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Emap: Move in szind and slab modifications.

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David Goldblatt
2020-02-05 17:17:15 -08:00
committed by David Goldblatt
parent 9b5d105fc3
commit 65a54d7714
5 changed files with 30 additions and 25 deletions
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12
include/jemalloc/internal/emap.h
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@@ -79,7 +79,13 @@ struct emap_prepare_s {
* is going to be used as a slab, you still need to call emap_register_interior
* on it, though.
*
* Each operation has a "prepare" and a "commit" portion. The prepare portion
* Remap simply changes the szind and slab status of an extent's boundary
* mappings. If the extent is not a slab, it doesn't bother with updating the
* end mapping (since lookups only occur in the interior of an extent for
* slabs). Since the szind and slab status only make sense for active extents,
* this should only be called while activating or deactivating an extent.
*
* Split and merge have a "prepare" and a "commit" portion. The prepare portion
* does the operations that can be done without exclusive access to the extent
* in question, while the commit variant requires exclusive access to maintain
* the emap invariants. The only function that can fail is emap_split_prepare,
@@ -90,8 +96,8 @@ struct emap_prepare_s {
* and esn values) data for the split variants, and can be reused for any
* purpose by its given arena after a merge or a failed split.
*/
void emap_remap(tsdn_t *tsdn, emap_t *emap, edata_t *edata, size_t size,
szind_t szind, bool slab);
void emap_remap(tsdn_t *tsdn, emap_t *emap, edata_t *edata, szind_t szind,
bool slab);
bool emap_split_prepare(tsdn_t *tsdn, emap_t *emap, emap_prepare_t *prepare,
edata_t *edata, size_t size_a, szind_t szind_a, bool slab_a, edata_t *trail,
size_t size_b, szind_t szind_b, bool slab_b);