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Lock, mutex, semaphore… what's the difference?
...ead termination notification, recursion?, 'priority inversion avoidance'?, etc].
4) And now, talking about 'spinlocks', first some definitions:
Critical Region= A region of memory shared by 2 or more processes.
Lock= A variable whose value allows or denies the entrance to a 'critical region'. (It...
How do you install Boost on MacOS?
...oes it take different people? Took me 48 mins with 2 GB RAM, not sure what CPU.
– Luke Stanley
Jun 20 '13 at 13:37
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Where does the iPhone Simulator store its data?
...pp in the simulator
Open Activity Monitor
Find the name of your app in the CPU tab
Double-click it and open the "Open Files and Ports"
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Kill some processes by .exe file name
...esn't always mean code will run faster, but at least it will not waste the CPU time and will prevent the foreground thread from hanging while doing the operations. In any case, you need to think about what version you might want.
...
Keep-alive header clarification
...sistent connection for some advantages and disadvantages, such as:
Lower CPU and memory usage (because fewer connections are open simultaneously).
Enables HTTP pipelining of requests and responses.
Reduced network congestion (fewer TCP connections).
Reduced latency in subsequent requests (no hands...
converting Java bitmap to byte array
...etter is the rewind option from @Ted Hopp — compressing it is a waste of CPU unless your goal is an encoded image....
– Kaolin Fire
Apr 8 '13 at 22:34
40
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How to keep a .NET console app running?
..., especially when you are forcing the code to recheck variables. It wastes CPU resources and slows down your program.
I would definitely say the first one.
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App Inventor 2 接入百度网盘API · App Inventor 2 中文网
...采用这种方案。
直接用python或curl命令测试下来，是一点问题都没有，就 App Inventor 2 搞不定，只能说ai2可发挥空间有限，默认采用了trunked协议，无法指定HTTP1.0，设置请求标头也修改不了，百度网盘把这个拦住了，直接上传百度...
互联网造车运动 - 资讯 - 清泛网 - 专注C/C++及内核技术
...长达十年之久，此外，特斯拉还学习了丰田的质量控制和问题追溯体系，还有奔驰的测试流程，传统汽车企业的支持是特斯拉成功的左右手，这都需要长时间去消化。互联网企业一时半会难以造出获得消费者认可的汽车。
不过...
php: determine where function was called from
...> ->
)
)
I test the speed on Lenovo laptop: Intel Pentiom CPU N3530 2.16GHz, RAM 8GB
global $times;
$start = microtime(true);
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1);
$times[] = microtime(true) - $start;
Results:
count($times): 97
min: 2.6941299438477E-5
max...