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from:http://blog.csdn.net/fengge8ylf/article/details/6896380 Author: Wang Dong 1.1 What is conditional variable and condition wait. To put it simply: A condition variable (condition variable) is a mechanism for synchronizing with global variables

POSIX condition Variables int Pthread_cond_init (pthread_cond_t *cond, pthread_condattr_t *cond_attr); int Pthread_cond_destroy (pthread_cond_t * cond); int pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex); int

Introduction: The related functions are as follows:1 int pthread_cond_init (pthread_cond_t * cond, pthread_condattr_t * cond_attr );2 int pthread_cond_wait (pthread_cond_t * cond, pthread_mutex_t * mutex );3 int pthread_cond_timewait (pthread_cond_t

MYSQL5.6.7-RC index condition pushdown indexed condition Push code interpretationHttp://jishu.zol.com.cn/4505.htmlMYSQL5.6.7-RC Index Condition pushdown code interpretation a-a+2013-08-07 11:10|Share to:Interested in the index condition Pushdown,

In the network programming, is generally multithreaded programming, this arises a problem: data synchronization and sharing. The mutex and condition variables are the two most basic components to allow the data to be shared between threads or

Hello, C ++ (19) "Teacher, have I passed this level 4 test ?" -- 4.2 condition selection statement, Level 4 exam 4.24.2 condition selection statement "Teacher, have I passed this level 4 test ?" How can the teacher answer this question? Yes, he will

Multi-threaded thread communication Condition condition and multi-threaded Condition Condition is the implementation of wake-up and blocking between communication threads under the Locks lock. The following await and signal can implement all the

Linux mutexes, condition variables, and semaphores from http://kongweile.iteye.com/blog/1155490Blog Category: Linux Sem_init: Initializes the semaphore sem_t, the initial value of the semaphore can be specified when initializing, and

1. There is a problem with the mutex: mutexes are the necessary tools for threaded threads, but they are not omnipotent. For example, what happens if a thread is waiting for a condition in the shared data to appear? It can repeatedly lock and unlock

This condition 1 and (0 OR condition 2) logical operation how to understand? Recently encountered such a problem, is about the logical operation, see: Condition 1 and (0 OR condition 2) If there is no keyword, then the latter part is (0) Condition 1