25 i  i    i      `- Re: Python recompile1David Brown
5 Mar 25 i  i    +* Re: Python recompile290Muttley
5 Mar 25 i  i    i+* Re: Python recompile3Lawrence D'Oliveiro
6 Mar 25 i  i    ii`* Re: Python recompile2bart
6 Mar 25 i  i    ii `- Re: Python recompile1Lawrence D'Oliveiro
6 Mar 25 i  i    i`* Re: Python recompile286Waldek Hebisch
6 Mar 25 i  i    i +* Re: Python recompile5bart
6 Mar 25 i  i    i i+- Re: Python recompile1Lawrence D'Oliveiro
7 Mar 25 i  i    i i`* Re: Python recompile3Waldek Hebisch
8 Mar 25 i  i    i i `* Re: Python recompile2bart
11 Mar 25 i  i    i i  `- Re: Python recompile1Waldek Hebisch
6 Mar 25 i  i    i +- Re: Python recompile1Lawrence D'Oliveiro
7 Mar 25 i  i    i +* Re: Python recompile275Muttley
7 Mar 25 i  i    i i`* Re: Python recompile274bart
7 Mar 25 i  i    i i +* Re: Python recompile269Muttley
7 Mar 25 i  i    i i i`* Re: Python recompile268bart
7 Mar 25 i  i    i i i +* Re: Python recompile233Keith Thompson
7 Mar 25 i  i    i i i i+* Re: Python recompile9bart
7 Mar 25 i  i    i i i ii+- Re: Python recompile1flexibeast
8 Mar 25 i  i    i i i ii+* Re: Python recompile2Keith Thompson
8 Mar 25 i  i    i i i iii`- Re: Python recompile1Kaz Kylheku
8 Mar 25 i  i    i i i ii+* Re: Python recompile4Keith Thompson
8 Mar 25 i  i    i i i iii`* Re: Python recompile3bart
8 Mar 25 i  i    i i i iii `* Re: Python recompile2Keith Thompson
8 Mar 25 i  i    i i i iii  `- Re: Python recompile1bart
8 Mar 25 i  i    i i i ii`- Re: Python recompile1Lawrence D'Oliveiro
8 Mar 25 i  i    i i i i`* Re: Python recompile223Michael S
8 Mar 25 i  i    i i i i `* Re: Python recompile222bart
8 Mar 25 i  i    i i i i  +* Re: Python recompile92Chris M. Thomasson
9 Mar 25 i  i    i i i i  i`* Re: Python recompile91Lawrence D'Oliveiro
9 Mar 25 i  i    i i i i  i `* Re: Python recompile90Michael S
9 Mar 25 i  i    i i i i  i  +* Re: Python recompile87Lawrence D'Oliveiro
9 Mar 25 i  i    i i i i  i  i+* Re: Python recompile33Michael S
9 Mar 25 i  i    i i i i  i  ii+- Re: Python recompile1Michael S
9 Mar 25 i  i    i i i i  i  ii+- What is the source language? (Was: Python recompile)1Kenny McCormack
9 Mar 25 i  i    i i i i  i  ii+- Re: Python recompile1Kaz Kylheku
9 Mar 25 i  i    i i i i  i  ii`* Re: Python recompile29Lawrence D'Oliveiro
10 Mar 25 i  i    i i i i  i  ii `* Re: Python recompile28Michael S
10 Mar 25 i  i    i i i i  i  ii  +* Re: Python recompile13Muttley
10 Mar 25 i  i    i i i i  i  ii  i+* Re: Python recompile3Kaz Kylheku
11 Mar 25 i  i    i i i i  i  ii  ii`* History of poll() API (was: Python recompile)2Michael S
11 Mar 25 i  i    i i i i  i  ii  ii `- Re: History of poll() API (was: Python recompile)1Dan Cross
10 Mar 25 i  i    i i i i  i  ii  i+* Re: Python recompile7Lawrence D'Oliveiro
11 Mar 25 i  i    i i i i  i  ii  ii`* Re: Python recompile6Muttley
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12 Mar 25 i  i    i i i i  i  ii  ii  +* Re: Python recompile3Muttley
14 Mar 25 i  i    i i i i  i  ii  ii  i`* Re: Python recompile2Lawrence D'Oliveiro
14 Mar 25 i  i    i i i i  i  ii  ii  i `- Re: Python recompile1Muttley
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10 Mar 25 i  i    i i i i  i  ii  `* Re: Python recompile14Lawrence D'Oliveiro
10 Mar 25 i  i    i i i i  i  ii   `* Re: Python recompile13Chris M. Thomasson
10 Mar 25 i  i    i i i i  i  ii    +* Re: Python recompile5Kaz Kylheku
10 Mar 25 i  i    i i i i  i  ii    i+- Re: Python recompile1Michael S
11 Mar 25 i  i    i i i i  i  ii    i+- Re: Python recompile1Chris M. Thomasson
13 Mar 25 i  i    i i i i  i  ii    i`* Re: Python recompile2Chris M. Thomasson
13 Mar 25 i  i    i i i i  i  ii    i `- Re: Python recompile1Kaz Kylheku
11 Mar 25 i  i    i i i i  i  ii    `* Re: Python recompile7Lawrence D'Oliveiro
10 Mar 25 i  i    i i i i  i  i`* Re: Python recompile53Chris M. Thomasson
9 Mar 25 i  i    i i i i  i  `* Re: Python recompile2Kaz Kylheku
10 Mar 25 i  i    i i i i  `* Re: Python recompile129Waldek Hebisch
8 Mar 25 i  i    i i i `* Re: Python recompile34Muttley
7 Mar 25 i  i    i i +- Re: Python recompile1Keith Thompson
7 Mar 25 i  i    i i `* Re: Python recompile3Lawrence D'Oliveiro
7 Mar 25 i  i    i `* Re: Python recompile4Lawrence D'Oliveiro
6 Mar 25 i  i    `- Re: Python recompile1Lawrence D'Oliveiro
5 Mar 25 i  `- Re: Python recompile1James Kuyper
4 Mar 25 `- Re: Python recompile1Kenny McCormack

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