Hai,
I'm new to multithread programming. Now has some doubt on it. Hope anybody
can help.
How do use the semphore?
Thanks
3  23386 
"chiew peng" <li**********@i wow.com.sg> wrote... I'm new to multithread programming. Now has some doubt on it. Hope
anybody can help.
How do use the semphore?
A semaphore is a global variable with two (rarely more) known
states. Threads can gain access to semaphores using some king
of OS mechanism and check the states of the semaphores. But
since C++ doesn't define semaphores, they are off-topic here.
The best place to ask is comp.programmin g.threads.
Victor
Ok, anyway thanks!
"Victor Bazarov" <v.********@att Abi.com> wrote in message
news:9_******** *********@rwcrn sc51.ops.asp.at t.net... "chiew peng" <li**********@i wow.com.sg> wrote... I'm new to multithread programming. Now has some doubt on it. Hope
anybody can help.
How do use the semphore?
A semaphore is a global variable with two (rarely more) known
states. Threads can gain access to semaphores using some king
of OS mechanism and check the states of the semaphores. But
since C++ doesn't define semaphores, they are off-topic here.
The best place to ask is comp.programmin g.threads.
Victor
Victor Bazarov wrote:
"chiew peng" <li**********@i wow.com.sg> wrote... I'm new to multithread programming. Now has some doubt on it. Hope anybody can help.
How do use the semphore?
A semaphore is a global variable with two (rarely more) known
states. Threads can gain access to semaphores using some king
of OS mechanism and check the states of the semaphores. But
since C++ doesn't define semaphores, they are off-topic here.
They are brain-damaged (as far as THREADING is concerned).
The best place to ask is comp.programmin g.threads.
<Forward Inline>
-------- Original Message --------
Newsgroups: comp.programmin g.threads
Subject: Re: semaphore
chiew peng wrote:
Hi,
I'm new to multithread programming. Now has some doubt on it. Hope anybody
can help.
How do use the semphore?
http://terekhov.de/downey03semaphores.pdf
(The Little Book of Semaphores, Copyright (C) 2003 Allen B. Downey)
Now, check out this thread (please follow the embedded links):
http://www.mail-archive.com/bo***@li.../msg07826.html
(Subject: [boost] no semaphores in boost::thread)
Try to NOT miss the following msgs of mine... I'll copy&paste only one
of them below:
http://www.mail-archive.com/bo***@li.../msg07506.html
http://www.mail-archive.com/bo***@li.../msg07519.html
http://www.mail-archive.com/bo***@li.../msg08431.html
Maciej Sobczak wrote:
[...] What about providing both (condvars and semas), but with documenting
known pros and cons?
Personally, I'd have no problems with some *separate* Boost.Semas (for
things meant to be done by the current POSIX/IPC semaphores: async-
signal-safe unlock operation, memory-isolated synchronization ) library
with the "attached sticker" ala "Intergalac tic Surgeon General's
Warning: DON'T USE IT FOR THREADING!" (or something like that). Well,
that would actually fit rather nicely into "The POSIX++ Vision". ;-)
regards,
alexander.
-- http://terekhov.de/your-next-book This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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