runtime | 易学教程

二、创建进程和线程

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1、在 Windows 操作系统中创建进程　　在 windows 操作系统中，我们创建一个进程通常就是打开某个应用软件，这便在电脑中创建了一个进程。更原始一点的，我们在命令提示符中来做（我们以打开记事本这个进程为例）：　　第一步：windows+R,输入cmd,打开 cmd 命令提示符　　　　　　　　第二步：在命令提示符中输入 notepad,按 Enter 键便会弹出记事本应用软件　　　　　　 PS：常用的windows 应用软件命令　　　　1、regedit：打开注册表编辑器　　　　2、control：打开控制面板　　　　3、msconfig：打开系统配置　　　　4、gpedit.msc：打开本地组策略　　　　5、explorer：打开资源管理器　　　　6、taskmgr：任务管理器　　　　7、logoff：直接注销计算机　　　　8、osk：打开屏幕键盘　　　　9、calc：打开计算器　　　　10、mspaint：调出画图软件　　　　11、dxdiag：查看电脑详细配置信息　　　　12、mstsc：打开远程桌面连接　　　　13、systeminfo：查看计算机基本信息　　　　14、notepad：打开记事本回到顶部 2、在 Java 中创建进程第一种方法：通过 Runtime 类的 exec() 方法来创建进程 1 2 3 4 5

Make a simple CRT0 in C or assembly

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问题 I'm back with C/C++ and ASM and I want to play a little bit with fire. I found out that when you compile and link code into an executable for Windows it is dynamically linked to some libraries that must exists on any computer where that application is expected to run. You can specify the compiler to not link against them and create your own libraries for that. Apart from that (and please, correct me if I'm wrong in everything I say here) there's an object file that is always complied and

Runtime Library mis-matches and VC++ - Oh, the misery!

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问题 It seems that all my adult life I've been tormented by the VC++ linker complaining or balking because various libraries do not agree on which version of the Runtime library to use. I'm never in the mood to master that dismal subject. So I just try to mess with it until it works. The error messages are never useful. Neither is the Microsoft documentation on the subject - not to me at least. Sometimes it does not find functions - because the name-mangling is not what was expected? Sometimes it

spring add datasource at runtime

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问题 I am working on a spring boot multi-tenant application with database per tenant strategy. Requirement is that to add new databases at runtime which means I have to create new datasource objects dynamically. I also looked upon Spring's AbstractRoutingDataSource but in needs pre-defined datasources. So I just want to know how to add/remove datasource without restarting application server. Thanks in advance. 回答1: I finally managed to get things working straight. For someone having same issue,

How to achieve dynamic polymorphism (run-time call dispatch) on unrelated types?

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问题 GOAL: I would like to achieve type-safe dynamic polymorphism (i.e. run-time dispatch of a function call) on unrelated types - i.e. on types which do not have a common base class . It seems to me that this is achievable, or at least theoretically sound. I will try to define my problem more formally. PROBLEM DEFINITION: Given the following: two or more unrelated types A1, ..., An , each of which has a method called f , possibly with different signatures, but with the same return type R ; and a

Runtime exec doesn't show results

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问题 I'm trying to get the result of a java command in netbeans, using the codes below: Runtime rt = Runtime.getRuntime(); Process p = null; try { String cmd = "javac"; // OR String cmd = "cmd /c javac"; // OR String cmd = "java -cp myjar com.my.sample"; p = rt.exec(cmd); p.waitFor(); BufferedReader br=new BufferedReader(new InputStreamReader(p.getInputStream())); String line = null; while ((line = br.readLine()) != null) { System.out.println(line); } } catch(Exception e){ // } and expects to have

Standalone VS 2010 C++ Program

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问题 it's been a long while since I've used VS 2010 and C++, and as I'm getting back to using it, I'm running into the same problems that plagued me last year: the exe's that I compile do not run well on older machines that do not have the correct C++ runtimes. I do not even know what link to give them, and I told them to install this after they had an error that said "The program can't start because MSVCR100.dll is missing from your computer. Try Reinstalling the program to fix this problem.

Standalone VS 2010 C++ Program

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.NET Core 2.0及.NET Standard 2.0

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.NET Core 2.0的发布时间，.NET Core 2.0预览版及.NET Standard 2.0 Preview大概在5月中旬或下旬发布。 .NET Core 2.0正式版本发布时间大约在Q3 2017发布，具体我估计大概在8月份左右。同时一起发布的也就是.NET Standard 2.0。 Milestone Release Date .NET Core 2.0 Preview Q2 2017 .NET Standard 2.0 Preview Q2 2017 .NET Core 2.0 Q3 2017 .NET Standard 2.0 Q3 2017 微软计划在5月10日将corefx 中标记为2.0 的bug 完全修复。使其顺利发布 .NET Core 2.0 Preview 和 .NET Standard 2.0 Preview 。以下为具体链接： Announcement: Driving towards zero 2.0 bugs by 2017/5/10 (ZBB) ZBB (zero bug bounce)。大家也可以参与其中，贡献自己的一份力量。 .NET Core 2.0版最低操作系统支持 OS Version Architectures Configurations Notes Windows Client 7 SP1+ x64, x86

How to generate or modify a PHP class at runtime?

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问题 The schmittjoh/cg-library seems what I need, but there is no documentation at all. This library provides some tools that you commonly need for generating PHP code. One of it's strength lies in the enhancement of existing classes with behaviors. Given A class: class A {} I'd like to modify, at runtime of course and with some cache mechanism, class A , making it implementing a given interface: interface I { public function mustImplement(); } ... with a "default" implementation for method