原子操作API包括: atomic_read(atomic_t * v); 该函数对原子类型的变量进行原子读操作,它返回原子类型的变量v的值。 atomic_set(atomic_t * v, int i); 该函数设置原子类型的变量v的值为i。 void atomic_add(int i, atomic_t *v); 该函数给原子类型的变量v增加值i。 atomic_sub(int i, atomic_t ...
atomic_read staticinlineintatomic_read(constatomic_t *v) {return(*(volatileint*)&(v)->counter); } 防止读取的是寄存器的内容,而内存的值已经被其他线程改变
网络释义 1. 基本读文件 14.1 基本读文件(AtomicReadFile)服务 28314.2 基本写文件(AtomicWriteFile)服务 28615.home.gongkong.com|基于1 个网页 2. 读文件 ...WriteProperty)、WhoIs、IAm、读文件(AtomicReadFile)、写文件(AtomicWriteFile)、有证实事件通告(ConfirmedEve…ldhx.com|基于1 个网页©...
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For self-containment, this chapter starts with a short presentation of the notions of safe, regular, and atomic read/write registers (which were introduced in Chap.2). It then presents simple wait-free implementations of "high-level" registers from "low-level" registers. The notions of "high...
下面是利用原子读写操作的两种算法 在下面的算法中对数据的读写都是原子的 算法一两段程序如下:(1) (2) 这个解法存在的问题是:如果(1)在临界区之外进入了一个无限的循环,...
My understanding is that the above code will not have atomic read and write because the variable in question is not aligned on a 4 byte boundary and there shall not be an attempt at the hardware level to somehow atomise the reading or writing of the...
所谓访问原子性就是 Read,Write 操作是否存在中间状态,具体如何实现原子性的访问与处理器指令集有很大关系,如果处理器本身就支持某些原子操作指令,如 Atomic Store, Atomic Load,Atomic Fetch Add,Atomic Compare And Swap(CAS)等,那只需要在代码生成时选择合适的指令即可,否则需要依赖锁来实现。C++ 中提供的可移植通...
ref =_mali_osk_atomic_read(&mali_pm_ref_count); MALI_DEBUG_PRINT(4, ("Mali OSK PM: No-power ref taken (%u)\n",_mali_osk_atomic_read(&mali_pm_ref_count)));returnref >0? MALI_TRUE : MALI_FALSE;#elsereturnMALI_TRUE;#endif} ...
在下文中一共展示了atomic64_read函数的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。 示例1: register_memory ▲点赞 9▼ intregister_memory(void){intresult;inti;ion_phys_addr_tpaddr;void*kvptr;unsignedlongkvaddr;...