Without getting into the details of why, I'm looking for a clean (as possible) way to replace kernel functions and system calls from a loadable module. My initial idea was to write some code to override some functions, which would take the original function (perhaps, if possible, call the function), and then add some of my own code. The key is that the function that I write has to have the
没有深入了解为什么，我正在寻找一种干净（尽可能）的方式来替换来自可加载模块的内核函数和系统调用。 我最初的想法是编写一些代码来覆盖一些函数，这些函数将采用原始函数（也许，如果可能的话，调用函数），然后添加一些我自己的代码。 关键是我写的函数必须具有原始函数的名称，所以其他代码在尝试访问它时将访问我的代码。 我可以很容易地（相对）直接在内核中执行此操作，只需将我的代码放入适当的函数中即可，但是我
Is it possible to create thread local data in a linux kernel module? I need to store some data for each process/thread calling my module. Is there an easy way of using thread local data, or do I have to resort to writing a hash map which uses the pid of the current process as a key? Assuming the interface to you kernel module is a character device driver, then you have a private_data field i
是否有可能在Linux内核模块中创建线程本地数据？ 我需要为调用我的模块的每个进程/线程存储一些数据。 有没有简单的方法来使用线程本地数据，或者我不得不求助于编写一个使用当前进程的PID作为关键字的哈希映射？ 假设你的内核模块的接口是一个字符设备驱动程序，那么你在文件struct中有一个private_data字段（类似于用户空间文件描述符）。 只需在打开的文件操作中为它分配一个指向你选择的结构的指针。 它不完全是线
I want to know the CPU usage of a specific service in C#. PerformanceCounter works fine with process: PerformanceCounter counter = new PerformanceCounter("Process", "% Processor Time", "myprocess", true); double result = counter.NextValue(); but not with services: PerformanceCounter counter = new PerformanceCounter("Service", "% Processor Time", "myservice", true); double result =
我想知道C＃中特定服务的CPU使用情况。 PerformanceCounter可以正常工作： PerformanceCounter counter = new PerformanceCounter("Process", "% Processor Time", "myprocess", true); double result = counter.NextValue(); 但不包括服务： PerformanceCounter counter = new PerformanceCounter("Service", "% Processor Time", "myservice", true); double result = counter.NextValue(); 性能计数器的正确名
I was wondering what is the best way to convert a 24-bit RGB color (8 bits per color) into an 8-bit color (2bits Blue, 3 Green, 3 Red). I'd like C code for doing this. 8 bit RGB is normally an indexed (palettized) color format, see Palette (computing). The way you described it though, getting 8 bpp out of 24 bpp is pretty straightforward - you would need to strip least significant bits a
我想知道什么是将24位RGB颜色（每种颜色8位）转换为8位颜色（2位蓝色，3绿色，3红色）的最佳方法。 我想要C代码来做到这一点。 8位RGB通常是索引（palettized）颜色格式，请参阅调色板（计算）。 你描述它的方式，从24 bpp中获得8 bpp非常简单 - 你需要去掉最低有效位，并将这些位合并为单个字节值，每个像素。 AFAIK它不是标准或众所周知的像素颜色表示。 不是在C中，而是在JavaScript中。 encodedData = (Math.floor((
I've color values coming in six bits, with two bits each for red, green and blue. So black would be represented as binary 000000 , red 110000 , blue 000011 , yellow 111100 and so on. I have to convert this color into to 24 bit rgb value to pass it to the graphics layer (DirectFB). Since three (binary 11) is to become 255 (0xFF), I used the following formula with 85 (=255/3) as the convers
我的颜色值有六位，红色，绿色和蓝色各有两位。 因此，黑色将被表示为二进制000000 ，红色110000 ，蓝000011 ，黄色111100等。 我必须将此颜色转换为24位rgb值，以将其传递到图形层（DirectFB）。 由于三（二进制11）将变为255（0xFF），因此我使用85（= 255/3）作为转换因子的下列公式。 r = (color_6bit >> 4) * FACTOR; g = ((color_6bit >> 2) & 0x3) * FACTOR; b = (color_6bit & 0x3) * FACTOR;
How can I convert the following? 2934 (integer) to B76 (hex) Let me explain what I am trying to do. I have User IDs in my database that are stored as integers. Rather than having users reference their IDs I want to let them use the hex value. The main reason is because it's shorter. So not only do I need to go from integer to hex but I also need to go from hex to integer. Is there
我如何转换以下内容？ 2934（整数）到B76（十六进制） 让我解释我正在尝试做什么。 我有我的数据库中的用户ID存储为整数。 而不是让用户参考他们的ID我想让他们使用十六进制值。 主要原因是因为它更短。 所以我不仅需要从整数到十六进制，而且还需要从十六进制转换为整数。 有没有简单的方法在C＃中做到这一点？ // Store integer 182 int intValue = 182; // Convert integer 182 as a hex in a string variable str
I'll explain all the steps I've done so far and conclude with my question. using OpenSSL 1.0.1e-fips 11 Feb 2013 Generating a private and public key openssl genrsa -des3 -out private.pem 2048 openssl rsa -in private.pem -outform PEM -pubout -out public.pem signing a message with digest and private key openssl dgst -sha256 -sign private.pem -out message.secret message.txt at this p
我会解释我迄今为止所做的所有步骤，并以我的问题结束。 使用OpenSSL 1.0.1e-fips 2013年2月11日 生成私钥和公钥 openssl genrsa -des3 -out private.pem 2048 openssl rsa -in private.pem -outform PEM -pubout -out public.pem 用摘要和私钥签名消息 openssl dgst -sha256 -sign private.pem -out message.secret message.txt 在这一点上，我有一个公钥，一个签名消息（带摘要）和原始消息。 第1部分 - 使用CLI（这
IDisposable pattern is expensive to implement. I've counted 17 lines of code before even starting to actually dispose resources. Eric Lippert recently wrote a blog post bringing up an interesting point: any time a finalizer runs, it is a bug. I think it make perfect sense. If the IDisposable pattern is always followed, Finalizer should always be suppressed. It will never have a chance t
一次性实施模式非常昂贵。 在开始实际处理资源之前，我已经计算了17行代码。 Eric Lippert最近撰写了一篇博文，提出了一个有趣的观点：任何时候终结者运行，这都是一个错误。 我认为这很有道理。 如果始终遵循IDisposable模式，则始终应终止Finalizer。 它永远不会有机会运行。 如果我们接受finalizer run是一个bug，那么有一个指导原则强制开发人员从以下抽象类派生并禁止直接实现IDisposable接口。 public abstract cla
I found Boolean source code on http://referencesource.microsoft.com/#mscorlib/system/boolean.cs: public struct Boolean { ... private bool m_value; ... } why does it not throw a StackOverflowException? The reason why this works is because the bool and System.Boolean types are actually different. The primitive bool type is a built-in type that stores 1 byte. The System.Boolean t
我在http://referencesource.microsoft.com/#mscorlib/system/boolean.cs上找到布尔源代码： public struct Boolean { ... private bool m_value; ... } 为什么它不抛出StackOverflowException？ 这种工作原因是因为bool和System.Boolean类型实际上是不同的。 原始布尔类型是一个内置类型，存储1个字节。 System.Boolean类型用作基元类型的对象包装，并实现IComparable和IConvertable接口。 这个包装器被实
I have a solution with multiple start-up projects, and I am trying to relaunch one of them automatically on a nightly basis, while keeping the new process attached to the same debugger. I was able to restart the process (using Process.Start ) and attach the current debugger to it, but it has not been highly reliable so far, and by design, clicking on the Stop button only detaches from the proce
我有一个包含多个启动项目的解决方案，我试图每晚自动重新启动其中的一个，同时让新进程连接到同一个调试器。 我能够重新启动进程（使用Process.Start ），并将当前的调试器附加到它，但目前为止它的可靠性并不高，并且通过设计，单击“停止”按钮只会脱离进程而不是终止进程。 我知道Visual Studio团队已经发布了一个Visual Studio扩展，该扩展允许自动将子进程附加到当前的调试器，这可能比我的代码更好，但它不可移植，因为