folly::detail::AccessSpreader<std::atomic>::getcpuFunc Not Found

[helloleef]

link libfolly.a , g++6.2 , Error info is

folly/detail/CacheLocality.h:256: undefined reference to folly::detail::AccessSpreader<std::atomic>::getcpuFunc

[jack17529]

@Orvid Can I work on this one?

[Orvid]

That function no longer lives in detail/CacheLocality.h, it's been moved to concurrency/CacheLocality.h. If you can still reproduce the issue then feel free to fix it.

[jack17529]

@Orvid , this may be a silly question , but may I please know what does this line do -
https://github.com/facebook/folly/blob/master/folly/concurrency/CacheLocality.h#L96
I only have coded introductory templates.

[Orvid]

It declares Atom as a template template parameter:
http://en.cppreference.com/w/cpp/language/template_parameters#Template_template_parameter

[jack17529]

@Orvid can you please explain the meaning behind doing - https://github.com/facebook/folly/blob/master/folly/concurrency/CacheLocality.h#L385
this ?

[Orvid]

It's popping a value off of the free-list that had been previously pushed to at:
https://github.com/facebook/folly/blob/master/folly/concurrency/CacheLocality.h#L407
by storing the previous value in the first 8-bytes of the allocation.

[jack17529]

@Orvid the vcpkg installed old repositories in my system and is now not updating them , I have opened issue on vcpkg repository for this .