Neal Richardson created ARROW-6977:
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Summary: [C++] Only enable jemalloc background_thread if feature
is supported
Key: ARROW-6977
URL: https://issues.apache.org/jira/browse/ARROW-6977
Project: Apache Arrow
Issue Type: Bug
Components: C++
Environment: macOS 10.14, Homebrew
Reporter: Neal Richardson
Fix For: 1.0.0
Followup to ARROW-6910. When loading the R package after that patch merged, I
get this new message:
{code}
$ R
> library(arrow)
<jemalloc>: option background_thread currently supports pthread only
{code}
https://github.com/jemalloc/jemalloc/blob/3d84bd57f4954a17059bd31330ec87d3c1876411/src/background_thread.c#L884-L887
is where the message comes from. Tracing that further,
{{have_background_thread}} comes from
https://github.com/jemalloc/jemalloc/blob/21cfe59ff7b10a61dabe26cd3dbfb7a255e1f5e8/include/jemalloc/internal/jemalloc_preamble.h.in#L205-L211,
which gets set in {{configure.ac}} here:
https://github.com/jemalloc/jemalloc/blob/d2dddfb82aac9f2212922eb90324e84790704bfe/configure.ac#L2155-L2157
In sum, on my system, that flag doesn't get set, so {{have_background_thread}}
is false, and when that is false and the {{background_thread}} option is true,
I get that message printed. And I do not want to see that message.
cc [~wesm]
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