79
PMEM_F_MEM_NONTEMPORAL will tell these functions to use non-temporal stores instead of
choosing which instructions to use based on the size of the range. The full list of flags is
documented in the man pages for these functions.
Summary
This chapter demonstrated some of the fairly small set of APIs provided by libpmem.
This library does not track what changed for you, does not provide power fail-safe
transactions, and does not provide an allocator. Libraries like libpmemobj (described in
the next chapter) provide all those tasks and use libpmem internally for simple flushing
and copying.
Open Access This chapter is licensed under the terms of the Creative
Commons Attribution 4.0 International License (http://creativecommons.
org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and
reproduction in any medium or format, as long as you give appropriate credit to the
original author(s) and the source, provide a link to the Creative Commons license and
indicate if changes were made.
The images or other third party material in this chapter are included in the chapter’s
Creative Commons license, unless indicated otherwise in a credit line to the material. If
material is not included in the chapter’s Creative Commons license and your intended
use is not permitted by statutory regulation or exceeds the permitted use, you will need
to obtain permission directly from the copyright holder.
Chapter 6 libpmem: low-level persistent memory support
PMEM_F_MEM_NONTEMPORAL will tell these functions to use non-temporal stores instead of
choosing which instructions to use based on the size of the range. The full list of flags is
documented in the man pages for these functions.
Summary
This chapter demonstrated some of the fairly small set of APIs provided by libpmem.
This library does not track what changed for you, does not provide power fail-safe
transactions, and does not provide an allocator. Libraries like libpmemobj (described in
the next chapter) provide all those tasks and use libpmem internally for simple flushing
and copying.
Open Access This chapter is licensed under the terms of the Creative
Commons Attribution 4.0 International License (http://creativecommons.
org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and
reproduction in any medium or format, as long as you give appropriate credit to the
original author(s) and the source, provide a link to the Creative Commons license and
indicate if changes were made.
The images or other third party material in this chapter are included in the chapter’s
Creative Commons license, unless indicated otherwise in a credit line to the material. If
material is not included in the chapter’s Creative Commons license and your intended
use is not permitted by statutory regulation or exceeds the permitted use, you will need
to obtain permission directly from the copyright holder.
Chapter 6 libpmem: low-level persistent memory support
