runtime

go package学习——runtime

由 江枫思渺然 提交于 2019-12-09 22:35:50
package runtime主要是与go的runtime系统进行互动操作，例如控制goroutine的函数等。它也包含 reflect package 所需的低等级信息。 1. Environment Variables GOGC: 设置初始的垃圾回收百分比。默认值为 GOGC=100 ；如果设置 GOGC=off，则会完全关闭垃圾回收功能。 runtime/debug package的SetGCPercent 函数可以在运行时改变其值。 GOGCTRACE: 从垃圾回收处控制debug输出。 GOMAXPROCS : 控制同时运行用户态go程序的操作系统线程数。 GOTRACEBACK : 控制错误导致的输出数量。 GOARCH, GOOS, GOPATH, GOROOT : 386或amd64、linux或windows、开发目录、安装目录。 Index Constants Variables func BlockProfile(p []BlockProfileRecord) (n int, ok bool) func Breakpoint() func CPUProfile() []byte func Caller(skip int) (pc uintptr, file string, line int, ok bool) func Callers(skip int, pc

Java中的注解

由 江枫思渺然 提交于 2019-12-09 22:18:31
1.注解的概念 （1）什么是注解？ Annotation是从JDK5.0开始引入的新技术 （2）注解的作用： 不是程序本身 , 可以对程序作出解释. 可以被其他程序(比如:编译器等)读取 （3）注解的格式： 注解是以"@注释名"在代码中存在的 , 还可以添加一些参数值 例 如:@SuppressWarnings(value=“unchecked”). （4）注解的使用: 可以附加在 package , class , method , field 等上面 , 相当于给他们添加了额外的辅助信息, 我们可以通过反射机制编程实现对这些元数据的访问 2.元注解：元注解就是注解的根，也就是注解的注解。 （1）@Target : 用于描述注解的使用范围(即:被描述的注解可以用在什么地方) 类型 使用位置 ElementType.ANNOTATION_TYPE 可以给一个注解进行注解 ElementType.CONSTRUCTOR 可以给构造方法进行注解 ElementType.FIELD 可以给属性进行注解 ElementType.LOCAL_VARIABLE 可以给局部变量进行注解 ElementType.METHOD 可以给方法进行注解 ElementType.PACKAGE 可以给一个包进行注解 ElementType.PARAMETER 可以给一个方法内的参数进行注解

How to list all calls of a function at runtime?

由 杀马特。学长 韩版系。学妹 提交于 2019-12-09 21:51:26
问题 Is there any way to list (show in VS, write to file) all callers (objects, functions) of a function while the program is running? Possibly using the debugger? I need to record all calls (including callers) of a function from the launch of the program to its termination. A simple scan of the source code or the binary does not do the job because the program could operate as a server which receives requests to call the desired function. If Visual Studio does not provide this feature, are there

Compile time vs run time errors [duplicate]

由 喜欢而已 提交于 2019-12-09 18:46:00
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Runtime vs Compile time How should I know whether a specific line of code in Java may throw a compile time or run-time error? Assuming that the specific line of code anyway throws and error. 回答1: In Eclipse, compile time errors will be underlined in red. A compile time error is an error that is detected by the compiler. Common causes for compile time errors include: Syntax errors such as missing semi-colon or

Adding/modifying annotations in a java project

由 最后都变了- 提交于 2019-12-09 17:56:28
问题 We have a library of Java code that we intend to use across projects. Some of these projects will require having annotations added to the Java objects in this library (i.e. in one project, these objects will be used in a JAX-RS servlet implementation so they need to be annotated with JAXB, JSON etc annotations). The issue I am having is that I could not figure out how to add these annotations without changing the original library. Consider this example: public class MyClass { private String

简单介绍托管执行和 CLI

由 痞子三分冷 提交于 2019-12-09 16:50:06
[doc] 处理器不能直接解释程序集。程序集用的是另一种语言，即公共中间语言（Common Intermediate Language，CIL），或称为中间语言（IL） 1 。 C# 编译器将 C# 源代码文件转换成中间语言。为了将 CIL 代码转换成处理器能理解的机器码，还要完成一个额外的步骤（通常在运行时进行）。该步骤涉及 C# 程序执行的一个重要元素：VES（Virtual Execution System，虚拟执行系统）。VES 也称为运行时（runtime）。 它根据需要编译 CIL 代码，这个过程称为即时编译或 JIT 编译（just-in-time compilation）。如代码在像“运行时”这样的一个“代理” 的上下文中执行，就称为托管代码（managed code），在“运行时”的控制下执行的过程则称为托管执行（managed execution）。 之所以 称为“托管”，是因为“运行时”管理着诸如内存分配、安全性和 JIT 编译等方面，从而控制了主要的程序行为。执行时不需要“运行时”的代码称为本机代码（native code）或非托管代码（unmanaged code）。 说明： “运行时”既可能指“程序执行的时候”，也可能指“虚拟执行系统”。为明确起见，用“执行时”表示“程序执行的时候”，用“运行时”表示负责管理 C# 程序执行的代理。 2 “运行时

VC++: KB971090 and selecting Visual C Runtime DLL dependencies

由 允我心安 提交于 2019-12-09 15:59:03
问题 As you might know, Microsoft recently deployed a security update for Visual Studio: KB971090. Among other things, this updated the Visual C Runtime DLL from version 8.0.50727.762 to 8.0.50727.4053. So after this update, everything I compile that uses the runtime dynamically linked, gets their dependencies updated to the new runtime. Of course, for new applications it is fine to update to the new, presumably more secure, version. But I would also like to be able to retain the old dependency -

Do fluent interfaces significantly impact runtime performance of a .NET application?

由 ＊爱你＆永不变心＊ 提交于 2019-12-09 15:29:14
问题 I'm currently occupying myself with implementing a fluent interface for an existing technology, which would allow code similar to the following snippet: using (var directory = Open.Directory(@"path\to\some\directory")) { using (var file = Open.File("foobar.html").In(directory)) { // ... } } In order to implement such constructs, classes are needed that accumulate arguments and pass them on to other objects. For example, to implement the Open.File(...).In(...) construct, you would need two

How to override a method in framework's class (runtime)

由 百般思念 提交于 2019-12-09 13:40:00
问题 problem : framework will cache the image data when above: [UIImage imageNamed:] I don't want the caching happen,so I can replace it by [UIImage imageOfContentOfFile:] Seems solved,but after my tests,in xib's instantiate progress, framework uses imageNamed: rather than imageOfContentOfFile . That is, images loaded by xib still cached. So I try to override the UIImage's imageNamed: method, make all this method DO NOT CACHE. --try1. category: @implementation UIImage (ImageNamedNoCache) +

System.Runtime.InteropServices.COMException 检索COM类工厂中CLSID{xxxxxxxxx}的组件时失败解决方法...

由 人走茶凉 提交于 2019-12-09 11:42:39
iis7.5中设定应用程序池中《进程模型》中《标识》为localSystem 提示：System.Runtime.InteropServices.COMException: 命令失败 在《组件服务》中配置 《Microsoft Word 97 - 2003》的 《标识》选择为《下列用户》（开始为 《交互式》，但这个方式可以理解为需要有登录的账号活动，所以不可行） 来源： CSDN 作者： weixin_33795833 链接： https://blog.csdn.net/weixin_33795833/article/details/85608940
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