虽然EntityManagerFactory实例是线程安全的,但EntityManager不是。
Although EntityManagerFactory instances are thread-safe, EntityManager instances are not.
At the heart of any reasonable definition of thread safety is the concept of correctness.Vector是线程安全的,而ArrayList是非线程安全的。
Consequently Vector is thread-safe, and ArrayList isn't.
First, we need a thread safe data structure.从Java5开始,使用Enum创建线程安全的Singleton很容易。
Java 5 made it easy to create thread-safe Singleton using Enum.Combinations with other parts of speech
Srand() is not guaranteed to be thread-safe.
The stack area is thread safe since it is not a shared resource.
The stack area is thread safe since it is not a shared resource.
What is thread safe or non-thread safe in PHP?
Local variables are thread safe because each segment has its own copy.
The stack area is thread safe since it is not a shared resource.
The stack area is thread safe since it is not a shared resource.
Do you think that this code is thread safe?IsThreadSafe表示最终生成的servlet是否具有线程安全性。
IsThreadSafe indicates if the resulting servlet is thread safe.
This should always bedone to make instance level data thread safe.
This should alwaysbe done to make static data thread safe.
How to make an application thread safe?StringBuffer是线程安全的,而StringBuilder是非线程安全的。
StringBuffer is threading safe, whereas StringBuilder is not.
What is a safe line?
Locks Thread Safety.
(February 2003), which discusses thread-safety benefits of immutability.
Cockaigne: is this a secure line?
Listing 1 shows a non-thread-safe number range class.Spark调度器是完全线程安全的,并且能够支持Spark应用同时处理多个请求(比如:来自不同用户的查询)。
Spark's scheduler is fully thread-safe and supports this use case to enable applications that serve multiple requests(e.g. queries for multiple users).使这个类成为线程安全的最简单方法是使用QMutex来保护数据成员:.
An easy way to make the class thread-safe is to protect all access to the data members with a QMutex:.至于Rust,也许开发人员喜欢系统编程语言的速度,预防segfault的能力以及能保证线程安全。
As for Rust, perhaps developers like the systems programming language's speed, ability to prevent segfaults,and guarantee of thread safety.使一个程序线程安全的一般方法是,当线程获得对共享资源的写权限时,需要对共享资源加锁。
The general method to make a program thread safe is to lock shared resources whenever write permission is given.线程安全类封装任何需要的同步,以便客户端不需要提供它们自己的同步。
Thread-safe classes encapsulate any needed synchronization so that clients need not provide their own.其中之一是使用线程安全的数据结构,如python队列模块中的queue。
One of them is to use thread-safe data structures like Queue from Python's queue module.所以,如果你不需要线程安全的话,那么就使用ArrayList吧。
So if you don't need a thread safe collection, use the ArrayList or.