process | 易学教程

reading data from process' memory with Python

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问题 I'm trying to read data from memory of a process by inputing the process name, then finding PID using psutil. So far I have this: import ctypes from ctypes import * from ctypes.wintypes import * import win32ui import psutil # install, not a default module import sys # input process name nameprocess = "notepad.exe" # find pid def getpid(): for proc in psutil.process_iter(): if proc.name() == nameprocess: return proc.pid PROCESS_ID = getpid() if PROCESS_ID == None: print "Process was not found"

Why is a process's address space divided into four segments (text, data, stack and heap)?

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问题 Why does a process's address space have to divide into four segments (text, data, stack and heap)? What is the advandatage? is it possible to have only one whole big segment? 回答1: There are multiple reasons for splitting programs into parts in memory. One of them is that instruction and data memories can be architecturally distinct and discontiguous, that is, read and written from/to using different instructions and circuitry inside and outside of the CPU, forming two different address spaces

开启进程守护进程

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一:开启进程的方式第一种 from multiprocessing import Process import time def task(name): print(f"{name} is running ") time.sleep(3) print(f"{name} is gone") if __name__ == '__main__': p = Process(target = task,args = ('常鑫',)) p.start() print('===主') ===主常鑫 is running 常鑫 is gone 开启进程的方式第二种 from multiprocessing import Process import time class MyProcess(Process): def __init__(self,name): super().__init__() self.name =name def run(self): print(f"{self.name} is running") time.sleep(2) print(f"{self.name} is gone") if __name__ == '__main__': p = MyProcess('常鑫') p.start() print('=====主') ''' =====主常鑫 is

c# 清除IE记录历史记录临时文件 Cookie

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#region 清除IE记录 /// <summary>清除IE记录 (方法一有弹窗口)</summary> public static void IEclear() { Process process = new Process(); process.StartInfo.FileName = "RunDll32.exe"; process.StartInfo.Arguments = "InetCpl.cpl,ClearMyTracksByProcess 255"; process.StartInfo.UseShellExecute = false; process.StartInfo.RedirectStandardInput = true; process.StartInfo.RedirectStandardOutput = true; process.StartInfo.RedirectStandardError = true; process.StartInfo.CreateNoWindow = false; process.Start(); }　　　　　 public enum ShowCommands : int { SW_HIDE = 0, SW_SHOWNORMAL = 1, SW_NORMAL = 1, SW_SHOWMINIMIZED = 2, SW

《Qt Quick核心编程》勘误

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本文将结合章节和问题发现的先后顺序来编排，具体是酱紫的：每个章节单列出来作为本文的一节，在该节下按时间顺序列出发现的问题。第4章 1). 51页第六行：“ iconName 属性定图标的名字”，其中“定图标的名字”，应该为“指定图标的名字” 第5章 1). 62页，5.2.2 节，“第一个字符必须是字母、下画线”，其中的“下画线”应为“下划线” 2).第80页，5.5.5节，“Math 有下列方法：”，这句话被误作为符号列表印刷了。 3).第102页，application.platform ，应为 Qt.platform 4).第67页，5.3.5节，第四行、第五行，isFinit 应为 isFinite 。第8章 1). 第154页，8.1.2 节，“Colomun”应为“Column” 第9章 1). 第174页，9.4 节，“RaidoButton”应为“RadioButton” 第11章 1). 11.3.3节，259页，代码： void ImageProcessor::process(QString file, ImageAlgorithm algorithm) { m_d->process(file, algorithm); } 　　应该是： void ImageProcessor::process(QString file, ImageAlgorithm

canvas绘制圆环

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<canvas class="process" width="48px" height="48px">15%</canvas> <script type="text/javascript"> drawProcess() function drawProcess() { $('canvas.process').each(function() { var text = $.trim($(this).text()); var process = text.substring(0, text.length - 1); var canvas = this; var context = canvas.getContext('2d'); context.clearRect(0, 0, 48, 48); context.beginPath(); context.moveTo(24, 24); context.arc(24, 24, 24, 0, Math.PI * 2, false); context.closePath(); context.fillStyle = '#ddd'; context.fill(); context.beginPath(); context.moveTo(24, 24); context.arc(24, 24, 24, 0, Math.PI * 2 * process

How do I show running processes in Oracle DB?

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问题 Is it possible to show other processes in progress on an Oracle database? Something like Sybases sp_who 回答1: I suspect you would just want to grab a few columns from V$SESSION and the SQL statement from V$SQL. Assuming you want to exclude the background processes that Oracle itself is running SELECT sess.process, sess.status, sess.username, sess.schemaname, sql.sql_text FROM v$session sess, v$sql sql WHERE sql.sql_id(+) = sess.sql_id AND sess.type = 'USER' The outer join is to handle those

Why is the heap section present when there are no malloc used

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问题 I am trying to find out whether heap exists in the address space of the process, if we don't call malloc. #include <stdio.h> int main() { getchar(); return 0; } Heap section is present in the maps even if i dont call malloc cat /proc/73268/maps 55d0b405c000-55d0b4160000 r-xp 00000000 08:01 5505031 /bin/bash 55d0b435f000-55d0b4363000 r--p 00103000 08:01 5505031 /bin/bash 55d0b4363000-55d0b436c000 rw-p 00107000 08:01 5505031 /bin/bash 55d0b436c000-55d0b4376000 rw-p 00000000 00:00 0 55d0b567e000

Solution for background jobs on Heroku?

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问题 I've used Delayed Job on Heroku's older stacks (Aspen and Bamboo), but with their new(ish) Cedar stack, I'd like to try something more efficient. The specific background jobs I'm performing are API calls to different carriers (UPS, FedEx, USPS, etc etc) and I typically am processing thousands every hour. I need to be able to process jobs concurrently to get through the queue quickly. On top of that, I'd like to try to reduce costs. On the previous stacks where I've been using Delayed Job, I

Solution for background jobs on Heroku?

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