Changes between Version 5 and Version 6 of Projects/GSoC/Atomic_Operations


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Timestamp:
Aug 14, 2012, 5:46:06 PM (7 years ago)
Author:
WeiY
Comment:

/* Miscellaneous Sections */

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  • Projects/GSoC/Atomic_Operations

    v5 v6  
    4040
    4141The FreeBSD Atomic Operations API defines a set of atomic operations that can then be used to build solutions to concurrency problems. The FreeBSD implementations support a lot of target architectures, so there is more freedom to pick a starting point.
     42= NetBSD Atomic =
    4243
     44The NetBSD kernel implements seven classes of atomic memory operations. In the NetBSD kernel if the architecture provides compare and swap (CAS) each atomic operations is built on CAS. If the architecture does not provide hardware support for atomic compare and swap (CAS), atomicity is provided by a restartable sequence or by a spinlock.
     45= C11 and C++11 Atomic =
     46
     47The end of 2011 brought new releases of both the C and C++ standards for the first time both of which contain a new set of atomic types and operations. The older versions of C and C++ had no support for atomic operations at all. The older versions of GCC and Clang provide the _sync_* family of built-in functions, which provide some atomic operations support. The GCC 4.7(or newer) and latest version Clang has provided built-in functions approximately match the requirements for C++11 memory model.
    4348= References =
    4449