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c++ volatile关键字简析 - C/C++ - 清泛网 - 专注C/C++及内核技术
c++ volatile关键字简析volatile防范冲突，提高效率。降低CPU Cache Line锁冲突的几率。不同于普通变量在于：CPU缓存中有值的话，也得从内存中重新加载到缓存（普通变量不会）；即认为寄存器值不可靠， volatile 防范冲突，提高效...
Best way to iterate through a Perl array
...u-thread-multi
I get:
Benchmark: running 1, 2, 3, 4, 5, 6 for at least 3 CPU seconds...
1: 3 wallclock secs ( 3.16 usr + 0.00 sys = 3.16 CPU) @ 12560.13/s (n=39690)
2: 3 wallclock secs ( 3.18 usr + 0.00 sys = 3.18 CPU) @ 7828.30/s (n=24894)
3: 3 wallclock secs ( 3...
Volatile vs. Interlocked vs. lock
...at all. The point of volatile is that multiple threads running on multiple CPUs can and will cache data and re-order instructions.
If it is not volatile, and CPU A increments a value, then CPU B may not actually see that incremented value until some time later, which may cause problems.
If it is vol...
How do I fix “Failed to sync vcpu reg” error?
...nstance, and my emulator started right up. FYI my virtual device was using CPU/ABI=x86, and I was running on a macbook pro.
– guyland123
Nov 20 '15 at 13:45
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高并发服务端分布式系统设计概要 - C/C++ - 清泛网 - 专注C/C++及内核技术
...拆分），并时刻不要忘记备份、扩展、意外处理等讨厌的问题。说起来都比较简单，但设计和实现起来，就会比较困难。以前我的文章，都是“从整到零”的方式来设计一个系统，这次咱们就反着顺序来。
那我们首先来看，我...
窝窝与众美联合并 新公司命名“众美窝窝” - 资讯 - 清泛网 - 专注C/C++及内核技术
...并殊途同归，但更直接，并且在O2O平台用户忠诚度普遍不高的行业环境下，窝窝这种合并获得的用户，其忠诚度要高得多，因为用户最终忠于的还是商家。
看点二 并购而非入股 做大想象空间
窝窝对众美联本次的股权合作是并...
Generating a unique machine id
...FirmwareTables and GetSystemFirmwareTable.
IIRC, the "unique id" from the CPUID instruction is deprecated from P3 and newer.
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Difference between 'self' and 'total' in Chrome CPU Profile of JS
...hat is the difference between the 'self' and 'total' columns in the Chrome CPU profiling of JS code?
2 Answers
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...GO使用指南LINGO使用指南LINGO是用来求解线性和非线性优化问题的简易工具。LINGO内置了一种建立最优化模型的语言，可以简便地表达大规模问题，利用LIN...
LINGO是用来求解线性和非线性优化问题的简易工具。LINGO内置了一种建立...
Programmatically find the number of cores on a machine
... lines):
Win32
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
int numCPU = sysinfo.dwNumberOfProcessors;
Linux, Solaris, AIX and Mac OS X >=10.4 (i.e. Tiger onwards)
int numCPU = sysconf(_SC_NPROCESSORS_ONLN);
FreeBSD, MacOS X, NetBSD, OpenBSD, etc.
int mib[4];
int numCPU;
std::size_t l...