N 3934 : Towards Implementation and Use of memory order consume Doc . No . : WG 21 / N 3934 Date : 2014 - 02 - 14 Reply
نویسندگان
چکیده
Although RCU is gaining significant use both within and outside of the Linux kernel, there are no know high-performance implementations of memory order consume loads in any C11 or C++11 environments. This situation suggests that some change is in order: After all, if the standard does not support this use case, the corresponding users can be expected to continue to exploit whatever implementation-specific facilities provide the required functionality. This document therefore provides a brief overview of RCU in Section 2 and surveys memory order consume use cases within the Linux kernel in Section 3. Section 4 looks at how dependency ordering is currently supported in pre-C11 implementations, and then Section 5 looks at possible ways to support those use cases in existing C11 and C++11 implementations, followed by some thoughts on incremental paths towards official support of these use cases in the standards. Note: SC22/WG14 liason issue.
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