what mutex lock

Document directory Create and destroy Maintenance of pthread_mutexattr_t Lock Operation Others Create and destroy Static Initialization pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; Dynamic Initialization int pthread_mutex_init

I. Use mutex lock 1. initialize mutex Pthread_mutex_t mutex = pthread_mutex_initializer; // static initialization mutex Int pthread_mutex_init (pthread_mutex_t * mutex, pthread_mutexattr_t * ATTR); // dynamically initialize mutex Int

Why is scoped_lock recommended?   This is the same reason as raiI idiom is becoming popular: You can indeed pack mutex that will be unlocked when you leave the execution range in any case. Note: not only do you forget to call unlock (): After

The raiI method is short for resource acquisition is initialization, which means "resource acquisition is initialization". It is also used when using smart pointers. The following is the implementation of mutex, 1 #include 2 #include 3 4 using

The solution to the read/write mutex lock problem of Mysql (MyISAM) bitsCN.com cannot add a read server in a short period of time. Therefore, some Mysql configurations are adopted to sacrifice the cost of real-time data, in exchange for the life

Mutex: is to avoid multiple threads to rob resources caused by data inaccuracy problem, is to limit the same time multiple threads access to the same data.First you need to understand two concepts:1> Multithreading concurrency Execution: We all know

We often need multiple threads to stay in sync while the thread is actually running. In this case, the mutex can be used to complete the task, the use of the mutex is mainly pthread_mutex_init,pthread_mutex_destory,pthread_mutex_lock,pthread_mutex_

ReentrantLock: ReentrantLock Is A reentrant mutex lock. It is also called an exclusive lock ". As the name suggests, the ReentrantLock can only be held by one thread lock at the same time point. reentrant means that the ReentrantLock can be obtained

This article is Senlie original, reprint please retain this address:Http://blog.csdn.net/zhengsenlie1. File lock file system operation, more time-consuming2. Thread locking is not only suitable for locking between threads in the same process, but

Since the functions of the Pthread series are all successful and return 0, we need a code to judge the processing error:#define Tiny_check (exp) if(! EXP) { "File:%s, line:%d Exp: ["#exp"] is true, abort.\n " , __file__,

This article makes a simple package for the pthread_mutex_t in Linux. Mutexes are primarily used for mutual exclusion, which is a competitive relationship , primarily a system resource or a piece of code that is accessed by one thread at a time.

Threads: Threads are an execution flow in a program, each with its own proprietary registers (stack pointers, program counters, and so on), but the code area is shared, meaning that different threads can execute the same function.Multithreading:

This article is Senlie original, reprint please retain this address:Http://blog.csdn.net/zhengsenlie1. Pre-Create a thread pool and have each thread call the Accept2. Use a mutex instead of having each thread block in the Accept callThe thread

Lock mutex Use pthread_mutex_lock (3C) to lockMutexThe mutex. Pthread_mutex_lockSyntax intpthread_mutex_lock(pthread_mutex_t *mutex); #include pthread_mutex_t mutex;int ret;ret = pthread_ mutex_lock(&mp); /* acquire the mutex

Pthread_mutex_lock Pthread_mutex_lock (pthread_mutex_t * mutex ); Int pthread_mutex_trylock (pthread_mutex_t * mutex ); Int pthread_mutex_unlock (pthread_mutex_t * mutex ); Description: The pthread_mutex_lock () function locks the mutex object

This article discusses a large number of synchronization or lock mechanisms available in the Linux kernel. These mechanisms provide application interfaces (APIS) for many available methods of kernel 2.6.23 ). However, before learning APIs in depth,

Thread creation: [Linux programming] Thread Programming When multiple control threads share the same data, ensure that each thread sees consistent data. When a thread modifies a data variable, other threads may see inconsistent data when reading

# Include 1. Create Int pthread_create (pthread_t * tid, const pthread_attr_t * ATTR, void * (* func) (void *), void * Arg ); ATTR: the thread attributes include priority, initial stack size, and whether it should be a daemon thread. Default Value:

1. IntroductionThread technology was proposed as early as 1960s, but the real application of multithreading to the operating system was in the middle of 1980s, and Solaris was a leader in this field. Traditional UNIX also supports the concept of

Linux C ++ multi-thread programming and linux multi-thread programming1. Introduction 　　Thread)The technology was proposed as early as 1960s, but the real application of multithreading to the operating system was in the middle of 1980s, and solaris