false sharing / true sharing true sharing 的概念比较好理解,在对全局变量或局部变量进行多线程修改时,就是一种形式的共享,而且非常字面意思,就是 true sharing。true sharing 带来的明显的问题,例如 RWMutex scales poorly 的官方 issue,即 RWMutex 的 RLock 会对 RWMutex 这个对象的 readerCount 原子加一。本质上...
Directions: Judge whether each of the following statements is true or false. Put a T for true or F for false in the bracket in front of each statement. If you think a statement is false, you must explain why you think so and give the correct version.(2%×10=20%)21.() People can...
false sharing / true sharing true sharing 的概念比较好理解,在对全局变量或局部变量进行多线程修改时,就是一种形式的共享,而且非常字面意思,就是 true sharing。true sharing 带来的明显的问题,例如 RWMutex scales poorly 的官方 issue,即 RWMutex 的 RLock 会对 RWMutex 这个对象的 readerCount 原子加一。本质上...
br: br指令用来控制一个函数内的不同模块之间的转移,同样也有两种格式:条件分支和非条件分支 bri1<cond>,label<iftrue>,label<iffalse>brlabel<dest>;Unconditionalbranch switch: “Switch指令用于将控制流转移到几个不同的位置之一。与br类似,允许分支发生在许多可能的目的地之一 switch<intty><value>,label<de...
The basic function performed by a computer is execution of a program, which consists of a set of instructions stored in memory(计算机的基本功能就是能够执行在内存中存取的指令的集合来完成一个程序) The processor does the actual work by executing instructions specified in the program(处理器被程序确定...
Requires reboot false Requires special configuration false Type automaticAdditional DocumentationTests in this feature area might have additional documentation, including prerequisites, setup, and troubleshooting information, that can be found in the following topic(s): ...
Requires reboot false Requires special configuration false Type automaticAdditional DocumentationTests in this feature area might have additional documentation, including prerequisites, setup, and troubleshooting information, that can be found in the following topic(s): ...
This is done by having the bits represent a list of Boolean flags that can be set to TRUE with a value of 1 or to FALSE with a value of 0. Binary digits that follow the name can also be grouped to form a larger binary number. In such cases, the documentation specifies the meaning...
This is done by having the bits represent a list of Boolean flags that can be set to TRUE with a value of 1 or to FALSE with a value of 0. Binary digits that follow the name can also be grouped to form a larger binary number. In such cases, the documentation specifies the meaning...
Some instruction sets also have conditional moves, so that the move will be executed, and the data stored in the target location, if the condition is true, and not executed, and the target location not modified, if the condition is false. Similarly, IBM z/Architecture has a conditional ...