[Ganglia-developers] making gmond thread safe

[<Dan...@ba...>]

Is there any harm in using APR_POLLSET_THREADSAFE in the call to
apr_pollset_create in gmond.c?

  apr_pollset_create(&listen_channels, total_listen_channels,
global_context, 0);

becomes...

  apr_pollset_create(&listen_channels, total_listen_channels,
global_context, APR_POLLSET_THREADSAFE);

gmond doesn't create any threads by default, but some metric
implementations or other code may be threaded.

Without this, I noticed my application behaving badly when another
thread tried to independently make a HTTP request through libcurl.

The docs say that the flag only affects concurrent access to the pollset
being created, but I suspect it may have a wider impact on APR thread
safety.

http://apr.apache.org/docs/apr/1.3/group__apr__poll.html#g4ca4056a19daee
8fe94ddba100fe2326

Regards,

Daniel
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