VOLATILE 英语是什么意思 - 英语翻译

• volatile

在 中文 中使用 Volatile 的示例及其翻译为 英语

什么是volatile变量?
What is volatitle variable?

使用volatile的局限是什么？?
What are the limitations of volatile?

原创你真的了解volatile关键字吗？?
Do you know about the VOLATILE keyword?

Volatile只保证可见性，不保证原子性。
The volatile keyword ensure only visibility, not atomicity.

请注意，共享标志被声明成volatile。
Please note that the variable stopThreadFlag is declared as volatile.

如果是一个读操作（volatile读或非volatile读），v是读操作对应的变量.
If the action is a(volatile or non-volatile) read, v is the variable being read.

所有非静态数据成员和基类是非volatile字面类型。
All non-static data members and base classes are of non-volatile literal types.

这里有个神奇咒语叫volatile(我觉得这个词在Java规范中从未被解释清楚)。
The magic incantation here is the word volatile(something I felt was never clearly explained in the Java certification).

对于联合体，至少有一个非静态成员函数是非volatile字面类型，.
For unions, at least one non-static data member is of non-volatile literal type.

Java编程语言提供了第二种机制，即Volatile字段，在某些情况下比锁更方便。
The Java programming language provides a second mechanism, volatile fields, that is more convenient than locking for some purposes.

对于非联合体，所有非静态数据成员和基类是非volatile字面类型。
For non-unions, all non-static data members and base classes are of non-volatile literal types.

互斥量、条件变量、Javavolatile或C++原子对象都不是普通数据，对它们的访问允许竞争。
Mutexes, condition variables, Java volatiles, or C++ atomic objects are not ordinary data, and their accesses are allowed to race.

前面几节介绍的模式涵盖了大部分的基本用例，在这些模式中使用volatile非常有用并且简单。
The patterns in the previous section cover most of the basic cases where the use of volatile is sensible and straightforward.

在C++中，volatile不会阻止数据争用，但由于缺少atomic对象，较旧的代码通常会将其用作解决方法。
In C++, volatile does not prevent data races, though older code often uses it as a workaround for the lack of atomic objects.

ARMv8提供LDAR和STLR指令，这些指令直接强制执行Javavolatile或C++顺序一致的加载和存储要求。
ARMv8 provides LDAR and STLR instructions that directly enforce the requirements of Java volatile or C++ sequentially consistent loads and stores.

Volatile使用范围在Java5中得到了扩展，特别是双重检查锁定现在能够正确工作。
The range of situations in which volatile is effective was expanded in Java 5; in particular, double-checked locking now works correctly.

与锁不同的是，volatile或atomic变量不能直接用来阻止其他线程干扰较长的代码序列。
Unlike locks, volatile or atomic variables can't be used directly to prevent other threads from interfering with longer code sequences.

Volatile的旧语义只承诺正在读和写的变量的可见性，而不承诺其他的变量。
The old semantics of volatile only made promises about the visibility of the variable being read or written, and no promises about other variables.

在C和C++中，对volatile数据的访问可以通过访问非volatile数据进行重新排序，且没有原子性保证。
In C and C++, accesses to volatile data may be reordered with accessed to non-volatile data, and there are no atomicity guarantees.

Volatile的运用阻止了该优化，告知Javarunning可以改变，改变方式并不以直接代码形式显示。
The use of volatile prevents this optimization, telling Java that running may change in ways not directly apparent in the immediate code.

在记忆效应方面，向volatile写入数据类似于监视器释放，从volatile读取数据则类似于监视器获取。
In terms of memory effect, writing to a volatile is analogous to a monitor release, and reading from a volatile is like a monitor acquire.

Cvolatile通常不会阻止硬件对访问进行重新排序，因此其本身在多线程SMP环境中就更不实用了。
C volatile usually does not prevent access reordering by the hardware, so by itself it is even less useful in multi-threaded SMP environments.

X3J11也引入了一大堆较小的附加和修改，例如，类型限定词const和volatile，和稍有不同的类型提升规则。
X3J11 also introduced a host of smaller additions and adjustments, for example, the type qualifiers const and volatile, and slightly different type promotion rules.

这使得volatile对象适用于与信号处理函数的交流，但不适于与另一执行线程交流，参阅std::memory_order）。
This makes volatile objects suitable for communication with a signal handler, but not with another thread of execution, see std::memory_order.

由于java的CAS同时具有volatile读和volatile写的内存语义，因此Java线程之间的通信现在有了下面四种方式：.
Because Java's CAs have both volatile read and volatile write memory semantics, communication between Java threads now has the following four ways:.

虽然volatile修饰符不执行互斥访问，但它可以保证任何一个线程在读取该域的时候都将看到最近刚刚被写入的值：.
While the volatile modifier performs no mutual exclusion, it guarantees that any thread that reads the field will see the most recently written value:.

VolatileRule:写一个volatile变量happens-before每一个volatile变量的读操作；.
The volatile variable rule: a write of a volatile variable happens before every subsequent read of the same volatile variable.