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C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...
++cnt_;
return this;
}
void Deref() {
if (--cnt_ == 0) {
delete this;
}
}
private:
std::unique_ptr<T> ptr_;
std::atomic_uint32_t cnt_;
};
仔细观察可以发现：
每一次的读取操作对应引用计数中增加的数值 1；
当所有的...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...
302
Generically, a covariant type parameter is one which is allowed to vary down as the class is su...
Initializing a member array in constructor initializer
... assignments in the body. This is what boost::array does.
Does the C++03 standard say anything special about initializing aggregates (including arrays) in ctor initializers? Or the invalidness of the above code is a corollary of some other rules?
A mem-initializer uses direct initialization....
XSD - how to allow elements in any order any number of times?
...|
edited Jan 12 '15 at 15:00
MikeD
4,37411 gold badge2222 silver badges3939 bronze badges
answered Feb 1...
How to get screen width without (minus) scrollbar?
...|
edited Apr 11 '16 at 22:01
answered Dec 1 '11 at 10:54
Ro...
How to pass macro definition from “make” command line arguments (-D) to C source code?
...
100
Call make command this way:
make CFLAGS=-Dvar=42
And be sure to use $(CFLAGS) in your compil...
Fastest way to convert Image to Byte array
...
answered May 19 '14 at 7:05
NewtNewt
52944 silver badges22 bronze badges
...
How do I move the turtle in LOGO? [closed]
...BACK ## [BK] - Move turtle back
BACKGROUND ## [BG] - Set Background color (0-15)
0 - Black
1 - White
2 - Red
3 - Cyan
4 - Purple
5 - Green
6 - Blue
7 - Yellow
8 - Orange
9 - Brown
10 - Light Red
11 - Grey 1
12 - Grey 2
13 - Light Green
14 - Light Blue
15 - Grey 3
CLEARSCREEN [CS] - Clear Scre...
How to convert std::string to LPCWSTR in C++ (Unicode)
... int slength = (int)s.length() + 1;
len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0);
wchar_t* buf = new wchar_t[len];
MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len);
std::wstring r(buf);
delete[] buf;
return r;
}
std::wstring stemp = s2ws(myStr...
UIScrollView Scrollable Content Size Ambiguity
...tentView);
In this contentView, set top, bottom, left and right margins to 0 (of course from the scrollView which is the superView); Set also align center horizontally and vertically;
Finished.
Now you can add all your views in that contentView, and the contentSize of the scrollView will be autom...