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Always initialize thread local storage

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We had previously not enabled TLS in MODE=tiny in order to keep the
smallest example programs (e.g. life.com) just 16kb in size. But it
was error prone doing that, so now we just always enable it because
this change uses hacks to ensure it won't increase life.com's size.

This change also fixes a bug on NetBSD, where signal handlers would
break thread local storage if SA_SIGINFO was being used. This looks
like it might be a bug in NetBSD, but it's got a simple workaround.
This commit is contained in:
Justine Tunney 2022-07-18 22:26:11 -07:00
parent 057e8f5b54
commit 69f4152f38
33 changed files with 174 additions and 123 deletions
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6
third_party/dlmalloc/README.cosmo vendored
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@ -9,5 +9,7 @@ LICENSE
LOCAL CHANGES
- Introduce __oom_hook()
- Favor pause (rather than sched_yield) for spin locks
- Use faster two power roundup for memalign()
- Poison maps to integrate with Address Sanitizer
- Introduce __oom_hook() by using _mapanon() vs. mmap()
- Wrap locks with __threaded check to improve perf lots