Home » U++ Library support » U++ MT-multithreading and servers » StaticMutex/ONCELOCK question
| Re: StaticMutex/ONCELOCK question [message #19984 is a reply to message #19940] |
Sun, 08 February 2009 03:09  |
Novo
Messages: 1430
Registered: December 2006
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Ultimate Contributor |
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| Novo wrote on Tue, 03 February 2009 14:28 |
What I do not understand is how uninitialized o_b_ works.
{
static volatile bool o_b_;
if(!ReadWithBarrier(o_b_)) {
...
}
}
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I finally figured out that myself. ANSI-compatible compiler initializes all static POD data with zeroes before a very first function call. So, this static variable is always initialized in a thread-safe way.
There is always something to learn about C.
Regards,
Novo
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