What is a synchronization mechanism? Summary of instance usage related to synchronization mechanism

This article mainly introduced the Python condition variable's producer and the consumer operation, combined with the concrete instance form to analyze the python condition variable concept, the principle, and the thread operation related skill, needs the friend can refer to this article to describe the python condition variable's producer and the consumer operation. Share for your reference, as follows: Mutexes are the simplest thread synchronization mechanism, and Python also provides condition objects for complex thread synchronization problems. condition is called a conditional variable and provides the wait and notify methods in addition to the acquire and release methods similar to lock. The thread first acquire a condition variable and then determines some conditions. Wait if the condition is not met, and if the condition is met, after some processing changes the condition, the other thread is notified by the Notify method, and the other thread in the wait state will be re-judged after receiving the notification. Constantly repeating this process to solve complex synchronization problems. You can assume that the condition object maintains a lock (Lock/rlock) and a Wai

1.10 article recommendations on conditional variables, threads

Introduction: This article mainly introduced the Python condition variable producer and the consumer operation, combined with the concrete instance form to analyze the python condition variable concept, the principle, and the thread operation related skill, needs the friend can refer to this article to describe the python condition variable's producer and the consumer operation. Share for your reference, as follows: Mutexes are the simplest thread synchronization mechanism, and Python also provides condition objects for complex thread synchronization problems. condition is called a conditional variable, except that it provides a similar ...

2. A comparison instance of threadlocal local thread and synchronization mechanism in Java

Introduction: This article mainly describes the Java threadlocal local thread and synchronization mechanism of the relevant data, the need for friends can refer to the following

3. Considerations for using the volatile keyword in Java

Summary: The volatile keyword is a slightly weaker synchronization mechanism in Java, and why it is called a weak mechanism. This article mainly describes the Java use of volatile keyword considerations, the need for friends can refer to the following

4. Java memory Model depth resolution: Lock

Summary: Locks are the most important synchronization mechanism in Java concurrency programming. The lock allows the thread that releases the lock to send a message to the thread that acquires the same lock, except for the exclusion of the critical zone from execution.

5. Java reserved word volatile and its difference from synchronized

Summary: Locks provide two main features: Mutual exclusion (mutual exclusion) and visibility (visibility). Mutual exclusion allows only one thread to hold a particular lock at a time, so you can use this attribute to implement a coordinated access protocol to shared data so that only one thread can use that shared data at a time. Visibility is more complex, and it must ensure that the changes made to the shared data before the lock is released are visible to the other thread that subsequently acquired the lock-if there is no guarantee of this visibility provided by the synchronization mechanism, the shared variables that the thread sees may be pre-modified or inconsistent values, which can cause many serious problems.

6. Python multithreaded Programming 5

Summary: mutexes are the simplest thread synchronization mechanism, and the condition object provided by Python provides support for complex thread synchronization issues. Condition is called a condition variable, except that it is provided with a lock similar to ...

7. Implementation of a thread pool

Introduction:: Implementation of a thread pool: one. The most important three synchronization mechanism of threads 1. Semaphore 2. Mutex 3. Conditional variable two. Implement a wrapper class #ifdef Locker_h#define locker_h#include #include/* for three synchronization mechanisms respectively Semaphore Package */class Sem{public:sem () {if (Sem_init (&sem_like, 0, 0)) {Throw STD

8. MySQL5.5 Master-Slave synchronization configuration and problems

Introduction: Installation of some articles on the Web configuration MySQL master-slave synchronization mechanism, helpless restart from the MySQL when the exception, said do not know the parameters Master_host/usr/sbin/mysqld:unknown variable master_host= 10.0.2.160 originally I used the MySQL5.5, and most of the configuration is based on the previous version of 5.5, the MySQL version from 5.1.7 After the start is not

9. mysql Master-slave library synchronization mechanism

Summary: MySQL master-Slave library synchronization We set up a master library (master), and one from the library (slave or secondary). Copy data content from the library from the main library for disaster backup, read-write separation, and more. This article mainly talk about the synchronization mechanism, as to how to set up MySQL main library, from the library and synchronization, the online content is many, crossing as long as Google "MySQL master and Slave Library Settings"

10. Use MySQL proxy to resolve MySQL master-slave synchronization delay

Introduction: MySQL master-slave synchronization mechanism is very convenient to solve the high concurrent read application requirements, the development of the web has brought great convenience. However, there is a big flaw in this way is that the synchronization mechanism of MySQL relies on the slave initiative to master the request to obtain data, and due to server load, network congestion and other reasons, master and slave between the number of

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