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Why is volatile not considered useful in multithreaded C or C++ programming?
...g is to use a memory barrier, which indicates both to the compiler and the CPU that no memory access may be reordered across this point. Placing such barriers around our volatile variable access ensures that even non-volatile accesses won't be reordered across the volatile one, allowing us to write ...
Assembly code vs Machine code vs Object code?
...ine code is binary (1's and 0's) code that can be executed directly by the CPU. If you were to open a machine code file in a text editor you would see garbage, including unprintable characters (no, not those unprintable characters ;) ).
Object code is a portion of machine code not yet linked into a ...
Subversion钩子 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...一个PHP项目使用Subversion做版本控制，使用中发现了一些问题，比如程序员不写日志，或者提交的文件有BOM，或者提交的文件有语法错误，或者提交的文件不符合编码规范等等，这些问题都可以利用pre-commit钩子来解决，实际上已...
Discuz X 首页白板解决之道 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...在合适位置打印特定内容然后exit(0);查看结果，分析出现问题的 1、开启Debug，及url后面跟 &debug=yes，也是网上最多的方法，但可能往往没有效果。
2、排除法，代码一段段的排查，在合适位置打印特定内容然后exit(0);查看结果，...
提问 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...sp;使用下面程序时，为什么每次都会把实际数字设为0？
问题出在你的判断逻辑上：
这里和你拼接的字符串比较，非常容易出错，比如多了或少了一个空格等。实际编程中判断最好使用数字，也就是你选择了难度等级是第几...
最大装载数不显示计算数值 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...数输出+（高数输出×横数输出）÷2＝最大装载数
出现问题不显示计算数字代码块没有问题，经过测试是能够正确计算出除法结果的，测试时主要被除数要大于除数，否则计算结果0.xxx 向下取整就是0，干扰测试结果。。。之后...
How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]
...programs, regardless of whether they are compiled for x32 or x32/x64 ("All CPU"). Appears as if every .NET executable has a 32-bit native header, and it calls the appropriate 32-bit or 64-bit .NET runtime when its invoked.
– Contango
Mar 2 '11 at 12:16
...
LinkedIn联合创始人：初创企业早期别花钱买用户 - 资讯 - 清泛网 - 专注C/C...
...程是如何运作的”的数据以及信息，虽然他们设计的招聘问题很有趣，但事实上经过专业训练的HR都不会提出(Google报告里)这些问题，这些问题的设计者，要是很熟悉HR问的问题但又不拘泥于传统观念的人，他也必须是要理解招聘...
Context switches much slower in new linux kernels
...ance problem in recent kernels has to do with the switch to the intel_idle cpuidle driver from acpi_idle, the driver used in older kernels. Sadly, the intel_idle driver ignores the user's BIOS configuration for the C-states and dances to its own tune. In other words, even if you completely disable a...
fastest (low latency) method for Inter Process Communication between Java and C/C++
...e send/received,
2 Java processes just spawned, without assigning specific CPU cores with taskset:
TCP - 25 microseconds
Named pipes - 15 microseconds
Now explicitly specifying core masks, like taskset 1 java Srv or taskset 2 java Cli:
TCP, same cores: 30 microsecond...