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1536 Commits

Author SHA1 Message Date
David Goldblatt
722652222a PAC: Move in edata_cache accesses. 2020-07-09 13:41:04 -07:00
David Goldblatt
777b0ba965 Add PAC: Page allocator classic. 
For now, this is just a stub containing the ecaches, with no surrounding code
changed.  Eventually all the core allocator bits will be moved in, in the
subsequent stack of commits.
 2020-07-09 13:41:04 -07:00
David Goldblatt
1b5f632e0f Introduce PAI: Page allocator interface 2020-07-09 13:41:04 -07:00
David Goldblatt
3cf19c6e5e atomic: add atomic_load_sub_store 2020-07-09 13:41:04 -07:00
David Goldblatt
ae541d3fab Edata: Reserve some space for hugepages. 2020-07-08 13:20:59 -07:00
David Goldblatt
392f645f4d Edata: split up different list linkage uses. 2020-07-08 13:20:59 -07:00
David Goldblatt
129b727058 Add typed-list module. 
This gives some named convenience wrappers.
 2020-07-08 13:20:59 -07:00
David Carlier
00f06c9beb enabling mpss on solaris/illumos. 
reusing slighty linux configuration as possible, aligning the
 address range to HUGEPAGE.
 2020-07-06 09:59:10 -07:00
Yinan Zhang
c2e7a06392 No need to intercept prof_dump_header() in tests 2020-06-29 14:27:50 -07:00
Yinan Zhang
f58ebdff7a Generalize prof_cnt_all() for testing 2020-06-29 14:27:50 -07:00
Yinan Zhang
d4259ea53b Simplify signatures for prof dump functions 2020-06-29 14:27:50 -07:00
Yinan Zhang
1f5fe3a3e3 Pass write callback explicitly in prof_data 2020-06-29 14:27:50 -07:00
Yinan Zhang
dad821bb22 Move unwind to prof_sys 2020-06-29 14:27:50 -07:00
Yinan Zhang
d128efcb6a Relocate a few prof utilities to the right modules 2020-06-29 14:27:50 -07:00
Yinan Zhang
4736fb4fc9 Move file handling logic in prof_data to prof_sys 2020-06-29 14:27:50 -07:00
Yinan Zhang
767a2e1790 Move file handling logic in prof to prof_sys 2020-06-29 14:27:50 -07:00
Yinan Zhang
03ae509f32 Create prof_sys module for reading system thread name 2020-06-29 14:27:50 -07:00
Yinan Zhang
adfd9d7b1d Change tsdn to tsd for thread name allocation 2020-06-29 14:27:50 -07:00
Yinan Zhang
841af2b426 Move thread name handling to prof_data module 2020-06-29 14:27:50 -07:00
Yinan Zhang
8118056c03 Expose prof_data testing internals only in prof tests 2020-06-29 14:27:50 -07:00
Yinan Zhang
f43ac8543e Correct prof header macro namings 2020-06-29 14:27:50 -07:00
Yinan Zhang
5d292b5660 Push error handling logic out of core dumping logic 2020-06-29 14:27:50 -07:00
Yinan Zhang
f541871f5d Reduce prof dump buffer size in debug build 2020-06-29 14:27:50 -07:00
Yinan Zhang
354183b10d Define prof dump buffer size centrally 2020-06-29 14:27:50 -07:00
Yinan Zhang
7455813e57 Make dump file writing replaceable in test 2020-06-29 14:27:50 -07:00
Yinan Zhang
21e44c45d9 Make maps file opening replaceable in test 2020-06-29 14:27:50 -07:00
Yinan Zhang
f307b25804 Only replace the dump file opening function in test 2020-06-29 14:27:50 -07:00
Yinan Zhang
d460333efb Improve naming for prof system thread name option 2020-06-24 14:32:01 -07:00
David T. Goldblatt
25e43c6022 Witness: Make ranks an enum. 
This lets us avoid having to increment a bunch of values manually every time we
add a new sort of lock.
 2020-06-19 18:05:08 -07:00
Yinan Zhang
b7858abfc0 Expose prof testing internal functions 2020-06-19 09:16:51 -07:00
Jon Haslam
4aea743279 High Resolution Timestamps for Profiling 2020-06-15 12:12:49 -07:00
David Goldblatt
d82a164d0d Add thread.peak.[read|reset] mallctls. 
These can be used to track net allocator activity on a per-thread basis.
 2020-06-11 13:54:22 -07:00
David Goldblatt
fe7108305a Add peak_t, for tracking allocator net max. 2020-06-11 13:54:22 -07:00
Yinan Zhang
3e19ebd2ea Add lock to protect prof last-N dumping 2020-06-09 17:03:05 -07:00
Yinan Zhang
857ebd3daf Make edata pointer on prof recent record an atomic fence 2020-06-09 17:03:05 -07:00
David Goldblatt
6cdac3c573 Tcache: Make flush fractions configurable. 2020-05-16 13:34:23 -07:00
David Goldblatt
ee72bf1cfd Tcache: Add tcache gc delay option. 
This can reduce flushing frequency for small size classes.
 2020-05-16 13:34:23 -07:00
David Goldblatt
d338dd45d7 Tcache: Make incremental gc bytes configurable. 2020-05-16 13:34:23 -07:00
David Goldblatt
ec0b579563 Tcache: Privatize opt_lg_tcache_max default. 2020-05-16 13:34:23 -07:00
David Goldblatt
10b96f6351 Tcache: Remove some unused gc constants. 2020-05-16 13:34:23 -07:00
David Goldblatt
181093173d Tcache: make slot sizing configurable. 2020-05-16 13:34:23 -07:00
David Goldblatt
b58dea8d1b Cache bin: expose ncached_max publicly. 2020-05-16 13:34:23 -07:00
David Goldblatt
634afc4124 Tcache: Make size computation configurable. 2020-05-16 13:34:23 -07:00
Brooks Davis
27f29e424b LQ_QUANTUM should be 4 on mips64 hardware. 
This matches the ABI stack alignment requirements.
 2020-05-14 10:30:37 -07:00
David Goldblatt
eda9c2858f Edata: zero stack edatas before initializing. 
This avoids some UB. No compilers take advantage of it for now, but no sense in
tempting fate.
 2020-05-14 10:30:20 -07:00
Yinan Zhang
dcea2c0f8b Get rid of TSD -> thread event dependency 2020-05-12 09:16:16 -07:00
Yinan Zhang
b06dfb9ccc Push event handlers to constituent modules 2020-05-12 09:16:16 -07:00
Yinan Zhang
abd4674931 Extract out per event postponed wait time fetching 2020-05-12 09:16:16 -07:00
Yinan Zhang
f72014d097 Only compute thread event threshold once per trigger 2020-05-12 09:16:16 -07:00
Yinan Zhang
6de77799de Move thread event wait time update to local 2020-05-12 09:16:16 -07:00
Yinan Zhang
733ae918f0 Extract out per event new wait time fetching 2020-05-12 09:16:16 -07:00
Yinan Zhang
1e2524e15a Do not reset sample wait time when re-initing tdata 2020-05-12 09:16:16 -07:00
Yinan Zhang
855d20f6f3 Remove outdated comments in thread event 2020-05-12 09:16:16 -07:00
Yinan Zhang
fc052ff728 Migrate counter to use locked int 2020-05-12 08:23:15 -07:00
Yinan Zhang
b543c20a94 Minor update to locked int 2020-05-12 08:23:15 -07:00
Yinan Zhang
f533ab6da6 Add forking handling for stats 2020-05-11 15:35:06 -07:00
Yinan Zhang
4d970f8bfc Add forking handling for counter module 2020-05-11 15:35:06 -07:00
Yinan Zhang
2097e1945b Unify write callback signature 2020-05-11 14:51:24 -07:00
Yinan Zhang
fef9abdcc0 Cleanup tcache allocation logic 
The logic in tcache allocation no longer involves profiling or
filling.
 2020-05-11 12:24:56 -07:00
Yinan Zhang
e6cb6919c0 Consolidate prof inline function headers 
The prof inline functions are no longer involved in a circular
dependency, so consolidate the two headers into one.
 2020-05-11 12:24:56 -07:00
Yinan Zhang
d454af90f1 Remove unused prof_accum field from arena 2020-05-11 12:24:56 -07:00
Yinan Zhang
8be5584494 Initialize prof idump counter once rather than once per arena 2020-05-11 12:24:56 -07:00
Yinan Zhang
e10e5059e8 Make prof_idump_accum() non-inline 2020-05-11 12:24:56 -07:00
Yinan Zhang
039bfd4e30 Do not rollback prof idump counter in arena_prof_promote() 2020-05-11 12:24:56 -07:00
David Goldblatt
46471ea327 SC: Name the max lookup constant. 2020-05-04 12:27:07 -07:00
David Goldblatt
79dd0c04ed SC: Simplify SC_NPSIZES computation. 
Rather than taking all the sizes and subtracting out those that don't fit, we
instead just add up all the ones that do.
 2020-05-04 12:27:07 -07:00
David Goldblatt
4f8efba824 TSD: Make rtree_ctx a slow-path field. 
Performance-sensitive users will use sized deallocation facilities, so that
actually touching the rtree_ctx is unnecessary.  We make it the last element of
the slow data, so that it is for practical purposes almost-fast.
 2020-04-14 15:20:19 -07:00
David Goldblatt
cd29ebefd0 Tcache: treat small and large cache bins uniformly 2020-04-14 15:20:19 -07:00
David Goldblatt
a13fbad374 Tcache: split up fast and slow path data. 2020-04-14 15:20:19 -07:00
David Goldblatt
7099c66205 Arena: fill in terms of cache_bins. 2020-04-14 15:20:19 -07:00
David Goldblatt
40e7aed59e TSD: Move in some of the tcache fields. 
We had put these in the tcache for cache optimization reasons.  After the
previous diff, these no longer apply.
 2020-04-14 15:20:19 -07:00
David Goldblatt
58a00df238 TSD: Put all fast-path data together. 2020-04-14 15:20:19 -07:00
David Goldblatt
877af247a8 QL, QR: Add documentation. 2020-04-11 10:32:11 -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
dc26b30094 Rtree: Clean up compact/non-compact split. 2020-04-10 13:12:47 -07:00
David Goldblatt
93b99dd140 Extent: Stop passing an edata_cache everywhere. 
We already pass the pa_shard_t around everywhere; we can just use that.
 2020-04-10 13:12:47 -07:00
David Goldblatt
11c47cb133 Extent: Take "bool zero" over "bool *zero". 2020-04-10 13:12:47 -07:00
David Goldblatt
1a1124462e PA: Take zero as a bool rather than as a bool *. 
Now that we've moved junking to a higher level of the allocation stack, we don't
care about this performance optimization (which only occurred in debug modes).
 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
f730577277 Eset: Parameterize last globals accesses. 
I.e. opt_retain and maps_coalesce.
 2020-04-10 13:12:47 -07:00
David Goldblatt
7bb6e2dc0d Eset: take opt_lg_max_active_fit as a parameter. 
This breaks its dependence on the global.
 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 Goldblatt
12eb888e54 Edata: Add a ranged bit. 
We steal the dumpable bit, which we ended up not needing.
 2020-04-10 13:12:47 -07:00
David Goldblatt
bd4fdf295e Rtree: Pull leaf contents into their own struct. 2020-04-10 13:12:47 -07:00
David Goldblatt
faec7219b2 PA: Move in decay initialization. 2020-04-10 13:12:47 -07:00
David Goldblatt
45671e4a27 PA: Move in retain growth limit setting. 2020-04-10 13:12:47 -07:00
David Goldblatt
daefde88fe PA: Move in mutex stats reading. 2020-04-10 13:12:47 -07:00
David Goldblatt
07675840a5 PA: Move in some more internals accesses. 2020-04-10 13:12:47 -07:00
David Goldblatt
238f3c7430 PA: Move in full stats merging. 2020-04-10 13:12:47 -07:00
David Goldblatt
81c6027592 Arena stats: Give it its own "mapped". 
This distinguishes it from the PA mapped stat, which is now named "pa_mapped" to
avoid confusion. The (derived) arena stat includes base memory, and the PA stat
is no longer partially derived.
 2020-04-10 13:12:47 -07:00
David Goldblatt
506d907e40 PA: Move in basic stats merging. 2020-04-10 13:12:47 -07:00
David Goldblatt
f29f6090f5 PA: Add pa_extra.c and put PA forking there. 2020-04-10 13:12:47 -07:00
David Goldblatt
565045ef71 Arena: Make more derived stats non-atomic/locked. 2020-04-10 13:12:47 -07:00
David Goldblatt
d0c43217b5 Arena stats: Move retained to PA, use plain ints. 
Retained is a property of the allocated pages.  The derived fields no longer
require any locking; they're computed on demand.
 2020-04-10 13:12:47 -07:00
David Goldblatt
e2cf3fb1a3 PA: Move in all modifications of mapped. 2020-04-10 13:12:47 -07:00
David Goldblatt
436789ad96 PA: Make mapped stat atomic. 
We always have atomic_zu_t, and mapped/unmapped transitions are always expensive
enough that trying to piggyback on a lock is a waste of time.
 2020-04-10 13:12:47 -07:00
David Goldblatt
3c28aa6f17 PA: Move edata_avail stat in, make it non-atomic. 2020-04-10 13:12:47 -07:00
David Goldblatt
f6bfa3dcca Move extent stats to the PA module. 
While we're at it, make them non-atomic -- they are purely derived statistics
(and in fact aren't even in the arena_t or pa_shard_t).
 2020-04-10 13:12:47 -07:00
David Goldblatt
527dd4cdb8 PA: Move in nactive counter. 2020-04-10 13:12:47 -07:00
David Goldblatt
c075fd0bcb PA: Minor cleanups and comment fixes. 2020-04-10 13:12:47 -07:00
David Goldblatt
46a9d7fc0b PA: Move in rest of purging. 2020-04-10 13:12:47 -07:00
David Goldblatt
2d6eec7b5c PA: Move in decay-all pathway. 2020-04-10 13:12:47 -07:00
David Goldblatt
65698b7f2e PA: Remove public visibility of some internals. 2020-04-10 13:12:47 -07:00
David Goldblatt
f012c43be0 PA: Move in decay_to_limit 2020-04-10 13:12:47 -07:00
David Goldblatt
3034f4a508 PA: Move in decay_stashed. 2020-04-10 13:12:47 -07:00
David Goldblatt
aef28b2f8f PA: Move in stash_decayed. 2020-04-10 13:12:47 -07:00
David Goldblatt
71fc0dc968 PA: Move in remaining page allocation functions. 2020-04-10 13:12:47 -07:00
David Goldblatt
74958567a4 PA: have expand take sizes instead of new usize. 
This avoids involving usize, which makes some of the stats modifications more
intuitively correct.
 2020-04-10 13:12:47 -07:00
David Goldblatt
5bcc2c2ab9 PA: Have expand take szind and slab. 
This isn't really necessary, but having a uniform API will help us later.
 2020-04-10 13:12:47 -07:00
David Goldblatt
0880c2ab97 PA: Have large expands use it. 2020-04-10 13:12:47 -07:00
David Goldblatt
9f93625c14 PA: Move in arena large allocation functionality. 2020-04-10 13:12:47 -07:00
David Goldblatt
7624043a41 PA: Add ehook-getting support. 2020-04-10 13:12:47 -07:00
David Goldblatt
eba35e2e48 Remove extent knowledge of arena. 2020-04-10 13:12:47 -07:00
David Goldblatt
e77f47a85a Move arena decay getters to PA. 2020-04-10 13:12:47 -07:00
David Goldblatt
f77cec311e Decay: Take current time as an argument. 
This better facilitates testing.
 2020-04-10 13:12:47 -07:00
David Goldblatt
d1d7e1076b Decay: move in some background_thread accesses. 2020-04-10 13:12:47 -07:00
David Goldblatt
cdb916ed3f Decay: Add comments for the public API. 2020-04-10 13:12:47 -07:00
David Goldblatt
8f2193dc8d Decay: Move in arena decay functions. 2020-04-10 13:12:47 -07:00
David Goldblatt
7b62885476 Introduce decay module and put decay objects in PA 2020-04-10 13:12:47 -07:00
David Goldblatt
497836dbc8 Arena stats: mark edata_avail as derived. 
The true number is in the edata_cache itself.
 2020-04-10 13:12:47 -07:00
David Goldblatt
3192d6b77d Extents: Have extent_dalloc_gap take ehooks. 
We're almost to the point where the extent code doesn't know about arenas at
all.  In that world, we shouldn't pull them out of the arena.
 2020-04-10 13:12:47 -07:00
David Goldblatt
22a0a7b93a Move arena_decay_extent to extent module. 2020-04-10 13:12:47 -07:00
David Goldblatt
70d12ffa05 PA: Move mapped into pa stats. 2020-04-10 13:12:47 -07:00
David Goldblatt
6ca918d0cf PA: Add a stats comment. 2020-04-10 13:12:47 -07:00
David Goldblatt
ce8c0d6c09 PA: Move in arena extent_sn counter. 
Just another step towards making PA self-contained.
 2020-04-10 13:12:47 -07:00
David Goldblatt
1ad368c8b7 PA: Move in decay stats. 2020-04-10 13:12:47 -07:00
David Goldblatt
356aaa7dc6 Introduce lockedint module. 
This pulls out the various abstractions where some stats counter is sometimes an
atomic, sometimes a plain variable, sometimes always protected by a lock,
sometimes protected by reads but not writes, etc.  With this change, these cases
are treated consistently, and access patterns tagged.

In the process, we fix a few missed-update bugs (where one caller assumes
"protected-by-a-lock" semantics and another does not).
 2020-04-10 13:12:47 -07:00
David Goldblatt
acd0bf6a26 PA: move in ecache_grow. 2020-04-10 13:12:47 -07:00
David Goldblatt
32cb7c2f0b PA: Add a stats type. 2020-04-10 13:12:47 -07:00
David Goldblatt
688fb3eb89 PA: Move in the arena edata_cache. 2020-04-10 13:12:47 -07:00
David Goldblatt
8433ad84ea PA: move in shard initialization. 2020-04-10 13:12:47 -07:00
David Goldblatt
a24faed569 PA: Move in the ecache_t objects. 2020-04-10 13:12:47 -07:00
David Goldblatt
585f925055 Move cache index randomization out of extent. 
This is logically at a higher level of the stack; extent should just allocate
things at the page-level; it shouldn't care exactly why the callers wants a
given number of pages.
 2020-04-10 13:12:47 -07:00
David Goldblatt
12be9f5727 Add a stub PA module -- a page allocator. 2020-04-10 13:12:47 -07:00
Yinan Zhang
c4e9ea8cc6 Get rid of locks in prof recent test 2020-04-07 17:22:24 -07:00
Yinan Zhang
2deabac079 Get rid of custom iterator for last-N records 2020-04-07 17:22:24 -07:00
Yinan Zhang
a5ddfa7d91 Use ql for prof last-N list 2020-04-07 17:22:24 -07:00
Yinan Zhang
ce17af4221 Better structure ql module 2020-04-06 09:50:27 -07:00
Yinan Zhang
4b66297ea0 Add move constructor to ql module 2020-04-06 09:50:27 -07:00
Yinan Zhang
a62b7ed928 Add emptiness checking to ql module 2020-04-06 09:50:27 -07:00
Yinan Zhang
1dd24ca6d2 Add rotate functionality to ql module 2020-04-06 09:50:27 -07:00
Yinan Zhang
0dc95a882f Add concat and split functionality to ql module 2020-04-06 09:50:27 -07:00
Yinan Zhang
1ad06aa53b deduplicate insert and delete logic in qr module 2020-04-06 09:50:27 -07:00
Yinan Zhang
c9d56cddf2 Optimize meld in qr module 
The goal of `qr_meld()` is to change the following four fields
`(a->prev, a->prev->next, b->prev, b->prev->next)` from the values
`(a->prev, a, b->prev, b)` to `(b->prev, b, a->prev, a)`.

This commit changes

```
a->prev->next = b;
b->prev->next = a;
temp = a->prev;
a->prev = b->prev;
b->prev = temp;
```

to

```
temp = a->prev;
a->prev = b->prev;
b->prev = temp;
a->prev->next = a;
b->prev->next = b;
```

The benefit is that we can use `b->prev->next` for `temp`, and so
there's no need to pass in `a_type`.

The restriction is that `b` cannot be a `qr_next()` macro, so users
of `qr_meld()` must pay attention.  (Before this change, neither `a`
nor `b` could be a `qr_next()` macro.)
 2020-04-06 09:50:27 -07:00
Yinan Zhang
f9aad7a49b Add piping API to buffered writer 2020-04-01 09:41:20 -07:00
Yinan Zhang
09cd79495f Encapsulate buffer allocation failure in buffered writer 2020-04-01 09:41:20 -07:00
David Goldblatt
3b4a03b92b Mac: don't declare system functions as nothrow. 
This contradicts the system headers, which can lead to breakages.
 2020-03-26 14:11:24 -07:00
Yinan Zhang
2256ef8961 Add option to fetch system thread name on each prof sample 2020-03-24 21:39:57 -07:00
Yinan Zhang
a5780598b3 Remove thread_event_rollback() 2020-03-12 13:55:00 -07:00
Yinan Zhang
ba783b3a0f Remove prof -> thread_event dependency 2020-03-12 13:55:00 -07:00
Yinan Zhang
441d88d1c7 Rewrite profiling thread event 2020-03-12 13:55:00 -07:00
David Goldblatt
99b1291d17 Edata cache: add edata_cache_small_t. 
This can be used to amortize the synchronization costs of edata_cache accesses.
 2020-03-12 11:58:09 -07:00
David Goldblatt
92485032b2 Cache bin: improve comments. 2020-03-12 11:54:19 -07:00
David Goldblatt
d701a085c2 Fast path: allow low-water mark changes. 
This lets us put more allocations on an "almost as fast" path after a flush.
This results in around a 4% reduction in malloc cycles in prod workloads
(corresponding to about a 0.1% reduction in overall cycles).
 2020-03-12 11:54:19 -07:00
David Goldblatt
397da03865 Cache bin: rewrite to track more state. 
With this, we track all of the empty, full, and low water states together.  This
simplifies a lot of the tracking logic, since we now don't need the
cache_bin_info_t for state queries (except for some debugging).
 2020-03-12 11:54:19 -07:00
David Goldblatt
0a2fcfac01 Tcache: Hold cache bin allocation explicitly. 2020-03-12 11:54:19 -07:00
David Goldblatt
d498a4bb08 Cache bin: Add an emptiness assertion. 2020-03-12 11:54:19 -07:00
David Goldblatt
6a7aa46ef7 Cache bin: Add a debug method for init checking. 2020-03-12 11:54:19 -07:00
David Goldblatt
370c1ea007 Cache bin: Write the unit test in terms of the API 
I.e. stop allowing the unit test to have secret access to implementation
internals.
 2020-03-12 11:54:19 -07:00
David Goldblatt
7f5ebd211c Cache bin: set low-water internally. 2020-03-12 11:54:19 -07:00
David Goldblatt
60113dfe3b Cache bin: Move in initialization code. 2020-03-12 11:54:19 -07:00
David Goldblatt
44529da852 Cache-bin: Make flush modifications internal 
I.e. the tcache code just calls a cache-bin function to finish flush (and move
pointers around, etc.).  It doesn't directly access the cache-bin's owned memory
any more.
 2020-03-12 11:54:19 -07:00
David Goldblatt
ff6acc6ed5 Cache bin: simplify names and argument ordering. 
We always start with the cache bin, then its info (if necessary).
 2020-03-12 11:54:19 -07:00
David Goldblatt
e1dcc557d6 Cache bin: Only take the relevant cache_bin_info_t 
Previously, we took an array of cache_bin_info_ts and an index, and dereferenced
ourselves.  But infos for other cache_bins aren't relevant to any particular
cache bin, so that should be the caller's job.
 2020-03-12 11:54:19 -07:00
David Goldblatt
1b00d808d7 cache_bin: Don't let arena see empty position. 2020-03-12 11:54:19 -07:00
David Goldblatt
d303f30796 cache_bin nflush -> n. 
We're going to use it on the fill pathway as well.
 2020-03-12 11:54:19 -07:00
David Goldblatt
74d36d78ef Cache bin: Make ncached_max a query on the info_t. 2020-03-12 11:54:19 -07:00
David Goldblatt
b66c0973cc cache_bin: Don't allow direct internals access. 2020-03-12 11:54:19 -07:00
David Goldblatt
da68f73296 Move percpu_arena_update. 
It's not really part of the API of the arena; it changes which arena we're using
that API on.
 2020-03-12 11:54:19 -07:00
David Goldblatt
909c501b07 Cache_bin: Shouldn't know about tcache. 
Instead, have it take the cache_bin_info_ts to use by pointer.  While we're
here, add a src file for the cache bin.
 2020-03-12 11:54:19 -07:00
David Goldblatt
79f1ee2fc0 Move junking out of arena/tcache code. 
This is debug only and we keep it off the fast path.  Moving it here simplifies
the internal logic.

This never tries to junk on regions that were shrunk via xallocx.  I think this
is fine for two reasons:
- The shrunk-with-xallocx case is rare.
- We don't always do that anyway before this diff (it depends on the opt
  settings and extent hooks in effect).
 2020-03-12 11:54:19 -07:00
David T. Goldblatt
6c3491ad31 Tcache: Unify bin flush logic. 
The small and large pathways share most of their logic, even if some of the
individual operations are different.  We pull out the common logic into a
force-inlined function, and then specialize twice, once for each value of
"small".
 2020-02-25 10:21:03 -08:00
David T. Goldblatt
9f4fc27389 Ehooks: Fix a build warning. 
We wrote `return some_void_func()` in a function returning void, which is
confusing and triggers warnings on MSVC.
 2020-02-25 10:21:03 -08:00
David T. Goldblatt
162c2bcf31 Background thread: take base as a parameter. 2020-02-18 11:22:09 -08:00
David T. Goldblatt
29436fa056 Break prof and tcache knowledge of b0. 2020-02-18 11:22:09 -08:00
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 T. Goldblatt
182192f83c Base: Pull into a single header. 2020-02-18 11:22:09 -08:00
David T. Goldblatt
34b7165fde Put szind_t, pszind_t in sz.h. 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
Qi Wang
ba0e35411c Rework the bin locking around tcache refill / flush. 
Previously, tcache fill/flush (as well as small alloc/dalloc on the arena) may
potentially drop the bin lock for slab_alloc and slab_dalloc.  This commit
refactors the logic so that the slab calls happen in the same function / level
as the bin lock / unlock.  The main purpose is to be able to use flat combining
without having to keep track of stack state.

In the meantime, this change reduces the locking, especially for slab_dalloc
calls, where nothing happens after the call.
 2020-02-13 23:31:54 -08:00
Kamil Rytarowski
7fd22f7b2e Fix Undefined Behavior in hash.h 
hash.h:200:27, left shift of 250 by 24 places cannot be represented in type 'int'
 2020-02-13 12:25:26 -08:00
Yinan Zhang
9cac3fa8f5 Encapsulate buffer allocation in buffered writer 2020-02-04 13:21:58 -08:00
Yinan Zhang
bdc08b5158 Better naming buffered writer 2020-02-04 13:21:58 -08:00
Qi Wang
c6bfe55857 Update the tsd description. 2020-02-04 13:07:05 -08:00
Qi Wang
e896522616 Abbreviate thread-event to te. 2020-02-04 13:07:05 -08:00
Qi Wang
5e500523a0 Remove thread_event_boot(). 2020-02-04 00:18:15 -08:00
Qi Wang
97dd79db6c Implement deallocation events. 
Make the event module to accept two event types, and pass around the event
context.  Use bytes-based events to trigger tcache GC on deallocation, and get
rid of the tcache ticker.
 2020-02-04 00:18:15 -08:00
Qi Wang
974222c626 Add safety check on sdallocx slow / sampled path. 2020-01-31 00:04:22 -08:00
Qi Wang
88d9eca848 Enforce page alignment for sampled allocations. 
This allows sampled allocations to be checked through alignment, therefore
enable sized deallocation regardless of cache_oblivious.
 2020-01-31 00:04:22 -08:00
Qi Wang
0f552ed673 Don't purge huge extents when decay is off. 2020-01-30 14:40:38 -08:00
Qi Wang
38a48e5741 Set reentrancy to 1 for tsd_state_purgatory. 
Reentrancy is already set for other non-nominal tsd states (reincarnated and
minimal_initialized).  Add purgatory to be safe and consistent.
 2020-01-30 13:55:20 -08:00
Qi Wang
88b0e03a4e Implement opt.stats_interval and the _opts options. 
Add options stats_interval and stats_interval_opts to allow interval based stats
printing.  This provides an easy way to collect stats without code changes,
because opt.stats_print may not work (some binaries never exit).
 2020-01-29 09:57:55 -08:00
Qi Wang
d71a145ec1 Chagne prof_accum_t to counter_accum_t for general purpose. 2020-01-29 09:57:55 -08:00
Yinan Zhang
f81341a48b Fallback to unbuffered printing if OOM 2020-01-21 17:09:44 -08:00
David Goldblatt
bd3be8e0b1 Remove commit parameter to ecache functions. 
No caller ever wants uncommitted memory.
 2020-01-17 10:54:56 -08:00
Qi Wang
dab81bd315 Rework and fix the assertions on malloc fastpath. 
The first half of the malloc fastpath may execute before malloc_init.  Make the
assertions work in that case.
 2020-01-14 15:00:41 -08:00
Yinan Zhang
2b604a3016 Record request size in prof recent entries 2020-01-10 12:01:01 -08:00
Yinan Zhang
40a391408c Define constructor for buffered writer argument 2020-01-10 11:59:02 -08:00
Yinan Zhang
6d8e616902 Make buffered writer an independent module 2020-01-10 11:59:02 -08:00
Yinan Zhang
6b6b4709b3 Unify buffered writer naming 2020-01-09 14:31:31 -08:00
Yinan Zhang
9a60cf54ec Last-N profiling mode 2019-12-30 15:58:57 -08:00
Yinan Zhang
7a27a05940 Delete tdata states used for cleanup 2019-12-30 15:58:57 -08:00
Yinan Zhang
e98ddf7987 Fix unlikely condition in arena_prof_info_get() 2019-12-30 15:58:57 -08:00
Yinan Zhang
3fa142cf39 Remove _externs from prof internal header names 2019-12-23 11:14:15 -08:00
Yinan Zhang
112dc36dd5 Handle log_mtx during forking 2019-12-20 17:17:48 -08:00
Yinan Zhang
ea42174d07 Refactor profiling headers 2019-12-20 17:17:48 -08:00
David Goldblatt
6342da0970 Ehooks: Further optimize default merge case. 
This avoids the cost of an iealloc in cases where the user uses the default
merge hook without using the default extent hooks.
 2019-12-20 10:18:40 -08:00
David Goldblatt
e210ccc57e Move extent2 -> extent. 
Eventually, we may fully break off the extent module; but not for some time.  If
it's going to live on in a non-transitory state, it might as well have the nicer
name.
 2019-12-20 10:18:40 -08:00
David Goldblatt
2f4fa80414 Rename extents -> ecache. 2019-12-20 10:18:40 -08:00
David Goldblatt
56cc56b692 Break extent split dependence on arena. 2019-12-20 10:18:40 -08:00
David Goldblatt
0aa9769fb0 Break commit functions' arena dependence 2019-12-20 10:18:40 -08:00
David Goldblatt
576d7047ab Ecache: Should know its arena_ind. 
What we call an arena_ind is really the index associated with some particular
set of ehooks; the arena is just the user-visible portion of that.  Making this
explicit, and reframing checks in terms of that, makes the code simpler and
cleaner, and helps us avoid passing the arena itself all throughout extent code.

This lets us put back an arena-specific assert.
 2019-12-20 10:18:40 -08:00
David Goldblatt
372042a082 Remove merge dependence on the arena. 2019-12-20 10:18:40 -08:00
David Goldblatt
9cad5639ff Ehooks: remove arena_ind parameter. 
This lives within the ehooks_t now, so that callers don't need to know it.
 2019-12-20 10:18:40 -08:00
David Goldblatt
57fe99d4be Move relevant index into the ehooks_t itself. 
It's always passed into the ehooks; keeping it colocated lets us avoid passing
the arena everywhere.
 2019-12-20 10:18:40 -08:00
David Goldblatt
c792f3e4ab edata_cache: Remember the associated base_t. 
This will save us some trouble down the line when we stop passing arena pointers
everywhere; we won't have to pass around a base_t pointer either.
 2019-12-20 10:18:40 -08:00
David Goldblatt
ae23e5f426 Unify extent_alloc_wrapper with the other wrappers. 
Previously, it was really more like extents_alloc (it looks in an ecache for an
extent to reuse as its primary allocation pathway).  Make that pathway more
explciitly like extents_alloc, and rename extent_alloc_wrapper_hard accordingly.
 2019-12-20 10:18:40 -08:00
David Goldblatt
d8b0b66c6c Put extent_state_t into ecache as well as eset. 2019-12-20 10:18:40 -08:00
David Goldblatt
98eb40e563 Move delay_coalesce from the eset to the ecache. 2019-12-20 10:18:40 -08:00
David Goldblatt
bb70df8e5b Extent refactor: Introduce ecache module. 
This will eventually completely wrap the eset, and handle concurrency,
allocation, and deallocation.  For now, we only pull out the mutex from the
eset.
 2019-12-20 10:18:40 -08:00
David Goldblatt
0704516245 Ehooks: Add head tracking. 2019-12-20 10:18:40 -08:00
David Goldblatt
09475bf8ac extent_may_dalloc -> ehooks_dalloc_will_fail 2019-12-20 10:18:40 -08:00
David Goldblatt
7859184179 Pull out edata_t caching into its own module. 2019-12-20 10:18:40 -08:00
David Goldblatt
a7862df616 Rename extent_t to edata_t. 
This frees us up from the unfortunate extent/extent2 naming collision.
 2019-12-20 10:18:40 -08:00
David Goldblatt
865debda22 Rename extent.h -> edata.h. 
This name is slightly pithier; a full-on rename will come shortly.
 2019-12-20 10:18:40 -08:00
David Goldblatt
a738a66b5c Ehooks: Add some debug zero and addr checks. 
These help make sure that the ehooks return properly zeroed memory when required
to.
 2019-12-20 10:18:40 -08:00
David Goldblatt
4b2e5ee8b9 Ehooks: Add a "zero" ehook. 
This is the first API expansion.  It lets the hooks pick where and how to purge
within themselves.
 2019-12-20 10:18:40 -08:00
David Goldblatt
403f2d1664 Extents: Split out introspection functionality. 
This isn't really part of the core extent allocation facilities.  Especially as
this module grows, having it in its own place may come in handy.
 2019-12-20 10:18:40 -08:00
David Goldblatt
92a511d385 Make extent module hermetic. 
In the form of extent2.h.  The naming leaves something to be desired, but I'll
leave that for a later diff.
 2019-12-20 10:18:40 -08:00
David Goldblatt
39fdc690a0 Ehooks comments and cleanup. 2019-12-20 10:18:40 -08:00
David Goldblatt
c8dae890c8 Extent -> Ehooks: Move over default hooks. 2019-12-20 10:18:40 -08:00
David Goldblatt
2fe5108263 Extent -> Ehooks: Move merge hook. 2019-12-20 10:18:40 -08:00
David Goldblatt
1fff4d2ee3 Extent -> Ehooks: Move split hook. 2019-12-20 10:18:40 -08:00
David Goldblatt
a5b42a1a10 Extent -> Ehooks: Move purge_forced hook. 2019-12-20 10:18:40 -08:00
David Goldblatt
368baa42ef Extent -> Ehooks: Move purge_lazy hook. 2019-12-20 10:18:40 -08:00
David Goldblatt
d78fe241ac Extent -> Ehooks: Move commit and decommit hooks. 2019-12-20 10:18:40 -08:00
David Goldblatt
5459ec9dae Extent -> Ehooks: Move destroy hook. 2019-12-20 10:18:40 -08:00
David Goldblatt
bac8e2e5a6 Extent -> Ehooks: Move dalloc hook. 2019-12-20 10:18:40 -08:00
David Goldblatt
dc8b4e6e13 Extent -> Ehooks: Move alloc hook. 2019-12-20 10:18:40 -08:00
David Goldblatt
703fbc0ff5 Introduce unsafe reentrancy guards. 
We have to work to circumvent the safety checks in pre_reentrancy when going
down extent hook pathways.  Instead, let's explicitly have checked and unchecked
guards.
 2019-12-20 10:18:40 -08:00
David Goldblatt
ae0d8e8591 Move extent ehook calls into ehooks 2019-12-20 10:18:40 -08:00
David Goldblatt
ba8b9ecbcb Add ehooks module 2019-12-20 10:18:40 -08:00
David Goldblatt
837119a948 base_structs.h: Remove some mid-line tabs. 2019-12-20 10:18:40 -08:00
David Goldblatt
9f6eb09585 Extents: Eagerly initialize extent hooks. 
When deferred initialization was added, initializing required copying
sizeof(extent_hooks_t) bytes after a pointer chase. Today, it's just a single
pointer loaded from the base_t. In subsequent diffs, we'll get rid of even that.
 2019-12-20 10:18:40 -08:00
David Goldblatt
4278f84603 Move extent hook getters/setters to arena.c 
This is where they're logically scoped; they access arena data.
 2019-12-20 10:18:40 -08:00
Qi Wang
d5031ea824 Allow dallocx and sdallocx after tsd destruction. 
After a thread turns into purgatory / reincarnated state, still allow dallocx
and sdallocx to function normally.
 2019-12-19 11:17:03 -08:00
Yinan Zhang
4afd709d1f Restructure setters for profiling info 
Explicitly define three setters:

- `prof_tctx_reset()`: set `prof_tctx` to `1U`, if we don't know in
advance whether the allocation is large or not;
- `prof_tctx_reset_sampled()`: set `prof_tctx` to `1U`, if we already
know in advance that the allocation is large;
- `prof_info_set()`: set a real `prof_tctx`, and also set other
profiling info e.g. the allocation time.

Code structure wise, the prof level is kept as a thin wrapper, the
large level only provides low level setter APIs, and the arena level
carries out the main logic.
 2019-12-17 10:01:28 -08:00
Yinan Zhang
1d01e4c770 Initialization utilities for nstime 2019-12-16 16:08:56 -08:00
Qi Wang
dd649c9485 Optimize away the tsd_fast() check on fastpath. 
Fold the tsd_state check onto the event threshold check.  The fast threshold is
set to 0 when tsd switch to non-nominal.

The fast_threshold can be reset by remote threads, to refect the non nominal tsd
state change.
 2019-12-11 23:44:20 -08:00
Yinan Zhang
45836d7fd3 Pass nstime_t pointer for profiling 2019-12-11 11:38:16 -08:00
Yinan Zhang
7d2bac5a38 Refactor destroy code path for prof_tctx 2019-12-10 16:31:05 -08:00
Yinan Zhang
055478cca8 Threshold is no longer updated before prof_realloc() 2019-12-10 16:31:05 -08:00
Yinan Zhang
7e3671911f Get rid of old indentation style for prof 2019-12-06 09:47:51 -08:00
Yinan Zhang
dfdd46f6c1 Refactor prof_tctx_t creation 2019-12-06 09:47:51 -08:00
Yinan Zhang
aa1d71fb7a Rename prof_tctx to alloc_tctx in prof_info_t 2019-12-06 09:47:51 -08:00
Yinan Zhang
5e0b090992 No need to pass usize to prof_tctx_set() 2019-12-06 09:47:51 -08:00
David Goldblatt
1b1e76acfe Disable some spuriously-triggering warnings 2019-12-04 13:45:17 -08:00
Yinan Zhang
6945371778 Change tsdn to tsd for profiling code path 2019-11-22 16:31:56 -08:00
Yinan Zhang
b55419f9b9 Restructure profiling 
Develop new data structure and code logic for holding profiling
related information stored in the extent that may be needed after the
extent is released, which in particular is the case for the
reallocation code path (e.g. in `rallocx()` and `xallocx()`).  The
data structure is a generalization of `prof_tctx_t`: we previously
only copy out the `prof_tctx` before the extent is released, but we
may be in need of additional fields. Currently the only additional
field is the allocation time field, but there may be more fields in
the future.

The restructuring also resolved a bug: `prof_realloc()` mistakenly
passed the new `ptr` to `prof_free_sampled_object()`, but passing in
the `old_ptr` would crash because it's already been released.  Now
the essential profiling information is collectively copied out early
and safely passed to `prof_free_sampled_object()` after the extent is
released.
 2019-11-22 16:31:56 -08:00
Mark Santaniello
8b2c2a596d Support C++17 over-aligned allocation 
Summary:
Add support for C++17 over-aligned allocation:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0035r4.html

Supporting all 10 operators means we avoid thunking thru libstdc++-v3/libsupc++ and just call jemalloc directly.

It's also worth noting that there is now an aligned *and sized* operator delete:
```
void operator delete(void* ptr, std::size_t size, std::align_val_t al) noexcept;
```

If JeMalloc did not provide this, the default implementation would ignore the size parameter entirely:
https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/libsupc%2B%2B/del_opsa.cc#L30-L33

(I must also update ax_cxx_compile_stdcxx.m4 to a newer version with C++17 support.)

Test Plan:
Wrote a simple test that allocates and then deletes an over-aligned type:
```
struct alignas(32) Foo {};
Foo *f;

int main()
{
  f = new Foo;
  delete f;
}
```

Before this change, both new and delete go thru PLT, and we end up calling regular old free:
```
(gdb) disassemble
Dump of assembler code for function main():
...
   0x00000000004029b7 <+55>:    call   0x4022d0 <_ZnwmSt11align_val_t@plt>
...
   0x00000000004029d5 <+85>:    call   0x4022e0 <_ZdlPvmSt11align_val_t@plt>
...
(gdb) s
free (ptr=0x7ffff6408020) at /home/engshare/third-party2/jemalloc/master/src/jemalloc.git-trunk/src/jemalloc.c:2842
2842            if (!free_fastpath(ptr, 0, false)) {
```

After this change, we directly call new/delete and ultimately call sdallocx:
```
(gdb) disassemble
Dump of assembler code for function main():
...
   0x0000000000402b77 <+55>:    call   0x496ca0 <operator new(unsigned long, std::align_val_t)>
...
   0x0000000000402b95 <+85>:    call   0x496e60 <operator delete(void*, unsigned long, std::align_val_t)>
...
(gdb) s
116             je_sdallocx_noflags(ptr, size);
```
 2019-11-22 10:14:16 -08:00
Qi Wang
9a7ae3c97f Reduce footprint of bin_t. 
Avoid storing mutex_prof_data_t in bin_t.  Added bin_stats_data_t which is used
for reporting bin stats.
 2019-11-21 11:08:36 -08:00
Yinan Zhang
73510dfd15 Revert "Fix bug in prof_realloc" 
This reverts commit 3b5eecf102.
 2019-11-15 15:13:39 -08:00
Yinan Zhang
3b5eecf102 Fix bug in prof_realloc 
We should pass in `old_ptr` rather than the new `ptr` to
`prof_free_sampled_object()` when `old_ptr` points to a sampled
allocation.
 2019-11-15 13:28:33 -08:00
Leonardo Santagada
c462753cc8 Use __forceinline for JEMALLOC_ALWAYS_INLINE on msvc 2019-11-12 13:50:25 -08:00
Qi Wang
da50d8ce87 Refactor and optimize prof sampling initialization. 
Makes the prof sample prng use the tsd prng_state.  This allows us to properly
initialize the sample interval event, without having to create tdata.  As a
result, tdata will be created on demand (when a thread reaches the sample
interval bytes allocated), instead of on the first allocation.
 2019-11-11 10:35:37 -08:00
Qi Wang
bc774a3519 Rename tsd->offset_state to tsd->prng_state. 2019-11-11 10:35:37 -08:00
Qi Wang
19a51abf33 Avoid arena->offset_state when tsd not available for prng. 
Use stack locals and remove the offset_state in arena.
 2019-11-11 10:35:37 -08:00
Nick Desaulniers
d01b425e5d Add -Wimplicit-fallthrough checks if supported 
Clang since r369414 (clang-10) can now check -Wimplicit-fallthrough for
C code, and use the GNU C style attribute to denote fallthrough.

Move the test from header only to autoconf. The previous test used
brittle version detection which did not work for newer clang that
supported this feature.

The attribute has to be its own statement, hence the added `;`. It also
can only precede case statements, so the final cases should be
explicitly terminated with break statements.

Fixes commit 3d29d11ac2 ("Clean compilation -Wextra")
Link: 1e0affb6e5
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
 2019-11-08 13:03:03 -08:00
Yinan Zhang
43f0ce92d8 Define general purpose tsd_thread_event_init() 2019-11-04 16:07:56 -08:00
Yinan Zhang
97f93fa0f2 Pull tcache GC events into thread event handler 2019-11-04 16:07:56 -08:00
Yinan Zhang
198f02e797 Pull prof_accumbytes into thread event handler 2019-11-04 15:21:16 -08:00
Yinan Zhang
152c0ef954 Build a general purpose thread event handler 2019-11-04 11:15:50 -08:00
David T. Goldblatt
de81a4eada Add stats counters for number of zero reallocs 2019-10-29 17:48:44 -07:00
David T. Goldblatt
9cfa805947 Realloc: Make behavior of realloc(ptr, 0) configurable. 2019-10-29 17:48:44 -07:00
Yinan Zhang
05681e387a Optimize cache_bin_alloc_easy for malloc fast path 
`tcache_bin_info` is not accessed on malloc fast path but the
compiler reserves a register for it, as well as an additional
register for `tcache_bin_info[ind].stack_size`.  The optimization
gets rid of the need for the two registers.
 2019-10-21 16:43:45 -07:00
Yinan Zhang
4fe50bc7d0 Fix amd64 MSVC warning 2019-10-18 10:16:29 -07:00
Yinan Zhang
4fbbc817c1 Simplify time setting and getting for prof log 2019-10-16 09:24:52 -07:00
Yinan Zhang
66e07f986d Suppress tdata creation in reentrancy 
This change suppresses tdata initialization and prof sample threshold
update in interrupting malloc calls.  Interrupting calls have no need
for tdata.  Delaying tdata creation aligns better with our lazy tdata
creation principle, and it also helps us gain control back from
interrupting calls more quickly and reduces any risk of delegating
tdata creation to an interrupting call.
 2019-10-04 08:52:50 -07:00
Yinan Zhang
beb7c16e94 Guard prof_active reset by opt_prof 
Set `prof_active` to read-only when `opt_prof` is turned off.
 2019-10-02 11:42:53 -07:00
David T. Goldblatt
3d84bd57f4 Arena: Add helper function arena_get_from_extent. 2019-09-23 23:06:27 -07:00