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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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8
src/zone.c
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@@ -56,7 +56,7 @@ zone_size(malloc_zone_t *zone, void *ptr)
* not work in practice, we must check all pointers to assure that they
* reside within a mapped chunk before determining size.
*/
return (ivsalloc(tsd_fetch(), ptr, config_prof));
return (ivsalloc(tsdn_fetch(), ptr, config_prof));
}
static void *
@@ -87,7 +87,7 @@ static void
zone_free(malloc_zone_t *zone, void *ptr)
{
if (ivsalloc(tsd_fetch(), ptr, config_prof) != 0) {
if (ivsalloc(tsdn_fetch(), ptr, config_prof) != 0) {
je_free(ptr);
return;
}
@@ -99,7 +99,7 @@ static void *
zone_realloc(malloc_zone_t *zone, void *ptr, size_t size)
{
if (ivsalloc(tsd_fetch(), ptr, config_prof) != 0)
if (ivsalloc(tsdn_fetch(), ptr, config_prof) != 0)
return (je_realloc(ptr, size));
return (realloc(ptr, size));
@@ -123,7 +123,7 @@ zone_free_definite_size(malloc_zone_t *zone, void *ptr, size_t size)
{
size_t alloc_size;
alloc_size = ivsalloc(tsd_fetch(), ptr, config_prof);
alloc_size = ivsalloc(tsdn_fetch(), ptr, config_prof);
if (alloc_size != 0) {
assert(alloc_size == size);
je_free(ptr);