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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...路径,几乎总是花费时间较多的那些,所以值得我们重点研究;否则的话,这个软件的构造方式必然存在很大的问题。 火焰图其实可以拓展到其他维度,比如刚才我们讲的火焰图是看程序运行在 CPU 上的时间在所有代码路径上...
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...是达到抛砖引玉的作用,很多东西细究下去都是值得深入研究的,再加上性能优化本来就是一个需要综合考量的任务,不是说会了本文哪一点就能做性能分析了,需要面面俱到才可高效定位问题原因。 2 应用UI性能问题分析 UI...
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Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

... TDokanFileInfo = _DOKAN_FILE_INFO; PDokanFileInfo = PDOKAN_FILE_INFO; 研究了几天,发现只需要实现少数几个回调函数就可以了: 1.FindFiles: 在这个回调函数里可以实现从远程目录同步其下的所有目录及文件。当然也可以在OpenDirectory回调函...
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Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术

...上的程序员好像也是用C语言的最多,所以Windows所有编程资料发布的格式也是C格式。 上面的声明用汇编的格式来表达就是: MessageBox Proto hWnd:dword,lpText:dword,lpCaption:dword,uType:dword 上面最后一句Library:Use User32.lib则说明了...
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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

...ange,Ctrl+R) 用该命令产生当前模型的灵敏性分析报告:研究当目标函数的费用系数和约束右端项在什么范围(此时假定其它系数不变)时,最优基保持不变。灵敏性分析是在求解模型时作出的,因此在求解模型时灵敏性分析是...
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NumPy array initialization (fill with identical values)

... 7 Answers 7 Active ...
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TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...mael Ripoll for his suggestions and reviews * * Copyright (C) 2008, 2007, 2006, 2005, 2004 * * This code is released using a dual license strategy: GPL/LGPL * You can choose the licence that better fits your requirements. * * Released under the terms of the GNU General Public License V...
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Get the week start date and week end date from week number

...(dd, -(DATEPART(dw, WeddingDate)-1), WeddingDate) [WeekStart] DATEADD(dd, 7-(DATEPART(dw, WeddingDate)), WeddingDate) [WeekEnd] You probably also want to look at stripping off the time from the date as well though. share ...
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Expand a random range from 1–5 to 1–7

...1 to 5, write a function which produces a random integer in the range 1 to 7. 78 Answers ...
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Datetime - Get next tuesday

... if it's already Tuesday": DateTime today = DateTime.Today; // The (... + 7) % 7 ensures we end up with a value in the range [0, 6] int daysUntilTuesday = ((int) DayOfWeek.Tuesday - (int) today.DayOfWeek + 7) % 7; DateTime nextTuesday = today.AddDays(daysUntilTuesday); If you want to give "a week...