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控件重绘函数/消息OnPaint,OnDraw,OnDrawItem,DrawItem的区别 - C/C++ - 清...
...时对控件的绘制,上面介绍的差不多了,还有一个CView的问题,也就是OnPaint和Ondraw的关系,其实这个很简单,CView::OnPaint()的源码如下:
void CView::OnPaint()
{
CPaintDC dc(this);
OnPrepareDC(&dc);
OnDraw(&dc)
}
...
How can I monitor the thread count of a process on linux?
...ou should subtract 1 from it because it prints a line like USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND for table header.
– AhmetB - Google
Apr 27 '12 at 23:40
...
Replacing a 32-bit loop counter with 64-bit introduces crazy performance deviations with _mm_popcnt_
...ral erratum and will not emit code that compensates for it.)
Why does the CPU have such a false dependency?
We can speculate: it runs on the same execution unit as bsf / bsr which do have an output dependency. (How is POPCNT implemented in hardware?). For those instructions, Intel documents the ...
PDB文件:每个开发人员都必须知道的 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...较简单,因为PDB和binay在相同的地方,通常地我们遇到的问题都是关于public build。
所有的的开发人员需要知道的最重要的事情是”PDB文件跟源代码同样的重要“, 没有PDB文件,你甚至不能debugging。对于public build,需要symbol serv...
Recommended method for escaping HTML in Java
...ers when the OP asked to escape the 4 relevant characters? You are wasting CPU and memory.
– David Balažic
Sep 20 '18 at 10:51
2
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How to fix “ImportError: No module named …” error in Python?
...
Thanks for saving me sometime.
– cpu_meltdown
Mar 31 '17 at 13:24
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C# Stream流使用总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...要关闭。
2.把流中数据加载到内存时要考虑内存溢出等问题。
C# Stream
Comparison of Android networking libraries: OkHTTP, Retrofit, and Volley [closed]
...ding request, dealing with cache expiry without relying on server headers, etc.
RoboSpice does more outside of UI Thread : volley will deserialize your POJOs on the main thread, which is horrible to my mind. With RS your app will be more responsive.
In terms of speed, we definitely need metrics. RS...
C语言之父辞世引发“分号”悼念 - 创意 - 清泛网 - 专注C/C++及内核技术
...要一门高级计算机语言做工具,为了解决程序的可移植性问题,肯·汤普逊和丹尼斯·里奇决定对它进行简单改进,形成 NB语言。但NB在Unix的移植方面依然不尽人意,此后里奇又对NB语言做了改进,C语言诞生。
这被计算机界认为...
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...
