1 Atomic Operations (AtomicOps) AtomicOps,直译为原子操作,这个操作是从设备的memory space中读取目标地址的值,然后可以在这个地址写入一个新的值,并将读取的原值返回给请求方。整个“read-modify-write”的过程是原子操作(要么全部做完,要么都不做),所以叫Atomic Operations。 AtomicOps包含了三类操作: 1. FetchAd...
Atomic Operations (AtomicOps)是PCIe协议中的一种关键操作，用于在设备的memory space中进行读取、修改和写入操作。这些操作被称为“原子操作”，因为它们保证了操作的完整性和原子性，即要么整个过程执行成功，要么都不执行。AtomicOps操作包括FetchAdd、Swap和CAS三种。FetchAdd操作首先读取目标地址的值，然...
***Now, we move onto the atomic operation interfaces typically implemented with the help of assembly code.voidatomic_add(inti, atomic_t *v);voidatomic_sub(inti, atomic_t *v);voidatomic_inc(atomic_t *v);voidatomic_dec(atomic_t *v); These four routines add and subtract integral values ...
atomic_inc_uint_nv(3C) atomic_inc_ulong(3C) atomic_inc_ulong_nv(3C) atomic_inc_ushort(3C) atomic_inc_ushort_nv(3C) atomic_ops(3C) atomic_or(3C) atomic_or_16(3C) atomic_or_16_nv(3C) atomic_or_32(3C) atomic_or_32_nv(3C) atomic_or_64(3C) atomic_or_64_nv(3C) atomic_or_...
Only thing that makes any sense to me so far is the possibility that the preprocessor macros are incorrect for the system it's being built on. The atomic-ops header seems to be correctly checking for and handling ARM processors being built via gcc, but perhaps "__arm__" isn't defined ...
Installing and using atomic_opsHP Labs
复制 #ifndefUV_ATOMIC_OPS_H_#defineUV_ATOMIC_OPS_H_#include"internal.h"/* UV_UNUSED */#ifdefined(__SUNPRO_C)||defined(__SUNPRO_CC)#include<atomic.h>#endifUV_UNUSED(staticintcmpxchgi(int*ptr,int oldval,int newval));UV_UNUSED(staticvoidcpu_relax(void));/* Prefer hand-rolled assembl...
atomic_ops Semantics and Behavior of Atomic and Bitmask Operations David S. Miller This document is intended to serve as a guide to Linux port maintainers on how to implement atomic counter, bitops, and spinlock interfaces properly. The atomic_t type should be defined as a signed integer. ...
atomic_ops库( libatomic_ops ) 在新代码中,请使用C11或C ++ 14标准原子性代替此包装。 这是libatomic_ops的版本7.7.0(下一发行版开发)。 下载 您可能会在“页面或上找到更新的/稳定的版本。 另外,开发资料库中提供了最新的错误修复和新功能。 概述 ...
The atomic_ops projectHP Labs