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Use rtree tracked states to protect edata outside of ecache locks.

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This avoids the addr-based mutexes (i.e. the mutex_pool), and instead relies on
the metadata tracked in rtree leaf: the head state and extent_state.  Before
trying to access the neighbor edata (e.g. for coalescing), the states will be
verified first -- only neighbor edatas from the same arena and with the same
state will be accessed.
This commit is contained in:
Qi Wang 2021-03-04 14:33:40 -08:00 • committed by Qi Wang
parent 9ea235f8fe
commit 1784939688
7 changed files with 366 additions and 277 deletions
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3
src/eset.c
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@ -78,7 +78,8 @@ eset_insert(eset_t *eset, edata_t *edata) {
void
eset_remove(eset_t *eset, edata_t *edata) {
assert(edata_state_get(edata) == eset->state);
assert(edata_state_get(edata) == eset->state ||
edata_state_in_transition(edata_state_get(edata)));
size_t size = edata_size_get(edata);
size_t psz = sz_psz_quantize_floor(size);