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The boost mutex,condition_variable is very useful. But on Linux, boost actually does a series of packages for pthread_mutex_t and pthread_cond_t. Therefore, we can realize the convenience that boost brings to us again through the realization of the

In the thread synchronization process, there are also the following situations: Thread A needs to wait for A condition to be established before it can continue to run. if the condition is not true, thread A will be blocked, when thread B sets this

Yum. sh #! /Bin/bashread-p & quot; enter the image file path (for example,/root/rhel5u5. iso): & quot; jingxiangread-p & quot; enter Mount point (e.g.:/iso): & quot; gzdmount-tiso9660 & quot; $ jingxiang & quot; $ gzd & qu yum. sh #! /Bin/bash

I. Learning ObjectivesMastering Process ControlMastering the method of signal processingMastering the methods of Pipeline and FIFO for interprocess communicationIi. Learning TasksCompile, run, read, and understand the code in the process.tar.gz

Latency functions in Linux Shell Latency processing is often required in Linux shell scripts. Therefore, sleep or usleep functions are often used. The difference between sleep and usleep is as follows: Sleep: the default unit is seconds.

Previous continuedA murder caused by a lock-free message queue: How to be a real programmer? (a)--ground: CauseA murder caused by a lock-free message queue: How to be a real programmer? (b)--month: Spin lockParallel spaceIn the copy of the above

Paip. C #. Net method to obtain different random numbers cyclically Based on Time Author attilax, email: 1466519819@qq.com Generally, you can use random Ra = new random .. However, if the application is in a for loop, multiple random values

Previously, I was responsible for db-related tasks. I often needed to write specialized tools to import raw data to the target database after some logic processing. The tools needed to complete the import at the fastest speed without affecting the

Ob_start () is invalid. how can this problem be solved ;? Phpob_start (); for ($ I = 0; $ I & lt; 300; $ ++) mecho & quot; for ($ I = 10; $ I & gt; 0; $ I --) {& nbsp; echo $ I; & nbsp; flush (ob_start () is invalid. how can this problem be solved?

The following procedure is I found on the Internet, he commented that the first sentence is very critical, but I found that the first sentence did not work, no output 300 spaces. And I deleted the first sentence. The result is exactly the same.

First, use the Chrome browser to view the data sent during login and operation, and then use the library to implement the parameter post to obtain the webpage. Now you can log on and exit normally. In the future, you should add web page analysis.

Linux uses the time command to obtain the command execution timeIn Linux, the time command can get the execution time of a program, including the actual running time of the Program (real time) and the time when the program runs in the user State

Python advanced-function default parameters (detailed description), python advanced 1. Default Parameters To simplify function calling, python provides the default parameter mechanism: def pow(x, n = 2): r = 1 while n > 0: r *= x n -= 1

Python task execution thread, process, and coroutine, python I. threads The thread is the minimum unit for executing tasks in the program. The Threading module provides related operations. The thread is suitable for intensive IO operations.1 #! /Usr/

Look at python multithreading ------ threading module, pythonthreading Module Now let's record the notes that can be thought of with multithreading: Threading module: 1. Questions about parameter passing If the called sub-thread function requires

Python Note 5: decorator, built-in functions, json, and pythonjsonDecorator The decorator is essentially a Python function that allows other functions to add additional functions without any code changes. The return value of the decorator is also a

Python: coroutine, python coroutine 1. How do I implement switching between two functions? def func1(): print(l) yield print(3) yielddef func2(): g =func1() next(g) print(2) next(g) print(4)func2() 2. coroutine Import

Python --- process and thread, python --- process threadProcesses and threads what are threads and processes Thread: The minimum unit that the operating system can schedule operations. It is included in the process and is the actual operating unit

Python inter-process communication Queue instance parsing, pythonqueue This article mainly studies the Python process-to-process communication Queue examples, as detailed below. 1. Queue usage: Queue. qsize (): returns the number of messages

5.6 dead Lock(1) deadlock : Two threads attempt to occupy two resources at the same time, and lock the corresponding shared resources in different order.(2) Solution:① Scenario 1: Lock the appropriate shared resources in the same order② Scenario 2: