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36 Commits

Author SHA1 Message Date
Qi Wang
4d56aaeca5 Optimize away the tsd_fast() check on free fastpath. 
To ensure that the free fastpath can tolerate uninitialized tsd, improved the
static initializer for rtree_ctx in tsd.
 2021-10-28 10:05:59 -07:00
Qi Wang
7dc77527ba Delete the mutex_pool module. 2021-03-29 17:19:53 -07:00
Qi Wang
3093d9455e Move the edata mergeability related functions to extent.h. 2021-03-29 17:19:53 -07:00
Qi Wang
add636596a Stop checking head state in the merge hook. 
Now that all merging go through try_acquire_edata_neighbor, the mergeablility
checks (including head state checking) are done before reaching the merge hook.
In other words, merge hook will never be called if the head state doesn't agree.
 2021-03-29 17:19:53 -07:00
Qi Wang
49b7d7f0a4 Passing down the original edata on the expand path. 
Instead of passing down the new_addr, pass down the active edata which allows us
to always use a neighbor-acquiring semantic.  In other words, this tells us both
the original edata and neighbor address.  With this change, only neighbors of a
"known" edata can be acquired, i.e. acquiring an edata based on an arbitrary
address isn't possible anymore.
 2021-03-29 17:19:53 -07:00
Qi Wang
1784939688 Use rtree tracked states to protect edata outside of ecache locks. 
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.
 2021-03-29 17:19:53 -07:00
Qi Wang
9ea235f8fe Add witness_assert_positive_depth_to_rank(). 2021-03-29 17:19:53 -07:00
Qi Wang
4d8c22f9a5 Store edata->state in rtree leaf and make edata_t 128B aligned. 
Verified that this doesn't result in any real increase of edata_t bytes
allocated.
 2021-03-29 17:19:53 -07:00
David Goldblatt
9f9247a62e Tcache fluhing: increase cache miss parallelism. 
In practice, many rtree_leaf_elm accesses are cache misses.  By restructuring,
we can make it more likely that these misses occur without blocking us from
starting later lookups, taking more of those misses in parallel.
 2021-02-04 14:10:43 -08:00
David Goldblatt
181ba7fd4d Tcache flush: Add an emap "batch lookup" path. 
For now this is a no-op; but the interface is a little more flexible for our
purposes.
 2021-02-04 14:10:43 -08:00
David Goldblatt
1ed7ec369f Emap: Add emap_assert_not_mapped. 
The counterpart to emap_assert_mapped, it lets callers check that some edata is
not already in the emap.
 2020-10-05 19:55:57 -07:00
David Goldblatt
79ae7f9211 Rtree: Remove the per-field accessors. 
We instead split things into "edata" and "metadata".
 2020-04-10 13:12:47 -07:00
David Goldblatt
bb6a418523 Emap: Drop szind/slab splitting parameters. 
After the previous diff, these are constants.
 2020-04-10 13:12:47 -07:00
David Goldblatt
50289750b3 Extent: Remove szind/slab knowledge. 2020-04-10 13:12:47 -07:00
David Goldblatt
294b276fc7 PA: Parameterize emap. Move emap_global to arena. 
This lets us test the PA module without interfering with the global emap used by
the real allocator (the one not under test).
 2020-04-10 13:12:47 -07:00
David Goldblatt
883ab327cc Emap: Move out last edata state touching. 2020-04-10 13:12:47 -07:00
David T. Goldblatt
a0c1f4ac57 Rtree: take the base allocator as a parameter. 
This facilitates better testing by avoiding mixing of the "real" base with the
base used by the rtree under test.
 2020-02-18 11:22:09 -08:00
David T. Goldblatt
7013716aaa Emap: Take (and propagate) a zeroed parameter. 
Rtree needs this, and we should really treat them similarly.
 2020-02-18 11:22:09 -08:00
David Goldblatt
7e6c8a7286 Emap: Standardize naming. 
Namespace everything under emap_, always specify what it is we're looking up
(emap_lookup -> emap_edata_lookup), and use "ctx" over "info".
 2020-02-17 10:50:51 -08:00
David Goldblatt
ac50c1e44b Emap: Remove direct access to emap internals. 
In the process, we do a few local cleanups and optimizations.  In particular,
the size safety check on tcache flush no longer does a redundant load.
 2020-02-17 10:50:51 -08:00
David Goldblatt
06e42090f7 Make jemalloc.c use the emap interface. 
While we're here, we'll also clean up some style nits.
 2020-02-17 10:50:51 -08:00
David Goldblatt
f7d9c6c42d Emap: Move in alloc_ctx lookup functionality. 2020-02-17 10:50:51 -08:00
David Goldblatt
65a54d7714 Emap: Move in szind and slab modifications. 2020-02-17 10:50:51 -08:00
David Goldblatt
9b5d105fc3 Emap: Move in iealloc. 
This is logically scoped to the emap.
 2020-02-17 10:50:51 -08:00
David Goldblatt
1d449bd9a6 Emap: Internal rtree context setting. 
The only time sharing an rtree context saves across extent operations isn't a
no-op is when tsd is unavailable.  But this happens only in situations like
thread death or initialization, and we don't care about shaving off every
possible cycle in such scenarios.
 2020-02-17 10:50:51 -08:00
David Goldblatt
08eb1e6c31 Emap: Comments and cleanup 
Document some of the public interface, and hide the functions that are no longer
used outside of the emap module.
 2020-02-17 10:50:51 -08:00
David Goldblatt
231d1477e5 Rename emap_split_prepare_t -> emap_prepare_t. 
Both the split and merge functions use it.
 2020-02-17 10:50:51 -08:00
David Goldblatt
0586a56f39 Emap: Move in merge functionality. 2020-02-17 10:50:51 -08:00
David Goldblatt
040eac77cc Tell edatas their creation arena immediately. 
This avoids having to pass it in anywhere else.
 2020-02-17 10:50:51 -08:00
David Goldblatt
7c7b702064 Emap: Move over metadata splitting logic. 2020-02-17 10:50:51 -08:00
David Goldblatt
44f5f53605 Emap: Move over deregistration functions. 2020-02-17 10:50:51 -08:00
David Goldblatt
6513d9d923 Emap: Move over deregistration boundary functions. 2020-02-17 10:50:51 -08:00
David Goldblatt
9b5ca0b09d Emap: Move in slab interior registration. 2020-02-17 10:50:51 -08:00
David Goldblatt
d05b61db4a Emap: Move extent boundary registration in. 2020-02-17 10:50:51 -08:00
David Goldblatt
ca21ce4071 Emap: Move in write_acquired from extent. 2020-02-17 10:50:51 -08:00
David Goldblatt
01f255161c Add emap, for tracking extent locking. 2020-02-17 10:50:51 -08:00