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Emap: Move over deregistration functions.

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David Goldblatt 2020-01-30 15:02:52 -08:00 committed by David Goldblatt
parent 6513d9d923
commit 44f5f53605
3 changed files with 15 additions and 23 deletions
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2
include/jemalloc/internal/emap.h
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@ -67,5 +67,7 @@ void emap_register_interior(tsdn_t *tsdn, emap_t *emap, rtree_ctx_t *rtree_ctx,
void emap_deregister_boundary(tsdn_t *tsdn, emap_t *emap,
rtree_ctx_t *rtree_ctx, edata_t *edata);
void emap_deregister_interior(tsdn_t *tsdn, emap_t *emap,
rtree_ctx_t *rtree_ctx, edata_t *edata);
#endif /* JEMALLOC_INTERNAL_EMAP_H */

11
src/emap.c
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@ -172,3 +172,14 @@ emap_deregister_boundary(tsdn_t *tsdn, emap_t *emap, rtree_ctx_t *rtree_ctx,
emap_rtree_write_acquired(tsdn, emap, elm_a, elm_b, NULL, SC_NSIZES,
false);
}
void
emap_deregister_interior(tsdn_t *tsdn, emap_t *emap, rtree_ctx_t *rtree_ctx,
edata_t *edata) {
assert(edata_slab_get(edata));
for (size_t i = 1; i < (edata_size_get(edata) >> LG_PAGE) - 1; i++) {
rtree_clear(tsdn, &emap->rtree, rtree_ctx,
(uintptr_t)edata_base_get(edata) + (uintptr_t)(i <<
LG_PAGE));
}
}

25
src/extent.c
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@ -357,27 +357,6 @@ extent_reregister(tsdn_t *tsdn, edata_t *edata) {
assert(!err);
}
/*
* Removes all pointers to the given extent from the global rtree indices for
* its interior. This is relevant for slab extents, for which we need to do
* metadata lookups at places other than the head of the extent. We deregister
* on the interior, then, when an extent moves from being an active slab to an
* inactive state.
*/
static void
extent_interior_deregister(tsdn_t *tsdn, rtree_ctx_t *rtree_ctx,
edata_t *edata) {
size_t i;
assert(edata_slab_get(edata));
for (i = 1; i < (edata_size_get(edata) >> LG_PAGE) - 1; i++) {
rtree_clear(tsdn, &emap_global.rtree, rtree_ctx,
(uintptr_t)edata_base_get(edata) + (uintptr_t)(i <<
LG_PAGE));
}
}
/*
* Removes all pointers to the given extent from the global rtree.
*/
@ -389,7 +368,7 @@ extent_deregister_impl(tsdn_t *tsdn, edata_t *edata, bool gdump) {
emap_lock_edata(tsdn, &emap_global, edata);
emap_deregister_boundary(tsdn, &emap_global, rtree_ctx, edata);
if (edata_slab_get(edata)) {
extent_interior_deregister(tsdn, rtree_ctx, edata);
emap_deregister_interior(tsdn, &emap_global, rtree_ctx, edata);
edata_slab_set(edata, false);
}
emap_unlock_edata(tsdn, &emap_global, edata);
@ -1073,7 +1052,7 @@ extent_record(tsdn_t *tsdn, arena_t *arena, ehooks_t *ehooks, ecache_t *ecache,
edata_szind_set(edata, SC_NSIZES);
if (edata_slab_get(edata)) {
extent_interior_deregister(tsdn, rtree_ctx, edata);
emap_deregister_interior(tsdn, &emap_global, rtree_ctx, edata);
edata_slab_set(edata, false);
}