java volatile

Original address: http://www.ibm.com/developerworks/cn/java/j-jtp06197.htmlVolatile variables in the Java language can be thought of as "light", and synchronized synchronized volatile variables require less coding and run-time overhead than blocks, but only part of the functionality that they can implement synchronized . This article describes several patterns fo

Guidelines for using volatile variablesThe Java™ language contains two intrinsic synchronization mechanisms: synchronous blocks (or methods) and volatile variables. Both of these mechanisms are proposed to achieve the security of code threads. Where volatile variables are less synchronous (but sometimes simpler and les

Volatile variables in Java can be considered as "synchronized with a lighter degree". Compared with synchronized blocks, volatile variables require less encoding and less runtime overhead, but what it can achieve is only part of synchronized. This article introduces several effective modes for Using volatile variables,

are usually the following 2 solutions: 1) Through caching the consistency protocol by means of the bus plus lock# lock 2) There is a problem in the first way, because the other CPUs cannot access the memory during the locking of the bus, resulting in inefficiency. So there is a cache consistency protocol. The core idea is that when the CPU writes the data, if the variable that is found to be a shared variable, that is, a copy of the variable exists in other CPUs, it signals to the other CPU tha

of the memory barrier can also continue to optimize according to the specific processor memory model. Taking the x86 processor as an example, the other barriers will be omitted except for the final storeload barrier in the image above. Volatile read and write in the previous conservative strategy, the x86 processor platform can be optimized to: As mentioned earlier, the x86 processor will only reorder write-read operations. X86 does not reorder r

Http://www.ibm.com/developerworks/cn/java/j-jtp06197.htmlThe Java™ language contains two intrinsic synchronization mechanisms: synchronous blocks (or methods) and volatile variables. Both of these mechanisms are proposed to achieve the security of code threads. Where volatile variables are less synchronous (but sometim

Source: http://www.cnblogs.com/dolphin0520/p/3920373.html Java concurrent Programming: volatile keyword parsing Volatile this keyword probably many friends have heard, perhaps also all used. Before Java 5, it was a controversial keyword, because using it in a program often resulted in unexpected results. After

Volatile variables in the Java language can be thought of as "light", and synchronized synchronized volatile variables require less coding and run-time overhead than blocks, but only part of the functionality that they can implement synchronized . This article describes several patterns for using volatile variables eff

Volatile variables in the Java language can be thought of as "light", and synchronized synchronized volatile variables require less coding and run-time overhead than blocks, but only part of the functionality that they can implement synchronized . This article describes several patterns for using volatile variables eff

Volatile variables in the Java language can be thought of as "light", and synchronized synchronized volatile variables require less coding and run-time overhead than blocks, but only part of the functionality that they can implement synchronized . This article describes several patterns for using volatile variables eff

Volatile variable User Guide Level: Intermediate Brian GoetzBrian.goetz@sun.com), Senior Engineer, Sun Microsystems July 05, 2007 The Java language includes two internal synchronization mechanisms: Synchronous block (or method) and volatile variables. Both mechanisms are proposed to achieve code thread security. Among them, the synchronization of

Source: http://www.ibm.com/developerworks/cn/java/j-jtp06197.html Introduction:The Java language includes two internal synchronization mechanisms: Synchronous block (or method) and volatile variables. Both mechanisms are proposed to achieve code thread security. Among them, the synchronization of volatile variables is

articles reproduced from:Correct use of Volatile variables?? Volatile variables in the Java language can be thought of as "light", and synchronized synchronized volatile variables require less coding and run-time overhead than blocks, but only part of the functionality that they can implement synchronized . This articl

Java volitile Key WordsThe Java volatile keyword is used to mark a Java variable as "stored in main memory". More precisely, each read operation against a volatile variable reads from the main memory rather than from the CPU's cache, and each write to the

Volatile this keyword probably many friends have heard, perhaps also all used. Before Java 5, it was a controversial keyword, because using it in a program often resulted in unexpected results. After Java 5, the volatile keyword was able to regain its vitality. Although the volati