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alloc: de-static external_pointer

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Like alloc_size, this will require amplification internally.

This patch also restores performance to the status quo ante; Clang can once
again see enough to generate the same code as it did before de-static-ing
alloc_size.
This commit is contained in:
Nathaniel Filardo
2020-12-15 17:46:40 +00:00
committed by Matthew Parkinson
parent 1042fc908a
commit f295a3f191
4 changed files with 14 additions and 13 deletions
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6
src/mem/alloc.h
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@@ -357,13 +357,13 @@ namespace snmalloc
}
template<Boundary location = Start>
static void* external_pointer(void* p)
void* external_pointer(void* p)
{
#ifdef SNMALLOC_PASS_THROUGH
error("Unsupported");
UNUSED(p);
#else
uint8_t chunkmap_slab_kind = ChunkMap::get(address_cast(p));
uint8_t chunkmap_slab_kind = chunkmap().get(address_cast(p));
Superslab* super = Superslab::get(p);
if (chunkmap_slab_kind == CMSuperslab)
@@ -395,7 +395,7 @@ namespace snmalloc
ss,
-(static_cast<ptrdiff_t>(1)
<< (chunkmap_slab_kind - CMLargeRangeMin + SUPERSLAB_BITS)));
chunkmap_slab_kind = ChunkMap::get(ss);
chunkmap_slab_kind = chunkmap().get(ss);
}
if (chunkmap_slab_kind == CMNotOurs)