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Resolve bootstrapping issues when embedded in FreeBSD libc.

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b2c0d6322d (Add witness, a simple online
locking validator.) caused a broad propagation of tsd throughout the
internal API, but tsd_fetch() was designed to fail prior to tsd
bootstrapping.  Fix this by splitting tsd_t into non-nullable tsd_t and
nullable tsdn_t, and modifying all internal APIs that do not critically
rely on tsd to take nullable pointers.  Furthermore, add the
tsd_booted_get() function so that tsdn_fetch() can probe whether tsd
bootstrapping is complete and return NULL if not.  All dangerous
conversions of nullable pointers are tsdn_tsd() calls that assert-fail
on invalid conversion.
This commit is contained in:
Jason Evans
2016-05-10 22:21:10 -07:00
parent 0c12dcabc5
commit c1e00ef2a6
34 changed files with 1709 additions and 1556 deletions
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4
test/unit/junk.c
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@@ -53,10 +53,10 @@ arena_dalloc_junk_large_intercept(void *ptr, size_t usize)
}
static void
huge_dalloc_junk_intercept(tsd_t *tsd, void *ptr, size_t usize)
huge_dalloc_junk_intercept(tsdn_t *tsdn, void *ptr, size_t usize)
{
huge_dalloc_junk_orig(tsd, ptr, usize);
huge_dalloc_junk_orig(tsdn, ptr, usize);
/*
* The conditions under which junk filling actually occurs are nuanced
* enough that it doesn't make sense to duplicate the decision logic in