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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...intrinsics like ARM GCC's __clz (no header needed), or x86's _lzcnt_u32 on CPUs that support the lzcnt instruction. (Beware that lzcnt decodes as bsr on older CPUs instead of faulting, which gives 31-lzcnt for non-zero inputs.)
There's unfortunately no way to portably take advantage of the various...
LinkedBlockingQueue vs ConcurrentLinkedQueue
... values by "busy waiting", for example, with the consumer thread eating up CPU.
So which one is "better" depends on the number of consumer threads, on the rate they consume/produce, etc. A benchmark is needed for each scenario.
One particular use case where the ConcurrentLinkedQueue is clearly bet...
Build an iOS app without owning a mac? [closed]
...t may be in for example Security -> Virtualization or in Advanced -> CPU Setup. If you can't find any of these options, search Google for enable virtualization (the kind of computer you have). Don't change anything in the BIOS just like that at random because otherwise it could cause problems ...
How do you create an asynchronous method in C#?
...Seconds(1));
}
return DateTime.Now;
}
If your async method is doing CPU work, you should use Task.Run:
private static async Task<DateTime> CountToAsync(int num = 10)
{
await Task.Run(() => ...);
return DateTime.Now;
}
You may find my async/await intro helpful.
...
The provider is not compatible with the version of Oracle client
...ad no issue since moving over to it / you can set your projects back to AnyCPU etc and it works great :)
– Tod Thomson
Nov 28 '13 at 5:58
5
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What is the difference between _tmain() and main() in C++?
...ed as the pair of bytes \0 followed by the ASCII value.
And since the x86 CPU is little-endian, the order of these bytes are swapped, so that the ASCII value comes first, then followed by a null byte.
And in a char string, how is the string usually terminated? Yep, by a null byte. So your program ...
What is the difference between Sublime text and Github's Atom [closed]
...as markedly improved the feel of the editor, it still feels cumbersome for CPU intensive tasks as described above, and is still slow in startup. Apart from performance improvements, Atom feels significantly more stable across the board.
Development of Sublime has picked up again since Jan 2015, wit...
When to use inline function and when not to use it?
...am and mark small functions that get called lots of times and burn through CPU cycles that as inline. The keyword here is "small" - once the function call overhead is negligible compared to the time spent in the function, it's pointless to inline them.
The other use I'd suggest is if you've got sma...
多媒体组件 · App Inventor 2 中文网
...全就是杂乱的，不知是不是因为版本过旧，还是其他设置问题，经过一系列尝试（包括设置文本朗读器的国家及语言属性）仍然是不行的。最终只得选择“Google文字转语言引擎”（语音设置为”中文“），中文朗读的效果也非常...
How does password salt help against a rainbow table attack?
... scrypt, bcrypt, and PBKDF2 are good choices and more than worth the extra CPU cycles on the server IMHO. Argon2 is currently the state of the art, but not as battle-tested as the others.
– kgriffs
Oct 6 '15 at 17:47
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