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Why does my application spend 24% of its life doing a null check?

...\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7...
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What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an

... in 64-bit code, this is exactly what happens: stackoverflow.com/questions/46087730/…. It zeros r8-r11, and works exactly like when run in a 32-bit process. In that Q&A I have an example showing it working, or failing with truncating a pointer. And I also dug into the kernel source to show ...
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Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P

...s. Before the change over we had a JAR that was running fine on Java 1.7 x64 along with JRE 7. When we moved over to the new server our JAR was running alright, but then one of the server admins "updated" our Java to an older version and uninstalled the one we were using. Don't ask me why, I don'...
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Cannot open include file 'afxres.h' in VC2010 Express

... Kirill V. LyadvinskyKirill V. Lyadvinsky 87.3k2222 gold badges125125 silver badges208208 bronze badges ...
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Linux 进程卡住了怎么办? - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...fffffff8122169e>] SyS_newstat+0xe/0x10 [<ffffffff8186281b>] entry_SYSCALL_64_fastpath+0x22/0xcb [<ffffffffffffffff>] 0xffffffffffffffff 这时候按 Ctrl+C 也不能退出。 root@localhost:~# ls /jfs ^C ^C^C^C^C^C 但是用 strace 却能唤醒它,并且开始处理之前的中断信...
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MySQL Workbench: How to keep the connection alive

...me out (in seconds): The latter is where you'll want to up the limit from 600 to something a bit more. share | improve this answer | follow | ...
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2016年最适合小投资的10个创业项目 - 资讯 - 清泛网 - 专注C/C++及内核技术

...道该如何抉择。小投资创业项目是不是真的可以赚钱,F600创业网资深顾问陈大伟告诉大家:投资选项目要根据市场的需求和自身的情况来决定。 项目一、 绿色干洗店 新一代的绿色干洗店却彻底解决了干洗店的投资大、...
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How to find if a native DLL file is compiled as x64 or x86?

I want to determine if a native assembly is complied as x64 or x86 from a managed code application ( C# ). 11 Answers ...
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Why does MSBuild look in C:\ for Microsoft.Cpp.Default.props instead of c:\Program Files (x86)\MSBui

...cation using their command line tool, which calls MSBuild. I'm using Win 7 64-bit, VS2013 express, cocos2d-x version 3.3, .NET Framework 4.5 installed. I fixed the problem by setting the following before running the cocos.py publish command: SET VCTargetsPath=C:\Program Files (x86)\MSBuild\Microso...
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Is there a way to detect if an image is blurry?

...3, 1) &lt;&lt; -1, 2, -1); cv::Mat G = cv::getGaussianKernel(3, -1, CV_64F); cv::Mat Lx; cv::sepFilter2D(src, Lx, CV_64F, M, G); cv::Mat Ly; cv::sepFilter2D(src, Ly, CV_64F, G, M); cv::Mat FM = cv::abs(Lx) + cv::abs(Ly); double focusMeasure = cv::mean(FM).val[0]; ...