OSX/BSD/Solaris support blockers

[jmealo]

Kudos on Hindsight!

Here is a list of known blockers preventing hindsight from running on various systems:

Known issues:

• pthread_timedjoin_np is not available on non-glib operating systems source
• clock_get_time is not available on OSX until 10.12 (Sierra) this issue provides an outline of how the hack can be conditionally applied for maximum compatibility.
• sem_init is deprecated and sem_timedwait is unavailable (possible solution)
• inotify (possible solution from @zloidemon)

@trink: Perhaps contributors can champion these issues with a little guidance on what solutions you'd be comfortable to accept upstream with a PR?

Thank you for your hard work,
Jeff

[trink]

There have been discussions of making Hindsight cross platform (including Windows), ranging from C11 threading/wrapper to a Rust implementation. It is simply a matter of time and energy which we have decided to devote elsewhere. This next quarter will focus on integration testing (mainly for the various Mozilla Heka sandboxes but it will also provide good coverage of Hindsight itself; reducing a lot of manual test effort).

OSX/BSD/Solaris are a quicker wins but wouldn't necessarily help towards the longer term cross platform goal, it would also add to the support and test burden in the short term. Since we don't use those platforms in our infrastructure an automated build and test environment would be required for each as part of those changes.

As for the clock_get_time code, the portable solution in the lua_sandbox can be used.

[trink]

inotify should be added to this list

Related: #72

[zloidemon]

inotify might solved by libinotify-kqueue

[beorn-]

The pthread_timedjoin_np() is a FreeBSD extension which first appeared in FreeBSD 6.1.

[jmealo]

@beorn-: Is the document that I linked to above incorrect/out of date?

FreeBSD 6.4 has a function of this name in libthr but not in libpthread, and it also is missing a declaration.

[beorn-]

I think so this is taken from a freebsd man

STANDARDS
     The pthread_join() function conforms to ISO/IEC 9945-1:1996
     (``POSIX.1'').  The pthread_timedjoin_np() is a FreeBSD extension which
     first appeared in FreeBSD 6.1.

FreeBSD 11.0-RELEASE-p9        January 23, 2010        FreeBSD 11.0-RELEASE-p9