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Is Meyers' implementation of the Singleton pattern thread safe?
...
In C++11, it is thread safe. According to the standard, §6.7 [stmt.dcl] p4:
If control enters
the declaration concurrently while the variable is being initialized, the concurrent execution shall wait for completion of the initialization.
GCC and VS support for the feature (Dynamic Initiali...
[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...重载。例如：
_bstr_t b = bstrText;
char* lpszText2 = b;
4、char*转换成BSTR
方法一，使用SysAllocString等API函数。例如：
BSTR bstrText = ::SysAllocString(L"Test");
BSTR bstrText = ::SysAllocStringLen(L"Test",4);
BSTR bstrText = ::SysAllocStringByteLen("Tes...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...8 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网移动版 - ...
...8 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
...
Linux bcc tools使用总结（持续更新） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...8 0 /usr/bin/tail -v -n 16 /proc/net/dev
1.000 df 12104 6578 0 /usr/bin/df
1.002 who 12105 6578 0 /usr/bin/who
1.004 sleep 12106 6578 0 /usr/bin/sleep 1
2.006 head 12107 6578 0 /usr/bin/head -v -n 8 /proc/meminfo
...
error C2872: “count”: 不明确的符号 - C/C++ - 清泛网 - 专注C/C++及内核技术
...确的符号error C2872: count: 不明确的符号 可能是conflict.cpp(4) : int count 或 C: Program Files Microsoft Visual Studio 11.0 V...error C2872: “count”: 不明确的符号
可能是“conflict.cpp(4) : int count” 或 “C:\Program Files\Microsoft Visual Studio 11.0\VC\INCLUDE\xu...
C++11 rvalues and move semantics confusion (return statement)
...tor<int> return_vector(void)
{
std::vector<int> tmp {1,2,3,4,5};
return tmp;
}
std::vector<int> &&rval_ref = return_vector();
The first example returns a temporary which is caught by rval_ref. That temporary will have its life extended beyond the rval_ref definiti...
Why does C++11 not support designated initializer lists as C99? [closed]
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answered Sep 11 '13 at 2:42
bames53bames53
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cpuid汇编指令 - C/C++ - 清泛网 - 专注C/C++及内核技术
...令cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版本开始就存在了。 CPUID这条指令，除了用于识别CPU（CPU的型号...cpuid指令
cpuid就是一条读取CPU各种信息的一条指令，大概是从80486的某个版本开始就存在了。 CP...
How can I create directory tree in C++/Linux?
...0-2020
@(#)Derivation: mkpath.c 1.16 2020/06/19 15:08:10
*/
/*TABSTOP=4*/
#include "posixver.h"
#include "mkpath.h"
#include "emalloc.h"
#include <errno.h>
#include <string.h>
/* "sysstat.h" == <sys/stat.h> with fixup for (old) Windows - inc mode_t */
#include "sysstat.h"
t...