Re: C++ Threads, what's the status quo?
Mirek Fidler wrote:
Ahh... I guess you should seriously reconsider the issue.
Recommended reading is e.g. google: "why double checked guard does not
work".
Just for starters, if you have
Shared y;
Mutex y_lock;
void fn() {
y_lock.Lock();
y = 10;
y_lock.Unlock();
}
nothing in C++ standard prevents C++ compiler to generate machine code
equivalent to
void fn() {
y = 10;
y_lock.Lock();
y_lock.Unlock();
}
Are you saying that the C++ standard does not prescribe sequential
execution of statements in a single-threaded program?
If that is the case, then I could write a single-threaded application
that would not behave as a programmer would expect using an example
very similar to the one you gave.
Also, do you have a link regarding the quote above for Google? I
looked, and did not find what I think you were suggesting.
-Le Chaud Lapin-
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