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, after the call, the worker node is deleted from the task queue. After the function is called on all nodes, worker_thread continues to sleep until schedule_work is called again by a driver.The difference between working columns created by the driver is that schedule_work calls queue_work (keventd_wq, work) internally ), when calling queue_work, the first parameter of the work queue created by the driver is the work queue created by the driver. 2. The

Linux troubleshooting: How do I save the working status after the SSH session is closed? Most of the time, I use the SSH command line to connect to my remote server. Unfortunately, my SSH session is lost because the power is down today and the network hub is closed. What if your SSH session for an important job is lost? Here is a simple tool called Tmux that keeps a process record after the Putty or SSH session ends. Tmux is a terminal multiplexing. I

Oracle stored procedure returns (N) working days based on the specified date I have never written any Oracle stored procedures. Today I have a sudden demand: Calculate the first N working days of the specified date or the next N working days (excluding weekends, which cannot be calculated on statutory holidays ), then I studied Oracle's time functions and cycle m

Working principle of Java GC (garbage collection), gc garbage collection Garbage Collection is short for GC, which indicates Garbage Collection. Memory Processing is a problem that programmers are prone to. memory recovery that is forgotten or incorrect may cause instability or even crash of programs or systems. The GC function provided by Java can automatically detect whether the object has exceeded the scope, so as to automatically recycle the memor

When a ubuntu host is added to the Windows Working Group, the following formula is used: sudo gedit/etc/samba/smb. conf: replace XXX in workgroup = XXX with the actual working group name. The default value is workgroup = WORKGROUP. Add a line of netbios name = xxx below to set the name displayed by the computer in the working group. If not set, the host name is u

Next, I went on to get started with AI, and I had a rough understanding of what AI is doing and the research objectives. Continue today. 1: Let's review what we 've mentioned earlier. Artificial Intelligence is a manual way to make machines smarter. Intelligence is a kind of behavior. This behavior is related to the human brain, and the brain is mainly responsible for these behavior for neuron cells. It is to study the working principle of neuron ce

I. Arm has two working states: (1) arm status. At this time, the processor executes the 32-bit arm command. (2) thumb status. At this time, the processor executes a 16-bit half-aligned thumb command. 2. Arm processors must be divided into big-end and small-end formats (both arm11 and arm11 are small-end formats) The so-called size-end format mainly talks about the relationship between the logic high status of data and the high status of addres

Tag: vs2010 bug1. When I encountered this problem, I searched Baidu and tried a lot of methods. I reinstalled vs2010 and fixed vs2010. Finally, I found several methodologies. The meaning of these methods was successful. The method is as follows: how to solve the problem that vs2010 has stopped working (1) Run vs2010vs2010 as an administrator (2) how to install servcie pack1vs2010 and stop working for vs2010

Everything has a virtuous circle and a vicious circle, and the same is true for work.ProgramThis is especially true for the job, especially if you are just like me, you just want to take the P path in the future. Last night, the boss sent me an email about the Planning Department planning the future technical development of arsoft recently. I hope to provide some ideas and feature about distributed computing, recently, I have been engaged in and put into practice, and I have written some of my

Apache's working mode1.apache Three modes of Operationwe all know that Apache has three types of work modules, prefork, worker, event, respectively. prefork: Multi-process , each request with a process response, this process will use the Select mechanism to notify. Worker: Multi-threaded , a process can generate multiple threads, each thread responds to a request, but the notification mechanism is select but can accept more requests. Event : Based

the results of the//background task are returned to OnPostExecute @Override protectedVoid doinbackground (String ... params) {log.i (Constants.LOG,"Doinbackground"); String url=params[0]; LOG.I (Constants.LOG,"url"+ URL);//Request picture according to URL, execute asynchronous task //........... return NULL; }//main thread run, update progress UI @Override protectedvoid Onprogressupdate (Integer ... values) {Super. onprogressupdate (value

Working principleAbove is the schematic diagram of SPRINGMVC's work:1, the client sends an HTTP request to the Web server, the Web server parses the HTTP request, If the request mapping path (specified in Web. xml) matches the Dispatcherservlet, the Web container will forward the request to Dispatcherservlet.2. After receiving this request, Dipatcherservlet will find the processor (Handler) processing the request based on the requested information (in

Switching the working directory through a script is just beginning to feel simple, and writing a CD statement directly in the script is done.But it's not.When executing a script, only a child process is opened under the current shell, and the operation of the switch directory is only valid for the relevant subsequent instruction in the process, but the directory of the parent process cannot be changed.Therefore, when you have written the script and th

Debugging a serial port under Linux is a hassle, especially in an embedded environment, and many times it is time to debug with another device.Here to figure out a feasible serial debugging method, you can simply check whether the serial port is working correctly.1. Short-Connect TX and RX (DB9 plug on the 2 and 3 feet, regardless of whether there is a crossover; Anyway, it's just 2 and 3 changed position, not affect this test)2. Use "Cat/dev/ttyusb0

Problem Locator:When using IDE development, learn a new thing, such as language, framework, when errors are temporarily unable to determine whether the new code is wrong or the IDE used wrong;It is not a code problem to write a simple test.java that does not use the technology, and there are exceptions after running.Problem solving:Find Baidu data or blog park and other technical website information, solve it.Instance:When spring HelloWorldRun appears in eclipse the user operation is waiting for

Working offline is when we've browsed the pages, then the computer will automatically save browsing records and web information, and then suddenly the computer is not connected to my network network abnormal situation, the computer can work offline to continue browsing the Web site has been opened to work, but not browse the saved data is not open. This is called off the web hosting job. Working offline all

Analysis of the working principle of DDNSDDNS implementation of the most fundamental point is that when the host IP address changes, the implementation of DNS mapping information in a timely manner, the application needs to obtain this information in a timely manner, the main methods can be divided into two major categories: A class is polling mechanism, namely: the application every time, to query the host's current IP address, and compared with the

Windows system with some of the system features often in the system using the process prompts a variety of problems, such as a user encountered WIN10 system prompts Microsoft Management Console has stopped working, how to solve it? 　　Hint Content Microsoft Management Console has stopped working A problem has occurred that causes the program to stop workin